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Diffstat (limited to 'include/net/udplite.h')
-rw-r--r--include/net/udplite.h45
1 files changed, 9 insertions, 36 deletions
diff --git a/include/net/udplite.h b/include/net/udplite.h
index 67ac5142430..635b0eafca9 100644
--- a/include/net/udplite.h
+++ b/include/net/udplite.h
@@ -47,11 +47,10 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
return 1;
}
- UDP_SKB_CB(skb)->partial_cov = 0;
cscov = ntohs(uh->len);
if (cscov == 0) /* Indicates that full coverage is required. */
- cscov = skb->len;
+ ;
else if (cscov < 8 || cscov > skb->len) {
/*
* Coverage length violates RFC 3828: log and discard silently.
@@ -60,42 +59,16 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh)
cscov, skb->len);
return 1;
- } else if (cscov < skb->len)
+ } else if (cscov < skb->len) {
UDP_SKB_CB(skb)->partial_cov = 1;
-
- UDP_SKB_CB(skb)->cscov = cscov;
-
- /*
- * There is no known NIC manufacturer supporting UDP-Lite yet,
- * hence ip_summed is always (re-)set to CHECKSUM_NONE.
- */
- skb->ip_summed = CHECKSUM_NONE;
+ UDP_SKB_CB(skb)->cscov = cscov;
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
+ }
return 0;
}
-static __inline__ int udplite4_csum_init(struct sk_buff *skb, struct udphdr *uh)
-{
- int rc = udplite_checksum_init(skb, uh);
-
- if (!rc)
- skb->csum = csum_tcpudp_nofold(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
- skb->len, IPPROTO_UDPLITE, 0);
- return rc;
-}
-
-static __inline__ int udplite6_csum_init(struct sk_buff *skb, struct udphdr *uh)
-{
- int rc = udplite_checksum_init(skb, uh);
-
- if (!rc)
- skb->csum = ~csum_unfold(csum_ipv6_magic(&skb->nh.ipv6h->saddr,
- &skb->nh.ipv6h->daddr,
- skb->len, IPPROTO_UDPLITE, 0));
- return rc;
-}
-
static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh)
{
int cscov = up->len;
@@ -128,14 +101,14 @@ static inline int udplite_sender_cscov(struct udp_sock *up, struct udphdr *uh)
static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)
{
- int off, len, cscov = udplite_sender_cscov(udp_sk(sk), skb->h.uh);
+ int cscov = udplite_sender_cscov(udp_sk(sk), udp_hdr(skb));
__wsum csum = 0;
skb->ip_summed = CHECKSUM_NONE; /* no HW support for checksumming */
skb_queue_walk(&sk->sk_write_queue, skb) {
- off = skb->h.raw - skb->data;
- len = skb->len - off;
+ const int off = skb_transport_offset(skb);
+ const int len = skb->len - off;
csum = skb_checksum(skb, off, (cscov > len)? len : cscov, csum);