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| author | Gabor Juhos <juhosg@openwrt.org> | 2010-03-27 13:05:27 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2010-03-27 13:05:27 +0000 |
| commit | b7ca043240a27dac279949409d20fd0f35667577 (patch) | |
| tree | 3ce82a702cde99035f09b17bd4a8483b88dc7003 /target/linux/ar71xx/files/drivers | |
| parent | f9acf8ada191798952817bf3650832b685c441ed (diff) | |
| download | mtk-20170518-b7ca043240a27dac279949409d20fd0f35667577.zip mtk-20170518-b7ca043240a27dac279949409d20fd0f35667577.tar.gz mtk-20170518-b7ca043240a27dac279949409d20fd0f35667577.tar.bz2 | |
ar71xx: ag71xx: copy received packet to avoid unaligned access in the IP stack
SVN-Revision: 20506
Diffstat (limited to 'target/linux/ar71xx/files/drivers')
| -rw-r--r-- | target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c index f4c5a12..989ed0e 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c @@ -759,6 +759,23 @@ static int ag71xx_tx_packets(struct ag71xx *ag) return sent; } +static int ag71xx_rx_copy_skb(struct ag71xx *ag, struct sk_buff **pskb, + int pktlen) +{ + struct sk_buff *copy_skb; + + copy_skb = netdev_alloc_skb(ag->dev, pktlen + NET_IP_ALIGN); + if (!copy_skb) + return -ENOMEM; + + skb_reserve(copy_skb, NET_IP_ALIGN); + skb_copy_from_linear_data(*pskb, copy_skb->data, pktlen); + dev_kfree_skb_any(*pskb); + *pskb = copy_skb; + + return 0; +} + static int ag71xx_rx_packets(struct ag71xx *ag, int limit) { struct net_device *dev = ag->dev; @@ -798,6 +815,8 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit) if (ag71xx_has_ar8216(ag)) err = ag71xx_remove_ar8216_header(ag, skb); + else + err = ag71xx_rx_copy_skb(ag, &skb, pktlen); if (err) { dev->stats.rx_dropped++; |