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b827b231 | 1 | /* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Nicira, Inc. |
9583bc14 EJ |
2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. */ | |
14 | ||
15 | #include <config.h> | |
16 | ||
17 | #include "ofproto/ofproto-dpif-xlate.h" | |
18 | ||
8449c4d6 | 19 | #include <errno.h> |
a36de779 PS |
20 | #include <arpa/inet.h> |
21 | #include <net/if.h> | |
22 | #include <sys/socket.h> | |
23 | #include <netinet/in.h> | |
8449c4d6 | 24 | |
db7d4e46 | 25 | #include "bfd.h" |
9583bc14 EJ |
26 | #include "bitmap.h" |
27 | #include "bond.h" | |
28 | #include "bundle.h" | |
29 | #include "byte-order.h" | |
db7d4e46 | 30 | #include "cfm.h" |
9583bc14 EJ |
31 | #include "connmgr.h" |
32 | #include "coverage.h" | |
46445c63 | 33 | #include "csum.h" |
e14deea0 | 34 | #include "dp-packet.h" |
9583bc14 | 35 | #include "dpif.h" |
f7f1ea29 | 36 | #include "in-band.h" |
db7d4e46 | 37 | #include "lacp.h" |
9583bc14 EJ |
38 | #include "learn.h" |
39 | #include "mac-learning.h" | |
6d95c4e8 | 40 | #include "mcast-snooping.h" |
9583bc14 EJ |
41 | #include "multipath.h" |
42 | #include "netdev-vport.h" | |
43 | #include "netlink.h" | |
44 | #include "nx-match.h" | |
45 | #include "odp-execute.h" | |
9583bc14 | 46 | #include "ofproto/ofproto-dpif-ipfix.h" |
ec7ceaed | 47 | #include "ofproto/ofproto-dpif-mirror.h" |
60d02c72 | 48 | #include "ofproto/ofproto-dpif-monitor.h" |
9583bc14 | 49 | #include "ofproto/ofproto-dpif-sflow.h" |
2d9b49dd | 50 | #include "ofproto/ofproto-dpif-trace.h" |
901a517e | 51 | #include "ofproto/ofproto-dpif-xlate-cache.h" |
9583bc14 | 52 | #include "ofproto/ofproto-dpif.h" |
6f00e29b | 53 | #include "ofproto/ofproto-provider.h" |
b598f214 BW |
54 | #include "openvswitch/dynamic-string.h" |
55 | #include "openvswitch/meta-flow.h" | |
56 | #include "openvswitch/list.h" | |
57 | #include "openvswitch/ofp-actions.h" | |
1fc11c59 | 58 | #include "openvswitch/ofp-ed-props.h" |
b598f214 BW |
59 | #include "openvswitch/vlog.h" |
60 | #include "ovs-lldp.h" | |
a36de779 | 61 | #include "ovs-router.h" |
b598f214 BW |
62 | #include "packets.h" |
63 | #include "tnl-neigh-cache.h" | |
a36de779 | 64 | #include "tnl-ports.h" |
9583bc14 | 65 | #include "tunnel.h" |
ee89ea7b | 66 | #include "util.h" |
9583bc14 | 67 | |
46c88433 | 68 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 69 | COVERAGE_DEFINE(xlate_actions_oversize); |
7d031d7e | 70 | COVERAGE_DEFINE(xlate_actions_too_many_output); |
9583bc14 EJ |
71 | |
72 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
73 | ||
8a553e9a | 74 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
790c5d26 BP |
75 | * flow translation. |
76 | * | |
77 | * The goal of limiting the depth of resubmits is to ensure that flow | |
78 | * translation eventually terminates. Only resubmits to the same table or an | |
79 | * earlier table count against the maximum depth. This is because resubmits to | |
80 | * strictly monotonically increasing table IDs will eventually terminate, since | |
81 | * any OpenFlow switch has a finite number of tables. OpenFlow tables are most | |
82 | * commonly traversed in numerically increasing order, so this limit has little | |
83 | * effect on conventionally designed OpenFlow pipelines. | |
84 | * | |
85 | * Outputs to patch ports and to groups also count against the depth limit. */ | |
86 | #define MAX_DEPTH 64 | |
8a553e9a | 87 | |
98b07853 BP |
88 | /* Maximum number of resubmit actions in a flow translation, whether they are |
89 | * recursive or not. */ | |
790c5d26 | 90 | #define MAX_RESUBMITS (MAX_DEPTH * MAX_DEPTH) |
98b07853 | 91 | |
46c88433 EJ |
92 | struct xbridge { |
93 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
94 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
95 | ||
ca6ba700 | 96 | struct ovs_list xbundles; /* Owned xbundles. */ |
46c88433 EJ |
97 | struct hmap xports; /* Indexed by ofp_port. */ |
98 | ||
99 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 100 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 101 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 102 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
103 | struct mbridge *mbridge; /* Mirroring. */ |
104 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
105 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 106 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 107 | struct stp *stp; /* STP or null if disabled. */ |
9efd308e | 108 | struct rstp *rstp; /* RSTP or null if disabled. */ |
46c88433 | 109 | |
46c88433 EJ |
110 | bool has_in_band; /* Bridge has in band control? */ |
111 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 112 | |
b440dd8c JS |
113 | /* Datapath feature support. */ |
114 | struct dpif_backer_support support; | |
46c88433 EJ |
115 | }; |
116 | ||
117 | struct xbundle { | |
118 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
119 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
120 | ||
ca6ba700 | 121 | struct ovs_list list_node; /* In parent 'xbridges' list. */ |
46c88433 EJ |
122 | struct xbridge *xbridge; /* Parent xbridge. */ |
123 | ||
ca6ba700 | 124 | struct ovs_list xports; /* Contains "struct xport"s. */ |
46c88433 EJ |
125 | |
126 | char *name; /* Name used in log messages. */ | |
127 | struct bond *bond; /* Nonnull iff more than one port. */ | |
128 | struct lacp *lacp; /* LACP handle or null. */ | |
129 | ||
130 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
fed8962a EG |
131 | uint16_t qinq_ethtype; /* Ethertype of dot1q-tunnel interface |
132 | * either 0x8100 or 0x88a8. */ | |
46c88433 EJ |
133 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ |
134 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
135 | * NULL if all VLANs are trunked. */ | |
fed8962a EG |
136 | unsigned long *cvlans; /* Bitmap of allowed customer vlans, |
137 | * NULL if all VLANs are allowed */ | |
46c88433 EJ |
138 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ |
139 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
c005f976 | 140 | bool protected; /* Protected port mode */ |
46c88433 EJ |
141 | }; |
142 | ||
143 | struct xport { | |
144 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
145 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
146 | ||
147 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
148 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
149 | ||
150 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
151 | ||
ca6ba700 | 152 | struct ovs_list bundle_node; /* In parent xbundle (if it exists). */ |
46c88433 EJ |
153 | struct xbundle *xbundle; /* Parent xbundle or null. */ |
154 | ||
155 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
156 | ||
157 | struct xbridge *xbridge; /* Parent bridge. */ | |
158 | struct xport *peer; /* Patch port peer or null. */ | |
159 | ||
160 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 161 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 162 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 163 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 164 | |
55954f6e EJ |
165 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
166 | ||
46c88433 EJ |
167 | bool may_enable; /* May be enabled in bonds. */ |
168 | bool is_tunnel; /* Is a tunnel port. */ | |
875ab130 | 169 | enum netdev_pt_mode pt_mode; /* packet_type handling. */ |
46c88433 EJ |
170 | |
171 | struct cfm *cfm; /* CFM handle or null. */ | |
172 | struct bfd *bfd; /* BFD handle or null. */ | |
0477baa9 | 173 | struct lldp *lldp; /* LLDP handle or null. */ |
46c88433 EJ |
174 | }; |
175 | ||
4d0acc70 EJ |
176 | struct xlate_ctx { |
177 | struct xlate_in *xin; | |
178 | struct xlate_out *xout; | |
179 | ||
46c88433 | 180 | const struct xbridge *xbridge; |
4d0acc70 EJ |
181 | |
182 | /* Flow at the last commit. */ | |
183 | struct flow base_flow; | |
184 | ||
185 | /* Tunnel IP destination address as received. This is stored separately | |
186 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
187 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
188 | * which might lead to an infinite loop. This could happen easily | |
189 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
190 | * actually set the tun_dst field. */ | |
e4d3706c | 191 | struct in6_addr orig_tunnel_ipv6_dst; |
4d0acc70 | 192 | |
84cf3c1f JR |
193 | /* Stack for the push and pop actions. See comment above nx_stack_push() |
194 | * in nx-match.c for info on how the stack is stored. */ | |
4d0acc70 EJ |
195 | struct ofpbuf stack; |
196 | ||
197 | /* The rule that we are currently translating, or NULL. */ | |
198 | struct rule_dpif *rule; | |
199 | ||
49a73e0c BP |
200 | /* Flow translation populates this with wildcards relevant in translation. |
201 | * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is | |
c0e638aa | 202 | * null, this is a pointer to a temporary buffer. */ |
49a73e0c BP |
203 | struct flow_wildcards *wc; |
204 | ||
1520ef4f BP |
205 | /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull, |
206 | * this is the same pointer. When 'xin->odp_actions' is null, this points | |
207 | * to a scratch ofpbuf. This allows code to add actions to | |
208 | * 'ctx->odp_actions' without worrying about whether the caller really | |
209 | * wants actions. */ | |
210 | struct ofpbuf *odp_actions; | |
211 | ||
790c5d26 BP |
212 | /* Statistics maintained by xlate_table_action(). |
213 | * | |
2d9b49dd | 214 | * These statistics limit the amount of work that a single flow |
790c5d26 BP |
215 | * translation can perform. The goal of the first of these, 'depth', is |
216 | * primarily to prevent translation from performing an infinite amount of | |
217 | * work. It counts the current depth of nested "resubmit"s (and a few | |
218 | * other activities); when a resubmit returns, it decreases. Resubmits to | |
219 | * tables in strictly monotonically increasing order don't contribute to | |
220 | * 'depth' because they cannot cause a flow translation to take an infinite | |
221 | * amount of time (because the number of tables is finite). Translation | |
222 | * aborts when 'depth' exceeds MAX_DEPTH. | |
223 | * | |
224 | * 'resubmits', on the other hand, prevents flow translation from | |
225 | * performing an extraordinarily large while still finite amount of work. | |
226 | * It counts the total number of resubmits (and a few other activities) | |
227 | * that have been executed. Returning from a resubmit does not affect this | |
228 | * counter. Thus, this limits the amount of work that a particular | |
229 | * translation can perform. Translation aborts when 'resubmits' exceeds | |
230 | * MAX_RESUBMITS (which is much larger than MAX_DEPTH). | |
231 | */ | |
790c5d26 | 232 | int depth; /* Current resubmit nesting depth. */ |
98b07853 | 233 | int resubmits; /* Total number of resubmits. */ |
5a070238 | 234 | bool in_group; /* Currently translating ofgroup, if true. */ |
029ca940 | 235 | bool in_action_set; /* Currently translating action_set, if true. */ |
331c07ac YHW |
236 | bool in_packet_out; /* Currently translating a packet_out msg, if |
237 | * true. */ | |
1fc11c59 JS |
238 | bool pending_encap; /* True when waiting to commit a pending |
239 | * encap action. */ | |
240 | struct ofpbuf *encap_data; /* May contain a pointer to an ofpbuf with | |
241 | * context for the datapath encap action.*/ | |
98b07853 | 242 | |
4d0acc70 | 243 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
8b1e5560 JR |
244 | ovs_be64 rule_cookie; /* Cookie of the rule being translated. */ |
245 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ | |
4d0acc70 | 246 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
4e022ec0 | 247 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
2031ef97 | 248 | ofp_port_t nf_output_iface; /* Output interface index for NetFlow. */ |
4d0acc70 | 249 | bool exit; /* No further actions should be processed. */ |
3d6151f3 | 250 | mirror_mask_t mirrors; /* Bitmap of associated mirrors. */ |
1356dbd1 | 251 | int mirror_snaplen; /* Max size of a mirror packet in byte. */ |
7fdb60a7 | 252 | |
1d361a81 BP |
253 | /* Freezing Translation |
254 | * ==================== | |
e672ff9b | 255 | * |
1d361a81 BP |
256 | * At some point during translation, the code may recognize the need to halt |
257 | * and checkpoint the translation in a way that it can be restarted again | |
258 | * later. We call the checkpointing process "freezing" and the restarting | |
259 | * process "thawing". | |
e672ff9b | 260 | * |
1d361a81 | 261 | * The use cases for freezing are: |
e672ff9b | 262 | * |
1d361a81 BP |
263 | * - "Recirculation", where the translation process discovers that it |
264 | * doesn't have enough information to complete translation without | |
265 | * actually executing the actions that have already been translated, | |
266 | * which provides the additionally needed information. In these | |
267 | * situations, translation freezes translation and assigns the frozen | |
268 | * data a unique "recirculation ID", which it associates with the data | |
269 | * in a table in userspace (see ofproto-dpif-rid.h). It also adds a | |
270 | * OVS_ACTION_ATTR_RECIRC action specifying that ID to the datapath | |
271 | * actions. When a packet hits that action, the datapath looks its | |
272 | * flow up again using the ID. If there's a miss, it comes back to | |
273 | * userspace, which find the recirculation table entry for the ID, | |
274 | * thaws the associated frozen data, and continues translation from | |
275 | * that point given the additional information that is now known. | |
e672ff9b | 276 | * |
1d361a81 BP |
277 | * The archetypal example is MPLS. As MPLS is implemented in |
278 | * OpenFlow, the protocol that follows the last MPLS label becomes | |
279 | * known only when that label is popped by an OpenFlow action. That | |
280 | * means that Open vSwitch can't extract the headers beyond the MPLS | |
281 | * labels until the pop action is executed. Thus, at that point | |
282 | * translation uses the recirculation process to extract the headers | |
283 | * beyond the MPLS labels. | |
e672ff9b | 284 | * |
1d361a81 BP |
285 | * (OVS also uses OVS_ACTION_ATTR_RECIRC to implement hashing for |
286 | * output to bonds. OVS pre-populates all the datapath flows for bond | |
287 | * output in the datapath, though, which means that the elaborate | |
288 | * process of coming back to userspace for a second round of | |
289 | * translation isn't needed, and so bonds don't follow the above | |
290 | * process.) | |
e672ff9b | 291 | * |
77ab5fd2 BP |
292 | * - "Continuation". A continuation is a way for an OpenFlow controller |
293 | * to interpose on a packet's traversal of the OpenFlow tables. When | |
294 | * the translation process encounters a "controller" action with the | |
295 | * "pause" flag, it freezes translation, serializes the frozen data, | |
296 | * and sends it to an OpenFlow controller. The controller then | |
297 | * examines and possibly modifies the frozen data and eventually sends | |
298 | * it back to the switch, which thaws it and continues translation. | |
e672ff9b | 299 | * |
1d361a81 BP |
300 | * The main problem of freezing translation is preserving state, so that |
301 | * when the translation is thawed later it resumes from where it left off, | |
302 | * without disruption. In particular, actions must be preserved as follows: | |
303 | * | |
304 | * - If we're freezing because an action needed more information, the | |
305 | * action that prompted it. | |
306 | * | |
307 | * - Any actions remaining to be translated within the current flow. | |
308 | * | |
309 | * - If translation was frozen within a NXAST_RESUBMIT, then any actions | |
310 | * following the resubmit action. Resubmit actions can be nested, so | |
311 | * this has to go all the way up the control stack. | |
e672ff9b JR |
312 | * |
313 | * - The OpenFlow 1.1+ action set. | |
314 | * | |
315 | * State that actions and flow table lookups can depend on, such as the | |
316 | * following, must also be preserved: | |
317 | * | |
318 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
319 | * | |
1d361a81 | 320 | * - The stack used by NXAST_STACK_PUSH and NXAST_STACK_POP actions. |
e672ff9b JR |
321 | * |
322 | * - The table ID and cookie of the flow being translated at each level | |
1d361a81 BP |
323 | * of the control stack, because these can become visible through |
324 | * OFPAT_CONTROLLER actions (and other ways). | |
e672ff9b JR |
325 | * |
326 | * Translation allows for the control of this state preservation via these | |
1d361a81 BP |
327 | * members. When a need to freeze translation is identified, the |
328 | * translation process: | |
e672ff9b | 329 | * |
1d361a81 | 330 | * 1. Sets 'freezing' to true. |
e672ff9b JR |
331 | * |
332 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
333 | * translation process. | |
334 | * | |
1d361a81 BP |
335 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'frozen_actions', and points |
336 | * frozen_actions.header to the action to make it easy to find it later. | |
337 | * This action holds the current table ID and cookie so that they can be | |
338 | * restored during a post-recirculation upcall translation. | |
e672ff9b JR |
339 | * |
340 | * 4. Adds the action that prompted recirculation and any actions following | |
1d361a81 | 341 | * it within the same flow to 'frozen_actions', so that they can be |
8a5fb3b4 | 342 | * executed during a post-recirculation upcall translation. |
e672ff9b JR |
343 | * |
344 | * 5. Returns. | |
345 | * | |
346 | * 6. The action that prompted recirculation might be nested in a stack of | |
347 | * nested "resubmit"s that have actions remaining. Each of these notices | |
1d361a81 BP |
348 | * that we're exiting and freezing and responds by adding more |
349 | * OFPACT_UNROLL_XLATE actions to 'frozen_actions', as necessary, | |
350 | * followed by any actions that were yet unprocessed. | |
e672ff9b | 351 | * |
1d361a81 BP |
352 | * If we're freezing because of recirculation, the caller generates a |
353 | * recirculation ID and associates all the state produced by this process | |
354 | * with it. For post-recirculation upcall translation, the caller passes it | |
355 | * back in for the new translation to execute. The process yielded a set of | |
356 | * ofpacts that can be translated directly, so it is not much of a special | |
357 | * case at that point. | |
e672ff9b | 358 | */ |
1d361a81 | 359 | bool freezing; |
53cc166a JR |
360 | bool recirc_update_dp_hash; /* Generated recirculation will be preceded |
361 | * by datapath HASH action to get an updated | |
362 | * dp_hash after recirculation. */ | |
363 | uint32_t dp_hash_alg; | |
364 | uint32_t dp_hash_basis; | |
1d361a81 | 365 | struct ofpbuf frozen_actions; |
77ab5fd2 | 366 | const struct ofpact_controller *pause; |
0d3239e8 | 367 | struct flow *paused_flow; |
e672ff9b | 368 | |
e12ec36b SH |
369 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
370 | * This is a trigger for recirculation in cases where translating an action | |
371 | * or looking up a flow requires access to the fields of the packet after | |
372 | * the MPLS label stack that was originally present. */ | |
373 | bool was_mpls; | |
374 | ||
07659514 JS |
375 | /* True if conntrack has been performed on this packet during processing |
376 | * on the current bridge. This is used to determine whether conntrack | |
1d361a81 | 377 | * state from the datapath should be honored after thawing. */ |
07659514 JS |
378 | bool conntracked; |
379 | ||
9ac0aada JR |
380 | /* Pointer to an embedded NAT action in a conntrack action, or NULL. */ |
381 | struct ofpact_nat *ct_nat_action; | |
382 | ||
7fdb60a7 SH |
383 | /* OpenFlow 1.1+ action set. |
384 | * | |
385 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
386 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
387 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 388 | * datapath actions. */ |
c61f3870 | 389 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 | 390 | struct ofpbuf action_set; /* Action set. */ |
fff1b9c0 JR |
391 | |
392 | enum xlate_error error; /* Translation failed. */ | |
4d0acc70 EJ |
393 | }; |
394 | ||
f0fb825a EG |
395 | /* Structure to track VLAN manipulation */ |
396 | struct xvlan_single { | |
397 | uint16_t tpid; | |
398 | uint16_t vid; | |
399 | uint16_t pcp; | |
400 | }; | |
401 | ||
402 | struct xvlan { | |
403 | struct xvlan_single v[FLOW_MAX_VLAN_HEADERS]; | |
404 | }; | |
405 | ||
fff1b9c0 JR |
406 | const char *xlate_strerror(enum xlate_error error) |
407 | { | |
408 | switch (error) { | |
409 | case XLATE_OK: | |
410 | return "OK"; | |
411 | case XLATE_BRIDGE_NOT_FOUND: | |
412 | return "Bridge not found"; | |
413 | case XLATE_RECURSION_TOO_DEEP: | |
414 | return "Recursion too deep"; | |
415 | case XLATE_TOO_MANY_RESUBMITS: | |
416 | return "Too many resubmits"; | |
417 | case XLATE_STACK_TOO_DEEP: | |
418 | return "Stack too deep"; | |
419 | case XLATE_NO_RECIRCULATION_CONTEXT: | |
420 | return "No recirculation context"; | |
421 | case XLATE_RECIRCULATION_CONFLICT: | |
422 | return "Recirculation conflict"; | |
423 | case XLATE_TOO_MANY_MPLS_LABELS: | |
424 | return "Too many MPLS labels"; | |
8d8ab6c2 JG |
425 | case XLATE_INVALID_TUNNEL_METADATA: |
426 | return "Invalid tunnel metadata"; | |
fff1b9c0 JR |
427 | } |
428 | return "Unknown error"; | |
429 | } | |
430 | ||
ed9c9e3e | 431 | static void xlate_action_set(struct xlate_ctx *ctx); |
704bb0bf | 432 | static void xlate_commit_actions(struct xlate_ctx *ctx); |
ed9c9e3e | 433 | |
8bdb2bdb SC |
434 | static void |
435 | apply_nested_clone_actions(struct xlate_ctx *ctx, const struct xport *in_dev, | |
436 | struct xport *out_dev); | |
437 | ||
1d741d6d | 438 | static void |
1d361a81 | 439 | ctx_trigger_freeze(struct xlate_ctx *ctx) |
1d741d6d JR |
440 | { |
441 | ctx->exit = true; | |
1d361a81 | 442 | ctx->freezing = true; |
1d741d6d JR |
443 | } |
444 | ||
53cc166a JR |
445 | static void |
446 | ctx_trigger_recirculate_with_hash(struct xlate_ctx *ctx, uint32_t type, | |
447 | uint32_t basis) | |
448 | { | |
449 | ctx->exit = true; | |
450 | ctx->freezing = true; | |
451 | ctx->recirc_update_dp_hash = true; | |
452 | ctx->dp_hash_alg = type; | |
453 | ctx->dp_hash_basis = basis; | |
454 | } | |
455 | ||
1d741d6d | 456 | static bool |
1d361a81 | 457 | ctx_first_frozen_action(const struct xlate_ctx *ctx) |
1d741d6d | 458 | { |
1d361a81 | 459 | return !ctx->frozen_actions.size; |
e672ff9b JR |
460 | } |
461 | ||
3293cb85 | 462 | static void |
1d361a81 | 463 | ctx_cancel_freeze(struct xlate_ctx *ctx) |
3293cb85 | 464 | { |
1d361a81 BP |
465 | if (ctx->freezing) { |
466 | ctx->freezing = false; | |
53cc166a | 467 | ctx->recirc_update_dp_hash = false; |
1d361a81 BP |
468 | ofpbuf_clear(&ctx->frozen_actions); |
469 | ctx->frozen_actions.header = NULL; | |
3293cb85 BP |
470 | } |
471 | } | |
472 | ||
77ab5fd2 | 473 | static void finish_freezing(struct xlate_ctx *ctx); |
e672ff9b | 474 | |
9583bc14 EJ |
475 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
476 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
477 | * when an input bundle is needed for validation (e.g., mirroring or | |
478 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
479 | * any 'port' structs, so care must be taken when dealing with it. */ |
480 | static struct xbundle ofpp_none_bundle = { | |
481 | .name = "OFPP_NONE", | |
482 | .vlan_mode = PORT_VLAN_TRUNK | |
483 | }; | |
9583bc14 | 484 | |
55954f6e EJ |
485 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
486 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
487 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
488 | struct skb_priority_to_dscp { | |
489 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
490 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
491 | ||
492 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
493 | }; | |
494 | ||
84f0f298 RW |
495 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
496 | * Xcfgp contains the pointer to the current xlate configuration. | |
497 | * When the main thread needs to change the configuration, it copies xcfgp to | |
498 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
499 | * does not block handler and revalidator threads. */ | |
500 | struct xlate_cfg { | |
501 | struct hmap xbridges; | |
502 | struct hmap xbundles; | |
503 | struct hmap xports; | |
504 | }; | |
b1b72f2d | 505 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 506 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
507 | |
508 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
509 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
510 | struct xlate_ctx *); | |
adcf00ba | 511 | static void xlate_normal(struct xlate_ctx *); |
6d328fa2 SH |
512 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
513 | uint8_t table_id, bool may_packet_in, | |
2cd20955 | 514 | bool honor_table_miss, bool with_ct_orig); |
2d9b49dd BP |
515 | static bool input_vid_is_valid(const struct xlate_ctx *, |
516 | uint16_t vid, struct xbundle *); | |
f0fb825a EG |
517 | static void xvlan_copy(struct xvlan *dst, const struct xvlan *src); |
518 | static void xvlan_pop(struct xvlan *src); | |
fed8962a | 519 | static void xvlan_push_uninit(struct xvlan *src); |
f0fb825a EG |
520 | static void xvlan_extract(const struct flow *, struct xvlan *); |
521 | static void xvlan_put(struct flow *, const struct xvlan *); | |
522 | static void xvlan_input_translate(const struct xbundle *, | |
523 | const struct xvlan *in, | |
524 | struct xvlan *xvlan); | |
525 | static void xvlan_output_translate(const struct xbundle *, | |
526 | const struct xvlan *xvlan, | |
527 | struct xvlan *out); | |
46c88433 | 528 | static void output_normal(struct xlate_ctx *, const struct xbundle *, |
f0fb825a | 529 | const struct xvlan *); |
e93ef1c7 JR |
530 | |
531 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
532 | struct xlate_bond_recirc { | |
533 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
534 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
535 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
536 | }; | |
537 | ||
538 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
539 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 540 | |
84f0f298 RW |
541 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
542 | const struct ofproto_dpif *); | |
290835f9 BP |
543 | static struct xbridge *xbridge_lookup_by_uuid(struct xlate_cfg *, |
544 | const struct uuid *); | |
84f0f298 RW |
545 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, |
546 | const struct ofbundle *); | |
547 | static struct xport *xport_lookup(struct xlate_cfg *, | |
548 | const struct ofport_dpif *); | |
46c88433 | 549 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
550 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
551 | uint32_t skb_priority); | |
552 | static void clear_skb_priorities(struct xport *); | |
16194afd | 553 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
554 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
555 | uint8_t *dscp); | |
46c88433 | 556 | |
84f0f298 RW |
557 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
558 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
559 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 560 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
561 | const struct mac_learning *, struct stp *, |
562 | struct rstp *, const struct mcast_snooping *, | |
563 | const struct mbridge *, | |
564 | const struct dpif_sflow *, | |
565 | const struct dpif_ipfix *, | |
2f47cdf4 | 566 | const struct netflow *, |
84f0f298 | 567 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 568 | const struct dpif_backer_support *); |
84f0f298 | 569 | static void xlate_xbundle_set(struct xbundle *xbundle, |
f0fb825a | 570 | enum port_vlan_mode vlan_mode, |
fed8962a EG |
571 | uint16_t qinq_ethtype, int vlan, |
572 | unsigned long *trunks, unsigned long *cvlans, | |
f0fb825a | 573 | bool use_priority_tags, |
84f0f298 | 574 | const struct bond *bond, const struct lacp *lacp, |
c005f976 | 575 | bool floodable, bool protected); |
84f0f298 RW |
576 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, |
577 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
578 | const struct bfd *bfd, const struct lldp *lldp, |
579 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
580 | enum ofputil_port_config config, |
581 | enum ofputil_port_state state, bool is_tunnel, | |
582 | bool may_enable); | |
583 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
584 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
585 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
586 | static void xlate_xbridge_copy(struct xbridge *); | |
587 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
588 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
589 | struct xport *); | |
590 | static void xlate_xcfg_free(struct xlate_cfg *); | |
2d9b49dd BP |
591 | \f |
592 | /* Tracing helpers. */ | |
593 | ||
594 | /* If tracing is enabled in 'ctx', creates a new trace node and appends it to | |
595 | * the list of nodes maintained in ctx->xin. The new node has type 'type' and | |
596 | * its text is created from 'format' by treating it as a printf format string. | |
597 | * Returns the list of nodes embedded within the new trace node; ordinarily, | |
598 | * the calleer can ignore this, but it is useful if the caller needs to nest | |
599 | * more trace nodes within the new node. | |
600 | * | |
601 | * If tracing is not enabled, does nothing and returns NULL. */ | |
602 | static struct ovs_list * OVS_PRINTF_FORMAT(3, 4) | |
603 | xlate_report(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
604 | const char *format, ...) | |
34dd0d78 | 605 | { |
2d9b49dd BP |
606 | struct ovs_list *subtrace = NULL; |
607 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
c1b3756c | 608 | va_list args; |
c1b3756c | 609 | va_start(args, format); |
2d9b49dd BP |
610 | char *text = xvasprintf(format, args); |
611 | subtrace = &oftrace_report(ctx->xin->trace, type, text)->subs; | |
c1b3756c | 612 | va_end(args); |
2d9b49dd | 613 | free(text); |
34dd0d78 | 614 | } |
2d9b49dd | 615 | return subtrace; |
34dd0d78 | 616 | } |
84f0f298 | 617 | |
2d9b49dd BP |
618 | /* This is like xlate_report() for errors that are serious enough that we |
619 | * should log them even if we are not tracing. */ | |
620 | static void OVS_PRINTF_FORMAT(2, 3) | |
621 | xlate_report_error(const struct xlate_ctx *ctx, const char *format, ...) | |
622 | { | |
623 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
624 | if (!OVS_UNLIKELY(ctx->xin->trace) | |
625 | && (!ctx->xin->packet || VLOG_DROP_WARN(&rl))) { | |
626 | return; | |
627 | } | |
628 | ||
629 | struct ds s = DS_EMPTY_INITIALIZER; | |
630 | va_list args; | |
631 | va_start(args, format); | |
632 | ds_put_format_valist(&s, format, args); | |
633 | va_end(args); | |
634 | ||
635 | if (ctx->xin->trace) { | |
636 | oftrace_report(ctx->xin->trace, OFT_ERROR, ds_cstr(&s)); | |
637 | } else { | |
638 | ds_put_cstr(&s, " while processing "); | |
50f96b10 | 639 | flow_format(&s, &ctx->base_flow, NULL); |
2d9b49dd BP |
640 | ds_put_format(&s, " on bridge %s", ctx->xbridge->name); |
641 | VLOG_WARN("%s", ds_cstr(&s)); | |
642 | } | |
643 | ds_destroy(&s); | |
644 | } | |
645 | ||
646 | /* This is like xlate_report() for messages that should be logged at debug | |
647 | * level (even if we are not tracing) because they can be valuable for | |
648 | * debugging. */ | |
649 | static void OVS_PRINTF_FORMAT(3, 4) | |
650 | xlate_report_debug(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
651 | const char *format, ...) | |
652 | { | |
653 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
654 | if (!OVS_UNLIKELY(ctx->xin->trace) | |
655 | && (!ctx->xin->packet || VLOG_DROP_DBG(&rl))) { | |
656 | return; | |
657 | } | |
658 | ||
659 | struct ds s = DS_EMPTY_INITIALIZER; | |
660 | va_list args; | |
661 | va_start(args, format); | |
662 | ds_put_format_valist(&s, format, args); | |
663 | va_end(args); | |
fff1b9c0 | 664 | |
2d9b49dd BP |
665 | if (ctx->xin->trace) { |
666 | oftrace_report(ctx->xin->trace, type, ds_cstr(&s)); | |
667 | } else { | |
668 | VLOG_DBG("bridge %s: %s", ctx->xbridge->name, ds_cstr(&s)); | |
669 | } | |
670 | ds_destroy(&s); | |
671 | } | |
fff1b9c0 | 672 | |
2d9b49dd BP |
673 | /* If tracing is enabled in 'ctx', appends a node of the given 'type' to the |
674 | * trace, whose text is 'title' followed by a formatted version of the | |
675 | * 'ofpacts_len' OpenFlow actions in 'ofpacts'. | |
676 | * | |
677 | * If tracing is not enabled, does nothing. */ | |
678 | static void | |
679 | xlate_report_actions(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
680 | const char *title, | |
d6bef3cc BP |
681 | const struct ofpact *ofpacts, size_t ofpacts_len) |
682 | { | |
2d9b49dd | 683 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
d6bef3cc | 684 | struct ds s = DS_EMPTY_INITIALIZER; |
2d9b49dd | 685 | ds_put_format(&s, "%s: ", title); |
50f96b10 | 686 | ofpacts_format(ofpacts, ofpacts_len, NULL, &s); |
2d9b49dd | 687 | oftrace_report(ctx->xin->trace, type, ds_cstr(&s)); |
d6bef3cc BP |
688 | ds_destroy(&s); |
689 | } | |
690 | } | |
691 | ||
2d9b49dd BP |
692 | /* If tracing is enabled in 'ctx', appends a node of type OFT_DETAIL to the |
693 | * trace, whose the message is a formatted version of the OpenFlow action set. | |
694 | * 'verb' should be "was" or "is", depending on whether the action set reported | |
695 | * is the new action set or the old one. | |
696 | * | |
697 | * If tracing is not enabled, does nothing. */ | |
698 | static void | |
699 | xlate_report_action_set(const struct xlate_ctx *ctx, const char *verb) | |
700 | { | |
701 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
702 | struct ofpbuf action_list; | |
703 | ofpbuf_init(&action_list, 0); | |
704 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
705 | if (action_list.size) { | |
706 | struct ds s = DS_EMPTY_INITIALIZER; | |
50f96b10 | 707 | ofpacts_format(action_list.data, action_list.size, NULL, &s); |
2d9b49dd BP |
708 | xlate_report(ctx, OFT_DETAIL, "action set %s: %s", |
709 | verb, ds_cstr(&s)); | |
710 | ds_destroy(&s); | |
711 | } else { | |
712 | xlate_report(ctx, OFT_DETAIL, "action set %s empty", verb); | |
713 | } | |
714 | ofpbuf_uninit(&action_list); | |
715 | } | |
716 | } | |
717 | ||
718 | ||
719 | /* If tracing is enabled in 'ctx', appends a node representing 'rule' (in | |
720 | * OpenFlow table 'table_id') to the trace and makes this node the parent for | |
721 | * future trace nodes. The caller should save ctx->xin->trace before calling | |
722 | * this function, then after tracing all of the activities under the table, | |
723 | * restore its previous value. | |
724 | * | |
725 | * If tracing is not enabled, does nothing. */ | |
726 | static void | |
727 | xlate_report_table(const struct xlate_ctx *ctx, struct rule_dpif *rule, | |
728 | uint8_t table_id) | |
729 | { | |
730 | if (OVS_LIKELY(!ctx->xin->trace)) { | |
731 | return; | |
732 | } | |
733 | ||
734 | struct ds s = DS_EMPTY_INITIALIZER; | |
735 | ds_put_format(&s, "%2d. ", table_id); | |
736 | if (rule == ctx->xin->ofproto->miss_rule) { | |
737 | ds_put_cstr(&s, "No match, and a \"packet-in\" is called for."); | |
738 | } else if (rule == ctx->xin->ofproto->no_packet_in_rule) { | |
739 | ds_put_cstr(&s, "No match."); | |
740 | } else if (rule == ctx->xin->ofproto->drop_frags_rule) { | |
741 | ds_put_cstr(&s, "Packets are IP fragments and " | |
742 | "the fragment handling mode is \"drop\"."); | |
743 | } else { | |
744 | minimatch_format(&rule->up.cr.match, | |
745 | ofproto_get_tun_tab(&ctx->xin->ofproto->up), | |
50f96b10 | 746 | NULL, &s, OFP_DEFAULT_PRIORITY); |
2d9b49dd BP |
747 | if (ds_last(&s) != ' ') { |
748 | ds_put_cstr(&s, ", "); | |
749 | } | |
750 | ds_put_format(&s, "priority %d", rule->up.cr.priority); | |
751 | if (rule->up.flow_cookie) { | |
752 | ds_put_format(&s, ", cookie %#"PRIx64, | |
753 | ntohll(rule->up.flow_cookie)); | |
754 | } | |
755 | } | |
756 | ctx->xin->trace = &oftrace_report(ctx->xin->trace, OFT_TABLE, | |
757 | ds_cstr(&s))->subs; | |
758 | ds_destroy(&s); | |
759 | } | |
760 | ||
761 | /* If tracing is enabled in 'ctx', adds an OFT_DETAIL trace node to 'ctx' | |
762 | * reporting the value of subfield 'sf'. | |
763 | * | |
764 | * If tracing is not enabled, does nothing. */ | |
765 | static void | |
766 | xlate_report_subfield(const struct xlate_ctx *ctx, | |
767 | const struct mf_subfield *sf) | |
768 | { | |
769 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
770 | struct ds s = DS_EMPTY_INITIALIZER; | |
771 | mf_format_subfield(sf, &s); | |
772 | ds_put_cstr(&s, " is now "); | |
773 | ||
774 | if (sf->ofs == 0 && sf->n_bits >= sf->field->n_bits) { | |
775 | union mf_value value; | |
776 | mf_get_value(sf->field, &ctx->xin->flow, &value); | |
50f96b10 | 777 | mf_format(sf->field, &value, NULL, NULL, &s); |
2d9b49dd BP |
778 | } else { |
779 | union mf_subvalue cst; | |
780 | mf_read_subfield(sf, &ctx->xin->flow, &cst); | |
781 | ds_put_hex(&s, &cst, sizeof cst); | |
782 | } | |
783 | ||
784 | xlate_report(ctx, OFT_DETAIL, "%s", ds_cstr(&s)); | |
785 | ||
786 | ds_destroy(&s); | |
787 | } | |
788 | } | |
789 | \f | |
84f0f298 RW |
790 | static void |
791 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
792 | { | |
417e7e66 | 793 | ovs_list_init(&xbridge->xbundles); |
84f0f298 RW |
794 | hmap_init(&xbridge->xports); |
795 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
796 | hash_pointer(xbridge->ofproto, 0)); | |
797 | } | |
798 | ||
799 | static void | |
800 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
801 | { | |
417e7e66 BW |
802 | ovs_list_init(&xbundle->xports); |
803 | ovs_list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
84f0f298 RW |
804 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, |
