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e9e28be3 | 1 | /* |
48c6733c | 2 | * Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Nicira, Inc. |
e9e28be3 BP |
3 | * |
4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at: | |
7 | * | |
8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | ||
17 | #include <config.h> | |
d3980822 BP |
18 | |
19 | #include "netdev-linux.h" | |
20 | ||
e9e28be3 | 21 | #include <errno.h> |
8b61709d | 22 | #include <fcntl.h> |
55bc98d6 | 23 | #include <arpa/inet.h> |
8b61709d | 24 | #include <inttypes.h> |
32383c3b | 25 | #include <linux/filter.h> |
c1c9c9c4 | 26 | #include <linux/gen_stats.h> |
bb7d0e22 | 27 | #include <linux/if_ether.h> |
8b61709d BP |
28 | #include <linux/if_tun.h> |
29 | #include <linux/types.h> | |
30 | #include <linux/ethtool.h> | |
63331829 | 31 | #include <linux/mii.h> |
f8500004 | 32 | #include <linux/pkt_cls.h> |
6f42c8ea | 33 | #include <linux/pkt_sched.h> |
e9e28be3 | 34 | #include <linux/rtnetlink.h> |
8b61709d | 35 | #include <linux/sockios.h> |
8b61709d BP |
36 | #include <sys/types.h> |
37 | #include <sys/ioctl.h> | |
38 | #include <sys/socket.h> | |
ac3e3aaa | 39 | #include <sys/utsname.h> |
55bc98d6 | 40 | #include <netpacket/packet.h> |
8b61709d BP |
41 | #include <net/if.h> |
42 | #include <net/if_arp.h> | |
55bc98d6 | 43 | #include <net/if_packet.h> |
8b61709d BP |
44 | #include <net/route.h> |
45 | #include <netinet/in.h> | |
e9e28be3 | 46 | #include <poll.h> |
8b61709d BP |
47 | #include <stdlib.h> |
48 | #include <string.h> | |
49 | #include <unistd.h> | |
e9e28be3 BP |
50 | |
51 | #include "coverage.h" | |
e14deea0 | 52 | #include "dp-packet.h" |
93451a0a | 53 | #include "dpif-netlink.h" |
df1e5a3b | 54 | #include "dpif-netdev.h" |
3e8a2ad1 | 55 | #include "openvswitch/dynamic-string.h" |
8b61709d | 56 | #include "fatal-signal.h" |
93b13be8 | 57 | #include "hash.h" |
ee89ea7b | 58 | #include "openvswitch/hmap.h" |
8b61709d | 59 | #include "netdev-provider.h" |
7fbef77a | 60 | #include "netdev-vport.h" |
45c8d3a1 | 61 | #include "netlink-notifier.h" |
2fe27d5a | 62 | #include "netlink-socket.h" |
c060c4cf | 63 | #include "netlink.h" |
64c96779 | 64 | #include "openvswitch/ofpbuf.h" |
8b61709d | 65 | #include "openflow/openflow.h" |
19c8e9c1 | 66 | #include "ovs-atomic.h" |
8b61709d BP |
67 | #include "packets.h" |
68 | #include "poll-loop.h" | |
7e9dcc0f | 69 | #include "rtnetlink.h" |
ee89ea7b | 70 | #include "openvswitch/shash.h" |
c060c4cf | 71 | #include "socket-util.h" |
19993ef3 | 72 | #include "sset.h" |
1670c579 | 73 | #include "timer.h" |
c060c4cf | 74 | #include "unaligned.h" |
e6211adc | 75 | #include "openvswitch/vlog.h" |
ee89ea7b | 76 | #include "util.h" |
5136ce49 | 77 | |
d98e6007 | 78 | VLOG_DEFINE_THIS_MODULE(netdev_linux); |
d76f09ea | 79 | |
d76f09ea BP |
80 | COVERAGE_DEFINE(netdev_set_policing); |
81 | COVERAGE_DEFINE(netdev_arp_lookup); | |
82 | COVERAGE_DEFINE(netdev_get_ifindex); | |
83 | COVERAGE_DEFINE(netdev_get_hwaddr); | |
84 | COVERAGE_DEFINE(netdev_set_hwaddr); | |
ab985a77 BP |
85 | COVERAGE_DEFINE(netdev_get_ethtool); |
86 | COVERAGE_DEFINE(netdev_set_ethtool); | |
4f925bd3 | 87 | |
8b61709d BP |
88 | \f |
89 | /* These were introduced in Linux 2.6.14, so they might be missing if we have | |
90 | * old headers. */ | |
91 | #ifndef ADVERTISED_Pause | |
92 | #define ADVERTISED_Pause (1 << 13) | |
93 | #endif | |
94 | #ifndef ADVERTISED_Asym_Pause | |
95 | #define ADVERTISED_Asym_Pause (1 << 14) | |
96 | #endif | |
97 | ||
e47bd51a JP |
98 | /* These were introduced in Linux 2.6.24, so they might be missing if we |
99 | * have old headers. */ | |
100 | #ifndef ETHTOOL_GFLAGS | |
101 | #define ETHTOOL_GFLAGS 0x00000025 /* Get flags bitmap(ethtool_value) */ | |
102 | #endif | |
103 | #ifndef ETHTOOL_SFLAGS | |
104 | #define ETHTOOL_SFLAGS 0x00000026 /* Set flags bitmap(ethtool_value) */ | |
105 | #endif | |
106 | ||
c1c9c9c4 BP |
107 | /* This was introduced in Linux 2.6.25, so it might be missing if we have old |
108 | * headers. */ | |
109 | #ifndef TC_RTAB_SIZE | |
110 | #define TC_RTAB_SIZE 1024 | |
111 | #endif | |
112 | ||
b73c8518 SH |
113 | /* Linux 2.6.21 introduced struct tpacket_auxdata. |
114 | * Linux 2.6.27 added the tp_vlan_tci member. | |
115 | * Linux 3.0 defined TP_STATUS_VLAN_VALID. | |
116 | * Linux 3.13 repurposed a padding member for tp_vlan_tpid and defined | |
117 | * TP_STATUS_VLAN_TPID_VALID. | |
118 | * | |
119 | * With all this churn it's easiest to unconditionally define a replacement | |
120 | * structure that has everything we want. | |
121 | */ | |
55bc98d6 BP |
122 | #ifndef PACKET_AUXDATA |
123 | #define PACKET_AUXDATA 8 | |
124 | #endif | |
b73c8518 SH |
125 | #ifndef TP_STATUS_VLAN_VALID |
126 | #define TP_STATUS_VLAN_VALID (1 << 4) | |
127 | #endif | |
128 | #ifndef TP_STATUS_VLAN_TPID_VALID | |
129 | #define TP_STATUS_VLAN_TPID_VALID (1 << 6) | |
130 | #endif | |
131 | #undef tpacket_auxdata | |
132 | #define tpacket_auxdata rpl_tpacket_auxdata | |
133 | struct tpacket_auxdata { | |
134 | uint32_t tp_status; | |
135 | uint32_t tp_len; | |
136 | uint32_t tp_snaplen; | |
137 | uint16_t tp_mac; | |
138 | uint16_t tp_net; | |
139 | uint16_t tp_vlan_tci; | |
140 | uint16_t tp_vlan_tpid; | |
141 | }; | |
142 | ||
0c615356 SH |
143 | /* Linux 2.6.27 introduced ethtool_cmd_speed |
144 | * | |
145 | * To avoid revisiting problems reported with using configure to detect | |
146 | * compatibility (see report at | |
147 | * http://openvswitch.org/pipermail/dev/2014-October/047978.html) | |
148 | * unconditionally replace ethtool_cmd_speed. */ | |
149 | #define ethtool_cmd_speed rpl_ethtool_cmd_speed | |
150 | static inline uint32_t rpl_ethtool_cmd_speed(const struct ethtool_cmd *ep) | |
151 | { | |
152 | return ep->speed | (ep->speed_hi << 16); | |
153 | } | |
154 | ||
67bed84c SH |
155 | /* Linux 2.6.30 introduced supported and advertised flags for |
156 | * 1G base KX, and 10G base KX4, KR and R. */ | |
157 | #ifndef SUPPORTED_1000baseKX_Full | |
158 | #define SUPPORTED_1000baseKX_Full (1 << 17) | |
159 | #define SUPPORTED_10000baseKX4_Full (1 << 18) | |
160 | #define SUPPORTED_10000baseKR_Full (1 << 19) | |
161 | #define SUPPORTED_10000baseR_FEC (1 << 20) | |
162 | #define ADVERTISED_1000baseKX_Full (1 << 17) | |
163 | #define ADVERTISED_10000baseKX4_Full (1 << 18) | |
164 | #define ADVERTISED_10000baseKR_Full (1 << 19) | |
165 | #define ADVERTISED_10000baseR_FEC (1 << 20) | |
166 | #endif | |
167 | ||
168 | /* Linux 3.5 introduced supported and advertised flags for | |
169 | * 40G base KR4, CR4, SR4 and LR4. */ | |
170 | #ifndef SUPPORTED_40000baseKR4_Full | |
171 | #define SUPPORTED_40000baseKR4_Full (1 << 23) | |
172 | #define SUPPORTED_40000baseCR4_Full (1 << 24) | |
173 | #define SUPPORTED_40000baseSR4_Full (1 << 25) | |
174 | #define SUPPORTED_40000baseLR4_Full (1 << 26) | |
175 | #define ADVERTISED_40000baseKR4_Full (1 << 23) | |
176 | #define ADVERTISED_40000baseCR4_Full (1 << 24) | |
177 | #define ADVERTISED_40000baseSR4_Full (1 << 25) | |
178 | #define ADVERTISED_40000baseLR4_Full (1 << 26) | |
179 | #endif | |
180 | ||
fa373af4 BP |
181 | /* Linux 2.6.35 introduced IFLA_STATS64 and rtnl_link_stats64. |
182 | * | |
183 | * Tests for rtnl_link_stats64 don't seem to consistently work, e.g. on | |
184 | * 2.6.32-431.29.2.el6.x86_64 (see report at | |
185 | * http://openvswitch.org/pipermail/dev/2014-October/047978.html). Maybe | |
186 | * if_link.h is not self-contained on those kernels. It is easiest to | |
187 | * unconditionally define a replacement. */ | |
188 | #ifndef IFLA_STATS64 | |
337c9b99 | 189 | #define IFLA_STATS64 23 |
fa373af4 BP |
190 | #endif |
191 | #define rtnl_link_stats64 rpl_rtnl_link_stats64 | |
337c9b99 BP |
192 | struct rtnl_link_stats64 { |
193 | uint64_t rx_packets; | |
194 | uint64_t tx_packets; | |
195 | uint64_t rx_bytes; | |
196 | uint64_t tx_bytes; | |
197 | uint64_t rx_errors; | |
198 | uint64_t tx_errors; | |
199 | uint64_t rx_dropped; | |
200 | uint64_t tx_dropped; | |
201 | uint64_t multicast; | |
202 | uint64_t collisions; | |
203 | ||
204 | uint64_t rx_length_errors; | |
205 | uint64_t rx_over_errors; | |
206 | uint64_t rx_crc_errors; | |
207 | uint64_t rx_frame_errors; | |
208 | uint64_t rx_fifo_errors; | |
209 | uint64_t rx_missed_errors; | |
210 | ||
211 | uint64_t tx_aborted_errors; | |
212 | uint64_t tx_carrier_errors; | |
213 | uint64_t tx_fifo_errors; | |
214 | uint64_t tx_heartbeat_errors; | |
215 | uint64_t tx_window_errors; | |
216 | ||
217 | uint64_t rx_compressed; | |
218 | uint64_t tx_compressed; | |
219 | }; | |
337c9b99 | 220 | |
8b61709d | 221 | enum { |
7fbef77a JG |
222 | VALID_IFINDEX = 1 << 0, |
223 | VALID_ETHERADDR = 1 << 1, | |
6b6e1329 PS |
224 | VALID_IN = 1 << 2, |
225 | VALID_MTU = 1 << 3, | |
226 | VALID_POLICING = 1 << 4, | |
227 | VALID_VPORT_STAT_ERROR = 1 << 5, | |
228 | VALID_DRVINFO = 1 << 6, | |
229 | VALID_FEATURES = 1 << 7, | |
8b61709d | 230 | }; |
c1c9c9c4 BP |
231 | \f |
232 | /* Traffic control. */ | |
233 | ||
234 | /* An instance of a traffic control class. Always associated with a particular | |
93b13be8 BP |
235 | * network device. |
236 | * | |
237 | * Each TC implementation subclasses this with whatever additional data it | |
238 | * needs. */ | |
c1c9c9c4 BP |
239 | struct tc { |
240 | const struct tc_ops *ops; | |
93b13be8 BP |
241 | struct hmap queues; /* Contains "struct tc_queue"s. |
242 | * Read by generic TC layer. | |
243 | * Written only by TC implementation. */ | |
244 | }; | |
c1c9c9c4 | 245 | |
559eb230 BP |
246 | #define TC_INITIALIZER(TC, OPS) { OPS, HMAP_INITIALIZER(&(TC)->queues) } |
247 | ||
93b13be8 BP |
248 | /* One traffic control queue. |
249 | * | |
250 | * Each TC implementation subclasses this with whatever additional data it | |
251 | * needs. */ | |
252 | struct tc_queue { | |
253 | struct hmap_node hmap_node; /* In struct tc's "queues" hmap. */ | |
254 | unsigned int queue_id; /* OpenFlow queue ID. */ | |
6dc34a0d | 255 | long long int created; /* Time queue was created, in msecs. */ |
c1c9c9c4 BP |
256 | }; |
257 | ||
258 | /* A particular kind of traffic control. Each implementation generally maps to | |
259 | * one particular Linux qdisc class. | |
260 | * | |
261 | * The functions below return 0 if successful or a positive errno value on | |
262 | * failure, except where otherwise noted. All of them must be provided, except | |
263 | * where otherwise noted. */ | |
264 | struct tc_ops { | |
265 | /* Name used by kernel in the TCA_KIND attribute of tcmsg, e.g. "htb". | |
266 | * This is null for tc_ops_default and tc_ops_other, for which there are no | |
267 | * appropriate values. */ | |
268 | const char *linux_name; | |
269 | ||
270 | /* Name used in OVS database, e.g. "linux-htb". Must be nonnull. */ | |
271 | const char *ovs_name; | |
272 | ||
273 | /* Number of supported OpenFlow queues, 0 for qdiscs that have no | |
274 | * queues. The queues are numbered 0 through n_queues - 1. */ | |
275 | unsigned int n_queues; | |
276 | ||
277 | /* Called to install this TC class on 'netdev'. The implementation should | |
278 | * make the Netlink calls required to set up 'netdev' with the right qdisc | |
279 | * and configure it according to 'details'. The implementation may assume | |
280 | * that the current qdisc is the default; that is, there is no need for it | |
281 | * to delete the current qdisc before installing itself. | |
282 | * | |
283 | * The contents of 'details' should be documented as valid for 'ovs_name' | |
284 | * in the "other_config" column in the "QoS" table in vswitchd/vswitch.xml | |
285 | * (which is built as ovs-vswitchd.conf.db(8)). | |
286 | * | |
287 | * This function must return 0 if and only if it sets 'netdev->tc' to an | |
288 | * initialized 'struct tc'. | |
289 | * | |
290 | * (This function is null for tc_ops_other, which cannot be installed. For | |
291 | * other TC classes it should always be nonnull.) */ | |
79f1cbe9 | 292 | int (*tc_install)(struct netdev *netdev, const struct smap *details); |
c1c9c9c4 BP |
293 | |
294 | /* Called when the netdev code determines (through a Netlink query) that | |
295 | * this TC class's qdisc is installed on 'netdev', but we didn't install | |
296 | * it ourselves and so don't know any of the details. | |
297 | * | |
298 | * 'nlmsg' is the kernel reply to a RTM_GETQDISC Netlink message for | |
299 | * 'netdev'. The TCA_KIND attribute of 'nlmsg' is 'linux_name'. The | |
300 | * implementation should parse the other attributes of 'nlmsg' as | |
301 | * necessary to determine its configuration. If necessary it should also | |
302 | * use Netlink queries to determine the configuration of queues on | |
303 | * 'netdev'. | |
304 | * | |
305 | * This function must return 0 if and only if it sets 'netdev->tc' to an | |
306 | * initialized 'struct tc'. */ | |
307 | int (*tc_load)(struct netdev *netdev, struct ofpbuf *nlmsg); | |
308 | ||
309 | /* Destroys the data structures allocated by the implementation as part of | |
310 | * 'tc'. (This includes destroying 'tc->queues' by calling | |
311 | * tc_destroy(tc). | |
312 | * | |
313 | * The implementation should not need to perform any Netlink calls. If | |
314 | * desirable, the caller is responsible for deconfiguring the kernel qdisc. | |
315 | * (But it may not be desirable.) | |
316 | * | |
317 | * This function may be null if 'tc' is trivial. */ | |
318 | void (*tc_destroy)(struct tc *tc); | |
319 | ||
320 | /* Retrieves details of 'netdev->tc' configuration into 'details'. | |
321 | * | |
322 | * The implementation should not need to perform any Netlink calls, because | |
323 | * the 'tc_install' or 'tc_load' that instantiated 'netdev->tc' should have | |
324 | * cached the configuration. | |
325 | * | |
326 | * The contents of 'details' should be documented as valid for 'ovs_name' | |
327 | * in the "other_config" column in the "QoS" table in vswitchd/vswitch.xml | |
328 | * (which is built as ovs-vswitchd.conf.db(8)). | |
329 | * | |
330 | * This function may be null if 'tc' is not configurable. | |
331 | */ | |
79f1cbe9 | 332 | int (*qdisc_get)(const struct netdev *netdev, struct smap *details); |
c1c9c9c4 BP |
333 | |
334 | /* Reconfigures 'netdev->tc' according to 'details', performing any | |
335 | * required Netlink calls to complete the reconfiguration. | |
336 | * | |
337 | * The contents of 'details' should be documented as valid for 'ovs_name' | |
338 | * in the "other_config" column in the "QoS" table in vswitchd/vswitch.xml | |
339 | * (which is built as ovs-vswitchd.conf.db(8)). | |
340 | * | |
341 | * This function may be null if 'tc' is not configurable. | |
342 | */ | |
79f1cbe9 | 343 | int (*qdisc_set)(struct netdev *, const struct smap *details); |
c1c9c9c4 | 344 | |
93b13be8 BP |
345 | /* Retrieves details of 'queue' on 'netdev->tc' into 'details'. 'queue' is |
346 | * one of the 'struct tc_queue's within 'netdev->tc->queues'. | |
c1c9c9c4 BP |
347 | * |
348 | * The contents of 'details' should be documented as valid for 'ovs_name' | |
349 | * in the "other_config" column in the "Queue" table in | |
350 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
351 | * | |
352 | * The implementation should not need to perform any Netlink calls, because | |
353 | * the 'tc_install' or 'tc_load' that instantiated 'netdev->tc' should have | |
354 | * cached the queue configuration. | |
355 | * | |
356 | * This function may be null if 'tc' does not have queues ('n_queues' is | |
357 | * 0). */ | |
93b13be8 | 358 | int (*class_get)(const struct netdev *netdev, const struct tc_queue *queue, |
79f1cbe9 | 359 | struct smap *details); |
c1c9c9c4 BP |
360 | |
361 | /* Configures or reconfigures 'queue_id' on 'netdev->tc' according to | |
362 | * 'details', perfoming any required Netlink calls to complete the | |
363 | * reconfiguration. The caller ensures that 'queue_id' is less than | |
364 | * 'n_queues'. | |
365 | * | |
366 | * The contents of 'details' should be documented as valid for 'ovs_name' | |
367 | * in the "other_config" column in the "Queue" table in | |
368 | * vswitchd/vswitch.xml (which is built as ovs-vswitchd.conf.db(8)). | |
369 | * | |
370 | * This function may be null if 'tc' does not have queues or its queues are | |
371 | * not configurable. */ | |
372 | int (*class_set)(struct netdev *, unsigned int queue_id, | |
79f1cbe9 | 373 | const struct smap *details); |
c1c9c9c4 | 374 | |
93b13be8 BP |
375 | /* Deletes 'queue' from 'netdev->tc'. 'queue' is one of the 'struct |
376 | * tc_queue's within 'netdev->tc->queues'. | |
c1c9c9c4 BP |
377 | * |
378 | * This function may be null if 'tc' does not have queues or its queues | |
379 | * cannot be deleted. */ | |
93b13be8 | 380 | int (*class_delete)(struct netdev *, struct tc_queue *queue); |
c1c9c9c4 | 381 | |
93b13be8 BP |
382 | /* Obtains stats for 'queue' from 'netdev->tc'. 'queue' is one of the |
383 | * 'struct tc_queue's within 'netdev->tc->queues'. | |
c1c9c9c4 BP |
384 | * |
385 | * On success, initializes '*stats'. | |
386 | * | |
387 | * This function may be null if 'tc' does not have queues or if it cannot | |
388 | * report queue statistics. */ | |
93b13be8 BP |
389 | int (*class_get_stats)(const struct netdev *netdev, |
390 | const struct tc_queue *queue, | |
c1c9c9c4 BP |
391 | struct netdev_queue_stats *stats); |
392 | ||
393 | /* Extracts queue stats from 'nlmsg', which is a response to a | |
394 | * RTM_GETTCLASS message, and passes them to 'cb' along with 'aux'. | |
395 | * | |
396 | * This function may be null if 'tc' does not have queues or if it cannot | |
397 | * report queue statistics. */ | |
398 | int (*class_dump_stats)(const struct netdev *netdev, | |
399 | const struct ofpbuf *nlmsg, | |
400 | netdev_dump_queue_stats_cb *cb, void *aux); | |
401 | }; | |
402 | ||
403 | static void | |
404 | tc_init(struct tc *tc, const struct tc_ops *ops) | |
405 | { | |
406 | tc->ops = ops; | |
93b13be8 | 407 | hmap_init(&tc->queues); |
c1c9c9c4 BP |
408 | } |
409 | ||
410 | static void | |
411 | tc_destroy(struct tc *tc) | |
412 | { | |
93b13be8 | 413 | hmap_destroy(&tc->queues); |
c1c9c9c4 BP |
414 | } |
415 | ||
416 | static const struct tc_ops tc_ops_htb; | |
a339aa81 | 417 | static const struct tc_ops tc_ops_hfsc; |
677d9158 JV |
418 | static const struct tc_ops tc_ops_codel; |
419 | static const struct tc_ops tc_ops_fqcodel; | |
420 | static const struct tc_ops tc_ops_sfq; | |
c1c9c9c4 | 421 | static const struct tc_ops tc_ops_default; |
6cf888b8 | 422 | static const struct tc_ops tc_ops_noop; |
c1c9c9c4 BP |
423 | static const struct tc_ops tc_ops_other; |
424 | ||
559eb230 | 425 | static const struct tc_ops *const tcs[] = { |
c1c9c9c4 | 426 | &tc_ops_htb, /* Hierarchy token bucket (see tc-htb(8)). */ |
a339aa81 | 427 | &tc_ops_hfsc, /* Hierarchical fair service curve. */ |
677d9158 JV |
428 | &tc_ops_codel, /* Controlled delay */ |
429 | &tc_ops_fqcodel, /* Fair queue controlled delay */ | |
430 | &tc_ops_sfq, /* Stochastic fair queueing */ | |
6cf888b8 | 431 | &tc_ops_noop, /* Non operating qos type. */ |
c1c9c9c4 BP |
432 | &tc_ops_default, /* Default qdisc (see tc-pfifo_fast(8)). */ |
433 | &tc_ops_other, /* Some other qdisc. */ | |
434 | NULL | |
435 | }; | |
149f577a | 436 | |
c1c9c9c4 BP |
437 | static unsigned int tc_make_handle(unsigned int major, unsigned int minor); |
438 | static unsigned int tc_get_major(unsigned int handle); | |
439 | static unsigned int tc_get_minor(unsigned int handle); | |
440 | ||
441 | static unsigned int tc_ticks_to_bytes(unsigned int rate, unsigned int ticks); | |
442 | static unsigned int tc_bytes_to_ticks(unsigned int rate, unsigned int size); | |
443 | static unsigned int tc_buffer_per_jiffy(unsigned int rate); | |
444 | ||
445 | static struct tcmsg *tc_make_request(const struct netdev *, int type, | |
446 | unsigned int flags, struct ofpbuf *); | |
447 | static int tc_transact(struct ofpbuf *request, struct ofpbuf **replyp); | |
f8500004 | 448 | static int tc_add_del_ingress_qdisc(struct netdev *netdev, bool add); |
c7952afb BP |
449 | static int tc_add_policer(struct netdev *, |
450 | uint32_t kbits_rate, uint32_t kbits_burst); | |
c1c9c9c4 BP |
451 | |
452 | static int tc_parse_qdisc(const struct ofpbuf *, const char **kind, | |
453 | struct nlattr **options); | |
454 | static int tc_parse_class(const struct ofpbuf *, unsigned int *queue_id, | |
455 | struct nlattr **options, | |
456 | struct netdev_queue_stats *); | |
457 | static int tc_query_class(const struct netdev *, | |
458 | unsigned int handle, unsigned int parent, | |
459 | struct ofpbuf **replyp); | |
460 | static int tc_delete_class(const struct netdev *, unsigned int handle); | |
461 | ||
462 | static int tc_del_qdisc(struct netdev *netdev); | |
463 | static int tc_query_qdisc(const struct netdev *netdev); | |
464 | ||
465 | static int tc_calc_cell_log(unsigned int mtu); | |
466 | static void tc_fill_rate(struct tc_ratespec *rate, uint64_t bps, int mtu); | |
467 | static void tc_put_rtab(struct ofpbuf *, uint16_t type, | |
468 | const struct tc_ratespec *rate); | |
469 | static int tc_calc_buffer(unsigned int Bps, int mtu, uint64_t burst_bytes); | |
470 | \f | |
b5d57fc8 BP |
471 | struct netdev_linux { |
472 | struct netdev up; | |
149f577a | 473 | |
86383816 BP |
474 | /* Protects all members below. */ |
475 | struct ovs_mutex mutex; | |
476 | ||
149f577a | 477 | unsigned int cache_valid; |
8b61709d | 478 | |
1670c579 EJ |
479 | bool miimon; /* Link status of last poll. */ |
480 | long long int miimon_interval; /* Miimon Poll rate. Disabled if <= 0. */ | |
481 | struct timer miimon_timer; | |
482 | ||
8722022c BP |
483 | /* The following are figured out "on demand" only. They are only valid |
484 | * when the corresponding VALID_* bit in 'cache_valid' is set. */ | |
8b61709d | 485 | int ifindex; |
74ff3298 | 486 | struct eth_addr etheraddr; |
8b61709d | 487 | int mtu; |
059e5f4f | 488 | unsigned int ifi_flags; |
65c3058c | 489 | long long int carrier_resets; |
80a86fbe BP |
490 | uint32_t kbits_rate; /* Policing data. */ |
491 | uint32_t kbits_burst; | |
bba1e6f3 PS |
492 | int vport_stats_error; /* Cached error code from vport_get_stats(). |
493 | 0 or an errno value. */ | |
90a6637d | 494 | int netdev_mtu_error; /* Cached error code from SIOCGIFMTU or SIOCSIFMTU. */ |
44445cac | 495 | int ether_addr_error; /* Cached error code from set/get etheraddr. */ |
c9f71668 | 496 | int netdev_policing_error; /* Cached error code from set policing. */ |
51f87458 | 497 | int get_features_error; /* Cached error code from ETHTOOL_GSET. */ |
c7b1b0a5 | 498 | int get_ifindex_error; /* Cached error code from SIOCGIFINDEX. */ |
51f87458 | 499 | |
a00ca915 EJ |
500 | enum netdev_features current; /* Cached from ETHTOOL_GSET. */ |
501 | enum netdev_features advertised; /* Cached from ETHTOOL_GSET. */ | |
502 | enum netdev_features supported; /* Cached from ETHTOOL_GSET. */ | |
90a6637d | 503 | |
4f925bd3 | 504 | struct ethtool_drvinfo drvinfo; /* Cached from ETHTOOL_GDRVINFO. */ |
c1c9c9c4 | 505 | struct tc *tc; |
149f577a | 506 | |
d0d08f8a BP |
507 | /* For devices of class netdev_tap_class only. */ |
508 | int tap_fd; | |
8b61709d BP |
509 | }; |
510 | ||
f7791740 PS |
511 | struct netdev_rxq_linux { |
512 | struct netdev_rxq up; | |
796223f5 | 513 | bool is_tap; |
5b7448ed | 514 | int fd; |
149f577a | 515 | }; |
8b61709d | 516 | |
8b61709d BP |
517 | /* This is set pretty low because we probably won't learn anything from the |
518 | * additional log messages. */ | |
519 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); | |
520 | ||
19c8e9c1 JS |
521 | /* Polling miimon status for all ports causes performance degradation when |
522 | * handling a large number of ports. If there are no devices using miimon, then | |
812c272c JR |
523 | * we skip netdev_linux_miimon_run() and netdev_linux_miimon_wait(). |
524 | * | |
525 | * Readers do not depend on this variable synchronizing with the related | |
526 | * changes in the device miimon status, so we can use atomic_count. */ | |
527 | static atomic_count miimon_cnt = ATOMIC_COUNT_INIT(0); | |
19c8e9c1 | 528 | |
1c33f0c3 | 529 | static void netdev_linux_run(const struct netdev_class *); |
6f643e49 | 530 | |
0b0544d7 | 531 | static int netdev_linux_do_ethtool(const char *name, struct ethtool_cmd *, |
8b61709d | 532 | int cmd, const char *cmd_name); |
b5d57fc8 | 533 | static int get_flags(const struct netdev *, unsigned int *flags); |
4b609110 | 534 | static int set_flags(const char *, unsigned int flags); |
4f9f3f21 BP |
535 | static int update_flags(struct netdev_linux *netdev, enum netdev_flags off, |
536 | enum netdev_flags on, enum netdev_flags *old_flagsp) | |
537 | OVS_REQUIRES(netdev->mutex); | |
8b61709d BP |
538 | static int do_get_ifindex(const char *netdev_name); |
539 | static int get_ifindex(const struct netdev *, int *ifindexp); | |
540 | static int do_set_addr(struct netdev *netdev, | |
541 | int ioctl_nr, const char *ioctl_name, | |
542 | struct in_addr addr); | |
74ff3298 JR |
543 | static int get_etheraddr(const char *netdev_name, struct eth_addr *ea); |
544 | static int set_etheraddr(const char *netdev_name, const struct eth_addr); | |
35eef899 | 545 | static int get_stats_via_netlink(const struct netdev *, struct netdev_stats *); |
488d734d | 546 | static int af_packet_sock(void); |
19c8e9c1 | 547 | static bool netdev_linux_miimon_enabled(void); |
1670c579 EJ |
548 | static void netdev_linux_miimon_run(void); |
549 | static void netdev_linux_miimon_wait(void); | |
df1e5a3b | 550 | static int netdev_linux_get_mtu__(struct netdev_linux *netdev, int *mtup); |
8b61709d | 551 | |
15b3596a JG |
552 | static bool |
553 | is_netdev_linux_class(const struct netdev_class *netdev_class) | |
554 | { | |
259e0b1a | 555 | return netdev_class->run == netdev_linux_run; |
15b3596a JG |
556 | } |
557 | ||
796223f5 BP |
558 | static bool |
559 | is_tap_netdev(const struct netdev *netdev) | |
560 | { | |
b5d57fc8 | 561 | return netdev_get_class(netdev) == &netdev_tap_class; |
6c88d577 JP |
562 | } |
563 | ||
8b61709d BP |
564 | static struct netdev_linux * |
565 | netdev_linux_cast(const struct netdev *netdev) | |
566 | { | |
b5d57fc8 | 567 | ovs_assert(is_netdev_linux_class(netdev_get_class(netdev))); |
15b3596a | 568 | |
180c6d0b | 569 | return CONTAINER_OF(netdev, struct netdev_linux, up); |
8b61709d | 570 | } |
796223f5 | 571 | |
f7791740 PS |
572 | static struct netdev_rxq_linux * |
573 | netdev_rxq_linux_cast(const struct netdev_rxq *rx) | |
796223f5 | 574 | { |
9dc63482 | 575 | ovs_assert(is_netdev_linux_class(netdev_get_class(rx->netdev))); |
f7791740 | 576 | return CONTAINER_OF(rx, struct netdev_rxq_linux, up); |
796223f5 | 577 | } |
ff4ed3c9 | 578 | \f |
cee87338 | 579 | static void netdev_linux_update(struct netdev_linux *netdev, |
7e9dcc0f | 580 | const struct rtnetlink_change *) |
86383816 | 581 | OVS_REQUIRES(netdev->mutex); |
cee87338 | 582 | static void netdev_linux_changed(struct netdev_linux *netdev, |
86383816 BP |
583 | unsigned int ifi_flags, unsigned int mask) |
584 | OVS_REQUIRES(netdev->mutex); | |
cee87338 | 585 | |
d6384a3a AW |
586 | /* Returns a NETLINK_ROUTE socket listening for RTNLGRP_LINK, |
587 | * RTNLGRP_IPV4_IFADDR and RTNLGRP_IPV6_IFADDR changes, or NULL | |
cee87338 BP |
588 | * if no such socket could be created. */ |
589 | static struct nl_sock * | |
590 | netdev_linux_notify_sock(void) | |
591 | { | |
592 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
593 | static struct nl_sock *sock; | |
989d7135 PS |
594 | unsigned int mcgroups[] = {RTNLGRP_LINK, RTNLGRP_IPV4_IFADDR, |
595 | RTNLGRP_IPV6_IFADDR, RTNLGRP_IPV6_IFINFO}; | |
cee87338 BP |
596 | |
597 | if (ovsthread_once_start(&once)) { | |
598 | int error; | |
599 | ||
600 | error = nl_sock_create(NETLINK_ROUTE, &sock); | |
601 | if (!error) { | |
d6384a3a AW |
602 | size_t i; |
603 | ||
604 | for (i = 0; i < ARRAY_SIZE(mcgroups); i++) { | |
605 | error = nl_sock_join_mcgroup(sock, mcgroups[i]); | |
606 | if (error) { | |
607 | nl_sock_destroy(sock); | |
608 | sock = NULL; | |
609 | break; | |
610 | } | |
cee87338 BP |
611 | } |
612 | } | |
613 | ovsthread_once_done(&once); | |
614 | } | |
615 | ||
616 | return sock; | |
617 | } | |
618 | ||
19c8e9c1 JS |
619 | static bool |
620 | netdev_linux_miimon_enabled(void) | |
621 | { | |
812c272c | 622 | return atomic_count_get(&miimon_cnt) > 0; |
19c8e9c1 JS |
623 | } |
624 | ||
8b61709d | 625 | static void |
1c33f0c3 | 626 | netdev_linux_run(const struct netdev_class *netdev_class OVS_UNUSED) |
8b61709d | 627 | { |
cee87338 BP |
628 | struct nl_sock *sock; |
629 | int error; | |
630 | ||
19c8e9c1 JS |
631 | if (netdev_linux_miimon_enabled()) { |
632 | netdev_linux_miimon_run(); | |
633 | } | |
cee87338 BP |
634 | |
635 | sock = netdev_linux_notify_sock(); | |
636 | if (!sock) { | |
637 | return; | |
638 | } | |
639 | ||
640 | do { | |
641 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5); | |
642 | uint64_t buf_stub[4096 / 8]; | |
643 | struct ofpbuf buf; | |
644 | ||
645 | ofpbuf_use_stub(&buf, buf_stub, sizeof buf_stub); | |
646 | error = nl_sock_recv(sock, &buf, false); | |
647 | if (!error) { | |
7e9dcc0f | 648 | struct rtnetlink_change change; |
cee87338 | 649 | |
7e9dcc0f | 650 | if (rtnetlink_parse(&buf, &change)) { |
989d7135 PS |
651 | struct netdev *netdev_ = NULL; |
652 | char dev_name[IFNAMSIZ]; | |
653 | ||
654 | if (!change.ifname) { | |
655 | change.ifname = if_indextoname(change.if_index, dev_name); | |
656 | } | |
657 | ||
658 | if (change.ifname) { | |
659 | netdev_ = netdev_from_name(change.ifname); | |
660 | } | |
cee87338 BP |
661 | if (netdev_ && is_netdev_linux_class(netdev_->netdev_class)) { |
662 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
86383816 BP |
663 | |
664 | ovs_mutex_lock(&netdev->mutex); | |
cee87338 | 665 | netdev_linux_update(netdev, &change); |
86383816 | 666 | ovs_mutex_unlock(&netdev->mutex); |
cee87338 | 667 | } |
38e0065b | 668 | netdev_close(netdev_); |
cee87338 BP |
669 | } |
670 | } else if (error == ENOBUFS) { | |
671 | struct shash device_shash; | |
672 | struct shash_node *node; | |
673 | ||
674 | nl_sock_drain(sock); | |
675 | ||
676 | shash_init(&device_shash); | |
677 | netdev_get_devices(&netdev_linux_class, &device_shash); | |
678 | SHASH_FOR_EACH (node, &device_shash) { | |
679 | struct netdev *netdev_ = node->data; | |
680 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
681 | unsigned int flags; | |
682 | ||
86383816 | 683 | ovs_mutex_lock(&netdev->mutex); |
cee87338 BP |
684 | get_flags(netdev_, &flags); |
685 | netdev_linux_changed(netdev, flags, 0); | |
86383816 BP |
686 | ovs_mutex_unlock(&netdev->mutex); |
687 | ||
cee87338 BP |
688 | netdev_close(netdev_); |
689 | } | |
690 | shash_destroy(&device_shash); | |
691 | } else if (error != EAGAIN) { | |
692 | VLOG_WARN_RL(&rl, "error reading or parsing netlink (%s)", | |
693 | ovs_strerror(error)); | |
694 | } | |
695 | ofpbuf_uninit(&buf); | |
696 | } while (!error); | |
8b61709d BP |
697 | } |
698 | ||
699 | static void | |
1c33f0c3 | 700 | netdev_linux_wait(const struct netdev_class *netdev_class OVS_UNUSED) |
8b61709d | 701 | { |
cee87338 BP |
702 | struct nl_sock *sock; |
703 | ||
19c8e9c1 JS |
704 | if (netdev_linux_miimon_enabled()) { |
705 | netdev_linux_miimon_wait(); | |
706 | } | |
cee87338 BP |
707 | sock = netdev_linux_notify_sock(); |
708 | if (sock) { | |
709 | nl_sock_wait(sock, POLLIN); | |
710 | } | |
8b61709d BP |
711 | } |
712 | ||
ac4d3bcb | 713 | static void |
b5d57fc8 BP |
714 | netdev_linux_changed(struct netdev_linux *dev, |
715 | unsigned int ifi_flags, unsigned int mask) | |
86383816 | 716 | OVS_REQUIRES(dev->mutex) |
ac4d3bcb | 717 | { |
3e912ffc | 718 | netdev_change_seq_changed(&dev->up); |
8aa77183 BP |
719 | |
720 | if ((dev->ifi_flags ^ ifi_flags) & IFF_RUNNING) { | |
721 | dev->carrier_resets++; | |
722 | } | |
723 | dev->ifi_flags = ifi_flags; | |
724 | ||
4f925bd3 | 725 | dev->cache_valid &= mask; |
6b6e1329 | 726 | if (!(mask & VALID_IN)) { |
a8704b50 PS |
727 | netdev_get_addrs_list_flush(); |
728 | } | |
4f925bd3 PS |
729 | } |
730 | ||
731 | static void | |
b5d57fc8 | 732 | netdev_linux_update(struct netdev_linux *dev, |
7e9dcc0f | 733 | const struct rtnetlink_change *change) |
86383816 | 734 | OVS_REQUIRES(dev->mutex) |
4f925bd3 | 735 | { |
d6384a3a AW |
736 | if (rtnetlink_type_is_rtnlgrp_link(change->nlmsg_type)){ |
737 | if (change->nlmsg_type == RTM_NEWLINK) { | |
6b6e1329 | 738 | /* Keep drv-info, and ip addresses. */ |
d6384a3a | 739 | netdev_linux_changed(dev, change->ifi_flags, |
6b6e1329 | 740 | VALID_DRVINFO | VALID_IN); |
d6384a3a AW |
741 | |
742 | /* Update netdev from rtnl-change msg. */ | |
743 | if (change->mtu) { | |
744 | dev->mtu = change->mtu; | |
745 | dev->cache_valid |= VALID_MTU; | |
746 | dev->netdev_mtu_error = 0; | |
747 | } | |
90a6637d | 748 | |
74ff3298 JR |
749 | if (!eth_addr_is_zero(change->mac)) { |
750 | dev->etheraddr = change->mac; | |
d6384a3a AW |
751 | dev->cache_valid |= VALID_ETHERADDR; |
752 | dev->ether_addr_error = 0; | |
753 | } | |
44445cac | 754 | |
d6384a3a AW |
755 | dev->ifindex = change->if_index; |
756 | dev->cache_valid |= VALID_IFINDEX; | |
757 | dev->get_ifindex_error = 0; | |
758 | } else { | |
759 | netdev_linux_changed(dev, change->ifi_flags, 0); | |
760 | } | |
761 | } else if (rtnetlink_type_is_rtnlgrp_addr(change->nlmsg_type)) { | |
762 | /* Invalidates in4, in6. */ | |
6b6e1329 | 763 | netdev_linux_changed(dev, dev->ifi_flags, ~VALID_IN); |
4f925bd3 | 764 | } else { |
d6384a3a | 765 | OVS_NOT_REACHED(); |
4f925bd3 | 766 | } |
ac4d3bcb EJ |
767 | } |
768 | ||
9dc63482 BP |
769 | static struct netdev * |
770 | netdev_linux_alloc(void) | |
771 | { | |
772 | struct netdev_linux *netdev = xzalloc(sizeof *netdev); | |
773 | return &netdev->up; | |
774 | } | |
775 | ||
48c6733c WT |
776 | static int |
777 | netdev_linux_common_construct(struct netdev *netdev_) | |
9dc63482 | 778 | { |
48c6733c WT |
779 | /* Prevent any attempt to create (or open) a network device named "default" |
780 | * or "all". These device names are effectively reserved on Linux because | |
781 | * /proc/sys/net/ipv4/conf/ always contains directories by these names. By | |
782 | * itself this wouldn't call for any special treatment, but in practice if | |
783 | * a program tries to create devices with these names, it causes the kernel | |
784 | * to fire a "new device" notification event even though creation failed, | |
785 | * and in turn that causes OVS to wake up and try to create them again, | |
786 | * which ends up as a 100% CPU loop. */ | |
787 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
788 | const char *name = netdev_->name; | |
789 | if (!strcmp(name, "default") || !strcmp(name, "all")) { | |
790 | static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1); | |
791 | VLOG_WARN_RL(&rl, "%s: Linux forbids network device with this name", | |
792 | name); | |
793 | return EINVAL; | |
794 | } | |
795 | ||
834d6caf | 796 | ovs_mutex_init(&netdev->mutex); |
48c6733c | 797 | return 0; |
9dc63482 BP |
798 | } |
799 | ||
1f6e0fbd BP |
800 | /* Creates system and internal devices. */ |
801 | static int | |
9dc63482 | 802 | netdev_linux_construct(struct netdev *netdev_) |
1f6e0fbd | 803 | { |
9dc63482 | 804 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
48c6733c WT |
805 | int error = netdev_linux_common_construct(netdev_); |
806 | if (error) { | |
807 | return error; | |
808 | } | |
1f6e0fbd | 809 | |
b5d57fc8 BP |
810 | error = get_flags(&netdev->up, &netdev->ifi_flags); |
811 | if (error == ENODEV) { | |
9dc63482 | 812 | if (netdev->up.netdev_class != &netdev_internal_class) { |
b5d57fc8 | 813 | /* The device does not exist, so don't allow it to be opened. */ |
b5d57fc8 BP |
814 | return ENODEV; |
815 | } else { | |
816 | /* "Internal" netdevs have to be created as netdev objects before | |
817 | * they exist in the kernel, because creating them in the kernel | |
818 | * happens by passing a netdev object to dpif_port_add(). | |
819 | * Therefore, ignore the error. */ | |
820 | } | |
821 | } | |
46415c90 | 822 | |
a740f0de JG |
823 | return 0; |
824 | } | |
825 | ||
5b7448ed JG |
826 | /* For most types of netdevs we open the device for each call of |
827 | * netdev_open(). However, this is not the case with tap devices, | |
828 | * since it is only possible to open the device once. In this | |
829 | * situation we share a single file descriptor, and consequently | |
830 | * buffers, across all readers. Therefore once data is read it will | |
831 | * be unavailable to other reads for tap devices. */ | |
a740f0de | 832 | static int |
9dc63482 | 833 | netdev_linux_construct_tap(struct netdev *netdev_) |
a740f0de | 834 | { |
9dc63482 | 835 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
a740f0de | 836 | static const char tap_dev[] = "/dev/net/tun"; |
9dc63482 | 837 | const char *name = netdev_->name; |
a740f0de | 838 | struct ifreq ifr; |
a740f0de | 839 | |
48c6733c WT |
840 | int error = netdev_linux_common_construct(netdev_); |
841 | if (error) { | |
842 | return error; | |
843 | } | |
1f6e0fbd | 844 | |
6c88d577 | 845 | /* Open tap device. */ |
d0d08f8a BP |
846 | netdev->tap_fd = open(tap_dev, O_RDWR); |
847 | if (netdev->tap_fd < 0) { | |
6c88d577 | 848 | error = errno; |
10a89ef0 | 849 | VLOG_WARN("opening \"%s\" failed: %s", tap_dev, ovs_strerror(error)); |
cee87338 | 850 | return error; |
6c88d577 JP |
851 | } |
852 | ||
853 | /* Create tap device. */ | |
854 | ifr.ifr_flags = IFF_TAP | IFF_NO_PI; | |
71d7c22f | 855 | ovs_strzcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); |
d0d08f8a | 856 | if (ioctl(netdev->tap_fd, TUNSETIFF, &ifr) == -1) { |
6c88d577 | 857 | VLOG_WARN("%s: creating tap device failed: %s", name, |
10a89ef0 | 858 | ovs_strerror(errno)); |
6c88d577 | 859 | error = errno; |
f61d8d29 | 860 | goto error_close; |
6c88d577 JP |
861 | } |
862 | ||
863 | /* Make non-blocking. */ | |
d0d08f8a | 864 | error = set_nonblocking(netdev->tap_fd); |
a740f0de | 865 | if (error) { |
f61d8d29 | 866 | goto error_close; |
a740f0de JG |
867 | } |
868 | ||
869 | return 0; | |
870 | ||
f61d8d29 | 871 | error_close: |
d0d08f8a | 872 | close(netdev->tap_fd); |
a740f0de JG |
873 | return error; |
874 | } | |
875 | ||
6c88d577 | 876 | static void |
9dc63482 | 877 | netdev_linux_destruct(struct netdev *netdev_) |
6c88d577 | 878 | { |
b5d57fc8 | 879 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
6c88d577 | 880 | |
b5d57fc8 BP |
881 | if (netdev->tc && netdev->tc->ops->tc_destroy) { |
882 | netdev->tc->ops->tc_destroy(netdev->tc); | |
c1c9c9c4 BP |
883 | } |
884 | ||
d0d08f8a BP |
885 | if (netdev_get_class(netdev_) == &netdev_tap_class |
886 | && netdev->tap_fd >= 0) | |
887 | { | |
888 | close(netdev->tap_fd); | |
6c88d577 | 889 | } |
86383816 | 890 | |
19c8e9c1 | 891 | if (netdev->miimon_interval > 0) { |
812c272c | 892 | atomic_count_dec(&miimon_cnt); |
19c8e9c1 JS |
893 | } |
894 | ||
86383816 | 895 | ovs_mutex_destroy(&netdev->mutex); |
6c88d577 JP |
896 | } |
897 | ||
9dc63482 BP |
898 | static void |
899 | netdev_linux_dealloc(struct netdev *netdev_) | |
900 | { | |
901 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
902 | free(netdev); | |
903 | } | |
904 | ||
f7791740 PS |
905 | static struct netdev_rxq * |
906 | netdev_linux_rxq_alloc(void) | |
9dc63482 | 907 | { |
f7791740 | 908 | struct netdev_rxq_linux *rx = xzalloc(sizeof *rx); |
9dc63482 BP |
909 | return &rx->up; |
910 | } | |
911 | ||
7b6b0ef4 | 912 | static int |
f7791740 | 913 | netdev_linux_rxq_construct(struct netdev_rxq *rxq_) |
7b6b0ef4 | 914 | { |
f7791740 | 915 | struct netdev_rxq_linux *rx = netdev_rxq_linux_cast(rxq_); |
9dc63482 | 916 | struct netdev *netdev_ = rx->up.netdev; |
7b6b0ef4 | 917 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
7b6b0ef4 | 918 | int error; |
7b6b0ef4 | 919 | |
86383816 | 920 | ovs_mutex_lock(&netdev->mutex); |
9dc63482 BP |
921 | rx->is_tap = is_tap_netdev(netdev_); |
922 | if (rx->is_tap) { | |
923 | rx->fd = netdev->tap_fd; | |
796223f5 BP |
924 | } else { |
925 | struct sockaddr_ll sll; | |
b73c8518 | 926 | int ifindex, val; |
32383c3b | 927 | /* Result of tcpdump -dd inbound */ |
259e0b1a | 928 | static const struct sock_filter filt[] = { |
32383c3b MM |
929 | { 0x28, 0, 0, 0xfffff004 }, /* ldh [0] */ |
930 | { 0x15, 0, 1, 0x00000004 }, /* jeq #4 jt 2 jf 3 */ | |
931 | { 0x6, 0, 0, 0x00000000 }, /* ret #0 */ | |
932 | { 0x6, 0, 0, 0x0000ffff } /* ret #65535 */ | |
933 | }; | |
259e0b1a BP |
934 | static const struct sock_fprog fprog = { |
935 | ARRAY_SIZE(filt), (struct sock_filter *) filt | |
936 | }; | |
7b6b0ef4 | 937 | |
796223f5 | 938 | /* Create file descriptor. */ |
9dc63482 BP |
939 | rx->fd = socket(PF_PACKET, SOCK_RAW, 0); |
940 | if (rx->fd < 0) { | |
796223f5 | 941 | error = errno; |
10a89ef0 | 942 | VLOG_ERR("failed to create raw socket (%s)", ovs_strerror(error)); |
796223f5 BP |
943 | goto error; |
944 | } | |
33d82a56 | 945 | |
b73c8518 SH |
946 | val = 1; |
947 | if (setsockopt(rx->fd, SOL_PACKET, PACKET_AUXDATA, &val, sizeof val)) { | |
948 | error = errno; | |
949 | VLOG_ERR("%s: failed to mark socket for auxdata (%s)", | |
950 | netdev_get_name(netdev_), ovs_strerror(error)); | |
951 | goto error; | |
952 | } | |
953 | ||
796223f5 | 954 | /* Set non-blocking mode. */ |
9dc63482 | 955 | error = set_nonblocking(rx->fd); |
796223f5 BP |
956 | if (error) { |
957 | goto error; | |
958 | } | |
7b6b0ef4 | 959 | |
796223f5 | 960 | /* Get ethernet device index. */ |
180c6d0b | 961 | error = get_ifindex(&netdev->up, &ifindex); |
796223f5 BP |
962 | if (error) { |
963 | goto error; | |
964 | } | |
7b6b0ef4 | 965 | |
796223f5 BP |
966 | /* Bind to specific ethernet device. */ |
967 | memset(&sll, 0, sizeof sll); | |
968 | sll.sll_family = AF_PACKET; | |
969 | sll.sll_ifindex = ifindex; | |
b73c8518 | 970 | sll.sll_protocol = htons(ETH_P_ALL); |
9dc63482 | 971 | if (bind(rx->fd, (struct sockaddr *) &sll, sizeof sll) < 0) { |
796223f5 BP |
972 | error = errno; |
973 | VLOG_ERR("%s: failed to bind raw socket (%s)", | |
10a89ef0 | 974 | netdev_get_name(netdev_), ovs_strerror(error)); |
796223f5 BP |
975 | goto error; |
976 | } | |
32383c3b MM |
977 | |
978 | /* Filter for only inbound packets. */ | |
9dc63482 | 979 | error = setsockopt(rx->fd, SOL_SOCKET, SO_ATTACH_FILTER, &fprog, |
32383c3b MM |
980 | sizeof fprog); |
981 | if (error) { | |
982 | error = errno; | |
259e0b1a | 983 | VLOG_ERR("%s: failed to attach filter (%s)", |
10a89ef0 | 984 | netdev_get_name(netdev_), ovs_strerror(error)); |
32383c3b MM |
985 | goto error; |
986 | } | |
7b6b0ef4 | 987 | } |
86383816 | 988 | ovs_mutex_unlock(&netdev->mutex); |
7b6b0ef4 | 989 | |
7b6b0ef4 BP |
990 | return 0; |
991 | ||
992 | error: | |
9dc63482 BP |
993 | if (rx->fd >= 0) { |
994 | close(rx->fd); | |
7b6b0ef4 | 995 | } |
86383816 | 996 | ovs_mutex_unlock(&netdev->mutex); |
7b6b0ef4 BP |
997 | return error; |
998 | } | |
999 | ||
796223f5 | 1000 | static void |
f7791740 | 1001 | netdev_linux_rxq_destruct(struct netdev_rxq *rxq_) |
8b61709d | 1002 | { |
f7791740 | 1003 | struct netdev_rxq_linux *rx = netdev_rxq_linux_cast(rxq_); |
8b61709d | 1004 | |
796223f5 BP |
1005 | if (!rx->is_tap) { |
1006 | close(rx->fd); | |
8b61709d | 1007 | } |
9dc63482 BP |
1008 | } |
1009 | ||
1010 | static void | |
f7791740 | 1011 | netdev_linux_rxq_dealloc(struct netdev_rxq *rxq_) |
9dc63482 | 1012 | { |
f7791740 | 1013 | struct netdev_rxq_linux *rx = netdev_rxq_linux_cast(rxq_); |
9dc63482 | 1014 | |
796223f5 BP |
1015 | free(rx); |
1016 | } | |
8b61709d | 1017 | |
b73c8518 | 1018 | static ovs_be16 |
1ebdc7eb | 1019 | auxdata_to_vlan_tpid(const struct tpacket_auxdata *aux, bool double_tagged) |
b73c8518 SH |
1020 | { |
1021 | if (aux->tp_status & TP_STATUS_VLAN_TPID_VALID) { | |
1022 | return htons(aux->tp_vlan_tpid); | |
1ebdc7eb EG |
1023 | } else if (double_tagged) { |
1024 | return htons(ETH_TYPE_VLAN_8021AD); | |
b73c8518 | 1025 | } else { |
1ebdc7eb | 1026 | return htons(ETH_TYPE_VLAN_8021Q); |
b73c8518 SH |
1027 | } |
1028 | } | |
1029 | ||
1030 | static bool | |
1031 | auxdata_has_vlan_tci(const struct tpacket_auxdata *aux) | |
1032 | { | |
1033 | return aux->tp_vlan_tci || aux->tp_status & TP_STATUS_VLAN_VALID; | |
1034 | } | |
1035 | ||
796223f5 | 1036 | static int |
cf62fa4c | 1037 | netdev_linux_rxq_recv_sock(int fd, struct dp_packet *buffer) |
796223f5 | 1038 | { |
b73c8518 | 1039 | size_t size; |
796223f5 | 1040 | ssize_t retval; |
b73c8518 SH |
1041 | struct iovec iov; |
1042 | struct cmsghdr *cmsg; | |
1043 | union { | |
1044 | struct cmsghdr cmsg; | |
1045 | char buffer[CMSG_SPACE(sizeof(struct tpacket_auxdata))]; | |
1046 | } cmsg_buffer; | |
1047 | struct msghdr msgh; | |
1048 | ||
1049 | /* Reserve headroom for a single VLAN tag */ | |
cf62fa4c PS |
1050 | dp_packet_reserve(buffer, VLAN_HEADER_LEN); |
1051 | size = dp_packet_tailroom(buffer); | |
b73c8518 | 1052 | |
cf62fa4c | 1053 | iov.iov_base = dp_packet_data(buffer); |
b73c8518 SH |
1054 | iov.iov_len = size; |
1055 | msgh.msg_name = NULL; | |
1056 | msgh.msg_namelen = 0; | |
1057 | msgh.msg_iov = &iov; | |
1058 | msgh.msg_iovlen = 1; | |
1059 | msgh.msg_control = &cmsg_buffer; | |
1060 | msgh.msg_controllen = sizeof cmsg_buffer; | |
1061 | msgh.msg_flags = 0; | |
8e8cddf7 | 1062 | |
796223f5 | 1063 | do { |
b73c8518 | 1064 | retval = recvmsg(fd, &msgh, MSG_TRUNC); |
796223f5 BP |
1065 | } while (retval < 0 && errno == EINTR); |
1066 | ||
bfd3367b | 1067 | if (retval < 0) { |
b73c8518 SH |
1068 | return errno; |
1069 | } else if (retval > size) { | |
1070 | return EMSGSIZE; | |
1071 | } | |
1072 | ||
cf62fa4c | 1073 | dp_packet_set_size(buffer, dp_packet_size(buffer) + retval); |
b73c8518 SH |
1074 | |
1075 | for (cmsg = CMSG_FIRSTHDR(&msgh); cmsg; cmsg = CMSG_NXTHDR(&msgh, cmsg)) { | |
1076 | const struct tpacket_auxdata *aux; | |
1077 | ||
1078 | if (cmsg->cmsg_level != SOL_PACKET | |
1079 | || cmsg->cmsg_type != PACKET_AUXDATA | |
1080 | || cmsg->cmsg_len < CMSG_LEN(sizeof(struct tpacket_auxdata))) { | |
1081 | continue; | |
8b61709d | 1082 | } |
b73c8518 SH |
1083 | |
1084 | aux = ALIGNED_CAST(struct tpacket_auxdata *, CMSG_DATA(cmsg)); | |
1085 | if (auxdata_has_vlan_tci(aux)) { | |
1ebdc7eb EG |
1086 | struct eth_header *eth; |
1087 | bool double_tagged; | |
1088 | ||
b73c8518 SH |
1089 | if (retval < ETH_HEADER_LEN) { |
1090 | return EINVAL; | |
1091 | } | |
1092 | ||
1ebdc7eb EG |
1093 | eth = dp_packet_data(buffer); |
1094 | double_tagged = eth->eth_type == htons(ETH_TYPE_VLAN_8021Q); | |
1095 | ||
1096 | eth_push_vlan(buffer, auxdata_to_vlan_tpid(aux, double_tagged), | |
b73c8518 SH |
1097 | htons(aux->tp_vlan_tci)); |
1098 | break; | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | static int | |
cf62fa4c | 1106 | netdev_linux_rxq_recv_tap(int fd, struct dp_packet *buffer) |
b73c8518 SH |
1107 | { |
1108 | ssize_t retval; | |
cf62fa4c | 1109 | size_t size = dp_packet_tailroom(buffer); |
b73c8518 SH |
1110 | |
1111 | do { | |
cf62fa4c | 1112 | retval = read(fd, dp_packet_data(buffer), size); |
b73c8518 SH |
1113 | } while (retval < 0 && errno == EINTR); |
1114 | ||
1115 | if (retval < 0) { | |
bfd3367b | 1116 | return errno; |
8b61709d | 1117 | } |
b73c8518 | 1118 | |
cf62fa4c | 1119 | dp_packet_set_size(buffer, dp_packet_size(buffer) + retval); |
b73c8518 SH |
1120 | return 0; |
1121 | } | |
1122 | ||
1123 | static int | |
64839cf4 | 1124 | netdev_linux_rxq_recv(struct netdev_rxq *rxq_, struct dp_packet_batch *batch) |
b73c8518 | 1125 | { |
f7791740 | 1126 | struct netdev_rxq_linux *rx = netdev_rxq_linux_cast(rxq_); |
df1e5a3b | 1127 | struct netdev *netdev = rx->up.netdev; |
cf62fa4c | 1128 | struct dp_packet *buffer; |
df1e5a3b PS |
1129 | ssize_t retval; |
1130 | int mtu; | |
1131 | ||
1132 | if (netdev_linux_get_mtu__(netdev_linux_cast(netdev), &mtu)) { | |
1133 | mtu = ETH_PAYLOAD_MAX; | |
1134 | } | |
1135 | ||
2482b0b0 | 1136 | /* Assume Ethernet port. No need to set packet_type. */ |
cf62fa4c | 1137 | buffer = dp_packet_new_with_headroom(VLAN_ETH_HEADER_LEN + mtu, |
91088554 | 1138 | DP_NETDEV_HEADROOM); |
b73c8518 | 1139 | retval = (rx->is_tap |
f7791740 PS |
1140 | ? netdev_linux_rxq_recv_tap(rx->fd, buffer) |
1141 | : netdev_linux_rxq_recv_sock(rx->fd, buffer)); | |
df1e5a3b PS |
1142 | |
1143 | if (retval) { | |
1144 | if (retval != EAGAIN && retval != EMSGSIZE) { | |
1145 | VLOG_WARN_RL(&rl, "error receiving Ethernet packet on %s: %s", | |
7c6401ca | 1146 | netdev_rxq_get_name(rxq_), ovs_strerror(errno)); |
df1e5a3b | 1147 | } |
cf62fa4c | 1148 | dp_packet_delete(buffer); |
df1e5a3b | 1149 | } else { |
72c84bc2 | 1150 | dp_packet_batch_init_packet(batch, buffer); |
b73c8518 SH |
1151 | } |
1152 | ||
1153 | return retval; | |
8b61709d BP |
1154 | } |
1155 | ||
8b61709d | 1156 | static void |
f7791740 | 1157 | netdev_linux_rxq_wait(struct netdev_rxq *rxq_) |
8b61709d | 1158 | { |
f7791740 | 1159 | struct netdev_rxq_linux *rx = netdev_rxq_linux_cast(rxq_); |
796223f5 | 1160 | poll_fd_wait(rx->fd, POLLIN); |
8b61709d BP |
1161 | } |
1162 | ||
8b61709d | 1163 | static int |
f7791740 | 1164 | netdev_linux_rxq_drain(struct netdev_rxq *rxq_) |
8b61709d | 1165 | { |
f7791740 | 1166 | struct netdev_rxq_linux *rx = netdev_rxq_linux_cast(rxq_); |
796223f5 | 1167 | if (rx->is_tap) { |
8b61709d | 1168 | struct ifreq ifr; |
f7791740 | 1169 | int error = af_inet_ifreq_ioctl(netdev_rxq_get_name(rxq_), &ifr, |
259e0b1a | 1170 | SIOCGIFTXQLEN, "SIOCGIFTXQLEN"); |
8b61709d BP |
1171 | if (error) { |
1172 | return error; | |
1173 | } | |
796223f5 | 1174 | drain_fd(rx->fd, ifr.ifr_qlen); |
8b61709d BP |
1175 | return 0; |
1176 | } else { | |
796223f5 | 1177 | return drain_rcvbuf(rx->fd); |
8b61709d BP |
1178 | } |
1179 | } | |
1180 | ||
1181 | /* Sends 'buffer' on 'netdev'. Returns 0 if successful, otherwise a positive | |
1182 | * errno value. Returns EAGAIN without blocking if the packet cannot be queued | |
1183 | * immediately. Returns EMSGSIZE if a partial packet was transmitted or if | |
1184 | * the packet is too big or too small to transmit on the device. | |
1185 | * | |
1186 | * The caller retains ownership of 'buffer' in all cases. | |
1187 | * | |
1188 | * The kernel maintains a packet transmission queue, so the caller is not | |
1189 | * expected to do additional queuing of packets. */ | |
1190 | static int | |
f00fa8cb | 1191 | netdev_linux_send(struct netdev *netdev_, int qid OVS_UNUSED, |
324c8374 IM |
1192 | struct dp_packet_batch *batch, bool may_steal, |
1193 | bool concurrent_txq OVS_UNUSED) | |
8b61709d | 1194 | { |
f4fd623c DDP |
1195 | int i; |
1196 | int error = 0; | |
40d26f04 | 1197 | |
f4fd623c | 1198 | /* 'i' is incremented only if there's no error */ |
64839cf4 WT |
1199 | for (i = 0; i < batch->count;) { |
1200 | const void *data = dp_packet_data(batch->packets[i]); | |
1201 | size_t size = dp_packet_size(batch->packets[i]); | |
f23347ea | 1202 | ssize_t retval; |
8b61709d | 1203 | |
aaca4fe0 | 1204 | /* Truncate the packet if it is configured. */ |
64839cf4 | 1205 | size -= dp_packet_get_cutlen(batch->packets[i]); |
aaca4fe0 | 1206 | |
796223f5 | 1207 | if (!is_tap_netdev(netdev_)) { |
f23347ea BP |
1208 | /* Use our AF_PACKET socket to send to this device. */ |
1209 | struct sockaddr_ll sll; | |
1210 | struct msghdr msg; | |
1211 | struct iovec iov; | |
1212 | int ifindex; | |
488d734d BP |
1213 | int sock; |
1214 | ||
1215 | sock = af_packet_sock(); | |
1216 | if (sock < 0) { | |
c4c7a3d7 | 1217 | return -sock; |
488d734d | 1218 | } |
f23347ea | 1219 | |
86383816 BP |
1220 | ifindex = netdev_get_ifindex(netdev_); |
1221 | if (ifindex < 0) { | |
1222 | return -ifindex; | |
f23347ea | 1223 | } |
8b61709d | 1224 | |
f23347ea BP |
1225 | /* We don't bother setting most fields in sockaddr_ll because the |
1226 | * kernel ignores them for SOCK_RAW. */ | |
1227 | memset(&sll, 0, sizeof sll); | |
1228 | sll.sll_family = AF_PACKET; | |
1229 | sll.sll_ifindex = ifindex; | |
76c308b5 | 1230 | |
ebc56baa | 1231 | iov.iov_base = CONST_CAST(void *, data); |
f23347ea | 1232 | iov.iov_len = size; |
76c308b5 | 1233 | |
f23347ea BP |
1234 | msg.msg_name = &sll; |
1235 | msg.msg_namelen = sizeof sll; | |
1236 | msg.msg_iov = &iov; | |
1237 | msg.msg_iovlen = 1; | |
1238 | msg.msg_control = NULL; | |
1239 | msg.msg_controllen = 0; | |
1240 | msg.msg_flags = 0; | |
1241 | ||
488d734d | 1242 | retval = sendmsg(sock, &msg, 0); |
f23347ea | 1243 | } else { |
796223f5 BP |
1244 | /* Use the tap fd to send to this device. This is essential for |
1245 | * tap devices, because packets sent to a tap device with an | |
1246 | * AF_PACKET socket will loop back to be *received* again on the | |
32383c3b MM |
1247 | * tap device. This doesn't occur on other interface types |
1248 | * because we attach a socket filter to the rx socket. */ | |
b5d57fc8 | 1249 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
796223f5 | 1250 | |
d0d08f8a | 1251 | retval = write(netdev->tap_fd, data, size); |
f23347ea | 1252 | } |
76c308b5 | 1253 | |
8b61709d | 1254 | if (retval < 0) { |
29736cc0 DDP |
1255 | if (errno == EINTR) { |
1256 | /* The send was interrupted by a signal. Retry the packet by | |
1257 | * continuing without incrementing 'i'.*/ | |
8b61709d | 1258 | continue; |
29736cc0 DDP |
1259 | } else if (errno == EIO && is_tap_netdev(netdev_)) { |
1260 | /* The Linux tap driver returns EIO if the device is not up. | |
1261 | * From the OVS side this is not an error, so ignore it. */ | |
1262 | } else { | |
1263 | /* The Linux AF_PACKET implementation never blocks waiting for | |
1264 | * room for packets, instead returning ENOBUFS. Translate this | |
1265 | * into EAGAIN for the caller. */ | |
1266 | error = errno == ENOBUFS ? EAGAIN : errno; | |
1267 | break; | |
8b61709d | 1268 | } |
8b61709d | 1269 | } else if (retval != size) { |
f4fd623c DDP |
1270 | VLOG_WARN_RL(&rl, "sent partial Ethernet packet (%"PRIuSIZE" bytes" |
1271 | " of %"PRIuSIZE") on %s", retval, size, | |
1272 | netdev_get_name(netdev_)); | |
1273 | error = EMSGSIZE; | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | /* Process the next packet in the batch */ | |
1278 | i++; | |
1279 | } | |
1280 | ||
64839cf4 | 1281 | dp_packet_delete_batch(batch, may_steal); |
f4fd623c DDP |
1282 | |
1283 | if (error && error != EAGAIN) { | |
1284 | VLOG_WARN_RL(&rl, "error sending Ethernet packet on %s: %s", | |
1285 | netdev_get_name(netdev_), ovs_strerror(error)); | |
1286 | } | |
1287 | ||
1288 | return error; | |
1289 | ||
8b61709d BP |
1290 | } |
1291 | ||
1292 | /* Registers with the poll loop to wake up from the next call to poll_block() | |
1293 | * when the packet transmission queue has sufficient room to transmit a packet | |
1294 | * with netdev_send(). | |
1295 | * | |
1296 | * The kernel maintains a packet transmission queue, so the client is not | |
1297 | * expected to do additional queuing of packets. Thus, this function is | |
1298 | * unlikely to ever be used. It is included for completeness. */ | |
1299 | static void | |
f00fa8cb | 1300 | netdev_linux_send_wait(struct netdev *netdev, int qid OVS_UNUSED) |
8b61709d | 1301 | { |
796223f5 | 1302 | if (is_tap_netdev(netdev)) { |
8b61709d BP |
1303 | /* TAP device always accepts packets.*/ |
1304 | poll_immediate_wake(); | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* Attempts to set 'netdev''s MAC address to 'mac'. Returns 0 if successful, | |
1309 | * otherwise a positive errno value. */ | |
1310 | static int | |
74ff3298 | 1311 | netdev_linux_set_etheraddr(struct netdev *netdev_, const struct eth_addr mac) |
8b61709d | 1312 | { |
b5d57fc8 | 1313 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
4f9f3f21 | 1314 | enum netdev_flags old_flags = 0; |
eb395f2e BP |
1315 | int error; |
1316 | ||
86383816 BP |
1317 | ovs_mutex_lock(&netdev->mutex); |
1318 | ||
b5d57fc8 | 1319 | if (netdev->cache_valid & VALID_ETHERADDR) { |
86383816 BP |
1320 | error = netdev->ether_addr_error; |
1321 | if (error || eth_addr_equals(netdev->etheraddr, mac)) { | |
1322 | goto exit; | |
44445cac | 1323 | } |
b5d57fc8 | 1324 | netdev->cache_valid &= ~VALID_ETHERADDR; |
44445cac PS |
1325 | } |
1326 | ||
7eb1bd81 | 1327 | /* Tap devices must be brought down before setting the address. */ |
796223f5 | 1328 | if (is_tap_netdev(netdev_)) { |
4f9f3f21 | 1329 | update_flags(netdev, NETDEV_UP, 0, &old_flags); |
7eb1bd81 | 1330 | } |
44445cac PS |
1331 | error = set_etheraddr(netdev_get_name(netdev_), mac); |
1332 | if (!error || error == ENODEV) { | |
b5d57fc8 BP |
1333 | netdev->ether_addr_error = error; |
1334 | netdev->cache_valid |= VALID_ETHERADDR; | |
eb395f2e | 1335 | if (!error) { |
74ff3298 | 1336 | netdev->etheraddr = mac; |
eb395f2e | 1337 | } |
8b61709d | 1338 | } |
44445cac | 1339 | |
4f9f3f21 BP |
1340 | if (is_tap_netdev(netdev_) && old_flags & NETDEV_UP) { |
1341 | update_flags(netdev, 0, NETDEV_UP, &old_flags); | |
1342 | } | |
7eb1bd81 | 1343 | |
86383816 BP |
1344 | exit: |
1345 | ovs_mutex_unlock(&netdev->mutex); | |
8b61709d BP |
1346 | return error; |
1347 | } | |
1348 | ||
44445cac | 1349 | /* Copies 'netdev''s MAC address to 'mac' which is passed as param. */ |
8b61709d | 1350 | static int |
74ff3298 | 1351 | netdev_linux_get_etheraddr(const struct netdev *netdev_, struct eth_addr *mac) |
8b61709d | 1352 | { |
b5d57fc8 | 1353 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
86383816 | 1354 | int error; |
44445cac | 1355 | |
86383816 | 1356 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 1357 | if (!(netdev->cache_valid & VALID_ETHERADDR)) { |
86383816 | 1358 | netdev->ether_addr_error = get_etheraddr(netdev_get_name(netdev_), |
74ff3298 | 1359 | &netdev->etheraddr); |
b5d57fc8 | 1360 | netdev->cache_valid |= VALID_ETHERADDR; |
8b61709d | 1361 | } |
44445cac | 1362 | |
86383816 BP |
1363 | error = netdev->ether_addr_error; |
1364 | if (!error) { | |
74ff3298 | 1365 | *mac = netdev->etheraddr; |
44445cac | 1366 | } |
86383816 | 1367 | ovs_mutex_unlock(&netdev->mutex); |
44445cac | 1368 | |
86383816 | 1369 | return error; |
8b61709d BP |
1370 | } |
1371 | ||
8b61709d | 1372 | static int |
73371c09 | 1373 | netdev_linux_get_mtu__(struct netdev_linux *netdev, int *mtup) |
8b61709d | 1374 | { |
86383816 BP |
1375 | int error; |
1376 | ||
b5d57fc8 | 1377 | if (!(netdev->cache_valid & VALID_MTU)) { |
8b61709d | 1378 | struct ifreq ifr; |
90a6637d | 1379 | |
86383816 | 1380 | netdev->netdev_mtu_error = af_inet_ifreq_ioctl( |
73371c09 | 1381 | netdev_get_name(&netdev->up), &ifr, SIOCGIFMTU, "SIOCGIFMTU"); |
b5d57fc8 BP |
1382 | netdev->mtu = ifr.ifr_mtu; |
1383 | netdev->cache_valid |= VALID_MTU; | |
8b61709d | 1384 | } |
90a6637d | 1385 | |
86383816 BP |
1386 | error = netdev->netdev_mtu_error; |
1387 | if (!error) { | |
b5d57fc8 | 1388 | *mtup = netdev->mtu; |
90a6637d | 1389 | } |
73371c09 BP |
1390 | |
1391 | return error; | |
1392 | } | |
1393 | ||
1394 | /* Returns the maximum size of transmitted (and received) packets on 'netdev', | |
1395 | * in bytes, not including the hardware header; thus, this is typically 1500 | |
1396 | * bytes for Ethernet devices. */ | |
1397 | static int | |
1398 | netdev_linux_get_mtu(const struct netdev *netdev_, int *mtup) | |
1399 | { | |
1400 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
1401 | int error; | |
1402 | ||
1403 | ovs_mutex_lock(&netdev->mutex); | |
1404 | error = netdev_linux_get_mtu__(netdev, mtup); | |
86383816 BP |
1405 | ovs_mutex_unlock(&netdev->mutex); |
1406 | ||
1407 | return error; | |
8b61709d BP |
1408 | } |
1409 | ||
9b020780 PS |
1410 | /* Sets the maximum size of transmitted (MTU) for given device using linux |
1411 | * networking ioctl interface. | |
1412 | */ | |
1413 | static int | |
4124cb12 | 1414 | netdev_linux_set_mtu(struct netdev *netdev_, int mtu) |
9b020780 | 1415 | { |
b5d57fc8 | 1416 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
9b020780 PS |
1417 | struct ifreq ifr; |
1418 | int error; | |
1419 | ||
86383816 | 1420 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 1421 | if (netdev->cache_valid & VALID_MTU) { |
86383816 BP |
1422 | error = netdev->netdev_mtu_error; |
1423 | if (error || netdev->mtu == mtu) { | |
1424 | goto exit; | |
90a6637d | 1425 | } |
b5d57fc8 | 1426 | netdev->cache_valid &= ~VALID_MTU; |
153e5481 | 1427 | } |
9b020780 | 1428 | ifr.ifr_mtu = mtu; |
259e0b1a BP |
1429 | error = af_inet_ifreq_ioctl(netdev_get_name(netdev_), &ifr, |
1430 | SIOCSIFMTU, "SIOCSIFMTU"); | |
90a6637d | 1431 | if (!error || error == ENODEV) { |
b5d57fc8 BP |
1432 | netdev->netdev_mtu_error = error; |
1433 | netdev->mtu = ifr.ifr_mtu; | |
1434 | netdev->cache_valid |= VALID_MTU; | |
9b020780 | 1435 | } |
86383816 BP |
1436 | exit: |
1437 | ovs_mutex_unlock(&netdev->mutex); | |
90a6637d | 1438 | return error; |
9b020780 PS |
1439 | } |
1440 | ||
9ab3d9a3 BP |
1441 | /* Returns the ifindex of 'netdev', if successful, as a positive number. |
1442 | * On failure, returns a negative errno value. */ | |
1443 | static int | |
86383816 | 1444 | netdev_linux_get_ifindex(const struct netdev *netdev_) |
9ab3d9a3 | 1445 | { |
86383816 | 1446 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
9ab3d9a3 BP |
1447 | int ifindex, error; |
1448 | ||
86383816 BP |
1449 | ovs_mutex_lock(&netdev->mutex); |
1450 | error = get_ifindex(netdev_, &ifindex); | |
1451 | ovs_mutex_unlock(&netdev->mutex); | |
1452 | ||
9ab3d9a3 BP |
1453 | return error ? -error : ifindex; |
1454 | } | |
1455 | ||
8b61709d BP |
1456 | static int |
1457 | netdev_linux_get_carrier(const struct netdev *netdev_, bool *carrier) | |
1458 | { | |
b5d57fc8 | 1459 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
8b61709d | 1460 | |
86383816 | 1461 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 BP |
1462 | if (netdev->miimon_interval > 0) { |
1463 | *carrier = netdev->miimon; | |
3a183124 | 1464 | } else { |
b5d57fc8 | 1465 | *carrier = (netdev->ifi_flags & IFF_RUNNING) != 0; |
8b61709d | 1466 | } |
86383816 | 1467 | ovs_mutex_unlock(&netdev->mutex); |
8b61709d | 1468 | |
3a183124 | 1469 | return 0; |
8b61709d BP |
1470 | } |
1471 | ||
65c3058c | 1472 | static long long int |
86383816 | 1473 | netdev_linux_get_carrier_resets(const struct netdev *netdev_) |
65c3058c | 1474 | { |
86383816 BP |
1475 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
1476 | long long int carrier_resets; | |
1477 | ||
1478 | ovs_mutex_lock(&netdev->mutex); | |
1479 | carrier_resets = netdev->carrier_resets; | |
1480 | ovs_mutex_unlock(&netdev->mutex); | |
1481 | ||
1482 | return carrier_resets; | |
65c3058c EJ |
1483 | } |
1484 | ||
63331829 | 1485 | static int |
1670c579 EJ |
1486 | netdev_linux_do_miimon(const char *name, int cmd, const char *cmd_name, |
1487 | struct mii_ioctl_data *data) | |
63331829 | 1488 | { |
63331829 | 1489 | struct ifreq ifr; |
782e6111 | 1490 | int error; |
63331829 | 1491 | |
63331829 | 1492 | memset(&ifr, 0, sizeof ifr); |
782e6111 | 1493 | memcpy(&ifr.ifr_data, data, sizeof *data); |
259e0b1a | 1494 | error = af_inet_ifreq_ioctl(name, &ifr, cmd, cmd_name); |
782e6111 | 1495 | memcpy(data, &ifr.ifr_data, sizeof *data); |
63331829 | 1496 | |
782e6111 EJ |
1497 | return error; |
1498 | } | |
1499 | ||
1500 | static int | |
1670c579 | 1501 | netdev_linux_get_miimon(const char *name, bool *miimon) |
782e6111 | 1502 | { |
782e6111 EJ |
1503 | struct mii_ioctl_data data; |
1504 | int error; | |
63331829 | 1505 | |
782e6111 EJ |
1506 | *miimon = false; |
1507 | ||
1508 | memset(&data, 0, sizeof data); | |
1670c579 | 1509 | error = netdev_linux_do_miimon(name, SIOCGMIIPHY, "SIOCGMIIPHY", &data); |
782e6111 EJ |
1510 | if (!error) { |
1511 | /* data.phy_id is filled out by previous SIOCGMIIPHY miimon call. */ | |
1512 | data.reg_num = MII_BMSR; | |
1670c579 | 1513 | error = netdev_linux_do_miimon(name, SIOCGMIIREG, "SIOCGMIIREG", |
782e6111 | 1514 | &data); |
63331829 EJ |
1515 | |
1516 | if (!error) { | |
782e6111 | 1517 | *miimon = !!(data.val_out & BMSR_LSTATUS); |
63331829 | 1518 | } |
9120cfc0 DH |
1519 | } |
1520 | if (error) { | |
63331829 | 1521 | struct ethtool_cmd ecmd; |
63331829 EJ |
1522 | |
1523 | VLOG_DBG_RL(&rl, "%s: failed to query MII, falling back to ethtool", | |
1524 | name); | |
1525 | ||
ab985a77 | 1526 | COVERAGE_INC(netdev_get_ethtool); |
63331829 EJ |
1527 | memset(&ecmd, 0, sizeof ecmd); |
1528 | error = netdev_linux_do_ethtool(name, &ecmd, ETHTOOL_GLINK, | |
1529 | "ETHTOOL_GLINK"); | |
1530 | if (!error) { | |
782e6111 EJ |
1531 | struct ethtool_value eval; |
1532 | ||
1533 | memcpy(&eval, &ecmd, sizeof eval); | |
1534 | *miimon = !!eval.data; | |
63331829 EJ |
1535 | } else { |
1536 | VLOG_WARN_RL(&rl, "%s: ethtool link status failed", name); | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | return error; | |
1541 | } | |
1542 | ||
1670c579 EJ |
1543 | static int |
1544 | netdev_linux_set_miimon_interval(struct netdev *netdev_, | |
1545 | long long int interval) | |
1546 | { | |
b5d57fc8 | 1547 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
1670c579 | 1548 | |
86383816 | 1549 | ovs_mutex_lock(&netdev->mutex); |
1670c579 | 1550 | interval = interval > 0 ? MAX(interval, 100) : 0; |
b5d57fc8 | 1551 | if (netdev->miimon_interval != interval) { |
19c8e9c1 | 1552 | if (interval && !netdev->miimon_interval) { |
812c272c | 1553 | atomic_count_inc(&miimon_cnt); |
19c8e9c1 | 1554 | } else if (!interval && netdev->miimon_interval) { |
812c272c | 1555 | atomic_count_dec(&miimon_cnt); |
19c8e9c1 JS |
1556 | } |
1557 | ||
b5d57fc8 BP |
1558 | netdev->miimon_interval = interval; |
1559 | timer_set_expired(&netdev->miimon_timer); | |
1670c579 | 1560 | } |
86383816 | 1561 | ovs_mutex_unlock(&netdev->mutex); |
1670c579 EJ |
1562 | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | static void | |
1567 | netdev_linux_miimon_run(void) | |
1568 | { | |
1569 | struct shash device_shash; | |
1570 | struct shash_node *node; | |
1571 | ||
1572 | shash_init(&device_shash); | |
b5d57fc8 | 1573 | netdev_get_devices(&netdev_linux_class, &device_shash); |
1670c579 | 1574 | SHASH_FOR_EACH (node, &device_shash) { |
96172faa BP |
1575 | struct netdev *netdev = node->data; |
1576 | struct netdev_linux *dev = netdev_linux_cast(netdev); | |
1670c579 EJ |
1577 | bool miimon; |
1578 | ||
86383816 BP |
1579 | ovs_mutex_lock(&dev->mutex); |
1580 | if (dev->miimon_interval > 0 && timer_expired(&dev->miimon_timer)) { | |
1581 | netdev_linux_get_miimon(dev->up.name, &miimon); | |
1582 | if (miimon != dev->miimon) { | |
1583 | dev->miimon = miimon; | |
1584 | netdev_linux_changed(dev, dev->ifi_flags, 0); | |
1585 | } | |
1670c579 | 1586 | |
86383816 | 1587 | timer_set_duration(&dev->miimon_timer, dev->miimon_interval); |
1670c579 | 1588 | } |
86383816 | 1589 | ovs_mutex_unlock(&dev->mutex); |
2f980d74 | 1590 | netdev_close(netdev); |
1670c579 EJ |
1591 | } |
1592 | ||
1593 | shash_destroy(&device_shash); | |
1594 | } | |
1595 | ||
1596 | static void | |
1597 | netdev_linux_miimon_wait(void) | |
1598 | { | |
1599 | struct shash device_shash; | |
1600 | struct shash_node *node; | |
1601 | ||
1602 | shash_init(&device_shash); | |
b5d57fc8 | 1603 | netdev_get_devices(&netdev_linux_class, &device_shash); |
1670c579 | 1604 | SHASH_FOR_EACH (node, &device_shash) { |
96172faa BP |
1605 | struct netdev *netdev = node->data; |
1606 | struct netdev_linux *dev = netdev_linux_cast(netdev); | |
1670c579 | 1607 | |
86383816 | 1608 | ovs_mutex_lock(&dev->mutex); |
1670c579 EJ |
1609 | if (dev->miimon_interval > 0) { |
1610 | timer_wait(&dev->miimon_timer); | |
1611 | } | |
86383816 | 1612 | ovs_mutex_unlock(&dev->mutex); |
2f980d74 | 1613 | netdev_close(netdev); |
1670c579 EJ |
1614 | } |
1615 | shash_destroy(&device_shash); | |
1616 | } | |
1617 | ||
92df599c JG |
1618 | static void |
1619 | swap_uint64(uint64_t *a, uint64_t *b) | |
1620 | { | |
1de0e8ae BP |
1621 | uint64_t tmp = *a; |
1622 | *a = *b; | |
1623 | *b = tmp; | |
92df599c JG |
1624 | } |
1625 | ||
c060c4cf EJ |
1626 | /* Copies 'src' into 'dst', performing format conversion in the process. |
1627 | * | |
1628 | * 'src' is allowed to be misaligned. */ | |
1629 | static void | |
1630 | netdev_stats_from_ovs_vport_stats(struct netdev_stats *dst, | |
1631 | const struct ovs_vport_stats *src) | |
1632 | { | |
6a54dedc BP |
1633 | dst->rx_packets = get_32aligned_u64(&src->rx_packets); |
1634 | dst->tx_packets = get_32aligned_u64(&src->tx_packets); | |
1635 | dst->rx_bytes = get_32aligned_u64(&src->rx_bytes); | |
1636 | dst->tx_bytes = get_32aligned_u64(&src->tx_bytes); | |
1637 | dst->rx_errors = get_32aligned_u64(&src->rx_errors); | |
1638 | dst->tx_errors = get_32aligned_u64(&src->tx_errors); | |
1639 | dst->rx_dropped = get_32aligned_u64(&src->rx_dropped); | |
1640 | dst->tx_dropped = get_32aligned_u64(&src->tx_dropped); | |
c060c4cf EJ |
1641 | dst->multicast = 0; |
1642 | dst->collisions = 0; | |
1643 | dst->rx_length_errors = 0; | |
1644 | dst->rx_over_errors = 0; | |
1645 | dst->rx_crc_errors = 0; | |
1646 | dst->rx_frame_errors = 0; | |
1647 | dst->rx_fifo_errors = 0; | |
1648 | dst->rx_missed_errors = 0; | |
1649 | dst->tx_aborted_errors = 0; | |
1650 | dst->tx_carrier_errors = 0; | |
1651 | dst->tx_fifo_errors = 0; | |
1652 | dst->tx_heartbeat_errors = 0; | |
1653 | dst->tx_window_errors = 0; | |
1654 | } | |
1655 | ||
1656 | static int | |
1657 | get_stats_via_vport__(const struct netdev *netdev, struct netdev_stats *stats) | |
1658 | { | |
93451a0a | 1659 | struct dpif_netlink_vport reply; |
c060c4cf EJ |
1660 | struct ofpbuf *buf; |
1661 | int error; | |
1662 | ||
93451a0a | 1663 | error = dpif_netlink_vport_get(netdev_get_name(netdev), &reply, &buf); |
c060c4cf EJ |
1664 | if (error) { |
1665 | return error; | |
1666 | } else if (!reply.stats) { | |
1667 | ofpbuf_delete(buf); | |
1668 | return EOPNOTSUPP; | |
1669 | } | |
1670 | ||
1671 | netdev_stats_from_ovs_vport_stats(stats, reply.stats); | |
1672 | ||
1673 | ofpbuf_delete(buf); | |
1674 | ||
1675 | return 0; | |
1676 | } | |
1677 | ||
f613a0d7 PS |
1678 | static void |
1679 | get_stats_via_vport(const struct netdev *netdev_, | |
1680 | struct netdev_stats *stats) | |
8b61709d | 1681 | { |
b5d57fc8 | 1682 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
8b61709d | 1683 | |
b5d57fc8 BP |
1684 | if (!netdev->vport_stats_error || |
1685 | !(netdev->cache_valid & VALID_VPORT_STAT_ERROR)) { | |
f613a0d7 | 1686 | int error; |
7fbef77a | 1687 | |
c060c4cf | 1688 | error = get_stats_via_vport__(netdev_, stats); |
bb13fe5e | 1689 | if (error && error != ENOENT && error != ENODEV) { |
a57a8488 | 1690 | VLOG_WARN_RL(&rl, "%s: obtaining netdev stats via vport failed " |
10a89ef0 BP |
1691 | "(%s)", |
1692 | netdev_get_name(netdev_), ovs_strerror(error)); | |
f613a0d7 | 1693 | } |
b5d57fc8 BP |
1694 | netdev->vport_stats_error = error; |
1695 | netdev->cache_valid |= VALID_VPORT_STAT_ERROR; | |
8b61709d | 1696 | } |
f613a0d7 | 1697 | } |
8b61709d | 1698 | |
f613a0d7 PS |
1699 | /* Retrieves current device stats for 'netdev-linux'. */ |
1700 | static int | |
1701 | netdev_linux_get_stats(const struct netdev *netdev_, | |
1702 | struct netdev_stats *stats) | |
1703 | { | |
b5d57fc8 | 1704 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
f613a0d7 PS |
1705 | struct netdev_stats dev_stats; |
1706 | int error; | |
1707 | ||
86383816 | 1708 | ovs_mutex_lock(&netdev->mutex); |
f613a0d7 | 1709 | get_stats_via_vport(netdev_, stats); |
35eef899 | 1710 | error = get_stats_via_netlink(netdev_, &dev_stats); |
f613a0d7 | 1711 | if (error) { |
86383816 BP |
1712 | if (!netdev->vport_stats_error) { |
1713 | error = 0; | |
f613a0d7 | 1714 | } |
86383816 | 1715 | } else if (netdev->vport_stats_error) { |
04c881eb | 1716 | /* stats not available from OVS then use netdev stats. */ |
f613a0d7 PS |
1717 | *stats = dev_stats; |
1718 | } else { | |
04c881eb AZ |
1719 | /* Use kernel netdev's packet and byte counts since vport's counters |
1720 | * do not reflect packet counts on the wire when GSO, TSO or GRO are | |
1721 | * enabled. */ | |
1722 | stats->rx_packets = dev_stats.rx_packets; | |
1723 | stats->rx_bytes = dev_stats.rx_bytes; | |
1724 | stats->tx_packets = dev_stats.tx_packets; | |
1725 | stats->tx_bytes = dev_stats.tx_bytes; | |
1726 | ||
f613a0d7 PS |
1727 | stats->rx_errors += dev_stats.rx_errors; |
1728 | stats->tx_errors += dev_stats.tx_errors; | |
1729 | stats->rx_dropped += dev_stats.rx_dropped; | |
1730 | stats->tx_dropped += dev_stats.tx_dropped; | |
1731 | stats->multicast += dev_stats.multicast; | |
1732 | stats->collisions += dev_stats.collisions; | |
1733 | stats->rx_length_errors += dev_stats.rx_length_errors; | |
1734 | stats->rx_over_errors += dev_stats.rx_over_errors; | |
1735 | stats->rx_crc_errors += dev_stats.rx_crc_errors; | |
1736 | stats->rx_frame_errors += dev_stats.rx_frame_errors; | |
1737 | stats->rx_fifo_errors += dev_stats.rx_fifo_errors; | |
1738 | stats->rx_missed_errors += dev_stats.rx_missed_errors; | |
1739 | stats->tx_aborted_errors += dev_stats.tx_aborted_errors; | |
1740 | stats->tx_carrier_errors += dev_stats.tx_carrier_errors; | |
1741 | stats->tx_fifo_errors += dev_stats.tx_fifo_errors; | |
1742 | stats->tx_heartbeat_errors += dev_stats.tx_heartbeat_errors; | |
1743 | stats->tx_window_errors += dev_stats.tx_window_errors; | |
1744 | } | |
86383816 BP |
1745 | ovs_mutex_unlock(&netdev->mutex); |
1746 | ||
1747 | return error; | |
f613a0d7 PS |
1748 | } |
1749 | ||
1750 | /* Retrieves current device stats for 'netdev-tap' netdev or | |
1751 | * netdev-internal. */ | |
1752 | static int | |
15aee116 | 1753 | netdev_tap_get_stats(const struct netdev *netdev_, struct netdev_stats *stats) |
f613a0d7 | 1754 | { |
b5d57fc8 | 1755 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
f613a0d7 PS |
1756 | struct netdev_stats dev_stats; |
1757 | int error; | |
1758 | ||
86383816 | 1759 | ovs_mutex_lock(&netdev->mutex); |
f613a0d7 | 1760 | get_stats_via_vport(netdev_, stats); |
35eef899 | 1761 | error = get_stats_via_netlink(netdev_, &dev_stats); |
f613a0d7 | 1762 | if (error) { |
86383816 BP |
1763 | if (!netdev->vport_stats_error) { |
1764 | error = 0; | |
8b61709d | 1765 | } |
86383816 BP |
1766 | } else if (netdev->vport_stats_error) { |
1767 | /* Transmit and receive stats will appear to be swapped relative to the | |
1768 | * other ports since we are the one sending the data, not a remote | |
1769 | * computer. For consistency, we swap them back here. This does not | |
1770 | * apply if we are getting stats from the vport layer because it always | |
1771 | * tracks stats from the perspective of the switch. */ | |
fe6b0e03 | 1772 | |
f613a0d7 | 1773 | *stats = dev_stats; |
92df599c JG |
1774 | swap_uint64(&stats->rx_packets, &stats->tx_packets); |
1775 | swap_uint64(&stats->rx_bytes, &stats->tx_bytes); | |
1776 | swap_uint64(&stats->rx_errors, &stats->tx_errors); | |
1777 | swap_uint64(&stats->rx_dropped, &stats->tx_dropped); | |
fe6b0e03 JG |
1778 | stats->rx_length_errors = 0; |
1779 | stats->rx_over_errors = 0; | |
1780 | stats->rx_crc_errors = 0; | |
1781 | stats->rx_frame_errors = 0; | |
1782 | stats->rx_fifo_errors = 0; | |
1783 | stats->rx_missed_errors = 0; | |
1784 | stats->tx_aborted_errors = 0; | |
1785 | stats->tx_carrier_errors = 0; | |
1786 | stats->tx_fifo_errors = 0; | |
1787 | stats->tx_heartbeat_errors = 0; | |
1788 | stats->tx_window_errors = 0; | |
f613a0d7 | 1789 | } else { |
04c881eb AZ |
1790 | /* Use kernel netdev's packet and byte counts since vport counters |
1791 | * do not reflect packet counts on the wire when GSO, TSO or GRO | |
1792 | * are enabled. */ | |
1793 | stats->rx_packets = dev_stats.tx_packets; | |
1794 | stats->rx_bytes = dev_stats.tx_bytes; | |
1795 | stats->tx_packets = dev_stats.rx_packets; | |
1796 | stats->tx_bytes = dev_stats.rx_bytes; | |
1797 | ||
f613a0d7 PS |
1798 | stats->rx_dropped += dev_stats.tx_dropped; |
1799 | stats->tx_dropped += dev_stats.rx_dropped; | |
fe6b0e03 | 1800 | |
f613a0d7 PS |
1801 | stats->rx_errors += dev_stats.tx_errors; |
1802 | stats->tx_errors += dev_stats.rx_errors; | |
1803 | ||
1804 | stats->multicast += dev_stats.multicast; | |
1805 | stats->collisions += dev_stats.collisions; | |
1806 | } | |
86383816 BP |
1807 | ovs_mutex_unlock(&netdev->mutex); |
1808 | ||
1809 | return error; | |
8b61709d BP |
1810 | } |
1811 | ||
bba1e6f3 PS |
1812 | static int |
1813 | netdev_internal_get_stats(const struct netdev *netdev_, | |
1814 | struct netdev_stats *stats) | |
1815 | { | |
b5d57fc8 | 1816 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
86383816 | 1817 | int error; |
bba1e6f3 | 1818 | |
86383816 | 1819 | ovs_mutex_lock(&netdev->mutex); |
bba1e6f3 | 1820 | get_stats_via_vport(netdev_, stats); |
86383816 BP |
1821 | error = netdev->vport_stats_error; |
1822 | ovs_mutex_unlock(&netdev->mutex); | |
1823 | ||
1824 | return error; | |
bba1e6f3 PS |
1825 | } |
1826 | ||
51f87458 | 1827 | static void |
b5d57fc8 | 1828 | netdev_linux_read_features(struct netdev_linux *netdev) |
8b61709d BP |
1829 | { |
1830 | struct ethtool_cmd ecmd; | |
6c038611 | 1831 | uint32_t speed; |
8b61709d BP |
1832 | int error; |
1833 | ||
b5d57fc8 | 1834 | if (netdev->cache_valid & VALID_FEATURES) { |
51f87458 PS |
1835 | return; |
1836 | } | |
1837 | ||
ab985a77 | 1838 | COVERAGE_INC(netdev_get_ethtool); |
8b61709d | 1839 | memset(&ecmd, 0, sizeof ecmd); |
b5d57fc8 | 1840 | error = netdev_linux_do_ethtool(netdev->up.name, &ecmd, |
8b61709d BP |
1841 | ETHTOOL_GSET, "ETHTOOL_GSET"); |
1842 | if (error) { | |
51f87458 | 1843 | goto out; |
8b61709d BP |
1844 | } |
1845 | ||
1846 | /* Supported features. */ | |
b5d57fc8 | 1847 | netdev->supported = 0; |
8b61709d | 1848 | if (ecmd.supported & SUPPORTED_10baseT_Half) { |
b5d57fc8 | 1849 | netdev->supported |= NETDEV_F_10MB_HD; |
8b61709d BP |
1850 | } |
1851 | if (ecmd.supported & SUPPORTED_10baseT_Full) { | |
b5d57fc8 | 1852 | netdev->supported |= NETDEV_F_10MB_FD; |
8b61709d BP |
1853 | } |
1854 | if (ecmd.supported & SUPPORTED_100baseT_Half) { | |
b5d57fc8 | 1855 | netdev->supported |= NETDEV_F_100MB_HD; |
8b61709d BP |
1856 | } |
1857 | if (ecmd.supported & SUPPORTED_100baseT_Full) { | |
b5d57fc8 | 1858 | netdev->supported |= NETDEV_F_100MB_FD; |
8b61709d BP |
1859 | } |
1860 | if (ecmd.supported & SUPPORTED_1000baseT_Half) { | |
b5d57fc8 | 1861 | netdev->supported |= NETDEV_F_1GB_HD; |
8b61709d | 1862 | } |
67bed84c SH |
1863 | if ((ecmd.supported & SUPPORTED_1000baseT_Full) || |
1864 | (ecmd.supported & SUPPORTED_1000baseKX_Full)) { | |
b5d57fc8 | 1865 | netdev->supported |= NETDEV_F_1GB_FD; |
8b61709d | 1866 | } |
67bed84c SH |
1867 | if ((ecmd.supported & SUPPORTED_10000baseT_Full) || |
1868 | (ecmd.supported & SUPPORTED_10000baseKX4_Full) || | |
1869 | (ecmd.supported & SUPPORTED_10000baseKR_Full) || | |
1870 | (ecmd.supported & SUPPORTED_10000baseR_FEC)) { | |
b5d57fc8 | 1871 | netdev->supported |= NETDEV_F_10GB_FD; |
8b61709d | 1872 | } |
67bed84c SH |
1873 | if ((ecmd.supported & SUPPORTED_40000baseKR4_Full) || |
1874 | (ecmd.supported & SUPPORTED_40000baseCR4_Full) || | |
1875 | (ecmd.supported & SUPPORTED_40000baseSR4_Full) || | |
1876 | (ecmd.supported & SUPPORTED_40000baseLR4_Full)) { | |
1877 | netdev->supported |= NETDEV_F_40GB_FD; | |
1878 | } | |
8b61709d | 1879 | if (ecmd.supported & SUPPORTED_TP) { |
b5d57fc8 | 1880 | netdev->supported |= NETDEV_F_COPPER; |
8b61709d BP |
1881 | } |
1882 | if (ecmd.supported & SUPPORTED_FIBRE) { | |
b5d57fc8 | 1883 | netdev->supported |= NETDEV_F_FIBER; |
8b61709d BP |
1884 | } |
1885 | if (ecmd.supported & SUPPORTED_Autoneg) { | |
b5d57fc8 | 1886 | netdev->supported |= NETDEV_F_AUTONEG; |
8b61709d BP |
1887 | } |
1888 | if (ecmd.supported & SUPPORTED_Pause) { | |
b5d57fc8 | 1889 | netdev->supported |= NETDEV_F_PAUSE; |
8b61709d BP |
1890 | } |
1891 | if (ecmd.supported & SUPPORTED_Asym_Pause) { | |
b5d57fc8 | 1892 | netdev->supported |= NETDEV_F_PAUSE_ASYM; |
8b61709d BP |
1893 | } |
1894 | ||
1895 | /* Advertised features. */ | |
b5d57fc8 | 1896 | netdev->advertised = 0; |
8b61709d | 1897 | if (ecmd.advertising & ADVERTISED_10baseT_Half) { |
b5d57fc8 | 1898 | netdev->advertised |= NETDEV_F_10MB_HD; |
8b61709d BP |
1899 | } |
1900 | if (ecmd.advertising & ADVERTISED_10baseT_Full) { | |
b5d57fc8 | 1901 | netdev->advertised |= NETDEV_F_10MB_FD; |
8b61709d BP |
1902 | } |
1903 | if (ecmd.advertising & ADVERTISED_100baseT_Half) { | |
b5d57fc8 | 1904 | netdev->advertised |= NETDEV_F_100MB_HD; |
8b61709d BP |
1905 | } |
1906 | if (ecmd.advertising & ADVERTISED_100baseT_Full) { | |
b5d57fc8 | 1907 | netdev->advertised |= NETDEV_F_100MB_FD; |
8b61709d BP |
1908 | } |
1909 | if (ecmd.advertising & ADVERTISED_1000baseT_Half) { | |
b5d57fc8 | 1910 | netdev->advertised |= NETDEV_F_1GB_HD; |
8b61709d | 1911 | } |
67bed84c SH |
1912 | if ((ecmd.advertising & ADVERTISED_1000baseT_Full) || |
1913 | (ecmd.advertising & ADVERTISED_1000baseKX_Full)) { | |
b5d57fc8 | 1914 | netdev->advertised |= NETDEV_F_1GB_FD; |
8b61709d | 1915 | } |
67bed84c SH |
1916 | if ((ecmd.advertising & ADVERTISED_10000baseT_Full) || |
1917 | (ecmd.advertising & ADVERTISED_10000baseKX4_Full) || | |
1918 | (ecmd.advertising & ADVERTISED_10000baseKR_Full) || | |
1919 | (ecmd.advertising & ADVERTISED_10000baseR_FEC)) { | |
b5d57fc8 | 1920 | netdev->advertised |= NETDEV_F_10GB_FD; |
8b61709d | 1921 | } |
67bed84c SH |
1922 | if ((ecmd.advertising & ADVERTISED_40000baseKR4_Full) || |
1923 | (ecmd.advertising & ADVERTISED_40000baseCR4_Full) || | |
1924 | (ecmd.advertising & ADVERTISED_40000baseSR4_Full) || | |
1925 | (ecmd.advertising & ADVERTISED_40000baseLR4_Full)) { | |
1926 | netdev->advertised |= NETDEV_F_40GB_FD; | |
1927 | } | |
8b61709d | 1928 | if (ecmd.advertising & ADVERTISED_TP) { |
b5d57fc8 | 1929 | netdev->advertised |= NETDEV_F_COPPER; |
8b61709d BP |
1930 | } |
1931 | if (ecmd.advertising & ADVERTISED_FIBRE) { | |
b5d57fc8 | 1932 | netdev->advertised |= NETDEV_F_FIBER; |
8b61709d BP |
1933 | } |
1934 | if (ecmd.advertising & ADVERTISED_Autoneg) { | |
b5d57fc8 | 1935 | netdev->advertised |= NETDEV_F_AUTONEG; |
8b61709d BP |
1936 | } |
1937 | if (ecmd.advertising & ADVERTISED_Pause) { | |
b5d57fc8 | 1938 | netdev->advertised |= NETDEV_F_PAUSE; |
8b61709d BP |
1939 | } |
1940 | if (ecmd.advertising & ADVERTISED_Asym_Pause) { | |
b5d57fc8 | 1941 | netdev->advertised |= NETDEV_F_PAUSE_ASYM; |
8b61709d BP |
1942 | } |
1943 | ||
1944 | /* Current settings. */ | |
0c615356 | 1945 | speed = ethtool_cmd_speed(&ecmd); |
6c038611 | 1946 | if (speed == SPEED_10) { |
b5d57fc8 | 1947 | netdev->current = ecmd.duplex ? NETDEV_F_10MB_FD : NETDEV_F_10MB_HD; |
6c038611 | 1948 | } else if (speed == SPEED_100) { |
b5d57fc8 | 1949 | netdev->current = ecmd.duplex ? NETDEV_F_100MB_FD : NETDEV_F_100MB_HD; |
6c038611 | 1950 | } else if (speed == SPEED_1000) { |
b5d57fc8 | 1951 | netdev->current = ecmd.duplex ? NETDEV_F_1GB_FD : NETDEV_F_1GB_HD; |
6c038611 | 1952 | } else if (speed == SPEED_10000) { |
b5d57fc8 | 1953 | netdev->current = NETDEV_F_10GB_FD; |
6c038611 | 1954 | } else if (speed == 40000) { |
b5d57fc8 | 1955 | netdev->current = NETDEV_F_40GB_FD; |
6c038611 | 1956 | } else if (speed == 100000) { |
b5d57fc8 | 1957 | netdev->current = NETDEV_F_100GB_FD; |
6c038611 | 1958 | } else if (speed == 1000000) { |
b5d57fc8 | 1959 | netdev->current = NETDEV_F_1TB_FD; |
8b61709d | 1960 | } else { |
b5d57fc8 | 1961 | netdev->current = 0; |
8b61709d BP |
1962 | } |
1963 | ||
1964 | if (ecmd.port == PORT_TP) { | |
b5d57fc8 | 1965 | netdev->current |= NETDEV_F_COPPER; |
8b61709d | 1966 | } else if (ecmd.port == PORT_FIBRE) { |
b5d57fc8 | 1967 | netdev->current |= NETDEV_F_FIBER; |
8b61709d BP |
1968 | } |
1969 | ||
1970 | if (ecmd.autoneg) { | |
b5d57fc8 | 1971 | netdev->current |= NETDEV_F_AUTONEG; |
8b61709d BP |
1972 | } |
1973 | ||
51f87458 | 1974 | out: |
b5d57fc8 BP |
1975 | netdev->cache_valid |= VALID_FEATURES; |
1976 | netdev->get_features_error = error; | |
51f87458 PS |
1977 | } |
1978 | ||
887ed8b2 BP |
1979 | /* Stores the features supported by 'netdev' into of '*current', '*advertised', |
1980 | * '*supported', and '*peer'. Each value is a bitmap of NETDEV_* bits. | |
1981 | * Returns 0 if successful, otherwise a positive errno value. */ | |
51f87458 PS |
1982 | static int |
1983 | netdev_linux_get_features(const struct netdev *netdev_, | |
a00ca915 EJ |
1984 | enum netdev_features *current, |
1985 | enum netdev_features *advertised, | |
1986 | enum netdev_features *supported, | |
1987 | enum netdev_features *peer) | |
51f87458 | 1988 | { |
b5d57fc8 | 1989 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
86383816 | 1990 | int error; |
51f87458 | 1991 | |
86383816 | 1992 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 1993 | netdev_linux_read_features(netdev); |
b5d57fc8 BP |
1994 | if (!netdev->get_features_error) { |
1995 | *current = netdev->current; | |
1996 | *advertised = netdev->advertised; | |
1997 | *supported = netdev->supported; | |
887ed8b2 | 1998 | *peer = 0; /* XXX */ |
51f87458 | 1999 | } |
86383816 BP |
2000 | error = netdev->get_features_error; |
2001 | ovs_mutex_unlock(&netdev->mutex); | |
2002 | ||
2003 | return error; | |
8b61709d BP |
2004 | } |
2005 | ||
2006 | /* Set the features advertised by 'netdev' to 'advertise'. */ | |
2007 | static int | |
86383816 | 2008 | netdev_linux_set_advertisements(struct netdev *netdev_, |
6c038611 | 2009 | enum netdev_features advertise) |
8b61709d | 2010 | { |
86383816 | 2011 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
8b61709d BP |
2012 | struct ethtool_cmd ecmd; |
2013 | int error; | |
2014 | ||
86383816 BP |
2015 | ovs_mutex_lock(&netdev->mutex); |
2016 | ||
ab985a77 | 2017 | COVERAGE_INC(netdev_get_ethtool); |
8b61709d | 2018 | memset(&ecmd, 0, sizeof ecmd); |
86383816 | 2019 | error = netdev_linux_do_ethtool(netdev_get_name(netdev_), &ecmd, |
8b61709d BP |
2020 | ETHTOOL_GSET, "ETHTOOL_GSET"); |
2021 | if (error) { | |
86383816 | 2022 | goto exit; |
8b61709d BP |
2023 | } |
2024 | ||
2025 | ecmd.advertising = 0; | |
6c038611 | 2026 | if (advertise & NETDEV_F_10MB_HD) { |
8b61709d BP |
2027 | ecmd.advertising |= ADVERTISED_10baseT_Half; |
2028 | } | |
6c038611 | 2029 | if (advertise & NETDEV_F_10MB_FD) { |
8b61709d BP |
2030 | ecmd.advertising |= ADVERTISED_10baseT_Full; |
2031 | } | |
6c038611 | 2032 | if (advertise & NETDEV_F_100MB_HD) { |
8b61709d BP |
2033 | ecmd.advertising |= ADVERTISED_100baseT_Half; |
2034 | } | |
6c038611 | 2035 | if (advertise & NETDEV_F_100MB_FD) { |
8b61709d BP |
2036 | ecmd.advertising |= ADVERTISED_100baseT_Full; |
2037 | } | |
6c038611 | 2038 | if (advertise & NETDEV_F_1GB_HD) { |
8b61709d BP |
2039 | ecmd.advertising |= ADVERTISED_1000baseT_Half; |
2040 | } | |
6c038611 | 2041 | if (advertise & NETDEV_F_1GB_FD) { |
8b61709d BP |
2042 | ecmd.advertising |= ADVERTISED_1000baseT_Full; |
2043 | } | |
6c038611 | 2044 | if (advertise & NETDEV_F_10GB_FD) { |
8b61709d BP |
2045 | ecmd.advertising |= ADVERTISED_10000baseT_Full; |
2046 | } | |
6c038611 | 2047 | if (advertise & NETDEV_F_COPPER) { |
8b61709d BP |
2048 | ecmd.advertising |= ADVERTISED_TP; |
2049 | } | |
6c038611 | 2050 | if (advertise & NETDEV_F_FIBER) { |
8b61709d BP |
2051 | ecmd.advertising |= ADVERTISED_FIBRE; |
2052 | } | |
6c038611 | 2053 | if (advertise & NETDEV_F_AUTONEG) { |
8b61709d BP |
2054 | ecmd.advertising |= ADVERTISED_Autoneg; |
2055 | } | |
6c038611 | 2056 | if (advertise & NETDEV_F_PAUSE) { |
8b61709d BP |
2057 | ecmd.advertising |= ADVERTISED_Pause; |
2058 | } | |
6c038611 | 2059 | if (advertise & NETDEV_F_PAUSE_ASYM) { |
8b61709d BP |
2060 | ecmd.advertising |= ADVERTISED_Asym_Pause; |
2061 | } | |
ab985a77 | 2062 | COVERAGE_INC(netdev_set_ethtool); |
86383816 BP |
2063 | error = netdev_linux_do_ethtool(netdev_get_name(netdev_), &ecmd, |
2064 | ETHTOOL_SSET, "ETHTOOL_SSET"); | |
2065 | ||
2066 | exit: | |
2067 | ovs_mutex_unlock(&netdev->mutex); | |
2068 | return error; | |
8b61709d BP |
2069 | } |
2070 | ||
f8500004 JP |
2071 | /* Attempts to set input rate limiting (policing) policy. Returns 0 if |
2072 | * successful, otherwise a positive errno value. */ | |
8b61709d | 2073 | static int |
b5d57fc8 | 2074 | netdev_linux_set_policing(struct netdev *netdev_, |
8b61709d BP |
2075 | uint32_t kbits_rate, uint32_t kbits_burst) |
2076 | { | |
b5d57fc8 BP |
2077 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
2078 | const char *netdev_name = netdev_get_name(netdev_); | |
f8500004 | 2079 | int error; |
8b61709d | 2080 | |
80a86fbe | 2081 | kbits_burst = (!kbits_rate ? 0 /* Force to 0 if no rate specified. */ |
79abacc8 | 2082 | : !kbits_burst ? 8000 /* Default to 8000 kbits if 0. */ |
80a86fbe BP |
2083 | : kbits_burst); /* Stick with user-specified value. */ |
2084 | ||
86383816 | 2085 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2086 | if (netdev->cache_valid & VALID_POLICING) { |
86383816 BP |
2087 | error = netdev->netdev_policing_error; |
2088 | if (error || (netdev->kbits_rate == kbits_rate && | |
2089 | netdev->kbits_burst == kbits_burst)) { | |
c9f71668 | 2090 | /* Assume that settings haven't changed since we last set them. */ |
86383816 | 2091 | goto out; |
c9f71668 | 2092 | } |
b5d57fc8 | 2093 | netdev->cache_valid &= ~VALID_POLICING; |
80a86fbe BP |
2094 | } |
2095 | ||
ac8c3412 | 2096 | COVERAGE_INC(netdev_set_policing); |
f8500004 | 2097 | /* Remove any existing ingress qdisc. */ |
b5d57fc8 | 2098 | error = tc_add_del_ingress_qdisc(netdev_, false); |
f8500004 JP |
2099 | if (error) { |
2100 | VLOG_WARN_RL(&rl, "%s: removing policing failed: %s", | |
10a89ef0 | 2101 | netdev_name, ovs_strerror(error)); |
c9f71668 | 2102 | goto out; |
f8500004 JP |
2103 | } |
2104 | ||
8b61709d | 2105 | if (kbits_rate) { |
b5d57fc8 | 2106 | error = tc_add_del_ingress_qdisc(netdev_, true); |
f8500004 JP |
2107 | if (error) { |
2108 | VLOG_WARN_RL(&rl, "%s: adding policing qdisc failed: %s", | |
10a89ef0 | 2109 | netdev_name, ovs_strerror(error)); |
c9f71668 | 2110 | goto out; |
8b61709d BP |
2111 | } |
2112 | ||
b5d57fc8 | 2113 | error = tc_add_policer(netdev_, kbits_rate, kbits_burst); |
f8500004 JP |
2114 | if (error){ |
2115 | VLOG_WARN_RL(&rl, "%s: adding policing action failed: %s", | |
10a89ef0 | 2116 | netdev_name, ovs_strerror(error)); |
c9f71668 | 2117 | goto out; |
8b61709d | 2118 | } |
8b61709d BP |
2119 | } |
2120 | ||
b5d57fc8 BP |
2121 | netdev->kbits_rate = kbits_rate; |
2122 | netdev->kbits_burst = kbits_burst; | |
f8500004 | 2123 | |
c9f71668 PS |
2124 | out: |
2125 | if (!error || error == ENODEV) { | |
b5d57fc8 BP |
2126 | netdev->netdev_policing_error = error; |
2127 | netdev->cache_valid |= VALID_POLICING; | |
c9f71668 | 2128 | } |
86383816 | 2129 | ovs_mutex_unlock(&netdev->mutex); |
c9f71668 | 2130 | return error; |
8b61709d BP |
2131 | } |
2132 | ||
c1c9c9c4 BP |
2133 | static int |
2134 | netdev_linux_get_qos_types(const struct netdev *netdev OVS_UNUSED, | |
19993ef3 | 2135 | struct sset *types) |
c1c9c9c4 | 2136 | { |
559eb230 | 2137 | const struct tc_ops *const *opsp; |
c1c9c9c4 BP |
2138 | for (opsp = tcs; *opsp != NULL; opsp++) { |
2139 | const struct tc_ops *ops = *opsp; | |
2140 | if (ops->tc_install && ops->ovs_name[0] != '\0') { | |
19993ef3 | 2141 | sset_add(types, ops->ovs_name); |
c1c9c9c4 BP |
2142 | } |
2143 | } | |
2144 | return 0; | |
2145 | } | |
2146 | ||
2147 | static const struct tc_ops * | |
2148 | tc_lookup_ovs_name(const char *name) | |
2149 | { | |
559eb230 | 2150 | const struct tc_ops *const *opsp; |
c1c9c9c4 BP |
2151 | |
2152 | for (opsp = tcs; *opsp != NULL; opsp++) { | |
2153 | const struct tc_ops *ops = *opsp; | |
2154 | if (!strcmp(name, ops->ovs_name)) { | |
2155 | return ops; | |
2156 | } | |
2157 | } | |
2158 | return NULL; | |
2159 | } | |
2160 | ||
2161 | static const struct tc_ops * | |
2162 | tc_lookup_linux_name(const char *name) | |
2163 | { | |
559eb230 | 2164 | const struct tc_ops *const *opsp; |
c1c9c9c4 BP |
2165 | |
2166 | for (opsp = tcs; *opsp != NULL; opsp++) { | |
2167 | const struct tc_ops *ops = *opsp; | |
2168 | if (ops->linux_name && !strcmp(name, ops->linux_name)) { | |
2169 | return ops; | |
2170 | } | |
2171 | } | |
2172 | return NULL; | |
2173 | } | |
2174 | ||
93b13be8 | 2175 | static struct tc_queue * |
b5d57fc8 | 2176 | tc_find_queue__(const struct netdev *netdev_, unsigned int queue_id, |
93b13be8 BP |
2177 | size_t hash) |
2178 | { | |
b5d57fc8 | 2179 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
93b13be8 BP |
2180 | struct tc_queue *queue; |
2181 | ||
b5d57fc8 | 2182 | HMAP_FOR_EACH_IN_BUCKET (queue, hmap_node, hash, &netdev->tc->queues) { |
93b13be8 BP |
2183 | if (queue->queue_id == queue_id) { |
2184 | return queue; | |
2185 | } | |
2186 | } | |
2187 | return NULL; | |
2188 | } | |
2189 | ||
2190 | static struct tc_queue * | |
2191 | tc_find_queue(const struct netdev *netdev, unsigned int queue_id) | |
2192 | { | |
2193 | return tc_find_queue__(netdev, queue_id, hash_int(queue_id, 0)); | |
2194 | } | |
2195 | ||
c1c9c9c4 BP |
2196 | static int |
2197 | netdev_linux_get_qos_capabilities(const struct netdev *netdev OVS_UNUSED, | |
2198 | const char *type, | |
2199 | struct netdev_qos_capabilities *caps) | |
2200 | { | |
2201 | const struct tc_ops *ops = tc_lookup_ovs_name(type); | |
2202 | if (!ops) { | |
2203 | return EOPNOTSUPP; | |
2204 | } | |
2205 | caps->n_queues = ops->n_queues; | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | static int | |
b5d57fc8 | 2210 | netdev_linux_get_qos(const struct netdev *netdev_, |
79f1cbe9 | 2211 | const char **typep, struct smap *details) |
c1c9c9c4 | 2212 | { |
b5d57fc8 | 2213 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2214 | int error; |
2215 | ||
86383816 | 2216 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2217 | error = tc_query_qdisc(netdev_); |
86383816 BP |
2218 | if (!error) { |
2219 | *typep = netdev->tc->ops->ovs_name; | |
2220 | error = (netdev->tc->ops->qdisc_get | |
2221 | ? netdev->tc->ops->qdisc_get(netdev_, details) | |
2222 | : 0); | |
c1c9c9c4 | 2223 | } |
86383816 | 2224 | ovs_mutex_unlock(&netdev->mutex); |
c1c9c9c4 | 2225 | |
86383816 | 2226 | return error; |
c1c9c9c4 BP |
2227 | } |
2228 | ||
2229 | static int | |
b5d57fc8 | 2230 | netdev_linux_set_qos(struct netdev *netdev_, |
79f1cbe9 | 2231 | const char *type, const struct smap *details) |
c1c9c9c4 | 2232 | { |
b5d57fc8 | 2233 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2234 | const struct tc_ops *new_ops; |
2235 | int error; | |
2236 | ||
2237 | new_ops = tc_lookup_ovs_name(type); | |
2238 | if (!new_ops || !new_ops->tc_install) { | |
2239 | return EOPNOTSUPP; | |
2240 | } | |
2241 | ||
6cf888b8 BS |
2242 | if (new_ops == &tc_ops_noop) { |
2243 | return new_ops->tc_install(netdev_, details); | |
2244 | } | |
2245 | ||
86383816 | 2246 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2247 | error = tc_query_qdisc(netdev_); |
c1c9c9c4 | 2248 | if (error) { |
86383816 | 2249 | goto exit; |
c1c9c9c4 BP |
2250 | } |
2251 | ||
b5d57fc8 | 2252 | if (new_ops == netdev->tc->ops) { |
86383816 | 2253 | error = new_ops->qdisc_set ? new_ops->qdisc_set(netdev_, details) : 0; |
c1c9c9c4 BP |
2254 | } else { |
2255 | /* Delete existing qdisc. */ | |
b5d57fc8 | 2256 | error = tc_del_qdisc(netdev_); |
c1c9c9c4 | 2257 | if (error) { |
86383816 | 2258 | goto exit; |
c1c9c9c4 | 2259 | } |
b5d57fc8 | 2260 | ovs_assert(netdev->tc == NULL); |
c1c9c9c4 BP |
2261 | |
2262 | /* Install new qdisc. */ | |
b5d57fc8 BP |
2263 | error = new_ops->tc_install(netdev_, details); |
2264 | ovs_assert((error == 0) == (netdev->tc != NULL)); | |
c1c9c9c4 | 2265 | } |
86383816 BP |
2266 | |
2267 | exit: | |
2268 | ovs_mutex_unlock(&netdev->mutex); | |
2269 | return error; | |
c1c9c9c4 BP |
2270 | } |
2271 | ||
2272 | static int | |
b5d57fc8 | 2273 | netdev_linux_get_queue(const struct netdev *netdev_, |
79f1cbe9 | 2274 | unsigned int queue_id, struct smap *details) |
c1c9c9c4 | 2275 | { |
b5d57fc8 | 2276 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2277 | int error; |
2278 | ||
86383816 | 2279 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2280 | error = tc_query_qdisc(netdev_); |
86383816 | 2281 | if (!error) { |
b5d57fc8 | 2282 | struct tc_queue *queue = tc_find_queue(netdev_, queue_id); |
86383816 | 2283 | error = (queue |
b5d57fc8 | 2284 | ? netdev->tc->ops->class_get(netdev_, queue, details) |
93b13be8 | 2285 | : ENOENT); |
c1c9c9c4 | 2286 | } |
86383816 BP |
2287 | ovs_mutex_unlock(&netdev->mutex); |
2288 | ||
2289 | return error; | |
c1c9c9c4 BP |
2290 | } |
2291 | ||
2292 | static int | |
b5d57fc8 | 2293 | netdev_linux_set_queue(struct netdev *netdev_, |
79f1cbe9 | 2294 | unsigned int queue_id, const struct smap *details) |
c1c9c9c4 | 2295 | { |
b5d57fc8 | 2296 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2297 | int error; |
2298 | ||
86383816 | 2299 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2300 | error = tc_query_qdisc(netdev_); |
86383816 BP |
2301 | if (!error) { |
2302 | error = (queue_id < netdev->tc->ops->n_queues | |
2303 | && netdev->tc->ops->class_set | |
2304 | ? netdev->tc->ops->class_set(netdev_, queue_id, details) | |
2305 | : EINVAL); | |
c1c9c9c4 | 2306 | } |
86383816 | 2307 | ovs_mutex_unlock(&netdev->mutex); |
c1c9c9c4 | 2308 | |
86383816 | 2309 | return error; |
c1c9c9c4 BP |
2310 | } |
2311 | ||
2312 | static int | |
b5d57fc8 | 2313 | netdev_linux_delete_queue(struct netdev *netdev_, unsigned int queue_id) |
c1c9c9c4 | 2314 | { |
b5d57fc8 | 2315 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2316 | int error; |
2317 | ||
86383816 | 2318 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2319 | error = tc_query_qdisc(netdev_); |
86383816 BP |
2320 | if (!error) { |
2321 | if (netdev->tc->ops->class_delete) { | |
2322 | struct tc_queue *queue = tc_find_queue(netdev_, queue_id); | |
2323 | error = (queue | |
2324 | ? netdev->tc->ops->class_delete(netdev_, queue) | |
2325 | : ENOENT); | |
2326 | } else { | |
2327 | error = EINVAL; | |
2328 | } | |
c1c9c9c4 | 2329 | } |
86383816 BP |
2330 | ovs_mutex_unlock(&netdev->mutex); |
2331 | ||
2332 | return error; | |
c1c9c9c4 BP |
2333 | } |
2334 | ||
2335 | static int | |
b5d57fc8 | 2336 | netdev_linux_get_queue_stats(const struct netdev *netdev_, |
c1c9c9c4 BP |
2337 | unsigned int queue_id, |
2338 | struct netdev_queue_stats *stats) | |
2339 | { | |
b5d57fc8 | 2340 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2341 | int error; |
2342 | ||
86383816 | 2343 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2344 | error = tc_query_qdisc(netdev_); |
86383816 BP |
2345 | if (!error) { |
2346 | if (netdev->tc->ops->class_get_stats) { | |
2347 | const struct tc_queue *queue = tc_find_queue(netdev_, queue_id); | |
2348 | if (queue) { | |
2349 | stats->created = queue->created; | |
2350 | error = netdev->tc->ops->class_get_stats(netdev_, queue, | |
2351 | stats); | |
2352 | } else { | |
2353 | error = ENOENT; | |
2354 | } | |
2355 | } else { | |
2356 | error = EOPNOTSUPP; | |
6dc34a0d | 2357 | } |
c1c9c9c4 | 2358 | } |
86383816 BP |
2359 | ovs_mutex_unlock(&netdev->mutex); |
2360 | ||
2361 | return error; | |
c1c9c9c4 BP |
2362 | } |
2363 | ||
d57695d7 JS |
2364 | struct queue_dump_state { |
2365 | struct nl_dump dump; | |
2366 | struct ofpbuf buf; | |
2367 | }; | |
2368 | ||
23a98ffe | 2369 | static bool |
d57695d7 | 2370 | start_queue_dump(const struct netdev *netdev, struct queue_dump_state *state) |
c1c9c9c4 BP |
2371 | { |
2372 | struct ofpbuf request; | |
2373 | struct tcmsg *tcmsg; | |
2374 | ||
2375 | tcmsg = tc_make_request(netdev, RTM_GETTCLASS, 0, &request); | |
23a98ffe BP |
2376 | if (!tcmsg) { |
2377 | return false; | |
2378 | } | |
3c4de644 | 2379 | tcmsg->tcm_parent = 0; |
d57695d7 | 2380 | nl_dump_start(&state->dump, NETLINK_ROUTE, &request); |
c1c9c9c4 | 2381 | ofpbuf_uninit(&request); |
d57695d7 JS |
2382 | |
2383 | ofpbuf_init(&state->buf, NL_DUMP_BUFSIZE); | |
23a98ffe | 2384 | return true; |
c1c9c9c4 BP |
2385 | } |
2386 | ||
d57695d7 JS |
2387 | static int |
2388 | finish_queue_dump(struct queue_dump_state *state) | |
2389 | { | |
2390 | ofpbuf_uninit(&state->buf); | |
2391 | return nl_dump_done(&state->dump); | |
2392 | } | |
2393 | ||
89454bf4 BP |
2394 | struct netdev_linux_queue_state { |
2395 | unsigned int *queues; | |
2396 | size_t cur_queue; | |
2397 | size_t n_queues; | |
2398 | }; | |
2399 | ||
c1c9c9c4 | 2400 | static int |
89454bf4 | 2401 | netdev_linux_queue_dump_start(const struct netdev *netdev_, void **statep) |
c1c9c9c4 | 2402 | { |
89454bf4 | 2403 | const struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2404 | int error; |
2405 | ||
86383816 | 2406 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2407 | error = tc_query_qdisc(netdev_); |
86383816 BP |
2408 | if (!error) { |
2409 | if (netdev->tc->ops->class_get) { | |
89454bf4 BP |
2410 | struct netdev_linux_queue_state *state; |
2411 | struct tc_queue *queue; | |
2412 | size_t i; | |
2413 | ||
2414 | *statep = state = xmalloc(sizeof *state); | |
2415 | state->n_queues = hmap_count(&netdev->tc->queues); | |
2416 | state->cur_queue = 0; | |
2417 | state->queues = xmalloc(state->n_queues * sizeof *state->queues); | |
2418 | ||
2419 | i = 0; | |
2420 | HMAP_FOR_EACH (queue, hmap_node, &netdev->tc->queues) { | |
2421 | state->queues[i++] = queue->queue_id; | |
86383816 | 2422 | } |
c1c9c9c4 | 2423 | } else { |
86383816 | 2424 | error = EOPNOTSUPP; |
c1c9c9c4 BP |
2425 | } |
2426 | } | |
86383816 | 2427 | ovs_mutex_unlock(&netdev->mutex); |
c1c9c9c4 | 2428 | |
86383816 | 2429 | return error; |
c1c9c9c4 BP |
2430 | } |
2431 | ||
89454bf4 BP |
2432 | static int |
2433 | netdev_linux_queue_dump_next(const struct netdev *netdev_, void *state_, | |
2434 | unsigned int *queue_idp, struct smap *details) | |
2435 | { | |
2436 | const struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
2437 | struct netdev_linux_queue_state *state = state_; | |
2438 | int error = EOF; | |
2439 | ||
2440 | ovs_mutex_lock(&netdev->mutex); | |
2441 | while (state->cur_queue < state->n_queues) { | |
2442 | unsigned int queue_id = state->queues[state->cur_queue++]; | |
2443 | struct tc_queue *queue = tc_find_queue(netdev_, queue_id); | |
2444 | ||
2445 | if (queue) { | |
2446 | *queue_idp = queue_id; | |
2447 | error = netdev->tc->ops->class_get(netdev_, queue, details); | |
2448 | break; | |
2449 | } | |
2450 | } | |
2451 | ovs_mutex_unlock(&netdev->mutex); | |
2452 | ||
2453 | return error; | |
2454 | } | |
2455 | ||
2456 | static int | |
2457 | netdev_linux_queue_dump_done(const struct netdev *netdev OVS_UNUSED, | |
2458 | void *state_) | |
2459 | { | |
2460 | struct netdev_linux_queue_state *state = state_; | |
2461 | ||
2462 | free(state->queues); | |
2463 | free(state); | |
2464 | return 0; | |
2465 | } | |
2466 | ||
c1c9c9c4 | 2467 | static int |
b5d57fc8 | 2468 | netdev_linux_dump_queue_stats(const struct netdev *netdev_, |
c1c9c9c4 BP |
2469 | netdev_dump_queue_stats_cb *cb, void *aux) |
2470 | { | |
b5d57fc8 | 2471 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
2472 | int error; |
2473 | ||
86383816 | 2474 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 | 2475 | error = tc_query_qdisc(netdev_); |
86383816 | 2476 | if (!error) { |
d57695d7 | 2477 | struct queue_dump_state state; |
c1c9c9c4 | 2478 | |
86383816 BP |
2479 | if (!netdev->tc->ops->class_dump_stats) { |
2480 | error = EOPNOTSUPP; | |
d57695d7 | 2481 | } else if (!start_queue_dump(netdev_, &state)) { |
86383816 BP |
2482 | error = ENODEV; |
2483 | } else { | |
2484 | struct ofpbuf msg; | |
2485 | int retval; | |
2486 | ||
d57695d7 | 2487 | while (nl_dump_next(&state.dump, &msg, &state.buf)) { |
86383816 BP |
2488 | retval = netdev->tc->ops->class_dump_stats(netdev_, &msg, |
2489 | cb, aux); | |
2490 | if (retval) { | |
2491 | error = retval; | |
2492 | } | |
2493 | } | |
2494 | ||
d57695d7 | 2495 | retval = finish_queue_dump(&state); |
86383816 BP |
2496 | if (retval) { |
2497 | error = retval; | |
2498 | } | |
c1c9c9c4 BP |
2499 | } |
2500 | } | |
86383816 | 2501 | ovs_mutex_unlock(&netdev->mutex); |
c1c9c9c4 | 2502 | |
86383816 | 2503 | return error; |
c1c9c9c4 BP |
2504 | } |
2505 | ||
8b61709d | 2506 | static int |
f1acd62b BP |
2507 | netdev_linux_set_in4(struct netdev *netdev_, struct in_addr address, |
2508 | struct in_addr netmask) | |
8b61709d | 2509 | { |
b5d57fc8 | 2510 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
8b61709d BP |
2511 | int error; |
2512 | ||
86383816 | 2513 | ovs_mutex_lock(&netdev->mutex); |
f1acd62b | 2514 | error = do_set_addr(netdev_, SIOCSIFADDR, "SIOCSIFADDR", address); |
8b61709d | 2515 | if (!error) { |
f1acd62b | 2516 | if (address.s_addr != INADDR_ANY) { |
8b61709d | 2517 | error = do_set_addr(netdev_, SIOCSIFNETMASK, |
f1acd62b | 2518 | "SIOCSIFNETMASK", netmask); |
8b61709d BP |
2519 | } |
2520 | } | |
49af9a3d | 2521 | |
86383816 BP |
2522 | ovs_mutex_unlock(&netdev->mutex); |
2523 | ||
8b61709d BP |
2524 | return error; |
2525 | } | |
2526 | ||
7df6932e AW |
2527 | /* If 'netdev' has an assigned IPv6 address, sets '*in6' to that address. |
2528 | * Otherwise, sets '*in6' to 'in6addr_any' and returns the corresponding | |
2529 | * error. */ | |
8b61709d | 2530 | static int |
a8704b50 PS |
2531 | netdev_linux_get_addr_list(const struct netdev *netdev_, |
2532 | struct in6_addr **addr, struct in6_addr **mask, int *n_cnt) | |
8b61709d | 2533 | { |
b5d57fc8 | 2534 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
7df6932e | 2535 | int error; |
86383816 BP |
2536 | |
2537 | ovs_mutex_lock(&netdev->mutex); | |
a8704b50 | 2538 | error = netdev_get_addrs(netdev_get_name(netdev_), addr, mask, n_cnt); |
86383816 BP |
2539 | ovs_mutex_unlock(&netdev->mutex); |
2540 | ||
7df6932e | 2541 | return error; |
8b61709d BP |
2542 | } |
2543 | ||
2544 | static void | |
2545 | make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr) | |
2546 | { | |
2547 | struct sockaddr_in sin; | |
2548 | memset(&sin, 0, sizeof sin); | |
2549 | sin.sin_family = AF_INET; | |
2550 | sin.sin_addr = addr; | |
2551 | sin.sin_port = 0; | |
2552 | ||
2553 | memset(sa, 0, sizeof *sa); | |
2554 | memcpy(sa, &sin, sizeof sin); | |
2555 | } | |
2556 | ||
2557 | static int | |
2558 | do_set_addr(struct netdev *netdev, | |
2559 | int ioctl_nr, const char *ioctl_name, struct in_addr addr) | |
2560 | { | |
2561 | struct ifreq ifr; | |
149f577a | 2562 | |
259e0b1a BP |
2563 | make_in4_sockaddr(&ifr.ifr_addr, addr); |
2564 | return af_inet_ifreq_ioctl(netdev_get_name(netdev), &ifr, ioctl_nr, | |
2565 | ioctl_name); | |
8b61709d BP |
2566 | } |
2567 | ||
2568 | /* Adds 'router' as a default IP gateway. */ | |
2569 | static int | |
67a4917b | 2570 | netdev_linux_add_router(struct netdev *netdev OVS_UNUSED, struct in_addr router) |
8b61709d BP |
2571 | { |
2572 | struct in_addr any = { INADDR_ANY }; | |
2573 | struct rtentry rt; | |
2574 | int error; | |
2575 | ||
2576 | memset(&rt, 0, sizeof rt); | |
2577 | make_in4_sockaddr(&rt.rt_dst, any); | |
2578 | make_in4_sockaddr(&rt.rt_gateway, router); | |
2579 | make_in4_sockaddr(&rt.rt_genmask, any); | |
2580 | rt.rt_flags = RTF_UP | RTF_GATEWAY; | |
259e0b1a | 2581 | error = af_inet_ioctl(SIOCADDRT, &rt); |
8b61709d | 2582 | if (error) { |
10a89ef0 | 2583 | VLOG_WARN("ioctl(SIOCADDRT): %s", ovs_strerror(error)); |
8b61709d BP |
2584 | } |
2585 | return error; | |
2586 | } | |
2587 | ||
f1acd62b BP |
2588 | static int |
2589 | netdev_linux_get_next_hop(const struct in_addr *host, struct in_addr *next_hop, | |
2590 | char **netdev_name) | |
2591 | { | |
2592 | static const char fn[] = "/proc/net/route"; | |
2593 | FILE *stream; | |
2594 | char line[256]; | |
2595 | int ln; | |
2596 | ||
2597 | *netdev_name = NULL; | |
2598 | stream = fopen(fn, "r"); | |
2599 | if (stream == NULL) { | |
10a89ef0 | 2600 | VLOG_WARN_RL(&rl, "%s: open failed: %s", fn, ovs_strerror(errno)); |
f1acd62b BP |
2601 | return errno; |
2602 | } | |
2603 | ||
2604 | ln = 0; | |
2605 | while (fgets(line, sizeof line, stream)) { | |
2606 | if (++ln >= 2) { | |
2607 | char iface[17]; | |
dbba996b | 2608 | ovs_be32 dest, gateway, mask; |
f1acd62b BP |
2609 | int refcnt, metric, mtu; |
2610 | unsigned int flags, use, window, irtt; | |
2611 | ||
c2c28dfd BP |
2612 | if (!ovs_scan(line, |
2613 | "%16s %"SCNx32" %"SCNx32" %04X %d %u %d %"SCNx32 | |
2614 | " %d %u %u\n", | |
2615 | iface, &dest, &gateway, &flags, &refcnt, | |
2616 | &use, &metric, &mask, &mtu, &window, &irtt)) { | |
d295e8e9 | 2617 | VLOG_WARN_RL(&rl, "%s: could not parse line %d: %s", |
f1acd62b BP |
2618 | fn, ln, line); |
2619 | continue; | |
2620 | } | |
2621 | if (!(flags & RTF_UP)) { | |
2622 | /* Skip routes that aren't up. */ | |
2623 | continue; | |
2624 | } | |
2625 | ||
2626 | /* The output of 'dest', 'mask', and 'gateway' were given in | |
d295e8e9 | 2627 | * network byte order, so we don't need need any endian |
f1acd62b BP |
2628 | * conversions here. */ |
2629 | if ((dest & mask) == (host->s_addr & mask)) { | |
2630 | if (!gateway) { | |
2631 | /* The host is directly reachable. */ | |
2632 | next_hop->s_addr = 0; | |
2633 | } else { | |
2634 | /* To reach the host, we must go through a gateway. */ | |
2635 | next_hop->s_addr = gateway; | |
2636 | } | |
2637 | *netdev_name = xstrdup(iface); | |
2638 | fclose(stream); | |
2639 | return 0; | |
2640 | } | |
2641 | } | |
2642 | } | |
2643 | ||
2644 | fclose(stream); | |
2645 | return ENXIO; | |
2646 | } | |
2647 | ||
e210037e | 2648 | static int |
b5d57fc8 | 2649 | netdev_linux_get_status(const struct netdev *netdev_, struct smap *smap) |
e210037e | 2650 | { |
b5d57fc8 | 2651 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
275707c3 EJ |
2652 | int error = 0; |
2653 | ||
86383816 | 2654 | ovs_mutex_lock(&netdev->mutex); |
b5d57fc8 BP |
2655 | if (!(netdev->cache_valid & VALID_DRVINFO)) { |
2656 | struct ethtool_cmd *cmd = (struct ethtool_cmd *) &netdev->drvinfo; | |
275707c3 EJ |
2657 | |
2658 | COVERAGE_INC(netdev_get_ethtool); | |
b5d57fc8 BP |
2659 | memset(&netdev->drvinfo, 0, sizeof netdev->drvinfo); |
2660 | error = netdev_linux_do_ethtool(netdev->up.name, | |
275707c3 EJ |
2661 | cmd, |
2662 | ETHTOOL_GDRVINFO, | |
2663 | "ETHTOOL_GDRVINFO"); | |
2664 | if (!error) { | |
b5d57fc8 | 2665 | netdev->cache_valid |= VALID_DRVINFO; |
275707c3 EJ |
2666 | } |
2667 | } | |
e210037e | 2668 | |
e210037e | 2669 | if (!error) { |
b5d57fc8 BP |
2670 | smap_add(smap, "driver_name", netdev->drvinfo.driver); |
2671 | smap_add(smap, "driver_version", netdev->drvinfo.version); | |
2672 | smap_add(smap, "firmware_version", netdev->drvinfo.fw_version); | |
e210037e | 2673 | } |
86383816 BP |
2674 | ovs_mutex_unlock(&netdev->mutex); |
2675 | ||
e210037e AE |
2676 | return error; |
2677 | } | |
2678 | ||
4f925bd3 | 2679 | static int |
275707c3 EJ |
2680 | netdev_internal_get_status(const struct netdev *netdev OVS_UNUSED, |
2681 | struct smap *smap) | |
4f925bd3 | 2682 | { |
79f1cbe9 | 2683 | smap_add(smap, "driver_name", "openvswitch"); |
4f925bd3 PS |
2684 | return 0; |
2685 | } | |
2686 | ||
8b61709d BP |
2687 | /* Looks up the ARP table entry for 'ip' on 'netdev'. If one exists and can be |
2688 | * successfully retrieved, it stores the corresponding MAC address in 'mac' and | |
2689 | * returns 0. Otherwise, it returns a positive errno value; in particular, | |
2690 | * ENXIO indicates that there is not ARP table entry for 'ip' on 'netdev'. */ | |
2691 | static int | |
2692 | netdev_linux_arp_lookup(const struct netdev *netdev, | |
74ff3298 | 2693 | ovs_be32 ip, struct eth_addr *mac) |
8b61709d BP |
2694 | { |
2695 | struct arpreq r; | |
c100e025 | 2696 | struct sockaddr_in sin; |
8b61709d BP |
2697 | int retval; |
2698 | ||
2699 | memset(&r, 0, sizeof r); | |
f2cc621b | 2700 | memset(&sin, 0, sizeof sin); |
c100e025 BP |
2701 | sin.sin_family = AF_INET; |
2702 | sin.sin_addr.s_addr = ip; | |
2703 | sin.sin_port = 0; | |
2704 | memcpy(&r.arp_pa, &sin, sizeof sin); | |
8b61709d BP |
2705 | r.arp_ha.sa_family = ARPHRD_ETHER; |
2706 | r.arp_flags = 0; | |
71d7c22f | 2707 | ovs_strzcpy(r.arp_dev, netdev_get_name(netdev), sizeof r.arp_dev); |
8b61709d | 2708 | COVERAGE_INC(netdev_arp_lookup); |
259e0b1a | 2709 | retval = af_inet_ioctl(SIOCGARP, &r); |
8b61709d BP |
2710 | if (!retval) { |
2711 | memcpy(mac, r.arp_ha.sa_data, ETH_ADDR_LEN); | |
2712 | } else if (retval != ENXIO) { | |
2713 | VLOG_WARN_RL(&rl, "%s: could not look up ARP entry for "IP_FMT": %s", | |
10a89ef0 BP |
2714 | netdev_get_name(netdev), IP_ARGS(ip), |
2715 | ovs_strerror(retval)); | |
8b61709d BP |
2716 | } |
2717 | return retval; | |
2718 | } | |
2719 | ||
2720 | static int | |
2721 | nd_to_iff_flags(enum netdev_flags nd) | |
2722 | { | |
2723 | int iff = 0; | |
2724 | if (nd & NETDEV_UP) { | |
2725 | iff |= IFF_UP; | |
2726 | } | |
2727 | if (nd & NETDEV_PROMISC) { | |
2728 | iff |= IFF_PROMISC; | |
2729 | } | |
7ba19d41 AC |
2730 | if (nd & NETDEV_LOOPBACK) { |
2731 | iff |= IFF_LOOPBACK; | |
2732 | } | |
8b61709d BP |
2733 | return iff; |
2734 | } | |
2735 | ||
2736 | static int | |
2737 | iff_to_nd_flags(int iff) | |
2738 | { | |
2739 | enum netdev_flags nd = 0; | |
2740 | if (iff & IFF_UP) { | |
2741 | nd |= NETDEV_UP; | |
2742 | } | |
2743 | if (iff & IFF_PROMISC) { | |
2744 | nd |= NETDEV_PROMISC; | |
2745 | } | |
7ba19d41 AC |
2746 | if (iff & IFF_LOOPBACK) { |
2747 | nd |= NETDEV_LOOPBACK; | |
2748 | } | |
8b61709d BP |
2749 | return nd; |
2750 | } | |
2751 | ||
2752 | static int | |
4f9f3f21 BP |
2753 | update_flags(struct netdev_linux *netdev, enum netdev_flags off, |
2754 | enum netdev_flags on, enum netdev_flags *old_flagsp) | |
2755 | OVS_REQUIRES(netdev->mutex) | |
8b61709d BP |
2756 | { |
2757 | int old_flags, new_flags; | |
c37d4da4 EJ |
2758 | int error = 0; |
2759 | ||
b5d57fc8 | 2760 | old_flags = netdev->ifi_flags; |
c37d4da4 EJ |
2761 | *old_flagsp = iff_to_nd_flags(old_flags); |
2762 | new_flags = (old_flags & ~nd_to_iff_flags(off)) | nd_to_iff_flags(on); | |
2763 | if (new_flags != old_flags) { | |
4f9f3f21 BP |
2764 | error = set_flags(netdev_get_name(&netdev->up), new_flags); |
2765 | get_flags(&netdev->up, &netdev->ifi_flags); | |
8b61709d | 2766 | } |
4f9f3f21 BP |
2767 | |
2768 | return error; | |
2769 | } | |
2770 | ||
2771 | static int | |
2772 | netdev_linux_update_flags(struct netdev *netdev_, enum netdev_flags off, | |
2773 | enum netdev_flags on, enum netdev_flags *old_flagsp) | |
2774 | { | |
2775 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
2776 | int error; | |
2777 | ||
2778 | ovs_mutex_lock(&netdev->mutex); | |
2779 | error = update_flags(netdev, off, on, old_flagsp); | |
86383816 BP |
2780 | ovs_mutex_unlock(&netdev->mutex); |
2781 | ||
8b61709d BP |
2782 | return error; |
2783 | } | |
2784 | ||
2f9dd77f | 2785 | #define NETDEV_LINUX_CLASS(NAME, CONSTRUCT, GET_STATS, \ |
51f87458 | 2786 | GET_FEATURES, GET_STATUS) \ |
c3827f61 BP |
2787 | { \ |
2788 | NAME, \ | |
118c77b1 | 2789 | false, /* is_pmd */ \ |
c3827f61 | 2790 | \ |
259e0b1a | 2791 | NULL, \ |
c3827f61 BP |
2792 | netdev_linux_run, \ |
2793 | netdev_linux_wait, \ | |
2794 | \ | |
9dc63482 BP |
2795 | netdev_linux_alloc, \ |
2796 | CONSTRUCT, \ | |
2797 | netdev_linux_destruct, \ | |
2798 | netdev_linux_dealloc, \ | |
de5cdb90 | 2799 | NULL, /* get_config */ \ |
6d9e6eb4 | 2800 | NULL, /* set_config */ \ |
f431bf7d | 2801 | NULL, /* get_tunnel_config */ \ |
a36de779 PS |
2802 | NULL, /* build header */ \ |
2803 | NULL, /* push header */ \ | |
2804 | NULL, /* pop header */ \ | |
7dec44fe | 2805 | NULL, /* get_numa_id */ \ |
050c60bf | 2806 | NULL, /* set_tx_multiq */ \ |
c3827f61 | 2807 | \ |
c3827f61 BP |
2808 | netdev_linux_send, \ |
2809 | netdev_linux_send_wait, \ | |
2810 | \ | |
2811 | netdev_linux_set_etheraddr, \ | |
2812 | netdev_linux_get_etheraddr, \ | |
2813 | netdev_linux_get_mtu, \ | |
9b020780 | 2814 | netdev_linux_set_mtu, \ |
c3827f61 BP |
2815 | netdev_linux_get_ifindex, \ |
2816 | netdev_linux_get_carrier, \ | |
65c3058c | 2817 | netdev_linux_get_carrier_resets, \ |
1670c579 | 2818 | netdev_linux_set_miimon_interval, \ |
f613a0d7 | 2819 | GET_STATS, \ |
c3827f61 | 2820 | \ |
51f87458 | 2821 | GET_FEATURES, \ |
c3827f61 | 2822 | netdev_linux_set_advertisements, \ |
c3827f61 BP |
2823 | \ |
2824 | netdev_linux_set_policing, \ | |
2825 | netdev_linux_get_qos_types, \ | |
2826 | netdev_linux_get_qos_capabilities, \ | |
2827 | netdev_linux_get_qos, \ | |
2828 | netdev_linux_set_qos, \ | |
2829 | netdev_linux_get_queue, \ | |
2830 | netdev_linux_set_queue, \ | |
2831 | netdev_linux_delete_queue, \ | |
2832 | netdev_linux_get_queue_stats, \ | |
89454bf4 BP |
2833 | netdev_linux_queue_dump_start, \ |
2834 | netdev_linux_queue_dump_next, \ | |
2835 | netdev_linux_queue_dump_done, \ | |
c3827f61 BP |
2836 | netdev_linux_dump_queue_stats, \ |
2837 | \ | |
c3827f61 | 2838 | netdev_linux_set_in4, \ |
a8704b50 | 2839 | netdev_linux_get_addr_list, \ |
c3827f61 BP |
2840 | netdev_linux_add_router, \ |
2841 | netdev_linux_get_next_hop, \ | |
4f925bd3 | 2842 | GET_STATUS, \ |
c3827f61 BP |
2843 | netdev_linux_arp_lookup, \ |
2844 | \ | |
2845 | netdev_linux_update_flags, \ | |
790fb3b7 | 2846 | NULL, /* reconfigure */ \ |
c3827f61 | 2847 | \ |
f7791740 PS |
2848 | netdev_linux_rxq_alloc, \ |
2849 | netdev_linux_rxq_construct, \ | |
2850 | netdev_linux_rxq_destruct, \ | |
2851 | netdev_linux_rxq_dealloc, \ | |
2852 | netdev_linux_rxq_recv, \ | |
2853 | netdev_linux_rxq_wait, \ | |
2854 | netdev_linux_rxq_drain, \ | |
c3827f61 BP |
2855 | } |
2856 | ||
2857 | const struct netdev_class netdev_linux_class = | |
2858 | NETDEV_LINUX_CLASS( | |
2859 | "system", | |
9dc63482 | 2860 | netdev_linux_construct, |
f613a0d7 | 2861 | netdev_linux_get_stats, |
51f87458 | 2862 | netdev_linux_get_features, |
275707c3 | 2863 | netdev_linux_get_status); |
c3827f61 BP |
2864 | |
2865 | const struct netdev_class netdev_tap_class = | |
2866 | NETDEV_LINUX_CLASS( | |
2867 | "tap", | |
9dc63482 | 2868 | netdev_linux_construct_tap, |
bba1e6f3 | 2869 | netdev_tap_get_stats, |
51f87458 | 2870 | netdev_linux_get_features, |
275707c3 | 2871 | netdev_linux_get_status); |
c3827f61 BP |
2872 | |
2873 | const struct netdev_class netdev_internal_class = | |
2874 | NETDEV_LINUX_CLASS( | |
2875 | "internal", | |
9dc63482 | 2876 | netdev_linux_construct, |
bba1e6f3 | 2877 | netdev_internal_get_stats, |
51f87458 | 2878 | NULL, /* get_features */ |
275707c3 | 2879 | netdev_internal_get_status); |
8b61709d | 2880 | \f |
677d9158 JV |
2881 | |
2882 | #define CODEL_N_QUEUES 0x0000 | |
2883 | ||
2f4298ce BP |
2884 | /* In sufficiently new kernel headers these are defined as enums in |
2885 | * <linux/pkt_sched.h>. Define them here as macros to help out with older | |
2886 | * kernels. (This overrides any enum definition in the header file but that's | |
2887 | * harmless.) */ | |
2888 | #define TCA_CODEL_TARGET 1 | |
2889 | #define TCA_CODEL_LIMIT 2 | |
2890 | #define TCA_CODEL_INTERVAL 3 | |
2891 | ||
677d9158 JV |
2892 | struct codel { |
2893 | struct tc tc; | |
2894 | uint32_t target; | |
2895 | uint32_t limit; | |
2896 | uint32_t interval; | |
2897 | }; | |
2898 | ||
2899 | static struct codel * | |
2900 | codel_get__(const struct netdev *netdev_) | |
2901 | { | |
2902 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
2903 | return CONTAINER_OF(netdev->tc, struct codel, tc); | |
2904 | } | |
2905 | ||
2906 | static void | |
2907 | codel_install__(struct netdev *netdev_, uint32_t target, uint32_t limit, | |
2908 | uint32_t interval) | |
2909 | { | |
2910 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
2911 | struct codel *codel; | |
2912 | ||
2913 | codel = xmalloc(sizeof *codel); | |
2914 | tc_init(&codel->tc, &tc_ops_codel); | |
2915 | codel->target = target; | |
2916 | codel->limit = limit; | |
2917 | codel->interval = interval; | |
2918 | ||
2919 | netdev->tc = &codel->tc; | |
2920 | } | |
2921 | ||
2922 | static int | |
2923 | codel_setup_qdisc__(struct netdev *netdev, uint32_t target, uint32_t limit, | |
2924 | uint32_t interval) | |
2925 | { | |
2926 | size_t opt_offset; | |
2927 | struct ofpbuf request; | |
2928 | struct tcmsg *tcmsg; | |
2929 | uint32_t otarget, olimit, ointerval; | |
2930 | int error; | |
2931 | ||
2932 | tc_del_qdisc(netdev); | |
2933 | ||
2934 | tcmsg = tc_make_request(netdev, RTM_NEWQDISC, | |
2935 | NLM_F_EXCL | NLM_F_CREATE, &request); | |
2936 | if (!tcmsg) { | |
2937 | return ENODEV; | |
2938 | } | |
2939 | tcmsg->tcm_handle = tc_make_handle(1, 0); | |
2940 | tcmsg->tcm_parent = TC_H_ROOT; | |
2941 | ||
2942 | otarget = target ? target : 5000; | |
2943 | olimit = limit ? limit : 10240; | |
2944 | ointerval = interval ? interval : 100000; | |
2945 | ||
2946 | nl_msg_put_string(&request, TCA_KIND, "codel"); | |
2947 | opt_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
2948 | nl_msg_put_u32(&request, TCA_CODEL_TARGET, otarget); | |
2949 | nl_msg_put_u32(&request, TCA_CODEL_LIMIT, olimit); | |
2950 | nl_msg_put_u32(&request, TCA_CODEL_INTERVAL, ointerval); | |
2951 | nl_msg_end_nested(&request, opt_offset); | |
2952 | ||
2953 | error = tc_transact(&request, NULL); | |
2954 | if (error) { | |
2955 | VLOG_WARN_RL(&rl, "failed to replace %s qdisc, " | |
2956 | "target %u, limit %u, interval %u error %d(%s)", | |
2957 | netdev_get_name(netdev), | |
2958 | otarget, olimit, ointerval, | |
2959 | error, ovs_strerror(error)); | |
2960 | } | |
2961 | return error; | |
2962 | } | |
2963 | ||
2964 | static void | |
2965 | codel_parse_qdisc_details__(struct netdev *netdev OVS_UNUSED, | |
2966 | const struct smap *details, struct codel *codel) | |
2967 | { | |
13c1637f BP |
2968 | codel->target = smap_get_ullong(details, "target", 0); |
2969 | codel->limit = smap_get_ullong(details, "limit", 0); | |
2970 | codel->interval = smap_get_ullong(details, "interval", 0); | |
677d9158 JV |
2971 | |
2972 | if (!codel->target) { | |
2973 | codel->target = 5000; | |
2974 | } | |
2975 | if (!codel->limit) { | |
2976 | codel->limit = 10240; | |
2977 | } | |
2978 | if (!codel->interval) { | |
2979 | codel->interval = 100000; | |
2980 | } | |
2981 | } | |
2982 | ||
2983 | static int | |
2984 | codel_tc_install(struct netdev *netdev, const struct smap *details) | |
2985 | { | |
2986 | int error; | |
2987 | struct codel codel; | |
2988 | ||
2989 | codel_parse_qdisc_details__(netdev, details, &codel); | |
2990 | error = codel_setup_qdisc__(netdev, codel.target, codel.limit, | |
2991 | codel.interval); | |
2992 | if (!error) { | |
2993 | codel_install__(netdev, codel.target, codel.limit, codel.interval); | |
2994 | } | |
2995 | return error; | |
2996 | } | |
2997 | ||
2998 | static int | |
2999 | codel_parse_tca_options__(struct nlattr *nl_options, struct codel *codel) | |
3000 | { | |
3001 | static const struct nl_policy tca_codel_policy[] = { | |
3002 | [TCA_CODEL_TARGET] = { .type = NL_A_U32 }, | |
3003 | [TCA_CODEL_LIMIT] = { .type = NL_A_U32 }, | |
3004 | [TCA_CODEL_INTERVAL] = { .type = NL_A_U32 } | |
3005 | }; | |
3006 | ||
3007 | struct nlattr *attrs[ARRAY_SIZE(tca_codel_policy)]; | |
3008 | ||
3009 | if (!nl_parse_nested(nl_options, tca_codel_policy, | |
3010 | attrs, ARRAY_SIZE(tca_codel_policy))) { | |
3011 | VLOG_WARN_RL(&rl, "failed to parse CoDel class options"); | |
3012 | return EPROTO; | |
3013 | } | |
3014 | ||
3015 | codel->target = nl_attr_get_u32(attrs[TCA_CODEL_TARGET]); | |
3016 | codel->limit = nl_attr_get_u32(attrs[TCA_CODEL_LIMIT]); | |
3017 | codel->interval = nl_attr_get_u32(attrs[TCA_CODEL_INTERVAL]); | |
3018 | return 0; | |
3019 | } | |
3020 | ||
3021 | static int | |
3022 | codel_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg) | |
3023 | { | |
3024 | struct nlattr *nlattr; | |
3025 | const char * kind; | |
3026 | int error; | |
3027 | struct codel codel; | |
3028 | ||
3029 | error = tc_parse_qdisc(nlmsg, &kind, &nlattr); | |
3030 | if (error != 0) { | |
3031 | return error; | |
3032 | } | |
3033 | ||
3034 | error = codel_parse_tca_options__(nlattr, &codel); | |
3035 | if (error != 0) { | |
3036 | return error; | |
3037 | } | |
3038 | ||
3039 | codel_install__(netdev, codel.target, codel.limit, codel.interval); | |
3040 | return 0; | |
3041 | } | |
3042 | ||
3043 | ||
3044 | static void | |
3045 | codel_tc_destroy(struct tc *tc) | |
3046 | { | |
3047 | struct codel *codel = CONTAINER_OF(tc, struct codel, tc); | |
3048 | tc_destroy(tc); | |
3049 | free(codel); | |
3050 | } | |
3051 | ||
3052 | static int | |
3053 | codel_qdisc_get(const struct netdev *netdev, struct smap *details) | |
3054 | { | |
3055 | const struct codel *codel = codel_get__(netdev); | |
3056 | smap_add_format(details, "target", "%u", codel->target); | |
3057 | smap_add_format(details, "limit", "%u", codel->limit); | |
3058 | smap_add_format(details, "interval", "%u", codel->interval); | |
3059 | return 0; | |
3060 | } | |
3061 | ||
3062 | static int | |
3063 | codel_qdisc_set(struct netdev *netdev, const struct smap *details) | |
3064 | { | |
3065 | struct codel codel; | |
3066 | ||
3067 | codel_parse_qdisc_details__(netdev, details, &codel); | |
3068 | codel_install__(netdev, codel.target, codel.limit, codel.interval); | |
3069 | codel_get__(netdev)->target = codel.target; | |
3070 | codel_get__(netdev)->limit = codel.limit; | |
3071 | codel_get__(netdev)->interval = codel.interval; | |
3072 | return 0; | |
3073 | } | |
3074 | ||
3075 | static const struct tc_ops tc_ops_codel = { | |
3076 | "codel", /* linux_name */ | |
3077 | "linux-codel", /* ovs_name */ | |
3078 | CODEL_N_QUEUES, /* n_queues */ | |
3079 | codel_tc_install, | |
3080 | codel_tc_load, | |
3081 | codel_tc_destroy, | |
3082 | codel_qdisc_get, | |
3083 | codel_qdisc_set, | |
3084 | NULL, | |
3085 | NULL, | |
3086 | NULL, | |
3087 | NULL, | |
3088 | NULL | |
3089 | }; | |
3090 | \f | |
3091 | /* FQ-CoDel traffic control class. */ | |
3092 | ||
3093 | #define FQCODEL_N_QUEUES 0x0000 | |
3094 | ||
2f4298ce BP |
3095 | /* In sufficiently new kernel headers these are defined as enums in |
3096 | * <linux/pkt_sched.h>. Define them here as macros to help out with older | |
3097 | * kernels. (This overrides any enum definition in the header file but that's | |
3098 | * harmless.) */ | |
3099 | #define TCA_FQ_CODEL_TARGET 1 | |
3100 | #define TCA_FQ_CODEL_LIMIT 2 | |
3101 | #define TCA_FQ_CODEL_INTERVAL 3 | |
3102 | #define TCA_FQ_CODEL_ECN 4 | |
3103 | #define TCA_FQ_CODEL_FLOWS 5 | |
3104 | #define TCA_FQ_CODEL_QUANTUM 6 | |
3105 | ||
677d9158 JV |
3106 | struct fqcodel { |
3107 | struct tc tc; | |
3108 | uint32_t target; | |
3109 | uint32_t limit; | |
3110 | uint32_t interval; | |
3111 | uint32_t flows; | |
3112 | uint32_t quantum; | |
3113 | }; | |
3114 | ||
3115 | static struct fqcodel * | |
3116 | fqcodel_get__(const struct netdev *netdev_) | |
3117 | { | |
3118 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
3119 | return CONTAINER_OF(netdev->tc, struct fqcodel, tc); | |
3120 | } | |
3121 | ||
3122 | static void | |
3123 | fqcodel_install__(struct netdev *netdev_, uint32_t target, uint32_t limit, | |
3124 | uint32_t interval, uint32_t flows, uint32_t quantum) | |
3125 | { | |
3126 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
3127 | struct fqcodel *fqcodel; | |
3128 | ||
3129 | fqcodel = xmalloc(sizeof *fqcodel); | |
3130 | tc_init(&fqcodel->tc, &tc_ops_fqcodel); | |
3131 | fqcodel->target = target; | |
3132 | fqcodel->limit = limit; | |
3133 | fqcodel->interval = interval; | |
3134 | fqcodel->flows = flows; | |
3135 | fqcodel->quantum = quantum; | |
3136 | ||
3137 | netdev->tc = &fqcodel->tc; | |
3138 | } | |
3139 | ||
3140 | static int | |
3141 | fqcodel_setup_qdisc__(struct netdev *netdev, uint32_t target, uint32_t limit, | |
3142 | uint32_t interval, uint32_t flows, uint32_t quantum) | |
3143 | { | |
3144 | size_t opt_offset; | |
3145 | struct ofpbuf request; | |
3146 | struct tcmsg *tcmsg; | |
3147 | uint32_t otarget, olimit, ointerval, oflows, oquantum; | |
3148 | int error; | |
3149 | ||
3150 | tc_del_qdisc(netdev); | |
3151 | ||
3152 | tcmsg = tc_make_request(netdev, RTM_NEWQDISC, | |
3153 | NLM_F_EXCL | NLM_F_CREATE, &request); | |
3154 | if (!tcmsg) { | |
3155 | return ENODEV; | |
3156 | } | |
3157 | tcmsg->tcm_handle = tc_make_handle(1, 0); | |
3158 | tcmsg->tcm_parent = TC_H_ROOT; | |
3159 | ||
3160 | otarget = target ? target : 5000; | |
3161 | olimit = limit ? limit : 10240; | |
3162 | ointerval = interval ? interval : 100000; | |
3163 | oflows = flows ? flows : 1024; | |
3164 | oquantum = quantum ? quantum : 1514; /* fq_codel default quantum is 1514 | |
3165 | not mtu */ | |
3166 | ||
3167 | nl_msg_put_string(&request, TCA_KIND, "fq_codel"); | |
3168 | opt_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
3169 | nl_msg_put_u32(&request, TCA_FQ_CODEL_TARGET, otarget); | |
3170 | nl_msg_put_u32(&request, TCA_FQ_CODEL_LIMIT, olimit); | |
3171 | nl_msg_put_u32(&request, TCA_FQ_CODEL_INTERVAL, ointerval); | |
3172 | nl_msg_put_u32(&request, TCA_FQ_CODEL_FLOWS, oflows); | |
3173 | nl_msg_put_u32(&request, TCA_FQ_CODEL_QUANTUM, oquantum); | |
3174 | nl_msg_end_nested(&request, opt_offset); | |
3175 | ||
3176 | error = tc_transact(&request, NULL); | |
3177 | if (error) { | |
3178 | VLOG_WARN_RL(&rl, "failed to replace %s qdisc, " | |
3179 | "target %u, limit %u, interval %u, flows %u, quantum %u error %d(%s)", | |
3180 | netdev_get_name(netdev), | |
3181 | otarget, olimit, ointerval, oflows, oquantum, | |
3182 | error, ovs_strerror(error)); | |
3183 | } | |
3184 | return error; | |
3185 | } | |
3186 | ||
3187 | static void | |
3188 | fqcodel_parse_qdisc_details__(struct netdev *netdev OVS_UNUSED, | |
3189 | const struct smap *details, struct fqcodel *fqcodel) | |
3190 | { | |
13c1637f BP |
3191 | fqcodel->target = smap_get_ullong(details, "target", 0); |
3192 | fqcodel->limit = smap_get_ullong(details, "limit", 0); | |
3193 | fqcodel->interval = smap_get_ullong(details, "interval", 0); | |
3194 | fqcodel->flows = smap_get_ullong(details, "flows", 0); | |
3195 | fqcodel->quantum = smap_get_ullong(details, "quantum", 0); | |
3196 | ||
677d9158 JV |
3197 | if (!fqcodel->target) { |
3198 | fqcodel->target = 5000; | |
3199 | } | |
3200 | if (!fqcodel->limit) { | |
3201 | fqcodel->limit = 10240; | |
3202 | } | |
3203 | if (!fqcodel->interval) { | |
3204 | fqcodel->interval = 1000000; | |
3205 | } | |
3206 | if (!fqcodel->flows) { | |
3207 | fqcodel->flows = 1024; | |
3208 | } | |
3209 | if (!fqcodel->quantum) { | |
3210 | fqcodel->quantum = 1514; | |
3211 | } | |
3212 | } | |
3213 | ||
3214 | static int | |
3215 | fqcodel_tc_install(struct netdev *netdev, const struct smap *details) | |
3216 | { | |
3217 | int error; | |
3218 | struct fqcodel fqcodel; | |
3219 | ||
3220 | fqcodel_parse_qdisc_details__(netdev, details, &fqcodel); | |
3221 | error = fqcodel_setup_qdisc__(netdev, fqcodel.target, fqcodel.limit, | |
3222 | fqcodel.interval, fqcodel.flows, | |
3223 | fqcodel.quantum); | |
3224 | if (!error) { | |
3225 | fqcodel_install__(netdev, fqcodel.target, fqcodel.limit, | |
3226 | fqcodel.interval, fqcodel.flows, fqcodel.quantum); | |
3227 | } | |
3228 | return error; | |
3229 | } | |
3230 | ||
3231 | static int | |
3232 | fqcodel_parse_tca_options__(struct nlattr *nl_options, struct fqcodel *fqcodel) | |
3233 | { | |
3234 | static const struct nl_policy tca_fqcodel_policy[] = { | |
3235 | [TCA_FQ_CODEL_TARGET] = { .type = NL_A_U32 }, | |
3236 | [TCA_FQ_CODEL_LIMIT] = { .type = NL_A_U32 }, | |
3237 | [TCA_FQ_CODEL_INTERVAL] = { .type = NL_A_U32 }, | |
3238 | [TCA_FQ_CODEL_FLOWS] = { .type = NL_A_U32 }, | |
3239 | [TCA_FQ_CODEL_QUANTUM] = { .type = NL_A_U32 } | |
3240 | }; | |
3241 | ||
3242 | struct nlattr *attrs[ARRAY_SIZE(tca_fqcodel_policy)]; | |
3243 | ||
3244 | if (!nl_parse_nested(nl_options, tca_fqcodel_policy, | |
3245 | attrs, ARRAY_SIZE(tca_fqcodel_policy))) { | |
3246 | VLOG_WARN_RL(&rl, "failed to parse FQ_CoDel class options"); | |
3247 | return EPROTO; | |
3248 | } | |
3249 | ||
3250 | fqcodel->target = nl_attr_get_u32(attrs[TCA_FQ_CODEL_TARGET]); | |
3251 | fqcodel->limit = nl_attr_get_u32(attrs[TCA_FQ_CODEL_LIMIT]); | |
3252 | fqcodel->interval =nl_attr_get_u32(attrs[TCA_FQ_CODEL_INTERVAL]); | |
3253 | fqcodel->flows = nl_attr_get_u32(attrs[TCA_FQ_CODEL_FLOWS]); | |
3254 | fqcodel->quantum = nl_attr_get_u32(attrs[TCA_FQ_CODEL_QUANTUM]); | |
3255 | return 0; | |
3256 | } | |
3257 | ||
3258 | static int | |
3259 | fqcodel_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg) | |
3260 | { | |
3261 | struct nlattr *nlattr; | |
3262 | const char * kind; | |
3263 | int error; | |
3264 | struct fqcodel fqcodel; | |
3265 | ||
3266 | error = tc_parse_qdisc(nlmsg, &kind, &nlattr); | |
3267 | if (error != 0) { | |
3268 | return error; | |
3269 | } | |
3270 | ||
3271 | error = fqcodel_parse_tca_options__(nlattr, &fqcodel); | |
3272 | if (error != 0) { | |
3273 | return error; | |
3274 | } | |
3275 | ||
3276 | fqcodel_install__(netdev, fqcodel.target, fqcodel.limit, fqcodel.interval, | |
3277 | fqcodel.flows, fqcodel.quantum); | |
3278 | return 0; | |
3279 | } | |
3280 | ||
3281 | static void | |
3282 | fqcodel_tc_destroy(struct tc *tc) | |
3283 | { | |
3284 | struct fqcodel *fqcodel = CONTAINER_OF(tc, struct fqcodel, tc); | |
3285 | tc_destroy(tc); | |
3286 | free(fqcodel); | |
3287 | } | |
3288 | ||
3289 | static int | |
3290 | fqcodel_qdisc_get(const struct netdev *netdev, struct smap *details) | |
3291 | { | |
3292 | const struct fqcodel *fqcodel = fqcodel_get__(netdev); | |
3293 | smap_add_format(details, "target", "%u", fqcodel->target); | |
3294 | smap_add_format(details, "limit", "%u", fqcodel->limit); | |
3295 | smap_add_format(details, "interval", "%u", fqcodel->interval); | |
3296 | smap_add_format(details, "flows", "%u", fqcodel->flows); | |
3297 | smap_add_format(details, "quantum", "%u", fqcodel->quantum); | |
3298 | return 0; | |
3299 | } | |
3300 | ||
3301 | static int | |
3302 | fqcodel_qdisc_set(struct netdev *netdev, const struct smap *details) | |
3303 | { | |
3304 | struct fqcodel fqcodel; | |
3305 | ||
3306 | fqcodel_parse_qdisc_details__(netdev, details, &fqcodel); | |
3307 | fqcodel_install__(netdev, fqcodel.target, fqcodel.limit, fqcodel.interval, | |
3308 | fqcodel.flows, fqcodel.quantum); | |
3309 | fqcodel_get__(netdev)->target = fqcodel.target; | |
3310 | fqcodel_get__(netdev)->limit = fqcodel.limit; | |
3311 | fqcodel_get__(netdev)->interval = fqcodel.interval; | |
3312 | fqcodel_get__(netdev)->flows = fqcodel.flows; | |
3313 | fqcodel_get__(netdev)->quantum = fqcodel.quantum; | |
3314 | return 0; | |
3315 | } | |
3316 | ||
3317 | static const struct tc_ops tc_ops_fqcodel = { | |
3318 | "fq_codel", /* linux_name */ | |
3319 | "linux-fq_codel", /* ovs_name */ | |
3320 | FQCODEL_N_QUEUES, /* n_queues */ | |
3321 | fqcodel_tc_install, | |
3322 | fqcodel_tc_load, | |
3323 | fqcodel_tc_destroy, | |
3324 | fqcodel_qdisc_get, | |
3325 | fqcodel_qdisc_set, | |
3326 | NULL, | |
3327 | NULL, | |
3328 | NULL, | |
3329 | NULL, | |
3330 | NULL | |
3331 | }; | |
3332 | \f | |
3333 | /* SFQ traffic control class. */ | |
3334 | ||
3335 | #define SFQ_N_QUEUES 0x0000 | |
3336 | ||
3337 | struct sfq { | |
3338 | struct tc tc; | |
3339 | uint32_t quantum; | |
3340 | uint32_t perturb; | |
3341 | }; | |
3342 | ||
3343 | static struct sfq * | |
3344 | sfq_get__(const struct netdev *netdev_) | |
3345 | { | |
3346 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
3347 | return CONTAINER_OF(netdev->tc, struct sfq, tc); | |
3348 | } | |
3349 | ||
3350 | static void | |
3351 | sfq_install__(struct netdev *netdev_, uint32_t quantum, uint32_t perturb) | |
3352 | { | |
3353 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
3354 | struct sfq *sfq; | |
3355 | ||
3356 | sfq = xmalloc(sizeof *sfq); | |
3357 | tc_init(&sfq->tc, &tc_ops_sfq); | |
3358 | sfq->perturb = perturb; | |
3359 | sfq->quantum = quantum; | |
3360 | ||
3361 | netdev->tc = &sfq->tc; | |
3362 | } | |
3363 | ||
3364 | static int | |
3365 | sfq_setup_qdisc__(struct netdev *netdev, uint32_t quantum, uint32_t perturb) | |
3366 | { | |
3367 | struct tc_sfq_qopt opt; | |
3368 | struct ofpbuf request; | |
3369 | struct tcmsg *tcmsg; | |
3370 | int mtu; | |
3371 | int mtu_error, error; | |
3372 | mtu_error = netdev_linux_get_mtu__(netdev_linux_cast(netdev), &mtu); | |
3373 | ||
3374 | tc_del_qdisc(netdev); | |
3375 | ||
3376 | tcmsg = tc_make_request(netdev, RTM_NEWQDISC, | |
3377 | NLM_F_EXCL | NLM_F_CREATE, &request); | |
3378 | if (!tcmsg) { | |
3379 | return ENODEV; | |
3380 | } | |
3381 | tcmsg->tcm_handle = tc_make_handle(1, 0); | |
3382 | tcmsg->tcm_parent = TC_H_ROOT; | |
3383 | ||
3384 | memset(&opt, 0, sizeof opt); | |
3385 | if (!quantum) { | |
3386 | if (!mtu_error) { | |
3387 | opt.quantum = mtu; /* if we cannot find mtu, use default */ | |
3388 | } | |
3389 | } else { | |
3390 | opt.quantum = quantum; | |
3391 | } | |
3392 | ||
3393 | if (!perturb) { | |
3394 | opt.perturb_period = 10; | |
3395 | } else { | |
3396 | opt.perturb_period = perturb; | |
3397 | } | |
3398 | ||
3399 | nl_msg_put_string(&request, TCA_KIND, "sfq"); | |
3400 | nl_msg_put_unspec(&request, TCA_OPTIONS, &opt, sizeof opt); | |
3401 | ||
3402 | error = tc_transact(&request, NULL); | |
3403 | if (error) { | |
3404 | VLOG_WARN_RL(&rl, "failed to replace %s qdisc, " | |
3405 | "quantum %u, perturb %u error %d(%s)", | |
3406 | netdev_get_name(netdev), | |
3407 | opt.quantum, opt.perturb_period, | |
3408 | error, ovs_strerror(error)); | |
3409 | } | |
3410 | return error; | |
3411 | } | |
3412 | ||
3413 | static void | |
3414 | sfq_parse_qdisc_details__(struct netdev *netdev, | |
3415 | const struct smap *details, struct sfq *sfq) | |
3416 | { | |
13c1637f BP |
3417 | sfq->perturb = smap_get_ullong(details, "perturb", 0); |
3418 | sfq->quantum = smap_get_ullong(details, "quantum", 0); | |
677d9158 | 3419 | |
677d9158 JV |
3420 | if (!sfq->perturb) { |
3421 | sfq->perturb = 10; | |
3422 | } | |
3423 | ||
3424 | if (!sfq->quantum) { | |
13c1637f BP |
3425 | int mtu; |
3426 | if (!netdev_linux_get_mtu__(netdev_linux_cast(netdev), &mtu)) { | |
677d9158 JV |
3427 | sfq->quantum = mtu; |
3428 | } else { | |
3429 | VLOG_WARN_RL(&rl, "when using SFQ, you must specify quantum on a " | |
3430 | "device without mtu"); | |
677d9158 JV |
3431 | } |
3432 | } | |
3433 | } | |
3434 | ||
3435 | static int | |
3436 | sfq_tc_install(struct netdev *netdev, const struct smap *details) | |
3437 | { | |
3438 | int error; | |
3439 | struct sfq sfq; | |
3440 | ||
3441 | sfq_parse_qdisc_details__(netdev, details, &sfq); | |
3442 | error = sfq_setup_qdisc__(netdev, sfq.quantum, sfq.perturb); | |
3443 | if (!error) { | |
3444 | sfq_install__(netdev, sfq.quantum, sfq.perturb); | |
3445 | } | |
3446 | return error; | |
3447 | } | |
3448 | ||
3449 | static int | |
3450 | sfq_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg) | |
3451 | { | |
3452 | const struct tc_sfq_qopt *sfq; | |
3453 | struct nlattr *nlattr; | |
3454 | const char * kind; | |
3455 | int error; | |
3456 | ||
3457 | error = tc_parse_qdisc(nlmsg, &kind, &nlattr); | |
3458 | if (error == 0) { | |
3459 | sfq = nl_attr_get(nlattr); | |
3460 | sfq_install__(netdev, sfq->perturb_period, sfq->quantum); | |
3461 | return 0; | |
3462 | } | |
3463 | ||
3464 | return error; | |
3465 | } | |
3466 | ||
3467 | static void | |
3468 | sfq_tc_destroy(struct tc *tc) | |
3469 | { | |
3470 | struct sfq *sfq = CONTAINER_OF(tc, struct sfq, tc); | |
3471 | tc_destroy(tc); | |
3472 | free(sfq); | |
3473 | } | |
3474 | ||
3475 | static int | |
3476 | sfq_qdisc_get(const struct netdev *netdev, struct smap *details) | |
3477 | { | |
3478 | const struct sfq *sfq = sfq_get__(netdev); | |
3479 | smap_add_format(details, "quantum", "%u", sfq->quantum); | |
3480 | smap_add_format(details, "perturb", "%u", sfq->perturb); | |
3481 | return 0; | |
3482 | } | |
3483 | ||
3484 | static int | |
3485 | sfq_qdisc_set(struct netdev *netdev, const struct smap *details) | |
3486 | { | |
3487 | struct sfq sfq; | |
3488 | ||
3489 | sfq_parse_qdisc_details__(netdev, details, &sfq); | |
3490 | sfq_install__(netdev, sfq.quantum, sfq.perturb); | |
3491 | sfq_get__(netdev)->quantum = sfq.quantum; | |
3492 | sfq_get__(netdev)->perturb = sfq.perturb; | |
3493 | return 0; | |
3494 | } | |
3495 | ||
3496 | static const struct tc_ops tc_ops_sfq = { | |
3497 | "sfq", /* linux_name */ | |
3498 | "linux-sfq", /* ovs_name */ | |
3499 | SFQ_N_QUEUES, /* n_queues */ | |
3500 | sfq_tc_install, | |
3501 | sfq_tc_load, | |
3502 | sfq_tc_destroy, | |
3503 | sfq_qdisc_get, | |
3504 | sfq_qdisc_set, | |
3505 | NULL, | |
3506 | NULL, | |
3507 | NULL, | |
3508 | NULL, | |
3509 | NULL | |
3510 | }; | |
3511 | \f | |
c1c9c9c4 | 3512 | /* HTB traffic control class. */ |
559843ed | 3513 | |
c1c9c9c4 | 3514 | #define HTB_N_QUEUES 0xf000 |
4f631ccd | 3515 | #define HTB_RATE2QUANTUM 10 |
8b61709d | 3516 | |
c1c9c9c4 BP |
3517 | struct htb { |
3518 | struct tc tc; | |
3519 | unsigned int max_rate; /* In bytes/s. */ | |
3520 | }; | |
8b61709d | 3521 | |
c1c9c9c4 | 3522 | struct htb_class { |
93b13be8 | 3523 | struct tc_queue tc_queue; |
c1c9c9c4 BP |
3524 | unsigned int min_rate; /* In bytes/s. */ |
3525 | unsigned int max_rate; /* In bytes/s. */ | |
3526 | unsigned int burst; /* In bytes. */ | |
3527 | unsigned int priority; /* Lower values are higher priorities. */ | |
3528 | }; | |
8b61709d | 3529 | |
c1c9c9c4 | 3530 | static struct htb * |
b5d57fc8 | 3531 | htb_get__(const struct netdev *netdev_) |
c1c9c9c4 | 3532 | { |
b5d57fc8 BP |
3533 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
3534 | return CONTAINER_OF(netdev->tc, struct htb, tc); | |
c1c9c9c4 BP |
3535 | } |
3536 | ||
24045e35 | 3537 | static void |
b5d57fc8 | 3538 | htb_install__(struct netdev *netdev_, uint64_t max_rate) |
c1c9c9c4 | 3539 | { |
b5d57fc8 | 3540 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
3541 | struct htb *htb; |
3542 | ||
3543 | htb = xmalloc(sizeof *htb); | |
3544 | tc_init(&htb->tc, &tc_ops_htb); | |
3545 | htb->max_rate = max_rate; | |
3546 | ||
b5d57fc8 | 3547 | netdev->tc = &htb->tc; |
c1c9c9c4 BP |
3548 | } |
3549 | ||
3550 | /* Create an HTB qdisc. | |
3551 | * | |
a339aa81 | 3552 | * Equivalent to "tc qdisc add dev <dev> root handle 1: htb default 1". */ |
c1c9c9c4 BP |
3553 | static int |
3554 | htb_setup_qdisc__(struct netdev *netdev) | |
3555 | { | |
3556 | size_t opt_offset; | |
3557 | struct tc_htb_glob opt; | |
3558 | struct ofpbuf request; | |
3559 | struct tcmsg *tcmsg; | |
3560 | ||
3561 | tc_del_qdisc(netdev); | |
3562 | ||
3563 | tcmsg = tc_make_request(netdev, RTM_NEWQDISC, | |
3564 | NLM_F_EXCL | NLM_F_CREATE, &request); | |
23a98ffe BP |
3565 | if (!tcmsg) { |
3566 | return ENODEV; | |
3567 | } | |
c1c9c9c4 BP |
3568 | tcmsg->tcm_handle = tc_make_handle(1, 0); |
3569 | tcmsg->tcm_parent = TC_H_ROOT; | |
3570 | ||
3571 | nl_msg_put_string(&request, TCA_KIND, "htb"); | |
3572 | ||
3573 | memset(&opt, 0, sizeof opt); | |
4f631ccd | 3574 | opt.rate2quantum = HTB_RATE2QUANTUM; |
c1c9c9c4 | 3575 | opt.version = 3; |
4ecf12d5 | 3576 | opt.defcls = 1; |
c1c9c9c4 BP |
3577 | |
3578 | opt_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
3579 | nl_msg_put_unspec(&request, TCA_HTB_INIT, &opt, sizeof opt); | |
3580 | nl_msg_end_nested(&request, opt_offset); | |
3581 | ||
3582 | return tc_transact(&request, NULL); | |
3583 | } | |
3584 | ||
3585 | /* Equivalent to "tc class replace <dev> classid <handle> parent <parent> htb | |
3586 | * rate <min_rate>bps ceil <max_rate>bps burst <burst>b prio <priority>". */ | |
3587 | static int | |
3588 | htb_setup_class__(struct netdev *netdev, unsigned int handle, | |
3589 | unsigned int parent, struct htb_class *class) | |
3590 | { | |
3591 | size_t opt_offset; | |
3592 | struct tc_htb_opt opt; | |
3593 | struct ofpbuf request; | |
3594 | struct tcmsg *tcmsg; | |
3595 | int error; | |
3596 | int mtu; | |
3597 | ||
73371c09 | 3598 | error = netdev_linux_get_mtu__(netdev_linux_cast(netdev), &mtu); |
9b020780 | 3599 | if (error) { |
f915f1a8 BP |
3600 | VLOG_WARN_RL(&rl, "cannot set up HTB on device %s that lacks MTU", |
3601 | netdev_get_name(netdev)); | |
9b020780 | 3602 | return error; |
f915f1a8 | 3603 | } |
c1c9c9c4 BP |
3604 | |
3605 | memset(&opt, 0, sizeof opt); | |
3606 | tc_fill_rate(&opt.rate, class->min_rate, mtu); | |
3607 | tc_fill_rate(&opt.ceil, class->max_rate, mtu); | |
4f631ccd AW |
3608 | /* Makes sure the quantum is at least MTU. Setting quantum will |
3609 | * make htb ignore the r2q for this class. */ | |
3610 | if ((class->min_rate / HTB_RATE2QUANTUM) < mtu) { | |
3611 | opt.quantum = mtu; | |
3612 | } | |
c1c9c9c4 BP |
3613 | opt.buffer = tc_calc_buffer(opt.rate.rate, mtu, class->burst); |
3614 | opt.cbuffer = tc_calc_buffer(opt.ceil.rate, mtu, class->burst); | |
3615 | opt.prio = class->priority; | |
3616 | ||
3617 | tcmsg = tc_make_request(netdev, RTM_NEWTCLASS, NLM_F_CREATE, &request); | |
23a98ffe BP |
3618 | if (!tcmsg) { |
3619 | return ENODEV; | |
3620 | } | |
c1c9c9c4 BP |
3621 | tcmsg->tcm_handle = handle; |
3622 | tcmsg->tcm_parent = parent; | |
3623 | ||
3624 | nl_msg_put_string(&request, TCA_KIND, "htb"); | |
3625 | opt_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
3626 | nl_msg_put_unspec(&request, TCA_HTB_PARMS, &opt, sizeof opt); | |
3627 | tc_put_rtab(&request, TCA_HTB_RTAB, &opt.rate); | |
3628 | tc_put_rtab(&request, TCA_HTB_CTAB, &opt.ceil); | |
3629 | nl_msg_end_nested(&request, opt_offset); | |
3630 | ||
3631 | error = tc_transact(&request, NULL); | |
3632 | if (error) { | |
3633 | VLOG_WARN_RL(&rl, "failed to replace %s class %u:%u, parent %u:%u, " | |
3634 | "min_rate=%u max_rate=%u burst=%u prio=%u (%s)", | |
3635 | netdev_get_name(netdev), | |
3636 | tc_get_major(handle), tc_get_minor(handle), | |
3637 | tc_get_major(parent), tc_get_minor(parent), | |
3638 | class->min_rate, class->max_rate, | |
10a89ef0 | 3639 | class->burst, class->priority, ovs_strerror(error)); |
c1c9c9c4 BP |
3640 | } |
3641 | return error; | |
3642 | } | |
3643 | ||
3644 | /* Parses Netlink attributes in 'options' for HTB parameters and stores a | |
3645 | * description of them into 'details'. The description complies with the | |
3646 | * specification given in the vswitch database documentation for linux-htb | |
3647 | * queue details. */ | |
3648 | static int | |
3649 | htb_parse_tca_options__(struct nlattr *nl_options, struct htb_class *class) | |
3650 | { | |
3651 | static const struct nl_policy tca_htb_policy[] = { | |
3652 | [TCA_HTB_PARMS] = { .type = NL_A_UNSPEC, .optional = false, | |
3653 | .min_len = sizeof(struct tc_htb_opt) }, | |
3654 | }; | |
3655 | ||
3656 | struct nlattr *attrs[ARRAY_SIZE(tca_htb_policy)]; | |
3657 | const struct tc_htb_opt *htb; | |
3658 | ||
3659 | if (!nl_parse_nested(nl_options, tca_htb_policy, | |
3660 | attrs, ARRAY_SIZE(tca_htb_policy))) { | |
3661 | VLOG_WARN_RL(&rl, "failed to parse HTB class options"); | |
3662 | return EPROTO; | |
3663 | } | |
3664 | ||
3665 | htb = nl_attr_get(attrs[TCA_HTB_PARMS]); | |
3666 | class->min_rate = htb->rate.rate; | |
3667 | class->max_rate = htb->ceil.rate; | |
3668 | class->burst = tc_ticks_to_bytes(htb->rate.rate, htb->buffer); | |
3669 | class->priority = htb->prio; | |
3670 | return 0; | |
3671 | } | |
3672 | ||
3673 | static int | |
3674 | htb_parse_tcmsg__(struct ofpbuf *tcmsg, unsigned int *queue_id, | |
3675 | struct htb_class *options, | |
3676 | struct netdev_queue_stats *stats) | |
3677 | { | |
3678 | struct nlattr *nl_options; | |
3679 | unsigned int handle; | |
3680 | int error; | |
3681 | ||
3682 | error = tc_parse_class(tcmsg, &handle, &nl_options, stats); | |
3683 | if (!error && queue_id) { | |
17ee3c1f BP |
3684 | unsigned int major = tc_get_major(handle); |
3685 | unsigned int minor = tc_get_minor(handle); | |
3686 | if (major == 1 && minor > 0 && minor <= HTB_N_QUEUES) { | |
3687 | *queue_id = minor - 1; | |
c1c9c9c4 BP |
3688 | } else { |
3689 | error = EPROTO; | |
3690 | } | |
3691 | } | |
3692 | if (!error && options) { | |
3693 | error = htb_parse_tca_options__(nl_options, options); | |
3694 | } | |
3695 | return error; | |
3696 | } | |
3697 | ||
3698 | static void | |
73371c09 | 3699 | htb_parse_qdisc_details__(struct netdev *netdev_, |
79f1cbe9 | 3700 | const struct smap *details, struct htb_class *hc) |
c1c9c9c4 | 3701 | { |
73371c09 | 3702 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 | 3703 | |
13c1637f | 3704 | hc->max_rate = smap_get_ullong(details, "max-rate", 0) / 8; |
c1c9c9c4 | 3705 | if (!hc->max_rate) { |
a00ca915 | 3706 | enum netdev_features current; |
c1c9c9c4 | 3707 | |
73371c09 BP |
3708 | netdev_linux_read_features(netdev); |
3709 | current = !netdev->get_features_error ? netdev->current : 0; | |
d02a5f8e | 3710 | hc->max_rate = netdev_features_to_bps(current, 100 * 1000 * 1000) / 8; |
c1c9c9c4 BP |
3711 | } |
3712 | hc->min_rate = hc->max_rate; | |
3713 | hc->burst = 0; | |
3714 | hc->priority = 0; | |
3715 | } | |
3716 | ||
3717 | static int | |
3718 | htb_parse_class_details__(struct netdev *netdev, | |
79f1cbe9 | 3719 | const struct smap *details, struct htb_class *hc) |
c1c9c9c4 BP |
3720 | { |
3721 | const struct htb *htb = htb_get__(netdev); | |
9b020780 | 3722 | int mtu, error; |
c1c9c9c4 | 3723 | |
73371c09 | 3724 | error = netdev_linux_get_mtu__(netdev_linux_cast(netdev), &mtu); |
9b020780 | 3725 | if (error) { |
f915f1a8 BP |
3726 | VLOG_WARN_RL(&rl, "cannot parse HTB class on device %s that lacks MTU", |
3727 | netdev_get_name(netdev)); | |
9b020780 | 3728 | return error; |
f915f1a8 BP |
3729 | } |
3730 | ||
4f104611 EJ |
3731 | /* HTB requires at least an mtu sized min-rate to send any traffic even |
3732 | * on uncongested links. */ | |
13c1637f | 3733 | hc->min_rate = smap_get_ullong(details, "min-rate", 0) / 8; |
4f104611 | 3734 | hc->min_rate = MAX(hc->min_rate, mtu); |
c1c9c9c4 BP |
3735 | hc->min_rate = MIN(hc->min_rate, htb->max_rate); |
3736 | ||
3737 | /* max-rate */ | |
13c1637f BP |
3738 | hc->max_rate = smap_get_ullong(details, "max-rate", 0) / 8; |
3739 | if (!hc->max_rate) { | |
3740 | hc->max_rate = htb->max_rate; | |
3741 | } | |
c1c9c9c4 BP |
3742 | hc->max_rate = MAX(hc->max_rate, hc->min_rate); |
3743 | hc->max_rate = MIN(hc->max_rate, htb->max_rate); | |
3744 | ||
3745 | /* burst | |
3746 | * | |
3747 | * According to hints in the documentation that I've read, it is important | |
3748 | * that 'burst' be at least as big as the largest frame that might be | |
3749 | * transmitted. Also, making 'burst' a bit bigger than necessary is OK, | |
3750 | * but having it a bit too small is a problem. Since netdev_get_mtu() | |
3751 | * doesn't include the Ethernet header, we need to add at least 14 (18?) to | |
3752 | * the MTU. We actually add 64, instead of 14, as a guard against | |
3753 | * additional headers get tacked on somewhere that we're not aware of. */ | |
13c1637f | 3754 | hc->burst = smap_get_ullong(details, "burst", 0) / 8; |
c1c9c9c4 BP |
3755 | hc->burst = MAX(hc->burst, mtu + 64); |
3756 | ||
3757 | /* priority */ | |
13c1637f | 3758 | hc->priority = smap_get_ullong(details, "priority", 0); |
c1c9c9c4 BP |
3759 | |
3760 | return 0; | |
3761 | } | |
3762 | ||
3763 | static int | |
3764 | htb_query_class__(const struct netdev *netdev, unsigned int handle, | |
3765 | unsigned int parent, struct htb_class *options, | |
3766 | struct netdev_queue_stats *stats) | |
3767 | { | |
3768 | struct ofpbuf *reply; | |
3769 | int error; | |
3770 | ||
3771 | error = tc_query_class(netdev, handle, parent, &reply); | |
3772 | if (!error) { | |
3773 | error = htb_parse_tcmsg__(reply, NULL, options, stats); | |
3774 | ofpbuf_delete(reply); | |
3775 | } | |
3776 | return error; | |
3777 | } | |
3778 | ||
3779 | static int | |
79f1cbe9 | 3780 | htb_tc_install(struct netdev *netdev, const struct smap *details) |
c1c9c9c4 BP |
3781 | { |
3782 | int error; | |
3783 | ||
3784 | error = htb_setup_qdisc__(netdev); | |
3785 | if (!error) { | |
3786 | struct htb_class hc; | |
3787 | ||
3788 | htb_parse_qdisc_details__(netdev, details, &hc); | |
3789 | error = htb_setup_class__(netdev, tc_make_handle(1, 0xfffe), | |
3790 | tc_make_handle(1, 0), &hc); | |
3791 | if (!error) { | |
3792 | htb_install__(netdev, hc.max_rate); | |
3793 | } | |
3794 | } | |
3795 | return error; | |
3796 | } | |
3797 | ||
93b13be8 BP |
3798 | static struct htb_class * |
3799 | htb_class_cast__(const struct tc_queue *queue) | |
3800 | { | |
3801 | return CONTAINER_OF(queue, struct htb_class, tc_queue); | |
3802 | } | |
3803 | ||
c1c9c9c4 BP |
3804 | static void |
3805 | htb_update_queue__(struct netdev *netdev, unsigned int queue_id, | |
3806 | const struct htb_class *hc) | |
3807 | { | |
3808 | struct htb *htb = htb_get__(netdev); | |
93b13be8 BP |
3809 | size_t hash = hash_int(queue_id, 0); |
3810 | struct tc_queue *queue; | |
c1c9c9c4 BP |
3811 | struct htb_class *hcp; |
3812 | ||
93b13be8 BP |
3813 | queue = tc_find_queue__(netdev, queue_id, hash); |
3814 | if (queue) { | |
3815 | hcp = htb_class_cast__(queue); | |
3816 | } else { | |
c1c9c9c4 | 3817 | hcp = xmalloc(sizeof *hcp); |
93b13be8 BP |
3818 | queue = &hcp->tc_queue; |
3819 | queue->queue_id = queue_id; | |
6dc34a0d | 3820 | queue->created = time_msec(); |
93b13be8 | 3821 | hmap_insert(&htb->tc.queues, &queue->hmap_node, hash); |
c1c9c9c4 | 3822 | } |
93b13be8 BP |
3823 | |
3824 | hcp->min_rate = hc->min_rate; | |
3825 | hcp->max_rate = hc->max_rate; | |
3826 | hcp->burst = hc->burst; | |
3827 | hcp->priority = hc->priority; | |
c1c9c9c4 BP |
3828 | } |
3829 | ||
3830 | static int | |
3831 | htb_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg OVS_UNUSED) | |
3832 | { | |
c1c9c9c4 | 3833 | struct ofpbuf msg; |
d57695d7 | 3834 | struct queue_dump_state state; |
c1c9c9c4 | 3835 | struct htb_class hc; |
c1c9c9c4 BP |
3836 | |
3837 | /* Get qdisc options. */ | |
3838 | hc.max_rate = 0; | |
3839 | htb_query_class__(netdev, tc_make_handle(1, 0xfffe), 0, &hc, NULL); | |
24045e35 | 3840 | htb_install__(netdev, hc.max_rate); |
c1c9c9c4 BP |
3841 | |
3842 | /* Get queues. */ | |
d57695d7 | 3843 | if (!start_queue_dump(netdev, &state)) { |
23a98ffe BP |
3844 | return ENODEV; |
3845 | } | |
d57695d7 | 3846 | while (nl_dump_next(&state.dump, &msg, &state.buf)) { |
c1c9c9c4 BP |
3847 | unsigned int queue_id; |
3848 | ||
3849 | if (!htb_parse_tcmsg__(&msg, &queue_id, &hc, NULL)) { | |
3850 | htb_update_queue__(netdev, queue_id, &hc); | |
3851 | } | |
3852 | } | |
d57695d7 | 3853 | finish_queue_dump(&state); |
c1c9c9c4 BP |
3854 | |
3855 | return 0; | |
3856 | } | |
3857 | ||
3858 | static void | |
3859 | htb_tc_destroy(struct tc *tc) | |
3860 | { | |
3861 | struct htb *htb = CONTAINER_OF(tc, struct htb, tc); | |
4ec3d7c7 | 3862 | struct htb_class *hc; |
c1c9c9c4 | 3863 | |
4ec3d7c7 | 3864 | HMAP_FOR_EACH_POP (hc, tc_queue.hmap_node, &htb->tc.queues) { |
c1c9c9c4 BP |
3865 | free(hc); |
3866 | } | |
3867 | tc_destroy(tc); | |
3868 | free(htb); | |
3869 | } | |
3870 | ||
3871 | static int | |
79f1cbe9 | 3872 | htb_qdisc_get(const struct netdev *netdev, struct smap *details) |
c1c9c9c4 BP |
3873 | { |
3874 | const struct htb *htb = htb_get__(netdev); | |
79f1cbe9 | 3875 | smap_add_format(details, "max-rate", "%llu", 8ULL * htb->max_rate); |
c1c9c9c4 BP |
3876 | return 0; |
3877 | } | |
3878 | ||
3879 | static int | |
79f1cbe9 | 3880 | htb_qdisc_set(struct netdev *netdev, const struct smap *details) |
c1c9c9c4 BP |
3881 | { |
3882 | struct htb_class hc; | |
3883 | int error; | |
3884 | ||
3885 | htb_parse_qdisc_details__(netdev, details, &hc); | |
3886 | error = htb_setup_class__(netdev, tc_make_handle(1, 0xfffe), | |
3887 | tc_make_handle(1, 0), &hc); | |
3888 | if (!error) { | |
3889 | htb_get__(netdev)->max_rate = hc.max_rate; | |
3890 | } | |
3891 | return error; | |
3892 | } | |
3893 | ||
3894 | static int | |
93b13be8 | 3895 | htb_class_get(const struct netdev *netdev OVS_UNUSED, |
79f1cbe9 | 3896 | const struct tc_queue *queue, struct smap *details) |
c1c9c9c4 | 3897 | { |
93b13be8 | 3898 | const struct htb_class *hc = htb_class_cast__(queue); |
c1c9c9c4 | 3899 | |
79f1cbe9 | 3900 | smap_add_format(details, "min-rate", "%llu", 8ULL * hc->min_rate); |
c1c9c9c4 | 3901 | if (hc->min_rate != hc->max_rate) { |
79f1cbe9 | 3902 | smap_add_format(details, "max-rate", "%llu", 8ULL * hc->max_rate); |
c1c9c9c4 | 3903 | } |
79f1cbe9 | 3904 | smap_add_format(details, "burst", "%llu", 8ULL * hc->burst); |
c1c9c9c4 | 3905 | if (hc->priority) { |
79f1cbe9 | 3906 | smap_add_format(details, "priority", "%u", hc->priority); |
c1c9c9c4 BP |
3907 | } |
3908 | return 0; | |
3909 | } | |
3910 | ||
3911 | static int | |
3912 | htb_class_set(struct netdev *netdev, unsigned int queue_id, | |
79f1cbe9 | 3913 | const struct smap *details) |
c1c9c9c4 BP |
3914 | { |
3915 | struct htb_class hc; | |
3916 | int error; | |
3917 | ||
3918 | error = htb_parse_class_details__(netdev, details, &hc); | |
3919 | if (error) { | |
3920 | return error; | |
3921 | } | |
3922 | ||
17ee3c1f | 3923 | error = htb_setup_class__(netdev, tc_make_handle(1, queue_id + 1), |
c1c9c9c4 BP |
3924 | tc_make_handle(1, 0xfffe), &hc); |
3925 | if (error) { | |
3926 | return error; | |
3927 | } | |
3928 | ||
3929 | htb_update_queue__(netdev, queue_id, &hc); | |
3930 | return 0; | |
3931 | } | |
3932 | ||
3933 | static int | |
93b13be8 | 3934 | htb_class_delete(struct netdev *netdev, struct tc_queue *queue) |
c1c9c9c4 | 3935 | { |
93b13be8 | 3936 | struct htb_class *hc = htb_class_cast__(queue); |
c1c9c9c4 | 3937 | struct htb *htb = htb_get__(netdev); |
c1c9c9c4 BP |
3938 | int error; |
3939 | ||
93b13be8 | 3940 | error = tc_delete_class(netdev, tc_make_handle(1, queue->queue_id + 1)); |
c1c9c9c4 | 3941 | if (!error) { |
93b13be8 | 3942 | hmap_remove(&htb->tc.queues, &hc->tc_queue.hmap_node); |
c1c9c9c4 | 3943 | free(hc); |
c1c9c9c4 BP |
3944 | } |
3945 | return error; | |
3946 | } | |
3947 | ||
3948 | static int | |
93b13be8 | 3949 | htb_class_get_stats(const struct netdev *netdev, const struct tc_queue *queue, |
c1c9c9c4 BP |
3950 | struct netdev_queue_stats *stats) |
3951 | { | |
93b13be8 | 3952 | return htb_query_class__(netdev, tc_make_handle(1, queue->queue_id + 1), |
c1c9c9c4 BP |
3953 | tc_make_handle(1, 0xfffe), NULL, stats); |
3954 | } | |
3955 | ||
3956 | static int | |
3957 | htb_class_dump_stats(const struct netdev *netdev OVS_UNUSED, | |
3958 | const struct ofpbuf *nlmsg, | |
3959 | netdev_dump_queue_stats_cb *cb, void *aux) | |
3960 | { | |
3961 | struct netdev_queue_stats stats; | |
17ee3c1f | 3962 | unsigned int handle, major, minor; |
c1c9c9c4 BP |
3963 | int error; |
3964 | ||
3965 | error = tc_parse_class(nlmsg, &handle, NULL, &stats); | |
3966 | if (error) { | |
3967 | return error; | |
3968 | } | |
3969 | ||
17ee3c1f BP |
3970 | major = tc_get_major(handle); |
3971 | minor = tc_get_minor(handle); | |
3972 | if (major == 1 && minor > 0 && minor <= HTB_N_QUEUES) { | |
d5590e7e | 3973 | (*cb)(minor - 1, &stats, aux); |
c1c9c9c4 BP |
3974 | } |
3975 | return 0; | |
3976 | } | |
3977 | ||
3978 | static const struct tc_ops tc_ops_htb = { | |
3979 | "htb", /* linux_name */ | |
3980 | "linux-htb", /* ovs_name */ | |
3981 | HTB_N_QUEUES, /* n_queues */ | |
3982 | htb_tc_install, | |
3983 | htb_tc_load, | |
3984 | htb_tc_destroy, | |
3985 | htb_qdisc_get, | |
3986 | htb_qdisc_set, | |
3987 | htb_class_get, | |
3988 | htb_class_set, | |
3989 | htb_class_delete, | |
3990 | htb_class_get_stats, | |
3991 | htb_class_dump_stats | |
3992 | }; | |
3993 | \f | |
a339aa81 EJ |
3994 | /* "linux-hfsc" traffic control class. */ |
3995 | ||
3996 | #define HFSC_N_QUEUES 0xf000 | |
3997 | ||
3998 | struct hfsc { | |
3999 | struct tc tc; | |
4000 | uint32_t max_rate; | |
4001 | }; | |
4002 | ||
4003 | struct hfsc_class { | |
4004 | struct tc_queue tc_queue; | |
4005 | uint32_t min_rate; | |
4006 | uint32_t max_rate; | |
4007 | }; | |
4008 | ||
4009 | static struct hfsc * | |
b5d57fc8 | 4010 | hfsc_get__(const struct netdev *netdev_) |
a339aa81 | 4011 | { |
b5d57fc8 BP |
4012 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
4013 | return CONTAINER_OF(netdev->tc, struct hfsc, tc); | |
a339aa81 EJ |
4014 | } |
4015 | ||
4016 | static struct hfsc_class * | |
4017 | hfsc_class_cast__(const struct tc_queue *queue) | |
4018 | { | |
4019 | return CONTAINER_OF(queue, struct hfsc_class, tc_queue); | |
4020 | } | |
4021 | ||
24045e35 | 4022 | static void |
b5d57fc8 | 4023 | hfsc_install__(struct netdev *netdev_, uint32_t max_rate) |
a339aa81 | 4024 | { |
b5d57fc8 | 4025 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
a339aa81 EJ |
4026 | struct hfsc *hfsc; |
4027 | ||
a339aa81 EJ |
4028 | hfsc = xmalloc(sizeof *hfsc); |
4029 | tc_init(&hfsc->tc, &tc_ops_hfsc); | |
4030 | hfsc->max_rate = max_rate; | |
b5d57fc8 | 4031 | netdev->tc = &hfsc->tc; |
a339aa81 EJ |
4032 | } |
4033 | ||
4034 | static void | |
4035 | hfsc_update_queue__(struct netdev *netdev, unsigned int queue_id, | |
4036 | const struct hfsc_class *hc) | |
4037 | { | |
4038 | size_t hash; | |
4039 | struct hfsc *hfsc; | |
4040 | struct hfsc_class *hcp; | |
4041 | struct tc_queue *queue; | |
4042 | ||
4043 | hfsc = hfsc_get__(netdev); | |
4044 | hash = hash_int(queue_id, 0); | |
4045 | ||
4046 | queue = tc_find_queue__(netdev, queue_id, hash); | |
4047 | if (queue) { | |
4048 | hcp = hfsc_class_cast__(queue); | |
4049 | } else { | |
4050 | hcp = xmalloc(sizeof *hcp); | |
4051 | queue = &hcp->tc_queue; | |
4052 | queue->queue_id = queue_id; | |
6dc34a0d | 4053 | queue->created = time_msec(); |
a339aa81 EJ |
4054 | hmap_insert(&hfsc->tc.queues, &queue->hmap_node, hash); |
4055 | } | |
4056 | ||
4057 | hcp->min_rate = hc->min_rate; | |
4058 | hcp->max_rate = hc->max_rate; | |
4059 | } | |
4060 | ||
4061 | static int | |
4062 | hfsc_parse_tca_options__(struct nlattr *nl_options, struct hfsc_class *class) | |
4063 | { | |
4064 | const struct tc_service_curve *rsc, *fsc, *usc; | |
4065 | static const struct nl_policy tca_hfsc_policy[] = { | |
4066 | [TCA_HFSC_RSC] = { | |
4067 | .type = NL_A_UNSPEC, | |
4068 | .optional = false, | |
4069 | .min_len = sizeof(struct tc_service_curve), | |
4070 | }, | |
4071 | [TCA_HFSC_FSC] = { | |
4072 | .type = NL_A_UNSPEC, | |
4073 | .optional = false, | |
4074 | .min_len = sizeof(struct tc_service_curve), | |
4075 | }, | |
4076 | [TCA_HFSC_USC] = { | |
4077 | .type = NL_A_UNSPEC, | |
4078 | .optional = false, | |
4079 | .min_len = sizeof(struct tc_service_curve), | |
4080 | }, | |
4081 | }; | |
4082 | struct nlattr *attrs[ARRAY_SIZE(tca_hfsc_policy)]; | |
4083 | ||
4084 | if (!nl_parse_nested(nl_options, tca_hfsc_policy, | |
4085 | attrs, ARRAY_SIZE(tca_hfsc_policy))) { | |
4086 | VLOG_WARN_RL(&rl, "failed to parse HFSC class options"); | |
4087 | return EPROTO; | |
4088 | } | |
4089 | ||
4090 | rsc = nl_attr_get(attrs[TCA_HFSC_RSC]); | |
4091 | fsc = nl_attr_get(attrs[TCA_HFSC_FSC]); | |
4092 | usc = nl_attr_get(attrs[TCA_HFSC_USC]); | |
4093 | ||
4094 | if (rsc->m1 != 0 || rsc->d != 0 || | |
4095 | fsc->m1 != 0 || fsc->d != 0 || | |
4096 | usc->m1 != 0 || usc->d != 0) { | |
4097 | VLOG_WARN_RL(&rl, "failed to parse HFSC class options. " | |
4098 | "Non-linear service curves are not supported."); | |
4099 | return EPROTO; | |
4100 | } | |
4101 | ||
4102 | if (rsc->m2 != fsc->m2) { | |
4103 | VLOG_WARN_RL(&rl, "failed to parse HFSC class options. " | |
4104 | "Real-time service curves are not supported "); | |
4105 | return EPROTO; | |
4106 | } | |
4107 | ||
4108 | if (rsc->m2 > usc->m2) { | |
4109 | VLOG_WARN_RL(&rl, "failed to parse HFSC class options. " | |
4110 | "Min-rate service curve is greater than " | |
4111 | "the max-rate service curve."); | |
4112 | return EPROTO; | |
4113 | } | |
4114 | ||
4115 | class->min_rate = fsc->m2; | |
4116 | class->max_rate = usc->m2; | |
4117 | return 0; | |
4118 | } | |
4119 | ||
4120 | static int | |
4121 | hfsc_parse_tcmsg__(struct ofpbuf *tcmsg, unsigned int *queue_id, | |
4122 | struct hfsc_class *options, | |
4123 | struct netdev_queue_stats *stats) | |
4124 | { | |
4125 | int error; | |
4126 | unsigned int handle; | |
4127 | struct nlattr *nl_options; | |
4128 | ||
4129 | error = tc_parse_class(tcmsg, &handle, &nl_options, stats); | |
4130 | if (error) { | |
4131 | return error; | |
4132 | } | |
4133 | ||
4134 | if (queue_id) { | |
4135 | unsigned int major, minor; | |
4136 | ||
4137 | major = tc_get_major(handle); | |
4138 | minor = tc_get_minor(handle); | |
4139 | if (major == 1 && minor > 0 && minor <= HFSC_N_QUEUES) { | |
4140 | *queue_id = minor - 1; | |
4141 | } else { | |
4142 | return EPROTO; | |
4143 | } | |
4144 | } | |
4145 | ||
4146 | if (options) { | |
4147 | error = hfsc_parse_tca_options__(nl_options, options); | |
4148 | } | |
4149 | ||
4150 | return error; | |
4151 | } | |
4152 | ||
4153 | static int | |
4154 | hfsc_query_class__(const struct netdev *netdev, unsigned int handle, | |
4155 | unsigned int parent, struct hfsc_class *options, | |
4156 | struct netdev_queue_stats *stats) | |
4157 | { | |
4158 | int error; | |
4159 | struct ofpbuf *reply; | |
4160 | ||
4161 | error = tc_query_class(netdev, handle, parent, &reply); | |
4162 | if (error) { | |
4163 | return error; | |
4164 | } | |
4165 | ||
4166 | error = hfsc_parse_tcmsg__(reply, NULL, options, stats); | |
4167 | ofpbuf_delete(reply); | |
4168 | return error; | |
4169 | } | |
4170 | ||
4171 | static void | |
73371c09 | 4172 | hfsc_parse_qdisc_details__(struct netdev *netdev_, const struct smap *details, |
a339aa81 EJ |
4173 | struct hfsc_class *class) |
4174 | { | |
73371c09 | 4175 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
a339aa81 | 4176 | |
13c1637f | 4177 | uint32_t max_rate = smap_get_ullong(details, "max-rate", 0) / 8; |
a339aa81 | 4178 | if (!max_rate) { |
a00ca915 | 4179 | enum netdev_features current; |
a339aa81 | 4180 | |
73371c09 BP |
4181 | netdev_linux_read_features(netdev); |
4182 | current = !netdev->get_features_error ? netdev->current : 0; | |
d02a5f8e | 4183 | max_rate = netdev_features_to_bps(current, 100 * 1000 * 1000) / 8; |
a339aa81 EJ |
4184 | } |
4185 | ||
4186 | class->min_rate = max_rate; | |
4187 | class->max_rate = max_rate; | |
4188 | } | |
4189 | ||
4190 | static int | |
4191 | hfsc_parse_class_details__(struct netdev *netdev, | |
79f1cbe9 | 4192 | const struct smap *details, |
a339aa81 EJ |
4193 | struct hfsc_class * class) |
4194 | { | |
4195 | const struct hfsc *hfsc; | |
4196 | uint32_t min_rate, max_rate; | |
a339aa81 EJ |
4197 | |
4198 | hfsc = hfsc_get__(netdev); | |
a339aa81 | 4199 | |
13c1637f | 4200 | min_rate = smap_get_ullong(details, "min-rate", 0) / 8; |
79398bad | 4201 | min_rate = MAX(min_rate, 1); |
a339aa81 EJ |
4202 | min_rate = MIN(min_rate, hfsc->max_rate); |
4203 | ||
13c1637f | 4204 | max_rate = smap_get_ullong(details, "max-rate", hfsc->max_rate * 8) / 8; |
a339aa81 EJ |
4205 | max_rate = MAX(max_rate, min_rate); |
4206 | max_rate = MIN(max_rate, hfsc->max_rate); | |
4207 | ||
4208 | class->min_rate = min_rate; | |
4209 | class->max_rate = max_rate; | |
4210 | ||
4211 | return 0; | |
4212 | } | |
4213 | ||
4214 | /* Create an HFSC qdisc. | |
4215 | * | |
4216 | * Equivalent to "tc qdisc add dev <dev> root handle 1: hfsc default 1". */ | |
4217 | static int | |
4218 | hfsc_setup_qdisc__(struct netdev * netdev) | |
4219 | { | |
4220 | struct tcmsg *tcmsg; | |
4221 | struct ofpbuf request; | |
4222 | struct tc_hfsc_qopt opt; | |
4223 | ||
4224 | tc_del_qdisc(netdev); | |
4225 | ||
4226 | tcmsg = tc_make_request(netdev, RTM_NEWQDISC, | |
4227 | NLM_F_EXCL | NLM_F_CREATE, &request); | |
4228 | ||
4229 | if (!tcmsg) { | |
4230 | return ENODEV; | |
4231 | } | |
4232 | ||
4233 | tcmsg->tcm_handle = tc_make_handle(1, 0); | |
4234 | tcmsg->tcm_parent = TC_H_ROOT; | |
4235 | ||
4236 | memset(&opt, 0, sizeof opt); | |
4237 | opt.defcls = 1; | |
4238 | ||
4239 | nl_msg_put_string(&request, TCA_KIND, "hfsc"); | |
4240 | nl_msg_put_unspec(&request, TCA_OPTIONS, &opt, sizeof opt); | |
4241 | ||
4242 | return tc_transact(&request, NULL); | |
4243 | } | |
4244 | ||
4245 | /* Create an HFSC class. | |
4246 | * | |
4247 | * Equivalent to "tc class add <dev> parent <parent> classid <handle> hfsc | |
4248 | * sc rate <min_rate> ul rate <max_rate>" */ | |
4249 | static int | |
4250 | hfsc_setup_class__(struct netdev *netdev, unsigned int handle, | |
4251 | unsigned int parent, struct hfsc_class *class) | |
4252 | { | |
4253 | int error; | |
4254 | size_t opt_offset; | |
4255 | struct tcmsg *tcmsg; | |
4256 | struct ofpbuf request; | |
4257 | struct tc_service_curve min, max; | |
4258 | ||
4259 | tcmsg = tc_make_request(netdev, RTM_NEWTCLASS, NLM_F_CREATE, &request); | |
4260 | ||
4261 | if (!tcmsg) { | |
4262 | return ENODEV; | |
4263 | } | |
4264 | ||
4265 | tcmsg->tcm_handle = handle; | |
4266 | tcmsg->tcm_parent = parent; | |
4267 | ||
4268 | min.m1 = 0; | |
4269 | min.d = 0; | |
4270 | min.m2 = class->min_rate; | |
4271 | ||
4272 | max.m1 = 0; | |
4273 | max.d = 0; | |
4274 | max.m2 = class->max_rate; | |
4275 | ||
4276 | nl_msg_put_string(&request, TCA_KIND, "hfsc"); | |
4277 | opt_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
4278 | nl_msg_put_unspec(&request, TCA_HFSC_RSC, &min, sizeof min); | |
4279 | nl_msg_put_unspec(&request, TCA_HFSC_FSC, &min, sizeof min); | |
4280 | nl_msg_put_unspec(&request, TCA_HFSC_USC, &max, sizeof max); | |
4281 | nl_msg_end_nested(&request, opt_offset); | |
4282 | ||
4283 | error = tc_transact(&request, NULL); | |
4284 | if (error) { | |
4285 | VLOG_WARN_RL(&rl, "failed to replace %s class %u:%u, parent %u:%u, " | |
4286 | "min-rate %ubps, max-rate %ubps (%s)", | |
4287 | netdev_get_name(netdev), | |
4288 | tc_get_major(handle), tc_get_minor(handle), | |
4289 | tc_get_major(parent), tc_get_minor(parent), | |
10a89ef0 | 4290 | class->min_rate, class->max_rate, ovs_strerror(error)); |
a339aa81 EJ |
4291 | } |
4292 | ||
4293 | return error; | |
4294 | } | |
4295 | ||
4296 | static int | |
79f1cbe9 | 4297 | hfsc_tc_install(struct netdev *netdev, const struct smap *details) |
a339aa81 EJ |
4298 | { |
4299 | int error; | |
4300 | struct hfsc_class class; | |
4301 | ||
4302 | error = hfsc_setup_qdisc__(netdev); | |
4303 | ||
4304 | if (error) { | |
4305 | return error; | |
4306 | } | |
4307 | ||
4308 | hfsc_parse_qdisc_details__(netdev, details, &class); | |
4309 | error = hfsc_setup_class__(netdev, tc_make_handle(1, 0xfffe), | |
4310 | tc_make_handle(1, 0), &class); | |
4311 | ||
4312 | if (error) { | |
4313 | return error; | |
4314 | } | |
4315 | ||
4316 | hfsc_install__(netdev, class.max_rate); | |
4317 | return 0; | |
4318 | } | |
4319 | ||
4320 | static int | |
4321 | hfsc_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg OVS_UNUSED) | |
4322 | { | |
4323 | struct ofpbuf msg; | |
d57695d7 | 4324 | struct queue_dump_state state; |
a339aa81 EJ |
4325 | struct hfsc_class hc; |
4326 | ||
4327 | hc.max_rate = 0; | |
4328 | hfsc_query_class__(netdev, tc_make_handle(1, 0xfffe), 0, &hc, NULL); | |
24045e35 | 4329 | hfsc_install__(netdev, hc.max_rate); |
a339aa81 | 4330 | |
d57695d7 | 4331 | if (!start_queue_dump(netdev, &state)) { |
a339aa81 EJ |
4332 | return ENODEV; |
4333 | } | |
4334 | ||
d57695d7 | 4335 | while (nl_dump_next(&state.dump, &msg, &state.buf)) { |
a339aa81 EJ |
4336 | unsigned int queue_id; |
4337 | ||
4338 | if (!hfsc_parse_tcmsg__(&msg, &queue_id, &hc, NULL)) { | |
4339 | hfsc_update_queue__(netdev, queue_id, &hc); | |
4340 | } | |
4341 | } | |
4342 | ||
d57695d7 | 4343 | finish_queue_dump(&state); |
a339aa81 EJ |
4344 | return 0; |
4345 | } | |
4346 | ||
4347 | static void | |
4348 | hfsc_tc_destroy(struct tc *tc) | |
4349 | { | |
4350 | struct hfsc *hfsc; | |
4351 | struct hfsc_class *hc, *next; | |
4352 | ||
4353 | hfsc = CONTAINER_OF(tc, struct hfsc, tc); | |
4354 | ||
4355 | HMAP_FOR_EACH_SAFE (hc, next, tc_queue.hmap_node, &hfsc->tc.queues) { | |
4356 | hmap_remove(&hfsc->tc.queues, &hc->tc_queue.hmap_node); | |
4357 | free(hc); | |
4358 | } | |
4359 | ||
4360 | tc_destroy(tc); | |
4361 | free(hfsc); | |
4362 | } | |
4363 | ||
4364 | static int | |
79f1cbe9 | 4365 | hfsc_qdisc_get(const struct netdev *netdev, struct smap *details) |
a339aa81 EJ |
4366 | { |
4367 | const struct hfsc *hfsc; | |
4368 | hfsc = hfsc_get__(netdev); | |
79f1cbe9 | 4369 | smap_add_format(details, "max-rate", "%llu", 8ULL * hfsc->max_rate); |
a339aa81 EJ |
4370 | return 0; |
4371 | } | |
4372 | ||
4373 | static int | |
79f1cbe9 | 4374 | hfsc_qdisc_set(struct netdev *netdev, const struct smap *details) |
a339aa81 EJ |
4375 | { |
4376 | int error; | |
4377 | struct hfsc_class class; | |
4378 | ||
4379 | hfsc_parse_qdisc_details__(netdev, details, &class); | |
4380 | error = hfsc_setup_class__(netdev, tc_make_handle(1, 0xfffe), | |
4381 | tc_make_handle(1, 0), &class); | |
4382 | ||
4383 | if (!error) { | |
4384 | hfsc_get__(netdev)->max_rate = class.max_rate; | |
4385 | } | |
4386 | ||
4387 | return error; | |
4388 | } | |
4389 | ||
4390 | static int | |
4391 | hfsc_class_get(const struct netdev *netdev OVS_UNUSED, | |
79f1cbe9 | 4392 | const struct tc_queue *queue, struct smap *details) |
a339aa81 EJ |
4393 | { |
4394 | const struct hfsc_class *hc; | |
4395 | ||
4396 | hc = hfsc_class_cast__(queue); | |
79f1cbe9 | 4397 | smap_add_format(details, "min-rate", "%llu", 8ULL * hc->min_rate); |
a339aa81 | 4398 | if (hc->min_rate != hc->max_rate) { |
79f1cbe9 | 4399 | smap_add_format(details, "max-rate", "%llu", 8ULL * hc->max_rate); |
a339aa81 EJ |
4400 | } |
4401 | return 0; | |
4402 | } | |
4403 | ||
4404 | static int | |
4405 | hfsc_class_set(struct netdev *netdev, unsigned int queue_id, | |
79f1cbe9 | 4406 | const struct smap *details) |
a339aa81 EJ |
4407 | { |
4408 | int error; | |
4409 | struct hfsc_class class; | |
4410 | ||
4411 | error = hfsc_parse_class_details__(netdev, details, &class); | |
4412 | if (error) { | |
4413 | return error; | |
4414 | } | |
4415 | ||
4416 | error = hfsc_setup_class__(netdev, tc_make_handle(1, queue_id + 1), | |
4417 | tc_make_handle(1, 0xfffe), &class); | |
4418 | if (error) { | |
4419 | return error; | |
4420 | } | |
4421 | ||
4422 | hfsc_update_queue__(netdev, queue_id, &class); | |
4423 | return 0; | |
4424 | } | |
4425 | ||
4426 | static int | |
4427 | hfsc_class_delete(struct netdev *netdev, struct tc_queue *queue) | |
4428 | { | |
4429 | int error; | |
4430 | struct hfsc *hfsc; | |
4431 | struct hfsc_class *hc; | |
4432 | ||
4433 | hc = hfsc_class_cast__(queue); | |
4434 | hfsc = hfsc_get__(netdev); | |
4435 | ||
4436 | error = tc_delete_class(netdev, tc_make_handle(1, queue->queue_id + 1)); | |
4437 | if (!error) { | |
4438 | hmap_remove(&hfsc->tc.queues, &hc->tc_queue.hmap_node); | |
4439 | free(hc); | |
4440 | } | |
4441 | return error; | |
4442 | } | |
4443 | ||
4444 | static int | |
4445 | hfsc_class_get_stats(const struct netdev *netdev, const struct tc_queue *queue, | |
4446 | struct netdev_queue_stats *stats) | |
4447 | { | |
4448 | return hfsc_query_class__(netdev, tc_make_handle(1, queue->queue_id + 1), | |
4449 | tc_make_handle(1, 0xfffe), NULL, stats); | |
4450 | } | |
4451 | ||
4452 | static int | |
4453 | hfsc_class_dump_stats(const struct netdev *netdev OVS_UNUSED, | |
4454 | const struct ofpbuf *nlmsg, | |
4455 | netdev_dump_queue_stats_cb *cb, void *aux) | |
4456 | { | |
4457 | struct netdev_queue_stats stats; | |
4458 | unsigned int handle, major, minor; | |
4459 | int error; | |
4460 | ||
4461 | error = tc_parse_class(nlmsg, &handle, NULL, &stats); | |
4462 | if (error) { | |
4463 | return error; | |
4464 | } | |
4465 | ||
4466 | major = tc_get_major(handle); | |
4467 | minor = tc_get_minor(handle); | |
4468 | if (major == 1 && minor > 0 && minor <= HFSC_N_QUEUES) { | |
4469 | (*cb)(minor - 1, &stats, aux); | |
4470 | } | |
4471 | return 0; | |
4472 | } | |
4473 | ||
4474 | static const struct tc_ops tc_ops_hfsc = { | |
4475 | "hfsc", /* linux_name */ | |
4476 | "linux-hfsc", /* ovs_name */ | |
4477 | HFSC_N_QUEUES, /* n_queues */ | |
4478 | hfsc_tc_install, /* tc_install */ | |
4479 | hfsc_tc_load, /* tc_load */ | |
4480 | hfsc_tc_destroy, /* tc_destroy */ | |
4481 | hfsc_qdisc_get, /* qdisc_get */ | |
4482 | hfsc_qdisc_set, /* qdisc_set */ | |
4483 | hfsc_class_get, /* class_get */ | |
4484 | hfsc_class_set, /* class_set */ | |
4485 | hfsc_class_delete, /* class_delete */ | |
4486 | hfsc_class_get_stats, /* class_get_stats */ | |
4487 | hfsc_class_dump_stats /* class_dump_stats */ | |
4488 | }; | |
4489 | \f | |
6cf888b8 BS |
4490 | /* "linux-noop" traffic control class. */ |
4491 | ||
4492 | static void | |
4493 | noop_install__(struct netdev *netdev_) | |
4494 | { | |
4495 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); | |
4496 | static const struct tc tc = TC_INITIALIZER(&tc, &tc_ops_default); | |
4497 | ||
4498 | netdev->tc = CONST_CAST(struct tc *, &tc); | |
4499 | } | |
4500 | ||
4501 | static int | |
4502 | noop_tc_install(struct netdev *netdev, | |
4503 | const struct smap *details OVS_UNUSED) | |
4504 | { | |
4505 | noop_install__(netdev); | |
4506 | return 0; | |
4507 | } | |
4508 | ||
4509 | static int | |
4510 | noop_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg OVS_UNUSED) | |
4511 | { | |
4512 | noop_install__(netdev); | |
4513 | return 0; | |
4514 | } | |
4515 | ||
4516 | static const struct tc_ops tc_ops_noop = { | |
4517 | NULL, /* linux_name */ | |
4518 | "linux-noop", /* ovs_name */ | |
4519 | 0, /* n_queues */ | |
4520 | noop_tc_install, | |
4521 | noop_tc_load, | |
4522 | NULL, /* tc_destroy */ | |
4523 | NULL, /* qdisc_get */ | |
4524 | NULL, /* qdisc_set */ | |
4525 | NULL, /* class_get */ | |
4526 | NULL, /* class_set */ | |
4527 | NULL, /* class_delete */ | |
4528 | NULL, /* class_get_stats */ | |
4529 | NULL /* class_dump_stats */ | |
4530 | }; | |
4531 | \f | |
c1c9c9c4 BP |
4532 | /* "linux-default" traffic control class. |
4533 | * | |
4534 | * This class represents the default, unnamed Linux qdisc. It corresponds to | |
4535 | * the "" (empty string) QoS type in the OVS database. */ | |
4536 | ||
4537 | static void | |
b5d57fc8 | 4538 | default_install__(struct netdev *netdev_) |
c1c9c9c4 | 4539 | { |
b5d57fc8 | 4540 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
559eb230 | 4541 | static const struct tc tc = TC_INITIALIZER(&tc, &tc_ops_default); |
c1c9c9c4 | 4542 | |
559eb230 BP |
4543 | /* Nothing but a tc class implementation is allowed to write to a tc. This |
4544 | * class never does that, so we can legitimately use a const tc object. */ | |
b5d57fc8 | 4545 | netdev->tc = CONST_CAST(struct tc *, &tc); |
c1c9c9c4 BP |
4546 | } |
4547 | ||
4548 | static int | |
4549 | default_tc_install(struct netdev *netdev, | |
79f1cbe9 | 4550 | const struct smap *details OVS_UNUSED) |
c1c9c9c4 BP |
4551 | { |
4552 | default_install__(netdev); | |
4553 | return 0; | |
4554 | } | |
4555 | ||
4556 | static int | |
4557 | default_tc_load(struct netdev *netdev, struct ofpbuf *nlmsg OVS_UNUSED) | |
4558 | { | |
4559 | default_install__(netdev); | |
4560 | return 0; | |
4561 | } | |
4562 | ||
4563 | static const struct tc_ops tc_ops_default = { | |
4564 | NULL, /* linux_name */ | |
4565 | "", /* ovs_name */ | |
4566 | 0, /* n_queues */ | |
4567 | default_tc_install, | |
4568 | default_tc_load, | |
4569 | NULL, /* tc_destroy */ | |
4570 | NULL, /* qdisc_get */ | |
4571 | NULL, /* qdisc_set */ | |
4572 | NULL, /* class_get */ | |
4573 | NULL, /* class_set */ | |
4574 | NULL, /* class_delete */ | |
4575 | NULL, /* class_get_stats */ | |
4576 | NULL /* class_dump_stats */ | |
4577 | }; | |
4578 | \f | |
4579 | /* "linux-other" traffic control class. | |
4580 | * | |
4581 | * */ | |
4582 | ||
4583 | static int | |
b5d57fc8 | 4584 | other_tc_load(struct netdev *netdev_, struct ofpbuf *nlmsg OVS_UNUSED) |
c1c9c9c4 | 4585 | { |
b5d57fc8 | 4586 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
559eb230 | 4587 | static const struct tc tc = TC_INITIALIZER(&tc, &tc_ops_other); |
c1c9c9c4 | 4588 | |
559eb230 BP |
4589 | /* Nothing but a tc class implementation is allowed to write to a tc. This |
4590 | * class never does that, so we can legitimately use a const tc object. */ | |
b5d57fc8 | 4591 | netdev->tc = CONST_CAST(struct tc *, &tc); |
c1c9c9c4 BP |
4592 | return 0; |
4593 | } | |
4594 | ||
4595 | static const struct tc_ops tc_ops_other = { | |
4596 | NULL, /* linux_name */ | |
4597 | "linux-other", /* ovs_name */ | |
4598 | 0, /* n_queues */ | |
4599 | NULL, /* tc_install */ | |
4600 | other_tc_load, | |
4601 | NULL, /* tc_destroy */ | |
4602 | NULL, /* qdisc_get */ | |
4603 | NULL, /* qdisc_set */ | |
4604 | NULL, /* class_get */ | |
4605 | NULL, /* class_set */ | |
4606 | NULL, /* class_delete */ | |
4607 | NULL, /* class_get_stats */ | |
4608 | NULL /* class_dump_stats */ | |
4609 | }; | |
4610 | \f | |
4611 | /* Traffic control. */ | |
4612 | ||
4613 | /* Number of kernel "tc" ticks per second. */ | |
4614 | static double ticks_per_s; | |
4615 | ||
4616 | /* Number of kernel "jiffies" per second. This is used for the purpose of | |
4617 | * computing buffer sizes. Generally kernel qdiscs need to be able to buffer | |
4618 | * one jiffy's worth of data. | |
4619 | * | |
4620 | * There are two possibilities here: | |
4621 | * | |
4622 | * - 'buffer_hz' is the kernel's real timer tick rate, a small number in the | |
4623 | * approximate range of 100 to 1024. That means that we really need to | |
4624 | * make sure that the qdisc can buffer that much data. | |
4625 | * | |
4626 | * - 'buffer_hz' is an absurdly large number. That means that the kernel | |
4627 | * has finely granular timers and there's no need to fudge additional room | |
4628 | * for buffers. (There's no extra effort needed to implement that: the | |
4629 | * large 'buffer_hz' is used as a divisor, so practically any number will | |
4630 | * come out as 0 in the division. Small integer results in the case of | |
4631 | * really high dividends won't have any real effect anyhow.) | |
4632 | */ | |
4633 | static unsigned int buffer_hz; | |
4634 | ||
4635 | /* Returns tc handle 'major':'minor'. */ | |
4636 | static unsigned int | |
4637 | tc_make_handle(unsigned int major, unsigned int minor) | |
4638 | { | |
4639 | return TC_H_MAKE(major << 16, minor); | |
4640 | } | |
4641 | ||
4642 | /* Returns the major number from 'handle'. */ | |
4643 | static unsigned int | |
4644 | tc_get_major(unsigned int handle) | |
4645 | { | |
4646 | return TC_H_MAJ(handle) >> 16; | |
4647 | } | |
4648 | ||
4649 | /* Returns the minor number from 'handle'. */ | |
4650 | static unsigned int | |
4651 | tc_get_minor(unsigned int handle) | |
4652 | { | |
4653 | return TC_H_MIN(handle); | |
4654 | } | |
4655 | ||
4656 | static struct tcmsg * | |
4657 | tc_make_request(const struct netdev *netdev, int type, unsigned int flags, | |
4658 | struct ofpbuf *request) | |
4659 | { | |
4660 | struct tcmsg *tcmsg; | |
4661 | int ifindex; | |
4662 | int error; | |
4663 | ||
4664 | error = get_ifindex(netdev, &ifindex); | |
4665 | if (error) { | |
4666 | return NULL; | |
4667 | } | |
4668 | ||
4669 | ofpbuf_init(request, 512); | |
4670 | nl_msg_put_nlmsghdr(request, sizeof *tcmsg, type, NLM_F_REQUEST | flags); | |
4671 | tcmsg = ofpbuf_put_zeros(request, sizeof *tcmsg); | |
4672 | tcmsg->tcm_family = AF_UNSPEC; | |
4673 | tcmsg->tcm_ifindex = ifindex; | |
4674 | /* Caller should fill in tcmsg->tcm_handle. */ | |
4675 | /* Caller should fill in tcmsg->tcm_parent. */ | |
4676 | ||
4677 | return tcmsg; | |
4678 | } | |
4679 | ||
4680 | static int | |
4681 | tc_transact(struct ofpbuf *request, struct ofpbuf **replyp) | |
4682 | { | |
a88b4e04 | 4683 | int error = nl_transact(NETLINK_ROUTE, request, replyp); |
c1c9c9c4 BP |
4684 | ofpbuf_uninit(request); |
4685 | return error; | |
4686 | } | |
4687 | ||
f8500004 JP |
4688 | /* Adds or deletes a root ingress qdisc on 'netdev'. We use this for |
4689 | * policing configuration. | |
4690 | * | |
4691 | * This function is equivalent to running the following when 'add' is true: | |
4692 | * /sbin/tc qdisc add dev <devname> handle ffff: ingress | |
4693 | * | |
4694 | * This function is equivalent to running the following when 'add' is false: | |
4695 | * /sbin/tc qdisc del dev <devname> handle ffff: ingress | |
4696 | * | |
4697 | * The configuration and stats may be seen with the following command: | |
4698 | * /sbin/tc -s qdisc show dev <devname> | |
4699 | * | |
4700 | * Returns 0 if successful, otherwise a positive errno value. | |
4701 | */ | |
4702 | static int | |
4703 | tc_add_del_ingress_qdisc(struct netdev *netdev, bool add) | |
4704 | { | |
4705 | struct ofpbuf request; | |
4706 | struct tcmsg *tcmsg; | |
4707 | int error; | |
4708 | int type = add ? RTM_NEWQDISC : RTM_DELQDISC; | |
4709 | int flags = add ? NLM_F_EXCL | NLM_F_CREATE : 0; | |
4710 | ||
4711 | tcmsg = tc_make_request(netdev, type, flags, &request); | |
4712 | if (!tcmsg) { | |
4713 | return ENODEV; | |
4714 | } | |
4715 | tcmsg->tcm_handle = tc_make_handle(0xffff, 0); | |
4716 | tcmsg->tcm_parent = TC_H_INGRESS; | |
4717 | nl_msg_put_string(&request, TCA_KIND, "ingress"); | |
4718 | nl_msg_put_unspec(&request, TCA_OPTIONS, NULL, 0); | |
4719 | ||
4720 | error = tc_transact(&request, NULL); | |
4721 | if (error) { | |
4722 | /* If we're deleting the qdisc, don't worry about some of the | |
4723 | * error conditions. */ | |
4724 | if (!add && (error == ENOENT || error == EINVAL)) { | |
4725 | return 0; | |
4726 | } | |
4727 | return error; | |
4728 | } | |
4729 | ||
4730 | return 0; | |
4731 | } | |
4732 | ||
4733 | /* Adds a policer to 'netdev' with a rate of 'kbits_rate' and a burst size | |
4734 | * of 'kbits_burst'. | |
4735 | * | |
4736 | * This function is equivalent to running: | |
4737 | * /sbin/tc filter add dev <devname> parent ffff: protocol all prio 49 | |
4738 | * basic police rate <kbits_rate>kbit burst <kbits_burst>k | |
4739 | * mtu 65535 drop | |
4740 | * | |
4741 | * The configuration and stats may be seen with the following command: | |
c7952afb | 4742 | * /sbin/tc -s filter show dev <devname> parent ffff: |
f8500004 JP |
4743 | * |
4744 | * Returns 0 if successful, otherwise a positive errno value. | |
4745 | */ | |
4746 | static int | |
c7952afb BP |
4747 | tc_add_policer(struct netdev *netdev, |
4748 | uint32_t kbits_rate, uint32_t kbits_burst) | |
f8500004 JP |
4749 | { |
4750 | struct tc_police tc_police; | |
4751 | struct ofpbuf request; | |
4752 | struct tcmsg *tcmsg; | |
4753 | size_t basic_offset; | |
4754 | size_t police_offset; | |
4755 | int error; | |
4756 | int mtu = 65535; | |
4757 | ||
4758 | memset(&tc_police, 0, sizeof tc_police); | |
4759 | tc_police.action = TC_POLICE_SHOT; | |
4760 | tc_police.mtu = mtu; | |
1aca400c | 4761 | tc_fill_rate(&tc_police.rate, ((uint64_t) kbits_rate * 1000)/8, mtu); |
c7952afb | 4762 | |
79abacc8 MAA |
4763 | /* The following appears wrong in one way: In networking a kilobit is |
4764 | * usually 1000 bits but this uses 1024 bits. | |
c7952afb BP |
4765 | * |
4766 | * However if you "fix" those problems then "tc filter show ..." shows | |
4767 | * "125000b", meaning 125,000 bits, when OVS configures it for 1000 kbit == | |
4768 | * 1,000,000 bits, whereas this actually ends up doing the right thing from | |
4769 | * tc's point of view. Whatever. */ | |
4770 | tc_police.burst = tc_bytes_to_ticks( | |
79abacc8 | 4771 | tc_police.rate.rate, MIN(UINT32_MAX / 1024, kbits_burst) * 1024 / 8); |
f8500004 JP |
4772 | |
4773 | tcmsg = tc_make_request(netdev, RTM_NEWTFILTER, | |
4774 | NLM_F_EXCL | NLM_F_CREATE, &request); | |
4775 | if (!tcmsg) { | |
4776 | return ENODEV; | |
4777 | } | |
4778 | tcmsg->tcm_parent = tc_make_handle(0xffff, 0); | |
4779 | tcmsg->tcm_info = tc_make_handle(49, | |
4780 | (OVS_FORCE uint16_t) htons(ETH_P_ALL)); | |
4781 | ||
4782 | nl_msg_put_string(&request, TCA_KIND, "basic"); | |
4783 | basic_offset = nl_msg_start_nested(&request, TCA_OPTIONS); | |
4784 | police_offset = nl_msg_start_nested(&request, TCA_BASIC_POLICE); | |
4785 | nl_msg_put_unspec(&request, TCA_POLICE_TBF, &tc_police, sizeof tc_police); | |
4786 | tc_put_rtab(&request, TCA_POLICE_RATE, &tc_police.rate); | |
4787 | nl_msg_end_nested(&request, police_offset); | |
4788 | nl_msg_end_nested(&request, basic_offset); | |
4789 | ||
4790 | error = tc_transact(&request, NULL); | |
4791 | if (error) { | |
4792 | return error; | |
4793 | } | |
4794 | ||
4795 | return 0; | |
4796 | } | |
4797 | ||
c1c9c9c4 BP |
4798 | static void |
4799 | read_psched(void) | |
4800 | { | |
4801 | /* The values in psched are not individually very meaningful, but they are | |
4802 | * important. The tables below show some values seen in the wild. | |
4803 | * | |
4804 | * Some notes: | |
4805 | * | |
4806 | * - "c" has always been a constant 1000000 since at least Linux 2.4.14. | |
4807 | * (Before that, there are hints that it was 1000000000.) | |
4808 | * | |
4809 | * - "d" can be unrealistically large, see the comment on 'buffer_hz' | |
4810 | * above. | |
4811 | * | |
4812 | * /proc/net/psched | |
4813 | * ----------------------------------- | |
4814 | * [1] 000c8000 000f4240 000f4240 00000064 | |
4815 | * [2] 000003e8 00000400 000f4240 3b9aca00 | |
4816 | * [3] 000003e8 00000400 000f4240 3b9aca00 | |
4817 | * [4] 000003e8 00000400 000f4240 00000064 | |
4818 | * [5] 000003e8 00000040 000f4240 3b9aca00 | |
4819 | * [6] 000003e8 00000040 000f4240 000000f9 | |
4820 | * | |
4821 | * a b c d ticks_per_s buffer_hz | |
4822 | * ------- --------- ---------- ------------- ----------- ------------- | |
4823 | * [1] 819,200 1,000,000 1,000,000 100 819,200 100 | |
4824 | * [2] 1,000 1,024 1,000,000 1,000,000,000 976,562 1,000,000,000 | |
4825 | * [3] 1,000 1,024 1,000,000 1,000,000,000 976,562 1,000,000,000 | |
4826 | * [4] 1,000 1,024 1,000,000 100 976,562 100 | |
4827 | * [5] 1,000 64 1,000,000 1,000,000,000 15,625,000 1,000,000,000 | |
4828 | * [6] 1,000 64 1,000,000 249 15,625,000 249 | |
4829 | * | |
4830 | * [1] 2.6.18-128.1.6.el5.xs5.5.0.505.1024xen from XenServer 5.5.0-24648p | |
4831 | * [2] 2.6.26-1-686-bigmem from Debian lenny | |
4832 | * [3] 2.6.26-2-sparc64 from Debian lenny | |
4833 | * [4] 2.6.27.42-0.1.1.xs5.6.810.44.111163xen from XenServer 5.6.810-31078p | |
4834 | * [5] 2.6.32.21.22 (approx.) from Ubuntu 10.04 on VMware Fusion | |
4835 | * [6] 2.6.34 from kernel.org on KVM | |
4836 | */ | |
23882115 | 4837 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
c1c9c9c4 BP |
4838 | static const char fn[] = "/proc/net/psched"; |
4839 | unsigned int a, b, c, d; | |
4840 | FILE *stream; | |
4841 | ||
23882115 BP |
4842 | if (!ovsthread_once_start(&once)) { |
4843 | return; | |
4844 | } | |
4845 | ||
c1c9c9c4 BP |
4846 | ticks_per_s = 1.0; |
4847 | buffer_hz = 100; | |
4848 | ||
4849 | stream = fopen(fn, "r"); | |
4850 | if (!stream) { | |
10a89ef0 | 4851 | VLOG_WARN("%s: open failed: %s", fn, ovs_strerror(errno)); |
23882115 | 4852 | goto exit; |
c1c9c9c4 BP |
4853 | } |
4854 | ||
4855 | if (fscanf(stream, "%x %x %x %x", &a, &b, &c, &d) != 4) { | |
4856 | VLOG_WARN("%s: read failed", fn); | |
4857 | fclose(stream); | |
23882115 | 4858 | goto exit; |
c1c9c9c4 BP |
4859 | } |
4860 | VLOG_DBG("%s: psched parameters are: %u %u %u %u", fn, a, b, c, d); | |
4861 | fclose(stream); | |
4862 | ||
4863 | if (!a || !c) { | |
4864 | VLOG_WARN("%s: invalid scheduler parameters", fn); | |
23882115 | 4865 | goto exit; |
c1c9c9c4 BP |
4866 | } |
4867 | ||
4868 | ticks_per_s = (double) a * c / b; | |
4869 | if (c == 1000000) { | |
4870 | buffer_hz = d; | |
4871 | } else { | |
4872 | VLOG_WARN("%s: unexpected psched parameters: %u %u %u %u", | |
4873 | fn, a, b, c, d); | |
4874 | } | |
4875 | VLOG_DBG("%s: ticks_per_s=%f buffer_hz=%u", fn, ticks_per_s, buffer_hz); | |
23882115 BP |
4876 | |
4877 | exit: | |
4878 | ovsthread_once_done(&once); | |
c1c9c9c4 BP |
4879 | } |
4880 | ||
4881 | /* Returns the number of bytes that can be transmitted in 'ticks' ticks at a | |
4882 | * rate of 'rate' bytes per second. */ | |
4883 | static unsigned int | |
4884 | tc_ticks_to_bytes(unsigned int rate, unsigned int ticks) | |
4885 | { | |
23882115 | 4886 | read_psched(); |
c1c9c9c4 BP |
4887 | return (rate * ticks) / ticks_per_s; |
4888 | } | |
4889 | ||
4890 | /* Returns the number of ticks that it would take to transmit 'size' bytes at a | |
4891 | * rate of 'rate' bytes per second. */ | |
4892 | static unsigned int | |
4893 | tc_bytes_to_ticks(unsigned int rate, unsigned int size) | |
4894 | { | |
23882115 | 4895 | read_psched(); |
015c93a4 | 4896 | return rate ? ((unsigned long long int) ticks_per_s * size) / rate : 0; |
c1c9c9c4 BP |
4897 | } |
4898 | ||
4899 | /* Returns the number of bytes that need to be reserved for qdisc buffering at | |
4900 | * a transmission rate of 'rate' bytes per second. */ | |
4901 | static unsigned int | |
4902 | tc_buffer_per_jiffy(unsigned int rate) | |
4903 | { | |
23882115 | 4904 | read_psched(); |
c1c9c9c4 BP |
4905 | return rate / buffer_hz; |
4906 | } | |
4907 | ||
4908 | /* Given Netlink 'msg' that describes a qdisc, extracts the name of the qdisc, | |
4909 | * e.g. "htb", into '*kind' (if it is nonnull). If 'options' is nonnull, | |
4910 | * extracts 'msg''s TCA_OPTIONS attributes into '*options' if it is present or | |
4911 | * stores NULL into it if it is absent. | |
4912 | * | |
4913 | * '*kind' and '*options' point into 'msg', so they are owned by whoever owns | |
4914 | * 'msg'. | |
4915 | * | |
4916 | * Returns 0 if successful, otherwise a positive errno value. */ | |
4917 | static int | |
4918 | tc_parse_qdisc(const struct ofpbuf *msg, const char **kind, | |
4919 | struct nlattr **options) | |
4920 | { | |
4921 | static const struct nl_policy tca_policy[] = { | |
4922 | [TCA_KIND] = { .type = NL_A_STRING, .optional = false }, | |
4923 | [TCA_OPTIONS] = { .type = NL_A_NESTED, .optional = true }, | |
4924 | }; | |
4925 | struct nlattr *ta[ARRAY_SIZE(tca_policy)]; | |
4926 | ||
4927 | if (!nl_policy_parse(msg, NLMSG_HDRLEN + sizeof(struct tcmsg), | |
4928 | tca_policy, ta, ARRAY_SIZE(ta))) { | |
4929 | VLOG_WARN_RL(&rl, "failed to parse qdisc message"); | |
4930 | goto error; | |
4931 | } | |
4932 | ||
4933 | if (kind) { | |
4934 | *kind = nl_attr_get_string(ta[TCA_KIND]); | |
4935 | } | |
4936 | ||
4937 | if (options) { | |
4938 | *options = ta[TCA_OPTIONS]; | |
4939 | } | |
4940 | ||
4941 | return 0; | |
4942 | ||
4943 | error: | |
4944 | if (kind) { | |
4945 | *kind = NULL; | |
4946 | } | |
4947 | if (options) { | |
4948 | *options = NULL; | |
4949 | } | |
4950 | return EPROTO; | |
4951 | } | |
4952 | ||
4953 | /* Given Netlink 'msg' that describes a class, extracts the queue ID (e.g. the | |
4954 | * minor number of its class ID) into '*queue_id', its TCA_OPTIONS attribute | |
4955 | * into '*options', and its queue statistics into '*stats'. Any of the output | |
4956 | * arguments may be null. | |
4957 | * | |
4958 | * Returns 0 if successful, otherwise a positive errno value. */ | |
4959 | static int | |
4960 | tc_parse_class(const struct ofpbuf *msg, unsigned int *handlep, | |
4961 | struct nlattr **options, struct netdev_queue_stats *stats) | |
4962 | { | |
4963 | static const struct nl_policy tca_policy[] = { | |
4964 | [TCA_OPTIONS] = { .type = NL_A_NESTED, .optional = false }, | |
4965 | [TCA_STATS2] = { .type = NL_A_NESTED, .optional = false }, | |
4966 | }; | |
4967 | struct nlattr *ta[ARRAY_SIZE(tca_policy)]; | |
4968 | ||
4969 | if (!nl_policy_parse(msg, NLMSG_HDRLEN + sizeof(struct tcmsg), | |
4970 | tca_policy, ta, ARRAY_SIZE(ta))) { | |
4971 | VLOG_WARN_RL(&rl, "failed to parse class message"); | |
4972 | goto error; | |
4973 | } | |
4974 | ||
4975 | if (handlep) { | |
4976 | struct tcmsg *tc = ofpbuf_at_assert(msg, NLMSG_HDRLEN, sizeof *tc); | |
4977 | *handlep = tc->tcm_handle; | |
4978 | } | |
4979 | ||
4980 | if (options) { | |
4981 | *options = ta[TCA_OPTIONS]; | |
4982 | } | |
4983 | ||
4984 | if (stats) { | |
4985 | const struct gnet_stats_queue *gsq; | |
4986 | struct gnet_stats_basic gsb; | |
4987 | ||
4988 | static const struct nl_policy stats_policy[] = { | |
4989 | [TCA_STATS_BASIC] = { .type = NL_A_UNSPEC, .optional = false, | |
4990 | .min_len = sizeof gsb }, | |
4991 | [TCA_STATS_QUEUE] = { .type = NL_A_UNSPEC, .optional = false, | |
4992 | .min_len = sizeof *gsq }, | |
4993 | }; | |
4994 | struct nlattr *sa[ARRAY_SIZE(stats_policy)]; | |
4995 | ||
4996 | if (!nl_parse_nested(ta[TCA_STATS2], stats_policy, | |
4997 | sa, ARRAY_SIZE(sa))) { | |
4998 | VLOG_WARN_RL(&rl, "failed to parse class stats"); | |
4999 | goto error; | |
5000 | } | |
5001 | ||
5002 | /* Alignment issues screw up the length of struct gnet_stats_basic on | |
5003 | * some arch/bitsize combinations. Newer versions of Linux have a | |
5004 | * struct gnet_stats_basic_packed, but we can't depend on that. The | |
5005 | * easiest thing to do is just to make a copy. */ | |
5006 | memset(&gsb, 0, sizeof gsb); | |
5007 | memcpy(&gsb, nl_attr_get(sa[TCA_STATS_BASIC]), | |
5008 | MIN(nl_attr_get_size(sa[TCA_STATS_BASIC]), sizeof gsb)); | |
5009 | stats->tx_bytes = gsb.bytes; | |
5010 | stats->tx_packets = gsb.packets; | |
5011 | ||
5012 | gsq = nl_attr_get(sa[TCA_STATS_QUEUE]); | |
5013 | stats->tx_errors = gsq->drops; | |
5014 | } | |
5015 | ||
5016 | return 0; | |
5017 | ||
5018 | error: | |
5019 | if (options) { | |
5020 | *options = NULL; | |
5021 | } | |
5022 | if (stats) { | |
5023 | memset(stats, 0, sizeof *stats); | |
5024 | } | |
5025 | return EPROTO; | |
5026 | } | |
5027 | ||
5028 | /* Queries the kernel for class with identifier 'handle' and parent 'parent' | |
5029 | * on 'netdev'. */ | |
5030 | static int | |
5031 | tc_query_class(const struct netdev *netdev, | |
5032 | unsigned int handle, unsigned int parent, | |
5033 | struct ofpbuf **replyp) | |
5034 | { | |
5035 | struct ofpbuf request; | |
5036 | struct tcmsg *tcmsg; | |
5037 | int error; | |
5038 | ||
5039 | tcmsg = tc_make_request(netdev, RTM_GETTCLASS, NLM_F_ECHO, &request); | |
23a98ffe BP |
5040 | if (!tcmsg) { |
5041 | return ENODEV; | |
5042 | } | |
c1c9c9c4 BP |
5043 | tcmsg->tcm_handle = handle; |
5044 | tcmsg->tcm_parent = parent; | |
5045 | ||
5046 | error = tc_transact(&request, replyp); | |
5047 | if (error) { | |
5048 | VLOG_WARN_RL(&rl, "query %s class %u:%u (parent %u:%u) failed (%s)", | |
5049 | netdev_get_name(netdev), | |
5050 | tc_get_major(handle), tc_get_minor(handle), | |
5051 | tc_get_major(parent), tc_get_minor(parent), | |
10a89ef0 | 5052 | ovs_strerror(error)); |
c1c9c9c4 BP |
5053 | } |
5054 | return error; | |
5055 | } | |
5056 | ||
5057 | /* Equivalent to "tc class del dev <name> handle <handle>". */ | |
5058 | static int | |
5059 | tc_delete_class(const struct netdev *netdev, unsigned int handle) | |
5060 | { | |
5061 | struct ofpbuf request; | |
5062 | struct tcmsg *tcmsg; | |
5063 | int error; | |
5064 | ||
5065 | tcmsg = tc_make_request(netdev, RTM_DELTCLASS, 0, &request); | |
23a98ffe BP |
5066 | if (!tcmsg) { |
5067 | return ENODEV; | |
5068 | } | |
c1c9c9c4 BP |
5069 | tcmsg->tcm_handle = handle; |
5070 | tcmsg->tcm_parent = 0; | |
5071 | ||
5072 | error = tc_transact(&request, NULL); | |
5073 | if (error) { | |
5074 | VLOG_WARN_RL(&rl, "delete %s class %u:%u failed (%s)", | |
5075 | netdev_get_name(netdev), | |
5076 | tc_get_major(handle), tc_get_minor(handle), | |
10a89ef0 | 5077 | ovs_strerror(error)); |
c1c9c9c4 BP |
5078 | } |
5079 | return error; | |
5080 | } | |
5081 | ||
5082 | /* Equivalent to "tc qdisc del dev <name> root". */ | |
5083 | static int | |
b5d57fc8 | 5084 | tc_del_qdisc(struct netdev *netdev_) |
c1c9c9c4 | 5085 | { |
b5d57fc8 | 5086 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
5087 | struct ofpbuf request; |
5088 | struct tcmsg *tcmsg; | |
5089 | int error; | |
5090 | ||
b5d57fc8 | 5091 | tcmsg = tc_make_request(netdev_, RTM_DELQDISC, 0, &request); |
23a98ffe BP |
5092 | if (!tcmsg) { |
5093 | return ENODEV; | |
5094 | } | |
c1c9c9c4 BP |
5095 | tcmsg->tcm_handle = tc_make_handle(1, 0); |
5096 | tcmsg->tcm_parent = TC_H_ROOT; | |
5097 | ||
5098 | error = tc_transact(&request, NULL); | |
5099 | if (error == EINVAL) { | |
5100 | /* EINVAL probably means that the default qdisc was in use, in which | |
5101 | * case we've accomplished our purpose. */ | |
5102 | error = 0; | |
5103 | } | |
b5d57fc8 BP |
5104 | if (!error && netdev->tc) { |
5105 | if (netdev->tc->ops->tc_destroy) { | |
5106 | netdev->tc->ops->tc_destroy(netdev->tc); | |
c1c9c9c4 | 5107 | } |
b5d57fc8 | 5108 | netdev->tc = NULL; |
c1c9c9c4 BP |
5109 | } |
5110 | return error; | |
5111 | } | |
5112 | ||
ac3e3aaa BP |
5113 | static bool |
5114 | getqdisc_is_safe(void) | |
5115 | { | |
5116 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; | |
5117 | static bool safe = false; | |
5118 | ||
5119 | if (ovsthread_once_start(&once)) { | |
5120 | struct utsname utsname; | |
5121 | int major, minor; | |
5122 | ||
5123 | if (uname(&utsname) == -1) { | |
5124 | VLOG_WARN("uname failed (%s)", ovs_strerror(errno)); | |
5125 | } else if (!ovs_scan(utsname.release, "%d.%d", &major, &minor)) { | |
5126 | VLOG_WARN("uname reported bad OS release (%s)", utsname.release); | |
5127 | } else if (major < 2 || (major == 2 && minor < 35)) { | |
5128 | VLOG_INFO("disabling unsafe RTM_GETQDISC in Linux kernel %s", | |
5129 | utsname.release); | |
5130 | } else { | |
5131 | safe = true; | |
5132 | } | |
5133 | ovsthread_once_done(&once); | |
5134 | } | |
5135 | return safe; | |
5136 | } | |
5137 | ||
c1c9c9c4 BP |
5138 | /* If 'netdev''s qdisc type and parameters are not yet known, queries the |
5139 | * kernel to determine what they are. Returns 0 if successful, otherwise a | |
5140 | * positive errno value. */ | |
5141 | static int | |
b5d57fc8 | 5142 | tc_query_qdisc(const struct netdev *netdev_) |
c1c9c9c4 | 5143 | { |
b5d57fc8 | 5144 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c1c9c9c4 BP |
5145 | struct ofpbuf request, *qdisc; |
5146 | const struct tc_ops *ops; | |
5147 | struct tcmsg *tcmsg; | |
5148 | int load_error; | |
5149 | int error; | |
5150 | ||
b5d57fc8 | 5151 | if (netdev->tc) { |
c1c9c9c4 BP |
5152 | return 0; |
5153 | } | |
5154 | ||
5155 | /* This RTM_GETQDISC is crafted to avoid OOPSing kernels that do not have | |
5156 | * commit 53b0f08 "net_sched: Fix qdisc_notify()", which is anything before | |
5157 | * 2.6.35 without that fix backported to it. | |
5158 | * | |
5159 | * To avoid the OOPS, we must not make a request that would attempt to dump | |
5160 | * a "built-in" qdisc, that is, the default pfifo_fast qdisc or one of a | |
5161 | * few others. There are a few ways that I can see to do this, but most of | |
5162 | * them seem to be racy (and if you lose the race the kernel OOPSes). The | |
5163 | * technique chosen here is to assume that any non-default qdisc that we | |
5164 | * create will have a class with handle 1:0. The built-in qdiscs only have | |
5165 | * a class with handle 0:0. | |
5166 | * | |
ac3e3aaa BP |
5167 | * On Linux 2.6.35+ we use the straightforward method because it allows us |
5168 | * to handle non-builtin qdiscs without handle 1:0 (e.g. codel). However, | |
5169 | * in such a case we get no response at all from the kernel (!) if a | |
5170 | * builtin qdisc is in use (which is later caught by "!error && | |
5171 | * !qdisc->size"). */ | |
b5d57fc8 | 5172 | tcmsg = tc_make_request(netdev_, RTM_GETQDISC, NLM_F_ECHO, &request); |
23a98ffe BP |
5173 | if (!tcmsg) { |
5174 | return ENODEV; | |
5175 | } | |
ac3e3aaa BP |
5176 | tcmsg->tcm_handle = tc_make_handle(getqdisc_is_safe() ? 0 : 1, 0); |
5177 | tcmsg->tcm_parent = getqdisc_is_safe() ? TC_H_ROOT : 0; | |
c1c9c9c4 BP |
5178 | |
5179 | /* Figure out what tc class to instantiate. */ | |
5180 | error = tc_transact(&request, &qdisc); | |
ac3e3aaa | 5181 | if (!error && qdisc->size) { |
c1c9c9c4 BP |
5182 | const char *kind; |
5183 | ||
5184 | error = tc_parse_qdisc(qdisc, &kind, NULL); | |
5185 | if (error) { | |
5186 | ops = &tc_ops_other; | |
5187 | } else { | |
5188 | ops = tc_lookup_linux_name(kind); | |
5189 | if (!ops) { | |
5190 | static struct vlog_rate_limit rl2 = VLOG_RATE_LIMIT_INIT(1, 1); | |
ac3e3aaa | 5191 | VLOG_DBG_RL(&rl2, "unknown qdisc \"%s\"", kind); |
c1c9c9c4 BP |
5192 | |
5193 | ops = &tc_ops_other; | |
5194 | } | |
5195 | } | |
ac3e3aaa BP |
5196 | } else if ((!error && !qdisc->size) || error == ENOENT) { |
5197 | /* Either it's a built-in qdisc, or (on Linux pre-2.6.35) it's a qdisc | |
5198 | * set up by some other entity that doesn't have a handle 1:0. We will | |
5199 | * assume that it's the system default qdisc. */ | |
c1c9c9c4 BP |
5200 | ops = &tc_ops_default; |
5201 | error = 0; | |
5202 | } else { | |
5203 | /* Who knows? Maybe the device got deleted. */ | |
5204 | VLOG_WARN_RL(&rl, "query %s qdisc failed (%s)", | |
10a89ef0 | 5205 | netdev_get_name(netdev_), ovs_strerror(error)); |
c1c9c9c4 BP |
5206 | ops = &tc_ops_other; |
5207 | } | |
5208 | ||
5209 | /* Instantiate it. */ | |
b5d57fc8 BP |
5210 | load_error = ops->tc_load(CONST_CAST(struct netdev *, netdev_), qdisc); |
5211 | ovs_assert((load_error == 0) == (netdev->tc != NULL)); | |
c1c9c9c4 BP |
5212 | ofpbuf_delete(qdisc); |
5213 | ||
5214 | return error ? error : load_error; | |
5215 | } | |
5216 | ||
5217 | /* Linux traffic control uses tables with 256 entries ("rtab" tables) to | |
5218 | approximate the time to transmit packets of various lengths. For an MTU of | |
5219 | 256 or less, each entry is exact; for an MTU of 257 through 512, each entry | |
5220 | represents two possible packet lengths; for a MTU of 513 through 1024, four | |
5221 | possible lengths; and so on. | |
5222 | ||
5223 | Returns, for the specified 'mtu', the number of bits that packet lengths | |
5224 | need to be shifted right to fit within such a 256-entry table. */ | |
5225 | static int | |
5226 | tc_calc_cell_log(unsigned int mtu) | |
5227 | { | |
5228 | int cell_log; | |
5229 | ||
5230 | if (!mtu) { | |
5231 | mtu = ETH_PAYLOAD_MAX; | |
5232 | } | |
5233 | mtu += ETH_HEADER_LEN + VLAN_HEADER_LEN; | |
5234 | ||
5235 | for (cell_log = 0; mtu >= 256; cell_log++) { | |
5236 | mtu >>= 1; | |
5237 | } | |
5238 | ||
5239 | return cell_log; | |
5240 | } | |
5241 | ||
5242 | /* Initializes 'rate' properly for a rate of 'Bps' bytes per second with an MTU | |
5243 | * of 'mtu'. */ | |
5244 | static void | |
5245 | tc_fill_rate(struct tc_ratespec *rate, uint64_t Bps, int mtu) | |
5246 | { | |
5247 | memset(rate, 0, sizeof *rate); | |
5248 | rate->cell_log = tc_calc_cell_log(mtu); | |
5249 | /* rate->overhead = 0; */ /* New in 2.6.24, not yet in some */ | |
5250 | /* rate->cell_align = 0; */ /* distro headers. */ | |
5251 | rate->mpu = ETH_TOTAL_MIN; | |
5252 | rate->rate = Bps; | |
5253 | } | |
5254 | ||
5255 | /* Appends to 'msg' an "rtab" table for the specified 'rate' as a Netlink | |
5256 | * attribute of the specified "type". | |
5257 | * | |
5258 | * See tc_calc_cell_log() above for a description of "rtab"s. */ | |
5259 | static void | |
5260 | tc_put_rtab(struct ofpbuf *msg, uint16_t type, const struct tc_ratespec *rate) | |
5261 | { | |
5262 | uint32_t *rtab; | |
5263 | unsigned int i; | |
5264 | ||
5265 | rtab = nl_msg_put_unspec_uninit(msg, type, TC_RTAB_SIZE); | |
5266 | for (i = 0; i < TC_RTAB_SIZE / sizeof *rtab; i++) { | |
5267 | unsigned packet_size = (i + 1) << rate->cell_log; | |
5268 | if (packet_size < rate->mpu) { | |
5269 | packet_size = rate->mpu; | |
5270 | } | |
5271 | rtab[i] = tc_bytes_to_ticks(rate->rate, packet_size); | |
5272 | } | |
5273 | } | |
5274 | ||
5275 | /* Calculates the proper value of 'buffer' or 'cbuffer' in HTB options given a | |
5276 | * rate of 'Bps' bytes per second, the specified 'mtu', and a user-requested | |
5277 | * burst size of 'burst_bytes'. (If no value was requested, a 'burst_bytes' of | |
015c93a4 | 5278 | * 0 is fine.) */ |
c1c9c9c4 BP |
5279 | static int |
5280 | tc_calc_buffer(unsigned int Bps, int mtu, uint64_t burst_bytes) | |
5281 | { | |
5282 | unsigned int min_burst = tc_buffer_per_jiffy(Bps) + mtu; | |
5283 | return tc_bytes_to_ticks(Bps, MAX(burst_bytes, min_burst)); | |
5284 | } | |
d3980822 | 5285 | \f |
aaf2fb1a BP |
5286 | /* Linux-only functions declared in netdev-linux.h */ |
5287 | ||
5288 | /* Modifies the 'flag' bit in ethtool's flags field for 'netdev'. If | |
5289 | * 'enable' is true, the bit is set. Otherwise, it is cleared. */ | |
5290 | int | |
5291 | netdev_linux_ethtool_set_flag(struct netdev *netdev, uint32_t flag, | |
5292 | const char *flag_name, bool enable) | |
5293 | { | |
5294 | const char *netdev_name = netdev_get_name(netdev); | |
5295 | struct ethtool_value evalue; | |
5296 | uint32_t new_flags; | |
5297 | int error; | |
5298 | ||
ab985a77 | 5299 | COVERAGE_INC(netdev_get_ethtool); |
aaf2fb1a BP |
5300 | memset(&evalue, 0, sizeof evalue); |
5301 | error = netdev_linux_do_ethtool(netdev_name, | |
5302 | (struct ethtool_cmd *)&evalue, | |
5303 | ETHTOOL_GFLAGS, "ETHTOOL_GFLAGS"); | |
5304 | if (error) { | |
5305 | return error; | |
5306 | } | |
5307 | ||
ab985a77 | 5308 | COVERAGE_INC(netdev_set_ethtool); |
ad2dade5 AS |
5309 | new_flags = (evalue.data & ~flag) | (enable ? flag : 0); |
5310 | if (new_flags == evalue.data) { | |
5311 | return 0; | |
5312 | } | |
5313 | evalue.data = new_flags; | |
aaf2fb1a BP |
5314 | error = netdev_linux_do_ethtool(netdev_name, |
5315 | (struct ethtool_cmd *)&evalue, | |
5316 | ETHTOOL_SFLAGS, "ETHTOOL_SFLAGS"); | |
5317 | if (error) { | |
5318 | return error; | |
5319 | } | |
5320 | ||
ab985a77 | 5321 | COVERAGE_INC(netdev_get_ethtool); |
aaf2fb1a BP |
5322 | memset(&evalue, 0, sizeof evalue); |
5323 | error = netdev_linux_do_ethtool(netdev_name, | |
5324 | (struct ethtool_cmd *)&evalue, | |
5325 | ETHTOOL_GFLAGS, "ETHTOOL_GFLAGS"); | |
5326 | if (error) { | |
5327 | return error; | |
5328 | } | |
5329 | ||
5330 | if (new_flags != evalue.data) { | |
5331 | VLOG_WARN_RL(&rl, "attempt to %s ethtool %s flag on network " | |
5332 | "device %s failed", enable ? "enable" : "disable", | |
5333 | flag_name, netdev_name); | |
5334 | return EOPNOTSUPP; | |
5335 | } | |
5336 | ||
5337 | return 0; | |
5338 | } | |
5339 | \f | |
5340 | /* Utility functions. */ | |
5341 | ||
d3980822 | 5342 | /* Copies 'src' into 'dst', performing format conversion in the process. */ |
f613a0d7 | 5343 | static void |
d3980822 BP |
5344 | netdev_stats_from_rtnl_link_stats(struct netdev_stats *dst, |
5345 | const struct rtnl_link_stats *src) | |
5346 | { | |
f613a0d7 PS |
5347 | dst->rx_packets = src->rx_packets; |
5348 | dst->tx_packets = src->tx_packets; | |
5349 | dst->rx_bytes = src->rx_bytes; | |
5350 | dst->tx_bytes = src->tx_bytes; | |
5351 | dst->rx_errors = src->rx_errors; | |
5352 | dst->tx_errors = src->tx_errors; | |
5353 | dst->rx_dropped = src->rx_dropped; | |
5354 | dst->tx_dropped = src->tx_dropped; | |
5355 | dst->multicast = src->multicast; | |
5356 | dst->collisions = src->collisions; | |
5357 | dst->rx_length_errors = src->rx_length_errors; | |
5358 | dst->rx_over_errors = src->rx_over_errors; | |
5359 | dst->rx_crc_errors = src->rx_crc_errors; | |
5360 | dst->rx_frame_errors = src->rx_frame_errors; | |
5361 | dst->rx_fifo_errors = src->rx_fifo_errors; | |
5362 | dst->rx_missed_errors = src->rx_missed_errors; | |
5363 | dst->tx_aborted_errors = src->tx_aborted_errors; | |
5364 | dst->tx_carrier_errors = src->tx_carrier_errors; | |
5365 | dst->tx_fifo_errors = src->tx_fifo_errors; | |
5366 | dst->tx_heartbeat_errors = src->tx_heartbeat_errors; | |
5367 | dst->tx_window_errors = src->tx_window_errors; | |
d3980822 BP |
5368 | } |
5369 | ||
337c9b99 BP |
5370 | /* Copies 'src' into 'dst', performing format conversion in the process. */ |
5371 | static void | |
5372 | netdev_stats_from_rtnl_link_stats64(struct netdev_stats *dst, | |
5373 | const struct rtnl_link_stats64 *src) | |
5374 | { | |
5375 | dst->rx_packets = src->rx_packets; | |
5376 | dst->tx_packets = src->tx_packets; | |
5377 | dst->rx_bytes = src->rx_bytes; | |
5378 | dst->tx_bytes = src->tx_bytes; | |
5379 | dst->rx_errors = src->rx_errors; | |
5380 | dst->tx_errors = src->tx_errors; | |
5381 | dst->rx_dropped = src->rx_dropped; | |
5382 | dst->tx_dropped = src->tx_dropped; | |
5383 | dst->multicast = src->multicast; | |
5384 | dst->collisions = src->collisions; | |
5385 | dst->rx_length_errors = src->rx_length_errors; | |
5386 | dst->rx_over_errors = src->rx_over_errors; | |
5387 | dst->rx_crc_errors = src->rx_crc_errors; | |
5388 | dst->rx_frame_errors = src->rx_frame_errors; | |
5389 | dst->rx_fifo_errors = src->rx_fifo_errors; | |
5390 | dst->rx_missed_errors = src->rx_missed_errors; | |
5391 | dst->tx_aborted_errors = src->tx_aborted_errors; | |
5392 | dst->tx_carrier_errors = src->tx_carrier_errors; | |
5393 | dst->tx_fifo_errors = src->tx_fifo_errors; | |
5394 | dst->tx_heartbeat_errors = src->tx_heartbeat_errors; | |
5395 | dst->tx_window_errors = src->tx_window_errors; | |
5396 | } | |
5397 | ||
c1c9c9c4 | 5398 | static int |
35eef899 | 5399 | get_stats_via_netlink(const struct netdev *netdev_, struct netdev_stats *stats) |
c1c9c9c4 | 5400 | { |
c1c9c9c4 BP |
5401 | struct ofpbuf request; |
5402 | struct ofpbuf *reply; | |
c1c9c9c4 BP |
5403 | int error; |
5404 | ||
d6e3feb5 | 5405 | /* Filtering all counters by default */ |
5406 | memset(stats, 0xFF, sizeof(struct netdev_stats)); | |
5407 | ||
c1c9c9c4 | 5408 | ofpbuf_init(&request, 0); |
13a24df8 BP |
5409 | nl_msg_put_nlmsghdr(&request, |
5410 | sizeof(struct ifinfomsg) + NL_ATTR_SIZE(IFNAMSIZ), | |
5411 | RTM_GETLINK, NLM_F_REQUEST); | |
5412 | ofpbuf_put_zeros(&request, sizeof(struct ifinfomsg)); | |
5413 | nl_msg_put_string(&request, IFLA_IFNAME, netdev_get_name(netdev_)); | |
a88b4e04 | 5414 | error = nl_transact(NETLINK_ROUTE, &request, &reply); |
c1c9c9c4 BP |
5415 | ofpbuf_uninit(&request); |
5416 | if (error) { | |
5417 | return error; | |
5418 | } | |
5419 | ||
13a24df8 | 5420 | if (ofpbuf_try_pull(reply, NLMSG_HDRLEN + sizeof(struct ifinfomsg))) { |
337c9b99 BP |
5421 | const struct nlattr *a = nl_attr_find(reply, 0, IFLA_STATS64); |
5422 | if (a && nl_attr_get_size(a) >= sizeof(struct rtnl_link_stats64)) { | |
5423 | netdev_stats_from_rtnl_link_stats64(stats, nl_attr_get(a)); | |
13a24df8 BP |
5424 | error = 0; |
5425 | } else { | |
337c9b99 BP |
5426 | const struct nlattr *a = nl_attr_find(reply, 0, IFLA_STATS); |
5427 | if (a && nl_attr_get_size(a) >= sizeof(struct rtnl_link_stats)) { | |
5428 | netdev_stats_from_rtnl_link_stats(stats, nl_attr_get(a)); | |
5429 | error = 0; | |
5430 | } else { | |
5431 | VLOG_WARN_RL(&rl, "RTM_GETLINK reply lacks stats"); | |
5432 | error = EPROTO; | |
5433 | } | |
13a24df8 BP |
5434 | } |
5435 | } else { | |
5436 | VLOG_WARN_RL(&rl, "short RTM_GETLINK reply"); | |
5437 | error = EPROTO; | |
c1c9c9c4 | 5438 | } |
8b61709d | 5439 | |
8b61709d | 5440 | |
576e26d7 | 5441 | ofpbuf_delete(reply); |
35eef899 | 5442 | return error; |
8b61709d | 5443 | } |
c1c9c9c4 | 5444 | |
3a183124 | 5445 | static int |
b5d57fc8 | 5446 | get_flags(const struct netdev *dev, unsigned int *flags) |
8b61709d BP |
5447 | { |
5448 | struct ifreq ifr; | |
5449 | int error; | |
5450 | ||
755be9ea | 5451 | *flags = 0; |
259e0b1a | 5452 | error = af_inet_ifreq_ioctl(dev->name, &ifr, SIOCGIFFLAGS, "SIOCGIFFLAGS"); |
755be9ea EJ |
5453 | if (!error) { |
5454 | *flags = ifr.ifr_flags; | |
5455 | } | |
8b61709d BP |
5456 | return error; |
5457 | } | |
5458 | ||
5459 | static int | |
4b609110 | 5460 | set_flags(const char *name, unsigned int flags) |
8b61709d BP |
5461 | { |
5462 | struct ifreq ifr; | |
5463 | ||
5464 | ifr.ifr_flags = flags; | |
259e0b1a | 5465 | return af_inet_ifreq_ioctl(name, &ifr, SIOCSIFFLAGS, "SIOCSIFFLAGS"); |
8b61709d BP |
5466 | } |
5467 | ||
5468 | static int | |
5469 | do_get_ifindex(const char *netdev_name) | |
5470 | { | |
5471 | struct ifreq ifr; | |
259e0b1a | 5472 | int error; |
8b61709d | 5473 | |
71d7c22f | 5474 | ovs_strzcpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name); |
8b61709d | 5475 | COVERAGE_INC(netdev_get_ifindex); |
259e0b1a BP |
5476 | |
5477 | error = af_inet_ioctl(SIOCGIFINDEX, &ifr); | |
5478 | if (error) { | |
8b61709d | 5479 | VLOG_WARN_RL(&rl, "ioctl(SIOCGIFINDEX) on %s device failed: %s", |
259e0b1a BP |
5480 | netdev_name, ovs_strerror(error)); |
5481 | return -error; | |
8b61709d BP |
5482 | } |
5483 | return ifr.ifr_ifindex; | |
5484 | } | |
5485 | ||
5486 | static int | |
5487 | get_ifindex(const struct netdev *netdev_, int *ifindexp) | |
5488 | { | |
b5d57fc8 | 5489 | struct netdev_linux *netdev = netdev_linux_cast(netdev_); |
c7b1b0a5 | 5490 | |
b5d57fc8 | 5491 | if (!(netdev->cache_valid & VALID_IFINDEX)) { |
8b61709d | 5492 | int ifindex = do_get_ifindex(netdev_get_name(netdev_)); |
c7b1b0a5 | 5493 | |
8b61709d | 5494 | if (ifindex < 0) { |
b5d57fc8 BP |
5495 | netdev->get_ifindex_error = -ifindex; |
5496 | netdev->ifindex = 0; | |
c7b1b0a5 | 5497 | } else { |
b5d57fc8 BP |
5498 | netdev->get_ifindex_error = 0; |
5499 | netdev->ifindex = ifindex; | |
8b61709d | 5500 | } |
b5d57fc8 | 5501 | netdev->cache_valid |= VALID_IFINDEX; |
8b61709d | 5502 | } |
c7b1b0a5 | 5503 | |
b5d57fc8 BP |
5504 | *ifindexp = netdev->ifindex; |
5505 | return netdev->get_ifindex_error; | |
8b61709d BP |
5506 | } |
5507 | ||
5508 | static int | |
74ff3298 | 5509 | get_etheraddr(const char *netdev_name, struct eth_addr *ea) |
8b61709d BP |
5510 | { |
5511 | struct ifreq ifr; | |
5512 | int hwaddr_family; | |
259e0b1a | 5513 | int error; |
8b61709d BP |
5514 | |
5515 | memset(&ifr, 0, sizeof ifr); | |
71d7c22f | 5516 | ovs_strzcpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name); |
8b61709d | 5517 | COVERAGE_INC(netdev_get_hwaddr); |
259e0b1a BP |
5518 | error = af_inet_ioctl(SIOCGIFHWADDR, &ifr); |
5519 | if (error) { | |
78857dfb BP |
5520 | /* ENODEV probably means that a vif disappeared asynchronously and |
5521 | * hasn't been removed from the database yet, so reduce the log level | |
5522 | * to INFO for that case. */ | |
259e0b1a | 5523 | VLOG(error == ENODEV ? VLL_INFO : VLL_ERR, |
78857dfb | 5524 | "ioctl(SIOCGIFHWADDR) on %s device failed: %s", |
259e0b1a BP |
5525 | netdev_name, ovs_strerror(error)); |
5526 | return error; | |
8b61709d BP |
5527 | } |
5528 | hwaddr_family = ifr.ifr_hwaddr.sa_family; | |
2482b0b0 JS |
5529 | if (hwaddr_family != AF_UNSPEC && hwaddr_family != ARPHRD_ETHER && |
5530 | hwaddr_family != ARPHRD_NONE) { | |
c9697f35 | 5531 | VLOG_INFO("%s device has unknown hardware address family %d", |
8b61709d | 5532 | netdev_name, hwaddr_family); |
c9697f35 | 5533 | return EINVAL; |
8b61709d BP |
5534 | } |
5535 | memcpy(ea, ifr.ifr_hwaddr.sa_data, ETH_ADDR_LEN); | |
5536 | return 0; | |
5537 | } | |
5538 | ||
5539 | static int | |
74ff3298 | 5540 | set_etheraddr(const char *netdev_name, const struct eth_addr mac) |
8b61709d BP |
5541 | { |
5542 | struct ifreq ifr; | |
259e0b1a | 5543 | int error; |
8b61709d BP |
5544 | |
5545 | memset(&ifr, 0, sizeof ifr); | |
71d7c22f | 5546 | ovs_strzcpy(ifr.ifr_name, netdev_name, sizeof ifr.ifr_name); |
44445cac | 5547 | ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; |
74ff3298 | 5548 | memcpy(ifr.ifr_hwaddr.sa_data, &mac, ETH_ADDR_LEN); |
8b61709d | 5549 | COVERAGE_INC(netdev_set_hwaddr); |
259e0b1a BP |
5550 | error = af_inet_ioctl(SIOCSIFHWADDR, &ifr); |
5551 | if (error) { | |
8b61709d | 5552 | VLOG_ERR("ioctl(SIOCSIFHWADDR) on %s device failed: %s", |
259e0b1a | 5553 | netdev_name, ovs_strerror(error)); |
8b61709d | 5554 | } |
259e0b1a | 5555 | return error; |
8b61709d BP |
5556 | } |
5557 | ||
5558 | static int | |
0b0544d7 | 5559 | netdev_linux_do_ethtool(const char *name, struct ethtool_cmd *ecmd, |
8b61709d BP |
5560 | int cmd, const char *cmd_name) |
5561 | { | |
5562 | struct ifreq ifr; | |
259e0b1a | 5563 | int error; |
8b61709d BP |
5564 | |
5565 | memset(&ifr, 0, sizeof ifr); | |
71d7c22f | 5566 | ovs_strzcpy(ifr.ifr_name, name, sizeof ifr.ifr_name); |
8b61709d BP |
5567 | ifr.ifr_data = (caddr_t) ecmd; |
5568 | ||
5569 | ecmd->cmd = cmd; | |
259e0b1a BP |
5570 | error = af_inet_ioctl(SIOCETHTOOL, &ifr); |
5571 | if (error) { | |
5572 | if (error != EOPNOTSUPP) { | |
8b61709d | 5573 | VLOG_WARN_RL(&rl, "ethtool command %s on network device %s " |
259e0b1a | 5574 | "failed: %s", cmd_name, name, ovs_strerror(error)); |
8b61709d BP |
5575 | } else { |
5576 | /* The device doesn't support this operation. That's pretty | |
5577 | * common, so there's no point in logging anything. */ | |
5578 | } | |
8b61709d | 5579 | } |
259e0b1a | 5580 | return error; |
8b61709d | 5581 | } |
f1acd62b | 5582 | |
488d734d BP |
5583 | /* Returns an AF_PACKET raw socket or a negative errno value. */ |
5584 | static int | |
5585 | af_packet_sock(void) | |
5586 | { | |
23882115 BP |
5587 | static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; |
5588 | static int sock; | |
488d734d | 5589 | |
23882115 | 5590 | if (ovsthread_once_start(&once)) { |
488d734d BP |
5591 | sock = socket(AF_PACKET, SOCK_RAW, 0); |
5592 | if (sock >= 0) { | |
8450059e BP |
5593 | int error = set_nonblocking(sock); |
5594 | if (error) { | |
5595 | close(sock); | |
5596 | sock = -error; | |
5597 | } | |
488d734d BP |
5598 | } else { |
5599 | sock = -errno; | |
10a89ef0 BP |
5600 | VLOG_ERR("failed to create packet socket: %s", |
5601 | ovs_strerror(errno)); | |
488d734d | 5602 | } |
23882115 | 5603 | ovsthread_once_done(&once); |
488d734d BP |
5604 | } |
5605 | ||
5606 | return sock; | |
5607 | } |