diff options
| author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-03-27 13:05:27 +0000 |
|---|---|---|
| committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2010-03-27 13:05:27 +0000 |
| commit | 90c499bfa0efed26bbf8d879924291fb91ddff07 (patch) | |
| tree | b7af69e4c3b4d1c5c80fe5c26a9b64b934231cf6 | |
| parent | 1a729d6932b4e05786390ffb43c4e85ed894d0fc (diff) | |
ar71xx: ag71xx: copy received packet to avoid unaligned access in the IP stack
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20506 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -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 f4c5a1214..989ed0e8a 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++; |