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CAIF: Fix IPv6 support in receive path for GPRS/3G

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Checks version field of IP in the receive path for GPRS/3G data
and appropriately sets the value of skb->protocol.

Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kumar Sanghvi 2011-01-07 01:57:08 +00:00 committed by David S. Miller
parent 545ecdc3b3
commit d7b92affba
1 changed files with 17 additions and 1 deletions
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18
net/caif/chnl_net.c
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@ -76,6 +76,8 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt)
struct chnl_net *priv = container_of(layr, struct chnl_net, chnl); struct chnl_net *priv = container_of(layr, struct chnl_net, chnl);
int pktlen; int pktlen;
int err = 0; int err = 0;
const u8 *ip_version;
u8 buf;
priv = container_of(layr, struct chnl_net, chnl); priv = container_of(layr, struct chnl_net, chnl);
@ -90,7 +92,21 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt)
* send the packet to the net stack. * send the packet to the net stack.
*/ */
skb->dev = priv->netdev; skb->dev = priv->netdev;
skb->protocol = htons(ETH_P_IP);
/* check the version of IP */
ip_version = skb_header_pointer(skb, 0, 1, &buf);
if (!ip_version)
return -EINVAL;
switch (*ip_version >> 4) {
case 4:
skb->protocol = htons(ETH_P_IP);
break;
case 6:
skb->protocol = htons(ETH_P_IPV6);
break;
default:
return -EINVAL;
}
/* If we change the header in loop mode, the checksum is corrupted. */ /* If we change the header in loop mode, the checksum is corrupted. */
if (priv->conn_req.protocol == CAIFPROTO_DATAGRAM_LOOP) if (priv->conn_req.protocol == CAIFPROTO_DATAGRAM_LOOP)