20 #include <netlink-private/netlink.h>
21 #include <netlink/netlink.h>
22 #include <netlink/attr.h>
23 #include <netlink/route/rtnl.h>
24 #include <netlink/route/link/bridge.h>
25 #include <netlink-private/route/link/api.h>
26 #include <linux/if_bridge.h>
29 #define BRIDGE_ATTR_PORT_STATE (1 << 0)
30 #define BRIDGE_ATTR_PRIORITY (1 << 1)
31 #define BRIDGE_ATTR_COST (1 << 2)
32 #define BRIDGE_ATTR_FLAGS (1 << 3)
34 #define PRIV_FLAG_NEW_ATTRS (1 << 0)
43 uint32_t b_flags_mask;
47 static struct rtnl_link_af_ops bridge_ops;
49 #define IS_BRIDGE_LINK_ASSERT(link) \
50 if (!rtnl_link_is_bridge(link)) { \
51 APPBUG("A function was expecting a link object of type bridge."); \
52 return -NLE_OPNOTSUPP; \
55 static inline struct bridge_data *bridge_data(
struct rtnl_link *link)
60 static void *bridge_alloc(
struct rtnl_link *link)
62 return calloc(1,
sizeof(
struct bridge_data));
65 static void *bridge_clone(
struct rtnl_link *link,
void *data)
67 struct bridge_data *bd;
69 if ((bd = bridge_alloc(link)))
70 memcpy(bd, data,
sizeof(*bd));
75 static void bridge_free(
struct rtnl_link *link,
void *data)
80 static struct nla_policy br_attrs_policy[IFLA_BRPORT_MAX+1] = {
82 [IFLA_BRPORT_PRIORITY] = { .type =
NLA_U16 },
83 [IFLA_BRPORT_COST] = { .type =
NLA_U32 },
84 [IFLA_BRPORT_MODE] = { .type =
NLA_U8 },
85 [IFLA_BRPORT_GUARD] = { .type =
NLA_U8 },
86 [IFLA_BRPORT_PROTECT] = { .type =
NLA_U8 },
87 [IFLA_BRPORT_FAST_LEAVE] = { .type =
NLA_U8 },
90 static void check_flag(
struct rtnl_link *link,
struct nlattr *attrs[],
97 static int bridge_parse_protinfo(
struct rtnl_link *link,
struct nlattr *attr,
100 struct bridge_data *bd = data;
101 struct nlattr *br_attrs[IFLA_BRPORT_MAX+1];
110 bd->ce_mask |= BRIDGE_ATTR_PORT_STATE;
116 br_attrs_policy)) < 0)
119 bd->b_priv_flags |= PRIV_FLAG_NEW_ATTRS;
121 if (br_attrs[IFLA_BRPORT_STATE]) {
122 bd->b_port_state =
nla_get_u8(br_attrs[IFLA_BRPORT_STATE]);
123 bd->ce_mask |= BRIDGE_ATTR_PORT_STATE;
126 if (br_attrs[IFLA_BRPORT_PRIORITY]) {
127 bd->b_priority =
nla_get_u16(br_attrs[IFLA_BRPORT_PRIORITY]);
128 bd->ce_mask |= BRIDGE_ATTR_PRIORITY;
131 if (br_attrs[IFLA_BRPORT_COST]) {
132 bd->b_cost =
nla_get_u32(br_attrs[IFLA_BRPORT_COST]);
133 bd->ce_mask |= BRIDGE_ATTR_COST;
136 check_flag(link, br_attrs, IFLA_BRPORT_MODE, RTNL_BRIDGE_HAIRPIN_MODE);
137 check_flag(link, br_attrs, IFLA_BRPORT_GUARD, RTNL_BRIDGE_BPDU_GUARD);
138 check_flag(link, br_attrs, IFLA_BRPORT_PROTECT, RTNL_BRIDGE_ROOT_BLOCK);
139 check_flag(link, br_attrs, IFLA_BRPORT_FAST_LEAVE, RTNL_BRIDGE_FAST_LEAVE);
144 static void bridge_dump_details(
struct rtnl_link *link,
147 struct bridge_data *bd = data;
149 nl_dump_line(p,
" bridge: ");
151 if (bd->ce_mask & BRIDGE_ATTR_PORT_STATE)
152 nl_dump(p,
"port-state %u ", bd->b_port_state);
154 if (bd->ce_mask & BRIDGE_ATTR_PRIORITY)
155 nl_dump(p,
"prio %u ", bd->b_priority);
157 if (bd->ce_mask & BRIDGE_ATTR_COST)
158 nl_dump(p,
"cost %u ", bd->b_cost);
164 int family, uint32_t attrs,
int flags)
166 struct bridge_data *a = bridge_data(_a);
167 struct bridge_data *b = bridge_data(_b);
170 #define BRIDGE_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, BRIDGE_ATTR_##ATTR, a, b, EXPR)
171 diff |= BRIDGE_DIFF(PORT_STATE, a->b_port_state != b->b_port_state);
172 diff |= BRIDGE_DIFF(PRIORITY, a->b_priority != b->b_priority);
173 diff |= BRIDGE_DIFF(COST, a->b_cost != b->b_cost);
175 if (flags & LOOSE_COMPARISON)
176 diff |= BRIDGE_DIFF(FLAGS,
177 (a->b_flags ^ b->b_flags) & b->b_flags_mask);
179 diff |= BRIDGE_DIFF(FLAGS, a->b_flags != b->b_flags);
215 return link->l_family == AF_BRIDGE &&
216 link->l_af_ops == &bridge_ops;
234 struct bridge_data *bd;
239 bd = bridge_data(link);
240 return !!(bd->b_priv_flags & PRIV_FLAG_NEW_ATTRS);
263 struct bridge_data *bd = bridge_data(link);
265 IS_BRIDGE_LINK_ASSERT(link);
267 if (state > BR_STATE_BLOCKING)
270 bd->b_port_state = state;
271 bd->ce_mask |= BRIDGE_ATTR_PORT_STATE;
287 struct bridge_data *bd = bridge_data(link);
289 IS_BRIDGE_LINK_ASSERT(link);
291 return bd->b_port_state;
306 struct bridge_data *bd = bridge_data(link);
308 IS_BRIDGE_LINK_ASSERT(link);
310 bd->b_priority = prio;
311 bd->ce_mask |= BRIDGE_ATTR_PRIORITY;
327 struct bridge_data *bd = bridge_data(link);
329 IS_BRIDGE_LINK_ASSERT(link);
331 return bd->b_priority;
346 struct bridge_data *bd = bridge_data(link);
348 IS_BRIDGE_LINK_ASSERT(link);
351 bd->ce_mask |= BRIDGE_ATTR_COST;
369 struct bridge_data *bd = bridge_data(link);
371 IS_BRIDGE_LINK_ASSERT(link);
394 struct bridge_data *bd = bridge_data(link);
396 IS_BRIDGE_LINK_ASSERT(link);
398 bd->b_flags_mask |= flags;
399 bd->b_flags &= ~flags;
400 bd->ce_mask |= BRIDGE_ATTR_FLAGS;
424 struct bridge_data *bd = bridge_data(link);
426 IS_BRIDGE_LINK_ASSERT(link);
428 bd->b_flags_mask |= flags;
429 bd->b_flags |= flags;
430 bd->ce_mask |= BRIDGE_ATTR_FLAGS;
447 struct bridge_data *bd = bridge_data(link);
449 IS_BRIDGE_LINK_ASSERT(link);
454 static struct rtnl_link_af_ops bridge_ops = {
455 .ao_family = AF_BRIDGE,
456 .ao_alloc = &bridge_alloc,
457 .ao_clone = &bridge_clone,
458 .ao_free = &bridge_free,
459 .ao_parse_protinfo = &bridge_parse_protinfo,
461 .ao_compare = &bridge_compare,
464 static void __init bridge_init(
void)
469 static void __exit bridge_exit(
void)