archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-08 01:04:41 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

i40e: fix registering XDP RxQ info

Browse source 
Current way of handling XDP RxQ info in i40e has a problem, where frag_size
is not updated when xsk_buff_pool is detached or when MTU is changed, this
leads to growing tail always failing for multi-buffer packets.

Couple XDP RxQ info registering with buffer allocations and unregistering
with cleaning the ring.

Fixes: a045d2f2d0 ("i40e: set xdp_rxq_info::frag_size")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://patch.msgid.link/20260305111253.2317394-6-larysa.zaremba@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Larysa Zaremba 2026-03-05 12:12:46 +01:00 • committed by Jakub Kicinski
parent e142dc4ef0
commit 8f497dc8a6
2 changed files with 22 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

34
drivers/net/ethernet/intel/i40e/i40e_main.c
View file

@ -3583,18 +3583,8 @@ static int i40e_configure_rx_ring(struct i40e_ring *ring)
if (ring->vsi->type != I40E_VSI_MAIN)
goto skip;
if (!xdp_rxq_info_is_reg(&ring->xdp_rxq)) {
err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev,
ring->queue_index,
ring->q_vector->napi.napi_id,
ring->rx_buf_len);
if (err)
return err;
}
ring->xsk_pool = i40e_xsk_pool(ring);
if (ring->xsk_pool) {
xdp_rxq_info_unreg(&ring->xdp_rxq);
ring->rx_buf_len = xsk_pool_get_rx_frame_size(ring->xsk_pool);
err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev,
ring->queue_index,
@ -3606,17 +3596,23 @@ static int i40e_configure_rx_ring(struct i40e_ring *ring)
MEM_TYPE_XSK_BUFF_POOL,
NULL);
if (err)
return err;
goto unreg_xdp;
dev_info(&vsi->back->pdev->dev,
"Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
ring->queue_index);
} else {
err = __xdp_rxq_info_reg(&ring->xdp_rxq, ring->netdev,
ring->queue_index,
ring->q_vector->napi.napi_id,
ring->rx_buf_len);
if (err)
return err;
err = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
MEM_TYPE_PAGE_SHARED,
NULL);
if (err)
return err;
goto unreg_xdp;
}
skip:
@ -3654,7 +3650,8 @@ skip:
dev_info(&vsi->back->pdev->dev,
"Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
err = -ENOMEM;
goto unreg_xdp;
}
/* set the context in the HMC */
@ -3663,7 +3660,8 @@ skip:
dev_info(&vsi->back->pdev->dev,
"Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
ring->queue_index, pf_q, err);
return -ENOMEM;
err = -ENOMEM;
goto unreg_xdp;
}
/* configure Rx buffer alignment */
@ -3671,7 +3669,8 @@ skip:
if (I40E_2K_TOO_SMALL_WITH_PADDING) {
dev_info(&vsi->back->pdev->dev,
"2k Rx buffer is too small to fit standard MTU and skb_shared_info\n");
return -EOPNOTSUPP;
err = -EOPNOTSUPP;
goto unreg_xdp;
}
clear_ring_build_skb_enabled(ring);
} else {
@ -3701,6 +3700,11 @@ skip:
}
return 0;
unreg_xdp:
if (ring->vsi->type == I40E_VSI_MAIN)
xdp_rxq_info_unreg(&ring->xdp_rxq);
return err;
}
/**

5
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View file

@ -1470,6 +1470,9 @@ void i40e_clean_rx_ring(struct i40e_ring *rx_ring)
if (!rx_ring->rx_bi)
return;
if (xdp_rxq_info_is_reg(&rx_ring->xdp_rxq))
xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
if (rx_ring->xsk_pool) {
i40e_xsk_clean_rx_ring(rx_ring);
goto skip_free;
@ -1527,8 +1530,6 @@ skip_free:
void i40e_free_rx_resources(struct i40e_ring *rx_ring)
{
i40e_clean_rx_ring(rx_ring);
if (rx_ring->vsi->type == I40E_VSI_MAIN)
xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
rx_ring->xdp_prog = NULL;
kfree(rx_ring->rx_bi);
rx_ring->rx_bi = NULL;