Release 4.8 net/ipv4/xfrm4_mode_transport.c
/*
* xfrm4_mode_transport.c - Transport mode encapsulation for IPv4.
*
* 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/ip.h>
#include <net/xfrm.h>
/* Add encapsulation header.
*
* The IP header will be moved forward to make space for the encapsulation
* header.
*/
static int xfrm4_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
struct iphdr *iph = ip_hdr(skb);
int ihl = iph->ihl * 4;
skb_set_network_header(skb, -x->props.header_len);
skb->mac_header = skb->network_header +
offsetof(struct iphdr, protocol);
skb->transport_header = skb->network_header + ihl;
__skb_pull(skb, ihl);
memmove(skb_network_header(skb), iph, ihl);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 69 | 72.63% | 3 | 42.86% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 21 | 22.11% | 3 | 42.86% |
| jamal hadi salim | jamal hadi salim | 5 | 5.26% | 1 | 14.29% |
| Total | 95 | 100.00% | 7 | 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 xfrm4_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;
}
ip_hdr(skb)->tot_len = htons(skb->len + ihl);
skb_reset_transport_header(skb);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 61 | 70.11% | 2 | 25.00% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 26 | 29.89% | 6 | 75.00% |
| Total | 87 | 100.00% | 8 | 100.00% |
static struct xfrm_mode xfrm4_transport_mode = {
.input = xfrm4_transport_input,
.output = xfrm4_transport_output,
.owner = THIS_MODULE,
.encap = XFRM_MODE_TRANSPORT,
};
static int __init xfrm4_transport_init(void)
{
return xfrm_register_mode(&xfrm4_transport_mode, AF_INET);
}
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 xfrm4_transport_exit(void)
{
int err;
err = xfrm_unregister_mode(&xfrm4_transport_mode, AF_INET);
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(xfrm4_transport_init);
module_exit(xfrm4_transport_exit);
MODULE_LICENSE("GPL");
MODULE_ALIAS_XFRM_MODE(AF_INET, XFRM_MODE_TRANSPORT);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| herbert xu | herbert xu | 251 | 82.84% | 4 | 33.33% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 47 | 15.51% | 7 | 58.33% |
| jamal hadi salim | jamal hadi salim | 5 | 1.65% | 1 | 8.33% |
| Total | 303 | 100.00% | 12 | 100.00% |
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