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devlink: Add layer 3 control packet traps
Add layer 3 control packet traps such as ARP and DHCP, so that capable device drivers could register them with devlink. Add documentation for every added packet trap and packet trap group. 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
David S. Miller
parent
515eac677f
commit
d77cfd162a
@ -288,6 +288,115 @@ be added to the following table:
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* - ``mld_v1_done``
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- ``control``
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- Traps MLD Version 1 Multicast Listener Done packets
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* - ``ipv4_dhcp``
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- ``control``
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- Traps IPv4 DHCP packets
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* - ``ipv6_dhcp``
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- ``control``
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- Traps IPv6 DHCP packets
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* - ``arp_request``
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- ``control``
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- Traps ARP request packets
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* - ``arp_response``
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- ``control``
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- Traps ARP response packets
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* - ``arp_overlay``
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- ``control``
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- Traps NVE-decapsulated ARP packets that reached the overlay network.
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This is required, for example, when the address that needs to be
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resolved is a local address
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* - ``ipv6_neigh_solicit``
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- ``control``
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- Traps IPv6 Neighbour Solicitation packets
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* - ``ipv6_neigh_advert``
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- ``control``
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- Traps IPv6 Neighbour Advertisement packets
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* - ``ipv4_bfd``
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- ``control``
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- Traps IPv4 BFD packets
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* - ``ipv6_bfd``
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- ``control``
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- Traps IPv6 BFD packets
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* - ``ipv4_ospf``
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- ``control``
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- Traps IPv4 OSPF packets
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* - ``ipv6_ospf``
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- ``control``
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- Traps IPv6 OSPF packets
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* - ``ipv4_bgp``
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- ``control``
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- Traps IPv4 BGP packets
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* - ``ipv6_bgp``
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- ``control``
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- Traps IPv6 BGP packets
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* - ``ipv4_vrrp``
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- ``control``
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- Traps IPv4 VRRP packets
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* - ``ipv6_vrrp``
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- ``control``
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- Traps IPv6 VRRP packets
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* - ``ipv4_pim``
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- ``control``
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- Traps IPv4 PIM packets
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* - ``ipv6_pim``
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- ``control``
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- Traps IPv6 PIM packets
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* - ``uc_loopback``
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- ``control``
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- Traps unicast packets that need to be routed through the same layer 3
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interface from which they were received. Such packets are routed by the
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kernel, but also cause it to potentially generate ICMP redirect packets
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* - ``local_route``
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- ``control``
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- Traps unicast packets that hit a local route and need to be locally
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delivered
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* - ``external_route``
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- ``control``
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- Traps packets that should be routed through an external interface (e.g.,
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management interface) that does not belong to the same device (e.g.,
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switch ASIC) as the ingress interface
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* - ``ipv6_uc_dip_link_local_scope``
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- ``control``
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- Traps unicast IPv6 packets that need to be routed and have a destination
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IP address with a link-local scope (i.e., fe80::/10). The trap allows
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device drivers to avoid programming link-local routes, but still receive
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packets for local delivery
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* - ``ipv6_dip_all_nodes``
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- ``control``
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- Traps IPv6 packets that their destination IP address is the "All Nodes
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Address" (i.e., ff02::1)
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* - ``ipv6_dip_all_routers``
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- ``control``
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- Traps IPv6 packets that their destination IP address is the "All Routers
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Address" (i.e., ff02::2)
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* - ``ipv6_router_solicit``
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- ``control``
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- Traps IPv6 Router Solicitation packets
