devlink: Add layer 3 generic packet traps
Add packet traps that can report packets that were dropped during layer 3 forwarding. 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>
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Amit Cohen
David S. Miller
parent
c55b810abb
commit
6896cc4d8f
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@ -162,6 +162,47 @@ be added to the following table:
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- ``drop``
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- Traps packets that the device decided to drop because they could not be
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enqueued to a transmission queue which is full
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* - ``non_ip``
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- ``drop``
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- Traps packets that the device decided to drop because they need to
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undergo a layer 3 lookup, but are not IP or MPLS packets
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* - ``uc_dip_over_mc_dmac``
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- ``drop``
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- Traps packets that the device decided to drop because they need to be
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routed and they have a unicast destination IP and a multicast destination
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MAC
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* - ``dip_is_loopback_address``
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- ``drop``
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- Traps packets that the device decided to drop because they need to be
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routed and their destination IP is the loopback address (i.e., 127.0.0.0/8
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and ::1/128)
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* - ``sip_is_mc``
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- ``drop``
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- Traps packets that the device decided to drop because they need to be
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routed and their source IP is multicast (i.e., 224.0.0.0/8 and ff::/8)
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* - ``sip_is_loopback_address``
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- ``drop``
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- Traps packets that the device decided to drop because they need to be
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routed and their source IP is the loopback address (i.e., 127.0.0.0/8 and ::1/128)
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* - ``ip_header_corrupted``
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- ``drop``
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- Traps packets that the device decided to drop because they need to be
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routed and their IP header is corrupted: wrong checksum, wrong IP version
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or too short Internet Header Length (IHL)
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* - ``ipv4_sip_is_limited_bc``
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- ``drop``
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- Traps packets that the device decided to drop because they need to be
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routed and their source IP is limited broadcast (i.e., 255.255.255.255/32)
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* - ``ipv6_mc_dip_reserved_scope``
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- ``drop``
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- Traps IPv6 packets that the device decided to drop because they need to
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be routed and their IPv6 multicast destination IP has a reserved scope
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(i.e., ffx0::/16)
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* - ``ipv6_mc_dip_interface_local_scope``
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- ``drop``
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- Traps IPv6 packets that the device decided to drop because they need to
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be routed and their IPv6 multicast destination IP has an interface-local scope
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(i.e., ffx1::/16)
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Driver-specific Packet Traps
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============================
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@ -569,6 +569,15 @@ enum devlink_trap_generic_id {
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DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
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DEVLINK_TRAP_GENERIC_ID_TTL_ERROR,
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DEVLINK_TRAP_GENERIC_ID_TAIL_DROP,
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DEVLINK_TRAP_GENERIC_ID_NON_IP_PACKET,
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DEVLINK_TRAP_GENERIC_ID_UC_DIP_MC_DMAC,
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DEVLINK_TRAP_GENERIC_ID_DIP_LB,
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DEVLINK_TRAP_GENERIC_ID_SIP_MC,
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DEVLINK_TRAP_GENERIC_ID_SIP_LB,
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DEVLINK_TRAP_GENERIC_ID_CORRUPTED_IP_HDR,
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DEVLINK_TRAP_GENERIC_ID_IPV4_SIP_BC,
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DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_RESERVED_SCOPE,
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DEVLINK_TRAP_GENERIC_ID_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE,
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/* Add new generic trap IDs above */
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__DEVLINK_TRAP_GENERIC_ID_MAX,
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@ -607,6 +616,24 @@ enum devlink_trap_group_generic_id {
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"ttl_value_is_too_small"
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#define DEVLINK_TRAP_GENERIC_NAME_TAIL_DROP \
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"tail_drop"
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#define DEVLINK_TRAP_GENERIC_NAME_NON_IP_PACKET \
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"non_ip"
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#define DEVLINK_TRAP_GENERIC_NAME_UC_DIP_MC_DMAC \
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"uc_dip_over_mc_dmac"
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#define DEVLINK_TRAP_GENERIC_NAME_DIP_LB \
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"dip_is_loopback_address"
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#define DEVLINK_TRAP_GENERIC_NAME_SIP_MC \
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"sip_is_mc"
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#define DEVLINK_TRAP_GENERIC_NAME_SIP_LB \
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"sip_is_loopback_address"
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#define DEVLINK_TRAP_GENERIC_NAME_CORRUPTED_IP_HDR \
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"ip_header_corrupted"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_SIP_BC \
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"ipv4_sip_is_limited_bc"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_RESERVED_SCOPE \
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"ipv6_mc_dip_reserved_scope"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE \
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"ipv6_mc_dip_interface_local_scope"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
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"l2_drops"
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@ -7602,6 +7602,15 @@ static const struct devlink_trap devlink_trap_generic[] = {
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DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
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DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
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DEVLINK_TRAP(TAIL_DROP, DROP),
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DEVLINK_TRAP(NON_IP_PACKET, DROP),
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DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
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DEVLINK_TRAP(DIP_LB, DROP),
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DEVLINK_TRAP(SIP_MC, DROP),
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DEVLINK_TRAP(SIP_LB, DROP),
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DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
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DEVLINK_TRAP(IPV4_SIP_BC, DROP),
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DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
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DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
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};
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#define DEVLINK_TRAP_GROUP(_id) \
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