Release 4.8 net/ipv6/xfrm6_mode_transport.c
/*
* xfrm6_mode_transport.c - Transport mode encapsulation for IPv6.
*
* Copyright (C) 2002 USAGI/WIDE Project
* Copyright (c) 2004-2006 Herbert Xu <herbert@gondor.apana.org.au>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/stringify.h>
#include <net/dst.h>
#include <net/ipv6.h>
#include <net/xfrm.h>
/* Add encapsulation header.
*
* The IP header and mutable extension headers will be moved forward to make
* space for the encapsulation header.
*/
static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
struct ipv6hdr *iph;
u8 *prevhdr;
int hdr_len;
iph = ipv6_hdr(skb);
hdr_len = x->type->hdr_offset(x, skb, &prevhdr);
skb_set_mac_header(skb, (prevhdr - x->props.header_len) - skb->data);
skb_set_network_header(skb, -x->props.header_len);
skb->transport_header = skb->network_header + hdr_len;
__skb_pull(skb, hdr_len);
memmove(ipv6_hdr(skb), iph, hdr_len);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 89 | 78.07% | 4 | 44.44% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 13 | 11.40% | 3 | 33.33% |
| masahide nakamura | masahide nakamura | 7 | 6.14% | 1 | 11.11% |
| jamal hadi salim | jamal hadi salim | 5 | 4.39% | 1 | 11.11% |
| Total | 114 | 100.00% | 9 | 100.00% |
/* Remove encapsulation header.
*
* The IP header will be moved over the top of the encapsulation header.
*
* On entry, skb->h shall point to where the IP header should be and skb->nh
* shall be set to where the IP header currently is. skb->data shall point
* to the start of the payload.
*/
static int xfrm6_transport_input(struct xfrm_state *x, struct sk_buff *skb)
{
int ihl = skb->data - skb_transport_header(skb);
if (skb->transport_header != skb->network_header) {
memmove(skb_transport_header(skb),
skb_network_header(skb), ihl);
skb->network_header = skb->transport_header;
}
ipv6_hdr(skb)->payload_len = htons(skb->len + ihl -
sizeof(struct ipv6hdr));
skb_reset_transport_header(skb);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 64 | 68.82% | 2 | 28.57% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 29 | 31.18% | 5 | 71.43% |
| Total | 93 | 100.00% | 7 | 100.00% |
static struct xfrm_mode xfrm6_transport_mode = {
.input = xfrm6_transport_input,
.output = xfrm6_transport_output,
.owner = THIS_MODULE,
.encap = XFRM_MODE_TRANSPORT,
};
static int __init xfrm6_transport_init(void)
{
return xfrm_register_mode(&xfrm6_transport_mode, AF_INET6);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static void __exit xfrm6_transport_exit(void)
{
int err;
err = xfrm_unregister_mode(&xfrm6_transport_mode, AF_INET6);
BUG_ON(err);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 27 | 100.00% | 1 | 100.00% |
| Total | 27 | 100.00% | 1 | 100.00% |
module_init(xfrm6_transport_init);
module_exit(xfrm6_transport_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_MODE(AF_INET6, XFRM_MODE_TRANSPORT);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 274 | 83.54% | 5 | 35.71% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 42 | 12.80% | 7 | 50.00% |
| masahide nakamura | masahide nakamura | 7 | 2.13% | 1 | 7.14% |
| jamal hadi salim | jamal hadi salim | 5 | 1.52% | 1 | 7.14% |
| Total | 328 | 100.00% | 14 | 100.00% |
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