diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2023-11-21 00:44:02 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-11-22 02:32:49 +0100 |
| commit | 6d1add95536bafe585c500ad8114af7ed4225a0f (patch) | |
| tree | b4358d79632021c7ff2b8147abe384f6293df709 /drivers/net/ethernet/broadcom/bnxt/bnxt.c | |
| parent | bnxt_en: Add db_ring_mask and related macro to bnxt_db_info struct. (diff) | |
| download | linux-6d1add95536bafe585c500ad8114af7ed4225a0f.tar.xz linux-6d1add95536bafe585c500ad8114af7ed4225a0f.zip | |
bnxt_en: Modify TX ring indexing logic.
Change the TX ring logic so that the index increments unbounded and
mask it only when needed.
Modify the existing macros so that the index is not masked. Add a
new macro RING_TX() to mask it only when needed to get the index of
txr->tx_buf_ring[].
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20231120234405.194542-11-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 48c443d52344..c83450564765 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -432,9 +432,9 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) len = skb_headlen(skb); last_frag = skb_shinfo(skb)->nr_frags; - txbd = &txr->tx_desc_ring[TX_RING(prod)][TX_IDX(prod)]; + txbd = &txr->tx_desc_ring[TX_RING(bp, prod)][TX_IDX(prod)]; - tx_buf = &txr->tx_buf_ring[prod]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, prod)]; tx_buf->skb = skb; tx_buf->nr_frags = last_frag; @@ -522,7 +522,7 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) txbd->tx_bd_opaque = SET_TX_OPAQUE(bp, txr, prod, 2); prod = NEXT_TX(prod); tx_push->tx_bd_opaque = txbd->tx_bd_opaque; - txbd = &txr->tx_desc_ring[TX_RING(prod)][TX_IDX(prod)]; + txbd = &txr->tx_desc_ring[TX_RING(bp, prod)][TX_IDX(prod)]; memcpy(txbd, tx_push1, sizeof(*txbd)); prod = NEXT_TX(prod); tx_push->doorbell = @@ -569,7 +569,7 @@ normal_tx: prod = NEXT_TX(prod); txbd1 = (struct tx_bd_ext *) - &txr->tx_desc_ring[TX_RING(prod)][TX_IDX(prod)]; + &txr->tx_desc_ring[TX_RING(bp, prod)][TX_IDX(prod)]; txbd1->tx_bd_hsize_lflags = lflags; if (skb_is_gso(skb)) { @@ -610,7 +610,7 @@ normal_tx: skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; prod = NEXT_TX(prod); - txbd = &txr->tx_desc_ring[TX_RING(prod)][TX_IDX(prod)]; + txbd = &txr->tx_desc_ring[TX_RING(bp, prod)][TX_IDX(prod)]; len = skb_frag_size(frag); mapping = skb_frag_dma_map(&pdev->dev, frag, 0, len, @@ -619,7 +619,7 @@ normal_tx: if (unlikely(dma_mapping_error(&pdev->dev, mapping))) goto tx_dma_error; - tx_buf = &txr->tx_buf_ring[prod]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, prod)]; dma_unmap_addr_set(tx_buf, mapping, mapping); txbd->tx_bd_haddr = cpu_to_le64(mapping); @@ -668,7 +668,7 @@ tx_dma_error: /* start back at beginning and unmap skb */ prod = txr->tx_prod; - tx_buf = &txr->tx_buf_ring[prod]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, prod)]; dma_unmap_single(&pdev->dev, dma_unmap_addr(tx_buf, mapping), skb_headlen(skb), DMA_TO_DEVICE); prod = NEXT_TX(prod); @@ -676,7 +676,7 @@ tx_dma_error: /* unmap remaining mapped pages */ for (i = 0; i < last_frag; i++) { prod = NEXT_TX(prod); - tx_buf = &txr->tx_buf_ring[prod]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, prod)]; dma_unmap_page(&pdev->dev, dma_unmap_addr(tx_buf, mapping), skb_frag_size(&skb_shinfo(skb)->frags[i]), DMA_TO_DEVICE); @@ -702,12 +702,12 @@ static void __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr, u16 cons = txr->tx_cons; int tx_pkts = 0; - while (cons != hw_cons) { + while (RING_TX(bp, cons) != hw_cons) { struct bnxt_sw_tx_bd *tx_buf; struct sk_buff *skb; int j, last; - tx_buf = &txr->tx_buf_ring[cons]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, cons)]; cons = NEXT_TX(cons); skb = tx_buf->skb; tx_buf->skb = NULL; @@ -731,7 +731,7 @@ static void __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr, for (j = 0; j < last; j++) { cons = NEXT_TX(cons); - tx_buf = &txr->tx_buf_ring[cons]; + tx_buf = &txr->tx_buf_ring[RING_TX(bp, cons)]; dma_unmap_page( &pdev->dev, dma_unmap_addr(tx_buf, mapping), |