Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * xfrm_input.c |
| 3 | * |
| 4 | * Changes: |
| 5 | * YOSHIFUJI Hideaki @USAGI |
| 6 | * Split up af-specific portion |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/slab.h> |
| 11 | #include <linux/module.h> |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 12 | #include <linux/netdevice.h> |
| 13 | #include <net/dst.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <net/ip.h> |
| 15 | #include <net/xfrm.h> |
| 16 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 17 | static struct kmem_cache *secpath_cachep __read_mostly; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | |
| 19 | void __secpath_destroy(struct sec_path *sp) |
| 20 | { |
| 21 | int i; |
| 22 | for (i = 0; i < sp->len; i++) |
Herbert Xu | dbe5b4a | 2006-04-01 00:54:16 -0800 | [diff] [blame] | 23 | xfrm_state_put(sp->xvec[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | kmem_cache_free(secpath_cachep, sp); |
| 25 | } |
| 26 | EXPORT_SYMBOL(__secpath_destroy); |
| 27 | |
| 28 | struct sec_path *secpath_dup(struct sec_path *src) |
| 29 | { |
| 30 | struct sec_path *sp; |
| 31 | |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 32 | sp = kmem_cache_alloc(secpath_cachep, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | if (!sp) |
| 34 | return NULL; |
| 35 | |
| 36 | sp->len = 0; |
| 37 | if (src) { |
| 38 | int i; |
| 39 | |
| 40 | memcpy(sp, src, sizeof(*sp)); |
| 41 | for (i = 0; i < sp->len; i++) |
Herbert Xu | dbe5b4a | 2006-04-01 00:54:16 -0800 | [diff] [blame] | 42 | xfrm_state_hold(sp->xvec[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | } |
| 44 | atomic_set(&sp->refcnt, 1); |
| 45 | return sp; |
| 46 | } |
| 47 | EXPORT_SYMBOL(secpath_dup); |
| 48 | |
| 49 | /* Fetch spi and seq from ipsec header */ |
| 50 | |
Al Viro | 6067b2b | 2006-09-27 18:47:59 -0700 | [diff] [blame] | 51 | int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | { |
| 53 | int offset, offset_seq; |
Herbert Xu | 4407250 | 2007-10-17 21:30:34 -0700 | [diff] [blame] | 54 | int hlen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | switch (nexthdr) { |
| 57 | case IPPROTO_AH: |
Herbert Xu | 4407250 | 2007-10-17 21:30:34 -0700 | [diff] [blame] | 58 | hlen = sizeof(struct ip_auth_hdr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | offset = offsetof(struct ip_auth_hdr, spi); |
| 60 | offset_seq = offsetof(struct ip_auth_hdr, seq_no); |
| 61 | break; |
| 62 | case IPPROTO_ESP: |
Herbert Xu | 4407250 | 2007-10-17 21:30:34 -0700 | [diff] [blame] | 63 | hlen = sizeof(struct ip_esp_hdr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | offset = offsetof(struct ip_esp_hdr, spi); |
| 65 | offset_seq = offsetof(struct ip_esp_hdr, seq_no); |
| 66 | break; |
| 67 | case IPPROTO_COMP: |
| 68 | if (!pskb_may_pull(skb, sizeof(struct ip_comp_hdr))) |
| 69 | return -EINVAL; |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 70 | *spi = htonl(ntohs(*(__be16*)(skb_transport_header(skb) + 2))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | *seq = 0; |
| 72 | return 0; |
| 73 | default: |
| 74 | return 1; |
| 75 | } |
| 76 | |
Herbert Xu | 4407250 | 2007-10-17 21:30:34 -0700 | [diff] [blame] | 77 | if (!pskb_may_pull(skb, hlen)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | return -EINVAL; |
| 79 | |
Arnaldo Carvalho de Melo | 9c70220 | 2007-04-25 18:04:18 -0700 | [diff] [blame] | 80 | *spi = *(__be32*)(skb_transport_header(skb) + offset); |
| 81 | *seq = *(__be32*)(skb_transport_header(skb) + offset_seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | return 0; |
| 83 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Herbert Xu | 227620e | 2007-11-13 21:41:28 -0800 | [diff] [blame] | 85 | int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb) |
| 86 | { |
Kazunori MIYAZAWA | df9dcb4 | 2008-03-24 14:51:51 -0700 | [diff] [blame] | 87 | struct xfrm_mode *inner_mode = x->inner_mode; |
Herbert Xu | 227620e | 2007-11-13 21:41:28 -0800 | [diff] [blame] | 88 | int err; |
| 89 | |
| 90 | err = x->outer_mode->afinfo->extract_input(x, skb); |
| 91 | if (err) |
| 92 | return err; |
| 93 | |
Kazunori MIYAZAWA | df9dcb4 | 2008-03-24 14:51:51 -0700 | [diff] [blame] | 94 | if (x->sel.family == AF_UNSPEC) { |
| 95 | inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol); |
| 96 | if (inner_mode == NULL) |
| 97 | return -EAFNOSUPPORT; |
| 98 | } |
| 99 | |
| 100 | skb->protocol = inner_mode->afinfo->eth_proto; |
| 101 | return inner_mode->input2(x, skb); |
Herbert Xu | 227620e | 2007-11-13 21:41:28 -0800 | [diff] [blame] | 102 | } |
| 103 | EXPORT_SYMBOL(xfrm_prepare_input); |
| 104 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 105 | int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) |
| 106 | { |
Alexey Dobriyan | bd235e3 | 2008-11-25 17:37:56 -0800 | [diff] [blame] | 107 | struct net *net = dev_net(skb->dev); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 108 | int err; |
| 109 | __be32 seq; |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 110 | struct xfrm_state *x; |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 111 | xfrm_address_t *daddr; |
