net/cpsw: don't continue if we miss to allocate rx skbs

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if during "ifconfig up" we run out of mem we continue regardless how
many skbs we got. In worst case we have zero RX skbs and can't ever
receive further packets since the RX skbs are never reallocated. If
cpdma_chan_submit() fails we even leak the skb.
This patch changes the behavior here:
If we fail to allocate an skb during bring up we don't continue and
report that error. Same goes for errors from cpdma_chan_submit().
While here I changed to __netdev_alloc_skb_ip_align() so GFP_KERNEL can
be used.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Sebastian Siewior 2013-04-23 07:31:36 +00:00 • committed by David S. Miller

parent 817f6d1a13

commit aacebbf802

1 changed files with 22 additions and 13 deletions

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drivers/net/ethernet/ti/cpsw.c

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