diff options
| author | Dragos Tatulea <dtatulea@nvidia.com> | 2026-04-03 12:09:24 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-04-07 14:34:04 +0300 |
| commit | 833e72645aac10e9ca9459c4740c417e5b04faf6 (patch) | |
| tree | 996c7438ec00610a3b9c96d41c62c4102aea4e65 /drivers | |
| parent | 1047e14b44edecbbab02a86514a083b8db9fde4d (diff) | |
| download | linux-833e72645aac10e9ca9459c4740c417e5b04faf6.tar.xz | |
net/mlx5e: XDP, Improve dma address calculation of linear part for XDP_TX
When calculating the dma address of the linear part of an XDP frame, the
formula assumes that there is a single XDP buffer per page. Extend the
formula to allow multiple XDP buffers per page by calculating the data
offset in the page.
This is a preparation for the upcoming removal of a single XDP buffer
per page limitation when the formula will no longer be correct.
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260403090927.139042-3-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c index 04e1b5fa4825..d3bab198c99c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c @@ -123,7 +123,7 @@ mlx5e_xmit_xdp_buff(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq, * mode. */ - dma_addr = page_pool_get_dma_addr(page) + (xdpf->data - (void *)xdpf); + dma_addr = page_pool_get_dma_addr(page) + offset_in_page(xdpf->data); dma_sync_single_for_device(sq->pdev, dma_addr, xdptxd->len, DMA_BIDIRECTIONAL); if (xdptxd->has_frags) { |