Kazunori MIYAZAWA | df9dcb4 | 2008-03-24 14:51:51 -0700 | [diff] [blame] | 112 | struct xfrm_mode *inner_mode; |
Herbert Xu | 2fcb45b | 2007-12-03 22:54:12 -0800 | [diff] [blame] | 113 | unsigned int family; |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 114 | int decaps = 0; |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 115 | int async = 0; |
| 116 | |
| 117 | /* A negative encap_type indicates async resumption. */ |
| 118 | if (encap_type < 0) { |
| 119 | async = 1; |
Herbert Xu | 0050112 | 2007-12-11 01:53:43 -0800 | [diff] [blame] | 120 | x = xfrm_input_state(skb); |
Herbert Xu | b318e0e | 2008-02-12 22:50:35 -0800 | [diff] [blame] | 121 | seq = XFRM_SKB_CB(skb)->seq.input; |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 122 | goto resume; |
| 123 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 124 | |
Herbert Xu | b2aa5e9 | 2007-11-13 21:44:55 -0800 | [diff] [blame] | 125 | /* Allocate new secpath or COW existing one. */ |
| 126 | if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) { |
| 127 | struct sec_path *sp; |
| 128 | |
| 129 | sp = secpath_dup(skb->sp); |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 130 | if (!sp) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 131 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINERROR); |
Herbert Xu | b2aa5e9 | 2007-11-13 21:44:55 -0800 | [diff] [blame] | 132 | goto drop; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 133 | } |
Herbert Xu | b2aa5e9 | 2007-11-13 21:44:55 -0800 | [diff] [blame] | 134 | if (skb->sp) |
| 135 | secpath_put(skb->sp); |
| 136 | skb->sp = sp; |
| 137 | } |
| 138 | |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 139 | daddr = (xfrm_address_t *)(skb_network_header(skb) + |
| 140 | XFRM_SPI_SKB_CB(skb)->daddroff); |
Herbert Xu | 2fcb45b | 2007-12-03 22:54:12 -0800 | [diff] [blame] | 141 | family = XFRM_SPI_SKB_CB(skb)->family; |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 142 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 143 | seq = 0; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 144 | if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 145 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 146 | goto drop; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 147 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 148 | |
| 149 | do { |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 150 | if (skb->sp->len == XFRM_MAX_DEPTH) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 151 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINBUFFERERROR); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 152 | goto drop; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 153 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 154 | |
Jamal Hadi Salim | bd55775 | 2010-02-22 16:20:22 -0800 | [diff] [blame] | 155 | x = xfrm_state_lookup(net, skb->mark, daddr, spi, nexthdr, family); |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 156 | if (x == NULL) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 157 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINNOSTATES); |
Paul Moore | afeb14b | 2007-12-21 14:58:11 -0800 | [diff] [blame] | 158 | xfrm_audit_state_notfound(skb, family, spi, seq); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 159 | goto drop; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 160 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 161 | |
Herbert Xu | b2aa5e9 | 2007-11-13 21:44:55 -0800 | [diff] [blame] | 162 | skb->sp->xvec[skb->sp->len++] = x; |
| 163 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 164 | spin_lock(&x->lock); |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 165 | if (unlikely(x->km.state != XFRM_STATE_VALID)) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 166 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEINVALID); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 167 | goto drop_unlock; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 168 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 169 | |
David S. Miller | 3de77cf | 2008-12-18 19:23:56 -0800 | [diff] [blame] | 170 | if ((x->encap ? x->encap->encap_type : 0) != encap_type) { |
| 171 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMISMATCH); |
| 172 | goto drop_unlock; |
| 173 | } |
| 174 | |
Paul Moore | afeb14b | 2007-12-21 14:58:11 -0800 | [diff] [blame] | 175 | if (x->props.replay_window && xfrm_replay_check(x, skb, seq)) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 176 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATESEQERROR); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 177 | goto drop_unlock; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 178 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 179 | |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 180 | if (xfrm_state_check_expire(x)) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 181 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEEXPIRED); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 182 | goto drop_unlock; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 183 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 184 | |
