From ebbe495f19d565bb39be31ca28126a222b6a66dd Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Mon, 2 Jun 2014 16:12:02 -0700 Subject: ipv4: use skb frags api in udp4_hwcsum() Cc: "David S. Miller" Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- net/ipv4/udp.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'net/ipv4/udp.c') diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 8d8c33d84c9a..185ed3e59802 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -727,13 +727,12 @@ EXPORT_SYMBOL(udp_flush_pending_frames); void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst) { struct udphdr *uh = udp_hdr(skb); - struct sk_buff *frags = skb_shinfo(skb)->frag_list; int offset = skb_transport_offset(skb); int len = skb->len - offset; int hlen = len; __wsum csum = 0; - if (!frags) { + if (!skb_has_frag_list(skb)) { /* * Only one fragment on the socket. */ @@ -742,15 +741,17 @@ void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst) uh->check = ~csum_tcpudp_magic(src, dst, len, IPPROTO_UDP, 0); } else { + struct sk_buff *frags; + /* * HW-checksum won't work as there are two or more * fragments on the socket so that all csums of sk_buffs * should be together */ - do { + skb_walk_frags(skb, frags) { csum = csum_add(csum, frags->csum); hlen -= frags->len; - } while ((frags = frags->next)); + } csum = skb_checksum(skb, offset, hlen, csum); skb->ip_summed = CHECKSUM_NONE; -- cgit v1.2.3-59-g8ed1b