From: Amit Cohen <amitc@mellanox.com>
Date: Sun, 19 Jan 2020 15:00:58 +0200
Subject: devlink: Add overlay source MAC is multicast trap
Patch-mainline: v5.6-rc1
Git-commit: c3cae4916e57d2f0364d5e7769218547fb1b7c60
References: jsc#SLE-12878
Add packet trap that can report NVE packets that the device decided to
drop because their overlay source MAC is multicast.
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
Documentation/networking/devlink/devlink-trap.rst | 4 ++++
include/net/devlink.h | 3 +++
net/core/devlink.c | 1 +
3 files changed, 8 insertions(+)
--- a/Documentation/networking/devlink/devlink-trap.rst
+++ b/Documentation/networking/devlink/devlink-trap.rst
@@ -234,6 +234,10 @@ be added to the following table:
- Traps NVE and IPinIP packets that the device decided to drop because of
failure during decapsulation (e.g., packet being too short, reserved
bits set in VXLAN header)
+ * - ``overlay_smac_is_mc``
+ - ``drop``
+ - Traps NVE packets that the device decided to drop because their overlay
+ source MAC is multicast
Driver-specific Packet Traps
============================
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -593,6 +593,7 @@ enum devlink_trap_generic_id {
DEVLINK_TRAP_GENERIC_ID_IPV6_LPM_UNICAST_MISS,
DEVLINK_TRAP_GENERIC_ID_NON_ROUTABLE,
DEVLINK_TRAP_GENERIC_ID_DECAP_ERROR,
+ DEVLINK_TRAP_GENERIC_ID_OVERLAY_SMAC_MC,
/* Add new generic trap IDs above */
__DEVLINK_TRAP_GENERIC_ID_MAX,
@@ -666,6 +667,8 @@ enum devlink_trap_group_generic_id {
"non_routable_packet"
#define DEVLINK_TRAP_GENERIC_NAME_DECAP_ERROR \
"decap_error"
+#define DEVLINK_TRAP_GENERIC_NAME_OVERLAY_SMAC_MC \
+ "overlay_smac_is_mc"
#define DEVLINK_TRAP_GROUP_GENERIC_NAME_L2_DROPS \
"l2_drops"
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -7708,6 +7708,7 @@ static const struct devlink_trap devlink
DEVLINK_TRAP(IPV6_LPM_UNICAST_MISS, EXCEPTION),
DEVLINK_TRAP(NON_ROUTABLE, DROP),
DEVLINK_TRAP(DECAP_ERROR, EXCEPTION),
+ DEVLINK_TRAP(OVERLAY_SMAC_MC, DROP),
};
#define DEVLINK_TRAP_GROUP(_id) \