Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Arnaldo Carvalho de Melo |
152 |
26.16% |
1 |
5.56% |
| Linus Torvalds (pre-git) |
131 |
22.55% |
3 |
16.67% |
| Al Viro |
122 |
21.00% |
2 |
11.11% |
| Tom Herbert |
80 |
13.77% |
1 |
5.56% |
| Vlad Yasevich |
45 |
7.75% |
1 |
5.56% |
| Pravin B Shelar |
16 |
2.75% |
1 |
5.56% |
| Edward Cree |
14 |
2.41% |
2 |
11.11% |
| Américo Wang |
9 |
1.55% |
1 |
5.56% |
| Benjamin LaHaise |
3 |
0.52% |
1 |
5.56% |
| Gerrit Renker |
3 |
0.52% |
1 |
5.56% |
| Kuniyuki Iwashima |
2 |
0.34% |
1 |
5.56% |
| Alexey Kuznetsov |
2 |
0.34% |
1 |
5.56% |
| Greg Kroah-Hartman |
1 |
0.17% |
1 |
5.56% |
| Alexander Duyck |
1 |
0.17% |
1 |
5.56% |
| Total |
581 |
|
18 |
|
// SPDX-License-Identifier: GPL-2.0
#include <net/ip.h>
#include <net/ip6_checksum.h>
#include <net/udp.h>
#include <asm/checksum.h>
#ifndef _HAVE_ARCH_IPV6_CSUM
__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, __u8 proto, __wsum csum)
{
int carry;
__u32 ulen;
__u32 uproto;
__u32 sum = (__force u32)csum;
sum += (__force u32)saddr->s6_addr32[0];
carry = (sum < (__force u32)saddr->s6_addr32[0]);
sum += carry;
sum += (__force u32)saddr->s6_addr32[1];
carry = (sum < (__force u32)saddr->s6_addr32[1]);
sum += carry;
sum += (__force u32)saddr->s6_addr32[2];
carry = (sum < (__force u32)saddr->s6_addr32[2]);
sum += carry;
sum += (__force u32)saddr->s6_addr32[3];
carry = (sum < (__force u32)saddr->s6_addr32[3]);
sum += carry;
sum += (__force u32)daddr->s6_addr32[0];
carry = (sum < (__force u32)daddr->s6_addr32[0]);
sum += carry;
sum += (__force u32)daddr->s6_addr32[1];
carry = (sum < (__force u32)daddr->s6_addr32[1]);
sum += carry;
sum += (__force u32)daddr->s6_addr32[2];
carry = (sum < (__force u32)daddr->s6_addr32[2]);
sum += carry;
sum += (__force u32)daddr->s6_addr32[3];
carry = (sum < (__force u32)daddr->s6_addr32[3]);
sum += carry;
ulen = (__force u32)htonl((__u32) len);
sum += ulen;
carry = (sum < ulen);
sum += carry;
uproto = (__force u32)htonl(proto);
sum += uproto;
carry = (sum < uproto);
sum += carry;
return csum_fold((__force __wsum)sum);
}
EXPORT_SYMBOL(csum_ipv6_magic);
#endif
/* Function to set UDP checksum for an IPv6 UDP packet. This is intended
* for the simple case like when setting the checksum for a UDP tunnel.
*/
void udp6_set_csum(bool nocheck, struct sk_buff *skb,
const struct in6_addr *saddr,
const struct in6_addr *daddr, int len)
{
struct udphdr *uh = udp_hdr(skb);
if (nocheck)
uh->check = 0;
else if (skb_is_gso(skb))
uh->check = ~udp_v6_check(len, saddr, daddr, 0);
else if (skb->ip_summed == CHECKSUM_PARTIAL) {
uh->check = 0;
uh->check = udp_v6_check(len, saddr, daddr, lco_csum(skb));
if (uh->check == 0)
uh->check = CSUM_MANGLED_0;
} else {
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum_start = skb_transport_header(skb) - skb->head;
skb->csum_offset = offsetof(struct udphdr, check);
uh->check = ~udp_v6_check(len, saddr, daddr, 0);
}
}
EXPORT_SYMBOL(udp6_set_csum);