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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" | |
58 | #include "openvswitch/vlog.h" | |
59 | #include "ovs-lldp.h" | |
a36de779 | 60 | #include "ovs-router.h" |
b598f214 BW |
61 | #include "packets.h" |
62 | #include "tnl-neigh-cache.h" | |
a36de779 | 63 | #include "tnl-ports.h" |
9583bc14 | 64 | #include "tunnel.h" |
ee89ea7b | 65 | #include "util.h" |
9583bc14 | 66 | |
46c88433 | 67 | COVERAGE_DEFINE(xlate_actions); |
0f032e95 | 68 | COVERAGE_DEFINE(xlate_actions_oversize); |
7d031d7e | 69 | COVERAGE_DEFINE(xlate_actions_too_many_output); |
9583bc14 EJ |
70 | |
71 | VLOG_DEFINE_THIS_MODULE(ofproto_dpif_xlate); | |
72 | ||
8a553e9a | 73 | /* Maximum depth of flow table recursion (due to resubmit actions) in a |
790c5d26 BP |
74 | * flow translation. |
75 | * | |
76 | * The goal of limiting the depth of resubmits is to ensure that flow | |
77 | * translation eventually terminates. Only resubmits to the same table or an | |
78 | * earlier table count against the maximum depth. This is because resubmits to | |
79 | * strictly monotonically increasing table IDs will eventually terminate, since | |
80 | * any OpenFlow switch has a finite number of tables. OpenFlow tables are most | |
81 | * commonly traversed in numerically increasing order, so this limit has little | |
82 | * effect on conventionally designed OpenFlow pipelines. | |
83 | * | |
84 | * Outputs to patch ports and to groups also count against the depth limit. */ | |
85 | #define MAX_DEPTH 64 | |
8a553e9a | 86 | |
98b07853 BP |
87 | /* Maximum number of resubmit actions in a flow translation, whether they are |
88 | * recursive or not. */ | |
790c5d26 | 89 | #define MAX_RESUBMITS (MAX_DEPTH * MAX_DEPTH) |
98b07853 | 90 | |
46c88433 EJ |
91 | struct xbridge { |
92 | struct hmap_node hmap_node; /* Node in global 'xbridges' map. */ | |
93 | struct ofproto_dpif *ofproto; /* Key in global 'xbridges' map. */ | |
94 | ||
ca6ba700 | 95 | struct ovs_list xbundles; /* Owned xbundles. */ |
46c88433 EJ |
96 | struct hmap xports; /* Indexed by ofp_port. */ |
97 | ||
98 | char *name; /* Name used in log messages. */ | |
89a8a7f0 | 99 | struct dpif *dpif; /* Datapath interface. */ |
46c88433 | 100 | struct mac_learning *ml; /* Mac learning handle. */ |
6d95c4e8 | 101 | struct mcast_snooping *ms; /* Multicast Snooping handle. */ |
46c88433 EJ |
102 | struct mbridge *mbridge; /* Mirroring. */ |
103 | struct dpif_sflow *sflow; /* SFlow handle, or null. */ | |
104 | struct dpif_ipfix *ipfix; /* Ipfix handle, or null. */ | |
ce3955be | 105 | struct netflow *netflow; /* Netflow handle, or null. */ |
9d189a50 | 106 | struct stp *stp; /* STP or null if disabled. */ |
9efd308e | 107 | struct rstp *rstp; /* RSTP or null if disabled. */ |
46c88433 | 108 | |
46c88433 EJ |
109 | bool has_in_band; /* Bridge has in band control? */ |
110 | bool forward_bpdu; /* Bridge forwards STP BPDUs? */ | |
4b97b70d | 111 | |
b440dd8c JS |
112 | /* Datapath feature support. */ |
113 | struct dpif_backer_support support; | |
46c88433 EJ |
114 | }; |
115 | ||
116 | struct xbundle { | |
117 | struct hmap_node hmap_node; /* In global 'xbundles' map. */ | |
118 | struct ofbundle *ofbundle; /* Key in global 'xbundles' map. */ | |
119 | ||
ca6ba700 | 120 | struct ovs_list list_node; /* In parent 'xbridges' list. */ |
46c88433 EJ |
121 | struct xbridge *xbridge; /* Parent xbridge. */ |
122 | ||
ca6ba700 | 123 | struct ovs_list xports; /* Contains "struct xport"s. */ |
46c88433 EJ |
124 | |
125 | char *name; /* Name used in log messages. */ | |
126 | struct bond *bond; /* Nonnull iff more than one port. */ | |
127 | struct lacp *lacp; /* LACP handle or null. */ | |
128 | ||
129 | enum port_vlan_mode vlan_mode; /* VLAN mode. */ | |
fed8962a EG |
130 | uint16_t qinq_ethtype; /* Ethertype of dot1q-tunnel interface |
131 | * either 0x8100 or 0x88a8. */ | |
46c88433 EJ |
132 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ |
133 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
134 | * NULL if all VLANs are trunked. */ | |
fed8962a EG |
135 | unsigned long *cvlans; /* Bitmap of allowed customer vlans, |
136 | * NULL if all VLANs are allowed */ | |
46c88433 EJ |
137 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ |
138 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
c005f976 | 139 | bool protected; /* Protected port mode */ |
46c88433 EJ |
140 | }; |
141 | ||
142 | struct xport { | |
143 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
144 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
145 | ||
146 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
147 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
148 | ||
149 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
150 | ||
ca6ba700 | 151 | struct ovs_list bundle_node; /* In parent xbundle (if it exists). */ |
46c88433 EJ |
152 | struct xbundle *xbundle; /* Parent xbundle or null. */ |
153 | ||
154 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
155 | ||
156 | struct xbridge *xbridge; /* Parent bridge. */ | |
157 | struct xport *peer; /* Patch port peer or null. */ | |
158 | ||
159 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 160 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 161 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 162 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 163 | |
55954f6e EJ |
164 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
165 | ||
46c88433 EJ |
166 | bool may_enable; /* May be enabled in bonds. */ |
167 | bool is_tunnel; /* Is a tunnel port. */ | |
168 | ||
169 | struct cfm *cfm; /* CFM handle or null. */ | |
170 | struct bfd *bfd; /* BFD handle or null. */ | |
0477baa9 | 171 | struct lldp *lldp; /* LLDP handle or null. */ |
46c88433 EJ |
172 | }; |
173 | ||
4d0acc70 EJ |
174 | struct xlate_ctx { |
175 | struct xlate_in *xin; | |
176 | struct xlate_out *xout; | |
177 | ||
46c88433 | 178 | const struct xbridge *xbridge; |
4d0acc70 EJ |
179 | |
180 | /* Flow at the last commit. */ | |
181 | struct flow base_flow; | |
182 | ||
183 | /* Tunnel IP destination address as received. This is stored separately | |
184 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
185 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
186 | * which might lead to an infinite loop. This could happen easily | |
187 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
188 | * actually set the tun_dst field. */ | |
e4d3706c | 189 | struct in6_addr orig_tunnel_ipv6_dst; |
4d0acc70 | 190 | |
84cf3c1f JR |
191 | /* Stack for the push and pop actions. See comment above nx_stack_push() |
192 | * in nx-match.c for info on how the stack is stored. */ | |
4d0acc70 EJ |
193 | struct ofpbuf stack; |
194 | ||
195 | /* The rule that we are currently translating, or NULL. */ | |
196 | struct rule_dpif *rule; | |
197 | ||
49a73e0c BP |
198 | /* Flow translation populates this with wildcards relevant in translation. |
199 | * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is | |
c0e638aa | 200 | * null, this is a pointer to a temporary buffer. */ |
49a73e0c BP |
201 | struct flow_wildcards *wc; |
202 | ||
1520ef4f BP |
203 | /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull, |
204 | * this is the same pointer. When 'xin->odp_actions' is null, this points | |
205 | * to a scratch ofpbuf. This allows code to add actions to | |
206 | * 'ctx->odp_actions' without worrying about whether the caller really | |
207 | * wants actions. */ | |
208 | struct ofpbuf *odp_actions; | |
209 | ||
790c5d26 BP |
210 | /* Statistics maintained by xlate_table_action(). |
211 | * | |
2d9b49dd | 212 | * These statistics limit the amount of work that a single flow |
790c5d26 BP |
213 | * translation can perform. The goal of the first of these, 'depth', is |
214 | * primarily to prevent translation from performing an infinite amount of | |
215 | * work. It counts the current depth of nested "resubmit"s (and a few | |
216 | * other activities); when a resubmit returns, it decreases. Resubmits to | |
217 | * tables in strictly monotonically increasing order don't contribute to | |
218 | * 'depth' because they cannot cause a flow translation to take an infinite | |
219 | * amount of time (because the number of tables is finite). Translation | |
220 | * aborts when 'depth' exceeds MAX_DEPTH. | |
221 | * | |
222 | * 'resubmits', on the other hand, prevents flow translation from | |
223 | * performing an extraordinarily large while still finite amount of work. | |
224 | * It counts the total number of resubmits (and a few other activities) | |
225 | * that have been executed. Returning from a resubmit does not affect this | |
226 | * counter. Thus, this limits the amount of work that a particular | |
227 | * translation can perform. Translation aborts when 'resubmits' exceeds | |
228 | * MAX_RESUBMITS (which is much larger than MAX_DEPTH). | |
229 | */ | |
790c5d26 | 230 | int depth; /* Current resubmit nesting depth. */ |
98b07853 | 231 | int resubmits; /* Total number of resubmits. */ |
5a070238 | 232 | bool in_group; /* Currently translating ofgroup, if true. */ |
029ca940 | 233 | bool in_action_set; /* Currently translating action_set, if true. */ |
331c07ac YHW |
234 | bool in_packet_out; /* Currently translating a packet_out msg, if |
235 | * true. */ | |
98b07853 | 236 | |
4d0acc70 | 237 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
8b1e5560 JR |
238 | ovs_be64 rule_cookie; /* Cookie of the rule being translated. */ |
239 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ | |
4d0acc70 | 240 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
4e022ec0 | 241 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
2031ef97 | 242 | ofp_port_t nf_output_iface; /* Output interface index for NetFlow. */ |
4d0acc70 | 243 | bool exit; /* No further actions should be processed. */ |
3d6151f3 | 244 | mirror_mask_t mirrors; /* Bitmap of associated mirrors. */ |
1356dbd1 | 245 | int mirror_snaplen; /* Max size of a mirror packet in byte. */ |
7fdb60a7 | 246 | |
1d361a81 BP |
247 | /* Freezing Translation |
248 | * ==================== | |
e672ff9b | 249 | * |
1d361a81 BP |
250 | * At some point during translation, the code may recognize the need to halt |
251 | * and checkpoint the translation in a way that it can be restarted again | |
252 | * later. We call the checkpointing process "freezing" and the restarting | |
253 | * process "thawing". | |
e672ff9b | 254 | * |
1d361a81 | 255 | * The use cases for freezing are: |
e672ff9b | 256 | * |
1d361a81 BP |
257 | * - "Recirculation", where the translation process discovers that it |
258 | * doesn't have enough information to complete translation without | |
259 | * actually executing the actions that have already been translated, | |
260 | * which provides the additionally needed information. In these | |
261 | * situations, translation freezes translation and assigns the frozen | |
262 | * data a unique "recirculation ID", which it associates with the data | |
263 | * in a table in userspace (see ofproto-dpif-rid.h). It also adds a | |
264 | * OVS_ACTION_ATTR_RECIRC action specifying that ID to the datapath | |
265 | * actions. When a packet hits that action, the datapath looks its | |
266 | * flow up again using the ID. If there's a miss, it comes back to | |
267 | * userspace, which find the recirculation table entry for the ID, | |
268 | * thaws the associated frozen data, and continues translation from | |
269 | * that point given the additional information that is now known. | |
e672ff9b | 270 | * |
1d361a81 BP |
271 | * The archetypal example is MPLS. As MPLS is implemented in |
272 | * OpenFlow, the protocol that follows the last MPLS label becomes | |
273 | * known only when that label is popped by an OpenFlow action. That | |
274 | * means that Open vSwitch can't extract the headers beyond the MPLS | |
275 | * labels until the pop action is executed. Thus, at that point | |
276 | * translation uses the recirculation process to extract the headers | |
277 | * beyond the MPLS labels. | |
e672ff9b | 278 | * |
1d361a81 BP |
279 | * (OVS also uses OVS_ACTION_ATTR_RECIRC to implement hashing for |
280 | * output to bonds. OVS pre-populates all the datapath flows for bond | |
281 | * output in the datapath, though, which means that the elaborate | |
282 | * process of coming back to userspace for a second round of | |
283 | * translation isn't needed, and so bonds don't follow the above | |
284 | * process.) | |
e672ff9b | 285 | * |
77ab5fd2 BP |
286 | * - "Continuation". A continuation is a way for an OpenFlow controller |
287 | * to interpose on a packet's traversal of the OpenFlow tables. When | |
288 | * the translation process encounters a "controller" action with the | |
289 | * "pause" flag, it freezes translation, serializes the frozen data, | |
290 | * and sends it to an OpenFlow controller. The controller then | |
291 | * examines and possibly modifies the frozen data and eventually sends | |
292 | * it back to the switch, which thaws it and continues translation. | |
e672ff9b | 293 | * |
1d361a81 BP |
294 | * The main problem of freezing translation is preserving state, so that |
295 | * when the translation is thawed later it resumes from where it left off, | |
296 | * without disruption. In particular, actions must be preserved as follows: | |
297 | * | |
298 | * - If we're freezing because an action needed more information, the | |
299 | * action that prompted it. | |
300 | * | |
301 | * - Any actions remaining to be translated within the current flow. | |
302 | * | |
303 | * - If translation was frozen within a NXAST_RESUBMIT, then any actions | |
304 | * following the resubmit action. Resubmit actions can be nested, so | |
305 | * this has to go all the way up the control stack. | |
e672ff9b JR |
306 | * |
307 | * - The OpenFlow 1.1+ action set. | |
308 | * | |
309 | * State that actions and flow table lookups can depend on, such as the | |
310 | * following, must also be preserved: | |
311 | * | |
312 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
313 | * | |
1d361a81 | 314 | * - The stack used by NXAST_STACK_PUSH and NXAST_STACK_POP actions. |
e672ff9b JR |
315 | * |
316 | * - The table ID and cookie of the flow being translated at each level | |
1d361a81 BP |
317 | * of the control stack, because these can become visible through |
318 | * OFPAT_CONTROLLER actions (and other ways). | |
e672ff9b JR |
319 | * |
320 | * Translation allows for the control of this state preservation via these | |
1d361a81 BP |
321 | * members. When a need to freeze translation is identified, the |
322 | * translation process: | |
e672ff9b | 323 | * |
1d361a81 | 324 | * 1. Sets 'freezing' to true. |
e672ff9b JR |
325 | * |
326 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
327 | * translation process. | |
328 | * | |
1d361a81 BP |
329 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'frozen_actions', and points |
330 | * frozen_actions.header to the action to make it easy to find it later. | |
331 | * This action holds the current table ID and cookie so that they can be | |
332 | * restored during a post-recirculation upcall translation. | |
e672ff9b JR |
333 | * |
334 | * 4. Adds the action that prompted recirculation and any actions following | |
1d361a81 | 335 | * it within the same flow to 'frozen_actions', so that they can be |
8a5fb3b4 | 336 | * executed during a post-recirculation upcall translation. |
e672ff9b JR |
337 | * |
338 | * 5. Returns. | |
339 | * | |
340 | * 6. The action that prompted recirculation might be nested in a stack of | |
341 | * nested "resubmit"s that have actions remaining. Each of these notices | |
1d361a81 BP |
342 | * that we're exiting and freezing and responds by adding more |
343 | * OFPACT_UNROLL_XLATE actions to 'frozen_actions', as necessary, | |
344 | * followed by any actions that were yet unprocessed. | |
e672ff9b | 345 | * |
1d361a81 BP |
346 | * If we're freezing because of recirculation, the caller generates a |
347 | * recirculation ID and associates all the state produced by this process | |
348 | * with it. For post-recirculation upcall translation, the caller passes it | |
349 | * back in for the new translation to execute. The process yielded a set of | |
350 | * ofpacts that can be translated directly, so it is not much of a special | |
351 | * case at that point. | |
e672ff9b | 352 | */ |
1d361a81 | 353 | bool freezing; |
53cc166a JR |
354 | bool recirc_update_dp_hash; /* Generated recirculation will be preceded |
355 | * by datapath HASH action to get an updated | |
356 | * dp_hash after recirculation. */ | |
357 | uint32_t dp_hash_alg; | |
358 | uint32_t dp_hash_basis; | |
1d361a81 | 359 | struct ofpbuf frozen_actions; |
77ab5fd2 | 360 | const struct ofpact_controller *pause; |
e672ff9b | 361 | |
e12ec36b SH |
362 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
363 | * This is a trigger for recirculation in cases where translating an action | |
364 | * or looking up a flow requires access to the fields of the packet after | |
365 | * the MPLS label stack that was originally present. */ | |
366 | bool was_mpls; | |
367 | ||
07659514 JS |
368 | /* True if conntrack has been performed on this packet during processing |
369 | * on the current bridge. This is used to determine whether conntrack | |
1d361a81 | 370 | * state from the datapath should be honored after thawing. */ |
07659514 JS |
371 | bool conntracked; |
372 | ||
9ac0aada JR |
373 | /* Pointer to an embedded NAT action in a conntrack action, or NULL. */ |
374 | struct ofpact_nat *ct_nat_action; | |
375 | ||
7fdb60a7 SH |
376 | /* OpenFlow 1.1+ action set. |
377 | * | |
378 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
379 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
380 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 381 | * datapath actions. */ |
c61f3870 | 382 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 | 383 | struct ofpbuf action_set; /* Action set. */ |
fff1b9c0 JR |
384 | |
385 | enum xlate_error error; /* Translation failed. */ | |
4d0acc70 EJ |
386 | }; |
387 | ||
f0fb825a EG |
388 | /* Structure to track VLAN manipulation */ |
389 | struct xvlan_single { | |
390 | uint16_t tpid; | |
391 | uint16_t vid; | |
392 | uint16_t pcp; | |
393 | }; | |
394 | ||
395 | struct xvlan { | |
396 | struct xvlan_single v[FLOW_MAX_VLAN_HEADERS]; | |
397 | }; | |
398 | ||
fff1b9c0 JR |
399 | const char *xlate_strerror(enum xlate_error error) |
400 | { | |
401 | switch (error) { | |
402 | case XLATE_OK: | |
403 | return "OK"; | |
404 | case XLATE_BRIDGE_NOT_FOUND: | |
405 | return "Bridge not found"; | |
406 | case XLATE_RECURSION_TOO_DEEP: | |
407 | return "Recursion too deep"; | |
408 | case XLATE_TOO_MANY_RESUBMITS: | |
409 | return "Too many resubmits"; | |
410 | case XLATE_STACK_TOO_DEEP: | |
411 | return "Stack too deep"; | |
412 | case XLATE_NO_RECIRCULATION_CONTEXT: | |
413 | return "No recirculation context"; | |
414 | case XLATE_RECIRCULATION_CONFLICT: | |
415 | return "Recirculation conflict"; | |
416 | case XLATE_TOO_MANY_MPLS_LABELS: | |
417 | return "Too many MPLS labels"; | |
8d8ab6c2 JG |
418 | case XLATE_INVALID_TUNNEL_METADATA: |
419 | return "Invalid tunnel metadata"; | |
fff1b9c0 JR |
420 | } |
421 | return "Unknown error"; | |
422 | } | |
423 | ||
ed9c9e3e | 424 | static void xlate_action_set(struct xlate_ctx *ctx); |
704bb0bf | 425 | static void xlate_commit_actions(struct xlate_ctx *ctx); |
ed9c9e3e | 426 | |
f1dac512 SC |
427 | static void |
428 | apply_nested_clone_actions(struct xlate_ctx *ctx, const struct xport *in_dev, | |
429 | struct xport *out_dev); | |
430 | ||
1d741d6d | 431 | static void |
1d361a81 | 432 | ctx_trigger_freeze(struct xlate_ctx *ctx) |
1d741d6d JR |
433 | { |
434 | ctx->exit = true; | |
1d361a81 | 435 | ctx->freezing = true; |
1d741d6d JR |
436 | } |
437 | ||
53cc166a JR |
438 | static void |
439 | ctx_trigger_recirculate_with_hash(struct xlate_ctx *ctx, uint32_t type, | |
440 | uint32_t basis) | |
441 | { | |
442 | ctx->exit = true; | |
443 | ctx->freezing = true; | |
444 | ctx->recirc_update_dp_hash = true; | |
445 | ctx->dp_hash_alg = type; | |
446 | ctx->dp_hash_basis = basis; | |
447 | } | |
448 | ||
1d741d6d | 449 | static bool |
1d361a81 | 450 | ctx_first_frozen_action(const struct xlate_ctx *ctx) |
1d741d6d | 451 | { |
1d361a81 | 452 | return !ctx->frozen_actions.size; |
e672ff9b JR |
453 | } |
454 | ||
3293cb85 | 455 | static void |
1d361a81 | 456 | ctx_cancel_freeze(struct xlate_ctx *ctx) |
3293cb85 | 457 | { |
1d361a81 BP |
458 | if (ctx->freezing) { |
459 | ctx->freezing = false; | |
53cc166a | 460 | ctx->recirc_update_dp_hash = false; |
1d361a81 BP |
461 | ofpbuf_clear(&ctx->frozen_actions); |
462 | ctx->frozen_actions.header = NULL; | |
3293cb85 BP |
463 | } |
464 | } | |
465 | ||
77ab5fd2 | 466 | static void finish_freezing(struct xlate_ctx *ctx); |
e672ff9b | 467 | |
9583bc14 EJ |
468 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
469 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
470 | * when an input bundle is needed for validation (e.g., mirroring or | |
471 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
472 | * any 'port' structs, so care must be taken when dealing with it. */ |
473 | static struct xbundle ofpp_none_bundle = { | |
474 | .name = "OFPP_NONE", | |
475 | .vlan_mode = PORT_VLAN_TRUNK | |
476 | }; | |
9583bc14 | 477 | |
55954f6e EJ |
478 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
479 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
480 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
481 | struct skb_priority_to_dscp { | |
482 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
483 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
484 | ||
485 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
486 | }; | |
487 | ||
84f0f298 RW |
488 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
489 | * Xcfgp contains the pointer to the current xlate configuration. | |
490 | * When the main thread needs to change the configuration, it copies xcfgp to | |
491 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
492 | * does not block handler and revalidator threads. */ | |
493 | struct xlate_cfg { | |
494 | struct hmap xbridges; | |
495 | struct hmap xbundles; | |
496 | struct hmap xports; | |
497 | }; | |
b1b72f2d | 498 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 499 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
500 | |
501 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
502 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
503 | struct xlate_ctx *); | |
adcf00ba | 504 | static void xlate_normal(struct xlate_ctx *); |
6d328fa2 SH |
505 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
506 | uint8_t table_id, bool may_packet_in, | |
2cd20955 | 507 | bool honor_table_miss, bool with_ct_orig); |
2d9b49dd BP |
508 | static bool input_vid_is_valid(const struct xlate_ctx *, |
509 | uint16_t vid, struct xbundle *); | |
f0fb825a EG |
510 | static void xvlan_copy(struct xvlan *dst, const struct xvlan *src); |
511 | static void xvlan_pop(struct xvlan *src); | |
fed8962a | 512 | static void xvlan_push_uninit(struct xvlan *src); |
f0fb825a EG |
513 | static void xvlan_extract(const struct flow *, struct xvlan *); |
514 | static void xvlan_put(struct flow *, const struct xvlan *); | |
515 | static void xvlan_input_translate(const struct xbundle *, | |
516 | const struct xvlan *in, | |
517 | struct xvlan *xvlan); | |
518 | static void xvlan_output_translate(const struct xbundle *, | |
519 | const struct xvlan *xvlan, | |
520 | struct xvlan *out); | |
46c88433 | 521 | static void output_normal(struct xlate_ctx *, const struct xbundle *, |
f0fb825a | 522 | const struct xvlan *); |
e93ef1c7 JR |
523 | |
524 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
525 | struct xlate_bond_recirc { | |
526 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
527 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
528 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
529 | }; | |
530 | ||
531 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
532 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 533 | |
84f0f298 RW |
534 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
535 | const struct ofproto_dpif *); | |
290835f9 BP |
536 | static struct xbridge *xbridge_lookup_by_uuid(struct xlate_cfg *, |
537 | const struct uuid *); | |
84f0f298 RW |
538 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, |
539 | const struct ofbundle *); | |
540 | static struct xport *xport_lookup(struct xlate_cfg *, | |
541 | const struct ofport_dpif *); | |
46c88433 | 542 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
543 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
544 | uint32_t skb_priority); | |
545 | static void clear_skb_priorities(struct xport *); | |
16194afd | 546 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
547 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
548 | uint8_t *dscp); | |
46c88433 | 549 | |
84f0f298 RW |
550 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
551 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
552 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 553 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
554 | const struct mac_learning *, struct stp *, |
555 | struct rstp *, const struct mcast_snooping *, | |
556 | const struct mbridge *, | |
557 | const struct dpif_sflow *, | |
558 | const struct dpif_ipfix *, | |
2f47cdf4 | 559 | const struct netflow *, |
84f0f298 | 560 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 561 | const struct dpif_backer_support *); |
84f0f298 | 562 | static void xlate_xbundle_set(struct xbundle *xbundle, |
f0fb825a | 563 | enum port_vlan_mode vlan_mode, |
fed8962a EG |
564 | uint16_t qinq_ethtype, int vlan, |
565 | unsigned long *trunks, unsigned long *cvlans, | |
f0fb825a | 566 | bool use_priority_tags, |
84f0f298 | 567 | const struct bond *bond, const struct lacp *lacp, |
c005f976 | 568 | bool floodable, bool protected); |
84f0f298 RW |
569 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, |
570 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
571 | const struct bfd *bfd, const struct lldp *lldp, |
572 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
573 | enum ofputil_port_config config, |
574 | enum ofputil_port_state state, bool is_tunnel, | |
575 | bool may_enable); | |
576 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
577 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
578 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
579 | static void xlate_xbridge_copy(struct xbridge *); | |
580 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
581 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
582 | struct xport *); | |
583 | static void xlate_xcfg_free(struct xlate_cfg *); | |
2d9b49dd BP |
584 | \f |
585 | /* Tracing helpers. */ | |
586 | ||
587 | /* If tracing is enabled in 'ctx', creates a new trace node and appends it to | |
588 | * the list of nodes maintained in ctx->xin. The new node has type 'type' and | |
589 | * its text is created from 'format' by treating it as a printf format string. | |
590 | * Returns the list of nodes embedded within the new trace node; ordinarily, | |
591 | * the calleer can ignore this, but it is useful if the caller needs to nest | |
592 | * more trace nodes within the new node. | |
593 | * | |
594 | * If tracing is not enabled, does nothing and returns NULL. */ | |
595 | static struct ovs_list * OVS_PRINTF_FORMAT(3, 4) | |
596 | xlate_report(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
597 | const char *format, ...) | |
34dd0d78 | 598 | { |
2d9b49dd BP |
599 | struct ovs_list *subtrace = NULL; |
600 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
c1b3756c | 601 | va_list args; |
c1b3756c | 602 | va_start(args, format); |
2d9b49dd BP |
603 | char *text = xvasprintf(format, args); |
604 | subtrace = &oftrace_report(ctx->xin->trace, type, text)->subs; | |
c1b3756c | 605 | va_end(args); |
2d9b49dd | 606 | free(text); |
34dd0d78 | 607 | } |
2d9b49dd | 608 | return subtrace; |
34dd0d78 | 609 | } |
84f0f298 | 610 | |
2d9b49dd BP |
611 | /* This is like xlate_report() for errors that are serious enough that we |
612 | * should log them even if we are not tracing. */ | |
613 | static void OVS_PRINTF_FORMAT(2, 3) | |
614 | xlate_report_error(const struct xlate_ctx *ctx, const char *format, ...) | |
615 | { | |
616 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
617 | if (!OVS_UNLIKELY(ctx->xin->trace) | |
618 | && (!ctx->xin->packet || VLOG_DROP_WARN(&rl))) { | |
619 | return; | |
620 | } | |
621 | ||
622 | struct ds s = DS_EMPTY_INITIALIZER; | |
623 | va_list args; | |
624 | va_start(args, format); | |
625 | ds_put_format_valist(&s, format, args); | |
626 | va_end(args); | |
627 | ||
628 | if (ctx->xin->trace) { | |
629 | oftrace_report(ctx->xin->trace, OFT_ERROR, ds_cstr(&s)); | |
630 | } else { | |
631 | ds_put_cstr(&s, " while processing "); | |
632 | flow_format(&s, &ctx->base_flow); | |
633 | ds_put_format(&s, " on bridge %s", ctx->xbridge->name); | |
634 | VLOG_WARN("%s", ds_cstr(&s)); | |
635 | } | |
636 | ds_destroy(&s); | |
637 | } | |
638 | ||
639 | /* This is like xlate_report() for messages that should be logged at debug | |
640 | * level (even if we are not tracing) because they can be valuable for | |
641 | * debugging. */ | |
642 | static void OVS_PRINTF_FORMAT(3, 4) | |
643 | xlate_report_debug(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
644 | const char *format, ...) | |
645 | { | |
646 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
647 | if (!OVS_UNLIKELY(ctx->xin->trace) | |
648 | && (!ctx->xin->packet || VLOG_DROP_DBG(&rl))) { | |
649 | return; | |
650 | } | |
651 | ||
652 | struct ds s = DS_EMPTY_INITIALIZER; | |
653 | va_list args; | |
654 | va_start(args, format); | |
655 | ds_put_format_valist(&s, format, args); | |
656 | va_end(args); | |
fff1b9c0 | 657 | |
2d9b49dd BP |
658 | if (ctx->xin->trace) { |
659 | oftrace_report(ctx->xin->trace, type, ds_cstr(&s)); | |
660 | } else { | |
661 | VLOG_DBG("bridge %s: %s", ctx->xbridge->name, ds_cstr(&s)); | |
662 | } | |
663 | ds_destroy(&s); | |
664 | } | |
fff1b9c0 | 665 | |
2d9b49dd BP |
666 | /* If tracing is enabled in 'ctx', appends a node of the given 'type' to the |
667 | * trace, whose text is 'title' followed by a formatted version of the | |
668 | * 'ofpacts_len' OpenFlow actions in 'ofpacts'. | |
669 | * | |
670 | * If tracing is not enabled, does nothing. */ | |
671 | static void | |
672 | xlate_report_actions(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
673 | const char *title, | |
d6bef3cc BP |
674 | const struct ofpact *ofpacts, size_t ofpacts_len) |
675 | { | |
2d9b49dd | 676 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
d6bef3cc | 677 | struct ds s = DS_EMPTY_INITIALIZER; |
2d9b49dd | 678 | ds_put_format(&s, "%s: ", title); |
d6bef3cc | 679 | ofpacts_format(ofpacts, ofpacts_len, &s); |
2d9b49dd | 680 | oftrace_report(ctx->xin->trace, type, ds_cstr(&s)); |
d6bef3cc BP |
681 | ds_destroy(&s); |
682 | } | |
683 | } | |
684 | ||
2d9b49dd BP |
685 | /* If tracing is enabled in 'ctx', appends a node of type OFT_DETAIL to the |
686 | * trace, whose the message is a formatted version of the OpenFlow action set. | |
687 | * 'verb' should be "was" or "is", depending on whether the action set reported | |
688 | * is the new action set or the old one. | |
689 | * | |
690 | * If tracing is not enabled, does nothing. */ | |
691 | static void | |
692 | xlate_report_action_set(const struct xlate_ctx *ctx, const char *verb) | |
693 | { | |
694 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
695 | struct ofpbuf action_list; | |
696 | ofpbuf_init(&action_list, 0); | |
697 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
698 | if (action_list.size) { | |
699 | struct ds s = DS_EMPTY_INITIALIZER; | |
700 | ofpacts_format(action_list.data, action_list.size, &s); | |
701 | xlate_report(ctx, OFT_DETAIL, "action set %s: %s", | |
702 | verb, ds_cstr(&s)); | |
703 | ds_destroy(&s); | |
704 | } else { | |
705 | xlate_report(ctx, OFT_DETAIL, "action set %s empty", verb); | |
706 | } | |
707 | ofpbuf_uninit(&action_list); | |
708 | } | |
709 | } | |
710 | ||
711 | ||
712 | /* If tracing is enabled in 'ctx', appends a node representing 'rule' (in | |
713 | * OpenFlow table 'table_id') to the trace and makes this node the parent for | |
714 | * future trace nodes. The caller should save ctx->xin->trace before calling | |
715 | * this function, then after tracing all of the activities under the table, | |
716 | * restore its previous value. | |
717 | * | |
718 | * If tracing is not enabled, does nothing. */ | |
719 | static void | |
720 | xlate_report_table(const struct xlate_ctx *ctx, struct rule_dpif *rule, | |
721 | uint8_t table_id) | |
722 | { | |
723 | if (OVS_LIKELY(!ctx->xin->trace)) { | |
724 | return; | |
725 | } | |
726 | ||
727 | struct ds s = DS_EMPTY_INITIALIZER; | |
728 | ds_put_format(&s, "%2d. ", table_id); | |
729 | if (rule == ctx->xin->ofproto->miss_rule) { | |
730 | ds_put_cstr(&s, "No match, and a \"packet-in\" is called for."); | |
731 | } else if (rule == ctx->xin->ofproto->no_packet_in_rule) { | |
732 | ds_put_cstr(&s, "No match."); | |
733 | } else if (rule == ctx->xin->ofproto->drop_frags_rule) { | |
734 | ds_put_cstr(&s, "Packets are IP fragments and " | |
735 | "the fragment handling mode is \"drop\"."); | |
736 | } else { | |
737 | minimatch_format(&rule->up.cr.match, | |
738 | ofproto_get_tun_tab(&ctx->xin->ofproto->up), | |
739 | &s, OFP_DEFAULT_PRIORITY); | |
740 | if (ds_last(&s) != ' ') { | |
741 | ds_put_cstr(&s, ", "); | |
742 | } | |
743 | ds_put_format(&s, "priority %d", rule->up.cr.priority); | |
744 | if (rule->up.flow_cookie) { | |
745 | ds_put_format(&s, ", cookie %#"PRIx64, | |
746 | ntohll(rule->up.flow_cookie)); | |
747 | } | |
748 | } | |
749 | ctx->xin->trace = &oftrace_report(ctx->xin->trace, OFT_TABLE, | |
750 | ds_cstr(&s))->subs; | |
751 | ds_destroy(&s); | |
752 | } | |
753 | ||
754 | /* If tracing is enabled in 'ctx', adds an OFT_DETAIL trace node to 'ctx' | |
755 | * reporting the value of subfield 'sf'. | |
756 | * | |
757 | * If tracing is not enabled, does nothing. */ | |
758 | static void | |
