diff options
| author | David Wei <dw@davidwei.uk> | 2026-01-15 11:25:52 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-01-20 13:58:49 +0300 |
| commit | 0caa9a8ddec3bf87bffb0eb99635068ddddce35d (patch) | |
| tree | 1ffe5823baeac52b2614265954ea80c9fd30297a /include/net/netdev_rx_queue.h | |
| parent | ff8889ff9107f01346ba0d2e580ecadfa5fac5c5 (diff) | |
| download | linux-0caa9a8ddec3bf87bffb0eb99635068ddddce35d.tar.xz | |
net: Proxy net_mp_{open,close}_rxq for leased queues
When a process in a container wants to setup a memory provider, it will
use the virtual netdev and a leased rxq, and call net_mp_{open,close}_rxq
to try and restart the queue. At this point, proxy the queue restart on
the real rxq in the physical netdev.
For memory providers (io_uring zero-copy rx and devmem), it causes the
real rxq in the physical netdev to be filled from a memory provider that
has DMA mapped memory from a process within a container.
Signed-off-by: David Wei <dw@davidwei.uk>
Co-developed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20260115082603.219152-6-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/net/netdev_rx_queue.h')
| -rw-r--r-- | include/net/netdev_rx_queue.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/net/netdev_rx_queue.h b/include/net/netdev_rx_queue.h index de04fdfdad72..508d11afaecb 100644 --- a/include/net/netdev_rx_queue.h +++ b/include/net/netdev_rx_queue.h @@ -73,4 +73,8 @@ enum netif_lease_dir { struct netdev_rx_queue * __netif_get_rx_queue_lease(struct net_device **dev, unsigned int *rxq, enum netif_lease_dir dir); +struct netdev_rx_queue * +netif_get_rx_queue_lease_locked(struct net_device **dev, unsigned int *rxq); +void netif_put_rx_queue_lease_locked(struct net_device *orig_dev, + struct net_device *dev); #endif /* _LINUX_NETDEV_RX_QUEUE_H */ |