return -EINVAL;
}
+EXPORT_SYMBOL(ndisc_mc_map);
+
static u32 ndisc_hash(const void *pkey, const struct net_device *dev)
{
const u32 *p32 = pkey;
security_sk_classify_flow(ndisc_socket->sk, fl);
}
-static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
- struct in6_addr *daddr, struct in6_addr *solicited_addr,
- int router, int solicited, int override, int inc_opt)
+static void __ndisc_send(struct net_device *dev,
+ struct neighbour *neigh,
+ struct in6_addr *daddr, struct in6_addr *saddr,
+ struct icmp6hdr *icmp6h, struct in6_addr *target,
+ int llinfo, int icmp6_mib_outnd)
{
- struct in6_addr tmpaddr;
- struct inet6_ifaddr *ifp;
- struct inet6_dev *idev;
struct flowi fl;
- struct dst_entry* dst;
+ struct dst_entry *dst;
struct sock *sk = ndisc_socket->sk;
- struct in6_addr *src_addr;
- struct nd_msg *msg;
- int len;
struct sk_buff *skb;
+ struct icmp6hdr *hdr;
+ struct inet6_dev *idev;
+ int len;
int err;
+ u8 *opt;
- len = sizeof(struct icmp6hdr) + sizeof(struct in6_addr);
-
- /* for anycast or proxy, solicited_addr != src_addr */
- ifp = ipv6_get_ifaddr(solicited_addr, dev, 1);
- if (ifp) {
- src_addr = solicited_addr;
- in6_ifa_put(ifp);
- } else {
- if (ipv6_dev_get_saddr(dev, daddr, &tmpaddr))
- return;
- src_addr = &tmpaddr;
- }
-
- ndisc_flow_init(&fl, NDISC_NEIGHBOUR_ADVERTISEMENT, src_addr, daddr,
+ ndisc_flow_init(&fl, icmp6h->icmp6_type, saddr, daddr,
dev->ifindex);
dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output);
if (err < 0)
return;
- if (inc_opt) {
- if (dev->addr_len)
- len += ndisc_opt_addr_space(dev);
- else
- inc_opt = 0;
- }
+ if (!dev->addr_len)
+ llinfo = 0;
+
+ len = sizeof(struct icmp6hdr) + (target ? sizeof(*target) : 0);
+ if (llinfo)
+ len += ndisc_opt_addr_space(dev);
skb = sock_alloc_send_skb(sk,
(MAX_HEADER + sizeof(struct ipv6hdr) +
len + LL_RESERVED_SPACE(dev)),
1, &err);
-
- if (skb == NULL) {
+ if (!skb) {
ND_PRINTK0(KERN_ERR
- "ICMPv6 NA: %s() failed to allocate an skb.\n",
+ "ICMPv6 ND: %s() failed to allocate an skb.\n",
__FUNCTION__);
dst_release(dst);
return;
}
skb_reserve(skb, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, skb, dev, src_addr, daddr, IPPROTO_ICMPV6, len);
-
- msg = (struct nd_msg *)skb_put(skb, len);
- skb->h.raw = (unsigned char*)msg;
+ ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
- msg->icmph.icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT;
- msg->icmph.icmp6_code = 0;
- msg->icmph.icmp6_cksum = 0;
+ skb->transport_header = skb->tail;
+ skb_put(skb, len);
- msg->icmph.icmp6_unused = 0;
- msg->icmph.icmp6_router = router;
- msg->icmph.icmp6_solicited = solicited;
- msg->icmph.icmp6_override = override;
+ hdr = (struct icmp6hdr *)skb_transport_header(skb);
+ memcpy(hdr, icmp6h, sizeof(*hdr));
- /* Set the target address. */
- ipv6_addr_copy(&msg->target, solicited_addr);
+ opt = skb_transport_header(skb) + sizeof(struct icmp6hdr);
+ if (target) {
+ ipv6_addr_copy((struct in6_addr *)opt, target);
+ opt += sizeof(*target);
+ }
- if (inc_opt)
- ndisc_fill_addr_option(msg->opt, ND_OPT_TARGET_LL_ADDR, dev->dev_addr,
+ if (llinfo)
+ ndisc_fill_addr_option(opt, llinfo, dev->dev_addr,
dev->addr_len, dev->type);
- /* checksum */
- msg->icmph.icmp6_cksum = csum_ipv6_magic(src_addr, daddr, len,
- IPPROTO_ICMPV6,
- csum_partial((__u8 *) msg,
- len, 0));
+ hdr->icmp6_cksum = csum_ipv6_magic(saddr, daddr, len,
+ IPPROTO_ICMPV6,
+ csum_partial((__u8 *) hdr,
+ len, 0));
skb->dst = dst;
+