805 | hash_pointer(xbundle->ofbundle, 0)); | |
806 | } | |
807 | ||
808 | static void | |
809 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
810 | { | |
811 | hmap_init(&xport->skb_priorities); | |
812 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
813 | hash_pointer(xport->ofport, 0)); | |
814 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
815 | hash_ofp_port(xport->ofp_port)); | |
816 | } | |
817 | ||
818 | static void | |
819 | xlate_xbridge_set(struct xbridge *xbridge, | |
820 | struct dpif *dpif, | |
ec89fc6f | 821 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 822 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 823 | const struct mbridge *mbridge, |
46c88433 | 824 | const struct dpif_sflow *sflow, |
ce3955be | 825 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 826 | const struct netflow *netflow, |
4b97b70d | 827 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 828 | const struct dpif_backer_support *support) |
46c88433 | 829 | { |
46c88433 EJ |
830 | if (xbridge->ml != ml) { |
831 | mac_learning_unref(xbridge->ml); | |
832 | xbridge->ml = mac_learning_ref(ml); | |
833 | } | |
834 | ||
6d95c4e8 FL |
835 | if (xbridge->ms != ms) { |
836 | mcast_snooping_unref(xbridge->ms); | |
837 | xbridge->ms = mcast_snooping_ref(ms); | |
838 | } | |
839 | ||
46c88433 EJ |
840 | if (xbridge->mbridge != mbridge) { |
841 | mbridge_unref(xbridge->mbridge); | |
842 | xbridge->mbridge = mbridge_ref(mbridge); | |
843 | } | |
844 | ||
845 | if (xbridge->sflow != sflow) { | |
846 | dpif_sflow_unref(xbridge->sflow); | |
847 | xbridge->sflow = dpif_sflow_ref(sflow); | |
848 | } | |
849 | ||
850 | if (xbridge->ipfix != ipfix) { | |
851 | dpif_ipfix_unref(xbridge->ipfix); | |
852 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
853 | } | |
854 | ||
9d189a50 EJ |
855 | if (xbridge->stp != stp) { |
856 | stp_unref(xbridge->stp); | |
857 | xbridge->stp = stp_ref(stp); | |
858 | } | |
859 | ||
9efd308e DV |
860 | if (xbridge->rstp != rstp) { |
861 | rstp_unref(xbridge->rstp); | |
862 | xbridge->rstp = rstp_ref(rstp); | |
863 | } | |
864 | ||
ce3955be EJ |
865 | if (xbridge->netflow != netflow) { |
866 | netflow_unref(xbridge->netflow); | |
867 | xbridge->netflow = netflow_ref(netflow); | |
868 | } | |
869 | ||
89a8a7f0 | 870 | xbridge->dpif = dpif; |
46c88433 EJ |
871 | xbridge->forward_bpdu = forward_bpdu; |
872 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 873 | xbridge->support = *support; |
46c88433 EJ |
874 | } |
875 | ||
84f0f298 RW |
876 | static void |
877 | xlate_xbundle_set(struct xbundle *xbundle, | |
fed8962a EG |
878 | enum port_vlan_mode vlan_mode, uint16_t qinq_ethtype, |
879 | int vlan, unsigned long *trunks, unsigned long *cvlans, | |
f0fb825a | 880 | bool use_priority_tags, |
84f0f298 | 881 | const struct bond *bond, const struct lacp *lacp, |
c005f976 | 882 | bool floodable, bool protected) |
84f0f298 RW |
883 | { |
884 | ovs_assert(xbundle->xbridge); | |
885 | ||
886 | xbundle->vlan_mode = vlan_mode; | |
fed8962a | 887 | xbundle->qinq_ethtype = qinq_ethtype; |
84f0f298 RW |
888 | xbundle->vlan = vlan; |
889 | xbundle->trunks = trunks; | |
fed8962a | 890 | xbundle->cvlans = cvlans; |
84f0f298 RW |
891 | xbundle->use_priority_tags = use_priority_tags; |
892 | xbundle->floodable = floodable; | |
c005f976 | 893 | xbundle->protected = protected; |
84f0f298 RW |
894 | |
895 | if (xbundle->bond != bond) { | |
896 | bond_unref(xbundle->bond); | |
897 | xbundle->bond = bond_ref(bond); | |
898 | } | |
899 | ||
900 | if (xbundle->lacp != lacp) { | |
901 | lacp_unref(xbundle->lacp); | |
902 | xbundle->lacp = lacp_ref(lacp); | |
903 | } | |
904 | } | |
905 | ||
906 | static void | |
907 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
908 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 909 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 910 | const struct rstp_port* rstp_port, |
84f0f298 RW |
911 | enum ofputil_port_config config, enum ofputil_port_state state, |
912 | bool is_tunnel, bool may_enable) | |
913 | { | |
914 | xport->config = config; | |
915 | xport->state = state; | |
916 | xport->stp_port_no = stp_port_no; | |
917 | xport->is_tunnel = is_tunnel; | |
875ab130 | 918 | xport->pt_mode = netdev_get_pt_mode(netdev); |
84f0f298 RW |
919 | xport->may_enable = may_enable; |
920 | xport->odp_port = odp_port; | |
921 | ||
f025bcb7 JR |
922 | if (xport->rstp_port != rstp_port) { |
923 | rstp_port_unref(xport->rstp_port); | |
924 | xport->rstp_port = rstp_port_ref(rstp_port); | |
925 | } | |
926 | ||
84f0f298 RW |
927 | if (xport->cfm != cfm) { |
928 | cfm_unref(xport->cfm); | |
929 | xport->cfm = cfm_ref(cfm); | |
930 | } | |
931 | ||
932 | if (xport->bfd != bfd) { | |
933 | bfd_unref(xport->bfd); | |
934 | xport->bfd = bfd_ref(bfd); | |
935 | } | |
936 | ||
0477baa9 DF |
937 | if (xport->lldp != lldp) { |
938 | lldp_unref(xport->lldp); | |
939 | xport->lldp = lldp_ref(lldp); | |
940 | } | |
941 | ||
84f0f298 RW |
942 | if (xport->netdev != netdev) { |
943 | netdev_close(xport->netdev); | |
944 | xport->netdev = netdev_ref(netdev); | |
945 | } | |
946 | } | |
947 | ||
948 | static void | |
949 | xlate_xbridge_copy(struct xbridge *xbridge) | |
950 | { | |
951 | struct xbundle *xbundle; | |
952 | struct xport *xport; | |
953 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
954 | new_xbridge->ofproto = xbridge->ofproto; | |
955 | new_xbridge->name = xstrdup(xbridge->name); | |
956 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
957 | ||
958 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 959 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
960 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
961 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
962 | xbridge->forward_bpdu, xbridge->has_in_band, |
963 | &xbridge->support); | |
84f0f298 RW |
964 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
965 | xlate_xbundle_copy(new_xbridge, xbundle); | |
966 | } | |
967 | ||
968 | /* Copy xports which are not part of a xbundle */ | |
969 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
970 | if (!xport->xbundle) { | |
971 | xlate_xport_copy(new_xbridge, NULL, xport); | |
972 | } | |
973 | } | |
974 | } | |
975 | ||
976 | static void | |
977 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
978 | { | |
979 | struct xport *xport; | |
980 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
981 | new_xbundle->ofbundle = xbundle->ofbundle; | |
982 | new_xbundle->xbridge = xbridge; | |
983 | new_xbundle->name = xstrdup(xbundle->name); | |
984 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
985 | ||
fed8962a EG |
986 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, xbundle->qinq_ethtype, |
987 | xbundle->vlan, xbundle->trunks, xbundle->cvlans, | |
84f0f298 | 988 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, |
c005f976 | 989 | xbundle->floodable, xbundle->protected); |
84f0f298 RW |
990 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { |
991 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
992 | } | |
993 | } | |
994 | ||
995 | static void | |
996 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
997 | struct xport *xport) | |
998 | { | |
999 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
1000 | struct xport *new_xport = xzalloc(sizeof *xport); | |
1001 | new_xport->ofport = xport->ofport; | |
1002 | new_xport->ofp_port = xport->ofp_port; | |
1003 | new_xport->xbridge = xbridge; | |
1004 | xlate_xport_init(new_xcfg, new_xport); | |
1005 | ||
1006 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
1007 | xport->bfd, xport->lldp, xport->stp_port_no, |
1008 | xport->rstp_port, xport->config, xport->state, | |
1009 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
1010 | |
1011 | if (xport->peer) { | |
1012 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
1013 | if (peer) { | |
1014 | new_xport->peer = peer; | |
1015 | new_xport->peer->peer = new_xport; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (xbundle) { | |
1020 | new_xport->xbundle = xbundle; | |
417e7e66 | 1021 | ovs_list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); |
84f0f298 RW |
1022 | } |
1023 | ||
1024 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
1025 | new_pdscp = xmalloc(sizeof *pdscp); | |
1026 | new_pdscp->skb_priority = pdscp->skb_priority; | |
1027 | new_pdscp->dscp = pdscp->dscp; | |
1028 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
1029 | hash_int(new_pdscp->skb_priority, 0)); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
1034 | * configuration in xcfgp. | |
1035 | * | |
1036 | * This needs to be called after editing the xlate configuration. | |
1037 | * | |
1038 | * Functions that edit the new xlate configuration are | |
6cd20a22 | 1039 | * xlate_<ofproto/bundle/ofport>_set and xlate_<ofproto/bundle/ofport>_remove. |
84f0f298 RW |
1040 | * |
1041 | * A sample workflow: | |
1042 | * | |
1043 | * xlate_txn_start(); | |
1044 | * ... | |
1045 | * edit_xlate_configuration(); | |
1046 | * ... | |
1047 | * xlate_txn_commit(); */ | |
46c88433 | 1048 | void |
84f0f298 RW |
1049 | xlate_txn_commit(void) |
1050 | { | |
1051 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1052 | ||
1053 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
1054 | ovsrcu_synchronize(); |
1055 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
1056 | new_xcfg = NULL; |
1057 | } | |
1058 | ||
1059 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
1060 | * | |
1061 | * This needs to be called prior to editing the xlate configuration. */ | |
1062 | void | |
1063 | xlate_txn_start(void) | |
1064 | { | |
1065 | struct xbridge *xbridge; | |
1066 | struct xlate_cfg *xcfg; | |
1067 | ||
1068 | ovs_assert(!new_xcfg); | |
1069 | ||
1070 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
1071 | hmap_init(&new_xcfg->xbridges); | |
1072 | hmap_init(&new_xcfg->xbundles); | |
1073 | hmap_init(&new_xcfg->xports); | |
1074 | ||
1075 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1076 | if (!xcfg) { | |
1077 | return; | |
1078 | } | |
1079 | ||
1080 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
1081 | xlate_xbridge_copy(xbridge); | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | ||
1086 | static void | |
1087 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
1088 | { | |
1089 | struct xbridge *xbridge, *next_xbridge; | |
1090 | ||
1091 | if (!xcfg) { | |
1092 | return; | |
1093 | } | |
1094 | ||
1095 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
1096 | xlate_xbridge_remove(xcfg, xbridge); | |
1097 | } | |
1098 | ||
1099 | hmap_destroy(&xcfg->xbridges); | |
1100 | hmap_destroy(&xcfg->xbundles); | |
1101 | hmap_destroy(&xcfg->xports); | |
1102 | free(xcfg); | |
1103 | } | |
1104 | ||
1105 | void | |
1106 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 1107 | struct dpif *dpif, |
84f0f298 | 1108 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 1109 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
1110 | const struct mbridge *mbridge, |
1111 | const struct dpif_sflow *sflow, | |
1112 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 1113 | const struct netflow *netflow, |
b440dd8c JS |
1114 | bool forward_bpdu, bool has_in_band, |
1115 | const struct dpif_backer_support *support) | |
84f0f298 RW |
1116 | { |
1117 | struct xbridge *xbridge; | |
1118 | ||
1119 | ovs_assert(new_xcfg); | |
1120 | ||
1121 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
1122 | if (!xbridge) { | |
1123 | xbridge = xzalloc(sizeof *xbridge); | |
1124 | xbridge->ofproto = ofproto; | |
1125 | ||
1126 | xlate_xbridge_init(new_xcfg, xbridge); | |
1127 | } | |
1128 | ||
1129 | free(xbridge->name); | |
1130 | xbridge->name = xstrdup(name); | |
1131 | ||
34dd0d78 | 1132 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 1133 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
1134 | } |
1135 | ||
1136 | static void | |
1137 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 1138 | { |
46c88433 EJ |
1139 | struct xbundle *xbundle, *next_xbundle; |
1140 | struct xport *xport, *next_xport; | |
1141 | ||
1142 | if (!xbridge) { | |
1143 | return; | |
1144 | } | |
1145 | ||
1146 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 1147 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
1148 | } |
1149 | ||
1150 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 1151 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
1152 | } |
1153 | ||
84f0f298 | 1154 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 1155 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 1156 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
1157 | mbridge_unref(xbridge->mbridge); |
1158 | dpif_sflow_unref(xbridge->sflow); | |
1159 | dpif_ipfix_unref(xbridge->ipfix); | |
3570f7e4 | 1160 | netflow_unref(xbridge->netflow); |
795cc5c1 | 1161 | stp_unref(xbridge->stp); |
9efd308e | 1162 | rstp_unref(xbridge->rstp); |
795cc5c1 | 1163 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
1164 | free(xbridge->name); |
1165 | free(xbridge); | |
1166 | } | |
1167 | ||
84f0f298 RW |
1168 | void |
1169 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
1170 | { | |
1171 | struct xbridge *xbridge; | |
1172 | ||
1173 | ovs_assert(new_xcfg); | |
1174 | ||
1175 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
1176 | xlate_xbridge_remove(new_xcfg, xbridge); | |
1177 | } | |
1178 | ||
46c88433 EJ |
1179 | void |
1180 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
f0fb825a | 1181 | const char *name, enum port_vlan_mode vlan_mode, |
fed8962a EG |
1182 | uint16_t qinq_ethtype, int vlan, |
1183 | unsigned long *trunks, unsigned long *cvlans, | |
f0fb825a | 1184 | bool use_priority_tags, |
46c88433 | 1185 | const struct bond *bond, const struct lacp *lacp, |
c005f976 | 1186 | bool floodable, bool protected) |
46c88433 | 1187 | { |
84f0f298 | 1188 | struct xbundle *xbundle; |
46c88433 | 1189 | |
84f0f298 RW |
1190 | ovs_assert(new_xcfg); |
1191 | ||
1192 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
1193 | if (!xbundle) { |
1194 | xbundle = xzalloc(sizeof *xbundle); | |
1195 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 1196 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 1197 | |
84f0f298 | 1198 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
1199 | } |
1200 | ||
46c88433 EJ |
1201 | free(xbundle->name); |
1202 | xbundle->name = xstrdup(name); | |
1203 | ||
fed8962a | 1204 | xlate_xbundle_set(xbundle, vlan_mode, qinq_ethtype, vlan, trunks, cvlans, |
c005f976 | 1205 | use_priority_tags, bond, lacp, floodable, protected); |
46c88433 EJ |
1206 | } |
1207 | ||
84f0f298 RW |
1208 | static void |
1209 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 1210 | { |
5f03c983 | 1211 | struct xport *xport; |
46c88433 EJ |
1212 | |
1213 | if (!xbundle) { | |
1214 | return; | |
1215 | } | |
1216 | ||
5f03c983 | 1217 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
1218 | xport->xbundle = NULL; |
1219 | } | |
1220 | ||
84f0f298 | 1221 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
417e7e66 | 1222 | ovs_list_remove(&xbundle->list_node); |
46c88433 EJ |
1223 | bond_unref(xbundle->bond); |
1224 | lacp_unref(xbundle->lacp); | |
1225 | free(xbundle->name); | |
1226 | free(xbundle); | |
1227 | } | |
1228 | ||
84f0f298 RW |
1229 | void |
1230 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
1231 | { | |
1232 | struct xbundle *xbundle; | |
1233 | ||
1234 | ovs_assert(new_xcfg); | |
1235 | ||
1236 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
1237 | xlate_xbundle_remove(new_xcfg, xbundle); | |
1238 | } | |
1239 | ||
46c88433 EJ |
1240 | void |
1241 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
1242 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
1243 | odp_port_t odp_port, const struct netdev *netdev, | |
1244 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
1245 | const struct lldp *lldp, struct ofport_dpif *peer, |
1246 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 1247 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
1248 | enum ofputil_port_config config, |
1249 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 1250 | bool may_enable) |
46c88433 | 1251 | { |
55954f6e | 1252 | size_t i; |
84f0f298 RW |
1253 | struct xport *xport; |
1254 | ||
1255 | ovs_assert(new_xcfg); | |
46c88433 | 1256 | |
84f0f298 | 1257 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
1258 | if (!xport) { |
1259 | xport = xzalloc(sizeof *xport); | |
1260 | xport->ofport = ofport; | |
84f0f298 | 1261 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
1262 | xport->ofp_port = ofp_port; |
1263 | ||
84f0f298 | 1264 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
1265 | } |
1266 | ||
1267 | ovs_assert(xport->ofp_port == ofp_port); | |
1268 | ||
0477baa9 DF |
1269 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
1270 | stp_port_no, rstp_port, config, state, is_tunnel, | |
1271 | may_enable); | |
46c88433 EJ |
1272 | |
1273 | if (xport->peer) { | |
1274 | xport->peer->peer = NULL; | |
1275 | } | |
84f0f298 | 1276 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
1277 | if (xport->peer) { |
1278 | xport->peer->peer = xport; | |
1279 | } | |
1280 | ||
1281 | if (xport->xbundle) { | |
417e7e66 | 1282 | ovs_list_remove(&xport->bundle_node); |
46c88433 | 1283 | } |
84f0f298 | 1284 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 | 1285 | if (xport->xbundle) { |
417e7e66 | 1286 | ovs_list_insert(&xport->xbundle->xports, &xport->bundle_node); |
46c88433 | 1287 | } |
55954f6e EJ |
1288 | |
1289 | clear_skb_priorities(xport); | |
1290 | for (i = 0; i < n_qdscp; i++) { | |
1291 | struct skb_priority_to_dscp *pdscp; | |
1292 | uint32_t skb_priority; | |
1293 | ||
89a8a7f0 EJ |
1294 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1295 | &skb_priority)) { | |
55954f6e EJ |
1296 | continue; |
1297 | } | |
1298 | ||
1299 | pdscp = xmalloc(sizeof *pdscp); | |
1300 | pdscp->skb_priority = skb_priority; | |
1301 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1302 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1303 | hash_int(pdscp->skb_priority, 0)); | |
1304 | } | |
46c88433 EJ |
1305 | } |
1306 | ||
84f0f298 RW |
1307 | static void |
1308 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1309 | { |
46c88433 EJ |
1310 | if (!xport) { |
1311 | return; | |
1312 | } | |
1313 | ||
1314 | if (xport->peer) { | |
1315 | xport->peer->peer = NULL; | |
1316 | xport->peer = NULL; | |
1317 | } | |
1318 | ||
e621a12d | 1319 | if (xport->xbundle) { |
417e7e66 | 1320 | ovs_list_remove(&xport->bundle_node); |
e621a12d EJ |
1321 | } |
1322 | ||
55954f6e EJ |
1323 | clear_skb_priorities(xport); |
1324 | hmap_destroy(&xport->skb_priorities); | |
1325 | ||
84f0f298 | 1326 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1327 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1328 | ||
1329 | netdev_close(xport->netdev); | |
f025bcb7 | 1330 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1331 | cfm_unref(xport->cfm); |
1332 | bfd_unref(xport->bfd); | |
0477baa9 | 1333 | lldp_unref(xport->lldp); |
46c88433 EJ |
1334 | free(xport); |
1335 | } | |
1336 | ||
84f0f298 RW |
1337 | void |
1338 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1339 | { | |
1340 | struct xport *xport; | |
1341 | ||
1342 | ovs_assert(new_xcfg); | |
1343 | ||
1344 | xport = xport_lookup(new_xcfg, ofport); | |
1345 | xlate_xport_remove(new_xcfg, xport); | |
1346 | } | |
1347 | ||
ef377a58 JR |
1348 | static struct ofproto_dpif * |
1349 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1350 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1351 | { | |
e672ff9b | 1352 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1353 | const struct xport *xport; |
f9038ef6 | 1354 | |
e672ff9b JR |
1355 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1356 | ? tnl_port_receive(flow) | |
1357 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1358 | if (OVS_UNLIKELY(!xport)) { | |
1359 | return NULL; | |
ef377a58 | 1360 | } |
e672ff9b | 1361 | *xportp = xport; |
f9038ef6 | 1362 | if (ofp_in_port) { |
e672ff9b | 1363 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1364 | } |
e672ff9b | 1365 | return xport->xbridge->ofproto; |
ef377a58 JR |
1366 | } |
1367 | ||
1368 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1369 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1370 | struct ofproto_dpif * | |
1371 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1372 | ofp_port_t *ofp_in_port) | |
1373 | { | |
1374 | const struct xport *xport; | |
1375 | ||
1376 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1377 | } | |
1378 | ||
cc377352 | 1379 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1380 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1381 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1382 | * handles for those protocols if they're enabled. Caller may use the returned |
1383 | * pointers until quiescing, for longer term use additional references must | |
1384 | * be taken. | |
8449c4d6 | 1385 | * |
f9038ef6 | 1386 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1387 | */ |
8449c4d6 | 1388 | int |
5c476ea3 JR |
1389 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1390 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1391 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1392 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1393 | { |
ef377a58 | 1394 | struct ofproto_dpif *ofproto; |
84f0f298 | 1395 | const struct xport *xport; |
8449c4d6 | 1396 | |
ef377a58 | 1397 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1398 | |
f9038ef6 | 1399 | if (!ofproto) { |
cc377352 | 1400 | return ENODEV; |
8449c4d6 | 1401 | } |
8449c4d6 | 1402 | |
ef377a58 JR |
1403 | if (ofprotop) { |
1404 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1405 | } |
1406 | ||
1dfdb9b3 | 1407 | if (ipfix) { |
f9038ef6 | 1408 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1409 | } |
1410 | ||
1411 | if (sflow) { | |
f9038ef6 | 1412 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1413 | } |
1414 | ||
1415 | if (netflow) { | |
f9038ef6 | 1416 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1417 | } |
f9038ef6 | 1418 | |
cc377352 | 1419 | return 0; |
8449c4d6 EJ |
1420 | } |
1421 | ||
46c88433 | 1422 | static struct xbridge * |
84f0f298 | 1423 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1424 | { |
84f0f298 | 1425 | struct hmap *xbridges; |
46c88433 EJ |
1426 | struct xbridge *xbridge; |
1427 | ||
84f0f298 | 1428 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1429 | return NULL; |
1430 | } | |
1431 | ||
84f0f298 RW |
1432 | xbridges = &xcfg->xbridges; |
1433 | ||
46c88433 | 1434 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1435 | xbridges) { |
46c88433 EJ |
1436 | if (xbridge->ofproto == ofproto) { |
1437 | return xbridge; | |
1438 | } | |
1439 | } | |
1440 | return NULL; | |
1441 | } | |
1442 | ||
290835f9 BP |
1443 | static struct xbridge * |
1444 | xbridge_lookup_by_uuid(struct xlate_cfg *xcfg, const struct uuid *uuid) | |
1445 | { | |
1446 | struct xbridge *xbridge; | |
1447 | ||
1448 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
07a3cd5c | 1449 | if (uuid_equals(&xbridge->ofproto->uuid, uuid)) { |
290835f9 BP |
1450 | return xbridge; |
1451 | } | |
1452 | } | |
1453 | return NULL; | |
1454 | } | |
1455 | ||
46c88433 | 1456 | static struct xbundle * |
84f0f298 | 1457 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1458 | { |
84f0f298 | 1459 | struct hmap *xbundles; |
46c88433 EJ |
1460 | struct xbundle *xbundle; |
1461 | ||
84f0f298 | 1462 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1463 | return NULL; |
1464 | } | |
1465 | ||
84f0f298 RW |
1466 | xbundles = &xcfg->xbundles; |
1467 | ||
46c88433 | 1468 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1469 | xbundles) { |
46c88433 EJ |
1470 | if (xbundle->ofbundle == ofbundle) { |
1471 | return xbundle; | |
1472 | } | |
1473 | } | |
1474 | return NULL; | |
1475 | } | |
1476 | ||
1477 | static struct xport * | |
84f0f298 | 1478 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1479 | { |
84f0f298 | 1480 | struct hmap *xports; |
46c88433 EJ |
1481 | struct xport *xport; |
1482 | ||
84f0f298 | 1483 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1484 | return NULL; |
1485 | } | |
1486 | ||
84f0f298 RW |
1487 | xports = &xcfg->xports; |
1488 | ||
46c88433 | 1489 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1490 | xports) { |
46c88433 EJ |
1491 | if (xport->ofport == ofport) { |
1492 | return xport; | |
1493 | } | |
1494 | } | |
1495 | return NULL; | |
1496 | } | |
1497 | ||
40085e56 EJ |
1498 | static struct stp_port * |
1499 | xport_get_stp_port(const struct xport *xport) | |
1500 | { | |
92cf817b | 1501 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1502 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1503 | : NULL; | |
1504 | } | |
9d189a50 | 1505 | |
0d1cee12 | 1506 | static bool |
9d189a50 EJ |
1507 | xport_stp_learn_state(const struct xport *xport) |
1508 | { | |
40085e56 | 1509 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1510 | return sp |
1511 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1512 | : true; | |
9d189a50 EJ |
1513 | } |
1514 | ||
1515 | static bool | |
1516 | xport_stp_forward_state(const struct xport *xport) | |
1517 | { | |
40085e56 | 1518 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1519 | return sp |
1520 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1521 | : true; | |
9d189a50 EJ |
1522 | } |
1523 | ||
0d1cee12 | 1524 | static bool |
bacdb85a | 1525 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1526 | { |
1527 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1528 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1529 | } |
1530 | ||
9d189a50 EJ |
1531 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1532 | * were used to make the determination.*/ | |
1533 | static bool | |
1534 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1535 | { | |
bbbca389 | 1536 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1537 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1538 | return is_stp(flow); |
9d189a50 EJ |
1539 | } |
1540 | ||
1541 | static void | |
cf62fa4c | 1542 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1543 | { |
40085e56 | 1544 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1545 | struct dp_packet payload = *packet; |
1546 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1547 | |
1548 | /* Sink packets on ports that have STP disabled when the bridge has | |
1549 | * STP enabled. */ | |
1550 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1551 | return; | |
1552 | } | |
1553 | ||
1554 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1555 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1556 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1557 | } |
1558 | ||
cf62fa4c PS |
1559 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1560 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1561 | } |
1562 | } | |
1563 | ||
f025bcb7 JR |
1564 | static enum rstp_state |
1565 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1566 | { |
f025bcb7 JR |
1567 | return xport->rstp_port |
1568 | ? rstp_port_get_state(xport->rstp_port) | |
1569 | : RSTP_DISABLED; | |
9efd308e DV |
1570 | } |
1571 | ||
1572 | static bool | |
1573 | xport_rstp_learn_state(const struct xport *xport) | |
1574 | { | |
4b5f1996 DV |
1575 | return xport->xbridge->rstp && xport->rstp_port |
1576 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1577 | : true; | |
9efd308e DV |
1578 | } |
1579 | ||
1580 | static bool | |
1581 | xport_rstp_forward_state(const struct xport *xport) | |
1582 | { | |
4b5f1996 DV |
1583 | return xport->xbridge->rstp && xport->rstp_port |
1584 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1585 | : true; | |
9efd308e DV |
1586 | } |
1587 | ||
1588 | static bool | |
1589 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1590 | { | |
f025bcb7 | 1591 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1592 | } |
1593 | ||
1594 | static void | |
cf62fa4c | 1595 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1596 | { |
cf62fa4c PS |
1597 | struct dp_packet payload = *packet; |
1598 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1599 | |
f025bcb7 JR |
1600 | /* Sink packets on ports that have no RSTP. */ |
1601 | if (!xport->rstp_port) { | |
9efd308e DV |
1602 | return; |
1603 | } | |
1604 | ||
1605 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1606 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1607 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1608 | } |
1609 | ||
cf62fa4c PS |
1610 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1611 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1612 | dp_packet_size(&payload)); | |
9efd308e DV |
1613 | } |
1614 | } | |
1615 | ||
46c88433 EJ |
1616 | static struct xport * |
1617 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1618 | { | |
1619 | struct xport *xport; | |
1620 | ||
1621 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1622 | &xbridge->xports) { | |
1623 | if (xport->ofp_port == ofp_port) { | |
1624 | return xport; | |
1625 | } | |
1626 | } | |
1627 | return NULL; | |
1628 | } | |
1629 | ||
1630 | static odp_port_t | |
1631 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1632 | { | |
1633 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1634 | return xport ? xport->odp_port : ODPP_NONE; | |
1635 | } | |
1636 | ||
dd8cd4b4 SH |
1637 | static bool |
1638 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1639 | { | |
086fa873 BP |
1640 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1641 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1642 | } |
1643 | ||
1e684d7d | 1644 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1645 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1646 | int depth); | |
1647 | ||
1648 | static bool | |
1649 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1650 | { | |
1651 | struct group_dpif *group; | |
dd8cd4b4 | 1652 | |
5d08a275 | 1653 | group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, |
1f4a8933 | 1654 | ctx->xin->tables_version, false); |
db88b35c | 1655 | if (group) { |
76973237 | 1656 | return group_first_live_bucket(ctx, group, depth) != NULL; |
dc25893e | 1657 | } |
dd8cd4b4 | 1658 | |
dc25893e | 1659 | return false; |
dd8cd4b4 SH |
1660 | } |
1661 | ||
1662 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1663 | ||
1664 | static bool | |
1665 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1666 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1667 | { |
1668 | if (depth >= MAX_LIVENESS_RECURSION) { | |
2d9b49dd BP |
1669 | xlate_report_error(ctx, "bucket chaining exceeded %d links", |
1670 | MAX_LIVENESS_RECURSION); | |
dd8cd4b4 SH |
1671 | return false; |
1672 | } | |
1673 | ||
fdb1999b AZ |
1674 | return (!ofputil_bucket_has_liveness(bucket) |
1675 | || (bucket->watch_port != OFPP_ANY | |
1676 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1677 | || (bucket->watch_group != OFPG_ANY | |
1678 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1679 | } |
1680 | ||
1e684d7d | 1681 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1682 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1683 | const struct group_dpif *group, int depth) | |
1684 | { | |
1685 | struct ofputil_bucket *bucket; | |
07a3cd5c | 1686 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
dd8cd4b4 SH |
1687 | if (bucket_is_alive(ctx, bucket, depth)) { |
1688 | return bucket; | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | return NULL; | |
1693 | } | |
1694 | ||
1e684d7d | 1695 | static struct ofputil_bucket * |
fe7e5749 SH |
1696 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1697 | const struct group_dpif *group, | |
1698 | uint32_t basis) | |
1699 | { | |
1e684d7d | 1700 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 | 1701 | uint32_t best_score = 0; |
fe7e5749 | 1702 | |
1e684d7d | 1703 | struct ofputil_bucket *bucket; |
07a3cd5c | 1704 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
fe7e5749 | 1705 | if (bucket_is_alive(ctx, bucket, 0)) { |
c09cb861 LS |
1706 | uint32_t score = |
1707 | (hash_int(bucket->bucket_id, basis) & 0xffff) * bucket->weight; | |
fe7e5749 SH |
1708 | if (score >= best_score) { |
1709 | best_bucket = bucket; | |
1710 | best_score = score; | |
1711 | } | |
1712 | } | |
fe7e5749 SH |
1713 | } |
1714 | ||
1715 | return best_bucket; | |
1716 | } | |
1717 | ||
9583bc14 | 1718 | static bool |
46c88433 | 1719 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1720 | { |
1721 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1722 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1723 | } | |
1724 | ||
fed8962a EG |
1725 | static bool |
1726 | xbundle_allows_cvlan(const struct xbundle *bundle, uint16_t vlan) | |
1727 | { | |
1728 | return (!bundle->cvlans || bitmap_is_set(bundle->cvlans, vlan)); | |
1729 | } | |
1730 | ||
9583bc14 | 1731 | static bool |
f0fb825a | 1732 | xbundle_includes_vlan(const struct xbundle *xbundle, const struct xvlan *xvlan) |
46c88433 | 1733 | { |
f0fb825a EG |
1734 | switch (xbundle->vlan_mode) { |
1735 | case PORT_VLAN_ACCESS: | |
1736 | return xvlan->v[0].vid == xbundle->vlan && xvlan->v[1].vid == 0; | |
1737 | ||
1738 | case PORT_VLAN_TRUNK: | |
1739 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1740 | case PORT_VLAN_NATIVE_TAGGED: | |
1741 | return xbundle_trunks_vlan(xbundle, xvlan->v[0].vid); | |
1742 | ||
fed8962a EG |
1743 | case PORT_VLAN_DOT1Q_TUNNEL: |
1744 | return xvlan->v[0].vid == xbundle->vlan && | |
1745 | xbundle_allows_cvlan(xbundle, xvlan->v[1].vid); | |
1746 | ||
f0fb825a EG |
1747 | default: |
1748 | OVS_NOT_REACHED(); | |
1749 | } | |
46c88433 EJ |
1750 | } |
1751 | ||
1752 | static mirror_mask_t | |
1753 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1754 | { | |
1755 | return xbundle != &ofpp_none_bundle | |
1756 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1757 | : 0; | |
1758 | } | |
1759 | ||
1760 | static mirror_mask_t | |
1761 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1762 | { |
46c88433 EJ |
1763 | return xbundle != &ofpp_none_bundle |
1764 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1765 | : 0; | |
9583bc14 EJ |
1766 | } |
1767 | ||
46c88433 EJ |
1768 | static mirror_mask_t |
1769 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1770 | { |
46c88433 EJ |
1771 | return xbundle != &ofpp_none_bundle |
1772 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1773 | : 0; | |
1774 | } | |
1775 | ||
1776 | static struct xbundle * | |
2d9b49dd BP |
1777 | lookup_input_bundle__(const struct xbridge *xbridge, |
1778 | ofp_port_t in_port, struct xport **in_xportp) | |
46c88433 EJ |
1779 | { |
1780 | struct xport *xport; | |
9583bc14 EJ |
1781 | |
1782 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1783 | xport = get_ofp_port(xbridge, in_port); |
1784 | if (in_xportp) { | |
1785 | *in_xportp = xport; | |
9583bc14 | 1786 | } |
46c88433 EJ |
1787 | if (xport && xport->xbundle) { |
1788 | return xport->xbundle; | |
9583bc14 EJ |
1789 | } |
1790 | ||
6362203b YT |
1791 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1792 | * which a controller may use as the ingress port for traffic that | |
1793 | * it is sourcing. */ | |
1794 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1795 | return &ofpp_none_bundle; |
1796 | } | |
2d9b49dd BP |
1797 | return NULL; |
1798 | } | |
9583bc14 | 1799 | |
2d9b49dd BP |
1800 | static struct xbundle * |
1801 | lookup_input_bundle(const struct xlate_ctx *ctx, | |
1802 | ofp_port_t in_port, struct xport **in_xportp) | |
1803 | { | |
1804 | struct xbundle *xbundle = lookup_input_bundle__(ctx->xbridge, | |
1805 | in_port, in_xportp); | |
1806 | if (!xbundle) { | |
1807 | /* Odd. A few possible reasons here: | |
1808 | * | |
1809 | * - We deleted a port but there are still a few packets queued up | |
1810 | * from it. | |
1811 | * | |
1812 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1813 | * we don't know about. | |
1814 | * | |
1815 | * - The ofproto client didn't configure the port as part of a bundle. | |
1816 | * This is particularly likely to happen if a packet was received on | |
1817 | * the port after it was created, but before the client had a chance | |
1818 | * to configure its bundle. | |
1819 | */ | |
94783c7c | 1820 | xlate_report_error(ctx, "received packet on unknown port %"PRIu32, |
2d9b49dd | 1821 | in_port); |
9583bc14 | 1822 | } |
2d9b49dd | 1823 | return xbundle; |
9583bc14 EJ |
1824 | } |
1825 | ||
faa624b4 BP |
1826 | /* Mirrors the packet represented by 'ctx' to appropriate mirror destinations, |
1827 | * given the packet is ingressing or egressing on 'xbundle', which has ingress | |
1828 | * or egress (as appropriate) mirrors 'mirrors'. */ | |
9583bc14 | 1829 | static void |
7efbc3b7 BP |
1830 | mirror_packet(struct xlate_ctx *ctx, struct xbundle *xbundle, |
1831 | mirror_mask_t mirrors) | |
9583bc14 | 1832 | { |
f0fb825a EG |
1833 | struct xvlan in_xvlan; |
1834 | struct xvlan xvlan; | |
1835 | ||
faa624b4 BP |
1836 | /* Figure out what VLAN the packet is in (because mirrors can select |
1837 | * packets on basis of VLAN). */ | |
f0fb825a EG |
1838 | xvlan_extract(&ctx->xin->flow, &in_xvlan); |
1839 | if (!input_vid_is_valid(ctx, in_xvlan.v[0].vid, xbundle)) { | |
9583bc14 EJ |
1840 | return; |
1841 | } | |
f0fb825a | 1842 | xvlan_input_translate(xbundle, &in_xvlan, &xvlan); |
9583bc14 | 1843 | |
7efbc3b7 | 1844 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1845 | |
7efbc3b7 BP |
1846 | /* Don't mirror to destinations that we've already mirrored to. */ |
1847 | mirrors &= ~ctx->mirrors; | |
9583bc14 EJ |
1848 | if (!mirrors) { |
1849 | return; | |
1850 | } | |
1851 | ||
7efbc3b7 BP |
1852 | if (ctx->xin->resubmit_stats) { |
1853 | mirror_update_stats(xbridge->mbridge, mirrors, | |
1854 | ctx->xin->resubmit_stats->n_packets, | |
1855 | ctx->xin->resubmit_stats->n_bytes); | |
1856 | } | |
1857 | if (ctx->xin->xcache) { | |
