[patch net-next 18/21] mlxsw: spectrum: Register for IPIP_DECAP_ERROR trap

[Jiri Pirko]

From: Petr Machata <pe...@mellanox.com>

These traps are generated for packets that fail checks for source IP,
encapsulation type, or GRE key. Trap these packets to CPU for follow-up
handling by the kernel, which will send ICMP destination unreachable
responses.

Signed-off-by: Petr Machata <pe...@mellanox.com>
Reviewed-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 1 +
 drivers/net/ethernet/mellanox/mlxsw/trap.h     | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 992cbfa..ed7cd6c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -3400,6 +3400,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
        MLXSW_SP_RXL_MARK(HOST_MISS_IPV6, TRAP_TO_CPU, HOST_MISS, false),
        MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV4, TRAP_TO_CPU, ROUTER_EXP, false),
        MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV6, TRAP_TO_CPU, ROUTER_EXP, false),
+       MLXSW_SP_RXL_MARK(IPIP_DECAP_ERROR, TRAP_TO_CPU, ROUTER_EXP, false),
        /* PKT Sample trap */
        MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU,
                  false, SP_IP2ME, DISCARD),
diff --git a/drivers/net/ethernet/mellanox/mlxsw/trap.h 
b/drivers/net/ethernet/mellanox/mlxsw/trap.h
index 6165239..f396a1f 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/trap.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/trap.h
@@ -85,6 +85,7 @@ enum {
        MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,
        MLXSW_TRAP_ID_IPV6_MC_LINK_LOCAL_DEST = 0x91,
        MLXSW_TRAP_ID_HOST_MISS_IPV6 = 0x92,
+       MLXSW_TRAP_ID_IPIP_DECAP_ERROR = 0xB1,
        MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
        MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7,
        MLXSW_TRAP_ID_ACL0 = 0x1C0,
-- 
2.9.3