759 | xlate_report_subfield(const struct xlate_ctx *ctx, | |
760 | const struct mf_subfield *sf) | |
761 | { | |
762 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
763 | struct ds s = DS_EMPTY_INITIALIZER; | |
764 | mf_format_subfield(sf, &s); | |
765 | ds_put_cstr(&s, " is now "); | |
766 | ||
767 | if (sf->ofs == 0 && sf->n_bits >= sf->field->n_bits) { | |
768 | union mf_value value; | |
769 | mf_get_value(sf->field, &ctx->xin->flow, &value); | |
770 | mf_format(sf->field, &value, NULL, &s); | |
771 | } else { | |
772 | union mf_subvalue cst; | |
773 | mf_read_subfield(sf, &ctx->xin->flow, &cst); | |
774 | ds_put_hex(&s, &cst, sizeof cst); | |
775 | } | |
776 | ||
777 | xlate_report(ctx, OFT_DETAIL, "%s", ds_cstr(&s)); | |
778 | ||
779 | ds_destroy(&s); | |
780 | } | |
781 | } | |
782 | \f | |
84f0f298 RW |
783 | static void |
784 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
785 | { | |
417e7e66 | 786 | ovs_list_init(&xbridge->xbundles); |
84f0f298 RW |
787 | hmap_init(&xbridge->xports); |
788 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
789 | hash_pointer(xbridge->ofproto, 0)); | |
790 | } | |
791 | ||
792 | static void | |
793 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
794 | { | |
417e7e66 BW |
795 | ovs_list_init(&xbundle->xports); |
796 | ovs_list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
84f0f298 RW |
797 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, |
798 | hash_pointer(xbundle->ofbundle, 0)); | |
799 | } | |
800 | ||
801 | static void | |
802 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
803 | { | |
804 | hmap_init(&xport->skb_priorities); | |
805 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
806 | hash_pointer(xport->ofport, 0)); | |
807 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
808 | hash_ofp_port(xport->ofp_port)); | |
809 | } | |
810 | ||
811 | static void | |
812 | xlate_xbridge_set(struct xbridge *xbridge, | |
813 | struct dpif *dpif, | |
ec89fc6f | 814 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 815 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 816 | const struct mbridge *mbridge, |
46c88433 | 817 | const struct dpif_sflow *sflow, |
ce3955be | 818 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 819 | const struct netflow *netflow, |
4b97b70d | 820 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 821 | const struct dpif_backer_support *support) |
46c88433 | 822 | { |
46c88433 EJ |
823 | if (xbridge->ml != ml) { |
824 | mac_learning_unref(xbridge->ml); | |
825 | xbridge->ml = mac_learning_ref(ml); | |
826 | } | |
827 | ||
6d95c4e8 FL |
828 | if (xbridge->ms != ms) { |
829 | mcast_snooping_unref(xbridge->ms); | |
830 | xbridge->ms = mcast_snooping_ref(ms); | |
831 | } | |
832 | ||
46c88433 EJ |
833 | if (xbridge->mbridge != mbridge) { |
834 | mbridge_unref(xbridge->mbridge); | |
835 | xbridge->mbridge = mbridge_ref(mbridge); | |
836 | } | |
837 | ||
838 | if (xbridge->sflow != sflow) { | |
839 | dpif_sflow_unref(xbridge->sflow); | |
840 | xbridge->sflow = dpif_sflow_ref(sflow); | |
841 | } | |
842 | ||
843 | if (xbridge->ipfix != ipfix) { | |
844 | dpif_ipfix_unref(xbridge->ipfix); | |
845 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
846 | } | |
847 | ||
9d189a50 EJ |
848 | if (xbridge->stp != stp) { |
849 | stp_unref(xbridge->stp); | |
850 | xbridge->stp = stp_ref(stp); | |
851 | } | |
852 | ||
9efd308e DV |
853 | if (xbridge->rstp != rstp) { |
854 | rstp_unref(xbridge->rstp); | |
855 | xbridge->rstp = rstp_ref(rstp); | |
856 | } | |
857 | ||
ce3955be EJ |
858 | if (xbridge->netflow != netflow) { |
859 | netflow_unref(xbridge->netflow); | |
860 | xbridge->netflow = netflow_ref(netflow); | |
861 | } | |
862 | ||
89a8a7f0 | 863 | xbridge->dpif = dpif; |
46c88433 EJ |
864 | xbridge->forward_bpdu = forward_bpdu; |
865 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 866 | xbridge->support = *support; |
46c88433 EJ |
867 | } |
868 | ||
84f0f298 RW |
869 | static void |
870 | xlate_xbundle_set(struct xbundle *xbundle, | |
fed8962a EG |
871 | enum port_vlan_mode vlan_mode, uint16_t qinq_ethtype, |
872 | int vlan, unsigned long *trunks, unsigned long *cvlans, | |
f0fb825a | 873 | bool use_priority_tags, |
84f0f298 | 874 | const struct bond *bond, const struct lacp *lacp, |
c005f976 | 875 | bool floodable, bool protected) |
84f0f298 RW |
876 | { |
877 | ovs_assert(xbundle->xbridge); | |
878 | ||
879 | xbundle->vlan_mode = vlan_mode; | |
fed8962a | 880 | xbundle->qinq_ethtype = qinq_ethtype; |
84f0f298 RW |
881 | xbundle->vlan = vlan; |
882 | xbundle->trunks = trunks; | |
fed8962a | 883 | xbundle->cvlans = cvlans; |
84f0f298 RW |
884 | xbundle->use_priority_tags = use_priority_tags; |
885 | xbundle->floodable = floodable; | |
c005f976 | 886 | xbundle->protected = protected; |
84f0f298 RW |
887 | |
888 | if (xbundle->bond != bond) { | |
889 | bond_unref(xbundle->bond); | |
890 | xbundle->bond = bond_ref(bond); | |
891 | } | |
892 | ||
893 | if (xbundle->lacp != lacp) { | |
894 | lacp_unref(xbundle->lacp); | |
895 | xbundle->lacp = lacp_ref(lacp); | |
896 | } | |
897 | } | |
898 | ||
899 | static void | |
900 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
901 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 902 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 903 | const struct rstp_port* rstp_port, |
84f0f298 RW |
904 | enum ofputil_port_config config, enum ofputil_port_state state, |
905 | bool is_tunnel, bool may_enable) | |
906 | { | |
907 | xport->config = config; | |
908 | xport->state = state; | |
909 | xport->stp_port_no = stp_port_no; | |
910 | xport->is_tunnel = is_tunnel; | |
911 | xport->may_enable = may_enable; | |
912 | xport->odp_port = odp_port; | |
913 | ||
f025bcb7 JR |
914 | if (xport->rstp_port != rstp_port) { |
915 | rstp_port_unref(xport->rstp_port); | |
916 | xport->rstp_port = rstp_port_ref(rstp_port); | |
917 | } | |
918 | ||
84f0f298 RW |
919 | if (xport->cfm != cfm) { |
920 | cfm_unref(xport->cfm); | |
921 | xport->cfm = cfm_ref(cfm); | |
922 | } | |
923 | ||
924 | if (xport->bfd != bfd) { | |
925 | bfd_unref(xport->bfd); | |
926 | xport->bfd = bfd_ref(bfd); | |
927 | } | |
928 | ||
0477baa9 DF |
929 | if (xport->lldp != lldp) { |
930 | lldp_unref(xport->lldp); | |
931 | xport->lldp = lldp_ref(lldp); | |
932 | } | |
933 | ||
84f0f298 RW |
934 | if (xport->netdev != netdev) { |
935 | netdev_close(xport->netdev); | |
936 | xport->netdev = netdev_ref(netdev); | |
937 | } | |
938 | } | |
939 | ||
940 | static void | |
941 | xlate_xbridge_copy(struct xbridge *xbridge) | |
942 | { | |
943 | struct xbundle *xbundle; | |
944 | struct xport *xport; | |
945 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
946 | new_xbridge->ofproto = xbridge->ofproto; | |
947 | new_xbridge->name = xstrdup(xbridge->name); | |
948 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
949 | ||
950 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 951 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
952 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
953 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
954 | xbridge->forward_bpdu, xbridge->has_in_band, |
955 | &xbridge->support); | |
84f0f298 RW |
956 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
957 | xlate_xbundle_copy(new_xbridge, xbundle); | |
958 | } | |
959 | ||
960 | /* Copy xports which are not part of a xbundle */ | |
961 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
962 | if (!xport->xbundle) { | |
963 | xlate_xport_copy(new_xbridge, NULL, xport); | |
964 | } | |
965 | } | |
966 | } | |
967 | ||
968 | static void | |
969 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
970 | { | |
971 | struct xport *xport; | |
972 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
973 | new_xbundle->ofbundle = xbundle->ofbundle; | |
974 | new_xbundle->xbridge = xbridge; | |
975 | new_xbundle->name = xstrdup(xbundle->name); | |
976 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
977 | ||
fed8962a EG |
978 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, xbundle->qinq_ethtype, |
979 | xbundle->vlan, xbundle->trunks, xbundle->cvlans, | |
84f0f298 | 980 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, |
c005f976 | 981 | xbundle->floodable, xbundle->protected); |
84f0f298 RW |
982 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { |
983 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
984 | } | |
985 | } | |
986 | ||
987 | static void | |
988 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
989 | struct xport *xport) | |
990 | { | |
991 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
992 | struct xport *new_xport = xzalloc(sizeof *xport); | |
993 | new_xport->ofport = xport->ofport; | |
994 | new_xport->ofp_port = xport->ofp_port; | |
995 | new_xport->xbridge = xbridge; | |
996 | xlate_xport_init(new_xcfg, new_xport); | |
997 | ||
998 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
999 | xport->bfd, xport->lldp, xport->stp_port_no, |
1000 | xport->rstp_port, xport->config, xport->state, | |
1001 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
1002 | |
1003 | if (xport->peer) { | |
1004 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
1005 | if (peer) { | |
1006 | new_xport->peer = peer; | |
1007 | new_xport->peer->peer = new_xport; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | if (xbundle) { | |
1012 | new_xport->xbundle = xbundle; | |
417e7e66 | 1013 | ovs_list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); |
84f0f298 RW |
1014 | } |
1015 | ||
1016 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
1017 | new_pdscp = xmalloc(sizeof *pdscp); | |
1018 | new_pdscp->skb_priority = pdscp->skb_priority; | |
1019 | new_pdscp->dscp = pdscp->dscp; | |
1020 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
1021 | hash_int(new_pdscp->skb_priority, 0)); | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
1026 | * configuration in xcfgp. | |
1027 | * | |
1028 | * This needs to be called after editing the xlate configuration. | |
1029 | * | |
1030 | * Functions that edit the new xlate configuration are | |
6cd20a22 | 1031 | * xlate_<ofproto/bundle/ofport>_set and xlate_<ofproto/bundle/ofport>_remove. |
84f0f298 RW |
1032 | * |
1033 | * A sample workflow: | |
1034 | * | |
1035 | * xlate_txn_start(); | |
1036 | * ... | |
1037 | * edit_xlate_configuration(); | |
1038 | * ... | |
1039 | * xlate_txn_commit(); */ | |
46c88433 | 1040 | void |
84f0f298 RW |
1041 | xlate_txn_commit(void) |
1042 | { | |
1043 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1044 | ||
1045 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
1046 | ovsrcu_synchronize(); |
1047 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
1048 | new_xcfg = NULL; |
1049 | } | |
1050 | ||
1051 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
1052 | * | |
1053 | * This needs to be called prior to editing the xlate configuration. */ | |
1054 | void | |
1055 | xlate_txn_start(void) | |
1056 | { | |
1057 | struct xbridge *xbridge; | |
1058 | struct xlate_cfg *xcfg; | |
1059 | ||
1060 | ovs_assert(!new_xcfg); | |
1061 | ||
1062 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
1063 | hmap_init(&new_xcfg->xbridges); | |
1064 | hmap_init(&new_xcfg->xbundles); | |
1065 | hmap_init(&new_xcfg->xports); | |
1066 | ||
1067 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1068 | if (!xcfg) { | |
1069 | return; | |
1070 | } | |
1071 | ||
1072 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
1073 | xlate_xbridge_copy(xbridge); | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | ||
1078 | static void | |
1079 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
1080 | { | |
1081 | struct xbridge *xbridge, *next_xbridge; | |
1082 | ||
1083 | if (!xcfg) { | |
1084 | return; | |
1085 | } | |
1086 | ||
1087 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
1088 | xlate_xbridge_remove(xcfg, xbridge); | |
1089 | } | |
1090 | ||
1091 | hmap_destroy(&xcfg->xbridges); | |
1092 | hmap_destroy(&xcfg->xbundles); | |
1093 | hmap_destroy(&xcfg->xports); | |
1094 | free(xcfg); | |
1095 | } | |
1096 | ||
1097 | void | |
1098 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 1099 | struct dpif *dpif, |
84f0f298 | 1100 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 1101 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
1102 | const struct mbridge *mbridge, |
1103 | const struct dpif_sflow *sflow, | |
1104 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 1105 | const struct netflow *netflow, |
b440dd8c JS |
1106 | bool forward_bpdu, bool has_in_band, |
1107 | const struct dpif_backer_support *support) | |
84f0f298 RW |
1108 | { |
1109 | struct xbridge *xbridge; | |
1110 | ||
1111 | ovs_assert(new_xcfg); | |
1112 | ||
1113 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
1114 | if (!xbridge) { | |
1115 | xbridge = xzalloc(sizeof *xbridge); | |
1116 | xbridge->ofproto = ofproto; | |
1117 | ||
1118 | xlate_xbridge_init(new_xcfg, xbridge); | |
1119 | } | |
1120 | ||
1121 | free(xbridge->name); | |
1122 | xbridge->name = xstrdup(name); | |
1123 | ||
34dd0d78 | 1124 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 1125 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
1126 | } |
1127 | ||
1128 | static void | |
1129 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 1130 | { |
46c88433 EJ |
1131 | struct xbundle *xbundle, *next_xbundle; |
1132 | struct xport *xport, *next_xport; | |
1133 | ||
1134 | if (!xbridge) { | |
1135 | return; | |
1136 | } | |
1137 | ||
1138 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 1139 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
1140 | } |
1141 | ||
1142 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 1143 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
1144 | } |
1145 | ||
84f0f298 | 1146 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 1147 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 1148 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
1149 | mbridge_unref(xbridge->mbridge); |
1150 | dpif_sflow_unref(xbridge->sflow); | |
1151 | dpif_ipfix_unref(xbridge->ipfix); | |
3570f7e4 | 1152 | netflow_unref(xbridge->netflow); |
795cc5c1 | 1153 | stp_unref(xbridge->stp); |
9efd308e | 1154 | rstp_unref(xbridge->rstp); |
795cc5c1 | 1155 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
1156 | free(xbridge->name); |
1157 | free(xbridge); | |
1158 | } | |
1159 | ||
84f0f298 RW |
1160 | void |
1161 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
1162 | { | |
1163 | struct xbridge *xbridge; | |
1164 | ||
1165 | ovs_assert(new_xcfg); | |
1166 | ||
1167 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
1168 | xlate_xbridge_remove(new_xcfg, xbridge); | |
1169 | } | |
1170 | ||
46c88433 EJ |
1171 | void |
1172 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
f0fb825a | 1173 | const char *name, enum port_vlan_mode vlan_mode, |
fed8962a EG |
1174 | uint16_t qinq_ethtype, int vlan, |
1175 | unsigned long *trunks, unsigned long *cvlans, | |
f0fb825a | 1176 | bool use_priority_tags, |
46c88433 | 1177 | const struct bond *bond, const struct lacp *lacp, |
c005f976 | 1178 | bool floodable, bool protected) |
46c88433 | 1179 | { |
84f0f298 | 1180 | struct xbundle *xbundle; |
46c88433 | 1181 | |
84f0f298 RW |
1182 | ovs_assert(new_xcfg); |
1183 | ||
1184 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
1185 | if (!xbundle) { |
1186 | xbundle = xzalloc(sizeof *xbundle); | |
1187 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 1188 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 1189 | |
84f0f298 | 1190 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
1191 | } |
1192 | ||
46c88433 EJ |
1193 | free(xbundle->name); |
1194 | xbundle->name = xstrdup(name); | |
1195 | ||
fed8962a | 1196 | xlate_xbundle_set(xbundle, vlan_mode, qinq_ethtype, vlan, trunks, cvlans, |
c005f976 | 1197 | use_priority_tags, bond, lacp, floodable, protected); |
46c88433 EJ |
1198 | } |
1199 | ||
84f0f298 RW |
1200 | static void |
1201 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 1202 | { |
5f03c983 | 1203 | struct xport *xport; |
46c88433 EJ |
1204 | |
1205 | if (!xbundle) { | |
1206 | return; | |
1207 | } | |
1208 | ||
5f03c983 | 1209 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
1210 | xport->xbundle = NULL; |
1211 | } | |
1212 | ||
84f0f298 | 1213 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
417e7e66 | 1214 | ovs_list_remove(&xbundle->list_node); |
46c88433 EJ |
1215 | bond_unref(xbundle->bond); |
1216 | lacp_unref(xbundle->lacp); | |
1217 | free(xbundle->name); | |
1218 | free(xbundle); | |
1219 | } | |
1220 | ||
84f0f298 RW |
1221 | void |
1222 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
1223 | { | |
1224 | struct xbundle *xbundle; | |
1225 | ||
1226 | ovs_assert(new_xcfg); | |
1227 | ||
1228 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
1229 | xlate_xbundle_remove(new_xcfg, xbundle); | |
1230 | } | |
1231 | ||
46c88433 EJ |
1232 | void |
1233 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
1234 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
1235 | odp_port_t odp_port, const struct netdev *netdev, | |
1236 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
1237 | const struct lldp *lldp, struct ofport_dpif *peer, |
1238 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 1239 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
1240 | enum ofputil_port_config config, |
1241 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 1242 | bool may_enable) |
46c88433 | 1243 | { |
55954f6e | 1244 | size_t i; |
84f0f298 RW |
1245 | struct xport *xport; |
1246 | ||
1247 | ovs_assert(new_xcfg); | |
46c88433 | 1248 | |
84f0f298 | 1249 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
1250 | if (!xport) { |
1251 | xport = xzalloc(sizeof *xport); | |
1252 | xport->ofport = ofport; | |
84f0f298 | 1253 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
1254 | xport->ofp_port = ofp_port; |
1255 | ||
84f0f298 | 1256 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
1257 | } |
1258 | ||
1259 | ovs_assert(xport->ofp_port == ofp_port); | |
1260 | ||
0477baa9 DF |
1261 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
1262 | stp_port_no, rstp_port, config, state, is_tunnel, | |
1263 | may_enable); | |
46c88433 EJ |
1264 | |
1265 | if (xport->peer) { | |
1266 | xport->peer->peer = NULL; | |
1267 | } | |
84f0f298 | 1268 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
1269 | if (xport->peer) { |
1270 | xport->peer->peer = xport; | |
1271 | } | |
1272 | ||
1273 | if (xport->xbundle) { | |
417e7e66 | 1274 | ovs_list_remove(&xport->bundle_node); |
46c88433 | 1275 | } |
84f0f298 | 1276 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 | 1277 | if (xport->xbundle) { |
417e7e66 | 1278 | ovs_list_insert(&xport->xbundle->xports, &xport->bundle_node); |
46c88433 | 1279 | } |
55954f6e EJ |
1280 | |
1281 | clear_skb_priorities(xport); | |
1282 | for (i = 0; i < n_qdscp; i++) { | |
1283 | struct skb_priority_to_dscp *pdscp; | |
1284 | uint32_t skb_priority; | |
1285 | ||
89a8a7f0 EJ |
1286 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1287 | &skb_priority)) { | |
55954f6e EJ |
1288 | continue; |
1289 | } | |
1290 | ||
1291 | pdscp = xmalloc(sizeof *pdscp); | |
1292 | pdscp->skb_priority = skb_priority; | |
1293 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1294 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1295 | hash_int(pdscp->skb_priority, 0)); | |
1296 | } | |
46c88433 EJ |
1297 | } |
1298 | ||
84f0f298 RW |
1299 | static void |
1300 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1301 | { |
46c88433 EJ |
1302 | if (!xport) { |
1303 | return; | |
1304 | } | |
1305 | ||
1306 | if (xport->peer) { | |
1307 | xport->peer->peer = NULL; | |
1308 | xport->peer = NULL; | |
1309 | } | |
1310 | ||
e621a12d | 1311 | if (xport->xbundle) { |
417e7e66 | 1312 | ovs_list_remove(&xport->bundle_node); |
e621a12d EJ |
1313 | } |
1314 | ||
55954f6e EJ |
1315 | clear_skb_priorities(xport); |
1316 | hmap_destroy(&xport->skb_priorities); | |
1317 | ||
84f0f298 | 1318 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1319 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1320 | ||
1321 | netdev_close(xport->netdev); | |
f025bcb7 | 1322 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1323 | cfm_unref(xport->cfm); |
1324 | bfd_unref(xport->bfd); | |
0477baa9 | 1325 | lldp_unref(xport->lldp); |
46c88433 EJ |
1326 | free(xport); |
1327 | } | |
1328 | ||
84f0f298 RW |
1329 | void |
1330 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1331 | { | |
1332 | struct xport *xport; | |
1333 | ||
1334 | ovs_assert(new_xcfg); | |
1335 | ||
1336 | xport = xport_lookup(new_xcfg, ofport); | |
1337 | xlate_xport_remove(new_xcfg, xport); | |
1338 | } | |
1339 | ||
ef377a58 JR |
1340 | static struct ofproto_dpif * |
1341 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1342 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1343 | { | |
e672ff9b | 1344 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1345 | const struct xport *xport; |
f9038ef6 | 1346 | |
e672ff9b JR |
1347 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1348 | ? tnl_port_receive(flow) | |
1349 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1350 | if (OVS_UNLIKELY(!xport)) { | |
1351 | return NULL; | |
ef377a58 | 1352 | } |
e672ff9b | 1353 | *xportp = xport; |
f9038ef6 | 1354 | if (ofp_in_port) { |
e672ff9b | 1355 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1356 | } |
e672ff9b | 1357 | return xport->xbridge->ofproto; |
ef377a58 JR |
1358 | } |
1359 | ||
1360 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1361 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1362 | struct ofproto_dpif * | |
1363 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1364 | ofp_port_t *ofp_in_port) | |
1365 | { | |
1366 | const struct xport *xport; | |
1367 | ||
1368 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1369 | } | |
1370 | ||
cc377352 | 1371 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1372 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1373 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1374 | * handles for those protocols if they're enabled. Caller may use the returned |
1375 | * pointers until quiescing, for longer term use additional references must | |
1376 | * be taken. | |
8449c4d6 | 1377 | * |
f9038ef6 | 1378 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1379 | */ |
8449c4d6 | 1380 | int |
5c476ea3 JR |
1381 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1382 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1383 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1384 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1385 | { |
ef377a58 | 1386 | struct ofproto_dpif *ofproto; |
84f0f298 | 1387 | const struct xport *xport; |
8449c4d6 | 1388 | |
ef377a58 | 1389 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1390 | |
f9038ef6 | 1391 | if (!ofproto) { |
cc377352 | 1392 | return ENODEV; |
8449c4d6 | 1393 | } |
8449c4d6 | 1394 | |
ef377a58 JR |
1395 | if (ofprotop) { |
1396 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1397 | } |
1398 | ||
1dfdb9b3 | 1399 | if (ipfix) { |
f9038ef6 | 1400 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1401 | } |
1402 | ||
1403 | if (sflow) { | |
f9038ef6 | 1404 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1405 | } |
1406 | ||
1407 | if (netflow) { | |
f9038ef6 | 1408 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1409 | } |
f9038ef6 | 1410 | |
cc377352 | 1411 | return 0; |
8449c4d6 EJ |
1412 | } |
1413 | ||
46c88433 | 1414 | static struct xbridge * |
84f0f298 | 1415 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1416 | { |
84f0f298 | 1417 | struct hmap *xbridges; |
46c88433 EJ |
1418 | struct xbridge *xbridge; |
1419 | ||
84f0f298 | 1420 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1421 | return NULL; |
1422 | } | |
1423 | ||
84f0f298 RW |
1424 | xbridges = &xcfg->xbridges; |
1425 | ||
46c88433 | 1426 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1427 | xbridges) { |
46c88433 EJ |
1428 | if (xbridge->ofproto == ofproto) { |
1429 | return xbridge; | |
1430 | } | |
1431 | } | |
1432 | return NULL; | |
1433 | } | |
1434 | ||
290835f9 BP |
1435 | static struct xbridge * |
1436 | xbridge_lookup_by_uuid(struct xlate_cfg *xcfg, const struct uuid *uuid) | |
1437 | { | |
1438 | struct xbridge *xbridge; | |
1439 | ||
1440 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
07a3cd5c | 1441 | if (uuid_equals(&xbridge->ofproto->uuid, uuid)) { |
290835f9 BP |
1442 | return xbridge; |
1443 | } | |
1444 | } | |
1445 | return NULL; | |
1446 | } | |
1447 | ||
46c88433 | 1448 | static struct xbundle * |
84f0f298 | 1449 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1450 | { |
84f0f298 | 1451 | struct hmap *xbundles; |
46c88433 EJ |
1452 | struct xbundle *xbundle; |
1453 | ||
84f0f298 | 1454 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1455 | return NULL; |
1456 | } | |
1457 | ||
84f0f298 RW |
1458 | xbundles = &xcfg->xbundles; |
1459 | ||
46c88433 | 1460 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1461 | xbundles) { |
46c88433 EJ |
1462 | if (xbundle->ofbundle == ofbundle) { |
1463 | return xbundle; | |
1464 | } | |
1465 | } | |
1466 | return NULL; | |
1467 | } | |
1468 | ||
1469 | static struct xport * | |
84f0f298 | 1470 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1471 | { |
84f0f298 | 1472 | struct hmap *xports; |
46c88433 EJ |
1473 | struct xport *xport; |
1474 | ||
84f0f298 | 1475 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1476 | return NULL; |
1477 | } | |
1478 | ||
84f0f298 RW |
1479 | xports = &xcfg->xports; |
1480 | ||
46c88433 | 1481 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1482 | xports) { |
46c88433 EJ |
1483 | if (xport->ofport == ofport) { |
1484 | return xport; | |
1485 | } | |
1486 | } | |
1487 | return NULL; | |
1488 | } | |
1489 | ||
40085e56 EJ |
1490 | static struct stp_port * |
1491 | xport_get_stp_port(const struct xport *xport) | |
1492 | { | |
92cf817b | 1493 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1494 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1495 | : NULL; | |
1496 | } | |
9d189a50 | 1497 | |
0d1cee12 | 1498 | static bool |
9d189a50 EJ |
1499 | xport_stp_learn_state(const struct xport *xport) |
1500 | { | |
40085e56 | 1501 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1502 | return sp |
1503 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1504 | : true; | |
9d189a50 EJ |
1505 | } |
1506 | ||
1507 | static bool | |
1508 | xport_stp_forward_state(const struct xport *xport) | |
1509 | { | |
40085e56 | 1510 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1511 | return sp |
1512 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1513 | : true; | |
9d189a50 EJ |
1514 | } |
1515 | ||
0d1cee12 | 1516 | static bool |
bacdb85a | 1517 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1518 | { |
1519 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1520 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1521 | } |
1522 | ||
9d189a50 EJ |
1523 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1524 | * were used to make the determination.*/ | |
1525 | static bool | |
1526 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1527 | { | |
bbbca389 | 1528 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1529 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1530 | return is_stp(flow); |
9d189a50 EJ |
1531 | } |
1532 | ||
1533 | static void | |
cf62fa4c | 1534 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1535 | { |
40085e56 | 1536 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1537 | struct dp_packet payload = *packet; |
1538 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1539 | |
1540 | /* Sink packets on ports that have STP disabled when the bridge has | |
1541 | * STP enabled. */ | |
1542 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1543 | return; | |
1544 | } | |
1545 | ||
1546 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1547 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1548 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1549 | } |
1550 | ||
cf62fa4c PS |
1551 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1552 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1553 | } |
1554 | } | |
1555 | ||
f025bcb7 JR |
1556 | static enum rstp_state |
1557 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1558 | { |
f025bcb7 JR |
1559 | return xport->rstp_port |
1560 | ? rstp_port_get_state(xport->rstp_port) | |
1561 | : RSTP_DISABLED; | |
9efd308e DV |
1562 | } |
1563 | ||
1564 | static bool | |
1565 | xport_rstp_learn_state(const struct xport *xport) | |
1566 | { | |
4b5f1996 DV |
1567 | return xport->xbridge->rstp && xport->rstp_port |
1568 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1569 | : true; | |
9efd308e DV |
1570 | } |
1571 | ||
1572 | static bool | |
1573 | xport_rstp_forward_state(const struct xport *xport) | |
1574 | { | |
4b5f1996 DV |
1575 | return xport->xbridge->rstp && xport->rstp_port |
1576 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1577 | : true; | |
9efd308e DV |
1578 | } |
1579 | ||
1580 | static bool | |
1581 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1582 | { | |
f025bcb7 | 1583 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1584 | } |
1585 | ||
1586 | static void | |
cf62fa4c | 1587 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1588 | { |
cf62fa4c PS |
1589 | struct dp_packet payload = *packet; |
1590 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1591 | |
f025bcb7 JR |
1592 | /* Sink packets on ports that have no RSTP. */ |
1593 | if (!xport->rstp_port) { | |
9efd308e DV |
1594 | return; |
1595 | } | |
1596 | ||
1597 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1598 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1599 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1600 | } |
1601 | ||
cf62fa4c PS |
1602 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1603 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1604 | dp_packet_size(&payload)); | |
9efd308e DV |
1605 | } |
1606 | } | |
1607 | ||
46c88433 EJ |
1608 | static struct xport * |
1609 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1610 | { | |
1611 | struct xport *xport; | |
1612 | ||
1613 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1614 | &xbridge->xports) { | |
1615 | if (xport->ofp_port == ofp_port) { | |
1616 | return xport; | |
1617 | } | |
1618 | } | |
1619 | return NULL; | |
1620 | } | |
1621 | ||
1622 | static odp_port_t | |
1623 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1624 | { | |
1625 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1626 | return xport ? xport->odp_port : ODPP_NONE; | |
1627 | } | |
1628 | ||
dd8cd4b4 SH |
1629 | static bool |
1630 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1631 | { | |
086fa873 BP |
1632 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1633 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1634 | } |
1635 | ||
1e684d7d | 1636 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1637 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1638 | int depth); | |
1639 | ||
1640 | static bool | |
1641 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1642 | { | |
1643 | struct group_dpif *group; | |
dd8cd4b4 | 1644 | |
5d08a275 | 1645 | group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, |
1f4a8933 | 1646 | ctx->xin->tables_version, false); |
db88b35c | 1647 | if (group) { |
76973237 | 1648 | return group_first_live_bucket(ctx, group, depth) != NULL; |
dc25893e | 1649 | } |
dd8cd4b4 | 1650 | |
dc25893e | 1651 | return false; |
dd8cd4b4 SH |
1652 | } |
1653 | ||
1654 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1655 | ||
1656 | static bool | |
1657 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1658 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1659 | { |
1660 | if (depth >= MAX_LIVENESS_RECURSION) { | |
2d9b49dd BP |
1661 | xlate_report_error(ctx, "bucket chaining exceeded %d links", |
1662 | MAX_LIVENESS_RECURSION); | |
dd8cd4b4 SH |
1663 | return false; |
1664 | } | |
1665 | ||
fdb1999b AZ |
1666 | return (!ofputil_bucket_has_liveness(bucket) |
1667 | || (bucket->watch_port != OFPP_ANY | |
1668 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1669 | || (bucket->watch_group != OFPG_ANY | |
1670 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1671 | } |
1672 | ||
1e684d7d | 1673 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1674 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1675 | const struct group_dpif *group, int depth) | |
1676 | { | |
1677 | struct ofputil_bucket *bucket; | |
07a3cd5c | 1678 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
dd8cd4b4 SH |
1679 | if (bucket_is_alive(ctx, bucket, depth)) { |
1680 | return bucket; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | return NULL; | |
1685 | } | |
1686 | ||
1e684d7d | 1687 | static struct ofputil_bucket * |
fe7e5749 SH |
1688 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1689 | const struct group_dpif *group, | |
1690 | uint32_t basis) | |
1691 | { | |
1e684d7d | 1692 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 | 1693 | uint32_t best_score = 0; |
fe7e5749 | 1694 | |
1e684d7d | 1695 | struct ofputil_bucket *bucket; |
07a3cd5c | 1696 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
fe7e5749 | 1697 | if (bucket_is_alive(ctx, bucket, 0)) { |
c09cb861 LS |
1698 | uint32_t score = |
1699 | (hash_int(bucket->bucket_id, basis) & 0xffff) * bucket->weight; | |
fe7e5749 SH |
1700 | if (score >= best_score) { |
1701 | best_bucket = bucket; | |
1702 | best_score = score; | |
1703 | } | |
1704 | } | |
fe7e5749 SH |
1705 | } |
1706 | ||
1707 | return best_bucket; | |
1708 | } | |
1709 | ||
9583bc14 | 1710 | static bool |
46c88433 | 1711 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1712 | { |
1713 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1714 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1715 | } | |
1716 | ||
fed8962a EG |
1717 | static bool |
1718 | xbundle_allows_cvlan(const struct xbundle *bundle, uint16_t vlan) | |
1719 | { | |
1720 | return (!bundle->cvlans || bitmap_is_set(bundle->cvlans, vlan)); | |
1721 | } | |
1722 | ||
9583bc14 | 1723 | static bool |
f0fb825a | 1724 | xbundle_includes_vlan(const struct xbundle *xbundle, const struct xvlan *xvlan) |