1858 | struct xc_entry *entry; | |
1859 | ||
1860 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_MIRROR); | |
901a517e JR |
1861 | entry->mirror.mbridge = mbridge_ref(xbridge->mbridge); |
1862 | entry->mirror.mirrors = mirrors; | |
7efbc3b7 | 1863 | } |
9583bc14 | 1864 | |
faa624b4 BP |
1865 | /* 'mirrors' is a bit-mask of candidates for mirroring. Iterate as long as |
1866 | * some candidates remain. */ | |
9583bc14 | 1867 | while (mirrors) { |
7efbc3b7 | 1868 | const unsigned long *vlans; |
ec7ceaed EJ |
1869 | mirror_mask_t dup_mirrors; |
1870 | struct ofbundle *out; | |
ec7ceaed | 1871 | int out_vlan; |
1356dbd1 | 1872 | int snaplen; |
ec7ceaed | 1873 | |
faa624b4 | 1874 | /* Get the details of the mirror represented by the rightmost 1-bit. */ |
7efbc3b7 | 1875 | bool has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
1356dbd1 WT |
1876 | &vlans, &dup_mirrors, |
1877 | &out, &snaplen, &out_vlan); | |
ec7ceaed EJ |
1878 | ovs_assert(has_mirror); |
1879 | ||
1356dbd1 | 1880 | |
faa624b4 BP |
1881 | /* If this mirror selects on the basis of VLAN, and it does not select |
1882 | * 'vlan', then discard this mirror and go on to the next one. */ | |
ec7ceaed | 1883 | if (vlans) { |
f0fb825a | 1884 | ctx->wc->masks.vlans[0].tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
9583bc14 | 1885 | } |
f0fb825a | 1886 | if (vlans && !bitmap_is_set(vlans, xvlan.v[0].vid)) { |
9583bc14 EJ |
1887 | mirrors = zero_rightmost_1bit(mirrors); |
1888 | continue; | |
1889 | } | |
1890 | ||
faa624b4 BP |
1891 | /* Record the mirror, and the mirrors that output to the same |
1892 | * destination, so that we don't mirror to them again. This must be | |
1893 | * done now to ensure that output_normal(), below, doesn't recursively | |
1894 | * output to the same mirrors. */ | |
3d6151f3 | 1895 | ctx->mirrors |= dup_mirrors; |
1356dbd1 | 1896 | ctx->mirror_snaplen = snaplen; |
faa624b4 BP |
1897 | |
1898 | /* Send the packet to the mirror. */ | |
ec7ceaed | 1899 | if (out) { |
84f0f298 RW |
1900 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1901 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 | 1902 | if (out_xbundle) { |
f0fb825a | 1903 | output_normal(ctx, out_xbundle, &xvlan); |
46c88433 | 1904 | } |
f0fb825a | 1905 | } else if (xvlan.v[0].vid != out_vlan |
7efbc3b7 | 1906 | && !eth_addr_is_reserved(ctx->xin->flow.dl_dst)) { |
71f21279 | 1907 | struct xbundle *xb; |
f0fb825a | 1908 | uint16_t old_vid = xvlan.v[0].vid; |
9583bc14 | 1909 | |
f0fb825a | 1910 | xvlan.v[0].vid = out_vlan; |
71f21279 BP |
1911 | LIST_FOR_EACH (xb, list_node, &xbridge->xbundles) { |
1912 | if (xbundle_includes_vlan(xb, &xvlan) | |
1913 | && !xbundle_mirror_out(xbridge, xb)) { | |
1914 | output_normal(ctx, xb, &xvlan); | |
9583bc14 EJ |
1915 | } |
1916 | } | |
f0fb825a | 1917 | xvlan.v[0].vid = old_vid; |
9583bc14 | 1918 | } |
faa624b4 BP |
1919 | |
1920 | /* output_normal() could have recursively output (to different | |
1921 | * mirrors), so make sure that we don't send duplicates. */ | |
1922 | mirrors &= ~ctx->mirrors; | |
1356dbd1 | 1923 | ctx->mirror_snaplen = 0; |
9583bc14 EJ |
1924 | } |
1925 | } | |
1926 | ||
7efbc3b7 BP |
1927 | static void |
1928 | mirror_ingress_packet(struct xlate_ctx *ctx) | |
1929 | { | |
1930 | if (mbridge_has_mirrors(ctx->xbridge->mbridge)) { | |
7efbc3b7 | 1931 | struct xbundle *xbundle = lookup_input_bundle( |
2d9b49dd | 1932 | ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
7efbc3b7 BP |
1933 | if (xbundle) { |
1934 | mirror_packet(ctx, xbundle, | |
1935 | xbundle_mirror_src(ctx->xbridge, xbundle)); | |
1936 | } | |
1937 | } | |
1938 | } | |
1939 | ||
46c88433 | 1940 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
2d9b49dd | 1941 | * If so, returns true. Otherwise, returns false. |
9583bc14 EJ |
1942 | * |
1943 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1944 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1945 | * 0...4095. */ | |
1946 | static bool | |
2d9b49dd BP |
1947 | input_vid_is_valid(const struct xlate_ctx *ctx, |
1948 | uint16_t vid, struct xbundle *in_xbundle) | |
9583bc14 EJ |
1949 | { |
1950 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1951 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1952 | return true; |
1953 | } | |
1954 | ||
46c88433 | 1955 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1956 | case PORT_VLAN_ACCESS: |
1957 | if (vid) { | |
2d9b49dd BP |
1958 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" tagged " |
1959 | "packet received on port %s configured as VLAN " | |
fd13c6b5 | 1960 | "%d access port", vid, in_xbundle->name, |
2d9b49dd | 1961 | in_xbundle->vlan); |
9583bc14 EJ |
1962 | return false; |
1963 | } | |
1964 | return true; | |
1965 | ||
1966 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1967 | case PORT_VLAN_NATIVE_TAGGED: | |
1968 | if (!vid) { | |
1969 | /* Port must always carry its native VLAN. */ | |
1970 | return true; | |
1971 | } | |
1972 | /* Fall through. */ | |
1973 | case PORT_VLAN_TRUNK: | |
f0fb825a | 1974 | if (!xbundle_trunks_vlan(in_xbundle, vid)) { |
2d9b49dd BP |
1975 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" packet " |
1976 | "received on port %s not configured for " | |
1977 | "trunking VLAN %"PRIu16, | |
1978 | vid, in_xbundle->name, vid); | |
9583bc14 EJ |
1979 | return false; |
1980 | } | |
1981 | return true; | |
1982 | ||
fed8962a EG |
1983 | case PORT_VLAN_DOT1Q_TUNNEL: |
1984 | if (!xbundle_allows_cvlan(in_xbundle, vid)) { | |
1985 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" packet received " | |
1986 | "on dot1q-tunnel port %s that excludes this " | |
1987 | "VLAN", vid, in_xbundle->name); | |
1988 | return false; | |
1989 | } | |
1990 | return true; | |
1991 | ||
9583bc14 | 1992 | default: |
428b2edd | 1993 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1994 | } |
1995 | ||
1996 | } | |
1997 | ||
f0fb825a EG |
1998 | static void |
1999 | xvlan_copy(struct xvlan *dst, const struct xvlan *src) | |
2000 | { | |
2001 | *dst = *src; | |
2002 | } | |
2003 | ||
2004 | static void | |
2005 | xvlan_pop(struct xvlan *src) | |
2006 | { | |
2007 | memmove(&src->v[0], &src->v[1], sizeof(src->v) - sizeof(src->v[0])); | |
2008 | memset(&src->v[FLOW_MAX_VLAN_HEADERS - 1], 0, | |
2009 | sizeof(src->v[FLOW_MAX_VLAN_HEADERS - 1])); | |
2010 | } | |
2011 | ||
fed8962a EG |
2012 | static void |
2013 | xvlan_push_uninit(struct xvlan *src) | |
2014 | { | |
2015 | memmove(&src->v[1], &src->v[0], sizeof(src->v) - sizeof(src->v[0])); | |
2016 | memset(&src->v[0], 0, sizeof(src->v[0])); | |
2017 | } | |
2018 | ||
f0fb825a EG |
2019 | /* Extract VLAN information (headers) from flow */ |
2020 | static void | |
2021 | xvlan_extract(const struct flow *flow, struct xvlan *xvlan) | |
2022 | { | |
2023 | int i; | |
2024 | memset(xvlan, 0, sizeof(*xvlan)); | |
2025 | for (i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { | |
2026 | if (!eth_type_vlan(flow->vlans[i].tpid) || | |
2027 | !(flow->vlans[i].tci & htons(VLAN_CFI))) { | |
2028 | break; | |
2029 | } | |
2030 | xvlan->v[i].tpid = ntohs(flow->vlans[i].tpid); | |
2031 | xvlan->v[i].vid = vlan_tci_to_vid(flow->vlans[i].tci); | |
2032 | xvlan->v[i].pcp = ntohs(flow->vlans[i].tci) & VLAN_PCP_MASK; | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | /* Put VLAN information (headers) to flow */ | |
2037 | static void | |
2038 | xvlan_put(struct flow *flow, const struct xvlan *xvlan) | |
2039 | { | |
2040 | ovs_be16 tci; | |
2041 | int i; | |
2042 | for (i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { | |
2043 | tci = htons(xvlan->v[i].vid | (xvlan->v[i].pcp & VLAN_PCP_MASK)); | |
2044 | if (tci) { | |
2045 | tci |= htons(VLAN_CFI); | |
2046 | flow->vlans[i].tpid = xvlan->v[i].tpid ? | |
2047 | htons(xvlan->v[i].tpid) : | |
2048 | htons(ETH_TYPE_VLAN_8021Q); | |
2049 | } | |
2050 | flow->vlans[i].tci = tci; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | /* Given 'in_xvlan', extracted from the input 802.1Q headers received as part | |
2055 | * of a packet, and 'in_xbundle', the bundle on which the packet was received, | |
2056 | * returns the VLANs of the packet during bridge internal processing. */ | |
2057 | static void | |
2058 | xvlan_input_translate(const struct xbundle *in_xbundle, | |
2059 | const struct xvlan *in_xvlan, struct xvlan *xvlan) | |
2060 | { | |
2061 | ||
2062 | switch (in_xbundle->vlan_mode) { | |
2063 | case PORT_VLAN_ACCESS: | |
2064 | memset(xvlan, 0, sizeof(*xvlan)); | |
2065 | xvlan->v[0].tpid = in_xvlan->v[0].tpid ? in_xvlan->v[0].tpid : | |
2066 | ETH_TYPE_VLAN_8021Q; | |
2067 | xvlan->v[0].vid = in_xbundle->vlan; | |
2068 | xvlan->v[0].pcp = in_xvlan->v[0].pcp; | |
2069 | break; | |
2070 | ||
2071 | case PORT_VLAN_TRUNK: | |
2072 | xvlan_copy(xvlan, in_xvlan); | |
2073 | break; | |
2074 | ||
2075 | case PORT_VLAN_NATIVE_UNTAGGED: | |
2076 | case PORT_VLAN_NATIVE_TAGGED: | |
2077 | xvlan_copy(xvlan, in_xvlan); | |
2078 | if (!in_xvlan->v[0].vid) { | |
2079 | xvlan->v[0].tpid = in_xvlan->v[0].tpid ? in_xvlan->v[0].tpid : | |
2080 | ETH_TYPE_VLAN_8021Q; | |
2081 | xvlan->v[0].vid = in_xbundle->vlan; | |
2082 | xvlan->v[0].pcp = in_xvlan->v[0].pcp; | |
2083 | } | |
2084 | break; | |
2085 | ||
fed8962a EG |
2086 | case PORT_VLAN_DOT1Q_TUNNEL: |
2087 | xvlan_copy(xvlan, in_xvlan); | |
2088 | xvlan_push_uninit(xvlan); | |
2089 | xvlan->v[0].tpid = in_xbundle->qinq_ethtype; | |
2090 | xvlan->v[0].vid = in_xbundle->vlan; | |
2091 | xvlan->v[0].pcp = 0; | |
2092 | break; | |
2093 | ||
f0fb825a EG |
2094 | default: |
2095 | OVS_NOT_REACHED(); | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | /* Given 'xvlan', the VLANs of a packet during internal processing, and | |
2100 | * 'out_xbundle', a bundle on which the packet is to be output, returns the | |
2101 | * VLANs that should be included in output packet. */ | |
2102 | static void | |
2103 | xvlan_output_translate(const struct xbundle *out_xbundle, | |
2104 | const struct xvlan *xvlan, struct xvlan *out_xvlan) | |
9583bc14 | 2105 | { |
46c88433 | 2106 | switch (out_xbundle->vlan_mode) { |
9583bc14 | 2107 | case PORT_VLAN_ACCESS: |
f0fb825a EG |
2108 | memset(out_xvlan, 0, sizeof(*out_xvlan)); |
2109 | break; | |
9583bc14 EJ |
2110 | |
2111 | case PORT_VLAN_TRUNK: | |
2112 | case PORT_VLAN_NATIVE_TAGGED: | |
f0fb825a EG |
2113 | xvlan_copy(out_xvlan, xvlan); |
2114 | break; | |
9583bc14 EJ |
2115 | |
2116 | case PORT_VLAN_NATIVE_UNTAGGED: | |
f0fb825a EG |
2117 | xvlan_copy(out_xvlan, xvlan); |
2118 | if (xvlan->v[0].vid == out_xbundle->vlan) { | |
2119 | xvlan_pop(out_xvlan); | |
2120 | } | |
2121 | break; | |
9583bc14 | 2122 | |
fed8962a EG |
2123 | case PORT_VLAN_DOT1Q_TUNNEL: |
2124 | xvlan_copy(out_xvlan, xvlan); | |
2125 | xvlan_pop(out_xvlan); | |
2126 | break; | |
2127 | ||
9583bc14 | 2128 | default: |
428b2edd | 2129 | OVS_NOT_REACHED(); |
9583bc14 EJ |
2130 | } |
2131 | } | |
2132 | ||
fed8962a EG |
2133 | /* If output xbundle is dot1q-tunnel, set mask bits of cvlan */ |
2134 | static void | |
2135 | check_and_set_cvlan_mask(struct flow_wildcards *wc, | |
2136 | const struct xbundle *xbundle) | |
2137 | { | |
2138 | if (xbundle->vlan_mode == PORT_VLAN_DOT1Q_TUNNEL && xbundle->cvlans) { | |
2139 | wc->masks.vlans[1].tci = htons(0xffff); | |
2140 | } | |
2141 | } | |
2142 | ||
9583bc14 | 2143 | static void |
46c88433 | 2144 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
f0fb825a | 2145 | const struct xvlan *xvlan) |
9583bc14 | 2146 | { |
9583bc14 | 2147 | uint16_t vid; |
f0fb825a | 2148 | union flow_vlan_hdr old_vlans[FLOW_MAX_VLAN_HEADERS]; |
46c88433 | 2149 | struct xport *xport; |
e93ef1c7 JR |
2150 | struct xlate_bond_recirc xr; |
2151 | bool use_recirc = false; | |
f0fb825a | 2152 | struct xvlan out_xvlan; |
9583bc14 | 2153 | |
fed8962a EG |
2154 | check_and_set_cvlan_mask(ctx->wc, out_xbundle); |
2155 | ||
f0fb825a EG |
2156 | xvlan_output_translate(out_xbundle, xvlan, &out_xvlan); |
2157 | if (out_xbundle->use_priority_tags) { | |
2158 | out_xvlan.v[0].pcp = ntohs(ctx->xin->flow.vlans[0].tci) & | |
2159 | VLAN_PCP_MASK; | |
2160 | } | |
2161 | vid = out_xvlan.v[0].vid; | |
417e7e66 | 2162 | if (ovs_list_is_empty(&out_xbundle->xports)) { |
46c88433 EJ |
2163 | /* Partially configured bundle with no slaves. Drop the packet. */ |
2164 | return; | |
2165 | } else if (!out_xbundle->bond) { | |
417e7e66 | 2166 | xport = CONTAINER_OF(ovs_list_front(&out_xbundle->xports), struct xport, |
46c88433 | 2167 | bundle_node); |
9583bc14 | 2168 | } else { |
84f0f298 | 2169 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
49a73e0c | 2170 | struct flow_wildcards *wc = ctx->wc; |
84f0f298 | 2171 | struct ofport_dpif *ofport; |
adcf00ba | 2172 | |
a80aba3a AZ |
2173 | if (ctx->xbridge->support.odp.recirc) { |
2174 | /* In case recirculation is not actually in use, 'xr.recirc_id' | |
2175 | * will be set to '0', since a valid 'recirc_id' can | |
82f9f1f5 AZ |
2176 | * not be zero. */ |
2177 | bond_update_post_recirc_rules(out_xbundle->bond, | |
2178 | &xr.recirc_id, | |
2179 | &xr.hash_basis); | |
2180 | if (xr.recirc_id) { | |
2181 | /* Use recirculation instead of output. */ | |
2182 | use_recirc = true; | |
e93ef1c7 | 2183 | xr.hash_alg = OVS_HASH_ALG_L4; |
54ecb5a2 AZ |
2184 | /* Recirculation does not require unmasking hash fields. */ |
2185 | wc = NULL; | |
adcf00ba AZ |
2186 | } |
2187 | } | |
46c88433 | 2188 | |
54ecb5a2 AZ |
2189 | ofport = bond_choose_output_slave(out_xbundle->bond, |
2190 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 2191 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
2192 | |
2193 | if (!xport) { | |
9583bc14 EJ |
2194 | /* No slaves enabled, so drop packet. */ |
2195 | return; | |
2196 | } | |
d6fc5f57 | 2197 | |
e93ef1c7 | 2198 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 2199 | * accounting for this bond. */ |
e93ef1c7 | 2200 | if (!use_recirc) { |
b256dc52 JS |
2201 | if (ctx->xin->resubmit_stats) { |
2202 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
2203 | ctx->xin->resubmit_stats->n_bytes); | |
2204 | } | |
2205 | if (ctx->xin->xcache) { | |
2206 | struct xc_entry *entry; | |
2207 | struct flow *flow; | |
2208 | ||
2209 | flow = &ctx->xin->flow; | |
2210 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
901a517e JR |
2211 | entry->bond.bond = bond_ref(out_xbundle->bond); |
2212 | entry->bond.flow = xmemdup(flow, sizeof *flow); | |
2213 | entry->bond.vid = vid; | |
b256dc52 | 2214 | } |
d6fc5f57 | 2215 | } |
9583bc14 EJ |
2216 | } |
2217 | ||
f0fb825a EG |
2218 | memcpy(&old_vlans, &ctx->xin->flow.vlans, sizeof(old_vlans)); |
2219 | xvlan_put(&ctx->xin->flow, &out_xvlan); | |
9583bc14 | 2220 | |
e93ef1c7 | 2221 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
f0fb825a | 2222 | memcpy(&ctx->xin->flow.vlans, &old_vlans, sizeof(old_vlans)); |
9583bc14 EJ |
2223 | } |
2224 | ||
2225 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
2226 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
2227 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
2228 | static bool | |
2229 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
2230 | { | |
2231 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
2232 | return false; | |
2233 | } | |
2234 | ||
2235 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
2236 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
2237 | return false; | |
2238 | } | |
2239 | ||
2240 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
2241 | if (flow->nw_proto == ARP_OP_REPLY) { | |
2242 | return true; | |
2243 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
2244 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
2245 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2246 | ||
2247 | return flow->nw_src == flow->nw_dst; | |
2248 | } else { | |
2249 | return false; | |
2250 | } | |
2251 | } | |
2252 | ||
ff69c24a FL |
2253 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
2254 | * dropped. Returns true if they may be forwarded, false if they should be | |
2255 | * dropped. | |
2256 | * | |
2257 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
2258 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
2259 | * | |
2260 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
2261 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
2262 | * checked by input_vid_is_valid(). | |
2263 | * | |
2264 | * May also add tags to '*tags', although the current implementation only does | |
2265 | * so in one special case. | |
2266 | */ | |
2267 | static bool | |
2268 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
2269 | uint16_t vlan) | |
2270 | { | |
2271 | struct xbundle *in_xbundle = in_port->xbundle; | |
2272 | const struct xbridge *xbridge = ctx->xbridge; | |
2273 | struct flow *flow = &ctx->xin->flow; | |
2274 | ||
2275 | /* Drop frames for reserved multicast addresses | |
2276 | * only if forward_bpdu option is absent. */ | |
2277 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
2d9b49dd BP |
2278 | xlate_report(ctx, OFT_DETAIL, |
2279 | "packet has reserved destination MAC, dropping"); | |
ff69c24a FL |
2280 | return false; |
2281 | } | |
2282 | ||
2283 | if (in_xbundle->bond) { | |
2284 | struct mac_entry *mac; | |
2285 | ||
2286 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
2287 | flow->dl_dst)) { | |
2288 | case BV_ACCEPT: | |
2289 | break; | |
2290 | ||
2291 | case BV_DROP: | |
2d9b49dd BP |
2292 | xlate_report(ctx, OFT_DETAIL, |
2293 | "bonding refused admissibility, dropping"); | |
ff69c24a FL |
2294 | return false; |
2295 | ||
2296 | case BV_DROP_IF_MOVED: | |
2297 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
2298 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
2299 | if (mac |
2300 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
49a73e0c | 2301 | && (!is_gratuitous_arp(flow, ctx->wc) |
9d078ec2 | 2302 | || mac_entry_is_grat_arp_locked(mac))) { |
ff69c24a | 2303 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
2d9b49dd BP |
2304 | xlate_report(ctx, OFT_DETAIL, |
2305 | "SLB bond thinks this packet looped back, " | |
ff69c24a FL |
2306 | "dropping"); |
2307 | return false; | |
2308 | } | |
2309 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
2310 | break; | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | return true; | |
2315 | } | |
2316 | ||
2d9b49dd BP |
2317 | static bool |
2318 | update_learning_table__(const struct xbridge *xbridge, | |
2319 | struct xbundle *in_xbundle, struct eth_addr dl_src, | |
2320 | int vlan, bool is_grat_arp) | |
2321 | { | |
2322 | return (in_xbundle == &ofpp_none_bundle | |
2323 | || !mac_learning_update(xbridge->ml, dl_src, vlan, | |
2324 | is_grat_arp, | |
2325 | in_xbundle->bond != NULL, | |
2326 | in_xbundle->ofbundle)); | |
2327 | } | |
2328 | ||
ee047520 | 2329 | static void |
2d9b49dd | 2330 | update_learning_table(const struct xlate_ctx *ctx, |
064799a1 JR |
2331 | struct xbundle *in_xbundle, struct eth_addr dl_src, |
2332 | int vlan, bool is_grat_arp) | |
ee047520 | 2333 | { |
2d9b49dd BP |
2334 | if (!update_learning_table__(ctx->xbridge, in_xbundle, dl_src, vlan, |
2335 | is_grat_arp)) { | |
2336 | xlate_report_debug(ctx, OFT_DETAIL, "learned that "ETH_ADDR_FMT" is " | |
2337 | "on port %s in VLAN %d", | |
2338 | ETH_ADDR_ARGS(dl_src), in_xbundle->name, vlan); | |
ee047520 | 2339 | } |
9583bc14 EJ |
2340 | } |
2341 | ||
86e2dcdd FL |
2342 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2343 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
2344 | static void | |
2d9b49dd | 2345 | update_mcast_snooping_table4__(const struct xlate_ctx *ctx, |
06994f87 TLSC |
2346 | const struct flow *flow, |
2347 | struct mcast_snooping *ms, int vlan, | |
2348 | struct xbundle *in_xbundle, | |
2349 | const struct dp_packet *packet) | |
86e2dcdd FL |
2350 | OVS_REQ_WRLOCK(ms->rwlock) |
2351 | { | |
46445c63 | 2352 | const struct igmp_header *igmp; |
e3102e42 | 2353 | int count; |
46445c63 | 2354 | size_t offset; |
06994f87 | 2355 | ovs_be32 ip4 = flow->igmp_group_ip4; |
86e2dcdd | 2356 | |
46445c63 EC |
2357 | offset = (char *) dp_packet_l4(packet) - (char *) dp_packet_data(packet); |
2358 | igmp = dp_packet_at(packet, offset, IGMP_HEADER_LEN); | |
2359 | if (!igmp || csum(igmp, dp_packet_l4_size(packet)) != 0) { | |
2d9b49dd BP |
2360 | xlate_report_debug(ctx, OFT_DETAIL, |
2361 | "multicast snooping received bad IGMP " | |
2362 | "checksum on port %s in VLAN %d", | |
2363 | in_xbundle->name, vlan); | |
46445c63 EC |
2364 | return; |
2365 | } | |
2366 | ||
86e2dcdd FL |
2367 | switch (ntohs(flow->tp_src)) { |
2368 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2369 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
964a4d5f | 2370 | if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
2d9b49dd BP |
2371 | xlate_report_debug(ctx, OFT_DETAIL, |
2372 | "multicast snooping learned that " | |
2373 | IP_FMT" is on port %s in VLAN %d", | |
2374 | IP_ARGS(ip4), in_xbundle->name, vlan); | |
86e2dcdd FL |
2375 | } |
2376 | break; | |
2377 | case IGMP_HOST_LEAVE_MESSAGE: | |
964a4d5f | 2378 | if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
2d9b49dd BP |
2379 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping leaving " |
2380 | IP_FMT" is on port %s in VLAN %d", | |
2381 | IP_ARGS(ip4), in_xbundle->name, vlan); | |
86e2dcdd FL |
2382 | } |
2383 | break; | |
2384 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2385 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2d9b49dd BP |
2386 | in_xbundle->ofbundle)) { |
2387 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping query " | |
2388 | "from "IP_FMT" is on port %s in VLAN %d", | |
2389 | IP_ARGS(flow->nw_src), in_xbundle->name, vlan); | |
86e2dcdd FL |
2390 | } |
2391 | break; | |
e3102e42 | 2392 | case IGMPV3_HOST_MEMBERSHIP_REPORT: |
2d9b49dd BP |
2393 | count = mcast_snooping_add_report(ms, packet, vlan, |
2394 | in_xbundle->ofbundle); | |
2395 | if (count) { | |
2396 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping processed " | |
2397 | "%d addresses on port %s in VLAN %d", | |
2398 | count, in_xbundle->name, vlan); | |
e3102e42 TLSC |
2399 | } |
2400 | break; | |
86e2dcdd FL |
2401 | } |
2402 | } | |
2403 | ||
06994f87 | 2404 | static void |
2d9b49dd | 2405 | update_mcast_snooping_table6__(const struct xlate_ctx *ctx, |
06994f87 TLSC |
2406 | const struct flow *flow, |
2407 | struct mcast_snooping *ms, int vlan, | |
2408 | struct xbundle *in_xbundle, | |
2409 | const struct dp_packet *packet) | |
2410 | OVS_REQ_WRLOCK(ms->rwlock) | |
2411 | { | |
46445c63 | 2412 | const struct mld_header *mld; |
06994f87 | 2413 | int count; |
46445c63 EC |
2414 | size_t offset; |
2415 | ||
2416 | offset = (char *) dp_packet_l4(packet) - (char *) dp_packet_data(packet); | |
2417 | mld = dp_packet_at(packet, offset, MLD_HEADER_LEN); | |
2418 | ||
2419 | if (!mld || | |
2420 | packet_csum_upperlayer6(dp_packet_l3(packet), | |
2421 | mld, IPPROTO_ICMPV6, | |
2422 | dp_packet_l4_size(packet)) != 0) { | |
2d9b49dd BP |
2423 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping received " |
2424 | "bad MLD checksum on port %s in VLAN %d", | |
2425 | in_xbundle->name, vlan); | |
46445c63 EC |
2426 | return; |
2427 | } | |
06994f87 TLSC |
2428 | |
2429 | switch (ntohs(flow->tp_src)) { | |
2430 | case MLD_QUERY: | |
2431 | if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any) | |
2432 | && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) { | |
2d9b49dd BP |
2433 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping query on " |
2434 | "port %s in VLAN %d", in_xbundle->name, vlan); | |
06994f87 TLSC |
2435 | } |
2436 | break; | |
2437 | case MLD_REPORT: | |
2438 | case MLD_DONE: | |
2439 | case MLD2_REPORT: | |
2440 | count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle); | |
2441 | if (count) { | |
2d9b49dd BP |
2442 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping processed " |
2443 | "%d addresses on port %s in VLAN %d", | |
2444 | count, in_xbundle->name, vlan); | |
06994f87 TLSC |
2445 | } |
2446 | break; | |
2447 | } | |
2448 | } | |
2449 | ||
86e2dcdd FL |
2450 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2451 | * was received on 'in_xbundle' in 'vlan'. */ | |
2452 | static void | |
2d9b49dd | 2453 | update_mcast_snooping_table(const struct xlate_ctx *ctx, |
86e2dcdd | 2454 | const struct flow *flow, int vlan, |
e3102e42 TLSC |
2455 | struct xbundle *in_xbundle, |
2456 | const struct dp_packet *packet) | |
86e2dcdd | 2457 | { |
2d9b49dd | 2458 | struct mcast_snooping *ms = ctx->xbridge->ms; |
86e2dcdd FL |
2459 | struct xlate_cfg *xcfg; |
2460 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2461 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2462 | |
2463 | /* Don't learn the OFPP_NONE port. */ | |
2464 | if (in_xbundle == &ofpp_none_bundle) { | |
2465 | return; | |
2466 | } | |
2467 | ||
2468 | /* Don't learn from flood ports */ | |
2469 | mcast_xbundle = NULL; | |
2470 | ovs_rwlock_wrlock(&ms->rwlock); | |
2471 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2472 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2473 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2474 | if (mcast_xbundle == in_xbundle) { | |
2475 | break; | |
2476 | } | |
2477 | } | |
2478 | ||
2479 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
06994f87 | 2480 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2d9b49dd | 2481 | update_mcast_snooping_table4__(ctx, flow, ms, vlan, |
06994f87 TLSC |
2482 | in_xbundle, packet); |
2483 | } else { | |
2d9b49dd | 2484 | update_mcast_snooping_table6__(ctx, flow, ms, vlan, |
06994f87 TLSC |
2485 | in_xbundle, packet); |
2486 | } | |
86e2dcdd FL |
2487 | } |
2488 | ovs_rwlock_unlock(&ms->rwlock); | |
2489 | } | |
2490 | ||
2491 | /* send the packet to ports having the multicast group learned */ | |
2492 | static void | |
2493 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2494 | struct mcast_snooping *ms OVS_UNUSED, | |
2495 | struct mcast_group *grp, | |
f0fb825a EG |
2496 | struct xbundle *in_xbundle, |
2497 | const struct xvlan *xvlan) | |
86e2dcdd FL |
2498 | OVS_REQ_RDLOCK(ms->rwlock) |
2499 | { | |
2500 | struct xlate_cfg *xcfg; | |
2501 | struct mcast_group_bundle *b; | |
2502 | struct xbundle *mcast_xbundle; | |
2503 | ||
2504 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2505 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2506 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2507 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd | 2508 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast group port"); |
f0fb825a | 2509 | output_normal(ctx, mcast_xbundle, xvlan); |
86e2dcdd | 2510 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2511 | xlate_report(ctx, OFT_WARN, |
2512 | "mcast group port is unknown, dropping"); | |
86e2dcdd | 2513 | } else { |
2d9b49dd BP |
2514 | xlate_report(ctx, OFT_DETAIL, |
2515 | "mcast group port is input port, dropping"); | |
86e2dcdd FL |
2516 | } |
2517 | } | |
2518 | } | |
2519 | ||
2520 | /* send the packet to ports connected to multicast routers */ | |
2521 | static void | |
2522 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2523 | struct mcast_snooping *ms, | |
f0fb825a EG |
2524 | struct xbundle *in_xbundle, |
2525 | const struct xvlan *xvlan) | |
86e2dcdd FL |
2526 | OVS_REQ_RDLOCK(ms->rwlock) |
2527 | { | |
2528 | struct xlate_cfg *xcfg; | |
2529 | struct mcast_mrouter_bundle *mrouter; | |
2530 | struct xbundle *mcast_xbundle; | |
2531 | ||
2532 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2533 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2534 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
94a881c1 | 2535 | if (mcast_xbundle && mcast_xbundle != in_xbundle |
f0fb825a | 2536 | && mrouter->vlan == xvlan->v[0].vid) { |
2d9b49dd | 2537 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast router port"); |
f0fb825a | 2538 | output_normal(ctx, mcast_xbundle, xvlan); |
86e2dcdd | 2539 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2540 | xlate_report(ctx, OFT_WARN, |
2541 | "mcast router port is unknown, dropping"); | |
f0fb825a | 2542 | } else if (mrouter->vlan != xvlan->v[0].vid) { |
2d9b49dd BP |
2543 | xlate_report(ctx, OFT_DETAIL, |
2544 | "mcast router is on another vlan, dropping"); | |
86e2dcdd | 2545 | } else { |
2d9b49dd BP |
2546 | xlate_report(ctx, OFT_DETAIL, |
2547 | "mcast router port is input port, dropping"); | |
86e2dcdd FL |
2548 | } |
2549 | } | |
2550 | } | |
2551 | ||
2552 | /* send the packet to ports flagged to be flooded */ | |
2553 | static void | |
2554 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2555 | struct mcast_snooping *ms, | |
f0fb825a EG |
2556 | struct xbundle *in_xbundle, |
2557 | const struct xvlan *xvlan) | |
86e2dcdd FL |
2558 | OVS_REQ_RDLOCK(ms->rwlock) |
2559 | { | |
2560 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2561 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2562 | struct xbundle *mcast_xbundle; |
2563 | ||
2564 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2565 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2566 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2567 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd | 2568 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast flood port"); |
f0fb825a | 2569 | output_normal(ctx, mcast_xbundle, xvlan); |
86e2dcdd | 2570 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2571 | xlate_report(ctx, OFT_WARN, |
2572 | "mcast flood port is unknown, dropping"); | |
86e2dcdd | 2573 | } else { |
2d9b49dd BP |
2574 | xlate_report(ctx, OFT_DETAIL, |
2575 | "mcast flood port is input port, dropping"); | |
86e2dcdd FL |
2576 | } |
2577 | } | |
2578 | } | |
2579 | ||
8e04a33f FL |
2580 | /* forward the Reports to configured ports */ |
2581 | static void | |
2582 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2583 | struct mcast_snooping *ms, | |
f0fb825a EG |
2584 | struct xbundle *in_xbundle, |
2585 | const struct xvlan *xvlan) | |
8e04a33f FL |
2586 | OVS_REQ_RDLOCK(ms->rwlock) |
2587 | { | |
2588 | struct xlate_cfg *xcfg; | |
2589 | struct mcast_port_bundle *rport; | |
2590 | struct xbundle *mcast_xbundle; | |
2591 | ||
2592 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2593 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2594 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2595 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd BP |
2596 | xlate_report(ctx, OFT_DETAIL, |
2597 | "forwarding report to mcast flagged port"); | |
f0fb825a | 2598 | output_normal(ctx, mcast_xbundle, xvlan); |
8e04a33f | 2599 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2600 | xlate_report(ctx, OFT_WARN, |
2601 | "mcast port is unknown, dropping the report"); | |
8e04a33f | 2602 | } else { |
2d9b49dd BP |
2603 | xlate_report(ctx, OFT_DETAIL, |
2604 | "mcast port is input port, dropping the Report"); | |
8e04a33f FL |
2605 | } |
2606 | } | |
2607 | } | |
2608 | ||
682800a4 FL |
2609 | static void |
2610 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
f0fb825a | 2611 | struct xvlan *xvlan) |
682800a4 FL |
2612 | { |
2613 | struct xbundle *xbundle; | |
2614 | ||
2615 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2616 | if (xbundle != in_xbundle | |
f0fb825a | 2617 | && xbundle_includes_vlan(xbundle, xvlan) |
682800a4 FL |
2618 | && xbundle->floodable |
2619 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
f0fb825a | 2620 | output_normal(ctx, xbundle, xvlan); |
682800a4 FL |
2621 | } |
2622 | } | |
2031ef97 | 2623 | ctx->nf_output_iface = NF_OUT_FLOOD; |
682800a4 FL |
2624 | } |
2625 | ||
a75636c8 BP |
2626 | static bool |
2627 | is_ip_local_multicast(const struct flow *flow, struct flow_wildcards *wc) | |
2628 | { | |
2629 | if (flow->dl_type == htons(ETH_TYPE_IP)) { | |
2630 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2631 | return ip_is_local_multicast(flow->nw_dst); | |
2632 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2633 | memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst); | |
2634 | return ipv6_is_all_hosts(&flow->ipv6_dst); | |
2635 | } else { | |
2636 | return false; | |
2637 | } | |
2638 | } | |
2639 | ||
9583bc14 EJ |
2640 | static void |
2641 | xlate_normal(struct xlate_ctx *ctx) | |
2642 | { | |
49a73e0c | 2643 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2644 | struct flow *flow = &ctx->xin->flow; |
46c88433 EJ |
2645 | struct xbundle *in_xbundle; |
2646 | struct xport *in_port; | |
9583bc14 | 2647 | struct mac_entry *mac; |
d6d5bbc9 | 2648 | void *mac_port; |
f0fb825a EG |
2649 | struct xvlan in_xvlan; |
2650 | struct xvlan xvlan; | |
9583bc14 | 2651 | uint16_t vlan; |
9583bc14 | 2652 | |
33bf9176 BP |
2653 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2654 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
f0fb825a | 2655 | wc->masks.vlans[0].tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2656 | |
2d9b49dd | 2657 | in_xbundle = lookup_input_bundle(ctx, flow->in_port.ofp_port, &in_port); |
46c88433 | 2658 | if (!in_xbundle) { |
2d9b49dd | 2659 | xlate_report(ctx, OFT_WARN, "no input bundle, dropping"); |
9583bc14 EJ |
2660 | return; |
2661 | } | |
2662 | ||
2663 | /* Drop malformed frames. */ | |
f0fb825a EG |
2664 | if (eth_type_vlan(flow->dl_type) && |
2665 | !(flow->vlans[0].tci & htons(VLAN_CFI))) { | |
9583bc14 | 2666 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
2667 | xlate_report_error(ctx, "dropping packet with partial " |
2668 | "VLAN tag received on port %s", | |
2669 | in_xbundle->name); | |
9583bc14 | 2670 | } |
2d9b49dd | 2671 | xlate_report(ctx, OFT_WARN, "partial VLAN tag, dropping"); |
9583bc14 EJ |
2672 | return; |
2673 | } | |
2674 | ||
2675 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2676 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 | 2677 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
2678 | xlate_report_error(ctx, "dropping packet received on port %s, " |
2679 | "which is reserved exclusively for mirroring", | |
2680 | in_xbundle->name); | |
9583bc14 | 2681 | } |
2d9b49dd BP |
2682 | xlate_report(ctx, OFT_WARN, |
2683 | "input port is mirror output port, dropping"); | |
9583bc14 EJ |
2684 | return; |
2685 | } | |
2686 | ||
2687 | /* Check VLAN. */ | |
f0fb825a EG |
2688 | xvlan_extract(flow, &in_xvlan); |
2689 | if (!input_vid_is_valid(ctx, in_xvlan.v[0].vid, in_xbundle)) { | |
2d9b49dd BP |
2690 | xlate_report(ctx, OFT_WARN, |
2691 | "disallowed VLAN VID for this input port, dropping"); | |
9583bc14 EJ |
2692 | return; |
2693 | } | |
f0fb825a EG |
2694 | xvlan_input_translate(in_xbundle, &in_xvlan, &xvlan); |
2695 | vlan = xvlan.v[0].vid; | |
9583bc14 EJ |
2696 | |
2697 | /* Check other admissibility requirements. */ | |
2698 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2699 | return; | |
2700 | } | |
2701 | ||
2702 | /* Learn source MAC. */ | |
064799a1 | 2703 | bool is_grat_arp = is_gratuitous_arp(flow, wc); |
875ab130 BP |
2704 | if (ctx->xin->allow_side_effects |
2705 | && flow->packet_type == htonl(PT_ETH) | |
2706 | && in_port->pt_mode != NETDEV_PT_LEGACY_L3 | |
2707 | ) { | |
2d9b49dd | 2708 | update_learning_table(ctx, in_xbundle, flow->dl_src, vlan, |
064799a1 | 2709 | is_grat_arp); |
9583bc14 | 2710 | } |
064799a1 | 2711 | if (ctx->xin->xcache && in_xbundle != &ofpp_none_bundle) { |
b256dc52 JS |
2712 | struct xc_entry *entry; |
2713 | ||
064799a1 | 2714 | /* Save just enough info to update mac learning table later. */ |
b256dc52 | 2715 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); |
901a517e JR |
2716 | entry->normal.ofproto = ctx->xbridge->ofproto; |
2717 | entry->normal.in_port = flow->in_port.ofp_port; | |
2718 | entry->normal.dl_src = flow->dl_src; | |
2719 | entry->normal.vlan = vlan; | |
2720 | entry->normal.is_gratuitous_arp = is_grat_arp; | |
b256dc52 | 2721 | } |
9583bc14 EJ |
2722 | |
2723 | /* Determine output bundle. */ | |
86e2dcdd FL |
2724 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2725 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2726 | && eth_addr_is_multicast(flow->dl_dst) | |
06994f87 | 2727 | && is_ip_any(flow)) { |
86e2dcdd | 2728 | struct mcast_snooping *ms = ctx->xbridge->ms; |
06994f87 | 2729 | struct mcast_group *grp = NULL; |
86e2dcdd | 2730 | |
a75636c8 | 2731 | if (is_igmp(flow, wc)) { |
1bc24169 BP |
2732 | /* |
2733 | * IGMP packets need to take the slow path, in order to be | |
2734 | * processed for mdb updates. That will prevent expires | |
2735 | * firing off even after hosts have sent reports. | |
2736 | */ | |
2737 | ctx->xout->slow |= SLOW_ACTION; | |
2738 | ||
a75636c8 | 2739 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); |
d29f137b TLSC |
2740 | if (mcast_snooping_is_membership(flow->tp_src) || |
2741 | mcast_snooping_is_query(flow->tp_src)) { | |
df70a773 | 2742 | if (ctx->xin->allow_side_effects && ctx->xin->packet) { |
2d9b49dd | 2743 | update_mcast_snooping_table(ctx, flow, vlan, |
e3102e42 | 2744 | in_xbundle, ctx->xin->packet); |
d29f137b | 2745 | } |
86e2dcdd | 2746 | } |
d6d5bbc9 | 2747 | |
86e2dcdd FL |
2748 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2749 | ovs_rwlock_rdlock(&ms->rwlock); | |
f0fb825a | 2750 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); |
8e04a33f FL |
2751 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2752 | * forward IGMP Membership Reports only to those ports where | |
2753 | * multicast routers are attached. Alternatively stated: a | |
2754 | * snooping switch should not forward IGMP Membership Reports | |
2755 | * to ports on which only hosts are attached. | |
2756 | * An administrative control may be provided to override this | |
2757 | * restriction, allowing the report messages to be flooded to | |
2758 | * other ports. */ | |
f0fb825a | 2759 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, &xvlan); |
86e2dcdd FL |
2760 | ovs_rwlock_unlock(&ms->rwlock); |
2761 | } else { | |
2d9b49dd | 2762 | xlate_report(ctx, OFT_DETAIL, "multicast traffic, flooding"); |
f0fb825a | 2763 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd FL |
