diff options
author | Somnath Kotur <somnath.kotur@broadcom.com> | 2023-08-17 16:19:06 -0700 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2023-08-18 19:13:58 -0700 |
commit | 86b05508f7759f41b530c6fec8858124745eada4 (patch) | |
tree | 27f8f82b4f31ccfaf31c2ebfcab762200901a854 /drivers | |
parent | c6cfc6cd7685a24ea00a24a4fb91aa96d611084e (diff) |
bnxt_en: Use the unified RX page pool buffers for XDP and non-XDP
Convert to use the page pool buffers for the aggregation ring when
running in non-XDP mode. This simplifies the driver and we benefit
from the recycling of pages. Adjust the page pool size to account
for the aggregation ring size.
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20230817231911.165035-2-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 71 | ||||
-rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 |
2 files changed, 14 insertions, 60 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 7be917a8da48..6b815a2288e2 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -877,48 +877,15 @@ static inline int bnxt_alloc_rx_page(struct bnxt *bp, struct rx_bd *rxbd = &rxr->rx_agg_desc_ring[RX_RING(prod)][RX_IDX(prod)]; struct bnxt_sw_rx_agg_bd *rx_agg_buf; - struct pci_dev *pdev = bp->pdev; struct page *page; dma_addr_t mapping; u16 sw_prod = rxr->rx_sw_agg_prod; unsigned int offset = 0; - if (BNXT_RX_PAGE_MODE(bp)) { - page = __bnxt_alloc_rx_page(bp, &mapping, rxr, &offset, gfp); - - if (!page) - return -ENOMEM; - - } else { - if (PAGE_SIZE > BNXT_RX_PAGE_SIZE) { - page = rxr->rx_page; - if (!page) { - page = alloc_page(gfp); - if (!page) - return -ENOMEM; - rxr->rx_page = page; - rxr->rx_page_offset = 0; - } - offset = rxr->rx_page_offset; - rxr->rx_page_offset += BNXT_RX_PAGE_SIZE; - if (rxr->rx_page_offset == PAGE_SIZE) - rxr->rx_page = NULL; - else - get_page(page); - } else { - page = alloc_page(gfp); - if (!page) - return -ENOMEM; - } + page = __bnxt_alloc_rx_page(bp, &mapping, rxr, &offset, gfp); - mapping = dma_map_page_attrs(&pdev->dev, page, offset, - BNXT_RX_PAGE_SIZE, DMA_FROM_DEVICE, - DMA_ATTR_WEAK_ORDERING); - if (dma_mapping_error(&pdev->dev, mapping)) { - __free_page(page); - return -EIO; - } - } + if (!page) + return -ENOMEM; if (unlikely(test_bit(sw_prod, rxr->rx_agg_bmap))) sw_prod = bnxt_find_next_agg_idx(rxr, sw_prod); @@ -1204,6 +1171,7 @@ static struct sk_buff *bnxt_rx_agg_pages_skb(struct bnxt *bp, total_frag_len = __bnxt_rx_agg_pages(bp, cpr, shinfo, idx, agg_bufs, tpa, NULL); if (!total_frag_len) { + skb_mark_for_recycle(skb); dev_kfree_skb(skb); return NULL; } @@ -1794,6 +1762,7 @@ static void bnxt_deliver_skb(struct bnxt *bp, struct bnxt_napi *bnapi, return; } skb_record_rx_queue(skb, bnapi->index); + skb_mark_for_recycle(skb); napi_gro_receive(&bnapi->napi, skb); } @@ -3002,30 +2971,16 @@ skip_rx_buf_free: if (!page) continue; - if (BNXT_RX_PAGE_MODE(bp)) { - dma_unmap_page_attrs(&pdev->dev, rx_agg_buf->mapping, - BNXT_RX_PAGE_SIZE, bp->rx_dir, - DMA_ATTR_WEAK_ORDERING); - rx_agg_buf->page = NULL; - __clear_bit(i, rxr->rx_agg_bmap); - - page_pool_recycle_direct(rxr->page_pool, page); - } else { - dma_unmap_page_attrs(&pdev->dev, rx_agg_buf->mapping, - BNXT_RX_PAGE_SIZE, DMA_FROM_DEVICE, - DMA_ATTR_WEAK_ORDERING); - rx_agg_buf->page = NULL; - __clear_bit(i, rxr->rx_agg_bmap); + dma_unmap_page_attrs(&pdev->dev, rx_agg_buf->mapping, + BNXT_RX_PAGE_SIZE, bp->rx_dir, + DMA_ATTR_WEAK_ORDERING); + rx_agg_buf->page = NULL; + __clear_bit(i, rxr->rx_agg_bmap); - __free_page(page); - } + page_pool_recycle_direct(rxr->page_pool, page); } skip_rx_agg_free: - if (rxr->rx_page) { - __free_page(rxr->rx_page); - rxr->rx_page = NULL; - } map = rxr->rx_tpa_idx_map; if (map) memset(map->agg_idx_bmap, 0, sizeof(map->agg_idx_bmap)); @@ -3244,7 +3199,9 @@ static int bnxt_alloc_rx_page_pool(struct bnxt *bp, { struct page_pool_params pp = { 0 }; - pp.pool_size = bp->rx_ring_size; + pp.pool_size = bp->rx_agg_ring_size; + if (BNXT_RX_PAGE_MODE(bp)) + pp.pool_size += bp->rx_ring_size; pp.nid = dev_to_node(&bp->pdev->dev); pp.napi = &rxr->bnapi->napi; pp.dev = &bp->pdev->dev; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 362918876d3c..d6a1eaa69774 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -919,9 +919,6 @@ struct bnxt_rx_ring_info { unsigned long *rx_agg_bmap; u16 rx_agg_bmap_size; - struct page *rx_page; - unsigned int rx_page_offset; - dma_addr_t rx_desc_mapping[MAX_RX_PAGES]; dma_addr_t rx_agg_desc_mapping[MAX_RX_AGG_PAGES]; |