Contributors: 22
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Simon Horman |
161 |
39.56% |
1 |
3.45% |
| David Ahern |
121 |
29.73% |
1 |
3.45% |
| Balazs Nemeth |
18 |
4.42% |
1 |
3.45% |
| Vlad Yasevich |
17 |
4.18% |
3 |
10.34% |
| Hideaki Yoshifuji / 吉藤英明 |
14 |
3.44% |
2 |
6.90% |
| Sridhar Samudrala |
14 |
3.44% |
1 |
3.45% |
| David S. Miller |
10 |
2.46% |
1 |
3.45% |
| Linus Torvalds (pre-git) |
7 |
1.72% |
3 |
10.34% |
| Pravin B Shelar |
7 |
1.72% |
1 |
3.45% |
| Joe Perches |
6 |
1.47% |
1 |
3.45% |
| Roopa Prabhu |
5 |
1.23% |
1 |
3.45% |
| Michał Mirosław |
4 |
0.98% |
2 |
6.90% |
| Herbert Xu |
4 |
0.98% |
2 |
6.90% |
| Hannes Frederic Sowa |
4 |
0.98% |
1 |
3.45% |
| Eric Dumazet |
3 |
0.74% |
1 |
3.45% |
| Andy Zhou |
2 |
0.49% |
1 |
3.45% |
| Harvey Harrison |
2 |
0.49% |
1 |
3.45% |
| Thomas Gleixner |
2 |
0.49% |
1 |
3.45% |
| Jason (Hui) Wang |
2 |
0.49% |
1 |
3.45% |
| Daniel Borkmann |
2 |
0.49% |
1 |
3.45% |
| Gerrit Renker |
1 |
0.25% |
1 |
3.45% |
| Florian Westphal |
1 |
0.25% |
1 |
3.45% |
| Total |
407 |
|
29 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* MPLS GSO Support
*
* Authors: Simon Horman (horms@verge.net.au)
*
* Based on: GSO portions of net/ipv4/gre.c
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/err.h>
#include <linux/module.h>
#include <linux/netdev_features.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/gso.h>
#include <net/mpls.h>
static struct sk_buff *mpls_gso_segment(struct sk_buff *skb,
netdev_features_t features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
u16 mac_offset = skb->mac_header;
netdev_features_t mpls_features;
u16 mac_len = skb->mac_len;
__be16 mpls_protocol;
unsigned int mpls_hlen;
skb_reset_network_header(skb);
mpls_hlen = skb_inner_network_header(skb) - skb_network_header(skb);
if (unlikely(!mpls_hlen || mpls_hlen % MPLS_HLEN))
goto out;
if (unlikely(!pskb_may_pull(skb, mpls_hlen)))
goto out;
/* Setup inner SKB. */
mpls_protocol = skb->protocol;
skb->protocol = skb->inner_protocol;
__skb_pull(skb, mpls_hlen);
skb->mac_len = 0;
skb_reset_mac_header(skb);
/* Segment inner packet. */
mpls_features = skb->dev->mpls_features & features;
segs = skb_mac_gso_segment(skb, mpls_features);
if (IS_ERR_OR_NULL(segs)) {
skb_gso_error_unwind(skb, mpls_protocol, mpls_hlen, mac_offset,
mac_len);
goto out;
}
skb = segs;
mpls_hlen += mac_len;
do {
skb->mac_len = mac_len;
skb->protocol = mpls_protocol;
skb_reset_inner_network_header(skb);
__skb_push(skb, mpls_hlen);
skb_reset_mac_header(skb);
skb_set_network_header(skb, mac_len);
} while ((skb = skb->next));
out:
return segs;
}
static struct packet_offload mpls_mc_offload __read_mostly = {
.type = cpu_to_be16(ETH_P_MPLS_MC),
.priority = 15,
.callbacks = {
.gso_segment = mpls_gso_segment,
},
};
static struct packet_offload mpls_uc_offload __read_mostly = {
.type = cpu_to_be16(ETH_P_MPLS_UC),
.priority = 15,
.callbacks = {
.gso_segment = mpls_gso_segment,
},
};
static int __init mpls_gso_init(void)
{
pr_info("MPLS GSO support\n");
dev_add_offload(&mpls_uc_offload);
dev_add_offload(&mpls_mc_offload);
return 0;
}
static void __exit mpls_gso_exit(void)
{
dev_remove_offload(&mpls_uc_offload);
dev_remove_offload(&mpls_mc_offload);
}
module_init(mpls_gso_init);
module_exit(mpls_gso_exit);
MODULE_DESCRIPTION("MPLS GSO support");
MODULE_AUTHOR("Simon Horman (horms@verge.net.au)");
MODULE_LICENSE("GPL");