2764 | } |
2765 | return; | |
a75636c8 | 2766 | } else if (is_mld(flow, wc)) { |
06994f87 | 2767 | ctx->xout->slow |= SLOW_ACTION; |
df70a773 | 2768 | if (ctx->xin->allow_side_effects && ctx->xin->packet) { |
2d9b49dd | 2769 | update_mcast_snooping_table(ctx, flow, vlan, |
06994f87 TLSC |
2770 | in_xbundle, ctx->xin->packet); |
2771 | } | |
a75636c8 | 2772 | if (is_mld_report(flow, wc)) { |
06994f87 | 2773 | ovs_rwlock_rdlock(&ms->rwlock); |
f0fb825a EG |
2774 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); |
2775 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, &xvlan); | |
06994f87 TLSC |
2776 | ovs_rwlock_unlock(&ms->rwlock); |
2777 | } else { | |
2d9b49dd | 2778 | xlate_report(ctx, OFT_DETAIL, "MLD query, flooding"); |
f0fb825a | 2779 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
06994f87 | 2780 | } |
86e2dcdd | 2781 | } else { |
a75636c8 | 2782 | if (is_ip_local_multicast(flow, wc)) { |
86e2dcdd FL |
2783 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP |
2784 | * address in the 224.0.0.x range which are not IGMP must | |
2785 | * be forwarded on all ports */ | |
2d9b49dd BP |
2786 | xlate_report(ctx, OFT_DETAIL, |
2787 | "RFC4541: section 2.1.2, item 2, flooding"); | |
f0fb825a | 2788 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd FL |
2789 | return; |
2790 | } | |
2791 | } | |
2792 | ||
2793 | /* forwarding to group base ports */ | |
2794 | ovs_rwlock_rdlock(&ms->rwlock); | |
06994f87 TLSC |
2795 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2796 | grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan); | |
2797 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2798 | grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan); | |
2799 | } | |
86e2dcdd | 2800 | if (grp) { |
f0fb825a EG |
2801 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, &xvlan); |
2802 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, &xvlan); | |
2803 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); | |
9583bc14 | 2804 | } else { |
86e2dcdd | 2805 | if (mcast_snooping_flood_unreg(ms)) { |
2d9b49dd BP |
2806 | xlate_report(ctx, OFT_DETAIL, |
2807 | "unregistered multicast, flooding"); | |
f0fb825a | 2808 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd | 2809 | } else { |
f0fb825a EG |
2810 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); |
2811 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, &xvlan); | |
86e2dcdd | 2812 | } |
9583bc14 | 2813 | } |
86e2dcdd | 2814 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2815 | } else { |
86e2dcdd FL |
2816 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2817 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2818 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2819 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2820 | ||
2821 | if (mac_port) { | |
2822 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2823 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2824 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2d9b49dd | 2825 | xlate_report(ctx, OFT_DETAIL, "forwarding to learned port"); |
f0fb825a | 2826 | output_normal(ctx, mac_xbundle, &xvlan); |
86e2dcdd | 2827 | } else if (!mac_xbundle) { |
2d9b49dd BP |
2828 | xlate_report(ctx, OFT_WARN, |
2829 | "learned port is unknown, dropping"); | |
86e2dcdd | 2830 | } else { |
2d9b49dd BP |
2831 | xlate_report(ctx, OFT_DETAIL, |
2832 | "learned port is input port, dropping"); | |
86e2dcdd FL |
2833 | } |
2834 | } else { | |
2d9b49dd BP |
2835 | xlate_report(ctx, OFT_DETAIL, |
2836 | "no learned MAC for destination, flooding"); | |
f0fb825a | 2837 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd | 2838 | } |
9583bc14 EJ |
2839 | } |
2840 | } | |
2841 | ||
a6092018 BP |
2842 | /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The |
2843 | * 'probability' is the number of packets out of UINT32_MAX to sample. The | |
2844 | * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for | |
2845 | * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the | |
2846 | * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an | |
f69f713b BY |
2847 | * OVS_USERSPACE_ATTR_ACTIONS attribute is added. If 'emit_set_tunnel', |
2848 | * sample(sampling_port=1) would translate into datapath sample action | |
2849 | * set(tunnel(...)), sample(...) and it is used for sampling egress tunnel | |
2850 | * information. | |
9583bc14 EJ |
2851 | */ |
2852 | static size_t | |
a6092018 | 2853 | compose_sample_action(struct xlate_ctx *ctx, |
9583bc14 EJ |
2854 | const uint32_t probability, |
2855 | const union user_action_cookie *cookie, | |
8b7ea2d4 | 2856 | const size_t cookie_size, |
7321bda3 NM |
2857 | const odp_port_t tunnel_out_port, |
2858 | bool include_actions) | |
9583bc14 | 2859 | { |
b97f2c3a BY |
2860 | if (probability == 0) { |
2861 | /* No need to generate sampling or the inner action. */ | |
2862 | return 0; | |
2863 | } | |
2864 | ||
31b29c2e AZ |
2865 | /* If the slow path meter is configured by the controller, |
2866 | * insert a meter action before the user space action. */ | |
2867 | struct ofproto *ofproto = &ctx->xin->ofproto->up; | |
2868 | uint32_t meter_id = ofproto->slowpath_meter_id; | |
2869 | ||
2870 | /* When meter action is not required, avoid generate sample action | |
2871 | * for 100% sampling rate. */ | |
2872 | bool is_sample = probability < UINT32_MAX || meter_id != UINT32_MAX; | |
72471622 BY |
2873 | size_t sample_offset, actions_offset; |
2874 | if (is_sample) { | |
2875 | sample_offset = nl_msg_start_nested(ctx->odp_actions, | |
2876 | OVS_ACTION_ATTR_SAMPLE); | |
2877 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
2878 | probability); | |
2879 | actions_offset = nl_msg_start_nested(ctx->odp_actions, | |
2880 | OVS_SAMPLE_ATTR_ACTIONS); | |
2881 | } | |
9583bc14 | 2882 | |
31b29c2e AZ |
2883 | if (meter_id != UINT32_MAX) { |
2884 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_METER, meter_id); | |
2885 | } | |
2886 | ||
a6092018 BP |
2887 | odp_port_t odp_port = ofp_port_to_odp_port( |
2888 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port); | |
2889 | uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port, | |
2890 | flow_hash_5tuple(&ctx->xin->flow, 0)); | |
2891 | int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2892 | tunnel_out_port, | |
2893 | include_actions, | |
2894 | ctx->odp_actions); | |
89a8a7f0 | 2895 | |
72471622 BY |
2896 | if (is_sample) { |
2897 | nl_msg_end_nested(ctx->odp_actions, actions_offset); | |
2898 | nl_msg_end_nested(ctx->odp_actions, sample_offset); | |
2899 | } | |
9583bc14 | 2900 | |
9583bc14 EJ |
2901 | return cookie_offset; |
2902 | } | |
2903 | ||
a6092018 BP |
2904 | /* If sFLow is not enabled, returns 0 without doing anything. |
2905 | * | |
2906 | * If sFlow is enabled, appends a template "sample" action to the ODP actions | |
2907 | * in 'ctx'. This action is a template because some of the information needed | |
2908 | * to fill it out is not available until flow translation is complete. In this | |
2909 | * case, this functions returns an offset, which is always nonzero, to pass | |
2910 | * later to fix_sflow_action() to fill in the rest of the template. */ | |
9583bc14 | 2911 | static size_t |
a6092018 | 2912 | compose_sflow_action(struct xlate_ctx *ctx) |
9583bc14 | 2913 | { |
a6092018 BP |
2914 | struct dpif_sflow *sflow = ctx->xbridge->sflow; |
2915 | if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
9583bc14 EJ |
2916 | return 0; |
2917 | } | |
2918 | ||
a6092018 BP |
2919 | union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW }; |
2920 | return compose_sample_action(ctx, dpif_sflow_get_probability(sflow), | |
7321bda3 NM |
2921 | &cookie, sizeof cookie.sflow, ODPP_NONE, |
2922 | true); | |
9583bc14 EJ |
2923 | } |
2924 | ||
f69f713b BY |
2925 | /* If flow IPFIX is enabled, make sure IPFIX flow sample action |
2926 | * at egress point of tunnel port is just in front of corresponding | |
2927 | * output action. If bridge IPFIX is enabled, this appends an IPFIX | |
2928 | * sample action to 'ctx->odp_actions'. */ | |
9583bc14 | 2929 | static void |
a6092018 | 2930 | compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port) |
9583bc14 | 2931 | { |
a6092018 | 2932 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; |
8b7ea2d4 | 2933 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2934 | |
a6092018 | 2935 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2936 | return; |
2937 | } | |
2938 | ||
8b7ea2d4 WZ |
2939 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2940 | * number. */ | |
2941 | if (output_odp_port == ODPP_NONE && | |
a6092018 | 2942 | !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) { |
8b7ea2d4 WZ |
2943 | return; |
2944 | } | |
2945 | ||
f69f713b | 2946 | /* For output case, output_odp_port is valid. */ |
8b7ea2d4 | 2947 | if (output_odp_port != ODPP_NONE) { |
a6092018 | 2948 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) { |
8b7ea2d4 WZ |
2949 | return; |
2950 | } | |
2951 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2952 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2953 | */ | |
a6092018 BP |
2954 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) && |
2955 | dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) { | |
8b7ea2d4 WZ |
2956 | tunnel_out_port = output_odp_port; |
2957 | } | |
2958 | } | |
2959 | ||
a6092018 BP |
2960 | union user_action_cookie cookie = { |
2961 | .ipfix = { | |
2962 | .type = USER_ACTION_COOKIE_IPFIX, | |
2963 | .output_odp_port = output_odp_port, | |
2964 | } | |
2965 | }; | |
2966 | compose_sample_action(ctx, | |
2967 | dpif_ipfix_get_bridge_exporter_probability(ipfix), | |
7321bda3 NM |
2968 | &cookie, sizeof cookie.ipfix, tunnel_out_port, |
2969 | false); | |
9583bc14 EJ |
2970 | } |
2971 | ||
a6092018 BP |
2972 | /* Fix "sample" action according to data collected while composing ODP actions, |
2973 | * as described in compose_sflow_action(). | |
2974 | * | |
2975 | * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */ | |
9583bc14 | 2976 | static void |
a6092018 | 2977 | fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset) |
9583bc14 EJ |
2978 | { |
2979 | const struct flow *base = &ctx->base_flow; | |
2980 | union user_action_cookie *cookie; | |
2981 | ||
a6092018 | 2982 | cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset, |
9583bc14 EJ |
2983 | sizeof cookie->sflow); |
2984 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2985 | ||
a6092018 | 2986 | cookie->type = USER_ACTION_COOKIE_SFLOW; |
f0fb825a | 2987 | cookie->sflow.vlan_tci = base->vlans[0].tci; |
a6092018 BP |
2988 | |
2989 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2990 | * port information") for the interpretation of cookie->output. */ | |
2991 | switch (ctx->sflow_n_outputs) { | |
2992 | case 0: | |
2993 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2994 | cookie->sflow.output = 0x40000000 | 256; | |
2995 | break; | |
2996 | ||
2997 | case 1: | |
2998 | cookie->sflow.output = dpif_sflow_odp_port_to_ifindex( | |
2999 | ctx->xbridge->sflow, ctx->sflow_odp_port); | |
3000 | if (cookie->sflow.output) { | |
3001 | break; | |
3002 | } | |
3003 | /* Fall through. */ | |
3004 | default: | |
3005 | /* 0x80000000 means "multiple output ports. */ | |
3006 | cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs; | |
3007 | break; | |
3008 | } | |
9583bc14 EJ |
3009 | } |
3010 | ||
515793d5 BP |
3011 | static bool |
3012 | process_special(struct xlate_ctx *ctx, const struct xport *xport) | |
db7d4e46 | 3013 | { |
515793d5 | 3014 | const struct flow *flow = &ctx->xin->flow; |
49a73e0c | 3015 | struct flow_wildcards *wc = ctx->wc; |
46c88433 | 3016 | const struct xbridge *xbridge = ctx->xbridge; |
515793d5 BP |
3017 | const struct dp_packet *packet = ctx->xin->packet; |
3018 | enum slow_path_reason slow; | |
642dc74d | 3019 | |
46c88433 | 3020 | if (!xport) { |
515793d5 | 3021 | slow = 0; |
46c88433 | 3022 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 3023 | if (packet) { |
46c88433 | 3024 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 | 3025 | } |
515793d5 | 3026 | slow = SLOW_CFM; |
fab52e16 | 3027 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 3028 | if (packet) { |
46c88433 | 3029 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
3030 | /* If POLL received, immediately sends FINAL back. */ |
3031 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 3032 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 3033 | } |
db7d4e46 | 3034 | } |
515793d5 | 3035 | slow = SLOW_BFD; |
46c88433 | 3036 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
3037 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
3038 | if (packet) { | |
46c88433 | 3039 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 | 3040 | } |
515793d5 | 3041 | slow = SLOW_LACP; |
9efd308e DV |
3042 | } else if ((xbridge->stp || xbridge->rstp) && |
3043 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 3044 | if (packet) { |
f025bcb7 JR |
3045 | xbridge->stp |
3046 | ? stp_process_packet(xport, packet) | |
3047 | : rstp_process_packet(xport, packet); | |
db7d4e46 | 3048 | } |
515793d5 | 3049 | slow = SLOW_STP; |
19aef6ef | 3050 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
3051 | if (packet) { |
3052 | lldp_process_packet(xport->lldp, packet); | |
3053 | } | |
515793d5 | 3054 | slow = SLOW_LLDP; |
db7d4e46 | 3055 | } else { |
515793d5 BP |
3056 | slow = 0; |
3057 | } | |
3058 | ||
3059 | if (slow) { | |
3060 | ctx->xout->slow |= slow; | |
3061 | return true; | |
3062 | } else { | |
3063 | return false; | |
db7d4e46 JP |
3064 | } |
3065 | } | |
3066 | ||
a36de779 PS |
3067 | static int |
3068 | tnl_route_lookup_flow(const struct flow *oflow, | |
a8704b50 PS |
3069 | struct in6_addr *ip, struct in6_addr *src, |
3070 | struct xport **out_port) | |
a36de779 PS |
3071 | { |
3072 | char out_dev[IFNAMSIZ]; | |
3073 | struct xbridge *xbridge; | |
3074 | struct xlate_cfg *xcfg; | |
c2b878e0 TLSC |
3075 | struct in6_addr gw; |
3076 | struct in6_addr dst; | |
a36de779 | 3077 | |
c2b878e0 | 3078 | dst = flow_tnl_dst(&oflow->tunnel); |
ed52ca57 | 3079 | if (!ovs_router_lookup(oflow->pkt_mark, &dst, out_dev, src, &gw)) { |
a36de779 PS |
3080 | return -ENOENT; |
3081 | } | |
3082 | ||
c2b878e0 TLSC |
3083 | if (ipv6_addr_is_set(&gw) && |
3084 | (!IN6_IS_ADDR_V4MAPPED(&gw) || in6_addr_get_mapped_ipv4(&gw))) { | |
a36de779 PS |
3085 | *ip = gw; |
3086 | } else { | |
c2b878e0 | 3087 | *ip = dst; |
a36de779 PS |
3088 | } |
3089 | ||
3090 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
3091 | ovs_assert(xcfg); | |
3092 | ||
3093 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
3094 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
3095 | struct xport *port; | |
3096 | ||
3097 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
3098 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
3099 | *out_port = port; | |
3100 | return 0; | |
3101 | } | |
3102 | } | |
3103 | } | |
3104 | } | |
3105 | return -ENOENT; | |
3106 | } | |
3107 | ||
3108 | static int | |
cdd42eda JG |
3109 | compose_table_xlate(struct xlate_ctx *ctx, const struct xport *out_dev, |
3110 | struct dp_packet *packet) | |
a36de779 | 3111 | { |
cdd42eda | 3112 | struct xbridge *xbridge = out_dev->xbridge; |
a36de779 PS |
3113 | struct ofpact_output output; |
3114 | struct flow flow; | |
3115 | ||
3116 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
cf62fa4c | 3117 | flow_extract(packet, &flow); |
cdd42eda JG |
3118 | flow.in_port.ofp_port = out_dev->ofp_port; |
3119 | output.port = OFPP_TABLE; | |
a36de779 PS |
3120 | output.max_len = 0; |
3121 | ||
1f4a8933 JR |
3122 | return ofproto_dpif_execute_actions__(xbridge->ofproto, |
3123 | ctx->xin->tables_version, &flow, | |
3124 | NULL, &output.ofpact, sizeof output, | |
2d9b49dd | 3125 | ctx->depth, ctx->resubmits, packet); |
a36de779 PS |
3126 | } |
3127 | ||
c2b878e0 TLSC |
3128 | static void |
3129 | tnl_send_nd_request(struct xlate_ctx *ctx, const struct xport *out_dev, | |
3130 | const struct eth_addr eth_src, | |
3131 | struct in6_addr * ipv6_src, struct in6_addr * ipv6_dst) | |
3132 | { | |
3133 | struct dp_packet packet; | |
3134 | ||
3135 | dp_packet_init(&packet, 0); | |
16187903 | 3136 | compose_nd_ns(&packet, eth_src, ipv6_src, ipv6_dst); |
c2b878e0 TLSC |
3137 | compose_table_xlate(ctx, out_dev, &packet); |
3138 | dp_packet_uninit(&packet); | |
3139 | } | |
3140 | ||
a36de779 | 3141 | static void |
cdd42eda | 3142 | tnl_send_arp_request(struct xlate_ctx *ctx, const struct xport *out_dev, |
74ff3298 | 3143 | const struct eth_addr eth_src, |
a36de779 PS |
3144 | ovs_be32 ip_src, ovs_be32 ip_dst) |
3145 | { | |
cf62fa4c | 3146 | struct dp_packet packet; |
a36de779 | 3147 | |
cf62fa4c | 3148 | dp_packet_init(&packet, 0); |
eb0b295e BP |
3149 | compose_arp(&packet, ARP_OP_REQUEST, |
3150 | eth_src, eth_addr_zero, true, ip_src, ip_dst); | |
a36de779 | 3151 | |
cdd42eda | 3152 | compose_table_xlate(ctx, out_dev, &packet); |
cf62fa4c | 3153 | dp_packet_uninit(&packet); |
a36de779 PS |
3154 | } |
3155 | ||
7c12dfc5 SC |
3156 | static void |
3157 | propagate_tunnel_data_to_flow__(struct flow *dst_flow, | |
3158 | const struct flow *src_flow, | |
3159 | struct eth_addr dmac, struct eth_addr smac, | |
3160 | struct in6_addr s_ip6, ovs_be32 s_ip, | |
3161 | bool is_tnl_ipv6, uint8_t nw_proto) | |
3162 | { | |
3163 | dst_flow->dl_dst = dmac; | |
3164 | dst_flow->dl_src = smac; | |
3165 | ||
3166 | dst_flow->packet_type = htonl(PT_ETH); | |
3167 | dst_flow->nw_dst = src_flow->tunnel.ip_dst; | |
3168 | dst_flow->nw_src = src_flow->tunnel.ip_src; | |
3169 | dst_flow->ipv6_dst = src_flow->tunnel.ipv6_dst; | |
3170 | dst_flow->ipv6_src = src_flow->tunnel.ipv6_src; | |
3171 | ||
3172 | dst_flow->nw_tos = src_flow->tunnel.ip_tos; | |
3173 | dst_flow->nw_ttl = src_flow->tunnel.ip_ttl; | |
3174 | dst_flow->tp_dst = src_flow->tunnel.tp_dst; | |
3175 | dst_flow->tp_src = src_flow->tunnel.tp_src; | |
3176 | ||
3177 | if (is_tnl_ipv6) { | |
3178 | dst_flow->dl_type = htons(ETH_TYPE_IPV6); | |
3179 | if (ipv6_mask_is_any(&dst_flow->ipv6_src) | |
3180 | && !ipv6_mask_is_any(&s_ip6)) { | |
3181 | dst_flow->ipv6_src = s_ip6; | |
3182 | } | |
3183 | } else { | |
3184 | dst_flow->dl_type = htons(ETH_TYPE_IP); | |
3185 | if (dst_flow->nw_src == 0 && s_ip) { | |
3186 | dst_flow->nw_src = s_ip; | |
3187 | } | |
3188 | } | |
3189 | dst_flow->nw_proto = nw_proto; | |
3190 | } | |
3191 | ||
3192 | /* | |
3193 | * Populate the 'flow' and 'base_flow' L3 fields to do the post tunnel push | |
3194 | * translations. | |
3195 | */ | |
3196 | static void | |
3197 | propagate_tunnel_data_to_flow(struct xlate_ctx *ctx, struct eth_addr dmac, | |
3198 | struct eth_addr smac, struct in6_addr s_ip6, | |
3199 | ovs_be32 s_ip, bool is_tnl_ipv6, | |
3200 | enum ovs_vport_type tnl_type) | |
3201 | { | |
3202 | struct flow *base_flow, *flow; | |
3203 | flow = &ctx->xin->flow; | |
3204 | base_flow = &ctx->base_flow; | |
3205 | uint8_t nw_proto = 0; | |
3206 | ||
3207 | switch (tnl_type) { | |
3208 | case OVS_VPORT_TYPE_GRE: | |
3209 | nw_proto = IPPROTO_GRE; | |
3210 | break; | |
3211 | case OVS_VPORT_TYPE_VXLAN: | |
3212 | case OVS_VPORT_TYPE_GENEVE: | |
3213 | nw_proto = IPPROTO_UDP; | |
3214 | break; | |
3215 | case OVS_VPORT_TYPE_LISP: | |
3216 | case OVS_VPORT_TYPE_STT: | |
3217 | case OVS_VPORT_TYPE_UNSPEC: | |
3218 | case OVS_VPORT_TYPE_NETDEV: | |
3219 | case OVS_VPORT_TYPE_INTERNAL: | |
3220 | case __OVS_VPORT_TYPE_MAX: | |
3221 | default: | |
3222 | OVS_NOT_REACHED(); | |
3223 | break; | |
3224 | } | |
3225 | /* | |
3226 | * Update base_flow first followed by flow as the dst_flow gets modified | |
3227 | * in the function. | |
3228 | */ | |
3229 | propagate_tunnel_data_to_flow__(base_flow, flow, dmac, smac, s_ip6, s_ip, | |
3230 | is_tnl_ipv6, nw_proto); | |
3231 | propagate_tunnel_data_to_flow__(flow, flow, dmac, smac, s_ip6, s_ip, | |
3232 | is_tnl_ipv6, nw_proto); | |
3233 | } | |
3234 | ||
3235 | /* Validate if the transalated combined actions are OK to proceed. | |
3236 | * If actions consist of TRUNC action, it is not allowed to do the | |
3237 | * tunnel_push combine as it cannot update stats correctly. | |
3238 | */ | |
3239 | static bool | |
3240 | is_tunnel_actions_clone_ready(struct xlate_ctx *ctx) | |
3241 | { | |
3242 | struct nlattr *tnl_actions; | |
3243 | const struct nlattr *a; | |
3244 | unsigned int left; | |
3245 | size_t actions_len; | |
3246 | struct ofpbuf *actions = ctx->odp_actions; | |
3247 | ||
3248 | if (!actions) { | |
3249 | /* No actions, no harm in doing combine. */ | |
3250 | return true; | |
3251 | } | |
3252 | ||
3253 | /* Cannot perform tunnel push on slow path action CONTROLLER_OUTPUT. */ | |
3254 | if (ctx->xout->slow & SLOW_CONTROLLER) { | |
3255 | return false; | |
3256 | } | |
3257 | actions_len = actions->size; | |
3258 | ||
3259 | tnl_actions =(struct nlattr *)(actions->data); | |
3260 | NL_ATTR_FOR_EACH_UNSAFE (a, left, tnl_actions, actions_len) { | |
3261 | int type = nl_attr_type(a); | |
3262 | if (type == OVS_ACTION_ATTR_TRUNC) { | |
3263 | VLOG_DBG("Cannot do tunnel action-combine on trunc action"); | |
3264 | return false; | |
3265 | break; | |
3266 | } | |
3267 | } | |
3268 | return true; | |
3269 | } | |
3270 | ||
3271 | static bool | |
3272 | validate_and_combine_post_tnl_actions(struct xlate_ctx *ctx, | |
3273 | const struct xport *xport, | |
3274 | struct xport *out_dev, | |
3275 | struct ovs_action_push_tnl tnl_push_data) | |
3276 | { | |
3277 | const struct dpif_flow_stats *backup_resubmit_stats; | |
3278 | struct xlate_cache *backup_xcache; | |
3279 | bool nested_act_flag = false; | |
3280 | struct flow_wildcards tmp_flow_wc; | |
3281 | struct flow_wildcards *backup_flow_wc_ptr; | |
3282 | bool backup_side_effects; | |
3283 | const struct dp_packet *backup_pkt; | |
3284 | ||
3285 | memset(&tmp_flow_wc, 0 , sizeof tmp_flow_wc); | |
3286 | backup_flow_wc_ptr = ctx->wc; | |
3287 | ctx->wc = &tmp_flow_wc; | |
3288 | ctx->xin->wc = NULL; | |
3289 | backup_resubmit_stats = ctx->xin->resubmit_stats; | |
3290 | backup_xcache = ctx->xin->xcache; | |
3291 | backup_side_effects = ctx->xin->allow_side_effects; | |
3292 | backup_pkt = ctx->xin->packet; | |
3293 | ||
3294 | size_t push_action_size = 0; | |
3295 | size_t clone_ofs = nl_msg_start_nested(ctx->odp_actions, | |
3296 | OVS_ACTION_ATTR_CLONE); | |
3297 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); | |
3298 | push_action_size = ctx->odp_actions->size; | |
3299 | ||
3300 | ctx->xin->resubmit_stats = NULL; | |
3301 | ctx->xin->xcache = xlate_cache_new(); /* Use new temporary cache. */ | |
3302 | ctx->xin->allow_side_effects = false; | |
3303 | ctx->xin->packet = NULL; | |
3304 | ||
3305 | /* Push the cache entry for the tunnel first. */ | |
3306 | struct xc_entry *entry; | |
3307 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TUNNEL_HEADER); | |
3308 | entry->tunnel_hdr.hdr_size = tnl_push_data.header_len; | |
3309 | entry->tunnel_hdr.operation = ADD; | |
3310 | ||
3311 | apply_nested_clone_actions(ctx, xport, out_dev); | |
3312 | nested_act_flag = is_tunnel_actions_clone_ready(ctx); | |
3313 | ||
3314 | if (nested_act_flag) { | |
3315 | /* Similar to the stats update in revalidation, the x_cache entries | |
3316 | * are populated by the previous translation are used to update the | |
3317 | * stats correctly. | |
3318 | */ | |
3319 | if (backup_resubmit_stats) { | |
3320 | struct dpif_flow_stats tmp_resubmit_stats; | |
3321 | memcpy(&tmp_resubmit_stats, backup_resubmit_stats, | |
3322 | sizeof tmp_resubmit_stats); | |
3323 | xlate_push_stats(ctx->xin->xcache, &tmp_resubmit_stats); | |
3324 | } | |
3325 | xlate_cache_steal_entries(backup_xcache, ctx->xin->xcache); | |
3326 | } else { | |
3327 | /* Combine is not valid. */ | |
3328 | nl_msg_cancel_nested(ctx->odp_actions, clone_ofs); | |
3329 | goto out; | |
3330 | } | |
3331 | if (ctx->odp_actions->size > push_action_size) { | |
3332 | /* Update the CLONE action only when combined. */ | |
3333 | nl_msg_end_nested(ctx->odp_actions, clone_ofs); | |
3334 | } else { | |
3335 | nl_msg_cancel_nested(ctx->odp_actions, clone_ofs); | |
3336 | /* XXX : There is no real use-case for a tunnel push without | |
3337 | * any post actions. However keeping it now | |
3338 | * as is to make the 'make check' happy. Should remove when all the | |
3339 | * make check tunnel test case does something meaningful on a | |
3340 | * tunnel encap packets. | |
3341 | */ | |
3342 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); | |
3343 | } | |
3344 | ||
3345 | out: | |
3346 | /* Restore context status. */ | |
3347 | ctx->xin->resubmit_stats = backup_resubmit_stats; | |
3348 | xlate_cache_delete(ctx->xin->xcache); | |
3349 | ctx->xin->xcache = backup_xcache; | |
3350 | ctx->xin->allow_side_effects = backup_side_effects; | |
3351 | ctx->xin->packet = backup_pkt; | |
3352 | ctx->wc = backup_flow_wc_ptr; | |
3353 | return nested_act_flag; | |
3354 | } | |
3355 | ||
a36de779 | 3356 | static int |
81de18ec | 3357 | build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport, |
a36de779 PS |
3358 | const struct flow *flow, odp_port_t tunnel_odp_port) |
3359 | { | |
4975aa3e | 3360 | struct netdev_tnl_build_header_params tnl_params; |
a36de779 PS |
3361 | struct ovs_action_push_tnl tnl_push_data; |
3362 | struct xport *out_dev = NULL; | |
c2b878e0 TLSC |
3363 | ovs_be32 s_ip = 0, d_ip = 0; |
3364 | struct in6_addr s_ip6 = in6addr_any; | |
3365 | struct in6_addr d_ip6 = in6addr_any; | |
74ff3298 JR |
3366 | struct eth_addr smac; |
3367 | struct eth_addr dmac; | |
a36de779 | 3368 | int err; |
c2b878e0 TLSC |
3369 | char buf_sip6[INET6_ADDRSTRLEN]; |
3370 | char buf_dip6[INET6_ADDRSTRLEN]; | |
a36de779 | 3371 | |
7c12dfc5 SC |
3372 | /* Structures to backup Ethernet and IP of base_flow. */ |
3373 | struct flow old_base_flow; | |
3374 | struct flow old_flow; | |
3375 | ||
3376 | /* Backup flow & base_flow data. */ | |
3377 | memcpy(&old_base_flow, &ctx->base_flow, sizeof old_base_flow); | |
3378 | memcpy(&old_flow, &ctx->xin->flow, sizeof old_flow); | |
3379 | ||
a8704b50 | 3380 | err = tnl_route_lookup_flow(flow, &d_ip6, &s_ip6, &out_dev); |
a36de779 | 3381 | if (err) { |
2d9b49dd | 3382 | xlate_report(ctx, OFT_WARN, "native tunnel routing failed"); |
a36de779 PS |
3383 | return err; |
3384 | } | |
c2b878e0 | 3385 | |
2d9b49dd | 3386 | xlate_report(ctx, OFT_DETAIL, "tunneling to %s via %s", |
c2b878e0 TLSC |
3387 | ipv6_string_mapped(buf_dip6, &d_ip6), |
3388 | netdev_get_name(out_dev->netdev)); | |
a36de779 PS |
3389 | |
3390 | /* Use mac addr of bridge port of the peer. */ | |
74ff3298 | 3391 | err = netdev_get_etheraddr(out_dev->netdev, &smac); |
a36de779 | 3392 | if (err) { |
2d9b49dd BP |
3393 | xlate_report(ctx, OFT_WARN, |
3394 | "tunnel output device lacks Ethernet address"); | |
a36de779 PS |
3395 | return err; |
3396 | } | |
3397 | ||
c2b878e0 TLSC |
3398 | d_ip = in6_addr_get_mapped_ipv4(&d_ip6); |
3399 | if (d_ip) { | |
a8704b50 | 3400 | s_ip = in6_addr_get_mapped_ipv4(&s_ip6); |
a36de779 PS |
3401 | } |
3402 | ||
c2b878e0 | 3403 | err = tnl_neigh_lookup(out_dev->xbridge->name, &d_ip6, &dmac); |
a36de779 | 3404 | if (err) { |
2d9b49dd BP |
3405 | xlate_report(ctx, OFT_DETAIL, |
3406 | "neighbor cache miss for %s on bridge %s, " | |
c2b878e0 TLSC |
3407 | "sending %s request", |
3408 | buf_dip6, out_dev->xbridge->name, d_ip ? "ARP" : "ND"); | |
3409 | if (d_ip) { | |
3410 | tnl_send_arp_request(ctx, out_dev, smac, s_ip, d_ip); | |
3411 | } else { | |
3412 | tnl_send_nd_request(ctx, out_dev, smac, &s_ip6, &d_ip6); | |
3413 | } | |
a36de779 PS |
3414 | return err; |
3415 | } | |
c2b878e0 | 3416 | |
a36de779 PS |
3417 | if (ctx->xin->xcache) { |
3418 | struct xc_entry *entry; | |
3419 | ||
53902038 | 3420 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_NEIGH); |
901a517e JR |
3421 | ovs_strlcpy(entry->tnl_neigh_cache.br_name, out_dev->xbridge->name, |
3422 | sizeof entry->tnl_neigh_cache.br_name); | |
3423 | entry->tnl_neigh_cache.d_ipv6 = d_ip6; | |
a36de779 | 3424 | } |
81de18ec | 3425 | |
2d9b49dd | 3426 | xlate_report(ctx, OFT_DETAIL, "tunneling from "ETH_ADDR_FMT" %s" |
c2b878e0 TLSC |
3427 | " to "ETH_ADDR_FMT" %s", |
3428 | ETH_ADDR_ARGS(smac), ipv6_string_mapped(buf_sip6, &s_ip6), | |
3429 | ETH_ADDR_ARGS(dmac), buf_dip6); | |
3430 | ||
4975aa3e PS |
3431 | netdev_init_tnl_build_header_params(&tnl_params, flow, &s_ip6, dmac, smac); |
3432 | err = tnl_port_build_header(xport->ofport, &tnl_push_data, &tnl_params); | |
a36de779 PS |
3433 | if (err) { |
3434 | return err; | |
3435 | } | |
81765c00 BP |
3436 | tnl_push_data.tnl_port = tunnel_odp_port; |
3437 | tnl_push_data.out_port = out_dev->odp_port; | |
beb75a40 | 3438 | |
7c12dfc5 SC |
3439 | /* After tunnel header has been added, MAC and IP data of flow and |
3440 | * base_flow need to be set properly, since there is not recirculation | |
3441 | * any more when sending packet to tunnel. */ | |
beb75a40 | 3442 | |
7c12dfc5 SC |
3443 | propagate_tunnel_data_to_flow(ctx, dmac, smac, s_ip6, s_ip, |
3444 | tnl_params.is_ipv6, tnl_push_data.tnl_type); | |
3445 | ||
3446 | ||
3447 | /* Try to see if its possible to apply nested clone actions on tunnel. | |
3448 | * Revert the combined actions on tunnel if its not valid. | |
3449 | */ | |
3450 | if (!validate_and_combine_post_tnl_actions(ctx, xport, out_dev, | |
3451 | tnl_push_data)) { | |
3452 | /* Datapath is not doing the recirculation now, so lets make it | |
3453 | * happen explicitly. | |
3454 | */ | |
3455 | size_t clone_ofs = nl_msg_start_nested(ctx->odp_actions, | |
3456 | OVS_ACTION_ATTR_CLONE); | |
3457 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); | |
3458 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, 0); | |
3459 | nl_msg_end_nested(ctx->odp_actions, clone_ofs); | |
3460 | } | |
3461 | /* Restore the flows after the translation. */ | |
3462 | memcpy(&ctx->xin->flow, &old_flow, sizeof ctx->xin->flow); | |
3463 | memcpy(&ctx->base_flow, &old_base_flow, sizeof ctx->base_flow); | |
a36de779 PS |
3464 | return 0; |
3465 | } | |
3466 | ||
704bb0bf JS |
3467 | static void |
3468 | xlate_commit_actions(struct xlate_ctx *ctx) | |
3469 | { | |
3470 | bool use_masked = ctx->xbridge->support.masked_set_action; | |
3471 | ||
3472 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
3473 | ctx->odp_actions, ctx->wc, | |
1fc11c59 JS |
3474 | use_masked, ctx->pending_encap, |
3475 | ctx->encap_data); | |
f839892a | 3476 | ctx->pending_encap = false; |
1fc11c59 JS |
3477 | ofpbuf_delete(ctx->encap_data); |
3478 | ctx->encap_data = NULL; | |
704bb0bf JS |
3479 | } |
3480 | ||
07659514 | 3481 | static void |
72fe7578 | 3482 | clear_conntrack(struct xlate_ctx *ctx) |
07659514 | 3483 | { |
72fe7578 | 3484 | ctx->conntracked = false; |
6846e91e | 3485 | flow_clear_conntrack(&ctx->xin->flow); |
07659514 JS |
3486 | } |
3487 | ||
58d636ee BK |
3488 | static bool |
3489 | xlate_flow_is_protected(const struct xlate_ctx *ctx, const struct flow *flow, const struct xport *xport_out) | |
3490 | { | |
3491 | const struct xport *xport_in; | |
3492 | ||
3493 | if (!xport_out) { | |
3494 | return false; | |
3495 | } | |
3496 | ||
3497 | xport_in = get_ofp_port(ctx->xbridge, flow->in_port.ofp_port); | |
3498 | ||
3499 | return (xport_in && xport_in->xbundle && xport_out->xbundle && | |
3500 | xport_in->xbundle->protected && xport_out->xbundle->protected); | |
3501 | } | |
3502 | ||
8bdb2bdb SC |
3503 | /* Function to combine actions from following device/port with the current |
3504 | * device actions in openflow pipeline. Mainly used for the translation of | |
3505 | * patch/tunnel port output actions. It pushes the openflow state into a stack | |
3506 | * first, clear out to execute the packet through the device and finally pop | |
3507 | * the openflow state back from the stack. This is equivalent to cloning | |
3508 | * a packet in translation for the duration of execution. | |
3509 | * | |
3510 | * On output to a patch port, the output action will be replaced with set of | |
3511 | * nested actions on the peer patch port. | |
3512 | * Similarly on output to a tunnel port, the post nested actions on | |
3513 | * tunnel are chained up with the tunnel-push action. | |
3514 | */ | |
3515 | static void | |
3516 | apply_nested_clone_actions(struct xlate_ctx *ctx, const struct xport *in_dev, | |
3517 | struct xport *out_dev) | |
3518 | { | |
3519 | struct flow *flow = &ctx->xin->flow; | |
3520 | struct flow old_flow = ctx->xin->flow; | |
3521 | struct flow_tnl old_flow_tnl_wc = ctx->wc->masks.tunnel; | |
3522 | bool old_conntrack = ctx->conntracked; | |
3523 | bool old_was_mpls = ctx->was_mpls; | |
3524 | ovs_version_t old_version = ctx->xin->tables_version; | |
3525 | struct ofpbuf old_stack = ctx->stack; | |
3526 | uint8_t new_stack[1024]; | |
3527 | struct ofpbuf old_action_set = ctx->action_set; | |
3528 | struct ovs_list *old_trace = ctx->xin->trace; | |
3529 | uint64_t actset_stub[1024 / 8]; | |
3530 | ||
3531 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); | |
3532 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); | |
3533 | flow->in_port.ofp_port = out_dev->ofp_port; | |
3534 | flow->metadata = htonll(0); | |
3535 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
86bfb29a | 3536 | memset(&ctx->wc->masks.tunnel, 0, sizeof ctx->wc->masks.tunnel); |
8bdb2bdb SC |
3537 | flow->tunnel.metadata.tab = |
3538 | ofproto_get_tun_tab(&out_dev->xbridge->ofproto->up); | |
3539 | ctx->wc->masks.tunnel.metadata.tab = flow->tunnel.metadata.tab; | |
3540 | memset(flow->regs, 0, sizeof flow->regs); | |
3541 | flow->actset_output = OFPP_UNSET; | |
3542 | clear_conntrack(ctx); | |
3543 | ctx->xin->trace = xlate_report(ctx, OFT_BRIDGE, "bridge(\"%s\")", | |
3544 | out_dev->xbridge->name); | |
3545 | mirror_mask_t old_mirrors = ctx->mirrors; | |
3546 | bool independent_mirrors = out_dev->xbridge != ctx->xbridge; | |
3547 | if (independent_mirrors) { | |
3548 | ctx->mirrors = 0; | |
3549 | } | |
3550 | ctx->xbridge = out_dev->xbridge; | |
3551 | ||
3552 | /* The bridge is now known so obtain its table version. */ | |
3553 | ctx->xin->tables_version | |
3554 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); | |
3555 | ||
3556 | if (!process_special(ctx, out_dev) && may_receive(out_dev, ctx)) { | |
3557 | if (xport_stp_forward_state(out_dev) && | |
3558 | xport_rstp_forward_state(out_dev)) { | |
3559 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true, | |
3560 | false); | |
3561 | if (!ctx->freezing) { | |
3562 | xlate_action_set(ctx); | |
3563 | } | |
3564 | if (ctx->freezing) { | |
3565 | finish_freezing(ctx); | |
3566 | } | |
3567 | } else { | |
3568 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and | |
3569 | * the learning action look at the packet, then drop it. */ | |
3570 | struct flow old_base_flow = ctx->base_flow; | |
3571 | size_t old_size = ctx->odp_actions->size; | |
3572 | mirror_mask_t old_mirrors2 = ctx->mirrors; | |
3573 | ||
3574 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true, | |
3575 | false); | |
3576 | ctx->mirrors = old_mirrors2; | |
3577 | ctx->base_flow = old_base_flow; | |
3578 | ctx->odp_actions->size = old_size; | |
3579 | ||
3580 | /* Undo changes that may have been done for freezing. */ | |
3581 | ctx_cancel_freeze(ctx); | |
3582 | } | |
3583 | } | |
3584 | ||
3585 | ctx->xin->trace = old_trace; | |
3586 | if (independent_mirrors) { | |
3587 | ctx->mirrors = old_mirrors; | |
3588 | } | |
3589 | ctx->xin->flow = old_flow; | |
3590 | ctx->xbridge = in_dev->xbridge; | |
3591 | ofpbuf_uninit(&ctx->action_set); | |
3592 | ctx->action_set = old_action_set; | |
3593 | ofpbuf_uninit(&ctx->stack); | |
3594 | ctx->stack = old_stack; | |
3595 | ||
3596 | /* Restore calling bridge's lookup version. */ | |
3597 | ctx->xin->tables_version = old_version; | |
3598 | ||
3599 | /* Restore to calling bridge tunneling information */ | |
3600 | ctx->wc->masks.tunnel = old_flow_tnl_wc; | |
3601 | ||
3602 | /* The out bridge popping MPLS should have no effect on the original | |
3603 | * bridge. */ | |
3604 | ctx->was_mpls = old_was_mpls; | |
3605 | ||
3606 | /* The out bridge's conntrack execution should have no effect on the | |
3607 | * original bridge. */ | |
3608 | ctx->conntracked = old_conntrack; | |
3609 | ||
3610 | /* The fact that the out bridge exits (for any reason) does not mean | |
3611 | * that the original bridge should exit. Specifically, if the out | |
3612 | * bridge freezes translation, the original bridge must continue | |
3613 | * processing with the original, not the frozen packet! */ | |
3614 | ctx->exit = false; | |
3615 | ||
3616 | /* Out bridge errors do not propagate back. */ | |
3617 | ctx->error = XLATE_OK; | |
3618 | ||
3619 | if (ctx->xin->resubmit_stats) { | |
3620 | netdev_vport_inc_tx(in_dev->netdev, ctx->xin->resubmit_stats); | |
3621 | netdev_vport_inc_rx(out_dev->netdev, ctx->xin->resubmit_stats); | |
3622 | if (out_dev->bfd) { | |
3623 | bfd_account_rx(out_dev->bfd, ctx->xin->resubmit_stats); | |
3624 | } | |
3625 | } | |
3626 | if (ctx->xin->xcache) { | |
3627 | struct xc_entry *entry; | |
3628 | ||
3629 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
3630 | entry->dev.tx = netdev_ref(in_dev->netdev); | |
3631 | entry->dev.rx = netdev_ref(out_dev->netdev); | |
3632 | entry->dev.bfd = bfd_ref(out_dev->bfd); | |
3633 | } | |
3634 | } | |
3635 | ||
081617f0 JS |
3636 | static bool |
3637 | check_output_prerequisites(struct xlate_ctx *ctx, | |
3638 | const struct xport *xport, | |
3639 | struct flow *flow, | |
3640 | bool check_stp) | |
9583bc14 | 3641 | { |
49a73e0c | 3642 | struct flow_wildcards *wc = ctx->wc; |
9583bc14 | 3643 | |
46c88433 | 3644 | if (!xport) { |
2d9b49dd | 3645 | xlate_report(ctx, OFT_WARN, "Nonexistent output port"); |
081617f0 | 3646 | return false; |
46c88433 | 3647 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
2d9b49dd | 3648 | xlate_report(ctx, OFT_DETAIL, "OFPPC_NO_FWD set, skipping output"); |
