mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-02-14 05:34:49 -05:00
9e2103f361
Populate nested lease info to the queue-get response that returns the
ifindex, queue id with type and optionally netns id if the device
resides in a different netns.
Example with ynl client:
# ip a
[...]
4: enp10s0f0np0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 xdp/id:24 qdisc mq state UP group default qlen 1000
link/ether e8:eb:d3:a3:43:f6 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.2/24 scope global enp10s0f0np0
valid_lft forever preferred_lft forever
inet6 fe80::eaeb:d3ff:fea3:43f6/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
[...]
# ethtool -i enp10s0f0np0
driver: mlx5_core
[...]
# ./pyynl/cli.py \
--spec ~/netlink/specs/netdev.yaml \
--do queue-get \
--json '{"ifindex": 4, "id": 15, "type": "rx"}'
{'id': 15,
'ifindex': 4,
'lease': {'ifindex': 8, 'netns-id': 0, 'queue': {'id': 1, 'type': 'rx'}},
'napi-id': 8227,
'type': 'rx',
'xsk': {}}
# ip netns list
foo (id: 0)
# ip netns exec foo ip a
[...]
8: nk@NONE: <BROADCAST,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
inet6 fe80::200:ff:fe00:0/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
[...]
# ip netns exec foo ethtool -i nk
driver: netkit
[...]
# ip netns exec foo ls /sys/class/net/nk/queues/
rx-0 rx-1 tx-0
# ip netns exec foo ./pyynl/cli.py \
--spec ~/netlink/specs/netdev.yaml \
--do queue-get \
--json '{"ifindex": 8, "id": 1, "type": "rx"}'
{'id': 1, 'ifindex': 8, 'type': 'rx'}
Note that the caller of netdev_nl_queue_fill_one() holds the netdevice
lock. For the queue-get we do not lock both devices. When queues get
{un,}leased, both devices are locked, thus if __netif_get_rx_queue_peer()
returns true, the peer pointer points to a valid device. The netns-id
is fetched via peernet2id_alloc() similarly as done in OVS.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Co-developed-by: David Wei <dw@davidwei.uk>
Signed-off-by: David Wei <dw@davidwei.uk>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20260115082603.219152-4-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_NETDEV_RX_QUEUE_H
|
|
#define _LINUX_NETDEV_RX_QUEUE_H
|
|
|
|
#include <linux/kobject.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/sysfs.h>
|
|
#include <net/xdp.h>
|
|
#include <net/page_pool/types.h>
|
|
|
|
/* This structure contains an instance of an RX queue. */
|
|
struct netdev_rx_queue {
|
|
struct xdp_rxq_info xdp_rxq;
|
|
#ifdef CONFIG_RPS
|
|
struct rps_map __rcu *rps_map;
|
|
struct rps_dev_flow_table __rcu *rps_flow_table;
|
|
#endif
|
|
struct kobject kobj;
|
|
const struct attribute_group **groups;
|
|
struct net_device *dev;
|
|
netdevice_tracker dev_tracker;
|
|
|
|
/* All fields below are "ops protected",
|
|
* see comment about net_device::lock
|
|
*/
|
|
#ifdef CONFIG_XDP_SOCKETS
|
|
struct xsk_buff_pool *pool;
|
|
#endif
|
|
struct napi_struct *napi;
|
|
struct pp_memory_provider_params mp_params;
|
|
struct netdev_rx_queue *lease;
|
|
netdevice_tracker lease_tracker;
|
|
} ____cacheline_aligned_in_smp;
|
|
|
|
/*
|
|
* RX queue sysfs structures and functions.
|
|
*/
|
|
struct rx_queue_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct netdev_rx_queue *queue, char *buf);
|
|
ssize_t (*store)(struct netdev_rx_queue *queue,
|
|
const char *buf, size_t len);
|
|
};
|
|
|
|
static inline struct netdev_rx_queue *
|
|
__netif_get_rx_queue(struct net_device *dev, unsigned int rxq)
|
|
{
|
|
return dev->_rx + rxq;
|
|
}
|
|
|
|
static inline unsigned int
|
|
get_netdev_rx_queue_index(struct netdev_rx_queue *queue)
|
|
{
|
|
struct net_device *dev = queue->dev;
|
|
int index = queue - dev->_rx;
|
|
|
|
BUG_ON(index >= dev->num_rx_queues);
|
|
return index;
|
|
}
|
|
|
|
int netdev_rx_queue_restart(struct net_device *dev, unsigned int rxq);
|
|
void netdev_rx_queue_lease(struct netdev_rx_queue *rxq_dst,
|
|
struct netdev_rx_queue *rxq_src);
|
|
void netdev_rx_queue_unlease(struct netdev_rx_queue *rxq_dst,
|
|
struct netdev_rx_queue *rxq_src);
|
|
bool netif_rx_queue_lease_get_owner(struct net_device **dev, unsigned int *rxq);
|
|
|
|
enum netif_lease_dir {
|
|
NETIF_VIRT_TO_PHYS,
|
|
NETIF_PHYS_TO_VIRT,
|
|
};
|
|
|
|
struct netdev_rx_queue *
|
|
__netif_get_rx_queue_lease(struct net_device **dev, unsigned int *rxq,
|
|
enum netif_lease_dir dir);
|
|
#endif /* _LINUX_NETDEV_RX_QUEUE_H */
|