ip6_checksum.c (e5451c8f8330e03ad3cfa16048b4daf961af434f) ip6_checksum.c (1e94082963747b551b129528714827f76a090e93)
1#include <net/ip.h>
2#include <net/udp.h>
3#include <net/udplite.h>
4#include <asm/checksum.h>
5
6#ifndef _HAVE_ARCH_IPV6_CSUM
7__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
8 const struct in6_addr *daddr,
1#include <net/ip.h>
2#include <net/udp.h>
3#include <net/udplite.h>
4#include <asm/checksum.h>
5
6#ifndef _HAVE_ARCH_IPV6_CSUM
7__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
8 const struct in6_addr *daddr,
9 __u32 len, unsigned short proto,
10 __wsum csum)
9 __u32 len, __u8 proto, __wsum csum)
11{
12
13 int carry;
14 __u32 ulen;
15 __u32 uproto;
16 __u32 sum = (__force u32)csum;
17
18 sum += (__force u32)saddr->s6_addr32[0];

--- 74 unchanged lines hidden (view full) ---

93 const struct in6_addr *daddr, int len)
94{
95 struct udphdr *uh = udp_hdr(skb);
96
97 if (nocheck)
98 uh->check = 0;
99 else if (skb_is_gso(skb))
100 uh->check = ~udp_v6_check(len, saddr, daddr, 0);
10{
11
12 int carry;
13 __u32 ulen;
14 __u32 uproto;
15 __u32 sum = (__force u32)csum;
16
17 sum += (__force u32)saddr->s6_addr32[0];

--- 74 unchanged lines hidden (view full) ---

92 const struct in6_addr *daddr, int len)
93{
94 struct udphdr *uh = udp_hdr(skb);
95
96 if (nocheck)
97 uh->check = 0;
98 else if (skb_is_gso(skb))
99 uh->check = ~udp_v6_check(len, saddr, daddr, 0);
101 else if (skb_dst(skb) && skb_dst(skb)->dev &&
102 (skb_dst(skb)->dev->features & NETIF_F_IPV6_CSUM)) {
103
104 BUG_ON(skb->ip_summed == CHECKSUM_PARTIAL);
105
100 else if (skb->ip_summed == CHECKSUM_PARTIAL) {
101 uh->check = 0;
102 uh->check = udp_v6_check(len, saddr, daddr, lco_csum(skb));
103 if (uh->check == 0)
104 uh->check = CSUM_MANGLED_0;
105 } else {
106 skb->ip_summed = CHECKSUM_PARTIAL;
107 skb->csum_start = skb_transport_header(skb) - skb->head;
108 skb->csum_offset = offsetof(struct udphdr, check);
109 uh->check = ~udp_v6_check(len, saddr, daddr, 0);
106 skb->ip_summed = CHECKSUM_PARTIAL;
107 skb->csum_start = skb_transport_header(skb) - skb->head;
108 skb->csum_offset = offsetof(struct udphdr, check);
109 uh->check = ~udp_v6_check(len, saddr, daddr, 0);
110 } else {
111 __wsum csum;
112
113 BUG_ON(skb->ip_summed == CHECKSUM_PARTIAL);
114
115 uh->check = 0;
116 csum = skb_checksum(skb, 0, len, 0);
117 uh->check = udp_v6_check(len, saddr, daddr, csum);
118 if (uh->check == 0)
119 uh->check = CSUM_MANGLED_0;
120
121 skb->ip_summed = CHECKSUM_UNNECESSARY;
122 }
123}
124EXPORT_SYMBOL(udp6_set_csum);
110 }
111}
112EXPORT_SYMBOL(udp6_set_csum);