netdev - [PATCH] net-netlink: Add a new attribute to expose TCLASS values via netlink

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Date:	Mon,  7 Nov 2011 16:23:11 -0800
From:	Maciej Żenczykowski <zenczykowski@...il.com>
To:	Maciej Żenczykowski <maze@...gle.com>
Cc:	netdev@...r.kernel.org,
	Maciej Żenczykowski <maze@...gle.com>,
	Murali Raja <muralira@...gle.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [PATCH] net-netlink: Add a new attribute to expose TCLASS values via netlink

From: Maciej Żenczykowski <maze@...gle.com>

commit 3ceca749668a52bd795585e0f71c6f0b04814f7b added a TOS attribute.

Unfortunately TOS and TCLASS are both present in a dual-stack v6 socket,
furthermore they can have different values.  As such one cannot in a
sane way expose both through a single attribute.

Signed-off-by: Maciej Żenczyowski <maze@...gle.com>
CC: Murali Raja <muralira@...gle.com>
CC: Stephen Hemminger <shemminger@...tta.com>
CC: Eric Dumazet <eric.dumazet@...il.com>
CC: David S. Miller <davem@...emloft.net>
---
 include/linux/inet_diag.h |    3 ++-
 net/ipv4/inet_diag.c      |    4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index 80b480c..abf5028 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h
@@ -98,9 +98,10 @@ enum {
 	INET_DIAG_VEGASINFO,
 	INET_DIAG_CONG,
 	INET_DIAG_TOS,
+	INET_DIAG_TCLASS,
 };
 
-#define INET_DIAG_MAX INET_DIAG_TOS
+#define INET_DIAG_MAX INET_DIAG_TCLASS
 
 
 /* INET_DIAG_MEM */
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index f5e2bda..68e8ac5 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -133,8 +133,8 @@ static int inet_csk_diag_fill(struct sock *sk,
 			       &np->rcv_saddr);
 		ipv6_addr_copy((struct in6_addr *)r->id.idiag_dst,
 			       &np->daddr);
-		if (ext & (1 << (INET_DIAG_TOS - 1)))
-			RTA_PUT_U8(skb, INET_DIAG_TOS, np->tclass);
+		if (ext & (1 << (INET_DIAG_TCLASS - 1)))
+			RTA_PUT_U8(skb, INET_DIAG_TCLASS, np->tclass);
 	}
 #endif
 
-- 
1.7.3.1

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