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net: bridge: multicast: include router port vlan id in notifications

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Use the port multicast context to check if the router port is a vlan and
in case it is include its vlan id in the notification.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2021-07-19 20:06:33 +03:00 committed by David S. Miller
parent 615cc23e62
commit 1e9ca45662
4 changed files with 26 additions and 10 deletions
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1
include/uapi/linux/if_bridge.h
View File

@ -629,6 +629,7 @@ enum {
MDBA_ROUTER_PATTR_TYPE,
MDBA_ROUTER_PATTR_INET_TIMER,
MDBA_ROUTER_PATTR_INET6_TIMER,
MDBA_ROUTER_PATTR_VID,
__MDBA_ROUTER_PATTR_MAX
};
#define MDBA_ROUTER_PATTR_MAX (__MDBA_ROUTER_PATTR_MAX - 1)

29
net/bridge/br_mdb.c
View File

@ -781,12 +781,12 @@ errout:
static int nlmsg_populate_rtr_fill(struct sk_buff *skb,
struct net_device *dev,
int ifindex, u32 pid,
int ifindex, u16 vid, u32 pid,
u32 seq, int type, unsigned int flags)
{
struct nlattr *nest, *port_nest;
struct br_port_msg *bpm;
struct nlmsghdr *nlh;
struct nlattr *nest;
nlh = nlmsg_put(skb, pid, seq, type, sizeof(*bpm), 0);
if (!nlh)
@ -800,8 +800,18 @@ static int nlmsg_populate_rtr_fill(struct sk_buff *skb,
if (!nest)
goto cancel;
if (nla_put_u32(skb, MDBA_ROUTER_PORT, ifindex))
port_nest = nla_nest_start_noflag(skb, MDBA_ROUTER_PORT);
if (!port_nest)
goto end;
if (nla_put_nohdr(skb, sizeof(u32), &ifindex)) {
nla_nest_cancel(skb, port_nest);
goto end;
}
if (vid && nla_put_u16(skb, MDBA_ROUTER_PATTR_VID, vid)) {
nla_nest_cancel(skb, port_nest);
goto end;
}
nla_nest_end(skb, port_nest);
nla_nest_end(skb, nest);
nlmsg_end(skb, nlh);
@ -817,23 +827,28 @@ cancel:
static inline size_t rtnl_rtr_nlmsg_size(void)
{
return NLMSG_ALIGN(sizeof(struct br_port_msg))
+ nla_total_size(sizeof(__u32));
+ nla_total_size(sizeof(__u32))
+ nla_total_size(sizeof(u16));
}
void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx,
int type)
{
struct net *net = dev_net(dev);
struct sk_buff *skb;
int err = -ENOBUFS;
int ifindex;
u16 vid;
ifindex = port ? port->dev->ifindex : 0;
ifindex = pmctx ? pmctx->port->dev->ifindex : 0;
vid = pmctx && br_multicast_port_ctx_is_vlan(pmctx) ? pmctx->vlan->vid :
0;
skb = nlmsg_new(rtnl_rtr_nlmsg_size(), GFP_ATOMIC);
if (!skb)
goto errout;
err = nlmsg_populate_rtr_fill(skb, dev, ifindex, 0, 0, type, NTF_SELF);
err = nlmsg_populate_rtr_fill(skb, dev, ifindex, vid, 0, 0, type,
NTF_SELF);
if (err < 0) {
kfree_skb(skb);
goto errout;

4
net/bridge/br_multicast.c
View File

@ -2979,7 +2979,7 @@ static void br_multicast_add_router(struct net_bridge_mcast *brmctx,
* IPv4 or IPv6 multicast router.
*/
if (br_multicast_no_router_otherpf(pmctx, rlist)) {
br_rtr_notify(pmctx->port->br->dev, pmctx->port, RTM_NEWMDB);
br_rtr_notify(pmctx->port->br->dev, pmctx, RTM_NEWMDB);
br_port_mc_router_state_change(pmctx->port, true);
}
}
@ -4078,7 +4078,7 @@ br_multicast_rport_del_notify(struct net_bridge_mcast_port *pmctx, bool deleted)
return;
#endif
br_rtr_notify(pmctx->port->br->dev, pmctx->port, RTM_DELMDB);
br_rtr_notify(pmctx->port->br->dev, pmctx, RTM_DELMDB);
br_port_mc_router_state_change(pmctx->port, false);
/* don't allow timer refresh */

2
net/bridge/br_private.h
View File

@ -872,7 +872,7 @@ int br_mdb_hash_init(struct net_bridge *br);
void br_mdb_hash_fini(struct net_bridge *br);
void br_mdb_notify(struct net_device *dev, struct net_bridge_mdb_entry *mp,
struct net_bridge_port_group *pg, int type);
void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
void br_rtr_notify(struct net_device *dev, struct net_bridge_mcast_port *pmctx,
int type);
void br_multicast_del_pg(struct net_bridge_mdb_entry *mp,
struct net_bridge_port_group *pg,