diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c index 4bc95950ea1b..41e232e133db 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c @@ -19,8 +19,9 @@ #include "bnxt.h" #include "bnxt_xdp.h" -void __bnxt_xmit_xdp(struct bnxt *bp, struct bnxt_tx_ring_info *txr, - dma_addr_t mapping, u32 len, u16 rx_prod) +struct bnxt_sw_tx_bd *bnxt_xmit_bd(struct bnxt *bp, + struct bnxt_tx_ring_info *txr, + dma_addr_t mapping, u32 len) { struct bnxt_sw_tx_bd *tx_buf; struct tx_bd *txbd; @@ -29,7 +30,6 @@ void __bnxt_xmit_xdp(struct bnxt *bp, struct bnxt_tx_ring_info *txr, prod = txr->tx_prod; tx_buf = &txr->tx_buf_ring[prod]; - tx_buf->rx_prod = rx_prod; txbd = &txr->tx_desc_ring[TX_RING(prod)][TX_IDX(prod)]; flags = (len << TX_BD_LEN_SHIFT) | (1 << TX_BD_FLAGS_BD_CNT_SHIFT) | @@ -40,30 +40,43 @@ void __bnxt_xmit_xdp(struct bnxt *bp, struct bnxt_tx_ring_info *txr, prod = NEXT_TX(prod); txr->tx_prod = prod; + return tx_buf; +} + +static void __bnxt_xmit_xdp(struct bnxt *bp, struct bnxt_tx_ring_info *txr, + dma_addr_t mapping, u32 len, u16 rx_prod) +{ + struct bnxt_sw_tx_bd *tx_buf; + + tx_buf = bnxt_xmit_bd(bp, txr, mapping, len); + tx_buf->rx_prod = rx_prod; + tx_buf->action = XDP_TX; } void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int nr_pkts) { struct bnxt_tx_ring_info *txr = bnapi->tx_ring; struct bnxt_rx_ring_info *rxr = bnapi->rx_ring; + bool rx_doorbell_needed = false; struct bnxt_sw_tx_bd *tx_buf; u16 tx_cons = txr->tx_cons; u16 last_tx_cons = tx_cons; - u16 rx_prod; int i; for (i = 0; i < nr_pkts; i++) { - last_tx_cons = tx_cons; + tx_buf = &txr->tx_buf_ring[tx_cons]; + + if (tx_buf->action == XDP_TX) { + rx_doorbell_needed = true; + last_tx_cons = tx_cons; + } tx_cons = NEXT_TX(tx_cons); } txr->tx_cons = tx_cons; - if (bnxt_tx_avail(bp, txr) == bp->tx_ring_size) { - rx_prod = rxr->rx_prod; - } else { + if (rx_doorbell_needed) { tx_buf = &txr->tx_buf_ring[last_tx_cons]; - rx_prod = tx_buf->rx_prod; + bnxt_db_write(bp, &rxr->rx_db, tx_buf->rx_prod); } - bnxt_db_write(bp, &rxr->rx_db, rx_prod); } /* returns the following: |