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4b292b55 | 1 | /* -*- mode: c; c-file-style: "openbsd" -*- */ |
6e75df87 VB |
2 | /* |
3 | * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx> | |
4 | * | |
51434125 | 5 | * Permission to use, copy, modify, and/or distribute this software for any |
6e75df87 VB |
6 | * purpose with or without fee is hereby granted, provided that the above |
7 | * copyright notice and this permission notice appear in all copies. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
16 | */ | |
17 | ||
6e75df87 VB |
18 | #include "lldpd.h" |
19 | ||
20 | #include <stdio.h> | |
21 | #include <unistd.h> | |
22 | #include <errno.h> | |
23 | #include <sys/ioctl.h> | |
6e75df87 VB |
24 | #include <linux/if_vlan.h> |
25 | #include <linux/if_bonding.h> | |
26 | #include <linux/if_bridge.h> | |
27 | #include <linux/wireless.h> | |
28 | #include <linux/sockios.h> | |
6e75df87 | 29 | #include <linux/if_packet.h> |
e12c2365 | 30 | #include <linux/ethtool.h> |
6e75df87 VB |
31 | |
32 | #define SYSFS_PATH_MAX 256 | |
33 | #define MAX_PORTS 1024 | |
34 | #define MAX_BRIDGES 1024 | |
35 | ||
88bc404f VB |
36 | static int |
37 | iflinux_eth_init(struct lldpd *cfg, struct lldpd_hardware *hardware) | |
38 | { | |
e735a319 | 39 | int fd; |
88bc404f VB |
40 | |
41 | log_debug("interfaces", "initialize ethernet device %s", | |
42 | hardware->h_ifname); | |
e735a319 | 43 | if ((fd = priv_iface_init(hardware->h_ifindex, hardware->h_ifname)) == -1) |
88bc404f VB |
44 | return -1; |
45 | hardware->h_sendfd = fd; /* Send */ | |
46 | ||
88bc404f VB |
47 | interfaces_setup_multicast(cfg, hardware->h_ifname, 0); |
48 | ||
49 | levent_hardware_add_fd(hardware, fd); /* Receive */ | |
50 | log_debug("interfaces", "interface %s initialized (fd=%d)", hardware->h_ifname, | |
51 | fd); | |
52 | return 0; | |
53 | } | |
54 | ||
22e8cd65 VB |
55 | /* Generic ethernet send/receive */ |
56 | static int | |
57 | iflinux_eth_send(struct lldpd *cfg, struct lldpd_hardware *hardware, | |
58 | char *buffer, size_t size) | |
59 | { | |
60 | log_debug("interfaces", "send PDU to ethernet device %s (fd=%d)", | |
61 | hardware->h_ifname, hardware->h_sendfd); | |
62 | return write(hardware->h_sendfd, | |
63 | buffer, size); | |
64 | } | |
65 | ||
66 | static int | |
67 | iflinux_eth_recv(struct lldpd *cfg, struct lldpd_hardware *hardware, | |
68 | int fd, char *buffer, size_t size) | |
69 | { | |
70 | int n; | |
aa015c26 | 71 | struct sockaddr_ll from = {}; |
22e8cd65 VB |
72 | socklen_t fromlen; |
73 | ||
74 | log_debug("interfaces", "receive PDU from ethernet device %s", | |
75 | hardware->h_ifname); | |
76 | fromlen = sizeof(from); | |
77 | if ((n = recvfrom(fd, | |
78 | buffer, | |
79 | size, 0, | |
80 | (struct sockaddr *)&from, | |
81 | &fromlen)) == -1) { | |
82 | log_warn("interfaces", "error while receiving frame on %s", | |
83 | hardware->h_ifname); | |
84 | hardware->h_rx_discarded_cnt++; | |
85 | return -1; | |
86 | } | |
87 | if (from.sll_pkttype == PACKET_OUTGOING) | |
88 | return -1; | |
89 | return n; | |
90 | } | |
91 | ||
92 | static int | |
93 | iflinux_eth_close(struct lldpd *cfg, struct lldpd_hardware *hardware) | |
94 | { | |
95 | log_debug("interfaces", "close ethernet device %s", | |
96 | hardware->h_ifname); | |
97 | interfaces_setup_multicast(cfg, hardware->h_ifname, 1); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static struct lldpd_ops eth_ops = { | |
102 | .send = iflinux_eth_send, | |
103 | .recv = iflinux_eth_recv, | |
104 | .cleanup = iflinux_eth_close, | |
105 | }; | |
106 | ||
e12c2365 | 107 | static int |
adbb6e54 VB |
108 | old_iflinux_is_bridge(struct lldpd *cfg, |
109 | struct interfaces_device_list *interfaces, | |
110 | struct interfaces_device *iface) | |
6e75df87 | 111 | { |
184bd199 | 112 | #ifdef ENABLE_OLDIES |
c557a63b | 113 | int j; |
6e75df87 | 114 | int ifptindices[MAX_PORTS]; |
adbb6e54 VB |
115 | unsigned long args2[4] = { |
116 | BRCTL_GET_PORT_LIST, | |
117 | (unsigned long)ifptindices, | |
118 | MAX_PORTS, | |
119 | 0 | |
120 | }; | |
6e75df87 VB |
121 | struct ifreq ifr; |
122 | ||
adbb6e54 | 123 | strncpy(ifr.ifr_name, iface->name, IFNAMSIZ); |
