*/
/* Changes:
- * yoshfuji : ensure not to overrun while parsing
+ * yoshfuji : ensure not to overrun while parsing
* tlv options.
* Mitsuru KANDA @USAGI and: Remove ipv6_parse_exthdrs().
* YOSHIFUJI Hideaki @USAGI Register inbound extension header
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/sockios.h>
-#include <linux/sched.h>
#include <linux/net.h>
#include <linux/netdevice.h>
#include <linux/in6.h>
#include <net/ndisc.h>
#include <net/ip6_route.h>
#include <net/addrconf.h>
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+#include <net/xfrm.h>
+#endif
#include <asm/uaccess.h>
+int ipv6_find_tlv(struct sk_buff *skb, int offset, int type)
+{
+ const unsigned char *nh = skb_network_header(skb);
+ int packet_len = skb->tail - skb->network_header;
+ struct ipv6_opt_hdr *hdr;
+ int len;
+
+ if (offset + 2 > packet_len)
+ goto bad;
+ hdr = (struct ipv6_opt_hdr *)(nh + offset);
+ len = ((hdr->hdrlen + 1) << 3);
+
+ if (offset + len > packet_len)
+ goto bad;
+
+ offset += 2;
+ len -= 2;
+
+ while (len > 0) {
+ int opttype = nh[offset];
+ int optlen;
+
+ if (opttype == type)
+ return offset;
+
+ switch (opttype) {
+ case IPV6_TLV_PAD0:
+ optlen = 1;
+ break;
+ default:
+ optlen = nh[offset + 1] + 2;
+ if (optlen > len)
+ goto bad;
+ break;
+ }
+ offset += optlen;
+ len -= optlen;
+ }
+ /* not_found */
+ bad:
+ return -1;
+}
+EXPORT_SYMBOL_GPL(ipv6_find_tlv);
+
/*
* Parsing tlv encoded headers.
*
struct tlvtype_proc {
int type;
- int (*func)(struct sk_buff *skb, int offset);
+ int (*func)(struct sk_buff **skbp, int offset);
};
/*********************
/* An unknown option is detected, decide what to do */
-static int ip6_tlvopt_unknown(struct sk_buff *skb, int optoff)
+static int ip6_tlvopt_unknown(struct sk_buff **skbp, int optoff)
{
- switch ((skb->nh.raw[optoff] & 0xC0) >> 6) {
+ struct sk_buff *skb = *skbp;
+
+ switch ((skb_network_header(skb)[optoff] & 0xC0) >> 6) {
case 0: /* ignore */
return 1;
/* Actually, it is redundant check. icmp_send
will recheck in any case.
*/
- if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr))
+ if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr))
break;
case 2: /* send ICMP PARM PROB regardless and drop packet */
icmpv6_param_prob(skb, ICMPV6_UNK_OPTION, optoff);
return 0;
- };
+ }
kfree_skb(skb);
return 0;
/* Parse tlv encoded option header (hop-by-hop or destination) */
-static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff *skb)
+static int ip6_parse_tlv(struct tlvtype_proc *procs, struct sk_buff **skbp)
{
+ struct sk_buff *skb = *skbp;
struct tlvtype_proc *curr;
- int off = skb->h.raw - skb->nh.raw;
- int len = ((skb->h.raw[1]+1)<<3);
+ const unsigned char *nh = skb_network_header(skb);
+ int off = skb_network_header_len(skb);
+ int len = (skb_transport_header(skb)[1] + 1) << 3;
- if ((skb->h.raw + len) - skb->data > skb_headlen(skb))
+ if (skb_transport_offset(skb) + len > skb_headlen(skb))
goto bad;
off += 2;
len -= 2;
while (len > 0) {
- int optlen = skb->nh.raw[off+1]+2;
+ int optlen = nh[off + 1] + 2;
- switch (skb->nh.raw[off]) {
+ switch (nh[off]) {
case IPV6_TLV_PAD0:
optlen = 1;
break;
if (optlen > len)
goto bad;
for (curr=procs; curr->type >= 0; curr++) {
- if (curr->type == skb->nh.raw[off]) {
- /* type specific length/alignment
- checks will be performed in the
+ if (curr->type == nh[off]) {
+ /* type specific length/alignment
+ checks will be performed in the
func(). */
- if (curr->func(skb, off) == 0)
+ if (curr->func(skbp, off) == 0)
return 0;
break;
}
}
if (curr->type < 0) {
- if (ip6_tlvopt_unknown(skb, off) == 0)
+ if (ip6_tlvopt_unknown(skbp, off) == 0)
return 0;
}
break;
Destination options header.
