netdev - [PATCH iproute2-next 6/6] bridge: mdb: print protocol when available

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Date:   Thu,  8 Oct 2020 16:50:24 +0300
From:   Nikolay Aleksandrov <razor@...ckwall.org>
To:     netdev@...r.kernel.org
Cc:     roopa@...dia.com, dsahern@...il.com,
        Nikolay Aleksandrov <nikolay@...dia.com>
Subject: [PATCH iproute2-next 6/6] bridge: mdb: print protocol when available

From: Nikolay Aleksandrov <nikolay@...dia.com>

Print the mdb entry's protocol (i.e. who added it)  when it's available if
the user requested to show details (-d). Currently the only possible
values are RTPROT_STATIC (user-space added) or RTPROT_KERNEL
(automatically added by kernel). The value is kernel controlled.

Signed-off-by: Nikolay Aleksandrov <nikolay@...dia.com>
---
 bridge/mdb.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bridge/mdb.c b/bridge/mdb.c
index b3b58a2385ca..4cd7ca762b78 100644
--- a/bridge/mdb.c
+++ b/bridge/mdb.c
@@ -203,6 +203,13 @@ static void print_mdb_entry(FILE *f, int ifindex, const struct br_mdb_entry *e,
 			}
 			close_json_array(PRINT_JSON, NULL);
 		}
+		if (tb[MDBA_MDB_EATTR_RTPROT]) {
+			__u8 rtprot = rta_getattr_u8(tb[MDBA_MDB_EATTR_RTPROT]);
+			SPRINT_BUF(rtb);
+
+			print_string(PRINT_ANY, "protocol", " proto %s ",
+				     rtnl_rtprot_n2a(rtprot, rtb, sizeof(rtb)));
+		}
 	}
 
 	open_json_array(PRINT_JSON, "flags");
-- 
2.25.4