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-rw-r--r--Documentation/netlink/specs/netdev.yaml44
-rw-r--r--include/uapi/linux/netdev.h11
-rw-r--r--net/core/netdev-genl-gen.c20
-rw-r--r--net/core/netdev-genl-gen.h2
-rw-r--r--net/core/netdev-genl.c5
-rw-r--r--tools/include/uapi/linux/netdev.h11
6 files changed, 93 insertions, 0 deletions
diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
index 596c306ce52b..b86db8656eac 100644
--- a/Documentation/netlink/specs/netdev.yaml
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -339,6 +339,15 @@ attribute-sets:
doc: XSK information for this queue, if any.
type: nest
nested-attributes: xsk-info
+ -
+ name: lease
+ doc: |
+ A queue from a virtual device can have a lease which refers to
+ another queue from a physical device. This is useful for memory
+ providers and AF_XDP operations which take an ifindex and queue id
+ to allow applications to bind against virtual devices in containers.
+ type: nest
+ nested-attributes: lease
-
name: qstats
doc: |
@@ -538,6 +547,24 @@ attribute-sets:
-
name: type
-
+ name: lease
+ attributes:
+ -
+ name: ifindex
+ doc: The netdev ifindex to lease the queue from.
+ type: u32
+ checks:
+ min: 1
+ -
+ name: queue
+ doc: The netdev queue to lease from.
+ type: nest
+ nested-attributes: queue-id
+ -
+ name: netns-id
+ doc: The network namespace id of the netdev.
+ type: s32
+ -
name: dmabuf
attributes:
-
@@ -686,6 +713,7 @@ operations:
- dmabuf
- io-uring
- xsk
+ - lease
dump:
request:
attributes:
@@ -797,6 +825,22 @@ operations:
reply:
attributes:
- id
+ -
+ name: queue-create
+ doc: |
+ Create a new queue for the given netdevice. Whether this operation
+ is supported depends on the device and the driver.
+ attribute-set: queue
+ flags: [admin-perm]
+ do:
+ request:
+ attributes:
+ - ifindex
+ - type
+ - lease
+ reply: &queue-create-op
+ attributes:
+ - id
kernel-family:
headers: ["net/netdev_netlink.h"]
diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h
index e0b579a1df4f..7df1056a35fd 100644
--- a/include/uapi/linux/netdev.h
+++ b/include/uapi/linux/netdev.h
@@ -160,6 +160,7 @@ enum {
NETDEV_A_QUEUE_DMABUF,
NETDEV_A_QUEUE_IO_URING,
NETDEV_A_QUEUE_XSK,
+ NETDEV_A_QUEUE_LEASE,
__NETDEV_A_QUEUE_MAX,
NETDEV_A_QUEUE_MAX = (__NETDEV_A_QUEUE_MAX - 1)
@@ -203,6 +204,15 @@ enum {
};
enum {
+ NETDEV_A_LEASE_IFINDEX = 1,
+ NETDEV_A_LEASE_QUEUE,
+ NETDEV_A_LEASE_NETNS_ID,
+
+ __NETDEV_A_LEASE_MAX,
+ NETDEV_A_LEASE_MAX = (__NETDEV_A_LEASE_MAX - 1)
+};
+
+enum {
NETDEV_A_DMABUF_IFINDEX = 1,
NETDEV_A_DMABUF_QUEUES,
NETDEV_A_DMABUF_FD,
@@ -228,6 +238,7 @@ enum {
NETDEV_CMD_BIND_RX,
NETDEV_CMD_NAPI_SET,
NETDEV_CMD_BIND_TX,
+ NETDEV_CMD_QUEUE_CREATE,
__NETDEV_CMD_MAX,
NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1)
diff --git a/net/core/netdev-genl-gen.c b/net/core/netdev-genl-gen.c
index ba673e81716f..52ba99c019e7 100644
--- a/net/core/netdev-genl-gen.c
+++ b/net/core/netdev-genl-gen.c
@@ -28,6 +28,12 @@ static const struct netlink_range_validation netdev_a_napi_defer_hard_irqs_range
};
/* Common nested types */
+const struct nla_policy netdev_lease_nl_policy[NETDEV_A_LEASE_NETNS_ID + 1] = {
+ [NETDEV_A_LEASE_IFINDEX] = NLA_POLICY_MIN(NLA_U32, 1),
+ [NETDEV_A_LEASE_QUEUE] = NLA_POLICY_NESTED(netdev_queue_id_nl_policy),
+ [NETDEV_A_LEASE_NETNS_ID] = { .type = NLA_S32, },
+};
+
const struct nla_policy netdev_page_pool_info_nl_policy[NETDEV_A_PAGE_POOL_IFINDEX + 1] = {