46c88433 | 1725 | { |
f0fb825a EG |
1726 | switch (xbundle->vlan_mode) { |
1727 | case PORT_VLAN_ACCESS: | |
1728 | return xvlan->v[0].vid == xbundle->vlan && xvlan->v[1].vid == 0; | |
1729 | ||
1730 | case PORT_VLAN_TRUNK: | |
1731 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1732 | case PORT_VLAN_NATIVE_TAGGED: | |
1733 | return xbundle_trunks_vlan(xbundle, xvlan->v[0].vid); | |
1734 | ||
fed8962a EG |
1735 | case PORT_VLAN_DOT1Q_TUNNEL: |
1736 | return xvlan->v[0].vid == xbundle->vlan && | |
1737 | xbundle_allows_cvlan(xbundle, xvlan->v[1].vid); | |
1738 | ||
f0fb825a EG |
1739 | default: |
1740 | OVS_NOT_REACHED(); | |
1741 | } | |
46c88433 EJ |
1742 | } |
1743 | ||
1744 | static mirror_mask_t | |
1745 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1746 | { | |
1747 | return xbundle != &ofpp_none_bundle | |
1748 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1749 | : 0; | |
1750 | } | |
1751 | ||
1752 | static mirror_mask_t | |
1753 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1754 | { |
46c88433 EJ |
1755 | return xbundle != &ofpp_none_bundle |
1756 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1757 | : 0; | |
9583bc14 EJ |
1758 | } |
1759 | ||
46c88433 EJ |
1760 | static mirror_mask_t |
1761 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1762 | { |
46c88433 EJ |
1763 | return xbundle != &ofpp_none_bundle |
1764 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1765 | : 0; | |
1766 | } | |
1767 | ||
1768 | static struct xbundle * | |
2d9b49dd BP |
1769 | lookup_input_bundle__(const struct xbridge *xbridge, |
1770 | ofp_port_t in_port, struct xport **in_xportp) | |
46c88433 EJ |
1771 | { |
1772 | struct xport *xport; | |
9583bc14 EJ |
1773 | |
1774 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1775 | xport = get_ofp_port(xbridge, in_port); |
1776 | if (in_xportp) { | |
1777 | *in_xportp = xport; | |
9583bc14 | 1778 | } |
46c88433 EJ |
1779 | if (xport && xport->xbundle) { |
1780 | return xport->xbundle; | |
9583bc14 EJ |
1781 | } |
1782 | ||
6362203b YT |
1783 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1784 | * which a controller may use as the ingress port for traffic that | |
1785 | * it is sourcing. */ | |
1786 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1787 | return &ofpp_none_bundle; |
1788 | } | |
2d9b49dd BP |
1789 | return NULL; |
1790 | } | |
9583bc14 | 1791 | |
2d9b49dd BP |
1792 | static struct xbundle * |
1793 | lookup_input_bundle(const struct xlate_ctx *ctx, | |
1794 | ofp_port_t in_port, struct xport **in_xportp) | |
1795 | { | |
1796 | struct xbundle *xbundle = lookup_input_bundle__(ctx->xbridge, | |
1797 | in_port, in_xportp); | |
1798 | if (!xbundle) { | |
1799 | /* Odd. A few possible reasons here: | |
1800 | * | |
1801 | * - We deleted a port but there are still a few packets queued up | |
1802 | * from it. | |
1803 | * | |
1804 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1805 | * we don't know about. | |
1806 | * | |
1807 | * - The ofproto client didn't configure the port as part of a bundle. | |
1808 | * This is particularly likely to happen if a packet was received on | |
1809 | * the port after it was created, but before the client had a chance | |
1810 | * to configure its bundle. | |
1811 | */ | |
94783c7c | 1812 | xlate_report_error(ctx, "received packet on unknown port %"PRIu32, |
2d9b49dd | 1813 | in_port); |
9583bc14 | 1814 | } |
2d9b49dd | 1815 | return xbundle; |
9583bc14 EJ |
1816 | } |
1817 | ||
faa624b4 BP |
1818 | /* Mirrors the packet represented by 'ctx' to appropriate mirror destinations, |
1819 | * given the packet is ingressing or egressing on 'xbundle', which has ingress | |
1820 | * or egress (as appropriate) mirrors 'mirrors'. */ | |
9583bc14 | 1821 | static void |
7efbc3b7 BP |
1822 | mirror_packet(struct xlate_ctx *ctx, struct xbundle *xbundle, |
1823 | mirror_mask_t mirrors) | |
9583bc14 | 1824 | { |
f0fb825a EG |
1825 | struct xvlan in_xvlan; |
1826 | struct xvlan xvlan; | |
1827 | ||
faa624b4 BP |
1828 | /* Figure out what VLAN the packet is in (because mirrors can select |
1829 | * packets on basis of VLAN). */ | |
f0fb825a EG |
1830 | xvlan_extract(&ctx->xin->flow, &in_xvlan); |
1831 | if (!input_vid_is_valid(ctx, in_xvlan.v[0].vid, xbundle)) { | |
9583bc14 EJ |
1832 | return; |
1833 | } | |
f0fb825a | 1834 | xvlan_input_translate(xbundle, &in_xvlan, &xvlan); |
9583bc14 | 1835 | |
7efbc3b7 | 1836 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1837 | |
7efbc3b7 BP |
1838 | /* Don't mirror to destinations that we've already mirrored to. */ |
1839 | mirrors &= ~ctx->mirrors; | |
9583bc14 EJ |
1840 | if (!mirrors) { |
1841 | return; | |
1842 | } | |
1843 | ||
7efbc3b7 BP |
1844 | if (ctx->xin->resubmit_stats) { |
1845 | mirror_update_stats(xbridge->mbridge, mirrors, | |
1846 | ctx->xin->resubmit_stats->n_packets, | |
1847 | ctx->xin->resubmit_stats->n_bytes); | |
1848 | } | |
1849 | if (ctx->xin->xcache) { | |
1850 | struct xc_entry *entry; | |
1851 | ||
1852 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_MIRROR); | |
901a517e JR |
1853 | entry->mirror.mbridge = mbridge_ref(xbridge->mbridge); |
1854 | entry->mirror.mirrors = mirrors; | |
7efbc3b7 | 1855 | } |
9583bc14 | 1856 | |
faa624b4 BP |
1857 | /* 'mirrors' is a bit-mask of candidates for mirroring. Iterate as long as |
1858 | * some candidates remain. */ | |
9583bc14 | 1859 | while (mirrors) { |
7efbc3b7 | 1860 | const unsigned long *vlans; |
ec7ceaed EJ |
1861 | mirror_mask_t dup_mirrors; |
1862 | struct ofbundle *out; | |
ec7ceaed | 1863 | int out_vlan; |
1356dbd1 | 1864 | int snaplen; |
ec7ceaed | 1865 | |
faa624b4 | 1866 | /* Get the details of the mirror represented by the rightmost 1-bit. */ |
7efbc3b7 | 1867 | bool has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
1356dbd1 WT |
1868 | &vlans, &dup_mirrors, |
1869 | &out, &snaplen, &out_vlan); | |
ec7ceaed EJ |
1870 | ovs_assert(has_mirror); |
1871 | ||
1356dbd1 | 1872 | |
faa624b4 BP |
1873 | /* If this mirror selects on the basis of VLAN, and it does not select |
1874 | * 'vlan', then discard this mirror and go on to the next one. */ | |
ec7ceaed | 1875 | if (vlans) { |
f0fb825a | 1876 | ctx->wc->masks.vlans[0].tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
9583bc14 | 1877 | } |
f0fb825a | 1878 | if (vlans && !bitmap_is_set(vlans, xvlan.v[0].vid)) { |
9583bc14 EJ |
1879 | mirrors = zero_rightmost_1bit(mirrors); |
1880 | continue; | |
1881 | } | |
1882 | ||
faa624b4 BP |
1883 | /* Record the mirror, and the mirrors that output to the same |
1884 | * destination, so that we don't mirror to them again. This must be | |
1885 | * done now to ensure that output_normal(), below, doesn't recursively | |
1886 | * output to the same mirrors. */ | |
3d6151f3 | 1887 | ctx->mirrors |= dup_mirrors; |
1356dbd1 | 1888 | ctx->mirror_snaplen = snaplen; |
faa624b4 BP |
1889 | |
1890 | /* Send the packet to the mirror. */ | |
ec7ceaed | 1891 | if (out) { |
84f0f298 RW |
1892 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1893 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 | 1894 | if (out_xbundle) { |
f0fb825a | 1895 | output_normal(ctx, out_xbundle, &xvlan); |
46c88433 | 1896 | } |
f0fb825a | 1897 | } else if (xvlan.v[0].vid != out_vlan |
7efbc3b7 | 1898 | && !eth_addr_is_reserved(ctx->xin->flow.dl_dst)) { |
46c88433 | 1899 | struct xbundle *xbundle; |
f0fb825a | 1900 | uint16_t old_vid = xvlan.v[0].vid; |
9583bc14 | 1901 | |
f0fb825a | 1902 | xvlan.v[0].vid = out_vlan; |
46c88433 | 1903 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
f0fb825a | 1904 | if (xbundle_includes_vlan(xbundle, &xvlan) |
46c88433 | 1905 | && !xbundle_mirror_out(xbridge, xbundle)) { |
f0fb825a | 1906 | output_normal(ctx, xbundle, &xvlan); |
9583bc14 EJ |
1907 | } |
1908 | } | |
f0fb825a | 1909 | xvlan.v[0].vid = old_vid; |
9583bc14 | 1910 | } |
faa624b4 BP |
1911 | |
1912 | /* output_normal() could have recursively output (to different | |
1913 | * mirrors), so make sure that we don't send duplicates. */ | |
1914 | mirrors &= ~ctx->mirrors; | |
1356dbd1 | 1915 | ctx->mirror_snaplen = 0; |
9583bc14 EJ |
1916 | } |
1917 | } | |
1918 | ||
7efbc3b7 BP |
1919 | static void |
1920 | mirror_ingress_packet(struct xlate_ctx *ctx) | |
1921 | { | |
1922 | if (mbridge_has_mirrors(ctx->xbridge->mbridge)) { | |
7efbc3b7 | 1923 | struct xbundle *xbundle = lookup_input_bundle( |
2d9b49dd | 1924 | ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
7efbc3b7 BP |
1925 | if (xbundle) { |
1926 | mirror_packet(ctx, xbundle, | |
1927 | xbundle_mirror_src(ctx->xbridge, xbundle)); | |
1928 | } | |
1929 | } | |
1930 | } | |
1931 | ||
46c88433 | 1932 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
2d9b49dd | 1933 | * If so, returns true. Otherwise, returns false. |
9583bc14 EJ |
1934 | * |
1935 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1936 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1937 | * 0...4095. */ | |
1938 | static bool | |
2d9b49dd BP |
1939 | input_vid_is_valid(const struct xlate_ctx *ctx, |
1940 | uint16_t vid, struct xbundle *in_xbundle) | |
9583bc14 EJ |
1941 | { |
1942 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1943 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1944 | return true; |
1945 | } | |
1946 | ||
46c88433 | 1947 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1948 | case PORT_VLAN_ACCESS: |
1949 | if (vid) { | |
2d9b49dd BP |
1950 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" tagged " |
1951 | "packet received on port %s configured as VLAN " | |
fd13c6b5 | 1952 | "%d access port", vid, in_xbundle->name, |
2d9b49dd | 1953 | in_xbundle->vlan); |
9583bc14 EJ |
1954 | return false; |
1955 | } | |
1956 | return true; | |
1957 | ||
1958 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1959 | case PORT_VLAN_NATIVE_TAGGED: | |
1960 | if (!vid) { | |
1961 | /* Port must always carry its native VLAN. */ | |
1962 | return true; | |
1963 | } | |
1964 | /* Fall through. */ | |
1965 | case PORT_VLAN_TRUNK: | |
f0fb825a | 1966 | if (!xbundle_trunks_vlan(in_xbundle, vid)) { |
2d9b49dd BP |
1967 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" packet " |
1968 | "received on port %s not configured for " | |
1969 | "trunking VLAN %"PRIu16, | |
1970 | vid, in_xbundle->name, vid); | |
9583bc14 EJ |
1971 | return false; |
1972 | } | |
1973 | return true; | |
1974 | ||
fed8962a EG |
1975 | case PORT_VLAN_DOT1Q_TUNNEL: |
1976 | if (!xbundle_allows_cvlan(in_xbundle, vid)) { | |
1977 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" packet received " | |
1978 | "on dot1q-tunnel port %s that excludes this " | |
1979 | "VLAN", vid, in_xbundle->name); | |
1980 | return false; | |
1981 | } | |
1982 | return true; | |
1983 | ||
9583bc14 | 1984 | default: |
428b2edd | 1985 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1986 | } |
1987 | ||
1988 | } | |
1989 | ||
f0fb825a EG |
1990 | static void |
1991 | xvlan_copy(struct xvlan *dst, const struct xvlan *src) | |
1992 | { | |
1993 | *dst = *src; | |
1994 | } | |
1995 | ||
1996 | static void | |
1997 | xvlan_pop(struct xvlan *src) | |
1998 | { | |
1999 | memmove(&src->v[0], &src->v[1], sizeof(src->v) - sizeof(src->v[0])); | |
2000 | memset(&src->v[FLOW_MAX_VLAN_HEADERS - 1], 0, | |
2001 | sizeof(src->v[FLOW_MAX_VLAN_HEADERS - 1])); | |
2002 | } | |
2003 | ||
fed8962a EG |
2004 | static void |
2005 | xvlan_push_uninit(struct xvlan *src) | |
2006 | { | |
2007 | memmove(&src->v[1], &src->v[0], sizeof(src->v) - sizeof(src->v[0])); | |
2008 | memset(&src->v[0], 0, sizeof(src->v[0])); | |
2009 | } | |
2010 | ||
f0fb825a EG |
2011 | /* Extract VLAN information (headers) from flow */ |
2012 | static void | |
2013 | xvlan_extract(const struct flow *flow, struct xvlan *xvlan) | |
2014 | { | |
2015 | int i; | |
2016 | memset(xvlan, 0, sizeof(*xvlan)); | |
2017 | for (i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { | |
2018 | if (!eth_type_vlan(flow->vlans[i].tpid) || | |
2019 | !(flow->vlans[i].tci & htons(VLAN_CFI))) { | |
2020 | break; | |
2021 | } | |
2022 | xvlan->v[i].tpid = ntohs(flow->vlans[i].tpid); | |
2023 | xvlan->v[i].vid = vlan_tci_to_vid(flow->vlans[i].tci); | |
2024 | xvlan->v[i].pcp = ntohs(flow->vlans[i].tci) & VLAN_PCP_MASK; | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | /* Put VLAN information (headers) to flow */ | |
2029 | static void | |
2030 | xvlan_put(struct flow *flow, const struct xvlan *xvlan) | |
2031 | { | |
2032 | ovs_be16 tci; | |
2033 | int i; | |
2034 | for (i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { | |
2035 | tci = htons(xvlan->v[i].vid | (xvlan->v[i].pcp & VLAN_PCP_MASK)); | |
2036 | if (tci) { | |
2037 | tci |= htons(VLAN_CFI); | |
2038 | flow->vlans[i].tpid = xvlan->v[i].tpid ? | |
2039 | htons(xvlan->v[i].tpid) : | |
2040 | htons(ETH_TYPE_VLAN_8021Q); | |
2041 | } | |
2042 | flow->vlans[i].tci = tci; | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /* Given 'in_xvlan', extracted from the input 802.1Q headers received as part | |
2047 | * of a packet, and 'in_xbundle', the bundle on which the packet was received, | |
2048 | * returns the VLANs of the packet during bridge internal processing. */ | |
2049 | static void | |
2050 | xvlan_input_translate(const struct xbundle *in_xbundle, | |
2051 | const struct xvlan *in_xvlan, struct xvlan *xvlan) | |
2052 | { | |
2053 | ||
2054 | switch (in_xbundle->vlan_mode) { | |
2055 | case PORT_VLAN_ACCESS: | |
2056 | memset(xvlan, 0, sizeof(*xvlan)); | |
2057 | xvlan->v[0].tpid = in_xvlan->v[0].tpid ? in_xvlan->v[0].tpid : | |
2058 | ETH_TYPE_VLAN_8021Q; | |
2059 | xvlan->v[0].vid = in_xbundle->vlan; | |
2060 | xvlan->v[0].pcp = in_xvlan->v[0].pcp; | |
2061 | break; | |
2062 | ||
2063 | case PORT_VLAN_TRUNK: | |
2064 | xvlan_copy(xvlan, in_xvlan); | |
2065 | break; | |
2066 | ||
2067 | case PORT_VLAN_NATIVE_UNTAGGED: | |
2068 | case PORT_VLAN_NATIVE_TAGGED: | |
2069 | xvlan_copy(xvlan, in_xvlan); | |
2070 | if (!in_xvlan->v[0].vid) { | |
2071 | xvlan->v[0].tpid = in_xvlan->v[0].tpid ? in_xvlan->v[0].tpid : | |
2072 | ETH_TYPE_VLAN_8021Q; | |
2073 | xvlan->v[0].vid = in_xbundle->vlan; | |
2074 | xvlan->v[0].pcp = in_xvlan->v[0].pcp; | |
2075 | } | |
2076 | break; | |
2077 | ||
fed8962a EG |
2078 | case PORT_VLAN_DOT1Q_TUNNEL: |
2079 | xvlan_copy(xvlan, in_xvlan); | |
2080 | xvlan_push_uninit(xvlan); | |
2081 | xvlan->v[0].tpid = in_xbundle->qinq_ethtype; | |
2082 | xvlan->v[0].vid = in_xbundle->vlan; | |
2083 | xvlan->v[0].pcp = 0; | |
2084 | break; | |
2085 | ||
f0fb825a EG |
2086 | default: |
2087 | OVS_NOT_REACHED(); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | /* Given 'xvlan', the VLANs of a packet during internal processing, and | |
2092 | * 'out_xbundle', a bundle on which the packet is to be output, returns the | |
2093 | * VLANs that should be included in output packet. */ | |
2094 | static void | |
2095 | xvlan_output_translate(const struct xbundle *out_xbundle, | |
2096 | const struct xvlan *xvlan, struct xvlan *out_xvlan) | |
9583bc14 | 2097 | { |
46c88433 | 2098 | switch (out_xbundle->vlan_mode) { |
9583bc14 | 2099 | case PORT_VLAN_ACCESS: |
f0fb825a EG |
2100 | memset(out_xvlan, 0, sizeof(*out_xvlan)); |
2101 | break; | |
9583bc14 EJ |
2102 | |
2103 | case PORT_VLAN_TRUNK: | |
2104 | case PORT_VLAN_NATIVE_TAGGED: | |
f0fb825a EG |
2105 | xvlan_copy(out_xvlan, xvlan); |
2106 | break; | |
9583bc14 EJ |
2107 | |
2108 | case PORT_VLAN_NATIVE_UNTAGGED: | |
f0fb825a EG |
2109 | xvlan_copy(out_xvlan, xvlan); |
2110 | if (xvlan->v[0].vid == out_xbundle->vlan) { | |
2111 | xvlan_pop(out_xvlan); | |
2112 | } | |
2113 | break; | |
9583bc14 | 2114 | |
fed8962a EG |
2115 | case PORT_VLAN_DOT1Q_TUNNEL: |
2116 | xvlan_copy(out_xvlan, xvlan); | |
2117 | xvlan_pop(out_xvlan); | |
2118 | break; | |
2119 | ||
9583bc14 | 2120 | default: |
428b2edd | 2121 | OVS_NOT_REACHED(); |
9583bc14 EJ |
2122 | } |
2123 | } | |
2124 | ||
fed8962a EG |
2125 | /* If output xbundle is dot1q-tunnel, set mask bits of cvlan */ |
2126 | static void | |
2127 | check_and_set_cvlan_mask(struct flow_wildcards *wc, | |
2128 | const struct xbundle *xbundle) | |
2129 | { | |
2130 | if (xbundle->vlan_mode == PORT_VLAN_DOT1Q_TUNNEL && xbundle->cvlans) { | |
2131 | wc->masks.vlans[1].tci = htons(0xffff); | |
2132 | } | |
2133 | } | |
2134 | ||
9583bc14 | 2135 | static void |
46c88433 | 2136 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
f0fb825a | 2137 | const struct xvlan *xvlan) |
9583bc14 | 2138 | { |
9583bc14 | 2139 | uint16_t vid; |
f0fb825a | 2140 | union flow_vlan_hdr old_vlans[FLOW_MAX_VLAN_HEADERS]; |
46c88433 | 2141 | struct xport *xport; |
e93ef1c7 JR |
2142 | struct xlate_bond_recirc xr; |
2143 | bool use_recirc = false; | |
f0fb825a | 2144 | struct xvlan out_xvlan; |
9583bc14 | 2145 | |
fed8962a EG |
2146 | check_and_set_cvlan_mask(ctx->wc, out_xbundle); |
2147 | ||
f0fb825a EG |
2148 | xvlan_output_translate(out_xbundle, xvlan, &out_xvlan); |
2149 | if (out_xbundle->use_priority_tags) { | |
2150 | out_xvlan.v[0].pcp = ntohs(ctx->xin->flow.vlans[0].tci) & | |
2151 | VLAN_PCP_MASK; | |
2152 | } | |
2153 | vid = out_xvlan.v[0].vid; | |
417e7e66 | 2154 | if (ovs_list_is_empty(&out_xbundle->xports)) { |
46c88433 EJ |
2155 | /* Partially configured bundle with no slaves. Drop the packet. */ |
2156 | return; | |
2157 | } else if (!out_xbundle->bond) { | |
417e7e66 | 2158 | xport = CONTAINER_OF(ovs_list_front(&out_xbundle->xports), struct xport, |
46c88433 | 2159 | bundle_node); |
9583bc14 | 2160 | } else { |
84f0f298 | 2161 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
49a73e0c | 2162 | struct flow_wildcards *wc = ctx->wc; |
84f0f298 | 2163 | struct ofport_dpif *ofport; |
adcf00ba | 2164 | |
a80aba3a AZ |
2165 | if (ctx->xbridge->support.odp.recirc) { |
2166 | /* In case recirculation is not actually in use, 'xr.recirc_id' | |
2167 | * will be set to '0', since a valid 'recirc_id' can | |
82f9f1f5 AZ |
2168 | * not be zero. */ |
2169 | bond_update_post_recirc_rules(out_xbundle->bond, | |
2170 | &xr.recirc_id, | |
2171 | &xr.hash_basis); | |
2172 | if (xr.recirc_id) { | |
2173 | /* Use recirculation instead of output. */ | |
2174 | use_recirc = true; | |
e93ef1c7 | 2175 | xr.hash_alg = OVS_HASH_ALG_L4; |
54ecb5a2 AZ |
2176 | /* Recirculation does not require unmasking hash fields. */ |
2177 | wc = NULL; | |
adcf00ba AZ |
2178 | } |
2179 | } | |
46c88433 | 2180 | |
54ecb5a2 AZ |
2181 | ofport = bond_choose_output_slave(out_xbundle->bond, |
2182 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 2183 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
2184 | |
2185 | if (!xport) { | |
9583bc14 EJ |
2186 | /* No slaves enabled, so drop packet. */ |
2187 | return; | |
2188 | } | |
d6fc5f57 | 2189 | |
e93ef1c7 | 2190 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 2191 | * accounting for this bond. */ |
e93ef1c7 | 2192 | if (!use_recirc) { |
b256dc52 JS |
2193 | if (ctx->xin->resubmit_stats) { |
2194 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
2195 | ctx->xin->resubmit_stats->n_bytes); | |
2196 | } | |
2197 | if (ctx->xin->xcache) { | |
2198 | struct xc_entry *entry; | |
2199 | struct flow *flow; | |
2200 | ||
2201 | flow = &ctx->xin->flow; | |
2202 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
901a517e JR |
2203 | entry->bond.bond = bond_ref(out_xbundle->bond); |
2204 | entry->bond.flow = xmemdup(flow, sizeof *flow); | |
2205 | entry->bond.vid = vid; | |
b256dc52 | 2206 | } |
d6fc5f57 | 2207 | } |
9583bc14 EJ |
2208 | } |
2209 | ||
f0fb825a EG |
2210 | memcpy(&old_vlans, &ctx->xin->flow.vlans, sizeof(old_vlans)); |
2211 | xvlan_put(&ctx->xin->flow, &out_xvlan); | |
9583bc14 | 2212 | |
e93ef1c7 | 2213 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
f0fb825a | 2214 | memcpy(&ctx->xin->flow.vlans, &old_vlans, sizeof(old_vlans)); |
9583bc14 EJ |
2215 | } |
2216 | ||
2217 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
2218 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
2219 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
2220 | static bool | |
2221 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
2222 | { | |
2223 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
2224 | return false; | |
2225 | } | |
2226 | ||
2227 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
2228 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
2229 | return false; | |
2230 | } | |
2231 | ||
2232 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
2233 | if (flow->nw_proto == ARP_OP_REPLY) { | |
2234 | return true; | |
2235 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
2236 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
2237 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2238 | ||
2239 | return flow->nw_src == flow->nw_dst; | |
2240 | } else { | |
2241 | return false; | |
2242 | } | |
2243 | } | |
2244 | ||
ff69c24a FL |
2245 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
2246 | * dropped. Returns true if they may be forwarded, false if they should be | |
2247 | * dropped. | |
2248 | * | |
2249 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
2250 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
2251 | * | |
2252 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
2253 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
2254 | * checked by input_vid_is_valid(). | |
2255 | * | |
2256 | * May also add tags to '*tags', although the current implementation only does | |
2257 | * so in one special case. | |
2258 | */ | |
2259 | static bool | |
2260 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
2261 | uint16_t vlan) | |
2262 | { | |
2263 | struct xbundle *in_xbundle = in_port->xbundle; | |
2264 | const struct xbridge *xbridge = ctx->xbridge; | |
2265 | struct flow *flow = &ctx->xin->flow; | |
2266 | ||
2267 | /* Drop frames for reserved multicast addresses | |
2268 | * only if forward_bpdu option is absent. */ | |
2269 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
2d9b49dd BP |
2270 | xlate_report(ctx, OFT_DETAIL, |
2271 | "packet has reserved destination MAC, dropping"); | |
ff69c24a FL |
2272 | return false; |
2273 | } | |
2274 | ||
2275 | if (in_xbundle->bond) { | |
2276 | struct mac_entry *mac; | |
2277 | ||
2278 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
2279 | flow->dl_dst)) { | |
2280 | case BV_ACCEPT: | |
2281 | break; | |
2282 | ||
2283 | case BV_DROP: | |
2d9b49dd BP |
2284 | xlate_report(ctx, OFT_DETAIL, |
2285 | "bonding refused admissibility, dropping"); | |
ff69c24a FL |
2286 | return false; |
2287 | ||
2288 | case BV_DROP_IF_MOVED: | |
2289 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
2290 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
2291 | if (mac |
2292 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
49a73e0c | 2293 | && (!is_gratuitous_arp(flow, ctx->wc) |
9d078ec2 | 2294 | || mac_entry_is_grat_arp_locked(mac))) { |
ff69c24a | 2295 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
2d9b49dd BP |
2296 | xlate_report(ctx, OFT_DETAIL, |
2297 | "SLB bond thinks this packet looped back, " | |
ff69c24a FL |
2298 | "dropping"); |
2299 | return false; | |
2300 | } | |
2301 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
2302 | break; | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | return true; | |
2307 | } | |
2308 | ||
2d9b49dd BP |
2309 | static bool |
2310 | update_learning_table__(const struct xbridge *xbridge, | |
2311 | struct xbundle *in_xbundle, struct eth_addr dl_src, | |
2312 | int vlan, bool is_grat_arp) | |
2313 | { | |
2314 | return (in_xbundle == &ofpp_none_bundle | |
2315 | || !mac_learning_update(xbridge->ml, dl_src, vlan, | |
2316 | is_grat_arp, | |
2317 | in_xbundle->bond != NULL, | |
2318 | in_xbundle->ofbundle)); | |
2319 | } | |
2320 | ||
ee047520 | 2321 | static void |
2d9b49dd | 2322 | update_learning_table(const struct xlate_ctx *ctx, |
064799a1 JR |
2323 | struct xbundle *in_xbundle, struct eth_addr dl_src, |
2324 | int vlan, bool is_grat_arp) | |
ee047520 | 2325 | { |
2d9b49dd BP |
2326 | if (!update_learning_table__(ctx->xbridge, in_xbundle, dl_src, vlan, |
2327 | is_grat_arp)) { | |
2328 | xlate_report_debug(ctx, OFT_DETAIL, "learned that "ETH_ADDR_FMT" is " | |
2329 | "on port %s in VLAN %d", | |
2330 | ETH_ADDR_ARGS(dl_src), in_xbundle->name, vlan); | |
ee047520 | 2331 | } |
9583bc14 EJ |
2332 | } |
2333 | ||
86e2dcdd FL |
2334 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2335 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
2336 | static void | |
2d9b49dd | 2337 | update_mcast_snooping_table4__(const struct xlate_ctx *ctx, |
06994f87 TLSC |
2338 | const struct flow *flow, |
2339 | struct mcast_snooping *ms, int vlan, | |
2340 | struct xbundle *in_xbundle, | |
2341 | const struct dp_packet *packet) | |
86e2dcdd FL |
2342 | OVS_REQ_WRLOCK(ms->rwlock) |
2343 | { | |
46445c63 | 2344 | const struct igmp_header *igmp; |
e3102e42 | 2345 | int count; |
46445c63 | 2346 | size_t offset; |
06994f87 | 2347 | ovs_be32 ip4 = flow->igmp_group_ip4; |
86e2dcdd | 2348 | |
46445c63 EC |
2349 | offset = (char *) dp_packet_l4(packet) - (char *) dp_packet_data(packet); |
2350 | igmp = dp_packet_at(packet, offset, IGMP_HEADER_LEN); | |
2351 | if (!igmp || csum(igmp, dp_packet_l4_size(packet)) != 0) { | |
2d9b49dd BP |
2352 | xlate_report_debug(ctx, OFT_DETAIL, |
2353 | "multicast snooping received bad IGMP " | |
2354 | "checksum on port %s in VLAN %d", | |
2355 | in_xbundle->name, vlan); | |
46445c63 EC |
2356 | return; |
2357 | } | |
2358 | ||
86e2dcdd FL |
2359 | switch (ntohs(flow->tp_src)) { |
2360 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2361 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
964a4d5f | 2362 | if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
2d9b49dd BP |
2363 | xlate_report_debug(ctx, OFT_DETAIL, |
2364 | "multicast snooping learned that " | |
2365 | IP_FMT" is on port %s in VLAN %d", | |
2366 | IP_ARGS(ip4), in_xbundle->name, vlan); | |
86e2dcdd FL |
2367 | } |
2368 | break; | |
2369 | case IGMP_HOST_LEAVE_MESSAGE: | |
964a4d5f | 2370 | if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
2d9b49dd BP |
2371 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping leaving " |
2372 | IP_FMT" is on port %s in VLAN %d", | |
2373 | IP_ARGS(ip4), in_xbundle->name, vlan); | |
86e2dcdd FL |
2374 | } |
2375 | break; | |
2376 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2377 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2d9b49dd BP |
2378 | in_xbundle->ofbundle)) { |
2379 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping query " | |
2380 | "from "IP_FMT" is on port %s in VLAN %d", | |
2381 | IP_ARGS(flow->nw_src), in_xbundle->name, vlan); | |
86e2dcdd FL |
2382 | } |
2383 | break; | |
e3102e42 | 2384 | case IGMPV3_HOST_MEMBERSHIP_REPORT: |
2d9b49dd BP |
2385 | count = mcast_snooping_add_report(ms, packet, vlan, |
2386 | in_xbundle->ofbundle); | |
2387 | if (count) { | |
2388 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping processed " | |
2389 | "%d addresses on port %s in VLAN %d", | |
2390 | count, in_xbundle->name, vlan); | |
e3102e42 TLSC |
2391 | } |
2392 | break; | |
86e2dcdd FL |
2393 | } |
2394 | } | |
2395 | ||
06994f87 | 2396 | static void |
2d9b49dd | 2397 | update_mcast_snooping_table6__(const struct xlate_ctx *ctx, |
06994f87 TLSC |
2398 | const struct flow *flow, |
2399 | struct mcast_snooping *ms, int vlan, | |
2400 | struct xbundle *in_xbundle, | |
2401 | const struct dp_packet *packet) | |
2402 | OVS_REQ_WRLOCK(ms->rwlock) | |
2403 | { | |
46445c63 | 2404 | const struct mld_header *mld; |
06994f87 | 2405 | int count; |
46445c63 EC |
2406 | size_t offset; |
2407 | ||
2408 | offset = (char *) dp_packet_l4(packet) - (char *) dp_packet_data(packet); | |
2409 | mld = dp_packet_at(packet, offset, MLD_HEADER_LEN); | |
2410 | ||
2411 | if (!mld || | |
2412 | packet_csum_upperlayer6(dp_packet_l3(packet), | |
2413 | mld, IPPROTO_ICMPV6, | |
2414 | dp_packet_l4_size(packet)) != 0) { | |
2d9b49dd BP |
2415 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping received " |
2416 | "bad MLD checksum on port %s in VLAN %d", | |
2417 | in_xbundle->name, vlan); | |
46445c63 EC |
2418 | return; |
2419 | } | |
06994f87 TLSC |
2420 | |
2421 | switch (ntohs(flow->tp_src)) { | |
2422 | case MLD_QUERY: | |
2423 | if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any) | |
2424 | && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) { | |
2d9b49dd BP |
2425 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping query on " |
2426 | "port %s in VLAN %d", in_xbundle->name, vlan); | |
06994f87 TLSC |
2427 | } |
2428 | break; | |
2429 | case MLD_REPORT: | |
2430 | case MLD_DONE: | |
2431 | case MLD2_REPORT: | |
2432 | count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle); | |
2433 | if (count) { | |
2d9b49dd BP |
2434 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping processed " |
2435 | "%d addresses on port %s in VLAN %d", | |
2436 | count, in_xbundle->name, vlan); | |
06994f87 TLSC |
2437 | } |
2438 | break; | |
2439 | } | |
2440 | } | |
2441 | ||
86e2dcdd FL |
2442 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2443 | * was received on 'in_xbundle' in 'vlan'. */ | |
2444 | static void | |
2d9b49dd | 2445 | update_mcast_snooping_table(const struct xlate_ctx *ctx, |
86e2dcdd | 2446 | const struct flow *flow, int vlan, |
e3102e42 TLSC |
2447 | struct xbundle *in_xbundle, |
2448 | const struct dp_packet *packet) | |
86e2dcdd | 2449 | { |
2d9b49dd | 2450 | struct mcast_snooping *ms = ctx->xbridge->ms; |
86e2dcdd FL |
2451 | struct xlate_cfg *xcfg; |
2452 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2453 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2454 | |
2455 | /* Don't learn the OFPP_NONE port. */ | |
2456 | if (in_xbundle == &ofpp_none_bundle) { | |
2457 | return; | |
2458 | } | |
2459 | ||
2460 | /* Don't learn from flood ports */ | |
2461 | mcast_xbundle = NULL; | |
2462 | ovs_rwlock_wrlock(&ms->rwlock); | |
2463 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2464 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2465 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2466 | if (mcast_xbundle == in_xbundle) { | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | ||
2471 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
06994f87 | 2472 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2d9b49dd | 2473 | update_mcast_snooping_table4__(ctx, flow, ms, vlan, |
06994f87 TLSC |
2474 | in_xbundle, packet); |
2475 | } else { | |
2d9b49dd | 2476 | update_mcast_snooping_table6__(ctx, flow, ms, vlan, |
06994f87 TLSC |
2477 | in_xbundle, packet); |
2478 | } | |
86e2dcdd FL |
2479 | } |
2480 | ovs_rwlock_unlock(&ms->rwlock); | |
2481 | } | |
2482 | ||
2483 | /* send the packet to ports having the multicast group learned */ | |
2484 | static void | |
2485 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2486 | struct mcast_snooping *ms OVS_UNUSED, | |
2487 | struct mcast_group *grp, | |
f0fb825a EG |
2488 | struct xbundle *in_xbundle, |
2489 | const struct xvlan *xvlan) | |
86e2dcdd FL |
2490 | OVS_REQ_RDLOCK(ms->rwlock) |
2491 | { | |
2492 | struct xlate_cfg *xcfg; | |
2493 | struct mcast_group_bundle *b; | |
2494 | struct xbundle *mcast_xbundle; | |
2495 | ||
2496 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2497 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2498 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2499 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd | 2500 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast group port"); |
f0fb825a | 2501 | output_normal(ctx, mcast_xbundle, xvlan); |
86e2dcdd | 2502 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2503 | xlate_report(ctx, OFT_WARN, |
2504 | "mcast group port is unknown, dropping"); | |
86e2dcdd | 2505 | } else { |
2d9b49dd BP |
2506 | xlate_report(ctx, OFT_DETAIL, |
2507 | "mcast group port is input port, dropping"); | |
86e2dcdd FL |
2508 | } |
2509 | } | |
2510 | } | |
2511 | ||
2512 | /* send the packet to ports connected to multicast routers */ | |
2513 | static void | |
2514 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2515 | struct mcast_snooping *ms, | |
f0fb825a EG |
2516 | struct xbundle *in_xbundle, |
2517 | const struct xvlan *xvlan) | |
86e2dcdd FL |
2518 | OVS_REQ_RDLOCK(ms->rwlock) |
2519 | { | |
2520 | struct xlate_cfg *xcfg; | |
2521 | struct mcast_mrouter_bundle *mrouter; | |
2522 | struct xbundle *mcast_xbundle; | |
2523 | ||
2524 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2525 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2526 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
94a881c1 | 2527 | if (mcast_xbundle && mcast_xbundle != in_xbundle |
f0fb825a | 2528 | && mrouter->vlan == xvlan->v[0].vid) { |
2d9b49dd | 2529 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast router port"); |
f0fb825a | 2530 | output_normal(ctx, mcast_xbundle, xvlan); |
86e2dcdd | 2531 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2532 | xlate_report(ctx, OFT_WARN, |
2533 | "mcast router port is unknown, dropping"); | |
f0fb825a | 2534 | } else if (mrouter->vlan != xvlan->v[0].vid) { |
2d9b49dd BP |
2535 | xlate_report(ctx, OFT_DETAIL, |
2536 | "mcast router is on another vlan, dropping"); | |
86e2dcdd | 2537 | } else { |
2d9b49dd BP |
2538 | xlate_report(ctx, OFT_DETAIL, |
2539 | "mcast router port is input port, dropping"); | |
86e2dcdd FL |
2540 | } |
2541 | } | |
2542 | } | |
2543 | ||
2544 | /* send the packet to ports flagged to be flooded */ | |
2545 | static void | |
2546 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2547 | struct mcast_snooping *ms, | |
f0fb825a EG |
2548 | struct xbundle *in_xbundle, |
2549 | const struct xvlan *xvlan) | |
86e2dcdd FL |
2550 | OVS_REQ_RDLOCK(ms->rwlock) |
2551 | { | |
2552 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2553 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2554 | struct xbundle *mcast_xbundle; |
2555 | ||
2556 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2557 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2558 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2559 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd | 2560 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast flood port"); |
f0fb825a | 2561 | output_normal(ctx, mcast_xbundle, xvlan); |