*****************************/
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+static int ipv6_dest_hao(struct sk_buff **skbp, int optoff)
+{
+ struct sk_buff *skb = *skbp;
+ struct ipv6_destopt_hao *hao;
+ struct inet6_skb_parm *opt = IP6CB(skb);
+ struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+ struct in6_addr tmp_addr;
+ int ret;
+
+ if (opt->dsthao) {
+ LIMIT_NETDEBUG(KERN_DEBUG "hao duplicated\n");
+ goto discard;
+ }
+ opt->dsthao = opt->dst1;
+ opt->dst1 = 0;
+
+ hao = (struct ipv6_destopt_hao *)(skb_network_header(skb) + optoff);
+
+ if (hao->length != 16) {
+ LIMIT_NETDEBUG(
+ KERN_DEBUG "hao invalid option length = %d\n", hao->length);
+ goto discard;
+ }
+
+ if (!(ipv6_addr_type(&hao->addr) & IPV6_ADDR_UNICAST)) {
+ LIMIT_NETDEBUG(
+ KERN_DEBUG "hao is not an unicast addr: " NIP6_FMT "\n", NIP6(hao->addr));
+ goto discard;
+ }
+
+ ret = xfrm6_input_addr(skb, (xfrm_address_t *)&ipv6h->daddr,
+ (xfrm_address_t *)&hao->addr, IPPROTO_DSTOPTS);
+ if (unlikely(ret < 0))
+ goto discard;
+
+ if (skb_cloned(skb)) {
+ struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
+ struct inet6_skb_parm *opt2;
+
+ if (skb2 == NULL)
+ goto discard;
+
+ opt2 = IP6CB(skb2);
+ memcpy(opt2, opt, sizeof(*opt2));
+
+ kfree_skb(skb);
+
+ /* update all variable using below by copied skbuff */
+ *skbp = skb = skb2;
+ hao = (struct ipv6_destopt_hao *)(skb_network_header(skb2) +
+ optoff);
+ ipv6h = ipv6_hdr(skb2);
+ }
+
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
+ skb->ip_summed = CHECKSUM_NONE;
+
+ ipv6_addr_copy(&tmp_addr, &ipv6h->saddr);
+ ipv6_addr_copy(&ipv6h->saddr, &hao->addr);
+ ipv6_addr_copy(&hao->addr, &tmp_addr);
+
+ if (skb->tstamp.tv64 == 0)
+ __net_timestamp(skb);
+
+ return 1;
+
+ discard:
+ kfree_skb(skb);
+ return 0;
+}
+#endif
+
static struct tlvtype_proc tlvprocdestopt_lst[] = {
- /* No destination options are defined now */
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ {
+ .type = IPV6_TLV_HAO,
+ .func = ipv6_dest_hao,
+ },
+#endif
{-1, NULL}
};
{
struct sk_buff *skb = *skbp;
struct inet6_skb_parm *opt = IP6CB(skb);
-
- if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) ||
- !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ __u16 dstbuf;
+#endif
+ struct dst_entry *dst;
+
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
+ !pskb_may_pull(skb, (skb_transport_offset(skb) +
+ ((skb_transport_header(skb)[1] + 1) << 3)))) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
}
- opt->lastopt = skb->h.raw - skb->nh.raw;
- opt->dst1 = skb->h.raw - skb->nh.raw;
-
- if (ip6_parse_tlv(tlvprocdestopt_lst, skb)) {
- skb->h.raw += ((skb->h.raw[1]+1)<<3);
+ opt->lastopt = opt->dst1 = skb_network_header_len(skb);
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ dstbuf = opt->dst1;
+#endif
+
+ dst = dst_clone(skb->dst);
+ if (ip6_parse_tlv(tlvprocdestopt_lst, skbp)) {
+ dst_release(dst);
+ skb = *skbp;
+ skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
+ opt = IP6CB(skb);
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ opt->nhoff = dstbuf;
+#else
opt->nhoff = opt->dst1;
+#endif
return 1;
}
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS_BH(ip6_dst_idev(dst), IPSTATS_MIB_INHDRERRORS);
+ dst_release(dst);
return -1;
}
{
struct sk_buff *skb = *skbp;
struct inet6_skb_parm *opt = IP6CB(skb);
- struct in6_addr *addr;
+ struct in6_addr *addr = NULL;
struct in6_addr daddr;
+ struct inet6_dev *idev;
int n, i;
-
struct ipv6_rt_hdr *hdr;
struct rt0_hdr *rthdr;
+ int accept_source_route = ipv6_devconf.accept_source_route;
+
+ idev = in6_dev_get(skb->dev);
+ if (idev) {
+ if (accept_source_route > idev->cnf.accept_source_route)
+ accept_source_route = idev->cnf.accept_source_route;
+ in6_dev_put(idev);
+ }
