diff options
| author | David Wei <dw@davidwei.uk> | 2026-04-03 01:10:24 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-09 18:21:46 -0700 |
| commit | 222b5566a02dbf136291376e4aa1806213fe9fa2 (patch) | |
| tree | 3762248ad9f037a9aa1261a5829b8d7e396e0230 /io_uring | |
| parent | 5602ad61ebee99c83081fba1aaf5814736edc3e7 (diff) | |
net: Proxy netdev_queue_get_dma_dev for leased queues
Extend netdev_queue_get_dma_dev to return the physical device of the
real rxq for DMA in case the queue was leased. This allows memory
providers like io_uring zero-copy or devmem to bind to the physically
leased rxq via virtual devices such as netkit.
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>
Link: https://patch.msgid.link/20260402231031.447597-8-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/zcrx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index d3ec63c83d0c..f4a7809ba0c2 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -829,7 +829,8 @@ int io_register_zcrx_ifq(struct io_ring_ctx *ctx, } netdev_hold(ifq->netdev, &ifq->netdev_tracker, GFP_KERNEL); - ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, reg.if_rxq); + ifq->dev = netdev_queue_get_dma_dev(ifq->netdev, reg.if_rxq, + NETDEV_QUEUE_TYPE_RX); if (!ifq->dev) { ret = -EOPNOTSUPP; goto netdev_put_unlock; |