6e75df87 VB |
124 | memset(ifptindices, 0, sizeof(ifptindices)); |
125 | ifr.ifr_data = (char *)&args2; | |
126 | ||
b9f4c120 VB |
127 | if (ioctl(cfg->g_sock, SIOCDEVPRIVATE, &ifr) < 0) |
128 | /* This can happen with a 64bit kernel and 32bit | |
129 | userland, don't output anything about this to avoid | |
130 | to fill logs. */ | |
6e75df87 | 131 | return 0; |
6e75df87 VB |
132 | |
133 | for (j = 0; j < MAX_PORTS; j++) { | |
adbb6e54 VB |
134 | struct interfaces_device *port; |
135 | if (!ifptindices[j]) continue; | |
136 | port = interfaces_indextointerface(interfaces, ifptindices[j]); | |
137 | if (!port) continue; | |
138 | if (port->upper) { | |
139 | log_debug("interfaces", | |
140 | "strange, port %s for bridge %s already has upper interface %s", | |
141 | port->name, iface->name, port->upper->name); | |
142 | } else { | |
143 | log_debug("interfaces", | |
144 | "port %s is bridged to %s", | |
145 | port->name, iface->name); | |
146 | port->upper = iface; | |
147 | } | |
6e75df87 | 148 | } |
adbb6e54 VB |
149 | return 1; |
150 | #else | |
6e75df87 | 151 | return 0; |
adbb6e54 | 152 | #endif |
6e75df87 VB |
153 | } |
154 | ||
155 | static int | |
adbb6e54 VB |
156 | iflinux_is_bridge(struct lldpd *cfg, |
157 | struct interfaces_device_list *interfaces, | |
158 | struct interfaces_device *iface) | |
6e75df87 | 159 | { |
adbb6e54 | 160 | struct interfaces_device *port; |
6e75df87 VB |
161 | char path[SYSFS_PATH_MAX]; |
162 | int f; | |
163 | ||
adbb6e54 VB |
164 | if ((snprintf(path, SYSFS_PATH_MAX, |
165 | SYSFS_CLASS_NET "%s/" SYSFS_BRIDGE_FDB, | |
166 | iface->name)) >= SYSFS_PATH_MAX) | |
6f8925be | 167 | log_warnx("interfaces", "path truncated"); |
adbb6e54 VB |
168 | if ((f = priv_open(path)) < 0) |
169 | return old_iflinux_is_bridge(cfg, interfaces, iface); | |
6e75df87 | 170 | close(f); |
adbb6e54 VB |
171 | |
172 | /* Also grab all ports */ | |
173 | TAILQ_FOREACH(port, interfaces, next) { | |
174 | if (port->upper) continue; | |
175 | if (snprintf(path, SYSFS_PATH_MAX, | |
176 | SYSFS_CLASS_NET "%s/" SYSFS_BRIDGE_PORT_SUBDIR "/%s/port_no", | |
177 | iface->name, port->name) >= SYSFS_PATH_MAX) | |
178 | log_warnx("interfaces", "path truncated"); | |
179 | if ((f = priv_open(path)) < 0) | |
180 | continue; | |
181 | log_debug("interfaces", | |
182 | "port %s is bridged to %s", | |
183 | port->name, iface->name); | |
184 | port->upper = iface; | |
185 | close(f); | |
186 | } | |
187 | ||
6e75df87 VB |
188 | return 1; |
189 | } | |
190 | ||
191 | static int | |
adbb6e54 VB |
192 | iflinux_is_vlan(struct lldpd *cfg, |
193 | struct interfaces_device_list *interfaces, | |
194 | struct interfaces_device *iface) | |
6e75df87 VB |
195 | { |
196 | struct vlan_ioctl_args ifv; | |
197 | memset(&ifv, 0, sizeof(ifv)); | |
198 | ifv.cmd = GET_VLAN_REALDEV_NAME_CMD; | |
adbb6e54 VB |
199 | strlcpy(ifv.device1, iface->name, sizeof(ifv.device1)); |
200 | if (ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) >= 0) { | |
201 | /* This is a VLAN, get the lower interface and the VID */ | |
202 | struct interfaces_device *lower = | |
203 | interfaces_nametointerface(interfaces, ifv.u.device2); | |
204 | if (!lower) { | |
205 | log_debug("interfaces", | |
206 | "unable to find lower interface for VLAN %s", | |
207 | iface->name); | |
208 | return 0; | |
209 | } | |
6e75df87 | 210 | |
adbb6e54 VB |
211 | memset(&ifv, 0, sizeof(ifv)); |
212 | ifv.cmd = GET_VLAN_VID_CMD; | |
213 | strlcpy(ifv.device1, iface->name, sizeof(ifv.device1)); | |
214 | if (ioctl(cfg->g_sock, SIOCGIFVLAN, &ifv) < 0) { | |
215 | log_debug("interfaces", | |
216 | "unable to find VID for VLAN %s", | |
217 | iface->name); | |
218 | return 0; | |
219 | } | |
6e75df87 | 220 | |
adbb6e54 VB |
221 | iface->lower = lower; |
222 | iface->vlanid = ifv.u.VID; | |
6e75df87 | 223 | return 1; |
adbb6e54 | 224 | } |
6e75df87 VB |
225 | return 0; |
226 | } | |
227 | ||
228 | static int | |
adbb6e54 VB |
229 | iflinux_is_bond(struct lldpd *cfg, |
230 | struct interfaces_device_list *interfaces, | |
231 | struct interfaces_device *master) | |
6e75df87 VB |
232 | { |
233 | struct ifreq ifr; | |