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* - ``ipv6_router_advert``
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- ``control``
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- Traps IPv6 Router Advertisement packets
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* - ``ipv6_redirect``
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- ``control``
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- Traps IPv6 Redirect Message packets
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* - ``ipv4_router_alert``
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- ``control``
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- Traps IPv4 packets that need to be routed and include the Router Alert
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option. Such packets need to be locally delivered to raw sockets that
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have the IP_ROUTER_ALERT socket option set
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* - ``ipv6_router_alert``
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- ``control``
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- Traps IPv6 packets that need to be routed and include the Router Alert
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option in their Hop-by-Hop extension header. Such packets need to be
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locally delivered to raw sockets that have the IPV6_ROUTER_ALERT socket
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option set
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* - ``ptp_event``
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- ``control``
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- Traps PTP time-critical event messages (Sync, Delay_req, Pdelay_Req and
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Pdelay_Resp)
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* - ``ptp_general``
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- ``control``
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- Traps PTP general messages (Announce, Follow_Up, Delay_Resp,
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Pdelay_Resp_Follow_Up, management and signaling)
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Driver-specific Packet Traps
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============================
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@ -344,6 +453,40 @@ narrow. The description of these groups must be added to the following table:
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* - ``mc_snooping``
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- Contains packet traps for IGMP and MLD packets required for multicast
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snooping
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* - ``dhcp``
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- Contains packet traps for DHCP packets
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* - ``neigh_discovery``
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- Contains packet traps for neighbour discovery packets (e.g., ARP, IPv6
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ND)
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* - ``bfd``
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- Contains packet traps for BFD packets
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* - ``ospf``
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- Contains packet traps for OSPF packets
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* - ``bgp``
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- Contains packet traps for BGP packets
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* - ``vrrp``
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- Contains packet traps for VRRP packets
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* - ``pim``
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- Contains packet traps for PIM packets
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* - ``uc_loopback``
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- Contains a packet trap for unicast loopback packets (i.e.,
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``uc_loopback``). This trap is singled-out because in cases such as
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one-armed router it will be constantly triggered. To limit the impact on
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the CPU usage, a packet trap policer with a low rate can be bound to the
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group without affecting other traps
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* - ``local_delivery``
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- Contains packet traps for packets that should be locally delivered after
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routing, but do not match more specific packet traps (e.g.,
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``ipv4_bgp``)
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* - ``ipv6``
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- Contains packet traps for various IPv6 control packets (e.g., Router
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Advertisements)
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* - ``ptp_event``
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- Contains packet traps for PTP time-critical event messages (Sync,
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Delay_req, Pdelay_Req and Pdelay_Resp)
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* - ``ptp_general``
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- Contains packet traps for PTP general messages (Announce, Follow_Up,
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Delay_Resp, Pdelay_Resp_Follow_Up, management and signaling)
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Packet Trap Policers
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====================
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@ -657,6 +657,36 @@ enum devlink_trap_generic_id {
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DEVLINK_TRAP_GENERIC_ID_MLD_V1_REPORT,
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DEVLINK_TRAP_GENERIC_ID_MLD_V2_REPORT,
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DEVLINK_TRAP_GENERIC_ID_MLD_V1_DONE,
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DEVLINK_TRAP_GENERIC_ID_IPV4_DHCP,
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DEVLINK_TRAP_GENERIC_ID_IPV6_DHCP,
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DEVLINK_TRAP_GENERIC_ID_ARP_REQUEST,
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DEVLINK_TRAP_GENERIC_ID_ARP_RESPONSE,
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DEVLINK_TRAP_GENERIC_ID_ARP_OVERLAY,
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DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_SOLICIT,
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DEVLINK_TRAP_GENERIC_ID_IPV6_NEIGH_ADVERT,
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DEVLINK_TRAP_GENERIC_ID_IPV4_BFD,
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DEVLINK_TRAP_GENERIC_ID_IPV6_BFD,
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DEVLINK_TRAP_GENERIC_ID_IPV4_OSPF,
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DEVLINK_TRAP_GENERIC_ID_IPV6_OSPF,
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DEVLINK_TRAP_GENERIC_ID_IPV4_BGP,
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DEVLINK_TRAP_GENERIC_ID_IPV6_BGP,