081617f0 | 3649 | return false; |
1356dbd1 | 3650 | } else if (ctx->mirror_snaplen != 0 && xport->odp_port == ODPP_NONE) { |
2d9b49dd BP |
3651 | xlate_report(ctx, OFT_WARN, |
3652 | "Mirror truncate to ODPP_NONE, skipping output"); | |
081617f0 | 3653 | return false; |
58d636ee | 3654 | } else if (xlate_flow_is_protected(ctx, flow, xport)) { |
2d9b49dd BP |
3655 | xlate_report(ctx, OFT_WARN, |
3656 | "Flow is between protected ports, skipping output."); | |
081617f0 | 3657 | return false; |
0d1cee12 | 3658 | } else if (check_stp) { |
bbbca389 | 3659 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
3660 | if (!xport_stp_should_forward_bpdu(xport) && |
3661 | !xport_rstp_should_manage_bpdu(xport)) { | |
3662 | if (ctx->xbridge->stp != NULL) { | |
2d9b49dd BP |
3663 | xlate_report(ctx, OFT_WARN, |
3664 | "STP not in listening state, " | |
3665 | "skipping bpdu output"); | |
9efd308e | 3666 | } else if (ctx->xbridge->rstp != NULL) { |
2d9b49dd BP |
3667 | xlate_report(ctx, OFT_WARN, |
3668 | "RSTP not managing BPDU in this state, " | |
3669 | "skipping bpdu output"); | |
9efd308e | 3670 | } |
081617f0 | 3671 | return false; |
0d1cee12 | 3672 | } |
67818616 MV |
3673 | } else if ((xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) |
3674 | || (xport->bfd && bfd_should_process_flow(xport->bfd, flow, | |
3675 | wc))) { | |
3676 | /* Pass; STP should not block link health detection. */ | |
9efd308e DV |
3677 | } else if (!xport_stp_forward_state(xport) || |
3678 | !xport_rstp_forward_state(xport)) { | |
3679 | if (ctx->xbridge->stp != NULL) { | |
2d9b49dd BP |
3680 | xlate_report(ctx, OFT_WARN, |
3681 | "STP not in forwarding state, skipping output"); | |
9efd308e | 3682 | } else if (ctx->xbridge->rstp != NULL) { |
2d9b49dd BP |
3683 | xlate_report(ctx, OFT_WARN, |
3684 | "RSTP not in forwarding state, skipping output"); | |
9efd308e | 3685 | } |
081617f0 | 3686 | return false; |
0d1cee12 | 3687 | } |
9583bc14 | 3688 | } |
5dbfe239 ZB |
3689 | |
3690 | if (xport->pt_mode == NETDEV_PT_LEGACY_L2 && | |
3691 | flow->packet_type != htonl(PT_ETH)) { | |
3692 | xlate_report(ctx, OFT_WARN, "Trying to send non-Ethernet packet " | |
3693 | "through legacy L2 port. Dropping packet."); | |
3694 | return false; | |
3695 | } | |
3696 | ||
081617f0 JS |
3697 | return true; |
3698 | } | |
3699 | ||
3700 | static bool | |
3701 | terminate_native_tunnel(struct xlate_ctx *ctx, ofp_port_t ofp_port, | |
3702 | struct flow *flow, struct flow_wildcards *wc, | |
3703 | odp_port_t *tnl_port) | |
3704 | { | |
3705 | *tnl_port = ODPP_NONE; | |
3706 | ||
3707 | /* XXX: Write better Filter for tunnel port. We can use in_port | |
3708 | * in tunnel-port flow to avoid these checks completely. */ | |
3709 | if (ofp_port == OFPP_LOCAL && | |
3710 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
3711 | *tnl_port = tnl_port_map_lookup(flow, wc); | |
3712 | } | |
3713 | ||
3714 | return *tnl_port != ODPP_NONE; | |
3715 | } | |
3716 | ||
3717 | static void | |
3718 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, | |
3719 | const struct xlate_bond_recirc *xr, bool check_stp) | |
3720 | { | |
3721 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); | |
3722 | struct flow_wildcards *wc = ctx->wc; | |
3723 | struct flow *flow = &ctx->xin->flow; | |
3724 | struct flow_tnl flow_tnl; | |
3725 | union flow_vlan_hdr flow_vlans[FLOW_MAX_VLAN_HEADERS]; | |
3726 | uint8_t flow_nw_tos; | |
3727 | odp_port_t out_port, odp_port, odp_tnl_port; | |
3728 | bool is_native_tunnel = false; | |
3729 | uint8_t dscp; | |
5dbfe239 ZB |
3730 | struct eth_addr flow_dl_dst = flow->dl_dst; |
3731 | struct eth_addr flow_dl_src = flow->dl_src; | |
3732 | ovs_be32 flow_packet_type = flow->packet_type; | |
3733 | ovs_be16 flow_dl_type = flow->dl_type; | |
081617f0 JS |
3734 | |
3735 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
3736 | * before traversing a patch port. */ | |
3d2fbd70 | 3737 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 40); |
081617f0 JS |
3738 | memset(&flow_tnl, 0, sizeof flow_tnl); |
3739 | ||
3740 | if (!check_output_prerequisites(ctx, xport, flow, check_stp)) { | |
3741 | return; | |
3742 | } | |
9583bc14 | 3743 | |
875ab130 BP |
3744 | if (flow->packet_type == htonl(PT_ETH)) { |
3745 | /* Strip Ethernet header for legacy L3 port. */ | |
3746 | if (xport->pt_mode == NETDEV_PT_LEGACY_L3) { | |
3747 | flow->packet_type = PACKET_TYPE_BE(OFPHTN_ETHERTYPE, | |
3748 | ntohs(flow->dl_type)); | |
3749 | } | |
beb75a40 JS |
3750 | } |
3751 | ||
46c88433 | 3752 | if (xport->peer) { |
8bdb2bdb SC |
3753 | apply_nested_clone_actions(ctx, xport, xport->peer); |
3754 | return; | |
9583bc14 EJ |
3755 | } |
3756 | ||
f0fb825a | 3757 | memcpy(flow_vlans, flow->vlans, sizeof flow_vlans); |
33bf9176 | 3758 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 3759 | |
16194afd DDP |
3760 | if (count_skb_priorities(xport)) { |
3761 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
3762 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
3763 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
3764 | flow->nw_tos &= ~IP_DSCP_MASK; | |
3765 | flow->nw_tos |= dscp; | |
3766 | } | |
9583bc14 EJ |
3767 | } |
3768 | ||
46c88433 | 3769 | if (xport->is_tunnel) { |
c2b878e0 | 3770 | struct in6_addr dst; |
9583bc14 EJ |
3771 | /* Save tunnel metadata so that changes made due to |
3772 | * the Logical (tunnel) Port are not visible for any further | |
3773 | * matches, while explicit set actions on tunnel metadata are. | |
3774 | */ | |
a36de779 | 3775 | flow_tnl = flow->tunnel; |
49a73e0c | 3776 | odp_port = tnl_port_send(xport->ofport, flow, ctx->wc); |
4e022ec0 | 3777 | if (odp_port == ODPP_NONE) { |
2d9b49dd | 3778 | xlate_report(ctx, OFT_WARN, "Tunneling decided against output"); |
9583bc14 EJ |
3779 | goto out; /* restore flow_nw_tos */ |
3780 | } | |
c2b878e0 TLSC |
3781 | dst = flow_tnl_dst(&flow->tunnel); |
3782 | if (ipv6_addr_equals(&dst, &ctx->orig_tunnel_ipv6_dst)) { | |
2d9b49dd | 3783 | xlate_report(ctx, OFT_WARN, "Not tunneling to our own address"); |
9583bc14 EJ |
3784 | goto out; /* restore flow_nw_tos */ |
3785 | } | |
3786 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 3787 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 3788 | } |
b256dc52 JS |
3789 | if (ctx->xin->xcache) { |
3790 | struct xc_entry *entry; | |
3791 | ||
3792 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
901a517e | 3793 | entry->dev.tx = netdev_ref(xport->netdev); |
b256dc52 | 3794 | } |
9583bc14 | 3795 | out_port = odp_port; |
a36de779 | 3796 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
2d9b49dd | 3797 | xlate_report(ctx, OFT_DETAIL, "output to native tunnel"); |
081617f0 | 3798 | is_native_tunnel = true; |
a36de779 | 3799 | } else { |
2d9b49dd | 3800 | xlate_report(ctx, OFT_DETAIL, "output to kernel tunnel"); |
1520ef4f | 3801 | commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions); |
a36de779 PS |
3802 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
3803 | } | |
9583bc14 | 3804 | } else { |
46c88433 | 3805 | odp_port = xport->odp_port; |
7614e5d0 | 3806 | out_port = odp_port; |
9583bc14 | 3807 | } |
9583bc14 | 3808 | |
4e022ec0 | 3809 | if (out_port != ODPP_NONE) { |
081617f0 | 3810 | /* Commit accumulated flow updates before output. */ |
704bb0bf | 3811 | xlate_commit_actions(ctx); |
adcf00ba | 3812 | |
e93ef1c7 | 3813 | if (xr) { |
081617f0 | 3814 | /* Recirculate the packet. */ |
347bf289 | 3815 | struct ovs_action_hash *act_hash; |
adcf00ba | 3816 | |
347bf289 | 3817 | /* Hash action. */ |
1520ef4f | 3818 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, |
347bf289 AZ |
3819 | OVS_ACTION_ATTR_HASH, |
3820 | sizeof *act_hash); | |
3821 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 3822 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
3823 | |
3824 | /* Recirc action. */ | |
1520ef4f | 3825 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 3826 | xr->recirc_id); |
081617f0 JS |
3827 | } else if (is_native_tunnel) { |
3828 | /* Output to native tunnel port. */ | |
3829 | build_tunnel_send(ctx, xport, flow, odp_port); | |
3830 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
a36de779 | 3831 | |
081617f0 JS |
3832 | } else if (terminate_native_tunnel(ctx, ofp_port, flow, wc, |
3833 | &odp_tnl_port)) { | |
3834 | /* Intercept packet to be received on native tunnel port. */ | |
3835 | nl_msg_put_odp_port(ctx->odp_actions, OVS_ACTION_ATTR_TUNNEL_POP, | |
3836 | odp_tnl_port); | |
a36de779 | 3837 | |
081617f0 JS |
3838 | } else { |
3839 | /* Tunnel push-pop action is not compatible with | |
3840 | * IPFIX action. */ | |
3841 | compose_ipfix_action(ctx, out_port); | |
3842 | ||
3843 | /* Handle truncation of the mirrored packet. */ | |
3844 | if (ctx->mirror_snaplen > 0 && | |
3845 | ctx->mirror_snaplen < UINT16_MAX) { | |
3846 | struct ovs_action_trunc *trunc; | |
3847 | ||
3848 | trunc = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
3849 | OVS_ACTION_ATTR_TRUNC, | |
3850 | sizeof *trunc); | |
3851 | trunc->max_len = ctx->mirror_snaplen; | |
3852 | if (!ctx->xbridge->support.trunc) { | |
3853 | ctx->xout->slow |= SLOW_ACTION; | |
1356dbd1 WT |
3854 | } |
3855 | } | |
081617f0 JS |
3856 | |
3857 | nl_msg_put_odp_port(ctx->odp_actions, | |
3858 | OVS_ACTION_ATTR_OUTPUT, | |
3859 | out_port); | |
adcf00ba | 3860 | } |
9583bc14 | 3861 | |
6cbbf4fa EJ |
3862 | ctx->sflow_odp_port = odp_port; |
3863 | ctx->sflow_n_outputs++; | |
2031ef97 | 3864 | ctx->nf_output_iface = ofp_port; |
6cbbf4fa EJ |
3865 | } |
3866 | ||
7efbc3b7 BP |
3867 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
3868 | mirror_packet(ctx, xport->xbundle, | |
3869 | xbundle_mirror_dst(xport->xbundle->xbridge, | |
3870 | xport->xbundle)); | |
3871 | } | |
3872 | ||
6cbbf4fa | 3873 | out: |
9583bc14 | 3874 | /* Restore flow */ |
f0fb825a | 3875 | memcpy(flow->vlans, flow_vlans, sizeof flow->vlans); |
33bf9176 | 3876 | flow->nw_tos = flow_nw_tos; |
5dbfe239 ZB |
3877 | flow->dl_dst = flow_dl_dst; |
3878 | flow->dl_src = flow_dl_src; | |
3879 | flow->packet_type = flow_packet_type; | |
3880 | flow->dl_type = flow_dl_type; | |
9583bc14 EJ |
3881 | } |
3882 | ||
3883 | static void | |
e93ef1c7 JR |
3884 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3885 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3886 | { |
e93ef1c7 | 3887 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3888 | } |
3889 | ||
bb61b33d | 3890 | static void |
790c5d26 | 3891 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule, bool deepens) |
bb61b33d BP |
3892 | { |
3893 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3894 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3895 | const struct rule_actions *actions; |
bb61b33d BP |
3896 | |
3897 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3898 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3899 | } |
3900 | ||
98b07853 | 3901 | ctx->resubmits++; |
790c5d26 | 3902 | |
790c5d26 | 3903 | ctx->depth += deepens; |
bb61b33d | 3904 | ctx->rule = rule; |
07a3cd5c BP |
3905 | ctx->rule_cookie = rule->up.flow_cookie; |
3906 | actions = rule_get_actions(&rule->up); | |
6f00e29b | 3907 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); |
8b1e5560 | 3908 | ctx->rule_cookie = old_cookie; |
bb61b33d | 3909 | ctx->rule = old_rule; |
790c5d26 | 3910 | ctx->depth -= deepens; |
bb61b33d BP |
3911 | } |
3912 | ||
bd3240ba SH |
3913 | static bool |
3914 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3915 | { |
790c5d26 | 3916 | if (ctx->depth >= MAX_DEPTH) { |
2d9b49dd | 3917 | xlate_report_error(ctx, "over max translation depth %d", MAX_DEPTH); |
fff1b9c0 | 3918 | ctx->error = XLATE_RECURSION_TOO_DEEP; |
790c5d26 | 3919 | } else if (ctx->resubmits >= MAX_RESUBMITS) { |
2d9b49dd | 3920 | xlate_report_error(ctx, "over %d resubmit actions", MAX_RESUBMITS); |
fff1b9c0 | 3921 | ctx->error = XLATE_TOO_MANY_RESUBMITS; |
1520ef4f | 3922 | } else if (ctx->odp_actions->size > UINT16_MAX) { |
2d9b49dd | 3923 | xlate_report_error(ctx, "resubmits yielded over 64 kB of actions"); |
fff1b9c0 JR |
3924 | /* NOT an error, as we'll be slow-pathing the flow in this case? */ |
3925 | ctx->exit = true; /* XXX: translation still terminated! */ | |
6fd6ed71 | 3926 | } else if (ctx->stack.size >= 65536) { |
2d9b49dd | 3927 | xlate_report_error(ctx, "resubmits yielded over 64 kB of stack"); |
fff1b9c0 | 3928 | ctx->error = XLATE_STACK_TOO_DEEP; |
98b07853 | 3929 | } else { |
bd3240ba SH |
3930 | return true; |
3931 | } | |
3932 | ||
3933 | return false; | |
3934 | } | |
3935 | ||
2cd20955 JR |
3936 | static void |
3937 | tuple_swap_flow(struct flow *flow, bool ipv4) | |
3938 | { | |
3939 | uint8_t nw_proto = flow->nw_proto; | |
3940 | flow->nw_proto = flow->ct_nw_proto; | |
3941 | flow->ct_nw_proto = nw_proto; | |
3942 | ||
3943 | if (ipv4) { | |
3944 | ovs_be32 nw_src = flow->nw_src; | |
3945 | flow->nw_src = flow->ct_nw_src; | |
3946 | flow->ct_nw_src = nw_src; | |
3947 | ||
3948 | ovs_be32 nw_dst = flow->nw_dst; | |
3949 | flow->nw_dst = flow->ct_nw_dst; | |
3950 | flow->ct_nw_dst = nw_dst; | |
3951 | } else { | |
3952 | struct in6_addr ipv6_src = flow->ipv6_src; | |
3953 | flow->ipv6_src = flow->ct_ipv6_src; | |
3954 | flow->ct_ipv6_src = ipv6_src; | |
3955 | ||
3956 | struct in6_addr ipv6_dst = flow->ipv6_dst; | |
3957 | flow->ipv6_dst = flow->ct_ipv6_dst; | |
3958 | flow->ct_ipv6_dst = ipv6_dst; | |
3959 | } | |
3960 | ||
3961 | ovs_be16 tp_src = flow->tp_src; | |
3962 | flow->tp_src = flow->ct_tp_src; | |
3963 | flow->ct_tp_src = tp_src; | |
3964 | ||
3965 | ovs_be16 tp_dst = flow->tp_dst; | |
3966 | flow->tp_dst = flow->ct_tp_dst; | |
3967 | flow->ct_tp_dst = tp_dst; | |
3968 | } | |
3969 | ||
3970 | static void | |
3971 | tuple_swap(struct flow *flow, struct flow_wildcards *wc) | |
3972 | { | |
3973 | bool ipv4 = (flow->dl_type == htons(ETH_TYPE_IP)); | |
3974 | ||
3975 | tuple_swap_flow(flow, ipv4); | |
3976 | tuple_swap_flow(&wc->masks, ipv4); | |
3977 | } | |
3978 | ||
bd3240ba | 3979 | static void |
6d328fa2 | 3980 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2cd20955 JR |
3981 | bool may_packet_in, bool honor_table_miss, |
3982 | bool with_ct_orig) | |
bd3240ba | 3983 | { |
e12ec36b SH |
3984 | /* Check if we need to recirculate before matching in a table. */ |
3985 | if (ctx->was_mpls) { | |
3986 | ctx_trigger_freeze(ctx); | |
3987 | return; | |
3988 | } | |
bd3240ba | 3989 | if (xlate_resubmit_resource_check(ctx)) { |
9583bc14 | 3990 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3991 | struct rule_dpif *rule; |
9583bc14 EJ |
3992 | |
3993 | ctx->table_id = table_id; | |
3994 | ||
2cd20955 JR |
3995 | /* Swap packet fields with CT 5-tuple if requested. */ |
3996 | if (with_ct_orig) { | |
3997 | /* Do not swap if there is no CT tuple, or if key is not IP. */ | |
3998 | if (ctx->xin->flow.ct_nw_proto == 0 || | |
3999 | !is_ip_any(&ctx->xin->flow)) { | |
4000 | xlate_report_error(ctx, | |
4001 | "resubmit(ct) with non-tracked or non-IP packet!"); | |
4002 | return; | |
4003 | } | |
4004 | tuple_swap(&ctx->xin->flow, ctx->wc); | |
4005 | } | |
34dd0d78 | 4006 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
1f4a8933 | 4007 | ctx->xin->tables_version, |
c0e638aa | 4008 | &ctx->xin->flow, ctx->wc, |
34dd0d78 JR |
4009 | ctx->xin->resubmit_stats, |
4010 | &ctx->table_id, in_port, | |
a027899e JR |
4011 | may_packet_in, honor_table_miss, |
4012 | ctx->xin->xcache); | |
2cd20955 JR |
4013 | /* Swap back. */ |
4014 | if (with_ct_orig) { | |
4015 | tuple_swap(&ctx->xin->flow, ctx->wc); | |
4016 | } | |
ad3efdcb | 4017 | |
a2143702 | 4018 | if (rule) { |
83709dfa JR |
4019 | /* Fill in the cache entry here instead of xlate_recursively |
4020 | * to make the reference counting more explicit. We take a | |
4021 | * reference in the lookups above if we are going to cache the | |
4022 | * rule. */ | |
4023 | if (ctx->xin->xcache) { | |
4024 | struct xc_entry *entry; | |
4025 | ||
4026 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
901a517e | 4027 | entry->rule = rule; |
07a3cd5c | 4028 | ofproto_rule_ref(&rule->up); |
83709dfa | 4029 | } |
2d9b49dd BP |
4030 | |
4031 | struct ovs_list *old_trace = ctx->xin->trace; | |
4032 | xlate_report_table(ctx, rule, table_id); | |
790c5d26 | 4033 | xlate_recursively(ctx, rule, table_id <= old_table_id); |
2d9b49dd | 4034 | ctx->xin->trace = old_trace; |
ad3efdcb EJ |
4035 | } |
4036 | ||
9583bc14 | 4037 | ctx->table_id = old_table_id; |
98b07853 | 4038 | return; |
9583bc14 EJ |
4039 | } |
4040 | } | |
4041 | ||
76973237 | 4042 | /* Consumes the group reference, which is only taken if xcache exists. */ |
f4fb341b | 4043 | static void |
1e684d7d RW |
4044 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
4045 | struct ofputil_bucket *bucket) | |
4046 | { | |
4047 | if (ctx->xin->resubmit_stats) { | |
4048 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
4049 | } | |
4050 | if (ctx->xin->xcache) { | |
4051 | struct xc_entry *entry; | |
4052 | ||
4053 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
901a517e JR |
4054 | entry->group.group = group; |
4055 | entry->group.bucket = bucket; | |
1e684d7d RW |
4056 | } |
4057 | } | |
4058 | ||
4059 | static void | |
4060 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
4061 | { |
4062 | uint64_t action_list_stub[1024 / 8]; | |
0a2869d5 BP |
4063 | struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub); |
4064 | struct ofpbuf action_set = ofpbuf_const_initializer(bucket->ofpacts, | |
4065 | bucket->ofpacts_len); | |
5b09e569 | 4066 | struct flow old_flow = ctx->xin->flow; |
e12ec36b | 4067 | bool old_was_mpls = ctx->was_mpls; |
f4fb341b | 4068 | |
f4fb341b | 4069 | ofpacts_execute_action_set(&action_list, &action_set); |
790c5d26 | 4070 | ctx->depth++; |
6fd6ed71 | 4071 | do_xlate_actions(action_list.data, action_list.size, ctx); |
790c5d26 | 4072 | ctx->depth--; |
f4fb341b | 4073 | |
f4fb341b | 4074 | ofpbuf_uninit(&action_list); |
5b09e569 | 4075 | |
77ab5fd2 | 4076 | /* Check if need to freeze. */ |
1d361a81 | 4077 | if (ctx->freezing) { |
77ab5fd2 | 4078 | finish_freezing(ctx); |
e672ff9b JR |
4079 | } |
4080 | ||
5b09e569 JR |
4081 | /* Roll back flow to previous state. |
4082 | * This is equivalent to cloning the packet for each bucket. | |
4083 | * | |
4084 | * As a side effect any subsequently applied actions will | |
4085 | * also effectively be applied to a clone of the packet taken | |
4086 | * just before applying the all or indirect group. | |
4087 | * | |
4088 | * Note that group buckets are action sets, hence they cannot modify the | |
4089 | * main action set. Also any stack actions are ignored when executing an | |
4090 | * action set, so group buckets cannot change the stack either. | |
4091 | * However, we do allow resubmit actions in group buckets, which could | |
4092 | * break the above assumptions. It is up to the controller to not mess up | |
4093 | * with the action_set and stack in the tables resubmitted to from | |
4094 | * group buckets. */ | |
4095 | ctx->xin->flow = old_flow; | |
4096 | ||
e12ec36b SH |
4097 | /* The group bucket popping MPLS should have no effect after bucket |
4098 | * execution. */ | |
4099 | ctx->was_mpls = old_was_mpls; | |
4100 | ||
5b09e569 JR |
4101 | /* The fact that the group bucket exits (for any reason) does not mean that |
4102 | * the translation after the group action should exit. Specifically, if | |
1d361a81 BP |
4103 | * the group bucket freezes translation, the actions after the group action |
4104 | * must continue processing with the original, not the frozen packet! */ | |
5b09e569 | 4105 | ctx->exit = false; |
f4fb341b SH |
4106 | } |
4107 | ||
4108 | static void | |
4109 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
4110 | { | |
1e684d7d | 4111 | struct ofputil_bucket *bucket; |
07a3cd5c | 4112 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
f4fb341b | 4113 | xlate_group_bucket(ctx, bucket); |
f4fb341b | 4114 | } |
1e684d7d | 4115 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
4116 | } |
4117 | ||
dd8cd4b4 SH |
4118 | static void |
4119 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
4120 | { | |
1e684d7d | 4121 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
4122 | |
4123 | bucket = group_first_live_bucket(ctx, group, 0); | |
4124 | if (bucket) { | |
4125 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 4126 | xlate_group_stats(ctx, group, bucket); |
76973237 | 4127 | } else if (ctx->xin->xcache) { |
07a3cd5c | 4128 | ofproto_group_unref(&group->up); |
dd8cd4b4 SH |
4129 | } |
4130 | } | |
4131 | ||
fe7e5749 | 4132 | static void |
7565c3e4 | 4133 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 | 4134 | { |
49a73e0c | 4135 | struct flow_wildcards *wc = ctx->wc; |
1e684d7d | 4136 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
4137 | uint32_t basis; |
4138 | ||
1d1aae0b | 4139 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 4140 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
4141 | bucket = group_best_live_bucket(ctx, group, basis); |
4142 | if (bucket) { | |
fe7e5749 | 4143 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 4144 | xlate_group_stats(ctx, group, bucket); |
76973237 | 4145 | } else if (ctx->xin->xcache) { |
07a3cd5c | 4146 | ofproto_group_unref(&group->up); |
fe7e5749 SH |
4147 | } |
4148 | } | |
4149 | ||
0c4b9393 SH |
4150 | static void |
4151 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
4152 | { | |
07a3cd5c BP |
4153 | const struct field_array *fields = &group->up.props.fields; |
4154 | const uint8_t *mask_values = fields->values; | |
4155 | uint32_t basis = hash_uint64(group->up.props.selection_method_param); | |
0c4b9393 | 4156 | |
07a3cd5c | 4157 | size_t i; |
e8dba719 JR |
4158 | BITMAP_FOR_EACH_1 (i, MFF_N_IDS, fields->used.bm) { |
4159 | const struct mf_field *mf = mf_from_id(i); | |
0c4b9393 | 4160 | |
5bcd4754 | 4161 | /* Skip fields for which prerequisites are not met. */ |
e8dba719 JR |
4162 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow, ctx->wc)) { |
4163 | /* Skip the mask bytes for this field. */ | |
4164 | mask_values += mf->n_bytes; | |
4165 | continue; | |
4166 | } | |
0c4b9393 | 4167 | |
e8dba719 JR |
4168 | union mf_value value; |
4169 | union mf_value mask; | |
0c4b9393 | 4170 | |
e8dba719 JR |
4171 | mf_get_value(mf, &ctx->xin->flow, &value); |
4172 | /* Mask the value. */ | |
4173 | for (int j = 0; j < mf->n_bytes; j++) { | |
4174 | mask.b[j] = *mask_values++; | |
4175 | value.b[j] &= mask.b[j]; | |
4176 | } | |
4177 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
1cb20095 | 4178 | |
e8dba719 JR |
4179 | /* For tunnels, hash in whether the field is present. */ |
4180 | if (mf_is_tun_metadata(mf)) { | |
4181 | basis = hash_boolean(mf_is_set(mf, &ctx->xin->flow), basis); | |
0c4b9393 | 4182 | } |
e8dba719 JR |
4183 | |
4184 | mf_mask_field_masked(mf, &mask, ctx->wc); | |
0c4b9393 SH |
4185 | } |
4186 | ||
07a3cd5c | 4187 | struct ofputil_bucket *bucket = group_best_live_bucket(ctx, group, basis); |
0c4b9393 SH |
4188 | if (bucket) { |
4189 | xlate_group_bucket(ctx, bucket); | |
4190 | xlate_group_stats(ctx, group, bucket); | |
76973237 | 4191 | } else if (ctx->xin->xcache) { |
07a3cd5c | 4192 | ofproto_group_unref(&group->up); |
0c4b9393 SH |
4193 | } |
4194 | } | |
4195 | ||
53cc166a JR |
4196 | static void |
4197 | xlate_dp_hash_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
4198 | { | |
4199 | struct ofputil_bucket *bucket; | |
4200 | ||
4201 | /* dp_hash value 0 is special since it means that the dp_hash has not been | |
4202 | * computed, as all computed dp_hash values are non-zero. Therefore | |
4203 | * compare to zero can be used to decide if the dp_hash value is valid | |
4204 | * without masking the dp_hash field. */ | |
4205 | if (!ctx->xin->flow.dp_hash) { | |
07a3cd5c | 4206 | uint64_t param = group->up.props.selection_method_param; |
53cc166a JR |
4207 | |
4208 | ctx_trigger_recirculate_with_hash(ctx, param >> 32, (uint32_t)param); | |
4209 | } else { | |
07a3cd5c | 4210 | uint32_t n_buckets = group->up.n_buckets; |
53cc166a JR |
4211 | if (n_buckets) { |
4212 | /* Minimal mask to cover the number of buckets. */ | |
4213 | uint32_t mask = (1 << log_2_ceil(n_buckets)) - 1; | |
4214 | /* Multiplier chosen to make the trivial 1 bit case to | |
4215 | * actually distribute amongst two equal weight buckets. */ | |
4216 | uint32_t basis = 0xc2b73583 * (ctx->xin->flow.dp_hash & mask); | |
4217 | ||
4218 | ctx->wc->masks.dp_hash |= mask; | |
4219 | bucket = group_best_live_bucket(ctx, group, basis); | |
4220 | if (bucket) { | |
4221 | xlate_group_bucket(ctx, bucket); | |
4222 | xlate_group_stats(ctx, group, bucket); | |
4223 | } | |
4224 | } | |
4225 | } | |
4226 | } | |
4227 | ||
7565c3e4 SH |
4228 | static void |
4229 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
4230 | { | |
07a3cd5c | 4231 | const char *selection_method = group->up.props.selection_method; |
7565c3e4 | 4232 | |
e12ec36b SH |
4233 | /* Select groups may access flow keys beyond L2 in order to |
4234 | * select a bucket. Recirculate as appropriate to make this possible. | |
4235 | */ | |
4236 | if (ctx->was_mpls) { | |
4237 | ctx_trigger_freeze(ctx); | |
4238 | } | |
4239 | ||
7565c3e4 SH |
4240 | if (selection_method[0] == '\0') { |
4241 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
4242 | } else if (!strcasecmp("hash", selection_method)) { |
4243 | xlate_hash_fields_select_group(ctx, group); | |
53cc166a JR |
4244 | } else if (!strcasecmp("dp_hash", selection_method)) { |
4245 | xlate_dp_hash_select_group(ctx, group); | |
7565c3e4 SH |
4246 | } else { |
4247 | /* Parsing of groups should ensure this never happens */ | |
4248 | OVS_NOT_REACHED(); | |
4249 | } | |
4250 | } | |
4251 | ||
f4fb341b SH |
4252 | static void |
4253 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
4254 | { | |
0eb48fe1 | 4255 | bool was_in_group = ctx->in_group; |
5a070238 BP |
4256 | ctx->in_group = true; |
4257 | ||
07a3cd5c | 4258 | switch (group->up.type) { |
f4fb341b SH |
4259 | case OFPGT11_ALL: |
4260 | case OFPGT11_INDIRECT: | |
4261 | xlate_all_group(ctx, group); | |
4262 | break; | |
4263 | case OFPGT11_SELECT: | |
fe7e5749 | 4264 | xlate_select_group(ctx, group); |
f4fb341b | 4265 | break; |
dd8cd4b4 SH |
4266 | case OFPGT11_FF: |
4267 | xlate_ff_group(ctx, group); | |
4268 | break; | |
f4fb341b | 4269 | default: |
428b2edd | 4270 | OVS_NOT_REACHED(); |
f4fb341b | 4271 | } |
5a070238 | 4272 | |
0eb48fe1 | 4273 | ctx->in_group = was_in_group; |
f4fb341b SH |
4274 | } |
4275 | ||
4276 | static bool | |
4277 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
4278 | { | |
0eb48fe1 | 4279 | if (xlate_resubmit_resource_check(ctx)) { |
f4fb341b | 4280 | struct group_dpif *group; |
f4fb341b | 4281 | |
76973237 JR |
4282 | /* Take ref only if xcache exists. */ |
4283 | group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, | |
1f4a8933 | 4284 | ctx->xin->tables_version, ctx->xin->xcache); |
db88b35c JR |
4285 | if (!group) { |
4286 | /* XXX: Should set ctx->error ? */ | |
2d9b49dd BP |
4287 | xlate_report(ctx, OFT_WARN, "output to nonexistent group %"PRIu32, |
4288 | group_id); | |
f4fb341b SH |
4289 | return true; |
4290 | } | |
db88b35c | 4291 | xlate_group_action__(ctx, group); |
f4fb341b SH |
4292 | } |
4293 | ||
4294 | return false; | |
4295 | } | |
4296 | ||
9583bc14 EJ |
4297 | static void |
4298 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
4299 | const struct ofpact_resubmit *resubmit) | |
4300 | { | |
4e022ec0 | 4301 | ofp_port_t in_port; |
9583bc14 | 4302 | uint8_t table_id; |
adcf00ba AZ |
4303 | bool may_packet_in = false; |
4304 | bool honor_table_miss = false; | |
4305 | ||
4306 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
4307 | /* Still allow missed packets to be sent to the controller | |
4308 | * if resubmitting from an internal table. */ | |
4309 | may_packet_in = true; | |
4310 | honor_table_miss = true; | |
4311 | } | |
9583bc14 EJ |
4312 | |
4313 | in_port = resubmit->in_port; | |
4314 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 4315 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
4316 | } |
4317 | ||
4318 | table_id = resubmit->table_id; | |
4319 | if (table_id == 255) { | |
4320 | table_id = ctx->table_id; | |
4321 | } | |
4322 | ||
adcf00ba | 4323 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2cd20955 | 4324 | honor_table_miss, resubmit->with_ct_orig); |
9583bc14 EJ |
4325 | } |
4326 | ||
4327 | static void | |
4328 | flood_packets(struct xlate_ctx *ctx, bool all) | |
4329 | { | |
46c88433 | 4330 | const struct xport *xport; |
9583bc14 | 4331 | |
46c88433 EJ |
4332 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
4333 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
4334 | continue; |
4335 | } | |
4336 | ||
4337 | if (all) { | |
e93ef1c7 | 4338 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 4339 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 4340 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
4341 | } |
4342 | } | |
4343 | ||
2031ef97 | 4344 | ctx->nf_output_iface = NF_OUT_FLOOD; |
9583bc14 EJ |
4345 | } |
4346 | ||
27d931da AZ |
4347 | /* Copy and reformat a partially xlated odp actions to a new |
4348 | * odp actions list in 'b', so that the new actions list | |
4349 | * can be executed by odp_execute_actions. | |
4350 | * | |
4351 | * When xlate using nested odp actions, such as sample and clone, | |
4352 | * the nested action created by nl_msg_start_nested() may not | |
4353 | * have been properly closed yet, thus can not be executed | |
4354 | * directly. | |
4355 | * | |
4356 | * Since unclosed nested action has to be last action, it can be | |
4357 | * fixed by skipping the outer header, and treating the actions within | |
4358 | * as if they are outside the nested attribute since the effect | |
4359 | * of executing them on packet is the same. | |
4360 | * | |
4361 | * As an optimization, a fully closed 'sample' or 'clone' action | |
4362 | * is skipped since their execution has no effect to the packet. | |
4363 | * | |
4364 | * Returns true if success. 'b' contains the new actions list. | |
4365 | * The caller is responsible for disposing 'b'. | |
4366 | * | |
4367 | * Returns false if error, 'b' has been freed already. */ | |
4368 | static bool | |
4369 | xlate_fixup_actions(struct ofpbuf *b, const struct nlattr *actions, | |
4370 | size_t actions_len) | |
4371 | { | |
4372 | const struct nlattr *a; | |
4373 | unsigned int left; | |
4374 | ||
4375 | NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) { | |
4376 | int type = nl_attr_type(a); | |
4377 | ||
4378 | switch ((enum ovs_action_attr) type) { | |
4379 | case OVS_ACTION_ATTR_HASH: | |
4380 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
4381 | case OVS_ACTION_ATTR_POP_VLAN: | |
4382 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
4383 | case OVS_ACTION_ATTR_POP_MPLS: | |
4384 | case OVS_ACTION_ATTR_SET: | |
4385 | case OVS_ACTION_ATTR_SET_MASKED: | |
4386 | case OVS_ACTION_ATTR_TRUNC: | |
4387 | case OVS_ACTION_ATTR_OUTPUT: | |
4388 | case OVS_ACTION_ATTR_TUNNEL_PUSH: | |
4389 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
4390 | case OVS_ACTION_ATTR_USERSPACE: | |
4391 | case OVS_ACTION_ATTR_RECIRC: | |
4392 | case OVS_ACTION_ATTR_CT: | |
0d11fc52 JR |
4393 | case OVS_ACTION_ATTR_PUSH_ETH: |
4394 | case OVS_ACTION_ATTR_POP_ETH: | |
1fc11c59 JS |
4395 | case OVS_ACTION_ATTR_ENCAP_NSH: |
4396 | case OVS_ACTION_ATTR_DECAP_NSH: | |
5dddf960 | 4397 | case OVS_ACTION_ATTR_METER: |
27d931da AZ |
4398 | ofpbuf_put(b, a, nl_attr_len_pad(a, left)); |
4399 | break; | |
4400 | ||
4401 | case OVS_ACTION_ATTR_CLONE: | |
4402 | /* If the clone action has been fully xlated, it can | |
4403 | * be skipped, since any actions executed within clone | |
4404 | * do not affect the current packet. | |
4405 | * | |
4406 | * When xlating actions within clone, the clone action, | |
4407 | * because it is an nested netlink attribute, do not have | |
4408 | * a valid 'nla_len'; it will be zero instead. Skip | |
4409 | * the clone header to find the start of the actions | |
4410 | * enclosed. Treat those actions as if they are written | |
4411 | * outside of clone. */ | |
4412 | if (!a->nla_len) { | |
4413 | bool ok; | |
4414 | if (left < NLA_HDRLEN) { | |
4415 | goto error; | |
4416 | } | |
4417 | ||
4418 | ok = xlate_fixup_actions(b, nl_attr_get_unspec(a, 0), | |
4419 | left - NLA_HDRLEN); | |
4420 | if (!ok) { | |
4421 | goto error; | |
4422 | } | |
4423 | } | |
4424 | break; | |
4425 | ||
4426 | case OVS_ACTION_ATTR_SAMPLE: | |
4427 | if (!a->nla_len) { | |
4428 | bool ok; | |
4429 | if (left < NLA_HDRLEN) { | |
4430 | goto error; | |
4431 | } | |
4432 | const struct nlattr *attr = nl_attr_get_unspec(a, 0); | |
4433 | left -= NLA_HDRLEN; | |
4434 | ||
4435 | while (left > 0 && | |
4436 | nl_attr_type(attr) != OVS_SAMPLE_ATTR_ACTIONS) { | |
4437 | /* Only OVS_SAMPLE_ATTR_ACTIONS can have unclosed | |
4438 | * nested netlink attribute. */ | |
4439 | if (!attr->nla_len) { | |
4440 | goto error; | |
4441 | } | |
4442 | ||
4443 | left -= NLA_ALIGN(attr->nla_len); | |
4444 | attr = nl_attr_next(attr); | |
4445 | } | |
4446 | ||
4447 | if (left < NLA_HDRLEN) { | |
4448 | goto error; | |
4449 | } | |
4450 | ||
4451 | ok = xlate_fixup_actions(b, nl_attr_get_unspec(attr, 0), | |
4452 | left - NLA_HDRLEN); | |
4453 | if (!ok) { | |
4454 | goto error; | |
4455 | } | |
4456 | } | |
4457 | break; | |
4458 | ||
4459 | case OVS_ACTION_ATTR_UNSPEC: | |
4460 | case __OVS_ACTION_ATTR_MAX: | |
4461 | OVS_NOT_REACHED(); | |
4462 | } | |
4463 | } | |
4464 | ||
4465 | return true; | |
4466 | ||
4467 | error: | |
4468 | ofpbuf_delete(b); | |
4469 | return false; | |
4470 | } | |
4471 | ||
4472 | static bool | |
4473 | xlate_execute_odp_actions(struct dp_packet *packet, | |
4474 | const struct nlattr *actions, int actions_len) | |
4475 | { | |
4476 | struct dp_packet_batch batch; | |
4477 | struct ofpbuf *b = ofpbuf_new(actions_len); | |
4478 | ||
4479 | if (!xlate_fixup_actions(b, actions, actions_len)) { | |
4480 | return false; | |
4481 | } | |
4482 | ||
4483 | dp_packet_batch_init_packet(&batch, packet); | |
4484 | odp_execute_actions(NULL, &batch, false, b->data, b->size, NULL); | |
4485 | ofpbuf_delete(b); | |
4486 | ||
4487 | return true; | |
4488 | } | |
4489 | ||
9583bc14 EJ |
4490 | static void |
4491 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
4492 | enum ofp_packet_in_reason reason, | |
bdcad671 BP |
4493 | uint16_t controller_id, |
4494 | const uint8_t *userdata, size_t userdata_len) | |
9583bc14 | 4495 | { |
e14deea0 | 4496 | struct dp_packet *packet; |
9583bc14 | 4497 | |
04594cd5 | 4498 | ctx->xout->slow |= SLOW_CONTROLLER; |
b476e2f2 | 4499 | xlate_commit_actions(ctx); |
9583bc14 EJ |
4500 | if (!ctx->xin->packet) { |
4501 | return; | |
4502 | } | |
4503 | ||
df70a773 JR |
4504 | if (!ctx->xin->allow_side_effects && !ctx->xin->xcache) { |
4505 | return; | |
4506 | } | |
4507 | ||
cf62fa4c | 4508 | packet = dp_packet_clone(ctx->xin->packet); |
27d931da AZ |
4509 | if (!xlate_execute_odp_actions(packet, ctx->odp_actions->data, |
4510 | ctx->odp_actions->size)) { | |
4511 | xlate_report_error(ctx, "Failed to execute controller action"); | |
4512 | dp_packet_delete(packet); | |
4513 | return; | |
4514 | } | |
beb75a40 | 4515 | |
9bfe9334 BP |
4516 | /* A packet sent by an action in a table-miss rule is considered an |
4517 | * explicit table miss. OpenFlow before 1.3 doesn't have that concept so | |
4518 | * it will get translated back to OFPR_ACTION for those versions. */ | |
4519 | if (reason == OFPR_ACTION | |
07a3cd5c | 4520 | && ctx->rule && rule_is_table_miss(&ctx->rule->up)) { |
9bfe9334 BP |
4521 | reason = OFPR_EXPLICIT_MISS; |
4522 | } | |
4523 | ||
4524 | size_t packet_len = dp_packet_size(packet); | |
0fb7792a | 4525 | |
a2b53dec BP |
4526 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
4527 | *am = (struct ofproto_async_msg) { | |
9bfe9334 | 4528 | .controller_id = controller_id, |
a2b53dec BP |
4529 | .oam = OAM_PACKET_IN, |
4530 | .pin = { | |
4531 | .up = { | |
4d617a87 | 4532 | .base = { |
77ab5fd2 BP |
4533 | .packet = dp_packet_steal_data(packet), |
4534 | .packet_len = packet_len, | |
4535 | .reason = reason, | |
4536 | .table_id = ctx->table_id, | |
4537 | .cookie = ctx->rule_cookie, | |
4538 | .userdata = (userdata_len | |
4539 | ? xmemdup(userdata, userdata_len) | |
4540 | : NULL), | |
4541 | .userdata_len = userdata_len, | |
4542 | } | |
a2b53dec BP |
4543 | }, |
4544 | .max_len = len, | |
9bfe9334 | 4545 | }, |
9bfe9334 | 4546 | }; |
4d617a87 | 4547 | flow_get_metadata(&ctx->xin->flow, &am->pin.up.base.flow_metadata); |
9583bc14 | 4548 | |
df70a773 JR |
4549 | /* Async messages are only sent once, so if we send one now, no |
4550 | * xlate cache entry is created. */ | |
4551 | if (ctx->xin->allow_side_effects) { | |
4552 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); | |
4553 | } else /* xcache */ { | |
4554 | struct xc_entry *entry; | |
4555 | ||
4556 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_CONTROLLER); | |
4557 | entry->controller.ofproto = ctx->xbridge->ofproto; | |
4558 | entry->controller.am = am; | |
4559 | } | |
3b4fff43 RM |
4560 | |
4561 | dp_packet_delete(packet); | |
9583bc14 EJ |
4562 | } |
4563 | ||
7bbdd84f | 4564 | static void |
77ab5fd2 | 4565 | emit_continuation(struct xlate_ctx *ctx, const struct frozen_state *state) |
7bbdd84f | 4566 | { |
df70a773 JR |
4567 | if (!ctx->xin->allow_side_effects && !ctx->xin->xcache) { |
4568 | return; | |
4569 | } | |
4570 | ||
77ab5fd2 BP |
4571 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
4572 | *am = (struct ofproto_async_msg) { | |
4573 | .controller_id = ctx->pause->controller_id, | |
4574 | .oam = OAM_PACKET_IN, | |
4575 | .pin = { | |
4576 | .up = { | |
4d617a87 | 4577 | .base = { |
77ab5fd2 BP |
4578 | .userdata = xmemdup(ctx->pause->userdata, |
4579 | ctx->pause->userdata_len), | |