234 | struct ifbond ifb; | |
6e75df87 VB |
235 | memset(&ifr, 0, sizeof(ifr)); |
236 | memset(&ifb, 0, sizeof(ifb)); | |
c557a63b | 237 | strlcpy(ifr.ifr_name, master->name, sizeof(ifr.ifr_name)); |
8f88ff70 | 238 | ifr.ifr_data = (char *)&ifb; |
6e75df87 VB |
239 | if (ioctl(cfg->g_sock, SIOCBONDINFOQUERY, &ifr) >= 0) { |
240 | while (ifb.num_slaves--) { | |
adbb6e54 | 241 | struct ifslave ifs; |
6e75df87 VB |
242 | memset(&ifr, 0, sizeof(ifr)); |
243 | memset(&ifs, 0, sizeof(ifs)); | |
c557a63b | 244 | strlcpy(ifr.ifr_name, master->name, sizeof(ifr.ifr_name)); |
8f88ff70 | 245 | ifr.ifr_data = (char *)&ifs; |
6e75df87 | 246 | ifs.slave_id = ifb.num_slaves; |
adbb6e54 VB |
247 | if (ioctl(cfg->g_sock, SIOCBONDSLAVEINFOQUERY, &ifr) >= 0) { |
248 | struct interfaces_device *slave = | |
249 | interfaces_nametointerface(interfaces, | |
250 | ifs.slave_name); | |
251 | if (slave == NULL) continue; | |
252 | if (slave->upper) continue; | |
253 | log_debug("interfaces", | |
254 | "interface %s is enslaved to %s", | |
255 | slave->name, master->name); | |
256 | slave->upper = master; | |
6e75df87 VB |
257 | } |
258 | } | |
adbb6e54 | 259 | return 1; |
6e75df87 VB |
260 | } |
261 | return 0; | |
262 | } | |
263 | ||
6e75df87 | 264 | static void |
adbb6e54 VB |
265 | iflinux_get_permanent_mac(struct lldpd *cfg, |
266 | struct interfaces_device_list *interfaces, | |
267 | struct interfaces_device *iface) | |
6e75df87 | 268 | { |
adbb6e54 | 269 | struct interfaces_device *master; |
c557a63b | 270 | int f, state = 0; |
6e75df87 | 271 | FILE *netbond; |
adbb6e54 VB |
272 | const char const *slaveif = "Slave Interface: "; |
273 | const char const *hwaddr = "Permanent HW addr: "; | |
4e5f34c5 | 274 | u_int8_t mac[ETHER_ADDR_LEN]; |
6e75df87 VB |
275 | char path[SYSFS_PATH_MAX]; |
276 | char line[100]; | |
6f8925be | 277 | |
adbb6e54 | 278 | if ((master = iface->upper) == NULL) |
c557a63b VB |
279 | return; |
280 | ||
6f8925be | 281 | log_debug("interfaces", "get MAC address for %s", |
adbb6e54 | 282 | iface->name); |
6f8925be | 283 | |
6e75df87 | 284 | /* We have a bond, we need to query it to get real MAC addresses */ |
6e75df87 | 285 | if (snprintf(path, SYSFS_PATH_MAX, "/proc/net/bonding/%s", |
c557a63b | 286 | master->name) >= SYSFS_PATH_MAX) { |
6f8925be | 287 | log_warnx("interfaces", "path truncated"); |
6e75df87 VB |
288 | return; |
289 | } | |
290 | if ((f = priv_open(path)) < 0) { | |
291 | if (snprintf(path, SYSFS_PATH_MAX, "/proc/self/net/bonding/%s", | |
c557a63b | 292 | master->name) >= SYSFS_PATH_MAX) { |
6f8925be | 293 | log_warnx("interfaces", "path truncated"); |
6e75df87 VB |
294 | return; |
295 | } | |
296 | f = priv_open(path); | |
297 | } | |
298 | if (f < 0) { | |
c557a63b VB |
299 | log_warnx("interfaces", |
300 | "unable to find %s in /proc/net/bonding or /proc/self/net/bonding", | |
301 | master->name); | |
6e75df87 VB |
302 | return; |
303 | } | |
304 | if ((netbond = fdopen(f, "r")) == NULL) { | |
6f8925be | 305 | log_warn("interfaces", "unable to read stream from %s", path); |
6e75df87 VB |
306 | close(f); |
307 | return; | |
308 | } | |
309 | /* State 0: | |
310 | We parse the file to search "Slave Interface: ". If found, go to | |
311 | state 1. | |
312 | State 1: | |
313 | We parse the file to search "Permanent HW addr: ". If found, we get | |
314 | the mac. | |
315 | */ | |
316 | while (fgets(line, sizeof(line), netbond)) { | |
317 | switch (state) { | |
318 | case 0: | |
319 | if (strncmp(line, slaveif, strlen(slaveif)) == 0) { | |
320 | if (line[strlen(line)-1] == '\n') | |
321 | line[strlen(line)-1] = '\0'; | |
c557a63b VB |
322 | if (strcmp(iface->name, |
323 | line + strlen(slaveif)) == 0) | |
6e75df87 VB |
324 | state++; |
325 | } | |
326 | break; | |
327 | case 1: | |
328 | if (strncmp(line, hwaddr, strlen(hwaddr)) == 0) { | |
329 | if (line[strlen(line)-1] == '\n') | |
330 | line[strlen(line)-1] = '\0'; | |
331 | if (sscanf(line + strlen(hwaddr), | |
332 | "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", | |
333 | &mac[0], &mac[1], &mac[2], | |
334 | &mac[3], &mac[4], &mac[5]) != | |
4e5f34c5 | 335 | ETHER_ADDR_LEN) { |
