Re: [RFC PATCH net-next 3/3] bridge: Implement IFF_UNICAST_FLT

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On 03/06/2013 06:31 PM, Vlad Yasevich wrote:
Implement IFF_UNICAST_FLT on the bridge.  Unicast addresses added
to the bridge device are synched to the uplink devices.  This
allows for uplink devices to change while preserving mac assignment.

Signed-off-by: Vlad Yasevich <vyasevic@xxxxxxxxxx>
---

[...]

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index b0812c9..ef7b51e 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -677,6 +677,9 @@ int br_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
  	struct net_port_vlans *pv;
  	unsigned short vid = VLAN_N_VID;

+	if ((ndm->ndm_flags & NTF_SELF) && (dev->priv_flags & IFF_EBRIDGE))
+		return ndo_dflt_fdb_add(ndm, tb, dev, addr, nlh_flags);
+
  	if (!(ndm->ndm_state & (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE))) {
  		pr_info("bridge: RTM_NEWNEIGH with invalid state %#x\n", ndm->ndm_state);
  		return -EINVAL;
@@ -774,6 +777,9 @@ int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
  	struct net_port_vlans *pv;
  	unsigned short vid = VLAN_N_VID;

+	if ((ndm->ndm_flags & NTF_SELF) && (dev->priv_flags & IFF_EBRIDGE))
+		return ndo_dflt_fdb_del(ndm, tb, dev, addr);
+
  	if (tb[NDA_VLAN]) {
  		if (nla_len(tb[NDA_VLAN]) != sizeof(unsigned short)) {
  			pr_info("bridge: RTM_NEWNEIGH with invalid vlan\n");


How is this different then calling the fdb op from rtnetlink.c when the
NTF_SELF bit is set after your previous patch

	net: generic fdb support for drivers without ndo_fdb_<op>

the generic routine gets called if a specific op is not supplied via
ndo ops anyways right?

Also I suspect if the driver supplies a specific ndo_fdb_<op> we should
use it over the generic one.

What am I missing?

Thanks,
John

--
John Fastabend         Intel Corporation


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