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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. */ | |
130 | int vlan; /* -1=trunk port, else a 12-bit VLAN ID. */ | |
131 | unsigned long *trunks; /* Bitmap of trunked VLANs, if 'vlan' == -1. | |
132 | * NULL if all VLANs are trunked. */ | |
133 | bool use_priority_tags; /* Use 802.1p tag for frames in VLAN 0? */ | |
134 | bool floodable; /* No port has OFPUTIL_PC_NO_FLOOD set? */ | |
c005f976 | 135 | bool protected; /* Protected port mode */ |
46c88433 EJ |
136 | }; |
137 | ||
138 | struct xport { | |
139 | struct hmap_node hmap_node; /* Node in global 'xports' map. */ | |
140 | struct ofport_dpif *ofport; /* Key in global 'xports map. */ | |
141 | ||
142 | struct hmap_node ofp_node; /* Node in parent xbridge 'xports' map. */ | |
143 | ofp_port_t ofp_port; /* Key in parent xbridge 'xports' map. */ | |
144 | ||
145 | odp_port_t odp_port; /* Datapath port number or ODPP_NONE. */ | |
146 | ||
ca6ba700 | 147 | struct ovs_list bundle_node; /* In parent xbundle (if it exists). */ |
46c88433 EJ |
148 | struct xbundle *xbundle; /* Parent xbundle or null. */ |
149 | ||
150 | struct netdev *netdev; /* 'ofport''s netdev. */ | |
151 | ||
152 | struct xbridge *xbridge; /* Parent bridge. */ | |
153 | struct xport *peer; /* Patch port peer or null. */ | |
154 | ||
155 | enum ofputil_port_config config; /* OpenFlow port configuration. */ | |
dd8cd4b4 | 156 | enum ofputil_port_state state; /* OpenFlow port state. */ |
92cf817b | 157 | int stp_port_no; /* STP port number or -1 if not in use. */ |
f025bcb7 | 158 | struct rstp_port *rstp_port; /* RSTP port or null. */ |
46c88433 | 159 | |
55954f6e EJ |
160 | struct hmap skb_priorities; /* Map of 'skb_priority_to_dscp's. */ |
161 | ||
46c88433 EJ |
162 | bool may_enable; /* May be enabled in bonds. */ |
163 | bool is_tunnel; /* Is a tunnel port. */ | |
164 | ||
165 | struct cfm *cfm; /* CFM handle or null. */ | |
166 | struct bfd *bfd; /* BFD handle or null. */ | |
0477baa9 | 167 | struct lldp *lldp; /* LLDP handle or null. */ |
46c88433 EJ |
168 | }; |
169 | ||
4d0acc70 EJ |
170 | struct xlate_ctx { |
171 | struct xlate_in *xin; | |
172 | struct xlate_out *xout; | |
173 | ||
46c88433 | 174 | const struct xbridge *xbridge; |
4d0acc70 EJ |
175 | |
176 | /* Flow at the last commit. */ | |
177 | struct flow base_flow; | |
178 | ||
179 | /* Tunnel IP destination address as received. This is stored separately | |
180 | * as the base_flow.tunnel is cleared on init to reflect the datapath | |
181 | * behavior. Used to make sure not to send tunneled output to ourselves, | |
182 | * which might lead to an infinite loop. This could happen easily | |
183 | * if a tunnel is marked as 'ip_remote=flow', and the flow does not | |
184 | * actually set the tun_dst field. */ | |
e4d3706c | 185 | struct in6_addr orig_tunnel_ipv6_dst; |
4d0acc70 | 186 | |
84cf3c1f JR |
187 | /* Stack for the push and pop actions. See comment above nx_stack_push() |
188 | * in nx-match.c for info on how the stack is stored. */ | |
4d0acc70 EJ |
189 | struct ofpbuf stack; |
190 | ||
191 | /* The rule that we are currently translating, or NULL. */ | |
192 | struct rule_dpif *rule; | |
193 | ||
49a73e0c BP |
194 | /* Flow translation populates this with wildcards relevant in translation. |
195 | * When 'xin->wc' is nonnull, this is the same pointer. When 'xin->wc' is | |
c0e638aa | 196 | * null, this is a pointer to a temporary buffer. */ |
49a73e0c BP |
197 | struct flow_wildcards *wc; |
198 | ||
1520ef4f BP |
199 | /* Output buffer for datapath actions. When 'xin->odp_actions' is nonnull, |
200 | * this is the same pointer. When 'xin->odp_actions' is null, this points | |
201 | * to a scratch ofpbuf. This allows code to add actions to | |
202 | * 'ctx->odp_actions' without worrying about whether the caller really | |
203 | * wants actions. */ | |
204 | struct ofpbuf *odp_actions; | |
205 | ||
790c5d26 BP |
206 | /* Statistics maintained by xlate_table_action(). |
207 | * | |
2d9b49dd | 208 | * These statistics limit the amount of work that a single flow |
790c5d26 BP |
209 | * translation can perform. The goal of the first of these, 'depth', is |
210 | * primarily to prevent translation from performing an infinite amount of | |
211 | * work. It counts the current depth of nested "resubmit"s (and a few | |
212 | * other activities); when a resubmit returns, it decreases. Resubmits to | |
213 | * tables in strictly monotonically increasing order don't contribute to | |
214 | * 'depth' because they cannot cause a flow translation to take an infinite | |
215 | * amount of time (because the number of tables is finite). Translation | |
216 | * aborts when 'depth' exceeds MAX_DEPTH. | |
217 | * | |
218 | * 'resubmits', on the other hand, prevents flow translation from | |
219 | * performing an extraordinarily large while still finite amount of work. | |
220 | * It counts the total number of resubmits (and a few other activities) | |
221 | * that have been executed. Returning from a resubmit does not affect this | |
222 | * counter. Thus, this limits the amount of work that a particular | |
223 | * translation can perform. Translation aborts when 'resubmits' exceeds | |
224 | * MAX_RESUBMITS (which is much larger than MAX_DEPTH). | |
225 | */ | |
790c5d26 | 226 | int depth; /* Current resubmit nesting depth. */ |
98b07853 | 227 | int resubmits; /* Total number of resubmits. */ |
5a070238 | 228 | bool in_group; /* Currently translating ofgroup, if true. */ |
029ca940 | 229 | bool in_action_set; /* Currently translating action_set, if true. */ |
98b07853 | 230 | |
4d0acc70 | 231 | uint8_t table_id; /* OpenFlow table ID where flow was found. */ |
8b1e5560 JR |
232 | ovs_be64 rule_cookie; /* Cookie of the rule being translated. */ |
233 | uint32_t orig_skb_priority; /* Priority when packet arrived. */ | |
4d0acc70 | 234 | uint32_t sflow_n_outputs; /* Number of output ports. */ |
4e022ec0 | 235 | odp_port_t sflow_odp_port; /* Output port for composing sFlow action. */ |
2031ef97 | 236 | ofp_port_t nf_output_iface; /* Output interface index for NetFlow. */ |
4d0acc70 | 237 | bool exit; /* No further actions should be processed. */ |
3d6151f3 | 238 | mirror_mask_t mirrors; /* Bitmap of associated mirrors. */ |
1356dbd1 | 239 | int mirror_snaplen; /* Max size of a mirror packet in byte. */ |
7fdb60a7 | 240 | |
1d361a81 BP |
241 | /* Freezing Translation |
242 | * ==================== | |
e672ff9b | 243 | * |
1d361a81 BP |
244 | * At some point during translation, the code may recognize the need to halt |
245 | * and checkpoint the translation in a way that it can be restarted again | |
246 | * later. We call the checkpointing process "freezing" and the restarting | |
247 | * process "thawing". | |
e672ff9b | 248 | * |
1d361a81 | 249 | * The use cases for freezing are: |
e672ff9b | 250 | * |
1d361a81 BP |
251 | * - "Recirculation", where the translation process discovers that it |
252 | * doesn't have enough information to complete translation without | |
253 | * actually executing the actions that have already been translated, | |
254 | * which provides the additionally needed information. In these | |
255 | * situations, translation freezes translation and assigns the frozen | |
256 | * data a unique "recirculation ID", which it associates with the data | |
257 | * in a table in userspace (see ofproto-dpif-rid.h). It also adds a | |
258 | * OVS_ACTION_ATTR_RECIRC action specifying that ID to the datapath | |
259 | * actions. When a packet hits that action, the datapath looks its | |
260 | * flow up again using the ID. If there's a miss, it comes back to | |
261 | * userspace, which find the recirculation table entry for the ID, | |
262 | * thaws the associated frozen data, and continues translation from | |
263 | * that point given the additional information that is now known. | |
e672ff9b | 264 | * |
1d361a81 BP |
265 | * The archetypal example is MPLS. As MPLS is implemented in |
266 | * OpenFlow, the protocol that follows the last MPLS label becomes | |
267 | * known only when that label is popped by an OpenFlow action. That | |
268 | * means that Open vSwitch can't extract the headers beyond the MPLS | |
269 | * labels until the pop action is executed. Thus, at that point | |
270 | * translation uses the recirculation process to extract the headers | |
271 | * beyond the MPLS labels. | |
e672ff9b | 272 | * |
1d361a81 BP |
273 | * (OVS also uses OVS_ACTION_ATTR_RECIRC to implement hashing for |
274 | * output to bonds. OVS pre-populates all the datapath flows for bond | |
275 | * output in the datapath, though, which means that the elaborate | |
276 | * process of coming back to userspace for a second round of | |
277 | * translation isn't needed, and so bonds don't follow the above | |
278 | * process.) | |
e672ff9b | 279 | * |
77ab5fd2 BP |
280 | * - "Continuation". A continuation is a way for an OpenFlow controller |
281 | * to interpose on a packet's traversal of the OpenFlow tables. When | |
282 | * the translation process encounters a "controller" action with the | |
283 | * "pause" flag, it freezes translation, serializes the frozen data, | |
284 | * and sends it to an OpenFlow controller. The controller then | |
285 | * examines and possibly modifies the frozen data and eventually sends | |
286 | * it back to the switch, which thaws it and continues translation. | |
e672ff9b | 287 | * |
1d361a81 BP |
288 | * The main problem of freezing translation is preserving state, so that |
289 | * when the translation is thawed later it resumes from where it left off, | |
290 | * without disruption. In particular, actions must be preserved as follows: | |
291 | * | |
292 | * - If we're freezing because an action needed more information, the | |
293 | * action that prompted it. | |
294 | * | |
295 | * - Any actions remaining to be translated within the current flow. | |
296 | * | |
297 | * - If translation was frozen within a NXAST_RESUBMIT, then any actions | |
298 | * following the resubmit action. Resubmit actions can be nested, so | |
299 | * this has to go all the way up the control stack. | |
e672ff9b JR |
300 | * |
301 | * - The OpenFlow 1.1+ action set. | |
302 | * | |
303 | * State that actions and flow table lookups can depend on, such as the | |
304 | * following, must also be preserved: | |
305 | * | |
306 | * - Metadata fields (input port, registers, OF1.1+ metadata, ...). | |
307 | * | |
1d361a81 | 308 | * - The stack used by NXAST_STACK_PUSH and NXAST_STACK_POP actions. |
e672ff9b JR |
309 | * |
310 | * - The table ID and cookie of the flow being translated at each level | |
1d361a81 BP |
311 | * of the control stack, because these can become visible through |
312 | * OFPAT_CONTROLLER actions (and other ways). | |
e672ff9b JR |
313 | * |
314 | * Translation allows for the control of this state preservation via these | |
1d361a81 BP |
315 | * members. When a need to freeze translation is identified, the |
316 | * translation process: | |
e672ff9b | 317 | * |
1d361a81 | 318 | * 1. Sets 'freezing' to true. |
e672ff9b JR |
319 | * |
320 | * 2. Sets 'exit' to true to tell later steps that we're exiting from the | |
321 | * translation process. | |
322 | * | |
1d361a81 BP |
323 | * 3. Adds an OFPACT_UNROLL_XLATE action to 'frozen_actions', and points |
324 | * frozen_actions.header to the action to make it easy to find it later. | |
325 | * This action holds the current table ID and cookie so that they can be | |
326 | * restored during a post-recirculation upcall translation. | |
e672ff9b JR |
327 | * |
328 | * 4. Adds the action that prompted recirculation and any actions following | |
1d361a81 | 329 | * it within the same flow to 'frozen_actions', so that they can be |
8a5fb3b4 | 330 | * executed during a post-recirculation upcall translation. |
e672ff9b JR |
331 | * |
332 | * 5. Returns. | |
333 | * | |
334 | * 6. The action that prompted recirculation might be nested in a stack of | |
335 | * nested "resubmit"s that have actions remaining. Each of these notices | |
1d361a81 BP |
336 | * that we're exiting and freezing and responds by adding more |
337 | * OFPACT_UNROLL_XLATE actions to 'frozen_actions', as necessary, | |
338 | * followed by any actions that were yet unprocessed. | |
e672ff9b | 339 | * |
1d361a81 BP |
340 | * If we're freezing because of recirculation, the caller generates a |
341 | * recirculation ID and associates all the state produced by this process | |
342 | * with it. For post-recirculation upcall translation, the caller passes it | |
343 | * back in for the new translation to execute. The process yielded a set of | |
344 | * ofpacts that can be translated directly, so it is not much of a special | |
345 | * case at that point. | |
e672ff9b | 346 | */ |
1d361a81 | 347 | bool freezing; |
53cc166a JR |
348 | bool recirc_update_dp_hash; /* Generated recirculation will be preceded |
349 | * by datapath HASH action to get an updated | |
350 | * dp_hash after recirculation. */ | |
351 | uint32_t dp_hash_alg; | |
352 | uint32_t dp_hash_basis; | |
1d361a81 | 353 | struct ofpbuf frozen_actions; |
77ab5fd2 | 354 | const struct ofpact_controller *pause; |
e672ff9b | 355 | |
e12ec36b SH |
356 | /* True if a packet was but is no longer MPLS (due to an MPLS pop action). |
357 | * This is a trigger for recirculation in cases where translating an action | |
358 | * or looking up a flow requires access to the fields of the packet after | |
359 | * the MPLS label stack that was originally present. */ | |
360 | bool was_mpls; | |
361 | ||
07659514 JS |
362 | /* True if conntrack has been performed on this packet during processing |
363 | * on the current bridge. This is used to determine whether conntrack | |
1d361a81 | 364 | * state from the datapath should be honored after thawing. */ |
07659514 JS |
365 | bool conntracked; |
366 | ||
9ac0aada JR |
367 | /* Pointer to an embedded NAT action in a conntrack action, or NULL. */ |
368 | struct ofpact_nat *ct_nat_action; | |
369 | ||
7fdb60a7 SH |
370 | /* OpenFlow 1.1+ action set. |
371 | * | |
372 | * 'action_set' accumulates "struct ofpact"s added by OFPACT_WRITE_ACTIONS. | |
373 | * When translation is otherwise complete, ofpacts_execute_action_set() | |
374 | * converts it to a set of "struct ofpact"s that can be translated into | |
ed9c9e3e | 375 | * datapath actions. */ |
c61f3870 | 376 | bool action_set_has_group; /* Action set contains OFPACT_GROUP? */ |
7fdb60a7 | 377 | struct ofpbuf action_set; /* Action set. */ |
fff1b9c0 JR |
378 | |
379 | enum xlate_error error; /* Translation failed. */ | |
4d0acc70 EJ |
380 | }; |
381 | ||
fff1b9c0 JR |
382 | const char *xlate_strerror(enum xlate_error error) |
383 | { | |
384 | switch (error) { | |
385 | case XLATE_OK: | |
386 | return "OK"; | |
387 | case XLATE_BRIDGE_NOT_FOUND: | |
388 | return "Bridge not found"; | |
389 | case XLATE_RECURSION_TOO_DEEP: | |
390 | return "Recursion too deep"; | |
391 | case XLATE_TOO_MANY_RESUBMITS: | |
392 | return "Too many resubmits"; | |
393 | case XLATE_STACK_TOO_DEEP: | |
394 | return "Stack too deep"; | |
395 | case XLATE_NO_RECIRCULATION_CONTEXT: | |
396 | return "No recirculation context"; | |
397 | case XLATE_RECIRCULATION_CONFLICT: | |
398 | return "Recirculation conflict"; | |
399 | case XLATE_TOO_MANY_MPLS_LABELS: | |
400 | return "Too many MPLS labels"; | |
8d8ab6c2 JG |
401 | case XLATE_INVALID_TUNNEL_METADATA: |
402 | return "Invalid tunnel metadata"; | |
fff1b9c0 JR |
403 | } |
404 | return "Unknown error"; | |
405 | } | |
406 | ||
ed9c9e3e | 407 | static void xlate_action_set(struct xlate_ctx *ctx); |
704bb0bf | 408 | static void xlate_commit_actions(struct xlate_ctx *ctx); |
ed9c9e3e | 409 | |
1d741d6d | 410 | static void |
1d361a81 | 411 | ctx_trigger_freeze(struct xlate_ctx *ctx) |
1d741d6d JR |
412 | { |
413 | ctx->exit = true; | |
1d361a81 | 414 | ctx->freezing = true; |
1d741d6d JR |
415 | } |
416 | ||
53cc166a JR |
417 | static void |
418 | ctx_trigger_recirculate_with_hash(struct xlate_ctx *ctx, uint32_t type, | |
419 | uint32_t basis) | |
420 | { | |
421 | ctx->exit = true; | |
422 | ctx->freezing = true; | |
423 | ctx->recirc_update_dp_hash = true; | |
424 | ctx->dp_hash_alg = type; | |
425 | ctx->dp_hash_basis = basis; | |
426 | } | |
427 | ||
1d741d6d | 428 | static bool |
1d361a81 | 429 | ctx_first_frozen_action(const struct xlate_ctx *ctx) |
1d741d6d | 430 | { |
1d361a81 | 431 | return !ctx->frozen_actions.size; |
e672ff9b JR |
432 | } |
433 | ||
3293cb85 | 434 | static void |
1d361a81 | 435 | ctx_cancel_freeze(struct xlate_ctx *ctx) |
3293cb85 | 436 | { |
1d361a81 BP |
437 | if (ctx->freezing) { |
438 | ctx->freezing = false; | |
53cc166a | 439 | ctx->recirc_update_dp_hash = false; |
1d361a81 BP |
440 | ofpbuf_clear(&ctx->frozen_actions); |
441 | ctx->frozen_actions.header = NULL; | |
3293cb85 BP |
442 | } |
443 | } | |
444 | ||
77ab5fd2 | 445 | static void finish_freezing(struct xlate_ctx *ctx); |
e672ff9b | 446 | |
9583bc14 EJ |
447 | /* A controller may use OFPP_NONE as the ingress port to indicate that |
448 | * it did not arrive on a "real" port. 'ofpp_none_bundle' exists for | |
449 | * when an input bundle is needed for validation (e.g., mirroring or | |
450 | * OFPP_NORMAL processing). It is not connected to an 'ofproto' or have | |
3548d242 BP |
451 | * any 'port' structs, so care must be taken when dealing with it. */ |
452 | static struct xbundle ofpp_none_bundle = { | |
453 | .name = "OFPP_NONE", | |
454 | .vlan_mode = PORT_VLAN_TRUNK | |
455 | }; | |
9583bc14 | 456 | |
55954f6e EJ |
457 | /* Node in 'xport''s 'skb_priorities' map. Used to maintain a map from |
458 | * 'priority' (the datapath's term for QoS queue) to the dscp bits which all | |
459 | * traffic egressing the 'ofport' with that priority should be marked with. */ | |
460 | struct skb_priority_to_dscp { | |
461 | struct hmap_node hmap_node; /* Node in 'ofport_dpif''s 'skb_priorities'. */ | |
462 | uint32_t skb_priority; /* Priority of this queue (see struct flow). */ | |
463 | ||
464 | uint8_t dscp; /* DSCP bits to mark outgoing traffic with. */ | |
465 | }; | |
466 | ||
84f0f298 RW |
467 | /* Xlate config contains hash maps of all bridges, bundles and ports. |
468 | * Xcfgp contains the pointer to the current xlate configuration. | |
469 | * When the main thread needs to change the configuration, it copies xcfgp to | |
470 | * new_xcfg and edits new_xcfg. This enables the use of RCU locking which | |
471 | * does not block handler and revalidator threads. */ | |
472 | struct xlate_cfg { | |
473 | struct hmap xbridges; | |
474 | struct hmap xbundles; | |
475 | struct hmap xports; | |
476 | }; | |
b1b72f2d | 477 | static OVSRCU_TYPE(struct xlate_cfg *) xcfgp = OVSRCU_INITIALIZER(NULL); |
f439f23b | 478 | static struct xlate_cfg *new_xcfg = NULL; |
46c88433 EJ |
479 | |
480 | static bool may_receive(const struct xport *, struct xlate_ctx *); | |
9583bc14 EJ |
481 | static void do_xlate_actions(const struct ofpact *, size_t ofpacts_len, |
482 | struct xlate_ctx *); | |
adcf00ba | 483 | static void xlate_normal(struct xlate_ctx *); |
6d328fa2 SH |
484 | static void xlate_table_action(struct xlate_ctx *, ofp_port_t in_port, |
485 | uint8_t table_id, bool may_packet_in, | |
2cd20955 | 486 | bool honor_table_miss, bool with_ct_orig); |
2d9b49dd BP |
487 | static bool input_vid_is_valid(const struct xlate_ctx *, |
488 | uint16_t vid, struct xbundle *); | |
46c88433 EJ |
489 | static uint16_t input_vid_to_vlan(const struct xbundle *, uint16_t vid); |
490 | static void output_normal(struct xlate_ctx *, const struct xbundle *, | |
9583bc14 | 491 | uint16_t vlan); |
e93ef1c7 JR |
492 | |
493 | /* Optional bond recirculation parameter to compose_output_action(). */ | |
494 | struct xlate_bond_recirc { | |
495 | uint32_t recirc_id; /* !0 Use recirculation instead of output. */ | |
496 | uint8_t hash_alg; /* !0 Compute hash for recirc before. */ | |
497 | uint32_t hash_basis; /* Compute hash for recirc before. */ | |
498 | }; | |
499 | ||
500 | static void compose_output_action(struct xlate_ctx *, ofp_port_t ofp_port, | |
501 | const struct xlate_bond_recirc *xr); | |
9583bc14 | 502 | |
84f0f298 RW |
503 | static struct xbridge *xbridge_lookup(struct xlate_cfg *, |
504 | const struct ofproto_dpif *); | |
290835f9 BP |
505 | static struct xbridge *xbridge_lookup_by_uuid(struct xlate_cfg *, |
506 | const struct uuid *); | |
84f0f298 RW |
507 | static struct xbundle *xbundle_lookup(struct xlate_cfg *, |
508 | const struct ofbundle *); | |
509 | static struct xport *xport_lookup(struct xlate_cfg *, | |
510 | const struct ofport_dpif *); | |
46c88433 | 511 | static struct xport *get_ofp_port(const struct xbridge *, ofp_port_t ofp_port); |
55954f6e EJ |
512 | static struct skb_priority_to_dscp *get_skb_priority(const struct xport *, |
513 | uint32_t skb_priority); | |
514 | static void clear_skb_priorities(struct xport *); | |
16194afd | 515 | static size_t count_skb_priorities(const struct xport *); |
55954f6e EJ |
516 | static bool dscp_from_skb_priority(const struct xport *, uint32_t skb_priority, |
517 | uint8_t *dscp); | |
46c88433 | 518 | |
84f0f298 RW |
519 | static void xlate_xbridge_init(struct xlate_cfg *, struct xbridge *); |
520 | static void xlate_xbundle_init(struct xlate_cfg *, struct xbundle *); | |
521 | static void xlate_xport_init(struct xlate_cfg *, struct xport *); | |
9efd308e | 522 | static void xlate_xbridge_set(struct xbridge *, struct dpif *, |
9efd308e DV |
523 | const struct mac_learning *, struct stp *, |
524 | struct rstp *, const struct mcast_snooping *, | |
525 | const struct mbridge *, | |
526 | const struct dpif_sflow *, | |
527 | const struct dpif_ipfix *, | |
2f47cdf4 | 528 | const struct netflow *, |
84f0f298 | 529 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 530 | const struct dpif_backer_support *); |
84f0f298 RW |
531 | static void xlate_xbundle_set(struct xbundle *xbundle, |
532 | enum port_vlan_mode vlan_mode, int vlan, | |
533 | unsigned long *trunks, bool use_priority_tags, | |
534 | const struct bond *bond, const struct lacp *lacp, | |
c005f976 | 535 | bool floodable, bool protected); |
84f0f298 RW |
536 | static void xlate_xport_set(struct xport *xport, odp_port_t odp_port, |
537 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 DF |
538 | const struct bfd *bfd, const struct lldp *lldp, |
539 | int stp_port_no, const struct rstp_port *rstp_port, | |
84f0f298 RW |
540 | enum ofputil_port_config config, |
541 | enum ofputil_port_state state, bool is_tunnel, | |
542 | bool may_enable); | |
543 | static void xlate_xbridge_remove(struct xlate_cfg *, struct xbridge *); | |
544 | static void xlate_xbundle_remove(struct xlate_cfg *, struct xbundle *); | |
545 | static void xlate_xport_remove(struct xlate_cfg *, struct xport *); | |
546 | static void xlate_xbridge_copy(struct xbridge *); | |
547 | static void xlate_xbundle_copy(struct xbridge *, struct xbundle *); | |
548 | static void xlate_xport_copy(struct xbridge *, struct xbundle *, | |
549 | struct xport *); | |
550 | static void xlate_xcfg_free(struct xlate_cfg *); | |
2d9b49dd BP |
551 | \f |
552 | /* Tracing helpers. */ | |
553 | ||
554 | /* If tracing is enabled in 'ctx', creates a new trace node and appends it to | |
555 | * the list of nodes maintained in ctx->xin. The new node has type 'type' and | |
556 | * its text is created from 'format' by treating it as a printf format string. | |
557 | * Returns the list of nodes embedded within the new trace node; ordinarily, | |
558 | * the calleer can ignore this, but it is useful if the caller needs to nest | |
559 | * more trace nodes within the new node. | |
560 | * | |
561 | * If tracing is not enabled, does nothing and returns NULL. */ | |
562 | static struct ovs_list * OVS_PRINTF_FORMAT(3, 4) | |
563 | xlate_report(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
564 | const char *format, ...) | |
34dd0d78 | 565 | { |
2d9b49dd BP |
566 | struct ovs_list *subtrace = NULL; |
567 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
c1b3756c | 568 | va_list args; |
c1b3756c | 569 | va_start(args, format); |
2d9b49dd BP |
570 | char *text = xvasprintf(format, args); |
571 | subtrace = &oftrace_report(ctx->xin->trace, type, text)->subs; | |
c1b3756c | 572 | va_end(args); |
2d9b49dd | 573 | free(text); |
34dd0d78 | 574 | } |
2d9b49dd | 575 | return subtrace; |
34dd0d78 | 576 | } |
84f0f298 | 577 | |
2d9b49dd BP |
578 | /* This is like xlate_report() for errors that are serious enough that we |
579 | * should log them even if we are not tracing. */ | |
580 | static void OVS_PRINTF_FORMAT(2, 3) | |
581 | xlate_report_error(const struct xlate_ctx *ctx, const char *format, ...) | |
582 | { | |
583 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
584 | if (!OVS_UNLIKELY(ctx->xin->trace) | |
585 | && (!ctx->xin->packet || VLOG_DROP_WARN(&rl))) { | |
586 | return; | |
587 | } | |
588 | ||
589 | struct ds s = DS_EMPTY_INITIALIZER; | |
590 | va_list args; | |
591 | va_start(args, format); | |
592 | ds_put_format_valist(&s, format, args); | |
593 | va_end(args); | |
594 | ||
595 | if (ctx->xin->trace) { | |
596 | oftrace_report(ctx->xin->trace, OFT_ERROR, ds_cstr(&s)); | |
597 | } else { | |
598 | ds_put_cstr(&s, " while processing "); | |
599 | flow_format(&s, &ctx->base_flow); | |
600 | ds_put_format(&s, " on bridge %s", ctx->xbridge->name); | |
601 | VLOG_WARN("%s", ds_cstr(&s)); | |
602 | } | |
603 | ds_destroy(&s); | |
604 | } | |
605 | ||
606 | /* This is like xlate_report() for messages that should be logged at debug | |
607 | * level (even if we are not tracing) because they can be valuable for | |
608 | * debugging. */ | |
609 | static void OVS_PRINTF_FORMAT(3, 4) | |
610 | xlate_report_debug(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
611 | const char *format, ...) | |
612 | { | |
613 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(30, 300); | |
614 | if (!OVS_UNLIKELY(ctx->xin->trace) | |
615 | && (!ctx->xin->packet || VLOG_DROP_DBG(&rl))) { | |
616 | return; | |
617 | } | |
618 | ||
619 | struct ds s = DS_EMPTY_INITIALIZER; | |
620 | va_list args; | |
621 | va_start(args, format); | |
622 | ds_put_format_valist(&s, format, args); | |
623 | va_end(args); | |
fff1b9c0 | 624 | |
2d9b49dd BP |
625 | if (ctx->xin->trace) { |
626 | oftrace_report(ctx->xin->trace, type, ds_cstr(&s)); | |
627 | } else { | |
628 | VLOG_DBG("bridge %s: %s", ctx->xbridge->name, ds_cstr(&s)); | |
629 | } | |
630 | ds_destroy(&s); | |
631 | } | |
fff1b9c0 | 632 | |
2d9b49dd BP |
633 | /* If tracing is enabled in 'ctx', appends a node of the given 'type' to the |
634 | * trace, whose text is 'title' followed by a formatted version of the | |
635 | * 'ofpacts_len' OpenFlow actions in 'ofpacts'. | |
636 | * | |
637 | * If tracing is not enabled, does nothing. */ | |
638 | static void | |
639 | xlate_report_actions(const struct xlate_ctx *ctx, enum oftrace_node_type type, | |
640 | const char *title, | |
d6bef3cc BP |
641 | const struct ofpact *ofpacts, size_t ofpacts_len) |
642 | { | |
2d9b49dd | 643 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
d6bef3cc | 644 | struct ds s = DS_EMPTY_INITIALIZER; |
2d9b49dd | 645 | ds_put_format(&s, "%s: ", title); |
d6bef3cc | 646 | ofpacts_format(ofpacts, ofpacts_len, &s); |
2d9b49dd | 647 | oftrace_report(ctx->xin->trace, type, ds_cstr(&s)); |
d6bef3cc BP |
648 | ds_destroy(&s); |
649 | } | |
650 | } | |
651 | ||
2d9b49dd BP |
652 | /* If tracing is enabled in 'ctx', appends a node of type OFT_DETAIL to the |
653 | * trace, whose the message is a formatted version of the OpenFlow action set. | |
654 | * 'verb' should be "was" or "is", depending on whether the action set reported | |
655 | * is the new action set or the old one. | |
656 | * | |
657 | * If tracing is not enabled, does nothing. */ | |
658 | static void | |
659 | xlate_report_action_set(const struct xlate_ctx *ctx, const char *verb) | |
660 | { | |
661 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
662 | struct ofpbuf action_list; | |
663 | ofpbuf_init(&action_list, 0); | |
664 | ofpacts_execute_action_set(&action_list, &ctx->action_set); | |
665 | if (action_list.size) { | |
666 | struct ds s = DS_EMPTY_INITIALIZER; | |
667 | ofpacts_format(action_list.data, action_list.size, &s); | |
668 | xlate_report(ctx, OFT_DETAIL, "action set %s: %s", | |
669 | verb, ds_cstr(&s)); | |
670 | ds_destroy(&s); | |
671 | } else { | |
672 | xlate_report(ctx, OFT_DETAIL, "action set %s empty", verb); | |
673 | } | |
674 | ofpbuf_uninit(&action_list); | |
675 | } | |
676 | } | |
677 | ||
678 | ||
679 | /* If tracing is enabled in 'ctx', appends a node representing 'rule' (in | |
680 | * OpenFlow table 'table_id') to the trace and makes this node the parent for | |
681 | * future trace nodes. The caller should save ctx->xin->trace before calling | |
682 | * this function, then after tracing all of the activities under the table, | |
683 | * restore its previous value. | |
684 | * | |
685 | * If tracing is not enabled, does nothing. */ | |
686 | static void | |
687 | xlate_report_table(const struct xlate_ctx *ctx, struct rule_dpif *rule, | |
688 | uint8_t table_id) | |
689 | { | |
690 | if (OVS_LIKELY(!ctx->xin->trace)) { | |
691 | return; | |
692 | } | |
693 | ||
694 | struct ds s = DS_EMPTY_INITIALIZER; | |
695 | ds_put_format(&s, "%2d. ", table_id); | |
696 | if (rule == ctx->xin->ofproto->miss_rule) { | |
697 | ds_put_cstr(&s, "No match, and a \"packet-in\" is called for."); | |
698 | } else if (rule == ctx->xin->ofproto->no_packet_in_rule) { | |
699 | ds_put_cstr(&s, "No match."); | |
700 | } else if (rule == ctx->xin->ofproto->drop_frags_rule) { | |
701 | ds_put_cstr(&s, "Packets are IP fragments and " | |
702 | "the fragment handling mode is \"drop\"."); | |
703 | } else { | |
704 | minimatch_format(&rule->up.cr.match, | |
705 | ofproto_get_tun_tab(&ctx->xin->ofproto->up), | |
706 | &s, OFP_DEFAULT_PRIORITY); | |
707 | if (ds_last(&s) != ' ') { | |
708 | ds_put_cstr(&s, ", "); | |
709 | } | |
710 | ds_put_format(&s, "priority %d", rule->up.cr.priority); | |
711 | if (rule->up.flow_cookie) { | |
712 | ds_put_format(&s, ", cookie %#"PRIx64, | |
713 | ntohll(rule->up.flow_cookie)); | |
714 | } | |
715 | } | |
716 | ctx->xin->trace = &oftrace_report(ctx->xin->trace, OFT_TABLE, | |
717 | ds_cstr(&s))->subs; | |
718 | ds_destroy(&s); | |
719 | } | |
720 | ||
721 | /* If tracing is enabled in 'ctx', adds an OFT_DETAIL trace node to 'ctx' | |
722 | * reporting the value of subfield 'sf'. | |
723 | * | |
724 | * If tracing is not enabled, does nothing. */ | |
725 | static void | |
726 | xlate_report_subfield(const struct xlate_ctx *ctx, | |
727 | const struct mf_subfield *sf) | |
728 | { | |
729 | if (OVS_UNLIKELY(ctx->xin->trace)) { | |
730 | struct ds s = DS_EMPTY_INITIALIZER; | |
731 | mf_format_subfield(sf, &s); | |
732 | ds_put_cstr(&s, " is now "); | |
733 | ||
734 | if (sf->ofs == 0 && sf->n_bits >= sf->field->n_bits) { | |
735 | union mf_value value; | |
736 | mf_get_value(sf->field, &ctx->xin->flow, &value); | |
737 | mf_format(sf->field, &value, NULL, &s); | |
738 | } else { | |
739 | union mf_subvalue cst; | |
740 | mf_read_subfield(sf, &ctx->xin->flow, &cst); | |
741 | ds_put_hex(&s, &cst, sizeof cst); | |
742 | } | |
743 | ||
744 | xlate_report(ctx, OFT_DETAIL, "%s", ds_cstr(&s)); | |
745 | ||
746 | ds_destroy(&s); | |
747 | } | |
748 | } | |
749 | \f | |
84f0f298 RW |
750 | static void |
751 | xlate_xbridge_init(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
752 | { | |
417e7e66 | 753 | ovs_list_init(&xbridge->xbundles); |
84f0f298 RW |
754 | hmap_init(&xbridge->xports); |
755 | hmap_insert(&xcfg->xbridges, &xbridge->hmap_node, | |
756 | hash_pointer(xbridge->ofproto, 0)); | |
757 | } | |
758 | ||
759 | static void | |
760 | xlate_xbundle_init(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
761 | { | |
417e7e66 BW |
762 | ovs_list_init(&xbundle->xports); |
763 | ovs_list_insert(&xbundle->xbridge->xbundles, &xbundle->list_node); | |
84f0f298 RW |
764 | hmap_insert(&xcfg->xbundles, &xbundle->hmap_node, |
765 | hash_pointer(xbundle->ofbundle, 0)); | |
766 | } | |
767 | ||
768 | static void | |
769 | xlate_xport_init(struct xlate_cfg *xcfg, struct xport *xport) | |
770 | { | |
771 | hmap_init(&xport->skb_priorities); | |
772 | hmap_insert(&xcfg->xports, &xport->hmap_node, | |
773 | hash_pointer(xport->ofport, 0)); | |
774 | hmap_insert(&xport->xbridge->xports, &xport->ofp_node, | |
775 | hash_ofp_port(xport->ofp_port)); | |
776 | } | |
777 | ||
778 | static void | |
779 | xlate_xbridge_set(struct xbridge *xbridge, | |
780 | struct dpif *dpif, | |
ec89fc6f | 781 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 782 | struct rstp *rstp, const struct mcast_snooping *ms, |
ec89fc6f | 783 | const struct mbridge *mbridge, |
46c88433 | 784 | const struct dpif_sflow *sflow, |
ce3955be | 785 | const struct dpif_ipfix *ipfix, |
2f47cdf4 | 786 | const struct netflow *netflow, |
4b97b70d | 787 | bool forward_bpdu, bool has_in_band, |
b440dd8c | 788 | const struct dpif_backer_support *support) |
46c88433 | 789 | { |
46c88433 EJ |
790 | if (xbridge->ml != ml) { |
791 | mac_learning_unref(xbridge->ml); | |
792 | xbridge->ml = mac_learning_ref(ml); | |
793 | } | |
794 | ||
6d95c4e8 FL |
795 | if (xbridge->ms != ms) { |
796 | mcast_snooping_unref(xbridge->ms); | |
797 | xbridge->ms = mcast_snooping_ref(ms); | |
798 | } | |
799 | ||
46c88433 EJ |
800 | if (xbridge->mbridge != mbridge) { |
801 | mbridge_unref(xbridge->mbridge); | |
802 | xbridge->mbridge = mbridge_ref(mbridge); | |
803 | } | |
804 | ||
805 | if (xbridge->sflow != sflow) { | |
806 | dpif_sflow_unref(xbridge->sflow); | |