6f8925be | 336 | log_warn("interfaces", "unable to parse %s", |
6e75df87 VB |
337 | line + strlen(hwaddr)); |
338 | fclose(netbond); | |
339 | return; | |
340 | } | |
adbb6e54 | 341 | memcpy(iface->address, mac, |
4e5f34c5 | 342 | ETHER_ADDR_LEN); |
6e75df87 VB |
343 | fclose(netbond); |
344 | return; | |
345 | } | |
346 | break; | |
347 | } | |
348 | } | |
6f8925be | 349 | log_warnx("interfaces", "unable to find real mac address for %s", |
c557a63b | 350 | iface->name); |
6e75df87 VB |
351 | fclose(netbond); |
352 | } | |
353 | ||
354 | /* Fill up MAC/PHY for a given hardware port */ | |
355 | static void | |
adbb6e54 | 356 | iflinux_macphy(struct lldpd_hardware *hardware) |
6e75df87 VB |
357 | { |
358 | #ifdef ENABLE_DOT3 | |
359 | struct ethtool_cmd ethc; | |
360 | struct lldpd_port *port = &hardware->h_lport; | |
361 | int j; | |
362 | int advertised_ethtool_to_rfc3636[][2] = { | |
363 | {ADVERTISED_10baseT_Half, LLDP_DOT3_LINK_AUTONEG_10BASE_T}, | |
364 | {ADVERTISED_10baseT_Full, LLDP_DOT3_LINK_AUTONEG_10BASET_FD}, | |
365 | {ADVERTISED_100baseT_Half, LLDP_DOT3_LINK_AUTONEG_100BASE_TX}, | |
366 | {ADVERTISED_100baseT_Full, LLDP_DOT3_LINK_AUTONEG_100BASE_TXFD}, | |
367 | {ADVERTISED_1000baseT_Half, LLDP_DOT3_LINK_AUTONEG_1000BASE_T}, | |
368 | {ADVERTISED_1000baseT_Full, LLDP_DOT3_LINK_AUTONEG_1000BASE_TFD}, | |
369 | {ADVERTISED_10000baseT_Full, LLDP_DOT3_LINK_AUTONEG_OTHER}, | |
370 | {ADVERTISED_Pause, LLDP_DOT3_LINK_AUTONEG_FDX_PAUSE}, | |
371 | {ADVERTISED_Asym_Pause, LLDP_DOT3_LINK_AUTONEG_FDX_APAUSE}, | |
372 | {ADVERTISED_2500baseX_Full, LLDP_DOT3_LINK_AUTONEG_OTHER}, | |
373 | {0,0}}; | |
374 | ||
6f8925be VB |
375 | log_debug("interfaces", "ask ethtool for the appropriate MAC/PHY for %s", |
376 | hardware->h_ifname); | |
e12c2365 | 377 | if (priv_ethtool(hardware->h_ifname, ðc, sizeof(struct ethtool_cmd)) == 0) { |
3fd015c0 VB |
378 | port->p_macphy.autoneg_support = (ethc.supported & SUPPORTED_Autoneg) ? 1 : 0; |
379 | port->p_macphy.autoneg_enabled = (ethc.autoneg == AUTONEG_DISABLE) ? 0 : 1; | |
6e75df87 VB |
380 | for (j=0; advertised_ethtool_to_rfc3636[j][0]; j++) { |
381 | if (ethc.advertising & advertised_ethtool_to_rfc3636[j][0]) | |
3fd015c0 | 382 | port->p_macphy.autoneg_advertised |= |
6e75df87 VB |
383 | advertised_ethtool_to_rfc3636[j][1]; |
384 | } | |
385 | switch (ethc.speed) { | |
386 | case SPEED_10: | |
3fd015c0 | 387 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
6e75df87 | 388 | LLDP_DOT3_MAU_10BASETFD : LLDP_DOT3_MAU_10BASETHD; |
3fd015c0 | 389 | if (ethc.port == PORT_BNC) port->p_macphy.mau_type = LLDP_DOT3_MAU_10BASE2; |
6e75df87 | 390 | if (ethc.port == PORT_FIBRE) |
3fd015c0 | 391 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
fda729fd | 392 | LLDP_DOT3_MAU_10BASEFLFD : LLDP_DOT3_MAU_10BASEFLHD; |
6e75df87 VB |
393 | break; |
394 | case SPEED_100: | |
3fd015c0 | 395 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
6e75df87 VB |
396 | LLDP_DOT3_MAU_100BASETXFD : LLDP_DOT3_MAU_100BASETXHD; |
397 | if (ethc.port == PORT_BNC) | |
3fd015c0 | 398 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
5fa8eaa5 | 399 | LLDP_DOT3_MAU_100BASET2FD : LLDP_DOT3_MAU_100BASET2HD; |
6e75df87 | 400 | if (ethc.port == PORT_FIBRE) |
3fd015c0 | 401 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
6e75df87 VB |
402 | LLDP_DOT3_MAU_100BASEFXFD : LLDP_DOT3_MAU_100BASEFXHD; |
403 | break; | |
404 | case SPEED_1000: | |
3fd015c0 | 405 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
6e75df87 VB |
406 | LLDP_DOT3_MAU_1000BASETFD : LLDP_DOT3_MAU_1000BASETHD; |
407 | if (ethc.port == PORT_FIBRE) | |
3fd015c0 | 408 | port->p_macphy.mau_type = (ethc.duplex == DUPLEX_FULL) ? \ |
6e75df87 VB |
409 | LLDP_DOT3_MAU_1000BASEXFD : LLDP_DOT3_MAU_1000BASEXHD; |
410 | break; | |
411 | case SPEED_10000: | |
3fd015c0 | 412 | port->p_macphy.mau_type = (ethc.port == PORT_FIBRE) ? \ |
6e75df87 VB |
413 | LLDP_DOT3_MAU_10GIGBASEX : LLDP_DOT3_MAU_10GIGBASER; |
414 | break; | |
415 | } | |
3fd015c0 | 416 | if (ethc.port == PORT_AUI) port->p_macphy.mau_type = LLDP_DOT3_MAU_AUI; |
6e75df87 VB |
417 | } |
418 | #endif | |
419 | } | |
420 | ||
e12c2365 VB |
421 | struct bond_master { |
