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slcan: ldisc generated skbs are received in softirq context 

As this discussion pointed out

http://marc.info/?l=linux-netdev&m=131257225602375

netdevices that are based on serial line disciplines should use netif_rx_ni()
when pushing received socketbuffers into the netdev rx queue.

Following commit 614851601c ("slip: fix NOHZ
local_softirq_pending 08 warning") this patch updates the slcan driver
accordingly.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Matvejchikov Ilya <matvejchikov@gmail.com>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Hartkopp 2011-08-10 05:18:59 +00:00 committed by David S. Miller
parent e33f7a9f37
commit 174c95d252
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/slcan.c
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@ -197,7 +197,7 @@ static void slc_bump(struct slcan *sl)
skb->ip_summed = CHECKSUM_UNNECESSARY; skb->ip_summed = CHECKSUM_UNNECESSARY;
memcpy(skb_put(skb, sizeof(struct can_frame)), memcpy(skb_put(skb, sizeof(struct can_frame)),
&cf, sizeof(struct can_frame)); &cf, sizeof(struct can_frame));
netif_rx(skb); netif_rx_ni(skb);
sl->dev->stats.rx_packets++; sl->dev->stats.rx_packets++;
sl->dev->stats.rx_bytes += cf.can_dlc; sl->dev->stats.rx_bytes += cf.can_dlc;