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authorMichael Chan2017-05-30 01:06:09 +0200
committerDavid S. Miller2017-05-31 00:14:07 +0200
commit4d172f21cefe896df8477940269b8d52129f8c87 (patch)
tree58eee5d89ddd189ad88fbaee4202d3a7b08e4465 /drivers/net/ethernet/broadcom/bnxt/bnxt.c
parentbnxt_en: Optimize doorbell write operations for newer chips. (diff)
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bnxt_en: Implement xmit_more.
Do not write the TX doorbell if skb->xmit_more is set unless the TX queue is full. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.c')
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index d7c1295c16cf..2c6af316d2de 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -463,13 +463,17 @@ normal_tx:
prod = NEXT_TX(prod);
txr->tx_prod = prod;
- bnxt_db_write(bp, txr->tx_doorbell, DB_KEY_TX | prod);
+ if (!skb->xmit_more)
+ bnxt_db_write(bp, txr->tx_doorbell, DB_KEY_TX | prod);
tx_done:
mmiowb();
if (unlikely(bnxt_tx_avail(bp, txr) <= MAX_SKB_FRAGS + 1)) {
+ if (skb->xmit_more && !tx_buf->is_push)
+ bnxt_db_write(bp, txr->tx_doorbell, DB_KEY_TX | prod);
+
netif_tx_stop_queue(txq);
/* netif_tx_stop_queue() must be done before checking