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Commit 7607dd35 authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

mlxsw: spectrum: Trap IPv4 packets with Router Alert option 



In case local sockets have the IP_ROUTER_ALERT socket option set, then
they expect to get packets with the Router Alert option.

Trap such packets, so that the kernel could inspect them and potentially
send them to interested sockets.

Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0fcc4847

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

+1 −0
Original line number Diff line number Diff line
@@ -3342,6 +3342,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = { 
	MLXSW_SP_RXL_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false),

	MLXSW_SP_RXL_MARK(HOST_MISS_IPV4, TRAP_TO_CPU, ARP_MISS, false),

	MLXSW_SP_RXL_MARK(BGP_IPV4, TRAP_TO_CPU, BGP_IPV4, false),

	MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV4, 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),

drivers/net/ethernet/mellanox/mlxsw/trap.h

+1 −0
Original line number Diff line number Diff line
@@ -66,6 +66,7 @@ enum { 
	MLXSW_TRAP_ID_RTR_INGRESS0 = 0x70,

	MLXSW_TRAP_ID_BGP_IPV4 = 0x88,

	MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,

	MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,

	MLXSW_TRAP_ID_ACL0 = 0x1C0,



	MLXSW_TRAP_ID_MAX = 0x1FF