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: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -3342,6 +3342,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
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MLXSW_SP_RXL_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false),
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MLXSW_SP_RXL_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false),
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MLXSW_SP_RXL_MARK(HOST_MISS_IPV4, TRAP_TO_CPU, ARP_MISS, false),
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MLXSW_SP_RXL_MARK(HOST_MISS_IPV4, TRAP_TO_CPU, ARP_MISS, false),
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MLXSW_SP_RXL_MARK(BGP_IPV4, TRAP_TO_CPU, BGP_IPV4, false),
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MLXSW_SP_RXL_MARK(BGP_IPV4, TRAP_TO_CPU, BGP_IPV4, false),
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MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV4, TRAP_TO_CPU, ROUTER_EXP, false),
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/* PKT Sample trap */
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/* PKT Sample trap */
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MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU,
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MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU,
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false, SP_IP2ME, DISCARD),
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false, SP_IP2ME, DISCARD),
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@ -66,6 +66,7 @@ enum {
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MLXSW_TRAP_ID_RTR_INGRESS0 = 0x70,
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MLXSW_TRAP_ID_RTR_INGRESS0 = 0x70,
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MLXSW_TRAP_ID_BGP_IPV4 = 0x88,
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MLXSW_TRAP_ID_BGP_IPV4 = 0x88,
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MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,
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MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,
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MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
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MLXSW_TRAP_ID_ACL0 = 0x1C0,
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MLXSW_TRAP_ID_ACL0 = 0x1C0,
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MLXSW_TRAP_ID_MAX = 0x1FF
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MLXSW_TRAP_ID_MAX = 0x1FF
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