4580 | .userdata_len = ctx->pause->userdata_len, | |
4581 | .packet = xmemdup(dp_packet_data(ctx->xin->packet), | |
4582 | dp_packet_size(ctx->xin->packet)), | |
4583 | .packet_len = dp_packet_size(ctx->xin->packet), | |
0b024e49 | 4584 | .reason = ctx->pause->reason, |
77ab5fd2 | 4585 | }, |
07a3cd5c | 4586 | .bridge = ctx->xbridge->ofproto->uuid, |
84cf3c1f JR |
4587 | .stack = xmemdup(state->stack, state->stack_size), |
4588 | .stack_size = state->stack_size, | |
77ab5fd2 BP |
4589 | .mirrors = state->mirrors, |
4590 | .conntracked = state->conntracked, | |
4591 | .actions = xmemdup(state->ofpacts, state->ofpacts_len), | |
4592 | .actions_len = state->ofpacts_len, | |
4593 | .action_set = xmemdup(state->action_set, | |
4594 | state->action_set_len), | |
4595 | .action_set_len = state->action_set_len, | |
4596 | }, | |
4597 | .max_len = UINT16_MAX, | |
4598 | }, | |
4599 | }; | |
4d617a87 | 4600 | flow_get_metadata(ctx->paused_flow, &am->pin.up.base.flow_metadata); |
df70a773 JR |
4601 | |
4602 | /* Async messages are only sent once, so if we send one now, no | |
4603 | * xlate cache entry is created. */ | |
4604 | if (ctx->xin->allow_side_effects) { | |
4605 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); | |
4606 | } else /* xcache */ { | |
4607 | struct xc_entry *entry; | |
4608 | ||
4609 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_CONTROLLER); | |
4610 | entry->controller.ofproto = ctx->xbridge->ofproto; | |
4611 | entry->controller.am = am; | |
4612 | } | |
77ab5fd2 | 4613 | } |
7bbdd84f | 4614 | |
e6bc8e74 YHW |
4615 | /* Creates a frozen state, and allocates a unique recirc id for the given |
4616 | * state. Returns a non-zero recirc id if it is allocated successfully. | |
4617 | * Returns 0 otherwise. | |
4618 | **/ | |
4619 | static uint32_t | |
77ab5fd2 BP |
4620 | finish_freezing__(struct xlate_ctx *ctx, uint8_t table) |
4621 | { | |
e6bc8e74 | 4622 | uint32_t id = 0; |
1d361a81 | 4623 | ovs_assert(ctx->freezing); |
7bbdd84f | 4624 | |
1d361a81 | 4625 | struct frozen_state state = { |
07659514 | 4626 | .table_id = table, |
07a3cd5c | 4627 | .ofproto_uuid = ctx->xbridge->ofproto->uuid, |
5c1b2314 | 4628 | .stack = ctx->stack.data, |
84cf3c1f | 4629 | .stack_size = ctx->stack.size, |
29bae541 | 4630 | .mirrors = ctx->mirrors, |
07659514 | 4631 | .conntracked = ctx->conntracked, |
1d361a81 BP |
4632 | .ofpacts = ctx->frozen_actions.data, |
4633 | .ofpacts_len = ctx->frozen_actions.size, | |
417509fa | 4634 | .action_set = ctx->action_set.data, |
8a5fb3b4 | 4635 | .action_set_len = ctx->action_set.size, |
2082425c | 4636 | }; |
77ab5fd2 | 4637 | frozen_metadata_from_flow(&state.metadata, &ctx->xin->flow); |
2082425c | 4638 | |
77ab5fd2 BP |
4639 | if (ctx->pause) { |
4640 | if (ctx->xin->packet) { | |
4641 | emit_continuation(ctx, &state); | |
4642 | } | |
4643 | } else { | |
4644 | /* Allocate a unique recirc id for the given metadata state in the | |
4645 | * flow. An existing id, with a new reference to the corresponding | |
4646 | * recirculation context, will be returned if possible. | |
4647 | * The life-cycle of this recirc id is managed by associating it | |
4648 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
e6bc8e74 | 4649 | id = recirc_alloc_id_ctx(&state); |
77ab5fd2 | 4650 | if (!id) { |
2d9b49dd | 4651 | xlate_report_error(ctx, "Failed to allocate recirculation id"); |
77ab5fd2 | 4652 | ctx->error = XLATE_NO_RECIRCULATION_CONTEXT; |
e6bc8e74 | 4653 | return 0; |
77ab5fd2 BP |
4654 | } |
4655 | recirc_refs_add(&ctx->xout->recircs, id); | |
7bbdd84f | 4656 | |
53cc166a JR |
4657 | if (ctx->recirc_update_dp_hash) { |
4658 | struct ovs_action_hash *act_hash; | |
4659 | ||
4660 | /* Hash action. */ | |
4661 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
4662 | OVS_ACTION_ATTR_HASH, | |
4663 | sizeof *act_hash); | |
4664 | act_hash->hash_alg = OVS_HASH_ALG_L4; /* Make configurable. */ | |
4665 | act_hash->hash_basis = 0; /* Make configurable. */ | |
4666 | } | |
77ab5fd2 BP |
4667 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
4668 | } | |
e672ff9b | 4669 | |
1d361a81 BP |
4670 | /* Undo changes done by freezing. */ |
4671 | ctx_cancel_freeze(ctx); | |
e6bc8e74 | 4672 | return id; |
7bbdd84f SH |
4673 | } |
4674 | ||
1d361a81 | 4675 | /* Called only when we're freezing. */ |
07659514 | 4676 | static void |
77ab5fd2 | 4677 | finish_freezing(struct xlate_ctx *ctx) |
07659514 JS |
4678 | { |
4679 | xlate_commit_actions(ctx); | |
77ab5fd2 | 4680 | finish_freezing__(ctx, 0); |
07659514 JS |
4681 | } |
4682 | ||
e37b8437 JS |
4683 | /* Fork the pipeline here. The current packet will continue processing the |
4684 | * current action list. A clone of the current packet will recirculate, skip | |
4685 | * the remainder of the current action list and asynchronously resume pipeline | |
4686 | * processing in 'table' with the current metadata and action set. */ | |
4687 | static void | |
4688 | compose_recirculate_and_fork(struct xlate_ctx *ctx, uint8_t table) | |
4689 | { | |
e6bc8e74 | 4690 | uint32_t recirc_id; |
1d361a81 | 4691 | ctx->freezing = true; |
e6bc8e74 YHW |
4692 | recirc_id = finish_freezing__(ctx, table); |
4693 | ||
4694 | if (OVS_UNLIKELY(ctx->xin->trace) && recirc_id) { | |
4695 | if (oftrace_add_recirc_node(ctx->xin->recirc_queue, | |
4696 | OFT_RECIRC_CONNTRACK, &ctx->xin->flow, | |
4697 | ctx->xin->packet, recirc_id)) { | |
4698 | xlate_report(ctx, OFT_DETAIL, "A clone of the packet is forked to " | |
4699 | "recirculate. The forked pipeline will be resumed at " | |
4700 | "table %u.", table); | |
4701 | } else { | |
4702 | xlate_report(ctx, OFT_DETAIL, "Failed to trace the conntrack " | |
4703 | "forked pipeline with recirc_id = %d.", recirc_id); | |
4704 | } | |
4705 | } | |
e37b8437 JS |
4706 | } |
4707 | ||
8bfd0fda BP |
4708 | static void |
4709 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 4710 | { |
33bf9176 | 4711 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 4712 | int n; |
33bf9176 | 4713 | |
8bfd0fda | 4714 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 4715 | |
49a73e0c | 4716 | n = flow_count_mpls_labels(flow, ctx->wc); |
8bfd0fda | 4717 | if (!n) { |
704bb0bf | 4718 | xlate_commit_actions(ctx); |
8bfd0fda BP |
4719 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
4720 | if (ctx->xin->packet != NULL) { | |
2d9b49dd BP |
4721 | xlate_report_error(ctx, "dropping packet on which an MPLS push " |
4722 | "action can't be performed as it would have " | |
4723 | "more MPLS LSEs than the %d supported.", | |
4724 | FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 4725 | } |
fff1b9c0 | 4726 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
8bfd0fda | 4727 | return; |
9583bc14 | 4728 | } |
b0a17866 | 4729 | |
742c0ac3 JR |
4730 | /* Update flow's MPLS stack, and clear L3/4 fields to mark them invalid. */ |
4731 | flow_push_mpls(flow, n, mpls->ethertype, ctx->wc, true); | |
9583bc14 EJ |
4732 | } |
4733 | ||
8bfd0fda | 4734 | static void |
9cfef3d0 | 4735 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 4736 | { |
8bfd0fda | 4737 | struct flow *flow = &ctx->xin->flow; |
49a73e0c | 4738 | int n = flow_count_mpls_labels(flow, ctx->wc); |
33bf9176 | 4739 | |
49a73e0c | 4740 | if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) { |
8bf009bf | 4741 | if (!eth_type_mpls(eth_type) && ctx->xbridge->support.odp.recirc) { |
e12ec36b | 4742 | ctx->was_mpls = true; |
7bbdd84f SH |
4743 | } |
4744 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda | 4745 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
4746 | xlate_report_error(ctx, "dropping packet on which an " |
4747 | "MPLS pop action can't be performed as it has " | |
4748 | "more MPLS LSEs than the %d supported.", | |
4749 | FLOW_MAX_MPLS_LABELS); | |
8bfd0fda | 4750 | } |
fff1b9c0 | 4751 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
1520ef4f | 4752 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
4753 | } |
4754 | } | |
4755 | ||
4756 | static bool | |
4757 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
4758 | { | |
33bf9176 BP |
4759 | struct flow *flow = &ctx->xin->flow; |
4760 | ||
4761 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
4762 | return false; |
4763 | } | |
4764 | ||
49a73e0c | 4765 | ctx->wc->masks.nw_ttl = 0xff; |
33bf9176 BP |
4766 | if (flow->nw_ttl > 1) { |
4767 | flow->nw_ttl--; | |
9583bc14 EJ |
4768 | return false; |
4769 | } else { | |
4770 | size_t i; | |
4771 | ||
4772 | for (i = 0; i < ids->n_controllers; i++) { | |
4773 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
bdcad671 | 4774 | ids->cnt_ids[i], NULL, 0); |
9583bc14 EJ |
4775 | } |
4776 | ||
4777 | /* Stop processing for current table. */ | |
2d9b49dd BP |
4778 | xlate_report(ctx, OFT_WARN, "IPv%d decrement TTL exception", |
4779 | flow->dl_type == htons(ETH_TYPE_IP) ? 4 : 6); | |
9583bc14 EJ |
4780 | return true; |
4781 | } | |
4782 | } | |
4783 | ||
8bfd0fda | 4784 | static void |
097d4939 JR |
4785 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
4786 | { | |
8bfd0fda | 4787 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4788 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); |
8bfd0fda | 4789 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); |
097d4939 | 4790 | } |
097d4939 JR |
4791 | } |
4792 | ||
8bfd0fda | 4793 | static void |
097d4939 JR |
4794 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
4795 | { | |
8bfd0fda | 4796 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4797 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); |
8bfd0fda | 4798 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); |
097d4939 | 4799 | } |
097d4939 JR |
4800 | } |
4801 | ||
8bfd0fda | 4802 | static void |
9cfef3d0 | 4803 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 4804 | { |
8bfd0fda | 4805 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4806 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda | 4807 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); |
b0a17866 | 4808 | } |
9583bc14 EJ |
4809 | } |
4810 | ||
4811 | static bool | |
9cfef3d0 | 4812 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 4813 | { |
33bf9176 | 4814 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a | 4815 | |
8bfd0fda | 4816 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
4817 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
4818 | ||
49a73e0c | 4819 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda BP |
4820 | if (ttl > 1) { |
4821 | ttl--; | |
4822 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
4823 | return false; | |
4824 | } else { | |
bdcad671 BP |
4825 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0, |
4826 | NULL, 0); | |
8bfd0fda | 4827 | } |
9583bc14 | 4828 | } |
22d38fca JR |
4829 | |
4830 | /* Stop processing for current table. */ | |
2d9b49dd | 4831 | xlate_report(ctx, OFT_WARN, "MPLS decrement TTL exception"); |
22d38fca | 4832 | return true; |
9583bc14 EJ |
4833 | } |
4834 | ||
4835 | static void | |
4836 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 4837 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 4838 | { |
2031ef97 | 4839 | ofp_port_t prev_nf_output_iface = ctx->nf_output_iface; |
9583bc14 | 4840 | |
2031ef97 | 4841 | ctx->nf_output_iface = NF_OUT_DROP; |
9583bc14 EJ |
4842 | |
4843 | switch (port) { | |
4844 | case OFPP_IN_PORT: | |
e93ef1c7 | 4845 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
4846 | break; |
4847 | case OFPP_TABLE: | |
4e022ec0 | 4848 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2cd20955 | 4849 | 0, may_packet_in, true, false); |
9583bc14 EJ |
4850 | break; |
4851 | case OFPP_NORMAL: | |
4852 | xlate_normal(ctx); | |
4853 | break; | |
4854 | case OFPP_FLOOD: | |
4855 | flood_packets(ctx, false); | |
4856 | break; | |
4857 | case OFPP_ALL: | |
4858 | flood_packets(ctx, true); | |
4859 | break; | |
4860 | case OFPP_CONTROLLER: | |
3a11fd5b | 4861 | execute_controller_action(ctx, max_len, |
331c07ac YHW |
4862 | (ctx->in_packet_out ? OFPR_PACKET_OUT |
4863 | : ctx->in_group ? OFPR_GROUP | |
029ca940 SS |
4864 | : ctx->in_action_set ? OFPR_ACTION_SET |
4865 | : OFPR_ACTION), | |
bdcad671 | 4866 | 0, NULL, 0); |
9583bc14 EJ |
4867 | break; |
4868 | case OFPP_NONE: | |
4869 | break; | |
4870 | case OFPP_LOCAL: | |
4871 | default: | |
4e022ec0 | 4872 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 4873 | compose_output_action(ctx, port, NULL); |
9583bc14 | 4874 | } else { |
2d9b49dd | 4875 | xlate_report(ctx, OFT_WARN, "skipping output to input port"); |
9583bc14 EJ |
4876 | } |
4877 | break; | |
4878 | } | |
4879 | ||
4880 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2031ef97 BP |
4881 | ctx->nf_output_iface = NF_OUT_FLOOD; |
4882 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
4883 | ctx->nf_output_iface = prev_nf_output_iface; | |
9583bc14 | 4884 | } else if (prev_nf_output_iface != NF_OUT_DROP && |
2031ef97 BP |
4885 | ctx->nf_output_iface != NF_OUT_FLOOD) { |
4886 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
4887 | } |
4888 | } | |
4889 | ||
4890 | static void | |
4891 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
4892 | const struct ofpact_output_reg *or) | |
4893 | { | |
4894 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
4895 | if (port <= UINT16_MAX) { | |
2d9b49dd BP |
4896 | xlate_report(ctx, OFT_DETAIL, "output port is %"PRIu64, port); |
4897 | ||
9583bc14 EJ |
4898 | union mf_subvalue value; |
4899 | ||
4900 | memset(&value, 0xff, sizeof value); | |
49a73e0c | 4901 | mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks); |
2d9b49dd BP |
4902 | xlate_output_action(ctx, u16_to_ofp(port), or->max_len, false); |
4903 | } else { | |
4904 | xlate_report(ctx, OFT_WARN, "output port %"PRIu64" is out of range", | |
4905 | port); | |
9583bc14 EJ |
4906 | } |
4907 | } | |
4908 | ||
aaca4fe0 WT |
4909 | static void |
4910 | xlate_output_trunc_action(struct xlate_ctx *ctx, | |
4911 | ofp_port_t port, uint32_t max_len) | |
4912 | { | |
4913 | bool support_trunc = ctx->xbridge->support.trunc; | |
4914 | struct ovs_action_trunc *trunc; | |
2f2b904f | 4915 | char name[OFP10_MAX_PORT_NAME_LEN]; |
aaca4fe0 WT |
4916 | |
4917 | switch (port) { | |
4918 | case OFPP_TABLE: | |
4919 | case OFPP_NORMAL: | |
4920 | case OFPP_FLOOD: | |
4921 | case OFPP_ALL: | |
4922 | case OFPP_CONTROLLER: | |
4923 | case OFPP_NONE: | |
50f96b10 | 4924 | ofputil_port_to_string(port, NULL, name, sizeof name); |
2d9b49dd BP |
4925 | xlate_report(ctx, OFT_WARN, |
4926 | "output_trunc does not support port: %s", name); | |
aaca4fe0 WT |
4927 | break; |
4928 | case OFPP_LOCAL: | |
4929 | case OFPP_IN_PORT: | |
4930 | default: | |
4931 | if (port != ctx->xin->flow.in_port.ofp_port) { | |
4932 | const struct xport *xport = get_ofp_port(ctx->xbridge, port); | |
4933 | ||
4934 | if (xport == NULL || xport->odp_port == ODPP_NONE) { | |
4935 | /* Since truncate happens at its following output action, if | |
4936 | * the output port is a patch port, the behavior is somehow | |
49f17344 | 4937 | * unpredictable. For simplicity, disallow this case. */ |
50f96b10 | 4938 | ofputil_port_to_string(port, NULL, name, sizeof name); |
2d9b49dd BP |
4939 | xlate_report_error(ctx, "output_trunc does not support " |
4940 | "patch port %s", name); | |
aaca4fe0 WT |
4941 | break; |
4942 | } | |
4943 | ||
4944 | trunc = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
4945 | OVS_ACTION_ATTR_TRUNC, | |
4946 | sizeof *trunc); | |
4947 | trunc->max_len = max_len; | |
4948 | xlate_output_action(ctx, port, max_len, false); | |
4949 | if (!support_trunc) { | |
4950 | ctx->xout->slow |= SLOW_ACTION; | |
4951 | } | |
4952 | } else { | |
2d9b49dd | 4953 | xlate_report(ctx, OFT_WARN, "skipping output to input port"); |
aaca4fe0 WT |
4954 | } |
4955 | break; | |
4956 | } | |
4957 | } | |
4958 | ||
9583bc14 EJ |
4959 | static void |
4960 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
4961 | const struct ofpact_enqueue *enqueue) | |
4962 | { | |
4e022ec0 | 4963 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
4964 | uint32_t queue_id = enqueue->queue; |
4965 | uint32_t flow_priority, priority; | |
4966 | int error; | |
4967 | ||
4968 | /* Translate queue to priority. */ | |
89a8a7f0 | 4969 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
4970 | if (error) { |
4971 | /* Fall back to ordinary output action. */ | |
4972 | xlate_output_action(ctx, enqueue->port, 0, false); | |
4973 | return; | |
4974 | } | |
4975 | ||
4976 | /* Check output port. */ | |
4977 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
4978 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
4979 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
4980 | return; |
4981 | } | |
4982 | ||
4983 | /* Add datapath actions. */ | |
4984 | flow_priority = ctx->xin->flow.skb_priority; | |
4985 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 4986 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
4987 | ctx->xin->flow.skb_priority = flow_priority; |
4988 | ||
4989 | /* Update NetFlow output port. */ | |
2031ef97 BP |
4990 | if (ctx->nf_output_iface == NF_OUT_DROP) { |
4991 | ctx->nf_output_iface = ofp_port; | |
4992 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { | |
4993 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
4994 | } |
4995 | } | |
4996 | ||
4997 | static void | |
4998 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
4999 | { | |
5000 | uint32_t skb_priority; | |
5001 | ||
89a8a7f0 | 5002 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
5003 | ctx->xin->flow.skb_priority = skb_priority; |
5004 | } else { | |
5005 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
5006 | * has already been logged. */ | |
5007 | } | |
5008 | } | |
5009 | ||
5010 | static bool | |
46c88433 | 5011 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 5012 | { |
46c88433 EJ |
5013 | const struct xbridge *xbridge = xbridge_; |
5014 | struct xport *port; | |
9583bc14 EJ |
5015 | |
5016 | switch (ofp_port) { | |
5017 | case OFPP_IN_PORT: | |
5018 | case OFPP_TABLE: | |
5019 | case OFPP_NORMAL: | |
5020 | case OFPP_FLOOD: | |
5021 | case OFPP_ALL: | |
5022 | case OFPP_NONE: | |
5023 | return true; | |
5024 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
5025 | return false; | |
5026 | default: | |
46c88433 | 5027 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
5028 | return port ? port->may_enable : false; |
5029 | } | |
5030 | } | |
5031 | ||
5032 | static void | |
5033 | xlate_bundle_action(struct xlate_ctx *ctx, | |
5034 | const struct ofpact_bundle *bundle) | |
5035 | { | |
4e022ec0 | 5036 | ofp_port_t port; |
9583bc14 | 5037 | |
49a73e0c | 5038 | port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb, |
46c88433 | 5039 | CONST_CAST(struct xbridge *, ctx->xbridge)); |
9583bc14 | 5040 | if (bundle->dst.field) { |
49a73e0c | 5041 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc); |
2d9b49dd | 5042 | xlate_report_subfield(ctx, &bundle->dst); |
9583bc14 EJ |
5043 | } else { |
5044 | xlate_output_action(ctx, port, 0, false); | |
5045 | } | |
5046 | } | |
5047 | ||
4165b5e0 JS |
5048 | static void |
5049 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
5050 | { | |
49a73e0c | 5051 | learn_mask(learn, ctx->wc); |
9583bc14 | 5052 | |
df70a773 | 5053 | if (ctx->xin->xcache || ctx->xin->allow_side_effects) { |
4165b5e0 JS |
5054 | uint64_t ofpacts_stub[1024 / 8]; |
5055 | struct ofputil_flow_mod fm; | |
2c7ee524 | 5056 | struct ofproto_flow_mod ofm__, *ofm; |
4165b5e0 | 5057 | struct ofpbuf ofpacts; |
2c7ee524 JR |
5058 | enum ofperr error; |
5059 | ||
5060 | if (ctx->xin->xcache) { | |
3f3b97b0 | 5061 | ofm = xmalloc(sizeof *ofm); |
2c7ee524 JR |
5062 | } else { |
5063 | ofm = &ofm__; | |
5064 | } | |
4165b5e0 JS |
5065 | |
5066 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
2c7ee524 | 5067 | learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts); |
2d9b49dd BP |
5068 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
5069 | struct ds s = DS_EMPTY_INITIALIZER; | |
5070 | ds_put_format(&s, "table=%"PRIu8" ", fm.table_id); | |
50f96b10 | 5071 | match_format(&fm.match, NULL, &s, OFP_DEFAULT_PRIORITY); |
2d9b49dd BP |
5072 | ds_chomp(&s, ' '); |
5073 | ds_put_format(&s, " priority=%d", fm.priority); | |
5074 | if (fm.new_cookie) { | |
5075 | ds_put_format(&s, " cookie=%#"PRIx64, ntohll(fm.new_cookie)); | |
5076 | } | |
5077 | if (fm.idle_timeout != OFP_FLOW_PERMANENT) { | |
5078 | ds_put_format(&s, " idle=%"PRIu16, fm.idle_timeout); | |
5079 | } | |
5080 | if (fm.hard_timeout != OFP_FLOW_PERMANENT) { | |
5081 | ds_put_format(&s, " hard=%"PRIu16, fm.hard_timeout); | |
5082 | } | |
5083 | if (fm.flags & NX_LEARN_F_SEND_FLOW_REM) { | |
5084 | ds_put_cstr(&s, " send_flow_rem"); | |
5085 | } | |
5086 | ds_put_cstr(&s, " actions="); | |
50f96b10 | 5087 | ofpacts_format(fm.ofpacts, fm.ofpacts_len, NULL, &s); |
2d9b49dd BP |
5088 | xlate_report(ctx, OFT_DETAIL, "%s", ds_cstr(&s)); |
5089 | ds_destroy(&s); | |
5090 | } | |
2c7ee524 JR |
5091 | error = ofproto_dpif_flow_mod_init_for_learn(ctx->xbridge->ofproto, |
5092 | &fm, ofm); | |
4165b5e0 | 5093 | ofpbuf_uninit(&ofpacts); |
2c7ee524 | 5094 | |
3f3b97b0 | 5095 | if (!error) { |
4c71600d | 5096 | bool success = true; |
3f3b97b0 | 5097 | if (ctx->xin->allow_side_effects) { |
4c71600d DDP |
5098 | error = ofproto_flow_mod_learn(ofm, ctx->xin->xcache != NULL, |
5099 | learn->limit, &success); | |
5100 | } else if (learn->limit) { | |
5101 | if (!ofm->temp_rule | |
5102 | || ofm->temp_rule->state != RULE_INSERTED) { | |
5103 | /* The learned rule expired and there are no packets, so | |
5104 | * we cannot learn again. Since the translated actions | |
5105 | * depend on the result of learning, we tell the caller | |
5106 | * that there's no point in caching this result. */ | |
5107 | ctx->xout->avoid_caching = true; | |
5108 | } | |
3f3b97b0 DDP |
5109 | } |
5110 | ||
4c71600d DDP |
5111 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
5112 | nxm_reg_load(&learn->result_dst, success ? 1 : 0, | |
5113 | &ctx->xin->flow, ctx->wc); | |
5114 | xlate_report_subfield(ctx, &learn->result_dst); | |
5115 | } | |
5116 | ||
5117 | if (success && ctx->xin->xcache) { | |
3f3b97b0 DDP |
5118 | struct xc_entry *entry; |
5119 | ||
5120 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
5121 | entry->learn.ofm = ofm; | |
4c71600d | 5122 | entry->learn.limit = learn->limit; |
3f3b97b0 DDP |
5123 | ofm = NULL; |
5124 | } | |
4c71600d DDP |
5125 | |
5126 | if (OVS_UNLIKELY(ctx->xin->trace && !success)) { | |
5127 | xlate_report(ctx, OFT_DETAIL, "Limit exceeded, learn failed"); | |
5128 | } | |
3f3b97b0 DDP |
5129 | } |
5130 | ||
5131 | if (ctx->xin->xcache) { | |
5132 | free(ofm); | |
2c7ee524 JR |
5133 | } |
5134 | ||
5135 | if (error) { | |
2d9b49dd BP |
5136 | xlate_report_error(ctx, "LEARN action execution failed (%s).", |
5137 | ofperr_to_string(error)); | |
2c7ee524 | 5138 | } |
2d9b49dd BP |
5139 | } else { |
5140 | xlate_report(ctx, OFT_WARN, | |
5141 | "suppressing side effects, so learn action ignored"); | |
b256dc52 JS |
5142 | } |
5143 | } | |
5144 | ||
5145 | static void | |
5146 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
5147 | uint16_t idle_timeout, uint16_t hard_timeout) | |
5148 | { | |
5149 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
07a3cd5c | 5150 | ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout); |
b256dc52 | 5151 | } |
9583bc14 EJ |
5152 | } |
5153 | ||
9583bc14 EJ |
5154 | static void |
5155 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
5156 | const struct ofpact_fin_timeout *oft) | |
5157 | { | |
b256dc52 | 5158 | if (ctx->rule) { |
df70a773 JR |
5159 | if (ctx->xin->allow_side_effects) { |
5160 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
5161 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
5162 | } | |
b256dc52 JS |
5163 | if (ctx->xin->xcache) { |
5164 | struct xc_entry *entry; | |
5165 | ||
5166 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
5167 | /* XC_RULE already holds a reference on the rule, none is taken |
5168 | * here. */ | |
901a517e JR |
5169 | entry->fin.rule = ctx->rule; |
5170 | entry->fin.idle = oft->fin_idle_timeout; | |
5171 | entry->fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 5172 | } |
9583bc14 EJ |
5173 | } |
5174 | } | |
5175 | ||
5176 | static void | |
5177 | xlate_sample_action(struct xlate_ctx *ctx, | |
5178 | const struct ofpact_sample *os) | |
5179 | { | |
f69f713b BY |
5180 | odp_port_t output_odp_port = ODPP_NONE; |
5181 | odp_port_t tunnel_out_port = ODPP_NONE; | |
5182 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; | |
5183 | bool emit_set_tunnel = false; | |
5184 | ||
5185 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
5186 | return; | |
5187 | } | |
5188 | ||
e824d78d JR |
5189 | /* Scale the probability from 16-bit to 32-bit while representing |
5190 | * the same percentage. */ | |
5191 | uint32_t probability = (os->probability << 16) | os->probability; | |
5192 | ||
b440dd8c | 5193 | if (!ctx->xbridge->support.variable_length_userdata) { |
2d9b49dd BP |
5194 | xlate_report_error(ctx, "ignoring NXAST_SAMPLE action because " |
5195 | "datapath lacks support (needs Linux 3.10+ or " | |
5196 | "kernel module from OVS 1.11+)"); | |
e824d78d JR |
5197 | return; |
5198 | } | |
5199 | ||
f69f713b BY |
5200 | /* If ofp_port in flow sample action is equel to ofp_port, |
5201 | * this sample action is a input port action. */ | |
5202 | if (os->sampling_port != OFPP_NONE && | |
5203 | os->sampling_port != ctx->xin->flow.in_port.ofp_port) { | |
5204 | output_odp_port = ofp_port_to_odp_port(ctx->xbridge, | |
5205 | os->sampling_port); | |
5206 | if (output_odp_port == ODPP_NONE) { | |
2d9b49dd BP |
5207 | xlate_report_error(ctx, "can't use unknown port %d in flow sample " |
5208 | "action", os->sampling_port); | |
f69f713b BY |
5209 | return; |
5210 | } | |
5211 | ||
5212 | if (dpif_ipfix_get_flow_exporter_tunnel_sampling(ipfix, | |
5213 | os->collector_set_id) | |
5214 | && dpif_ipfix_get_tunnel_port(ipfix, output_odp_port)) { | |
5215 | tunnel_out_port = output_odp_port; | |
5216 | emit_set_tunnel = true; | |
5217 | } | |
5218 | } | |
5219 | ||
5220 | xlate_commit_actions(ctx); | |
5221 | /* If 'emit_set_tunnel', sample(sampling_port=1) would translate | |
5222 | * into datapath sample action set(tunnel(...)), sample(...) and | |
5223 | * it is used for sampling egress tunnel information. */ | |
5224 | if (emit_set_tunnel) { | |
5225 | const struct xport *xport = get_ofp_port(ctx->xbridge, | |
5226 | os->sampling_port); | |
5227 | ||
5228 | if (xport && xport->is_tunnel) { | |
5229 | struct flow *flow = &ctx->xin->flow; | |
5230 | tnl_port_send(xport->ofport, flow, ctx->wc); | |
5231 | if (!ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
5232 | struct flow_tnl flow_tnl = flow->tunnel; | |
5233 | ||
5234 | commit_odp_tunnel_action(flow, &ctx->base_flow, | |
5235 | ctx->odp_actions); | |
5236 | flow->tunnel = flow_tnl; | |
5237 | } | |
5238 | } else { | |
2d9b49dd BP |
5239 | xlate_report_error(ctx, |
5240 | "sampling_port:%d should be a tunnel port.", | |
5241 | os->sampling_port); | |
f69f713b BY |
5242 | } |
5243 | } | |
e824d78d | 5244 | |
a6092018 BP |
5245 | union user_action_cookie cookie = { |
5246 | .flow_sample = { | |
5247 | .type = USER_ACTION_COOKIE_FLOW_SAMPLE, | |
5248 | .probability = os->probability, | |
5249 | .collector_set_id = os->collector_set_id, | |
5250 | .obs_domain_id = os->obs_domain_id, | |
5251 | .obs_point_id = os->obs_point_id, | |
f69f713b | 5252 | .output_odp_port = output_odp_port, |
4930ea56 | 5253 | .direction = os->direction, |
a6092018 BP |
5254 | } |
5255 | }; | |
5256 | compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample, | |
f69f713b | 5257 | tunnel_out_port, false); |
9583bc14 EJ |
5258 | } |
5259 | ||
eee69393 AZ |
5260 | /* Determine if an datapath action translated from the openflow action |
5261 | * can be reversed by another datapath action. | |
5262 | * | |
5263 | * Openflow actions that do not emit datapath actions are trivially | |
5264 | * reversible. Reversiblity of other actions depends on nature of | |
5265 | * action and their translation. */ | |
5266 | static bool | |
5267 | reversible_actions(const struct ofpact *ofpacts, size_t ofpacts_len) | |
bef503e8 | 5268 | { |
eee69393 | 5269 | const struct ofpact *a; |
bef503e8 | 5270 | |
eee69393 AZ |
5271 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
5272 | switch (a->type) { | |
5273 | case OFPACT_BUNDLE: | |
5274 | case OFPACT_CLEAR_ACTIONS: | |
5275 | case OFPACT_CLONE: | |
5276 | case OFPACT_CONJUNCTION: | |
5277 | case OFPACT_CONTROLLER: | |
5278 | case OFPACT_CT_CLEAR: | |
5279 | case OFPACT_DEBUG_RECIRC: | |
5280 | case OFPACT_DEC_MPLS_TTL: | |
5281 | case OFPACT_DEC_TTL: | |
5282 | case OFPACT_ENQUEUE: | |
5283 | case OFPACT_EXIT: | |
5284 | case OFPACT_FIN_TIMEOUT: | |
5285 | case OFPACT_GOTO_TABLE: | |
5286 | case OFPACT_GROUP: | |
5287 | case OFPACT_LEARN: | |
5288 | case OFPACT_MULTIPATH: | |
5289 | case OFPACT_NOTE: | |
5290 | case OFPACT_OUTPUT: | |
5291 | case OFPACT_OUTPUT_REG: | |
5292 | case OFPACT_POP_MPLS: | |
5293 | case OFPACT_POP_QUEUE: | |
5294 | case OFPACT_PUSH_MPLS: | |
5295 | case OFPACT_PUSH_VLAN: | |
5296 | case OFPACT_REG_MOVE: | |
5297 | case OFPACT_RESUBMIT: | |
5298 | case OFPACT_SAMPLE: | |
5299 | case OFPACT_SET_ETH_DST: | |
5300 | case OFPACT_SET_ETH_SRC: | |
5301 | case OFPACT_SET_FIELD: | |
5302 | case OFPACT_SET_IP_DSCP: | |
5303 | case OFPACT_SET_IP_ECN: | |
5304 | case OFPACT_SET_IP_TTL: | |
5305 | case OFPACT_SET_IPV4_DST: | |
5306 | case OFPACT_SET_IPV4_SRC: | |
5307 | case OFPACT_SET_L4_DST_PORT: | |
5308 | case OFPACT_SET_L4_SRC_PORT: | |
5309 | case OFPACT_SET_MPLS_LABEL: | |
5310 | case OFPACT_SET_MPLS_TC: | |
5311 | case OFPACT_SET_MPLS_TTL: | |
5312 | case OFPACT_SET_QUEUE: | |
5313 | case OFPACT_SET_TUNNEL: | |
5314 | case OFPACT_SET_VLAN_PCP: | |
5315 | case OFPACT_SET_VLAN_VID: | |
5316 | case OFPACT_STACK_POP: | |
5317 | case OFPACT_STACK_PUSH: | |
5318 | case OFPACT_STRIP_VLAN: | |
5319 | case OFPACT_UNROLL_XLATE: | |
5320 | case OFPACT_WRITE_ACTIONS: | |
5321 | case OFPACT_WRITE_METADATA: | |
5322 | break; | |
5323 | ||
5324 | case OFPACT_CT: | |
5325 | case OFPACT_METER: | |
5326 | case OFPACT_NAT: | |
5327 | case OFPACT_OUTPUT_TRUNC: | |
2142be1f BP |
5328 | case OFPACT_ENCAP: |
5329 | case OFPACT_DECAP: | |
eee69393 | 5330 | return false; |
9c2a44dc | 5331 | } |
456024cb | 5332 | } |
eee69393 | 5333 | return true; |
bef503e8 AZ |
5334 | } |
5335 | ||
5336 | static void | |
c9f0a445 AZ |
5337 | clone_xlate_actions(const struct ofpact *actions, size_t actions_len, |
5338 | struct xlate_ctx *ctx) | |
7ae62a67 | 5339 | { |
b827b231 BP |
5340 | struct ofpbuf old_stack = ctx->stack; |
5341 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
5342 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); | |
5343 | ofpbuf_put(&ctx->stack, old_stack.data, old_stack.size); | |
5344 | ||
5345 | struct ofpbuf old_action_set = ctx->action_set; | |
5346 | uint64_t actset_stub[1024 / 8]; | |
5347 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); | |
5348 | ofpbuf_put(&ctx->action_set, old_action_set.data, old_action_set.size); | |
5349 | ||
eee69393 | 5350 | size_t offset, ac_offset; |
eee69393 AZ |
5351 | struct flow old_flow = ctx->xin->flow; |
5352 | ||
c9f0a445 | 5353 | if (reversible_actions(actions, actions_len)) { |
eee69393 | 5354 | old_flow = ctx->xin->flow; |
c9f0a445 | 5355 | do_xlate_actions(actions, actions_len, ctx); |
60eebf12 AZ |
5356 | if (ctx->freezing) { |
5357 | finish_freezing(ctx); | |
5358 | } | |
eee69393 AZ |
5359 | goto xlate_done; |
5360 | } | |
5361 | ||
5362 | /* Commit datapath actions before emitting the clone action to | |
5363 | * avoid emitting those actions twice. Once inside | |
5364 | * the clone, another time for the action after clone. */ | |
5365 | xlate_commit_actions(ctx); | |
9c2a44dc | 5366 | struct flow old_base = ctx->base_flow; |
eee69393 AZ |
5367 | bool old_was_mpls = ctx->was_mpls; |
5368 | bool old_conntracked = ctx->conntracked; | |
ba653d2a | 5369 | |
eee69393 AZ |
5370 | /* The actions are not reversible, a datapath clone action is |
5371 | * required to encode the translation. Select the clone action | |
5372 | * based on datapath capabilities. */ | |
5373 | if (ctx->xbridge->support.clone) { /* Use clone action */ | |
5374 | /* Use clone action as datapath clone. */ | |
5375 | offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_CLONE); | |
c9f0a445 | 5376 | do_xlate_actions(actions, actions_len, ctx); |
60eebf12 AZ |
5377 | if (ctx->freezing) { |
5378 | finish_freezing(ctx); | |
5379 | } | |
eee69393 AZ |
5380 | nl_msg_end_non_empty_nested(ctx->odp_actions, offset); |
5381 | goto dp_clone_done; | |
5382 | } | |
b827b231 | 5383 | |
eee69393 AZ |
5384 | if (ctx->xbridge->support.sample_nesting > 3) { |
5385 | /* Use sample action as datapath clone. */ | |
5386 | offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_SAMPLE); | |
5387 | ac_offset = nl_msg_start_nested(ctx->odp_actions, | |
5388 | OVS_SAMPLE_ATTR_ACTIONS); | |
c9f0a445 | 5389 | do_xlate_actions(actions, actions_len, ctx); |
60eebf12 AZ |
5390 | if (ctx->freezing) { |
5391 | finish_freezing(ctx); | |
5392 | } | |
eee69393 AZ |
5393 | if (nl_msg_end_non_empty_nested(ctx->odp_actions, ac_offset)) { |
5394 | nl_msg_cancel_nested(ctx->odp_actions, offset); | |
5395 | } else { | |
5396 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
5397 | UINT32_MAX); /* 100% probability. */ | |
5398 | nl_msg_end_nested(ctx->odp_actions, offset); | |
5399 | } | |
5400 | goto dp_clone_done; | |
5401 | } | |
5402 | ||
5403 | /* Datapath does not support clone, skip xlate 'oc' and | |
5404 | * report an error */ | |
5405 | xlate_report_error(ctx, "Failed to compose clone action"); | |
ba653d2a | 5406 | |
eee69393 | 5407 | dp_clone_done: |
ba653d2a BP |
5408 | /* The clone's conntrack execution should have no effect on the original |
5409 | * packet. */ | |
5410 | ctx->conntracked = old_conntracked; | |
bd3c2df3 BP |
5411 | |
5412 | /* Popping MPLS from the clone should have no effect on the original | |
5413 | * packet. */ | |
5414 | ctx->was_mpls = old_was_mpls; | |
eee69393 AZ |
5415 | |
5416 | /* Restore the 'base_flow' for the next action. */ | |
5417 | ctx->base_flow = old_base; | |
5418 | ||
5419 | xlate_done: | |
5420 | ofpbuf_uninit(&ctx->action_set); | |
5421 | ctx->action_set = old_action_set; | |
5422 | ofpbuf_uninit(&ctx->stack); | |
5423 | ctx->stack = old_stack; | |
5424 | ctx->xin->flow = old_flow; | |
7ae62a67 WT |
5425 | } |
5426 | ||
c9f0a445 AZ |
5427 | static void |
5428 | compose_clone(struct xlate_ctx *ctx, const struct ofpact_nest *oc) | |
5429 | { | |
5430 | size_t oc_actions_len = ofpact_nest_get_action_len(oc); | |
5431 | ||
5432 | clone_xlate_actions(oc->actions, oc_actions_len, ctx); | |
5433 | } | |
5434 | ||
076caa2f JR |
5435 | static void |
5436 | xlate_meter_action(struct xlate_ctx *ctx, const struct ofpact_meter *meter) | |
5437 | { | |
5438 | if (meter->provider_meter_id != UINT32_MAX) { | |
5439 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_METER, | |
5440 | meter->provider_meter_id); | |
5441 | } | |
5442 | } | |
5443 | ||
9583bc14 | 5444 | static bool |
46c88433 | 5445 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 5446 | { |
bbbca389 | 5447 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
5448 | ? OFPUTIL_PC_NO_RECV_STP |
5449 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
5450 | return false; |
5451 | } | |
5452 | ||
5453 | /* Only drop packets here if both forwarding and learning are | |
5454 | * disabled. If just learning is enabled, we need to have | |
5455 | * OFPP_NORMAL and the learning action have a look at the packet | |
5456 | * before we can drop it. */ | |
9efd308e DV |
5457 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
5458 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
5459 | return false; |
5460 | } | |
5461 | ||
5462 | return true; | |
5463 | } | |
5464 | ||
7fdb60a7 | 5465 | static void |
7e7e8dbb BP |
5466 | xlate_write_actions__(struct xlate_ctx *ctx, |
5467 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
7fdb60a7 | 5468 | { |
c61f3870 BP |
5469 | /* Maintain actset_output depending on the contents of the action set: |
5470 | * | |
5471 | * - OFPP_UNSET, if there is no "output" action. | |
5472 | * | |
5473 | * - The output port, if there is an "output" action and no "group" | |
5474 | * action. | |
5475 | * | |
5476 | * - OFPP_UNSET, if there is a "group" action. | |
5477 | */ | |
5478 | if (!ctx->action_set_has_group) { | |
7e7e8dbb BP |
5479 | const struct ofpact *a; |
5480 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
5481 | if (a->type == OFPACT_OUTPUT) { | |
5482 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(a)->port; | |
5483 | } else if (a->type == OFPACT_GROUP) { | |
c61f3870 BP |
5484 | ctx->xin->flow.actset_output = OFPP_UNSET; |
5485 | ctx->action_set_has_group = true; | |
9055ca9a | 5486 | break; |
c61f3870 BP |
5487 | } |
5488 | } | |
5489 | } | |
5490 | ||
7e7e8dbb BP |
5491 | ofpbuf_put(&ctx->action_set, ofpacts, ofpacts_len); |
5492 | } | |
5493 | ||
5494 | static void | |
5495 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact_nest *a) | |
5496 | { | |
5497 | xlate_write_actions__(ctx, a->actions, ofpact_nest_get_action_len(a)); | |
7fdb60a7 SH |
5498 | } |
5499 | ||
5500 | static void | |
5501 | xlate_action_set(struct xlate_ctx *ctx) | |
5502 | { | |
2d9b49dd BP |
5503 | uint64_t action_list_stub[1024 / 8]; |
5504 | struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub); | |
7fdb60a7 | 5505 | ofpacts_execute_action_set(&action_list, &ctx->action_set); |
ed9c9e3e JR |
5506 | /* Clear the action set, as it is not needed any more. */ |
5507 | ofpbuf_clear(&ctx->action_set); | |
2d9b49dd BP |
5508 | if (action_list.size) { |
5509 | ctx->in_action_set = true; | |
5510 | ||
5511 | struct ovs_list *old_trace = ctx->xin->trace; | |
