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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
6235b3de | 2 | |
540eb5f0 | 3 | #include <net/if.h> |
ad851cae | 4 | #include <netinet/in.h> |
9f0cf80d | 5 | #include <linux/if_arp.h> |
ad851cae | 6 | #include <linux/if_bridge.h> |
6235b3de | 7 | |
737f1405 | 8 | #include "bridge.h" |
540eb5f0 | 9 | #include "netlink-util.h" |
23f53b99 | 10 | #include "networkd-manager.h" |
8e2cb51c | 11 | #include "string-table.h" |
0d6c68eb | 12 | #include "vlan-util.h" |
540eb5f0 | 13 | |
ad851cae YW |
14 | assert_cc((int) MULTICAST_ROUTER_NONE == (int) MDB_RTR_TYPE_DISABLED); |
15 | assert_cc((int) MULTICAST_ROUTER_TEMPORARY_QUERY == (int) MDB_RTR_TYPE_TEMP_QUERY); | |
16 | assert_cc((int) MULTICAST_ROUTER_PERMANENT == (int) MDB_RTR_TYPE_PERM); | |
17 | assert_cc((int) MULTICAST_ROUTER_TEMPORARY == (int) MDB_RTR_TYPE_TEMP); | |
18 | ||
8e2cb51c | 19 | static const char* const multicast_router_table[_MULTICAST_ROUTER_MAX] = { |
ad851cae | 20 | [MULTICAST_ROUTER_NONE] = "no", |
8e2cb51c | 21 | [MULTICAST_ROUTER_TEMPORARY_QUERY] = "query", |
ad851cae YW |
22 | [MULTICAST_ROUTER_PERMANENT] = "permanent", |
23 | [MULTICAST_ROUTER_TEMPORARY] = "temporary", | |
8e2cb51c YW |
24 | }; |
25 | ||
26 | DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(multicast_router, MulticastRouter, _MULTICAST_ROUTER_INVALID); | |
27 | DEFINE_CONFIG_PARSE_ENUM(config_parse_multicast_router, multicast_router, MulticastRouter, | |
28 | "Failed to parse bridge multicast router setting"); | |
29 | ||
5238e957 | 30 | /* callback for bridge netdev's parameter set */ |
302a796f | 31 | static int netdev_bridge_set_handler(sd_netlink *rtnl, sd_netlink_message *m, NetDev *netdev) { |
540eb5f0 SS |
32 | int r; |
33 | ||
34 | assert(netdev); | |
35 | assert(m); | |
36 | ||
37 | r = sd_netlink_message_get_errno(m); | |
38 | if (r < 0) { | |
39 | log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m"); | |
40 | return 1; | |
41 | } | |
42 | ||
82936769 | 43 | log_netdev_debug(netdev, "Bridge parameters set success"); |
540eb5f0 SS |
44 | |
45 | return 1; | |
46 | } | |
47 | ||
81f01be0 | 48 | static int netdev_bridge_post_create_message(NetDev *netdev, sd_netlink_message *req) { |
540eb5f0 SS |
49 | Bridge *b; |
50 | int r; | |
51 | ||
81f01be0 | 52 | assert_se(b = BRIDGE(netdev)); |
540eb5f0 SS |
53 | |
54 | r = sd_netlink_message_open_container(req, IFLA_LINKINFO); | |
55 | if (r < 0) | |
81f01be0 | 56 | return r; |
540eb5f0 SS |
57 | |
58 | r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind)); | |
59 | if (r < 0) | |
81f01be0 | 60 | return r; |
540eb5f0 | 61 | |
1a14863e | 62 | /* convert to jiffes */ |
730389b6 | 63 | if (b->forward_delay != USEC_INFINITY) { |
1a14863e | 64 | r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay)); |
540eb5f0 | 65 | if (r < 0) |
81f01be0 | 66 | return r; |
540eb5f0 SS |
67 | } |
68 | ||
69 | if (b->hello_time > 0) { | |
1a14863e | 70 | r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time)); |
540eb5f0 | 71 | if (r < 0) |
81f01be0 | 72 | return r; |
540eb5f0 SS |
73 | } |
74 | ||
75 | if (b->max_age > 0) { | |
1a14863e | 76 | r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age)); |
540eb5f0 | 77 | if (r < 0) |
81f01be0 | 78 | return r; |
540eb5f0 SS |
79 | } |
80 | ||
0da81203 | 81 | if (b->ageing_time != USEC_INFINITY) { |
c7440e74 TJ |
82 | r = sd_netlink_message_append_u32(req, IFLA_BR_AGEING_TIME, usec_to_jiffies(b->ageing_time)); |
83 | if (r < 0) | |
81f01be0 | 84 | return r; |
c7440e74 TJ |
85 | } |
86 | ||
87 | if (b->priority > 0) { | |
88 | r = sd_netlink_message_append_u16(req, IFLA_BR_PRIORITY, b->priority); | |
89 | if (r < 0) | |
81f01be0 | 90 | return r; |
c7440e74 TJ |
91 | } |
92 | ||
c4819961 JC |
93 | if (b->group_fwd_mask > 0) { |
94 | r = sd_netlink_message_append_u16(req, IFLA_BR_GROUP_FWD_MASK, b->group_fwd_mask); | |
95 | if (r < 0) | |
81f01be0 | 96 | return r; |
c4819961 JC |
97 | } |
98 | ||
0d6c68eb | 99 | if (b->default_pvid != VLANID_INVALID) { |
c7440e74 TJ |
100 | r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_DEFAULT_PVID, b->default_pvid); |
101 | if (r < 0) | |
81f01be0 | 102 | return r; |
c7440e74 TJ |
103 | } |
104 | ||
3fef7a3f SS |
105 | if (b->mcast_querier >= 0) { |
106 | r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier); | |
107 | if (r < 0) | |
81f01be0 | 108 | return r; |
3fef7a3f SS |
109 | } |
110 | ||
6df6d898 SS |
111 | if (b->mcast_snooping >= 0) { |
112 | r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_SNOOPING, b->mcast_snooping); | |
113 | if (r < 0) | |
81f01be0 | 114 | return r; |
6df6d898 SS |
115 | } |
116 | ||
c6f8d17d TJ |
117 | if (b->vlan_filtering >= 0) { |
118 | r = sd_netlink_message_append_u8(req, IFLA_BR_VLAN_FILTERING, b->vlan_filtering); | |
119 | if (r < 0) | |
81f01be0 | 120 | return r; |
c6f8d17d TJ |
121 | } |
122 | ||
4df4df5b | 123 | if (b->vlan_protocol >= 0) { |
6eb35be8 | 124 | r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_PROTOCOL, htobe16(b->vlan_protocol)); |
4df4df5b | 125 | if (r < 0) |
81f01be0 | 126 | return r; |
4df4df5b RF |
127 | } |
128 | ||
b760a9af SS |
129 | if (b->stp >= 0) { |
130 | r = sd_netlink_message_append_u32(req, IFLA_BR_STP_STATE, b->stp); | |
131 | if (r < 0) | |
81f01be0 | 132 | return r; |
b760a9af SS |
133 | } |
134 | ||
afa51e2d SS |
135 | if (b->igmp_version > 0) { |
136 | r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_IGMP_VERSION, b->igmp_version); | |
137 | if (r < 0) | |
81f01be0 | 138 | return r; |
afa51e2d SS |
139 | } |
140 | ||
540eb5f0 SS |
141 | r = sd_netlink_message_close_container(req); |
142 | if (r < 0) | |
81f01be0 | 143 | return r; |
540eb5f0 SS |
144 | |
145 | r = sd_netlink_message_close_container(req); | |
146 | if (r < 0) | |
81f01be0 ZJS |
147 | return r; |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
c2b19b8f | 152 | static int netdev_bridge_post_create(NetDev *netdev, Link *link) { |
81f01be0 ZJS |
153 | _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
154 | int r; | |
155 | ||
156 | assert(netdev); | |
157 | ||
158 | r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex); | |
159 | if (r < 0) | |
160 | return log_netdev_error_errno(netdev, r, "Could not allocate netlink message: %m"); | |
161 | ||
162 | r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK); | |
163 | if (r < 0) | |
164 | return log_link_error_errno(link, r, "Could not set netlink message flags: %m"); | |
165 | ||
166 | r = netdev_bridge_post_create_message(netdev, req); | |
167 | if (r < 0) | |
168 | return log_netdev_error_errno(netdev, r, "Could not create netlink message: %m"); | |
540eb5f0 | 169 | |
302a796f YW |
170 | r = netlink_call_async(netdev->manager->rtnl, NULL, req, netdev_bridge_set_handler, |
171 | netdev_destroy_callback, netdev); | |
540eb5f0 | 172 | if (r < 0) |
81f01be0 | 173 | return log_netdev_error_errno(netdev, r, "Could not send netlink message: %m"); |
540eb5f0 SS |
174 | |
175 | netdev_ref(netdev); | |
176 | ||
177 | return r; | |
178 | } | |
6235b3de | 179 | |
afa51e2d SS |
180 | int config_parse_bridge_igmp_version( |
181 | const char *unit, | |
182 | const char *filename, | |
183 | unsigned line, | |
184 | const char *section, | |
185 | unsigned section_line, | |
186 | const char *lvalue, | |
187 | int ltype, | |
188 | const char *rvalue, | |
189 | void *data, | |
190 | void *userdata) { | |
191 | ||
192 | Bridge *b = userdata; | |
193 | uint8_t u; | |
194 | int r; | |
195 | ||
196 | assert(filename); | |
197 | assert(lvalue); | |
198 | assert(rvalue); | |
199 | assert(data); | |
200 | ||
201 | if (isempty(rvalue)) { | |
202 | b->igmp_version = 0; /* 0 means unset. */ | |
203 | return 0; | |
204 | } | |
205 | ||
206 | r = safe_atou8(rvalue, &u); | |
207 | if (r < 0) { | |
d96edb2c | 208 | log_syntax(unit, LOG_WARNING, filename, line, r, |
b738530b | 209 | "Failed to parse bridge's multicast IGMP version number '%s', ignoring assignment: %m", |
afa51e2d SS |
210 | rvalue); |
211 | return 0; | |
212 | } | |
213 | if (!IN_SET(u, 2, 3)) { | |
d96edb2c | 214 | log_syntax(unit, LOG_WARNING, filename, line, 0, |
b738530b | 215 | "Invalid bridge's multicast IGMP version number '%s', ignoring assignment.", rvalue); |
afa51e2d SS |
216 | return 0; |
217 | } | |
218 | ||
219 | b->igmp_version = u; | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
796aa313 YW |
224 | int config_parse_bridge_port_priority( |
225 | const char *unit, | |
226 | const char *filename, | |
227 | unsigned line, | |
228 | const char *section, | |
229 | unsigned section_line, | |
230 | const char *lvalue, | |
231 | int ltype, | |
232 | const char *rvalue, | |
233 | void *data, | |
234 | void *userdata) { | |
235 | ||
236 | uint16_t i; | |
237 | int r; | |
238 | ||
239 | assert(filename); | |
240 | assert(lvalue); | |
241 | assert(rvalue); | |
242 | assert(data); | |
243 | ||
244 | /* This is used in networkd-network-gperf.gperf. */ | |
245 | ||
246 | r = safe_atou16(rvalue, &i); | |
247 | if (r < 0) { | |
248 | log_syntax(unit, LOG_WARNING, filename, line, r, | |
249 | "Failed to parse bridge port priority, ignoring: %s", rvalue); | |
250 | return 0; | |
251 | } | |
252 | ||
253 | if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) { | |
254 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
255 | "Bridge port priority is larger than maximum %u, ignoring: %s", | |
256 | LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue); | |
257 | return 0; | |
258 | } | |
259 | ||
260 | *((uint16_t *)data) = i; | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
3fef7a3f SS |
265 | static void bridge_init(NetDev *n) { |
266 | Bridge *b; | |
267 | ||
268 | b = BRIDGE(n); | |
269 | ||
270 | assert(b); | |
271 | ||
272 | b->mcast_querier = -1; | |
6df6d898 | 273 | b->mcast_snooping = -1; |
c6f8d17d | 274 | b->vlan_filtering = -1; |
4df4df5b | 275 | b->vlan_protocol = -1; |
b760a9af | 276 | b->stp = -1; |
0d6c68eb | 277 | b->default_pvid = VLANID_INVALID; |
730389b6 | 278 | b->forward_delay = USEC_INFINITY; |
0da81203 | 279 | b->ageing_time = USEC_INFINITY; |
3fef7a3f SS |
280 | } |
281 | ||
3be1d7e0 | 282 | const NetDevVTable bridge_vtable = { |
aa9f1140 | 283 | .object_size = sizeof(Bridge), |
3fef7a3f | 284 | .init = bridge_init, |
130b812f | 285 | .sections = NETDEV_COMMON_SECTIONS "Bridge\0", |
540eb5f0 | 286 | .post_create = netdev_bridge_post_create, |
aa9f1140 | 287 | .create_type = NETDEV_CREATE_MASTER, |
9f0cf80d | 288 | .iftype = ARPHRD_ETHER, |
5b8bdd20 | 289 | .generate_mac = true, |
3be1d7e0 | 290 | }; |