[PATCH net-next] net: Pass ndm_state to route netlink FDB notifications.
From: Sokolowski, Hubert <hidden>
Date: 2015-12-15 13:24:02
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 <redacted> --- net/core/rtnetlink.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 34ba7a0..3974a9a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c@@ -2563,7 +2563,7 @@ 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;
@@ -2579,7 +2579,7 @@ 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;
@@ -2600,7 +2600,8 @@ 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;
@@ -2611,7 +2612,7 @@ 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;
@@ -2746,7 +2747,8 @@ 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; } }
@@ -2847,7 +2849,8 @@ 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; } }
@@ -2875,7 +2878,7 @@ 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; skip:
--
2.1.0
--
Hubert Sokolowski Intel Corporation