86e2dcdd | 2562 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2563 | xlate_report(ctx, OFT_WARN, |
2564 | "mcast flood port is unknown, dropping"); | |
86e2dcdd | 2565 | } else { |
2d9b49dd BP |
2566 | xlate_report(ctx, OFT_DETAIL, |
2567 | "mcast flood port is input port, dropping"); | |
86e2dcdd FL |
2568 | } |
2569 | } | |
2570 | } | |
2571 | ||
8e04a33f FL |
2572 | /* forward the Reports to configured ports */ |
2573 | static void | |
2574 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2575 | struct mcast_snooping *ms, | |
f0fb825a EG |
2576 | struct xbundle *in_xbundle, |
2577 | const struct xvlan *xvlan) | |
8e04a33f FL |
2578 | OVS_REQ_RDLOCK(ms->rwlock) |
2579 | { | |
2580 | struct xlate_cfg *xcfg; | |
2581 | struct mcast_port_bundle *rport; | |
2582 | struct xbundle *mcast_xbundle; | |
2583 | ||
2584 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2585 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2586 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2587 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd BP |
2588 | xlate_report(ctx, OFT_DETAIL, |
2589 | "forwarding report to mcast flagged port"); | |
f0fb825a | 2590 | output_normal(ctx, mcast_xbundle, xvlan); |
8e04a33f | 2591 | } else if (!mcast_xbundle) { |
2d9b49dd BP |
2592 | xlate_report(ctx, OFT_WARN, |
2593 | "mcast port is unknown, dropping the report"); | |
8e04a33f | 2594 | } else { |
2d9b49dd BP |
2595 | xlate_report(ctx, OFT_DETAIL, |
2596 | "mcast port is input port, dropping the Report"); | |
8e04a33f FL |
2597 | } |
2598 | } | |
2599 | } | |
2600 | ||
682800a4 FL |
2601 | static void |
2602 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
f0fb825a | 2603 | struct xvlan *xvlan) |
682800a4 FL |
2604 | { |
2605 | struct xbundle *xbundle; | |
2606 | ||
2607 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2608 | if (xbundle != in_xbundle | |
f0fb825a | 2609 | && xbundle_includes_vlan(xbundle, xvlan) |
682800a4 FL |
2610 | && xbundle->floodable |
2611 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
f0fb825a | 2612 | output_normal(ctx, xbundle, xvlan); |
682800a4 FL |
2613 | } |
2614 | } | |
2031ef97 | 2615 | ctx->nf_output_iface = NF_OUT_FLOOD; |
682800a4 FL |
2616 | } |
2617 | ||
a75636c8 BP |
2618 | static bool |
2619 | is_ip_local_multicast(const struct flow *flow, struct flow_wildcards *wc) | |
2620 | { | |
2621 | if (flow->dl_type == htons(ETH_TYPE_IP)) { | |
2622 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2623 | return ip_is_local_multicast(flow->nw_dst); | |
2624 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2625 | memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst); | |
2626 | return ipv6_is_all_hosts(&flow->ipv6_dst); | |
2627 | } else { | |
2628 | return false; | |
2629 | } | |
2630 | } | |
2631 | ||
9583bc14 EJ |
2632 | static void |
2633 | xlate_normal(struct xlate_ctx *ctx) | |
2634 | { | |
49a73e0c | 2635 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2636 | struct flow *flow = &ctx->xin->flow; |
46c88433 EJ |
2637 | struct xbundle *in_xbundle; |
2638 | struct xport *in_port; | |
9583bc14 | 2639 | struct mac_entry *mac; |
d6d5bbc9 | 2640 | void *mac_port; |
f0fb825a EG |
2641 | struct xvlan in_xvlan; |
2642 | struct xvlan xvlan; | |
9583bc14 | 2643 | uint16_t vlan; |
9583bc14 | 2644 | |
33bf9176 BP |
2645 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2646 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
f0fb825a | 2647 | wc->masks.vlans[0].tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2648 | |
2d9b49dd | 2649 | in_xbundle = lookup_input_bundle(ctx, flow->in_port.ofp_port, &in_port); |
46c88433 | 2650 | if (!in_xbundle) { |
2d9b49dd | 2651 | xlate_report(ctx, OFT_WARN, "no input bundle, dropping"); |
9583bc14 EJ |
2652 | return; |
2653 | } | |
2654 | ||
2655 | /* Drop malformed frames. */ | |
f0fb825a EG |
2656 | if (eth_type_vlan(flow->dl_type) && |
2657 | !(flow->vlans[0].tci & htons(VLAN_CFI))) { | |
9583bc14 | 2658 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
2659 | xlate_report_error(ctx, "dropping packet with partial " |
2660 | "VLAN tag received on port %s", | |
2661 | in_xbundle->name); | |
9583bc14 | 2662 | } |
2d9b49dd | 2663 | xlate_report(ctx, OFT_WARN, "partial VLAN tag, dropping"); |
9583bc14 EJ |
2664 | return; |
2665 | } | |
2666 | ||
2667 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2668 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 | 2669 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
2670 | xlate_report_error(ctx, "dropping packet received on port %s, " |
2671 | "which is reserved exclusively for mirroring", | |
2672 | in_xbundle->name); | |
9583bc14 | 2673 | } |
2d9b49dd BP |
2674 | xlate_report(ctx, OFT_WARN, |
2675 | "input port is mirror output port, dropping"); | |
9583bc14 EJ |
2676 | return; |
2677 | } | |
2678 | ||
2679 | /* Check VLAN. */ | |
f0fb825a EG |
2680 | xvlan_extract(flow, &in_xvlan); |
2681 | if (!input_vid_is_valid(ctx, in_xvlan.v[0].vid, in_xbundle)) { | |
2d9b49dd BP |
2682 | xlate_report(ctx, OFT_WARN, |
2683 | "disallowed VLAN VID for this input port, dropping"); | |
9583bc14 EJ |
2684 | return; |
2685 | } | |
f0fb825a EG |
2686 | xvlan_input_translate(in_xbundle, &in_xvlan, &xvlan); |
2687 | vlan = xvlan.v[0].vid; | |
9583bc14 EJ |
2688 | |
2689 | /* Check other admissibility requirements. */ | |
2690 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2691 | return; | |
2692 | } | |
2693 | ||
2694 | /* Learn source MAC. */ | |
064799a1 | 2695 | bool is_grat_arp = is_gratuitous_arp(flow, wc); |
df70a773 | 2696 | if (ctx->xin->allow_side_effects) { |
2d9b49dd | 2697 | update_learning_table(ctx, in_xbundle, flow->dl_src, vlan, |
064799a1 | 2698 | is_grat_arp); |
9583bc14 | 2699 | } |
064799a1 | 2700 | if (ctx->xin->xcache && in_xbundle != &ofpp_none_bundle) { |
b256dc52 JS |
2701 | struct xc_entry *entry; |
2702 | ||
064799a1 | 2703 | /* Save just enough info to update mac learning table later. */ |
b256dc52 | 2704 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); |
901a517e JR |
2705 | entry->normal.ofproto = ctx->xbridge->ofproto; |
2706 | entry->normal.in_port = flow->in_port.ofp_port; | |
2707 | entry->normal.dl_src = flow->dl_src; | |
2708 | entry->normal.vlan = vlan; | |
2709 | entry->normal.is_gratuitous_arp = is_grat_arp; | |
b256dc52 | 2710 | } |
9583bc14 EJ |
2711 | |
2712 | /* Determine output bundle. */ | |
86e2dcdd FL |
2713 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2714 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2715 | && eth_addr_is_multicast(flow->dl_dst) | |
06994f87 | 2716 | && is_ip_any(flow)) { |
86e2dcdd | 2717 | struct mcast_snooping *ms = ctx->xbridge->ms; |
06994f87 | 2718 | struct mcast_group *grp = NULL; |
86e2dcdd | 2719 | |
a75636c8 BP |
2720 | if (is_igmp(flow, wc)) { |
2721 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
d29f137b TLSC |
2722 | if (mcast_snooping_is_membership(flow->tp_src) || |
2723 | mcast_snooping_is_query(flow->tp_src)) { | |
df70a773 | 2724 | if (ctx->xin->allow_side_effects && ctx->xin->packet) { |
2d9b49dd | 2725 | update_mcast_snooping_table(ctx, flow, vlan, |
e3102e42 | 2726 | in_xbundle, ctx->xin->packet); |
d29f137b TLSC |
2727 | } |
2728 | /* | |
2729 | * IGMP packets need to take the slow path, in order to be | |
2730 | * processed for mdb updates. That will prevent expires | |
2731 | * firing off even after hosts have sent reports. | |
2732 | */ | |
2733 | ctx->xout->slow |= SLOW_ACTION; | |
86e2dcdd | 2734 | } |
d6d5bbc9 | 2735 | |
86e2dcdd FL |
2736 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2737 | ovs_rwlock_rdlock(&ms->rwlock); | |
f0fb825a | 2738 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); |
8e04a33f FL |
2739 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2740 | * forward IGMP Membership Reports only to those ports where | |
2741 | * multicast routers are attached. Alternatively stated: a | |
2742 | * snooping switch should not forward IGMP Membership Reports | |
2743 | * to ports on which only hosts are attached. | |
2744 | * An administrative control may be provided to override this | |
2745 | * restriction, allowing the report messages to be flooded to | |
2746 | * other ports. */ | |
f0fb825a | 2747 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, &xvlan); |
86e2dcdd FL |
2748 | ovs_rwlock_unlock(&ms->rwlock); |
2749 | } else { | |
2d9b49dd | 2750 | xlate_report(ctx, OFT_DETAIL, "multicast traffic, flooding"); |
f0fb825a | 2751 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd FL |
2752 | } |
2753 | return; | |
a75636c8 | 2754 | } else if (is_mld(flow, wc)) { |
06994f87 | 2755 | ctx->xout->slow |= SLOW_ACTION; |
df70a773 | 2756 | if (ctx->xin->allow_side_effects && ctx->xin->packet) { |
2d9b49dd | 2757 | update_mcast_snooping_table(ctx, flow, vlan, |
06994f87 TLSC |
2758 | in_xbundle, ctx->xin->packet); |
2759 | } | |
a75636c8 | 2760 | if (is_mld_report(flow, wc)) { |
06994f87 | 2761 | ovs_rwlock_rdlock(&ms->rwlock); |
f0fb825a EG |
2762 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); |
2763 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, &xvlan); | |
06994f87 TLSC |
2764 | ovs_rwlock_unlock(&ms->rwlock); |
2765 | } else { | |
2d9b49dd | 2766 | xlate_report(ctx, OFT_DETAIL, "MLD query, flooding"); |
f0fb825a | 2767 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
06994f87 | 2768 | } |
86e2dcdd | 2769 | } else { |
a75636c8 | 2770 | if (is_ip_local_multicast(flow, wc)) { |
86e2dcdd FL |
2771 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP |
2772 | * address in the 224.0.0.x range which are not IGMP must | |
2773 | * be forwarded on all ports */ | |
2d9b49dd BP |
2774 | xlate_report(ctx, OFT_DETAIL, |
2775 | "RFC4541: section 2.1.2, item 2, flooding"); | |
f0fb825a | 2776 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd FL |
2777 | return; |
2778 | } | |
2779 | } | |
2780 | ||
2781 | /* forwarding to group base ports */ | |
2782 | ovs_rwlock_rdlock(&ms->rwlock); | |
06994f87 TLSC |
2783 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2784 | grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan); | |
2785 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2786 | grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan); | |
2787 | } | |
86e2dcdd | 2788 | if (grp) { |
f0fb825a EG |
2789 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, &xvlan); |
2790 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, &xvlan); | |
2791 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); | |
9583bc14 | 2792 | } else { |
86e2dcdd | 2793 | if (mcast_snooping_flood_unreg(ms)) { |
2d9b49dd BP |
2794 | xlate_report(ctx, OFT_DETAIL, |
2795 | "unregistered multicast, flooding"); | |
f0fb825a | 2796 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd | 2797 | } else { |
f0fb825a EG |
2798 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, &xvlan); |
2799 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, &xvlan); | |
86e2dcdd | 2800 | } |
9583bc14 | 2801 | } |
86e2dcdd | 2802 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2803 | } else { |
86e2dcdd FL |
2804 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2805 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2806 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2807 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2808 | ||
2809 | if (mac_port) { | |
2810 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2811 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2812 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2d9b49dd | 2813 | xlate_report(ctx, OFT_DETAIL, "forwarding to learned port"); |
f0fb825a | 2814 | output_normal(ctx, mac_xbundle, &xvlan); |
86e2dcdd | 2815 | } else if (!mac_xbundle) { |
2d9b49dd BP |
2816 | xlate_report(ctx, OFT_WARN, |
2817 | "learned port is unknown, dropping"); | |
86e2dcdd | 2818 | } else { |
2d9b49dd BP |
2819 | xlate_report(ctx, OFT_DETAIL, |
2820 | "learned port is input port, dropping"); | |
86e2dcdd FL |
2821 | } |
2822 | } else { | |
2d9b49dd BP |
2823 | xlate_report(ctx, OFT_DETAIL, |
2824 | "no learned MAC for destination, flooding"); | |
f0fb825a | 2825 | xlate_normal_flood(ctx, in_xbundle, &xvlan); |
86e2dcdd | 2826 | } |
9583bc14 EJ |
2827 | } |
2828 | } | |
2829 | ||
a6092018 BP |
2830 | /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The |
2831 | * 'probability' is the number of packets out of UINT32_MAX to sample. The | |
2832 | * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for | |
2833 | * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the | |
2834 | * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an | |
f69f713b BY |
2835 | * OVS_USERSPACE_ATTR_ACTIONS attribute is added. If 'emit_set_tunnel', |
2836 | * sample(sampling_port=1) would translate into datapath sample action | |
2837 | * set(tunnel(...)), sample(...) and it is used for sampling egress tunnel | |
2838 | * information. | |
9583bc14 EJ |
2839 | */ |
2840 | static size_t | |
a6092018 | 2841 | compose_sample_action(struct xlate_ctx *ctx, |
9583bc14 EJ |
2842 | const uint32_t probability, |
2843 | const union user_action_cookie *cookie, | |
8b7ea2d4 | 2844 | const size_t cookie_size, |
7321bda3 NM |
2845 | const odp_port_t tunnel_out_port, |
2846 | bool include_actions) | |
9583bc14 | 2847 | { |
b97f2c3a BY |
2848 | if (probability == 0) { |
2849 | /* No need to generate sampling or the inner action. */ | |
2850 | return 0; | |
2851 | } | |
2852 | ||
31b29c2e AZ |
2853 | /* If the slow path meter is configured by the controller, |
2854 | * insert a meter action before the user space action. */ | |
2855 | struct ofproto *ofproto = &ctx->xin->ofproto->up; | |
2856 | uint32_t meter_id = ofproto->slowpath_meter_id; | |
2857 | ||
2858 | /* When meter action is not required, avoid generate sample action | |
2859 | * for 100% sampling rate. */ | |
2860 | bool is_sample = probability < UINT32_MAX || meter_id != UINT32_MAX; | |
72471622 BY |
2861 | size_t sample_offset, actions_offset; |
2862 | if (is_sample) { | |
2863 | sample_offset = nl_msg_start_nested(ctx->odp_actions, | |
2864 | OVS_ACTION_ATTR_SAMPLE); | |
2865 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
2866 | probability); | |
2867 | actions_offset = nl_msg_start_nested(ctx->odp_actions, | |
2868 | OVS_SAMPLE_ATTR_ACTIONS); | |
2869 | } | |
9583bc14 | 2870 | |
31b29c2e AZ |
2871 | if (meter_id != UINT32_MAX) { |
2872 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_METER, meter_id); | |
2873 | } | |
2874 | ||
a6092018 BP |
2875 | odp_port_t odp_port = ofp_port_to_odp_port( |
2876 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port); | |
2877 | uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port, | |
2878 | flow_hash_5tuple(&ctx->xin->flow, 0)); | |
2879 | int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2880 | tunnel_out_port, | |
2881 | include_actions, | |
2882 | ctx->odp_actions); | |
89a8a7f0 | 2883 | |
72471622 BY |
2884 | if (is_sample) { |
2885 | nl_msg_end_nested(ctx->odp_actions, actions_offset); | |
2886 | nl_msg_end_nested(ctx->odp_actions, sample_offset); | |
2887 | } | |
9583bc14 | 2888 | |
9583bc14 EJ |
2889 | return cookie_offset; |
2890 | } | |
2891 | ||
a6092018 BP |
2892 | /* If sFLow is not enabled, returns 0 without doing anything. |
2893 | * | |
2894 | * If sFlow is enabled, appends a template "sample" action to the ODP actions | |
2895 | * in 'ctx'. This action is a template because some of the information needed | |
2896 | * to fill it out is not available until flow translation is complete. In this | |
2897 | * case, this functions returns an offset, which is always nonzero, to pass | |
2898 | * later to fix_sflow_action() to fill in the rest of the template. */ | |
9583bc14 | 2899 | static size_t |
a6092018 | 2900 | compose_sflow_action(struct xlate_ctx *ctx) |
9583bc14 | 2901 | { |
a6092018 BP |
2902 | struct dpif_sflow *sflow = ctx->xbridge->sflow; |
2903 | if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
9583bc14 EJ |
2904 | return 0; |
2905 | } | |
2906 | ||
a6092018 BP |
2907 | union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW }; |
2908 | return compose_sample_action(ctx, dpif_sflow_get_probability(sflow), | |
7321bda3 NM |
2909 | &cookie, sizeof cookie.sflow, ODPP_NONE, |
2910 | true); | |
9583bc14 EJ |
2911 | } |
2912 | ||
f69f713b BY |
2913 | /* If flow IPFIX is enabled, make sure IPFIX flow sample action |
2914 | * at egress point of tunnel port is just in front of corresponding | |
2915 | * output action. If bridge IPFIX is enabled, this appends an IPFIX | |
2916 | * sample action to 'ctx->odp_actions'. */ | |
9583bc14 | 2917 | static void |
a6092018 | 2918 | compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port) |
9583bc14 | 2919 | { |
a6092018 | 2920 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; |
8b7ea2d4 | 2921 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2922 | |
a6092018 | 2923 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2924 | return; |
2925 | } | |
2926 | ||
8b7ea2d4 WZ |
2927 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2928 | * number. */ | |
2929 | if (output_odp_port == ODPP_NONE && | |
a6092018 | 2930 | !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) { |
8b7ea2d4 WZ |
2931 | return; |
2932 | } | |
2933 | ||
f69f713b | 2934 | /* For output case, output_odp_port is valid. */ |
8b7ea2d4 | 2935 | if (output_odp_port != ODPP_NONE) { |
a6092018 | 2936 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) { |
8b7ea2d4 WZ |
2937 | return; |
2938 | } | |
2939 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2940 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2941 | */ | |
a6092018 BP |
2942 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) && |
2943 | dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) { | |
8b7ea2d4 WZ |
2944 | tunnel_out_port = output_odp_port; |
2945 | } | |
2946 | } | |
2947 | ||
a6092018 BP |
2948 | union user_action_cookie cookie = { |
2949 | .ipfix = { | |
2950 | .type = USER_ACTION_COOKIE_IPFIX, | |
2951 | .output_odp_port = output_odp_port, | |
2952 | } | |
2953 | }; | |
2954 | compose_sample_action(ctx, | |
2955 | dpif_ipfix_get_bridge_exporter_probability(ipfix), | |
7321bda3 NM |
2956 | &cookie, sizeof cookie.ipfix, tunnel_out_port, |
2957 | false); | |
9583bc14 EJ |
2958 | } |
2959 | ||
a6092018 BP |
2960 | /* Fix "sample" action according to data collected while composing ODP actions, |
2961 | * as described in compose_sflow_action(). | |
2962 | * | |
2963 | * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */ | |
9583bc14 | 2964 | static void |
a6092018 | 2965 | fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset) |
9583bc14 EJ |
2966 | { |
2967 | const struct flow *base = &ctx->base_flow; | |
2968 | union user_action_cookie *cookie; | |
2969 | ||
a6092018 | 2970 | cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset, |
9583bc14 EJ |
2971 | sizeof cookie->sflow); |
2972 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2973 | ||
a6092018 | 2974 | cookie->type = USER_ACTION_COOKIE_SFLOW; |
f0fb825a | 2975 | cookie->sflow.vlan_tci = base->vlans[0].tci; |
a6092018 BP |
2976 | |
2977 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2978 | * port information") for the interpretation of cookie->output. */ | |
2979 | switch (ctx->sflow_n_outputs) { | |
2980 | case 0: | |
2981 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2982 | cookie->sflow.output = 0x40000000 | 256; | |
2983 | break; | |
2984 | ||
2985 | case 1: | |
2986 | cookie->sflow.output = dpif_sflow_odp_port_to_ifindex( | |
2987 | ctx->xbridge->sflow, ctx->sflow_odp_port); | |
2988 | if (cookie->sflow.output) { | |
2989 | break; | |
2990 | } | |
2991 | /* Fall through. */ | |
2992 | default: | |
2993 | /* 0x80000000 means "multiple output ports. */ | |
2994 | cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs; | |
2995 | break; | |
2996 | } | |
9583bc14 EJ |
2997 | } |
2998 | ||
515793d5 BP |
2999 | static bool |
3000 | process_special(struct xlate_ctx *ctx, const struct xport *xport) | |
db7d4e46 | 3001 | { |
515793d5 | 3002 | const struct flow *flow = &ctx->xin->flow; |
49a73e0c | 3003 | struct flow_wildcards *wc = ctx->wc; |
46c88433 | 3004 | const struct xbridge *xbridge = ctx->xbridge; |
515793d5 BP |
3005 | const struct dp_packet *packet = ctx->xin->packet; |
3006 | enum slow_path_reason slow; | |
642dc74d | 3007 | |
46c88433 | 3008 | if (!xport) { |
515793d5 | 3009 | slow = 0; |
46c88433 | 3010 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 3011 | if (packet) { |
46c88433 | 3012 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 | 3013 | } |
515793d5 | 3014 | slow = SLOW_CFM; |
fab52e16 | 3015 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 3016 | if (packet) { |
46c88433 | 3017 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
3018 | /* If POLL received, immediately sends FINAL back. */ |
3019 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 3020 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 3021 | } |
db7d4e46 | 3022 | } |
515793d5 | 3023 | slow = SLOW_BFD; |
46c88433 | 3024 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
3025 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
3026 | if (packet) { | |
46c88433 | 3027 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 | 3028 | } |
515793d5 | 3029 | slow = SLOW_LACP; |
9efd308e DV |
3030 | } else if ((xbridge->stp || xbridge->rstp) && |
3031 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 3032 | if (packet) { |
f025bcb7 JR |
3033 | xbridge->stp |
3034 | ? stp_process_packet(xport, packet) | |
3035 | : rstp_process_packet(xport, packet); | |
db7d4e46 | 3036 | } |
515793d5 | 3037 | slow = SLOW_STP; |
19aef6ef | 3038 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
3039 | if (packet) { |
3040 | lldp_process_packet(xport->lldp, packet); | |
3041 | } | |
515793d5 | 3042 | slow = SLOW_LLDP; |
db7d4e46 | 3043 | } else { |
515793d5 BP |
3044 | slow = 0; |
3045 | } | |
3046 | ||
3047 | if (slow) { | |
3048 | ctx->xout->slow |= slow; | |
3049 | return true; | |
3050 | } else { | |
3051 | return false; | |
db7d4e46 JP |
3052 | } |
3053 | } | |
3054 | ||
a36de779 PS |
3055 | static int |
3056 | tnl_route_lookup_flow(const struct flow *oflow, | |
a8704b50 PS |
3057 | struct in6_addr *ip, struct in6_addr *src, |
3058 | struct xport **out_port) | |
a36de779 PS |
3059 | { |
3060 | char out_dev[IFNAMSIZ]; | |
3061 | struct xbridge *xbridge; | |
3062 | struct xlate_cfg *xcfg; | |
c2b878e0 TLSC |
3063 | struct in6_addr gw; |
3064 | struct in6_addr dst; | |
a36de779 | 3065 | |
c2b878e0 | 3066 | dst = flow_tnl_dst(&oflow->tunnel); |
ed52ca57 | 3067 | if (!ovs_router_lookup(oflow->pkt_mark, &dst, out_dev, src, &gw)) { |
a36de779 PS |
3068 | return -ENOENT; |
3069 | } | |
3070 | ||
c2b878e0 TLSC |
3071 | if (ipv6_addr_is_set(&gw) && |
3072 | (!IN6_IS_ADDR_V4MAPPED(&gw) || in6_addr_get_mapped_ipv4(&gw))) { | |
a36de779 PS |
3073 | *ip = gw; |
3074 | } else { | |
c2b878e0 | 3075 | *ip = dst; |
a36de779 PS |
3076 | } |
3077 | ||
3078 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
3079 | ovs_assert(xcfg); | |
3080 | ||
3081 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
3082 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
3083 | struct xport *port; | |
3084 | ||
3085 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
3086 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
3087 | *out_port = port; | |
3088 | return 0; | |
3089 | } | |
3090 | } | |
3091 | } | |
3092 | } | |
3093 | return -ENOENT; | |
3094 | } | |
3095 | ||
3096 | static int | |
cdd42eda JG |
3097 | compose_table_xlate(struct xlate_ctx *ctx, const struct xport *out_dev, |
3098 | struct dp_packet *packet) | |
a36de779 | 3099 | { |
cdd42eda | 3100 | struct xbridge *xbridge = out_dev->xbridge; |
a36de779 PS |
3101 | struct ofpact_output output; |
3102 | struct flow flow; | |
3103 | ||
3104 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
cf62fa4c | 3105 | flow_extract(packet, &flow); |
cdd42eda JG |
3106 | flow.in_port.ofp_port = out_dev->ofp_port; |
3107 | output.port = OFPP_TABLE; | |
a36de779 PS |
3108 | output.max_len = 0; |
3109 | ||
1f4a8933 JR |
3110 | return ofproto_dpif_execute_actions__(xbridge->ofproto, |
3111 | ctx->xin->tables_version, &flow, | |
3112 | NULL, &output.ofpact, sizeof output, | |
2d9b49dd | 3113 | ctx->depth, ctx->resubmits, packet); |
a36de779 PS |
3114 | } |
3115 | ||
c2b878e0 TLSC |
3116 | static void |
3117 | tnl_send_nd_request(struct xlate_ctx *ctx, const struct xport *out_dev, | |
3118 | const struct eth_addr eth_src, | |
3119 | struct in6_addr * ipv6_src, struct in6_addr * ipv6_dst) | |
3120 | { | |
3121 | struct dp_packet packet; | |
3122 | ||
3123 | dp_packet_init(&packet, 0); | |
16187903 | 3124 | compose_nd_ns(&packet, eth_src, ipv6_src, ipv6_dst); |
c2b878e0 TLSC |
3125 | compose_table_xlate(ctx, out_dev, &packet); |
3126 | dp_packet_uninit(&packet); | |
3127 | } | |
3128 | ||
a36de779 | 3129 | static void |
cdd42eda | 3130 | tnl_send_arp_request(struct xlate_ctx *ctx, const struct xport *out_dev, |
74ff3298 | 3131 | const struct eth_addr eth_src, |
a36de779 PS |
3132 | ovs_be32 ip_src, ovs_be32 ip_dst) |
3133 | { | |
cf62fa4c | 3134 | struct dp_packet packet; |
a36de779 | 3135 | |
cf62fa4c | 3136 | dp_packet_init(&packet, 0); |
eb0b295e BP |
3137 | compose_arp(&packet, ARP_OP_REQUEST, |
3138 | eth_src, eth_addr_zero, true, ip_src, ip_dst); | |
a36de779 | 3139 | |
cdd42eda | 3140 | compose_table_xlate(ctx, out_dev, &packet); |
cf62fa4c | 3141 | dp_packet_uninit(&packet); |
a36de779 PS |
3142 | } |
3143 | ||
3144 | static int | |
81de18ec | 3145 | build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport, |
a36de779 PS |
3146 | const struct flow *flow, odp_port_t tunnel_odp_port) |
3147 | { | |
4975aa3e | 3148 | struct netdev_tnl_build_header_params tnl_params; |
a36de779 PS |
3149 | struct ovs_action_push_tnl tnl_push_data; |
3150 | struct xport *out_dev = NULL; | |
c2b878e0 TLSC |
3151 | ovs_be32 s_ip = 0, d_ip = 0; |
3152 | struct in6_addr s_ip6 = in6addr_any; | |
3153 | struct in6_addr d_ip6 = in6addr_any; | |
74ff3298 JR |
3154 | struct eth_addr smac; |
3155 | struct eth_addr dmac; | |
a36de779 | 3156 | int err; |
c2b878e0 TLSC |
3157 | char buf_sip6[INET6_ADDRSTRLEN]; |
3158 | char buf_dip6[INET6_ADDRSTRLEN]; | |
a36de779 | 3159 | |
a8704b50 | 3160 | err = tnl_route_lookup_flow(flow, &d_ip6, &s_ip6, &out_dev); |
a36de779 | 3161 | if (err) { |
2d9b49dd | 3162 | xlate_report(ctx, OFT_WARN, "native tunnel routing failed"); |
a36de779 PS |
3163 | return err; |
3164 | } | |
c2b878e0 | 3165 | |
2d9b49dd | 3166 | xlate_report(ctx, OFT_DETAIL, "tunneling to %s via %s", |
c2b878e0 TLSC |
3167 | ipv6_string_mapped(buf_dip6, &d_ip6), |
3168 | netdev_get_name(out_dev->netdev)); | |
a36de779 PS |
3169 | |
3170 | /* Use mac addr of bridge port of the peer. */ | |
74ff3298 | 3171 | err = netdev_get_etheraddr(out_dev->netdev, &smac); |
a36de779 | 3172 | if (err) { |
2d9b49dd BP |
3173 | xlate_report(ctx, OFT_WARN, |
3174 | "tunnel output device lacks Ethernet address"); | |
a36de779 PS |
3175 | return err; |
3176 | } | |
3177 | ||
c2b878e0 TLSC |
3178 | d_ip = in6_addr_get_mapped_ipv4(&d_ip6); |
3179 | if (d_ip) { | |
a8704b50 | 3180 | s_ip = in6_addr_get_mapped_ipv4(&s_ip6); |
a36de779 PS |
3181 | } |
3182 | ||
c2b878e0 | 3183 | err = tnl_neigh_lookup(out_dev->xbridge->name, &d_ip6, &dmac); |
a36de779 | 3184 | if (err) { |
2d9b49dd BP |
3185 | xlate_report(ctx, OFT_DETAIL, |
3186 | "neighbor cache miss for %s on bridge %s, " | |
c2b878e0 TLSC |
3187 | "sending %s request", |
3188 | buf_dip6, out_dev->xbridge->name, d_ip ? "ARP" : "ND"); | |
3189 | if (d_ip) { | |
3190 | tnl_send_arp_request(ctx, out_dev, smac, s_ip, d_ip); | |
3191 | } else { | |
3192 | tnl_send_nd_request(ctx, out_dev, smac, &s_ip6, &d_ip6); | |
3193 | } | |
a36de779 PS |
3194 | return err; |
3195 | } | |
c2b878e0 | 3196 | |
a36de779 PS |
3197 | if (ctx->xin->xcache) { |
3198 | struct xc_entry *entry; | |
3199 | ||
53902038 | 3200 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_NEIGH); |
901a517e JR |
3201 | ovs_strlcpy(entry->tnl_neigh_cache.br_name, out_dev->xbridge->name, |
3202 | sizeof entry->tnl_neigh_cache.br_name); | |
3203 | entry->tnl_neigh_cache.d_ipv6 = d_ip6; | |
a36de779 | 3204 | } |
81de18ec | 3205 | |
2d9b49dd | 3206 | xlate_report(ctx, OFT_DETAIL, "tunneling from "ETH_ADDR_FMT" %s" |
c2b878e0 TLSC |
3207 | " to "ETH_ADDR_FMT" %s", |
3208 | ETH_ADDR_ARGS(smac), ipv6_string_mapped(buf_sip6, &s_ip6), | |
3209 | ETH_ADDR_ARGS(dmac), buf_dip6); | |
3210 | ||
4975aa3e PS |
3211 | netdev_init_tnl_build_header_params(&tnl_params, flow, &s_ip6, dmac, smac); |
3212 | err = tnl_port_build_header(xport->ofport, &tnl_push_data, &tnl_params); | |
a36de779 PS |
3213 | if (err) { |
3214 | return err; | |
3215 | } | |
3216 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
3217 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
f1dac512 SC |
3218 | |
3219 | size_t push_action_size = 0; | |
3220 | size_t clone_ofs = nl_msg_start_nested(ctx->odp_actions, | |
3221 | OVS_ACTION_ATTR_CLONE); | |
1520ef4f | 3222 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); |
f1dac512 SC |
3223 | push_action_size = ctx->odp_actions->size; |
3224 | apply_nested_clone_actions(ctx, xport, out_dev); | |
3225 | if (ctx->odp_actions->size > push_action_size) { | |
3226 | /* Update the CLONE action only when combined */ | |
3227 | nl_msg_end_nested(ctx->odp_actions, clone_ofs); | |
3228 | } | |
a36de779 PS |
3229 | return 0; |
3230 | } | |
3231 | ||
704bb0bf JS |
3232 | static void |
3233 | xlate_commit_actions(struct xlate_ctx *ctx) | |
3234 | { | |
3235 | bool use_masked = ctx->xbridge->support.masked_set_action; | |
3236 | ||
3237 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
3238 | ctx->odp_actions, ctx->wc, | |
3239 | use_masked); | |
3240 | } | |
3241 | ||
07659514 | 3242 | static void |
72fe7578 | 3243 | clear_conntrack(struct xlate_ctx *ctx) |
07659514 | 3244 | { |
72fe7578 | 3245 | ctx->conntracked = false; |
6846e91e | 3246 | flow_clear_conntrack(&ctx->xin->flow); |
07659514 JS |
3247 | } |
3248 | ||
58d636ee BK |
3249 | static bool |
3250 | xlate_flow_is_protected(const struct xlate_ctx *ctx, const struct flow *flow, const struct xport *xport_out) | |
3251 | { | |
3252 | const struct xport *xport_in; | |
3253 | ||
3254 | if (!xport_out) { | |
3255 | return false; | |
3256 | } | |
3257 | ||
3258 | xport_in = get_ofp_port(ctx->xbridge, flow->in_port.ofp_port); | |
3259 | ||
3260 | return (xport_in && xport_in->xbundle && xport_out->xbundle && | |
3261 | xport_in->xbundle->protected && xport_out->xbundle->protected); | |
3262 | } | |
3263 | ||
f1dac512 SC |
3264 | /* Populate and apply nested actions on 'out_dev'. |
3265 | * The nested actions are applied on cloned packets in dp while outputting to | |
3266 | * either patch or tunnel ports. | |
3267 | * On output to a patch port, the output action will be replaced with set of | |
3268 | * nested actions on the peer patch port. | |
3269 | * Similarly on output to a tunnel port, the post nested actions on | |
3270 | * tunnel are chained up with the tunnel-push action. | |
3271 | */ | |
3272 | static void | |
3273 | apply_nested_clone_actions(struct xlate_ctx *ctx, const struct xport *in_dev, | |
3274 | struct xport *out_dev) | |
3275 | { | |
3276 | struct flow *flow = &ctx->xin->flow; | |
3277 | struct flow old_flow = ctx->xin->flow; | |
3278 | struct flow_tnl old_flow_tnl_wc = ctx->wc->masks.tunnel; | |
3279 | bool old_conntrack = ctx->conntracked; | |
3280 | bool old_was_mpls = ctx->was_mpls; | |
3281 | ovs_version_t old_version = ctx->xin->tables_version; | |
3282 | struct ofpbuf old_stack = ctx->stack; | |
3283 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
3284 | struct ofpbuf old_action_set = ctx->action_set; | |
3285 | struct ovs_list *old_trace = ctx->xin->trace; | |
3286 | uint64_t actset_stub[1024 / 8]; | |
3287 | ||
3288 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); | |
3289 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); | |
3290 | flow->in_port.ofp_port = out_dev->ofp_port; | |
3291 | flow->metadata = htonll(0); | |
3292 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
3293 | memset(&ctx->wc->masks.tunnel, 0, sizeof ctx->wc->masks.tunnel); | |
3294 | flow->tunnel.metadata.tab = | |
3295 | ofproto_get_tun_tab(&out_dev->xbridge->ofproto->up); | |
3296 | ctx->wc->masks.tunnel.metadata.tab = flow->tunnel.metadata.tab; | |
3297 | memset(flow->regs, 0, sizeof flow->regs); | |
3298 | flow->actset_output = OFPP_UNSET; | |
3299 | ctx->conntracked = false; | |
3300 | clear_conntrack(ctx); | |
3301 | ctx->xin->trace = xlate_report(ctx, OFT_BRIDGE, | |
3302 | "bridge(\"%s\")", | |
3303 | out_dev->xbridge->name); | |
3304 | mirror_mask_t old_mirrors = ctx->mirrors; | |
3305 | bool independent_mirrors = out_dev->xbridge != ctx->xbridge; | |
3306 | if (independent_mirrors) { | |
3307 | ctx->mirrors = 0; | |
3308 | } | |
3309 | ctx->xbridge = out_dev->xbridge; | |
3310 | ||
3311 | /* The bridge is now known so obtain its table version. */ | |
3312 | ctx->xin->tables_version | |
3313 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); | |
3314 | ||
3315 | if (!process_special(ctx, out_dev) && may_receive(out_dev, ctx)) { | |
3316 | if (xport_stp_forward_state(out_dev) && | |
3317 | xport_rstp_forward_state(out_dev)) { | |
3318 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true, | |
3319 | false); | |
3320 | if (!ctx->freezing) { | |
3321 | xlate_action_set(ctx); | |
3322 | } | |
3323 | if (ctx->freezing) { | |
3324 | finish_freezing(ctx); | |
3325 | } | |
3326 | } else { | |
3327 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and | |
3328 | * the learning action look at the packet, then drop it. */ | |
3329 | struct flow old_base_flow = ctx->base_flow; | |
3330 | size_t old_size = ctx->odp_actions->size; | |
3331 | mirror_mask_t old_mirrors2 = ctx->mirrors; | |
3332 | ||
3333 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true, | |
3334 | false); | |
3335 | ctx->mirrors = old_mirrors2; | |
3336 | ctx->base_flow = old_base_flow; | |
3337 | ctx->odp_actions->size = old_size; | |
3338 | ||
3339 | /* Undo changes that may have been done for freezing. */ | |
3340 | ctx_cancel_freeze(ctx); | |
3341 | } | |
3342 | } | |
3343 | ||
