netdev - [patch net 5/9] mlxsw: spectrum: Add missing packet traps

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Message-Id: <1471271873-4389-6-git-send-email-jiri@resnulli.us>
Date:	Mon, 15 Aug 2016 16:37:49 +0200
From:	Jiri Pirko <jiri@...nulli.us>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, idosch@...lanox.com, eladr@...lanox.com,
	yotamg@...lanox.com, nogahf@...lanox.com, ogerlitz@...lanox.com
Subject: [patch net 5/9] mlxsw: spectrum: Add missing packet traps

From: Elad Raz <eladr@...lanox.com>

Add the following traps:

1) MTU Error: Trap packets whose size is bigger than the egress RIF's
MTU. If DF bit isn't set, traffic will continue to be routed in slow
path.

2) TTL Error: Trap packets whose TTL expired. This allows traceroute to
work properly.

3) OSPF packets.

Fixes: 7b27ce7bb9cd ("mlxsw: spectrum: Add traps needed for router implementation")
Signed-off-by: Elad Raz <eladr@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 15 +++++++++++++++
 drivers/net/ethernet/mellanox/mlxsw/trap.h     |  3 +++
 2 files changed, 18 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 12681db..6b69c8a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -2651,6 +2651,21 @@ static const struct mlxsw_rx_listener mlxsw_sp_rx_listener[] = {
 	{
 		.func = mlxsw_sp_rx_listener_func,
 		.local_port = MLXSW_PORT_DONT_CARE,
+		.trap_id = MLXSW_TRAP_ID_MTUERROR,
+	},
+	{
+		.func = mlxsw_sp_rx_listener_func,
+		.local_port = MLXSW_PORT_DONT_CARE,
+		.trap_id = MLXSW_TRAP_ID_TTLERROR,
+	},
+	{
+		.func = mlxsw_sp_rx_listener_func,
+		.local_port = MLXSW_PORT_DONT_CARE,
+		.trap_id = MLXSW_TRAP_ID_OSPF,
+	},
+	{
+		.func = mlxsw_sp_rx_listener_func,
+		.local_port = MLXSW_PORT_DONT_CARE,
 		.trap_id = MLXSW_TRAP_ID_IP2ME,
 	},
 	{
diff --git a/drivers/net/ethernet/mellanox/mlxsw/trap.h b/drivers/net/ethernet/mellanox/mlxsw/trap.h
index 470d769..9508e0a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/trap.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/trap.h
@@ -56,6 +56,9 @@ enum {
 	MLXSW_TRAP_ID_IGMP_V3_REPORT = 0x34,
 	MLXSW_TRAP_ID_ARPBC = 0x50,
 	MLXSW_TRAP_ID_ARPUC = 0x51,
+	MLXSW_TRAP_ID_MTUERROR = 0x52,
+	MLXSW_TRAP_ID_TTLERROR = 0x53,
+	MLXSW_TRAP_ID_OSPF = 0x55,
 	MLXSW_TRAP_ID_IP2ME = 0x5F,
 	MLXSW_TRAP_ID_RTR_INGRESS0 = 0x70,
 	MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,
-- 
2.5.5