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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2017-04-09 07:02:31 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-04-09 07:31:00 +0200 |
| commit | e7e20169af313e5b1f7e1850889dada8c960ce13 (patch) | |
| tree | c580fbd24e0e53635bb929b991a083abc2a27a67 /src/compat/udp_tunnel | |
| parent | compat: support 3.12 (diff) | |
| download | wireguard-monolithic-historical-e7e20169af313e5b1f7e1850889dada8c960ce13.tar.xz wireguard-monolithic-historical-e7e20169af313e5b1f7e1850889dada8c960ce13.zip | |
compat: support 3.10
Diffstat (limited to 'src/compat/udp_tunnel')
| -rw-r--r-- | src/compat/udp_tunnel/udp_tunnel.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/compat/udp_tunnel/udp_tunnel.c b/src/compat/udp_tunnel/udp_tunnel.c index 58ac61c..2c60681 100644 --- a/src/compat/udp_tunnel/udp_tunnel.c +++ b/src/compat/udp_tunnel/udp_tunnel.c @@ -9,6 +9,12 @@ #include <net/udp.h> #include <net/udp_tunnel.h> +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) +#define __sk_user_data(sk) ((*((void __rcu **)&(sk)->sk_user_data))) +#define rcu_dereference_sk_user_data(sk) rcu_dereference(__sk_user_data((sk))) +#define rcu_assign_sk_user_data(sk, ptr) rcu_assign_pointer(__sk_user_data((sk)), ptr) +#endif + /* This is global so, uh, only one real call site... This is the kind of horrific hack you'd expect to see in compat code. */ static udp_tunnel_encap_rcv_t encap_rcv = NULL; static void our_sk_data_ready(struct sock *sk @@ -129,6 +135,45 @@ static void fake_destructor(struct sk_buff *skb) { } +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) +static int our_iptunnel_xmit(struct rtable *rt, struct sk_buff *skb, + __be32 src, __be32 dst, __u8 proto, + __u8 tos, __u8 ttl, __be16 df, bool xnet) +{ + int pkt_len = skb->len; + struct iphdr *iph; + int err; + + skb_scrub_packet(skb, xnet); + + skb->rxhash = 0; + skb_dst_set(skb, &rt->dst); + memset(IPCB(skb), 0, sizeof(*IPCB(skb))); + + /* Push down and install the IP header. */ + skb_push(skb, sizeof(struct iphdr)); + skb_reset_network_header(skb); + + iph = ip_hdr(skb); + + iph->version = 4; + iph->ihl = sizeof(struct iphdr) >> 2; + iph->frag_off = df; + iph->protocol = proto; + iph->tos = tos; + iph->daddr = dst; + iph->saddr = src; + iph->ttl = ttl; + __ip_select_ident(iph, skb_shinfo(skb)->gso_segs ?: 1); + + err = ip_local_out(skb); + if (unlikely(net_xmit_eval(err))) + pkt_len = 0; + return pkt_len; +} +#define iptunnel_xmit our_iptunnel_xmit +#endif + void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb, __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df, __be16 src_port, __be16 dst_port, |