openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

net/sonic: Start packet transmission immediately 

Give the transmit command as soon as the transmit descriptor is ready.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Finn Thain 2020-02-16 08:03:32 +11:00 committed by David S. Miller
parent 13cfff1a90
commit 8fe676b3db
1 changed files with 7 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/net/ethernet/natsemi/sonic.c
View File

@ -311,12 +311,17 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
sonic_tda_put(dev, entry, SONIC_TD_LINK,
sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL);
sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK, ~SONIC_EOL &
sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK));
netif_dbg(lp, tx_queued, dev, "%s: issuing Tx command\n", __func__);
SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
lp->tx_len[entry] = length;
lp->tx_laddr[entry] = laddr;
lp->tx_skb[entry] = skb;
sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK,
sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL);
lp->eol_tx = entry;
entry = (entry + 1) & SONIC_TDS_MASK;
@ -327,10 +332,6 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
/* after this packet, wait for ISR to free up some TDAs */
}
netif_dbg(lp, tx_queued, dev, "%s: issuing Tx command\n", __func__);
SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);
spin_unlock_irqrestore(&lp->lock, flags);
return NETDEV_TX_OK;