netdev - [PATCH iproute2 v2] bridge: Add master device name to bridge fdb show

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Message-Id: <1401512685-29047-1-git-send-email-roopa@cumulusnetworks.com>
Date:	Fri, 30 May 2014 22:04:45 -0700
From:	roopa@...ulusnetworks.com
To:	davem@...emloft.net, stephen@...workplumber.org,
	netdev@...r.kernel.org, roopa@...ulusnetworks.com
Cc:	jhs@...atatu.com, wkok@...ulusnetworks.com,
	sfeldma@...ulusnetworks.com, shm@...ulusnetworks.com
Subject: [PATCH iproute2 v2] bridge: Add master device name to bridge fdb show

From: Roopa Prabhu <roopa@...ulusnetworks.com>

(This patch depends on net-next patch titled
"Add bridge ifindex to bridge fdb notify msgs")

This patch adds bridge dev name from NDA_MASTER netlink attribute
 to bridge fdb show output

Example output:

before this patch:
# bridge fdb show
44:38:39:00:27:ba dev bond2.2003 permanent
44:38:39:00:27:bb dev bond4.2003 permanent
44:38:39:00:27:bc dev bond2.2004 permanent

After this patch:
# bridge fdb show
44:38:39:00:27:ba dev bond2.2003 bridge br-2003 permanent
44:38:39:00:27:bb dev bond4.2003 bridge br-2003 permanent
44:38:39:00:27:bc dev bond2.2004 bridge br-2004 permanent

change from v1 to v2:
    use 'bridge' instead of 'master' in fdb show output

Signed-off-by: Wilson Kok <wkok@...ulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@...ulusnetworks.com>
---
 bridge/fdb.c              |    4 ++++
 include/linux/neighbour.h |    1 +
 2 files changed, 5 insertions(+)

diff --git a/bridge/fdb.c b/bridge/fdb.c
index 336cf9d..d7c42f0 100644
--- a/bridge/fdb.c
+++ b/bridge/fdb.c
@@ -152,6 +152,10 @@ int print_fdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 	if (r->ndm_flags & NTF_ROUTER)
 		fprintf(fp, "router ");
 
+	if (tb[NDA_MASTER])
+		fprintf(fp, "bridge %s ",
+			ll_index_to_name(rta_getattr_u32(tb[NDA_MASTER])));
+
 	fprintf(fp, "%s\n", state_n2a(r->ndm_state));
 	return 0;
 }
diff --git a/include/linux/neighbour.h b/include/linux/neighbour.h
index d3ef583..4a1d7e9 100644
--- a/include/linux/neighbour.h
+++ b/include/linux/neighbour.h
@@ -24,6 +24,7 @@ enum {
 	NDA_PORT,
 	NDA_VNI,
 	NDA_IFINDEX,
+	NDA_MASTER,
 	__NDA_MAX
 };
 
-- 
1.7.10.4

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