xfrm6_tunnel.c (2d8ad8719591fa803b0d589ed057fa46f49b7155) xfrm6_tunnel.c (b71d1d426d263b0b6cb5760322efebbfc89d4463)
1/*
2 * Copyright (C)2003,2004 USAGI/WIDE Project
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

--- 54 unchanged lines hidden (view full) ---

63 atomic_t refcnt;
64 struct rcu_head rcu_head;
65};
66
67static DEFINE_SPINLOCK(xfrm6_tunnel_spi_lock);
68
69static struct kmem_cache *xfrm6_tunnel_spi_kmem __read_mostly;
70
1/*
2 * Copyright (C)2003,2004 USAGI/WIDE Project
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

--- 54 unchanged lines hidden (view full) ---

63 atomic_t refcnt;
64 struct rcu_head rcu_head;
65};
66
67static DEFINE_SPINLOCK(xfrm6_tunnel_spi_lock);
68
69static struct kmem_cache *xfrm6_tunnel_spi_kmem __read_mostly;
70
71static inline unsigned xfrm6_tunnel_spi_hash_byaddr(xfrm_address_t *addr)
71static inline unsigned xfrm6_tunnel_spi_hash_byaddr(const xfrm_address_t *addr)
72{
73 unsigned h;
74
75 h = (__force u32)(addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3]);
76 h ^= h >> 16;
77 h ^= h >> 8;
78 h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1;
79
80 return h;
81}
82
83static inline unsigned xfrm6_tunnel_spi_hash_byspi(u32 spi)
84{
85 return spi % XFRM6_TUNNEL_SPI_BYSPI_HSIZE;
86}
87
72{
73 unsigned h;
74
75 h = (__force u32)(addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3]);
76 h ^= h >> 16;
77 h ^= h >> 8;
78 h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1;
79
80 return h;
81}
82
83static inline unsigned xfrm6_tunnel_spi_hash_byspi(u32 spi)
84{
85 return spi % XFRM6_TUNNEL_SPI_BYSPI_HSIZE;
86}
87
88static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(struct net *net, xfrm_address_t *saddr)
88static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr)
89{
90 struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net);
91 struct xfrm6_tunnel_spi *x6spi;
92 struct hlist_node *pos;
93
94 hlist_for_each_entry_rcu(x6spi, pos,
95 &xfrm6_tn->spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)],
96 list_byaddr) {
97 if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0)
98 return x6spi;
99 }
100
101 return NULL;
102}
103
89{
90 struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net);
91 struct xfrm6_tunnel_spi *x6spi;
92 struct hlist_node *pos;
93
94 hlist_for_each_entry_rcu(x6spi, pos,
95 &xfrm6_tn->spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)],
96 list_byaddr) {
97 if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0)
98 return x6spi;
99 }
100
101 return NULL;
102}
103
104__be32 xfrm6_tunnel_spi_lookup(struct net *net, xfrm_address_t *saddr)
104__be32 xfrm6_tunnel_spi_lookup(struct net *net, const xfrm_address_t *saddr)
105{
106 struct xfrm6_tunnel_spi *x6spi;
107 u32 spi;
108
109 rcu_read_lock_bh();
110 x6spi = __xfrm6_tunnel_spi_lookup(net, saddr);
111 spi = x6spi ? x6spi->spi : 0;
112 rcu_read_unlock_bh();

--- 119 unchanged lines hidden (view full) ---

232static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
233{
234 return skb_network_header(skb)[IP6CB(skb)->nhoff];
235}
236
237static int xfrm6_tunnel_rcv(struct sk_buff *skb)
238{
239 struct net *net = dev_net(skb->dev);
105{
106 struct xfrm6_tunnel_spi *x6spi;
107 u32 spi;
108
109 rcu_read_lock_bh();
110 x6spi = __xfrm6_tunnel_spi_lookup(net, saddr);
111 spi = x6spi ? x6spi->spi : 0;
112 rcu_read_unlock_bh();

--- 119 unchanged lines hidden (view full) ---

232static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
233{
234 return skb_network_header(skb)[IP6CB(skb)->nhoff];
235}
236
237static int xfrm6_tunnel_rcv(struct sk_buff *skb)
238{
239 struct net *net = dev_net(skb->dev);
240 struct ipv6hdr *iph = ipv6_hdr(skb);
240 const struct ipv6hdr *iph = ipv6_hdr(skb);
241 __be32 spi;
242
241 __be32 spi;
242
243 spi = xfrm6_tunnel_spi_lookup(net, (xfrm_address_t *)&iph->saddr);
243 spi = xfrm6_tunnel_spi_lookup(net, (const xfrm_address_t *)&iph->saddr);
244 return xfrm6_rcv_spi(skb, IPPROTO_IPV6, spi) > 0 ? : 0;
245}
246
247static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
248 u8 type, u8 code, int offset, __be32 info)
249{
250 /* xfrm6_tunnel native err handling */
251 switch (type) {

--- 151 unchanged lines hidden --- 		244 return xfrm6_rcv_spi(skb, IPPROTO_IPV6, spi) > 0 ? : 0;
245}
246
247static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
248 u8 type, u8 code, int offset, __be32 info)
249{
250 /* xfrm6_tunnel native err handling */
251 switch (type) {

--- 151 unchanged lines hidden ---