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mlxsw: Add layer 3 devlink-trap support

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Add the trap IDs and trap group used to report layer 3 drops. Register
layer 3 packet traps and associated layer 3 trap group with devlink
during driver initialization.

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 2019-11-07 18:42:10 +02:00 • committed by David S. Miller
parent 6896cc4d8f
commit dbc684f158
3 changed files with 49 additions and 0 deletions
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1
drivers/net/ethernet/mellanox/mlxsw/reg.h
View file

@ -5480,6 +5480,7 @@ enum mlxsw_reg_htgt_trap_group {
enum mlxsw_reg_htgt_discard_trap_group {
MLXSW_REG_HTGT_DISCARD_TRAP_GROUP_BASE = MLXSW_REG_HTGT_TRAP_GROUP_MAX,
MLXSW_REG_HTGT_TRAP_GROUP_SP_L2_DISCARDS,
MLXSW_REG_HTGT_TRAP_GROUP_SP_L3_DISCARDS,
};
/* reg_htgt_trap_group

37
drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
View file

@ -30,6 +30,16 @@ static struct devlink_trap mlxsw_sp_traps_arr[] = {
MLXSW_SP_TRAP_DROP(INGRESS_STP_FILTER, L2_DROPS),
MLXSW_SP_TRAP_DROP(EMPTY_TX_LIST, L2_DROPS),
MLXSW_SP_TRAP_DROP(PORT_LOOPBACK_FILTER, L2_DROPS),
MLXSW_SP_TRAP_DROP(BLACKHOLE_ROUTE, L3_DROPS),
MLXSW_SP_TRAP_DROP(NON_IP_PACKET, L3_DROPS),
MLXSW_SP_TRAP_DROP(UC_DIP_MC_DMAC, L3_DROPS),
MLXSW_SP_TRAP_DROP(DIP_LB, L3_DROPS),
MLXSW_SP_TRAP_DROP(SIP_MC, L3_DROPS),
MLXSW_SP_TRAP_DROP(SIP_LB, L3_DROPS),
MLXSW_SP_TRAP_DROP(CORRUPTED_IP_HDR, L3_DROPS),
MLXSW_SP_TRAP_DROP(IPV4_SIP_BC, L3_DROPS),
MLXSW_SP_TRAP_DROP(IPV6_MC_DIP_RESERVED_SCOPE, L3_DROPS),
MLXSW_SP_TRAP_DROP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, L3_DROPS),
};
static struct mlxsw_listener mlxsw_sp_listeners_arr[] = {
@ -40,6 +50,16 @@ static struct mlxsw_listener mlxsw_sp_listeners_arr[] = {
MLXSW_SP_RXL_DISCARD(LOOKUP_SWITCH_UC, L2_DISCARDS),
MLXSW_SP_RXL_DISCARD(LOOKUP_SWITCH_MC_NULL, L2_DISCARDS),
MLXSW_SP_RXL_DISCARD(LOOKUP_SWITCH_LB, L2_DISCARDS),
MLXSW_SP_RXL_DISCARD(ROUTER2, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_NON_IP_PACKET, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_UC_DIP_MC_DMAC, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_DIP_LB, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_SIP_MC, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_SIP_LB, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_CORRUPTED_IP_HDR, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(ING_ROUTER_IPV4_SIP_BC, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(IPV6_MC_DIP_RESERVED_SCOPE, L3_DISCARDS),
MLXSW_SP_RXL_DISCARD(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, L3_DISCARDS),
};
/* Mapping between hardware trap and devlink trap. Multiple hardware traps can
@ -54,6 +74,16 @@ static u16 mlxsw_sp_listener_devlink_map[] = {
DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
DEVLINK_TRAP_GENERIC_ID_PORT_LOOPBACK_FILTER,
DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
DEVLINK_TRAP_GENERIC_ID_NON_IP_PACKET,
DEVLINK_TRAP_GENERIC_ID_UC_DIP_MC_DMAC,
DEVLINK_TRAP_GENERIC_ID_DIP_LB,
DEVLINK_TRAP_GENERIC_ID_SIP_MC,
DEVLINK_TRAP_GENERIC_ID_SIP_LB,
DEVLINK_TRAP_GENERIC_ID_CORRUPTED_IP_HDR,
DEVLINK_TRAP_GENERIC_ID_IPV4_SIP_BC,
DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_RESERVED_SCOPE,
DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE,
};
static int mlxsw_sp_rx_listener(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb,
@ -211,6 +241,7 @@ mlxsw_sp_trap_group_policer_init(struct mlxsw_sp *mlxsw_sp,
u32 rate;
switch (group->id) {
case DEVLINK_TRAP_GROUP_GENERIC_ID_L3_DROPS:/* fall through */
case DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS:
policer_id = MLXSW_SP_DISCARD_POLICER_ID;
ir_units = MLXSW_REG_QPCR_IR_UNITS_M;
@ -242,6 +273,12 @@ __mlxsw_sp_trap_group_init(struct mlxsw_sp *mlxsw_sp,
priority = 0;
tc = 1;
break;
case DEVLINK_TRAP_GROUP_GENERIC_ID_L3_DROPS:
group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_L3_DISCARDS;
policer_id = MLXSW_SP_DISCARD_POLICER_ID;
priority = 0;
tc = 1;
break;
default:
return -EINVAL;
}

11
drivers/net/ethernet/mellanox/mlxsw/trap.h
View file

@ -66,6 +66,7 @@ enum {
MLXSW_TRAP_ID_NVE_ENCAP_ARP = 0xBD,
MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7,
MLXSW_TRAP_ID_DISCARD_ROUTER2 = 0x130,
MLXSW_TRAP_ID_DISCARD_ING_PACKET_SMAC_MC = 0x140,
MLXSW_TRAP_ID_DISCARD_ING_SWITCH_VTAG_ALLOW = 0x148,
MLXSW_TRAP_ID_DISCARD_ING_SWITCH_VLAN = 0x149,
@ -73,6 +74,16 @@ enum {
MLXSW_TRAP_ID_DISCARD_LOOKUP_SWITCH_UC = 0x150,
MLXSW_TRAP_ID_DISCARD_LOOKUP_SWITCH_MC_NULL = 0x151,
MLXSW_TRAP_ID_DISCARD_LOOKUP_SWITCH_LB = 0x152,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_NON_IP_PACKET = 0x160,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_UC_DIP_MC_DMAC = 0x161,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_DIP_LB = 0x162,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_SIP_MC = 0x163,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_SIP_LB = 0x165,
MLXSW_TRAP_ID_DISCARD_ING_ROUTER_CORRUPTED_IP_HDR = 0x167,
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_IPV6_MC_DIP_RESERVED_SCOPE = 0x1B0,
MLXSW_TRAP_ID_DISCARD_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE = 0x1B1,
MLXSW_TRAP_ID_ACL0 = 0x1C0,
/* Multicast trap used for routes with trap action */
MLXSW_TRAP_ID_ACL1 = 0x1C1,