- if (!pskb_may_pull(skb, (skb->h.raw-skb->data)+8) ||
- !pskb_may_pull(skb, (skb->h.raw-skb->data)+((skb->h.raw[1]+1)<<3))) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ if (!pskb_may_pull(skb, skb_transport_offset(skb) + 8) ||
+ !pskb_may_pull(skb, (skb_transport_offset(skb) +
+ ((skb_transport_header(skb)[1] + 1) << 3)))) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INHDRERRORS);
kfree_skb(skb);
return -1;
}
- hdr = (struct ipv6_rt_hdr *) skb->h.raw;
+ hdr = (struct ipv6_rt_hdr *)skb_transport_header(skb);
- if (ipv6_addr_is_multicast(&skb->nh.ipv6h->daddr) ||
+ if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ||
skb->pkt_type != PACKET_HOST) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INADDRERRORS);
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
}
looped_back:
if (hdr->segments_left == 0) {
- opt->lastopt = skb->h.raw - skb->nh.raw;
- opt->srcrt = skb->h.raw - skb->nh.raw;
- skb->h.raw += (hdr->hdrlen + 1) << 3;
+ switch (hdr->type) {
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ case IPV6_SRCRT_TYPE_2:
+ /* Silently discard type 2 header unless it was
+ * processed by own
+ */
+ if (!addr) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INADDRERRORS);
+ kfree_skb(skb);
+ return -1;
+ }
+ break;
+#endif
+ default:
+ break;
+ }
+
+ opt->lastopt = opt->srcrt = skb_network_header_len(skb);
+ skb->transport_header += (hdr->hdrlen + 1) << 3;
opt->dst0 = opt->dst1;
opt->dst1 = 0;
- opt->nhoff = (&hdr->nexthdr) - skb->nh.raw;
+ opt->nhoff = (&hdr->nexthdr) - skb_network_header(skb);
return 1;
}
- if (hdr->type != IPV6_SRCRT_TYPE_0) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
- icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->type) - skb->nh.raw);
- return -1;
- }
-
- if (hdr->hdrlen & 0x01) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
- icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->hdrlen) - skb->nh.raw);
- return -1;
+ switch (hdr->type) {
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ case IPV6_SRCRT_TYPE_2:
+ if (accept_source_route < 0)
+ goto unknown_rh;
+ /* Silently discard invalid RTH type 2 */
+ if (hdr->hdrlen != 2 || hdr->segments_left != 1) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INHDRERRORS);
+ kfree_skb(skb);
+ return -1;
+ }
+ break;
+#endif
+ default:
+ goto unknown_rh;
}
/*
n = hdr->hdrlen >> 1;
if (hdr->segments_left > n) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
- icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, (&hdr->segments_left) - skb->nh.raw);
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INHDRERRORS);
+ icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
+ ((&hdr->segments_left) -
+ skb_network_header(skb)));
return -1;
}
*/
if (skb_cloned(skb)) {
struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
- kfree_skb(skb);
/* the copy is a forwarded packet */
if (skb2 == NULL) {
- IP6_INC_STATS_BH(IPSTATS_MIB_OUTDISCARDS);
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_OUTDISCARDS);
+ kfree_skb(skb);
return -1;
}
+ kfree_skb(skb);
*skbp = skb = skb2;
opt = IP6CB(skb2);
- hdr = (struct ipv6_rt_hdr *) skb2->h.raw;
+ hdr = (struct ipv6_rt_hdr *)skb_transport_header(skb2);
}
- if (skb->ip_summed == CHECKSUM_HW)
+ if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->ip_summed = CHECKSUM_NONE;
i = n - --hdr->segments_left;
addr = rthdr->addr;
addr += i - 1;
+ switch (hdr->type) {
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ case IPV6_SRCRT_TYPE_2:
+ if (xfrm6_input_addr(skb, (xfrm_address_t *)addr,
+ (xfrm_address_t *)&ipv6_hdr(skb)->saddr,
+ IPPROTO_ROUTING) < 0) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INADDRERRORS);
+ kfree_skb(skb);
+ return -1;
+ }
+ if (!ipv6_chk_home_addr(addr)) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INADDRERRORS);
