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| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2010-12-14 15:24:08 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-16 14:43:14 -0800 |
| commit | 55508d601dab7df5cbcc7a63f4be8620eface204 (patch) | |
| tree | 346f30fae9c726d2e73aba2e37ce1e4a31dcea8c /net | |
| parent | 04fb451eff978ca059399eab83d5594b073caf6f (diff) | |
| download | linux-stable-55508d601dab7df5cbcc7a63f4be8620eface204.tar.gz linux-stable-55508d601dab7df5cbcc7a63f4be8620eface204.tar.bz2 linux-stable-55508d601dab7df5cbcc7a63f4be8620eface204.zip | |
net: Use skb_checksum_start_offset()
Replace skb->csum_start - skb_headroom(skb) with skb_checksum_start_offset().
Note for usb/smsc95xx: skb->data - skb->head == skb_headroom(skb).
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/dev.c | 6 | ||||
| -rw-r--r-- | net/core/skbuff.c | 2 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 2 | ||||
| -rw-r--r-- | net/packet/af_packet.c | 3 |
4 files changed, 6 insertions, 7 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 794b20de5d44..92d414ac0e30 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1793,7 +1793,7 @@ int skb_checksum_help(struct sk_buff *skb) goto out_set_summed; } - offset = skb->csum_start - skb_headroom(skb); + offset = skb_checksum_start_offset(skb); BUG_ON(offset >= skb_headlen(skb)); csum = skb_checksum(skb, offset, skb->len - offset, 0); @@ -2090,8 +2090,8 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, * checksumming here. */ if (skb->ip_summed == CHECKSUM_PARTIAL) { - skb_set_transport_header(skb, skb->csum_start - - skb_headroom(skb)); + skb_set_transport_header(skb, + skb_checksum_start_offset(skb)); if (!dev_can_checksum(dev, skb) && skb_checksum_help(skb)) goto out_kfree_skb; diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 8814a9a52f47..19d6c21220fd 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1824,7 +1824,7 @@ void skb_copy_and_csum_dev(const struct sk_buff *skb, u8 *to) long csstart; if (skb->ip_summed == CHECKSUM_PARTIAL) - csstart = skb->csum_start - skb_headroom(skb); + csstart = skb_checksum_start_offset(skb); else csstart = skb_headlen(skb); diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index b37181da487c..1198adf45102 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2226,7 +2226,7 @@ struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, int features) /* Do software UFO. Complete and fill in the UDP checksum as HW cannot * do checksum of UDP packets sent as multiple IP fragments. */ - offset = skb->csum_start - skb_headroom(skb); + offset = skb_checksum_start_offset(skb); csum = skb_checksum(skb, offset, skb->len - offset, 0); offset += skb->csum_offset; *(__sum16 *)(skb->data + offset) = csum_fold(csum); diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index e79efaf06389..91cb1d71f018 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1650,8 +1650,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, if (skb->ip_summed == CHECKSUM_PARTIAL) { vnet_hdr.flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; - vnet_hdr.csum_start = skb->csum_start - - skb_headroom(skb); + vnet_hdr.csum_start = skb_checksum_start_offset(skb); vnet_hdr.csum_offset = skb->csum_offset; } /* else everything is zero */ |