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mlxsw: spectrum: Trap IPv4 DHCP packets in router

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Currently, IPv4 DHCP packets are trapped during L2 forwarding, which
means that packets might be trapped unnecessarily. Instead, only trap
the DHCP packets that reach the router. Either because they were flooded
to the router port or forwarded to it by the FDB. This is consistent
with the corresponding IPv6 trap.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2020-05-25 00:50:59 +03:00 committed by David S. Miller
parent 99129069b7
commit 0ecb947412
2 changed files with 2 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View file

@ -4045,7 +4045,6 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
MLXSW_SP_RXL_NO_MARK(LACP, TRAP_TO_CPU, LACP, true),
MLXSW_RXL(mlxsw_sp_rx_listener_ptp, LLDP, TRAP_TO_CPU,
false, SP_LLDP, DISCARD),
MLXSW_SP_RXL_MARK(DHCP, MIRROR_TO_CPU, DHCP, false),
MLXSW_SP_RXL_MARK(IGMP_QUERY, MIRROR_TO_CPU, MC_SNOOPING, false),
MLXSW_SP_RXL_NO_MARK(IGMP_V1_REPORT, TRAP_TO_CPU, MC_SNOOPING, false),
MLXSW_SP_RXL_NO_MARK(IGMP_V2_REPORT, TRAP_TO_CPU, MC_SNOOPING, false),
@ -4074,6 +4073,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
false),
MLXSW_SP_RXL_MARK(IPV4_OSPF, TRAP_TO_CPU, OSPF, false),
MLXSW_SP_RXL_MARK(IPV6_OSPF, TRAP_TO_CPU, OSPF, false),
MLXSW_SP_RXL_MARK(IPV4_DHCP, TRAP_TO_CPU, DHCP, false),
MLXSW_SP_RXL_MARK(IPV6_DHCP, TRAP_TO_CPU, DHCP, false),
MLXSW_SP_RXL_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false),
MLXSW_SP_RXL_MARK(IPV4_BGP, TRAP_TO_CPU, BGP, false),

1
drivers/net/ethernet/mellanox/mlxsw/trap.h
View file

@ -59,6 +59,7 @@ enum {
MLXSW_TRAP_ID_L3_IPV6_NEIGHBOR_SOLICITATION = 0x8C,
MLXSW_TRAP_ID_L3_IPV6_NEIGHBOR_ADVERTISMENT = 0x8D,
MLXSW_TRAP_ID_L3_IPV6_REDIRECTION = 0x8E,
MLXSW_TRAP_ID_IPV4_DHCP = 0x8F,
MLXSW_TRAP_ID_HOST_MISS_IPV4 = 0x90,
MLXSW_TRAP_ID_IPV6_MC_LINK_LOCAL_DEST = 0x91,
MLXSW_TRAP_ID_HOST_MISS_IPV6 = 0x92,