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mlxsw: spectrum: Disable DIP_LINK_LOCAL check in hardware pipeline 

The check drops packets if they need to be routed and their destination
IP is link-local, i.e., belongs to 169.254.0.0/16 address range.

Disable the check since the kernel forwards such packets and does not
drop them.

Signed-off-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Cohen 2020-01-05 18:20:56 +02:00 committed by David S. Miller
parent 6e734f863c
commit ca360db4b8
2 changed files with 3 additions and 0 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/spectrum.c
View File

@ -4551,6 +4551,8 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
ROUTER_EXP, false),
MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_SIP_DIP, FORWARD,
ROUTER_EXP, false),
MLXSW_SP_RXL_NO_MARK(DISCARD_ING_ROUTER_DIP_LINK_LOCAL, FORWARD,
ROUTER_EXP, false),
/* PKT Sample trap */
MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU,
false, SP_IP2ME, DISCARD),

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

@ -87,6 +87,7 @@ enum {
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_SIP_DIP = 0x169,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_IPV4_SIP_BC = 0x16A,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_IPV4_DIP_LOCAL_NET = 0x16B,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_DIP_LINK_LOCAL = 0x16C,
MLXSW_TRAP_ID_DISCARD_ROUTER_LPM4 = 0x17B,
MLXSW_TRAP_ID_DISCARD_ROUTER_LPM6 = 0x17C,
MLXSW_TRAP_ID_DISCARD_IPV6_MC_DIP_RESERVED_SCOPE = 0x1B0,