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i40e: set xdp_rxq_info::frag_size

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[ Upstream commit a045d2f2d0 ]

i40e support XDP multi-buffer so it is supposed to use
__xdp_rxq_info_reg() instead of xdp_rxq_info_reg() and set the
frag_size. It can not be simply converted at existing callsite because
rx_buf_len could be un-initialized, so let us register xdp_rxq_info
within i40e_configure_rx_ring(), which happen to be called with already
initialized rx_buf_len value.

Commit 5180ff1364 ("i40e: use int for i40e_status") converted 'err' to
int, so two variables to deal with return codes are not needed within
i40e_configure_rx_ring(). Remove 'ret' and use 'err' to handle status
from xdp_rxq_info registration.

Fixes: e213ced19b ("i40e: add support for XDP multi-buffer Rx")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/r/20240124191602.566724-11-maciej.fijalkowski@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maciej Fijalkowski 2024-01-24 20:16:01 +01:00 committed by Greg Kroah-Hartman
parent 6ae1d209c6
commit f95b542f3a
2 changed files with 24 additions and 25 deletions
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40
drivers/net/ethernet/intel/i40e/i40e_main.c
View file

@ -3578,40 +3578,48 @@ static int i40e_configure_rx_ring(struct i40e_ring *ring)
struct i40e_hmc_obj_rxq rx_ctx;
int err = 0;
bool ok;
int ret;
bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
/* clear the context structure first */
memset(&rx_ctx, 0, sizeof(rx_ctx));
if (ring->vsi->type == I40E_VSI_MAIN)
xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
ring->rx_buf_len = vsi->rx_buf_len;
/* XDP RX-queue info only needed for RX rings exposed to XDP */
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) {
ring->rx_buf_len =
xsk_pool_get_rx_frame_size(ring->xsk_pool);
ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
ring->rx_buf_len = xsk_pool_get_rx_frame_size(ring->xsk_pool);
err = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
MEM_TYPE_XSK_BUFF_POOL,
NULL);
if (ret)
return ret;
if (err)
return err;
dev_info(&vsi->back->pdev->dev,
"Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
ring->queue_index);
} else {
ring->rx_buf_len = vsi->rx_buf_len;
if (ring->vsi->type == I40E_VSI_MAIN) {
ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
MEM_TYPE_PAGE_SHARED,
NULL);
if (ret)
return ret;
}
err = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
MEM_TYPE_PAGE_SHARED,
NULL);
if (err)
return err;
}
skip:
xdp_init_buff(&ring->xdp, i40e_rx_pg_size(ring) / 2, &ring->xdp_rxq);
rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,

9
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View file

@ -1556,7 +1556,6 @@ void i40e_free_rx_resources(struct i40e_ring *rx_ring)
int i40e_setup_rx_descriptors(struct i40e_ring *rx_ring)
{
struct device *dev = rx_ring->dev;
int err;
u64_stats_init(&rx_ring->syncp);
@ -1577,14 +1576,6 @@ int i40e_setup_rx_descriptors(struct i40e_ring *rx_ring)
rx_ring->next_to_process = 0;
rx_ring->next_to_use = 0;
/* XDP RX-queue info only needed for RX rings exposed to XDP */
if (rx_ring->vsi->type == I40E_VSI_MAIN) {
err = xdp_rxq_info_reg(&rx_ring->xdp_rxq, rx_ring->netdev,
rx_ring->queue_index, rx_ring->q_vector->napi.napi_id);
if (err < 0)
return err;
}
rx_ring->xdp_prog = rx_ring->vsi->xdp_prog;
rx_ring->rx_bi =