+ kfree_skb(skb);
+ return -1;
+ }
+ break;
+#endif
+ default:
+ break;
+ }
+
if (ipv6_addr_is_multicast(addr)) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INADDRERRORS);
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INADDRERRORS);
kfree_skb(skb);
return -1;
}
ipv6_addr_copy(&daddr, addr);
- ipv6_addr_copy(addr, &skb->nh.ipv6h->daddr);
- ipv6_addr_copy(&skb->nh.ipv6h->daddr, &daddr);
+ ipv6_addr_copy(addr, &ipv6_hdr(skb)->daddr);
+ ipv6_addr_copy(&ipv6_hdr(skb)->daddr, &daddr);
dst_release(xchg(&skb->dst, NULL));
ip6_route_input(skb);
if (skb->dst->error) {
- skb_push(skb, skb->data - skb->nh.raw);
+ skb_push(skb, skb->data - skb_network_header(skb));
dst_input(skb);
return -1;
}
if (skb->dst->dev->flags&IFF_LOOPBACK) {
- if (skb->nh.ipv6h->hop_limit <= 1) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ if (ipv6_hdr(skb)->hop_limit <= 1) {
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst),
+ IPSTATS_MIB_INHDRERRORS);
icmpv6_send(skb, ICMPV6_TIME_EXCEED, ICMPV6_EXC_HOPLIMIT,
0, skb->dev);
kfree_skb(skb);
return -1;
}
- skb->nh.ipv6h->hop_limit--;
+ ipv6_hdr(skb)->hop_limit--;
goto looped_back;
}
- skb_push(skb, skb->data - skb->nh.raw);
+ skb_push(skb, skb->data - skb_network_header(skb));
dst_input(skb);
return -1;
+
+unknown_rh:
+ IP6_INC_STATS_BH(ip6_dst_idev(skb->dst), IPSTATS_MIB_INHDRERRORS);
+ icmpv6_param_prob(skb, ICMPV6_HDR_FIELD,
+ (&hdr->type) - skb_network_header(skb));
+ return -1;
}
static struct inet6_protocol rthdr_protocol = {
printk(KERN_ERR "ipv6_rthdr_init: Could not register protocol\n");
};
+/**********************************
+ Hop-by-hop options.
+ **********************************/
+
/*
- This function inverts received rthdr.
- NOTE: specs allow to make it automatically only if
- packet authenticated.
-
- I will not discuss it here (though, I am really pissed off at
- this stupid requirement making rthdr idea useless)
-
- Actually, it creates severe problems for us.
- Embryonic requests has no associated sockets,
- so that user have no control over it and
- cannot not only to set reply options, but
- even to know, that someone wants to connect
- without success. :-(
-
- For now we need to test the engine, so that I created
- temporary (or permanent) backdoor.
- If listening socket set IPV6_RTHDR to 2, then we invert header.
- --ANK (980729)
+ * Note: we cannot rely on skb->dst before we assign it in ip6_route_input().
*/
-
-struct ipv6_txoptions *
-ipv6_invert_rthdr(struct sock *sk, struct ipv6_rt_hdr *hdr)
+static inline struct inet6_dev *ipv6_skb_idev(struct sk_buff *skb)
{
- /* Received rthdr:
-
- [ H1 -> H2 -> ... H_prev ] daddr=ME
-
- Inverted result:
- [ H_prev -> ... -> H1 ] daddr =sender
-
- Note, that IP output engine will rewrite this rthdr
- by rotating it left by one addr.
- */
-
- int n, i;
- struct rt0_hdr *rthdr = (struct rt0_hdr*)hdr;
- struct rt0_hdr *irthdr;
- struct ipv6_txoptions *opt;
- int hdrlen = ipv6_optlen(hdr);
-
- if (hdr->segments_left ||
- hdr->type != IPV6_SRCRT_TYPE_0 ||
- hdr->hdrlen & 0x01)
- return NULL;
-
- n = hdr->hdrlen >> 1;
- opt = sock_kmalloc(sk, sizeof(*opt) + hdrlen, GFP_ATOMIC);
- if (opt == NULL)
- return NULL;
- memset(opt, 0, sizeof(*opt));
- opt->tot_len = sizeof(*opt) + hdrlen;
- opt->srcrt = (void*)(opt+1);
- opt->opt_nflen = hdrlen;
-
- memcpy(opt->srcrt, hdr, sizeof(*hdr));
- irthdr = (struct rt0_hdr*)opt->srcrt;
- irthdr->reserved = 0;
- opt->srcrt->segments_left = n;
- for (i=0; i<n; i++)
- memcpy(irthdr->addr+i, rthdr->addr+(n-1-i), 16);
- return opt;
+ return skb->dst ? ip6_dst_idev(skb->dst) : __in6_dev_get(skb->dev);
}
-EXPORT_SYMBOL_GPL(ipv6_invert_rthdr);
-
-/**********************************
- Hop-by-hop options.