422 | char name[IFNAMSIZ]; | |
423 | int index; | |
424 | }; | |
425 | ||
849954d7 VB |
426 | static int |
427 | iface_bond_init(struct lldpd *cfg, struct lldpd_hardware *hardware) | |
428 | { | |
e12c2365 | 429 | struct bond_master *master = hardware->h_data; |
e735a319 | 430 | int fd; |
849954d7 VB |
431 | int un = 1; |
432 | ||
e12c2365 | 433 | if (!master) return -1; |
849954d7 | 434 | |
6f8925be VB |
435 | log_debug("interfaces", "initialize bonded device %s", |
436 | hardware->h_ifname); | |
437 | ||
849954d7 | 438 | /* First, we get a socket to the raw physical interface */ |
e735a319 VB |
439 | if ((fd = priv_iface_init(hardware->h_ifindex, |
440 | hardware->h_ifname)) == -1) | |
849954d7 VB |
441 | return -1; |
442 | hardware->h_sendfd = fd; | |
adbb6e54 | 443 | interfaces_setup_multicast(cfg, hardware->h_ifname, 0); |
849954d7 VB |
444 | |
445 | /* Then, we open a raw interface for the master */ | |
e735a319 | 446 | if ((fd = priv_iface_init(master->index, master->name)) == -1) { |
849954d7 VB |
447 | close(hardware->h_sendfd); |
448 | return -1; | |
449 | } | |
849954d7 VB |
450 | /* With bonding and older kernels (< 2.6.27) we need to listen |
451 | * to bond device. We use setsockopt() PACKET_ORIGDEV to get | |
452 | * physical device instead of bond device (works with >= | |
453 | * 2.6.24). */ | |
454 | if (setsockopt(fd, SOL_PACKET, | |
e12c2365 VB |
455 | PACKET_ORIGDEV, &un, sizeof(un)) == -1) { |
456 | log_info("interfaces", "unable to setsockopt for master bonding device of %s. " | |
457 | "You will get inaccurate results", | |
458 | hardware->h_ifname); | |
849954d7 | 459 | } |
adbb6e54 | 460 | interfaces_setup_multicast(cfg, master->name, 0); |
849954d7 | 461 | |
ba93c521 | 462 | levent_hardware_add_fd(hardware, hardware->h_sendfd); |
d6e889b6 | 463 | levent_hardware_add_fd(hardware, fd); |
6f8925be | 464 | log_debug("interfaces", "interface %s initialized (fd=%d,master=%s[%d])", |
849954d7 VB |
465 | hardware->h_ifname, |
466 | hardware->h_sendfd, | |
e12c2365 | 467 | master->name, fd); |
849954d7 VB |
468 | return 0; |
469 | } | |
470 | ||
471 | static int | |
472 | iface_bond_send(struct lldpd *cfg, struct lldpd_hardware *hardware, | |
473 | char *buffer, size_t size) | |
474 | { | |
475 | /* With bonds, we have duplicate MAC address on different physical | |
476 | * interfaces. We need to alter the source MAC address when we send on | |
c557a63b VB |
477 | * an inactive slave. To avoid any future problem, we always set the |
478 | * source MAC address to 0. */ | |
6f8925be VB |
479 | log_debug("interfaces", "send PDU to bonded device %s", |
480 | hardware->h_ifname); | |
4e5f34c5 | 481 | if (size < 2 * ETHER_ADDR_LEN) { |
c557a63b VB |
482 | log_warnx("interfaces", |
483 | "packet to send on %s is too small!", | |
849954d7 VB |
484 | hardware->h_ifname); |
485 | return 0; | |
486 | } | |
4e5f34c5 | 487 | memset(buffer + ETHER_ADDR_LEN, 0, ETHER_ADDR_LEN); |
849954d7 VB |
488 | return write(hardware->h_sendfd, |
489 | buffer, size); | |
490 | } | |
491 | ||
492 | static int | |
493 | iface_bond_recv(struct lldpd *cfg, struct lldpd_hardware *hardware, | |
494 | int fd, char *buffer, size_t size) | |
495 | { | |
496 | int n; | |
aa015c26 | 497 | struct sockaddr_ll from = {}; |
849954d7 | 498 | socklen_t fromlen; |
e12c2365 | 499 | struct bond_master *master = hardware->h_data; |
849954d7 | 500 | |
6f8925be VB |
501 | log_debug("interfaces", "receive PDU from bonded device %s", |
502 | hardware->h_ifname); | |
849954d7 VB |
503 | fromlen = sizeof(from); |
504 | if ((n = recvfrom(fd, buffer, size, 0, | |
505 | (struct sockaddr *)&from, | |
506 | &fromlen)) == -1) { | |
6f8925be | 507 | log_warn("interfaces", "error while receiving frame on %s", |
849954d7 VB |
508 | hardware->h_ifname); |
509 | hardware->h_rx_discarded_cnt++; | |
510 | return -1; | |
511 | } | |
512 | if (from.sll_pkttype == PACKET_OUTGOING) | |
513 | return -1; | |
514 | if (fd == hardware->h_sendfd) | |
515 | /* We received this on the physical interface. */ | |
516 | return n; | |
517 | /* We received this on the bonding interface. Is it really for us? */ | |
44002d66 | 518 | if (from.sll_ifindex == hardware->h_ifindex) |
849954d7 VB |
519 | /* This is for us */ |
520 | return n; | |
e12c2365 | 521 | if (from.sll_ifindex == master->index) |
849954d7 VB |
522 | /* We don't know from which physical interface it comes (kernel |
523 | * < 2.6.24). In doubt, this is for us. */ | |
524 | return n; | |
525 | return -1; /* Not for us */ | |
526 | } | |
527 | ||
528 | static int | |
529 | iface_bond_close(struct lldpd *cfg, struct lldpd_hardware *hardware) | |
530 | { | |
e12c2365 | 531 | struct bond_master *master = hardware->h_data; |
6f8925be VB |
532 | log_debug("interfaces", "closing bonded device %s", |
533 | hardware->h_ifname); | |
adbb6e54 VB |
534 | interfaces_setup_multicast(cfg, hardware->h_ifname, 1); |
535 | interfaces_setup_multicast(cfg, master->name, 1); | |
849954d7 VB |
536 | free(hardware->h_data); |
537 | return 0; | |
538 | } | |
539 | ||
adbb6e54 VB |
540 | struct lldpd_ops bond_ops = { |
541 | .send = iface_bond_send, | |
542 | .recv = iface_bond_recv, | |
543 | .cleanup = iface_bond_close, | |
544 | }; | |
545 | ||
e12c2365 | 546 | static void |
adbb6e54 | 547 | iflinux_handle_bond(struct lldpd *cfg, struct interfaces_device_list *interfaces) |
849954d7 | 548 | { |
adbb6e54 VB |
549 | struct interfaces_device *iface; |
550 | struct interfaces_device *master; | |
849954d7 | 551 | struct lldpd_hardware *hardware; |
c557a63b | 552 | struct bond_master *bmaster; |
e12c2365 | 553 | TAILQ_FOREACH(iface, interfaces, next) { |
adbb6e54 VB |
554 | if (!(iface->type & IFACE_PHYSICAL_T)) continue; |
555 | if (!iface->flags) continue; | |
556 | if (!iface->upper || !(iface->upper->type & IFACE_BOND_T)) continue; | |
849954d7 | 557 | |
adbb6e54 | 558 | master = iface->upper; |
c557a63b VB |
559 | log_debug("interfaces", "%s is an acceptable bonded device (master=%s)", |
560 | iface->name, master->name); | |
44002d66 | 561 | if ((hardware = lldpd_get_hardware(cfg, |
e12c2365 VB |
562 | iface->name, |
563 | iface->index, | |
44002d66 | 564 | &bond_ops)) == NULL) { |
849954d7 | 565 | if ((hardware = lldpd_alloc_hardware(cfg, |
e12c2365 VB |
566 | iface->name, |
567 | iface->index)) == NULL) { | |
6f8925be | 568 | log_warnx("interfaces", "Unable to allocate space for %s", |
e12c2365 VB |
569 | iface->name); |
570 | continue; | |
571 | } | |
c557a63b | 572 | hardware->h_data = bmaster = calloc(1, sizeof(struct bond_master)); |
e12c2365 VB |
573 | if (!hardware->h_data) { |
574 | log_warn("interfaces", "not enough memory"); | |
575 | lldpd_hardware_cleanup(cfg, hardware); | |
576 | continue; | |
577 | } | |
849954d7 | 578 | if (iface_bond_init(cfg, hardware) != 0) { |
6f8925be | 579 | log_warn("interfaces", "unable to initialize %s", |
849954d7 VB |
580 | hardware->h_ifname); |
581 | lldpd_hardware_cleanup(cfg, hardware); | |
582 | continue; | |
583 | } | |
584 | hardware->h_ops = &bond_ops; | |
585 | TAILQ_INSERT_TAIL(&cfg->g_hardware, hardware, h_entries); | |
586 | } else { | |
cfe00f7f | 587 | if (hardware->h_flags) continue; /* Already seen this time */ |
c557a63b | 588 | bmaster = hardware->h_data; |
e12c2365 | 589 | memset(hardware->h_data, 0, sizeof(struct bond_master)); |
c557a63b VB |
590 | bmaster->index = master->index; |
591 | strncpy(bmaster->name, master->name, IFNAMSIZ); | |
4b292b55 | 592 | lldpd_port_cleanup(&hardware->h_lport, 0); |
849954d7 | 593 | } |
e12c2365 VB |
594 | |
595 | hardware->h_flags = iface->flags; | |
596 | iface->flags = 0; | |
849954d7 VB |
597 | |
598 | /* Get local address */ | |
4e5f34c5 | 599 | memcpy(&hardware->h_lladdr, iface->address, ETHER_ADDR_LEN); |
e12c2365 | 600 | |
36bd79e3 | 601 | /* Fill information about port */ |
adbb6e54 | 602 | interfaces_helper_port_name_desc(hardware, iface); |
e12c2365 | 603 | |
849954d7 | 604 | /* Fill additional info */ |
7a008075 | 605 | #ifdef ENABLE_DOT3 |
e12c2365 | 606 | hardware->h_lport.p_aggregid = master->index; |
7a008075 | 607 | #endif |
e12c2365 | 608 | hardware->h_mtu = iface->mtu ? iface->mtu : 1500; |
849954d7 VB |
609 | } |
610 | } | |
611 | ||
adbb6e54 | 612 | /* Query each interface to get the appropriate driver */ |
5994b27d | 613 | static void |
adbb6e54 VB |
614 | iflinux_add_driver(struct lldpd *cfg, |
615 | struct interfaces_device_list *interfaces) | |
5994b27d | 616 | { |
adbb6e54 VB |
617 | struct interfaces_device *iface; |
618 | TAILQ_FOREACH(iface, interfaces, next) { | |
619 | struct ethtool_drvinfo ethc = { | |
620 | .cmd = ETHTOOL_GDRVINFO | |
621 | }; | |
622 | struct ifreq ifr = { | |
623 | .ifr_data = (caddr_t)ðc | |
624 | }; | |
625 | if (iface->driver) continue; | |
626 | ||
627 | strlcpy(ifr.ifr_name, iface->name, IFNAMSIZ); | |
628 | if (ioctl(cfg->g_sock, SIOCETHTOOL, &ifr) == 0) { | |
629 | iface->driver = strdup(ethc.driver); | |
630 | log_debug("interfaces", "driver for %s is `%s`", | |
631 | iface->name, iface->driver); | |
632 | } | |
5994b27d VB |
633 | } |
634 | } | |
635 | ||
adbb6e54 | 636 | /* Query each interface to see if it is a wireless one */ |
e12c2365 | 637 | static void |
adbb6e54 VB |
638 | iflinux_add_wireless(struct lldpd *cfg, |
639 | struct interfaces_device_list *interfaces) | |
f6c4ca4b | 640 | { |
adbb6e54 VB |
641 | struct interfaces_device *iface; |
642 | TAILQ_FOREACH(iface, interfaces, next) { | |
643 | struct iwreq iwr; | |
644 | memset(&iwr, 0, sizeof(struct iwreq)); | |
645 | strlcpy(iwr.ifr_name, iface->name, IFNAMSIZ); | |
646 | if (ioctl(cfg->g_sock, SIOCGIWNAME, &iwr) >= 0) { | |
647 | log_debug("interfaces", "%s is wireless", | |
648 | iface->name); | |
649 | iface->type |= IFACE_WIRELESS_T | IFACE_PHYSICAL_T; | |
f6c4ca4b | 650 | } |
f6c4ca4b | 651 | } |
adbb6e54 | 652 | } |
f6c4ca4b | 653 | |
adbb6e54 VB |
654 | /* Query each interface to see if it is a bridge */ |
655 | static void | |
656 | iflinux_add_bridge(struct lldpd *cfg, | |
657 | struct interfaces_device_list *interfaces) | |
658 | { | |
659 | struct interfaces_device *iface; | |
f6c4ca4b | 660 | |
adbb6e54 VB |
661 | TAILQ_FOREACH(iface, interfaces, next) { |
662 | if (iface->type & (IFACE_PHYSICAL_T| | |
663 | IFACE_VLAN_T|IFACE_BOND_T|IFACE_BRIDGE_T)) | |
664 | continue; | |
665 | if (iflinux_is_bridge(cfg, interfaces, iface)) { | |
666 | log_debug("interfaces", | |
667 | "interface %s is a bridge", | |
668 | iface->name); | |
669 | iface->type |= IFACE_BRIDGE_T; | |
f6c4ca4b | 670 | } |
f6c4ca4b | 671 | } |
f6c4ca4b VB |
672 | } |
673 | ||
adbb6e54 | 674 | /* Query each interface to see if it is a bond */ |
f6c4ca4b | 675 | static void |
adbb6e54 VB |
676 | iflinux_add_bond(struct lldpd *cfg, |
677 | struct interfaces_device_list *interfaces) | |
6e75df87 | 678 | { |
adbb6e54 | 679 | struct interfaces_device *iface; |
e12c2365 VB |
680 | |
681 | TAILQ_FOREACH(iface, interfaces, next) { | |
adbb6e54 VB |
682 | if (iface->type & (IFACE_PHYSICAL_T|IFACE_VLAN_T| |
683 | IFACE_BOND_T|IFACE_BRIDGE_T)) | |
6e75df87 | 684 | continue; |
adbb6e54 VB |
685 | if (iflinux_is_bond(cfg, interfaces, iface)) { |
686 | log_debug("interfaces", | |
687 | "interface %s is a bond", | |
688 | iface->name); | |
689 | iface->type |= IFACE_BOND_T; | |
690 | iflinux_get_permanent_mac(cfg, | |
691 | interfaces, iface); | |
692 | } | |
6e75df87 | 693 | } |
6e75df87 VB |
694 | } |
695 | ||
adbb6e54 | 696 | /* Query each interface to see if it is a vlan */ |
e12c2365 | 697 | static void |
adbb6e54 VB |
698 | iflinux_add_vlan(struct lldpd *cfg, |
699 | struct interfaces_device_list *interfaces) | |
6e75df87 | 700 | { |
adbb6e54 | 701 | struct interfaces_device *iface; |
d4e4c804 | 702 | |
adbb6e54 VB |
703 | TAILQ_FOREACH(iface, interfaces, next) { |
704 | if (iface->type & (IFACE_PHYSICAL_T|IFACE_VLAN_T| | |
705 | IFACE_BOND_T|IFACE_BRIDGE_T)) | |
706 | continue; | |
707 | if (iflinux_is_vlan(cfg, interfaces, iface)) { | |
708 | log_debug("interfaces", | |
709 | "interface %s is a VLAN", | |
710 | iface->name); | |
711 | iface->type |= IFACE_VLAN_T; | |
6e75df87 VB |
712 | } |
713 | } | |
714 | } | |
31ee070d | 715 | |
e12c2365 | 716 | static void |
adbb6e54 VB |
717 | iflinux_add_physical(struct lldpd *cfg, |
718 | struct interfaces_device_list *interfaces) | |
b4ac8083 | 719 | { |
adbb6e54 VB |
720 | struct interfaces_device *iface; |
721 | /* White-list some drivers */ | |
722 | const char * const *rif; | |
723 | const char * const regular_interfaces[] = { | |
724 | "dsa", | |
725 | "veth", | |
726 | NULL | |
727 | }; | |
b4ac8083 | 728 | |
e12c2365 | 729 | TAILQ_FOREACH(iface, interfaces, next) { |
adbb6e54 VB |
730 | if (iface->type & (IFACE_VLAN_T| |
731 | IFACE_BOND_T|IFACE_BRIDGE_T)) | |
732 | continue; | |
b4ac8083 | 733 | |
adbb6e54 VB |
734 | iface->type &= ~IFACE_PHYSICAL_T; |
735 | ||
736 | /* We request that the interface is able to do either multicast | |
737 | * or broadcast to be able to send discovery frames. */ | |
738 | if (!(iface->flags & (IFF_MULTICAST|IFF_BROADCAST))) { | |
739 | log_debug("interfaces", "skip %s: not able to do multicast nor broadcast", | |
740 | iface->name); | |
b4ac8083 | 741 | continue; |
adbb6e54 | 742 | } |
b4ac8083 | 743 | |
adbb6e54 VB |
744 | /* If the interface is linked to another one, skip it too. */ |
745 | if (iface->lower) { | |
746 | log_debug("interfaces", "skip %s: there is a lower interface (%s)", | |
747 | iface->name, iface->lower->name); | |
748 | continue; | |
b4ac8083 | 749 | } |
adbb6e54 VB |
750 | |
751 | /* Check if the driver is whitelisted */ | |
752 | if (iface->driver) { | |
753 | for (rif = regular_interfaces; *rif; rif++) { | |
754 | if (strcmp(iface->driver, *rif) == 0) { | |
755 | /* White listed! */ | |
756 | log_debug("interfaces", "accept %s: whitelisted", | |
757 | iface->name); | |
758 | iface->type |= IFACE_PHYSICAL_T; | |
759 | continue; | |
760 | } | |
761 | } | |
762 | } | |
763 | ||
764 | /* Check queue len. If no queue, this usually means that this | |
765 | is not a "real" interface. */ | |
766 | if (iface->txqueue == 0) { | |
767 | log_debug("interfaces", "skip %s: no queue", | |
768 | iface->name); | |
769 | continue; | |
770 | } | |
771 | ||
772 | log_debug("interfaces", | |
773 | "%s is a physical interface", | |
774 | iface->name); | |
775 | iface->type |= IFACE_PHYSICAL_T; | |
b4ac8083 VB |
776 | } |
777 | } | |
778 | ||
e12c2365 VB |
779 | void |
780 | interfaces_update(struct lldpd *cfg) | |
781 | { | |
adbb6e54 | 782 | struct lldpd_hardware *hardware; |
281a5cd4 VB |
783 | struct interfaces_device_list *interfaces; |
784 | struct interfaces_address_list *addresses; | |
e12c2365 VB |
785 | interfaces = netlink_get_interfaces(); |
786 | addresses = netlink_get_addresses(); | |
787 | if (interfaces == NULL || addresses == NULL) { | |
788 | log_warnx("interfaces", "cannot update the list of local interfaces"); | |
789 | goto end; | |
790 | } | |
791 | ||
adbb6e54 VB |
792 | /* Add missing bits to list of interfaces */ |
793 | iflinux_add_driver(cfg, interfaces); | |
794 | iflinux_add_wireless(cfg, interfaces); | |
795 | iflinux_add_bridge(cfg, interfaces); | |
796 | iflinux_add_bond(cfg, interfaces); | |
797 | iflinux_add_vlan(cfg, interfaces); | |
798 | iflinux_add_physical(cfg, interfaces); | |
799 | ||
800 | interfaces_helper_whitelist(cfg, interfaces); | |
801 | iflinux_handle_bond(cfg, interfaces); | |
88bc404f | 802 | interfaces_helper_physical(cfg, interfaces, |
22e8cd65 | 803 | ð_ops, |
88bc404f | 804 | iflinux_eth_init); |
e12c2365 | 805 | #ifdef ENABLE_DOT1 |
adbb6e54 | 806 | interfaces_helper_vlan(cfg, interfaces); |
e12c2365 | 807 | #endif |
adbb6e54 VB |
808 | interfaces_helper_mgmt(cfg, addresses); |
809 | interfaces_helper_chassis(cfg, interfaces); | |
810 | ||
811 | /* Mac/PHY */ | |
812 | TAILQ_FOREACH(hardware, &cfg->g_hardware, h_entries) { | |
813 | if (!hardware->h_flags) continue; | |
814 | iflinux_macphy(hardware); | |
815 | } | |
e12c2365 | 816 | |
0484f180 VB |
817 | if (cfg->g_iface_event == NULL) { |
818 | int s; | |
819 | log_debug("interfaces", "subscribe to netlink notifications"); | |
820 | s = netlink_subscribe_changes(); | |
821 | if (s == -1) { | |
822 | log_warnx("interfaces", "unable to subscribe to netlink notifications"); | |
823 | goto end; | |
824 | } | |
aa313f2a VB |
825 | if (levent_iface_subscribe(cfg, s) == -1) |
826 | close(s); | |
0484f180 VB |
827 | } |
828 | ||
e12c2365 | 829 | end: |
adbb6e54 VB |
830 | interfaces_free_devices(interfaces); |
831 | interfaces_free_addresses(addresses); | |
e12c2365 VB |
832 | return; |
833 | ||
834 | } |