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| author | WANG Cong <xiyou.wangcong@gmail.com> | 2014-06-02 16:12:02 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-06-05 00:51:47 -0700 |
| commit | ebbe495f19d565bb39be31ca28126a222b6a66dd (patch) | |
| tree | 83588417e8efb7e6a73ed916cdfcb1a99b6265ac /net/ipv4/udp.c | |
| parent | 4cb28970a23ff209199b0a4358d68efe82c8f493 (diff) | |
| download | lwn-ebbe495f19d565bb39be31ca28126a222b6a66dd.tar.gz lwn-ebbe495f19d565bb39be31ca28126a222b6a66dd.zip | |
ipv4: use skb frags api in udp4_hwcsum()
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
| -rw-r--r-- | net/ipv4/udp.c | 9 |
1 files changed, 5 insertions, 4 deletions
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; |