807 | xbridge->sflow = dpif_sflow_ref(sflow); | |
808 | } | |
809 | ||
810 | if (xbridge->ipfix != ipfix) { | |
811 | dpif_ipfix_unref(xbridge->ipfix); | |
812 | xbridge->ipfix = dpif_ipfix_ref(ipfix); | |
813 | } | |
814 | ||
9d189a50 EJ |
815 | if (xbridge->stp != stp) { |
816 | stp_unref(xbridge->stp); | |
817 | xbridge->stp = stp_ref(stp); | |
818 | } | |
819 | ||
9efd308e DV |
820 | if (xbridge->rstp != rstp) { |
821 | rstp_unref(xbridge->rstp); | |
822 | xbridge->rstp = rstp_ref(rstp); | |
823 | } | |
824 | ||
ce3955be EJ |
825 | if (xbridge->netflow != netflow) { |
826 | netflow_unref(xbridge->netflow); | |
827 | xbridge->netflow = netflow_ref(netflow); | |
828 | } | |
829 | ||
89a8a7f0 | 830 | xbridge->dpif = dpif; |
46c88433 EJ |
831 | xbridge->forward_bpdu = forward_bpdu; |
832 | xbridge->has_in_band = has_in_band; | |
b440dd8c | 833 | xbridge->support = *support; |
46c88433 EJ |
834 | } |
835 | ||
84f0f298 RW |
836 | static void |
837 | xlate_xbundle_set(struct xbundle *xbundle, | |
838 | enum port_vlan_mode vlan_mode, int vlan, | |
839 | unsigned long *trunks, bool use_priority_tags, | |
840 | const struct bond *bond, const struct lacp *lacp, | |
c005f976 | 841 | bool floodable, bool protected) |
84f0f298 RW |
842 | { |
843 | ovs_assert(xbundle->xbridge); | |
844 | ||
845 | xbundle->vlan_mode = vlan_mode; | |
846 | xbundle->vlan = vlan; | |
847 | xbundle->trunks = trunks; | |
848 | xbundle->use_priority_tags = use_priority_tags; | |
849 | xbundle->floodable = floodable; | |
c005f976 | 850 | xbundle->protected = protected; |
84f0f298 RW |
851 | |
852 | if (xbundle->bond != bond) { | |
853 | bond_unref(xbundle->bond); | |
854 | xbundle->bond = bond_ref(bond); | |
855 | } | |
856 | ||
857 | if (xbundle->lacp != lacp) { | |
858 | lacp_unref(xbundle->lacp); | |
859 | xbundle->lacp = lacp_ref(lacp); | |
860 | } | |
861 | } | |
862 | ||
863 | static void | |
864 | xlate_xport_set(struct xport *xport, odp_port_t odp_port, | |
865 | const struct netdev *netdev, const struct cfm *cfm, | |
0477baa9 | 866 | const struct bfd *bfd, const struct lldp *lldp, int stp_port_no, |
f025bcb7 | 867 | const struct rstp_port* rstp_port, |
84f0f298 RW |
868 | enum ofputil_port_config config, enum ofputil_port_state state, |
869 | bool is_tunnel, bool may_enable) | |
870 | { | |
871 | xport->config = config; | |
872 | xport->state = state; | |
873 | xport->stp_port_no = stp_port_no; | |
874 | xport->is_tunnel = is_tunnel; | |
875 | xport->may_enable = may_enable; | |
876 | xport->odp_port = odp_port; | |
877 | ||
f025bcb7 JR |
878 | if (xport->rstp_port != rstp_port) { |
879 | rstp_port_unref(xport->rstp_port); | |
880 | xport->rstp_port = rstp_port_ref(rstp_port); | |
881 | } | |
882 | ||
84f0f298 RW |
883 | if (xport->cfm != cfm) { |
884 | cfm_unref(xport->cfm); | |
885 | xport->cfm = cfm_ref(cfm); | |
886 | } | |
887 | ||
888 | if (xport->bfd != bfd) { | |
889 | bfd_unref(xport->bfd); | |
890 | xport->bfd = bfd_ref(bfd); | |
891 | } | |
892 | ||
0477baa9 DF |
893 | if (xport->lldp != lldp) { |
894 | lldp_unref(xport->lldp); | |
895 | xport->lldp = lldp_ref(lldp); | |
896 | } | |
897 | ||
84f0f298 RW |
898 | if (xport->netdev != netdev) { |
899 | netdev_close(xport->netdev); | |
900 | xport->netdev = netdev_ref(netdev); | |
901 | } | |
902 | } | |
903 | ||
904 | static void | |
905 | xlate_xbridge_copy(struct xbridge *xbridge) | |
906 | { | |
907 | struct xbundle *xbundle; | |
908 | struct xport *xport; | |
909 | struct xbridge *new_xbridge = xzalloc(sizeof *xbridge); | |
910 | new_xbridge->ofproto = xbridge->ofproto; | |
911 | new_xbridge->name = xstrdup(xbridge->name); | |
912 | xlate_xbridge_init(new_xcfg, new_xbridge); | |
913 | ||
914 | xlate_xbridge_set(new_xbridge, | |
34dd0d78 | 915 | xbridge->dpif, xbridge->ml, xbridge->stp, |
9efd308e DV |
916 | xbridge->rstp, xbridge->ms, xbridge->mbridge, |
917 | xbridge->sflow, xbridge->ipfix, xbridge->netflow, | |
b440dd8c JS |
918 | xbridge->forward_bpdu, xbridge->has_in_band, |
919 | &xbridge->support); | |
84f0f298 RW |
920 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
921 | xlate_xbundle_copy(new_xbridge, xbundle); | |
922 | } | |
923 | ||
924 | /* Copy xports which are not part of a xbundle */ | |
925 | HMAP_FOR_EACH (xport, ofp_node, &xbridge->xports) { | |
926 | if (!xport->xbundle) { | |
927 | xlate_xport_copy(new_xbridge, NULL, xport); | |
928 | } | |
929 | } | |
930 | } | |
931 | ||
932 | static void | |
933 | xlate_xbundle_copy(struct xbridge *xbridge, struct xbundle *xbundle) | |
934 | { | |
935 | struct xport *xport; | |
936 | struct xbundle *new_xbundle = xzalloc(sizeof *xbundle); | |
937 | new_xbundle->ofbundle = xbundle->ofbundle; | |
938 | new_xbundle->xbridge = xbridge; | |
939 | new_xbundle->name = xstrdup(xbundle->name); | |
940 | xlate_xbundle_init(new_xcfg, new_xbundle); | |
941 | ||
942 | xlate_xbundle_set(new_xbundle, xbundle->vlan_mode, | |
943 | xbundle->vlan, xbundle->trunks, | |
944 | xbundle->use_priority_tags, xbundle->bond, xbundle->lacp, | |
c005f976 | 945 | xbundle->floodable, xbundle->protected); |
84f0f298 RW |
946 | LIST_FOR_EACH (xport, bundle_node, &xbundle->xports) { |
947 | xlate_xport_copy(xbridge, new_xbundle, xport); | |
948 | } | |
949 | } | |
950 | ||
951 | static void | |
952 | xlate_xport_copy(struct xbridge *xbridge, struct xbundle *xbundle, | |
953 | struct xport *xport) | |
954 | { | |
955 | struct skb_priority_to_dscp *pdscp, *new_pdscp; | |
956 | struct xport *new_xport = xzalloc(sizeof *xport); | |
957 | new_xport->ofport = xport->ofport; | |
958 | new_xport->ofp_port = xport->ofp_port; | |
959 | new_xport->xbridge = xbridge; | |
960 | xlate_xport_init(new_xcfg, new_xport); | |
961 | ||
962 | xlate_xport_set(new_xport, xport->odp_port, xport->netdev, xport->cfm, | |
0477baa9 DF |
963 | xport->bfd, xport->lldp, xport->stp_port_no, |
964 | xport->rstp_port, xport->config, xport->state, | |
965 | xport->is_tunnel, xport->may_enable); | |
84f0f298 RW |
966 | |
967 | if (xport->peer) { | |
968 | struct xport *peer = xport_lookup(new_xcfg, xport->peer->ofport); | |
969 | if (peer) { | |
970 | new_xport->peer = peer; | |
971 | new_xport->peer->peer = new_xport; | |
972 | } | |
973 | } | |
974 | ||
975 | if (xbundle) { | |
976 | new_xport->xbundle = xbundle; | |
417e7e66 | 977 | ovs_list_insert(&new_xport->xbundle->xports, &new_xport->bundle_node); |
84f0f298 RW |
978 | } |
979 | ||
980 | HMAP_FOR_EACH (pdscp, hmap_node, &xport->skb_priorities) { | |
981 | new_pdscp = xmalloc(sizeof *pdscp); | |
982 | new_pdscp->skb_priority = pdscp->skb_priority; | |
983 | new_pdscp->dscp = pdscp->dscp; | |
984 | hmap_insert(&new_xport->skb_priorities, &new_pdscp->hmap_node, | |
985 | hash_int(new_pdscp->skb_priority, 0)); | |
986 | } | |
987 | } | |
988 | ||
989 | /* Sets the current xlate configuration to new_xcfg and frees the old xlate | |
990 | * configuration in xcfgp. | |
991 | * | |
992 | * This needs to be called after editing the xlate configuration. | |
993 | * | |
994 | * Functions that edit the new xlate configuration are | |
6cd20a22 | 995 | * xlate_<ofproto/bundle/ofport>_set and xlate_<ofproto/bundle/ofport>_remove. |
84f0f298 RW |
996 | * |
997 | * A sample workflow: | |
998 | * | |
999 | * xlate_txn_start(); | |
1000 | * ... | |
1001 | * edit_xlate_configuration(); | |
1002 | * ... | |
1003 | * xlate_txn_commit(); */ | |
46c88433 | 1004 | void |
84f0f298 RW |
1005 | xlate_txn_commit(void) |
1006 | { | |
1007 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1008 | ||
1009 | ovsrcu_set(&xcfgp, new_xcfg); | |
40a9c4c2 AW |
1010 | ovsrcu_synchronize(); |
1011 | xlate_xcfg_free(xcfg); | |
84f0f298 RW |
1012 | new_xcfg = NULL; |
1013 | } | |
1014 | ||
1015 | /* Copies the current xlate configuration in xcfgp to new_xcfg. | |
1016 | * | |
1017 | * This needs to be called prior to editing the xlate configuration. */ | |
1018 | void | |
1019 | xlate_txn_start(void) | |
1020 | { | |
1021 | struct xbridge *xbridge; | |
1022 | struct xlate_cfg *xcfg; | |
1023 | ||
1024 | ovs_assert(!new_xcfg); | |
1025 | ||
1026 | new_xcfg = xmalloc(sizeof *new_xcfg); | |
1027 | hmap_init(&new_xcfg->xbridges); | |
1028 | hmap_init(&new_xcfg->xbundles); | |
1029 | hmap_init(&new_xcfg->xports); | |
1030 | ||
1031 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
1032 | if (!xcfg) { | |
1033 | return; | |
1034 | } | |
1035 | ||
1036 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
1037 | xlate_xbridge_copy(xbridge); | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | ||
1042 | static void | |
1043 | xlate_xcfg_free(struct xlate_cfg *xcfg) | |
1044 | { | |
1045 | struct xbridge *xbridge, *next_xbridge; | |
1046 | ||
1047 | if (!xcfg) { | |
1048 | return; | |
1049 | } | |
1050 | ||
1051 | HMAP_FOR_EACH_SAFE (xbridge, next_xbridge, hmap_node, &xcfg->xbridges) { | |
1052 | xlate_xbridge_remove(xcfg, xbridge); | |
1053 | } | |
1054 | ||
1055 | hmap_destroy(&xcfg->xbridges); | |
1056 | hmap_destroy(&xcfg->xbundles); | |
1057 | hmap_destroy(&xcfg->xports); | |
1058 | free(xcfg); | |
1059 | } | |
1060 | ||
1061 | void | |
1062 | xlate_ofproto_set(struct ofproto_dpif *ofproto, const char *name, | |
34dd0d78 | 1063 | struct dpif *dpif, |
84f0f298 | 1064 | const struct mac_learning *ml, struct stp *stp, |
9efd308e | 1065 | struct rstp *rstp, const struct mcast_snooping *ms, |
84f0f298 RW |
1066 | const struct mbridge *mbridge, |
1067 | const struct dpif_sflow *sflow, | |
1068 | const struct dpif_ipfix *ipfix, | |
2f47cdf4 | 1069 | const struct netflow *netflow, |
b440dd8c JS |
1070 | bool forward_bpdu, bool has_in_band, |
1071 | const struct dpif_backer_support *support) | |
84f0f298 RW |
1072 | { |
1073 | struct xbridge *xbridge; | |
1074 | ||
1075 | ovs_assert(new_xcfg); | |
1076 | ||
1077 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
1078 | if (!xbridge) { | |
1079 | xbridge = xzalloc(sizeof *xbridge); | |
1080 | xbridge->ofproto = ofproto; | |
1081 | ||
1082 | xlate_xbridge_init(new_xcfg, xbridge); | |
1083 | } | |
1084 | ||
1085 | free(xbridge->name); | |
1086 | xbridge->name = xstrdup(name); | |
1087 | ||
34dd0d78 | 1088 | xlate_xbridge_set(xbridge, dpif, ml, stp, rstp, ms, mbridge, sflow, ipfix, |
b440dd8c | 1089 | netflow, forward_bpdu, has_in_band, support); |
84f0f298 RW |
1090 | } |
1091 | ||
1092 | static void | |
1093 | xlate_xbridge_remove(struct xlate_cfg *xcfg, struct xbridge *xbridge) | |
46c88433 | 1094 | { |
46c88433 EJ |
1095 | struct xbundle *xbundle, *next_xbundle; |
1096 | struct xport *xport, *next_xport; | |
1097 | ||
1098 | if (!xbridge) { | |
1099 | return; | |
1100 | } | |
1101 | ||
1102 | HMAP_FOR_EACH_SAFE (xport, next_xport, ofp_node, &xbridge->xports) { | |
84f0f298 | 1103 | xlate_xport_remove(xcfg, xport); |
46c88433 EJ |
1104 | } |
1105 | ||
1106 | LIST_FOR_EACH_SAFE (xbundle, next_xbundle, list_node, &xbridge->xbundles) { | |
84f0f298 | 1107 | xlate_xbundle_remove(xcfg, xbundle); |
46c88433 EJ |
1108 | } |
1109 | ||
84f0f298 | 1110 | hmap_remove(&xcfg->xbridges, &xbridge->hmap_node); |
795cc5c1 | 1111 | mac_learning_unref(xbridge->ml); |
6d95c4e8 | 1112 | mcast_snooping_unref(xbridge->ms); |
795cc5c1 EJ |
1113 | mbridge_unref(xbridge->mbridge); |
1114 | dpif_sflow_unref(xbridge->sflow); | |
1115 | dpif_ipfix_unref(xbridge->ipfix); | |
1116 | stp_unref(xbridge->stp); | |
9efd308e | 1117 | rstp_unref(xbridge->rstp); |
795cc5c1 | 1118 | hmap_destroy(&xbridge->xports); |
46c88433 EJ |
1119 | free(xbridge->name); |
1120 | free(xbridge); | |
1121 | } | |
1122 | ||
84f0f298 RW |
1123 | void |
1124 | xlate_remove_ofproto(struct ofproto_dpif *ofproto) | |
1125 | { | |
1126 | struct xbridge *xbridge; | |
1127 | ||
1128 | ovs_assert(new_xcfg); | |
1129 | ||
1130 | xbridge = xbridge_lookup(new_xcfg, ofproto); | |
1131 | xlate_xbridge_remove(new_xcfg, xbridge); | |
1132 | } | |
1133 | ||
46c88433 EJ |
1134 | void |
1135 | xlate_bundle_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
1136 | const char *name, enum port_vlan_mode vlan_mode, int vlan, | |
1137 | unsigned long *trunks, bool use_priority_tags, | |
1138 | const struct bond *bond, const struct lacp *lacp, | |
c005f976 | 1139 | bool floodable, bool protected) |
46c88433 | 1140 | { |
84f0f298 | 1141 | struct xbundle *xbundle; |
46c88433 | 1142 | |
84f0f298 RW |
1143 | ovs_assert(new_xcfg); |
1144 | ||
1145 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
46c88433 EJ |
1146 | if (!xbundle) { |
1147 | xbundle = xzalloc(sizeof *xbundle); | |
1148 | xbundle->ofbundle = ofbundle; | |
84f0f298 | 1149 | xbundle->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 | 1150 | |
84f0f298 | 1151 | xlate_xbundle_init(new_xcfg, xbundle); |
46c88433 EJ |
1152 | } |
1153 | ||
46c88433 EJ |
1154 | free(xbundle->name); |
1155 | xbundle->name = xstrdup(name); | |
1156 | ||
84f0f298 | 1157 | xlate_xbundle_set(xbundle, vlan_mode, vlan, trunks, |
c005f976 | 1158 | use_priority_tags, bond, lacp, floodable, protected); |
46c88433 EJ |
1159 | } |
1160 | ||
84f0f298 RW |
1161 | static void |
1162 | xlate_xbundle_remove(struct xlate_cfg *xcfg, struct xbundle *xbundle) | |
46c88433 | 1163 | { |
5f03c983 | 1164 | struct xport *xport; |
46c88433 EJ |
1165 | |
1166 | if (!xbundle) { | |
1167 | return; | |
1168 | } | |
1169 | ||
5f03c983 | 1170 | LIST_FOR_EACH_POP (xport, bundle_node, &xbundle->xports) { |
46c88433 EJ |
1171 | xport->xbundle = NULL; |
1172 | } | |
1173 | ||
84f0f298 | 1174 | hmap_remove(&xcfg->xbundles, &xbundle->hmap_node); |
417e7e66 | 1175 | ovs_list_remove(&xbundle->list_node); |
46c88433 EJ |
1176 | bond_unref(xbundle->bond); |
1177 | lacp_unref(xbundle->lacp); | |
1178 | free(xbundle->name); | |
1179 | free(xbundle); | |
1180 | } | |
1181 | ||
84f0f298 RW |
1182 | void |
1183 | xlate_bundle_remove(struct ofbundle *ofbundle) | |
1184 | { | |
1185 | struct xbundle *xbundle; | |
1186 | ||
1187 | ovs_assert(new_xcfg); | |
1188 | ||
1189 | xbundle = xbundle_lookup(new_xcfg, ofbundle); | |
1190 | xlate_xbundle_remove(new_xcfg, xbundle); | |
1191 | } | |
1192 | ||
46c88433 EJ |
1193 | void |
1194 | xlate_ofport_set(struct ofproto_dpif *ofproto, struct ofbundle *ofbundle, | |
1195 | struct ofport_dpif *ofport, ofp_port_t ofp_port, | |
1196 | odp_port_t odp_port, const struct netdev *netdev, | |
1197 | const struct cfm *cfm, const struct bfd *bfd, | |
0477baa9 DF |
1198 | const struct lldp *lldp, struct ofport_dpif *peer, |
1199 | int stp_port_no, const struct rstp_port *rstp_port, | |
55954f6e | 1200 | const struct ofproto_port_queue *qdscp_list, size_t n_qdscp, |
dd8cd4b4 SH |
1201 | enum ofputil_port_config config, |
1202 | enum ofputil_port_state state, bool is_tunnel, | |
9d189a50 | 1203 | bool may_enable) |
46c88433 | 1204 | { |
55954f6e | 1205 | size_t i; |
84f0f298 RW |
1206 | struct xport *xport; |
1207 | ||
1208 | ovs_assert(new_xcfg); | |
46c88433 | 1209 | |
84f0f298 | 1210 | xport = xport_lookup(new_xcfg, ofport); |
46c88433 EJ |
1211 | if (!xport) { |
1212 | xport = xzalloc(sizeof *xport); | |
1213 | xport->ofport = ofport; | |
84f0f298 | 1214 | xport->xbridge = xbridge_lookup(new_xcfg, ofproto); |
46c88433 EJ |
1215 | xport->ofp_port = ofp_port; |
1216 | ||
84f0f298 | 1217 | xlate_xport_init(new_xcfg, xport); |
46c88433 EJ |
1218 | } |
1219 | ||
1220 | ovs_assert(xport->ofp_port == ofp_port); | |
1221 | ||
0477baa9 DF |
1222 | xlate_xport_set(xport, odp_port, netdev, cfm, bfd, lldp, |
1223 | stp_port_no, rstp_port, config, state, is_tunnel, | |
1224 | may_enable); | |
46c88433 EJ |
1225 | |
1226 | if (xport->peer) { | |
1227 | xport->peer->peer = NULL; | |
1228 | } | |
84f0f298 | 1229 | xport->peer = xport_lookup(new_xcfg, peer); |
46c88433 EJ |
1230 | if (xport->peer) { |
1231 | xport->peer->peer = xport; | |
1232 | } | |
1233 | ||
1234 | if (xport->xbundle) { | |
417e7e66 | 1235 | ovs_list_remove(&xport->bundle_node); |
46c88433 | 1236 | } |
84f0f298 | 1237 | xport->xbundle = xbundle_lookup(new_xcfg, ofbundle); |
46c88433 | 1238 | if (xport->xbundle) { |
417e7e66 | 1239 | ovs_list_insert(&xport->xbundle->xports, &xport->bundle_node); |
46c88433 | 1240 | } |
55954f6e EJ |
1241 | |
1242 | clear_skb_priorities(xport); | |
1243 | for (i = 0; i < n_qdscp; i++) { | |
1244 | struct skb_priority_to_dscp *pdscp; | |
1245 | uint32_t skb_priority; | |
1246 | ||
89a8a7f0 EJ |
1247 | if (dpif_queue_to_priority(xport->xbridge->dpif, qdscp_list[i].queue, |
1248 | &skb_priority)) { | |
55954f6e EJ |
1249 | continue; |
1250 | } | |
1251 | ||
1252 | pdscp = xmalloc(sizeof *pdscp); | |
1253 | pdscp->skb_priority = skb_priority; | |
1254 | pdscp->dscp = (qdscp_list[i].dscp << 2) & IP_DSCP_MASK; | |
1255 | hmap_insert(&xport->skb_priorities, &pdscp->hmap_node, | |
1256 | hash_int(pdscp->skb_priority, 0)); | |
1257 | } | |
46c88433 EJ |
1258 | } |
1259 | ||
84f0f298 RW |
1260 | static void |
1261 | xlate_xport_remove(struct xlate_cfg *xcfg, struct xport *xport) | |
46c88433 | 1262 | { |
46c88433 EJ |
1263 | if (!xport) { |
1264 | return; | |
1265 | } | |
1266 | ||
1267 | if (xport->peer) { | |
1268 | xport->peer->peer = NULL; | |
1269 | xport->peer = NULL; | |
1270 | } | |
1271 | ||
e621a12d | 1272 | if (xport->xbundle) { |
417e7e66 | 1273 | ovs_list_remove(&xport->bundle_node); |
e621a12d EJ |
1274 | } |
1275 | ||
55954f6e EJ |
1276 | clear_skb_priorities(xport); |
1277 | hmap_destroy(&xport->skb_priorities); | |
1278 | ||
84f0f298 | 1279 | hmap_remove(&xcfg->xports, &xport->hmap_node); |
46c88433 EJ |
1280 | hmap_remove(&xport->xbridge->xports, &xport->ofp_node); |
1281 | ||
1282 | netdev_close(xport->netdev); | |
f025bcb7 | 1283 | rstp_port_unref(xport->rstp_port); |
46c88433 EJ |
1284 | cfm_unref(xport->cfm); |
1285 | bfd_unref(xport->bfd); | |
0477baa9 | 1286 | lldp_unref(xport->lldp); |
46c88433 EJ |
1287 | free(xport); |
1288 | } | |
1289 | ||
84f0f298 RW |
1290 | void |
1291 | xlate_ofport_remove(struct ofport_dpif *ofport) | |
1292 | { | |
1293 | struct xport *xport; | |
1294 | ||
1295 | ovs_assert(new_xcfg); | |
1296 | ||
1297 | xport = xport_lookup(new_xcfg, ofport); | |
1298 | xlate_xport_remove(new_xcfg, xport); | |
1299 | } | |
1300 | ||
ef377a58 JR |
1301 | static struct ofproto_dpif * |
1302 | xlate_lookup_ofproto_(const struct dpif_backer *backer, const struct flow *flow, | |
1303 | ofp_port_t *ofp_in_port, const struct xport **xportp) | |
1304 | { | |
e672ff9b | 1305 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
ef377a58 | 1306 | const struct xport *xport; |
f9038ef6 | 1307 | |
e672ff9b JR |
1308 | xport = xport_lookup(xcfg, tnl_port_should_receive(flow) |
1309 | ? tnl_port_receive(flow) | |
1310 | : odp_port_to_ofport(backer, flow->in_port.odp_port)); | |
1311 | if (OVS_UNLIKELY(!xport)) { | |
1312 | return NULL; | |
ef377a58 | 1313 | } |
e672ff9b | 1314 | *xportp = xport; |
f9038ef6 | 1315 | if (ofp_in_port) { |
e672ff9b | 1316 | *ofp_in_port = xport->ofp_port; |
f9038ef6 | 1317 | } |
e672ff9b | 1318 | return xport->xbridge->ofproto; |
ef377a58 JR |
1319 | } |
1320 | ||
1321 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively) | |
1322 | * returns the corresponding struct ofproto_dpif and OpenFlow port number. */ | |
1323 | struct ofproto_dpif * | |
1324 | xlate_lookup_ofproto(const struct dpif_backer *backer, const struct flow *flow, | |
1325 | ofp_port_t *ofp_in_port) | |
1326 | { | |
1327 | const struct xport *xport; | |
1328 | ||
1329 | return xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); | |
1330 | } | |
1331 | ||
cc377352 | 1332 | /* Given a datapath and flow metadata ('backer', and 'flow' respectively), |
ef377a58 | 1333 | * optionally populates 'ofproto' with the ofproto_dpif, 'ofp_in_port' with the |
cc377352 | 1334 | * openflow in_port, and 'ipfix', 'sflow', and 'netflow' with the appropriate |
dcc2c6cd JR |
1335 | * handles for those protocols if they're enabled. Caller may use the returned |
1336 | * pointers until quiescing, for longer term use additional references must | |
1337 | * be taken. | |
8449c4d6 | 1338 | * |
f9038ef6 | 1339 | * Returns 0 if successful, ENODEV if the parsed flow has no associated ofproto. |
ef377a58 | 1340 | */ |
8449c4d6 | 1341 | int |
5c476ea3 JR |
1342 | xlate_lookup(const struct dpif_backer *backer, const struct flow *flow, |
1343 | struct ofproto_dpif **ofprotop, struct dpif_ipfix **ipfix, | |
1344 | struct dpif_sflow **sflow, struct netflow **netflow, | |
1345 | ofp_port_t *ofp_in_port) | |
8449c4d6 | 1346 | { |
ef377a58 | 1347 | struct ofproto_dpif *ofproto; |
84f0f298 | 1348 | const struct xport *xport; |
8449c4d6 | 1349 | |
ef377a58 | 1350 | ofproto = xlate_lookup_ofproto_(backer, flow, ofp_in_port, &xport); |
8449c4d6 | 1351 | |
f9038ef6 | 1352 | if (!ofproto) { |
cc377352 | 1353 | return ENODEV; |
8449c4d6 | 1354 | } |
8449c4d6 | 1355 | |
ef377a58 JR |
1356 | if (ofprotop) { |
1357 | *ofprotop = ofproto; | |
8449c4d6 EJ |
1358 | } |
1359 | ||
1dfdb9b3 | 1360 | if (ipfix) { |
f9038ef6 | 1361 | *ipfix = xport ? xport->xbridge->ipfix : NULL; |
1dfdb9b3 EJ |
1362 | } |
1363 | ||
1364 | if (sflow) { | |
f9038ef6 | 1365 | *sflow = xport ? xport->xbridge->sflow : NULL; |
1dfdb9b3 EJ |
1366 | } |
1367 | ||
1368 | if (netflow) { | |
f9038ef6 | 1369 | *netflow = xport ? xport->xbridge->netflow : NULL; |
1dfdb9b3 | 1370 | } |
f9038ef6 | 1371 | |
cc377352 | 1372 | return 0; |
8449c4d6 EJ |
1373 | } |
1374 | ||
46c88433 | 1375 | static struct xbridge * |
84f0f298 | 1376 | xbridge_lookup(struct xlate_cfg *xcfg, const struct ofproto_dpif *ofproto) |
46c88433 | 1377 | { |
84f0f298 | 1378 | struct hmap *xbridges; |
46c88433 EJ |
1379 | struct xbridge *xbridge; |
1380 | ||
84f0f298 | 1381 | if (!ofproto || !xcfg) { |
5e6af486 EJ |
1382 | return NULL; |
1383 | } | |
1384 | ||
84f0f298 RW |
1385 | xbridges = &xcfg->xbridges; |
1386 | ||
46c88433 | 1387 | HMAP_FOR_EACH_IN_BUCKET (xbridge, hmap_node, hash_pointer(ofproto, 0), |
84f0f298 | 1388 | xbridges) { |
46c88433 EJ |
1389 | if (xbridge->ofproto == ofproto) { |
1390 | return xbridge; | |
1391 | } | |
1392 | } | |
1393 | return NULL; | |
1394 | } | |
1395 | ||
290835f9 BP |
1396 | static struct xbridge * |
1397 | xbridge_lookup_by_uuid(struct xlate_cfg *xcfg, const struct uuid *uuid) | |
1398 | { | |
1399 | struct xbridge *xbridge; | |
1400 | ||
1401 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
07a3cd5c | 1402 | if (uuid_equals(&xbridge->ofproto->uuid, uuid)) { |
290835f9 BP |
1403 | return xbridge; |
1404 | } | |
1405 | } | |
1406 | return NULL; | |
1407 | } | |
1408 | ||
46c88433 | 1409 | static struct xbundle * |
84f0f298 | 1410 | xbundle_lookup(struct xlate_cfg *xcfg, const struct ofbundle *ofbundle) |
46c88433 | 1411 | { |
84f0f298 | 1412 | struct hmap *xbundles; |
46c88433 EJ |
1413 | struct xbundle *xbundle; |
1414 | ||
84f0f298 | 1415 | if (!ofbundle || !xcfg) { |
5e6af486 EJ |
1416 | return NULL; |
1417 | } | |
1418 | ||
84f0f298 RW |
1419 | xbundles = &xcfg->xbundles; |
1420 | ||
46c88433 | 1421 | HMAP_FOR_EACH_IN_BUCKET (xbundle, hmap_node, hash_pointer(ofbundle, 0), |
84f0f298 | 1422 | xbundles) { |
46c88433 EJ |
1423 | if (xbundle->ofbundle == ofbundle) { |
1424 | return xbundle; | |
1425 | } | |
1426 | } | |
1427 | return NULL; | |
1428 | } | |
1429 | ||
1430 | static struct xport * | |
84f0f298 | 1431 | xport_lookup(struct xlate_cfg *xcfg, const struct ofport_dpif *ofport) |
46c88433 | 1432 | { |
84f0f298 | 1433 | struct hmap *xports; |
46c88433 EJ |
1434 | struct xport *xport; |
1435 | ||
84f0f298 | 1436 | if (!ofport || !xcfg) { |
5e6af486 EJ |
1437 | return NULL; |
1438 | } | |
1439 | ||
84f0f298 RW |
1440 | xports = &xcfg->xports; |
1441 | ||
46c88433 | 1442 | HMAP_FOR_EACH_IN_BUCKET (xport, hmap_node, hash_pointer(ofport, 0), |
84f0f298 | 1443 | xports) { |
46c88433 EJ |
1444 | if (xport->ofport == ofport) { |
1445 | return xport; | |
1446 | } | |
1447 | } | |
1448 | return NULL; | |
1449 | } | |
1450 | ||
40085e56 EJ |
1451 | static struct stp_port * |
1452 | xport_get_stp_port(const struct xport *xport) | |
1453 | { | |
92cf817b | 1454 | return xport->xbridge->stp && xport->stp_port_no != -1 |
40085e56 EJ |
1455 | ? stp_get_port(xport->xbridge->stp, xport->stp_port_no) |
1456 | : NULL; | |
1457 | } | |
9d189a50 | 1458 | |
0d1cee12 | 1459 | static bool |
9d189a50 EJ |
1460 | xport_stp_learn_state(const struct xport *xport) |
1461 | { | |
40085e56 | 1462 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1463 | return sp |
1464 | ? stp_learn_in_state(stp_port_get_state(sp)) | |
1465 | : true; | |
9d189a50 EJ |
1466 | } |
1467 | ||
1468 | static bool | |
1469 | xport_stp_forward_state(const struct xport *xport) | |
1470 | { | |
40085e56 | 1471 | struct stp_port *sp = xport_get_stp_port(xport); |
4b5f1996 DV |
1472 | return sp |
1473 | ? stp_forward_in_state(stp_port_get_state(sp)) | |
1474 | : true; | |
9d189a50 EJ |
1475 | } |
1476 | ||
0d1cee12 | 1477 | static bool |
bacdb85a | 1478 | xport_stp_should_forward_bpdu(const struct xport *xport) |
0d1cee12 K |
1479 | { |
1480 | struct stp_port *sp = xport_get_stp_port(xport); | |
bacdb85a | 1481 | return stp_should_forward_bpdu(sp ? stp_port_get_state(sp) : STP_DISABLED); |
0d1cee12 K |
1482 | } |
1483 | ||
9d189a50 EJ |
1484 | /* Returns true if STP should process 'flow'. Sets fields in 'wc' that |
1485 | * were used to make the determination.*/ | |
1486 | static bool | |
1487 | stp_should_process_flow(const struct flow *flow, struct flow_wildcards *wc) | |
1488 | { | |
bbbca389 | 1489 | /* is_stp() also checks dl_type, but dl_type is always set in 'wc'. */ |
9d189a50 | 1490 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); |
bbbca389 | 1491 | return is_stp(flow); |
9d189a50 EJ |
1492 | } |
1493 | ||
1494 | static void | |
cf62fa4c | 1495 | stp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9d189a50 | 1496 | { |
40085e56 | 1497 | struct stp_port *sp = xport_get_stp_port(xport); |
cf62fa4c PS |
1498 | struct dp_packet payload = *packet; |
1499 | struct eth_header *eth = dp_packet_data(&payload); | |
9d189a50 EJ |
1500 | |
1501 | /* Sink packets on ports that have STP disabled when the bridge has | |
1502 | * STP enabled. */ | |
1503 | if (!sp || stp_port_get_state(sp) == STP_DISABLED) { | |
1504 | return; | |
1505 | } | |
1506 | ||
1507 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1508 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1509 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9d189a50 EJ |
1510 | } |
1511 | ||
cf62fa4c PS |
1512 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1513 | stp_received_bpdu(sp, dp_packet_data(&payload), dp_packet_size(&payload)); | |
9d189a50 EJ |
1514 | } |
1515 | } | |
1516 | ||
f025bcb7 JR |
1517 | static enum rstp_state |
1518 | xport_get_rstp_port_state(const struct xport *xport) | |
9efd308e | 1519 | { |
f025bcb7 JR |
1520 | return xport->rstp_port |
1521 | ? rstp_port_get_state(xport->rstp_port) | |
1522 | : RSTP_DISABLED; | |
9efd308e DV |
1523 | } |
1524 | ||
1525 | static bool | |
1526 | xport_rstp_learn_state(const struct xport *xport) | |
1527 | { | |
4b5f1996 DV |
1528 | return xport->xbridge->rstp && xport->rstp_port |
1529 | ? rstp_learn_in_state(xport_get_rstp_port_state(xport)) | |
1530 | : true; | |
9efd308e DV |
1531 | } |
1532 | ||
1533 | static bool | |
1534 | xport_rstp_forward_state(const struct xport *xport) | |
1535 | { | |
4b5f1996 DV |
1536 | return xport->xbridge->rstp && xport->rstp_port |
1537 | ? rstp_forward_in_state(xport_get_rstp_port_state(xport)) | |
1538 | : true; | |
9efd308e DV |
1539 | } |
1540 | ||
1541 | static bool | |
1542 | xport_rstp_should_manage_bpdu(const struct xport *xport) | |
1543 | { | |
f025bcb7 | 1544 | return rstp_should_manage_bpdu(xport_get_rstp_port_state(xport)); |
9efd308e DV |
1545 | } |
1546 | ||
1547 | static void | |
cf62fa4c | 1548 | rstp_process_packet(const struct xport *xport, const struct dp_packet *packet) |
9efd308e | 1549 | { |
cf62fa4c PS |
1550 | struct dp_packet payload = *packet; |
1551 | struct eth_header *eth = dp_packet_data(&payload); | |
9efd308e | 1552 | |
f025bcb7 JR |
1553 | /* Sink packets on ports that have no RSTP. */ |
1554 | if (!xport->rstp_port) { | |
9efd308e DV |
1555 | return; |
1556 | } | |
1557 | ||
1558 | /* Trim off padding on payload. */ | |
cf62fa4c PS |
1559 | if (dp_packet_size(&payload) > ntohs(eth->eth_type) + ETH_HEADER_LEN) { |
1560 | dp_packet_set_size(&payload, ntohs(eth->eth_type) + ETH_HEADER_LEN); | |
9efd308e DV |
1561 | } |
1562 | ||
cf62fa4c PS |
1563 | if (dp_packet_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) { |
1564 | rstp_port_received_bpdu(xport->rstp_port, dp_packet_data(&payload), | |
1565 | dp_packet_size(&payload)); | |
9efd308e DV |
1566 | } |
1567 | } | |
1568 | ||
46c88433 EJ |
1569 | static struct xport * |
1570 | get_ofp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1571 | { | |
1572 | struct xport *xport; | |
1573 | ||
1574 | HMAP_FOR_EACH_IN_BUCKET (xport, ofp_node, hash_ofp_port(ofp_port), | |
1575 | &xbridge->xports) { | |
1576 | if (xport->ofp_port == ofp_port) { | |
1577 | return xport; | |
1578 | } | |
1579 | } | |
1580 | return NULL; | |
1581 | } | |
1582 | ||
1583 | static odp_port_t | |
1584 | ofp_port_to_odp_port(const struct xbridge *xbridge, ofp_port_t ofp_port) | |
1585 | { | |
1586 | const struct xport *xport = get_ofp_port(xbridge, ofp_port); | |
1587 | return xport ? xport->odp_port : ODPP_NONE; | |
1588 | } | |
1589 | ||
dd8cd4b4 SH |
1590 | static bool |
1591 | odp_port_is_alive(const struct xlate_ctx *ctx, ofp_port_t ofp_port) | |
1592 | { | |
086fa873 BP |
1593 | struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
1594 | return xport && xport->may_enable; | |
dd8cd4b4 SH |
1595 | } |
1596 | ||
1e684d7d | 1597 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1598 | group_first_live_bucket(const struct xlate_ctx *, const struct group_dpif *, |
1599 | int depth); | |
1600 | ||
1601 | static bool | |
1602 | group_is_alive(const struct xlate_ctx *ctx, uint32_t group_id, int depth) | |
1603 | { | |
1604 | struct group_dpif *group; | |
dd8cd4b4 | 1605 | |
5d08a275 | 1606 | group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, |
1f4a8933 | 1607 | ctx->xin->tables_version, false); |
db88b35c | 1608 | if (group) { |
76973237 | 1609 | return group_first_live_bucket(ctx, group, depth) != NULL; |
dc25893e | 1610 | } |
dd8cd4b4 | 1611 | |
dc25893e | 1612 | return false; |
dd8cd4b4 SH |
1613 | } |
1614 | ||
1615 | #define MAX_LIVENESS_RECURSION 128 /* Arbitrary limit */ | |
1616 | ||
1617 | static bool | |
1618 | bucket_is_alive(const struct xlate_ctx *ctx, | |
1e684d7d | 1619 | struct ofputil_bucket *bucket, int depth) |
dd8cd4b4 SH |
1620 | { |
1621 | if (depth >= MAX_LIVENESS_RECURSION) { | |
2d9b49dd BP |
1622 | xlate_report_error(ctx, "bucket chaining exceeded %d links", |
1623 | MAX_LIVENESS_RECURSION); | |
dd8cd4b4 SH |
1624 | return false; |
1625 | } | |
1626 | ||
fdb1999b AZ |
1627 | return (!ofputil_bucket_has_liveness(bucket) |
1628 | || (bucket->watch_port != OFPP_ANY | |
1629 | && odp_port_is_alive(ctx, bucket->watch_port)) | |
1630 | || (bucket->watch_group != OFPG_ANY | |
1631 | && group_is_alive(ctx, bucket->watch_group, depth + 1))); | |
dd8cd4b4 SH |
1632 | } |
1633 | ||
1e684d7d | 1634 | static struct ofputil_bucket * |
dd8cd4b4 SH |
1635 | group_first_live_bucket(const struct xlate_ctx *ctx, |
1636 | const struct group_dpif *group, int depth) | |
1637 | { | |
1638 | struct ofputil_bucket *bucket; | |
07a3cd5c | 1639 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
dd8cd4b4 SH |
1640 | if (bucket_is_alive(ctx, bucket, depth)) { |
1641 | return bucket; | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | return NULL; | |
1646 | } | |
1647 | ||
1e684d7d | 1648 | static struct ofputil_bucket * |
fe7e5749 SH |
1649 | group_best_live_bucket(const struct xlate_ctx *ctx, |
1650 | const struct group_dpif *group, | |
1651 | uint32_t basis) | |
1652 | { | |
1e684d7d | 1653 | struct ofputil_bucket *best_bucket = NULL; |
fe7e5749 | 1654 | uint32_t best_score = 0; |
fe7e5749 | 1655 | |
1e684d7d | 1656 | struct ofputil_bucket *bucket; |
07a3cd5c | 1657 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
fe7e5749 | 1658 | if (bucket_is_alive(ctx, bucket, 0)) { |
c09cb861 LS |
1659 | uint32_t score = |
1660 | (hash_int(bucket->bucket_id, basis) & 0xffff) * bucket->weight; | |
fe7e5749 SH |
1661 | if (score >= best_score) { |
1662 | best_bucket = bucket; | |
1663 | best_score = score; | |
1664 | } | |
1665 | } | |
fe7e5749 SH |
1666 | } |
1667 | ||
1668 | return best_bucket; | |
1669 | } | |
1670 | ||
9583bc14 | 1671 | static bool |
46c88433 | 1672 | xbundle_trunks_vlan(const struct xbundle *bundle, uint16_t vlan) |
9583bc14 EJ |
1673 | { |
1674 | return (bundle->vlan_mode != PORT_VLAN_ACCESS | |
1675 | && (!bundle->trunks || bitmap_is_set(bundle->trunks, vlan))); | |
1676 | } | |
1677 | ||
1678 | static bool | |
46c88433 EJ |
1679 | xbundle_includes_vlan(const struct xbundle *xbundle, uint16_t vlan) |
1680 | { | |
1681 | return vlan == xbundle->vlan || xbundle_trunks_vlan(xbundle, vlan); | |
1682 | } | |
1683 | ||
1684 | static mirror_mask_t | |
1685 | xbundle_mirror_out(const struct xbridge *xbridge, struct xbundle *xbundle) | |
1686 | { | |
1687 | return xbundle != &ofpp_none_bundle | |
1688 | ? mirror_bundle_out(xbridge->mbridge, xbundle->ofbundle) | |
1689 | : 0; | |
1690 | } | |
1691 | ||
1692 | static mirror_mask_t | |
1693 | xbundle_mirror_src(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1694 | { |
46c88433 EJ |
1695 | return xbundle != &ofpp_none_bundle |
1696 | ? mirror_bundle_src(xbridge->mbridge, xbundle->ofbundle) | |
1697 | : 0; | |
9583bc14 EJ |
1698 | } |
1699 | ||
46c88433 EJ |
1700 | static mirror_mask_t |
1701 | xbundle_mirror_dst(const struct xbridge *xbridge, struct xbundle *xbundle) | |
9583bc14 | 1702 | { |
46c88433 EJ |
