devlink: Add layer 3 generic packet traps (6896cc4d) · Commits · 戴 / test

Documentation/networking/devlink-trap.rst

+41 −0

Original line number	Diff line number	Diff line
		@@ -162,6 +162,47 @@ be added to the following table:
		- ``drop``
		- Traps packets that the device decided to drop because they could not be
		enqueued to a transmission queue which is full
		* - ``non_ip``
		- ``drop``
		- Traps packets that the device decided to drop because they need to
		undergo a layer 3 lookup, but are not IP or MPLS packets
		* - ``uc_dip_over_mc_dmac``
		- ``drop``
		- Traps packets that the device decided to drop because they need to be
		routed and they have a unicast destination IP and a multicast destination
		MAC
		* - ``dip_is_loopback_address``
		- ``drop``
		- Traps packets that the device decided to drop because they need to be
		routed and their destination IP is the loopback address (i.e., 127.0.0.0/8
		and ::1/128)
		* - ``sip_is_mc``
		- ``drop``
		- Traps packets that the device decided to drop because they need to be
		routed and their source IP is multicast (i.e., 224.0.0.0/8 and ff::/8)
		* - ``sip_is_loopback_address``
		- ``drop``
		- Traps packets that the device decided to drop because they need to be
		routed and their source IP is the loopback address (i.e., 127.0.0.0/8 and ::1/128)
		* - ``ip_header_corrupted``
		- ``drop``
		- Traps packets that the device decided to drop because they need to be
		routed and their IP header is corrupted: wrong checksum, wrong IP version
		or too short Internet Header Length (IHL)
		* - ``ipv4_sip_is_limited_bc``
		- ``drop``
		- Traps packets that the device decided to drop because they need to be
		routed and their source IP is limited broadcast (i.e., 255.255.255.255/32)
		* - ``ipv6_mc_dip_reserved_scope``
		- ``drop``
		- Traps IPv6 packets that the device decided to drop because they need to
		be routed and their IPv6 multicast destination IP has a reserved scope
		(i.e., ffx0::/16)
		* - ``ipv6_mc_dip_interface_local_scope``
		- ``drop``
		- Traps IPv6 packets that the device decided to drop because they need to
		be routed and their IPv6 multicast destination IP has an interface-local scope
		(i.e., ffx1::/16)

		Driver-specific Packet Traps
		============================

include/net/devlink.h

+27 −0

Original line number	Diff line number	Diff line
		@@ -569,6 +569,15 @@ enum devlink_trap_generic_id {
		DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_ROUTE,
		DEVLINK_TRAP_GENERIC_ID_TTL_ERROR,
		DEVLINK_TRAP_GENERIC_ID_TAIL_DROP,
		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,

		/* Add new generic trap IDs above */
		__DEVLINK_TRAP_GENERIC_ID_MAX,
		@@ -607,6 +616,24 @@ enum devlink_trap_group_generic_id {
		"ttl_value_is_too_small"
		#define DEVLINK_TRAP_GENERIC_NAME_TAIL_DROP \
		"tail_drop"
		#define DEVLINK_TRAP_GENERIC_NAME_NON_IP_PACKET \
		"non_ip"
		#define DEVLINK_TRAP_GENERIC_NAME_UC_DIP_MC_DMAC \
		"uc_dip_over_mc_dmac"
		#define DEVLINK_TRAP_GENERIC_NAME_DIP_LB \
		"dip_is_loopback_address"
		#define DEVLINK_TRAP_GENERIC_NAME_SIP_MC \
		"sip_is_mc"
		#define DEVLINK_TRAP_GENERIC_NAME_SIP_LB \
		"sip_is_loopback_address"
		#define DEVLINK_TRAP_GENERIC_NAME_CORRUPTED_IP_HDR \
		"ip_header_corrupted"
		#define DEVLINK_TRAP_GENERIC_NAME_IPV4_SIP_BC \
		"ipv4_sip_is_limited_bc"
		#define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_RESERVED_SCOPE \
		"ipv6_mc_dip_reserved_scope"
		#define DEVLINK_TRAP_GENERIC_NAME_IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE \
		"ipv6_mc_dip_interface_local_scope"

		#define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
		"l2_drops"

net/core/devlink.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -7602,6 +7602,15 @@ static const struct devlink_trap devlink_trap_generic[] = {
		DEVLINK_TRAP(BLACKHOLE_ROUTE, DROP),
		DEVLINK_TRAP(TTL_ERROR, EXCEPTION),
		DEVLINK_TRAP(TAIL_DROP, DROP),
		DEVLINK_TRAP(NON_IP_PACKET, DROP),
		DEVLINK_TRAP(UC_DIP_MC_DMAC, DROP),
		DEVLINK_TRAP(DIP_LB, DROP),
		DEVLINK_TRAP(SIP_MC, DROP),
		DEVLINK_TRAP(SIP_LB, DROP),
		DEVLINK_TRAP(CORRUPTED_IP_HDR, DROP),
		DEVLINK_TRAP(IPV4_SIP_BC, DROP),
		DEVLINK_TRAP(IPV6_MC_DIP_RESERVED_SCOPE, DROP),
		DEVLINK_TRAP(IPV6_MC_DIP_INTERFACE_LOCAL_SCOPE, DROP),
		};

		#define DEVLINK_TRAP_GROUP(_id) \

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