From bbe735e4247dba32568a305553b010081c8dea99 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 10 Mar 2007 22:16:10 -0300 Subject: [SK_BUFF]: Introduce skb_network_offset() For the quite common 'skb->nh.raw - skb->data' sequence. Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/packet/af_packet.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'net/packet/af_packet.c') diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 1225e751b3f1..a059cc7be672 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -491,7 +491,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet skb_push(skb, skb->data - skb_mac_header(skb)); else if (skb->pkt_type == PACKET_OUTGOING) { /* Special case: outgoing packets have ll header at head */ - skb_pull(skb, skb->nh.raw - skb->data); + skb_pull(skb, skb_network_offset(skb)); } } @@ -595,7 +595,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe skb_push(skb, skb->data - skb_mac_header(skb)); else if (skb->pkt_type == PACKET_OUTGOING) { /* Special case: outgoing packets have ll header at head */ - skb_pull(skb, skb->nh.raw - skb->data); + skb_pull(skb, skb_network_offset(skb)); } } @@ -613,7 +613,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe if (sk->sk_type == SOCK_DGRAM) { macoff = netoff = TPACKET_ALIGN(TPACKET_HDRLEN) + 16; } else { - unsigned maclen = skb->nh.raw - skb->data; + unsigned maclen = skb_network_offset(skb); netoff = TPACKET_ALIGN(TPACKET_HDRLEN + (maclen < 16 ? 16 : maclen)); macoff = netoff - maclen; } @@ -1145,7 +1145,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, aux.tp_len = PACKET_SKB_CB(skb)->origlen; aux.tp_snaplen = skb->len; aux.tp_mac = 0; - aux.tp_net = skb->nh.raw - skb->data; + aux.tp_net = skb_network_offset(skb); put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux); } -- cgit v1.2.3-55-g7522