[PATCH net-next v4 06/13] devlink: support index-based notification filtering
From: Jiri Pirko <jiri@resnulli.us>
Date: 2026-03-12 10:04:18
Also in:
linux-rdma, linux-trace-kernel, netdev
Subsystem:
devlink, networking [general], the rest · Maintainers:
Jiri Pirko, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Jiri Pirko <redacted> Extend the notification filter descriptor with devlink_index so that userspace can filter notifications by devlink instance index in addition to bus_name/dev_name. Signed-off-by: Jiri Pirko <redacted> --- v2->v3: - new patch --- net/devlink/devl_internal.h | 4 ++++ net/devlink/netlink.c | 11 ++++++++++- 2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index 395832ed4477..f0ebfb936770 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h@@ -205,6 +205,8 @@ struct devlink_obj_desc { const char *dev_name; unsigned int port_index; bool port_index_valid; + unsigned int devlink_index; + bool devlink_index_valid; long data[]; };
@@ -214,6 +216,8 @@ static inline void devlink_nl_obj_desc_init(struct devlink_obj_desc *desc, memset(desc, 0, sizeof(*desc)); desc->bus_name = devlink_bus_name(devlink); desc->dev_name = devlink_dev_name(devlink); + desc->devlink_index = devlink->index; + desc->devlink_index_valid = true; } static inline void devlink_nl_obj_desc_port_set(struct devlink_obj_desc *desc,
diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c
index fa38fca22fe4..32ddbe244cb7 100644
--- a/net/devlink/netlink.c
+++ b/net/devlink/netlink.c@@ -73,13 +73,19 @@ int devlink_nl_notify_filter_set_doit(struct sk_buff *skb, flt->dev_name = pos; } + if (attrs[DEVLINK_ATTR_INDEX]) { + flt->devlink_index = nla_get_uint(attrs[DEVLINK_ATTR_INDEX]); + flt->devlink_index_valid = true; + } + if (attrs[DEVLINK_ATTR_PORT_INDEX]) { flt->port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]); flt->port_index_valid = true; } /* Don't attach empty filter. */ - if (!flt->bus_name && !flt->dev_name && !flt->port_index_valid) { + if (!flt->bus_name && !flt->dev_name && + !flt->devlink_index_valid && !flt->port_index_valid) { kfree(flt); flt = NULL; }
@@ -100,6 +106,9 @@ int devlink_nl_notify_filter_set_doit(struct sk_buff *skb, static bool devlink_obj_desc_match(const struct devlink_obj_desc *desc, const struct devlink_obj_desc *flt) { + if (desc->devlink_index_valid && flt->devlink_index_valid && + desc->devlink_index != flt->devlink_index) + return false; if (desc->bus_name && flt->bus_name && strcmp(desc->bus_name, flt->bus_name)) return false;
--
2.51.1