Amit Cohen 4b1cc357f8 mlxsw: Trap ARP packets at layer 3 instead of layer 2
Currently, the traps 'ARP_REQUEST' and 'ARP_RESPONSE' occur at layer 2.
To allow the packets to be flooded, they are configured with the action
'MIRROR_TO_CPU' which means that the CPU receives a replica of the packet.

Today, Spectrum ASICs also support trapping ARP packets at layer 3. This
behavior is better, then the packets can just be trapped and there is no
need to mirror them. An additional motivation is that using the traps at
layer 2, the ARP packets are dropped in the router as they do not have an
IP header, then they are counted as error packets, which might confuse
users.

Add the relevant traps for layer 3 and use them instead of the existing
traps. There is no visible change to user space.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-06-17 10:31:33 +01:00

145 lines
5.4 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
#ifndef _MLXSW_TRAP_H
#define _MLXSW_TRAP_H
enum {
/* Ethernet EMAD and FDB miss */
MLXSW_TRAP_ID_FDB_MC = 0x01,
MLXSW_TRAP_ID_ETHEMAD = 0x05,
/* L2 traps for specific packet types */
MLXSW_TRAP_ID_STP = 0x10,
MLXSW_TRAP_ID_LACP = 0x11,
MLXSW_TRAP_ID_EAPOL = 0x12,
MLXSW_TRAP_ID_LLDP = 0x13,
MLXSW_TRAP_ID_MMRP = 0x14,
MLXSW_TRAP_ID_MVRP = 0x15,
MLXSW_TRAP_ID_RPVST = 0x16,
MLXSW_TRAP_ID_DHCP = 0x19,
MLXSW_TRAP_ID_PTP0 = 0x28,
MLXSW_TRAP_ID_PTP1 = 0x29,
MLXSW_TRAP_ID_IGMP_QUERY = 0x30,
MLXSW_TRAP_ID_IGMP_V1_REPORT = 0x31,
MLXSW_TRAP_ID_IGMP_V2_REPORT = 0x32,
MLXSW_TRAP_ID_IGMP_V2_LEAVE = 0x33,
MLXSW_TRAP_ID_IGMP_V3_REPORT = 0x34,
MLXSW_TRAP_ID_PKT_SAMPLE = 0x38,
MLXSW_TRAP_ID_FID_MISS = 0x3D,
MLXSW_TRAP_ID_DECAP_ECN0 = 0x40,
MLXSW_TRAP_ID_MTUERROR = 0x52,
MLXSW_TRAP_ID_TTLERROR = 0x53,
MLXSW_TRAP_ID_LBERROR = 0x54,
MLXSW_TRAP_ID_IPV4_OSPF = 0x55,
MLXSW_TRAP_ID_IPV4_PIM = 0x58,
MLXSW_TRAP_ID_IPV4_VRRP = 0x59,
MLXSW_TRAP_ID_RPF = 0x5C,
MLXSW_TRAP_ID_IP2ME = 0x5F,
MLXSW_TRAP_ID_IPV6_UNSPECIFIED_ADDRESS = 0x60,
MLXSW_TRAP_ID_IPV6_LINK_LOCAL_DEST = 0x61,
MLXSW_TRAP_ID_IPV6_LINK_LOCAL_SRC = 0x62,
MLXSW_TRAP_ID_IPV6_ALL_NODES_LINK = 0x63,
MLXSW_TRAP_ID_IPV6_OSPF = 0x64,
MLXSW_TRAP_ID_IPV6_MLDV12_LISTENER_QUERY = 0x65,
MLXSW_TRAP_ID_IPV6_MLDV1_LISTENER_REPORT = 0x66,
MLXSW_TRAP_ID_IPV6_MLDV1_LISTENER_DONE = 0x67,
MLXSW_TRAP_ID_IPV6_MLDV2_LISTENER_REPORT = 0x68,
MLXSW_TRAP_ID_IPV6_DHCP = 0x69,
MLXSW_TRAP_ID_IPV6_ALL_ROUTERS_LINK = 0x6F,
MLXSW_TRAP_ID_RTR_INGRESS0 = 0x70,
MLXSW_TRAP_ID_RTR_INGRESS1 = 0x71,
MLXSW_TRAP_ID_IPV6_PIM = 0x79,
MLXSW_TRAP_ID_IPV6_VRRP = 0x7A,
MLXSW_TRAP_ID_RTR_EGRESS0 = 0x80,