[NETDEV_A_PAGE_POOL_ID] = NLA_POLICY_FULL_RANGE(NLA_UINT, &netdev_a_page_pool_id_range),
[NETDEV_A_PAGE_POOL_IFINDEX] = NLA_POLICY_FULL_RANGE(NLA_U32, &netdev_a_page_pool_ifindex_range),
@@ -107,6 +113,13 @@ static const struct nla_policy netdev_bind_tx_nl_policy[NETDEV_A_DMABUF_FD + 1]
[NETDEV_A_DMABUF_FD] = { .type = NLA_U32, },
};
+/* NETDEV_CMD_QUEUE_CREATE - do */
+static const struct nla_policy netdev_queue_create_nl_policy[NETDEV_A_QUEUE_LEASE + 1] = {
+ [NETDEV_A_QUEUE_IFINDEX] = NLA_POLICY_MIN(NLA_U32, 1),
+ [NETDEV_A_QUEUE_TYPE] = NLA_POLICY_MAX(NLA_U32, 1),
+ [NETDEV_A_QUEUE_LEASE] = NLA_POLICY_NESTED(netdev_lease_nl_policy),
+};
+
/* Ops table for netdev */
static const struct genl_split_ops netdev_nl_ops[] = {
{
@@ -205,6 +218,13 @@ static const struct genl_split_ops netdev_nl_ops[] = {
.maxattr = NETDEV_A_DMABUF_FD,
.flags = GENL_CMD_CAP_DO,
},
+ {
+ .cmd = NETDEV_CMD_QUEUE_CREATE,
+ .doit = netdev_nl_queue_create_doit,
+ .policy = netdev_queue_create_nl_policy,
+ .maxattr = NETDEV_A_QUEUE_LEASE,
+ .flags = GENL_ADMIN_PERM | GENL_CMD_CAP_DO,
+ },
};
static const struct genl_multicast_group netdev_nl_mcgrps[] = {
diff --git a/net/core/netdev-genl-gen.h b/net/core/netdev-genl-gen.h
index cffc08517a41..d71b435d72c1 100644
--- a/net/core/netdev-genl-gen.h
+++ b/net/core/netdev-genl-gen.h
@@ -14,6 +14,7 @@
#include <net/netdev_netlink.h>
/* Common nested types */
+extern const struct nla_policy netdev_lease_nl_policy[NETDEV_A_LEASE_NETNS_ID + 1];
extern const struct nla_policy netdev_page_pool_info_nl_policy[NETDEV_A_PAGE_POOL_IFINDEX + 1];
extern const struct nla_policy netdev_queue_id_nl_policy[NETDEV_A_QUEUE_TYPE + 1];
@@ -36,6 +37,7 @@ int netdev_nl_qstats_get_dumpit(struct sk_buff *skb,
int netdev_nl_bind_rx_doit(struct sk_buff *skb, struct genl_info *info);
int netdev_nl_napi_set_doit(struct sk_buff *skb, struct genl_info *info);
int netdev_nl_bind_tx_doit(struct sk_buff *skb, struct genl_info *info);
+int netdev_nl_queue_create_doit(struct sk_buff *skb, struct genl_info *info);
enum {
NETDEV_NLGRP_MGMT,
diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
index 470fabbeacd9..aae75431858d 100644
--- a/net/core/netdev-genl.c
+++ b/net/core/netdev-genl.c
@@ -1120,6 +1120,11 @@ err_genlmsg_free:
return err;
}
+int netdev_nl_queue_create_doit(struct sk_buff *skb, struct genl_info *info)
+{
+ return -EOPNOTSUPP;
+}
+
void netdev_nl_sock_priv_init(struct netdev_nl_sock *priv)
{
INIT_LIST_HEAD(&priv->bindings);
diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h
index e0b579a1df4f..7df1056a35fd 100644
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -160,6 +160,7 @@ enum {
NETDEV_A_QUEUE_DMABUF,
NETDEV_A_QUEUE_IO_URING,
NETDEV_A_QUEUE_XSK,
+ NETDEV_A_QUEUE_LEASE,
__NETDEV_A_QUEUE_MAX,
NETDEV_A_QUEUE_MAX = (__NETDEV_A_QUEUE_MAX - 1)
@@ -203,6 +204,15 @@ enum {
};
enum {
+ NETDEV_A_LEASE_IFINDEX = 1,
+ NETDEV_A_LEASE_QUEUE,
+ NETDEV_A_LEASE_NETNS_ID,
+
+ __NETDEV_A_LEASE_MAX,
+ NETDEV_A_LEASE_MAX = (__NETDEV_A_LEASE_MAX - 1)
+};
+
+enum {
NETDEV_A_DMABUF_IFINDEX = 1,
NETDEV_A_DMABUF_QUEUES,
NETDEV_A_DMABUF_FD,
@@ -228,6 +238,7 @@ enum {
NETDEV_CMD_BIND_RX,
NETDEV_CMD_NAPI_SET,
NETDEV_CMD_BIND_TX,
+ NETDEV_CMD_QUEUE_CREATE,
__NETDEV_CMD_MAX,
NETDEV_CMD_MAX = (__NETDEV_CMD_MAX - 1)
generated by cgit v1.2.3 (git 2.39.0) at 2026-05-01 07:18:13 +0300