5512 | ctx->xin->trace = xlate_report(ctx, OFT_TABLE, | |
5513 | "--. Executing action set:"); | |
5514 | do_xlate_actions(action_list.data, action_list.size, ctx); | |
5515 | ctx->xin->trace = old_trace; | |
5516 | ||
5517 | ctx->in_action_set = false; | |
5518 | } | |
7fdb60a7 SH |
5519 | ofpbuf_uninit(&action_list); |
5520 | } | |
5521 | ||
e672ff9b | 5522 | static void |
1d361a81 | 5523 | freeze_put_unroll_xlate(struct xlate_ctx *ctx) |
e672ff9b | 5524 | { |
1d361a81 | 5525 | struct ofpact_unroll_xlate *unroll = ctx->frozen_actions.header; |
e672ff9b JR |
5526 | |
5527 | /* Restore the table_id and rule cookie for a potential PACKET | |
5528 | * IN if needed. */ | |
5529 | if (!unroll || | |
5530 | (ctx->table_id != unroll->rule_table_id | |
5531 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
1d361a81 | 5532 | unroll = ofpact_put_UNROLL_XLATE(&ctx->frozen_actions); |
e672ff9b JR |
5533 | unroll->rule_table_id = ctx->table_id; |
5534 | unroll->rule_cookie = ctx->rule_cookie; | |
1d361a81 | 5535 | ctx->frozen_actions.header = unroll; |
e672ff9b JR |
5536 | } |
5537 | } | |
5538 | ||
5539 | ||
1d361a81 BP |
5540 | /* Copy actions 'a' through 'end' to ctx->frozen_actions, which will be |
5541 | * executed after thawing. Inserts an UNROLL_XLATE action, if none is already | |
5542 | * present, before any action that may depend on the current table ID or flow | |
5543 | * cookie. */ | |
e672ff9b | 5544 | static void |
1d361a81 | 5545 | freeze_unroll_actions(const struct ofpact *a, const struct ofpact *end, |
e672ff9b JR |
5546 | struct xlate_ctx *ctx) |
5547 | { | |
c2b283b7 | 5548 | for (; a < end; a = ofpact_next(a)) { |
e672ff9b | 5549 | switch (a->type) { |
e672ff9b | 5550 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 5551 | case OFPACT_OUTPUT_TRUNC: |
e672ff9b JR |
5552 | case OFPACT_GROUP: |
5553 | case OFPACT_OUTPUT: | |
5554 | case OFPACT_CONTROLLER: | |
5555 | case OFPACT_DEC_MPLS_TTL: | |
5556 | case OFPACT_DEC_TTL: | |
83a31283 BP |
5557 | /* These actions may generate asynchronous messages, which include |
5558 | * table ID and flow cookie information. */ | |
1d361a81 | 5559 | freeze_put_unroll_xlate(ctx); |
e672ff9b JR |
5560 | break; |
5561 | ||
83a31283 BP |
5562 | case OFPACT_RESUBMIT: |
5563 | if (ofpact_get_RESUBMIT(a)->table_id == 0xff) { | |
5564 | /* This resubmit action is relative to the current table, so we | |
5565 | * need to track what table that is.*/ | |
1d361a81 | 5566 | freeze_put_unroll_xlate(ctx); |
83a31283 BP |
5567 | } |
5568 | break; | |
5569 | ||
e672ff9b JR |
5570 | case OFPACT_SET_TUNNEL: |
5571 | case OFPACT_REG_MOVE: | |
5572 | case OFPACT_SET_FIELD: | |
5573 | case OFPACT_STACK_PUSH: | |
5574 | case OFPACT_STACK_POP: | |
5575 | case OFPACT_LEARN: | |
5576 | case OFPACT_WRITE_METADATA: | |
83a31283 | 5577 | case OFPACT_GOTO_TABLE: |
e672ff9b JR |
5578 | case OFPACT_ENQUEUE: |
5579 | case OFPACT_SET_VLAN_VID: | |
5580 | case OFPACT_SET_VLAN_PCP: | |
5581 | case OFPACT_STRIP_VLAN: | |
5582 | case OFPACT_PUSH_VLAN: | |
5583 | case OFPACT_SET_ETH_SRC: | |
5584 | case OFPACT_SET_ETH_DST: | |
5585 | case OFPACT_SET_IPV4_SRC: | |
5586 | case OFPACT_SET_IPV4_DST: | |
5587 | case OFPACT_SET_IP_DSCP: | |
5588 | case OFPACT_SET_IP_ECN: | |
5589 | case OFPACT_SET_IP_TTL: | |
5590 | case OFPACT_SET_L4_SRC_PORT: | |
5591 | case OFPACT_SET_L4_DST_PORT: | |
5592 | case OFPACT_SET_QUEUE: | |
5593 | case OFPACT_POP_QUEUE: | |
5594 | case OFPACT_PUSH_MPLS: | |
5595 | case OFPACT_POP_MPLS: | |
5596 | case OFPACT_SET_MPLS_LABEL: | |
5597 | case OFPACT_SET_MPLS_TC: | |
5598 | case OFPACT_SET_MPLS_TTL: | |
5599 | case OFPACT_MULTIPATH: | |
5600 | case OFPACT_BUNDLE: | |
5601 | case OFPACT_EXIT: | |
5602 | case OFPACT_UNROLL_XLATE: | |
5603 | case OFPACT_FIN_TIMEOUT: | |
5604 | case OFPACT_CLEAR_ACTIONS: | |
5605 | case OFPACT_WRITE_ACTIONS: | |
5606 | case OFPACT_METER: | |
5607 | case OFPACT_SAMPLE: | |
7ae62a67 | 5608 | case OFPACT_CLONE: |
f839892a JS |
5609 | case OFPACT_ENCAP: |
5610 | case OFPACT_DECAP: | |
d4abaff5 | 5611 | case OFPACT_DEBUG_RECIRC: |
07659514 | 5612 | case OFPACT_CT: |
72fe7578 | 5613 | case OFPACT_CT_CLEAR: |
9ac0aada | 5614 | case OFPACT_NAT: |
83a31283 | 5615 | /* These may not generate PACKET INs. */ |
e672ff9b JR |
5616 | break; |
5617 | ||
e672ff9b JR |
5618 | case OFPACT_NOTE: |
5619 | case OFPACT_CONJUNCTION: | |
83a31283 | 5620 | /* These need not be copied for restoration. */ |
e672ff9b JR |
5621 | continue; |
5622 | } | |
5623 | /* Copy the action over. */ | |
1d361a81 | 5624 | ofpbuf_put(&ctx->frozen_actions, a, OFPACT_ALIGN(a->len)); |
e672ff9b JR |
5625 | } |
5626 | } | |
5627 | ||
8e53fe8c | 5628 | static void |
f2d105b5 JS |
5629 | put_ct_mark(const struct flow *flow, struct ofpbuf *odp_actions, |
5630 | struct flow_wildcards *wc) | |
8e53fe8c | 5631 | { |
2a754f4a JS |
5632 | if (wc->masks.ct_mark) { |
5633 | struct { | |
5634 | uint32_t key; | |
5635 | uint32_t mask; | |
5636 | } *odp_ct_mark; | |
5637 | ||
5638 | odp_ct_mark = nl_msg_put_unspec_uninit(odp_actions, OVS_CT_ATTR_MARK, | |
5639 | sizeof(*odp_ct_mark)); | |
5640 | odp_ct_mark->key = flow->ct_mark & wc->masks.ct_mark; | |
5641 | odp_ct_mark->mask = wc->masks.ct_mark; | |
8e53fe8c JS |
5642 | } |
5643 | } | |
5644 | ||
9daf2348 | 5645 | static void |
f2d105b5 JS |
5646 | put_ct_label(const struct flow *flow, struct ofpbuf *odp_actions, |
5647 | struct flow_wildcards *wc) | |
9daf2348 | 5648 | { |
2ff8484b | 5649 | if (!ovs_u128_is_zero(wc->masks.ct_label)) { |
9daf2348 JS |
5650 | struct { |
5651 | ovs_u128 key; | |
5652 | ovs_u128 mask; | |
89cf41ec | 5653 | } odp_ct_label; |
9daf2348 | 5654 | |
89cf41ec BP |
5655 | odp_ct_label.key = ovs_u128_and(flow->ct_label, wc->masks.ct_label); |
5656 | odp_ct_label.mask = wc->masks.ct_label; | |
5657 | nl_msg_put_unspec(odp_actions, OVS_CT_ATTR_LABELS, | |
5658 | &odp_ct_label, sizeof odp_ct_label); | |
9daf2348 JS |
5659 | } |
5660 | } | |
5661 | ||
d787ad39 | 5662 | static void |
2d9b49dd BP |
5663 | put_ct_helper(struct xlate_ctx *ctx, |
5664 | struct ofpbuf *odp_actions, struct ofpact_conntrack *ofc) | |
d787ad39 JS |
5665 | { |
5666 | if (ofc->alg) { | |
40c7b2fc JS |
5667 | switch(ofc->alg) { |
5668 | case IPPORT_FTP: | |
d787ad39 | 5669 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "ftp"); |
40c7b2fc JS |
5670 | break; |
5671 | case IPPORT_TFTP: | |
5672 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "tftp"); | |
5673 | break; | |
5674 | default: | |
2d9b49dd | 5675 | xlate_report_error(ctx, "cannot serialize ct_helper %d", ofc->alg); |
40c7b2fc | 5676 | break; |
d787ad39 JS |
5677 | } |
5678 | } | |
5679 | } | |
5680 | ||
9ac0aada JR |
5681 | static void |
5682 | put_ct_nat(struct xlate_ctx *ctx) | |
5683 | { | |
5684 | struct ofpact_nat *ofn = ctx->ct_nat_action; | |
5685 | size_t nat_offset; | |
5686 | ||
5687 | if (!ofn) { | |
5688 | return; | |
5689 | } | |
5690 | ||
5691 | nat_offset = nl_msg_start_nested(ctx->odp_actions, OVS_CT_ATTR_NAT); | |
5692 | if (ofn->flags & NX_NAT_F_SRC || ofn->flags & NX_NAT_F_DST) { | |
5693 | nl_msg_put_flag(ctx->odp_actions, ofn->flags & NX_NAT_F_SRC | |
5694 | ? OVS_NAT_ATTR_SRC : OVS_NAT_ATTR_DST); | |
5695 | if (ofn->flags & NX_NAT_F_PERSISTENT) { | |
5696 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PERSISTENT); | |
5697 | } | |
5698 | if (ofn->flags & NX_NAT_F_PROTO_HASH) { | |
5699 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_HASH); | |
5700 | } else if (ofn->flags & NX_NAT_F_PROTO_RANDOM) { | |
5701 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_RANDOM); | |
5702 | } | |
5703 | if (ofn->range_af == AF_INET) { | |
73e8bc23 | 5704 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, |
9ac0aada JR |
5705 | ofn->range.addr.ipv4.min); |
5706 | if (ofn->range.addr.ipv4.max && | |
73e8bc23 BP |
5707 | (ntohl(ofn->range.addr.ipv4.max) |
5708 | > ntohl(ofn->range.addr.ipv4.min))) { | |
5709 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
5710 | ofn->range.addr.ipv4.max); | |
9ac0aada JR |
5711 | } |
5712 | } else if (ofn->range_af == AF_INET6) { | |
5713 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, | |
5714 | &ofn->range.addr.ipv6.min, | |
5715 | sizeof ofn->range.addr.ipv6.min); | |
5716 | if (!ipv6_mask_is_any(&ofn->range.addr.ipv6.max) && | |
5717 | memcmp(&ofn->range.addr.ipv6.max, &ofn->range.addr.ipv6.min, | |
5718 | sizeof ofn->range.addr.ipv6.max) > 0) { | |
5719 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
5720 | &ofn->range.addr.ipv6.max, | |
5721 | sizeof ofn->range.addr.ipv6.max); | |
5722 | } | |
5723 | } | |
5724 | if (ofn->range_af != AF_UNSPEC && ofn->range.proto.min) { | |
5725 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MIN, | |
5726 | ofn->range.proto.min); | |
5727 | if (ofn->range.proto.max && | |
5728 | ofn->range.proto.max > ofn->range.proto.min) { | |
5729 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MAX, | |
5730 | ofn->range.proto.max); | |
5731 | } | |
5732 | } | |
5733 | } | |
5734 | nl_msg_end_nested(ctx->odp_actions, nat_offset); | |
5735 | } | |
5736 | ||
07659514 JS |
5737 | static void |
5738 | compose_conntrack_action(struct xlate_ctx *ctx, struct ofpact_conntrack *ofc) | |
5739 | { | |
f2d105b5 | 5740 | ovs_u128 old_ct_label_mask = ctx->wc->masks.ct_label; |
f2d105b5 | 5741 | uint32_t old_ct_mark_mask = ctx->wc->masks.ct_mark; |
07659514 JS |
5742 | size_t ct_offset; |
5743 | uint16_t zone; | |
5744 | ||
5745 | /* Ensure that any prior actions are applied before composing the new | |
5746 | * conntrack action. */ | |
5747 | xlate_commit_actions(ctx); | |
5748 | ||
8e53fe8c | 5749 | /* Process nested actions first, to populate the key. */ |
9ac0aada | 5750 | ctx->ct_nat_action = NULL; |
f2d105b5 | 5751 | ctx->wc->masks.ct_mark = 0; |
f6fabcc6 | 5752 | ctx->wc->masks.ct_label = OVS_U128_ZERO; |
8e53fe8c JS |
5753 | do_xlate_actions(ofc->actions, ofpact_ct_get_action_len(ofc), ctx); |
5754 | ||
07659514 JS |
5755 | if (ofc->zone_src.field) { |
5756 | zone = mf_get_subfield(&ofc->zone_src, &ctx->xin->flow); | |
5757 | } else { | |
5758 | zone = ofc->zone_imm; | |
5759 | } | |
5760 | ||
5761 | ct_offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_CT); | |
5762 | if (ofc->flags & NX_CT_F_COMMIT) { | |
a76a37ef JR |
5763 | nl_msg_put_flag(ctx->odp_actions, ofc->flags & NX_CT_F_FORCE ? |
5764 | OVS_CT_ATTR_FORCE_COMMIT : OVS_CT_ATTR_COMMIT); | |
adfe7a0b JR |
5765 | if (ctx->xbridge->support.ct_eventmask) { |
5766 | nl_msg_put_u32(ctx->odp_actions, OVS_CT_ATTR_EVENTMASK, | |
975954af | 5767 | OVS_CT_EVENTMASK_DEFAULT); |
adfe7a0b | 5768 | } |
07659514 JS |
5769 | } |
5770 | nl_msg_put_u16(ctx->odp_actions, OVS_CT_ATTR_ZONE, zone); | |
f2d105b5 JS |
5771 | put_ct_mark(&ctx->xin->flow, ctx->odp_actions, ctx->wc); |
5772 | put_ct_label(&ctx->xin->flow, ctx->odp_actions, ctx->wc); | |
2d9b49dd | 5773 | put_ct_helper(ctx, ctx->odp_actions, ofc); |
9ac0aada JR |
5774 | put_ct_nat(ctx); |
5775 | ctx->ct_nat_action = NULL; | |
07659514 JS |
5776 | nl_msg_end_nested(ctx->odp_actions, ct_offset); |
5777 | ||
f2d105b5 | 5778 | ctx->wc->masks.ct_mark = old_ct_mark_mask; |
f2d105b5 | 5779 | ctx->wc->masks.ct_label = old_ct_label_mask; |
8e53fe8c | 5780 | |
f6fabcc6 | 5781 | if (ofc->recirc_table != NX_CT_RECIRC_NONE) { |
07659514 | 5782 | ctx->conntracked = true; |
e37b8437 | 5783 | compose_recirculate_and_fork(ctx, ofc->recirc_table); |
07659514 | 5784 | } |
f6fabcc6 JP |
5785 | |
5786 | /* The ct_* fields are only available in the scope of the 'recirc_table' | |
5787 | * call chain. */ | |
5788 | flow_clear_conntrack(&ctx->xin->flow); | |
5789 | ctx->conntracked = false; | |
07659514 JS |
5790 | } |
5791 | ||
f839892a JS |
5792 | static void |
5793 | rewrite_flow_encap_ethernet(struct xlate_ctx *ctx, | |
5794 | struct flow *flow, | |
5795 | struct flow_wildcards *wc) | |
5796 | { | |
5797 | wc->masks.packet_type = OVS_BE32_MAX; | |
5798 | if (pt_ns(flow->packet_type) == OFPHTN_ETHERTYPE) { | |
5799 | /* Only adjust the packet_type and zero the dummy Ethernet addresses. */ | |
5800 | ovs_be16 ethertype = pt_ns_type_be(flow->packet_type); | |
5801 | flow->packet_type = htonl(PT_ETH); | |
5802 | flow->dl_src = eth_addr_zero; | |
5803 | flow->dl_dst = eth_addr_zero; | |
5804 | flow->dl_type = ethertype; | |
5805 | } else { | |
1fc11c59 | 5806 | /* Error handling: drop packet. */ |
f839892a | 5807 | xlate_report_debug(ctx, OFT_ACTION, |
1fc11c59 JS |
5808 | "Dropping packet as encap(ethernet) is not " |
5809 | "supported for packet type ethernet."); | |
f839892a JS |
5810 | ctx->error = 1; |
5811 | } | |
5812 | } | |
5813 | ||
1fc11c59 JS |
5814 | /* For an MD2 NSH header returns a pointer to an ofpbuf with the encoded |
5815 | * MD2 TLVs provided as encap properties to the encap operation. This | |
5816 | * will be stored as encap_data in the ctx and copied into the encap_nsh | |
5817 | * action at the next commit. */ | |
5818 | static struct ofpbuf * | |
5819 | rewrite_flow_encap_nsh(struct xlate_ctx *ctx, | |
5820 | const struct ofpact_encap *encap, | |
5821 | struct flow *flow, | |
5822 | struct flow_wildcards *wc) | |
5823 | { | |
5824 | ovs_be32 packet_type = flow->packet_type; | |
5825 | const char *ptr = (char *) encap->props; | |
5826 | struct ofpbuf *buf = ofpbuf_new(OVS_ENCAP_NSH_MAX_MD_LEN); | |
5827 | uint8_t md_type = NSH_M_TYPE1; | |
5828 | uint8_t np = 0; | |
5829 | int i; | |
5830 | ||
5831 | /* Scan the optional NSH encap TLV properties, if any. */ | |
5832 | for (i = 0; i < encap->n_props; i++) { | |
5833 | struct ofpact_ed_prop *prop_ptr = | |
5834 | ALIGNED_CAST(struct ofpact_ed_prop *, ptr); | |
5835 | if (prop_ptr->prop_class == OFPPPC_NSH) { | |
5836 | switch (prop_ptr->type) { | |
5837 | case OFPPPT_PROP_NSH_MDTYPE: { | |
5838 | struct ofpact_ed_prop_nsh_md_type *prop_md_type = | |
5839 | ALIGNED_CAST(struct ofpact_ed_prop_nsh_md_type *, | |
5840 | prop_ptr); | |
5841 | md_type = prop_md_type->md_type; | |
5842 | break; | |
5843 | } | |
5844 | case OFPPPT_PROP_NSH_TLV: { | |
5845 | struct ofpact_ed_prop_nsh_tlv *tlv_prop = | |
5846 | ALIGNED_CAST(struct ofpact_ed_prop_nsh_tlv *, | |
5847 | prop_ptr); | |
5848 | struct nsh_md2_tlv *md2_ctx = | |
5849 | ofpbuf_put_uninit(buf, sizeof(*md2_ctx)); | |
5850 | md2_ctx->md_class = tlv_prop->tlv_class; | |
5851 | md2_ctx->type = tlv_prop->tlv_type; | |
5852 | md2_ctx->length = tlv_prop->tlv_len; | |
5853 | size_t len = ROUND_UP(md2_ctx->length, 4); | |
5854 | size_t padding = len - md2_ctx->length; | |
5855 | ofpbuf_put(buf, tlv_prop->data, md2_ctx->length); | |
5856 | ofpbuf_put_zeros(buf, padding); | |
5857 | break; | |
5858 | } | |
5859 | default: | |
5860 | /* No other NSH encap properties defined yet. */ | |
5861 | break; | |
5862 | } | |
5863 | } | |
5864 | ptr += ROUND_UP(prop_ptr->len, 8); | |
5865 | } | |
5866 | if (buf->size == 0 || buf->size > OVS_ENCAP_NSH_MAX_MD_LEN) { | |
5867 | ofpbuf_delete(buf); | |
5868 | buf = NULL; | |
5869 | } | |
5870 | ||
5871 | /* Determine the Next Protocol field for NSH header. */ | |
5872 | switch (ntohl(packet_type)) { | |
5873 | case PT_ETH: | |
5874 | np = NSH_P_ETHERNET; | |
5875 | break; | |
5876 | case PT_IPV4: | |
5877 | np = NSH_P_IPV4; | |
5878 | break; | |
5879 | case PT_IPV6: | |
5880 | np = NSH_P_IPV6; | |
5881 | break; | |
5882 | case PT_NSH: | |
5883 | np = NSH_P_NSH; | |
5884 | break; | |
5885 | default: | |
5886 | /* Error handling: drop packet. */ | |
5887 | xlate_report_debug(ctx, OFT_ACTION, | |
5888 | "Dropping packet as encap(nsh) is not " | |
5889 | "supported for packet type (%d,0x%x)", | |
5890 | pt_ns(packet_type), pt_ns_type(packet_type)); | |
5891 | ctx->error = 1; | |
5892 | return buf; | |
5893 | } | |
5894 | /* Note that we have matched on packet_type! */ | |
5895 | wc->masks.packet_type = OVS_BE32_MAX; | |
5896 | ||
5897 | /* Reset all current flow packet headers. */ | |
5898 | memset(&flow->dl_dst, 0, | |
5899 | sizeof(struct flow) - offsetof(struct flow, dl_dst)); | |
5900 | ||
5901 | /* Populate the flow with the new NSH header. */ | |
5902 | flow->packet_type = htonl(PT_NSH); | |
5903 | flow->dl_type = htons(ETH_TYPE_NSH); | |
5904 | flow->nsh.flags = 0; /* */ | |
5905 | flow->nsh.np = np; | |
5906 | flow->nsh.spi = 0; | |
5907 | flow->nsh.si = 255; | |
5908 | ||
5909 | if (md_type == NSH_M_TYPE1) { | |
5910 | flow->nsh.mdtype = NSH_M_TYPE1; | |
5911 | memset(flow->nsh.c, 0, sizeof flow->nsh.c); | |
5912 | if (buf) { | |
5913 | /* Drop any MD2 context TLVs. */ | |
5914 | ofpbuf_delete(buf); | |
5915 | buf = NULL; | |
5916 | } | |
5917 | } else if (md_type == NSH_M_TYPE2) { | |
5918 | flow->nsh.mdtype = NSH_M_TYPE2; | |
5919 | } | |
5920 | ||
5921 | return buf; | |
5922 | } | |
5923 | ||
f839892a JS |
5924 | static void |
5925 | xlate_generic_encap_action(struct xlate_ctx *ctx, | |
5926 | const struct ofpact_encap *encap) | |
5927 | { | |
5928 | struct flow *flow = &ctx->xin->flow; | |
5929 | struct flow_wildcards *wc = ctx->wc; | |
1fc11c59 | 5930 | struct ofpbuf *encap_data = NULL; |
f839892a JS |
5931 | |
5932 | /* Ensure that any pending actions on the inner packet are applied before | |
5933 | * rewriting the flow */ | |
5934 | xlate_commit_actions(ctx); | |
5935 | ||
5936 | /* Rewrite the flow to reflect the effect of pushing the new encap header. */ | |
5937 | switch (ntohl(encap->new_pkt_type)) { | |
5938 | case PT_ETH: | |
5939 | rewrite_flow_encap_ethernet(ctx, flow, wc); | |
5940 | break; | |
1fc11c59 JS |
5941 | case PT_NSH: |
5942 | encap_data = rewrite_flow_encap_nsh(ctx, encap, flow, wc); | |
5943 | break; | |
f839892a | 5944 | default: |
1fc11c59 JS |
5945 | /* New packet type was checked during decoding. */ |
5946 | OVS_NOT_REACHED(); | |
f839892a JS |
5947 | break; |
5948 | } | |
5949 | ||
5950 | if (!ctx->error) { | |
5951 | /* The actual encap datapath action will be generated at next commit. */ | |
5952 | ctx->pending_encap = true; | |
1fc11c59 | 5953 | ctx->encap_data = encap_data; |
f839892a JS |
5954 | } |
5955 | } | |
5956 | ||
5957 | /* Returns true if packet must be recirculated after decapsulation. */ | |
5958 | static bool | |
5959 | xlate_generic_decap_action(struct xlate_ctx *ctx, | |
5960 | const struct ofpact_decap *decap OVS_UNUSED) | |
5961 | { | |
5962 | struct flow *flow = &ctx->xin->flow; | |
5963 | ||
5964 | /* Ensure that any pending actions on the current packet are applied | |
5965 | * before generating the decap action. */ | |
5966 | xlate_commit_actions(ctx); | |
5967 | ||
5968 | /* We assume for now that the new_pkt_type is PT_USE_NEXT_PROTO. */ | |
5969 | switch (ntohl(flow->packet_type)) { | |
5970 | case PT_ETH: | |
5971 | if (flow->vlans[0].tci & htons(VLAN_CFI)) { | |
5972 | /* Error handling: drop packet. */ | |
5973 | xlate_report_debug(ctx, OFT_ACTION, "Dropping packet, cannot " | |
5974 | "decap Ethernet if VLAN is present."); | |
5975 | ctx->error = 1; | |
5976 | } else { | |
5977 | /* Just change the packet_type. | |
5978 | * Delay generating pop_eth to the next commit. */ | |
5979 | flow->packet_type = htonl(PACKET_TYPE(OFPHTN_ETHERTYPE, | |
5980 | ntohs(flow->dl_type))); | |
5981 | ctx->wc->masks.dl_type = OVS_BE16_MAX; | |
5982 | } | |
5983 | return false; | |
1fc11c59 JS |
5984 | case PT_NSH: |
5985 | /* The decap_nsh action is generated at the commit executed as | |
5986 | * part of freezing the ctx for recirculation. Here we just set | |
5987 | * the new packet type based on the NSH next protocol field. */ | |
5988 | switch (flow->nsh.np) { | |
5989 | case NSH_P_ETHERNET: | |
5990 | flow->packet_type = htonl(PT_ETH); | |
5991 | break; | |
5992 | case NSH_P_IPV4: | |
5993 | flow->packet_type = htonl(PT_IPV4); | |
5994 | break; | |
5995 | case NSH_P_IPV6: | |
5996 | flow->packet_type = htonl(PT_IPV6); | |
5997 | break; | |
5998 | case NSH_P_NSH: | |
5999 | flow->packet_type = htonl(PT_NSH); | |
6000 | break; | |
6001 | default: | |
6002 | /* Error handling: drop packet. */ | |
6003 | xlate_report_debug(ctx, OFT_ACTION, | |
6004 | "Dropping packet as NSH next protocol %d " | |
6005 | "is not supported", flow->nsh.np); | |
6006 | ctx->error = 1; | |
6007 | return false; | |
6008 | break; | |
6009 | } | |
6010 | ctx->wc->masks.nsh.np = UINT8_MAX; | |
6011 | /* Trigger recirculation. */ | |
6012 | return true; | |
f839892a | 6013 | default: |
1fc11c59 JS |
6014 | /* Error handling: drop packet. */ |
6015 | xlate_report_debug( | |
6016 | ctx, OFT_ACTION, | |
6017 | "Dropping packet as the decap() does not support " | |
6018 | "packet type (%d,0x%x)", | |
6019 | pt_ns(flow->packet_type), pt_ns_type(flow->packet_type)); | |
f839892a JS |
6020 | ctx->error = 1; |
6021 | return false; | |
6022 | } | |
6023 | } | |
6024 | ||
e12ec36b SH |
6025 | static void |
6026 | recirc_for_mpls(const struct ofpact *a, struct xlate_ctx *ctx) | |
6027 | { | |
6028 | /* No need to recirculate if already exiting. */ | |
6029 | if (ctx->exit) { | |
6030 | return; | |
6031 | } | |
6032 | ||
6033 | /* Do not consider recirculating unless the packet was previously MPLS. */ | |
6034 | if (!ctx->was_mpls) { | |
6035 | return; | |
6036 | } | |
6037 | ||
6038 | /* Special case these actions, only recirculating if necessary. | |
6039 | * This avoids the overhead of recirculation in common use-cases. | |
6040 | */ | |
6041 | switch (a->type) { | |
6042 | ||
6043 | /* Output actions do not require recirculation. */ | |
6044 | case OFPACT_OUTPUT: | |
aaca4fe0 | 6045 | case OFPACT_OUTPUT_TRUNC: |
e12ec36b SH |
6046 | case OFPACT_ENQUEUE: |
6047 | case OFPACT_OUTPUT_REG: | |
6048 | /* Set actions that don't touch L3+ fields do not require recirculation. */ | |
6049 | case OFPACT_SET_VLAN_VID: | |
6050 | case OFPACT_SET_VLAN_PCP: | |
6051 | case OFPACT_SET_ETH_SRC: | |
6052 | case OFPACT_SET_ETH_DST: | |
6053 | case OFPACT_SET_TUNNEL: | |
6054 | case OFPACT_SET_QUEUE: | |
6055 | /* If actions of a group require recirculation that can be detected | |
6056 | * when translating them. */ | |
6057 | case OFPACT_GROUP: | |
6058 | return; | |
6059 | ||
6060 | /* Set field that don't touch L3+ fields don't require recirculation. */ | |
6061 | case OFPACT_SET_FIELD: | |
6062 | if (mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)) { | |
6063 | break; | |
6064 | } | |
6065 | return; | |
6066 | ||
6067 | /* For simplicity, recirculate in all other cases. */ | |
6068 | case OFPACT_CONTROLLER: | |
6069 | case OFPACT_BUNDLE: | |
6070 | case OFPACT_STRIP_VLAN: | |
6071 | case OFPACT_PUSH_VLAN: | |
6072 | case OFPACT_SET_IPV4_SRC: | |
6073 | case OFPACT_SET_IPV4_DST: | |
6074 | case OFPACT_SET_IP_DSCP: | |
6075 | case OFPACT_SET_IP_ECN: | |
6076 | case OFPACT_SET_IP_TTL: | |
6077 | case OFPACT_SET_L4_SRC_PORT: | |
6078 | case OFPACT_SET_L4_DST_PORT: | |
6079 | case OFPACT_REG_MOVE: | |
6080 | case OFPACT_STACK_PUSH: | |
6081 | case OFPACT_STACK_POP: | |
6082 | case OFPACT_DEC_TTL: | |
6083 | case OFPACT_SET_MPLS_LABEL: | |
6084 | case OFPACT_SET_MPLS_TC: | |
6085 | case OFPACT_SET_MPLS_TTL: | |
6086 | case OFPACT_DEC_MPLS_TTL: | |
6087 | case OFPACT_PUSH_MPLS: | |
6088 | case OFPACT_POP_MPLS: | |
6089 | case OFPACT_POP_QUEUE: | |
6090 | case OFPACT_FIN_TIMEOUT: | |
6091 | case OFPACT_RESUBMIT: | |
6092 | case OFPACT_LEARN: | |
6093 | case OFPACT_CONJUNCTION: | |
6094 | case OFPACT_MULTIPATH: | |
6095 | case OFPACT_NOTE: | |
6096 | case OFPACT_EXIT: | |
6097 | case OFPACT_SAMPLE: | |
7ae62a67 | 6098 | case OFPACT_CLONE: |
f839892a JS |
6099 | case OFPACT_ENCAP: |
6100 | case OFPACT_DECAP: | |
e12ec36b SH |
6101 | case OFPACT_UNROLL_XLATE: |
6102 | case OFPACT_CT: | |
72fe7578 | 6103 | case OFPACT_CT_CLEAR: |
e12ec36b SH |
6104 | case OFPACT_NAT: |
6105 | case OFPACT_DEBUG_RECIRC: | |
6106 | case OFPACT_METER: | |
6107 | case OFPACT_CLEAR_ACTIONS: | |
6108 | case OFPACT_WRITE_ACTIONS: | |
6109 | case OFPACT_WRITE_METADATA: | |
6110 | case OFPACT_GOTO_TABLE: | |
6111 | default: | |
6112 | break; | |
6113 | } | |
6114 | ||
6115 | /* Recirculate */ | |
6116 | ctx_trigger_freeze(ctx); | |
6117 | } | |
6118 | ||
2d9b49dd BP |
6119 | static void |
6120 | xlate_ofpact_reg_move(struct xlate_ctx *ctx, const struct ofpact_reg_move *a) | |
6121 | { | |
6122 | mf_subfield_copy(&a->src, &a->dst, &ctx->xin->flow, ctx->wc); | |
6123 | xlate_report_subfield(ctx, &a->dst); | |
6124 | } | |
6125 | ||
6126 | static void | |
6127 | xlate_ofpact_stack_pop(struct xlate_ctx *ctx, const struct ofpact_stack *a) | |
6128 | { | |
6129 | if (nxm_execute_stack_pop(a, &ctx->xin->flow, ctx->wc, &ctx->stack)) { | |
6130 | xlate_report_subfield(ctx, &a->subfield); | |
6131 | } else { | |
6132 | xlate_report_error(ctx, "stack underflow"); | |
6133 | } | |
6134 | } | |
6135 | ||
6136 | /* Restore translation context data that was stored earlier. */ | |
6137 | static void | |
6138 | xlate_ofpact_unroll_xlate(struct xlate_ctx *ctx, | |
6139 | const struct ofpact_unroll_xlate *a) | |
6140 | { | |
6141 | ctx->table_id = a->rule_table_id; | |
6142 | ctx->rule_cookie = a->rule_cookie; | |
6143 | xlate_report(ctx, OFT_THAW, "restored state: table=%"PRIu8", " | |
6144 | "cookie=%#"PRIx64, a->rule_table_id, a->rule_cookie); | |
6145 | } | |
6146 | ||
9583bc14 EJ |
6147 | static void |
6148 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
6149 | struct xlate_ctx *ctx) | |
6150 | { | |
49a73e0c | 6151 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 6152 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
6153 | const struct ofpact *a; |
6154 | ||
a36de779 | 6155 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
53902038 | 6156 | tnl_neigh_snoop(flow, wc, ctx->xbridge->name); |
a36de779 | 6157 | } |
f47ea021 JR |
6158 | /* dl_type already in the mask, not set below. */ |
6159 | ||
2d9b49dd BP |
6160 | if (!ofpacts_len) { |
6161 | xlate_report(ctx, OFT_ACTION, "drop"); | |
6162 | return; | |
6163 | } | |
6164 | ||
9583bc14 EJ |
6165 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
6166 | struct ofpact_controller *controller; | |
6167 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
6168 | const struct ofpact_set_field *set_field; |
6169 | const struct mf_field *mf; | |
9583bc14 | 6170 | |
fff1b9c0 JR |
6171 | if (ctx->error) { |
6172 | break; | |
6173 | } | |
6174 | ||
e12ec36b SH |
6175 | recirc_for_mpls(a, ctx); |
6176 | ||
e672ff9b JR |
6177 | if (ctx->exit) { |
6178 | /* Check if need to store the remaining actions for later | |
6179 | * execution. */ | |
1d361a81 BP |
6180 | if (ctx->freezing) { |
6181 | freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), | |
e672ff9b JR |
6182 | ctx); |
6183 | } | |
6184 | break; | |
7bbdd84f SH |
6185 | } |
6186 | ||
2d9b49dd BP |
6187 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
6188 | struct ds s = DS_EMPTY_INITIALIZER; | |
50f96b10 | 6189 | ofpacts_format(a, OFPACT_ALIGN(a->len), NULL, &s); |
2d9b49dd BP |
6190 | xlate_report(ctx, OFT_ACTION, "%s", ds_cstr(&s)); |
6191 | ds_destroy(&s); | |
6192 | } | |
6193 | ||
9583bc14 EJ |
6194 | switch (a->type) { |
6195 | case OFPACT_OUTPUT: | |
6196 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
6197 | ofpact_get_OUTPUT(a)->max_len, true); | |
6198 | break; | |
6199 | ||
7395c052 | 6200 | case OFPACT_GROUP: |
f4fb341b | 6201 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 6202 | /* Group could not be found. */ |
db88b35c JR |
6203 | |
6204 | /* XXX: Terminates action list translation, but does not | |
6205 | * terminate the pipeline. */ | |
f4fb341b SH |
6206 | return; |
6207 | } | |
7395c052 NZ |
6208 | break; |
6209 | ||
9583bc14 EJ |
6210 | case OFPACT_CONTROLLER: |
6211 | controller = ofpact_get_CONTROLLER(a); | |
77ab5fd2 BP |
6212 | if (controller->pause) { |
6213 | ctx->pause = controller; | |
6214 | ctx->xout->slow |= SLOW_CONTROLLER; | |
0d3239e8 | 6215 | *ctx->paused_flow = ctx->xin->flow; |
77ab5fd2 BP |
6216 | ctx_trigger_freeze(ctx); |
6217 | a = ofpact_next(a); | |
6218 | } else { | |
6219 | execute_controller_action(ctx, controller->max_len, | |
6220 | controller->reason, | |
6221 | controller->controller_id, | |
6222 | controller->userdata, | |
6223 | controller->userdata_len); | |
6224 | } | |
9583bc14 EJ |
6225 | break; |
6226 | ||
6227 | case OFPACT_ENQUEUE: | |
16194afd DDP |
6228 | memset(&wc->masks.skb_priority, 0xff, |
6229 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
6230 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
6231 | break; | |
6232 | ||
6233 | case OFPACT_SET_VLAN_VID: | |
f0fb825a EG |
6234 | wc->masks.vlans[0].tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
6235 | if (flow->vlans[0].tci & htons(VLAN_CFI) || | |
ca287d20 | 6236 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { |
f0fb825a EG |
6237 | if (!flow->vlans[0].tpid) { |
6238 | flow->vlans[0].tpid = htons(ETH_TYPE_VLAN); | |
6239 | } | |
6240 | flow->vlans[0].tci &= ~htons(VLAN_VID_MASK); | |
6241 | flow->vlans[0].tci |= | |
6242 | (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | | |
6243 | htons(VLAN_CFI)); | |
ca287d20 | 6244 | } |
9583bc14 EJ |
6245 | break; |
6246 | ||
6247 | case OFPACT_SET_VLAN_PCP: | |
f0fb825a EG |
6248 | wc->masks.vlans[0].tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
6249 | if (flow->vlans[0].tci & htons(VLAN_CFI) || | |
ca287d20 | 6250 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { |
f0fb825a EG |
6251 | if (!flow->vlans[0].tpid) { |
6252 | flow->vlans[0].tpid = htons(ETH_TYPE_VLAN); | |
6253 | } | |
6254 | flow->vlans[0].tci &= ~htons(VLAN_PCP_MASK); | |
6255 | flow->vlans[0].tci |= | |
6256 | htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
6257 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
ca287d20 | 6258 | } |
9583bc14 EJ |
6259 | break; |
6260 | ||
6261 | case OFPACT_STRIP_VLAN: | |
f0fb825a | 6262 | flow_pop_vlan(flow, wc); |
9583bc14 EJ |
6263 | break; |
6264 | ||
6265 | case OFPACT_PUSH_VLAN: | |
f0fb825a EG |
6266 | flow_push_vlan_uninit(flow, wc); |
6267 | flow->vlans[0].tpid = ofpact_get_PUSH_VLAN(a)->ethertype; | |
6268 | flow->vlans[0].tci = htons(VLAN_CFI); | |
9583bc14 EJ |
6269 | break; |
6270 | ||
6271 | case OFPACT_SET_ETH_SRC: | |
74ff3298 JR |
6272 | WC_MASK_FIELD(wc, dl_src); |
6273 | flow->dl_src = ofpact_get_SET_ETH_SRC(a)->mac; | |
9583bc14 EJ |
6274 | break; |
6275 | ||
6276 | case OFPACT_SET_ETH_DST: | |
74ff3298 JR |
6277 | WC_MASK_FIELD(wc, dl_dst); |
6278 | flow->dl_dst = ofpact_get_SET_ETH_DST(a)->mac; | |
9583bc14 EJ |
6279 | break; |
6280 | ||
6281 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 6282 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 6283 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 6284 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
6285 | } |
6286 | break; | |
6287 | ||
6288 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 6289 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 6290 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 6291 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
6292 | } |
6293 | break; | |
6294 | ||
04f01c24 BP |
6295 | case OFPACT_SET_IP_DSCP: |
6296 | if (is_ip_any(flow)) { | |
f47ea021 | 6297 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 6298 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 6299 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
6300 | } |
6301 | break; | |
6302 | ||
ff14eb7a JR |
6303 | case OFPACT_SET_IP_ECN: |
6304 | if (is_ip_any(flow)) { | |
6305 | wc->masks.nw_tos |= IP_ECN_MASK; | |
6306 | flow->nw_tos &= ~IP_ECN_MASK; | |
6307 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
6308 | } | |
6309 | break; | |
6310 | ||
0c20dbe4 JR |
6311 | case OFPACT_SET_IP_TTL: |
6312 | if (is_ip_any(flow)) { | |
6313 | wc->masks.nw_ttl = 0xff; | |
6314 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
6315 | } | |
6316 | break; | |
6317 | ||
9583bc14 | 6318 | case OFPACT_SET_L4_SRC_PORT: |
b8778a0d | 6319 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
6320 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
6321 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 6322 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
6323 | } |
6324 | break; | |
6325 | ||
6326 | case OFPACT_SET_L4_DST_PORT: | |
b8778a0d | 6327 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
6328 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
6329 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 6330 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
6331 | } |
6332 | break; | |
6333 | ||
6334 | case OFPACT_RESUBMIT: | |
8bf009bf JR |
6335 | /* Freezing complicates resubmit. Some action in the flow |
6336 | * entry found by resubmit might trigger freezing. If that | |
6337 | * happens, then we do not want to execute the resubmit again after | |
6338 | * during thawing, so we want to skip back to the head of the loop | |
6339 | * to avoid that, only adding any actions that follow the resubmit | |
6340 | * to the frozen actions. | |
6b1c5734 | 6341 | */ |
9583bc14 | 6342 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); |
6b1c5734 | 6343 | continue; |
9583bc14 EJ |
6344 | |
6345 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 6346 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
6347 | break; |
6348 | ||
6349 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
6350 | memset(&wc->masks.skb_priority, 0xff, |
6351 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
6352 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
6353 | break; | |
6354 | ||
6355 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
6356 | memset(&wc->masks.skb_priority, 0xff, |
6357 | sizeof wc->masks.skb_priority); | |
2d9b49dd BP |
6358 | if (flow->skb_priority != ctx->orig_skb_priority) { |
6359 | flow->skb_priority = ctx->orig_skb_priority; | |
6360 | xlate_report(ctx, OFT_DETAIL, "queue = %#"PRIx32, | |
6361 | flow->skb_priority); | |
6362 | } | |
9583bc14 EJ |
6363 | break; |
6364 | ||
6365 | case OFPACT_REG_MOVE: | |
2d9b49dd | 6366 | xlate_ofpact_reg_move(ctx, ofpact_get_REG_MOVE(a)); |
9583bc14 EJ |
6367 | break; |
6368 | ||
b2dd70be JR |
6369 | case OFPACT_SET_FIELD: |
6370 | set_field = ofpact_get_SET_FIELD(a); | |
6371 | mf = set_field->field; | |
b2dd70be | 6372 | |
aff49b8c JR |
6373 | /* Set the field only if the packet actually has it. */ |
6374 | if (mf_are_prereqs_ok(mf, flow, wc)) { | |
128684a6 JR |
6375 | mf_mask_field_masked(mf, ofpact_set_field_mask(set_field), wc); |
6376 | mf_set_flow_value_masked(mf, set_field->value, | |
6377 | ofpact_set_field_mask(set_field), | |
6378 | flow); | |
2d9b49dd BP |
6379 | } else { |
6380 | xlate_report(ctx, OFT_WARN, | |
6381 | "unmet prerequisites for %s, set_field ignored", | |
6382 | mf->name); | |
6383 | ||
b8778a0d | 6384 | } |
b2dd70be JR |
6385 | break; |
6386 | ||
9583bc14 | 6387 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
6388 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
6389 | &ctx->stack); | |
9583bc14 EJ |
6390 | break; |
6391 | ||
6392 | case OFPACT_STACK_POP: | |
2d9b49dd | 6393 | xlate_ofpact_stack_pop(ctx, ofpact_get_STACK_POP(a)); |
9583bc14 EJ |
6394 | break; |
6395 | ||
6396 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 6397 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
6398 | break; |
6399 | ||
6400 | case OFPACT_POP_MPLS: | |
8bfd0fda | 6401 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
6402 | break; |
6403 | ||
097d4939 | 6404 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
6405 | compose_set_mpls_label_action( |
6406 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 6407 | break; |
097d4939 JR |
6408 | |
6409 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 6410 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
6411 | break; |
6412 | ||
9583bc14 | 6413 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 6414 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
6415 | break; |
6416 | ||
6417 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 6418 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 6419 | return; |
9583bc14 EJ |
6420 | } |
6421 | break; | |
6422 | ||
6423 | case OFPACT_DEC_TTL: | |
f74e7df7 | 6424 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 6425 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 6426 | return; |
9583bc14 EJ |
6427 | } |
6428 | break; | |
6429 | ||
6430 | case OFPACT_NOTE: | |
6431 | /* Nothing to do. */ | |
6432 | break; | |
6433 | ||
6434 | case OFPACT_MULTIPATH: | |
33bf9176 | 6435 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
2d9b49dd | 6436 | xlate_report_subfield(ctx, &ofpact_get_MULTIPATH(a)->dst); |
9583bc14 EJ |
6437 | break; |
6438 | ||
6439 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
6440 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
6441 | break; | |
6442 | ||
6443 | case OFPACT_OUTPUT_REG: | |
6444 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
6445 | break; | |
6446 | ||
aaca4fe0 WT |
6447 | case OFPACT_OUTPUT_TRUNC: |
6448 | xlate_output_trunc_action(ctx, ofpact_get_OUTPUT_TRUNC(a)->port, | |
6449 | ofpact_get_OUTPUT_TRUNC(a)->max_len); | |
6450 | break; | |
6451 | ||
9583bc14 EJ |
6452 | case OFPACT_LEARN: |
6453 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
6454 | break; | |
6455 | ||
2d9b49dd | 6456 | case OFPACT_CONJUNCTION: |
afc3987b BP |
6457 | /* A flow with a "conjunction" action represents part of a special |
6458 | * kind of "set membership match". Such a flow should not actually | |
6459 | * get executed, but it could via, say, a "packet-out", even though | |
6460 | * that wouldn't be useful. Log it to help debugging. */ | |
2d9b49dd | 6461 | xlate_report_error(ctx, "executing no-op conjunction action"); |
18080541 BP |
6462 | break; |
6463 | ||
9583bc14 EJ |
6464 | case OFPACT_EXIT: |
6465 | ctx->exit = true; | |
6466 | break; | |
6467 | ||
2d9b49dd BP |
6468 | case OFPACT_UNROLL_XLATE: |
6469 | xlate_ofpact_unroll_xlate(ctx, ofpact_get_UNROLL_XLATE(a)); | |
e672ff9b | 6470 | break; |
2d9b49dd | 6471 | |
9583bc14 | 6472 | case OFPACT_FIN_TIMEOUT: |
33bf9176 | 6473 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
6474 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); |
6475 | break; | |