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DEVLINK_TRAP_GENERIC_ID_IPV4_VRRP,
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DEVLINK_TRAP_GENERIC_ID_IPV6_VRRP,
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DEVLINK_TRAP_GENERIC_ID_IPV4_PIM,
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DEVLINK_TRAP_GENERIC_ID_IPV6_PIM,
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DEVLINK_TRAP_GENERIC_ID_UC_LB,
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DEVLINK_TRAP_GENERIC_ID_LOCAL_ROUTE,
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DEVLINK_TRAP_GENERIC_ID_EXTERNAL_ROUTE,
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DEVLINK_TRAP_GENERIC_ID_IPV6_UC_DIP_LINK_LOCAL_SCOPE,
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DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_NODES,
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DEVLINK_TRAP_GENERIC_ID_IPV6_DIP_ALL_ROUTERS,
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DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_SOLICIT,
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DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ADVERT,
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DEVLINK_TRAP_GENERIC_ID_IPV6_REDIRECT,
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DEVLINK_TRAP_GENERIC_ID_IPV4_ROUTER_ALERT,
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DEVLINK_TRAP_GENERIC_ID_IPV6_ROUTER_ALERT,
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DEVLINK_TRAP_GENERIC_ID_PTP_EVENT,
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DEVLINK_TRAP_GENERIC_ID_PTP_GENERAL,
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/* Add new generic trap IDs above */
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__DEVLINK_TRAP_GENERIC_ID_MAX,
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@ -677,6 +707,18 @@ enum devlink_trap_group_generic_id {
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DEVLINK_TRAP_GROUP_GENERIC_ID_LACP,
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DEVLINK_TRAP_GROUP_GENERIC_ID_LLDP,
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DEVLINK_TRAP_GROUP_GENERIC_ID_MC_SNOOPING,
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DEVLINK_TRAP_GROUP_GENERIC_ID_DHCP,
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DEVLINK_TRAP_GROUP_GENERIC_ID_NEIGH_DISCOVERY,
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DEVLINK_TRAP_GROUP_GENERIC_ID_BFD,
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DEVLINK_TRAP_GROUP_GENERIC_ID_OSPF,
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DEVLINK_TRAP_GROUP_GENERIC_ID_BGP,
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DEVLINK_TRAP_GROUP_GENERIC_ID_VRRP,
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DEVLINK_TRAP_GROUP_GENERIC_ID_PIM,
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DEVLINK_TRAP_GROUP_GENERIC_ID_UC_LB,
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DEVLINK_TRAP_GROUP_GENERIC_ID_LOCAL_DELIVERY,
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DEVLINK_TRAP_GROUP_GENERIC_ID_IPV6,
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DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_EVENT,
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DEVLINK_TRAP_GROUP_GENERIC_ID_PTP_GENERAL,
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/* Add new generic trap group IDs above */
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__DEVLINK_TRAP_GROUP_GENERIC_ID_MAX,
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@ -766,6 +808,66 @@ enum devlink_trap_group_generic_id {
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"mld_v2_report"
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#define DEVLINK_TRAP_GENERIC_NAME_MLD_V1_DONE \
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"mld_v1_done"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_DHCP \
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"ipv4_dhcp"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_DHCP \
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"ipv6_dhcp"
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#define DEVLINK_TRAP_GENERIC_NAME_ARP_REQUEST \
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"arp_request"
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#define DEVLINK_TRAP_GENERIC_NAME_ARP_RESPONSE \
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"arp_response"
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#define DEVLINK_TRAP_GENERIC_NAME_ARP_OVERLAY \
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"arp_overlay"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_SOLICIT \
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"ipv6_neigh_solicit"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_NEIGH_ADVERT \
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"ipv6_neigh_advert"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_BFD \
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"ipv4_bfd"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_BFD \
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"ipv6_bfd"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_OSPF \
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"ipv4_ospf"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_OSPF \
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"ipv6_ospf"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_BGP \
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"ipv4_bgp"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_BGP \
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"ipv6_bgp"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_VRRP \
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"ipv4_vrrp"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_VRRP \
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"ipv6_vrrp"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_PIM \
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"ipv4_pim"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_PIM \
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"ipv6_pim"
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#define DEVLINK_TRAP_GENERIC_NAME_UC_LB \
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"uc_loopback"
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#define DEVLINK_TRAP_GENERIC_NAME_LOCAL_ROUTE \
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"local_route"
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#define DEVLINK_TRAP_GENERIC_NAME_EXTERNAL_ROUTE \
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"external_route"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_UC_DIP_LINK_LOCAL_SCOPE \
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"ipv6_uc_dip_link_local_scope"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_NODES \
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"ipv6_dip_all_nodes"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_DIP_ALL_ROUTERS \
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"ipv6_dip_all_routers"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_SOLICIT \
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"ipv6_router_solicit"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ADVERT \
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"ipv6_router_advert"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_REDIRECT \
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"ipv6_redirect"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV4_ROUTER_ALERT \