3344 | ctx->xin->trace = old_trace; | |
3345 | if (independent_mirrors) { | |
3346 | ctx->mirrors = old_mirrors; | |
3347 | } | |
3348 | ctx->xin->flow = old_flow; | |
3349 | ctx->xbridge = in_dev->xbridge; | |
3350 | ofpbuf_uninit(&ctx->action_set); | |
3351 | ctx->action_set = old_action_set; | |
3352 | ofpbuf_uninit(&ctx->stack); | |
3353 | ctx->stack = old_stack; | |
3354 | ||
3355 | /* Restore calling bridge's lookup version. */ | |
3356 | ctx->xin->tables_version = old_version; | |
3357 | ||
3358 | /* Restore to calling bridge tunneling information */ | |
3359 | ctx->wc->masks.tunnel = old_flow_tnl_wc; | |
3360 | ||
3361 | /* The out bridge popping MPLS should have no effect on the original | |
3362 | * bridge. */ | |
3363 | ctx->was_mpls = old_was_mpls; | |
3364 | ||
3365 | /* The out bridge's conntrack execution should have no effect on the | |
3366 | * original bridge. */ | |
3367 | ctx->conntracked = old_conntrack; | |
3368 | ||
3369 | /* The fact that the out bridge exits (for any reason) does not mean | |
3370 | * that the original bridge should exit. Specifically, if the out | |
3371 | * bridge freezes translation, the original bridge must continue | |
3372 | * processing with the original, not the frozen packet! */ | |
3373 | ctx->exit = false; | |
3374 | ||
3375 | /* Out bridge errors do not propagate back. */ | |
3376 | ctx->error = XLATE_OK; | |
3377 | ||
3378 | if (ctx->xin->resubmit_stats) { | |
3379 | netdev_vport_inc_tx(in_dev->netdev, ctx->xin->resubmit_stats); | |
3380 | netdev_vport_inc_rx(out_dev->netdev, ctx->xin->resubmit_stats); | |
3381 | if (out_dev->bfd) { | |
3382 | bfd_account_rx(out_dev->bfd, ctx->xin->resubmit_stats); | |
3383 | } | |
3384 | } | |
3385 | if (ctx->xin->xcache) { | |
3386 | struct xc_entry *entry; | |
3387 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
3388 | entry->dev.tx = netdev_ref(in_dev->netdev); | |
3389 | entry->dev.rx = netdev_ref(out_dev->netdev); | |
3390 | entry->dev.bfd = bfd_ref(out_dev->bfd); | |
3391 | } | |
3392 | } | |
3393 | ||
9583bc14 | 3394 | static void |
4e022ec0 | 3395 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
e93ef1c7 | 3396 | const struct xlate_bond_recirc *xr, bool check_stp) |
9583bc14 | 3397 | { |
46c88433 | 3398 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
49a73e0c | 3399 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 3400 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 3401 | struct flow_tnl flow_tnl; |
f0fb825a | 3402 | union flow_vlan_hdr flow_vlans[FLOW_MAX_VLAN_HEADERS]; |
9583bc14 | 3403 | uint8_t flow_nw_tos; |
4e022ec0 | 3404 | odp_port_t out_port, odp_port; |
a36de779 | 3405 | bool tnl_push_pop_send = false; |
ca077186 | 3406 | uint8_t dscp; |
9583bc14 EJ |
3407 | |
3408 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
3409 | * before traversing a patch port. */ | |
2482b0b0 | 3410 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 39); |
a36de779 | 3411 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 3412 | |
46c88433 | 3413 | if (!xport) { |
2d9b49dd | 3414 | xlate_report(ctx, OFT_WARN, "Nonexistent output port"); |
9583bc14 | 3415 | return; |
46c88433 | 3416 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
2d9b49dd | 3417 | xlate_report(ctx, OFT_DETAIL, "OFPPC_NO_FWD set, skipping output"); |
9583bc14 | 3418 | return; |
1356dbd1 | 3419 | } else if (ctx->mirror_snaplen != 0 && xport->odp_port == ODPP_NONE) { |
2d9b49dd BP |
3420 | xlate_report(ctx, OFT_WARN, |
3421 | "Mirror truncate to ODPP_NONE, skipping output"); | |
1356dbd1 | 3422 | return; |
58d636ee | 3423 | } else if (xlate_flow_is_protected(ctx, flow, xport)) { |
2d9b49dd BP |
3424 | xlate_report(ctx, OFT_WARN, |
3425 | "Flow is between protected ports, skipping output."); | |
58d636ee | 3426 | return; |
0d1cee12 | 3427 | } else if (check_stp) { |
bbbca389 | 3428 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
3429 | if (!xport_stp_should_forward_bpdu(xport) && |
3430 | !xport_rstp_should_manage_bpdu(xport)) { | |
3431 | if (ctx->xbridge->stp != NULL) { | |
2d9b49dd BP |
3432 | xlate_report(ctx, OFT_WARN, |
3433 | "STP not in listening state, " | |
3434 | "skipping bpdu output"); | |
9efd308e | 3435 | } else if (ctx->xbridge->rstp != NULL) { |
2d9b49dd BP |
3436 | xlate_report(ctx, OFT_WARN, |
3437 | "RSTP not managing BPDU in this state, " | |
3438 | "skipping bpdu output"); | |
9efd308e | 3439 | } |
0d1cee12 K |
3440 | return; |
3441 | } | |
67818616 MV |
3442 | } else if ((xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) |
3443 | || (xport->bfd && bfd_should_process_flow(xport->bfd, flow, | |
3444 | wc))) { | |
3445 | /* Pass; STP should not block link health detection. */ | |
9efd308e DV |
3446 | } else if (!xport_stp_forward_state(xport) || |
3447 | !xport_rstp_forward_state(xport)) { | |
3448 | if (ctx->xbridge->stp != NULL) { | |
2d9b49dd BP |
3449 | xlate_report(ctx, OFT_WARN, |
3450 | "STP not in forwarding state, skipping output"); | |
9efd308e | 3451 | } else if (ctx->xbridge->rstp != NULL) { |
2d9b49dd BP |
3452 | xlate_report(ctx, OFT_WARN, |
3453 | "RSTP not in forwarding state, skipping output"); | |
9efd308e | 3454 | } |
0d1cee12 K |
3455 | return; |
3456 | } | |
9583bc14 EJ |
3457 | } |
3458 | ||
46c88433 | 3459 | if (xport->peer) { |
f1dac512 SC |
3460 | apply_nested_clone_actions(ctx, xport, xport->peer); |
3461 | return; | |
9583bc14 EJ |
3462 | } |
3463 | ||
f0fb825a | 3464 | memcpy(flow_vlans, flow->vlans, sizeof flow_vlans); |
33bf9176 | 3465 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 3466 | |
16194afd DDP |
3467 | if (count_skb_priorities(xport)) { |
3468 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
3469 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
3470 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
3471 | flow->nw_tos &= ~IP_DSCP_MASK; | |
3472 | flow->nw_tos |= dscp; | |
3473 | } | |
9583bc14 EJ |
3474 | } |
3475 | ||
46c88433 | 3476 | if (xport->is_tunnel) { |
c2b878e0 | 3477 | struct in6_addr dst; |
9583bc14 EJ |
3478 | /* Save tunnel metadata so that changes made due to |
3479 | * the Logical (tunnel) Port are not visible for any further | |
3480 | * matches, while explicit set actions on tunnel metadata are. | |
3481 | */ | |
a36de779 | 3482 | flow_tnl = flow->tunnel; |
49a73e0c | 3483 | odp_port = tnl_port_send(xport->ofport, flow, ctx->wc); |
4e022ec0 | 3484 | if (odp_port == ODPP_NONE) { |
2d9b49dd | 3485 | xlate_report(ctx, OFT_WARN, "Tunneling decided against output"); |
9583bc14 EJ |
3486 | goto out; /* restore flow_nw_tos */ |
3487 | } | |
c2b878e0 TLSC |
3488 | dst = flow_tnl_dst(&flow->tunnel); |
3489 | if (ipv6_addr_equals(&dst, &ctx->orig_tunnel_ipv6_dst)) { | |
2d9b49dd | 3490 | xlate_report(ctx, OFT_WARN, "Not tunneling to our own address"); |
9583bc14 EJ |
3491 | goto out; /* restore flow_nw_tos */ |
3492 | } | |
3493 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 3494 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 3495 | } |
b256dc52 JS |
3496 | if (ctx->xin->xcache) { |
3497 | struct xc_entry *entry; | |
3498 | ||
3499 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
901a517e | 3500 | entry->dev.tx = netdev_ref(xport->netdev); |
b256dc52 | 3501 | } |
9583bc14 | 3502 | out_port = odp_port; |
a36de779 | 3503 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
2d9b49dd | 3504 | xlate_report(ctx, OFT_DETAIL, "output to native tunnel"); |
a36de779 PS |
3505 | tnl_push_pop_send = true; |
3506 | } else { | |
2d9b49dd | 3507 | xlate_report(ctx, OFT_DETAIL, "output to kernel tunnel"); |
1520ef4f | 3508 | commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions); |
a36de779 PS |
3509 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
3510 | } | |
9583bc14 | 3511 | } else { |
46c88433 | 3512 | odp_port = xport->odp_port; |
7614e5d0 | 3513 | out_port = odp_port; |
9583bc14 | 3514 | } |
9583bc14 | 3515 | |
4e022ec0 | 3516 | if (out_port != ODPP_NONE) { |
704bb0bf | 3517 | xlate_commit_actions(ctx); |
adcf00ba | 3518 | |
e93ef1c7 | 3519 | if (xr) { |
347bf289 | 3520 | struct ovs_action_hash *act_hash; |
adcf00ba | 3521 | |
347bf289 | 3522 | /* Hash action. */ |
1520ef4f | 3523 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, |
347bf289 AZ |
3524 | OVS_ACTION_ATTR_HASH, |
3525 | sizeof *act_hash); | |
3526 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 3527 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
3528 | |
3529 | /* Recirc action. */ | |
1520ef4f | 3530 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 3531 | xr->recirc_id); |
adcf00ba | 3532 | } else { |
a36de779 PS |
3533 | |
3534 | if (tnl_push_pop_send) { | |
3535 | build_tunnel_send(ctx, xport, flow, odp_port); | |
3536 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
3537 | } else { | |
3538 | odp_port_t odp_tnl_port = ODPP_NONE; | |
3539 | ||
3540 | /* XXX: Write better Filter for tunnel port. We can use inport | |
3541 | * int tunnel-port flow to avoid these checks completely. */ | |
3542 | if (ofp_port == OFPP_LOCAL && | |
3543 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
3544 | ||
3545 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
3546 | } | |
3547 | ||
3548 | if (odp_tnl_port != ODPP_NONE) { | |
1520ef4f | 3549 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3550 | OVS_ACTION_ATTR_TUNNEL_POP, |
3551 | odp_tnl_port); | |
3552 | } else { | |
3553 | /* Tunnel push-pop action is not compatible with | |
3554 | * IPFIX action. */ | |
a6092018 | 3555 | compose_ipfix_action(ctx, out_port); |
1356dbd1 WT |
3556 | |
3557 | /* Handle truncation of the mirrored packet. */ | |
3558 | if (ctx->mirror_snaplen > 0 && | |
3559 | ctx->mirror_snaplen < UINT16_MAX) { | |
3560 | struct ovs_action_trunc *trunc; | |
3561 | ||
3562 | trunc = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
3563 | OVS_ACTION_ATTR_TRUNC, | |
3564 | sizeof *trunc); | |
3565 | trunc->max_len = ctx->mirror_snaplen; | |
3566 | if (!ctx->xbridge->support.trunc) { | |
3567 | ctx->xout->slow |= SLOW_ACTION; | |
3568 | } | |
3569 | } | |
3570 | ||
1520ef4f | 3571 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3572 | OVS_ACTION_ATTR_OUTPUT, |
3573 | out_port); | |
1356dbd1 WT |
3574 | } |
3575 | } | |
adcf00ba | 3576 | } |
9583bc14 | 3577 | |
6cbbf4fa EJ |
3578 | ctx->sflow_odp_port = odp_port; |
3579 | ctx->sflow_n_outputs++; | |
2031ef97 | 3580 | ctx->nf_output_iface = ofp_port; |
6cbbf4fa EJ |
3581 | } |
3582 | ||
7efbc3b7 BP |
3583 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
3584 | mirror_packet(ctx, xport->xbundle, | |
3585 | xbundle_mirror_dst(xport->xbundle->xbridge, | |
3586 | xport->xbundle)); | |
3587 | } | |
3588 | ||
6cbbf4fa | 3589 | out: |
9583bc14 | 3590 | /* Restore flow */ |
f0fb825a | 3591 | memcpy(flow->vlans, flow_vlans, sizeof flow->vlans); |
33bf9176 | 3592 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
3593 | } |
3594 | ||
3595 | static void | |
e93ef1c7 JR |
3596 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3597 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3598 | { |
e93ef1c7 | 3599 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3600 | } |
3601 | ||
bb61b33d | 3602 | static void |
790c5d26 | 3603 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule, bool deepens) |
bb61b33d BP |
3604 | { |
3605 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3606 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3607 | const struct rule_actions *actions; |
bb61b33d BP |
3608 | |
3609 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3610 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3611 | } |
3612 | ||
98b07853 | 3613 | ctx->resubmits++; |
790c5d26 | 3614 | |
790c5d26 | 3615 | ctx->depth += deepens; |
bb61b33d | 3616 | ctx->rule = rule; |
07a3cd5c BP |
3617 | ctx->rule_cookie = rule->up.flow_cookie; |
3618 | actions = rule_get_actions(&rule->up); | |
6f00e29b | 3619 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); |
8b1e5560 | 3620 | ctx->rule_cookie = old_cookie; |
bb61b33d | 3621 | ctx->rule = old_rule; |
790c5d26 | 3622 | ctx->depth -= deepens; |
bb61b33d BP |
3623 | } |
3624 | ||
bd3240ba SH |
3625 | static bool |
3626 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3627 | { |
790c5d26 | 3628 | if (ctx->depth >= MAX_DEPTH) { |
2d9b49dd | 3629 | xlate_report_error(ctx, "over max translation depth %d", MAX_DEPTH); |
fff1b9c0 | 3630 | ctx->error = XLATE_RECURSION_TOO_DEEP; |
790c5d26 | 3631 | } else if (ctx->resubmits >= MAX_RESUBMITS) { |
2d9b49dd | 3632 | xlate_report_error(ctx, "over %d resubmit actions", MAX_RESUBMITS); |
fff1b9c0 | 3633 | ctx->error = XLATE_TOO_MANY_RESUBMITS; |
1520ef4f | 3634 | } else if (ctx->odp_actions->size > UINT16_MAX) { |
2d9b49dd | 3635 | xlate_report_error(ctx, "resubmits yielded over 64 kB of actions"); |
fff1b9c0 JR |
3636 | /* NOT an error, as we'll be slow-pathing the flow in this case? */ |
3637 | ctx->exit = true; /* XXX: translation still terminated! */ | |
6fd6ed71 | 3638 | } else if (ctx->stack.size >= 65536) { |
2d9b49dd | 3639 | xlate_report_error(ctx, "resubmits yielded over 64 kB of stack"); |
fff1b9c0 | 3640 | ctx->error = XLATE_STACK_TOO_DEEP; |
98b07853 | 3641 | } else { |
bd3240ba SH |
3642 | return true; |
3643 | } | |
3644 | ||
3645 | return false; | |
3646 | } | |
3647 | ||
2cd20955 JR |
3648 | static void |
3649 | tuple_swap_flow(struct flow *flow, bool ipv4) | |
3650 | { | |
3651 | uint8_t nw_proto = flow->nw_proto; | |
3652 | flow->nw_proto = flow->ct_nw_proto; | |
3653 | flow->ct_nw_proto = nw_proto; | |
3654 | ||
3655 | if (ipv4) { | |
3656 | ovs_be32 nw_src = flow->nw_src; | |
3657 | flow->nw_src = flow->ct_nw_src; | |
3658 | flow->ct_nw_src = nw_src; | |
3659 | ||
3660 | ovs_be32 nw_dst = flow->nw_dst; | |
3661 | flow->nw_dst = flow->ct_nw_dst; | |
3662 | flow->ct_nw_dst = nw_dst; | |
3663 | } else { | |
3664 | struct in6_addr ipv6_src = flow->ipv6_src; | |
3665 | flow->ipv6_src = flow->ct_ipv6_src; | |
3666 | flow->ct_ipv6_src = ipv6_src; | |
3667 | ||
3668 | struct in6_addr ipv6_dst = flow->ipv6_dst; | |
3669 | flow->ipv6_dst = flow->ct_ipv6_dst; | |
3670 | flow->ct_ipv6_dst = ipv6_dst; | |
3671 | } | |
3672 | ||
3673 | ovs_be16 tp_src = flow->tp_src; | |
3674 | flow->tp_src = flow->ct_tp_src; | |
3675 | flow->ct_tp_src = tp_src; | |
3676 | ||
3677 | ovs_be16 tp_dst = flow->tp_dst; | |
3678 | flow->tp_dst = flow->ct_tp_dst; | |
3679 | flow->ct_tp_dst = tp_dst; | |
3680 | } | |
3681 | ||
3682 | static void | |
3683 | tuple_swap(struct flow *flow, struct flow_wildcards *wc) | |
3684 | { | |
3685 | bool ipv4 = (flow->dl_type == htons(ETH_TYPE_IP)); | |
3686 | ||
3687 | tuple_swap_flow(flow, ipv4); | |
3688 | tuple_swap_flow(&wc->masks, ipv4); | |
3689 | } | |
3690 | ||
bd3240ba | 3691 | static void |
6d328fa2 | 3692 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2cd20955 JR |
3693 | bool may_packet_in, bool honor_table_miss, |
3694 | bool with_ct_orig) | |
bd3240ba | 3695 | { |
e12ec36b SH |
3696 | /* Check if we need to recirculate before matching in a table. */ |
3697 | if (ctx->was_mpls) { | |
3698 | ctx_trigger_freeze(ctx); | |
3699 | return; | |
3700 | } | |
bd3240ba | 3701 | if (xlate_resubmit_resource_check(ctx)) { |
9583bc14 | 3702 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3703 | struct rule_dpif *rule; |
9583bc14 EJ |
3704 | |
3705 | ctx->table_id = table_id; | |
3706 | ||
2cd20955 JR |
3707 | /* Swap packet fields with CT 5-tuple if requested. */ |
3708 | if (with_ct_orig) { | |
3709 | /* Do not swap if there is no CT tuple, or if key is not IP. */ | |
3710 | if (ctx->xin->flow.ct_nw_proto == 0 || | |
3711 | !is_ip_any(&ctx->xin->flow)) { | |
3712 | xlate_report_error(ctx, | |
3713 | "resubmit(ct) with non-tracked or non-IP packet!"); | |
3714 | return; | |
3715 | } | |
3716 | tuple_swap(&ctx->xin->flow, ctx->wc); | |
3717 | } | |
34dd0d78 | 3718 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
1f4a8933 | 3719 | ctx->xin->tables_version, |
c0e638aa | 3720 | &ctx->xin->flow, ctx->wc, |
34dd0d78 JR |
3721 | ctx->xin->resubmit_stats, |
3722 | &ctx->table_id, in_port, | |
a027899e JR |
3723 | may_packet_in, honor_table_miss, |
3724 | ctx->xin->xcache); | |
2cd20955 JR |
3725 | /* Swap back. */ |
3726 | if (with_ct_orig) { | |
3727 | tuple_swap(&ctx->xin->flow, ctx->wc); | |
3728 | } | |
ad3efdcb | 3729 | |
a2143702 | 3730 | if (rule) { |
83709dfa JR |
3731 | /* Fill in the cache entry here instead of xlate_recursively |
3732 | * to make the reference counting more explicit. We take a | |
3733 | * reference in the lookups above if we are going to cache the | |
3734 | * rule. */ | |
3735 | if (ctx->xin->xcache) { | |
3736 | struct xc_entry *entry; | |
3737 | ||
3738 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
901a517e | 3739 | entry->rule = rule; |
07a3cd5c | 3740 | ofproto_rule_ref(&rule->up); |
83709dfa | 3741 | } |
2d9b49dd BP |
3742 | |
3743 | struct ovs_list *old_trace = ctx->xin->trace; | |
3744 | xlate_report_table(ctx, rule, table_id); | |
790c5d26 | 3745 | xlate_recursively(ctx, rule, table_id <= old_table_id); |
2d9b49dd | 3746 | ctx->xin->trace = old_trace; |
ad3efdcb EJ |
3747 | } |
3748 | ||
9583bc14 | 3749 | ctx->table_id = old_table_id; |
98b07853 | 3750 | return; |
9583bc14 EJ |
3751 | } |
3752 | } | |
3753 | ||
76973237 | 3754 | /* Consumes the group reference, which is only taken if xcache exists. */ |
f4fb341b | 3755 | static void |
1e684d7d RW |
3756 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
3757 | struct ofputil_bucket *bucket) | |
3758 | { | |
3759 | if (ctx->xin->resubmit_stats) { | |
3760 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
3761 | } | |
3762 | if (ctx->xin->xcache) { | |
3763 | struct xc_entry *entry; | |
3764 | ||
3765 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
901a517e JR |
3766 | entry->group.group = group; |
3767 | entry->group.bucket = bucket; | |
1e684d7d RW |
3768 | } |
3769 | } | |
3770 | ||
3771 | static void | |
3772 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
3773 | { |
3774 | uint64_t action_list_stub[1024 / 8]; | |
0a2869d5 BP |
3775 | struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub); |
3776 | struct ofpbuf action_set = ofpbuf_const_initializer(bucket->ofpacts, | |
3777 | bucket->ofpacts_len); | |
5b09e569 | 3778 | struct flow old_flow = ctx->xin->flow; |
e12ec36b | 3779 | bool old_was_mpls = ctx->was_mpls; |
f4fb341b | 3780 | |
f4fb341b | 3781 | ofpacts_execute_action_set(&action_list, &action_set); |
790c5d26 | 3782 | ctx->depth++; |
6fd6ed71 | 3783 | do_xlate_actions(action_list.data, action_list.size, ctx); |
790c5d26 | 3784 | ctx->depth--; |
f4fb341b | 3785 | |
f4fb341b | 3786 | ofpbuf_uninit(&action_list); |
5b09e569 | 3787 | |
77ab5fd2 | 3788 | /* Check if need to freeze. */ |
1d361a81 | 3789 | if (ctx->freezing) { |
77ab5fd2 | 3790 | finish_freezing(ctx); |
e672ff9b JR |
3791 | } |
3792 | ||
5b09e569 JR |
3793 | /* Roll back flow to previous state. |
3794 | * This is equivalent to cloning the packet for each bucket. | |
3795 | * | |
3796 | * As a side effect any subsequently applied actions will | |
3797 | * also effectively be applied to a clone of the packet taken | |
3798 | * just before applying the all or indirect group. | |
3799 | * | |
3800 | * Note that group buckets are action sets, hence they cannot modify the | |
3801 | * main action set. Also any stack actions are ignored when executing an | |
3802 | * action set, so group buckets cannot change the stack either. | |
3803 | * However, we do allow resubmit actions in group buckets, which could | |
3804 | * break the above assumptions. It is up to the controller to not mess up | |
3805 | * with the action_set and stack in the tables resubmitted to from | |
3806 | * group buckets. */ | |
3807 | ctx->xin->flow = old_flow; | |
3808 | ||
e12ec36b SH |
3809 | /* The group bucket popping MPLS should have no effect after bucket |
3810 | * execution. */ | |
3811 | ctx->was_mpls = old_was_mpls; | |
3812 | ||
5b09e569 JR |
3813 | /* The fact that the group bucket exits (for any reason) does not mean that |
3814 | * the translation after the group action should exit. Specifically, if | |
1d361a81 BP |
3815 | * the group bucket freezes translation, the actions after the group action |
3816 | * must continue processing with the original, not the frozen packet! */ | |
5b09e569 | 3817 | ctx->exit = false; |
f4fb341b SH |
3818 | } |
3819 | ||
3820 | static void | |
3821 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3822 | { | |
1e684d7d | 3823 | struct ofputil_bucket *bucket; |
07a3cd5c | 3824 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
f4fb341b | 3825 | xlate_group_bucket(ctx, bucket); |
f4fb341b | 3826 | } |
1e684d7d | 3827 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
3828 | } |
3829 | ||
dd8cd4b4 SH |
3830 | static void |
3831 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3832 | { | |
1e684d7d | 3833 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
3834 | |
3835 | bucket = group_first_live_bucket(ctx, group, 0); | |
3836 | if (bucket) { | |
3837 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 3838 | xlate_group_stats(ctx, group, bucket); |
76973237 | 3839 | } else if (ctx->xin->xcache) { |
07a3cd5c | 3840 | ofproto_group_unref(&group->up); |
dd8cd4b4 SH |
3841 | } |
3842 | } | |
3843 | ||
fe7e5749 | 3844 | static void |
7565c3e4 | 3845 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 | 3846 | { |
49a73e0c | 3847 | struct flow_wildcards *wc = ctx->wc; |
1e684d7d | 3848 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
3849 | uint32_t basis; |
3850 | ||
1d1aae0b | 3851 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 3852 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
3853 | bucket = group_best_live_bucket(ctx, group, basis); |
3854 | if (bucket) { | |
fe7e5749 | 3855 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3856 | xlate_group_stats(ctx, group, bucket); |
76973237 | 3857 | } else if (ctx->xin->xcache) { |
07a3cd5c | 3858 | ofproto_group_unref(&group->up); |
fe7e5749 SH |
3859 | } |
3860 | } | |
3861 | ||
0c4b9393 SH |
3862 | static void |
3863 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3864 | { | |
07a3cd5c BP |
3865 | const struct field_array *fields = &group->up.props.fields; |
3866 | const uint8_t *mask_values = fields->values; | |
3867 | uint32_t basis = hash_uint64(group->up.props.selection_method_param); | |
0c4b9393 | 3868 | |
07a3cd5c | 3869 | size_t i; |
e8dba719 JR |
3870 | BITMAP_FOR_EACH_1 (i, MFF_N_IDS, fields->used.bm) { |
3871 | const struct mf_field *mf = mf_from_id(i); | |
0c4b9393 | 3872 | |
e8dba719 JR |
3873 | /* Skip fields for which prerequisities are not met. */ |
3874 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow, ctx->wc)) { | |
3875 | /* Skip the mask bytes for this field. */ | |
3876 | mask_values += mf->n_bytes; | |
3877 | continue; | |
3878 | } | |
0c4b9393 | 3879 | |
e8dba719 JR |
3880 | union mf_value value; |
3881 | union mf_value mask; | |
0c4b9393 | 3882 | |
e8dba719 JR |
3883 | mf_get_value(mf, &ctx->xin->flow, &value); |
3884 | /* Mask the value. */ | |
3885 | for (int j = 0; j < mf->n_bytes; j++) { | |
3886 | mask.b[j] = *mask_values++; | |
3887 | value.b[j] &= mask.b[j]; | |
3888 | } | |
3889 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
1cb20095 | 3890 | |
e8dba719 JR |
3891 | /* For tunnels, hash in whether the field is present. */ |
3892 | if (mf_is_tun_metadata(mf)) { | |
3893 | basis = hash_boolean(mf_is_set(mf, &ctx->xin->flow), basis); | |
0c4b9393 | 3894 | } |
e8dba719 JR |
3895 | |
3896 | mf_mask_field_masked(mf, &mask, ctx->wc); | |
0c4b9393 SH |
3897 | } |
3898 | ||
07a3cd5c | 3899 | struct ofputil_bucket *bucket = group_best_live_bucket(ctx, group, basis); |
0c4b9393 SH |
3900 | if (bucket) { |
3901 | xlate_group_bucket(ctx, bucket); | |
3902 | xlate_group_stats(ctx, group, bucket); | |
76973237 | 3903 | } else if (ctx->xin->xcache) { |
07a3cd5c | 3904 | ofproto_group_unref(&group->up); |
0c4b9393 SH |
3905 | } |
3906 | } | |
3907 | ||
53cc166a JR |
3908 | static void |
3909 | xlate_dp_hash_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3910 | { | |
3911 | struct ofputil_bucket *bucket; | |
3912 | ||
3913 | /* dp_hash value 0 is special since it means that the dp_hash has not been | |
3914 | * computed, as all computed dp_hash values are non-zero. Therefore | |
3915 | * compare to zero can be used to decide if the dp_hash value is valid | |
3916 | * without masking the dp_hash field. */ | |
3917 | if (!ctx->xin->flow.dp_hash) { | |
07a3cd5c | 3918 | uint64_t param = group->up.props.selection_method_param; |
53cc166a JR |
3919 | |
3920 | ctx_trigger_recirculate_with_hash(ctx, param >> 32, (uint32_t)param); | |
3921 | } else { | |
07a3cd5c | 3922 | uint32_t n_buckets = group->up.n_buckets; |
53cc166a JR |
3923 | if (n_buckets) { |
3924 | /* Minimal mask to cover the number of buckets. */ | |
3925 | uint32_t mask = (1 << log_2_ceil(n_buckets)) - 1; | |
3926 | /* Multiplier chosen to make the trivial 1 bit case to | |
3927 | * actually distribute amongst two equal weight buckets. */ | |
3928 | uint32_t basis = 0xc2b73583 * (ctx->xin->flow.dp_hash & mask); | |
3929 | ||
3930 | ctx->wc->masks.dp_hash |= mask; | |
3931 | bucket = group_best_live_bucket(ctx, group, basis); | |
3932 | if (bucket) { | |
3933 | xlate_group_bucket(ctx, bucket); | |
3934 | xlate_group_stats(ctx, group, bucket); | |
3935 | } | |
3936 | } | |
3937 | } | |
3938 | } | |
3939 | ||
7565c3e4 SH |
3940 | static void |
3941 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3942 | { | |
07a3cd5c | 3943 | const char *selection_method = group->up.props.selection_method; |
7565c3e4 | 3944 | |
e12ec36b SH |
3945 | /* Select groups may access flow keys beyond L2 in order to |
3946 | * select a bucket. Recirculate as appropriate to make this possible. | |
3947 | */ | |
3948 | if (ctx->was_mpls) { | |
3949 | ctx_trigger_freeze(ctx); | |
3950 | } | |
3951 | ||
7565c3e4 SH |
3952 | if (selection_method[0] == '\0') { |
3953 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
3954 | } else if (!strcasecmp("hash", selection_method)) { |
3955 | xlate_hash_fields_select_group(ctx, group); | |
53cc166a JR |
3956 | } else if (!strcasecmp("dp_hash", selection_method)) { |
3957 | xlate_dp_hash_select_group(ctx, group); | |
7565c3e4 SH |
3958 | } else { |
3959 | /* Parsing of groups should ensure this never happens */ | |
3960 | OVS_NOT_REACHED(); | |
3961 | } | |
3962 | } | |
3963 | ||
f4fb341b SH |
3964 | static void |
3965 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3966 | { | |
0eb48fe1 | 3967 | bool was_in_group = ctx->in_group; |
5a070238 BP |
3968 | ctx->in_group = true; |
3969 | ||
07a3cd5c | 3970 | switch (group->up.type) { |
f4fb341b SH |
3971 | case OFPGT11_ALL: |
3972 | case OFPGT11_INDIRECT: | |
3973 | xlate_all_group(ctx, group); | |
3974 | break; | |
3975 | case OFPGT11_SELECT: | |
fe7e5749 | 3976 | xlate_select_group(ctx, group); |
f4fb341b | 3977 | break; |
dd8cd4b4 SH |
3978 | case OFPGT11_FF: |
3979 | xlate_ff_group(ctx, group); | |
3980 | break; | |
f4fb341b | 3981 | default: |
428b2edd | 3982 | OVS_NOT_REACHED(); |
f4fb341b | 3983 | } |
5a070238 | 3984 | |
0eb48fe1 | 3985 | ctx->in_group = was_in_group; |
f4fb341b SH |
3986 | } |
3987 | ||
3988 | static bool | |
3989 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3990 | { | |
0eb48fe1 | 3991 | if (xlate_resubmit_resource_check(ctx)) { |
f4fb341b | 3992 | struct group_dpif *group; |
f4fb341b | 3993 | |
76973237 JR |
3994 | /* Take ref only if xcache exists. */ |
3995 | group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, | |
1f4a8933 | 3996 | ctx->xin->tables_version, ctx->xin->xcache); |
db88b35c JR |
3997 | if (!group) { |
3998 | /* XXX: Should set ctx->error ? */ | |
2d9b49dd BP |
3999 | xlate_report(ctx, OFT_WARN, "output to nonexistent group %"PRIu32, |
4000 | group_id); | |
f4fb341b SH |
4001 | return true; |
4002 | } | |
db88b35c | 4003 | xlate_group_action__(ctx, group); |
f4fb341b SH |
4004 | } |
4005 | ||
4006 | return false; | |
4007 | } | |
4008 | ||
9583bc14 EJ |
4009 | static void |
4010 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
4011 | const struct ofpact_resubmit *resubmit) | |
4012 | { | |
4e022ec0 | 4013 | ofp_port_t in_port; |
9583bc14 | 4014 | uint8_t table_id; |
adcf00ba AZ |
4015 | bool may_packet_in = false; |
4016 | bool honor_table_miss = false; | |
4017 | ||
4018 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
4019 | /* Still allow missed packets to be sent to the controller | |
4020 | * if resubmitting from an internal table. */ | |
4021 | may_packet_in = true; | |
4022 | honor_table_miss = true; | |
4023 | } | |
9583bc14 EJ |
4024 | |
4025 | in_port = resubmit->in_port; | |
4026 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 4027 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
4028 | } |
4029 | ||
4030 | table_id = resubmit->table_id; | |
4031 | if (table_id == 255) { | |
4032 | table_id = ctx->table_id; | |
4033 | } | |
4034 | ||
adcf00ba | 4035 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2cd20955 | 4036 | honor_table_miss, resubmit->with_ct_orig); |
9583bc14 EJ |
4037 | } |
4038 | ||
4039 | static void | |
4040 | flood_packets(struct xlate_ctx *ctx, bool all) | |
4041 | { | |
46c88433 | 4042 | const struct xport *xport; |
9583bc14 | 4043 | |
46c88433 EJ |
4044 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
4045 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
4046 | continue; |
4047 | } | |
4048 | ||
4049 | if (all) { | |
e93ef1c7 | 4050 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 4051 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 4052 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
4053 | } |
4054 | } | |
4055 | ||
2031ef97 | 4056 | ctx->nf_output_iface = NF_OUT_FLOOD; |
9583bc14 EJ |
4057 | } |
4058 | ||
27d931da AZ |
4059 | /* Copy and reformat a partially xlated odp actions to a new |
4060 | * odp actions list in 'b', so that the new actions list | |
4061 | * can be executed by odp_execute_actions. | |
4062 | * | |
4063 | * When xlate using nested odp actions, such as sample and clone, | |
4064 | * the nested action created by nl_msg_start_nested() may not | |
4065 | * have been properly closed yet, thus can not be executed | |
4066 | * directly. | |
4067 | * | |
4068 | * Since unclosed nested action has to be last action, it can be | |
4069 | * fixed by skipping the outer header, and treating the actions within | |
4070 | * as if they are outside the nested attribute since the effect | |
4071 | * of executing them on packet is the same. | |
4072 | * | |
4073 | * As an optimization, a fully closed 'sample' or 'clone' action | |
4074 | * is skipped since their execution has no effect to the packet. | |
4075 | * | |
4076 | * Returns true if success. 'b' contains the new actions list. | |
4077 | * The caller is responsible for disposing 'b'. | |
4078 | * | |
4079 | * Returns false if error, 'b' has been freed already. */ | |
4080 | static bool | |
4081 | xlate_fixup_actions(struct ofpbuf *b, const struct nlattr *actions, | |
4082 | size_t actions_len) | |
4083 | { | |
4084 | const struct nlattr *a; | |
4085 | unsigned int left; | |
4086 | ||
4087 | NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) { | |
4088 | int type = nl_attr_type(a); | |
4089 | ||
4090 | switch ((enum ovs_action_attr) type) { | |
4091 | case OVS_ACTION_ATTR_HASH: | |
4092 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
4093 | case OVS_ACTION_ATTR_POP_VLAN: | |
4094 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
4095 | case OVS_ACTION_ATTR_POP_MPLS: | |
4096 | case OVS_ACTION_ATTR_SET: | |
4097 | case OVS_ACTION_ATTR_SET_MASKED: | |
4098 | case OVS_ACTION_ATTR_TRUNC: | |
4099 | case OVS_ACTION_ATTR_OUTPUT: | |
4100 | case OVS_ACTION_ATTR_TUNNEL_PUSH: | |
4101 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
4102 | case OVS_ACTION_ATTR_USERSPACE: | |
4103 | case OVS_ACTION_ATTR_RECIRC: | |
4104 | case OVS_ACTION_ATTR_CT: | |
0d11fc52 JR |
4105 | case OVS_ACTION_ATTR_PUSH_ETH: |
4106 | case OVS_ACTION_ATTR_POP_ETH: | |
5dddf960 | 4107 | case OVS_ACTION_ATTR_METER: |
27d931da AZ |
4108 | ofpbuf_put(b, a, nl_attr_len_pad(a, left)); |
4109 | break; | |
4110 | ||
4111 | case OVS_ACTION_ATTR_CLONE: | |
4112 | /* If the clone action has been fully xlated, it can | |
4113 | * be skipped, since any actions executed within clone | |
4114 | * do not affect the current packet. | |
4115 | * | |
4116 | * When xlating actions within clone, the clone action, | |
4117 | * because it is an nested netlink attribute, do not have | |
4118 | * a valid 'nla_len'; it will be zero instead. Skip | |
4119 | * the clone header to find the start of the actions | |
4120 | * enclosed. Treat those actions as if they are written | |
4121 | * outside of clone. */ | |
4122 | if (!a->nla_len) { | |
4123 | bool ok; | |
4124 | if (left < NLA_HDRLEN) { | |
4125 | goto error; | |
4126 | } | |
4127 | ||
4128 | ok = xlate_fixup_actions(b, nl_attr_get_unspec(a, 0), | |
4129 | left - NLA_HDRLEN); | |
4130 | if (!ok) { | |
4131 | goto error; | |
4132 | } | |
4133 | } | |
4134 | break; | |
4135 | ||
4136 | case OVS_ACTION_ATTR_SAMPLE: | |
4137 | if (!a->nla_len) { | |
4138 | bool ok; | |
4139 | if (left < NLA_HDRLEN) { | |
4140 | goto error; | |
4141 | } | |
4142 | const struct nlattr *attr = nl_attr_get_unspec(a, 0); | |
4143 | left -= NLA_HDRLEN; | |
4144 | ||
4145 | while (left > 0 && | |
4146 | nl_attr_type(attr) != OVS_SAMPLE_ATTR_ACTIONS) { | |
4147 | /* Only OVS_SAMPLE_ATTR_ACTIONS can have unclosed | |
4148 | * nested netlink attribute. */ | |
4149 | if (!attr->nla_len) { | |
4150 | goto error; | |
4151 | } | |
4152 | ||
4153 | left -= NLA_ALIGN(attr->nla_len); | |
4154 | attr = nl_attr_next(attr); | |
4155 | } | |
4156 | ||
4157 | if (left < NLA_HDRLEN) { | |
4158 | goto error; | |
4159 | } | |
4160 | ||
4161 | ok = xlate_fixup_actions(b, nl_attr_get_unspec(attr, 0), | |
4162 | left - NLA_HDRLEN); | |
4163 | if (!ok) { | |
4164 | goto error; | |
4165 | } | |
4166 | } | |
4167 | break; | |
4168 | ||
4169 | case OVS_ACTION_ATTR_UNSPEC: | |
4170 | case __OVS_ACTION_ATTR_MAX: | |
4171 | OVS_NOT_REACHED(); | |
4172 | } | |
4173 | } | |
4174 | ||
4175 | return true; | |
4176 | ||
4177 | error: | |
4178 | ofpbuf_delete(b); | |
4179 | return false; | |
4180 | } | |
4181 | ||
4182 | static bool | |
4183 | xlate_execute_odp_actions(struct dp_packet *packet, | |
4184 | const struct nlattr *actions, int actions_len) | |
4185 | { | |
4186 | struct dp_packet_batch batch; | |
4187 | struct ofpbuf *b = ofpbuf_new(actions_len); | |
4188 | ||
4189 | if (!xlate_fixup_actions(b, actions, actions_len)) { | |
4190 | return false; | |
4191 | } | |
4192 | ||
4193 | dp_packet_batch_init_packet(&batch, packet); | |
4194 | odp_execute_actions(NULL, &batch, false, b->data, b->size, NULL); | |
4195 | ofpbuf_delete(b); | |
4196 | ||
4197 | return true; | |
4198 | } | |
4199 | ||
9583bc14 EJ |
4200 | static void |
4201 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
4202 | enum ofp_packet_in_reason reason, | |
bdcad671 BP |
4203 | uint16_t controller_id, |
4204 | const uint8_t *userdata, size_t userdata_len) | |
9583bc14 | 4205 | { |
e14deea0 | 4206 | struct dp_packet *packet; |
9583bc14 | 4207 | |
04594cd5 | 4208 | ctx->xout->slow |= SLOW_CONTROLLER; |
b476e2f2 | 4209 | xlate_commit_actions(ctx); |
9583bc14 EJ |
4210 | if (!ctx->xin->packet) { |
4211 | return; | |
4212 | } | |
4213 | ||
df70a773 JR |
4214 | if (!ctx->xin->allow_side_effects && !ctx->xin->xcache) { |
4215 | return; | |
4216 | } | |
4217 | ||
cf62fa4c | 4218 | packet = dp_packet_clone(ctx->xin->packet); |
27d931da AZ |
4219 | if (!xlate_execute_odp_actions(packet, ctx->odp_actions->data, |
4220 | ctx->odp_actions->size)) { | |
4221 | xlate_report_error(ctx, "Failed to execute controller action"); | |
4222 | dp_packet_delete(packet); | |
4223 | return; | |
4224 | } | |
9bfe9334 BP |
4225 | /* A packet sent by an action in a table-miss rule is considered an |
4226 | * explicit table miss. OpenFlow before 1.3 doesn't have that concept so | |
4227 | * it will get translated back to OFPR_ACTION for those versions. */ | |
4228 | if (reason == OFPR_ACTION | |
07a3cd5c | 4229 | && ctx->rule && rule_is_table_miss(&ctx->rule->up)) { |
9bfe9334 BP |
4230 | reason = OFPR_EXPLICIT_MISS; |
4231 | } | |
4232 | ||
4233 | size_t packet_len = dp_packet_size(packet); | |
0fb7792a | 4234 | |
a2b53dec BP |
4235 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
4236 | *am = (struct ofproto_async_msg) { | |
9bfe9334 | 4237 | .controller_id = controller_id, |
a2b53dec BP |
4238 | .oam = OAM_PACKET_IN, |
4239 | .pin = { | |
4240 | .up = { | |
77ab5fd2 BP |
4241 | .public = { |
4242 | .packet = dp_packet_steal_data(packet), | |
4243 | .packet_len = packet_len, | |
4244 | .reason = reason, | |
4245 | .table_id = ctx->table_id, | |
4246 | .cookie = ctx->rule_cookie, | |
4247 | .userdata = (userdata_len | |
4248 | ? xmemdup(userdata, userdata_len) | |
4249 | : NULL), | |
4250 | .userdata_len = userdata_len, | |
4251 | } | |
a2b53dec BP |
4252 | }, |
4253 | .max_len = len, | |
9bfe9334 | 4254 | }, |
9bfe9334 | 4255 | }; |
77ab5fd2 | 4256 | flow_get_metadata(&ctx->xin->flow, &am->pin.up.public.flow_metadata); |
9583bc14 | 4257 | |
df70a773 JR |
4258 | /* Async messages are only sent once, so if we send one now, no |
4259 | * xlate cache entry is created. */ | |
4260 | if (ctx->xin->allow_side_effects) { | |
4261 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); | |
4262 | } else /* xcache */ { | |
4263 | struct xc_entry *entry; | |
4264 | ||
4265 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_CONTROLLER); | |
4266 | entry->controller.ofproto = ctx->xbridge->ofproto; | |
4267 | entry->controller.am = am; | |
4268 | } | |
3b4fff43 RM |
4269 | |
4270 | dp_packet_delete(packet); | |
9583bc14 EJ |
4271 | } |
4272 | ||
7bbdd84f | 4273 | static void |
77ab5fd2 | 4274 | emit_continuation(struct xlate_ctx *ctx, const struct frozen_state *state) |
7bbdd84f | 4275 | { |
df70a773 JR |
4276 | if (!ctx->xin->allow_side_effects && !ctx->xin->xcache) { |
4277 | return; | |
4278 | } | |
4279 | ||
77ab5fd2 BP |
4280 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
4281 | *am = (struct ofproto_async_msg) { | |
4282 | .controller_id = ctx->pause->controller_id, | |
4283 | .oam = OAM_PACKET_IN, | |
4284 | .pin = { | |
4285 | .up = { | |
4286 | .public = { | |
4287 | .userdata = xmemdup(ctx->pause->userdata, | |
4288 | ctx->pause->userdata_len), | |
4289 | .userdata_len = ctx->pause->userdata_len, | |
4290 | .packet = xmemdup(dp_packet_data(ctx->xin->packet), | |
4291 | dp_packet_size(ctx->xin->packet)), | |
4292 | .packet_len = dp_packet_size(ctx->xin->packet), | |
0b024e49 | 4293 | .reason = ctx->pause->reason, |
77ab5fd2 | 4294 | }, |
07a3cd5c | 4295 | .bridge = ctx->xbridge->ofproto->uuid, |
84cf3c1f JR |
4296 | .stack = xmemdup(state->stack, state->stack_size), |
4297 | .stack_size = state->stack_size, | |
77ab5fd2 BP |
4298 | .mirrors = state->mirrors, |
4299 | .conntracked = state->conntracked, | |
4300 | .actions = xmemdup(state->ofpacts, state->ofpacts_len), | |
4301 | .actions_len = state->ofpacts_len, | |
4302 | .action_set = xmemdup(state->action_set, | |
4303 | state->action_set_len), | |
4304 | .action_set_len = state->action_set_len, | |
4305 | }, | |
4306 | .max_len = UINT16_MAX, | |
4307 | }, | |
4308 | }; | |
4309 | flow_get_metadata(&ctx->xin->flow, &am->pin.up.public.flow_metadata); | |
df70a773 JR |
4310 | |
4311 | /* Async messages are only sent once, so if we send one now, no | |
4312 | * xlate cache entry is created. */ | |
4313 | if (ctx->xin->allow_side_effects) { | |
4314 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); | |
4315 | } else /* xcache */ { | |
4316 | struct xc_entry *entry; | |
4317 | ||
4318 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_CONTROLLER); | |
4319 | entry->controller.ofproto = ctx->xbridge->ofproto; | |
4320 | entry->controller.am = am; | |
4321 | } | |
77ab5fd2 | 4322 | } |
7bbdd84f | 4323 | |
77ab5fd2 BP |
4324 | static void |
4325 | finish_freezing__(struct xlate_ctx *ctx, uint8_t table) | |
4326 | { | |
1d361a81 | 4327 | ovs_assert(ctx->freezing); |
7bbdd84f | 4328 | |
1d361a81 | 4329 | struct frozen_state state = { |
07659514 | 4330 | .table_id = table, |
07a3cd5c | 4331 | .ofproto_uuid = ctx->xbridge->ofproto->uuid, |
5c1b2314 | 4332 | .stack = ctx->stack.data, |
84cf3c1f | 4333 | .stack_size = ctx->stack.size, |
29bae541 | 4334 | .mirrors = ctx->mirrors, |
07659514 | 4335 | .conntracked = ctx->conntracked, |
1d361a81 BP |
4336 | .ofpacts = ctx->frozen_actions.data, |
4337 | .ofpacts_len = ctx->frozen_actions.size, | |
417509fa | 4338 | .action_set = ctx->action_set.data, |
8a5fb3b4 | 4339 | .action_set_len = ctx->action_set.size, |
2082425c | 4340 | }; |
77ab5fd2 | 4341 | frozen_metadata_from_flow(&state.metadata, &ctx->xin->flow); |
2082425c | 4342 | |
77ab5fd2 BP |
4343 | if (ctx->pause) { |
4344 | if (ctx->xin->packet) { | |
4345 | emit_continuation(ctx, &state); | |
4346 | } | |
4347 | } else { | |
4348 | /* Allocate a unique recirc id for the given metadata state in the | |
4349 | * flow. An existing id, with a new reference to the corresponding | |
4350 | * recirculation context, will be returned if possible. | |
4351 | * The life-cycle of this recirc id is managed by associating it | |
4352 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
4353 | uint32_t id = recirc_alloc_id_ctx(&state); | |
4354 | if (!id) { | |
2d9b49dd | 4355 | xlate_report_error(ctx, "Failed to allocate recirculation id"); |
77ab5fd2 BP |
4356 | ctx->error = XLATE_NO_RECIRCULATION_CONTEXT; |
4357 | return; | |
4358 | } | |
4359 | recirc_refs_add(&ctx->xout->recircs, id); | |
7bbdd84f | 4360 | |
53cc166a JR |
4361 | if (ctx->recirc_update_dp_hash) { |
4362 | struct ovs_action_hash *act_hash; | |
4363 | ||
4364 | /* Hash action. */ | |
4365 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
4366 | OVS_ACTION_ATTR_HASH, | |
4367 | sizeof *act_hash); | |
4368 | act_hash->hash_alg = OVS_HASH_ALG_L4; /* Make configurable. */ | |
4369 | act_hash->hash_basis = 0; /* Make configurable. */ | |
4370 | } | |
77ab5fd2 BP |
4371 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
4372 | } | |
e672ff9b | 4373 | |
1d361a81 BP |
4374 | /* Undo changes done by freezing. */ |
4375 | ctx_cancel_freeze(ctx); | |
7bbdd84f SH |
4376 | } |
4377 | ||
1d361a81 | 4378 | /* Called only when we're freezing. */ |
07659514 | 4379 | static void |
77ab5fd2 | 4380 | finish_freezing(struct xlate_ctx *ctx) |
07659514 JS |
4381 | { |
4382 | xlate_commit_actions(ctx); | |
77ab5fd2 | 4383 | finish_freezing__(ctx, 0); |
07659514 JS |
4384 | } |
4385 | ||
e37b8437 JS |
4386 | /* Fork the pipeline here. The current packet will continue processing the |
4387 | * current action list. A clone of the current packet will recirculate, skip | |
4388 | * the remainder of the current action list and asynchronously resume pipeline | |
4389 | * processing in 'table' with the current metadata and action set. */ | |
4390 | static void | |
4391 | compose_recirculate_and_fork(struct xlate_ctx *ctx, uint8_t table) | |
4392 | { | |
1d361a81 | 4393 | ctx->freezing = true; |
77ab5fd2 | 4394 | finish_freezing__(ctx, table); |
e37b8437 JS |
4395 | } |
4396 | ||
8bfd0fda BP |
4397 | static void |
4398 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 4399 | { |
33bf9176 | 4400 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 4401 | int n; |
33bf9176 | 4402 | |
8bfd0fda | 4403 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 4404 | |
49a73e0c | 4405 | n = flow_count_mpls_labels(flow, ctx->wc); |
8bfd0fda | 4406 | if (!n) { |
704bb0bf | 4407 | xlate_commit_actions(ctx); |
8bfd0fda BP |
4408 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
4409 | if (ctx->xin->packet != NULL) { | |
2d9b49dd BP |
4410 | xlate_report_error(ctx, "dropping packet on which an MPLS push " |
4411 | "action can't be performed as it would have " | |
4412 | "more MPLS LSEs than the %d supported.", | |
4413 | FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 4414 | } |
fff1b9c0 | 4415 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
8bfd0fda | 4416 | return; |
9583bc14 | 4417 | } |
b0a17866 | 4418 | |
742c0ac3 JR |
4419 | /* Update flow's MPLS stack, and clear L3/4 fields to mark them invalid. */ |
4420 | flow_push_mpls(flow, n, mpls->ethertype, ctx->wc, true); | |
9583bc14 EJ |
4421 | } |
4422 | ||
8bfd0fda | 4423 | static void |
9cfef3d0 | 4424 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 4425 | { |
8bfd0fda | 4426 | struct flow *flow = &ctx->xin->flow; |
49a73e0c | 4427 | int n = flow_count_mpls_labels(flow, ctx->wc); |
33bf9176 | 4428 | |
49a73e0c | 4429 | if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) { |
8bf009bf | 4430 | if (!eth_type_mpls(eth_type) && ctx->xbridge->support.odp.recirc) { |
e12ec36b | 4431 | ctx->was_mpls = true; |
7bbdd84f SH |
4432 | } |
4433 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda | 4434 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
4435 | xlate_report_error(ctx, "dropping packet on which an " |
4436 | "MPLS pop action can't be performed as it has " | |
4437 | "more MPLS LSEs than the %d supported.", | |
4438 | FLOW_MAX_MPLS_LABELS); | |
8bfd0fda | 4439 | } |
fff1b9c0 | 4440 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
1520ef4f | 4441 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
4442 | } |
4443 | } | |
4444 | ||
4445 | static bool | |
4446 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
4447 | { | |
33bf9176 BP |
4448 | struct flow *flow = &ctx->xin->flow; |
4449 | ||
4450 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
4451 | return false; |
4452 | } | |
4453 | ||
49a73e0c | 4454 | ctx->wc->masks.nw_ttl = 0xff; |
33bf9176 BP |
4455 | if (flow->nw_ttl > 1) { |
4456 | flow->nw_ttl--; | |
9583bc14 EJ |
4457 | return false; |
4458 | } else { | |
4459 | size_t i; | |
4460 | ||
4461 | for (i = 0; i < ids->n_controllers; i++) { | |
4462 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
bdcad671 | 4463 | ids->cnt_ids[i], NULL, 0); |
9583bc14 EJ |
4464 | } |
4465 | ||
4466 | /* Stop processing for current table. */ | |
2d9b49dd BP |
4467 | xlate_report(ctx, OFT_WARN, "IPv%d decrement TTL exception", |
4468 | flow->dl_type == htons(ETH_TYPE_IP) ? 4 : 6); | |
9583bc14 EJ |
4469 | return true; |
4470 | } | |
4471 | } | |
4472 | ||
8bfd0fda | 4473 | static void |
097d4939 JR |
4474 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
4475 | { | |
8bfd0fda | 4476 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4477 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); |
8bfd0fda | 4478 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); |
097d4939 | 4479 | } |
097d4939 JR |
4480 | } |
4481 | ||
8bfd0fda | 4482 | static void |
097d4939 JR |
4483 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
4484 | { | |
8bfd0fda | 4485 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4486 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); |
8bfd0fda | 4487 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); |
097d4939 | 4488 | } |
097d4939 JR |
4489 | } |
4490 | ||
8bfd0fda | 4491 | static void |
9cfef3d0 | 4492 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 4493 | { |
8bfd0fda | 4494 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4495 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda | 4496 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); |
b0a17866 | 4497 | } |
9583bc14 EJ |
4498 | } |
4499 | ||
4500 | static bool | |
9cfef3d0 | 4501 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 4502 | { |
33bf9176 | 4503 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a | 4504 | |
8bfd0fda | 4505 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
4506 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
4507 | ||
49a73e0c | 4508 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda BP |
4509 | if (ttl > 1) { |
4510 | ttl--; | |
4511 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
4512 | return false; | |
4513 | } else { | |
bdcad671 BP |
4514 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0, |
4515 | NULL, 0); | |
8bfd0fda | 4516 | } |
9583bc14 | 4517 | } |
22d38fca JR |
4518 | |
4519 | /* Stop processing for current table. */ | |
2d9b49dd | 4520 | xlate_report(ctx, OFT_WARN, "MPLS decrement TTL exception"); |
22d38fca | 4521 | return true; |
9583bc14 EJ |
4522 | } |
4523 | ||
4524 | static void | |
4525 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 4526 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 4527 | { |
2031ef97 | 4528 | ofp_port_t prev_nf_output_iface = ctx->nf_output_iface; |
9583bc14 | 4529 | |
2031ef97 | 4530 | ctx->nf_output_iface = NF_OUT_DROP; |
9583bc14 EJ |
4531 | |
4532 | switch (port) { | |
4533 | case OFPP_IN_PORT: | |
e93ef1c7 | 4534 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
4535 | break; |
4536 | case OFPP_TABLE: | |
4e022ec0 | 4537 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2cd20955 | 4538 | 0, may_packet_in, true, false); |
9583bc14 EJ |
4539 | break; |
4540 | case OFPP_NORMAL: | |
4541 | xlate_normal(ctx); | |
4542 | break; | |
4543 | case OFPP_FLOOD: | |
4544 | flood_packets(ctx, false); | |
4545 | break; | |
4546 | case OFPP_ALL: | |
4547 | flood_packets(ctx, true); | |
4548 | break; | |
4549 | case OFPP_CONTROLLER: | |
3a11fd5b | 4550 | execute_controller_action(ctx, max_len, |
331c07ac YHW |
4551 | (ctx->in_packet_out ? OFPR_PACKET_OUT |
4552 | : ctx->in_group ? OFPR_GROUP | |
029ca940 SS |
4553 | : ctx->in_action_set ? OFPR_ACTION_SET |
4554 | : OFPR_ACTION), | |
bdcad671 | 4555 | 0, NULL, 0); |
9583bc14 EJ |
4556 | break; |
4557 | case OFPP_NONE: | |
4558 | break; | |
4559 | case OFPP_LOCAL: | |
4560 | default: | |
4e022ec0 | 4561 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 4562 | compose_output_action(ctx, port, NULL); |
9583bc14 | 4563 | } else { |
2d9b49dd | 4564 | xlate_report(ctx, OFT_WARN, "skipping output to input port"); |
9583bc14 EJ |
4565 | } |
4566 | break; | |
4567 | } | |
4568 | ||
4569 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2031ef97 BP |
4570 | ctx->nf_output_iface = NF_OUT_FLOOD; |
4571 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
4572 | ctx->nf_output_iface = prev_nf_output_iface; | |
9583bc14 | 4573 | } else if (prev_nf_output_iface != NF_OUT_DROP && |
2031ef97 BP |
4574 | ctx->nf_output_iface != NF_OUT_FLOOD) { |
4575 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
4576 | } |
4577 | } | |
4578 | ||
4579 | static void | |
4580 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
4581 | const struct ofpact_output_reg *or) | |
4582 | { | |
4583 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
4584 | if (port <= UINT16_MAX) { | |
2d9b49dd BP |
4585 | xlate_report(ctx, OFT_DETAIL, "output port is %"PRIu64, port); |
4586 | ||
9583bc14 EJ |
4587 | union mf_subvalue value; |
4588 | ||
4589 | memset(&value, 0xff, sizeof value); | |
49a73e0c | 4590 | mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks); |
2d9b49dd BP |
4591 | xlate_output_action(ctx, u16_to_ofp(port), or->max_len, false); |
4592 | } else { | |
4593 | xlate_report(ctx, OFT_WARN, "output port %"PRIu64" is out of range", | |
4594 | port); | |
9583bc14 EJ |
4595 | } |
4596 | } | |
4597 | ||
aaca4fe0 WT |
4598 | static void |
4599 | xlate_output_trunc_action(struct xlate_ctx *ctx, | |
4600 | ofp_port_t port, uint32_t max_len) | |
4601 | { | |
4602 | bool support_trunc = ctx->xbridge->support.trunc; | |
4603 | struct ovs_action_trunc *trunc; | |
2f2b904f | 4604 | char name[OFP10_MAX_PORT_NAME_LEN]; |
aaca4fe0 WT |
4605 | |
4606 | switch (port) { | |
4607 | case OFPP_TABLE: | |
4608 | case OFPP_NORMAL: | |
4609 | case OFPP_FLOOD: | |
4610 | case OFPP_ALL: | |
4611 | case OFPP_CONTROLLER: | |
4612 | case OFPP_NONE: | |
4613 | ofputil_port_to_string(port, name, sizeof name); | |
2d9b49dd BP |
4614 | xlate_report(ctx, OFT_WARN, |
4615 | "output_trunc does not support port: %s", name); | |
aaca4fe0 WT |
4616 | break; |
4617 | case OFPP_LOCAL: | |
4618 | case OFPP_IN_PORT: | |
4619 | default: | |
4620 | if (port != ctx->xin->flow.in_port.ofp_port) { | |
4621 | const struct xport *xport = get_ofp_port(ctx->xbridge, port); | |
4622 | ||
4623 | if (xport == NULL || xport->odp_port == ODPP_NONE) { | |
4624 | /* Since truncate happens at its following output action, if | |
4625 | * the output port is a patch port, the behavior is somehow | |
4626 | * unpredicable. For simpilicity, disallow this case. */ | |
4627 | ofputil_port_to_string(port, name, sizeof name); | |
2d9b49dd BP |
4628 | xlate_report_error(ctx, "output_trunc does not support " |
4629 | "patch port %s", name); | |
aaca4fe0 WT |
4630 | break; |
4631 | } | |
4632 | ||
4633 | trunc = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
4634 | OVS_ACTION_ATTR_TRUNC, | |
4635 | sizeof *trunc); | |
4636 | trunc->max_len = max_len; | |
4637 | xlate_output_action(ctx, port, max_len, false); | |
4638 | if (!support_trunc) { | |
4639 | ctx->xout->slow |= SLOW_ACTION; | |
4640 | } | |
4641 | } else { | |
2d9b49dd | 4642 | xlate_report(ctx, OFT_WARN, "skipping output to input port"); |
aaca4fe0 WT |
4643 | } |
4644 | break; | |
4645 | } | |
4646 | } | |
4647 | ||
9583bc14 EJ |
4648 | static void |
4649 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
4650 | const struct ofpact_enqueue *enqueue) | |
4651 | { | |
4e022ec0 | 4652 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
4653 | uint32_t queue_id = enqueue->queue; |
4654 | uint32_t flow_priority, priority; | |
4655 | int error; | |
4656 | ||
4657 | /* Translate queue to priority. */ | |
89a8a7f0 | 4658 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
4659 | if (error) { |
4660 | /* Fall back to ordinary output action. */ | |
4661 | xlate_output_action(ctx, enqueue->port, 0, false); | |
4662 | return; | |
4663 | } | |
4664 | ||
4665 | /* Check output port. */ | |
4666 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
4667 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
4668 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
4669 | return; |
4670 | } | |
4671 | ||
4672 | /* Add datapath actions. */ | |
4673 | flow_priority = ctx->xin->flow.skb_priority; | |
4674 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 4675 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
4676 | ctx->xin->flow.skb_priority = flow_priority; |
4677 | ||
4678 | /* Update NetFlow output port. */ | |
2031ef97 BP |
4679 | if (ctx->nf_output_iface == NF_OUT_DROP) { |
4680 | ctx->nf_output_iface = ofp_port; | |
4681 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { | |
4682 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
4683 | } |
4684 | } | |
4685 | ||
4686 | static void | |
4687 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
4688 | { | |
4689 | uint32_t skb_priority; | |
4690 | ||
89a8a7f0 | 4691 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
4692 | ctx->xin->flow.skb_priority = skb_priority; |
4693 | } else { | |
4694 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
4695 | * has already been logged. */ | |
4696 | } | |
4697 | } | |
4698 | ||
4699 | static bool | |
46c88433 | 4700 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 4701 | { |
46c88433 EJ |
4702 | const struct xbridge *xbridge = xbridge_; |
4703 | struct xport *port; | |
9583bc14 EJ |
4704 | |
4705 | switch (ofp_port) { | |
4706 | case OFPP_IN_PORT: | |
4707 | case OFPP_TABLE: | |
4708 | case OFPP_NORMAL: | |
4709 | case OFPP_FLOOD: | |
4710 | case OFPP_ALL: | |
4711 | case OFPP_NONE: | |
4712 | return true; | |
4713 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
4714 | return false; | |
4715 | default: | |
46c88433 | 4716 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
4717 | return port ? port->may_enable : false; |
4718 | } | |
4719 | } | |
4720 | ||
4721 | static void | |
4722 | xlate_bundle_action(struct xlate_ctx *ctx, | |
4723 | const struct ofpact_bundle *bundle) | |
4724 | { | |
4e022ec0 | 4725 | ofp_port_t port; |
9583bc14 | 4726 | |
49a73e0c | 4727 | port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb, |
46c88433 | 4728 | CONST_CAST(struct xbridge *, ctx->xbridge)); |
9583bc14 | 4729 | if (bundle->dst.field) { |
49a73e0c | 4730 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc); |
2d9b49dd | 4731 | xlate_report_subfield(ctx, &bundle->dst); |
9583bc14 EJ |
4732 | } else { |
4733 | xlate_output_action(ctx, port, 0, false); | |
4734 | } | |
4735 | } | |
4736 | ||
4165b5e0 JS |
4737 | static void |
4738 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
4739 | { | |
49a73e0c | 4740 | learn_mask(learn, ctx->wc); |
9583bc14 | 4741 | |
df70a773 | 4742 | if (ctx->xin->xcache || ctx->xin->allow_side_effects) { |
4165b5e0 JS |
4743 | uint64_t ofpacts_stub[1024 / 8]; |
4744 | struct ofputil_flow_mod fm; | |
2c7ee524 | 4745 | struct ofproto_flow_mod ofm__, *ofm; |
4165b5e0 | 4746 | struct ofpbuf ofpacts; |
2c7ee524 JR |
4747 | enum ofperr error; |
4748 | ||
4749 | if (ctx->xin->xcache) { | |
3f3b97b0 | 4750 | ofm = xmalloc(sizeof *ofm); |
2c7ee524 JR |
4751 | } else { |
4752 | ofm = &ofm__; | |
4753 | } | |
4165b5e0 JS |
4754 | |
4755 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
2c7ee524 | 4756 | learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts); |
2d9b49dd BP |
4757 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
4758 | struct ds s = DS_EMPTY_INITIALIZER; | |
4759 | ds_put_format(&s, "table=%"PRIu8" ", fm.table_id); | |
4760 | match_format(&fm.match, &s, OFP_DEFAULT_PRIORITY); | |
4761 | ds_chomp(&s, ' '); | |
4762 | ds_put_format(&s, " priority=%d", fm.priority); | |
4763 | if (fm.new_cookie) { | |
4764 | ds_put_format(&s, " cookie=%#"PRIx64, ntohll(fm.new_cookie)); | |
4765 | } | |
4766 | if (fm.idle_timeout != OFP_FLOW_PERMANENT) { | |
4767 | ds_put_format(&s, " idle=%"PRIu16, fm.idle_timeout); | |
4768 | } | |
4769 | if (fm.hard_timeout != OFP_FLOW_PERMANENT) { | |
4770 | ds_put_format(&s, " hard=%"PRIu16, fm.hard_timeout); | |
4771 | } | |
4772 | if (fm.flags & NX_LEARN_F_SEND_FLOW_REM) { | |
4773 | ds_put_cstr(&s, " send_flow_rem"); | |
4774 | } | |
4775 | ds_put_cstr(&s, " actions="); | |
4776 | ofpacts_format(fm.ofpacts, fm.ofpacts_len, &s); | |
4777 | xlate_report(ctx, OFT_DETAIL, "%s", ds_cstr(&s)); | |
4778 | ds_destroy(&s); | |
4779 | } | |
2c7ee524 JR |
4780 | error = ofproto_dpif_flow_mod_init_for_learn(ctx->xbridge->ofproto, |
4781 | &fm, ofm); | |
4165b5e0 | 4782 | ofpbuf_uninit(&ofpacts); |
2c7ee524 | 4783 | |
3f3b97b0 | 4784 | if (!error) { |
4c71600d | 4785 | bool success = true; |
3f3b97b0 | 4786 | if (ctx->xin->allow_side_effects) { |
4c71600d DDP |
4787 | error = ofproto_flow_mod_learn(ofm, ctx->xin->xcache != NULL, |
4788 | learn->limit, &success); | |
4789 | } else if (learn->limit) { | |
4790 | if (!ofm->temp_rule | |
4791 | || ofm->temp_rule->state != RULE_INSERTED) { | |
4792 | /* The learned rule expired and there are no packets, so | |
4793 | * we cannot learn again. Since the translated actions | |
4794 | * depend on the result of learning, we tell the caller | |
4795 | * that there's no point in caching this result. */ | |
4796 | ctx->xout->avoid_caching = true; | |
4797 | } | |
3f3b97b0 DDP |
4798 | } |
4799 | ||
4c71600d DDP |
4800 | if (learn->flags & NX_LEARN_F_WRITE_RESULT) { |
4801 | nxm_reg_load(&learn->result_dst, success ? 1 : 0, | |
4802 | &ctx->xin->flow, ctx->wc); | |
4803 | xlate_report_subfield(ctx, &learn->result_dst); | |
4804 | } | |
4805 | ||
4806 | if (success && ctx->xin->xcache) { | |
3f3b97b0 DDP |
4807 | struct xc_entry *entry; |
4808 | ||
4809 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4810 | entry->learn.ofm = ofm; | |
4c71600d | 4811 | entry->learn.limit = learn->limit; |
3f3b97b0 DDP |
4812 | ofm = NULL; |
4813 | } | |
4c71600d DDP |
4814 | |
4815 | if (OVS_UNLIKELY(ctx->xin->trace && !success)) { | |
4816 | xlate_report(ctx, OFT_DETAIL, "Limit exceeded, learn failed"); | |
4817 | } | |
3f3b97b0 DDP |
4818 | } |
4819 | ||
4820 | if (ctx->xin->xcache) { | |
4821 | free(ofm); | |
2c7ee524 JR |
4822 | } |
4823 | ||
4824 | if (error) { | |
2d9b49dd BP |
4825 | xlate_report_error(ctx, "LEARN action execution failed (%s).", |
4826 | ofperr_to_string(error)); | |
2c7ee524 | 4827 | } |
2d9b49dd BP |
4828 | } else { |
4829 | xlate_report(ctx, OFT_WARN, | |
4830 | "suppressing side effects, so learn action ignored"); | |
b256dc52 JS |
4831 | } |
4832 | } | |
4833 | ||
4834 | static void | |
4835 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
4836 | uint16_t idle_timeout, uint16_t hard_timeout) | |
4837 | { | |
4838 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
07a3cd5c | 4839 | ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout); |
b256dc52 | 4840 | } |
9583bc14 EJ |
4841 | } |
4842 | ||
9583bc14 EJ |
4843 | static void |
4844 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
4845 | const struct ofpact_fin_timeout *oft) | |
4846 | { | |
b256dc52 | 4847 | if (ctx->rule) { |
df70a773 JR |
4848 | if (ctx->xin->allow_side_effects) { |
4849 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
4850 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
4851 | } | |
b256dc52 JS |
4852 | if (ctx->xin->xcache) { |
4853 | struct xc_entry *entry; | |
4854 | ||
4855 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
4856 | /* XC_RULE already holds a reference on the rule, none is taken |
4857 | * here. */ | |
901a517e JR |
4858 | entry->fin.rule = ctx->rule; |
4859 | entry->fin.idle = oft->fin_idle_timeout; | |
4860 | entry->fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 4861 | } |
9583bc14 EJ |
4862 | } |
4863 | } | |
4864 | ||
4865 | static void | |
4866 | xlate_sample_action(struct xlate_ctx *ctx, | |
4867 | const struct ofpact_sample *os) | |
4868 | { | |
f69f713b BY |
4869 | odp_port_t output_odp_port = ODPP_NONE; |
4870 | odp_port_t tunnel_out_port = ODPP_NONE; | |
4871 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; | |
4872 | bool emit_set_tunnel = false; | |
4873 | ||
4874 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
4875 | return; | |
4876 | } | |
4877 | ||
e824d78d JR |
4878 | /* Scale the probability from 16-bit to 32-bit while representing |
4879 | * the same percentage. */ | |
4880 | uint32_t probability = (os->probability << 16) | os->probability; | |
4881 | ||
b440dd8c | 4882 | if (!ctx->xbridge->support.variable_length_userdata) { |
2d9b49dd BP |
4883 | xlate_report_error(ctx, "ignoring NXAST_SAMPLE action because " |
4884 | "datapath lacks support (needs Linux 3.10+ or " | |
4885 | "kernel module from OVS 1.11+)"); | |
e824d78d JR |
4886 | return; |
4887 | } | |
4888 | ||
f69f713b BY |
4889 | /* If ofp_port in flow sample action is equel to ofp_port, |
4890 | * this sample action is a input port action. */ | |
4891 | if (os->sampling_port != OFPP_NONE && | |
4892 | os->sampling_port != ctx->xin->flow.in_port.ofp_port) { | |
4893 | output_odp_port = ofp_port_to_odp_port(ctx->xbridge, | |
4894 | os->sampling_port); | |
4895 | if (output_odp_port == ODPP_NONE) { | |
2d9b49dd BP |
4896 | xlate_report_error(ctx, "can't use unknown port %d in flow sample " |
4897 | "action", os->sampling_port); | |
f69f713b BY |
4898 | return; |
4899 | } | |
4900 | ||
4901 | if (dpif_ipfix_get_flow_exporter_tunnel_sampling(ipfix, | |
4902 | os->collector_set_id) | |
4903 | && dpif_ipfix_get_tunnel_port(ipfix, output_odp_port)) { | |
4904 | tunnel_out_port = output_odp_port; | |
4905 | emit_set_tunnel = true; | |
4906 | } | |
4907 | } | |
4908 | ||
4909 | xlate_commit_actions(ctx); | |
4910 | /* If 'emit_set_tunnel', sample(sampling_port=1) would translate | |
4911 | * into datapath sample action set(tunnel(...)), sample(...) and | |
4912 | * it is used for sampling egress tunnel information. */ | |
4913 | if (emit_set_tunnel) { | |
4914 | const struct xport *xport = get_ofp_port(ctx->xbridge, | |
4915 | os->sampling_port); | |
4916 | ||
4917 | if (xport && xport->is_tunnel) { | |
4918 | struct flow *flow = &ctx->xin->flow; | |
4919 | tnl_port_send(xport->ofport, flow, ctx->wc); | |
4920 | if (!ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
4921 | struct flow_tnl flow_tnl = flow->tunnel; | |
4922 | ||
4923 | commit_odp_tunnel_action(flow, &ctx->base_flow, | |
4924 | ctx->odp_actions); | |
4925 | flow->tunnel = flow_tnl; | |
4926 | } | |
4927 | } else { | |
2d9b49dd BP |
4928 | xlate_report_error(ctx, |
4929 | "sampling_port:%d should be a tunnel port.", | |
4930 | os->sampling_port); | |
f69f713b BY |
4931 | } |
4932 | } | |
e824d78d | 4933 | |
a6092018 BP |
4934 | union user_action_cookie cookie = { |
4935 | .flow_sample = { | |
4936 | .type = USER_ACTION_COOKIE_FLOW_SAMPLE, | |
4937 | .probability = os->probability, | |
4938 | .collector_set_id = os->collector_set_id, | |
4939 | .obs_domain_id = os->obs_domain_id, | |
4940 | .obs_point_id = os->obs_point_id, | |
f69f713b | 4941 | .output_odp_port = output_odp_port, |
4930ea56 | 4942 | .direction = os->direction, |
a6092018 BP |
4943 | } |
4944 | }; | |
4945 | compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample, | |
f69f713b | 4946 | tunnel_out_port, false); |
9583bc14 EJ |
4947 | } |
4948 | ||
456024cb | 4949 | /* Use datapath 'clone' or sample to enclose the translation of 'oc'. */ |
7ae62a67 WT |
4950 | static void |
4951 | compose_clone_action(struct xlate_ctx *ctx, const struct ofpact_nest *oc) | |
bef503e8 AZ |
4952 | { |
4953 | size_t clone_offset = nl_msg_start_nested(ctx->odp_actions, | |
4954 | OVS_ACTION_ATTR_CLONE); | |
456024cb AZ |
4955 | do_xlate_actions(oc->actions, ofpact_nest_get_action_len(oc), ctx); |
4956 | nl_msg_end_non_empty_nested(ctx->odp_actions, clone_offset); | |
4957 | } | |
4958 | ||
4959 | /* Use datapath 'sample' action to translate clone. */ | |
4960 | static void | |
4961 | compose_clone_action_using_sample(struct xlate_ctx *ctx, | |
4962 | const struct ofpact_nest *oc) | |
4963 | { | |
4964 | size_t offset = nl_msg_start_nested(ctx->odp_actions, | |
4965 | OVS_ACTION_ATTR_SAMPLE); | |
4966 | ||
4967 | size_t ac_offset = nl_msg_start_nested(ctx->odp_actions, | |
4968 | OVS_SAMPLE_ATTR_ACTIONS); | |
bef503e8 AZ |
4969 | |
4970 | do_xlate_actions(oc->actions, ofpact_nest_get_action_len(oc), ctx); | |
4971 | ||
456024cb AZ |
4972 | if (nl_msg_end_non_empty_nested(ctx->odp_actions, ac_offset)) { |
4973 | nl_msg_cancel_nested(ctx->odp_actions, offset); | |
4974 | } else { | |
4975 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
4976 | UINT32_MAX); /* 100% probability. */ | |
4977 | nl_msg_end_nested(ctx->odp_actions, offset); | |
4978 | } | |
bef503e8 AZ |
4979 | } |
4980 | ||
4981 | static void | |
4982 | xlate_clone(struct xlate_ctx *ctx, const struct ofpact_nest *oc) | |
7ae62a67 | 4983 | { |
bd3c2df3 | 4984 | bool old_was_mpls = ctx->was_mpls; |
ba653d2a | 4985 | bool old_conntracked = ctx->conntracked; |
7ae62a67 | 4986 | struct flow old_flow = ctx->xin->flow; |
ba653d2a | 4987 | |
b827b231 BP |
4988 | struct ofpbuf old_stack = ctx->stack; |
4989 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
4990 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); | |
4991 | ofpbuf_put(&ctx->stack, old_stack.data, old_stack.size); | |
4992 | ||
4993 | struct ofpbuf old_action_set = ctx->action_set; | |
4994 | uint64_t actset_stub[1024 / 8]; | |
4995 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); | |
4996 | ofpbuf_put(&ctx->action_set, old_action_set.data, old_action_set.size); | |
4997 | ||
456024cb AZ |
4998 | /* Datapath clone action will make sure the pre clone packets |
4999 | * are used for actions after clone. Save and restore | |
5000 | * ctx->base_flow to reflect this for the openflow pipeline. */ | |
bef503e8 | 5001 | if (ctx->xbridge->support.clone) { |
889ee380 | 5002 | struct flow old_base_flow = ctx->base_flow; |
bef503e8 | 5003 | compose_clone_action(ctx, oc); |
889ee380 AZ |
5004 | ctx->base_flow = old_base_flow; |
5005 | } else if (ctx->xbridge->support.sample_nesting > 3) { | |
5006 | /* Avoid generate sample action if datapath | |
5007 | * only allow small number of nesting. Deeper nesting | |
5008 | * can cause the datapath to reject the generated flow. */ | |
5009 | struct flow old_base_flow = ctx->base_flow; | |
456024cb | 5010 | compose_clone_action_using_sample(ctx, oc); |
889ee380 AZ |
5011 | ctx->base_flow = old_base_flow; |
5012 | } else { | |
5013 | do_xlate_actions(oc->actions, ofpact_nest_get_action_len(oc), ctx); | |
bef503e8 | 5014 | } |
ba653d2a | 5015 | |
b827b231 BP |
5016 | ofpbuf_uninit(&ctx->action_set); |
5017 | ctx->action_set = old_action_set; | |
5018 | ||
5019 | ofpbuf_uninit(&ctx->stack); | |
5020 | ctx->stack = old_stack; | |
5021 | ||