MLXSW_TRAP_ID_IPV4_BGP = 0x88,
MLXSW_TRAP_ID_IPV6_BGP = 0x89,
MLXSW_TRAP_ID_L3_IPV6_ROUTER_SOLICITATION = 0x8A,
MLXSW_TRAP_ID_L3_IPV6_ROUTER_ADVERTISEMENT = 0x8B,
MLXSW_TRAP_ID_L3_IPV6_NEIGHBOR_SOLICITATION = 0x8C,
MLXSW_TRAP_ID_L3_IPV6_NEIGHBOR_ADVERTISEMENT = 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,
MLXSW_TRAP_ID_IPIP_DECAP_ERROR = 0xB1,
MLXSW_TRAP_ID_NVE_DECAP_ARP = 0xB8,
MLXSW_TRAP_ID_NVE_ENCAP_ARP = 0xBD,
MLXSW_TRAP_ID_IPV4_BFD = 0xD0,
MLXSW_TRAP_ID_IPV6_BFD = 0xD1,
MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7,
MLXSW_TRAP_ID_ROUTER_ARPBC = 0xE0,
MLXSW_TRAP_ID_ROUTER_ARPUC = 0xE1,
MLXSW_TRAP_ID_DISCARD_NON_ROUTABLE = 0x11A,
MLXSW_TRAP_ID_DISCARD_ROUTER2 = 0x130,
MLXSW_TRAP_ID_DISCARD_ROUTER3 = 0x131,
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,
MLXSW_TRAP_ID_DISCARD_ING_SWITCH_STP = 0x14A,
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_CLASS_E = 0x164,
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_MC_DMAC = 0x168,
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_IRIF_EN = 0x178,
MLXSW_TRAP_ID_DISCARD_ROUTER_ERIF_EN = 0x179,
MLXSW_TRAP_ID_DISCARD_ROUTER_LPM4 = 0x17B,
MLXSW_TRAP_ID_DISCARD_ROUTER_LPM6 = 0x17C,
MLXSW_TRAP_ID_DISCARD_DEC_PKT = 0x188,
MLXSW_TRAP_ID_DISCARD_OVERLAY_SMAC_MC = 0x190,
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,
/* Multicast trap used for routes with trap-and-forward action */
MLXSW_TRAP_ID_ACL2 = 0x1C2,
MLXSW_TRAP_ID_DISCARD_INGRESS_ACL = 0x1C3,
MLXSW_TRAP_ID_DISCARD_EGRESS_ACL = 0x1C4,
MLXSW_TRAP_ID_MIRROR_SESSION0 = 0x220,
MLXSW_TRAP_ID_MIRROR_SESSION1 = 0x221,
MLXSW_TRAP_ID_MIRROR_SESSION2 = 0x222,
MLXSW_TRAP_ID_MIRROR_SESSION3 = 0x223,
MLXSW_TRAP_ID_MIRROR_SESSION4 = 0x224,
MLXSW_TRAP_ID_MIRROR_SESSION5 = 0x225,
MLXSW_TRAP_ID_MIRROR_SESSION6 = 0x226,
MLXSW_TRAP_ID_MIRROR_SESSION7 = 0x227,
MLXSW_TRAP_ID_MAX = 0x3FF,
};
enum mlxsw_event_trap_id {
/* Fatal Event generated by FW */
MLXSW_TRAP_ID_MFDE = 0x3,
/* Port Up/Down event generated by hardware */
MLXSW_TRAP_ID_PUDE = 0x8,
/* Port Module Plug/Unplug Event generated by hardware */
MLXSW_TRAP_ID_PMPE = 0x9,
/* Temperature Warning event generated by hardware */
MLXSW_TRAP_ID_MTWE = 0xC,
/* PTP Ingress FIFO has a new entry */
MLXSW_TRAP_ID_PTP_ING_FIFO = 0x2D,
/* PTP Egress FIFO has a new entry */
MLXSW_TRAP_ID_PTP_EGR_FIFO = 0x2E,
/* Downstream Device Status Change */
MLXSW_TRAP_ID_DSDSC = 0x321,
/* Binary Code Transfer Operation Executed Event */
MLXSW_TRAP_ID_BCTOE = 0x322,
/* Port mapping change */
MLXSW_TRAP_ID_PMLPE = 0x32E,
};
#endif /* _MLXSW_TRAP_H */