- **********************************/
-
/* Router Alert as of RFC 2711 */
-static int ipv6_hop_ra(struct sk_buff *skb, int optoff)
+static int ipv6_hop_ra(struct sk_buff **skbp, int optoff)
{
- if (skb->nh.raw[optoff+1] == 2) {
+ struct sk_buff *skb = *skbp;
+ const unsigned char *nh = skb_network_header(skb);
+
+ if (nh[optoff + 1] == 2) {
IP6CB(skb)->ra = optoff;
return 1;
}
LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_ra: wrong RA length %d\n",
- skb->nh.raw[optoff+1]);
+ nh[optoff + 1]);
kfree_skb(skb);
return 0;
}
/* Jumbo payload */
-static int ipv6_hop_jumbo(struct sk_buff *skb, int optoff)
+static int ipv6_hop_jumbo(struct sk_buff **skbp, int optoff)
{
+ struct sk_buff *skb = *skbp;
+ const unsigned char *nh = skb_network_header(skb);
u32 pkt_len;
- if (skb->nh.raw[optoff+1] != 4 || (optoff&3) != 2) {
+ if (nh[optoff + 1] != 4 || (optoff & 3) != 2) {
LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_jumbo: wrong jumbo opt length/alignment %d\n",
- skb->nh.raw[optoff+1]);
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ nh[optoff+1]);
+ IP6_INC_STATS_BH(ipv6_skb_idev(skb),
+ IPSTATS_MIB_INHDRERRORS);
goto drop;
}
- pkt_len = ntohl(*(u32*)(skb->nh.raw+optoff+2));
+ pkt_len = ntohl(*(__be32 *)(nh + optoff + 2));
if (pkt_len <= IPV6_MAXPLEN) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ IP6_INC_STATS_BH(ipv6_skb_idev(skb), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, optoff+2);
return 0;
}
- if (skb->nh.ipv6h->payload_len) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INHDRERRORS);
+ if (ipv6_hdr(skb)->payload_len) {
+ IP6_INC_STATS_BH(ipv6_skb_idev(skb), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, optoff);
return 0;
}
if (pkt_len > skb->len - sizeof(struct ipv6hdr)) {
- IP6_INC_STATS_BH(IPSTATS_MIB_INTRUNCATEDPKTS);
+ IP6_INC_STATS_BH(ipv6_skb_idev(skb), IPSTATS_MIB_INTRUNCATEDPKTS);
goto drop;
}
{ -1, }
};
-int ipv6_parse_hopopts(struct sk_buff *skb)
+int ipv6_parse_hopopts(struct sk_buff **skbp)
{
+ struct sk_buff *skb = *skbp;
struct inet6_skb_parm *opt = IP6CB(skb);
/*
- * skb->nh.raw is equal to skb->data, and
- * skb->h.raw - skb->nh.raw is always equal to
+ * skb_network_header(skb) is equal to skb->data, and
+ * skb_network_header_len(skb) is always equal to
* sizeof(struct ipv6hdr) by definition of
* hop-by-hop options.
*/
if (!pskb_may_pull(skb, sizeof(struct ipv6hdr) + 8) ||
- !pskb_may_pull(skb, sizeof(struct ipv6hdr) + ((skb->h.raw[1] + 1) << 3))) {
+ !pskb_may_pull(skb, (sizeof(struct ipv6hdr) +
+ ((skb_transport_header(skb)[1] + 1) << 3)))) {
kfree_skb(skb);
return -1;
}
opt->hop = sizeof(struct ipv6hdr);
- if (ip6_parse_tlv(tlvprochopopt_lst, skb)) {
- skb->h.raw += (skb->h.raw[1]+1)<<3;
+ if (ip6_parse_tlv(tlvprochopopt_lst, skbp)) {
+ skb = *skbp;
+ skb->transport_header += (skb_transport_header(skb)[1] + 1) << 3;
+ opt = IP6CB(skb);
opt->nhoff = sizeof(struct ipv6hdr);
return 1;
}
int hops;
ihdr = (struct rt0_hdr *) opt;
-
+
phdr = (struct rt0_hdr *) skb_push(skb, (ihdr->rt_hdr.hdrlen + 1) << 3);
memcpy(phdr, ihdr, sizeof(struct rt0_hdr));
ipv6_push_exthdr(skb, proto, NEXTHDR_HOP, opt->hopopt);
}
+EXPORT_SYMBOL(ipv6_push_nfrag_opts);
+
void ipv6_push_frag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt, u8 *proto)
{
if (opt->dst1opt)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff