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net: Pass ndm_state to route netlink FDB notifications. 

Before this change applications monitoring FDB notifications
were not able to determine whether a new FDB entry is permament
or not:
bridge fdb add f1:f2:f3:f4:f5:f8 dev sw0p1 temp self
bridge fdb add f1:f2:f3:f4:f5:f9 dev sw0p1 self

bridge monitor fdb

f1:f2:f3:f4:f5:f8 dev sw0p1 self permanent
f1:f2:f3:f4:f5:f9 dev sw0p1 self permanent

With this change ndm_state from the original netlink message
is passed to the new netlink message sent as notification.

bridge fdb add f1:f2:f3:f4:f5:f6 dev sw0p1 self
bridge fdb add f1:f2:f3:f4:f5:f7 dev sw0p1 temp self

bridge monitor fdb
f1:f2:f3:f4:f5:f6 dev sw0p1 self permanent
f1:f2:f3:f4:f5:f7 dev sw0p1 self static

Signed-off-by: Hubert Sokolowski <hubert.sokolowski@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hubert Sokolowski 2015-12-15 13:20:30 +00:00 committed by David S. Miller
parent 04ad37836c
commit b3379041dd
1 changed files with 10 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
net/core/rtnetlink.c
View File

@ -2564,7 +2564,7 @@ static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
struct net_device *dev,
u8 *addr, u16 vid, u32 pid, u32 seq,
int type, unsigned int flags,
int nlflags)
int nlflags, u16 ndm_state)
{
struct nlmsghdr *nlh;
struct ndmsg *ndm;
@ -2580,7 +2580,7 @@ static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
ndm->ndm_flags = flags;
ndm->ndm_type = 0;
ndm->ndm_ifindex = dev->ifindex;
ndm->ndm_state = NUD_PERMANENT;
ndm->ndm_state = ndm_state;
if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
goto nla_put_failure;
@ -2601,7 +2601,8 @@ static inline size_t rtnl_fdb_nlmsg_size(void)
return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN);
}
static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type)
static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type,
u16 ndm_state)
{
struct net *net = dev_net(dev);
struct sk_buff *skb;
@ -2612,7 +2613,7 @@ static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type)
goto errout;
err = nlmsg_populate_fdb_fill(skb, dev, addr, vid,
0, 0, type, NTF_SELF, 0);
0, 0, type, NTF_SELF, 0, ndm_state);
if (err < 0) {
kfree_skb(skb);
goto errout;
@ -2747,7 +2748,8 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
nlh->nlmsg_flags);
if (!err) {
rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH);
rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH,
ndm->ndm_state);
ndm->ndm_flags &= ~NTF_SELF;
}
}
@ -2848,7 +2850,8 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);
if (!err) {
rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH);
rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH,
ndm->ndm_state);
ndm->ndm_flags &= ~NTF_SELF;
}
}
@ -2876,7 +2879,7 @@ static int nlmsg_populate_fdb(struct sk_buff *skb,
err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0,
portid, seq,
RTM_NEWNEIGH, NTF_SELF,
NLM_F_MULTI);
NLM_F_MULTI, NUD_PERMANENT);
if (err < 0)
return err;
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