[PATCH net-next 1/5] devlink: Add ecn_mark trap
From: Ido Schimmel <hidden>
Date: 2021-01-17 08:07:28
Subsystem:
devlink, documentation, networking [general], the rest · Maintainers:
Jiri Pirko, Jonathan Corbet, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Petr Machata <petrm@nvidia.com> Add the packet trap that can report packets that were ECN marked due to RED AQM. Signed-off-by: Amit Cohen <redacted> Reviewed-by: Jiri Pirko <redacted> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> --- Documentation/networking/devlink/devlink-trap.rst | 4 ++++ include/net/devlink.h | 3 +++ net/core/devlink.c | 1 + 3 files changed, 8 insertions(+)
diff --git a/Documentation/networking/devlink/devlink-trap.rst b/Documentation/networking/devlink/devlink-trap.rst
index d875f3e1e9cf..c6026b44617e 100644
--- a/Documentation/networking/devlink/devlink-trap.rst
+++ b/Documentation/networking/devlink/devlink-trap.rst@@ -480,6 +480,10 @@ be added to the following table: - ``drop`` - Traps packets that the device decided to drop in case they hit a blackhole nexthop + * - ``ecn_mark`` + - ``drop`` + - Traps ECN-capable packets that were marked with CE (Congestion + Encountered) code point by RED algorithm instead of being dropped Driver-specific Packet Traps ============================
diff --git a/include/net/devlink.h b/include/net/devlink.h
index f466819cc477..dd0c0b8fba6e 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h@@ -836,6 +836,7 @@ enum devlink_trap_generic_id { DEVLINK_TRAP_GENERIC_ID_GTP_PARSING, DEVLINK_TRAP_GENERIC_ID_ESP_PARSING, DEVLINK_TRAP_GENERIC_ID_BLACKHOLE_NEXTHOP, + DEVLINK_TRAP_GENERIC_ID_ECN_MARK, /* Add new generic trap IDs above */ __DEVLINK_TRAP_GENERIC_ID_MAX,
@@ -1061,6 +1062,8 @@ enum devlink_trap_group_generic_id { "esp_parsing" #define DEVLINK_TRAP_GENERIC_NAME_BLACKHOLE_NEXTHOP \ "blackhole_nexthop" +#define DEVLINK_TRAP_GENERIC_NAME_ECN_MARK \ + "ecn_mark" #define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \ "l2_drops"
diff --git a/net/core/devlink.c b/net/core/devlink.c
index ee828e4b1007..f86688bfad46 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c@@ -9508,6 +9508,7 @@ static const struct devlink_trap devlink_trap_generic[] = { DEVLINK_TRAP(GTP_PARSING, DROP), DEVLINK_TRAP(ESP_PARSING, DROP), DEVLINK_TRAP(BLACKHOLE_NEXTHOP, DROP), + DEVLINK_TRAP(ECN_MARK, DROP), }; #define DEVLINK_TRAP_GROUP(_id) \
--
2.29.2