Commit f0a5013e authored Nov 23, 2020 by Ido Schimmel Committed by Jakub Kicinski Nov 24, 2020

devlink: Add blackhole_nexthop trap



Add a packet trap to report packets that were dropped due to a
blackhole nexthop.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

parent 1beaff77

Documentation/networking/devlink/devlink-trap.rst

+4 −0

Original line number	Diff line number	Diff line
		@@ -476,6 +476,10 @@ be added to the following table:
		* - ``esp_parsing``
		- ``drop``
		- Traps packets dropped due to an error in the ESP header parsing
		* - ``blackhole_nexthop``
		- ``drop``
		- Traps packets that the device decided to drop in case they hit a
		blackhole nexthop

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

include/net/devlink.h

+3 −1

Original line number	Diff line number	Diff line
		@@ -835,6 +835,7 @@ enum devlink_trap_generic_id {
		DEVLINK_TRAP_GENERIC_ID_DCCP_PARSING,
		DEVLINK_TRAP_GENERIC_ID_GTP_PARSING,
		DEVLINK_TRAP_GENERIC_ID_ESP_PARSING,
		DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_NEXTHOP,

		/* Add new generic trap IDs above */
		__DEVLINK_TRAP_GENERIC_ID_MAX,
		@@ -1058,7 +1059,8 @@ enum devlink_trap_group_generic_id {
		"gtp_parsing"
		#define DEVLINK_TRAP_GENERIC_NAME_ESP_PARSING \
		"esp_parsing"

		#define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_NEXTHOP \
		"blackhole_nexthop"

		#define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
		"l2_drops"

net/core/devlink.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -9490,6 +9490,7 @@ static const struct devlink_trap devlink_trap_generic[] = {
		DEVLINK_TRAP(DCCP_PARSING, DROP),
		DEVLINK_TRAP(GTP_PARSING, DROP),
		DEVLINK_TRAP(ESP_PARSING, DROP),
		DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP),
		};

		#define DEVLINK_TRAP_GROUP(_id) \