1703 | return xbundle != &ofpp_none_bundle |
1704 | ? mirror_bundle_dst(xbridge->mbridge, xbundle->ofbundle) | |
1705 | : 0; | |
1706 | } | |
1707 | ||
1708 | static struct xbundle * | |
2d9b49dd BP |
1709 | lookup_input_bundle__(const struct xbridge *xbridge, |
1710 | ofp_port_t in_port, struct xport **in_xportp) | |
46c88433 EJ |
1711 | { |
1712 | struct xport *xport; | |
9583bc14 EJ |
1713 | |
1714 | /* Find the port and bundle for the received packet. */ | |
46c88433 EJ |
1715 | xport = get_ofp_port(xbridge, in_port); |
1716 | if (in_xportp) { | |
1717 | *in_xportp = xport; | |
9583bc14 | 1718 | } |
46c88433 EJ |
1719 | if (xport && xport->xbundle) { |
1720 | return xport->xbundle; | |
9583bc14 EJ |
1721 | } |
1722 | ||
6362203b YT |
1723 | /* Special-case OFPP_NONE (OF1.0) and OFPP_CONTROLLER (OF1.1+), |
1724 | * which a controller may use as the ingress port for traffic that | |
1725 | * it is sourcing. */ | |
1726 | if (in_port == OFPP_CONTROLLER || in_port == OFPP_NONE) { | |
9583bc14 EJ |
1727 | return &ofpp_none_bundle; |
1728 | } | |
2d9b49dd BP |
1729 | return NULL; |
1730 | } | |
9583bc14 | 1731 | |
2d9b49dd BP |
1732 | static struct xbundle * |
1733 | lookup_input_bundle(const struct xlate_ctx *ctx, | |
1734 | ofp_port_t in_port, struct xport **in_xportp) | |
1735 | { | |
1736 | struct xbundle *xbundle = lookup_input_bundle__(ctx->xbridge, | |
1737 | in_port, in_xportp); | |
1738 | if (!xbundle) { | |
1739 | /* Odd. A few possible reasons here: | |
1740 | * | |
1741 | * - We deleted a port but there are still a few packets queued up | |
1742 | * from it. | |
1743 | * | |
1744 | * - Someone externally added a port (e.g. "ovs-dpctl add-if") that | |
1745 | * we don't know about. | |
1746 | * | |
1747 | * - The ofproto client didn't configure the port as part of a bundle. | |
1748 | * This is particularly likely to happen if a packet was received on | |
1749 | * the port after it was created, but before the client had a chance | |
1750 | * to configure its bundle. | |
1751 | */ | |
94783c7c | 1752 | xlate_report_error(ctx, "received packet on unknown port %"PRIu32, |
2d9b49dd | 1753 | in_port); |
9583bc14 | 1754 | } |
2d9b49dd | 1755 | return xbundle; |
9583bc14 EJ |
1756 | } |
1757 | ||
faa624b4 BP |
1758 | /* Mirrors the packet represented by 'ctx' to appropriate mirror destinations, |
1759 | * given the packet is ingressing or egressing on 'xbundle', which has ingress | |
1760 | * or egress (as appropriate) mirrors 'mirrors'. */ | |
9583bc14 | 1761 | static void |
7efbc3b7 BP |
1762 | mirror_packet(struct xlate_ctx *ctx, struct xbundle *xbundle, |
1763 | mirror_mask_t mirrors) | |
9583bc14 | 1764 | { |
faa624b4 BP |
1765 | /* Figure out what VLAN the packet is in (because mirrors can select |
1766 | * packets on basis of VLAN). */ | |
7efbc3b7 | 1767 | uint16_t vid = vlan_tci_to_vid(ctx->xin->flow.vlan_tci); |
2d9b49dd | 1768 | if (!input_vid_is_valid(ctx, vid, xbundle)) { |
9583bc14 EJ |
1769 | return; |
1770 | } | |
7efbc3b7 | 1771 | uint16_t vlan = input_vid_to_vlan(xbundle, vid); |
9583bc14 | 1772 | |
7efbc3b7 | 1773 | const struct xbridge *xbridge = ctx->xbridge; |
9583bc14 | 1774 | |
7efbc3b7 BP |
1775 | /* Don't mirror to destinations that we've already mirrored to. */ |
1776 | mirrors &= ~ctx->mirrors; | |
9583bc14 EJ |
1777 | if (!mirrors) { |
1778 | return; | |
1779 | } | |
1780 | ||
7efbc3b7 BP |
1781 | if (ctx->xin->resubmit_stats) { |
1782 | mirror_update_stats(xbridge->mbridge, mirrors, | |
1783 | ctx->xin->resubmit_stats->n_packets, | |
1784 | ctx->xin->resubmit_stats->n_bytes); | |
1785 | } | |
1786 | if (ctx->xin->xcache) { | |
1787 | struct xc_entry *entry; | |
1788 | ||
1789 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_MIRROR); | |
901a517e JR |
1790 | entry->mirror.mbridge = mbridge_ref(xbridge->mbridge); |
1791 | entry->mirror.mirrors = mirrors; | |
7efbc3b7 | 1792 | } |
9583bc14 | 1793 | |
faa624b4 BP |
1794 | /* 'mirrors' is a bit-mask of candidates for mirroring. Iterate as long as |
1795 | * some candidates remain. */ | |
9583bc14 | 1796 | while (mirrors) { |
7efbc3b7 | 1797 | const unsigned long *vlans; |
ec7ceaed EJ |
1798 | mirror_mask_t dup_mirrors; |
1799 | struct ofbundle *out; | |
ec7ceaed | 1800 | int out_vlan; |
1356dbd1 | 1801 | int snaplen; |
ec7ceaed | 1802 | |
faa624b4 | 1803 | /* Get the details of the mirror represented by the rightmost 1-bit. */ |
7efbc3b7 | 1804 | bool has_mirror = mirror_get(xbridge->mbridge, raw_ctz(mirrors), |
1356dbd1 WT |
1805 | &vlans, &dup_mirrors, |
1806 | &out, &snaplen, &out_vlan); | |
ec7ceaed EJ |
1807 | ovs_assert(has_mirror); |
1808 | ||
1356dbd1 | 1809 | |
faa624b4 BP |
1810 | /* If this mirror selects on the basis of VLAN, and it does not select |
1811 | * 'vlan', then discard this mirror and go on to the next one. */ | |
ec7ceaed | 1812 | if (vlans) { |
49a73e0c | 1813 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI | VLAN_VID_MASK); |
9583bc14 | 1814 | } |
7efbc3b7 | 1815 | if (vlans && !bitmap_is_set(vlans, vlan)) { |
9583bc14 EJ |
1816 | mirrors = zero_rightmost_1bit(mirrors); |
1817 | continue; | |
1818 | } | |
1819 | ||
faa624b4 BP |
1820 | /* Record the mirror, and the mirrors that output to the same |
1821 | * destination, so that we don't mirror to them again. This must be | |
1822 | * done now to ensure that output_normal(), below, doesn't recursively | |
1823 | * output to the same mirrors. */ | |
3d6151f3 | 1824 | ctx->mirrors |= dup_mirrors; |
1356dbd1 | 1825 | ctx->mirror_snaplen = snaplen; |
faa624b4 BP |
1826 | |
1827 | /* Send the packet to the mirror. */ | |
ec7ceaed | 1828 | if (out) { |
84f0f298 RW |
1829 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
1830 | struct xbundle *out_xbundle = xbundle_lookup(xcfg, out); | |
46c88433 EJ |
1831 | if (out_xbundle) { |
1832 | output_normal(ctx, out_xbundle, vlan); | |
1833 | } | |
ec7ceaed | 1834 | } else if (vlan != out_vlan |
7efbc3b7 | 1835 | && !eth_addr_is_reserved(ctx->xin->flow.dl_dst)) { |
46c88433 | 1836 | struct xbundle *xbundle; |
9583bc14 | 1837 | |
46c88433 EJ |
1838 | LIST_FOR_EACH (xbundle, list_node, &xbridge->xbundles) { |
1839 | if (xbundle_includes_vlan(xbundle, out_vlan) | |
1840 | && !xbundle_mirror_out(xbridge, xbundle)) { | |
1841 | output_normal(ctx, xbundle, out_vlan); | |
9583bc14 EJ |
1842 | } |
1843 | } | |
1844 | } | |
faa624b4 BP |
1845 | |
1846 | /* output_normal() could have recursively output (to different | |
1847 | * mirrors), so make sure that we don't send duplicates. */ | |
1848 | mirrors &= ~ctx->mirrors; | |
1356dbd1 | 1849 | ctx->mirror_snaplen = 0; |
9583bc14 EJ |
1850 | } |
1851 | } | |
1852 | ||
7efbc3b7 BP |
1853 | static void |
1854 | mirror_ingress_packet(struct xlate_ctx *ctx) | |
1855 | { | |
1856 | if (mbridge_has_mirrors(ctx->xbridge->mbridge)) { | |
7efbc3b7 | 1857 | struct xbundle *xbundle = lookup_input_bundle( |
2d9b49dd | 1858 | ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
7efbc3b7 BP |
1859 | if (xbundle) { |
1860 | mirror_packet(ctx, xbundle, | |
1861 | xbundle_mirror_src(ctx->xbridge, xbundle)); | |
1862 | } | |
1863 | } | |
1864 | } | |
1865 | ||
9583bc14 | 1866 | /* Given 'vid', the VID obtained from the 802.1Q header that was received as |
46c88433 | 1867 | * part of a packet (specify 0 if there was no 802.1Q header), and 'in_xbundle', |
9583bc14 EJ |
1868 | * the bundle on which the packet was received, returns the VLAN to which the |
1869 | * packet belongs. | |
1870 | * | |
1871 | * Both 'vid' and the return value are in the range 0...4095. */ | |
1872 | static uint16_t | |
46c88433 | 1873 | input_vid_to_vlan(const struct xbundle *in_xbundle, uint16_t vid) |
9583bc14 | 1874 | { |
46c88433 | 1875 | switch (in_xbundle->vlan_mode) { |
9583bc14 | 1876 | case PORT_VLAN_ACCESS: |
46c88433 | 1877 | return in_xbundle->vlan; |
9583bc14 EJ |
1878 | break; |
1879 | ||
1880 | case PORT_VLAN_TRUNK: | |
1881 | return vid; | |
1882 | ||
1883 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1884 | case PORT_VLAN_NATIVE_TAGGED: | |
46c88433 | 1885 | return vid ? vid : in_xbundle->vlan; |
9583bc14 EJ |
1886 | |
1887 | default: | |
428b2edd | 1888 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1889 | } |
1890 | } | |
1891 | ||
46c88433 | 1892 | /* Checks whether a packet with the given 'vid' may ingress on 'in_xbundle'. |
2d9b49dd | 1893 | * If so, returns true. Otherwise, returns false. |
9583bc14 EJ |
1894 | * |
1895 | * 'vid' should be the VID obtained from the 802.1Q header that was received as | |
1896 | * part of a packet (specify 0 if there was no 802.1Q header), in the range | |
1897 | * 0...4095. */ | |
1898 | static bool | |
2d9b49dd BP |
1899 | input_vid_is_valid(const struct xlate_ctx *ctx, |
1900 | uint16_t vid, struct xbundle *in_xbundle) | |
9583bc14 EJ |
1901 | { |
1902 | /* Allow any VID on the OFPP_NONE port. */ | |
46c88433 | 1903 | if (in_xbundle == &ofpp_none_bundle) { |
9583bc14 EJ |
1904 | return true; |
1905 | } | |
1906 | ||
46c88433 | 1907 | switch (in_xbundle->vlan_mode) { |
9583bc14 EJ |
1908 | case PORT_VLAN_ACCESS: |
1909 | if (vid) { | |
2d9b49dd BP |
1910 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" tagged " |
1911 | "packet received on port %s configured as VLAN " | |
1912 | "%"PRIu16" access port", vid, in_xbundle->name, | |
1913 | in_xbundle->vlan); | |
9583bc14 EJ |
1914 | return false; |
1915 | } | |
1916 | return true; | |
1917 | ||
1918 | case PORT_VLAN_NATIVE_UNTAGGED: | |
1919 | case PORT_VLAN_NATIVE_TAGGED: | |
1920 | if (!vid) { | |
1921 | /* Port must always carry its native VLAN. */ | |
1922 | return true; | |
1923 | } | |
1924 | /* Fall through. */ | |
1925 | case PORT_VLAN_TRUNK: | |
46c88433 | 1926 | if (!xbundle_includes_vlan(in_xbundle, vid)) { |
2d9b49dd BP |
1927 | xlate_report_error(ctx, "dropping VLAN %"PRIu16" packet " |
1928 | "received on port %s not configured for " | |
1929 | "trunking VLAN %"PRIu16, | |
1930 | vid, in_xbundle->name, vid); | |
9583bc14 EJ |
1931 | return false; |
1932 | } | |
1933 | return true; | |
1934 | ||
1935 | default: | |
428b2edd | 1936 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1937 | } |
1938 | ||
1939 | } | |
1940 | ||
1941 | /* Given 'vlan', the VLAN that a packet belongs to, and | |
46c88433 | 1942 | * 'out_xbundle', a bundle on which the packet is to be output, returns the VID |
9583bc14 EJ |
1943 | * that should be included in the 802.1Q header. (If the return value is 0, |
1944 | * then the 802.1Q header should only be included in the packet if there is a | |
1945 | * nonzero PCP.) | |
1946 | * | |
1947 | * Both 'vlan' and the return value are in the range 0...4095. */ | |
1948 | static uint16_t | |
46c88433 | 1949 | output_vlan_to_vid(const struct xbundle *out_xbundle, uint16_t vlan) |
9583bc14 | 1950 | { |
46c88433 | 1951 | switch (out_xbundle->vlan_mode) { |
9583bc14 EJ |
1952 | case PORT_VLAN_ACCESS: |
1953 | return 0; | |
1954 | ||
1955 | case PORT_VLAN_TRUNK: | |
1956 | case PORT_VLAN_NATIVE_TAGGED: | |
1957 | return vlan; | |
1958 | ||
1959 | case PORT_VLAN_NATIVE_UNTAGGED: | |
46c88433 | 1960 | return vlan == out_xbundle->vlan ? 0 : vlan; |
9583bc14 EJ |
1961 | |
1962 | default: | |
428b2edd | 1963 | OVS_NOT_REACHED(); |
9583bc14 EJ |
1964 | } |
1965 | } | |
1966 | ||
1967 | static void | |
46c88433 | 1968 | output_normal(struct xlate_ctx *ctx, const struct xbundle *out_xbundle, |
9583bc14 EJ |
1969 | uint16_t vlan) |
1970 | { | |
33bf9176 | 1971 | ovs_be16 *flow_tci = &ctx->xin->flow.vlan_tci; |
9583bc14 EJ |
1972 | uint16_t vid; |
1973 | ovs_be16 tci, old_tci; | |
46c88433 | 1974 | struct xport *xport; |
e93ef1c7 JR |
1975 | struct xlate_bond_recirc xr; |
1976 | bool use_recirc = false; | |
9583bc14 | 1977 | |
46c88433 | 1978 | vid = output_vlan_to_vid(out_xbundle, vlan); |
417e7e66 | 1979 | if (ovs_list_is_empty(&out_xbundle->xports)) { |
46c88433 EJ |
1980 | /* Partially configured bundle with no slaves. Drop the packet. */ |
1981 | return; | |
1982 | } else if (!out_xbundle->bond) { | |
417e7e66 | 1983 | xport = CONTAINER_OF(ovs_list_front(&out_xbundle->xports), struct xport, |
46c88433 | 1984 | bundle_node); |
9583bc14 | 1985 | } else { |
84f0f298 | 1986 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
49a73e0c | 1987 | struct flow_wildcards *wc = ctx->wc; |
84f0f298 | 1988 | struct ofport_dpif *ofport; |
adcf00ba | 1989 | |
82f9f1f5 | 1990 | if (ctx->xbridge->support.odp.recirc |
6b95d23c | 1991 | && bond_may_recirc(out_xbundle->bond)) { |
82f9f1f5 AZ |
1992 | /* To avoid unnecessary locking, bond_may_recirc() is first |
1993 | * called outside of the 'rwlock'. After acquiring the lock, | |
1994 | * bond_update_post_recirc_rules() will check again to make | |
1995 | * sure bond configuration has not been changed. | |
1996 | * | |
1997 | * In case recirculation is not actually in use, 'xr.recirc_id' | |
1998 | * will be set to '0', Since a valid 'recirc_id' can | |
1999 | * not be zero. */ | |
2000 | bond_update_post_recirc_rules(out_xbundle->bond, | |
2001 | &xr.recirc_id, | |
2002 | &xr.hash_basis); | |
2003 | if (xr.recirc_id) { | |
2004 | /* Use recirculation instead of output. */ | |
2005 | use_recirc = true; | |
e93ef1c7 | 2006 | xr.hash_alg = OVS_HASH_ALG_L4; |
54ecb5a2 AZ |
2007 | /* Recirculation does not require unmasking hash fields. */ |
2008 | wc = NULL; | |
adcf00ba AZ |
2009 | } |
2010 | } | |
46c88433 | 2011 | |
54ecb5a2 AZ |
2012 | ofport = bond_choose_output_slave(out_xbundle->bond, |
2013 | &ctx->xin->flow, wc, vid); | |
84f0f298 | 2014 | xport = xport_lookup(xcfg, ofport); |
46c88433 EJ |
2015 | |
2016 | if (!xport) { | |
9583bc14 EJ |
2017 | /* No slaves enabled, so drop packet. */ |
2018 | return; | |
2019 | } | |
d6fc5f57 | 2020 | |
e93ef1c7 | 2021 | /* If use_recirc is set, the main thread will handle stats |
b256dc52 | 2022 | * accounting for this bond. */ |
e93ef1c7 | 2023 | if (!use_recirc) { |
b256dc52 JS |
2024 | if (ctx->xin->resubmit_stats) { |
2025 | bond_account(out_xbundle->bond, &ctx->xin->flow, vid, | |
2026 | ctx->xin->resubmit_stats->n_bytes); | |
2027 | } | |
2028 | if (ctx->xin->xcache) { | |
2029 | struct xc_entry *entry; | |
2030 | struct flow *flow; | |
2031 | ||
2032 | flow = &ctx->xin->flow; | |
2033 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_BOND); | |
901a517e JR |
2034 | entry->bond.bond = bond_ref(out_xbundle->bond); |
2035 | entry->bond.flow = xmemdup(flow, sizeof *flow); | |
2036 | entry->bond.vid = vid; | |
b256dc52 | 2037 | } |
d6fc5f57 | 2038 | } |
9583bc14 EJ |
2039 | } |
2040 | ||
33bf9176 | 2041 | old_tci = *flow_tci; |
9583bc14 | 2042 | tci = htons(vid); |
46c88433 | 2043 | if (tci || out_xbundle->use_priority_tags) { |
33bf9176 | 2044 | tci |= *flow_tci & htons(VLAN_PCP_MASK); |
9583bc14 EJ |
2045 | if (tci) { |
2046 | tci |= htons(VLAN_CFI); | |
2047 | } | |
2048 | } | |
33bf9176 | 2049 | *flow_tci = tci; |
9583bc14 | 2050 | |
e93ef1c7 | 2051 | compose_output_action(ctx, xport->ofp_port, use_recirc ? &xr : NULL); |
33bf9176 | 2052 | *flow_tci = old_tci; |
9583bc14 EJ |
2053 | } |
2054 | ||
2055 | /* A VM broadcasts a gratuitous ARP to indicate that it has resumed after | |
2056 | * migration. Older Citrix-patched Linux DomU used gratuitous ARP replies to | |
2057 | * indicate this; newer upstream kernels use gratuitous ARP requests. */ | |
2058 | static bool | |
2059 | is_gratuitous_arp(const struct flow *flow, struct flow_wildcards *wc) | |
2060 | { | |
2061 | if (flow->dl_type != htons(ETH_TYPE_ARP)) { | |
2062 | return false; | |
2063 | } | |
2064 | ||
2065 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
2066 | if (!eth_addr_is_broadcast(flow->dl_dst)) { | |
2067 | return false; | |
2068 | } | |
2069 | ||
2070 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); | |
2071 | if (flow->nw_proto == ARP_OP_REPLY) { | |
2072 | return true; | |
2073 | } else if (flow->nw_proto == ARP_OP_REQUEST) { | |
2074 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); | |
2075 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2076 | ||
2077 | return flow->nw_src == flow->nw_dst; | |
2078 | } else { | |
2079 | return false; | |
2080 | } | |
2081 | } | |
2082 | ||
ff69c24a FL |
2083 | /* Determines whether packets in 'flow' within 'xbridge' should be forwarded or |
2084 | * dropped. Returns true if they may be forwarded, false if they should be | |
2085 | * dropped. | |
2086 | * | |
2087 | * 'in_port' must be the xport that corresponds to flow->in_port. | |
2088 | * 'in_port' must be part of a bundle (e.g. in_port->bundle must be nonnull). | |
2089 | * | |
2090 | * 'vlan' must be the VLAN that corresponds to flow->vlan_tci on 'in_port', as | |
2091 | * returned by input_vid_to_vlan(). It must be a valid VLAN for 'in_port', as | |
2092 | * checked by input_vid_is_valid(). | |
2093 | * | |
2094 | * May also add tags to '*tags', although the current implementation only does | |
2095 | * so in one special case. | |
2096 | */ | |
2097 | static bool | |
2098 | is_admissible(struct xlate_ctx *ctx, struct xport *in_port, | |
2099 | uint16_t vlan) | |
2100 | { | |
2101 | struct xbundle *in_xbundle = in_port->xbundle; | |
2102 | const struct xbridge *xbridge = ctx->xbridge; | |
2103 | struct flow *flow = &ctx->xin->flow; | |
2104 | ||
2105 | /* Drop frames for reserved multicast addresses | |
2106 | * only if forward_bpdu option is absent. */ | |
2107 | if (!xbridge->forward_bpdu && eth_addr_is_reserved(flow->dl_dst)) { | |
2d9b49dd BP |
2108 | xlate_report(ctx, OFT_DETAIL, |
2109 | "packet has reserved destination MAC, dropping"); | |
ff69c24a FL |
2110 | return false; |
2111 | } | |
2112 | ||
2113 | if (in_xbundle->bond) { | |
2114 | struct mac_entry *mac; | |
2115 | ||
2116 | switch (bond_check_admissibility(in_xbundle->bond, in_port->ofport, | |
2117 | flow->dl_dst)) { | |
2118 | case BV_ACCEPT: | |
2119 | break; | |
2120 | ||
2121 | case BV_DROP: | |
2d9b49dd BP |
2122 | xlate_report(ctx, OFT_DETAIL, |
2123 | "bonding refused admissibility, dropping"); | |
ff69c24a FL |
2124 | return false; |
2125 | ||
2126 | case BV_DROP_IF_MOVED: | |
2127 | ovs_rwlock_rdlock(&xbridge->ml->rwlock); | |
2128 | mac = mac_learning_lookup(xbridge->ml, flow->dl_src, vlan); | |
9d078ec2 BP |
2129 | if (mac |
2130 | && mac_entry_get_port(xbridge->ml, mac) != in_xbundle->ofbundle | |
49a73e0c | 2131 | && (!is_gratuitous_arp(flow, ctx->wc) |
9d078ec2 | 2132 | || mac_entry_is_grat_arp_locked(mac))) { |
ff69c24a | 2133 | ovs_rwlock_unlock(&xbridge->ml->rwlock); |
2d9b49dd BP |
2134 | xlate_report(ctx, OFT_DETAIL, |
2135 | "SLB bond thinks this packet looped back, " | |
ff69c24a FL |
2136 | "dropping"); |
2137 | return false; | |
2138 | } | |
2139 | ovs_rwlock_unlock(&xbridge->ml->rwlock); | |
2140 | break; | |
2141 | } | |
2142 | } | |
2143 | ||
2144 | return true; | |
2145 | } | |
2146 | ||
2d9b49dd BP |
2147 | static bool |
2148 | update_learning_table__(const struct xbridge *xbridge, | |
2149 | struct xbundle *in_xbundle, struct eth_addr dl_src, | |
2150 | int vlan, bool is_grat_arp) | |
2151 | { | |
2152 | return (in_xbundle == &ofpp_none_bundle | |
2153 | || !mac_learning_update(xbridge->ml, dl_src, vlan, | |
2154 | is_grat_arp, | |
2155 | in_xbundle->bond != NULL, | |
2156 | in_xbundle->ofbundle)); | |
2157 | } | |
2158 | ||
ee047520 | 2159 | static void |
2d9b49dd | 2160 | update_learning_table(const struct xlate_ctx *ctx, |
064799a1 JR |
2161 | struct xbundle *in_xbundle, struct eth_addr dl_src, |
2162 | int vlan, bool is_grat_arp) | |
ee047520 | 2163 | { |
2d9b49dd BP |
2164 | if (!update_learning_table__(ctx->xbridge, in_xbundle, dl_src, vlan, |
2165 | is_grat_arp)) { | |
2166 | xlate_report_debug(ctx, OFT_DETAIL, "learned that "ETH_ADDR_FMT" is " | |
2167 | "on port %s in VLAN %d", | |
2168 | ETH_ADDR_ARGS(dl_src), in_xbundle->name, vlan); | |
ee047520 | 2169 | } |
9583bc14 EJ |
2170 | } |
2171 | ||
86e2dcdd FL |
2172 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2173 | * was received on 'in_xbundle' in 'vlan' and is either Report or Query. */ | |
2174 | static void | |
2d9b49dd | 2175 | update_mcast_snooping_table4__(const struct xlate_ctx *ctx, |
06994f87 TLSC |
2176 | const struct flow *flow, |
2177 | struct mcast_snooping *ms, int vlan, | |
2178 | struct xbundle *in_xbundle, | |
2179 | const struct dp_packet *packet) | |
86e2dcdd FL |
2180 | OVS_REQ_WRLOCK(ms->rwlock) |
2181 | { | |
46445c63 | 2182 | const struct igmp_header *igmp; |
e3102e42 | 2183 | int count; |
46445c63 | 2184 | size_t offset; |
06994f87 | 2185 | ovs_be32 ip4 = flow->igmp_group_ip4; |
86e2dcdd | 2186 | |
46445c63 EC |
2187 | offset = (char *) dp_packet_l4(packet) - (char *) dp_packet_data(packet); |
2188 | igmp = dp_packet_at(packet, offset, IGMP_HEADER_LEN); | |
2189 | if (!igmp || csum(igmp, dp_packet_l4_size(packet)) != 0) { | |
2d9b49dd BP |
2190 | xlate_report_debug(ctx, OFT_DETAIL, |
2191 | "multicast snooping received bad IGMP " | |
2192 | "checksum on port %s in VLAN %d", | |
2193 | in_xbundle->name, vlan); | |
46445c63 EC |
2194 | return; |
2195 | } | |
2196 | ||
86e2dcdd FL |
2197 | switch (ntohs(flow->tp_src)) { |
2198 | case IGMP_HOST_MEMBERSHIP_REPORT: | |
2199 | case IGMPV2_HOST_MEMBERSHIP_REPORT: | |
964a4d5f | 2200 | if (mcast_snooping_add_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
2d9b49dd BP |
2201 | xlate_report_debug(ctx, OFT_DETAIL, |
2202 | "multicast snooping learned that " | |
2203 | IP_FMT" is on port %s in VLAN %d", | |
2204 | IP_ARGS(ip4), in_xbundle->name, vlan); | |
86e2dcdd FL |
2205 | } |
2206 | break; | |
2207 | case IGMP_HOST_LEAVE_MESSAGE: | |
964a4d5f | 2208 | if (mcast_snooping_leave_group4(ms, ip4, vlan, in_xbundle->ofbundle)) { |
2d9b49dd BP |
2209 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping leaving " |
2210 | IP_FMT" is on port %s in VLAN %d", | |
2211 | IP_ARGS(ip4), in_xbundle->name, vlan); | |
86e2dcdd FL |
2212 | } |
2213 | break; | |
2214 | case IGMP_HOST_MEMBERSHIP_QUERY: | |
2215 | if (flow->nw_src && mcast_snooping_add_mrouter(ms, vlan, | |
2d9b49dd BP |
2216 | in_xbundle->ofbundle)) { |
2217 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping query " | |
2218 | "from "IP_FMT" is on port %s in VLAN %d", | |
2219 | IP_ARGS(flow->nw_src), in_xbundle->name, vlan); | |
86e2dcdd FL |
2220 | } |
2221 | break; | |
e3102e42 | 2222 | case IGMPV3_HOST_MEMBERSHIP_REPORT: |
2d9b49dd BP |
2223 | count = mcast_snooping_add_report(ms, packet, vlan, |
2224 | in_xbundle->ofbundle); | |
2225 | if (count) { | |
2226 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping processed " | |
2227 | "%d addresses on port %s in VLAN %d", | |
2228 | count, in_xbundle->name, vlan); | |
e3102e42 TLSC |
2229 | } |
2230 | break; | |
86e2dcdd FL |
2231 | } |
2232 | } | |
2233 | ||
06994f87 | 2234 | static void |
2d9b49dd | 2235 | update_mcast_snooping_table6__(const struct xlate_ctx *ctx, |
06994f87 TLSC |
2236 | const struct flow *flow, |
2237 | struct mcast_snooping *ms, int vlan, | |
2238 | struct xbundle *in_xbundle, | |
2239 | const struct dp_packet *packet) | |
2240 | OVS_REQ_WRLOCK(ms->rwlock) | |
2241 | { | |
46445c63 | 2242 | const struct mld_header *mld; |
06994f87 | 2243 | int count; |
46445c63 EC |
2244 | size_t offset; |
2245 | ||
2246 | offset = (char *) dp_packet_l4(packet) - (char *) dp_packet_data(packet); | |
2247 | mld = dp_packet_at(packet, offset, MLD_HEADER_LEN); | |
2248 | ||
2249 | if (!mld || | |
2250 | packet_csum_upperlayer6(dp_packet_l3(packet), | |
2251 | mld, IPPROTO_ICMPV6, | |
2252 | dp_packet_l4_size(packet)) != 0) { | |
2d9b49dd BP |
2253 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping received " |
2254 | "bad MLD checksum on port %s in VLAN %d", | |
2255 | in_xbundle->name, vlan); | |
46445c63 EC |
2256 | return; |
2257 | } | |
06994f87 TLSC |
2258 | |
2259 | switch (ntohs(flow->tp_src)) { | |
2260 | case MLD_QUERY: | |
2261 | if (!ipv6_addr_equals(&flow->ipv6_src, &in6addr_any) | |
2262 | && mcast_snooping_add_mrouter(ms, vlan, in_xbundle->ofbundle)) { | |
2d9b49dd BP |
2263 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping query on " |
2264 | "port %s in VLAN %d", in_xbundle->name, vlan); | |
06994f87 TLSC |
2265 | } |
2266 | break; | |
2267 | case MLD_REPORT: | |
2268 | case MLD_DONE: | |
2269 | case MLD2_REPORT: | |
2270 | count = mcast_snooping_add_mld(ms, packet, vlan, in_xbundle->ofbundle); | |
2271 | if (count) { | |
2d9b49dd BP |
2272 | xlate_report_debug(ctx, OFT_DETAIL, "multicast snooping processed " |
2273 | "%d addresses on port %s in VLAN %d", | |
2274 | count, in_xbundle->name, vlan); | |
06994f87 TLSC |
2275 | } |
2276 | break; | |
2277 | } | |
2278 | } | |
2279 | ||
86e2dcdd FL |
2280 | /* Updates multicast snooping table 'ms' given that a packet matching 'flow' |
2281 | * was received on 'in_xbundle' in 'vlan'. */ | |
2282 | static void | |
2d9b49dd | 2283 | update_mcast_snooping_table(const struct xlate_ctx *ctx, |
86e2dcdd | 2284 | const struct flow *flow, int vlan, |
e3102e42 TLSC |
2285 | struct xbundle *in_xbundle, |
2286 | const struct dp_packet *packet) | |
86e2dcdd | 2287 | { |
2d9b49dd | 2288 | struct mcast_snooping *ms = ctx->xbridge->ms; |
86e2dcdd FL |
2289 | struct xlate_cfg *xcfg; |
2290 | struct xbundle *mcast_xbundle; | |
f4ae6e23 | 2291 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2292 | |
2293 | /* Don't learn the OFPP_NONE port. */ | |
2294 | if (in_xbundle == &ofpp_none_bundle) { | |
2295 | return; | |
2296 | } | |
2297 | ||
2298 | /* Don't learn from flood ports */ | |
2299 | mcast_xbundle = NULL; | |
2300 | ovs_rwlock_wrlock(&ms->rwlock); | |
2301 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2302 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2303 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2304 | if (mcast_xbundle == in_xbundle) { | |
2305 | break; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | if (!mcast_xbundle || mcast_xbundle != in_xbundle) { | |
06994f87 | 2310 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2d9b49dd | 2311 | update_mcast_snooping_table4__(ctx, flow, ms, vlan, |
06994f87 TLSC |
2312 | in_xbundle, packet); |
2313 | } else { | |
2d9b49dd | 2314 | update_mcast_snooping_table6__(ctx, flow, ms, vlan, |
06994f87 TLSC |
2315 | in_xbundle, packet); |
2316 | } | |
86e2dcdd FL |
2317 | } |
2318 | ovs_rwlock_unlock(&ms->rwlock); | |
2319 | } | |
2320 | ||
2321 | /* send the packet to ports having the multicast group learned */ | |
2322 | static void | |
2323 | xlate_normal_mcast_send_group(struct xlate_ctx *ctx, | |
2324 | struct mcast_snooping *ms OVS_UNUSED, | |
2325 | struct mcast_group *grp, | |
2326 | struct xbundle *in_xbundle, uint16_t vlan) | |
2327 | OVS_REQ_RDLOCK(ms->rwlock) | |
2328 | { | |
2329 | struct xlate_cfg *xcfg; | |
2330 | struct mcast_group_bundle *b; | |
2331 | struct xbundle *mcast_xbundle; | |
2332 | ||
2333 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2334 | LIST_FOR_EACH(b, bundle_node, &grp->bundle_lru) { | |
2335 | mcast_xbundle = xbundle_lookup(xcfg, b->port); | |
2336 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd | 2337 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast group port"); |
86e2dcdd FL |
2338 | output_normal(ctx, mcast_xbundle, vlan); |
2339 | } else if (!mcast_xbundle) { | |
2d9b49dd BP |
2340 | xlate_report(ctx, OFT_WARN, |
2341 | "mcast group port is unknown, dropping"); | |
86e2dcdd | 2342 | } else { |
2d9b49dd BP |
2343 | xlate_report(ctx, OFT_DETAIL, |
2344 | "mcast group port is input port, dropping"); | |
86e2dcdd FL |
2345 | } |
2346 | } | |
2347 | } | |
2348 | ||
2349 | /* send the packet to ports connected to multicast routers */ | |
2350 | static void | |
2351 | xlate_normal_mcast_send_mrouters(struct xlate_ctx *ctx, | |
2352 | struct mcast_snooping *ms, | |
2353 | struct xbundle *in_xbundle, uint16_t vlan) | |
2354 | OVS_REQ_RDLOCK(ms->rwlock) | |
2355 | { | |
2356 | struct xlate_cfg *xcfg; | |
2357 | struct mcast_mrouter_bundle *mrouter; | |
2358 | struct xbundle *mcast_xbundle; | |
2359 | ||
2360 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2361 | LIST_FOR_EACH(mrouter, mrouter_node, &ms->mrouter_lru) { | |
2362 | mcast_xbundle = xbundle_lookup(xcfg, mrouter->port); | |
94a881c1 RD |
2363 | if (mcast_xbundle && mcast_xbundle != in_xbundle |
2364 | && mrouter->vlan == vlan) { | |
2d9b49dd | 2365 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast router port"); |
86e2dcdd FL |
2366 | output_normal(ctx, mcast_xbundle, vlan); |
2367 | } else if (!mcast_xbundle) { | |
2d9b49dd BP |
2368 | xlate_report(ctx, OFT_WARN, |
2369 | "mcast router port is unknown, dropping"); | |
94a881c1 | 2370 | } else if (mrouter->vlan != vlan) { |
2d9b49dd BP |
2371 | xlate_report(ctx, OFT_DETAIL, |
2372 | "mcast router is on another vlan, dropping"); | |
86e2dcdd | 2373 | } else { |
2d9b49dd BP |
2374 | xlate_report(ctx, OFT_DETAIL, |
2375 | "mcast router port is input port, dropping"); | |
86e2dcdd FL |
2376 | } |
2377 | } | |
2378 | } | |
2379 | ||
2380 | /* send the packet to ports flagged to be flooded */ | |
2381 | static void | |
2382 | xlate_normal_mcast_send_fports(struct xlate_ctx *ctx, | |
2383 | struct mcast_snooping *ms, | |
2384 | struct xbundle *in_xbundle, uint16_t vlan) | |
2385 | OVS_REQ_RDLOCK(ms->rwlock) | |
2386 | { | |
2387 | struct xlate_cfg *xcfg; | |
f4ae6e23 | 2388 | struct mcast_port_bundle *fport; |
86e2dcdd FL |
2389 | struct xbundle *mcast_xbundle; |
2390 | ||
2391 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
f4ae6e23 | 2392 | LIST_FOR_EACH(fport, node, &ms->fport_list) { |
86e2dcdd FL |
2393 | mcast_xbundle = xbundle_lookup(xcfg, fport->port); |
2394 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd | 2395 | xlate_report(ctx, OFT_DETAIL, "forwarding to mcast flood port"); |
86e2dcdd FL |
2396 | output_normal(ctx, mcast_xbundle, vlan); |
2397 | } else if (!mcast_xbundle) { | |
2d9b49dd BP |
2398 | xlate_report(ctx, OFT_WARN, |
2399 | "mcast flood port is unknown, dropping"); | |
86e2dcdd | 2400 | } else { |
2d9b49dd BP |
2401 | xlate_report(ctx, OFT_DETAIL, |
2402 | "mcast flood port is input port, dropping"); | |
86e2dcdd FL |
2403 | } |
2404 | } | |
2405 | } | |
2406 | ||
8e04a33f FL |
2407 | /* forward the Reports to configured ports */ |
2408 | static void | |
2409 | xlate_normal_mcast_send_rports(struct xlate_ctx *ctx, | |
2410 | struct mcast_snooping *ms, | |
2411 | struct xbundle *in_xbundle, uint16_t vlan) | |
2412 | OVS_REQ_RDLOCK(ms->rwlock) | |
2413 | { | |
2414 | struct xlate_cfg *xcfg; | |
2415 | struct mcast_port_bundle *rport; | |
2416 | struct xbundle *mcast_xbundle; | |
2417 | ||
2418 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2419 | LIST_FOR_EACH(rport, node, &ms->rport_list) { | |
2420 | mcast_xbundle = xbundle_lookup(xcfg, rport->port); | |
2421 | if (mcast_xbundle && mcast_xbundle != in_xbundle) { | |
2d9b49dd BP |
2422 | xlate_report(ctx, OFT_DETAIL, |
2423 | "forwarding report to mcast flagged port"); | |
8e04a33f FL |
2424 | output_normal(ctx, mcast_xbundle, vlan); |
2425 | } else if (!mcast_xbundle) { | |
2d9b49dd BP |
2426 | xlate_report(ctx, OFT_WARN, |
2427 | "mcast port is unknown, dropping the report"); | |
8e04a33f | 2428 | } else { |
2d9b49dd BP |
2429 | xlate_report(ctx, OFT_DETAIL, |
2430 | "mcast port is input port, dropping the Report"); | |
8e04a33f FL |
2431 | } |
2432 | } | |
2433 | } | |
2434 | ||
682800a4 FL |
2435 | static void |
2436 | xlate_normal_flood(struct xlate_ctx *ctx, struct xbundle *in_xbundle, | |
2437 | uint16_t vlan) | |
2438 | { | |
2439 | struct xbundle *xbundle; | |
2440 | ||
2441 | LIST_FOR_EACH (xbundle, list_node, &ctx->xbridge->xbundles) { | |
2442 | if (xbundle != in_xbundle | |
2443 | && xbundle_includes_vlan(xbundle, vlan) | |
2444 | && xbundle->floodable | |
2445 | && !xbundle_mirror_out(ctx->xbridge, xbundle)) { | |
2446 | output_normal(ctx, xbundle, vlan); | |
2447 | } | |
2448 | } | |
2031ef97 | 2449 | ctx->nf_output_iface = NF_OUT_FLOOD; |
682800a4 FL |
2450 | } |
2451 | ||
a75636c8 BP |
2452 | static bool |
2453 | is_ip_local_multicast(const struct flow *flow, struct flow_wildcards *wc) | |
2454 | { | |
2455 | if (flow->dl_type == htons(ETH_TYPE_IP)) { | |
2456 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); | |
2457 | return ip_is_local_multicast(flow->nw_dst); | |
2458 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2459 | memset(&wc->masks.ipv6_dst, 0xff, sizeof wc->masks.ipv6_dst); | |
2460 | return ipv6_is_all_hosts(&flow->ipv6_dst); | |
2461 | } else { | |
2462 | return false; | |
2463 | } | |
2464 | } | |
2465 | ||
9583bc14 EJ |
2466 | static void |
2467 | xlate_normal(struct xlate_ctx *ctx) | |
2468 | { | |
49a73e0c | 2469 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 2470 | struct flow *flow = &ctx->xin->flow; |
46c88433 EJ |
2471 | struct xbundle *in_xbundle; |
2472 | struct xport *in_port; | |
9583bc14 | 2473 | struct mac_entry *mac; |
d6d5bbc9 | 2474 | void *mac_port; |
9583bc14 EJ |
2475 | uint16_t vlan; |
2476 | uint16_t vid; | |
2477 | ||
33bf9176 BP |
2478 | memset(&wc->masks.dl_src, 0xff, sizeof wc->masks.dl_src); |
2479 | memset(&wc->masks.dl_dst, 0xff, sizeof wc->masks.dl_dst); | |
1dd35f8a | 2480 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
9583bc14 | 2481 | |
2d9b49dd | 2482 | in_xbundle = lookup_input_bundle(ctx, flow->in_port.ofp_port, &in_port); |
46c88433 | 2483 | if (!in_xbundle) { |
2d9b49dd | 2484 | xlate_report(ctx, OFT_WARN, "no input bundle, dropping"); |
9583bc14 EJ |
2485 | return; |
2486 | } | |
2487 | ||
2488 | /* Drop malformed frames. */ | |
33bf9176 BP |
2489 | if (flow->dl_type == htons(ETH_TYPE_VLAN) && |
2490 | !(flow->vlan_tci & htons(VLAN_CFI))) { | |
9583bc14 | 2491 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
2492 | xlate_report_error(ctx, "dropping packet with partial " |
2493 | "VLAN tag received on port %s", | |
2494 | in_xbundle->name); | |
9583bc14 | 2495 | } |
2d9b49dd | 2496 | xlate_report(ctx, OFT_WARN, "partial VLAN tag, dropping"); |
9583bc14 EJ |
2497 | return; |
2498 | } | |
2499 | ||
2500 | /* Drop frames on bundles reserved for mirroring. */ | |
46c88433 | 2501 | if (xbundle_mirror_out(ctx->xbridge, in_xbundle)) { |
9583bc14 | 2502 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
2503 | xlate_report_error(ctx, "dropping packet received on port %s, " |
2504 | "which is reserved exclusively for mirroring", | |
2505 | in_xbundle->name); | |
9583bc14 | 2506 | } |
2d9b49dd BP |
2507 | xlate_report(ctx, OFT_WARN, |
2508 | "input port is mirror output port, dropping"); | |
9583bc14 EJ |
2509 | return; |
2510 | } | |
2511 | ||
2512 | /* Check VLAN. */ | |
33bf9176 | 2513 | vid = vlan_tci_to_vid(flow->vlan_tci); |
2d9b49dd BP |
2514 | if (!input_vid_is_valid(ctx, vid, in_xbundle)) { |
2515 | xlate_report(ctx, OFT_WARN, | |
2516 | "disallowed VLAN VID for this input port, dropping"); | |
9583bc14 EJ |
2517 | return; |
2518 | } | |
46c88433 | 2519 | vlan = input_vid_to_vlan(in_xbundle, vid); |
9583bc14 EJ |
2520 | |
2521 | /* Check other admissibility requirements. */ | |
2522 | if (in_port && !is_admissible(ctx, in_port, vlan)) { | |
2523 | return; | |
2524 | } | |
2525 | ||
2526 | /* Learn source MAC. */ | |
064799a1 | 2527 | bool is_grat_arp = is_gratuitous_arp(flow, wc); |
df70a773 | 2528 | if (ctx->xin->allow_side_effects) { |
2d9b49dd | 2529 | update_learning_table(ctx, in_xbundle, flow->dl_src, vlan, |
064799a1 | 2530 | is_grat_arp); |
9583bc14 | 2531 | } |
064799a1 | 2532 | if (ctx->xin->xcache && in_xbundle != &ofpp_none_bundle) { |
b256dc52 JS |
2533 | struct xc_entry *entry; |
2534 | ||
064799a1 | 2535 | /* Save just enough info to update mac learning table later. */ |
b256dc52 | 2536 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NORMAL); |
901a517e JR |
2537 | entry->normal.ofproto = ctx->xbridge->ofproto; |
2538 | entry->normal.in_port = flow->in_port.ofp_port; | |
2539 | entry->normal.dl_src = flow->dl_src; | |
2540 | entry->normal.vlan = vlan; | |
2541 | entry->normal.is_gratuitous_arp = is_grat_arp; | |
b256dc52 | 2542 | } |
9583bc14 EJ |
2543 | |
2544 | /* Determine output bundle. */ | |
86e2dcdd FL |
2545 | if (mcast_snooping_enabled(ctx->xbridge->ms) |
2546 | && !eth_addr_is_broadcast(flow->dl_dst) | |
2547 | && eth_addr_is_multicast(flow->dl_dst) | |
06994f87 | 2548 | && is_ip_any(flow)) { |
86e2dcdd | 2549 | struct mcast_snooping *ms = ctx->xbridge->ms; |
06994f87 | 2550 | struct mcast_group *grp = NULL; |
86e2dcdd | 2551 | |
a75636c8 BP |
2552 | if (is_igmp(flow, wc)) { |
2553 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
d29f137b TLSC |
2554 | if (mcast_snooping_is_membership(flow->tp_src) || |
2555 | mcast_snooping_is_query(flow->tp_src)) { | |
df70a773 | 2556 | if (ctx->xin->allow_side_effects && ctx->xin->packet) { |
2d9b49dd | 2557 | update_mcast_snooping_table(ctx, flow, vlan, |
e3102e42 | 2558 | in_xbundle, ctx->xin->packet); |
d29f137b TLSC |
2559 | } |
2560 | /* | |
2561 | * IGMP packets need to take the slow path, in order to be | |
2562 | * processed for mdb updates. That will prevent expires | |
2563 | * firing off even after hosts have sent reports. | |
2564 | */ | |
2565 | ctx->xout->slow |= SLOW_ACTION; | |
86e2dcdd | 2566 | } |
d6d5bbc9 | 2567 | |
86e2dcdd FL |
2568 | if (mcast_snooping_is_membership(flow->tp_src)) { |
2569 | ovs_rwlock_rdlock(&ms->rwlock); | |
2570 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
8e04a33f FL |
2571 | /* RFC4541: section 2.1.1, item 1: A snooping switch should |
2572 | * forward IGMP Membership Reports only to those ports where | |
2573 | * multicast routers are attached. Alternatively stated: a | |
2574 | * snooping switch should not forward IGMP Membership Reports | |
2575 | * to ports on which only hosts are attached. | |
2576 | * An administrative control may be provided to override this | |
2577 | * restriction, allowing the report messages to be flooded to | |
2578 | * other ports. */ | |
2579 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
86e2dcdd FL |
2580 | ovs_rwlock_unlock(&ms->rwlock); |
2581 | } else { | |
2d9b49dd | 2582 | xlate_report(ctx, OFT_DETAIL, "multicast traffic, flooding"); |
86e2dcdd FL |
2583 | xlate_normal_flood(ctx, in_xbundle, vlan); |
2584 | } | |
2585 | return; | |
a75636c8 | 2586 | } else if (is_mld(flow, wc)) { |
06994f87 | 2587 | ctx->xout->slow |= SLOW_ACTION; |
df70a773 | 2588 | if (ctx->xin->allow_side_effects && ctx->xin->packet) { |
2d9b49dd | 2589 | update_mcast_snooping_table(ctx, flow, vlan, |
06994f87 TLSC |
2590 | in_xbundle, ctx->xin->packet); |
2591 | } | |
a75636c8 | 2592 | if (is_mld_report(flow, wc)) { |
06994f87 TLSC |
2593 | ovs_rwlock_rdlock(&ms->rwlock); |
2594 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2595 | xlate_normal_mcast_send_rports(ctx, ms, in_xbundle, vlan); | |
2596 | ovs_rwlock_unlock(&ms->rwlock); | |
2597 | } else { | |
2d9b49dd | 2598 | xlate_report(ctx, OFT_DETAIL, "MLD query, flooding"); |
06994f87 TLSC |
2599 | xlate_normal_flood(ctx, in_xbundle, vlan); |
2600 | } | |
86e2dcdd | 2601 | } else { |
a75636c8 | 2602 | if (is_ip_local_multicast(flow, wc)) { |
86e2dcdd FL |
2603 | /* RFC4541: section 2.1.2, item 2: Packets with a dst IP |
2604 | * address in the 224.0.0.x range which are not IGMP must | |
2605 | * be forwarded on all ports */ | |
2d9b49dd BP |
2606 | xlate_report(ctx, OFT_DETAIL, |
2607 | "RFC4541: section 2.1.2, item 2, flooding"); | |
86e2dcdd FL |
2608 | xlate_normal_flood(ctx, in_xbundle, vlan); |
2609 | return; | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | /* forwarding to group base ports */ | |
2614 | ovs_rwlock_rdlock(&ms->rwlock); | |
06994f87 TLSC |
2615 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
2616 | grp = mcast_snooping_lookup4(ms, flow->nw_dst, vlan); | |
2617 | } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
2618 | grp = mcast_snooping_lookup(ms, &flow->ipv6_dst, vlan); | |
2619 | } | |
86e2dcdd FL |
2620 | if (grp) { |
2621 | xlate_normal_mcast_send_group(ctx, ms, grp, in_xbundle, vlan); | |
2622 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2623 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
9583bc14 | 2624 | } else { |
86e2dcdd | 2625 | if (mcast_snooping_flood_unreg(ms)) { |
2d9b49dd BP |
2626 | xlate_report(ctx, OFT_DETAIL, |
2627 | "unregistered multicast, flooding"); | |
86e2dcdd FL |
2628 | xlate_normal_flood(ctx, in_xbundle, vlan); |
2629 | } else { | |
2630 | xlate_normal_mcast_send_mrouters(ctx, ms, in_xbundle, vlan); | |
2631 | xlate_normal_mcast_send_fports(ctx, ms, in_xbundle, vlan); | |
2632 | } | |
9583bc14 | 2633 | } |
86e2dcdd | 2634 | ovs_rwlock_unlock(&ms->rwlock); |
9583bc14 | 2635 | } else { |
86e2dcdd FL |
2636 | ovs_rwlock_rdlock(&ctx->xbridge->ml->rwlock); |
2637 | mac = mac_learning_lookup(ctx->xbridge->ml, flow->dl_dst, vlan); | |
9d078ec2 | 2638 | mac_port = mac ? mac_entry_get_port(ctx->xbridge->ml, mac) : NULL; |
86e2dcdd FL |
2639 | ovs_rwlock_unlock(&ctx->xbridge->ml->rwlock); |
2640 | ||
2641 | if (mac_port) { | |
2642 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2643 | struct xbundle *mac_xbundle = xbundle_lookup(xcfg, mac_port); | |
2644 | if (mac_xbundle && mac_xbundle != in_xbundle) { | |
2d9b49dd | 2645 | xlate_report(ctx, OFT_DETAIL, "forwarding to learned port"); |
86e2dcdd FL |
2646 | output_normal(ctx, mac_xbundle, vlan); |
2647 | } else if (!mac_xbundle) { | |
2d9b49dd BP |
2648 | xlate_report(ctx, OFT_WARN, |
2649 | "learned port is unknown, dropping"); | |
86e2dcdd | 2650 | } else { |
2d9b49dd BP |
2651 | xlate_report(ctx, OFT_DETAIL, |
2652 | "learned port is input port, dropping"); | |
86e2dcdd FL |
2653 | } |
2654 | } else { | |
2d9b49dd BP |
2655 | xlate_report(ctx, OFT_DETAIL, |
2656 | "no learned MAC for destination, flooding"); | |
86e2dcdd FL |
2657 | xlate_normal_flood(ctx, in_xbundle, vlan); |
2658 | } | |
9583bc14 EJ |
2659 | } |
2660 | } | |
2661 | ||
a6092018 BP |
2662 | /* Appends a "sample" action for sFlow or IPFIX to 'ctx->odp_actions'. The |
2663 | * 'probability' is the number of packets out of UINT32_MAX to sample. The | |
2664 | * 'cookie' (of length 'cookie_size' bytes) is passed back in the callback for | |
2665 | * each sampled packet. 'tunnel_out_port', if not ODPP_NONE, is added as the | |
2666 | * OVS_USERSPACE_ATTR_EGRESS_TUN_PORT attribute. If 'include_actions', an | |
f69f713b BY |
2667 | * OVS_USERSPACE_ATTR_ACTIONS attribute is added. If 'emit_set_tunnel', |
2668 | * sample(sampling_port=1) would translate into datapath sample action | |
2669 | * set(tunnel(...)), sample(...) and it is used for sampling egress tunnel | |
2670 | * information. | |
9583bc14 EJ |
2671 | */ |
2672 | static size_t | |
a6092018 | 2673 | compose_sample_action(struct xlate_ctx *ctx, |
9583bc14 EJ |
2674 | const uint32_t probability, |
2675 | const union user_action_cookie *cookie, | |
8b7ea2d4 | 2676 | const size_t cookie_size, |
7321bda3 NM |
2677 | const odp_port_t tunnel_out_port, |
2678 | bool include_actions) | |
9583bc14 | 2679 | { |
b97f2c3a BY |
2680 | if (probability == 0) { |
2681 | /* No need to generate sampling or the inner action. */ | |
2682 | return 0; | |
2683 | } | |
2684 | ||
72471622 BY |
2685 | /* No need to generate sample action for 100% sampling rate. */ |
2686 | bool is_sample = probability < UINT32_MAX; | |
2687 | size_t sample_offset, actions_offset; | |
2688 | if (is_sample) { | |
2689 | sample_offset = nl_msg_start_nested(ctx->odp_actions, | |
2690 | OVS_ACTION_ATTR_SAMPLE); | |
2691 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
2692 | probability); | |
2693 | actions_offset = nl_msg_start_nested(ctx->odp_actions, | |
2694 | OVS_SAMPLE_ATTR_ACTIONS); | |
2695 | } | |
9583bc14 | 2696 | |
a6092018 BP |
2697 | odp_port_t odp_port = ofp_port_to_odp_port( |
2698 | ctx->xbridge, ctx->xin->flow.in_port.ofp_port); | |
2699 | uint32_t pid = dpif_port_get_pid(ctx->xbridge->dpif, odp_port, | |
2700 | flow_hash_5tuple(&ctx->xin->flow, 0)); | |
2701 | int cookie_offset = odp_put_userspace_action(pid, cookie, cookie_size, | |
2702 | tunnel_out_port, | |
2703 | include_actions, | |
2704 | ctx->odp_actions); | |
89a8a7f0 | 2705 | |
72471622 BY |
2706 | if (is_sample) { |
2707 | nl_msg_end_nested(ctx->odp_actions, actions_offset); | |
2708 | nl_msg_end_nested(ctx->odp_actions, sample_offset); | |
2709 | } | |
9583bc14 | 2710 | |
9583bc14 EJ |
2711 | return cookie_offset; |
2712 | } | |
2713 | ||
a6092018 BP |
2714 | /* If sFLow is not enabled, returns 0 without doing anything. |
2715 | * | |
2716 | * If sFlow is enabled, appends a template "sample" action to the ODP actions | |
2717 | * in 'ctx'. This action is a template because some of the information needed | |
2718 | * to fill it out is not available until flow translation is complete. In this | |
2719 | * case, this functions returns an offset, which is always nonzero, to pass | |
2720 | * later to fix_sflow_action() to fill in the rest of the template. */ | |
9583bc14 | 2721 | static size_t |
a6092018 | 2722 | compose_sflow_action(struct xlate_ctx *ctx) |
9583bc14 | 2723 | { |
a6092018 BP |
2724 | struct dpif_sflow *sflow = ctx->xbridge->sflow; |
2725 | if (!sflow || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
9583bc14 EJ |
2726 | return 0; |
2727 | } | |
2728 | ||
a6092018 BP |
2729 | union user_action_cookie cookie = { .type = USER_ACTION_COOKIE_SFLOW }; |
2730 | return compose_sample_action(ctx, dpif_sflow_get_probability(sflow), | |
7321bda3 NM |
2731 | &cookie, sizeof cookie.sflow, ODPP_NONE, |
2732 | true); | |
9583bc14 EJ |
2733 | } |
2734 | ||
f69f713b BY |
2735 | /* If flow IPFIX is enabled, make sure IPFIX flow sample action |
2736 | * at egress point of tunnel port is just in front of corresponding | |
2737 | * output action. If bridge IPFIX is enabled, this appends an IPFIX | |
2738 | * sample action to 'ctx->odp_actions'. */ | |
9583bc14 | 2739 | static void |
a6092018 | 2740 | compose_ipfix_action(struct xlate_ctx *ctx, odp_port_t output_odp_port) |
9583bc14 | 2741 | { |
a6092018 | 2742 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; |
8b7ea2d4 | 2743 | odp_port_t tunnel_out_port = ODPP_NONE; |
9583bc14 | 2744 | |
a6092018 | 2745 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { |
9583bc14 EJ |
2746 | return; |
2747 | } | |
2748 | ||
8b7ea2d4 WZ |
2749 | /* For input case, output_odp_port is ODPP_NONE, which is an invalid port |
2750 | * number. */ | |
2751 | if (output_odp_port == ODPP_NONE && | |
a6092018 | 2752 | !dpif_ipfix_get_bridge_exporter_input_sampling(ipfix)) { |
8b7ea2d4 WZ |
2753 | return; |
2754 | } | |
2755 | ||
f69f713b | 2756 | /* For output case, output_odp_port is valid. */ |
8b7ea2d4 | 2757 | if (output_odp_port != ODPP_NONE) { |
a6092018 | 2758 | if (!dpif_ipfix_get_bridge_exporter_output_sampling(ipfix)) { |
8b7ea2d4 WZ |
2759 | return; |
2760 | } | |
2761 | /* If tunnel sampling is enabled, put an additional option attribute: | |
2762 | * OVS_USERSPACE_ATTR_TUNNEL_OUT_PORT | |
2763 | */ | |
a6092018 BP |
2764 | if (dpif_ipfix_get_bridge_exporter_tunnel_sampling(ipfix) && |
2765 | dpif_ipfix_get_tunnel_port(ipfix, output_odp_port) ) { | |
8b7ea2d4 WZ |
2766 | tunnel_out_port = output_odp_port; |
2767 | } | |
2768 | } | |
2769 | ||
a6092018 BP |
2770 | union user_action_cookie cookie = { |
2771 | .ipfix = { | |
2772 | .type = USER_ACTION_COOKIE_IPFIX, | |
2773 | .output_odp_port = output_odp_port, | |
2774 | } | |
2775 | }; | |
2776 | compose_sample_action(ctx, | |
2777 | dpif_ipfix_get_bridge_exporter_probability(ipfix), | |
7321bda3 NM |
2778 | &cookie, sizeof cookie.ipfix, tunnel_out_port, |
2779 | false); | |
9583bc14 EJ |
2780 | } |
2781 | ||
a6092018 BP |
2782 | /* Fix "sample" action according to data collected while composing ODP actions, |
2783 | * as described in compose_sflow_action(). | |
2784 | * | |
2785 | * 'user_cookie_offset' must be the offset returned by add_sflow_action(). */ | |
9583bc14 | 2786 | static void |
a6092018 | 2787 | fix_sflow_action(struct xlate_ctx *ctx, unsigned int user_cookie_offset) |
9583bc14 EJ |
2788 | { |
2789 | const struct flow *base = &ctx->base_flow; | |
2790 | union user_action_cookie *cookie; | |
2791 | ||
a6092018 | 2792 | cookie = ofpbuf_at(ctx->odp_actions, user_cookie_offset, |
9583bc14 EJ |
2793 | sizeof cookie->sflow); |
2794 | ovs_assert(cookie->type == USER_ACTION_COOKIE_SFLOW); | |
2795 | ||
a6092018 BP |
2796 | cookie->type = USER_ACTION_COOKIE_SFLOW; |
2797 | cookie->sflow.vlan_tci = base->vlan_tci; | |
2798 | ||
2799 | /* See http://www.sflow.org/sflow_version_5.txt (search for "Input/output | |
2800 | * port information") for the interpretation of cookie->output. */ | |
2801 | switch (ctx->sflow_n_outputs) { | |
2802 | case 0: | |
2803 | /* 0x40000000 | 256 means "packet dropped for unknown reason". */ | |
2804 | cookie->sflow.output = 0x40000000 | 256; | |
2805 | break; | |
2806 | ||
2807 | case 1: | |
2808 | cookie->sflow.output = dpif_sflow_odp_port_to_ifindex( | |
2809 | ctx->xbridge->sflow, ctx->sflow_odp_port); | |
2810 | if (cookie->sflow.output) { | |
2811 | break; | |
2812 | } | |
2813 | /* Fall through. */ | |
2814 | default: | |
2815 | /* 0x80000000 means "multiple output ports. */ | |
2816 | cookie->sflow.output = 0x80000000 | ctx->sflow_n_outputs; | |
2817 | break; | |
2818 | } | |
9583bc14 EJ |
2819 | } |
2820 | ||
515793d5 BP |
2821 | static bool |
2822 | process_special(struct xlate_ctx *ctx, const struct xport *xport) | |
db7d4e46 | 2823 | { |
515793d5 | 2824 | const struct flow *flow = &ctx->xin->flow; |
49a73e0c | 2825 | struct flow_wildcards *wc = ctx->wc; |
46c88433 | 2826 | const struct xbridge *xbridge = ctx->xbridge; |
515793d5 BP |
2827 | const struct dp_packet *packet = ctx->xin->packet; |
2828 | enum slow_path_reason slow; | |
642dc74d | 2829 | |
46c88433 | 2830 | if (!xport) { |
515793d5 | 2831 | slow = 0; |
46c88433 | 2832 | } else if (xport->cfm && cfm_should_process_flow(xport->cfm, flow, wc)) { |
db7d4e46 | 2833 | if (packet) { |
46c88433 | 2834 | cfm_process_heartbeat(xport->cfm, packet); |
db7d4e46 | 2835 | } |
515793d5 | 2836 | slow = SLOW_CFM; |
fab52e16 | 2837 | } else if (xport->bfd && bfd_should_process_flow(xport->bfd, flow, wc)) { |
db7d4e46 | 2838 | if (packet) { |
46c88433 | 2839 | bfd_process_packet(xport->bfd, flow, packet); |
60d02c72 AW |
2840 | /* If POLL received, immediately sends FINAL back. */ |
2841 | if (bfd_should_send_packet(xport->bfd)) { | |
6d308b28 | 2842 | ofproto_dpif_monitor_port_send_soon(xport->ofport); |
60d02c72 | 2843 | } |
db7d4e46 | 2844 | } |
515793d5 | 2845 | slow = SLOW_BFD; |
46c88433 | 2846 | } else if (xport->xbundle && xport->xbundle->lacp |
db7d4e46 JP |
2847 | && flow->dl_type == htons(ETH_TYPE_LACP)) { |
2848 | if (packet) { | |
46c88433 | 2849 | lacp_process_packet(xport->xbundle->lacp, xport->ofport, packet); |
db7d4e46 | 2850 | } |
515793d5 | 2851 | slow = SLOW_LACP; |
9efd308e DV |
2852 | } else if ((xbridge->stp || xbridge->rstp) && |
2853 | stp_should_process_flow(flow, wc)) { | |
db7d4e46 | 2854 | if (packet) { |
f025bcb7 JR |
2855 | xbridge->stp |
2856 | ? stp_process_packet(xport, packet) | |
2857 | : rstp_process_packet(xport, packet); | |
db7d4e46 | 2858 | } |
515793d5 | 2859 | slow = SLOW_STP; |
19aef6ef | 2860 | } else if (xport->lldp && lldp_should_process_flow(xport->lldp, flow)) { |
0477baa9 DF |
2861 | if (packet) { |
2862 | lldp_process_packet(xport->lldp, packet); | |
2863 | } | |
515793d5 | 2864 | slow = SLOW_LLDP; |
db7d4e46 | 2865 | } else { |
515793d5 BP |
2866 | slow = 0; |
2867 | } | |
2868 | ||
2869 | if (slow) { | |
2870 | ctx->xout->slow |= slow; | |
2871 | return true; | |
2872 | } else { | |
2873 | return false; | |
db7d4e46 JP |
2874 | } |
2875 | } | |
2876 | ||
a36de779 PS |
2877 | static int |
2878 | tnl_route_lookup_flow(const struct flow *oflow, | |
a8704b50 PS |
2879 | struct in6_addr *ip, struct in6_addr *src, |
2880 | struct xport **out_port) | |
a36de779 PS |
2881 | { |
2882 | char out_dev[IFNAMSIZ]; | |
2883 | struct xbridge *xbridge; | |
2884 | struct xlate_cfg *xcfg; | |
c2b878e0 TLSC |
2885 | struct in6_addr gw; |
2886 | struct in6_addr dst; | |
a36de779 | 2887 | |
c2b878e0 | 2888 | dst = flow_tnl_dst(&oflow->tunnel); |
ed52ca57 | 2889 | if (!ovs_router_lookup(oflow->pkt_mark, &dst, out_dev, src, &gw)) { |
a36de779 PS |
2890 | return -ENOENT; |
2891 | } | |
2892 | ||
c2b878e0 TLSC |
2893 | if (ipv6_addr_is_set(&gw) && |
2894 | (!IN6_IS_ADDR_V4MAPPED(&gw) || in6_addr_get_mapped_ipv4(&gw))) { | |
a36de779 PS |
2895 | *ip = gw; |
2896 | } else { | |
c2b878e0 | 2897 | *ip = dst; |
a36de779 PS |
2898 | } |
2899 | ||
2900 | xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
2901 | ovs_assert(xcfg); | |
2902 | ||
2903 | HMAP_FOR_EACH (xbridge, hmap_node, &xcfg->xbridges) { | |
2904 | if (!strncmp(xbridge->name, out_dev, IFNAMSIZ)) { | |
2905 | struct xport *port; | |
2906 | ||
2907 | HMAP_FOR_EACH (port, ofp_node, &xbridge->xports) { | |
2908 | if (!strncmp(netdev_get_name(port->netdev), out_dev, IFNAMSIZ)) { | |
2909 | *out_port = port; | |
2910 | return 0; | |
2911 | } | |
2912 | } | |
2913 | } | |
2914 | } | |
2915 | return -ENOENT; | |
2916 | } | |
2917 | ||
2918 | static int | |
cdd42eda JG |
2919 | compose_table_xlate(struct xlate_ctx *ctx, const struct xport *out_dev, |
2920 | struct dp_packet *packet) | |
a36de779 | 2921 | { |
cdd42eda | 2922 | struct xbridge *xbridge = out_dev->xbridge; |
a36de779 PS |
2923 | struct ofpact_output output; |
2924 | struct flow flow; | |
2925 | ||
2926 | ofpact_init(&output.ofpact, OFPACT_OUTPUT, sizeof output); | |
cf62fa4c | 2927 | flow_extract(packet, &flow); |
cdd42eda JG |
2928 | flow.in_port.ofp_port = out_dev->ofp_port; |
2929 | output.port = OFPP_TABLE; | |
a36de779 PS |
2930 | output.max_len = 0; |
2931 | ||
1f4a8933 JR |
2932 | return ofproto_dpif_execute_actions__(xbridge->ofproto, |
2933 | ctx->xin->tables_version, &flow, | |
2934 | NULL, &output.ofpact, sizeof output, | |
2d9b49dd | 2935 | ctx->depth, ctx->resubmits, packet); |
a36de779 PS |
2936 | } |
2937 | ||
c2b878e0 TLSC |
2938 | static void |
2939 | tnl_send_nd_request(struct xlate_ctx *ctx, const struct xport *out_dev, | |
2940 | const struct eth_addr eth_src, | |
2941 | struct in6_addr * ipv6_src, struct in6_addr * ipv6_dst) | |
2942 | { | |
2943 | struct dp_packet packet; | |
2944 | ||
2945 | dp_packet_init(&packet, 0); | |
16187903 | 2946 | compose_nd_ns(&packet, eth_src, ipv6_src, ipv6_dst); |
c2b878e0 TLSC |
2947 | compose_table_xlate(ctx, out_dev, &packet); |
2948 | dp_packet_uninit(&packet); | |
2949 | } | |
2950 | ||
a36de779 | 2951 | static void |
cdd42eda | 2952 | tnl_send_arp_request(struct xlate_ctx *ctx, const struct xport *out_dev, |
74ff3298 | 2953 | const struct eth_addr eth_src, |
a36de779 PS |
2954 | ovs_be32 ip_src, ovs_be32 ip_dst) |
2955 | { | |
cf62fa4c | 2956 | struct dp_packet packet; |
a36de779 | 2957 | |
cf62fa4c | 2958 | dp_packet_init(&packet, 0); |
eb0b295e BP |
2959 | compose_arp(&packet, ARP_OP_REQUEST, |
2960 | eth_src, eth_addr_zero, true, ip_src, ip_dst); | |
a36de779 | 2961 | |
cdd42eda | 2962 | compose_table_xlate(ctx, out_dev, &packet); |
cf62fa4c | 2963 | dp_packet_uninit(&packet); |
a36de779 PS |
2964 | } |
2965 | ||
2966 | static int | |
81de18ec | 2967 | build_tunnel_send(struct xlate_ctx *ctx, const struct xport *xport, |
a36de779 PS |
2968 | const struct flow *flow, odp_port_t tunnel_odp_port) |
2969 | { | |
4975aa3e | 2970 | struct netdev_tnl_build_header_params tnl_params; |
a36de779 PS |
2971 | struct ovs_action_push_tnl tnl_push_data; |
2972 | struct xport *out_dev = NULL; | |
c2b878e0 TLSC |
2973 | ovs_be32 s_ip = 0, d_ip = 0; |
2974 | struct in6_addr s_ip6 = in6addr_any; | |
2975 | struct in6_addr d_ip6 = in6addr_any; | |
74ff3298 JR |
2976 | struct eth_addr smac; |
2977 | struct eth_addr dmac; | |
a36de779 | 2978 | int err; |
c2b878e0 TLSC |
2979 | char buf_sip6[INET6_ADDRSTRLEN]; |
2980 | char buf_dip6[INET6_ADDRSTRLEN]; | |
a36de779 | 2981 | |
a8704b50 | 2982 | err = tnl_route_lookup_flow(flow, &d_ip6, &s_ip6, &out_dev); |
a36de779 | 2983 | if (err) { |
2d9b49dd | 2984 | xlate_report(ctx, OFT_WARN, "native tunnel routing failed"); |
a36de779 PS |
2985 | return err; |
2986 | } | |
c2b878e0 | 2987 | |
2d9b49dd | 2988 | xlate_report(ctx, OFT_DETAIL, "tunneling to %s via %s", |
c2b878e0 TLSC |
2989 | ipv6_string_mapped(buf_dip6, &d_ip6), |
2990 | netdev_get_name(out_dev->netdev)); | |
a36de779 PS |
2991 | |
2992 | /* Use mac addr of bridge port of the peer. */ | |
74ff3298 | 2993 | err = netdev_get_etheraddr(out_dev->netdev, &smac); |
a36de779 | 2994 | if (err) { |
2d9b49dd BP |
2995 | xlate_report(ctx, OFT_WARN, |
2996 | "tunnel output device lacks Ethernet address"); | |
a36de779 PS |
2997 | return err; |
2998 | } | |
2999 | ||
c2b878e0 TLSC |
3000 | d_ip = in6_addr_get_mapped_ipv4(&d_ip6); |
3001 | if (d_ip) { | |
a8704b50 | 3002 | s_ip = in6_addr_get_mapped_ipv4(&s_ip6); |
a36de779 PS |
3003 | } |
3004 | ||
c2b878e0 | 3005 | err = tnl_neigh_lookup(out_dev->xbridge->name, &d_ip6, &dmac); |
a36de779 | 3006 | if (err) { |
2d9b49dd BP |
3007 | xlate_report(ctx, OFT_DETAIL, |
3008 | "neighbor cache miss for %s on bridge %s, " | |
c2b878e0 TLSC |
3009 | "sending %s request", |
3010 | buf_dip6, out_dev->xbridge->name, d_ip ? "ARP" : "ND"); | |
3011 | if (d_ip) { | |
3012 | tnl_send_arp_request(ctx, out_dev, smac, s_ip, d_ip); | |
3013 | } else { | |
3014 | tnl_send_nd_request(ctx, out_dev, smac, &s_ip6, &d_ip6); | |
3015 | } | |
a36de779 PS |
3016 | return err; |
3017 | } | |
c2b878e0 | 3018 | |
a36de779 PS |
3019 | if (ctx->xin->xcache) { |
3020 | struct xc_entry *entry; | |
3021 | ||
53902038 | 3022 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_TNL_NEIGH); |
901a517e JR |
3023 | ovs_strlcpy(entry->tnl_neigh_cache.br_name, out_dev->xbridge->name, |
3024 | sizeof entry->tnl_neigh_cache.br_name); | |
3025 | entry->tnl_neigh_cache.d_ipv6 = d_ip6; | |
a36de779 | 3026 | } |
81de18ec | 3027 | |
2d9b49dd | 3028 | xlate_report(ctx, OFT_DETAIL, "tunneling from "ETH_ADDR_FMT" %s" |
c2b878e0 TLSC |
3029 | " to "ETH_ADDR_FMT" %s", |
3030 | ETH_ADDR_ARGS(smac), ipv6_string_mapped(buf_sip6, &s_ip6), | |
3031 | ETH_ADDR_ARGS(dmac), buf_dip6); | |
3032 | ||
4975aa3e PS |
3033 | netdev_init_tnl_build_header_params(&tnl_params, flow, &s_ip6, dmac, smac); |
3034 | err = tnl_port_build_header(xport->ofport, &tnl_push_data, &tnl_params); | |
a36de779 PS |
3035 | if (err) { |
3036 | return err; | |
3037 | } | |
3038 | tnl_push_data.tnl_port = odp_to_u32(tunnel_odp_port); | |
3039 | tnl_push_data.out_port = odp_to_u32(out_dev->odp_port); | |
1520ef4f | 3040 | odp_put_tnl_push_action(ctx->odp_actions, &tnl_push_data); |
a36de779 PS |
3041 | return 0; |
3042 | } | |
3043 | ||
704bb0bf JS |
3044 | static void |
3045 | xlate_commit_actions(struct xlate_ctx *ctx) | |
3046 | { | |
3047 | bool use_masked = ctx->xbridge->support.masked_set_action; | |
3048 | ||
3049 | ctx->xout->slow |= commit_odp_actions(&ctx->xin->flow, &ctx->base_flow, | |
3050 | ctx->odp_actions, ctx->wc, | |
3051 | use_masked); | |
3052 | } | |
3053 | ||
07659514 | 3054 | static void |
72fe7578 | 3055 | clear_conntrack(struct xlate_ctx *ctx) |
07659514 | 3056 | { |
72fe7578 BP |
3057 | ctx->conntracked = false; |
3058 | ||
3059 | struct flow *flow = &ctx->xin->flow; | |
07659514 JS |
3060 | flow->ct_state = 0; |
3061 | flow->ct_zone = 0; | |
8e53fe8c | 3062 | flow->ct_mark = 0; |
72fe7578 | 3063 | flow->ct_label = OVS_U128_ZERO; |
daf4d3c1 JR |
3064 | |
3065 | flow->ct_nw_proto = 0; | |
3066 | flow->ct_tp_src = 0; | |
3067 | flow->ct_tp_dst = 0; | |
3068 | if (flow->dl_type == htons(ETH_TYPE_IP)) { | |
3069 | flow->ct_nw_src = 0; | |
3070 | flow->ct_nw_dst = 0; | |
3071 | } if (flow->dl_type == htons(ETH_TYPE_IPV6)) { | |
3072 | memset(&flow->ct_ipv6_src, 0, sizeof flow->ct_ipv6_src); | |
3073 | memset(&flow->ct_ipv6_dst, 0, sizeof flow->ct_ipv6_dst); | |
3074 | } | |
07659514 JS |
3075 | } |
3076 | ||
58d636ee BK |
3077 | static bool |
3078 | xlate_flow_is_protected(const struct xlate_ctx *ctx, const struct flow *flow, const struct xport *xport_out) | |
3079 | { | |
3080 | const struct xport *xport_in; | |
3081 | ||
3082 | if (!xport_out) { | |
3083 | return false; | |
3084 | } | |
3085 | ||
3086 | xport_in = get_ofp_port(ctx->xbridge, flow->in_port.ofp_port); | |
3087 | ||
3088 | return (xport_in && xport_in->xbundle && xport_out->xbundle && | |
3089 | xport_in->xbundle->protected && xport_out->xbundle->protected); | |
3090 | } | |
3091 | ||
9583bc14 | 3092 | static void |
4e022ec0 | 3093 | compose_output_action__(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
e93ef1c7 | 3094 | const struct xlate_bond_recirc *xr, bool check_stp) |
9583bc14 | 3095 | { |
46c88433 | 3096 | const struct xport *xport = get_ofp_port(ctx->xbridge, ofp_port); |
49a73e0c | 3097 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 3098 | struct flow *flow = &ctx->xin->flow; |
a36de779 | 3099 | struct flow_tnl flow_tnl; |
9583bc14 | 3100 | ovs_be16 flow_vlan_tci; |
1362e248 | 3101 | uint32_t flow_pkt_mark; |
9583bc14 | 3102 | uint8_t flow_nw_tos; |
4e022ec0 | 3103 | odp_port_t out_port, odp_port; |
a36de779 | 3104 | bool tnl_push_pop_send = false; |
ca077186 | 3105 | uint8_t dscp; |
9583bc14 EJ |
3106 | |
3107 | /* If 'struct flow' gets additional metadata, we'll need to zero it out | |
3108 | * before traversing a patch port. */ | |
daf4d3c1 | 3109 | BUILD_ASSERT_DECL(FLOW_WC_SEQ == 37); |
a36de779 | 3110 | memset(&flow_tnl, 0, sizeof flow_tnl); |
9583bc14 | 3111 | |
46c88433 | 3112 | if (!xport) { |
2d9b49dd | 3113 | xlate_report(ctx, OFT_WARN, "Nonexistent output port"); |
9583bc14 | 3114 | return; |
46c88433 | 3115 | } else if (xport->config & OFPUTIL_PC_NO_FWD) { |
2d9b49dd | 3116 | xlate_report(ctx, OFT_DETAIL, "OFPPC_NO_FWD set, skipping output"); |
9583bc14 | 3117 | return; |
1356dbd1 | 3118 | } else if (ctx->mirror_snaplen != 0 && xport->odp_port == ODPP_NONE) { |
2d9b49dd BP |
3119 | xlate_report(ctx, OFT_WARN, |
3120 | "Mirror truncate to ODPP_NONE, skipping output"); | |
1356dbd1 | 3121 | return; |
58d636ee | 3122 | } else if (xlate_flow_is_protected(ctx, flow, xport)) { |
2d9b49dd BP |
3123 | xlate_report(ctx, OFT_WARN, |
3124 | "Flow is between protected ports, skipping output."); | |
58d636ee | 3125 | return; |
0d1cee12 | 3126 | } else if (check_stp) { |
bbbca389 | 3127 | if (is_stp(&ctx->base_flow)) { |
9efd308e DV |
3128 | if (!xport_stp_should_forward_bpdu(xport) && |
3129 | !xport_rstp_should_manage_bpdu(xport)) { | |
3130 | if (ctx->xbridge->stp != NULL) { | |
2d9b49dd BP |
3131 | xlate_report(ctx, OFT_WARN, |
3132 | "STP not in listening state, " | |
3133 | "skipping bpdu output"); | |
9efd308e | 3134 | } else if (ctx->xbridge->rstp != NULL) { |
2d9b49dd BP |
3135 | xlate_report(ctx, OFT_WARN, |
3136 | "RSTP not managing BPDU in this state, " | |
3137 | "skipping bpdu output"); | |
9efd308e | 3138 | } |
0d1cee12 K |
3139 | return; |
3140 | } | |
9efd308e DV |
3141 | } else if (!xport_stp_forward_state(xport) || |
3142 | !xport_rstp_forward_state(xport)) { | |
3143 | if (ctx->xbridge->stp != NULL) { | |
2d9b49dd BP |
3144 | xlate_report(ctx, OFT_WARN, |
3145 | "STP not in forwarding state, skipping output"); | |
9efd308e | 3146 | } else if (ctx->xbridge->rstp != NULL) { |
2d9b49dd BP |
3147 | xlate_report(ctx, OFT_WARN, |
3148 | "RSTP not in forwarding state, skipping output"); | |
9efd308e | 3149 | } |
0d1cee12 K |
3150 | return; |
3151 | } | |
9583bc14 EJ |
3152 | } |
3153 | ||
46c88433 EJ |
3154 | if (xport->peer) { |
3155 | const struct xport *peer = xport->peer; | |
9583bc14 | 3156 | struct flow old_flow = ctx->xin->flow; |
8d8ab6c2 | 3157 | struct flow_tnl old_flow_tnl_wc = ctx->wc->masks.tunnel; |
07659514 | 3158 | bool old_conntrack = ctx->conntracked; |
e12ec36b | 3159 | bool old_was_mpls = ctx->was_mpls; |
1f4a8933 | 3160 | ovs_version_t old_version = ctx->xin->tables_version; |
1774d762 | 3161 | struct ofpbuf old_stack = ctx->stack; |
84cf3c1f | 3162 | uint8_t new_stack[1024]; |
ed9c9e3e | 3163 | struct ofpbuf old_action_set = ctx->action_set; |
2d9b49dd | 3164 | struct ovs_list *old_trace = ctx->xin->trace; |
ed9c9e3e | 3165 | uint64_t actset_stub[1024 / 8]; |
9583bc14 | 3166 | |
1774d762 | 3167 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); |
ed9c9e3e | 3168 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); |
46c88433 | 3169 | flow->in_port.ofp_port = peer->ofp_port; |
33bf9176 BP |
3170 | flow->metadata = htonll(0); |
3171 | memset(&flow->tunnel, 0, sizeof flow->tunnel); | |
07a3cd5c BP |
3172 | flow->tunnel.metadata.tab = ofproto_get_tun_tab( |
3173 | &peer->xbridge->ofproto->up); | |
8d8ab6c2 | 3174 | ctx->wc->masks.tunnel.metadata.tab = flow->tunnel.metadata.tab; |
33bf9176 | 3175 | memset(flow->regs, 0, sizeof flow->regs); |
c61f3870 | 3176 | flow->actset_output = OFPP_UNSET; |
72fe7578 | 3177 | clear_conntrack(ctx); |
2d9b49dd BP |
3178 | ctx->xin->trace = xlate_report(ctx, OFT_BRIDGE, |
3179 | "bridge(\"%s\")", peer->xbridge->name); | |
9583bc14 | 3180 | |
76f3c260 BP |
3181 | /* When the patch port points to a different bridge, then the mirrors |
3182 | * for that bridge clearly apply independently to the packet, so we | |
3183 | * reset the mirror bitmap to zero and then restore it after the packet | |
3184 | * returns. | |
3185 | * | |
3186 | * When the patch port points to the same bridge, this is more of a | |
3187 | * design decision: can mirrors be re-applied to the packet after it | |
3188 | * re-enters the bridge, or should we treat that as doubly mirroring a | |
3189 | * single packet? The former may be cleaner, since it respects the | |
3190 | * model in which a patch port is like a physical cable plugged from | |
3191 | * one switch port to another, but the latter may be less surprising to | |
3192 | * users. We take the latter choice, for now at least. (To use the | |
3193 | * former choice, hard-code 'independent_mirrors' to "true".) */ | |
3194 | mirror_mask_t old_mirrors = ctx->mirrors; | |
3195 | bool independent_mirrors = peer->xbridge != ctx->xbridge; | |
3196 | if (independent_mirrors) { | |
3197 | ctx->mirrors = 0; | |
3198 | } | |
3199 | ctx->xbridge = peer->xbridge; | |
3200 | ||
621b8064 | 3201 | /* The bridge is now known so obtain its table version. */ |
1f4a8933 | 3202 | ctx->xin->tables_version |
621b8064 JR |
3203 | = ofproto_dpif_get_tables_version(ctx->xbridge->ofproto); |
3204 | ||
515793d5 | 3205 | if (!process_special(ctx, peer) && may_receive(peer, ctx)) { |
9efd308e | 3206 | if (xport_stp_forward_state(peer) && xport_rstp_forward_state(peer)) { |
2cd20955 JR |
3207 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true, |
3208 | false); | |
1d361a81 | 3209 | if (!ctx->freezing) { |
8a5fb3b4 | 3210 | xlate_action_set(ctx); |
e672ff9b | 3211 | } |
1d361a81 | 3212 | if (ctx->freezing) { |
77ab5fd2 | 3213 | finish_freezing(ctx); |
ed9c9e3e | 3214 | } |
9583bc14 | 3215 | } else { |
9efd308e DV |
3216 | /* Forwarding is disabled by STP and RSTP. Let OFPP_NORMAL and |
3217 | * the learning action look at the packet, then drop it. */ | |
9583bc14 | 3218 | struct flow old_base_flow = ctx->base_flow; |
1520ef4f | 3219 | size_t old_size = ctx->odp_actions->size; |
76f3c260 | 3220 | mirror_mask_t old_mirrors2 = ctx->mirrors; |
f3d5b473 | 3221 | |
2cd20955 JR |
3222 | xlate_table_action(ctx, flow->in_port.ofp_port, 0, true, true, |
3223 | false); | |
76f3c260 | 3224 | ctx->mirrors = old_mirrors2; |
9583bc14 | 3225 | ctx->base_flow = old_base_flow; |
1520ef4f | 3226 | ctx->odp_actions->size = old_size; |
e672ff9b | 3227 | |
1d361a81 BP |
3228 | /* Undo changes that may have been done for freezing. */ |
3229 | ctx_cancel_freeze(ctx); | |
9583bc14 EJ |
3230 | } |
3231 | } | |
3232 | ||
2d9b49dd | 3233 | ctx->xin->trace = old_trace; |
76f3c260 BP |
3234 | if (independent_mirrors) { |
3235 | ctx->mirrors = old_mirrors; | |
3236 | } | |
9583bc14 | 3237 | ctx->xin->flow = old_flow; |
832554e3 | 3238 | ctx->xbridge = xport->xbridge; |
ed9c9e3e JR |
3239 | ofpbuf_uninit(&ctx->action_set); |
3240 | ctx->action_set = old_action_set; | |
1774d762 JR |
3241 | ofpbuf_uninit(&ctx->stack); |
3242 | ctx->stack = old_stack; | |
9583bc14 | 3243 | |
621b8064 | 3244 | /* Restore calling bridge's lookup version. */ |
1f4a8933 | 3245 | ctx->xin->tables_version = old_version; |
621b8064 | 3246 | |
8d8ab6c2 JG |
3247 | /* Since this packet came in on a patch port (from the perspective of |
3248 | * the peer bridge), it cannot have useful tunnel information. As a | |
3249 | * result, any wildcards generated on that tunnel also cannot be valid. | |
3250 | * The tunnel wildcards must be restored to their original version since | |
3251 | * the peer bridge uses a separate tunnel metadata table and therefore | |
3252 | * any generated wildcards will be garbage in the context of our | |
3253 | * metadata table. */ | |
3254 | ctx->wc->masks.tunnel = old_flow_tnl_wc; | |
3255 | ||
e12ec36b SH |
3256 | /* The peer bridge popping MPLS should have no effect on the original |
3257 | * bridge. */ | |
3258 | ctx->was_mpls = old_was_mpls; | |
3259 | ||
07659514 JS |
3260 | /* The peer bridge's conntrack execution should have no effect on the |
3261 | * original bridge. */ | |
3262 | ctx->conntracked = old_conntrack; | |
3263 | ||
f3d5b473 JR |
3264 | /* The fact that the peer bridge exits (for any reason) does not mean |
3265 | * that the original bridge should exit. Specifically, if the peer | |
1d361a81 BP |
3266 | * bridge freezes translation, the original bridge must continue |
3267 | * processing with the original, not the frozen packet! */ | |
f3d5b473 JR |
3268 | ctx->exit = false; |
3269 | ||
fff1b9c0 JR |
3270 | /* Peer bridge errors do not propagate back. */ |
3271 | ctx->error = XLATE_OK; | |
3272 | ||
9583bc14 | 3273 | if (ctx->xin->resubmit_stats) { |
46c88433 EJ |
3274 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
3275 | netdev_vport_inc_rx(peer->netdev, ctx->xin->resubmit_stats); | |
a1aeea86 AW |
3276 | if (peer->bfd) { |
3277 | bfd_account_rx(peer->bfd, ctx->xin->resubmit_stats); | |
3278 | } | |
9583bc14 | 3279 | } |
b256dc52 JS |
3280 | if (ctx->xin->xcache) { |
3281 | struct xc_entry *entry; | |
3282 | ||
3283 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
901a517e JR |
3284 | entry->dev.tx = netdev_ref(xport->netdev); |
3285 | entry->dev.rx = netdev_ref(peer->netdev); | |
3286 | entry->dev.bfd = bfd_ref(peer->bfd); | |
b256dc52 | 3287 | } |
9583bc14 EJ |
3288 | return; |
3289 | } | |
3290 | ||
33bf9176 | 3291 | flow_vlan_tci = flow->vlan_tci; |
1362e248 | 3292 | flow_pkt_mark = flow->pkt_mark; |
33bf9176 | 3293 | flow_nw_tos = flow->nw_tos; |
9583bc14 | 3294 | |
16194afd DDP |
3295 | if (count_skb_priorities(xport)) { |
3296 | memset(&wc->masks.skb_priority, 0xff, sizeof wc->masks.skb_priority); | |
3297 | if (dscp_from_skb_priority(xport, flow->skb_priority, &dscp)) { | |
3298 | wc->masks.nw_tos |= IP_DSCP_MASK; | |
3299 | flow->nw_tos &= ~IP_DSCP_MASK; | |
3300 | flow->nw_tos |= dscp; | |
3301 | } | |
9583bc14 EJ |
3302 | } |
3303 | ||
46c88433 | 3304 | if (xport->is_tunnel) { |
c2b878e0 | 3305 | struct in6_addr dst; |
9583bc14 EJ |
3306 | /* Save tunnel metadata so that changes made due to |
3307 | * the Logical (tunnel) Port are not visible for any further | |
3308 | * matches, while explicit set actions on tunnel metadata are. | |
3309 | */ | |
a36de779 | 3310 | flow_tnl = flow->tunnel; |
49a73e0c | 3311 | odp_port = tnl_port_send(xport->ofport, flow, ctx->wc); |
4e022ec0 | 3312 | if (odp_port == ODPP_NONE) { |
2d9b49dd | 3313 | xlate_report(ctx, OFT_WARN, "Tunneling decided against output"); |
9583bc14 EJ |
3314 | goto out; /* restore flow_nw_tos */ |
3315 | } | |
c2b878e0 TLSC |
3316 | dst = flow_tnl_dst(&flow->tunnel); |
3317 | if (ipv6_addr_equals(&dst, &ctx->orig_tunnel_ipv6_dst)) { | |
2d9b49dd | 3318 | xlate_report(ctx, OFT_WARN, "Not tunneling to our own address"); |
9583bc14 EJ |
3319 | goto out; /* restore flow_nw_tos */ |
3320 | } | |
3321 | if (ctx->xin->resubmit_stats) { | |
46c88433 | 3322 | netdev_vport_inc_tx(xport->netdev, ctx->xin->resubmit_stats); |
9583bc14 | 3323 | } |
b256dc52 JS |
3324 | if (ctx->xin->xcache) { |
3325 | struct xc_entry *entry; | |
3326 | ||
3327 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_NETDEV); | |
901a517e | 3328 | entry->dev.tx = netdev_ref(xport->netdev); |
b256dc52 | 3329 | } |
9583bc14 | 3330 | out_port = odp_port; |
a36de779 | 3331 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
2d9b49dd | 3332 | xlate_report(ctx, OFT_DETAIL, "output to native tunnel"); |
a36de779 PS |
3333 | tnl_push_pop_send = true; |
3334 | } else { | |
2d9b49dd | 3335 | xlate_report(ctx, OFT_DETAIL, "output to kernel tunnel"); |
1520ef4f | 3336 | commit_odp_tunnel_action(flow, &ctx->base_flow, ctx->odp_actions); |
a36de779 PS |
3337 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ |
3338 | } | |
9583bc14 | 3339 | } else { |
46c88433 | 3340 | odp_port = xport->odp_port; |
7614e5d0 | 3341 | out_port = odp_port; |
9583bc14 | 3342 | } |
9583bc14 | 3343 | |
4e022ec0 | 3344 | if (out_port != ODPP_NONE) { |
704bb0bf | 3345 | xlate_commit_actions(ctx); |
adcf00ba | 3346 | |
e93ef1c7 | 3347 | if (xr) { |
347bf289 | 3348 | struct ovs_action_hash *act_hash; |
adcf00ba | 3349 | |
347bf289 | 3350 | /* Hash action. */ |
1520ef4f | 3351 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, |
347bf289 AZ |
3352 | OVS_ACTION_ATTR_HASH, |
3353 | sizeof *act_hash); | |
3354 | act_hash->hash_alg = xr->hash_alg; | |
62ac1f20 | 3355 | act_hash->hash_basis = xr->hash_basis; |
347bf289 AZ |
3356 | |
3357 | /* Recirc action. */ | |
1520ef4f | 3358 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, |
347bf289 | 3359 | xr->recirc_id); |
adcf00ba | 3360 | } else { |
a36de779 PS |
3361 | |
3362 | if (tnl_push_pop_send) { | |
3363 | build_tunnel_send(ctx, xport, flow, odp_port); | |
3364 | flow->tunnel = flow_tnl; /* Restore tunnel metadata */ | |
3365 | } else { | |
3366 | odp_port_t odp_tnl_port = ODPP_NONE; | |
3367 | ||
3368 | /* XXX: Write better Filter for tunnel port. We can use inport | |
3369 | * int tunnel-port flow to avoid these checks completely. */ | |
3370 | if (ofp_port == OFPP_LOCAL && | |
3371 | ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
3372 | ||
3373 | odp_tnl_port = tnl_port_map_lookup(flow, wc); | |
3374 | } | |
3375 | ||
3376 | if (odp_tnl_port != ODPP_NONE) { | |
1520ef4f | 3377 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3378 | OVS_ACTION_ATTR_TUNNEL_POP, |
3379 | odp_tnl_port); | |
3380 | } else { | |
3381 | /* Tunnel push-pop action is not compatible with | |
3382 | * IPFIX action. */ | |
a6092018 | 3383 | compose_ipfix_action(ctx, out_port); |
1356dbd1 WT |
3384 | |
3385 | /* Handle truncation of the mirrored packet. */ | |
3386 | if (ctx->mirror_snaplen > 0 && | |
3387 | ctx->mirror_snaplen < UINT16_MAX) { | |
3388 | struct ovs_action_trunc *trunc; | |
3389 | ||
3390 | trunc = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
3391 | OVS_ACTION_ATTR_TRUNC, | |
3392 | sizeof *trunc); | |
3393 | trunc->max_len = ctx->mirror_snaplen; | |
3394 | if (!ctx->xbridge->support.trunc) { | |
3395 | ctx->xout->slow |= SLOW_ACTION; | |
3396 | } | |
3397 | } | |
3398 | ||
1520ef4f | 3399 | nl_msg_put_odp_port(ctx->odp_actions, |
a36de779 PS |
3400 | OVS_ACTION_ATTR_OUTPUT, |
3401 | out_port); | |
1356dbd1 WT |
3402 | } |
3403 | } | |
adcf00ba | 3404 | } |
9583bc14 | 3405 | |
6cbbf4fa EJ |
3406 | ctx->sflow_odp_port = odp_port; |
3407 | ctx->sflow_n_outputs++; | |
2031ef97 | 3408 | ctx->nf_output_iface = ofp_port; |
6cbbf4fa EJ |
3409 | } |
3410 | ||
7efbc3b7 BP |
3411 | if (mbridge_has_mirrors(ctx->xbridge->mbridge) && xport->xbundle) { |
3412 | mirror_packet(ctx, xport->xbundle, | |
3413 | xbundle_mirror_dst(xport->xbundle->xbridge, | |
3414 | xport->xbundle)); | |
3415 | } | |
3416 | ||
6cbbf4fa | 3417 | out: |
9583bc14 | 3418 | /* Restore flow */ |
33bf9176 | 3419 | flow->vlan_tci = flow_vlan_tci; |
1362e248 | 3420 | flow->pkt_mark = flow_pkt_mark; |
33bf9176 | 3421 | flow->nw_tos = flow_nw_tos; |
9583bc14 EJ |
3422 | } |
3423 | ||
3424 | static void | |
e93ef1c7 JR |
3425 | compose_output_action(struct xlate_ctx *ctx, ofp_port_t ofp_port, |
3426 | const struct xlate_bond_recirc *xr) | |
9583bc14 | 3427 | { |
e93ef1c7 | 3428 | compose_output_action__(ctx, ofp_port, xr, true); |
9583bc14 EJ |
3429 | } |
3430 | ||
bb61b33d | 3431 | static void |
790c5d26 | 3432 | xlate_recursively(struct xlate_ctx *ctx, struct rule_dpif *rule, bool deepens) |
bb61b33d BP |
3433 | { |
3434 | struct rule_dpif *old_rule = ctx->rule; | |
8b1e5560 | 3435 | ovs_be64 old_cookie = ctx->rule_cookie; |
dc723c44 | 3436 | const struct rule_actions *actions; |
bb61b33d BP |
3437 | |
3438 | if (ctx->xin->resubmit_stats) { | |
70742c7f | 3439 | rule_dpif_credit_stats(rule, ctx->xin->resubmit_stats); |
bb61b33d BP |
3440 | } |
3441 | ||
98b07853 | 3442 | ctx->resubmits++; |
790c5d26 | 3443 | |
790c5d26 | 3444 | ctx->depth += deepens; |
bb61b33d | 3445 | ctx->rule = rule; |
07a3cd5c BP |
3446 | ctx->rule_cookie = rule->up.flow_cookie; |
3447 | actions = rule_get_actions(&rule->up); | |
6f00e29b | 3448 | do_xlate_actions(actions->ofpacts, actions->ofpacts_len, ctx); |
8b1e5560 | 3449 | ctx->rule_cookie = old_cookie; |
bb61b33d | 3450 | ctx->rule = old_rule; |
790c5d26 | 3451 | ctx->depth -= deepens; |
bb61b33d BP |
3452 | } |
3453 | ||
bd3240ba SH |
3454 | static bool |
3455 | xlate_resubmit_resource_check(struct xlate_ctx *ctx) | |
9583bc14 | 3456 | { |
790c5d26 | 3457 | if (ctx->depth >= MAX_DEPTH) { |
2d9b49dd | 3458 | xlate_report_error(ctx, "over max translation depth %d", MAX_DEPTH); |
fff1b9c0 | 3459 | ctx->error = XLATE_RECURSION_TOO_DEEP; |
790c5d26 | 3460 | } else if (ctx->resubmits >= MAX_RESUBMITS) { |
2d9b49dd | 3461 | xlate_report_error(ctx, "over %d resubmit actions", MAX_RESUBMITS); |
fff1b9c0 | 3462 | ctx->error = XLATE_TOO_MANY_RESUBMITS; |
1520ef4f | 3463 | } else if (ctx->odp_actions->size > UINT16_MAX) { |
2d9b49dd | 3464 | xlate_report_error(ctx, "resubmits yielded over 64 kB of actions"); |
fff1b9c0 JR |
3465 | /* NOT an error, as we'll be slow-pathing the flow in this case? */ |
3466 | ctx->exit = true; /* XXX: translation still terminated! */ | |
6fd6ed71 | 3467 | } else if (ctx->stack.size >= 65536) { |
2d9b49dd | 3468 | xlate_report_error(ctx, "resubmits yielded over 64 kB of stack"); |
fff1b9c0 | 3469 | ctx->error = XLATE_STACK_TOO_DEEP; |
98b07853 | 3470 | } else { |
bd3240ba SH |
3471 | return true; |
3472 | } | |
3473 | ||
3474 | return false; | |
3475 | } | |
3476 | ||
2cd20955 JR |
3477 | static void |
3478 | tuple_swap_flow(struct flow *flow, bool ipv4) | |
3479 | { | |
3480 | uint8_t nw_proto = flow->nw_proto; | |
3481 | flow->nw_proto = flow->ct_nw_proto; | |
3482 | flow->ct_nw_proto = nw_proto; | |
3483 | ||
3484 | if (ipv4) { | |
3485 | ovs_be32 nw_src = flow->nw_src; | |
3486 | flow->nw_src = flow->ct_nw_src; | |
3487 | flow->ct_nw_src = nw_src; | |
3488 | ||
3489 | ovs_be32 nw_dst = flow->nw_dst; | |
3490 | flow->nw_dst = flow->ct_nw_dst; | |
3491 | flow->ct_nw_dst = nw_dst; | |
3492 | } else { | |
3493 | struct in6_addr ipv6_src = flow->ipv6_src; | |
3494 | flow->ipv6_src = flow->ct_ipv6_src; | |
3495 | flow->ct_ipv6_src = ipv6_src; | |
3496 | ||
3497 | struct in6_addr ipv6_dst = flow->ipv6_dst; | |
3498 | flow->ipv6_dst = flow->ct_ipv6_dst; | |
3499 | flow->ct_ipv6_dst = ipv6_dst; | |
3500 | } | |
3501 | ||
3502 | ovs_be16 tp_src = flow->tp_src; | |
3503 | flow->tp_src = flow->ct_tp_src; | |
3504 | flow->ct_tp_src = tp_src; | |
3505 | ||
3506 | ovs_be16 tp_dst = flow->tp_dst; | |
3507 | flow->tp_dst = flow->ct_tp_dst; | |
3508 | flow->ct_tp_dst = tp_dst; | |
3509 | } | |
3510 | ||
3511 | static void | |
3512 | tuple_swap(struct flow *flow, struct flow_wildcards *wc) | |
3513 | { | |
3514 | bool ipv4 = (flow->dl_type == htons(ETH_TYPE_IP)); | |
3515 | ||
3516 | tuple_swap_flow(flow, ipv4); | |
3517 | tuple_swap_flow(&wc->masks, ipv4); | |
3518 | } | |
3519 | ||
bd3240ba | 3520 | static void |
6d328fa2 | 3521 | xlate_table_action(struct xlate_ctx *ctx, ofp_port_t in_port, uint8_t table_id, |
2cd20955 JR |
3522 | bool may_packet_in, bool honor_table_miss, |
3523 | bool with_ct_orig) | |
bd3240ba | 3524 | { |
e12ec36b SH |
3525 | /* Check if we need to recirculate before matching in a table. */ |
3526 | if (ctx->was_mpls) { | |
3527 | ctx_trigger_freeze(ctx); | |
3528 | return; | |
3529 | } | |
bd3240ba | 3530 | if (xlate_resubmit_resource_check(ctx)) { |
9583bc14 | 3531 | uint8_t old_table_id = ctx->table_id; |
3f207910 | 3532 | struct rule_dpif *rule; |
9583bc14 EJ |
3533 | |
3534 | ctx->table_id = table_id; | |
3535 | ||
2cd20955 JR |
3536 | /* Swap packet fields with CT 5-tuple if requested. */ |
3537 | if (with_ct_orig) { | |
3538 | /* Do not swap if there is no CT tuple, or if key is not IP. */ | |
3539 | if (ctx->xin->flow.ct_nw_proto == 0 || | |
3540 | !is_ip_any(&ctx->xin->flow)) { | |
3541 | xlate_report_error(ctx, | |
3542 | "resubmit(ct) with non-tracked or non-IP packet!"); | |
3543 | return; | |
3544 | } | |
3545 | tuple_swap(&ctx->xin->flow, ctx->wc); | |
3546 | } | |
34dd0d78 | 3547 | rule = rule_dpif_lookup_from_table(ctx->xbridge->ofproto, |
1f4a8933 | 3548 | ctx->xin->tables_version, |
c0e638aa | 3549 | &ctx->xin->flow, ctx->wc, |
34dd0d78 JR |
3550 | ctx->xin->resubmit_stats, |
3551 | &ctx->table_id, in_port, | |
a027899e JR |
3552 | may_packet_in, honor_table_miss, |
3553 | ctx->xin->xcache); | |
2cd20955 JR |
3554 | /* Swap back. */ |
3555 | if (with_ct_orig) { | |
3556 | tuple_swap(&ctx->xin->flow, ctx->wc); | |
3557 | } | |
ad3efdcb | 3558 | |
a2143702 | 3559 | if (rule) { |
83709dfa JR |
3560 | /* Fill in the cache entry here instead of xlate_recursively |
3561 | * to make the reference counting more explicit. We take a | |
3562 | * reference in the lookups above if we are going to cache the | |
3563 | * rule. */ | |
3564 | if (ctx->xin->xcache) { | |
3565 | struct xc_entry *entry; | |
3566 | ||
3567 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_RULE); | |
901a517e | 3568 | entry->rule = rule; |
07a3cd5c | 3569 | ofproto_rule_ref(&rule->up); |
83709dfa | 3570 | } |
2d9b49dd BP |
3571 | |
3572 | struct ovs_list *old_trace = ctx->xin->trace; | |
3573 | xlate_report_table(ctx, rule, table_id); | |
790c5d26 | 3574 | xlate_recursively(ctx, rule, table_id <= old_table_id); |
2d9b49dd | 3575 | ctx->xin->trace = old_trace; |
ad3efdcb EJ |
3576 | } |
3577 | ||
9583bc14 | 3578 | ctx->table_id = old_table_id; |
98b07853 | 3579 | return; |
9583bc14 EJ |
3580 | } |
3581 | } | |
3582 | ||
76973237 | 3583 | /* Consumes the group reference, which is only taken if xcache exists. */ |
f4fb341b | 3584 | static void |
1e684d7d RW |
3585 | xlate_group_stats(struct xlate_ctx *ctx, struct group_dpif *group, |
3586 | struct ofputil_bucket *bucket) | |
3587 | { | |
3588 | if (ctx->xin->resubmit_stats) { | |
3589 | group_dpif_credit_stats(group, bucket, ctx->xin->resubmit_stats); | |
3590 | } | |
3591 | if (ctx->xin->xcache) { | |
3592 | struct xc_entry *entry; | |
3593 | ||
3594 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_GROUP); | |
901a517e JR |
3595 | entry->group.group = group; |
3596 | entry->group.bucket = bucket; | |
1e684d7d RW |
3597 | } |
3598 | } | |
3599 | ||
3600 | static void | |
3601 | xlate_group_bucket(struct xlate_ctx *ctx, struct ofputil_bucket *bucket) | |
f4fb341b SH |
3602 | { |
3603 | uint64_t action_list_stub[1024 / 8]; | |
0a2869d5 BP |
3604 | struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub); |
3605 | struct ofpbuf action_set = ofpbuf_const_initializer(bucket->ofpacts, | |
3606 | bucket->ofpacts_len); | |
5b09e569 | 3607 | struct flow old_flow = ctx->xin->flow; |
e12ec36b | 3608 | bool old_was_mpls = ctx->was_mpls; |
f4fb341b | 3609 | |
f4fb341b | 3610 | ofpacts_execute_action_set(&action_list, &action_set); |
790c5d26 | 3611 | ctx->depth++; |
6fd6ed71 | 3612 | do_xlate_actions(action_list.data, action_list.size, ctx); |
790c5d26 | 3613 | ctx->depth--; |
f4fb341b | 3614 | |
f4fb341b | 3615 | ofpbuf_uninit(&action_list); |
5b09e569 | 3616 | |
77ab5fd2 | 3617 | /* Check if need to freeze. */ |
1d361a81 | 3618 | if (ctx->freezing) { |
77ab5fd2 | 3619 | finish_freezing(ctx); |
e672ff9b JR |
3620 | } |
3621 | ||
5b09e569 JR |
3622 | /* Roll back flow to previous state. |
3623 | * This is equivalent to cloning the packet for each bucket. | |
3624 | * | |
3625 | * As a side effect any subsequently applied actions will | |
3626 | * also effectively be applied to a clone of the packet taken | |
3627 | * just before applying the all or indirect group. | |
3628 | * | |
3629 | * Note that group buckets are action sets, hence they cannot modify the | |
3630 | * main action set. Also any stack actions are ignored when executing an | |
3631 | * action set, so group buckets cannot change the stack either. | |
3632 | * However, we do allow resubmit actions in group buckets, which could | |
3633 | * break the above assumptions. It is up to the controller to not mess up | |
3634 | * with the action_set and stack in the tables resubmitted to from | |
3635 | * group buckets. */ | |
3636 | ctx->xin->flow = old_flow; | |
3637 | ||
e12ec36b SH |
3638 | /* The group bucket popping MPLS should have no effect after bucket |
3639 | * execution. */ | |
3640 | ctx->was_mpls = old_was_mpls; | |
3641 | ||
5b09e569 JR |
3642 | /* The fact that the group bucket exits (for any reason) does not mean that |
3643 | * the translation after the group action should exit. Specifically, if | |
1d361a81 BP |
3644 | * the group bucket freezes translation, the actions after the group action |
3645 | * must continue processing with the original, not the frozen packet! */ | |
5b09e569 | 3646 | ctx->exit = false; |
f4fb341b SH |
3647 | } |
3648 | ||
3649 | static void | |
3650 | xlate_all_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3651 | { | |
1e684d7d | 3652 | struct ofputil_bucket *bucket; |
07a3cd5c | 3653 | LIST_FOR_EACH (bucket, list_node, &group->up.buckets) { |
f4fb341b | 3654 | xlate_group_bucket(ctx, bucket); |
f4fb341b | 3655 | } |
1e684d7d | 3656 | xlate_group_stats(ctx, group, NULL); |
f4fb341b SH |
3657 | } |
3658 | ||
dd8cd4b4 SH |
3659 | static void |
3660 | xlate_ff_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3661 | { | |
1e684d7d | 3662 | struct ofputil_bucket *bucket; |
dd8cd4b4 SH |
3663 | |
3664 | bucket = group_first_live_bucket(ctx, group, 0); | |
3665 | if (bucket) { | |
3666 | xlate_group_bucket(ctx, bucket); | |
1e684d7d | 3667 | xlate_group_stats(ctx, group, bucket); |
76973237 | 3668 | } else if (ctx->xin->xcache) { |
07a3cd5c | 3669 | ofproto_group_unref(&group->up); |
dd8cd4b4 SH |
3670 | } |
3671 | } | |
3672 | ||
fe7e5749 | 3673 | static void |
7565c3e4 | 3674 | xlate_default_select_group(struct xlate_ctx *ctx, struct group_dpif *group) |
fe7e5749 | 3675 | { |
49a73e0c | 3676 | struct flow_wildcards *wc = ctx->wc; |
1e684d7d | 3677 | struct ofputil_bucket *bucket; |
fe7e5749 SH |
3678 | uint32_t basis; |
3679 | ||
1d1aae0b | 3680 | basis = flow_hash_symmetric_l4(&ctx->xin->flow, 0); |
80e3509d | 3681 | flow_mask_hash_fields(&ctx->xin->flow, wc, NX_HASH_FIELDS_SYMMETRIC_L4); |
fe7e5749 SH |
3682 | bucket = group_best_live_bucket(ctx, group, basis); |
3683 | if (bucket) { | |
fe7e5749 | 3684 | xlate_group_bucket(ctx, bucket); |
1e684d7d | 3685 | xlate_group_stats(ctx, group, bucket); |
76973237 | 3686 | } else if (ctx->xin->xcache) { |
07a3cd5c | 3687 | ofproto_group_unref(&group->up); |
fe7e5749 SH |
3688 | } |
3689 | } | |
3690 | ||
0c4b9393 SH |
3691 | static void |
3692 | xlate_hash_fields_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3693 | { | |
07a3cd5c BP |
3694 | const struct field_array *fields = &group->up.props.fields; |
3695 | const uint8_t *mask_values = fields->values; | |
3696 | uint32_t basis = hash_uint64(group->up.props.selection_method_param); | |
0c4b9393 | 3697 | |
07a3cd5c | 3698 | size_t i; |
e8dba719 JR |
3699 | BITMAP_FOR_EACH_1 (i, MFF_N_IDS, fields->used.bm) { |
3700 | const struct mf_field *mf = mf_from_id(i); | |
0c4b9393 | 3701 | |
e8dba719 JR |
3702 | /* Skip fields for which prerequisities are not met. */ |
3703 | if (!mf_are_prereqs_ok(mf, &ctx->xin->flow, ctx->wc)) { | |
3704 | /* Skip the mask bytes for this field. */ | |
3705 | mask_values += mf->n_bytes; | |
3706 | continue; | |
3707 | } | |
0c4b9393 | 3708 | |
e8dba719 JR |
3709 | union mf_value value; |
3710 | union mf_value mask; | |
0c4b9393 | 3711 | |
e8dba719 JR |
3712 | mf_get_value(mf, &ctx->xin->flow, &value); |
3713 | /* Mask the value. */ | |
3714 | for (int j = 0; j < mf->n_bytes; j++) { | |
3715 | mask.b[j] = *mask_values++; | |
3716 | value.b[j] &= mask.b[j]; | |
3717 | } | |
3718 | basis = hash_bytes(&value, mf->n_bytes, basis); | |
1cb20095 | 3719 | |
e8dba719 JR |
3720 | /* For tunnels, hash in whether the field is present. */ |
3721 | if (mf_is_tun_metadata(mf)) { | |
3722 | basis = hash_boolean(mf_is_set(mf, &ctx->xin->flow), basis); | |
0c4b9393 | 3723 | } |
e8dba719 JR |
3724 | |
3725 | mf_mask_field_masked(mf, &mask, ctx->wc); | |
0c4b9393 SH |
3726 | } |
3727 | ||
07a3cd5c | 3728 | struct ofputil_bucket *bucket = group_best_live_bucket(ctx, group, basis); |
0c4b9393 SH |
3729 | if (bucket) { |
3730 | xlate_group_bucket(ctx, bucket); | |
3731 | xlate_group_stats(ctx, group, bucket); | |
76973237 | 3732 | } else if (ctx->xin->xcache) { |
07a3cd5c | 3733 | ofproto_group_unref(&group->up); |
0c4b9393 SH |
3734 | } |
3735 | } | |
3736 | ||
53cc166a JR |
3737 | static void |
3738 | xlate_dp_hash_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3739 | { | |
3740 | struct ofputil_bucket *bucket; | |
3741 | ||
3742 | /* dp_hash value 0 is special since it means that the dp_hash has not been | |
3743 | * computed, as all computed dp_hash values are non-zero. Therefore | |
3744 | * compare to zero can be used to decide if the dp_hash value is valid | |
3745 | * without masking the dp_hash field. */ | |
3746 | if (!ctx->xin->flow.dp_hash) { | |
07a3cd5c | 3747 | uint64_t param = group->up.props.selection_method_param; |
53cc166a JR |
3748 | |
3749 | ctx_trigger_recirculate_with_hash(ctx, param >> 32, (uint32_t)param); | |
3750 | } else { | |
07a3cd5c | 3751 | uint32_t n_buckets = group->up.n_buckets; |
53cc166a JR |
3752 | if (n_buckets) { |
3753 | /* Minimal mask to cover the number of buckets. */ | |
3754 | uint32_t mask = (1 << log_2_ceil(n_buckets)) - 1; | |
3755 | /* Multiplier chosen to make the trivial 1 bit case to | |
3756 | * actually distribute amongst two equal weight buckets. */ | |
3757 | uint32_t basis = 0xc2b73583 * (ctx->xin->flow.dp_hash & mask); | |
3758 | ||
3759 | ctx->wc->masks.dp_hash |= mask; | |
3760 | bucket = group_best_live_bucket(ctx, group, basis); | |
3761 | if (bucket) { | |
3762 | xlate_group_bucket(ctx, bucket); | |
3763 | xlate_group_stats(ctx, group, bucket); | |
3764 | } | |
3765 | } | |
3766 | } | |
3767 | } | |
3768 | ||
7565c3e4 SH |
3769 | static void |
3770 | xlate_select_group(struct xlate_ctx *ctx, struct group_dpif *group) | |
3771 | { | |
07a3cd5c | 3772 | const char *selection_method = group->up.props.selection_method; |
7565c3e4 | 3773 | |
e12ec36b SH |
3774 | /* Select groups may access flow keys beyond L2 in order to |
3775 | * select a bucket. Recirculate as appropriate to make this possible. | |
3776 | */ | |
3777 | if (ctx->was_mpls) { | |
3778 | ctx_trigger_freeze(ctx); | |
3779 | } | |
3780 | ||
7565c3e4 SH |
3781 | if (selection_method[0] == '\0') { |
3782 | xlate_default_select_group(ctx, group); | |
0c4b9393 SH |
3783 | } else if (!strcasecmp("hash", selection_method)) { |
3784 | xlate_hash_fields_select_group(ctx, group); | |
53cc166a JR |
3785 | } else if (!strcasecmp("dp_hash", selection_method)) { |
3786 | xlate_dp_hash_select_group(ctx, group); | |
7565c3e4 SH |
3787 | } else { |
3788 | /* Parsing of groups should ensure this never happens */ | |
3789 | OVS_NOT_REACHED(); | |
3790 | } | |
3791 | } | |
3792 | ||
f4fb341b SH |
3793 | static void |
3794 | xlate_group_action__(struct xlate_ctx *ctx, struct group_dpif *group) | |
3795 | { | |
0eb48fe1 | 3796 | bool was_in_group = ctx->in_group; |
5a070238 BP |
3797 | ctx->in_group = true; |
3798 | ||
07a3cd5c | 3799 | switch (group->up.type) { |
f4fb341b SH |
3800 | case OFPGT11_ALL: |
3801 | case OFPGT11_INDIRECT: | |
3802 | xlate_all_group(ctx, group); | |
3803 | break; | |
3804 | case OFPGT11_SELECT: | |
fe7e5749 | 3805 | xlate_select_group(ctx, group); |
f4fb341b | 3806 | break; |
dd8cd4b4 SH |
3807 | case OFPGT11_FF: |
3808 | xlate_ff_group(ctx, group); | |
3809 | break; | |
f4fb341b | 3810 | default: |
428b2edd | 3811 | OVS_NOT_REACHED(); |
f4fb341b | 3812 | } |
5a070238 | 3813 | |
0eb48fe1 | 3814 | ctx->in_group = was_in_group; |
f4fb341b SH |
3815 | } |
3816 | ||
3817 | static bool | |
3818 | xlate_group_action(struct xlate_ctx *ctx, uint32_t group_id) | |
3819 | { | |
0eb48fe1 | 3820 | if (xlate_resubmit_resource_check(ctx)) { |
f4fb341b | 3821 | struct group_dpif *group; |
f4fb341b | 3822 | |
76973237 JR |
3823 | /* Take ref only if xcache exists. */ |
3824 | group = group_dpif_lookup(ctx->xbridge->ofproto, group_id, | |
1f4a8933 | 3825 | ctx->xin->tables_version, ctx->xin->xcache); |
db88b35c JR |
3826 | if (!group) { |
3827 | /* XXX: Should set ctx->error ? */ | |
2d9b49dd BP |
3828 | xlate_report(ctx, OFT_WARN, "output to nonexistent group %"PRIu32, |
3829 | group_id); | |
f4fb341b SH |
3830 | return true; |
3831 | } | |
db88b35c | 3832 | xlate_group_action__(ctx, group); |
f4fb341b SH |
3833 | } |
3834 | ||
3835 | return false; | |
3836 | } | |
3837 | ||
9583bc14 EJ |
3838 | static void |
3839 | xlate_ofpact_resubmit(struct xlate_ctx *ctx, | |
3840 | const struct ofpact_resubmit *resubmit) | |
3841 | { | |
4e022ec0 | 3842 | ofp_port_t in_port; |
9583bc14 | 3843 | uint8_t table_id; |
adcf00ba AZ |
3844 | bool may_packet_in = false; |
3845 | bool honor_table_miss = false; | |
3846 | ||
3847 | if (ctx->rule && rule_dpif_is_internal(ctx->rule)) { | |
3848 | /* Still allow missed packets to be sent to the controller | |
3849 | * if resubmitting from an internal table. */ | |
3850 | may_packet_in = true; | |
3851 | honor_table_miss = true; | |
3852 | } | |
9583bc14 EJ |
3853 | |
3854 | in_port = resubmit->in_port; | |
3855 | if (in_port == OFPP_IN_PORT) { | |
4e022ec0 | 3856 | in_port = ctx->xin->flow.in_port.ofp_port; |
9583bc14 EJ |
3857 | } |
3858 | ||
3859 | table_id = resubmit->table_id; | |
3860 | if (table_id == 255) { | |
3861 | table_id = ctx->table_id; | |
3862 | } | |
3863 | ||
adcf00ba | 3864 | xlate_table_action(ctx, in_port, table_id, may_packet_in, |
2cd20955 | 3865 | honor_table_miss, resubmit->with_ct_orig); |
9583bc14 EJ |
3866 | } |
3867 | ||
3868 | static void | |
3869 | flood_packets(struct xlate_ctx *ctx, bool all) | |
3870 | { | |
46c88433 | 3871 | const struct xport *xport; |
9583bc14 | 3872 | |
46c88433 EJ |
3873 | HMAP_FOR_EACH (xport, ofp_node, &ctx->xbridge->xports) { |
3874 | if (xport->ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
3875 | continue; |
3876 | } | |
3877 | ||
3878 | if (all) { | |
e93ef1c7 | 3879 | compose_output_action__(ctx, xport->ofp_port, NULL, false); |
46c88433 | 3880 | } else if (!(xport->config & OFPUTIL_PC_NO_FLOOD)) { |
e93ef1c7 | 3881 | compose_output_action(ctx, xport->ofp_port, NULL); |
9583bc14 EJ |
3882 | } |
3883 | } | |
3884 | ||
2031ef97 | 3885 | ctx->nf_output_iface = NF_OUT_FLOOD; |
9583bc14 EJ |
3886 | } |
3887 | ||
27d931da AZ |
3888 | /* Copy and reformat a partially xlated odp actions to a new |
3889 | * odp actions list in 'b', so that the new actions list | |
3890 | * can be executed by odp_execute_actions. | |
3891 | * | |
3892 | * When xlate using nested odp actions, such as sample and clone, | |
3893 | * the nested action created by nl_msg_start_nested() may not | |
3894 | * have been properly closed yet, thus can not be executed | |
3895 | * directly. | |
3896 | * | |
3897 | * Since unclosed nested action has to be last action, it can be | |
3898 | * fixed by skipping the outer header, and treating the actions within | |
3899 | * as if they are outside the nested attribute since the effect | |
3900 | * of executing them on packet is the same. | |
3901 | * | |
3902 | * As an optimization, a fully closed 'sample' or 'clone' action | |
3903 | * is skipped since their execution has no effect to the packet. | |
3904 | * | |
3905 | * Returns true if success. 'b' contains the new actions list. | |
3906 | * The caller is responsible for disposing 'b'. | |
3907 | * | |
3908 | * Returns false if error, 'b' has been freed already. */ | |
3909 | static bool | |
3910 | xlate_fixup_actions(struct ofpbuf *b, const struct nlattr *actions, | |
3911 | size_t actions_len) | |
3912 | { | |
3913 | const struct nlattr *a; | |
3914 | unsigned int left; | |
3915 | ||
3916 | NL_ATTR_FOR_EACH_UNSAFE (a, left, actions, actions_len) { | |
3917 | int type = nl_attr_type(a); | |
3918 | ||
3919 | switch ((enum ovs_action_attr) type) { | |
3920 | case OVS_ACTION_ATTR_HASH: | |
3921 | case OVS_ACTION_ATTR_PUSH_VLAN: | |
3922 | case OVS_ACTION_ATTR_POP_VLAN: | |
3923 | case OVS_ACTION_ATTR_PUSH_MPLS: | |
3924 | case OVS_ACTION_ATTR_POP_MPLS: | |
3925 | case OVS_ACTION_ATTR_SET: | |
3926 | case OVS_ACTION_ATTR_SET_MASKED: | |
3927 | case OVS_ACTION_ATTR_TRUNC: | |
3928 | case OVS_ACTION_ATTR_OUTPUT: | |
3929 | case OVS_ACTION_ATTR_TUNNEL_PUSH: | |
3930 | case OVS_ACTION_ATTR_TUNNEL_POP: | |
3931 | case OVS_ACTION_ATTR_USERSPACE: | |
3932 | case OVS_ACTION_ATTR_RECIRC: | |
3933 | case OVS_ACTION_ATTR_CT: | |
0d11fc52 JR |
3934 | case OVS_ACTION_ATTR_PUSH_ETH: |
3935 | case OVS_ACTION_ATTR_POP_ETH: | |
5dddf960 | 3936 | case OVS_ACTION_ATTR_METER: |
27d931da AZ |
3937 | ofpbuf_put(b, a, nl_attr_len_pad(a, left)); |
3938 | break; | |
3939 | ||
3940 | case OVS_ACTION_ATTR_CLONE: | |
3941 | /* If the clone action has been fully xlated, it can | |
3942 | * be skipped, since any actions executed within clone | |
3943 | * do not affect the current packet. | |
3944 | * | |
3945 | * When xlating actions within clone, the clone action, | |
3946 | * because it is an nested netlink attribute, do not have | |
3947 | * a valid 'nla_len'; it will be zero instead. Skip | |
3948 | * the clone header to find the start of the actions | |
3949 | * enclosed. Treat those actions as if they are written | |
3950 | * outside of clone. */ | |
3951 | if (!a->nla_len) { | |
3952 | bool ok; | |
3953 | if (left < NLA_HDRLEN) { | |
3954 | goto error; | |
3955 | } | |
3956 | ||
3957 | ok = xlate_fixup_actions(b, nl_attr_get_unspec(a, 0), | |
3958 | left - NLA_HDRLEN); | |
3959 | if (!ok) { | |
3960 | goto error; | |
3961 | } | |
3962 | } | |
3963 | break; | |
3964 | ||
3965 | case OVS_ACTION_ATTR_SAMPLE: | |
3966 | if (!a->nla_len) { | |
3967 | bool ok; | |
3968 | if (left < NLA_HDRLEN) { | |
3969 | goto error; | |
3970 | } | |
3971 | const struct nlattr *attr = nl_attr_get_unspec(a, 0); | |
3972 | left -= NLA_HDRLEN; | |
3973 | ||
3974 | while (left > 0 && | |
3975 | nl_attr_type(attr) != OVS_SAMPLE_ATTR_ACTIONS) { | |
3976 | /* Only OVS_SAMPLE_ATTR_ACTIONS can have unclosed | |
3977 | * nested netlink attribute. */ | |
3978 | if (!attr->nla_len) { | |
3979 | goto error; | |
3980 | } | |
3981 | ||
3982 | left -= NLA_ALIGN(attr->nla_len); | |
3983 | attr = nl_attr_next(attr); | |
3984 | } | |
3985 | ||
3986 | if (left < NLA_HDRLEN) { | |
3987 | goto error; | |
3988 | } | |
3989 | ||
3990 | ok = xlate_fixup_actions(b, nl_attr_get_unspec(attr, 0), | |
3991 | left - NLA_HDRLEN); | |
3992 | if (!ok) { | |
3993 | goto error; | |
3994 | } | |
3995 | } | |
3996 | break; | |
3997 | ||
3998 | case OVS_ACTION_ATTR_UNSPEC: | |
3999 | case __OVS_ACTION_ATTR_MAX: | |
4000 | OVS_NOT_REACHED(); | |
4001 | } | |
4002 | } | |
4003 | ||
4004 | return true; | |
4005 | ||
4006 | error: | |
4007 | ofpbuf_delete(b); | |
4008 | return false; | |
4009 | } | |
4010 | ||
4011 | static bool | |
4012 | xlate_execute_odp_actions(struct dp_packet *packet, | |
4013 | const struct nlattr *actions, int actions_len) | |
4014 | { | |
4015 | struct dp_packet_batch batch; | |
4016 | struct ofpbuf *b = ofpbuf_new(actions_len); | |
4017 | ||
4018 | if (!xlate_fixup_actions(b, actions, actions_len)) { | |
4019 | return false; | |
4020 | } | |
4021 | ||
4022 | dp_packet_batch_init_packet(&batch, packet); | |
4023 | odp_execute_actions(NULL, &batch, false, b->data, b->size, NULL); | |
4024 | ofpbuf_delete(b); | |
4025 | ||
4026 | return true; | |
4027 | } | |
4028 | ||
9583bc14 EJ |
4029 | static void |
4030 | execute_controller_action(struct xlate_ctx *ctx, int len, | |
4031 | enum ofp_packet_in_reason reason, | |
bdcad671 BP |
4032 | uint16_t controller_id, |
4033 | const uint8_t *userdata, size_t userdata_len) | |
9583bc14 | 4034 | { |
e14deea0 | 4035 | struct dp_packet *packet; |
9583bc14 | 4036 | |
04594cd5 | 4037 | ctx->xout->slow |= SLOW_CONTROLLER; |
b476e2f2 | 4038 | xlate_commit_actions(ctx); |
9583bc14 EJ |
4039 | if (!ctx->xin->packet) { |
4040 | return; | |
4041 | } | |
4042 | ||
df70a773 JR |
4043 | if (!ctx->xin->allow_side_effects && !ctx->xin->xcache) { |
4044 | return; | |
4045 | } | |
4046 | ||
cf62fa4c | 4047 | packet = dp_packet_clone(ctx->xin->packet); |
27d931da AZ |
4048 | if (!xlate_execute_odp_actions(packet, ctx->odp_actions->data, |
4049 | ctx->odp_actions->size)) { | |
4050 | xlate_report_error(ctx, "Failed to execute controller action"); | |
4051 | dp_packet_delete(packet); | |
4052 | return; | |
4053 | } | |
9bfe9334 BP |
4054 | /* A packet sent by an action in a table-miss rule is considered an |
4055 | * explicit table miss. OpenFlow before 1.3 doesn't have that concept so | |
4056 | * it will get translated back to OFPR_ACTION for those versions. */ | |
4057 | if (reason == OFPR_ACTION | |
07a3cd5c | 4058 | && ctx->rule && rule_is_table_miss(&ctx->rule->up)) { |
9bfe9334 BP |
4059 | reason = OFPR_EXPLICIT_MISS; |
4060 | } | |
4061 | ||
4062 | size_t packet_len = dp_packet_size(packet); | |
0fb7792a | 4063 | |
a2b53dec BP |
4064 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
4065 | *am = (struct ofproto_async_msg) { | |
9bfe9334 | 4066 | .controller_id = controller_id, |
a2b53dec BP |
4067 | .oam = OAM_PACKET_IN, |
4068 | .pin = { | |
4069 | .up = { | |
77ab5fd2 BP |
4070 | .public = { |
4071 | .packet = dp_packet_steal_data(packet), | |
4072 | .packet_len = packet_len, | |
4073 | .reason = reason, | |
4074 | .table_id = ctx->table_id, | |
4075 | .cookie = ctx->rule_cookie, | |
4076 | .userdata = (userdata_len | |
4077 | ? xmemdup(userdata, userdata_len) | |
4078 | : NULL), | |
4079 | .userdata_len = userdata_len, | |
4080 | } | |
a2b53dec BP |
4081 | }, |
4082 | .max_len = len, | |
9bfe9334 | 4083 | }, |
9bfe9334 | 4084 | }; |
77ab5fd2 | 4085 | flow_get_metadata(&ctx->xin->flow, &am->pin.up.public.flow_metadata); |
9583bc14 | 4086 | |
df70a773 JR |
4087 | /* Async messages are only sent once, so if we send one now, no |
4088 | * xlate cache entry is created. */ | |
4089 | if (ctx->xin->allow_side_effects) { | |
4090 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); | |
4091 | } else /* xcache */ { | |
4092 | struct xc_entry *entry; | |
4093 | ||
4094 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_CONTROLLER); | |
4095 | entry->controller.ofproto = ctx->xbridge->ofproto; | |
4096 | entry->controller.am = am; | |
4097 | } | |
3b4fff43 RM |
4098 | |
4099 | dp_packet_delete(packet); | |
9583bc14 EJ |
4100 | } |
4101 | ||
7bbdd84f | 4102 | static void |
77ab5fd2 | 4103 | emit_continuation(struct xlate_ctx *ctx, const struct frozen_state *state) |
7bbdd84f | 4104 | { |
df70a773 JR |
4105 | if (!ctx->xin->allow_side_effects && !ctx->xin->xcache) { |
4106 | return; | |
4107 | } | |
4108 | ||
77ab5fd2 BP |
4109 | struct ofproto_async_msg *am = xmalloc(sizeof *am); |
4110 | *am = (struct ofproto_async_msg) { | |
4111 | .controller_id = ctx->pause->controller_id, | |
4112 | .oam = OAM_PACKET_IN, | |
4113 | .pin = { | |
4114 | .up = { | |
4115 | .public = { | |
4116 | .userdata = xmemdup(ctx->pause->userdata, | |
4117 | ctx->pause->userdata_len), | |
4118 | .userdata_len = ctx->pause->userdata_len, | |
4119 | .packet = xmemdup(dp_packet_data(ctx->xin->packet), | |
4120 | dp_packet_size(ctx->xin->packet)), | |
4121 | .packet_len = dp_packet_size(ctx->xin->packet), | |
0b024e49 | 4122 | .reason = ctx->pause->reason, |
77ab5fd2 | 4123 | }, |
07a3cd5c | 4124 | .bridge = ctx->xbridge->ofproto->uuid, |
84cf3c1f JR |
4125 | .stack = xmemdup(state->stack, state->stack_size), |
4126 | .stack_size = state->stack_size, | |
77ab5fd2 BP |
4127 | .mirrors = state->mirrors, |
4128 | .conntracked = state->conntracked, | |
4129 | .actions = xmemdup(state->ofpacts, state->ofpacts_len), | |
4130 | .actions_len = state->ofpacts_len, | |
4131 | .action_set = xmemdup(state->action_set, | |
4132 | state->action_set_len), | |
4133 | .action_set_len = state->action_set_len, | |
4134 | }, | |
4135 | .max_len = UINT16_MAX, | |
4136 | }, | |
4137 | }; | |
4138 | flow_get_metadata(&ctx->xin->flow, &am->pin.up.public.flow_metadata); | |
df70a773 JR |
4139 | |
4140 | /* Async messages are only sent once, so if we send one now, no | |
4141 | * xlate cache entry is created. */ | |
4142 | if (ctx->xin->allow_side_effects) { | |
4143 | ofproto_dpif_send_async_msg(ctx->xbridge->ofproto, am); | |
4144 | } else /* xcache */ { | |
4145 | struct xc_entry *entry; | |
4146 | ||
4147 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_CONTROLLER); | |
4148 | entry->controller.ofproto = ctx->xbridge->ofproto; | |
4149 | entry->controller.am = am; | |
4150 | } | |
77ab5fd2 | 4151 | } |
7bbdd84f | 4152 | |
77ab5fd2 BP |
4153 | static void |
4154 | finish_freezing__(struct xlate_ctx *ctx, uint8_t table) | |
4155 | { | |
1d361a81 | 4156 | ovs_assert(ctx->freezing); |
7bbdd84f | 4157 | |
1d361a81 | 4158 | struct frozen_state state = { |
07659514 | 4159 | .table_id = table, |
07a3cd5c | 4160 | .ofproto_uuid = ctx->xbridge->ofproto->uuid, |
5c1b2314 | 4161 | .stack = ctx->stack.data, |
84cf3c1f | 4162 | .stack_size = ctx->stack.size, |
29bae541 | 4163 | .mirrors = ctx->mirrors, |
07659514 | 4164 | .conntracked = ctx->conntracked, |
1d361a81 BP |
4165 | .ofpacts = ctx->frozen_actions.data, |
4166 | .ofpacts_len = ctx->frozen_actions.size, | |
417509fa | 4167 | .action_set = ctx->action_set.data, |
8a5fb3b4 | 4168 | .action_set_len = ctx->action_set.size, |
2082425c | 4169 | }; |
77ab5fd2 | 4170 | frozen_metadata_from_flow(&state.metadata, &ctx->xin->flow); |
2082425c | 4171 | |
77ab5fd2 BP |
4172 | if (ctx->pause) { |
4173 | if (ctx->xin->packet) { | |
4174 | emit_continuation(ctx, &state); | |
4175 | } | |
4176 | } else { | |
4177 | /* Allocate a unique recirc id for the given metadata state in the | |
4178 | * flow. An existing id, with a new reference to the corresponding | |
4179 | * recirculation context, will be returned if possible. | |
4180 | * The life-cycle of this recirc id is managed by associating it | |
4181 | * with the udpif key ('ukey') created for each new datapath flow. */ | |
4182 | uint32_t id = recirc_alloc_id_ctx(&state); | |
4183 | if (!id) { | |
2d9b49dd | 4184 | xlate_report_error(ctx, "Failed to allocate recirculation id"); |
77ab5fd2 BP |
4185 | ctx->error = XLATE_NO_RECIRCULATION_CONTEXT; |
4186 | return; | |
4187 | } | |
4188 | recirc_refs_add(&ctx->xout->recircs, id); | |
7bbdd84f | 4189 | |
53cc166a JR |
4190 | if (ctx->recirc_update_dp_hash) { |
4191 | struct ovs_action_hash *act_hash; | |
4192 | ||
4193 | /* Hash action. */ | |
4194 | act_hash = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
4195 | OVS_ACTION_ATTR_HASH, | |
4196 | sizeof *act_hash); | |
4197 | act_hash->hash_alg = OVS_HASH_ALG_L4; /* Make configurable. */ | |
4198 | act_hash->hash_basis = 0; /* Make configurable. */ | |
4199 | } | |
77ab5fd2 BP |
4200 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_RECIRC, id); |
4201 | } | |
e672ff9b | 4202 | |
1d361a81 BP |
4203 | /* Undo changes done by freezing. */ |
4204 | ctx_cancel_freeze(ctx); | |
7bbdd84f SH |
4205 | } |
4206 | ||
1d361a81 | 4207 | /* Called only when we're freezing. */ |
07659514 | 4208 | static void |
77ab5fd2 | 4209 | finish_freezing(struct xlate_ctx *ctx) |
07659514 JS |
4210 | { |
4211 | xlate_commit_actions(ctx); | |
77ab5fd2 | 4212 | finish_freezing__(ctx, 0); |
07659514 JS |
4213 | } |
4214 | ||
e37b8437 JS |
4215 | /* Fork the pipeline here. The current packet will continue processing the |
4216 | * current action list. A clone of the current packet will recirculate, skip | |
4217 | * the remainder of the current action list and asynchronously resume pipeline | |
4218 | * processing in 'table' with the current metadata and action set. */ | |
4219 | static void | |
4220 | compose_recirculate_and_fork(struct xlate_ctx *ctx, uint8_t table) | |
4221 | { | |
1d361a81 | 4222 | ctx->freezing = true; |
77ab5fd2 | 4223 | finish_freezing__(ctx, table); |
e37b8437 JS |
4224 | } |
4225 | ||
8bfd0fda BP |
4226 | static void |
4227 | compose_mpls_push_action(struct xlate_ctx *ctx, struct ofpact_push_mpls *mpls) | |
9583bc14 | 4228 | { |
33bf9176 | 4229 | struct flow *flow = &ctx->xin->flow; |
8bfd0fda | 4230 | int n; |
33bf9176 | 4231 | |
8bfd0fda | 4232 | ovs_assert(eth_type_mpls(mpls->ethertype)); |
b0a17866 | 4233 | |
49a73e0c | 4234 | n = flow_count_mpls_labels(flow, ctx->wc); |
8bfd0fda | 4235 | if (!n) { |
704bb0bf | 4236 | xlate_commit_actions(ctx); |
8bfd0fda BP |
4237 | } else if (n >= FLOW_MAX_MPLS_LABELS) { |
4238 | if (ctx->xin->packet != NULL) { | |
2d9b49dd BP |
4239 | xlate_report_error(ctx, "dropping packet on which an MPLS push " |
4240 | "action can't be performed as it would have " | |
4241 | "more MPLS LSEs than the %d supported.", | |
4242 | FLOW_MAX_MPLS_LABELS); | |
9583bc14 | 4243 | } |
fff1b9c0 | 4244 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
8bfd0fda | 4245 | return; |
9583bc14 | 4246 | } |
b0a17866 | 4247 | |
742c0ac3 JR |
4248 | /* Update flow's MPLS stack, and clear L3/4 fields to mark them invalid. */ |
4249 | flow_push_mpls(flow, n, mpls->ethertype, ctx->wc, true); | |
9583bc14 EJ |
4250 | } |
4251 | ||
8bfd0fda | 4252 | static void |
9cfef3d0 | 4253 | compose_mpls_pop_action(struct xlate_ctx *ctx, ovs_be16 eth_type) |
9583bc14 | 4254 | { |
8bfd0fda | 4255 | struct flow *flow = &ctx->xin->flow; |
49a73e0c | 4256 | int n = flow_count_mpls_labels(flow, ctx->wc); |
33bf9176 | 4257 | |
49a73e0c | 4258 | if (flow_pop_mpls(flow, n, eth_type, ctx->wc)) { |
8bf009bf | 4259 | if (!eth_type_mpls(eth_type) && ctx->xbridge->support.odp.recirc) { |
e12ec36b | 4260 | ctx->was_mpls = true; |
7bbdd84f SH |
4261 | } |
4262 | } else if (n >= FLOW_MAX_MPLS_LABELS) { | |
8bfd0fda | 4263 | if (ctx->xin->packet != NULL) { |
2d9b49dd BP |
4264 | xlate_report_error(ctx, "dropping packet on which an " |
4265 | "MPLS pop action can't be performed as it has " | |
4266 | "more MPLS LSEs than the %d supported.", | |
4267 | FLOW_MAX_MPLS_LABELS); | |
8bfd0fda | 4268 | } |
fff1b9c0 | 4269 | ctx->error = XLATE_TOO_MANY_MPLS_LABELS; |
1520ef4f | 4270 | ofpbuf_clear(ctx->odp_actions); |
9583bc14 EJ |
4271 | } |
4272 | } | |
4273 | ||
4274 | static bool | |
4275 | compose_dec_ttl(struct xlate_ctx *ctx, struct ofpact_cnt_ids *ids) | |
4276 | { | |
33bf9176 BP |
4277 | struct flow *flow = &ctx->xin->flow; |
4278 | ||
4279 | if (!is_ip_any(flow)) { | |
9583bc14 EJ |
4280 | return false; |
4281 | } | |
4282 | ||
49a73e0c | 4283 | ctx->wc->masks.nw_ttl = 0xff; |
33bf9176 BP |
4284 | if (flow->nw_ttl > 1) { |
4285 | flow->nw_ttl--; | |
9583bc14 EJ |
4286 | return false; |
4287 | } else { | |
4288 | size_t i; | |
4289 | ||
4290 | for (i = 0; i < ids->n_controllers; i++) { | |
4291 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, | |
bdcad671 | 4292 | ids->cnt_ids[i], NULL, 0); |
9583bc14 EJ |
4293 | } |
4294 | ||
4295 | /* Stop processing for current table. */ | |
2d9b49dd BP |
4296 | xlate_report(ctx, OFT_WARN, "IPv%d decrement TTL exception", |
4297 | flow->dl_type == htons(ETH_TYPE_IP) ? 4 : 6); | |
9583bc14 EJ |
4298 | return true; |
4299 | } | |
4300 | } | |
4301 | ||
8bfd0fda | 4302 | static void |
097d4939 JR |
4303 | compose_set_mpls_label_action(struct xlate_ctx *ctx, ovs_be32 label) |
4304 | { | |
8bfd0fda | 4305 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4306 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_LABEL_MASK); |
8bfd0fda | 4307 | set_mpls_lse_label(&ctx->xin->flow.mpls_lse[0], label); |
097d4939 | 4308 | } |
097d4939 JR |
4309 | } |
4310 | ||
8bfd0fda | 4311 | static void |
097d4939 JR |
4312 | compose_set_mpls_tc_action(struct xlate_ctx *ctx, uint8_t tc) |
4313 | { | |
8bfd0fda | 4314 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4315 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TC_MASK); |
8bfd0fda | 4316 | set_mpls_lse_tc(&ctx->xin->flow.mpls_lse[0], tc); |
097d4939 | 4317 | } |
097d4939 JR |
4318 | } |
4319 | ||
8bfd0fda | 4320 | static void |
9cfef3d0 | 4321 | compose_set_mpls_ttl_action(struct xlate_ctx *ctx, uint8_t ttl) |
9583bc14 | 4322 | { |
8bfd0fda | 4323 | if (eth_type_mpls(ctx->xin->flow.dl_type)) { |
49a73e0c | 4324 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda | 4325 | set_mpls_lse_ttl(&ctx->xin->flow.mpls_lse[0], ttl); |
b0a17866 | 4326 | } |
9583bc14 EJ |
4327 | } |
4328 | ||
4329 | static bool | |
9cfef3d0 | 4330 | compose_dec_mpls_ttl_action(struct xlate_ctx *ctx) |
9583bc14 | 4331 | { |
33bf9176 | 4332 | struct flow *flow = &ctx->xin->flow; |
1dd35f8a | 4333 | |
8bfd0fda | 4334 | if (eth_type_mpls(flow->dl_type)) { |
22d38fca JR |
4335 | uint8_t ttl = mpls_lse_to_ttl(flow->mpls_lse[0]); |
4336 | ||
49a73e0c | 4337 | ctx->wc->masks.mpls_lse[0] |= htonl(MPLS_TTL_MASK); |
8bfd0fda BP |
4338 | if (ttl > 1) { |
4339 | ttl--; | |
4340 | set_mpls_lse_ttl(&flow->mpls_lse[0], ttl); | |
4341 | return false; | |
4342 | } else { | |
bdcad671 BP |
4343 | execute_controller_action(ctx, UINT16_MAX, OFPR_INVALID_TTL, 0, |
4344 | NULL, 0); | |
8bfd0fda | 4345 | } |
9583bc14 | 4346 | } |
22d38fca JR |
4347 | |
4348 | /* Stop processing for current table. */ | |
2d9b49dd | 4349 | xlate_report(ctx, OFT_WARN, "MPLS decrement TTL exception"); |
22d38fca | 4350 | return true; |
9583bc14 EJ |
4351 | } |
4352 | ||
4353 | static void | |
4354 | xlate_output_action(struct xlate_ctx *ctx, | |
4e022ec0 | 4355 | ofp_port_t port, uint16_t max_len, bool may_packet_in) |
9583bc14 | 4356 | { |
2031ef97 | 4357 | ofp_port_t prev_nf_output_iface = ctx->nf_output_iface; |
9583bc14 | 4358 | |
2031ef97 | 4359 | ctx->nf_output_iface = NF_OUT_DROP; |
9583bc14 EJ |
4360 | |
4361 | switch (port) { | |
4362 | case OFPP_IN_PORT: | |
e93ef1c7 | 4363 | compose_output_action(ctx, ctx->xin->flow.in_port.ofp_port, NULL); |
9583bc14 EJ |
4364 | break; |
4365 | case OFPP_TABLE: | |
4e022ec0 | 4366 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2cd20955 | 4367 | 0, may_packet_in, true, false); |
9583bc14 EJ |
4368 | break; |
4369 | case OFPP_NORMAL: | |
4370 | xlate_normal(ctx); | |
4371 | break; | |
4372 | case OFPP_FLOOD: | |
4373 | flood_packets(ctx, false); | |
4374 | break; | |
4375 | case OFPP_ALL: | |
4376 | flood_packets(ctx, true); | |
4377 | break; | |
4378 | case OFPP_CONTROLLER: | |
3a11fd5b | 4379 | execute_controller_action(ctx, max_len, |
029ca940 SS |
4380 | (ctx->in_group ? OFPR_GROUP |
4381 | : ctx->in_action_set ? OFPR_ACTION_SET | |
4382 | : OFPR_ACTION), | |
bdcad671 | 4383 | 0, NULL, 0); |
9583bc14 EJ |
4384 | break; |
4385 | case OFPP_NONE: | |
4386 | break; | |
4387 | case OFPP_LOCAL: | |
4388 | default: | |
4e022ec0 | 4389 | if (port != ctx->xin->flow.in_port.ofp_port) { |
e93ef1c7 | 4390 | compose_output_action(ctx, port, NULL); |
9583bc14 | 4391 | } else { |
2d9b49dd | 4392 | xlate_report(ctx, OFT_WARN, "skipping output to input port"); |
9583bc14 EJ |
4393 | } |
4394 | break; | |
4395 | } | |
4396 | ||
4397 | if (prev_nf_output_iface == NF_OUT_FLOOD) { | |
2031ef97 BP |
4398 | ctx->nf_output_iface = NF_OUT_FLOOD; |
4399 | } else if (ctx->nf_output_iface == NF_OUT_DROP) { | |
4400 | ctx->nf_output_iface = prev_nf_output_iface; | |
9583bc14 | 4401 | } else if (prev_nf_output_iface != NF_OUT_DROP && |
2031ef97 BP |
4402 | ctx->nf_output_iface != NF_OUT_FLOOD) { |
4403 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
4404 | } |
4405 | } | |
4406 | ||
4407 | static void | |
4408 | xlate_output_reg_action(struct xlate_ctx *ctx, | |
4409 | const struct ofpact_output_reg *or) | |
4410 | { | |
4411 | uint64_t port = mf_get_subfield(&or->src, &ctx->xin->flow); | |
4412 | if (port <= UINT16_MAX) { | |
2d9b49dd BP |
4413 | xlate_report(ctx, OFT_DETAIL, "output port is %"PRIu64, port); |
4414 | ||
9583bc14 EJ |
4415 | union mf_subvalue value; |
4416 | ||
4417 | memset(&value, 0xff, sizeof value); | |
49a73e0c | 4418 | mf_write_subfield_flow(&or->src, &value, &ctx->wc->masks); |
2d9b49dd BP |
4419 | xlate_output_action(ctx, u16_to_ofp(port), or->max_len, false); |
4420 | } else { | |
4421 | xlate_report(ctx, OFT_WARN, "output port %"PRIu64" is out of range", | |
4422 | port); | |
9583bc14 EJ |
4423 | } |
4424 | } | |
4425 | ||
aaca4fe0 WT |
4426 | static void |
4427 | xlate_output_trunc_action(struct xlate_ctx *ctx, | |
4428 | ofp_port_t port, uint32_t max_len) | |
4429 | { | |
4430 | bool support_trunc = ctx->xbridge->support.trunc; | |
4431 | struct ovs_action_trunc *trunc; | |
4432 | char name[OFP_MAX_PORT_NAME_LEN]; | |
4433 | ||
4434 | switch (port) { | |
4435 | case OFPP_TABLE: | |
4436 | case OFPP_NORMAL: | |
4437 | case OFPP_FLOOD: | |
4438 | case OFPP_ALL: | |
4439 | case OFPP_CONTROLLER: | |
4440 | case OFPP_NONE: | |
4441 | ofputil_port_to_string(port, name, sizeof name); | |
2d9b49dd BP |
4442 | xlate_report(ctx, OFT_WARN, |
4443 | "output_trunc does not support port: %s", name); | |
aaca4fe0 WT |
4444 | break; |
4445 | case OFPP_LOCAL: | |
4446 | case OFPP_IN_PORT: | |
4447 | default: | |
4448 | if (port != ctx->xin->flow.in_port.ofp_port) { | |
4449 | const struct xport *xport = get_ofp_port(ctx->xbridge, port); | |
4450 | ||
4451 | if (xport == NULL || xport->odp_port == ODPP_NONE) { | |
4452 | /* Since truncate happens at its following output action, if | |
4453 | * the output port is a patch port, the behavior is somehow | |
4454 | * unpredicable. For simpilicity, disallow this case. */ | |
4455 | ofputil_port_to_string(port, name, sizeof name); | |
2d9b49dd BP |
4456 | xlate_report_error(ctx, "output_trunc does not support " |
4457 | "patch port %s", name); | |
aaca4fe0 WT |
4458 | break; |
4459 | } | |
4460 | ||
4461 | trunc = nl_msg_put_unspec_uninit(ctx->odp_actions, | |
4462 | OVS_ACTION_ATTR_TRUNC, | |
4463 | sizeof *trunc); | |
4464 | trunc->max_len = max_len; | |
4465 | xlate_output_action(ctx, port, max_len, false); | |
4466 | if (!support_trunc) { | |
4467 | ctx->xout->slow |= SLOW_ACTION; | |
4468 | } | |
4469 | } else { | |
2d9b49dd | 4470 | xlate_report(ctx, OFT_WARN, "skipping output to input port"); |
aaca4fe0 WT |
4471 | } |
4472 | break; | |
4473 | } | |
4474 | } | |
4475 | ||
9583bc14 EJ |
4476 | static void |
4477 | xlate_enqueue_action(struct xlate_ctx *ctx, | |
4478 | const struct ofpact_enqueue *enqueue) | |
4479 | { | |
4e022ec0 | 4480 | ofp_port_t ofp_port = enqueue->port; |
9583bc14 EJ |
4481 | uint32_t queue_id = enqueue->queue; |
4482 | uint32_t flow_priority, priority; | |
4483 | int error; | |
4484 | ||
4485 | /* Translate queue to priority. */ | |
89a8a7f0 | 4486 | error = dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &priority); |
9583bc14 EJ |
4487 | if (error) { |
4488 | /* Fall back to ordinary output action. */ | |
4489 | xlate_output_action(ctx, enqueue->port, 0, false); | |
4490 | return; | |
4491 | } | |
4492 | ||
4493 | /* Check output port. */ | |
4494 | if (ofp_port == OFPP_IN_PORT) { | |
4e022ec0 AW |
4495 | ofp_port = ctx->xin->flow.in_port.ofp_port; |
4496 | } else if (ofp_port == ctx->xin->flow.in_port.ofp_port) { | |
9583bc14 EJ |
4497 | return; |
4498 | } | |
4499 | ||
4500 | /* Add datapath actions. */ | |
4501 | flow_priority = ctx->xin->flow.skb_priority; | |
4502 | ctx->xin->flow.skb_priority = priority; | |
e93ef1c7 | 4503 | compose_output_action(ctx, ofp_port, NULL); |
9583bc14 EJ |
4504 | ctx->xin->flow.skb_priority = flow_priority; |
4505 | ||
4506 | /* Update NetFlow output port. */ | |
2031ef97 BP |
4507 | if (ctx->nf_output_iface == NF_OUT_DROP) { |
4508 | ctx->nf_output_iface = ofp_port; | |
4509 | } else if (ctx->nf_output_iface != NF_OUT_FLOOD) { | |
4510 | ctx->nf_output_iface = NF_OUT_MULTI; | |
9583bc14 EJ |
4511 | } |
4512 | } | |
4513 | ||
4514 | static void | |
4515 | xlate_set_queue_action(struct xlate_ctx *ctx, uint32_t queue_id) | |
4516 | { | |
4517 | uint32_t skb_priority; | |
4518 | ||
89a8a7f0 | 4519 | if (!dpif_queue_to_priority(ctx->xbridge->dpif, queue_id, &skb_priority)) { |
9583bc14 EJ |
4520 | ctx->xin->flow.skb_priority = skb_priority; |
4521 | } else { | |
4522 | /* Couldn't translate queue to a priority. Nothing to do. A warning | |
4523 | * has already been logged. */ | |
4524 | } | |
4525 | } | |
4526 | ||
4527 | static bool | |
46c88433 | 4528 | slave_enabled_cb(ofp_port_t ofp_port, void *xbridge_) |
9583bc14 | 4529 | { |
46c88433 EJ |
4530 | const struct xbridge *xbridge = xbridge_; |
4531 | struct xport *port; | |
9583bc14 EJ |
4532 | |
4533 | switch (ofp_port) { | |
4534 | case OFPP_IN_PORT: | |
4535 | case OFPP_TABLE: | |
4536 | case OFPP_NORMAL: | |
4537 | case OFPP_FLOOD: | |
4538 | case OFPP_ALL: | |
4539 | case OFPP_NONE: | |
4540 | return true; | |
4541 | case OFPP_CONTROLLER: /* Not supported by the bundle action. */ | |
4542 | return false; | |
4543 | default: | |
46c88433 | 4544 | port = get_ofp_port(xbridge, ofp_port); |
9583bc14 EJ |
4545 | return port ? port->may_enable : false; |
4546 | } | |
4547 | } | |
4548 | ||
4549 | static void | |
4550 | xlate_bundle_action(struct xlate_ctx *ctx, | |
4551 | const struct ofpact_bundle *bundle) | |
4552 | { | |
4e022ec0 | 4553 | ofp_port_t port; |
9583bc14 | 4554 | |
49a73e0c | 4555 | port = bundle_execute(bundle, &ctx->xin->flow, ctx->wc, slave_enabled_cb, |
46c88433 | 4556 | CONST_CAST(struct xbridge *, ctx->xbridge)); |
9583bc14 | 4557 | if (bundle->dst.field) { |
49a73e0c | 4558 | nxm_reg_load(&bundle->dst, ofp_to_u16(port), &ctx->xin->flow, ctx->wc); |
2d9b49dd | 4559 | xlate_report_subfield(ctx, &bundle->dst); |
9583bc14 EJ |
4560 | } else { |
4561 | xlate_output_action(ctx, port, 0, false); | |
4562 | } | |
4563 | } | |
4564 | ||
4165b5e0 JS |
4565 | static void |
4566 | xlate_learn_action(struct xlate_ctx *ctx, const struct ofpact_learn *learn) | |
4567 | { | |
49a73e0c | 4568 | learn_mask(learn, ctx->wc); |
9583bc14 | 4569 | |
df70a773 | 4570 | if (ctx->xin->xcache || ctx->xin->allow_side_effects) { |
4165b5e0 JS |
4571 | uint64_t ofpacts_stub[1024 / 8]; |
4572 | struct ofputil_flow_mod fm; | |
2c7ee524 | 4573 | struct ofproto_flow_mod ofm__, *ofm; |
4165b5e0 | 4574 | struct ofpbuf ofpacts; |
2c7ee524 JR |
4575 | enum ofperr error; |
4576 | ||
4577 | if (ctx->xin->xcache) { | |
4578 | struct xc_entry *entry; | |
4579 | ||
4580 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_LEARN); | |
4581 | entry->learn.ofm = xmalloc(sizeof *entry->learn.ofm); | |
4582 | ofm = entry->learn.ofm; | |
4583 | } else { | |
4584 | ofm = &ofm__; | |
4585 | } | |
4165b5e0 JS |
4586 | |
4587 | ofpbuf_use_stub(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); | |
2c7ee524 | 4588 | learn_execute(learn, &ctx->xin->flow, &fm, &ofpacts); |
2d9b49dd BP |
4589 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
4590 | struct ds s = DS_EMPTY_INITIALIZER; | |
4591 | ds_put_format(&s, "table=%"PRIu8" ", fm.table_id); | |
4592 | match_format(&fm.match, &s, OFP_DEFAULT_PRIORITY); | |
4593 | ds_chomp(&s, ' '); | |
4594 | ds_put_format(&s, " priority=%d", fm.priority); | |
4595 | if (fm.new_cookie) { | |
4596 | ds_put_format(&s, " cookie=%#"PRIx64, ntohll(fm.new_cookie)); | |
4597 | } | |
4598 | if (fm.idle_timeout != OFP_FLOW_PERMANENT) { | |
4599 | ds_put_format(&s, " idle=%"PRIu16, fm.idle_timeout); | |
4600 | } | |
4601 | if (fm.hard_timeout != OFP_FLOW_PERMANENT) { | |
4602 | ds_put_format(&s, " hard=%"PRIu16, fm.hard_timeout); | |
4603 | } | |
4604 | if (fm.flags & NX_LEARN_F_SEND_FLOW_REM) { | |
4605 | ds_put_cstr(&s, " send_flow_rem"); | |
4606 | } | |
4607 | ds_put_cstr(&s, " actions="); | |
4608 | ofpacts_format(fm.ofpacts, fm.ofpacts_len, &s); | |
4609 | xlate_report(ctx, OFT_DETAIL, "%s", ds_cstr(&s)); | |
4610 | ds_destroy(&s); | |
4611 | } | |
2c7ee524 JR |
4612 | error = ofproto_dpif_flow_mod_init_for_learn(ctx->xbridge->ofproto, |
4613 | &fm, ofm); | |
4165b5e0 | 4614 | ofpbuf_uninit(&ofpacts); |
2c7ee524 | 4615 | |
df70a773 | 4616 | if (!error && ctx->xin->allow_side_effects) { |
2c7ee524 JR |
4617 | error = ofproto_flow_mod_learn(ofm, ctx->xin->xcache != NULL); |
4618 | } | |
4619 | ||
4620 | if (error) { | |
2d9b49dd BP |
4621 | xlate_report_error(ctx, "LEARN action execution failed (%s).", |
4622 | ofperr_to_string(error)); | |
2c7ee524 | 4623 | } |
2d9b49dd BP |
4624 | } else { |
4625 | xlate_report(ctx, OFT_WARN, | |
4626 | "suppressing side effects, so learn action ignored"); | |
b256dc52 JS |
4627 | } |
4628 | } | |
4629 | ||
4630 | static void | |
4631 | xlate_fin_timeout__(struct rule_dpif *rule, uint16_t tcp_flags, | |
4632 | uint16_t idle_timeout, uint16_t hard_timeout) | |
4633 | { | |
4634 | if (tcp_flags & (TCP_FIN | TCP_RST)) { | |
07a3cd5c | 4635 | ofproto_rule_reduce_timeouts(&rule->up, idle_timeout, hard_timeout); |
b256dc52 | 4636 | } |
9583bc14 EJ |
4637 | } |
4638 | ||
9583bc14 EJ |
4639 | static void |
4640 | xlate_fin_timeout(struct xlate_ctx *ctx, | |
4641 | const struct ofpact_fin_timeout *oft) | |
4642 | { | |
b256dc52 | 4643 | if (ctx->rule) { |
df70a773 JR |
4644 | if (ctx->xin->allow_side_effects) { |
4645 | xlate_fin_timeout__(ctx->rule, ctx->xin->tcp_flags, | |
4646 | oft->fin_idle_timeout, oft->fin_hard_timeout); | |
4647 | } | |
b256dc52 JS |
4648 | if (ctx->xin->xcache) { |
4649 | struct xc_entry *entry; | |
4650 | ||
4651 | entry = xlate_cache_add_entry(ctx->xin->xcache, XC_FIN_TIMEOUT); | |
83709dfa JR |
4652 | /* XC_RULE already holds a reference on the rule, none is taken |
4653 | * here. */ | |
901a517e JR |
4654 | entry->fin.rule = ctx->rule; |
4655 | entry->fin.idle = oft->fin_idle_timeout; | |
4656 | entry->fin.hard = oft->fin_hard_timeout; | |
b256dc52 | 4657 | } |
9583bc14 EJ |
4658 | } |
4659 | } | |
4660 | ||
4661 | static void | |
4662 | xlate_sample_action(struct xlate_ctx *ctx, | |
4663 | const struct ofpact_sample *os) | |
4664 | { | |
f69f713b BY |
4665 | odp_port_t output_odp_port = ODPP_NONE; |
4666 | odp_port_t tunnel_out_port = ODPP_NONE; | |
4667 | struct dpif_ipfix *ipfix = ctx->xbridge->ipfix; | |
4668 | bool emit_set_tunnel = false; | |
4669 | ||
4670 | if (!ipfix || ctx->xin->flow.in_port.ofp_port == OFPP_NONE) { | |
4671 | return; | |
4672 | } | |
4673 | ||
e824d78d JR |
4674 | /* Scale the probability from 16-bit to 32-bit while representing |
4675 | * the same percentage. */ | |
4676 | uint32_t probability = (os->probability << 16) | os->probability; | |
4677 | ||
b440dd8c | 4678 | if (!ctx->xbridge->support.variable_length_userdata) { |
2d9b49dd BP |
4679 | xlate_report_error(ctx, "ignoring NXAST_SAMPLE action because " |
4680 | "datapath lacks support (needs Linux 3.10+ or " | |
4681 | "kernel module from OVS 1.11+)"); | |
e824d78d JR |
4682 | return; |
4683 | } | |
4684 | ||
f69f713b BY |
4685 | /* If ofp_port in flow sample action is equel to ofp_port, |
4686 | * this sample action is a input port action. */ | |
4687 | if (os->sampling_port != OFPP_NONE && | |
4688 | os->sampling_port != ctx->xin->flow.in_port.ofp_port) { | |
4689 | output_odp_port = ofp_port_to_odp_port(ctx->xbridge, | |
4690 | os->sampling_port); | |
4691 | if (output_odp_port == ODPP_NONE) { | |
2d9b49dd BP |
4692 | xlate_report_error(ctx, "can't use unknown port %d in flow sample " |
4693 | "action", os->sampling_port); | |
f69f713b BY |
4694 | return; |
4695 | } | |
4696 | ||
4697 | if (dpif_ipfix_get_flow_exporter_tunnel_sampling(ipfix, | |
4698 | os->collector_set_id) | |
4699 | && dpif_ipfix_get_tunnel_port(ipfix, output_odp_port)) { | |
4700 | tunnel_out_port = output_odp_port; | |
4701 | emit_set_tunnel = true; | |
4702 | } | |
4703 | } | |
4704 | ||
4705 | xlate_commit_actions(ctx); | |
4706 | /* If 'emit_set_tunnel', sample(sampling_port=1) would translate | |
4707 | * into datapath sample action set(tunnel(...)), sample(...) and | |
4708 | * it is used for sampling egress tunnel information. */ | |
4709 | if (emit_set_tunnel) { | |
4710 | const struct xport *xport = get_ofp_port(ctx->xbridge, | |
4711 | os->sampling_port); | |
4712 | ||
4713 | if (xport && xport->is_tunnel) { | |
4714 | struct flow *flow = &ctx->xin->flow; | |
4715 | tnl_port_send(xport->ofport, flow, ctx->wc); | |
4716 | if (!ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { | |
4717 | struct flow_tnl flow_tnl = flow->tunnel; | |
4718 | ||
4719 | commit_odp_tunnel_action(flow, &ctx->base_flow, | |
4720 | ctx->odp_actions); | |
4721 | flow->tunnel = flow_tnl; | |
4722 | } | |
4723 | } else { | |
2d9b49dd BP |
4724 | xlate_report_error(ctx, |
4725 | "sampling_port:%d should be a tunnel port.", | |
4726 | os->sampling_port); | |
f69f713b BY |
4727 | } |
4728 | } | |
e824d78d | 4729 | |
a6092018 BP |
4730 | union user_action_cookie cookie = { |
4731 | .flow_sample = { | |
4732 | .type = USER_ACTION_COOKIE_FLOW_SAMPLE, | |
4733 | .probability = os->probability, | |
4734 | .collector_set_id = os->collector_set_id, | |
4735 | .obs_domain_id = os->obs_domain_id, | |
4736 | .obs_point_id = os->obs_point_id, | |
f69f713b | 4737 | .output_odp_port = output_odp_port, |
4930ea56 | 4738 | .direction = os->direction, |
a6092018 BP |
4739 | } |
4740 | }; | |
4741 | compose_sample_action(ctx, probability, &cookie, sizeof cookie.flow_sample, | |
f69f713b | 4742 | tunnel_out_port, false); |
9583bc14 EJ |
4743 | } |
4744 | ||
456024cb | 4745 | /* Use datapath 'clone' or sample to enclose the translation of 'oc'. */ |
7ae62a67 WT |
4746 | static void |
4747 | compose_clone_action(struct xlate_ctx *ctx, const struct ofpact_nest *oc) | |
bef503e8 AZ |
4748 | { |
4749 | size_t clone_offset = nl_msg_start_nested(ctx->odp_actions, | |
4750 | OVS_ACTION_ATTR_CLONE); | |
456024cb AZ |
4751 | do_xlate_actions(oc->actions, ofpact_nest_get_action_len(oc), ctx); |
4752 | nl_msg_end_non_empty_nested(ctx->odp_actions, clone_offset); | |
4753 | } | |
4754 | ||
4755 | /* Use datapath 'sample' action to translate clone. */ | |
4756 | static void | |
4757 | compose_clone_action_using_sample(struct xlate_ctx *ctx, | |
4758 | const struct ofpact_nest *oc) | |
4759 | { | |
4760 | size_t offset = nl_msg_start_nested(ctx->odp_actions, | |
4761 | OVS_ACTION_ATTR_SAMPLE); | |
4762 | ||
4763 | size_t ac_offset = nl_msg_start_nested(ctx->odp_actions, | |
4764 | OVS_SAMPLE_ATTR_ACTIONS); | |
bef503e8 AZ |
4765 | |
4766 | do_xlate_actions(oc->actions, ofpact_nest_get_action_len(oc), ctx); | |
4767 | ||
456024cb AZ |
4768 | if (nl_msg_end_non_empty_nested(ctx->odp_actions, ac_offset)) { |
4769 | nl_msg_cancel_nested(ctx->odp_actions, offset); | |
4770 | } else { | |
4771 | nl_msg_put_u32(ctx->odp_actions, OVS_SAMPLE_ATTR_PROBABILITY, | |
4772 | UINT32_MAX); /* 100% probability. */ | |
4773 | nl_msg_end_nested(ctx->odp_actions, offset); | |
4774 | } | |
bef503e8 AZ |
4775 | } |
4776 | ||
4777 | static void | |
4778 | xlate_clone(struct xlate_ctx *ctx, const struct ofpact_nest *oc) | |
7ae62a67 | 4779 | { |
bd3c2df3 | 4780 | bool old_was_mpls = ctx->was_mpls; |
ba653d2a | 4781 | bool old_conntracked = ctx->conntracked; |
7ae62a67 | 4782 | struct flow old_flow = ctx->xin->flow; |
ba653d2a | 4783 | |
b827b231 BP |
4784 | struct ofpbuf old_stack = ctx->stack; |
4785 | union mf_subvalue new_stack[1024 / sizeof(union mf_subvalue)]; | |
4786 | ofpbuf_use_stub(&ctx->stack, new_stack, sizeof new_stack); | |
4787 | ofpbuf_put(&ctx->stack, old_stack.data, old_stack.size); | |
4788 | ||
4789 | struct ofpbuf old_action_set = ctx->action_set; | |
4790 | uint64_t actset_stub[1024 / 8]; | |
4791 | ofpbuf_use_stub(&ctx->action_set, actset_stub, sizeof actset_stub); | |
4792 | ofpbuf_put(&ctx->action_set, old_action_set.data, old_action_set.size); | |
4793 | ||
456024cb AZ |
4794 | /* Datapath clone action will make sure the pre clone packets |
4795 | * are used for actions after clone. Save and restore | |
4796 | * ctx->base_flow to reflect this for the openflow pipeline. */ | |
4797 | struct flow old_base_flow = ctx->base_flow; | |
bef503e8 | 4798 | if (ctx->xbridge->support.clone) { |
bef503e8 | 4799 | compose_clone_action(ctx, oc); |
bef503e8 | 4800 | } else { |
456024cb | 4801 | compose_clone_action_using_sample(ctx, oc); |
bef503e8 | 4802 | } |
456024cb | 4803 | ctx->base_flow = old_base_flow; |
ba653d2a | 4804 | |
b827b231 BP |
4805 | ofpbuf_uninit(&ctx->action_set); |
4806 | ctx->action_set = old_action_set; | |
4807 | ||
4808 | ofpbuf_uninit(&ctx->stack); | |
4809 | ctx->stack = old_stack; | |
4810 | ||
7ae62a67 | 4811 | ctx->xin->flow = old_flow; |
ba653d2a BP |
4812 | |
4813 | /* The clone's conntrack execution should have no effect on the original | |
4814 | * packet. */ | |
4815 | ctx->conntracked = old_conntracked; | |
bd3c2df3 BP |
4816 | |
4817 | /* Popping MPLS from the clone should have no effect on the original | |
4818 | * packet. */ | |
4819 | ctx->was_mpls = old_was_mpls; | |
7ae62a67 WT |
4820 | } |
4821 | ||
076caa2f JR |
4822 | static void |
4823 | xlate_meter_action(struct xlate_ctx *ctx, const struct ofpact_meter *meter) | |
4824 | { | |
4825 | if (meter->provider_meter_id != UINT32_MAX) { | |
4826 | nl_msg_put_u32(ctx->odp_actions, OVS_ACTION_ATTR_METER, | |
4827 | meter->provider_meter_id); | |
4828 | } | |
4829 | } | |
4830 | ||
9583bc14 | 4831 | static bool |
46c88433 | 4832 | may_receive(const struct xport *xport, struct xlate_ctx *ctx) |
9583bc14 | 4833 | { |
bbbca389 | 4834 | if (xport->config & (is_stp(&ctx->xin->flow) |
46c88433 EJ |
4835 | ? OFPUTIL_PC_NO_RECV_STP |
4836 | : OFPUTIL_PC_NO_RECV)) { | |
9583bc14 EJ |
4837 | return false; |
4838 | } | |
4839 | ||
4840 | /* Only drop packets here if both forwarding and learning are | |
4841 | * disabled. If just learning is enabled, we need to have | |
4842 | * OFPP_NORMAL and the learning action have a look at the packet | |
4843 | * before we can drop it. */ | |
9efd308e DV |
4844 | if ((!xport_stp_forward_state(xport) && !xport_stp_learn_state(xport)) || |
4845 | (!xport_rstp_forward_state(xport) && !xport_rstp_learn_state(xport))) { | |
9583bc14 EJ |
4846 | return false; |
4847 | } | |
4848 | ||
4849 | return true; | |
4850 | } | |
4851 | ||
7fdb60a7 | 4852 | static void |
7e7e8dbb BP |
4853 | xlate_write_actions__(struct xlate_ctx *ctx, |
4854 | const struct ofpact *ofpacts, size_t ofpacts_len) | |
7fdb60a7 | 4855 | { |
c61f3870 BP |
4856 | /* Maintain actset_output depending on the contents of the action set: |
4857 | * | |
4858 | * - OFPP_UNSET, if there is no "output" action. | |
4859 | * | |
4860 | * - The output port, if there is an "output" action and no "group" | |
4861 | * action. | |
4862 | * | |
4863 | * - OFPP_UNSET, if there is a "group" action. | |
4864 | */ | |
4865 | if (!ctx->action_set_has_group) { | |
7e7e8dbb BP |
4866 | const struct ofpact *a; |
4867 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { | |
4868 | if (a->type == OFPACT_OUTPUT) { | |
4869 | ctx->xin->flow.actset_output = ofpact_get_OUTPUT(a)->port; | |
4870 | } else if (a->type == OFPACT_GROUP) { | |
c61f3870 BP |
4871 | ctx->xin->flow.actset_output = OFPP_UNSET; |
4872 | ctx->action_set_has_group = true; | |
9055ca9a | 4873 | break; |
c61f3870 BP |
4874 | } |
4875 | } | |
4876 | } | |
4877 | ||
7e7e8dbb BP |
4878 | ofpbuf_put(&ctx->action_set, ofpacts, ofpacts_len); |
4879 | } | |
4880 | ||
4881 | static void | |
4882 | xlate_write_actions(struct xlate_ctx *ctx, const struct ofpact_nest *a) | |
4883 | { | |
4884 | xlate_write_actions__(ctx, a->actions, ofpact_nest_get_action_len(a)); | |
7fdb60a7 SH |
4885 | } |
4886 | ||
4887 | static void | |
4888 | xlate_action_set(struct xlate_ctx *ctx) | |
4889 | { | |
2d9b49dd BP |
4890 | uint64_t action_list_stub[1024 / 8]; |
4891 | struct ofpbuf action_list = OFPBUF_STUB_INITIALIZER(action_list_stub); | |
7fdb60a7 | 4892 | ofpacts_execute_action_set(&action_list, &ctx->action_set); |
ed9c9e3e JR |
4893 | /* Clear the action set, as it is not needed any more. */ |
4894 | ofpbuf_clear(&ctx->action_set); | |
2d9b49dd BP |
4895 | if (action_list.size) { |
4896 | ctx->in_action_set = true; | |
4897 | ||
4898 | struct ovs_list *old_trace = ctx->xin->trace; | |
4899 | ctx->xin->trace = xlate_report(ctx, OFT_TABLE, | |
4900 | "--. Executing action set:"); | |
4901 | do_xlate_actions(action_list.data, action_list.size, ctx); | |
4902 | ctx->xin->trace = old_trace; | |
4903 | ||
4904 | ctx->in_action_set = false; | |
4905 | } | |
7fdb60a7 SH |
4906 | ofpbuf_uninit(&action_list); |
4907 | } | |
4908 | ||
e672ff9b | 4909 | static void |
1d361a81 | 4910 | freeze_put_unroll_xlate(struct xlate_ctx *ctx) |
e672ff9b | 4911 | { |
1d361a81 | 4912 | struct ofpact_unroll_xlate *unroll = ctx->frozen_actions.header; |
e672ff9b JR |
4913 | |
4914 | /* Restore the table_id and rule cookie for a potential PACKET | |
4915 | * IN if needed. */ | |
4916 | if (!unroll || | |
4917 | (ctx->table_id != unroll->rule_table_id | |
4918 | || ctx->rule_cookie != unroll->rule_cookie)) { | |
1d361a81 | 4919 | unroll = ofpact_put_UNROLL_XLATE(&ctx->frozen_actions); |
e672ff9b JR |
4920 | unroll->rule_table_id = ctx->table_id; |
4921 | unroll->rule_cookie = ctx->rule_cookie; | |
1d361a81 | 4922 | ctx->frozen_actions.header = unroll; |
e672ff9b JR |
4923 | } |
4924 | } | |
4925 | ||
4926 | ||
1d361a81 BP |
4927 | /* Copy actions 'a' through 'end' to ctx->frozen_actions, which will be |
4928 | * executed after thawing. Inserts an UNROLL_XLATE action, if none is already | |
4929 | * present, before any action that may depend on the current table ID or flow | |
4930 | * cookie. */ | |
e672ff9b | 4931 | static void |
1d361a81 | 4932 | freeze_unroll_actions(const struct ofpact *a, const struct ofpact *end, |
e672ff9b JR |
4933 | struct xlate_ctx *ctx) |
4934 | { | |
c2b283b7 | 4935 | for (; a < end; a = ofpact_next(a)) { |
e672ff9b | 4936 | switch (a->type) { |
e672ff9b | 4937 | case OFPACT_OUTPUT_REG: |
aaca4fe0 | 4938 | case OFPACT_OUTPUT_TRUNC: |
e672ff9b JR |
4939 | case OFPACT_GROUP: |
4940 | case OFPACT_OUTPUT: | |
4941 | case OFPACT_CONTROLLER: | |
4942 | case OFPACT_DEC_MPLS_TTL: | |
4943 | case OFPACT_DEC_TTL: | |
83a31283 BP |
4944 | /* These actions may generate asynchronous messages, which include |
4945 | * table ID and flow cookie information. */ | |
1d361a81 | 4946 | freeze_put_unroll_xlate(ctx); |
e672ff9b JR |
4947 | break; |
4948 | ||
83a31283 BP |
4949 | case OFPACT_RESUBMIT: |
4950 | if (ofpact_get_RESUBMIT(a)->table_id == 0xff) { | |
4951 | /* This resubmit action is relative to the current table, so we | |
4952 | * need to track what table that is.*/ | |
1d361a81 | 4953 | freeze_put_unroll_xlate(ctx); |
83a31283 BP |
4954 | } |
4955 | break; | |
4956 | ||
e672ff9b JR |
4957 | case OFPACT_SET_TUNNEL: |
4958 | case OFPACT_REG_MOVE: | |
4959 | case OFPACT_SET_FIELD: | |
4960 | case OFPACT_STACK_PUSH: | |
4961 | case OFPACT_STACK_POP: | |
4962 | case OFPACT_LEARN: | |
4963 | case OFPACT_WRITE_METADATA: | |
83a31283 | 4964 | case OFPACT_GOTO_TABLE: |
e672ff9b JR |
4965 | case OFPACT_ENQUEUE: |
4966 | case OFPACT_SET_VLAN_VID: | |
4967 | case OFPACT_SET_VLAN_PCP: | |
4968 | case OFPACT_STRIP_VLAN: | |
4969 | case OFPACT_PUSH_VLAN: | |
4970 | case OFPACT_SET_ETH_SRC: | |
4971 | case OFPACT_SET_ETH_DST: | |
4972 | case OFPACT_SET_IPV4_SRC: | |
4973 | case OFPACT_SET_IPV4_DST: | |
4974 | case OFPACT_SET_IP_DSCP: | |
4975 | case OFPACT_SET_IP_ECN: | |
4976 | case OFPACT_SET_IP_TTL: | |
4977 | case OFPACT_SET_L4_SRC_PORT: | |
4978 | case OFPACT_SET_L4_DST_PORT: | |
4979 | case OFPACT_SET_QUEUE: | |
4980 | case OFPACT_POP_QUEUE: | |
4981 | case OFPACT_PUSH_MPLS: | |
4982 | case OFPACT_POP_MPLS: | |
4983 | case OFPACT_SET_MPLS_LABEL: | |
4984 | case OFPACT_SET_MPLS_TC: | |
4985 | case OFPACT_SET_MPLS_TTL: | |
4986 | case OFPACT_MULTIPATH: | |
4987 | case OFPACT_BUNDLE: | |
4988 | case OFPACT_EXIT: | |
4989 | case OFPACT_UNROLL_XLATE: | |
4990 | case OFPACT_FIN_TIMEOUT: | |
4991 | case OFPACT_CLEAR_ACTIONS: | |
4992 | case OFPACT_WRITE_ACTIONS: | |
4993 | case OFPACT_METER: | |
4994 | case OFPACT_SAMPLE: | |
7ae62a67 | 4995 | case OFPACT_CLONE: |
d4abaff5 | 4996 | case OFPACT_DEBUG_RECIRC: |
07659514 | 4997 | case OFPACT_CT: |
72fe7578 | 4998 | case OFPACT_CT_CLEAR: |
9ac0aada | 4999 | case OFPACT_NAT: |
83a31283 | 5000 | /* These may not generate PACKET INs. */ |
e672ff9b JR |
5001 | break; |
5002 | ||
e672ff9b JR |
5003 | case OFPACT_NOTE: |
5004 | case OFPACT_CONJUNCTION: | |
83a31283 | 5005 | /* These need not be copied for restoration. */ |
e672ff9b JR |
5006 | continue; |
5007 | } | |
5008 | /* Copy the action over. */ | |
1d361a81 | 5009 | ofpbuf_put(&ctx->frozen_actions, a, OFPACT_ALIGN(a->len)); |
e672ff9b JR |
5010 | } |
5011 | } | |
5012 | ||
8e53fe8c | 5013 | static void |
f2d105b5 JS |
5014 | put_ct_mark(const struct flow *flow, struct ofpbuf *odp_actions, |
5015 | struct flow_wildcards *wc) | |
8e53fe8c | 5016 | { |
2a754f4a JS |
5017 | if (wc->masks.ct_mark) { |
5018 | struct { | |
5019 | uint32_t key; | |
5020 | uint32_t mask; | |
5021 | } *odp_ct_mark; | |
5022 | ||
5023 | odp_ct_mark = nl_msg_put_unspec_uninit(odp_actions, OVS_CT_ATTR_MARK, | |
5024 | sizeof(*odp_ct_mark)); | |
5025 | odp_ct_mark->key = flow->ct_mark & wc->masks.ct_mark; | |
5026 | odp_ct_mark->mask = wc->masks.ct_mark; | |
8e53fe8c JS |
5027 | } |
5028 | } | |
5029 | ||
9daf2348 | 5030 | static void |
f2d105b5 JS |
5031 | put_ct_label(const struct flow *flow, struct ofpbuf *odp_actions, |
5032 | struct flow_wildcards *wc) | |
9daf2348 | 5033 | { |
2ff8484b | 5034 | if (!ovs_u128_is_zero(wc->masks.ct_label)) { |
9daf2348 JS |
5035 | struct { |
5036 | ovs_u128 key; | |
5037 | ovs_u128 mask; | |
5038 | } *odp_ct_label; | |
5039 | ||
5040 | odp_ct_label = nl_msg_put_unspec_uninit(odp_actions, | |
5041 | OVS_CT_ATTR_LABELS, | |
5042 | sizeof(*odp_ct_label)); | |
f2d105b5 | 5043 | odp_ct_label->key = ovs_u128_and(flow->ct_label, wc->masks.ct_label); |
9daf2348 JS |
5044 | odp_ct_label->mask = wc->masks.ct_label; |
5045 | } | |
5046 | } | |
5047 | ||
d787ad39 | 5048 | static void |
2d9b49dd BP |
5049 | put_ct_helper(struct xlate_ctx *ctx, |
5050 | struct ofpbuf *odp_actions, struct ofpact_conntrack *ofc) | |
d787ad39 JS |
5051 | { |
5052 | if (ofc->alg) { | |
40c7b2fc JS |
5053 | switch(ofc->alg) { |
5054 | case IPPORT_FTP: | |
d787ad39 | 5055 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "ftp"); |
40c7b2fc JS |
5056 | break; |
5057 | case IPPORT_TFTP: | |
5058 | nl_msg_put_string(odp_actions, OVS_CT_ATTR_HELPER, "tftp"); | |
5059 | break; | |
5060 | default: | |
2d9b49dd | 5061 | xlate_report_error(ctx, "cannot serialize ct_helper %d", ofc->alg); |
40c7b2fc | 5062 | break; |
d787ad39 JS |
5063 | } |
5064 | } | |
5065 | } | |
5066 | ||
9ac0aada JR |
5067 | static void |
5068 | put_ct_nat(struct xlate_ctx *ctx) | |
5069 | { | |
5070 | struct ofpact_nat *ofn = ctx->ct_nat_action; | |
5071 | size_t nat_offset; | |
5072 | ||
5073 | if (!ofn) { | |
5074 | return; | |
5075 | } | |
5076 | ||
5077 | nat_offset = nl_msg_start_nested(ctx->odp_actions, OVS_CT_ATTR_NAT); | |
5078 | if (ofn->flags & NX_NAT_F_SRC || ofn->flags & NX_NAT_F_DST) { | |
5079 | nl_msg_put_flag(ctx->odp_actions, ofn->flags & NX_NAT_F_SRC | |
5080 | ? OVS_NAT_ATTR_SRC : OVS_NAT_ATTR_DST); | |
5081 | if (ofn->flags & NX_NAT_F_PERSISTENT) { | |
5082 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PERSISTENT); | |
5083 | } | |
5084 | if (ofn->flags & NX_NAT_F_PROTO_HASH) { | |
5085 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_HASH); | |
5086 | } else if (ofn->flags & NX_NAT_F_PROTO_RANDOM) { | |
5087 | nl_msg_put_flag(ctx->odp_actions, OVS_NAT_ATTR_PROTO_RANDOM); | |
5088 | } | |
5089 | if (ofn->range_af == AF_INET) { | |
73e8bc23 | 5090 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, |
9ac0aada JR |
5091 | ofn->range.addr.ipv4.min); |
5092 | if (ofn->range.addr.ipv4.max && | |
73e8bc23 BP |
5093 | (ntohl(ofn->range.addr.ipv4.max) |
5094 | > ntohl(ofn->range.addr.ipv4.min))) { | |
5095 | nl_msg_put_be32(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
5096 | ofn->range.addr.ipv4.max); | |
9ac0aada JR |
5097 | } |
5098 | } else if (ofn->range_af == AF_INET6) { | |
5099 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MIN, | |
5100 | &ofn->range.addr.ipv6.min, | |
5101 | sizeof ofn->range.addr.ipv6.min); | |
5102 | if (!ipv6_mask_is_any(&ofn->range.addr.ipv6.max) && | |
5103 | memcmp(&ofn->range.addr.ipv6.max, &ofn->range.addr.ipv6.min, | |
5104 | sizeof ofn->range.addr.ipv6.max) > 0) { | |
5105 | nl_msg_put_unspec(ctx->odp_actions, OVS_NAT_ATTR_IP_MAX, | |
5106 | &ofn->range.addr.ipv6.max, | |
5107 | sizeof ofn->range.addr.ipv6.max); | |
5108 | } | |
5109 | } | |
5110 | if (ofn->range_af != AF_UNSPEC && ofn->range.proto.min) { | |
5111 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MIN, | |
5112 | ofn->range.proto.min); | |
5113 | if (ofn->range.proto.max && | |
5114 | ofn->range.proto.max > ofn->range.proto.min) { | |
5115 | nl_msg_put_u16(ctx->odp_actions, OVS_NAT_ATTR_PROTO_MAX, | |
5116 | ofn->range.proto.max); | |
5117 | } | |
5118 | } | |
5119 | } | |
5120 | nl_msg_end_nested(ctx->odp_actions, nat_offset); | |
5121 | } | |
5122 | ||
07659514 JS |
5123 | static void |
5124 | compose_conntrack_action(struct xlate_ctx *ctx, struct ofpact_conntrack *ofc) | |
5125 | { | |
9daf2348 | 5126 | ovs_u128 old_ct_label = ctx->base_flow.ct_label; |
f2d105b5 | 5127 | ovs_u128 old_ct_label_mask = ctx->wc->masks.ct_label; |
8e53fe8c | 5128 | uint32_t old_ct_mark = ctx->base_flow.ct_mark; |
f2d105b5 | 5129 | uint32_t old_ct_mark_mask = ctx->wc->masks.ct_mark; |
07659514 JS |
5130 | size_t ct_offset; |
5131 | uint16_t zone; | |
5132 | ||
5133 | /* Ensure that any prior actions are applied before composing the new | |
5134 | * conntrack action. */ | |
5135 | xlate_commit_actions(ctx); | |
5136 | ||
8e53fe8c | 5137 | /* Process nested actions first, to populate the key. */ |
9ac0aada | 5138 | ctx->ct_nat_action = NULL; |
f2d105b5 JS |
5139 | ctx->wc->masks.ct_mark = 0; |
5140 | ctx->wc->masks.ct_label.u64.hi = ctx->wc->masks.ct_label.u64.lo = 0; | |
8e53fe8c JS |
5141 | do_xlate_actions(ofc->actions, ofpact_ct_get_action_len(ofc), ctx); |
5142 | ||
07659514 JS |
5143 | if (ofc->zone_src.field) { |
5144 | zone = mf_get_subfield(&ofc->zone_src, &ctx->xin->flow); | |
5145 | } else { | |
5146 | zone = ofc->zone_imm; | |
5147 | } | |
5148 | ||
5149 | ct_offset = nl_msg_start_nested(ctx->odp_actions, OVS_ACTION_ATTR_CT); | |
5150 | if (ofc->flags & NX_CT_F_COMMIT) { | |
5151 | nl_msg_put_flag(ctx->odp_actions, OVS_CT_ATTR_COMMIT); | |
5152 | } | |
5153 | nl_msg_put_u16(ctx->odp_actions, OVS_CT_ATTR_ZONE, zone); | |
f2d105b5 JS |
5154 | put_ct_mark(&ctx->xin->flow, ctx->odp_actions, ctx->wc); |
5155 | put_ct_label(&ctx->xin->flow, ctx->odp_actions, ctx->wc); | |
2d9b49dd | 5156 | put_ct_helper(ctx, ctx->odp_actions, ofc); |
9ac0aada JR |
5157 | put_ct_nat(ctx); |
5158 | ctx->ct_nat_action = NULL; | |
07659514 JS |
5159 | nl_msg_end_nested(ctx->odp_actions, ct_offset); |
5160 | ||
8e53fe8c JS |
5161 | /* Restore the original ct fields in the key. These should only be exposed |
5162 | * after recirculation to another table. */ | |
5163 | ctx->base_flow.ct_mark = old_ct_mark; | |
f2d105b5 | 5164 | ctx->wc->masks.ct_mark = old_ct_mark_mask; |
9daf2348 | 5165 | ctx->base_flow.ct_label = old_ct_label; |
f2d105b5 | 5166 | ctx->wc->masks.ct_label = old_ct_label_mask; |
8e53fe8c | 5167 | |
07659514 JS |
5168 | if (ofc->recirc_table == NX_CT_RECIRC_NONE) { |
5169 | /* If we do not recirculate as part of this action, hide the results of | |
5170 | * connection tracking from subsequent recirculations. */ | |
5171 | ctx->conntracked = false; | |
5172 | } else { | |
5173 | /* Use ct_* fields from datapath during recirculation upcall. */ | |
5174 | ctx->conntracked = true; | |
e37b8437 | 5175 | compose_recirculate_and_fork(ctx, ofc->recirc_table); |
07659514 JS |
5176 | } |
5177 | } | |
5178 | ||
e12ec36b SH |
5179 | static void |
5180 | recirc_for_mpls(const struct ofpact *a, struct xlate_ctx *ctx) | |
5181 | { | |
5182 | /* No need to recirculate if already exiting. */ | |
5183 | if (ctx->exit) { | |
5184 | return; | |
5185 | } | |
5186 | ||
5187 | /* Do not consider recirculating unless the packet was previously MPLS. */ | |
5188 | if (!ctx->was_mpls) { | |
5189 | return; | |
5190 | } | |
5191 | ||
5192 | /* Special case these actions, only recirculating if necessary. | |
5193 | * This avoids the overhead of recirculation in common use-cases. | |
5194 | */ | |
5195 | switch (a->type) { | |
5196 | ||
5197 | /* Output actions do not require recirculation. */ | |
5198 | case OFPACT_OUTPUT: | |
aaca4fe0 | 5199 | case OFPACT_OUTPUT_TRUNC: |
e12ec36b SH |
5200 | case OFPACT_ENQUEUE: |
5201 | case OFPACT_OUTPUT_REG: | |
5202 | /* Set actions that don't touch L3+ fields do not require recirculation. */ | |
5203 | case OFPACT_SET_VLAN_VID: | |
5204 | case OFPACT_SET_VLAN_PCP: | |
5205 | case OFPACT_SET_ETH_SRC: | |
5206 | case OFPACT_SET_ETH_DST: | |
5207 | case OFPACT_SET_TUNNEL: | |
5208 | case OFPACT_SET_QUEUE: | |
5209 | /* If actions of a group require recirculation that can be detected | |
5210 | * when translating them. */ | |
5211 | case OFPACT_GROUP: | |
5212 | return; | |
5213 | ||
5214 | /* Set field that don't touch L3+ fields don't require recirculation. */ | |
5215 | case OFPACT_SET_FIELD: | |
5216 | if (mf_is_l3_or_higher(ofpact_get_SET_FIELD(a)->field)) { | |
5217 | break; | |
5218 | } | |
5219 | return; | |
5220 | ||
5221 | /* For simplicity, recirculate in all other cases. */ | |
5222 | case OFPACT_CONTROLLER: | |
5223 | case OFPACT_BUNDLE: | |
5224 | case OFPACT_STRIP_VLAN: | |
5225 | case OFPACT_PUSH_VLAN: | |
5226 | case OFPACT_SET_IPV4_SRC: | |
5227 | case OFPACT_SET_IPV4_DST: | |
5228 | case OFPACT_SET_IP_DSCP: | |
5229 | case OFPACT_SET_IP_ECN: | |
5230 | case OFPACT_SET_IP_TTL: | |
5231 | case OFPACT_SET_L4_SRC_PORT: | |
5232 | case OFPACT_SET_L4_DST_PORT: | |
5233 | case OFPACT_REG_MOVE: | |
5234 | case OFPACT_STACK_PUSH: | |
5235 | case OFPACT_STACK_POP: | |
5236 | case OFPACT_DEC_TTL: | |
5237 | case OFPACT_SET_MPLS_LABEL: | |
5238 | case OFPACT_SET_MPLS_TC: | |
5239 | case OFPACT_SET_MPLS_TTL: | |
5240 | case OFPACT_DEC_MPLS_TTL: | |
5241 | case OFPACT_PUSH_MPLS: | |
5242 | case OFPACT_POP_MPLS: | |
5243 | case OFPACT_POP_QUEUE: | |
5244 | case OFPACT_FIN_TIMEOUT: | |
5245 | case OFPACT_RESUBMIT: | |
5246 | case OFPACT_LEARN: | |
5247 | case OFPACT_CONJUNCTION: | |
5248 | case OFPACT_MULTIPATH: | |
5249 | case OFPACT_NOTE: | |
5250 | case OFPACT_EXIT: | |
5251 | case OFPACT_SAMPLE: | |
7ae62a67 | 5252 | case OFPACT_CLONE: |
e12ec36b SH |
5253 | case OFPACT_UNROLL_XLATE: |
5254 | case OFPACT_CT: | |
72fe7578 | 5255 | case OFPACT_CT_CLEAR: |
e12ec36b SH |
5256 | case OFPACT_NAT: |
5257 | case OFPACT_DEBUG_RECIRC: | |
5258 | case OFPACT_METER: | |
5259 | case OFPACT_CLEAR_ACTIONS: | |
5260 | case OFPACT_WRITE_ACTIONS: | |
5261 | case OFPACT_WRITE_METADATA: | |
5262 | case OFPACT_GOTO_TABLE: | |
5263 | default: | |
5264 | break; | |
5265 | } | |
5266 | ||
5267 | /* Recirculate */ | |
5268 | ctx_trigger_freeze(ctx); | |
5269 | } | |
5270 | ||
2d9b49dd BP |
5271 | static void |
5272 | xlate_ofpact_reg_move(struct xlate_ctx *ctx, const struct ofpact_reg_move *a) | |
5273 | { | |
5274 | mf_subfield_copy(&a->src, &a->dst, &ctx->xin->flow, ctx->wc); | |
5275 | xlate_report_subfield(ctx, &a->dst); | |
5276 | } | |
5277 | ||
5278 | static void | |
5279 | xlate_ofpact_stack_pop(struct xlate_ctx *ctx, const struct ofpact_stack *a) | |
5280 | { | |
5281 | if (nxm_execute_stack_pop(a, &ctx->xin->flow, ctx->wc, &ctx->stack)) { | |
5282 | xlate_report_subfield(ctx, &a->subfield); | |
5283 | } else { | |
5284 | xlate_report_error(ctx, "stack underflow"); | |
5285 | } | |
5286 | } | |
5287 | ||
5288 | /* Restore translation context data that was stored earlier. */ | |
5289 | static void | |
5290 | xlate_ofpact_unroll_xlate(struct xlate_ctx *ctx, | |
5291 | const struct ofpact_unroll_xlate *a) | |
5292 | { | |
5293 | ctx->table_id = a->rule_table_id; | |
5294 | ctx->rule_cookie = a->rule_cookie; | |
5295 | xlate_report(ctx, OFT_THAW, "restored state: table=%"PRIu8", " | |
5296 | "cookie=%#"PRIx64, a->rule_table_id, a->rule_cookie); | |
5297 | } | |
5298 | ||
9583bc14 EJ |
5299 | static void |
5300 | do_xlate_actions(const struct ofpact *ofpacts, size_t ofpacts_len, | |
5301 | struct xlate_ctx *ctx) | |
5302 | { | |
49a73e0c | 5303 | struct flow_wildcards *wc = ctx->wc; |
33bf9176 | 5304 | struct flow *flow = &ctx->xin->flow; |
9583bc14 EJ |
5305 | const struct ofpact *a; |
5306 | ||
a36de779 | 5307 | if (ovs_native_tunneling_is_on(ctx->xbridge->ofproto)) { |
53902038 | 5308 | tnl_neigh_snoop(flow, wc, ctx->xbridge->name); |
a36de779 | 5309 | } |
f47ea021 JR |
5310 | /* dl_type already in the mask, not set below. */ |
5311 | ||
2d9b49dd BP |
5312 | if (!ofpacts_len) { |
5313 | xlate_report(ctx, OFT_ACTION, "drop"); | |
5314 | return; | |
5315 | } | |
5316 | ||
9583bc14 EJ |
5317 | OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) { |
5318 | struct ofpact_controller *controller; | |
5319 | const struct ofpact_metadata *metadata; | |
b2dd70be JR |
5320 | const struct ofpact_set_field *set_field; |
5321 | const struct mf_field *mf; | |
9583bc14 | 5322 | |
fff1b9c0 JR |
5323 | if (ctx->error) { |
5324 | break; | |
5325 | } | |
5326 | ||
e12ec36b SH |
5327 | recirc_for_mpls(a, ctx); |
5328 | ||
e672ff9b JR |
5329 | if (ctx->exit) { |
5330 | /* Check if need to store the remaining actions for later | |
5331 | * execution. */ | |
1d361a81 BP |
5332 | if (ctx->freezing) { |
5333 | freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), | |
e672ff9b JR |
5334 | ctx); |
5335 | } | |
5336 | break; | |
7bbdd84f SH |
5337 | } |
5338 | ||
2d9b49dd BP |
5339 | if (OVS_UNLIKELY(ctx->xin->trace)) { |
5340 | struct ds s = DS_EMPTY_INITIALIZER; | |
5341 | ofpacts_format(a, OFPACT_ALIGN(a->len), &s); | |
5342 | xlate_report(ctx, OFT_ACTION, "%s", ds_cstr(&s)); | |
5343 | ds_destroy(&s); | |
5344 | } | |
5345 | ||
9583bc14 EJ |
5346 | switch (a->type) { |
5347 | case OFPACT_OUTPUT: | |
5348 | xlate_output_action(ctx, ofpact_get_OUTPUT(a)->port, | |
5349 | ofpact_get_OUTPUT(a)->max_len, true); | |
5350 | break; | |
5351 | ||
7395c052 | 5352 | case OFPACT_GROUP: |
f4fb341b | 5353 | if (xlate_group_action(ctx, ofpact_get_GROUP(a)->group_id)) { |
1d741d6d | 5354 | /* Group could not be found. */ |
db88b35c JR |
5355 | |
5356 | /* XXX: Terminates action list translation, but does not | |
5357 | * terminate the pipeline. */ | |
f4fb341b SH |
5358 | return; |
5359 | } | |
7395c052 NZ |
5360 | break; |
5361 | ||
9583bc14 EJ |
5362 | case OFPACT_CONTROLLER: |
5363 | controller = ofpact_get_CONTROLLER(a); | |
77ab5fd2 BP |
5364 | if (controller->pause) { |
5365 | ctx->pause = controller; | |
5366 | ctx->xout->slow |= SLOW_CONTROLLER; | |
5367 | ctx_trigger_freeze(ctx); | |
5368 | a = ofpact_next(a); | |
5369 | } else { | |
5370 | execute_controller_action(ctx, controller->max_len, | |
5371 | controller->reason, | |
5372 | controller->controller_id, | |
5373 | controller->userdata, | |
5374 | controller->userdata_len); | |
5375 | } | |
9583bc14 EJ |
5376 | break; |
5377 | ||
5378 | case OFPACT_ENQUEUE: | |
16194afd DDP |
5379 | memset(&wc->masks.skb_priority, 0xff, |
5380 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
5381 | xlate_enqueue_action(ctx, ofpact_get_ENQUEUE(a)); |
5382 | break; | |
5383 | ||
5384 | case OFPACT_SET_VLAN_VID: | |
f74e7df7 | 5385 | wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI); |
ca287d20 JR |
5386 | if (flow->vlan_tci & htons(VLAN_CFI) || |
5387 | ofpact_get_SET_VLAN_VID(a)->push_vlan_if_needed) { | |
5388 | flow->vlan_tci &= ~htons(VLAN_VID_MASK); | |
5389 | flow->vlan_tci |= (htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid) | |
5390 | | htons(VLAN_CFI)); | |
5391 | } | |
9583bc14 EJ |
5392 | break; |
5393 | ||
5394 | case OFPACT_SET_VLAN_PCP: | |
f74e7df7 | 5395 | wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI); |
ca287d20 JR |
5396 | if (flow->vlan_tci & htons(VLAN_CFI) || |
5397 | ofpact_get_SET_VLAN_PCP(a)->push_vlan_if_needed) { | |
5398 | flow->vlan_tci &= ~htons(VLAN_PCP_MASK); | |
5399 | flow->vlan_tci |= htons((ofpact_get_SET_VLAN_PCP(a)->vlan_pcp | |
5400 | << VLAN_PCP_SHIFT) | VLAN_CFI); | |
5401 | } | |
9583bc14 EJ |
5402 | break; |
5403 | ||
5404 | case OFPACT_STRIP_VLAN: | |
f74e7df7 | 5405 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 5406 | flow->vlan_tci = htons(0); |
9583bc14 EJ |
5407 | break; |
5408 | ||
5409 | case OFPACT_PUSH_VLAN: | |
5410 | /* XXX 802.1AD(QinQ) */ | |
f74e7df7 | 5411 | memset(&wc->masks.vlan_tci, 0xff, sizeof wc->masks.vlan_tci); |
33bf9176 | 5412 | flow->vlan_tci = htons(VLAN_CFI); |
9583bc14 EJ |
5413 | break; |
5414 | ||
5415 | case OFPACT_SET_ETH_SRC: | |
74ff3298 JR |
5416 | WC_MASK_FIELD(wc, dl_src); |
5417 | flow->dl_src = ofpact_get_SET_ETH_SRC(a)->mac; | |
9583bc14 EJ |
5418 | break; |
5419 | ||
5420 | case OFPACT_SET_ETH_DST: | |
74ff3298 JR |
5421 | WC_MASK_FIELD(wc, dl_dst); |
5422 | flow->dl_dst = ofpact_get_SET_ETH_DST(a)->mac; | |
9583bc14 EJ |
5423 | break; |
5424 | ||
5425 | case OFPACT_SET_IPV4_SRC: | |
33bf9176 | 5426 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 5427 | memset(&wc->masks.nw_src, 0xff, sizeof wc->masks.nw_src); |
33bf9176 | 5428 | flow->nw_src = ofpact_get_SET_IPV4_SRC(a)->ipv4; |
9583bc14 EJ |
5429 | } |
5430 | break; | |
5431 | ||
5432 | case OFPACT_SET_IPV4_DST: | |
33bf9176 | 5433 | if (flow->dl_type == htons(ETH_TYPE_IP)) { |
f47ea021 | 5434 | memset(&wc->masks.nw_dst, 0xff, sizeof wc->masks.nw_dst); |
33bf9176 | 5435 | flow->nw_dst = ofpact_get_SET_IPV4_DST(a)->ipv4; |
9583bc14 EJ |
5436 | } |
5437 | break; | |
5438 | ||
04f01c24 BP |
5439 | case OFPACT_SET_IP_DSCP: |
5440 | if (is_ip_any(flow)) { | |
f47ea021 | 5441 | wc->masks.nw_tos |= IP_DSCP_MASK; |
33bf9176 | 5442 | flow->nw_tos &= ~IP_DSCP_MASK; |
04f01c24 | 5443 | flow->nw_tos |= ofpact_get_SET_IP_DSCP(a)->dscp; |
9583bc14 EJ |
5444 | } |
5445 | break; | |
5446 | ||
ff14eb7a JR |
5447 | case OFPACT_SET_IP_ECN: |
5448 | if (is_ip_any(flow)) { | |
5449 | wc->masks.nw_tos |= IP_ECN_MASK; | |
5450 | flow->nw_tos &= ~IP_ECN_MASK; | |
5451 | flow->nw_tos |= ofpact_get_SET_IP_ECN(a)->ecn; | |
5452 | } | |
5453 | break; | |
5454 | ||
0c20dbe4 JR |
5455 | case OFPACT_SET_IP_TTL: |
5456 | if (is_ip_any(flow)) { | |
5457 | wc->masks.nw_ttl = 0xff; | |
5458 | flow->nw_ttl = ofpact_get_SET_IP_TTL(a)->ttl; | |
5459 | } | |
5460 | break; | |
5461 | ||
9583bc14 | 5462 | case OFPACT_SET_L4_SRC_PORT: |
b8778a0d | 5463 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
5464 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
5465 | memset(&wc->masks.tp_src, 0xff, sizeof wc->masks.tp_src); | |
33bf9176 | 5466 | flow->tp_src = htons(ofpact_get_SET_L4_SRC_PORT(a)->port); |
9583bc14 EJ |
5467 | } |
5468 | break; | |
5469 | ||
5470 | case OFPACT_SET_L4_DST_PORT: | |
b8778a0d | 5471 | if (is_ip_any(flow) && !(flow->nw_frag & FLOW_NW_FRAG_LATER)) { |
f47ea021 JR |
5472 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
5473 | memset(&wc->masks.tp_dst, 0xff, sizeof wc->masks.tp_dst); | |
33bf9176 | 5474 | flow->tp_dst = htons(ofpact_get_SET_L4_DST_PORT(a)->port); |
9583bc14 EJ |
5475 | } |
5476 | break; | |
5477 | ||
5478 | case OFPACT_RESUBMIT: | |
8bf009bf JR |
5479 | /* Freezing complicates resubmit. Some action in the flow |
5480 | * entry found by resubmit might trigger freezing. If that | |
5481 | * happens, then we do not want to execute the resubmit again after | |
5482 | * during thawing, so we want to skip back to the head of the loop | |
5483 | * to avoid that, only adding any actions that follow the resubmit | |
5484 | * to the frozen actions. | |
6b1c5734 | 5485 | */ |
9583bc14 | 5486 | xlate_ofpact_resubmit(ctx, ofpact_get_RESUBMIT(a)); |
6b1c5734 | 5487 | continue; |
9583bc14 EJ |
5488 | |
5489 | case OFPACT_SET_TUNNEL: | |
33bf9176 | 5490 | flow->tunnel.tun_id = htonll(ofpact_get_SET_TUNNEL(a)->tun_id); |
9583bc14 EJ |
5491 | break; |
5492 | ||
5493 | case OFPACT_SET_QUEUE: | |
16194afd DDP |
5494 | memset(&wc->masks.skb_priority, 0xff, |
5495 | sizeof wc->masks.skb_priority); | |
9583bc14 EJ |
5496 | xlate_set_queue_action(ctx, ofpact_get_SET_QUEUE(a)->queue_id); |
5497 | break; | |
5498 | ||
5499 | case OFPACT_POP_QUEUE: | |
16194afd DDP |
5500 | memset(&wc->masks.skb_priority, 0xff, |
5501 | sizeof wc->masks.skb_priority); | |
2d9b49dd BP |
5502 | if (flow->skb_priority != ctx->orig_skb_priority) { |
5503 | flow->skb_priority = ctx->orig_skb_priority; | |
5504 | xlate_report(ctx, OFT_DETAIL, "queue = %#"PRIx32, | |
5505 | flow->skb_priority); | |
5506 | } | |
9583bc14 EJ |
5507 | break; |
5508 | ||
5509 | case OFPACT_REG_MOVE: | |
2d9b49dd | 5510 | xlate_ofpact_reg_move(ctx, ofpact_get_REG_MOVE(a)); |
9583bc14 EJ |
5511 | break; |
5512 | ||
b2dd70be JR |
5513 | case OFPACT_SET_FIELD: |
5514 | set_field = ofpact_get_SET_FIELD(a); | |
5515 | mf = set_field->field; | |
b2dd70be | 5516 | |
aff49b8c JR |
5517 | /* Set the field only if the packet actually has it. */ |
5518 | if (mf_are_prereqs_ok(mf, flow, wc)) { | |
128684a6 JR |
5519 | mf_mask_field_masked(mf, ofpact_set_field_mask(set_field), wc); |
5520 | mf_set_flow_value_masked(mf, set_field->value, | |
5521 | ofpact_set_field_mask(set_field), | |
5522 | flow); | |
2d9b49dd BP |
5523 | } else { |
5524 | xlate_report(ctx, OFT_WARN, | |
5525 | "unmet prerequisites for %s, set_field ignored", | |
5526 | mf->name); | |
5527 | ||
b8778a0d | 5528 | } |
b2dd70be JR |
5529 | break; |
5530 | ||
9583bc14 | 5531 | case OFPACT_STACK_PUSH: |
33bf9176 BP |
5532 | nxm_execute_stack_push(ofpact_get_STACK_PUSH(a), flow, wc, |
5533 | &ctx->stack); | |
9583bc14 EJ |
5534 | break; |
5535 | ||
5536 | case OFPACT_STACK_POP: | |
2d9b49dd | 5537 | xlate_ofpact_stack_pop(ctx, ofpact_get_STACK_POP(a)); |
9583bc14 EJ |
5538 | break; |
5539 | ||
5540 | case OFPACT_PUSH_MPLS: | |
8bfd0fda | 5541 | compose_mpls_push_action(ctx, ofpact_get_PUSH_MPLS(a)); |
9583bc14 EJ |
5542 | break; |
5543 | ||
5544 | case OFPACT_POP_MPLS: | |
8bfd0fda | 5545 | compose_mpls_pop_action(ctx, ofpact_get_POP_MPLS(a)->ethertype); |
9583bc14 EJ |
5546 | break; |
5547 | ||
097d4939 | 5548 | case OFPACT_SET_MPLS_LABEL: |
8bfd0fda BP |
5549 | compose_set_mpls_label_action( |
5550 | ctx, ofpact_get_SET_MPLS_LABEL(a)->label); | |
1d741d6d | 5551 | break; |
097d4939 JR |
5552 | |
5553 | case OFPACT_SET_MPLS_TC: | |
8bfd0fda | 5554 | compose_set_mpls_tc_action(ctx, ofpact_get_SET_MPLS_TC(a)->tc); |
097d4939 JR |
5555 | break; |
5556 | ||
9583bc14 | 5557 | case OFPACT_SET_MPLS_TTL: |
8bfd0fda | 5558 | compose_set_mpls_ttl_action(ctx, ofpact_get_SET_MPLS_TTL(a)->ttl); |
9583bc14 EJ |
5559 | break; |
5560 | ||
5561 | case OFPACT_DEC_MPLS_TTL: | |
9cfef3d0 | 5562 | if (compose_dec_mpls_ttl_action(ctx)) { |
ad3efdcb | 5563 | return; |
9583bc14 EJ |
5564 | } |
5565 | break; | |
5566 | ||
5567 | case OFPACT_DEC_TTL: | |
f74e7df7 | 5568 | wc->masks.nw_ttl = 0xff; |
9583bc14 | 5569 | if (compose_dec_ttl(ctx, ofpact_get_DEC_TTL(a))) { |
ad3efdcb | 5570 | return; |
9583bc14 EJ |
5571 | } |
5572 | break; | |
5573 | ||
5574 | case OFPACT_NOTE: | |
5575 | /* Nothing to do. */ | |
5576 | break; | |
5577 | ||
5578 | case OFPACT_MULTIPATH: | |
33bf9176 | 5579 | multipath_execute(ofpact_get_MULTIPATH(a), flow, wc); |
2d9b49dd | 5580 | xlate_report_subfield(ctx, &ofpact_get_MULTIPATH(a)->dst); |
9583bc14 EJ |
5581 | break; |
5582 | ||
5583 | case OFPACT_BUNDLE: | |
9583bc14 EJ |
5584 | xlate_bundle_action(ctx, ofpact_get_BUNDLE(a)); |
5585 | break; | |
5586 | ||
5587 | case OFPACT_OUTPUT_REG: | |
5588 | xlate_output_reg_action(ctx, ofpact_get_OUTPUT_REG(a)); | |
5589 | break; | |
5590 | ||
aaca4fe0 WT |
5591 | case OFPACT_OUTPUT_TRUNC: |
5592 | xlate_output_trunc_action(ctx, ofpact_get_OUTPUT_TRUNC(a)->port, | |
5593 | ofpact_get_OUTPUT_TRUNC(a)->max_len); | |
5594 | break; | |
5595 | ||
9583bc14 EJ |
5596 | case OFPACT_LEARN: |
5597 | xlate_learn_action(ctx, ofpact_get_LEARN(a)); | |
5598 | break; | |
5599 | ||
2d9b49dd | 5600 | case OFPACT_CONJUNCTION: |
afc3987b BP |
5601 | /* A flow with a "conjunction" action represents part of a special |
5602 | * kind of "set membership match". Such a flow should not actually | |
5603 | * get executed, but it could via, say, a "packet-out", even though | |
5604 | * that wouldn't be useful. Log it to help debugging. */ | |
2d9b49dd | 5605 | xlate_report_error(ctx, "executing no-op conjunction action"); |
18080541 BP |
5606 | break; |
5607 | ||
9583bc14 EJ |
5608 | case OFPACT_EXIT: |
5609 | ctx->exit = true; | |
5610 | break; | |
5611 | ||
2d9b49dd BP |
5612 | case OFPACT_UNROLL_XLATE: |
5613 | xlate_ofpact_unroll_xlate(ctx, ofpact_get_UNROLL_XLATE(a)); | |
e672ff9b | 5614 | break; |
2d9b49dd | 5615 | |
9583bc14 | 5616 | case OFPACT_FIN_TIMEOUT: |
33bf9176 | 5617 | memset(&wc->masks.nw_proto, 0xff, sizeof wc->masks.nw_proto); |
9583bc14 EJ |
5618 | xlate_fin_timeout(ctx, ofpact_get_FIN_TIMEOUT(a)); |
5619 | break; | |
5620 | ||
5621 | case OFPACT_CLEAR_ACTIONS: | |
2d9b49dd | 5622 | xlate_report_action_set(ctx, "was"); |
7fdb60a7 | 5623 | ofpbuf_clear(&ctx->action_set); |
c61f3870 BP |
5624 | ctx->xin->flow.actset_output = OFPP_UNSET; |
5625 | ctx->action_set_has_group = false; | |
7fdb60a7 SH |
5626 | break; |
5627 | ||
5628 | case OFPACT_WRITE_ACTIONS: | |
7e7e8dbb | 5629 | xlate_write_actions(ctx, ofpact_get_WRITE_ACTIONS(a)); |
2d9b49dd | 5630 | xlate_report_action_set(ctx, "is"); |
9583bc14 EJ |
5631 | break; |
5632 | ||
5633 | case OFPACT_WRITE_METADATA: | |
5634 | metadata = ofpact_get_WRITE_METADATA(a); | |
33bf9176 BP |
5635 | flow->metadata &= ~metadata->mask; |
5636 | flow->metadata |= metadata->metadata & metadata->mask; | |
9583bc14 EJ |
5637 | break; |
5638 | ||
638a19b0 | 5639 | case OFPACT_METER: |
076caa2f | 5640 | xlate_meter_action(ctx, ofpact_get_METER(a)); |
638a19b0 JR |
5641 | break; |
5642 | ||
9583bc14 | 5643 | case OFPACT_GOTO_TABLE: { |
9583bc14 | 5644 | struct ofpact_goto_table *ogt = ofpact_get_GOTO_TABLE(a); |
9583bc14 | 5645 | |
9167fc1a JR |
5646 | ovs_assert(ctx->table_id < ogt->table_id); |
5647 | ||
4468099e | 5648 | xlate_table_action(ctx, ctx->xin->flow.in_port.ofp_port, |
2cd20955 | 5649 | ogt->table_id, true, true, false); |
9583bc14 EJ |
5650 | break; |
5651 | } | |
5652 | ||
5653 | case OFPACT_SAMPLE: | |
5654 | xlate_sample_action(ctx, ofpact_get_SAMPLE(a)); | |
5655 | break; | |
d4abaff5 | 5656 | |
7ae62a67 | 5657 | case OFPACT_CLONE: |
bef503e8 | 5658 | xlate_clone(ctx, ofpact_get_CLONE(a)); |
7ae62a67 WT |
5659 | break; |
5660 | ||
07659514 | 5661 | case OFPACT_CT: |
07659514 JS |
5662 | compose_conntrack_action(ctx, ofpact_get_CT(a)); |
5663 | break; | |
5664 | ||
72fe7578 BP |
5665 | case OFPACT_CT_CLEAR: |
5666 | clear_conntrack(ctx); | |
5667 | break; | |
5668 | ||
9ac0aada JR |
5669 | case OFPACT_NAT: |
5670 | /* This will be processed by compose_conntrack_action(). */ | |
5671 | ctx->ct_nat_action = ofpact_get_NAT(a); | |
5672 | break; | |
5673 | ||
d4abaff5 | 5674 | case OFPACT_DEBUG_RECIRC: |
1d361a81 | 5675 | ctx_trigger_freeze(ctx); |
d4abaff5 BP |
5676 | a = ofpact_next(a); |
5677 | break; | |
9583bc14 | 5678 | } |
1d741d6d JR |
5679 | |
5680 | /* Check if need to store this and the remaining actions for later | |
5681 | * execution. */ | |
1d361a81 BP |
5682 | if (!ctx->error && ctx->exit && ctx_first_frozen_action(ctx)) { |
5683 | freeze_unroll_actions(a, ofpact_end(ofpacts, ofpacts_len), ctx); | |
1d741d6d JR |
5684 | break; |
5685 | } | |
9583bc14 | 5686 | } |
9583bc14 EJ |
5687 | } |
5688 | ||
5689 | void | |
5690 | xlate_in_init(struct xlate_in *xin, struct ofproto_dpif *ofproto, | |
1f4a8933 JR |
5691 | ovs_version_t version, const struct flow *flow, |
5692 | ofp_port_t in_port, struct rule_dpif *rule, uint16_t tcp_flags, | |
1520ef4f BP |
5693 | const struct dp_packet *packet, struct flow_wildcards *wc, |
5694 | struct ofpbuf *odp_actions) | |
9583bc14 EJ |
5695 | { |
5696 | xin->ofproto = ofproto; | |
1f4a8933 | 5697 | xin->tables_version = version; |
9583bc14 | 5698 | xin->flow = *flow; |
8d8ab6c2 | 5699 | xin->upcall_flow = flow; |
cc377352 | 5700 | xin->flow.in_port.ofp_port = in_port; |
c61f3870 | 5701 | xin->flow.actset_output = OFPP_UNSET; |
9583bc14 | 5702 | xin->packet = packet; |
df70a773 | 5703 | xin->allow_side_effects = packet != NULL; |
9583bc14 | 5704 | xin->rule = rule; |
b256dc52 | 5705 | xin->xcache = NULL; |
9583bc14 EJ |
5706 | xin->ofpacts = NULL; |
5707 | xin->ofpacts_len = 0; | |
5708 | xin->tcp_flags = tcp_flags; | |
2d9b49dd | 5709 | xin->trace = NULL; |
9583bc14 | 5710 | xin->resubmit_stats = NULL; |
790c5d26 | 5711 | xin->depth = 0; |
cdd42eda | 5712 | xin->resubmits = 0; |
49a73e0c | 5713 | xin->wc = wc; |
1520ef4f | 5714 | xin->odp_actions = odp_actions; |
e672ff9b JR |
5715 | |
5716 | /* Do recirc lookup. */ | |
1d361a81 | 5717 | xin->frozen_state = NULL; |
29b1ea3f BP |
5718 | if (flow->recirc_id) { |
5719 | const struct recirc_id_node *node | |
5720 | = recirc_id_node_find(flow->recirc_id); | |
5721 | if (node) { | |
1d361a81 | 5722 | xin->frozen_state = &node->state; |
29b1ea3f BP |
5723 | } |
5724 | } | |
9583bc14 EJ |
5725 | } |
5726 | ||
5727 | void | |
5728 | xlate_out_uninit(struct xlate_out *xout) | |
5729 | { | |
e672ff9b | 5730 | if (xout) { |
fbf5d6ec | 5731 | recirc_refs_unref(&xout->recircs); |
9583bc14 EJ |
5732 | } |
5733 | } | |
9583bc14 | 5734 | \f |
55954f6e EJ |
5735 | static struct skb_priority_to_dscp * |
5736 | get_skb_priority(const struct xport *xport, uint32_t skb_priority) | |
5737 | { | |
5738 | struct skb_priority_to_dscp *pdscp; | |
5739 | uint32_t hash; | |
5740 | ||
5741 | hash = hash_int(skb_priority, 0); | |
5742 | HMAP_FOR_EACH_IN_BUCKET (pdscp, hmap_node, hash, &xport->skb_priorities) { | |
5743 | if (pdscp->skb_priority == skb_priority) { | |
5744 | return pdscp; | |
5745 | } | |
5746 | } | |
5747 | return NULL; | |
5748 | } | |
5749 | ||
5750 | static bool | |
5751 | dscp_from_skb_priority(const struct xport *xport, uint32_t skb_priority, | |
5752 | uint8_t *dscp) | |
5753 | { | |
5754 | struct skb_priority_to_dscp *pdscp = get_skb_priority(xport, skb_priority); | |
5755 | *dscp = pdscp ? pdscp->dscp : 0; | |
5756 | return pdscp != NULL; | |
5757 | } | |
5758 | ||
16194afd DDP |
5759 | static size_t |
5760 | count_skb_priorities(const struct xport *xport) | |
5761 | { | |
5762 | return hmap_count(&xport->skb_priorities); | |
5763 | } | |
5764 | ||
55954f6e EJ |
5765 | static void |
5766 | clear_skb_priorities(struct xport *xport) | |
5767 | { | |
4ec3d7c7 | 5768 | struct skb_priority_to_dscp *pdscp; |
55954f6e | 5769 | |
4ec3d7c7 | 5770 | HMAP_FOR_EACH_POP (pdscp, hmap_node, &xport->skb_priorities) { |
55954f6e EJ |
5771 | free(pdscp); |
5772 | } | |
5773 | } | |
5774 | ||
ce4a6b76 BP |
5775 | static bool |
5776 | actions_output_to_local_port(const struct xlate_ctx *ctx) | |
5777 | { | |
46c88433 | 5778 | odp_port_t local_odp_port = ofp_port_to_odp_port(ctx->xbridge, OFPP_LOCAL); |
ce4a6b76 BP |
5779 | const struct nlattr *a; |
5780 | unsigned int left; | |
5781 | ||
1520ef4f BP |
5782 | NL_ATTR_FOR_EACH_UNSAFE (a, left, ctx->odp_actions->data, |
5783 | ctx->odp_actions->size) { | |
ce4a6b76 BP |
5784 | if (nl_attr_type(a) == OVS_ACTION_ATTR_OUTPUT |
5785 | && nl_attr_get_odp_port(a) == local_odp_port) { | |
5786 | return true; | |
5787 | } | |
5788 | } | |
5789 | return false; | |
5790 | } | |
9583bc14 | 5791 | |
5e2a6702 | 5792 | #if defined(__linux__) |
7d031d7e BP |
5793 | /* Returns the maximum number of packets that the Linux kernel is willing to |
5794 | * queue up internally to certain kinds of software-implemented ports, or the | |
5795 | * default (and rarely modified) value if it cannot be determined. */ | |
5796 | static int | |
5797 | netdev_max_backlog(void) | |
5798 | { | |
5799 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
5800 | static int max_backlog = 1000; /* The normal default value. */ | |
5801 | ||
5802 | if (ovsthread_once_start(&once)) { | |
5803 | static const char filename[] = "/proc/sys/net/core/netdev_max_backlog"; | |
5804 | FILE *stream; | |
5805 | int n; | |
5806 | ||
5807 | stream = fopen(filename, "r"); | |
5808 | if (!stream) { | |
120c348f | 5809 | VLOG_INFO("%s: open failed (%s)", filename, ovs_strerror(errno)); |
7d031d7e BP |
5810 | } else { |
5811 | if (fscanf(stream, "%d", &n) != 1) { | |
5812 | VLOG_WARN("%s: read error", filename); | |
5813 | } else if (n <= 100) { | |
5814 | VLOG_WARN("%s: unexpectedly small value %d", filename, n); | |
5815 | } else { | |
5816 | max_backlog = n; | |
5817 | } | |
5818 | fclose(stream); | |
5819 | } | |
5820 | ovsthread_once_done(&once); | |
5821 | ||
5822 | VLOG_DBG("%s: using %d max_backlog", filename, max_backlog); | |
5823 | } | |
5824 | ||
5825 | return max_backlog; | |
5826 | } | |
5827 | ||
5828 | /* Counts and returns the number of OVS_ACTION_ATTR_OUTPUT actions in | |
5829 | * 'odp_actions'. */ | |
5830 | static int | |
5831 | count_output_actions(const struct ofpbuf *odp_actions) | |
5832 | { | |
5833 | const struct nlattr *a; | |
5834 | size_t left; | |
5835 | int n = 0; | |
5836 | ||
6fd6ed71 | 5837 | NL_ATTR_FOR_EACH_UNSAFE (a, left, odp_actions->data, odp_actions->size) { |
7d031d7e BP |
5838 | if (a->nla_type == OVS_ACTION_ATTR_OUTPUT) { |
5839 | n++; | |
5840 | } | |
5841 | } | |
5842 | return n; | |
5843 | } | |
5e2a6702 | 5844 | #endif /* defined(__linux__) */ |
7d031d7e BP |
5845 | |
5846 | /* Returns true if 'odp_actions' contains more output actions than the datapath | |
5847 | * can reliably handle in one go. On Linux, this is the value of the | |
5848 | * net.core.netdev_max_backlog sysctl, which limits the maximum number of | |
5849 | * packets that the kernel is willing to queue up for processing while the | |
5850 | * datapath is processing a set of actions. */ | |
5851 | static bool | |
5e2a6702 | 5852 | too_many_output_actions(const struct ofpbuf *odp_actions OVS_UNUSED) |
7d031d7e BP |
5853 | { |
5854 | #ifdef __linux__ | |
6fd6ed71 | 5855 | return (odp_actions->size / NL_A_U32_SIZE > netdev_max_backlog() |
7d031d7e BP |
5856 | && count_output_actions(odp_actions) > netdev_max_backlog()); |
5857 | #else | |
5858 | /* OSes other than Linux might have similar limits, but we don't know how | |
5859 | * to determine them.*/ | |
5860 | return false; | |
5861 | #endif | |
5862 | } | |
5863 | ||
234c3da9 BP |
5864 | static void |
5865 | xlate_wc_init(struct xlate_ctx *ctx) | |
5866 | { | |
5867 | flow_wildcards_init_catchall(ctx->wc); | |
5868 | ||
5869 | /* Some fields we consider to always be examined. */ | |
5e2e998a JR |
5870 | WC_MASK_FIELD(ctx->wc, in_port); |
5871 | WC_MASK_FIELD(ctx->wc, dl_type); | |
234c3da9 | 5872 | if (is_ip_any(&ctx->xin->flow)) { |
5e2e998a | 5873 | WC_MASK_FIELD_MASK(ctx->wc, nw_frag, FLOW_NW_FRAG_MASK); |
234c3da9 BP |
5874 | } |
5875 | ||
5876 | if (ctx->xbridge->support.odp.recirc) { | |
5877 | /* Always exactly match recirc_id when datapath supports | |
5878 | * recirculation. */ | |
5e2e998a | 5879 | WC_MASK_FIELD(ctx->wc, recirc_id); |
234c3da9 BP |
5880 | } |
5881 | ||
5882 | if (ctx->xbridge->netflow) { | |
5883 | netflow_mask_wc(&ctx->xin->flow, ctx->wc); | |
5884 | } | |
5885 | ||
5886 | tnl_wc_init(&ctx->xin->flow, ctx->wc); | |
5887 | } | |
5888 | ||
5889 | static void | |
5890 | xlate_wc_finish(struct xlate_ctx *ctx) | |
5891 | { | |
5892 | /* Clear the metadata and register wildcard masks, because we won't | |
5893 | * use non-header fields as part of the cache. */ | |
5894 | flow_wildcards_clear_non_packet_fields(ctx->wc); | |
5895 | ||
5896 | /* ICMPv4 and ICMPv6 have 8-bit "type" and "code" fields. struct flow | |
5897 | * uses the low 8 bits of the 16-bit tp_src and tp_dst members to | |
5898 | * represent these fields. The datapath interface, on the other hand, | |
5899 | * represents them with just 8 bits each. This means that if the high | |
5900 | * 8 bits of the masks for these fields somehow become set, then they | |
5901 | * will get chopped off by a round trip through the datapath, and | |
5902 | * revalidation will spot that as an inconsistency and delete the flow. | |
5903 | * Avoid the problem here by making sure that only the low 8 bits of | |
5904 | * either field can be unwildcarded for ICMP. | |
5905 | */ | |
a75636c8 | 5906 | if (is_icmpv4(&ctx->xin->flow, NULL) || is_icmpv6(&ctx->xin->flow, NULL)) { |
234c3da9 BP |
5907 | ctx->wc->masks.tp_src &= htons(UINT8_MAX); |
5908 | ctx->wc->masks.tp_dst &= htons(UINT8_MAX); | |
5909 | } | |
5910 | /* VLAN_TCI CFI bit must be matched if any of the TCI is matched. */ | |
5911 | if (ctx->wc->masks.vlan_tci) { | |
5912 | ctx->wc->masks.vlan_tci |= htons(VLAN_CFI); | |
5913 | } | |
4a7ab326 DDP |
5914 | |
5915 | /* The classifier might return masks that match on tp_src and tp_dst even | |
5916 | * for later fragments. This happens because there might be flows that | |
5917 | * match on tp_src or tp_dst without matching on the frag bits, because | |
5918 | * it is not a prerequisite for OpenFlow. Since it is a prerequisite for | |
5919 | * datapath flows and since tp_src and tp_dst are always going to be 0, | |
5920 | * wildcard the fields here. */ | |
5921 | if (ctx->xin->flow.nw_frag & FLOW_NW_FRAG_LATER) { | |
5922 | ctx->wc->masks.tp_src = 0; | |
5923 | ctx->wc->masks.tp_dst = 0; | |
5924 | } | |
234c3da9 BP |
5925 | } |
5926 | ||
e672ff9b JR |
5927 | /* Translates the flow, actions, or rule in 'xin' into datapath actions in |
5928 | * 'xout'. | |
56450a41 | 5929 | * The caller must take responsibility for eventually freeing 'xout', with |
fff1b9c0 JR |
5930 | * xlate_out_uninit(). |
5931 | * Returns 'XLATE_OK' if translation was successful. In case of an error an | |
5932 | * empty set of actions will be returned in 'xin->odp_actions' (if non-NULL), | |
5933 | * so that most callers may ignore the return value and transparently install a | |
5934 | * drop flow when the translation fails. */ | |
5935 | enum xlate_error | |
84f0f298 | 5936 | xlate_actions(struct xlate_in *xin, struct xlate_out *xout) |
9583bc14 | 5937 | { |
e467ea42 BP |
5938 | *xout = (struct xlate_out) { |
5939 | .slow = 0, | |
fbf5d6ec | 5940 | .recircs = RECIRC_REFS_EMPTY_INITIALIZER, |
e467ea42 BP |
5941 | }; |
5942 | ||
84f0f298 | 5943 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
bb00fdef BP |
5944 | struct xbridge *xbridge = xbridge_lookup(xcfg, xin->ofproto); |
5945 | if (!xbridge) { | |
fff1b9c0 | 5946 | return XLATE_BRIDGE_NOT_FOUND; |
bb00fdef BP |
5947 | } |
5948 | ||
33bf9176 BP |
5949 | struct flow *flow = &xin->flow; |
5950 | ||
84cf3c1f | 5951 | uint8_t stack_stub[1024]; |
bb00fdef | 5952 | uint64_t action_set_stub[1024 / 8]; |
1d361a81 | 5953 | uint64_t frozen_actions_stub[1024 / 8]; |
1520ef4f BP |
5954 | uint64_t actions_stub[256 / 8]; |
5955 | struct ofpbuf scratch_actions = OFPBUF_STUB_INITIALIZER(actions_stub); | |
bb00fdef BP |
5956 | struct xlate_ctx ctx = { |
5957 | .xin = xin, | |
5958 | .xout = xout, | |
5959 | .base_flow = *flow, | |
c2b878e0 | 5960 | .orig_tunnel_ipv6_dst = flow_tnl_dst(&flow->tunnel), |
bb00fdef BP |
5961 | .xbridge = xbridge, |
5962 | .stack = OFPBUF_STUB_INITIALIZER(stack_stub), | |
5963 | .rule = xin->rule, | |
c0e638aa BP |
5964 | .wc = (xin->wc |
5965 | ? xin->wc | |
f36efd90 | 5966 | : &(struct flow_wildcards) { .masks = { .dl_type = 0 } }), |
1520ef4f | 5967 | .odp_actions = xin->odp_actions ? xin->odp_actions : &scratch_actions, |
bb00fdef | 5968 | |
790c5d26 | 5969 | .depth = xin->depth, |
cdd42eda | 5970 | .resubmits = xin->resubmits, |
bb00fdef BP |
5971 | .in_group = false, |
5972 | .in_action_set = false, | |
5973 | ||
5974 | .table_id = 0, | |
5975 | .rule_cookie = OVS_BE64_MAX, | |
5976 | .orig_skb_priority = flow->skb_priority, | |
5977 | .sflow_n_outputs = 0, | |
5978 | .sflow_odp_port = 0, | |
2031ef97 | 5979 | .nf_output_iface = NF_OUT_DROP, |
bb00fdef | 5980 | .exit = false, |
fff1b9c0 | 5981 | .error = XLATE_OK, |
3d6151f3 | 5982 | .mirrors = 0, |
bb00fdef | 5983 | |
1d361a81 | 5984 | .freezing = false, |
53cc166a | 5985 | .recirc_update_dp_hash = false, |
1d361a81 | 5986 | .frozen_actions = OFPBUF_STUB_INITIALIZER(frozen_actions_stub), |
77ab5fd2 | 5987 | .pause = NULL, |
bb00fdef | 5988 | |
e12ec36b | 5989 | .was_mpls = false, |
07659514 | 5990 | .conntracked = false, |
bb00fdef | 5991 | |
9ac0aada JR |
5992 | .ct_nat_action = NULL, |
5993 | ||
bb00fdef BP |
5994 | .action_set_has_group = false, |
5995 | .action_set = OFPBUF_STUB_INITIALIZER(action_set_stub), | |
5996 | }; | |
865ca6cf BP |
5997 | |
5998 | /* 'base_flow' reflects the packet as it came in, but we need it to reflect | |
42deb67d PS |
5999 | * the packet as the datapath will treat it for output actions. Our |
6000 | * datapath doesn't retain tunneling information without us re-setting | |
6001 | * it, so clear the tunnel data. | |
865ca6cf | 6002 | */ |
42deb67d | 6003 | |
bb00fdef | 6004 | memset(&ctx.base_flow.tunnel, 0, sizeof ctx.base_flow.tunnel); |
865ca6cf | 6005 | |
1520ef4f | 6006 | ofpbuf_reserve(ctx.odp_actions, NL_A_U32_SIZE); |
c0e638aa | 6007 | xlate_wc_init(&ctx); |
bb00fdef | 6008 | |
46c88433 | 6009 | COVERAGE_INC(xlate_actions); |
9583bc14 | 6010 | |
2d9b49dd BP |
6011 | xin->trace = xlate_report(&ctx, OFT_BRIDGE, "bridge(\"%s\")", |
6012 | xbridge->name); | |
1d361a81 BP |
6013 | if (xin->frozen_state) { |
6014 | const struct frozen_state *state = xin->frozen_state; | |
e672ff9b | 6015 | |
2d9b49dd BP |
6016 | struct ovs_list *old_trace = xin->trace; |
6017 | xin->trace = xlate_report(&ctx, OFT_THAW, "thaw"); | |
d6bef3cc | 6018 | |
e672ff9b | 6019 | if (xin->ofpacts_len > 0 || ctx.rule) { |
2d9b49dd BP |
6020 | xlate_report_error(&ctx, "Recirculation conflict (%s)!", |
6021 | xin->ofpacts_len ? "actions" : "rule"); | |
fff1b9c0 | 6022 | ctx.error = XLATE_RECIRCULATION_CONFLICT; |
1520ef4f | 6023 | goto exit; |
e672ff9b JR |
6024 | } |
6025 | ||
6026 | /* Set the bridge for post-recirculation processing if needed. */ | |
07a3cd5c | 6027 | if (!uuid_equals(&ctx.xbridge->ofproto->uuid, &state->ofproto_uuid)) { |
e672ff9b | 6028 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
2082425c | 6029 | const struct xbridge *new_bridge |
290835f9 | 6030 | = xbridge_lookup_by_uuid(xcfg, &state->ofproto_uuid); |
e672ff9b JR |
6031 | |
6032 | if (OVS_UNLIKELY(!new_bridge)) { | |
6033 | /* Drop the packet if the bridge cannot be found. */ | |
2d9b49dd | 6034 | xlate_report_error(&ctx, "Frozen bridge no longer exists."); |
fff1b9c0 | 6035 | ctx.error = XLATE_BRIDGE_NOT_FOUND; |
2d9b49dd | 6036 | xin->trace = old_trace; |
1520ef4f | 6037 | goto exit; |
e672ff9b JR |
6038 | } |
6039 | ctx.xbridge = new_bridge; | |
1f4a8933 JR |
6040 | /* The bridge is now known so obtain its table version. */ |
6041 | ctx.xin->tables_version | |
6042 | = ofproto_dpif_get_tables_version(ctx.xbridge->ofproto); | |
e672ff9b JR |
6043 | } |
6044 | ||
1d361a81 BP |
6045 | /* Set the thawed table id. Note: A table lookup is done only if there |
6046 | * are no frozen actions. */ | |
2082425c | 6047 | ctx.table_id = state->table_id; |
2d9b49dd BP |
6048 | xlate_report(&ctx, OFT_THAW, |
6049 | "Resuming from table %"PRIu8, ctx.table_id); | |
e672ff9b | 6050 | |
07659514 | 6051 | if (!state->conntracked) { |
72fe7578 | 6052 | clear_conntrack(&ctx); |
07659514 JS |
6053 | } |
6054 | ||
e672ff9b | 6055 | /* Restore pipeline metadata. May change flow's in_port and other |
1d361a81 BP |
6056 | * metadata to the values that existed when freezing was triggered. */ |
6057 | frozen_metadata_to_flow(&state->metadata, flow); | |
e672ff9b JR |
6058 | |
6059 | /* Restore stack, if any. */ | |
2082425c | 6060 | if (state->stack) { |
84cf3c1f | 6061 | ofpbuf_put(&ctx.stack, state->stack, state->stack_size); |
e672ff9b JR |
6062 | } |
6063 | ||
29bae541 BP |
6064 | /* Restore mirror state. */ |
6065 | ctx.mirrors = state->mirrors; | |
6066 | ||
e672ff9b | 6067 | /* Restore action set, if any. */ |
2082425c | 6068 | if (state->action_set_len) { |
2d9b49dd | 6069 | xlate_report_actions(&ctx, OFT_THAW, "Restoring action set", |
417509fa | 6070 | state->action_set, state->action_set_len); |
d6bef3cc | 6071 | |
7e7e8dbb BP |
6072 | flow->actset_output = OFPP_UNSET; |
6073 | xlate_write_actions__(&ctx, state->action_set, | |
6074 | state->action_set_len); | |
e672ff9b JR |
6075 | } |
6076 | ||
1d361a81 BP |
6077 | /* Restore frozen actions. If there are no actions, processing will |
6078 | * start with a lookup in the table set above. */ | |
417509fa BP |
6079 | xin->ofpacts = state->ofpacts; |
6080 | xin->ofpacts_len = state->ofpacts_len; | |
6081 | if (state->ofpacts_len) { | |
2d9b49dd | 6082 | xlate_report_actions(&ctx, OFT_THAW, "Restoring actions", |
d6bef3cc | 6083 | xin->ofpacts, xin->ofpacts_len); |
e672ff9b | 6084 | } |
e672ff9b | 6085 | |
2d9b49dd BP |
6086 | xin->trace = old_trace; |
6087 | } else if (OVS_UNLIKELY(flow->recirc_id)) { | |
6088 | xlate_report_error(&ctx, | |
6089 | "Recirculation context not found for ID %"PRIx32, | |
6090 | flow->recirc_id); | |
fff1b9c0 | 6091 | ctx.error = XLATE_NO_RECIRCULATION_CONTEXT; |
1520ef4f | 6092 | goto exit; |
e672ff9b | 6093 | } |
9583bc14 | 6094 | |
8d8ab6c2 JG |
6095 | /* Tunnel metadata in udpif format must be normalized before translation. */ |
6096 | if (flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
5b09d9f7 MS |
6097 | const struct tun_table *tun_tab = ofproto_get_tun_tab( |
6098 | &ctx.xbridge->ofproto->up); | |
8d8ab6c2 JG |
6099 | int err; |
6100 | ||
6101 | err = tun_metadata_from_geneve_udpif(tun_tab, &xin->upcall_flow->tunnel, | |
6102 | &xin->upcall_flow->tunnel, | |
6103 | &flow->tunnel); | |
6104 | if (err) { | |
2d9b49dd | 6105 | xlate_report_error(&ctx, "Invalid Geneve tunnel metadata"); |
8d8ab6c2 JG |
6106 | ctx.error = XLATE_INVALID_TUNNEL_METADATA; |
6107 | goto exit; | |
6108 | } | |
6109 | } else if (!flow->tunnel.metadata.tab) { | |
6110 | /* If the original flow did not come in on a tunnel, then it won't have | |
6111 | * FLOW_TNL_F_UDPIF set. However, we still need to have a metadata | |
6112 | * table in case we generate tunnel actions. */ | |
5b09d9f7 MS |
6113 | flow->tunnel.metadata.tab = ofproto_get_tun_tab( |
6114 | &ctx.xbridge->ofproto->up); | |
8d8ab6c2 JG |
6115 | } |
6116 | ctx.wc->masks.tunnel.metadata.tab = flow->tunnel.metadata.tab; | |
6117 | ||
10c44245 | 6118 | if (!xin->ofpacts && !ctx.rule) { |
b2e89cc9 | 6119 | ctx.rule = rule_dpif_lookup_from_table( |
1f4a8933 | 6120 | ctx.xbridge->ofproto, ctx.xin->tables_version, flow, ctx.wc, |
1e1e1d19 | 6121 | ctx.xin->resubmit_stats, &ctx.table_id, |
a027899e | 6122 | flow->in_port.ofp_port, true, true, ctx.xin->xcache); |
10c44245 | 6123 | if (ctx.xin->resubmit_stats) { |
b2e89cc9 | 6124 | rule_dpif_credit_stats(ctx.rule, ctx.xin->resubmit_stats); |
10c44245 | 6125 | } |
b256dc52 JS |
6126 | if (ctx.xin->xcache) { |
6127 | struct xc_entry *entry; | |
6128 | ||
6129 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_RULE); | |
901a517e | 6130 | entry->rule = ctx.rule; |
07a3cd5c | 6131 | ofproto_rule_ref(&ctx.rule->up); |
b256dc52 | 6132 | } |
a8c31348 | 6133 | |
2d9b49dd | 6134 | xlate_report_table(&ctx, ctx.rule, ctx.table_id); |
10c44245 | 6135 | } |
10c44245 | 6136 | |
1d361a81 | 6137 | /* Get the proximate input port of the packet. (If xin->frozen_state, |
14d2b8b2 BP |
6138 | * flow->in_port is the ultimate input port of the packet.) */ |
6139 | struct xport *in_port = get_ofp_port(xbridge, | |
6140 | ctx.base_flow.in_port.ofp_port); | |
6141 | ||
1d361a81 BP |
6142 | /* Tunnel stats only for not-thawed packets. */ |
6143 | if (!xin->frozen_state && in_port && in_port->is_tunnel) { | |
b256dc52 JS |
6144 | if (ctx.xin->resubmit_stats) { |
6145 | netdev_vport_inc_rx(in_port->netdev, ctx.xin->resubmit_stats); | |
6146 | if (in_port->bfd) { | |
6147 | bfd_account_rx(in_port->bfd, ctx.xin->resubmit_stats); | |
6148 | } | |
6149 | } | |
6150 | if (ctx.xin->xcache) { | |
6151 | struct xc_entry *entry; | |
6152 | ||
6153 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETDEV); | |
901a517e JR |
6154 | entry->dev.rx = netdev_ref(in_port->netdev); |
6155 | entry->dev.bfd = bfd_ref(in_port->bfd); | |
d6fc5f57 EJ |
6156 | } |
6157 | } | |
6158 | ||
1d361a81 | 6159 | if (!xin->frozen_state && process_special(&ctx, in_port)) { |
bef1403e BP |
6160 | /* process_special() did all the processing for this packet. |
6161 | * | |
1d361a81 BP |
6162 | * We do not perform special processing on thawed packets, since that |
6163 | * was done before they were frozen and should not be redone. */ | |
bef1403e BP |
6164 | } else if (in_port && in_port->xbundle |
6165 | && xbundle_mirror_out(xbridge, in_port->xbundle)) { | |
2d9b49dd BP |
6166 | xlate_report_error(&ctx, "dropping packet received on port " |
6167 | "%s, which is reserved exclusively for mirroring", | |
6168 | in_port->xbundle->name); | |
bef1403e | 6169 | } else { |
1d361a81 | 6170 | /* Sampling is done on initial reception; don't redo after thawing. */ |
a6092018 | 6171 | unsigned int user_cookie_offset = 0; |
1d361a81 | 6172 | if (!xin->frozen_state) { |
a6092018 BP |
6173 | user_cookie_offset = compose_sflow_action(&ctx); |
6174 | compose_ipfix_action(&ctx, ODPP_NONE); | |
e672ff9b | 6175 | } |
0731abc5 | 6176 | size_t sample_actions_len = ctx.odp_actions->size; |
9583bc14 | 6177 | |
234c3da9 BP |
6178 | if (tnl_process_ecn(flow) |
6179 | && (!in_port || may_receive(in_port, &ctx))) { | |
1806291d BP |
6180 | const struct ofpact *ofpacts; |
6181 | size_t ofpacts_len; | |
6182 | ||
6183 | if (xin->ofpacts) { | |
6184 | ofpacts = xin->ofpacts; | |
6185 | ofpacts_len = xin->ofpacts_len; | |
6186 | } else if (ctx.rule) { | |
6187 | const struct rule_actions *actions | |
07a3cd5c | 6188 | = rule_get_actions(&ctx.rule->up); |
1806291d BP |
6189 | ofpacts = actions->ofpacts; |
6190 | ofpacts_len = actions->ofpacts_len; | |
07a3cd5c | 6191 | ctx.rule_cookie = ctx.rule->up.flow_cookie; |
1806291d BP |
6192 | } else { |
6193 | OVS_NOT_REACHED(); | |
6194 | } | |
6195 | ||
7efbc3b7 | 6196 | mirror_ingress_packet(&ctx); |
9583bc14 | 6197 | do_xlate_actions(ofpacts, ofpacts_len, &ctx); |
fff1b9c0 JR |
6198 | if (ctx.error) { |
6199 | goto exit; | |
6200 | } | |
9583bc14 EJ |
6201 | |
6202 | /* We've let OFPP_NORMAL and the learning action look at the | |
1d361a81 | 6203 | * packet, so cancel all actions and freezing if forwarding is |
8a5fb3b4 | 6204 | * disabled. */ |
9efd308e DV |
6205 | if (in_port && (!xport_stp_forward_state(in_port) || |
6206 | !xport_rstp_forward_state(in_port))) { | |
1520ef4f | 6207 | ctx.odp_actions->size = sample_actions_len; |
1d361a81 | 6208 | ctx_cancel_freeze(&ctx); |
8a5fb3b4 BP |
6209 | ofpbuf_clear(&ctx.action_set); |
6210 | } | |
6211 | ||
1d361a81 | 6212 | if (!ctx.freezing) { |
8a5fb3b4 | 6213 | xlate_action_set(&ctx); |
e672ff9b | 6214 | } |
1d361a81 | 6215 | if (ctx.freezing) { |
77ab5fd2 | 6216 | finish_freezing(&ctx); |
9583bc14 EJ |
6217 | } |
6218 | } | |
6219 | ||
e672ff9b | 6220 | /* Output only fully processed packets. */ |
1d361a81 | 6221 | if (!ctx.freezing |
e672ff9b | 6222 | && xbridge->has_in_band |
ce4a6b76 BP |
6223 | && in_band_must_output_to_local_port(flow) |
6224 | && !actions_output_to_local_port(&ctx)) { | |
e93ef1c7 | 6225 | compose_output_action(&ctx, OFPP_LOCAL, NULL); |
9583bc14 | 6226 | } |
aaa0fbae | 6227 | |
a6092018 BP |
6228 | if (user_cookie_offset) { |
6229 | fix_sflow_action(&ctx, user_cookie_offset); | |
e672ff9b | 6230 | } |
9583bc14 EJ |
6231 | } |
6232 | ||
1520ef4f | 6233 | if (nl_attr_oversized(ctx.odp_actions->size)) { |
542024c4 | 6234 | /* These datapath actions are too big for a Netlink attribute, so we |
0f032e95 BP |
6235 | * can't hand them to the kernel directly. dpif_execute() can execute |
6236 | * them one by one with help, so just mark the result as SLOW_ACTION to | |
6237 | * prevent the flow from being installed. */ | |
6238 | COVERAGE_INC(xlate_actions_oversize); | |
6239 | ctx.xout->slow |= SLOW_ACTION; | |
1520ef4f | 6240 | } else if (too_many_output_actions(ctx.odp_actions)) { |
7d031d7e BP |
6241 | COVERAGE_INC(xlate_actions_too_many_output); |
6242 | ctx.xout->slow |= SLOW_ACTION; | |
542024c4 BP |
6243 | } |
6244 | ||
1d361a81 BP |
6245 | /* Do netflow only for packets on initial reception, that are not sent to |
6246 | * the controller. We consider packets sent to the controller to be part | |
6247 | * of the control plane rather than the data plane. */ | |
6248 | if (!xin->frozen_state | |
6249 | && xbridge->netflow | |
6250 | && !(xout->slow & SLOW_CONTROLLER)) { | |
1806291d BP |
6251 | if (ctx.xin->resubmit_stats) { |
6252 | netflow_flow_update(xbridge->netflow, flow, | |
2031ef97 | 6253 | ctx.nf_output_iface, |
1806291d BP |
6254 | ctx.xin->resubmit_stats); |
6255 | } | |
6256 | if (ctx.xin->xcache) { | |
6257 | struct xc_entry *entry; | |
b256dc52 | 6258 | |
1806291d | 6259 | entry = xlate_cache_add_entry(ctx.xin->xcache, XC_NETFLOW); |
901a517e JR |
6260 | entry->nf.netflow = netflow_ref(xbridge->netflow); |
6261 | entry->nf.flow = xmemdup(flow, sizeof *flow); | |
6262 | entry->nf.iface = ctx.nf_output_iface; | |
d6fc5f57 EJ |
6263 | } |
6264 | } | |
6265 | ||
8d8ab6c2 JG |
6266 | /* Translate tunnel metadata masks to udpif format if necessary. */ |
6267 | if (xin->upcall_flow->tunnel.flags & FLOW_TNL_F_UDPIF) { | |
6268 | if (ctx.wc->masks.tunnel.metadata.present.map) { | |
6269 | const struct flow_tnl *upcall_tnl = &xin->upcall_flow->tunnel; | |
6270 | struct geneve_opt opts[TLV_TOT_OPT_SIZE / | |
6271 | sizeof(struct geneve_opt)]; | |
6272 | ||
6273 | tun_metadata_to_geneve_udpif_mask(&flow->tunnel, | |
6274 | &ctx.wc->masks.tunnel, | |
6275 | upcall_tnl->metadata.opts.gnv, | |
6276 | upcall_tnl->metadata.present.len, | |
6277 | opts); | |
6278 | memset(&ctx.wc->masks.tunnel.metadata, 0, | |
6279 | sizeof ctx.wc->masks.tunnel.metadata); | |
6280 | memcpy(&ctx.wc->masks.tunnel.metadata.opts.gnv, opts, | |
6281 | upcall_tnl->metadata.present.len); | |
6282 | } | |
6283 | ctx.wc->masks.tunnel.metadata.present.len = 0xff; | |
6284 | ctx.wc->masks.tunnel.metadata.tab = NULL; | |
6285 | ctx.wc->masks.tunnel.flags |= FLOW_TNL_F_UDPIF; | |
6286 | } else if (!xin->upcall_flow->tunnel.metadata.tab) { | |
6287 | /* If we didn't have options in UDPIF format and didn't have an existing | |
6288 | * metadata table, then it means that there were no options at all when | |
6289 | * we started processing and any wildcards we picked up were from | |
6290 | * action generation. Without options on the incoming packet, wildcards | |
6291 | * aren't meaningful. To avoid them possibly getting misinterpreted, | |
6292 | * just clear everything. */ | |
6293 | if (ctx.wc->masks.tunnel.metadata.present.map) { | |
6294 | memset(&ctx.wc->masks.tunnel.metadata, 0, | |
6295 | sizeof ctx.wc->masks.tunnel.metadata); | |
6296 | } else { | |
6297 | ctx.wc->masks.tunnel.metadata.tab = NULL; | |
6298 | } | |
6299 | } | |
6300 | ||
c0e638aa | 6301 | xlate_wc_finish(&ctx); |
1520ef4f BP |
6302 | |
6303 | exit: | |
8d8ab6c2 JG |
6304 | /* Reset the table to what it was when we came in. If we only fetched |
6305 | * it locally, then it has no meaning outside of flow translation. */ | |
6306 | flow->tunnel.metadata.tab = xin->upcall_flow->tunnel.metadata.tab; | |
6307 | ||
1520ef4f BP |
6308 | ofpbuf_uninit(&ctx.stack); |
6309 | ofpbuf_uninit(&ctx.action_set); | |
1d361a81 | 6310 | ofpbuf_uninit(&ctx.frozen_actions); |
1520ef4f | 6311 | ofpbuf_uninit(&scratch_actions); |
fff1b9c0 JR |
6312 | |
6313 | /* Make sure we return a "drop flow" in case of an error. */ | |
6314 | if (ctx.error) { | |
6315 | xout->slow = 0; | |
6316 | if (xin->odp_actions) { | |
6317 | ofpbuf_clear(xin->odp_actions); | |
6318 | } | |
6319 | } | |
6320 | return ctx.error; | |
91d6cd12 AW |
6321 | } |
6322 | ||
77ab5fd2 BP |
6323 | enum ofperr |
6324 | xlate_resume(struct ofproto_dpif *ofproto, | |
6325 | const struct ofputil_packet_in_private *pin, | |
6326 | struct ofpbuf *odp_actions, | |
6327 | enum slow_path_reason *slow) | |
6328 | { | |
6329 | struct dp_packet packet; | |
6330 | dp_packet_use_const(&packet, pin->public.packet, | |
6331 | pin->public.packet_len); | |
6332 | ||
6333 | struct flow flow; | |
6334 | flow_extract(&packet, &flow); | |
6335 | ||
6336 | struct xlate_in xin; | |
1f4a8933 JR |
6337 | xlate_in_init(&xin, ofproto, ofproto_dpif_get_tables_version(ofproto), |
6338 | &flow, 0, NULL, ntohs(flow.tcp_flags), | |
77ab5fd2 BP |
6339 | &packet, NULL, odp_actions); |
6340 | ||
6341 | struct ofpact_note noop; | |
6342 | ofpact_init_NOTE(&noop); | |
6343 | noop.length = 0; | |
6344 | ||
6345 | bool any_actions = pin->actions_len > 0; | |
6346 | struct frozen_state state = { | |
6347 | .table_id = 0, /* Not the table where NXAST_PAUSE was executed. */ | |
6348 | .ofproto_uuid = pin->bridge, | |
6349 | .stack = pin->stack, | |
84cf3c1f | 6350 | .stack_size = pin->stack_size, |
77ab5fd2 BP |
6351 | .mirrors = pin->mirrors, |
6352 | .conntracked = pin->conntracked, | |
6353 | ||
6354 | /* When there are no actions, xlate_actions() will search the flow | |
6355 | * table. We don't want it to do that (we want it to resume), so | |
6356 | * supply a no-op action if there aren't any. | |
6357 | * | |
6358 | * (We can't necessarily avoid translating actions entirely if there | |
6359 | * aren't any actions, because there might be some finishing-up to do | |
6360 | * at the end of the pipeline, and we don't check for those | |
6361 | * conditions.) */ | |
6362 | .ofpacts = any_actions ? pin->actions : &noop.ofpact, | |
6363 | .ofpacts_len = any_actions ? pin->actions_len : sizeof noop, | |
6364 | ||
6365 | .action_set = pin->action_set, | |
6366 | .action_set_len = pin->action_set_len, | |
6367 | }; | |
6368 | frozen_metadata_from_flow(&state.metadata, | |
6369 | &pin->public.flow_metadata.flow); | |
6370 | xin.frozen_state = &state; | |
6371 | ||
6372 | struct xlate_out xout; | |
6373 | enum xlate_error error = xlate_actions(&xin, &xout); | |
6374 | *slow = xout.slow; | |
6375 | xlate_out_uninit(&xout); | |
6376 | ||
6377 | /* xlate_actions() can generate a number of errors, but only | |
6378 | * XLATE_BRIDGE_NOT_FOUND really stands out to me as one that we should be | |
6379 | * sure to report over OpenFlow. The others could come up in packet-outs | |
6380 | * or regular flow translation and I don't think that it's going to be too | |
6381 | * useful to report them to the controller. */ | |
6382 | return error == XLATE_BRIDGE_NOT_FOUND ? OFPERR_NXR_STALE : 0; | |
6383 | } | |
6384 | ||
2eb79142 JG |
6385 | /* Sends 'packet' out 'ofport'. If 'port' is a tunnel and that tunnel type |
6386 | * supports a notion of an OAM flag, sets it if 'oam' is true. | |
91d6cd12 AW |
6387 | * May modify 'packet'. |
6388 | * Returns 0 if successful, otherwise a positive errno value. */ | |
6389 | int | |
2eb79142 JG |
6390 | xlate_send_packet(const struct ofport_dpif *ofport, bool oam, |
6391 | struct dp_packet *packet) | |
91d6cd12 | 6392 | { |
84f0f298 | 6393 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
91d6cd12 | 6394 | struct xport *xport; |
2eb79142 JG |
6395 | uint64_t ofpacts_stub[1024 / 8]; |
6396 | struct ofpbuf ofpacts; | |
91d6cd12 | 6397 | struct flow flow; |
91d6cd12 | 6398 | |
2eb79142 | 6399 | ofpbuf_use_stack(&ofpacts, ofpacts_stub, sizeof ofpacts_stub); |
91d6cd12 | 6400 | /* Use OFPP_NONE as the in_port to avoid special packet processing. */ |
cf62fa4c | 6401 | flow_extract(packet, &flow); |
b5e7e61a | 6402 | flow.in_port.ofp_port = OFPP_NONE; |
91d6cd12 | 6403 | |
84f0f298 | 6404 | xport = xport_lookup(xcfg, ofport); |
91d6cd12 | 6405 | if (!xport) { |
02ea2703 | 6406 | return EINVAL; |
91d6cd12 | 6407 | } |
2eb79142 JG |
6408 | |
6409 | if (oam) { | |
128684a6 JR |
6410 | const ovs_be16 oam = htons(NX_TUN_FLAG_OAM); |
6411 | ofpact_put_set_field(&ofpacts, mf_from_id(MFF_TUN_FLAGS), &oam, &oam); | |
2eb79142 JG |
6412 | } |
6413 | ||
6414 | ofpact_put_OUTPUT(&ofpacts)->port = xport->ofp_port; | |
e491a67a | 6415 | |
1f4a8933 JR |
6416 | /* Actions here are not referring to anything versionable (flow tables or |
6417 | * groups) so we don't need to worry about the version here. */ | |
6418 | return ofproto_dpif_execute_actions(xport->xbridge->ofproto, | |
6419 | OVS_VERSION_MAX, &flow, NULL, | |
2eb79142 | 6420 | ofpacts.data, ofpacts.size, packet); |
9583bc14 | 6421 | } |
b256dc52 | 6422 | |
901a517e | 6423 | void |
064799a1 JR |
6424 | xlate_mac_learning_update(const struct ofproto_dpif *ofproto, |
6425 | ofp_port_t in_port, struct eth_addr dl_src, | |
6426 | int vlan, bool is_grat_arp) | |
b256dc52 | 6427 | { |
84f0f298 | 6428 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); |
b256dc52 JS |
6429 | struct xbridge *xbridge; |
6430 | struct xbundle *xbundle; | |
b256dc52 | 6431 | |
84f0f298 | 6432 | xbridge = xbridge_lookup(xcfg, ofproto); |
b256dc52 JS |
6433 | if (!xbridge) { |
6434 | return; | |
6435 | } | |
6436 | ||
2d9b49dd | 6437 | xbundle = lookup_input_bundle__(xbridge, in_port, NULL); |
b256dc52 JS |
6438 | if (!xbundle) { |
6439 | return; | |
6440 | } | |
6441 | ||
2d9b49dd | 6442 | update_learning_table__(xbridge, xbundle, dl_src, vlan, is_grat_arp); |
b256dc52 | 6443 | } |
bef503e8 AZ |
6444 | |
6445 | void | |
6446 | xlate_disable_dp_clone(const struct ofproto_dpif *ofproto) | |
6447 | { | |
6448 | struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp); | |
6449 | struct xbridge *xbridge = xbridge_lookup(xcfg, ofproto); | |
6450 | ||
6451 | if (xbridge) { | |
6452 | xbridge->support.clone = false; | |
6453 | } | |
6454 | } |