From: Saeed Mahameed <saeed@kernel•org>
To: netdev@vger•kernel.org
Cc: stephen@networkplumber•org, dsahern@gmail•com,
Jiri Pirko <jiri@nvidia•com>, Saeed Mahameed <saeedm@nvidia•com>
Subject: [PATCH iproute2] devlink: Support DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE
Date: Thu, 6 Nov 2025 16:14:35 -0800 [thread overview]
Message-ID: <20251107001435.160260-1-saeed@kernel.org> (raw)
From: Saeed Mahameed <saeedm@nvidia•com>
Add support for the new inactive switchdev mode [1].
A user can start the eswitch in switchdev or switchdev_inactive mode.
Active: Traffic is enabled on this eswitch FDB.
Inactive: Traffic is ignored/dropped on this eswitch FDB.
An example use case:
$ devlink dev eswitch set pci/0000:08:00.1 mode switchdev_inactive
Setup FDB pipeline and netdev representors
...
Once ready to start receiving traffic
$ devlink dev eswitch set pci/0000:08:00.1 mode switchdev
[1] https://lore.kernel.org/all/20251107000831.157375-1-saeed@kernel.org/
Signed-off-by: Saeed Mahameed <saeedm@nvidia•com>
---
devlink/devlink.c | 7 ++++++-
include/uapi/linux/devlink.h | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/devlink/devlink.c b/devlink/devlink.c
index 35128083..fd9fac21 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -45,6 +45,7 @@
#define ESWITCH_MODE_LEGACY "legacy"
#define ESWITCH_MODE_SWITCHDEV "switchdev"
+#define ESWITCH_MODE_SWITCHDEV_INACTIVE "switchdev_inactive"
#define ESWITCH_INLINE_MODE_NONE "none"
#define ESWITCH_INLINE_MODE_LINK "link"
#define ESWITCH_INLINE_MODE_NETWORK "network"
@@ -1428,6 +1429,8 @@ static int eswitch_mode_get(const char *typestr,
*p_mode = DEVLINK_ESWITCH_MODE_LEGACY;
} else if (strcmp(typestr, ESWITCH_MODE_SWITCHDEV) == 0) {
*p_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV;
+ } else if (strcmp(typestr, ESWITCH_MODE_SWITCHDEV_INACTIVE) == 0) {
+ *p_mode = DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE;
} else {
pr_err("Unknown eswitch mode \"%s\"\n", typestr);
return -EINVAL;
@@ -2848,7 +2851,7 @@ static bool dl_dump_filter(struct dl *dl, struct nlattr **tb)
static void cmd_dev_help(void)
{
pr_err("Usage: devlink dev show [ DEV ]\n");
- pr_err(" devlink dev eswitch set DEV [ mode { legacy | switchdev } ]\n");
+ pr_err(" devlink dev eswitch set DEV [ mode { legacy | switchdev | switchdev_inactive } ]\n");
pr_err(" [ inline-mode { none | link | network | transport } ]\n");
pr_err(" [ encap-mode { none | basic } ]\n");
pr_err(" devlink dev eswitch show DEV\n");
@@ -3284,6 +3287,8 @@ static const char *eswitch_mode_name(uint32_t mode)
switch (mode) {
case DEVLINK_ESWITCH_MODE_LEGACY: return ESWITCH_MODE_LEGACY;
case DEVLINK_ESWITCH_MODE_SWITCHDEV: return ESWITCH_MODE_SWITCHDEV;
+ case DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE:
+ return ESWITCH_MODE_SWITCHDEV_INACTIVE;
default: return "<unknown mode>";
}
}
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index bcd5fde1..317c088b 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -181,6 +181,7 @@ enum devlink_sb_threshold_type {
enum devlink_eswitch_mode {
DEVLINK_ESWITCH_MODE_LEGACY,
DEVLINK_ESWITCH_MODE_SWITCHDEV,
+ DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE,
};
enum devlink_eswitch_inline_mode {
--
2.51.1
next reply other threads:[~2025-11-07 0:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-07 0:14 Saeed Mahameed [this message]
2025-11-12 22:46 ` [PATCH iproute2] devlink: Support DEVLINK_ESWITCH_MODE_SWITCHDEV_INACTIVE Saeed Mahameed
2025-11-12 22:53 ` David Ahern
2025-11-15 1:22 ` David Ahern
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