6476 | ||
6477 | case OFPACT_CLEAR_ACTIONS: | |
2d9b49dd | 6478 | xlate_report_action_set(ctx, "was"); |
7fdb60a7 | 6479 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
6480 | ctx->xin->flow.actset_output = OFPP_UNSET; |
6481 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
6482 | break; |
6483 | ||
6484 | case OFPACT_WRITE_ACTIONS: | |
7e7e8dbb | 6485 | xlate_write_actions(ctx, ofpact_get_WRITE_ACTIONS(a)); |
2d9b49dd | 6486 | xlate_report_action_set(ctx, "is"); |
9583bc14 EJ |
6487 | break; |
6488 | ||
6489 | case OFPACT_WRITE_METADATA: | |
6490 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
6491 | flow->metadata &= ~metadata->mask; |
6492 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
6493 | break; |
6494 | ||
638a19b0 | 6495 | case OFPACT_METER: |
076caa2f | 6496 | xlate_meter_action(ctx, ofpact_get_METER(a)); |
638a19b0 JR |
6497 | break; |
6498 | ||
9583bc14 | 6499 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 6500 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 6501 | |
9167fc1a JR |
6502 | ovs_assert(ctx->table_id < ogt->table_id); |
6503 | ||
4468099e | 6504 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2cd20955 | 6505 | ogt->table_id, true, true, false); |
9583bc14 EJ |
6506 | break; |
6507 | } | |
6508 | ||
6509 | case OFPACT_SAMPLE: | |
6510 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
6511 | break; | |
d4abaff5 | 6512 | |
7ae62a67 | 6513 | case OFPACT_CLONE: |
eee69393 | 6514 | compose_clone(ctx, ofpact_get_CLONE(a)); |
7ae62a67 WT |
6515 | break; |
6516 | ||
f839892a JS |
6517 | case OFPACT_ENCAP: |
6518 | xlate_generic_encap_action(ctx, ofpact_get_ENCAP(a)); | |
6519 | break; | |
6520 | ||
6521 | case OFPACT_DECAP: { | |
6522 | bool recirc_needed = | |
6523 | xlate_generic_decap_action(ctx, ofpact_get_DECAP(a)); | |
6524 | if (!ctx->error && recirc_needed) { | |
6525 | /* Recirculate for parsing of inner packet. */ | |
6526 | ctx_trigger_freeze(ctx); | |
6527 | /* Then continue with next action. */ | |
6528 | a = ofpact_next(a); | |
6529 | } | |
6530 | break; | |
6531 | } | |
6532 | ||
07659514 | 6533 | case OFPACT_CT: |
07659514 JS |
6534 | compose_conntrack_action(ctx, ofpact_get_CT(a)); |
6535 | break; | |
6536 | ||
72fe7578 BP |
6537 | case OFPACT_CT_CLEAR: |
6538 | clear_conntrack(ctx); | |
6539 | break; | |
6540 | ||
9ac0aada JR |
6541 | case OFPACT_NAT: |
6542 | /* This will be processed by compose_conntrack_action(). */ | |
6543 | ctx->ct_nat_action = ofpact_get_NAT(a); | |
6544 | break; | |
6545 | ||
d4abaff5 | 6546 | case OFPACT_DEBUG_RECIRC: |
1d361a81 | 6547 | ctx_trigger_freeze(ctx); |
d4abaff5 BP |
6548 | a = ofpact_next(a); |
6549 | break; | |
9583bc14 | 6550 | } |
1d741d6d JR |
6551 | |
6552 | /* Check if need to store this and the remaining actions for later | |
6553 | * execution. */ | |
1d361a81 BP |
6554 | if (!ctx->error && ctx->exit && ctx_first_frozen_action(ctx)) { |
6555 | freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), ctx); | |
1d741d6d JR |
6556 | break; |
6557 | } | |
9583bc14 | 6558 | } |
9583bc14 EJ |
6559 | } |
6560 | ||
6561 | void | |
6562 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
1f4a8933 JR |
6563 | ovs_version_t version, const struct flow *flow, |
6564 | ofp_port_t in_port, struct rule_dpif *rule, uint16_t tcp_flags, | |
1520ef4f BP |
6565 | const struct dp_packet *packet, struct flow_wildcards *wc, |
6566 | struct ofpbuf *odp_actions) | |
9583bc14 EJ |
6567 | { |
6568 | xin->ofproto = ofproto; | |
1f4a8933 | 6569 | xin->tables_version = version; |
9583bc14 | 6570 | xin->flow = *flow; |
8d8ab6c2 | 6571 | xin->upcall_flow = flow; |
cc377352 | 6572 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 6573 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 | 6574 | xin->packet = packet; |
df70a773 | 6575 | xin->allow_side_effects = packet != NULL; |
9583bc14 | 6576 | xin->rule = rule; |
b256dc52 | 6577 | xin->xcache = NULL; |
9583bc14 EJ |
6578 | xin->ofpacts = NULL; |
6579 | xin->ofpacts_len = 0; | |
6580 | xin->tcp_flags = tcp_flags; | |
2d9b49dd | 6581 | xin->trace = NULL; |
9583bc14 | 6582 | xin->resubmit_stats = NULL; |
790c5d26 | 6583 | xin->depth = 0; |
cdd42eda | 6584 | xin->resubmits = 0; |
49a73e0c | 6585 | xin->wc = wc; |
1520ef4f | 6586 | xin->odp_actions = odp_actions; |
331c07ac | 6587 | xin->in_packet_out = false; |
e6bc8e74 | 6588 | xin->recirc_queue = NULL; |
e672ff9b JR |
6589 | |
6590 | /* Do recirc lookup. */ | |
1d361a81 | 6591 | xin->frozen_state = NULL; |
29b1ea3f BP |
6592 | if (flow->recirc_id) { |
6593 | const struct recirc_id_node *node | |
6594 | = recirc_id_node_find(flow->recirc_id); | |
6595 | if (node) { | |
1d361a81 | 6596 | xin->frozen_state = &node->state; |
29b1ea3f BP |
6597 | } |
6598 | } | |
9583bc14 EJ |
6599 | } |
6600 | ||
6601 | void | |
6602 | xlate_out_uninit(struct xlate_out *xout) | |
6603 | { | |
e672ff9b | 6604 | if (xout) { |
fbf5d6ec | 6605 | recirc_refs_unref(&xout->recircs); |
9583bc14 EJ |
6606 | } |
6607 | } | |
9583bc14 | 6608 | \f |
55954f6e EJ |
6609 | static struct skb_priority_to_dscp * |
6610 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
6611 | { | |
6612 | struct skb_priority_to_dscp *pdscp; | |
6613 | uint32_t hash; | |
6614 | ||
6615 | hash = hash_int(skb_priority, 0); | |
6616 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
6617 | if (pdscp->skb_priority == skb_priority) { | |
6618 | return pdscp; | |
6619 | } | |
6620 | } | |
6621 | return NULL; | |
6622 | } | |
6623 | ||
6624 | static bool | |
6625 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
6626 | uint8_t *dscp) | |
6627 | { | |
6628 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
6629 | *dscp = pdscp ? pdscp->dscp : 0; | |
6630 | return pdscp != NULL; | |
6631 | } | |
6632 | ||
16194afd DDP |
6633 | static size_t |
6634 | count_skb_priorities(const struct xport *xport) | |
6635 | { | |
6636 | return hmap_count(&xport->skb_priorities); | |
6637 | } | |
6638 | ||
55954f6e EJ |
6639 | static void |
6640 | clear_skb_priorities(struct xport *xport) | |
6641 | { | |
4ec3d7c7 | 6642 | struct skb_priority_to_dscp *pdscp; |
55954f6e | 6643 | |
4ec3d7c7 | 6644 | HMAP_FOR_EACH_POP (pdscp, hmap_node, &xport->skb_priorities) { |
55954f6e EJ |
6645 | free(pdscp); |
6646 | } | |
6647 | } | |
6648 | ||
ce4a6b76 BP |
6649 | static bool |
6650 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
6651 | { | |
46c88433 | 6652 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
6653 | const struct nlattr *a; |
6654 | unsigned int left; | |
6655 | ||
1520ef4f BP |
6656 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data, |
6657 | ctx->odp_actions->size) { | |
ce4a6b76 BP |
6658 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
6659 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
6660 | return true; | |
6661 | } | |
6662 | } | |
6663 | return false; | |
6664 | } | |
9583bc14 | 6665 | |
5e2a6702 | 6666 | #if defined(__linux__) |
7d031d7e BP |
6667 | /* Returns the maximum number of packets that the Linux kernel is willing to |
6668 | * queue up internally to certain kinds of software-implemented ports, or the | |
6669 | * default (and rarely modified) value if it cannot be determined. */ | |
6670 | static int | |
6671 | netdev_max_backlog(void) | |
6672 | { | |
6673 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
6674 | static int max_backlog = 1000; /* The normal default value. */ | |
6675 | ||
6676 | if (ovsthread_once_start(&once)) { | |
6677 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
6678 | FILE *stream; | |
6679 | int n; | |
6680 | ||
6681 | stream = fopen(filename, "r"); | |
6682 | if (!stream) { | |
120c348f | 6683 | VLOG_INFO("%s: open failed (%s)", filename, ovs_strerror(errno)); |
7d031d7e BP |
6684 | } else { |
6685 | if (fscanf(stream, "%d", &n) != 1) { | |
6686 | VLOG_WARN("%s: read error", filename); | |
6687 | } else if (n <= 100) { | |
6688 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
6689 | } else { | |
6690 | max_backlog = n; | |
6691 | } | |
6692 | fclose(stream); | |
6693 | } | |
6694 | ovsthread_once_done(&once); | |
6695 | ||
6696 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
6697 | } | |
6698 | ||
6699 | return max_backlog; | |
6700 | } | |
6701 | ||
6702 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
6703 | * 'odp_actions'. */ | |
6704 | static int | |
6705 | count_output_actions(const struct ofpbuf *odp_actions) | |
6706 | { | |
6707 | const struct nlattr *a; | |
6708 | size_t left; | |
6709 | int n = 0; | |
6710 | ||
6fd6ed71 | 6711 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
6712 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
6713 | n++; | |
6714 | } | |
6715 | } | |
6716 | return n; | |
6717 | } | |
5e2a6702 | 6718 | #endif /* defined(__linux__) */ |
7d031d7e BP |
6719 | |
6720 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
6721 | * can reliably handle in one go. On Linux, this is the value of the | |
6722 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
6723 | * packets that the kernel is willing to queue up for processing while the | |
6724 | * datapath is processing a set of actions. */ | |
6725 | static bool | |
5e2a6702 | 6726 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
6727 | { |
6728 | #ifdef __linux__ | |
6fd6ed71 | 6729 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
6730 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
6731 | #else | |
6732 | /* OSes other than Linux might have similar limits, but we don't know how | |
6733 | * to determine them.*/ | |
6734 | return false; | |
6735 | #endif | |
6736 | } | |
6737 | ||
234c3da9 BP |
6738 | static void |
6739 | xlate_wc_init(struct xlate_ctx *ctx) | |
6740 | { | |
6741 | flow_wildcards_init_catchall(ctx->wc); | |
6742 | ||
6743 | /* Some fields we consider to always be examined. */ | |
3d4b2e6e | 6744 | WC_MASK_FIELD(ctx->wc, packet_type); |
5e2e998a | 6745 | WC_MASK_FIELD(ctx->wc, in_port); |
3d4b2e6e JS |
6746 | if (is_ethernet(&ctx->xin->flow, NULL)) { |
6747 | WC_MASK_FIELD(ctx->wc, dl_type); | |
6748 | } | |
234c3da9 | 6749 | if (is_ip_any(&ctx->xin->flow)) { |
5e2e998a | 6750 | WC_MASK_FIELD_MASK(ctx->wc, nw_frag, FLOW_NW_FRAG_MASK); |
234c3da9 BP |
6751 | } |
6752 | ||
6753 | if (ctx->xbridge->support.odp.recirc) { | |
6754 | /* Always exactly match recirc_id when datapath supports | |
6755 | * recirculation. */ | |
5e2e998a | 6756 | WC_MASK_FIELD(ctx->wc, recirc_id); |
234c3da9 BP |
6757 | } |
6758 | ||
6759 | if (ctx->xbridge->netflow) { | |
6760 | netflow_mask_wc(&ctx->xin->flow, ctx->wc); | |
6761 | } | |
6762 | ||
6763 | tnl_wc_init(&ctx->xin->flow, ctx->wc); | |
6764 | } | |
6765 | ||
6766 | static void | |
6767 | xlate_wc_finish(struct xlate_ctx *ctx) | |
6768 | { | |
f0fb825a EG |
6769 | int i; |
6770 | ||
234c3da9 BP |
6771 | /* Clear the metadata and register wildcard masks, because we won't |
6772 | * use non-header fields as part of the cache. */ | |
6773 | flow_wildcards_clear_non_packet_fields(ctx->wc); | |
6774 | ||
f839892a | 6775 | /* Wildcard ethernet fields if the original packet type was not |
beb75a40 JS |
6776 | * Ethernet. */ |
6777 | if (ctx->xin->upcall_flow->packet_type != htonl(PT_ETH)) { | |
6778 | ctx->wc->masks.dl_dst = eth_addr_zero; | |
6779 | ctx->wc->masks.dl_src = eth_addr_zero; | |
3d4b2e6e | 6780 | ctx->wc->masks.dl_type = 0; |
beb75a40 JS |
6781 | } |
6782 | ||
234c3da9 BP |
6783 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow |
6784 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
6785 | * represent these fields. The datapath interface, on the other hand, | |
6786 | * represents them with just 8 bits each. This means that if the high | |
6787 | * 8 bits of the masks for these fields somehow become set, then they | |
6788 | * will get chopped off by a round trip through the datapath, and | |
6789 | * revalidation will spot that as an inconsistency and delete the flow. | |
6790 | * Avoid the problem here by making sure that only the low 8 bits of | |
6791 | * either field can be unwildcarded for ICMP. | |
6792 | */ | |
a75636c8 | 6793 | if (is_icmpv4(&ctx->xin->flow, NULL) || is_icmpv6(&ctx->xin->flow, NULL)) { |
234c3da9 BP |
6794 | ctx->wc->masks.tp_src &= htons(UINT8_MAX); |
6795 | ctx->wc->masks.tp_dst &= htons(UINT8_MAX); | |
6796 | } | |
6797 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ | |
f0fb825a EG |
6798 | for (i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { |
6799 | if (ctx->wc->masks.vlans[i].tci) { | |
6800 | ctx->wc->masks.vlans[i].tci |= htons(VLAN_CFI); | |
6801 | } | |
234c3da9 | 6802 | } |
4a7ab326 DDP |
6803 | |
6804 | /* The classifier might return masks that match on tp_src and tp_dst even | |
6805 | * for later fragments. This happens because there might be flows that | |
6806 | * match on tp_src or tp_dst without matching on the frag bits, because | |
6807 | * it is not a prerequisite for OpenFlow. Since it is a prerequisite for | |
6808 | * datapath flows and since tp_src and tp_dst are always going to be 0, | |
6809 | * wildcard the fields here. */ | |
6810 | if (ctx->xin->flow.nw_frag & FLOW_NW_FRAG_LATER) { | |
6811 | ctx->wc->masks.tp_src = 0; | |
6812 | ctx->wc->masks.tp_dst = 0; | |
6813 | } | |
234c3da9 BP |
6814 | } |
6815 | ||
e672ff9b JR |
6816 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
6817 | * 'xout'. | |
56450a41 | 6818 | * The caller must take responsibility for eventually freeing 'xout', with |
fff1b9c0 JR |
6819 | * xlate_out_uninit(). |
6820 | * Returns 'XLATE_OK' if translation was successful. In case of an error an | |
6821 | * empty set of actions will be returned in 'xin->odp_actions' (if non-NULL), | |
6822 | * so that most callers may ignore the return value and transparently install a | |
6823 | * drop flow when the translation fails. */ | |
6824 | enum xlate_error | |
84f0f298 | 6825 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) |
9583bc14 | 6826 | { |
e467ea42 BP |
6827 | *xout = (struct xlate_out) { |
6828 | .slow = 0, | |
fbf5d6ec | 6829 | .recircs = RECIRC_REFS_EMPTY_INITIALIZER, |
e467ea42 BP |
6830 | }; |
6831 | ||
84f0f298 | 6832 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
bb00fdef BP |
6833 | struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto); |
6834 | if (!xbridge) { | |
fff1b9c0 | 6835 | return XLATE_BRIDGE_NOT_FOUND; |
bb00fdef BP |
6836 | } |
6837 | ||
33bf9176 BP |
6838 | struct flow *flow = &xin->flow; |
6839 | ||
84cf3c1f | 6840 | uint8_t stack_stub[1024]; |
bb00fdef | 6841 | uint64_t action_set_stub[1024 / 8]; |
1d361a81 | 6842 | uint64_t frozen_actions_stub[1024 / 8]; |
1520ef4f BP |
6843 | uint64_t actions_stub[256 / 8]; |
6844 | struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub); | |
0d3239e8 | 6845 | struct flow paused_flow; |
bb00fdef BP |
6846 | struct xlate_ctx ctx = { |
6847 | .xin = xin, | |
6848 | .xout = xout, | |
6849 | .base_flow = *flow, | |
c2b878e0 | 6850 | .orig_tunnel_ipv6_dst = flow_tnl_dst(&flow->tunnel), |
bb00fdef BP |
6851 | .xbridge = xbridge, |
6852 | .stack = OFPBUF_STUB_INITIALIZER(stack_stub), | |
6853 | .rule = xin->rule, | |
c0e638aa BP |
6854 | .wc = (xin->wc |
6855 | ? xin->wc | |
f36efd90 | 6856 | : &(struct flow_wildcards) { .masks = { .dl_type = 0 } }), |
1520ef4f | 6857 | .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions, |
bb00fdef | 6858 | |
790c5d26 | 6859 | .depth = xin->depth, |
cdd42eda | 6860 | .resubmits = xin->resubmits, |
bb00fdef BP |
6861 | .in_group = false, |
6862 | .in_action_set = false, | |
331c07ac | 6863 | .in_packet_out = xin->in_packet_out, |
f839892a | 6864 | .pending_encap = false, |
1fc11c59 | 6865 | .encap_data = NULL, |
bb00fdef BP |
6866 | |
6867 | .table_id = 0, | |
6868 | .rule_cookie = OVS_BE64_MAX, | |
6869 | .orig_skb_priority = flow->skb_priority, | |
6870 | .sflow_n_outputs = 0, | |
6871 | .sflow_odp_port = 0, | |
2031ef97 | 6872 | .nf_output_iface = NF_OUT_DROP, |
bb00fdef | 6873 | .exit = false, |
fff1b9c0 | 6874 | .error = XLATE_OK, |
3d6151f3 | 6875 | .mirrors = 0, |
bb00fdef | 6876 | |
1d361a81 | 6877 | .freezing = false, |
53cc166a | 6878 | .recirc_update_dp_hash = false, |
1d361a81 | 6879 | .frozen_actions = OFPBUF_STUB_INITIALIZER(frozen_actions_stub), |
77ab5fd2 | 6880 | .pause = NULL, |
0d3239e8 | 6881 | .paused_flow = &paused_flow, |
bb00fdef | 6882 | |
e12ec36b | 6883 | .was_mpls = false, |
07659514 | 6884 | .conntracked = false, |
bb00fdef | 6885 | |
9ac0aada JR |
6886 | .ct_nat_action = NULL, |
6887 | ||
bb00fdef BP |
6888 | .action_set_has_group = false, |
6889 | .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub), | |
6890 | }; | |
865ca6cf BP |
6891 | |
6892 | /* 'base_flow' reflects the packet as it came in, but we need it to reflect | |
42deb67d PS |
6893 | * the packet as the datapath will treat it for output actions. Our |
6894 | * datapath doesn't retain tunneling information without us re-setting | |
6895 | * it, so clear the tunnel data. | |
865ca6cf | 6896 | */ |
42deb67d | 6897 | |
bb00fdef | 6898 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
865ca6cf | 6899 | |
1520ef4f | 6900 | ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE); |
c0e638aa | 6901 | xlate_wc_init(&ctx); |
bb00fdef | 6902 | |
46c88433 | 6903 | COVERAGE_INC(xlate_actions); |
9583bc14 | 6904 | |
2d9b49dd BP |
6905 | xin->trace = xlate_report(&ctx, OFT_BRIDGE, "bridge(\"%s\")", |
6906 | xbridge->name); | |
1d361a81 BP |
6907 | if (xin->frozen_state) { |
6908 | const struct frozen_state *state = xin->frozen_state; | |
e672ff9b | 6909 | |
2d9b49dd BP |
6910 | struct ovs_list *old_trace = xin->trace; |
6911 | xin->trace = xlate_report(&ctx, OFT_THAW, "thaw"); | |
d6bef3cc | 6912 | |
e672ff9b | 6913 | if (xin->ofpacts_len > 0 || ctx.rule) { |
2d9b49dd BP |
6914 | xlate_report_error(&ctx, "Recirculation conflict (%s)!", |
6915 | xin->ofpacts_len ? "actions" : "rule"); | |
fff1b9c0 | 6916 | ctx.error = XLATE_RECIRCULATION_CONFLICT; |
1520ef4f | 6917 | goto exit; |
e672ff9b JR |
6918 | } |
6919 | ||
6920 | /* Set the bridge for post-recirculation processing if needed. */ | |
07a3cd5c | 6921 | if (!uuid_equals(&ctx.xbridge->ofproto->uuid, &state->ofproto_uuid)) { |
2082425c | 6922 | const struct xbridge *new_bridge |
290835f9 | 6923 | = xbridge_lookup_by_uuid(xcfg, &state->ofproto_uuid); |
e672ff9b JR |
6924 | |
6925 | if (OVS_UNLIKELY(!new_bridge)) { | |
6926 | /* Drop the packet if the bridge cannot be found. */ | |
2d9b49dd | 6927 | xlate_report_error(&ctx, "Frozen bridge no longer exists."); |
fff1b9c0 | 6928 | ctx.error = XLATE_BRIDGE_NOT_FOUND; |
2d9b49dd | 6929 | xin->trace = old_trace; |
1520ef4f | 6930 | goto exit; |
e672ff9b JR |
6931 | } |
6932 | ctx.xbridge = new_bridge; | |
1f4a8933 JR |
6933 | /* The bridge is now known so obtain its table version. */ |
6934 | ctx.xin->tables_version | |
6935 | = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
e672ff9b JR |
6936 | } |
6937 | ||
1d361a81 BP |
6938 | /* Set the thawed table id. Note: A table lookup is done only if there |
6939 | * are no frozen actions. */ | |
2082425c | 6940 | ctx.table_id = state->table_id; |
2d9b49dd BP |
6941 | xlate_report(&ctx, OFT_THAW, |
6942 | "Resuming from table %"PRIu8, ctx.table_id); | |
e672ff9b | 6943 | |
40b0fbd3 | 6944 | ctx.conntracked = state->conntracked; |
07659514 | 6945 | if (!state->conntracked) { |
72fe7578 | 6946 | clear_conntrack(&ctx); |
07659514 JS |
6947 | } |
6948 | ||
e672ff9b | 6949 | /* Restore pipeline metadata. May change flow's in_port and other |
1d361a81 BP |
6950 | * metadata to the values that existed when freezing was triggered. */ |
6951 | frozen_metadata_to_flow(&state->metadata, flow); | |
e672ff9b JR |
6952 | |
6953 | /* Restore stack, if any. */ | |
2082425c | 6954 | if (state->stack) { |
84cf3c1f | 6955 | ofpbuf_put(&ctx.stack, state->stack, state->stack_size); |
e672ff9b JR |
6956 | } |
6957 | ||
29bae541 BP |
6958 | /* Restore mirror state. */ |
6959 | ctx.mirrors = state->mirrors; | |
6960 | ||
e672ff9b | 6961 | /* Restore action set, if any. */ |
2082425c | 6962 | if (state->action_set_len) { |
2d9b49dd | 6963 | xlate_report_actions(&ctx, OFT_THAW, "Restoring action set", |
417509fa | 6964 | state->action_set, state->action_set_len); |
d6bef3cc | 6965 | |
7e7e8dbb BP |
6966 | flow->actset_output = OFPP_UNSET; |
6967 | xlate_write_actions__(&ctx, state->action_set, | |
6968 | state->action_set_len); | |
e672ff9b JR |
6969 | } |
6970 | ||
1d361a81 BP |
6971 | /* Restore frozen actions. If there are no actions, processing will |
6972 | * start with a lookup in the table set above. */ | |
417509fa BP |
6973 | xin->ofpacts = state->ofpacts; |
6974 | xin->ofpacts_len = state->ofpacts_len; | |
6975 | if (state->ofpacts_len) { | |
2d9b49dd | 6976 | xlate_report_actions(&ctx, OFT_THAW, "Restoring actions", |
d6bef3cc | 6977 | xin->ofpacts, xin->ofpacts_len); |
e672ff9b | 6978 | } |
e672ff9b | 6979 | |
2d9b49dd BP |
6980 | xin->trace = old_trace; |
6981 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
6982 | xlate_report_error(&ctx, | |
6983 | "Recirculation context not found for ID %"PRIx32, | |
6984 | flow->recirc_id); | |
fff1b9c0 | 6985 | ctx.error = XLATE_NO_RECIRCULATION_CONTEXT; |
1520ef4f | 6986 | goto exit; |
e672ff9b | 6987 | } |
9583bc14 | 6988 | |
8d8ab6c2 JG |
6989 | /* Tunnel metadata in udpif format must be normalized before translation. */ |
6990 | if (flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
5b09d9f7 MS |
6991 | const struct tun_table *tun_tab = ofproto_get_tun_tab( |
6992 | &ctx.xbridge->ofproto->up); | |
8d8ab6c2 JG |
6993 | int err; |
6994 | ||
6995 | err = tun_metadata_from_geneve_udpif(tun_tab, &xin->upcall_flow->tunnel, | |
6996 | &xin->upcall_flow->tunnel, | |
6997 | &flow->tunnel); | |
6998 | if (err) { | |
2d9b49dd | 6999 | xlate_report_error(&ctx, "Invalid Geneve tunnel metadata"); |
8d8ab6c2 JG |
7000 | ctx.error = XLATE_INVALID_TUNNEL_METADATA; |
7001 | goto exit; | |
7002 | } | |
7003 | } else if (!flow->tunnel.metadata.tab) { | |
7004 | /* If the original flow did not come in on a tunnel, then it won't have | |
7005 | * FLOW_TNL_F_UDPIF set. However, we still need to have a metadata | |
7006 | * table in case we generate tunnel actions. */ | |
5b09d9f7 MS |
7007 | flow->tunnel.metadata.tab = ofproto_get_tun_tab( |
7008 | &ctx.xbridge->ofproto->up); | |
8d8ab6c2 JG |
7009 | } |
7010 | ctx.wc->masks.tunnel.metadata.tab = flow->tunnel.metadata.tab; | |
7011 | ||
beb75a40 JS |
7012 | /* Get the proximate input port of the packet. (If xin->frozen_state, |
7013 | * flow->in_port is the ultimate input port of the packet.) */ | |
7014 | struct xport *in_port = get_ofp_port(xbridge, | |
7015 | ctx.base_flow.in_port.ofp_port); | |
7016 | ||
875ab130 BP |
7017 | if (flow->packet_type != htonl(PT_ETH) && in_port && |
7018 | in_port->pt_mode == NETDEV_PT_LEGACY_L3 && ctx.table_id == 0) { | |
beb75a40 JS |
7019 | /* Add dummy Ethernet header to non-L2 packet if it's coming from a |
7020 | * L3 port. So all packets will be L2 packets for lookup. | |
7021 | * The dl_type has already been set from the packet_type. */ | |
7022 | flow->packet_type = htonl(PT_ETH); | |
7023 | flow->dl_src = eth_addr_zero; | |
7024 | flow->dl_dst = eth_addr_zero; | |
f839892a | 7025 | ctx.pending_encap = true; |
beb75a40 JS |
7026 | } |
7027 | ||
10c44245 | 7028 | if (!xin->ofpacts && !ctx.rule) { |
b2e89cc9 | 7029 | ctx.rule = rule_dpif_lookup_from_table( |
1f4a8933 | 7030 | ctx.xbridge->ofproto, ctx.xin->tables_version, flow, ctx.wc, |
1e1e1d19 | 7031 | ctx.xin->resubmit_stats, &ctx.table_id, |
a027899e | 7032 | flow->in_port.ofp_port, true, true, ctx.xin->xcache); |
10c44245 | 7033 | if (ctx.xin->resubmit_stats) { |
b2e89cc9 | 7034 | rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats); |
10c44245 | 7035 | } |
b256dc52 JS |
7036 | if (ctx.xin->xcache) { |
7037 | struct xc_entry *entry; | |
7038 | ||
7039 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
901a517e | 7040 | entry->rule = ctx.rule; |
07a3cd5c | 7041 | ofproto_rule_ref(&ctx.rule->up); |
b256dc52 | 7042 | } |
a8c31348 | 7043 | |
2d9b49dd | 7044 | xlate_report_table(&ctx, ctx.rule, ctx.table_id); |
10c44245 | 7045 | } |
10c44245 | 7046 | |
1d361a81 BP |
7047 | /* Tunnel stats only for not-thawed packets. */ |
7048 | if (!xin->frozen_state && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
7049 | if (ctx.xin->resubmit_stats) { |
7050 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
7051 | if (in_port->bfd) { | |
7052 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
7053 | } | |
7054 | } | |
7055 | if (ctx.xin->xcache) { | |
7056 | struct xc_entry *entry; | |
7057 | ||
7058 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
901a517e JR |
7059 | entry->dev.rx = netdev_ref(in_port->netdev); |
7060 | entry->dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
7061 | } |
7062 | } | |
7063 | ||
1d361a81 | 7064 | if (!xin->frozen_state && process_special(&ctx, in_port)) { |
bef1403e BP |
7065 | /* process_special() did all the processing for this packet. |
7066 | * | |
1d361a81 BP |
7067 | * We do not perform special processing on thawed packets, since that |
7068 | * was done before they were frozen and should not be redone. */ | |
bef1403e BP |
7069 | } else if (in_port && in_port->xbundle |
7070 | && xbundle_mirror_out(xbridge, in_port->xbundle)) { | |
2d9b49dd BP |
7071 | xlate_report_error(&ctx, "dropping packet received on port " |
7072 | "%s, which is reserved exclusively for mirroring", | |
7073 | in_port->xbundle->name); | |
bef1403e | 7074 | } else { |
1d361a81 | 7075 | /* Sampling is done on initial reception; don't redo after thawing. */ |
a6092018 | 7076 | unsigned int user_cookie_offset = 0; |
1d361a81 | 7077 | if (!xin->frozen_state) { |
a6092018 BP |
7078 | user_cookie_offset = compose_sflow_action(&ctx); |
7079 | compose_ipfix_action(&ctx, ODPP_NONE); | |
e672ff9b | 7080 | } |
0731abc5 | 7081 | size_t sample_actions_len = ctx.odp_actions->size; |
9583bc14 | 7082 | |
234c3da9 BP |
7083 | if (tnl_process_ecn(flow) |
7084 | && (!in_port || may_receive(in_port, &ctx))) { | |
1806291d BP |
7085 | const struct ofpact *ofpacts; |
7086 | size_t ofpacts_len; | |
7087 | ||
7088 | if (xin->ofpacts) { | |
7089 | ofpacts = xin->ofpacts; | |
7090 | ofpacts_len = xin->ofpacts_len; | |
7091 | } else if (ctx.rule) { | |
7092 | const struct rule_actions *actions | |
07a3cd5c | 7093 | = rule_get_actions(&ctx.rule->up); |
1806291d BP |
7094 | ofpacts = actions->ofpacts; |
7095 | ofpacts_len = actions->ofpacts_len; | |
07a3cd5c | 7096 | ctx.rule_cookie = ctx.rule->up.flow_cookie; |
1806291d BP |
7097 | } else { |
7098 | OVS_NOT_REACHED(); | |
7099 | } | |
7100 | ||
7efbc3b7 | 7101 | mirror_ingress_packet(&ctx); |
9583bc14 | 7102 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
fff1b9c0 JR |
7103 | if (ctx.error) { |
7104 | goto exit; | |
7105 | } | |
9583bc14 EJ |
7106 | |
7107 | /* We've let OFPP_NORMAL and the learning action look at the | |
1d361a81 | 7108 | * packet, so cancel all actions and freezing if forwarding is |
8a5fb3b4 | 7109 | * disabled. */ |
9efd308e DV |
7110 | if (in_port && (!xport_stp_forward_state(in_port) || |
7111 | !xport_rstp_forward_state(in_port))) { | |
1520ef4f | 7112 | ctx.odp_actions->size = sample_actions_len; |
1d361a81 | 7113 | ctx_cancel_freeze(&ctx); |
8a5fb3b4 BP |
7114 | ofpbuf_clear(&ctx.action_set); |
7115 | } | |
7116 | ||
1d361a81 | 7117 | if (!ctx.freezing) { |
8a5fb3b4 | 7118 | xlate_action_set(&ctx); |
e672ff9b | 7119 | } |
1d361a81 | 7120 | if (ctx.freezing) { |
77ab5fd2 | 7121 | finish_freezing(&ctx); |
9583bc14 EJ |
7122 | } |
7123 | } | |
7124 | ||
e672ff9b | 7125 | /* Output only fully processed packets. */ |
1d361a81 | 7126 | if (!ctx.freezing |
e672ff9b | 7127 | && xbridge->has_in_band |
ce4a6b76 BP |
7128 | && in_band_must_output_to_local_port(flow) |
7129 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 7130 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 7131 | } |
aaa0fbae | 7132 | |
a6092018 BP |
7133 | if (user_cookie_offset) { |
7134 | fix_sflow_action(&ctx, user_cookie_offset); | |
e672ff9b | 7135 | } |
9583bc14 EJ |
7136 | } |
7137 | ||
1520ef4f | 7138 | if (nl_attr_oversized(ctx.odp_actions->size)) { |
542024c4 | 7139 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
7140 | * can't hand them to the kernel directly. dpif_execute() can execute |
7141 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
7142 | * prevent the flow from being installed. */ | |
7143 | COVERAGE_INC(xlate_actions_oversize); | |
7144 | ctx.xout->slow |= SLOW_ACTION; | |
1520ef4f | 7145 | } else if (too_many_output_actions(ctx.odp_actions)) { |
7d031d7e BP |
7146 | COVERAGE_INC(xlate_actions_too_many_output); |
7147 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
7148 | } |
7149 | ||
64fb5f82 JP |
7150 | /* Update NetFlow for non-frozen traffic. */ |
7151 | if (xbridge->netflow && !xin->frozen_state) { | |
1806291d BP |
7152 | if (ctx.xin->resubmit_stats) { |
7153 | netflow_flow_update(xbridge->netflow, flow, | |
2031ef97 | 7154 | ctx.nf_output_iface, |
1806291d BP |
7155 | ctx.xin->resubmit_stats); |
7156 | } | |
7157 | if (ctx.xin->xcache) { | |
7158 | struct xc_entry *entry; | |
b256dc52 | 7159 | |
1806291d | 7160 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); |
901a517e JR |
7161 | entry->nf.netflow = netflow_ref(xbridge->netflow); |
7162 | entry->nf.flow = xmemdup(flow, sizeof *flow); | |
7163 | entry->nf.iface = ctx.nf_output_iface; | |
d6fc5f57 EJ |
7164 | } |
7165 | } | |
7166 | ||
8d8ab6c2 JG |
7167 | /* Translate tunnel metadata masks to udpif format if necessary. */ |
7168 | if (xin->upcall_flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
7169 | if (ctx.wc->masks.tunnel.metadata.present.map) { | |
7170 | const struct flow_tnl *upcall_tnl = &xin->upcall_flow->tunnel; | |
7171 | struct geneve_opt opts[TLV_TOT_OPT_SIZE / | |
7172 | sizeof(struct geneve_opt)]; | |
7173 | ||
7174 | tun_metadata_to_geneve_udpif_mask(&flow->tunnel, | |
7175 | &ctx.wc->masks.tunnel, | |
7176 | upcall_tnl->metadata.opts.gnv, | |
7177 | upcall_tnl->metadata.present.len, | |
7178 | opts); | |
7179 | memset(&ctx.wc->masks.tunnel.metadata, 0, | |
7180 | sizeof ctx.wc->masks.tunnel.metadata); | |
7181 | memcpy(&ctx.wc->masks.tunnel.metadata.opts.gnv, opts, | |
7182 | upcall_tnl->metadata.present.len); | |
7183 | } | |
7184 | ctx.wc->masks.tunnel.metadata.present.len = 0xff; | |
7185 | ctx.wc->masks.tunnel.metadata.tab = NULL; | |
7186 | ctx.wc->masks.tunnel.flags |= FLOW_TNL_F_UDPIF; | |
7187 | } else if (!xin->upcall_flow->tunnel.metadata.tab) { | |
7188 | /* If we didn't have options in UDPIF format and didn't have an existing | |
7189 | * metadata table, then it means that there were no options at all when | |
7190 | * we started processing and any wildcards we picked up were from | |
7191 | * action generation. Without options on the incoming packet, wildcards | |
7192 | * aren't meaningful. To avoid them possibly getting misinterpreted, | |
7193 | * just clear everything. */ | |
7194 | if (ctx.wc->masks.tunnel.metadata.present.map) { | |
7195 | memset(&ctx.wc->masks.tunnel.metadata, 0, | |
7196 | sizeof ctx.wc->masks.tunnel.metadata); | |
7197 | } else { | |
7198 | ctx.wc->masks.tunnel.metadata.tab = NULL; | |
7199 | } | |
7200 | } | |
7201 | ||
c0e638aa | 7202 | xlate_wc_finish(&ctx); |
1520ef4f BP |
7203 | |
7204 | exit: | |
8d8ab6c2 JG |
7205 | /* Reset the table to what it was when we came in. If we only fetched |
7206 | * it locally, then it has no meaning outside of flow translation. */ | |
7207 | flow->tunnel.metadata.tab = xin->upcall_flow->tunnel.metadata.tab; | |
7208 | ||
1520ef4f BP |
7209 | ofpbuf_uninit(&ctx.stack); |
7210 | ofpbuf_uninit(&ctx.action_set); | |
1d361a81 | 7211 | ofpbuf_uninit(&ctx.frozen_actions); |
1520ef4f | 7212 | ofpbuf_uninit(&scratch_actions); |
1fc11c59 | 7213 | ofpbuf_delete(ctx.encap_data); |
fff1b9c0 JR |
7214 | |
7215 | /* Make sure we return a "drop flow" in case of an error. */ | |
7216 | if (ctx.error) { | |
7217 | xout->slow = 0; | |
7218 | if (xin->odp_actions) { | |
7219 | ofpbuf_clear(xin->odp_actions); | |
7220 | } | |
7221 | } | |
7222 | return ctx.error; | |
91d6cd12 AW |
7223 | } |
7224 | ||
77ab5fd2 BP |
7225 | enum ofperr |
7226 | xlate_resume(struct ofproto_dpif *ofproto, | |
7227 | const struct ofputil_packet_in_private *pin, | |
7228 | struct ofpbuf *odp_actions, | |
7229 | enum slow_path_reason *slow) | |
7230 | { | |
7231 | struct dp_packet packet; | |
4d617a87 BP |
7232 | dp_packet_use_const(&packet, pin->base.packet, |
7233 | pin->base.packet_len); | |
77ab5fd2 BP |
7234 | |
7235 | struct flow flow; | |
7236 | flow_extract(&packet, &flow); | |
7237 | ||
7238 | struct xlate_in xin; | |
1f4a8933 JR |
7239 | xlate_in_init(&xin, ofproto, ofproto_dpif_get_tables_version(ofproto), |
7240 | &flow, 0, NULL, ntohs(flow.tcp_flags), | |
77ab5fd2 BP |
7241 | &packet, NULL, odp_actions); |
7242 | ||
7243 | struct ofpact_note noop; | |
7244 | ofpact_init_NOTE(&noop); | |
7245 | noop.length = 0; | |
7246 | ||
7247 | bool any_actions = pin->actions_len > 0; | |
7248 | struct frozen_state state = { | |
7249 | .table_id = 0, /* Not the table where NXAST_PAUSE was executed. */ | |
7250 | .ofproto_uuid = pin->bridge, | |
7251 | .stack = pin->stack, | |
84cf3c1f | 7252 | .stack_size = pin->stack_size, |
77ab5fd2 BP |
7253 | .mirrors = pin->mirrors, |
7254 | .conntracked = pin->conntracked, | |
7255 | ||
7256 | /* When there are no actions, xlate_actions() will search the flow | |
7257 | * table. We don't want it to do that (we want it to resume), so | |
7258 | * supply a no-op action if there aren't any. | |
7259 | * | |
7260 | * (We can't necessarily avoid translating actions entirely if there | |
7261 | * aren't any actions, because there might be some finishing-up to do | |
7262 | * at the end of the pipeline, and we don't check for those | |
7263 | * conditions.) */ | |
7264 | .ofpacts = any_actions ? pin->actions : &noop.ofpact, | |
7265 | .ofpacts_len = any_actions ? pin->actions_len : sizeof noop, | |
7266 | ||
7267 | .action_set = pin->action_set, | |
7268 | .action_set_len = pin->action_set_len, | |
7269 | }; | |
7270 | frozen_metadata_from_flow(&state.metadata, | |
4d617a87 | 7271 | &pin->base.flow_metadata.flow); |
77ab5fd2 BP |
7272 | xin.frozen_state = &state; |
7273 | ||
7274 | struct xlate_out xout; | |
7275 | enum xlate_error error = xlate_actions(&xin, &xout); | |
7276 | *slow = xout.slow; | |
7277 | xlate_out_uninit(&xout); | |
7278 | ||
7279 | /* xlate_actions() can generate a number of errors, but only | |
7280 | * XLATE_BRIDGE_NOT_FOUND really stands out to me as one that we should be | |
7281 | * sure to report over OpenFlow. The others could come up in packet-outs | |
7282 | * or regular flow translation and I don't think that it's going to be too | |
7283 | * useful to report them to the controller. */ | |
7284 | return error == XLATE_BRIDGE_NOT_FOUND ? OFPERR_NXR_STALE : 0; | |
7285 | } | |
7286 | ||
2eb79142 JG |
7287 | /* Sends 'packet' out 'ofport'. If 'port' is a tunnel and that tunnel type |
7288 | * supports a notion of an OAM flag, sets it if 'oam' is true. | |
91d6cd12 AW |
7289 | * May modify 'packet'. |
7290 | * Returns 0 if successful, otherwise a positive errno value. */ | |
7291 | int | |
2eb79142 JG |
7292 | xlate_send_packet(const struct ofport_dpif *ofport, bool oam, |
7293 | struct dp_packet *packet) | |
91d6cd12 | 7294 | { |
84f0f298 | 7295 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 7296 | struct xport *xport; |
2eb79142 JG |
7297 | uint64_t ofpacts_stub[1024 / 8]; |
7298 | struct ofpbuf ofpacts; | |
91d6cd12 | 7299 | struct flow flow; |
91d6cd12 | 7300 | |
2eb79142 | 7301 | ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
91d6cd12 | 7302 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ |
cf62fa4c | 7303 | flow_extract(packet, &flow); |
b5e7e61a | 7304 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 7305 | |
84f0f298 | 7306 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 7307 | if (!xport) { |
02ea2703 | 7308 | return EINVAL; |
91d6cd12 | 7309 | } |
2eb79142 JG |
7310 | |
7311 | if (oam) { | |
71f21279 BP |
7312 | const ovs_be16 flag = htons(NX_TUN_FLAG_OAM); |
7313 | ofpact_put_set_field(&ofpacts, mf_from_id(MFF_TUN_FLAGS), | |
7314 | &flag, &flag); | |
2eb79142 JG |
7315 | } |
7316 | ||
7317 | ofpact_put_OUTPUT(&ofpacts)->port = xport->ofp_port; | |
e491a67a | 7318 | |
1f4a8933 JR |
7319 | /* Actions here are not referring to anything versionable (flow tables or |
7320 | * groups) so we don't need to worry about the version here. */ | |
7321 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, | |
7322 | OVS_VERSION_MAX, &flow, NULL, | |
2eb79142 | 7323 | ofpacts.data, ofpacts.size, packet); |
9583bc14 | 7324 | } |
b256dc52 | 7325 | |
901a517e | 7326 | void |
064799a1 JR |
7327 | xlate_mac_learning_update(const struct ofproto_dpif *ofproto, |
7328 | ofp_port_t in_port, struct eth_addr dl_src, | |
7329 | int vlan, bool is_grat_arp) | |
b256dc52 | 7330 | { |
84f0f298 | 7331 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
7332 | struct xbridge *xbridge; |
7333 | struct xbundle *xbundle; | |
b256dc52 | 7334 | |
84f0f298 | 7335 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
7336 | if (!xbridge) { |
7337 | return; | |
7338 | } | |
7339 | ||
2d9b49dd | 7340 | xbundle = lookup_input_bundle__(xbridge, in_port, NULL); |
b256dc52 JS |
7341 | if (!xbundle) { |
7342 | return; | |
7343 | } | |
7344 | ||
2d9b49dd | 7345 | update_learning_table__(xbridge, xbundle, dl_src, vlan, is_grat_arp); |
b256dc52 | 7346 | } |
bef503e8 | 7347 | |
88186383 AZ |
7348 | void |
7349 | xlate_set_support(const struct ofproto_dpif *ofproto, | |
7350 | const struct dpif_backer_support *support) | |
7351 | { | |
7352 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
7353 | struct xbridge *xbridge = xbridge_lookup(xcfg, ofproto); | |
7354 | ||
7355 | if (xbridge) { | |
7356 | xbridge->support = *support; | |
7357 | } | |
7358 | } |