Herbert Xu | 0ebea8e | 2007-11-13 21:45:58 -0800 | [diff] [blame] | 185 | spin_unlock(&x->lock); |
| 186 | |
Herbert Xu | b318e0e | 2008-02-12 22:50:35 -0800 | [diff] [blame] | 187 | XFRM_SKB_CB(skb)->seq.input = seq; |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 188 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 189 | nexthdr = x->type->input(x, skb); |
Herbert Xu | 0ebea8e | 2007-11-13 21:45:58 -0800 | [diff] [blame] | 190 | |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 191 | if (nexthdr == -EINPROGRESS) |
| 192 | return 0; |
| 193 | |
| 194 | resume: |
Herbert Xu | 0ebea8e | 2007-11-13 21:45:58 -0800 | [diff] [blame] | 195 | spin_lock(&x->lock); |
Herbert Xu | 668dc8a | 2007-12-16 15:55:02 -0800 | [diff] [blame] | 196 | if (nexthdr <= 0) { |
Herbert Xu | 9dd3245 | 2007-12-30 21:10:30 -0800 | [diff] [blame] | 197 | if (nexthdr == -EBADMSG) { |
| 198 | xfrm_audit_state_icvfail(x, skb, |
| 199 | x->type->proto); |
Herbert Xu | 668dc8a | 2007-12-16 15:55:02 -0800 | [diff] [blame] | 200 | x->stats.integrity_failed++; |
Herbert Xu | 9dd3245 | 2007-12-30 21:10:30 -0800 | [diff] [blame] | 201 | } |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 202 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEPROTOERROR); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 203 | goto drop_unlock; |
Herbert Xu | 668dc8a | 2007-12-16 15:55:02 -0800 | [diff] [blame] | 204 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 205 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 206 | /* only the first xfrm gets the encap type */ |
| 207 | encap_type = 0; |
| 208 | |
| 209 | if (x->props.replay_window) |
| 210 | xfrm_replay_advance(x, seq); |
| 211 | |
| 212 | x->curlft.bytes += skb->len; |
| 213 | x->curlft.packets++; |
| 214 | |
| 215 | spin_unlock(&x->lock); |
| 216 | |
Herbert Xu | 60d5fcf | 2007-11-19 18:47:58 -0800 | [diff] [blame] | 217 | XFRM_MODE_SKB_CB(skb)->protocol = nexthdr; |
| 218 | |
Kazunori MIYAZAWA | df9dcb4 | 2008-03-24 14:51:51 -0700 | [diff] [blame] | 219 | inner_mode = x->inner_mode; |
| 220 | |
| 221 | if (x->sel.family == AF_UNSPEC) { |
| 222 | inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol); |
| 223 | if (inner_mode == NULL) |
| 224 | goto drop; |
| 225 | } |
| 226 | |
| 227 | if (inner_mode->input(x, skb)) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 228 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMODEERROR); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 229 | goto drop; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 230 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 231 | |
| 232 | if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) { |
| 233 | decaps = 1; |
| 234 | break; |
| 235 | } |
| 236 | |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 237 | /* |
| 238 | * We need the inner address. However, we only get here for |
| 239 | * transport mode so the outer address is identical. |
| 240 | */ |
| 241 | daddr = &x->id.daddr; |
Herbert Xu | 2fcb45b | 2007-12-03 22:54:12 -0800 | [diff] [blame] | 242 | family = x->outer_mode->afinfo->family; |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 243 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 244 | err = xfrm_parse_spi(skb, nexthdr, &spi, &seq); |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 245 | if (err < 0) { |
Alexey Dobriyan | 59c9940 | 2008-11-25 17:59:52 -0800 | [diff] [blame] | 246 | XFRM_INC_STATS(net, LINUX_MIB_XFRMINHDRERROR); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 247 | goto drop; |
Masahide NAKAMURA | 0aa6477 | 2007-12-20 20:43:36 -0800 | [diff] [blame] | 248 | } |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 249 | } while (!err); |
| 250 | |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 251 | nf_reset(skb); |
| 252 | |
| 253 | if (decaps) { |
Eric Dumazet | adf3090 | 2009-06-02 05:19:30 +0000 | [diff] [blame] | 254 | skb_dst_drop(skb); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 255 | netif_rx(skb); |
| 256 | return 0; |
| 257 | } else { |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 258 | return x->inner_mode->afinfo->transport_finish(skb, async); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | drop_unlock: |
| 262 | spin_unlock(&x->lock); |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 263 | drop: |
Herbert Xu | 716062f | 2007-11-13 21:44:23 -0800 | [diff] [blame] | 264 | kfree_skb(skb); |
| 265 | return 0; |
| 266 | } |
| 267 | EXPORT_SYMBOL(xfrm_input); |
| 268 | |
Herbert Xu | 1bf06cd | 2007-11-19 18:50:17 -0800 | [diff] [blame] | 269 | int xfrm_input_resume(struct sk_buff *skb, int nexthdr) |
| 270 | { |
| 271 | return xfrm_input(skb, nexthdr, 0, -1); |
| 272 | } |
| 273 | EXPORT_SYMBOL(xfrm_input_resume); |
| 274 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | void __init xfrm_input_init(void) |
| 276 | { |
| 277 | secpath_cachep = kmem_cache_create("secpath_cache", |
| 278 | sizeof(struct sec_path), |
Alexey Dobriyan | e5d679f | 2006-08-26 19:25:52 -0700 | [diff] [blame] | 279 | 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 280 | NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | } |