X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=net%2Fipv6%2Fipcomp6.c;h=91b2a75b7d097e9997af9a970c26c4efbbd6c1b3;hb=1dfcae776548f464bee793d06484be275ba8efe7;hp=a81e9e9d93bd25f85d6f7b45e7f001ae7e1a31c8;hpb=e4d5b79c661c7cfca9d8d5afd040a295f128d3cb;p=safe%2Fjmp%2Flinux-2.6 diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c index a81e9e9..91b2a75 100644 --- a/net/ipv6/ipcomp6.c +++ b/net/ipv6/ipcomp6.c @@ -9,25 +9,25 @@ * 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. - * + * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * + * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -/* +/* * [Memo] * * Outbound: - * The compression of IP datagram MUST be done before AH/ESP processing, - * fragmentation, and the addition of Hop-by-Hop/Routing header. + * The compression of IP datagram MUST be done before AH/ESP processing, + * fragmentation, and the addition of Hop-by-Hop/Routing header. * * Inbound: - * The decompression of IP datagram MUST be done after the reassembly, + * The decompression of IP datagram MUST be done after the reassembly, * AH/ESP processing. */ #include @@ -65,7 +65,6 @@ static LIST_HEAD(ipcomp6_tfms_list); static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb) { int err = -ENOMEM; - struct ipv6hdr *iph; struct ipv6_comp_hdr *ipch; int plen, dlen; struct ipcomp_data *ipcd = x->data; @@ -79,9 +78,8 @@ static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb) skb->ip_summed = CHECKSUM_NONE; /* Remove ipcomp header and decompress original payload */ - iph = skb->nh.ipv6h; ipch = (void *)skb->data; - skb->h.raw = skb->nh.raw + sizeof(*ipch); + skb->transport_header = skb->network_header + sizeof(*ipch); __skb_pull(skb, sizeof(*ipch)); /* decompression */ @@ -111,7 +109,7 @@ static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb) skb->truesize += dlen - plen; __skb_put(skb, dlen - plen); - memcpy(skb->data, scratch, dlen); + skb_copy_to_linear_data(skb, scratch, dlen); err = ipch->nexthdr; out_put_cpu: @@ -124,15 +122,13 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb) { int err; struct ipv6hdr *top_iph; - int hdr_len; struct ipv6_comp_hdr *ipch; struct ipcomp_data *ipcd = x->data; int plen, dlen; u8 *start, *scratch; struct crypto_comp *tfm; int cpu; - - hdr_len = skb->h.raw - skb->data; + int hdr_len = skb_transport_offset(skb); /* check whether datagram len is larger than threshold */ if ((skb->len - hdr_len) < ipcd->threshold) { @@ -145,7 +141,7 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb) /* compression */ plen = skb->len - hdr_len; dlen = IPCOMP_SCRATCH_SIZE; - start = skb->h.raw; + start = skb_transport_header(skb); cpu = get_cpu(); scratch = *per_cpu_ptr(ipcomp6_scratches, cpu); @@ -166,19 +162,19 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb) top_iph->payload_len = htons(skb->len - sizeof(struct ipv6hdr)); ipch = (struct ipv6_comp_hdr *)start; - ipch->nexthdr = *skb->nh.raw; + ipch->nexthdr = *skb_network_header(skb); ipch->flags = 0; ipch->cpi = htons((u16 )ntohl(x->id.spi)); - *skb->nh.raw = IPPROTO_COMP; + *skb_network_header(skb) = IPPROTO_COMP; out_ok: return 0; } static void ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, - int type, int code, int offset, __u32 info) + int type, int code, int offset, __be32 info) { - u32 spi; + __be32 spi; struct ipv6hdr *iph = (struct ipv6hdr*)skb->data; struct ipv6_comp_hdr *ipcomph = (struct ipv6_comp_hdr*)(skb->data+offset); struct xfrm_state *x; @@ -199,6 +195,7 @@ static void ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, static struct xfrm_state *ipcomp6_tunnel_create(struct xfrm_state *x) { struct xfrm_state *t = NULL; + u8 mode = XFRM_MODE_TUNNEL; t = xfrm_state_alloc(); if (!t) @@ -212,7 +209,9 @@ static struct xfrm_state *ipcomp6_tunnel_create(struct xfrm_state *x) memcpy(t->id.daddr.a6, x->id.daddr.a6, sizeof(struct in6_addr)); memcpy(&t->sel, &x->sel, sizeof(t->sel)); t->props.family = AF_INET6; - t->props.mode = 1; + if (x->props.mode == XFRM_MODE_BEET) + mode = x->props.mode; + t->props.mode = mode; memcpy(t->props.saddr.a6, x->props.saddr.a6, sizeof(struct in6_addr)); if (xfrm_init_state(t)) @@ -234,7 +233,7 @@ static int ipcomp6_tunnel_attach(struct xfrm_state *x) { int err = 0; struct xfrm_state *t = NULL; - u32 spi; + __be32 spi; spi = xfrm6_tunnel_spi_lookup((xfrm_address_t *)&x->props.saddr); if (spi) @@ -417,9 +416,9 @@ static int ipcomp6_init_state(struct xfrm_state *x) goto out; x->props.header_len = 0; - if (x->props.mode) + if (x->props.mode == XFRM_MODE_TUNNEL) x->props.header_len += sizeof(struct ipv6hdr); - + mutex_lock(&ipcomp6_resource_mutex); if (!ipcomp6_alloc_scratches()) goto error; @@ -429,7 +428,7 @@ static int ipcomp6_init_state(struct xfrm_state *x) goto error; mutex_unlock(&ipcomp6_resource_mutex); - if (x->props.mode) { + if (x->props.mode == XFRM_MODE_TUNNEL) { err = ipcomp6_tunnel_attach(x); if (err) goto error_tunnel; @@ -452,7 +451,7 @@ error: goto out; } -static struct xfrm_type ipcomp6_type = +static struct xfrm_type ipcomp6_type = { .description = "IPCOMP6", .owner = THIS_MODULE, @@ -461,9 +460,10 @@ static struct xfrm_type ipcomp6_type = .destructor = ipcomp6_destroy, .input = ipcomp6_input, .output = ipcomp6_output, + .hdr_offset = xfrm6_find_1stfragopt, }; -static struct inet6_protocol ipcomp6_protocol = +static struct inet6_protocol ipcomp6_protocol = { .handler = xfrm6_rcv, .err_handler = ipcomp6_err, @@ -486,7 +486,7 @@ static int __init ipcomp6_init(void) static void __exit ipcomp6_fini(void) { - if (inet6_del_protocol(&ipcomp6_protocol, IPPROTO_COMP) < 0) + if (inet6_del_protocol(&ipcomp6_protocol, IPPROTO_COMP) < 0) printk(KERN_INFO "ipv6 ipcomp close: can't remove protocol\n"); if (xfrm_unregister_type(&ipcomp6_type, AF_INET6) < 0) printk(KERN_INFO "ipv6 ipcomp close: can't remove xfrm type\n"); @@ -498,4 +498,4 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("IP Payload Compression Protocol (IPComp) for IPv6 - RFC3173"); MODULE_AUTHOR("Mitsuru KANDA "); - +MODULE_ALIAS_XFRM_TYPE(AF_INET6, XFRM_PROTO_COMP);