7ae62a67 | 5022 | ctx->xin->flow = old_flow; |
ba653d2a BP |
5023 | |
5024 | /* The clone's conntrack execution should have no effect on the original | |
5025 | * packet. */ | |
5026 | ctx->conntracked = old_conntracked; | |
bd3c2df3 BP |
5027 | |
5028 | /* Popping MPLS from the clone should have no effect on the original | |
5029 | * packet. */ | |
5030 | ctx->was_mpls = old_was_mpls; | |
7ae62a67 WT |
5031 | } |
5032 | ||
076caa2f JR |
5033 | static void |
5034 | xlate_meter_action(struct xlate_ctx *ctx, const struct ofpact_meter *meter) | |
5035 | { | |
5036 | if (meter->provider_meter_id != UINT32_MAX) { | |
5037 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_METER, | |
5038 | meter->provider_meter_id); | |
5039 | } | |
5040 | } | |
5041 | ||
9583bc14 | 5042 | static bool |
46c88433 | 5043 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 5044 | { |
bbbca389 | 5045 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
5046 | ? OFPUTIL_PC_NO_RECV_STP |
5047 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
5048 | return false; |
5049 | } | |
5050 | ||
5051 | /* Only drop packets here if both forwarding and learning are | |
5052 | * disabled. If just learning is enabled, we need to have | |
5053 | * OFPP_NORMAL and the learning action have a look at the packet | |
5054 | * before we can drop it. */ | |
9efd308e DV |
5055 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
5056 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
5057 | return false; |
5058 | } | |
5059 | ||
5060 | return true; | |
5061 | } | |
5062 | ||
7fdb60a7 | 5063 | static void |
7e7e8dbb BP |
5064 | xlate_write_actions__(struct xlate_ctx *ctx, |
5065 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
7fdb60a7 | 5066 | { |
c61f3870 BP |
5067 | /* Maintain actset_output depending on the contents of the action set: |
5068 | * | |
5069 | * - OFPP_UNSET, if there is no "output" action. | |
5070 | * | |
5071 | * - The output port, if there is an "output" action and no "group" | |
5072 | * action. | |
5073 | * | |
5074 | * - OFPP_UNSET, if there is a "group" action. | |
5075 | */ | |
5076 | if (!ctx->action_set_has_group) { | |
7e7e8dbb BP |
5077 | const struct ofpact *a; |
5078 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
5079 | if (a->type == OFPACT_OUTPUT) { | |
5080 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(a)->port; | |
5081 | } else if (a->type == OFPACT_GROUP) { | |
c61f3870 BP |
5082 | ctx->xin->flow.actset_output = OFPP_UNSET; |
5083 | ctx->action_set_has_group = true; | |
9055ca9a | 5084 | break; |
c61f3870 BP |
5085 | } |
5086 | } | |
5087 | } | |
5088 | ||
7e7e8dbb BP |
5089 | ofpbuf_put(&ctx->action_set, ofpacts, ofpacts_len); |
5090 | } | |
5091 | ||
5092 | static void | |
5093 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact_nest *a) | |
5094 | { | |
5095 | xlate_write_actions__(ctx, a->actions, ofpact_nest_get_action_len(a)); | |
7fdb60a7 SH |
5096 | } |
5097 | ||
5098 | static void | |
5099 | xlate_action_set(struct xlate_ctx *ctx) | |
5100 | { | |
2d9b49dd BP |
5101 | uint64_t action_list_stub[1024 / 8]; |
5102 | struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub); | |
7fdb60a7 | 5103 | ofpacts_execute_action_set(&action_list, &ctx->action_set); |
ed9c9e3e JR |
5104 | /* Clear the action set, as it is not needed any more. */ |
5105 | ofpbuf_clear(&ctx->action_set); | |
2d9b49dd BP |
5106 | if (action_list.size) { |
5107 | ctx->in_action_set = true; | |
5108 | ||
5109 | struct ovs_list *old_trace = ctx->xin->trace; | |
5110 | ctx->xin->trace = xlate_report(ctx, OFT_TABLE, | |
5111 | "--. Executing action set:"); | |
5112 | do_xlate_actions(action_list.data, action_list.size, ctx); | |
5113 | ctx->xin->trace = old_trace; | |
5114 | ||
5115 | ctx->in_action_set = false; | |
5116 | } | |
7fdb60a7 SH |
5117 | ofpbuf_uninit(&action_list); |
5118 | } | |
5119 | ||
e672ff9b | 5120 | static void |
1d361a81 | 5121 | freeze_put_unroll_xlate(struct xlate_ctx *ctx) |
e672ff9b | 5122 | { |
1d361a81 | 5123 | struct ofpact_unroll_xlate *unroll = ctx->frozen_actions.header; |
e672ff9b JR |
5124 | |
5125 | /* Restore the table_id and rule cookie for a potential PACKET | |
5126 | * IN if needed. */ | |
5127 | if (!unroll || | |
5128 | (ctx->table_id != unroll->rule_table_id | |
5129 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
1d361a81 | 5130 | unroll = ofpact_put_UNROLL_XLATE(&ctx->frozen_actions); |
e672ff9b JR |
5131 | unroll->rule_table_id = ctx->table_id; |
5132 | unroll->rule_cookie = ctx->rule_cookie; | |
1d361a81 | 5133 | ctx->frozen_actions.header = unroll; |
e672ff9b JR |
5134 | } |
5135 | } | |
5136 | ||
5137 | ||
1d361a81 BP |
5138 | /* Copy actions 'a' through 'end' to ctx->frozen_actions, which will be |
5139 | * executed after thawing. Inserts an UNROLL_XLATE action, if none is already | |
5140 | * present, before any action that may depend on the current table ID or flow | |
5141 | * cookie. */ | |
e672ff9b | 5142 | static void |
1d361a81 | 5143 | freeze_unroll_actions(const struct ofpact *a, const struct ofpact *end, |
e672ff9b JR |
5144 | struct xlate_ctx *ctx) |
5145 | { | |
c2b283b7 | 5146 | for (; a < end; a = ofpact_next(a)) { |
e672ff9b | 5147 | switch (a->type) { |
e672ff9b | 5148 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 5149 | case OFPACT_OUTPUT_TRUNC: |
e672ff9b JR |
5150 | case OFPACT_GROUP: |
5151 | case OFPACT_OUTPUT: | |
5152 | case OFPACT_CONTROLLER: | |
5153 | case OFPACT_DEC_MPLS_TTL: | |
5154 | case OFPACT_DEC_TTL: | |
83a31283 BP |
5155 | /* These actions may generate asynchronous messages, which include |
5156 | * table ID and flow cookie information. */ | |
1d361a81 | 5157 | freeze_put_unroll_xlate(ctx); |
e672ff9b JR |
5158 | break; |
5159 | ||
83a31283 BP |
5160 | case OFPACT_RESUBMIT: |
5161 | if (ofpact_get_RESUBMIT(a)->table_id == 0xff) { | |
5162 | /* This resubmit action is relative to the current table, so we | |
5163 | * need to track what table that is.*/ | |
1d361a81 | 5164 | freeze_put_unroll_xlate(ctx); |
83a31283 BP |
5165 | } |
5166 | break; | |
5167 | ||
e672ff9b JR |
5168 | case OFPACT_SET_TUNNEL: |
5169 | case OFPACT_REG_MOVE: | |
5170 | case OFPACT_SET_FIELD: | |
5171 | case OFPACT_STACK_PUSH: | |
5172 | case OFPACT_STACK_POP: | |
5173 | case OFPACT_LEARN: | |
5174 | case OFPACT_WRITE_METADATA: | |
83a31283 | 5175 | case OFPACT_GOTO_TABLE: |
e672ff9b JR |
5176 | case OFPACT_ENQUEUE: |
5177 | case OFPACT_SET_VLAN_VID: | |
5178 | case OFPACT_SET_VLAN_PCP: | |
5179 | case OFPACT_STRIP_VLAN: | |
5180 | case OFPACT_PUSH_VLAN: | |
5181 | case OFPACT_SET_ETH_SRC: | |
5182 | case OFPACT_SET_ETH_DST: | |
5183 | case OFPACT_SET_IPV4_SRC: | |
5184 | case OFPACT_SET_IPV4_DST: | |
5185 | case OFPACT_SET_IP_DSCP: | |
5186 | case OFPACT_SET_IP_ECN: | |
5187 | case OFPACT_SET_IP_TTL: | |
5188 | case OFPACT_SET_L4_SRC_PORT: | |
5189 | case OFPACT_SET_L4_DST_PORT: | |
5190 | case OFPACT_SET_QUEUE: | |
5191 | case OFPACT_POP_QUEUE: | |
5192 | case OFPACT_PUSH_MPLS: | |
5193 | case OFPACT_POP_MPLS: | |
5194 | case OFPACT_SET_MPLS_LABEL: | |
5195 | case OFPACT_SET_MPLS_TC: | |
5196 | case OFPACT_SET_MPLS_TTL: | |
5197 | case OFPACT_MULTIPATH: | |
5198 | case OFPACT_BUNDLE: | |
5199 | case OFPACT_EXIT: | |
5200 | case OFPACT_UNROLL_XLATE: | |
5201 | case OFPACT_FIN_TIMEOUT: | |
5202 | case OFPACT_CLEAR_ACTIONS: | |
5203 | case OFPACT_WRITE_ACTIONS: | |
5204 | case OFPACT_METER: | |
5205 | case OFPACT_SAMPLE: | |
7ae62a67 | 5206 | case OFPACT_CLONE: |
d4abaff5 | 5207 | case OFPACT_DEBUG_RECIRC: |
07659514 | 5208 | case OFPACT_CT: |
72fe7578 | 5209 | case OFPACT_CT_CLEAR: |
9ac0aada | 5210 | case OFPACT_NAT: |
83a31283 | 5211 | /* These may not generate PACKET INs. */ |
e672ff9b JR |
5212 | break; |
5213 | ||
e672ff9b JR |
5214 | case OFPACT_NOTE: |
5215 | case OFPACT_CONJUNCTION: | |
83a31283 | 5216 | /* These need not be copied for restoration. */ |
e672ff9b JR |
5217 | continue; |
5218 | } | |
5219 | /* Copy the action over. */ | |
1d361a81 | 5220 | ofpbuf_put(&ctx->frozen_actions, a, OFPACT_ALIGN(a->len)); |
e672ff9b JR |
5221 | } |
5222 | } | |
5223 | ||
8e53fe8c | 5224 | static void |
f2d105b5 JS |
5225 | put_ct_mark(const struct flow *flow, struct ofpbuf *odp_actions, |
5226 | struct flow_wildcards *wc) | |
8e53fe8c | 5227 | { |
2a754f4a JS |
5228 | if (wc->masks.ct_mark) { |
5229 | struct { | |
5230 | uint32_t key; | |
5231 | uint32_t mask; | |
5232 | } *odp_ct_mark; | |
5233 | ||
5234 | odp_ct_mark = nl_msg_put_unspec_uninit(odp_actions, OVS_CT_ATTR_MARK, | |
5235 | sizeof(*odp_ct_mark)); | |
5236 | odp_ct_mark->key = flow->ct_mark & wc->masks.ct_mark; | |
5237 | odp_ct_mark->mask = wc->masks.ct_mark; | |
8e53fe8c JS |
5238 | } |
5239 | } | |
5240 | ||
9daf2348 | 5241 | static void |
f2d105b5 JS |
5242 | put_ct_label(const struct flow *flow, struct ofpbuf *odp_actions, |
5243 | struct flow_wildcards *wc) | |
9daf2348 | 5244 | { |
2ff8484b | 5245 | if (!ovs_u128_is_zero(wc->masks.ct_label)) { |
9daf2348 JS |
5246 | struct { |
5247 | ovs_u128 key; | |
5248 | ovs_u128 mask; | |
5249 | } *odp_ct_label; | |
5250 | ||
5251 | odp_ct_label = nl_msg_put_unspec_uninit(odp_actions, | |
5252 | OVS_CT_ATTR_LABELS, | |
5253 | sizeof(*odp_ct_label)); | |
f2d105b5 | 5254 | odp_ct_label->key = ovs_u128_and(flow->ct_label, wc->masks.ct_label); |
9daf2348 JS |
5255 | odp_ct_label->mask = wc->masks.ct_label; |
5256 | } | |
5257 | } | |
5258 | ||
d787ad39 | 5259 | static void |
2d9b49dd BP |
5260 | put_ct_helper(struct xlate_ctx *ctx, |
5261 | struct ofpbuf *odp_actions, struct ofpact_conntrack *ofc) | |
d787ad39 JS |
5262 | { |
5263 | if (ofc->alg) { | |
40c7b2fc JS |
5264 | switch(ofc->alg) { |
5265 | case IPPORT_FTP: | |
d787ad39 | 5266 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "ftp"); |
40c7b2fc JS |
5267 | break; |
5268 | case IPPORT_TFTP: | |
5269 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "tftp"); | |
5270 | break; | |
5271 | default: | |
2d9b49dd | 5272 | xlate_report_error(ctx, "cannot serialize ct_helper %d", ofc->alg); |
40c7b2fc | 5273 | break; |
d787ad39 JS |
5274 | } |
5275 | } | |
5276 | } | |
5277 | ||
9ac0aada JR |
5278 | static void |
5279 | put_ct_nat(struct xlate_ctx *ctx) | |
5280 | { | |
5281 | struct ofpact_nat *ofn = ctx->ct_nat_action; | |
5282 | size_t nat_offset; | |
5283 | ||
5284 | if (!ofn) { | |
5285 | return; | |
5286 | } | |
5287 | ||
5288 | nat_offset = nl_msg_start_nested(ctx->odp_actions, OVS_CT_ATTR_NAT); | |
5289 | if (ofn->flags & NX_NAT_F_SRC || ofn->flags & NX_NAT_F_DST) { | |
5290 | nl_msg_put_flag(ctx->odp_actions, ofn->flags & NX_NAT_F_SRC | |
5291 | ? OVS_NAT_ATTR_SRC : OVS_NAT_ATTR_DST); | |
5292 | if (ofn->flags & NX_NAT_F_PERSISTENT) { | |
5293 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PERSISTENT); | |
5294 | } | |
5295 | if (ofn->flags & NX_NAT_F_PROTO_HASH) { | |
5296 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_HASH); | |
5297 | } else if (ofn->flags & NX_NAT_F_PROTO_RANDOM) { | |
5298 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_RANDOM); | |
5299 | } | |
5300 | if (ofn->range_af == AF_INET) { | |
73e8bc23 | 5301 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, |
9ac0aada JR |
5302 | ofn->range.addr.ipv4.min); |
5303 | if (ofn->range.addr.ipv4.max && | |
73e8bc23 BP |
5304 | (ntohl(ofn->range.addr.ipv4.max) |
5305 | > ntohl(ofn->range.addr.ipv4.min))) { | |
5306 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
5307 | ofn->range.addr.ipv4.max); | |
9ac0aada JR |
5308 | } |
5309 | } else if (ofn->range_af == AF_INET6) { | |
5310 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, | |
5311 | &ofn->range.addr.ipv6.min, | |
5312 | sizeof ofn->range.addr.ipv6.min); | |
5313 | if (!ipv6_mask_is_any(&ofn->range.addr.ipv6.max) && | |
5314 | memcmp(&ofn->range.addr.ipv6.max, &ofn->range.addr.ipv6.min, | |
5315 | sizeof ofn->range.addr.ipv6.max) > 0) { | |
5316 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
5317 | &ofn->range.addr.ipv6.max, | |
5318 | sizeof ofn->range.addr.ipv6.max); | |
5319 | } | |
5320 | } | |
5321 | if (ofn->range_af != AF_UNSPEC && ofn->range.proto.min) { | |
5322 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MIN, | |
5323 | ofn->range.proto.min); | |
5324 | if (ofn->range.proto.max && | |
5325 | ofn->range.proto.max > ofn->range.proto.min) { | |
5326 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MAX, | |
5327 | ofn->range.proto.max); | |
5328 | } | |
5329 | } | |
5330 | } | |
5331 | nl_msg_end_nested(ctx->odp_actions, nat_offset); | |
5332 | } | |
5333 | ||
07659514 JS |
5334 | static void |
5335 | compose_conntrack_action(struct xlate_ctx *ctx, struct ofpact_conntrack *ofc) | |
5336 | { | |
9daf2348 | 5337 | ovs_u128 old_ct_label = ctx->base_flow.ct_label; |
f2d105b5 | 5338 | ovs_u128 old_ct_label_mask = ctx->wc->masks.ct_label; |
8e53fe8c | 5339 | uint32_t old_ct_mark = ctx->base_flow.ct_mark; |
f2d105b5 | 5340 | uint32_t old_ct_mark_mask = ctx->wc->masks.ct_mark; |
07659514 JS |
5341 | size_t ct_offset; |
5342 | uint16_t zone; | |
5343 | ||
5344 | /* Ensure that any prior actions are applied before composing the new | |
5345 | * conntrack action. */ | |
5346 | xlate_commit_actions(ctx); | |
5347 | ||
8e53fe8c | 5348 | /* Process nested actions first, to populate the key. */ |
9ac0aada | 5349 | ctx->ct_nat_action = NULL; |
f2d105b5 JS |
5350 | ctx->wc->masks.ct_mark = 0; |
5351 | ctx->wc->masks.ct_label.u64.hi = ctx->wc->masks.ct_label.u64.lo = 0; | |
8e53fe8c JS |
5352 | do_xlate_actions(ofc->actions, ofpact_ct_get_action_len(ofc), ctx); |
5353 | ||
07659514 JS |
5354 | if (ofc->zone_src.field) { |
5355 | zone = mf_get_subfield(&ofc->zone_src, &ctx->xin->flow); | |
5356 | } else { | |
5357 | zone = ofc->zone_imm; | |
5358 | } | |
5359 | ||
5360 | ct_offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_CT); | |
5361 | if (ofc->flags & NX_CT_F_COMMIT) { | |
a76a37ef JR |
5362 | nl_msg_put_flag(ctx->odp_actions, ofc->flags & NX_CT_F_FORCE ? |
5363 | OVS_CT_ATTR_FORCE_COMMIT : OVS_CT_ATTR_COMMIT); | |
adfe7a0b JR |
5364 | if (ctx->xbridge->support.ct_eventmask) { |
5365 | nl_msg_put_u32(ctx->odp_actions, OVS_CT_ATTR_EVENTMASK, | |
975954af | 5366 | OVS_CT_EVENTMASK_DEFAULT); |
adfe7a0b | 5367 | } |
07659514 JS |
5368 | } |
5369 | nl_msg_put_u16(ctx->odp_actions, OVS_CT_ATTR_ZONE, zone); | |
f2d105b5 JS |
5370 | put_ct_mark(&ctx->xin->flow, ctx->odp_actions, ctx->wc); |
5371 | put_ct_label(&ctx->xin->flow, ctx->odp_actions, ctx->wc); | |
2d9b49dd | 5372 | put_ct_helper(ctx, ctx->odp_actions, ofc); |
9ac0aada JR |
5373 | put_ct_nat(ctx); |
5374 | ctx->ct_nat_action = NULL; | |
07659514 JS |
5375 | nl_msg_end_nested(ctx->odp_actions, ct_offset); |
5376 | ||
8e53fe8c JS |
5377 | /* Restore the original ct fields in the key. These should only be exposed |
5378 | * after recirculation to another table. */ | |
5379 | ctx->base_flow.ct_mark = old_ct_mark; | |
f2d105b5 | 5380 | ctx->wc->masks.ct_mark = old_ct_mark_mask; |
9daf2348 | 5381 | ctx->base_flow.ct_label = old_ct_label; |
f2d105b5 | 5382 | ctx->wc->masks.ct_label = old_ct_label_mask; |
8e53fe8c | 5383 | |
07659514 JS |
5384 | if (ofc->recirc_table == NX_CT_RECIRC_NONE) { |
5385 | /* If we do not recirculate as part of this action, hide the results of | |
5386 | * connection tracking from subsequent recirculations. */ | |
5387 | ctx->conntracked = false; | |
5388 | } else { | |
5389 | /* Use ct_* fields from datapath during recirculation upcall. */ | |
5390 | ctx->conntracked = true; | |
e37b8437 | 5391 | compose_recirculate_and_fork(ctx, ofc->recirc_table); |
07659514 JS |
5392 | } |
5393 | } | |
5394 | ||
e12ec36b SH |
5395 | static void |
5396 | recirc_for_mpls(const struct ofpact *a, struct xlate_ctx *ctx) | |
5397 | { | |
5398 | /* No need to recirculate if already exiting. */ | |
5399 | if (ctx->exit) { | |
5400 | return; | |
5401 | } | |
5402 | ||
5403 | /* Do not consider recirculating unless the packet was previously MPLS. */ | |
5404 | if (!ctx->was_mpls) { | |
5405 | return; | |
5406 | } | |
5407 | ||
5408 | /* Special case these actions, only recirculating if necessary. | |
5409 | * This avoids the overhead of recirculation in common use-cases. | |
5410 | */ | |
5411 | switch (a->type) { | |
5412 | ||
5413 | /* Output actions do not require recirculation. */ | |
5414 | case OFPACT_OUTPUT: | |
aaca4fe0 | 5415 | case OFPACT_OUTPUT_TRUNC: |
e12ec36b SH |
5416 | case OFPACT_ENQUEUE: |
5417 | case OFPACT_OUTPUT_REG: | |
5418 | /* Set actions that don't touch L3+ fields do not require recirculation. */ | |
5419 | case OFPACT_SET_VLAN_VID: | |
5420 | case OFPACT_SET_VLAN_PCP: | |
5421 | case OFPACT_SET_ETH_SRC: | |
5422 | case OFPACT_SET_ETH_DST: | |
5423 | case OFPACT_SET_TUNNEL: | |
5424 | case OFPACT_SET_QUEUE: | |
5425 | /* If actions of a group require recirculation that can be detected | |
5426 | * when translating them. */ | |
5427 | case OFPACT_GROUP: | |
5428 | return; | |
5429 | ||
5430 | /* Set field that don't touch L3+ fields don't require recirculation. */ | |
5431 | case OFPACT_SET_FIELD: | |
5432 | if (mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)) { | |
5433 | break; | |
5434 | } | |
5435 | return; | |
5436 | ||
5437 | /* For simplicity, recirculate in all other cases. */ | |
5438 | case OFPACT_CONTROLLER: | |
5439 | case OFPACT_BUNDLE: | |
5440 | case OFPACT_STRIP_VLAN: | |
5441 | case OFPACT_PUSH_VLAN: | |
5442 | case OFPACT_SET_IPV4_SRC: | |
5443 | case OFPACT_SET_IPV4_DST: | |
5444 | case OFPACT_SET_IP_DSCP: | |
5445 | case OFPACT_SET_IP_ECN: | |
5446 | case OFPACT_SET_IP_TTL: | |
5447 | case OFPACT_SET_L4_SRC_PORT: | |
5448 | case OFPACT_SET_L4_DST_PORT: | |
5449 | case OFPACT_REG_MOVE: | |
5450 | case OFPACT_STACK_PUSH: | |
5451 | case OFPACT_STACK_POP: | |
5452 | case OFPACT_DEC_TTL: | |
5453 | case OFPACT_SET_MPLS_LABEL: | |
5454 | case OFPACT_SET_MPLS_TC: | |
5455 | case OFPACT_SET_MPLS_TTL: | |
5456 | case OFPACT_DEC_MPLS_TTL: | |
5457 | case OFPACT_PUSH_MPLS: | |
5458 | case OFPACT_POP_MPLS: | |
5459 | case OFPACT_POP_QUEUE: | |
5460 | case OFPACT_FIN_TIMEOUT: | |
5461 | case OFPACT_RESUBMIT: | |
5462 | case OFPACT_LEARN: | |
5463 | case OFPACT_CONJUNCTION: | |
5464 | case OFPACT_MULTIPATH: | |
5465 | case OFPACT_NOTE: | |
5466 | case OFPACT_EXIT: | |
5467 | case OFPACT_SAMPLE: | |
7ae62a67 | 5468 | case OFPACT_CLONE: |
e12ec36b SH |
5469 | case OFPACT_UNROLL_XLATE: |
5470 | case OFPACT_CT: | |
72fe7578 | 5471 | case OFPACT_CT_CLEAR: |
e12ec36b SH |
5472 | case OFPACT_NAT: |
5473 | case OFPACT_DEBUG_RECIRC: | |
5474 | case OFPACT_METER: | |
5475 | case OFPACT_CLEAR_ACTIONS: | |
5476 | case OFPACT_WRITE_ACTIONS: | |
5477 | case OFPACT_WRITE_METADATA: | |
5478 | case OFPACT_GOTO_TABLE: | |
5479 | default: | |
5480 | break; | |
5481 | } | |
5482 | ||
5483 | /* Recirculate */ | |
5484 | ctx_trigger_freeze(ctx); | |
5485 | } | |
5486 | ||
2d9b49dd BP |
5487 | static void |
5488 | xlate_ofpact_reg_move(struct xlate_ctx *ctx, const struct ofpact_reg_move *a) | |
5489 | { | |
5490 | mf_subfield_copy(&a->src, &a->dst, &ctx->xin->flow, ctx->wc); | |
5491 | xlate_report_subfield(ctx, &a->dst); | |
5492 | } | |
5493 | ||
5494 | static void | |
5495 | xlate_ofpact_stack_pop(struct xlate_ctx *ctx, const struct ofpact_stack *a) | |
5496 | { | |
5497 | if (nxm_execute_stack_pop(a, &ctx->xin->flow, ctx->wc, &ctx->stack)) { | |
5498 | xlate_report_subfield(ctx, &a->subfield); | |
5499 | } else { | |
5500 | xlate_report_error(ctx, "stack underflow"); | |
5501 | } | |
5502 | } | |
5503 | ||
5504 | /* Restore translation context data that was stored earlier. */ | |
5505 | static void | |
5506 | xlate_ofpact_unroll_xlate(struct xlate_ctx *ctx, | |
5507 | const struct ofpact_unroll_xlate *a) | |
5508 | { | |
5509 | ctx->table_id = a->rule_table_id; | |
5510 | ctx->rule_cookie = a->rule_cookie; | |
5511 | xlate_report(ctx, OFT_THAW, "restored state: table=%"PRIu8", " | |
5512 | "cookie=%#"PRIx64, a->rule_table_id, a->rule_cookie); | |
5513 | } | |
5514 | ||
9583bc14 EJ |
5515 | static void |
5516 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
5517 | struct xlate_ctx *ctx) | |
5518 | { | |
49a73e0c | 5519 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 5520 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
5521 | const struct ofpact *a; |
5522 | ||
a36de779 | 5523 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
53902038 | 5524 | tnl_neigh_snoop(flow, wc, ctx->xbridge->name); |
a36de779 | 5525 | } |
f47ea021 JR |
5526 | /* dl_type already in the mask, not set below. */ |
5527 | ||
2d9b49dd BP |
5528 | if (!ofpacts_len) { |
5529 | xlate_report(ctx, OFT_ACTION, "drop"); | |
5530 | return; | |
5531 | } | |
5532 | ||
9583bc14 EJ |
5533 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
5534 | struct ofpact_controller *controller; | |
5535 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
5536 | const struct ofpact_set_field *set_field; |
5537 | const struct mf_field *mf; | |
9583bc14 | 5538 | |
fff1b9c0 JR |
5539 | if (ctx->error) { |
5540 | break; | |
5541 | } | |
5542 | ||
e12ec36b SH |
5543 | recirc_for_mpls(a, ctx); |
5544 | ||
e672ff9b JR |
5545 | if (ctx->exit) { |
5546 | /* Check if need to store the remaining actions for later | |
5547 | * execution. */ | |
1d361a81 BP |
5548 | if (ctx->freezing) { |
5549 | freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), | |
e672ff9b JR |
5550 | ctx); |
5551 | } | |
5552 | break; | |
7bbdd84f SH |
5553 | } |
5554 | ||
2d9b49dd BP |
5555 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
5556 | struct ds s = DS_EMPTY_INITIALIZER; | |
5557 | ofpacts_format(a, OFPACT_ALIGN(a->len), &s); | |
5558 | xlate_report(ctx, OFT_ACTION, "%s", ds_cstr(&s)); | |
5559 | ds_destroy(&s); | |
5560 | } | |
5561 | ||
9583bc14 EJ |
5562 | switch (a->type) { |
5563 | case OFPACT_OUTPUT: | |
5564 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
5565 | ofpact_get_OUTPUT(a)->max_len, true); | |
5566 | break; | |
5567 | ||
7395c052 | 5568 | case OFPACT_GROUP: |
f4fb341b | 5569 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 5570 | /* Group could not be found. */ |
db88b35c JR |
5571 | |
5572 | /* XXX: Terminates action list translation, but does not | |
5573 | * terminate the pipeline. */ | |
f4fb341b SH |
5574 | return; |
5575 | } | |
7395c052 NZ |
5576 | break; |
5577 | ||
9583bc14 EJ |
5578 | case OFPACT_CONTROLLER: |
5579 | controller = ofpact_get_CONTROLLER(a); | |
77ab5fd2 BP |
5580 | if (controller->pause) { |
5581 | ctx->pause = controller; | |
5582 | ctx->xout->slow |= SLOW_CONTROLLER; | |
5583 | ctx_trigger_freeze(ctx); | |
5584 | a = ofpact_next(a); | |
5585 | } else { | |
5586 | execute_controller_action(ctx, controller->max_len, | |
5587 | controller->reason, | |
5588 | controller->controller_id, | |
5589 | controller->userdata, | |
5590 | controller->userdata_len); | |
5591 | } | |
9583bc14 EJ |
5592 | break; |
5593 | ||
5594 | case OFPACT_ENQUEUE: | |
16194afd DDP |
5595 | memset(&wc->masks.skb_priority, 0xff, |
5596 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
5597 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
5598 | break; | |
5599 | ||
5600 | case OFPACT_SET_VLAN_VID: | |
f0fb825a EG |
5601 | wc->masks.vlans[0].tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
5602 | if (flow->vlans[0].tci & htons(VLAN_CFI) || | |
ca287d20 | 5603 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { |
f0fb825a EG |
5604 | if (!flow->vlans[0].tpid) { |
5605 | flow->vlans[0].tpid = htons(ETH_TYPE_VLAN); | |
5606 | } | |
5607 | flow->vlans[0].tci &= ~htons(VLAN_VID_MASK); | |
5608 | flow->vlans[0].tci |= | |
5609 | (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | | |
5610 | htons(VLAN_CFI)); | |
ca287d20 | 5611 | } |
9583bc14 EJ |
5612 | break; |
5613 | ||
5614 | case OFPACT_SET_VLAN_PCP: | |
f0fb825a EG |
5615 | wc->masks.vlans[0].tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
5616 | if (flow->vlans[0].tci & htons(VLAN_CFI) || | |
ca287d20 | 5617 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { |
f0fb825a EG |
5618 | if (!flow->vlans[0].tpid) { |
5619 | flow->vlans[0].tpid = htons(ETH_TYPE_VLAN); | |
5620 | } | |
5621 | flow->vlans[0].tci &= ~htons(VLAN_PCP_MASK); | |
5622 | flow->vlans[0].tci |= | |
5623 | htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
5624 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
ca287d20 | 5625 | } |
9583bc14 EJ |
5626 | break; |
5627 | ||
5628 | case OFPACT_STRIP_VLAN: | |
f0fb825a | 5629 | flow_pop_vlan(flow, wc); |
9583bc14 EJ |
5630 | break; |
5631 | ||
5632 | case OFPACT_PUSH_VLAN: | |
f0fb825a EG |
5633 | flow_push_vlan_uninit(flow, wc); |
5634 | flow->vlans[0].tpid = ofpact_get_PUSH_VLAN(a)->ethertype; | |
5635 | flow->vlans[0].tci = htons(VLAN_CFI); | |
9583bc14 EJ |
5636 | break; |
5637 | ||
5638 | case OFPACT_SET_ETH_SRC: | |
74ff3298 JR |
5639 | WC_MASK_FIELD(wc, dl_src); |
5640 | flow->dl_src = ofpact_get_SET_ETH_SRC(a)->mac; | |
9583bc14 EJ |
5641 | break; |
5642 | ||
5643 | case OFPACT_SET_ETH_DST: | |
74ff3298 JR |
5644 | WC_MASK_FIELD(wc, dl_dst); |
5645 | flow->dl_dst = ofpact_get_SET_ETH_DST(a)->mac; | |
9583bc14 EJ |
5646 | break; |
5647 | ||
5648 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 5649 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 5650 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 5651 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
5652 | } |
5653 | break; | |
5654 | ||
5655 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 5656 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 5657 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 5658 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
5659 | } |
5660 | break; | |
5661 | ||
04f01c24 BP |
5662 | case OFPACT_SET_IP_DSCP: |
5663 | if (is_ip_any(flow)) { | |
f47ea021 | 5664 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 5665 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 5666 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
5667 | } |
5668 | break; | |
5669 | ||
ff14eb7a JR |
5670 | case OFPACT_SET_IP_ECN: |
5671 | if (is_ip_any(flow)) { | |
5672 | wc->masks.nw_tos |= IP_ECN_MASK; | |
5673 | flow->nw_tos &= ~IP_ECN_MASK; | |
5674 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
5675 | } | |
5676 | break; | |
5677 | ||
0c20dbe4 JR |
5678 | case OFPACT_SET_IP_TTL: |
5679 | if (is_ip_any(flow)) { | |
5680 | wc->masks.nw_ttl = 0xff; | |
5681 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
5682 | } | |
5683 | break; | |
5684 | ||
9583bc14 | 5685 | case OFPACT_SET_L4_SRC_PORT: |
b8778a0d | 5686 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
5687 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
5688 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 5689 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
5690 | } |
5691 | break; | |
5692 | ||
5693 | case OFPACT_SET_L4_DST_PORT: | |
b8778a0d | 5694 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
5695 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
5696 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 5697 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
5698 | } |
5699 | break; | |
5700 | ||
5701 | case OFPACT_RESUBMIT: | |
8bf009bf JR |
5702 | /* Freezing complicates resubmit. Some action in the flow |
5703 | * entry found by resubmit might trigger freezing. If that | |
5704 | * happens, then we do not want to execute the resubmit again after | |
5705 | * during thawing, so we want to skip back to the head of the loop | |
5706 | * to avoid that, only adding any actions that follow the resubmit | |
5707 | * to the frozen actions. | |
6b1c5734 | 5708 | */ |
9583bc14 | 5709 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); |
6b1c5734 | 5710 | continue; |
9583bc14 EJ |
5711 | |
5712 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 5713 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
5714 | break; |
5715 | ||
5716 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
5717 | memset(&wc->masks.skb_priority, 0xff, |
5718 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
5719 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
5720 | break; | |
5721 | ||
5722 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
5723 | memset(&wc->masks.skb_priority, 0xff, |
5724 | sizeof wc->masks.skb_priority); | |
2d9b49dd BP |
5725 | if (flow->skb_priority != ctx->orig_skb_priority) { |
5726 | flow->skb_priority = ctx->orig_skb_priority; | |
5727 | xlate_report(ctx, OFT_DETAIL, "queue = %#"PRIx32, | |
5728 | flow->skb_priority); | |
5729 | } | |
9583bc14 EJ |
5730 | break; |
5731 | ||
5732 | case OFPACT_REG_MOVE: | |
2d9b49dd | 5733 | xlate_ofpact_reg_move(ctx, ofpact_get_REG_MOVE(a)); |
9583bc14 EJ |
5734 | break; |
5735 | ||
b2dd70be JR |
5736 | case OFPACT_SET_FIELD: |
5737 | set_field = ofpact_get_SET_FIELD(a); | |
5738 | mf = set_field->field; | |
b2dd70be | 5739 | |
aff49b8c JR |
5740 | /* Set the field only if the packet actually has it. */ |
5741 | if (mf_are_prereqs_ok(mf, flow, wc)) { | |
128684a6 JR |
5742 | mf_mask_field_masked(mf, ofpact_set_field_mask(set_field), wc); |
5743 | mf_set_flow_value_masked(mf, set_field->value, | |
5744 | ofpact_set_field_mask(set_field), | |
5745 | flow); | |
2d9b49dd BP |
5746 | } else { |
5747 | xlate_report(ctx, OFT_WARN, | |
5748 | "unmet prerequisites for %s, set_field ignored", | |
5749 | mf->name); | |
5750 | ||
b8778a0d | 5751 | } |
b2dd70be JR |
5752 | break; |
5753 | ||
9583bc14 | 5754 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
5755 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
5756 | &ctx->stack); | |
9583bc14 EJ |
5757 | break; |
5758 | ||
5759 | case OFPACT_STACK_POP: | |
2d9b49dd | 5760 | xlate_ofpact_stack_pop(ctx, ofpact_get_STACK_POP(a)); |
9583bc14 EJ |
5761 | break; |
5762 | ||
5763 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 5764 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
5765 | break; |
5766 | ||
5767 | case OFPACT_POP_MPLS: | |
8bfd0fda | 5768 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
5769 | break; |
5770 | ||
097d4939 | 5771 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
5772 | compose_set_mpls_label_action( |
5773 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 5774 | break; |
097d4939 JR |
5775 | |
5776 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 5777 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
5778 | break; |
5779 | ||
9583bc14 | 5780 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 5781 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
5782 | break; |
5783 | ||
5784 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 5785 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 5786 | return; |
9583bc14 EJ |
5787 | } |
5788 | break; | |
5789 | ||
5790 | case OFPACT_DEC_TTL: | |
f74e7df7 | 5791 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 5792 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 5793 | return; |
9583bc14 EJ |
5794 | } |
5795 | break; | |
5796 | ||
5797 | case OFPACT_NOTE: | |
5798 | /* Nothing to do. */ | |
5799 | break; | |
5800 | ||
5801 | case OFPACT_MULTIPATH: | |
33bf9176 | 5802 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
2d9b49dd | 5803 | xlate_report_subfield(ctx, &ofpact_get_MULTIPATH(a)->dst); |
9583bc14 EJ |
5804 | break; |
5805 | ||
5806 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
5807 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
5808 | break; | |
5809 | ||
5810 | case OFPACT_OUTPUT_REG: | |
5811 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
5812 | break; | |
5813 | ||
aaca4fe0 WT |
5814 | case OFPACT_OUTPUT_TRUNC: |
5815 | xlate_output_trunc_action(ctx, ofpact_get_OUTPUT_TRUNC(a)->port, | |
5816 | ofpact_get_OUTPUT_TRUNC(a)->max_len); | |
5817 | break; | |
5818 | ||
9583bc14 EJ |
5819 | case OFPACT_LEARN: |
5820 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
5821 | break; | |
5822 | ||
2d9b49dd | 5823 | case OFPACT_CONJUNCTION: |
afc3987b BP |
5824 | /* A flow with a "conjunction" action represents part of a special |
5825 | * kind of "set membership match". Such a flow should not actually | |
5826 | * get executed, but it could via, say, a "packet-out", even though | |
5827 | * that wouldn't be useful. Log it to help debugging. */ | |
2d9b49dd | 5828 | xlate_report_error(ctx, "executing no-op conjunction action"); |
18080541 BP |
5829 | break; |
5830 | ||
9583bc14 EJ |
5831 | case OFPACT_EXIT: |
5832 | ctx->exit = true; | |
5833 | break; | |
5834 | ||
2d9b49dd BP |
5835 | case OFPACT_UNROLL_XLATE: |
5836 | xlate_ofpact_unroll_xlate(ctx, ofpact_get_UNROLL_XLATE(a)); | |
e672ff9b | 5837 | break; |
2d9b49dd | 5838 | |
9583bc14 | 5839 | case OFPACT_FIN_TIMEOUT: |
33bf9176 | 5840 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
5841 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); |
5842 | break; | |
5843 | ||
5844 | case OFPACT_CLEAR_ACTIONS: | |
2d9b49dd | 5845 | xlate_report_action_set(ctx, "was"); |
7fdb60a7 | 5846 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
5847 | ctx->xin->flow.actset_output = OFPP_UNSET; |
5848 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
5849 | break; |
5850 | ||
5851 | case OFPACT_WRITE_ACTIONS: | |
7e7e8dbb | 5852 | xlate_write_actions(ctx, ofpact_get_WRITE_ACTIONS(a)); |
2d9b49dd | 5853 | xlate_report_action_set(ctx, "is"); |
9583bc14 EJ |
5854 | break; |
5855 | ||
5856 | case OFPACT_WRITE_METADATA: | |
5857 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
5858 | flow->metadata &= ~metadata->mask; |
5859 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
5860 | break; |
5861 | ||
638a19b0 | 5862 | case OFPACT_METER: |
076caa2f | 5863 | xlate_meter_action(ctx, ofpact_get_METER(a)); |
638a19b0 JR |
5864 | break; |
5865 | ||
9583bc14 | 5866 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 5867 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 5868 | |
9167fc1a JR |
5869 | ovs_assert(ctx->table_id < ogt->table_id); |
5870 | ||
4468099e | 5871 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2cd20955 | 5872 | ogt->table_id, true, true, false); |
9583bc14 EJ |
5873 | break; |
5874 | } | |
5875 | ||
5876 | case OFPACT_SAMPLE: | |
5877 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
5878 | break; | |
d4abaff5 | 5879 | |
7ae62a67 | 5880 | case OFPACT_CLONE: |
bef503e8 | 5881 | xlate_clone(ctx, ofpact_get_CLONE(a)); |
7ae62a67 WT |
5882 | break; |
5883 | ||
07659514 | 5884 | case OFPACT_CT: |
07659514 JS |
5885 | compose_conntrack_action(ctx, ofpact_get_CT(a)); |
5886 | break; | |
5887 | ||
72fe7578 BP |
5888 | case OFPACT_CT_CLEAR: |
5889 | clear_conntrack(ctx); | |
5890 | break; | |
5891 | ||
9ac0aada JR |
5892 | case OFPACT_NAT: |
5893 | /* This will be processed by compose_conntrack_action(). */ | |
5894 | ctx->ct_nat_action = ofpact_get_NAT(a); | |
5895 | break; | |
5896 | ||
d4abaff5 | 5897 | case OFPACT_DEBUG_RECIRC: |
1d361a81 | 5898 | ctx_trigger_freeze(ctx); |
d4abaff5 BP |
5899 | a = ofpact_next(a); |
5900 | break; | |
9583bc14 | 5901 | } |
1d741d6d JR |
5902 | |
5903 | /* Check if need to store this and the remaining actions for later | |
5904 | * execution. */ | |
1d361a81 BP |
5905 | if (!ctx->error && ctx->exit && ctx_first_frozen_action(ctx)) { |
5906 | freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), ctx); | |
1d741d6d JR |
5907 | break; |
5908 | } | |
9583bc14 | 5909 | } |
9583bc14 EJ |
5910 | } |
5911 | ||
5912 | void | |
5913 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
1f4a8933 JR |
5914 | ovs_version_t version, const struct flow *flow, |
5915 | ofp_port_t in_port, struct rule_dpif *rule, uint16_t tcp_flags, | |
1520ef4f BP |
5916 | const struct dp_packet *packet, struct flow_wildcards *wc, |
5917 | struct ofpbuf *odp_actions) | |
9583bc14 EJ |
5918 | { |
5919 | xin->ofproto = ofproto; | |
1f4a8933 | 5920 | xin->tables_version = version; |
9583bc14 | 5921 | xin->flow = *flow; |
8d8ab6c2 | 5922 | xin->upcall_flow = flow; |
cc377352 | 5923 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 5924 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 | 5925 | xin->packet = packet; |
df70a773 | 5926 | xin->allow_side_effects = packet != NULL; |
9583bc14 | 5927 | xin->rule = rule; |
b256dc52 | 5928 | xin->xcache = NULL; |
9583bc14 EJ |
5929 | xin->ofpacts = NULL; |
5930 | xin->ofpacts_len = 0; | |
5931 | xin->tcp_flags = tcp_flags; | |
2d9b49dd | 5932 | xin->trace = NULL; |
9583bc14 | 5933 | xin->resubmit_stats = NULL; |
790c5d26 | 5934 | xin->depth = 0; |
cdd42eda | 5935 | xin->resubmits = 0; |
49a73e0c | 5936 | xin->wc = wc; |
1520ef4f | 5937 | xin->odp_actions = odp_actions; |
331c07ac | 5938 | xin->in_packet_out = false; |
e672ff9b JR |
5939 | |
5940 | /* Do recirc lookup. */ | |
1d361a81 | 5941 | xin->frozen_state = NULL; |
29b1ea3f BP |
5942 | if (flow->recirc_id) { |
5943 | const struct recirc_id_node *node | |
5944 | = recirc_id_node_find(flow->recirc_id); | |
5945 | if (node) { | |
1d361a81 | 5946 | xin->frozen_state = &node->state; |
29b1ea3f BP |
5947 | } |
5948 | } | |
9583bc14 EJ |
5949 | } |
5950 | ||
5951 | void | |
5952 | xlate_out_uninit(struct xlate_out *xout) | |
5953 | { | |
e672ff9b | 5954 | if (xout) { |
fbf5d6ec | 5955 | recirc_refs_unref(&xout->recircs); |
9583bc14 EJ |
5956 | } |
5957 | } | |
9583bc14 | 5958 | \f |
55954f6e EJ |
5959 | static struct skb_priority_to_dscp * |
5960 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
5961 | { | |
5962 | struct skb_priority_to_dscp *pdscp; | |
5963 | uint32_t hash; | |
5964 | ||
5965 | hash = hash_int(skb_priority, 0); | |
5966 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
5967 | if (pdscp->skb_priority == skb_priority) { | |
5968 | return pdscp; | |
5969 | } | |
5970 | } | |
5971 | return NULL; | |
5972 | } | |
5973 | ||
5974 | static bool | |
5975 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
5976 | uint8_t *dscp) | |
5977 | { | |
5978 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
5979 | *dscp = pdscp ? pdscp->dscp : 0; | |
5980 | return pdscp != NULL; | |
5981 | } | |
5982 | ||
16194afd DDP |
5983 | static size_t |
5984 | count_skb_priorities(const struct xport *xport) | |
5985 | { | |
5986 | return hmap_count(&xport->skb_priorities); | |
5987 | } | |
5988 | ||
55954f6e EJ |
5989 | static void |
5990 | clear_skb_priorities(struct xport *xport) | |
5991 | { | |
4ec3d7c7 | 5992 | struct skb_priority_to_dscp *pdscp; |
55954f6e | 5993 | |
4ec3d7c7 | 5994 | HMAP_FOR_EACH_POP (pdscp, hmap_node, &xport->skb_priorities) { |
55954f6e EJ |
5995 | free(pdscp); |
5996 | } | |
5997 | } | |
5998 | ||
ce4a6b76 BP |
5999 | static bool |
6000 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
6001 | { | |
46c88433 | 6002 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
6003 | const struct nlattr *a; |
6004 | unsigned int left; | |
6005 | ||
1520ef4f BP |
6006 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data, |
6007 | ctx->odp_actions->size) { | |
ce4a6b76 BP |
6008 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
6009 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
6010 | return true; | |
6011 | } | |
6012 | } | |
6013 | return false; | |
6014 | } | |
9583bc14 | 6015 | |
5e2a6702 | 6016 | #if defined(__linux__) |
7d031d7e BP |
6017 | /* Returns the maximum number of packets that the Linux kernel is willing to |
6018 | * queue up internally to certain kinds of software-implemented ports, or the | |
6019 | * default (and rarely modified) value if it cannot be determined. */ | |
6020 | static int | |
6021 | netdev_max_backlog(void) | |
6022 | { | |
6023 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
6024 | static int max_backlog = 1000; /* The normal default value. */ | |
6025 | ||
6026 | if (ovsthread_once_start(&once)) { | |
6027 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
6028 | FILE *stream; | |
6029 | int n; | |
6030 | ||
6031 | stream = fopen(filename, "r"); | |
6032 | if (!stream) { | |
120c348f | 6033 | VLOG_INFO("%s: open failed (%s)", filename, ovs_strerror(errno)); |
7d031d7e BP |
6034 | } else { |
6035 | if (fscanf(stream, "%d", &n) != 1) { | |
6036 | VLOG_WARN("%s: read error", filename); | |
6037 | } else if (n <= 100) { | |
6038 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
6039 | } else { | |
6040 | max_backlog = n; | |
6041 | } | |
6042 | fclose(stream); | |
6043 | } | |
6044 | ovsthread_once_done(&once); | |
6045 | ||
6046 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
6047 | } | |
6048 | ||
6049 | return max_backlog; | |
6050 | } | |
6051 | ||
6052 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
6053 | * 'odp_actions'. */ | |
6054 | static int | |
6055 | count_output_actions(const struct ofpbuf *odp_actions) | |
6056 | { | |
6057 | const struct nlattr *a; | |
6058 | size_t left; | |
6059 | int n = 0; | |
6060 | ||
6fd6ed71 | 6061 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
6062 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
6063 | n++; | |
6064 | } | |
6065 | } | |
6066 | return n; | |
6067 | } | |
5e2a6702 | 6068 | #endif /* defined(__linux__) */ |
7d031d7e BP |
6069 | |
6070 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
6071 | * can reliably handle in one go. On Linux, this is the value of the | |
6072 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
6073 | * packets that the kernel is willing to queue up for processing while the | |
6074 | * datapath is processing a set of actions. */ | |
6075 | static bool | |
5e2a6702 | 6076 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
6077 | { |
6078 | #ifdef __linux__ | |
6fd6ed71 | 6079 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
6080 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
6081 | #else | |
6082 | /* OSes other than Linux might have similar limits, but we don't know how | |
6083 | * to determine them.*/ | |
6084 | return false; | |
6085 | #endif | |
6086 | } | |
6087 | ||
234c3da9 BP |
6088 | static void |
6089 | xlate_wc_init(struct xlate_ctx *ctx) | |
6090 | { | |
6091 | flow_wildcards_init_catchall(ctx->wc); | |
6092 | ||
6093 | /* Some fields we consider to always be examined. */ | |
5e2e998a JR |
6094 | WC_MASK_FIELD(ctx->wc, in_port); |
6095 | WC_MASK_FIELD(ctx->wc, dl_type); | |
234c3da9 | 6096 | if (is_ip_any(&ctx->xin->flow)) { |
5e2e998a | 6097 | WC_MASK_FIELD_MASK(ctx->wc, nw_frag, FLOW_NW_FRAG_MASK); |
234c3da9 BP |
6098 | } |
6099 | ||
6100 | if (ctx->xbridge->support.odp.recirc) { | |
6101 | /* Always exactly match recirc_id when datapath supports | |
6102 | * recirculation. */ | |
5e2e998a | 6103 | WC_MASK_FIELD(ctx->wc, recirc_id); |
234c3da9 BP |
6104 | } |
6105 | ||
6106 | if (ctx->xbridge->netflow) { | |
6107 | netflow_mask_wc(&ctx->xin->flow, ctx->wc); | |
6108 | } | |
6109 | ||
6110 | tnl_wc_init(&ctx->xin->flow, ctx->wc); | |
6111 | } | |
6112 | ||
6113 | static void | |
6114 | xlate_wc_finish(struct xlate_ctx *ctx) | |
6115 | { | |
f0fb825a EG |
6116 | int i; |
6117 | ||
234c3da9 BP |
6118 | /* Clear the metadata and register wildcard masks, because we won't |
6119 | * use non-header fields as part of the cache. */ | |
6120 | flow_wildcards_clear_non_packet_fields(ctx->wc); | |
6121 | ||
6122 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow | |
6123 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
6124 | * represent these fields. The datapath interface, on the other hand, | |
6125 | * represents them with just 8 bits each. This means that if the high | |
6126 | * 8 bits of the masks for these fields somehow become set, then they | |
6127 | * will get chopped off by a round trip through the datapath, and | |
6128 | * revalidation will spot that as an inconsistency and delete the flow. | |
6129 | * Avoid the problem here by making sure that only the low 8 bits of | |
6130 | * either field can be unwildcarded for ICMP. | |
6131 | */ | |
a75636c8 | 6132 | if (is_icmpv4(&ctx->xin->flow, NULL) || is_icmpv6(&ctx->xin->flow, NULL)) { |
234c3da9 BP |
6133 | ctx->wc->masks.tp_src &= htons(UINT8_MAX); |
6134 | ctx->wc->masks.tp_dst &= htons(UINT8_MAX); | |
6135 | } | |
6136 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ | |
f0fb825a EG |
6137 | for (i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { |
6138 | if (ctx->wc->masks.vlans[i].tci) { | |
6139 | ctx->wc->masks.vlans[i].tci |= htons(VLAN_CFI); | |
6140 | } | |
234c3da9 | 6141 | } |
4a7ab326 DDP |
6142 | |
6143 | /* The classifier might return masks that match on tp_src and tp_dst even | |
6144 | * for later fragments. This happens because there might be flows that | |
6145 | * match on tp_src or tp_dst without matching on the frag bits, because | |
6146 | * it is not a prerequisite for OpenFlow. Since it is a prerequisite for | |
6147 | * datapath flows and since tp_src and tp_dst are always going to be 0, | |
6148 | * wildcard the fields here. */ | |
6149 | if (ctx->xin->flow.nw_frag & FLOW_NW_FRAG_LATER) { | |
6150 | ctx->wc->masks.tp_src = 0; | |
6151 | ctx->wc->masks.tp_dst = 0; | |
6152 | } | |
234c3da9 BP |
6153 | } |
6154 | ||
e672ff9b JR |
6155 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
6156 | * 'xout'. | |
56450a41 | 6157 | * The caller must take responsibility for eventually freeing 'xout', with |
fff1b9c0 JR |
6158 | * xlate_out_uninit(). |
6159 | * Returns 'XLATE_OK' if translation was successful. In case of an error an | |
6160 | * empty set of actions will be returned in 'xin->odp_actions' (if non-NULL), | |
6161 | * so that most callers may ignore the return value and transparently install a | |
6162 | * drop flow when the translation fails. */ | |
6163 | enum xlate_error | |
84f0f298 | 6164 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) |
9583bc14 | 6165 | { |
e467ea42 BP |
6166 | *xout = (struct xlate_out) { |
6167 | .slow = 0, | |
fbf5d6ec | 6168 | .recircs = RECIRC_REFS_EMPTY_INITIALIZER, |
e467ea42 BP |
6169 | }; |
6170 | ||
84f0f298 | 6171 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
bb00fdef BP |
6172 | struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto); |
6173 | if (!xbridge) { | |
fff1b9c0 | 6174 | return XLATE_BRIDGE_NOT_FOUND; |
bb00fdef BP |
6175 | } |
6176 | ||
33bf9176 BP |
6177 | struct flow *flow = &xin->flow; |
6178 | ||
84cf3c1f | 6179 | uint8_t stack_stub[1024]; |
bb00fdef | 6180 | uint64_t action_set_stub[1024 / 8]; |
1d361a81 | 6181 | uint64_t frozen_actions_stub[1024 / 8]; |
1520ef4f BP |
6182 | uint64_t actions_stub[256 / 8]; |
6183 | struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub); | |
bb00fdef BP |
6184 | struct xlate_ctx ctx = { |
6185 | .xin = xin, | |
6186 | .xout = xout, | |
6187 | .base_flow = *flow, | |
c2b878e0 | 6188 | .orig_tunnel_ipv6_dst = flow_tnl_dst(&flow->tunnel), |
bb00fdef BP |
6189 | .xbridge = xbridge, |
6190 | .stack = OFPBUF_STUB_INITIALIZER(stack_stub), | |
6191 | .rule = xin->rule, | |
c0e638aa BP |
6192 | .wc = (xin->wc |
6193 | ? xin->wc | |
f36efd90 | 6194 | : &(struct flow_wildcards) { .masks = { .dl_type = 0 } }), |
1520ef4f | 6195 | .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions, |
bb00fdef | 6196 | |
790c5d26 | 6197 | .depth = xin->depth, |
cdd42eda | 6198 | .resubmits = xin->resubmits, |
bb00fdef BP |
6199 | .in_group = false, |
6200 | .in_action_set = false, | |
331c07ac | 6201 | .in_packet_out = xin->in_packet_out, |
bb00fdef BP |
6202 | |
6203 | .table_id = 0, | |
6204 | .rule_cookie = OVS_BE64_MAX, | |
6205 | .orig_skb_priority = flow->skb_priority, | |
6206 | .sflow_n_outputs = 0, | |
6207 | .sflow_odp_port = 0, | |
2031ef97 | 6208 | .nf_output_iface = NF_OUT_DROP, |
bb00fdef | 6209 | .exit = false, |
fff1b9c0 | 6210 | .error = XLATE_OK, |
3d6151f3 | 6211 | .mirrors = 0, |
bb00fdef | 6212 | |
1d361a81 | 6213 | .freezing = false, |
53cc166a | 6214 | .recirc_update_dp_hash = false, |
1d361a81 | 6215 | .frozen_actions = OFPBUF_STUB_INITIALIZER(frozen_actions_stub), |
77ab5fd2 | 6216 | .pause = NULL, |
bb00fdef | 6217 | |
e12ec36b | 6218 | .was_mpls = false, |
07659514 | 6219 | .conntracked = false, |
bb00fdef | 6220 | |
9ac0aada JR |
6221 | .ct_nat_action = NULL, |
6222 | ||
bb00fdef BP |
6223 | .action_set_has_group = false, |
6224 | .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub), | |
6225 | }; | |
865ca6cf BP |
6226 | |
6227 | /* 'base_flow' reflects the packet as it came in, but we need it to reflect | |
42deb67d PS |
6228 | * the packet as the datapath will treat it for output actions. Our |
6229 | * datapath doesn't retain tunneling information without us re-setting | |
6230 | * it, so clear the tunnel data. | |
865ca6cf | 6231 | */ |
42deb67d | 6232 | |
bb00fdef | 6233 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
865ca6cf | 6234 | |
1520ef4f | 6235 | ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE); |
c0e638aa | 6236 | xlate_wc_init(&ctx); |
bb00fdef | 6237 | |
46c88433 | 6238 | COVERAGE_INC(xlate_actions); |
9583bc14 | 6239 | |
2d9b49dd BP |
6240 | xin->trace = xlate_report(&ctx, OFT_BRIDGE, "bridge(\"%s\")", |
6241 | xbridge->name); | |
1d361a81 BP |
6242 | if (xin->frozen_state) { |
6243 | const struct frozen_state *state = xin->frozen_state; | |
e672ff9b | 6244 | |
2d9b49dd BP |
6245 | struct ovs_list *old_trace = xin->trace; |
6246 | xin->trace = xlate_report(&ctx, OFT_THAW, "thaw"); | |
d6bef3cc | 6247 | |
e672ff9b | 6248 | if (xin->ofpacts_len > 0 || ctx.rule) { |
2d9b49dd BP |
6249 | xlate_report_error(&ctx, "Recirculation conflict (%s)!", |
6250 | xin->ofpacts_len ? "actions" : "rule"); | |
fff1b9c0 | 6251 | ctx.error = XLATE_RECIRCULATION_CONFLICT; |
1520ef4f | 6252 | goto exit; |
e672ff9b JR |
6253 | } |
6254 | ||
6255 | /* Set the bridge for post-recirculation processing if needed. */ | |
07a3cd5c | 6256 | if (!uuid_equals(&ctx.xbridge->ofproto->uuid, &state->ofproto_uuid)) { |
e672ff9b | 6257 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
2082425c | 6258 | const struct xbridge *new_bridge |
290835f9 | 6259 | = xbridge_lookup_by_uuid(xcfg, &state->ofproto_uuid); |
e672ff9b JR |
6260 | |
6261 | if (OVS_UNLIKELY(!new_bridge)) { | |
6262 | /* Drop the packet if the bridge cannot be found. */ | |
2d9b49dd | 6263 | xlate_report_error(&ctx, "Frozen bridge no longer exists."); |
fff1b9c0 | 6264 | ctx.error = XLATE_BRIDGE_NOT_FOUND; |
2d9b49dd | 6265 | xin->trace = old_trace; |
1520ef4f | 6266 | goto exit; |
e672ff9b JR |
6267 | } |
6268 | ctx.xbridge = new_bridge; | |
1f4a8933 JR |
6269 | /* The bridge is now known so obtain its table version. */ |
6270 | ctx.xin->tables_version | |
6271 | = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
e672ff9b JR |
6272 | } |
6273 | ||
1d361a81 BP |
6274 | /* Set the thawed table id. Note: A table lookup is done only if there |
6275 | * are no frozen actions. */ | |
2082425c | 6276 | ctx.table_id = state->table_id; |
2d9b49dd BP |
6277 | xlate_report(&ctx, OFT_THAW, |
6278 | "Resuming from table %"PRIu8, ctx.table_id); | |
e672ff9b | 6279 | |
07659514 | 6280 | if (!state->conntracked) { |
72fe7578 | 6281 | clear_conntrack(&ctx); |
07659514 JS |
6282 | } |
6283 | ||
e672ff9b | 6284 | /* Restore pipeline metadata. May change flow's in_port and other |
1d361a81 BP |
6285 | * metadata to the values that existed when freezing was triggered. */ |
6286 | frozen_metadata_to_flow(&state->metadata, flow); | |
e672ff9b JR |
6287 | |
6288 | /* Restore stack, if any. */ | |
2082425c | 6289 | if (state->stack) { |
84cf3c1f | 6290 | ofpbuf_put(&ctx.stack, state->stack, state->stack_size); |
e672ff9b JR |
6291 | } |
6292 | ||
29bae541 BP |
6293 | /* Restore mirror state. */ |
6294 | ctx.mirrors = state->mirrors; | |
6295 | ||
e672ff9b | 6296 | /* Restore action set, if any. */ |
2082425c | 6297 | if (state->action_set_len) { |
2d9b49dd | 6298 | xlate_report_actions(&ctx, OFT_THAW, "Restoring action set", |
417509fa | 6299 | state->action_set, state->action_set_len); |
d6bef3cc | 6300 | |
7e7e8dbb BP |
6301 | flow->actset_output = OFPP_UNSET; |
6302 | xlate_write_actions__(&ctx, state->action_set, | |
6303 | state->action_set_len); | |
e672ff9b JR |
6304 | } |
6305 | ||
1d361a81 BP |
6306 | /* Restore frozen actions. If there are no actions, processing will |
6307 | * start with a lookup in the table set above. */ | |
417509fa BP |
6308 | xin->ofpacts = state->ofpacts; |
6309 | xin->ofpacts_len = state->ofpacts_len; | |
6310 | if (state->ofpacts_len) { | |
2d9b49dd | 6311 | xlate_report_actions(&ctx, OFT_THAW, "Restoring actions", |
d6bef3cc | 6312 | xin->ofpacts, xin->ofpacts_len); |
e672ff9b | 6313 | } |
e672ff9b | 6314 | |
2d9b49dd BP |
6315 | xin->trace = old_trace; |
6316 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
6317 | xlate_report_error(&ctx, | |
6318 | "Recirculation context not found for ID %"PRIx32, | |
6319 | flow->recirc_id); | |
fff1b9c0 | 6320 | ctx.error = XLATE_NO_RECIRCULATION_CONTEXT; |
1520ef4f | 6321 | goto exit; |
e672ff9b | 6322 | } |
9583bc14 | 6323 | |
8d8ab6c2 JG |
6324 | /* Tunnel metadata in udpif format must be normalized before translation. */ |
6325 | if (flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
5b09d9f7 MS |
6326 | const struct tun_table *tun_tab = ofproto_get_tun_tab( |
6327 | &ctx.xbridge->ofproto->up); | |
8d8ab6c2 JG |
6328 | int err; |
6329 | ||
6330 | err = tun_metadata_from_geneve_udpif(tun_tab, &xin->upcall_flow->tunnel, | |
6331 | &xin->upcall_flow->tunnel, | |
6332 | &flow->tunnel); | |
6333 | if (err) { | |
2d9b49dd | 6334 | xlate_report_error(&ctx, "Invalid Geneve tunnel metadata"); |
8d8ab6c2 JG |
6335 | ctx.error = XLATE_INVALID_TUNNEL_METADATA; |
6336 | goto exit; | |
6337 | } | |
6338 | } else if (!flow->tunnel.metadata.tab) { | |
6339 | /* If the original flow did not come in on a tunnel, then it won't have | |
6340 | * FLOW_TNL_F_UDPIF set. However, we still need to have a metadata | |
6341 | * table in case we generate tunnel actions. */ | |
5b09d9f7 MS |
6342 | flow->tunnel.metadata.tab = ofproto_get_tun_tab( |
6343 | &ctx.xbridge->ofproto->up); | |
8d8ab6c2 JG |
6344 | } |
6345 | ctx.wc->masks.tunnel.metadata.tab = flow->tunnel.metadata.tab; | |
6346 | ||
10c44245 | 6347 | if (!xin->ofpacts && !ctx.rule) { |
b2e89cc9 | 6348 | ctx.rule = rule_dpif_lookup_from_table( |
1f4a8933 | 6349 | ctx.xbridge->ofproto, ctx.xin->tables_version, flow, ctx.wc, |
1e1e1d19 | 6350 | ctx.xin->resubmit_stats, &ctx.table_id, |
a027899e | 6351 | flow->in_port.ofp_port, true, true, ctx.xin->xcache); |
10c44245 | 6352 | if (ctx.xin->resubmit_stats) { |
b2e89cc9 | 6353 | rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats); |
10c44245 | 6354 | } |
b256dc52 JS |
6355 | if (ctx.xin->xcache) { |
6356 | struct xc_entry *entry; | |
6357 | ||
6358 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
901a517e | 6359 | entry->rule = ctx.rule; |
07a3cd5c | 6360 | ofproto_rule_ref(&ctx.rule->up); |
b256dc52 | 6361 | } |
a8c31348 | 6362 | |
2d9b49dd | 6363 | xlate_report_table(&ctx, ctx.rule, ctx.table_id); |
10c44245 | 6364 | } |
10c44245 | 6365 | |
1d361a81 | 6366 | /* Get the proximate input port of the packet. (If xin->frozen_state, |
14d2b8b2 BP |
6367 | * flow->in_port is the ultimate input port of the packet.) */ |
6368 | struct xport *in_port = get_ofp_port(xbridge, | |
6369 | ctx.base_flow.in_port.ofp_port); | |
6370 | ||
1d361a81 BP |
6371 | /* Tunnel stats only for not-thawed packets. */ |
6372 | if (!xin->frozen_state && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
6373 | if (ctx.xin->resubmit_stats) { |
6374 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
6375 | if (in_port->bfd) { | |
6376 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
6377 | } | |
6378 | } | |
6379 | if (ctx.xin->xcache) { | |
6380 | struct xc_entry *entry; | |
6381 | ||
6382 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
901a517e JR |
6383 | entry->dev.rx = netdev_ref(in_port->netdev); |
6384 | entry->dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
6385 | } |
6386 | } | |
6387 | ||
1d361a81 | 6388 | if (!xin->frozen_state && process_special(&ctx, in_port)) { |
bef1403e BP |
6389 | /* process_special() did all the processing for this packet. |
6390 | * | |
1d361a81 BP |
6391 | * We do not perform special processing on thawed packets, since that |
6392 | * was done before they were frozen and should not be redone. */ | |
bef1403e BP |
6393 | } else if (in_port && in_port->xbundle |
6394 | && xbundle_mirror_out(xbridge, in_port->xbundle)) { | |
2d9b49dd BP |
6395 | xlate_report_error(&ctx, "dropping packet received on port " |
6396 | "%s, which is reserved exclusively for mirroring", | |
6397 | in_port->xbundle->name); | |
bef1403e | 6398 | } else { |
1d361a81 | 6399 | /* Sampling is done on initial reception; don't redo after thawing. */ |
a6092018 | 6400 | unsigned int user_cookie_offset = 0; |
1d361a81 | 6401 | if (!xin->frozen_state) { |
a6092018 BP |
6402 | user_cookie_offset = compose_sflow_action(&ctx); |
6403 | compose_ipfix_action(&ctx, ODPP_NONE); | |
e672ff9b | 6404 | } |
0731abc5 | 6405 | size_t sample_actions_len = ctx.odp_actions->size; |
9583bc14 | 6406 | |
234c3da9 BP |
6407 | if (tnl_process_ecn(flow) |
6408 | && (!in_port || may_receive(in_port, &ctx))) { | |
1806291d BP |
6409 | const struct ofpact *ofpacts; |
6410 | size_t ofpacts_len; | |
6411 | ||
6412 | if (xin->ofpacts) { | |
6413 | ofpacts = xin->ofpacts; | |
6414 | ofpacts_len = xin->ofpacts_len; | |
6415 | } else if (ctx.rule) { | |
6416 | const struct rule_actions *actions | |
07a3cd5c | 6417 | = rule_get_actions(&ctx.rule->up); |
1806291d BP |
6418 | ofpacts = actions->ofpacts; |
6419 | ofpacts_len = actions->ofpacts_len; | |
07a3cd5c | 6420 | ctx.rule_cookie = ctx.rule->up.flow_cookie; |
1806291d BP |
6421 | } else { |
6422 | OVS_NOT_REACHED(); | |
6423 | } | |
6424 | ||
7efbc3b7 | 6425 | mirror_ingress_packet(&ctx); |
9583bc14 | 6426 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
fff1b9c0 JR |
6427 | if (ctx.error) { |
6428 | goto exit; | |
6429 | } | |
9583bc14 EJ |
6430 | |
6431 | /* We've let OFPP_NORMAL and the learning action look at the | |
1d361a81 | 6432 | * packet, so cancel all actions and freezing if forwarding is |
8a5fb3b4 | 6433 | * disabled. */ |
9efd308e DV |
6434 | if (in_port && (!xport_stp_forward_state(in_port) || |
6435 | !xport_rstp_forward_state(in_port))) { | |
1520ef4f | 6436 | ctx.odp_actions->size = sample_actions_len; |
1d361a81 | 6437 | ctx_cancel_freeze(&ctx); |
8a5fb3b4 BP |
6438 | ofpbuf_clear(&ctx.action_set); |
6439 | } | |
6440 | ||
1d361a81 | 6441 | if (!ctx.freezing) { |
8a5fb3b4 | 6442 | xlate_action_set(&ctx); |
e672ff9b | 6443 | } |
1d361a81 | 6444 | if (ctx.freezing) { |
77ab5fd2 | 6445 | finish_freezing(&ctx); |
9583bc14 EJ |
6446 | } |
6447 | } | |
6448 | ||
e672ff9b | 6449 | /* Output only fully processed packets. */ |
1d361a81 | 6450 | if (!ctx.freezing |
e672ff9b | 6451 | && xbridge->has_in_band |
ce4a6b76 BP |
6452 | && in_band_must_output_to_local_port(flow) |
6453 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 6454 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 6455 | } |
aaa0fbae | 6456 | |
a6092018 BP |
6457 | if (user_cookie_offset) { |
6458 | fix_sflow_action(&ctx, user_cookie_offset); | |
e672ff9b | 6459 | } |
9583bc14 EJ |
6460 | } |
6461 | ||
1520ef4f | 6462 | if (nl_attr_oversized(ctx.odp_actions->size)) { |
542024c4 | 6463 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
6464 | * can't hand them to the kernel directly. dpif_execute() can execute |
6465 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
6466 | * prevent the flow from being installed. */ | |
6467 | COVERAGE_INC(xlate_actions_oversize); | |
6468 | ctx.xout->slow |= SLOW_ACTION; | |
1520ef4f | 6469 | } else if (too_many_output_actions(ctx.odp_actions)) { |
7d031d7e BP |
6470 | COVERAGE_INC(xlate_actions_too_many_output); |
6471 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
6472 | } |
6473 | ||
64fb5f82 JP |
6474 | /* Update NetFlow for non-frozen traffic. */ |
6475 | if (xbridge->netflow && !xin->frozen_state) { | |
1806291d BP |
6476 | if (ctx.xin->resubmit_stats) { |
6477 | netflow_flow_update(xbridge->netflow, flow, | |
2031ef97 | 6478 | ctx.nf_output_iface, |
1806291d BP |
6479 | ctx.xin->resubmit_stats); |
6480 | } | |
6481 | if (ctx.xin->xcache) { | |
6482 | struct xc_entry *entry; | |
b256dc52 | 6483 | |
1806291d | 6484 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); |
901a517e JR |
6485 | entry->nf.netflow = netflow_ref(xbridge->netflow); |
6486 | entry->nf.flow = xmemdup(flow, sizeof *flow); | |
6487 | entry->nf.iface = ctx.nf_output_iface; | |
d6fc5f57 EJ |
6488 | } |
6489 | } | |
6490 | ||
8d8ab6c2 JG |
6491 | /* Translate tunnel metadata masks to udpif format if necessary. */ |
6492 | if (xin->upcall_flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
6493 | if (ctx.wc->masks.tunnel.metadata.present.map) { | |
6494 | const struct flow_tnl *upcall_tnl = &xin->upcall_flow->tunnel; | |
6495 | struct geneve_opt opts[TLV_TOT_OPT_SIZE / | |
6496 | sizeof(struct geneve_opt)]; | |
6497 | ||
6498 | tun_metadata_to_geneve_udpif_mask(&flow->tunnel, | |
6499 | &ctx.wc->masks.tunnel, | |
6500 | upcall_tnl->metadata.opts.gnv, | |
6501 | upcall_tnl->metadata.present.len, | |
6502 | opts); | |
6503 | memset(&ctx.wc->masks.tunnel.metadata, 0, | |
6504 | sizeof ctx.wc->masks.tunnel.metadata); | |
6505 | memcpy(&ctx.wc->masks.tunnel.metadata.opts.gnv, opts, | |
6506 | upcall_tnl->metadata.present.len); | |
6507 | } | |
6508 | ctx.wc->masks.tunnel.metadata.present.len = 0xff; | |
6509 | ctx.wc->masks.tunnel.metadata.tab = NULL; | |
6510 | ctx.wc->masks.tunnel.flags |= FLOW_TNL_F_UDPIF; | |
6511 | } else if (!xin->upcall_flow->tunnel.metadata.tab) { | |
6512 | /* If we didn't have options in UDPIF format and didn't have an existing | |
6513 | * metadata table, then it means that there were no options at all when | |
6514 | * we started processing and any wildcards we picked up were from | |
6515 | * action generation. Without options on the incoming packet, wildcards | |
6516 | * aren't meaningful. To avoid them possibly getting misinterpreted, | |
6517 | * just clear everything. */ | |
6518 | if (ctx.wc->masks.tunnel.metadata.present.map) { | |
6519 | memset(&ctx.wc->masks.tunnel.metadata, 0, | |
6520 | sizeof ctx.wc->masks.tunnel.metadata); | |
6521 | } else { | |
6522 | ctx.wc->masks.tunnel.metadata.tab = NULL; | |
6523 | } | |
6524 | } | |
6525 | ||
c0e638aa | 6526 | xlate_wc_finish(&ctx); |
1520ef4f BP |
6527 | |
6528 | exit: | |
8d8ab6c2 JG |
6529 | /* Reset the table to what it was when we came in. If we only fetched |
6530 | * it locally, then it has no meaning outside of flow translation. */ | |
6531 | flow->tunnel.metadata.tab = xin->upcall_flow->tunnel.metadata.tab; | |
6532 | ||
1520ef4f BP |
6533 | ofpbuf_uninit(&ctx.stack); |
6534 | ofpbuf_uninit(&ctx.action_set); | |
1d361a81 | 6535 | ofpbuf_uninit(&ctx.frozen_actions); |
1520ef4f | 6536 | ofpbuf_uninit(&scratch_actions); |
fff1b9c0 JR |
6537 | |
6538 | /* Make sure we return a "drop flow" in case of an error. */ | |
6539 | if (ctx.error) { | |
6540 | xout->slow = 0; | |
6541 | if (xin->odp_actions) { | |
6542 | ofpbuf_clear(xin->odp_actions); | |
6543 | } | |
6544 | } | |
6545 | return ctx.error; | |
91d6cd12 AW |
6546 | } |
6547 | ||
77ab5fd2 BP |
6548 | enum ofperr |
6549 | xlate_resume(struct ofproto_dpif *ofproto, | |
6550 | const struct ofputil_packet_in_private *pin, | |
6551 | struct ofpbuf *odp_actions, | |
6552 | enum slow_path_reason *slow) | |
6553 | { | |
6554 | struct dp_packet packet; | |
6555 | dp_packet_use_const(&packet, pin->public.packet, | |
6556 | pin->public.packet_len); | |
6557 | ||
6558 | struct flow flow; | |
6559 | flow_extract(&packet, &flow); | |
6560 | ||
6561 | struct xlate_in xin; | |
1f4a8933 JR |
6562 | xlate_in_init(&xin, ofproto, ofproto_dpif_get_tables_version(ofproto), |
6563 | &flow, 0, NULL, ntohs(flow.tcp_flags), | |
77ab5fd2 BP |
6564 | &packet, NULL, odp_actions); |
6565 | ||
6566 | struct ofpact_note noop; | |
6567 | ofpact_init_NOTE(&noop); | |
6568 | noop.length = 0; | |
6569 | ||
6570 | bool any_actions = pin->actions_len > 0; | |
6571 | struct frozen_state state = { | |
6572 | .table_id = 0, /* Not the table where NXAST_PAUSE was executed. */ | |
6573 | .ofproto_uuid = pin->bridge, | |
6574 | .stack = pin->stack, | |
84cf3c1f | 6575 | .stack_size = pin->stack_size, |
77ab5fd2 BP |
6576 | .mirrors = pin->mirrors, |
6577 | .conntracked = pin->conntracked, | |
6578 | ||
6579 | /* When there are no actions, xlate_actions() will search the flow | |
6580 | * table. We don't want it to do that (we want it to resume), so | |
6581 | * supply a no-op action if there aren't any. | |
6582 | * | |
6583 | * (We can't necessarily avoid translating actions entirely if there | |
6584 | * aren't any actions, because there might be some finishing-up to do | |
6585 | * at the end of the pipeline, and we don't check for those | |
6586 | * conditions.) */ | |
6587 | .ofpacts = any_actions ? pin->actions : &noop.ofpact, | |
6588 | .ofpacts_len = any_actions ? pin->actions_len : sizeof noop, | |
6589 | ||
6590 | .action_set = pin->action_set, | |
6591 | .action_set_len = pin->action_set_len, | |
6592 | }; | |
6593 | frozen_metadata_from_flow(&state.metadata, | |
6594 | &pin->public.flow_metadata.flow); | |
6595 | xin.frozen_state = &state; | |
6596 | ||
6597 | struct xlate_out xout; | |
6598 | enum xlate_error error = xlate_actions(&xin, &xout); | |
6599 | *slow = xout.slow; | |
6600 | xlate_out_uninit(&xout); | |
6601 | ||
6602 | /* xlate_actions() can generate a number of errors, but only | |
6603 | * XLATE_BRIDGE_NOT_FOUND really stands out to me as one that we should be | |
6604 | * sure to report over OpenFlow. The others could come up in packet-outs | |
6605 | * or regular flow translation and I don't think that it's going to be too | |
6606 | * useful to report them to the controller. */ | |
6607 | return error == XLATE_BRIDGE_NOT_FOUND ? OFPERR_NXR_STALE : 0; | |
6608 | } | |
6609 | ||
2eb79142 JG |
6610 | /* Sends 'packet' out 'ofport'. If 'port' is a tunnel and that tunnel type |
6611 | * supports a notion of an OAM flag, sets it if 'oam' is true. | |
91d6cd12 AW |
6612 | * May modify 'packet'. |
6613 | * Returns 0 if successful, otherwise a positive errno value. */ | |
6614 | int | |
2eb79142 JG |
6615 | xlate_send_packet(const struct ofport_dpif *ofport, bool oam, |
6616 | struct dp_packet *packet) | |
91d6cd12 | 6617 | { |
84f0f298 | 6618 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 6619 | struct xport *xport; |
2eb79142 JG |
6620 | uint64_t ofpacts_stub[1024 / 8]; |
6621 | struct ofpbuf ofpacts; | |
91d6cd12 | 6622 | struct flow flow; |
91d6cd12 | 6623 | |
2eb79142 | 6624 | ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
91d6cd12 | 6625 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ |
cf62fa4c | 6626 | flow_extract(packet, &flow); |
b5e7e61a | 6627 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 6628 | |
84f0f298 | 6629 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 6630 | if (!xport) { |
02ea2703 | 6631 | return EINVAL; |
91d6cd12 | 6632 | } |
2eb79142 JG |
6633 | |
6634 | if (oam) { | |
128684a6 JR |
6635 | const ovs_be16 oam = htons(NX_TUN_FLAG_OAM); |
6636 | ofpact_put_set_field(&ofpacts, mf_from_id(MFF_TUN_FLAGS), &oam, &oam); | |
2eb79142 JG |
6637 | } |
6638 | ||
6639 | ofpact_put_OUTPUT(&ofpacts)->port = xport->ofp_port; | |
e491a67a | 6640 | |
1f4a8933 JR |
6641 | /* Actions here are not referring to anything versionable (flow tables or |
6642 | * groups) so we don't need to worry about the version here. */ | |
6643 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, | |
6644 | OVS_VERSION_MAX, &flow, NULL, | |
2eb79142 | 6645 | ofpacts.data, ofpacts.size, packet); |
9583bc14 | 6646 | } |
b256dc52 | 6647 | |
901a517e | 6648 | void |
064799a1 JR |
6649 | xlate_mac_learning_update(const struct ofproto_dpif *ofproto, |
6650 | ofp_port_t in_port, struct eth_addr dl_src, | |
6651 | int vlan, bool is_grat_arp) | |
b256dc52 | 6652 | { |
84f0f298 | 6653 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
6654 | struct xbridge *xbridge; |
6655 | struct xbundle *xbundle; | |
b256dc52 | 6656 | |
84f0f298 | 6657 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
6658 | if (!xbridge) { |
6659 | return; | |
6660 | } | |
6661 | ||
2d9b49dd | 6662 | xbundle = lookup_input_bundle__(xbridge, in_port, NULL); |
b256dc52 JS |
6663 | if (!xbundle) { |
6664 | return; | |
6665 | } | |
6666 | ||
2d9b49dd | 6667 | update_learning_table__(xbridge, xbundle, dl_src, vlan, is_grat_arp); |
b256dc52 | 6668 | } |
bef503e8 AZ |
6669 | |
6670 | void | |
6671 | xlate_disable_dp_clone(const struct ofproto_dpif *ofproto) | |
6672 | { | |
6673 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
6674 | struct xbridge *xbridge = xbridge_lookup(xcfg, ofproto); | |
6675 | ||
6676 | if (xbridge) { | |
6677 | xbridge->support.clone = false; | |
6678 | } | |
6679 | } |