Release 4.14 net/ipv6/udp_offload.c
/*
* IPV6 GSO/GRO offload support
* Linux INET6 implementation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* UDPv6 GSO support
*/
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <net/protocol.h>
#include <net/ipv6.h>
#include <net/udp.h>
#include <net/ip6_checksum.h>
#include "ip6_offload.h"
static struct sk_buff *udp6_tunnel_segment(struct sk_buff *skb,
netdev_features_t features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
if (skb->encapsulation && skb_shinfo(skb)->gso_type &
(SKB_GSO_UDP_TUNNEL|SKB_GSO_UDP_TUNNEL_CSUM))
segs = skb_udp_tunnel_segment(skb, features, true);
return segs;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Vlad Yasevich | 29 | 48.33% | 1 | 16.67% |
| Américo Wang | 24 | 40.00% | 2 | 33.33% |
| Tom Herbert | 6 | 10.00% | 2 | 33.33% |
| David S. Miller | 1 | 1.67% | 1 | 16.67% |
| Total | 60 | 100.00% | 6 | 100.00% |
static struct sk_buff **udp6_gro_receive(struct sk_buff **head,
struct sk_buff *skb)
{
struct udphdr *uh = udp_gro_udphdr(skb);
if (unlikely(!uh))
goto flush;
/* Don't bother verifying checksum if we're going to flush anyway. */
if (NAPI_GRO_CB(skb)->flush)
goto skip;
if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check,
ip6_gro_compute_pseudo))
goto flush;
else if (uh->check)
skb_gro_checksum_try_convert(skb, IPPROTO_UDP, uh->check,
ip6_gro_compute_pseudo);
skip:
NAPI_GRO_CB(skb)->is_ipv6 = 1;
return udp_gro_receive(head, skb, uh, udp6_lib_lookup_skb);
flush:
NAPI_GRO_CB(skb)->flush = 1;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tom Herbert | 129 | 100.00% | 4 | 100.00% |
| Total | 129 | 100.00% | 4 | 100.00% |
static int udp6_gro_complete(struct sk_buff *skb, int nhoff)
{
const struct ipv6hdr *ipv6h = ipv6_hdr(skb);
struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);
if (uh->check) {
skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL_CSUM;
uh->check = ~udp_v6_check(skb->len - nhoff, &ipv6h->saddr,
&ipv6h->daddr, 0);
} else {
skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL;
}
return udp_gro_complete(skb, nhoff, udp6_lib_lookup_skb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tom Herbert | 107 | 99.07% | 3 | 75.00% |
| Eric Dumazet | 1 | 0.93% | 1 | 25.00% |
| Total | 108 | 100.00% | 4 | 100.00% |
static const struct net_offload udpv6_offload = {
.callbacks = {
.gso_segment = udp6_tunnel_segment,
.gro_receive = udp6_gro_receive,
.gro_complete = udp6_gro_complete,
},
};
int udpv6_offload_init(void)
{
return inet6_add_offload(&udpv6_offload, IPPROTO_UDP);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Vlad Yasevich | 15 | 93.75% | 1 | 50.00% |
| Tom Herbert | 1 | 6.25% | 1 | 50.00% |
| Total | 16 | 100.00% | 2 | 100.00% |
int udpv6_offload_exit(void)
{
return inet6_del_offload(&udpv6_offload, IPPROTO_UDP);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tom Herbert | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tom Herbert | 272 | 71.77% | 7 | 50.00% |
| Vlad Yasevich | 80 | 21.11% | 3 | 21.43% |
| Américo Wang | 24 | 6.33% | 2 | 14.29% |
| David S. Miller | 2 | 0.53% | 1 | 7.14% |
| Eric Dumazet | 1 | 0.26% | 1 | 7.14% |
| Total | 379 | 100.00% | 14 | 100.00% |
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