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"ipv4_router_alert"
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#define DEVLINK_TRAP_GENERIC_NAME_IPV6_ROUTER_ALERT \
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"ipv6_router_alert"
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#define DEVLINK_TRAP_GENERIC_NAME_PTP_EVENT \
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"ptp_event"
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#define DEVLINK_TRAP_GENERIC_NAME_PTP_GENERAL \
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"ptp_general"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
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"l2_drops"
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@ -787,6 +889,30 @@ enum devlink_trap_group_generic_id {
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"lldp"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_MC_SNOOPING \
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"mc_snooping"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_DHCP \
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"dhcp"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_NEIGH_DISCOVERY \
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"neigh_discovery"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_BFD \
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"bfd"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_OSPF \
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"ospf"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_BGP \
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"bgp"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_VRRP \
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"vrrp"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_PIM \
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"pim"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_UC_LB \
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"uc_loopback"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_LOCAL_DELIVERY \
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"local_delivery"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_IPV6 \
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"ipv6"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_EVENT \
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"ptp_event"
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#define DEVLINK_TRAP_GROUP_GENERIC_NAME_PTP_GENERAL \
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"ptp_general"
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#define DEVLINK_TRAP_GENERIC(_type, _init_action, _id, _group_id, \
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_metadata_cap) \
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@ -8507,6 +8507,36 @@ static const struct devlink_trap devlink_trap_generic[] = {
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DEVLINK_TRAP(MLD_V1_REPORT, CONTROL),
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DEVLINK_TRAP(MLD_V2_REPORT, CONTROL),
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DEVLINK_TRAP(MLD_V1_DONE, CONTROL),
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DEVLINK_TRAP(IPV4_DHCP, CONTROL),
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DEVLINK_TRAP(IPV6_DHCP, CONTROL),
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DEVLINK_TRAP(ARP_REQUEST, CONTROL),
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DEVLINK_TRAP(ARP_RESPONSE, CONTROL),
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DEVLINK_TRAP(ARP_OVERLAY, CONTROL),
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DEVLINK_TRAP(IPV6_NEIGH_SOLICIT, CONTROL),
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DEVLINK_TRAP(IPV6_NEIGH_ADVERT, CONTROL),
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DEVLINK_TRAP(IPV4_BFD, CONTROL),
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DEVLINK_TRAP(IPV6_BFD, CONTROL),
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DEVLINK_TRAP(IPV4_OSPF, CONTROL),
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DEVLINK_TRAP(IPV6_OSPF, CONTROL),
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DEVLINK_TRAP(IPV4_BGP, CONTROL),
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DEVLINK_TRAP(IPV6_BGP, CONTROL),
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DEVLINK_TRAP(IPV4_VRRP, CONTROL),
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DEVLINK_TRAP(IPV6_VRRP, CONTROL),
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DEVLINK_TRAP(IPV4_PIM, CONTROL),
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DEVLINK_TRAP(IPV6_PIM, CONTROL),
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DEVLINK_TRAP(UC_LB, CONTROL),
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DEVLINK_TRAP(LOCAL_ROUTE, CONTROL),
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DEVLINK_TRAP(EXTERNAL_ROUTE, CONTROL),
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DEVLINK_TRAP(IPV6_UC_DIP_LINK_LOCAL_SCOPE, CONTROL),
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DEVLINK_TRAP(IPV6_DIP_ALL_NODES, CONTROL),
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DEVLINK_TRAP(IPV6_DIP_ALL_ROUTERS, CONTROL),
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DEVLINK_TRAP(IPV6_ROUTER_SOLICIT, CONTROL),
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DEVLINK_TRAP(IPV6_ROUTER_ADVERT, CONTROL),
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DEVLINK_TRAP(IPV6_REDIRECT, CONTROL),
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DEVLINK_TRAP(IPV4_ROUTER_ALERT, CONTROL),
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DEVLINK_TRAP(IPV6_ROUTER_ALERT, CONTROL),
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DEVLINK_TRAP(PTP_EVENT, CONTROL),
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DEVLINK_TRAP(PTP_GENERAL, CONTROL),
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};
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#define DEVLINK_TRAP_GROUP(_id) \
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@ -8526,6 +8556,18 @@ static const struct devlink_trap_group devlink_trap_group_generic[] = {
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DEVLINK_TRAP_GROUP(LACP),
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DEVLINK_TRAP_GROUP(LLDP),
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DEVLINK_TRAP_GROUP(MC_SNOOPING),
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DEVLINK_TRAP_GROUP(DHCP),
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DEVLINK_TRAP_GROUP(NEIGH_DISCOVERY),
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DEVLINK_TRAP_GROUP(BFD),
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DEVLINK_TRAP_GROUP(OSPF),
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DEVLINK_TRAP_GROUP(BGP),
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DEVLINK_TRAP_GROUP(VRRP),
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DEVLINK_TRAP_GROUP(PIM),
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DEVLINK_TRAP_GROUP(UC_LB),
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DEVLINK_TRAP_GROUP(LOCAL_DELIVERY),
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DEVLINK_TRAP_GROUP(IPV6),
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DEVLINK_TRAP_GROUP(PTP_EVENT),
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DEVLINK_TRAP_GROUP(PTP_GENERAL),
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};
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static int devlink_trap_generic_verify(const struct devlink_trap *trap)
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