idev = in6_dev_get(dst->dev);
IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
+
err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
if (!err) {
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS);
+ ICMP6_INC_STATS(idev, icmp6_mib_outnd);
ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
}
in6_dev_put(idev);
}
+static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh,
+ struct in6_addr *daddr, struct in6_addr *solicited_addr,
+ int router, int solicited, int override, int inc_opt)
+{
+ struct in6_addr tmpaddr;
+ struct inet6_ifaddr *ifp;
+ struct in6_addr *src_addr;
+ struct icmp6hdr icmp6h = {
+ .icmp6_type = NDISC_NEIGHBOUR_ADVERTISEMENT,
+ };
+
+ /* for anycast or proxy, solicited_addr != src_addr */
+ ifp = ipv6_get_ifaddr(solicited_addr, dev, 1);
+ if (ifp) {
+ src_addr = solicited_addr;
+ if (ifp->flags & IFA_F_OPTIMISTIC)
+ override = 0;
+ in6_ifa_put(ifp);
+ } else {
+ if (ipv6_dev_get_saddr(dev, daddr, &tmpaddr))
+ return;
+ src_addr = &tmpaddr;
+ }
+
+ icmp6h.icmp6_router = router;
+ icmp6h.icmp6_solicited = solicited;
+ icmp6h.icmp6_override = override;
+
+ __ndisc_send(dev, neigh, daddr, src_addr,
+ &icmp6h, solicited_addr,
+ inc_opt ? ND_OPT_TARGET_LL_ADDR : 0,
+ ICMP6_MIB_OUTNEIGHBORADVERTISEMENTS);
+}
+
void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh,
struct in6_addr *solicit,
struct in6_addr *daddr, struct in6_addr *saddr)
{
- struct flowi fl;
- struct dst_entry* dst;
- struct inet6_dev *idev;
- struct sock *sk = ndisc_socket->sk;
- struct sk_buff *skb;
- struct nd_msg *msg;
struct in6_addr addr_buf;
- int len;
- int err;
- int send_llinfo;
+ struct icmp6hdr icmp6h = {
+ .icmp6_type = NDISC_NEIGHBOUR_SOLICITATION,
+ };
if (saddr == NULL) {
- if (ipv6_get_lladdr(dev, &addr_buf))
+ if (ipv6_get_lladdr(dev, &addr_buf,
+ (IFA_F_TENTATIVE|IFA_F_OPTIMISTIC)))
return;
saddr = &addr_buf;
}
- ndisc_flow_init(&fl, NDISC_NEIGHBOUR_SOLICITATION, saddr, daddr,
- dev->ifindex);
-
- dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output);
- if (!dst)
- return;
-
- err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0)
- return;
-
- len = sizeof(struct icmp6hdr) + sizeof(struct in6_addr);
- send_llinfo = dev->addr_len && !ipv6_addr_any(saddr);
- if (send_llinfo)
- len += ndisc_opt_addr_space(dev);
-
- skb = sock_alloc_send_skb(sk,
- (MAX_HEADER + sizeof(struct ipv6hdr) +
- len + LL_RESERVED_SPACE(dev)),
- 1, &err);
- if (skb == NULL) {
- ND_PRINTK0(KERN_ERR
- "ICMPv6 NA: %s() failed to allocate an skb.\n",
- __FUNCTION__);
- dst_release(dst);
- return;
- }
-
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
-
- msg = (struct nd_msg *)skb_put(skb, len);
- skb->h.raw = (unsigned char*)msg;
- msg->icmph.icmp6_type = NDISC_NEIGHBOUR_SOLICITATION;
- msg->icmph.icmp6_code = 0;
- msg->icmph.icmp6_cksum = 0;
- msg->icmph.icmp6_unused = 0;
-
- /* Set the target address. */
- ipv6_addr_copy(&msg->target, solicit);
-
- if (send_llinfo)
- ndisc_fill_addr_option(msg->opt, ND_OPT_SOURCE_LL_ADDR, dev->dev_addr,
- dev->addr_len, dev->type);
-
- /* checksum */
- msg->icmph.icmp6_cksum = csum_ipv6_magic(&skb->nh.ipv6h->saddr,
- daddr, len,
- IPPROTO_ICMPV6,
- csum_partial((__u8 *) msg,
- len, 0));
- /* send it! */
- skb->dst = dst;
- idev = in6_dev_get(dst->dev);
- IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
- err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
- if (!err) {
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTNEIGHBORSOLICITS);
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
- }
-
- if (likely(idev != NULL))
- in6_dev_put(idev);
+ __ndisc_send(dev, neigh, daddr, saddr,
+ &icmp6h, solicit,
+ !ipv6_addr_any(saddr) ? ND_OPT_SOURCE_LL_ADDR : 0,
+ ICMP6_MIB_OUTNEIGHBORSOLICITS);
}
void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr,
struct in6_addr *daddr)
{
- struct flowi fl;
- struct dst_entry* dst;
- struct inet6_dev *idev;
- struct sock *sk = ndisc_socket->sk;
- struct sk_buff *skb;
- struct icmp6hdr *hdr;
- __u8 * opt;
- int len;
- int err;
-
- ndisc_flow_init(&fl, NDISC_ROUTER_SOLICITATION, saddr, daddr,
- dev->ifindex);
-
- dst = ndisc_dst_alloc(dev, NULL, daddr, ip6_output);
- if (!dst)
- return;
-
- err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0)
- return;
-
- len = sizeof(struct icmp6hdr);
- if (dev->addr_len)
- len += ndisc_opt_addr_space(dev);
-
- skb = sock_alloc_send_skb(sk,
- (MAX_HEADER + sizeof(struct ipv6hdr) +
- len + LL_RESERVED_SPACE(dev)),
- 1, &err);
- if (skb == NULL) {
- ND_PRINTK0(KERN_ERR
- "ICMPv6 RS: %s() failed to allocate an skb.\n",
- __FUNCTION__);
- dst_release(dst);
- return;
- }
-
- skb_reserve(skb, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, skb, dev, saddr, daddr, IPPROTO_ICMPV6, len);
-
- hdr = (struct icmp6hdr *)skb_put(skb, len);
- skb->h.raw = (unsigned char*)hdr;
- hdr->icmp6_type = NDISC_ROUTER_SOLICITATION;
- hdr->icmp6_code = 0;
- hdr->icmp6_cksum = 0;
- hdr->icmp6_unused = 0;
-
- opt = (u8*) (hdr + 1);
-
- if (dev->addr_len)
- ndisc_fill_addr_option(opt, ND_OPT_SOURCE_LL_ADDR, dev->dev_addr,
- dev->addr_len, dev->type);
-
- /* checksum */
- hdr->icmp6_cksum = csum_ipv6_magic(&skb->nh.ipv6h->saddr, daddr, len,
- IPPROTO_ICMPV6,
- csum_partial((__u8 *) hdr, len, 0));
+ struct icmp6hdr icmp6h = {
+ .icmp6_type = NDISC_ROUTER_SOLICITATION,
+ };
+ int send_sllao = dev->addr_len;
- /* send it! */
- skb->dst = dst;
- idev = in6_dev_get(dst->dev);
- IP6_INC_STATS(idev, IPSTATS_MIB_OUTREQUESTS);
- err = NF_HOOK(PF_INET6, NF_IP6_LOCAL_OUT, skb, NULL, dst->dev, dst_output);
- if (!err) {
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTROUTERSOLICITS);
- ICMP6_INC_STATS(idev, ICMP6_MIB_OUTMSGS);
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ /*
+ * According to section 2.2 of RFC 4429, we must not
+ * send router solicitations with a sllao from
+ * optimistic addresses, but we may send the solicitation
+ * if we don't include the sllao. So here we check
+ * if our address is optimistic, and if so, we
+ * supress the inclusion of the sllao.
+ */
+ if (send_sllao) {
+ struct inet6_ifaddr *ifp = ipv6_get_ifaddr(saddr, dev, 1);
+ if (ifp) {
+ if (ifp->flags & IFA_F_OPTIMISTIC) {
+ send_sllao = 0;
+ }
+ in6_ifa_put(ifp);
+ } else {
+ send_sllao = 0;
+ }
}
-
- if (likely(idev != NULL))
- in6_dev_put(idev);
+#endif
+ __ndisc_send(dev, NULL, daddr, saddr,
+ &icmp6h, NULL,
+ send_sllao ? ND_OPT_SOURCE_LL_ADDR : 0,
+ ICMP6_MIB_OUTROUTERSOLICITS);
}
struct in6_addr *target = (struct in6_addr *)&neigh->primary_key;
int probes = atomic_read(&neigh->probes);
- if (skb && ipv6_chk_addr(&skb->nh.ipv6h->saddr, dev, 1))
- saddr = &skb->nh.ipv6h->saddr;
+ if (skb && ipv6_chk_addr(&ipv6_hdr(skb)->saddr, dev, 1))
+ saddr = &ipv6_hdr(skb)->saddr;
if ((probes -= neigh->parms->ucast_probes) < 0) {
if (!(neigh->nud_state & NUD_VALID)) {
static void ndisc_recv_ns(struct sk_buff *skb)
{
- struct nd_msg *msg = (struct nd_msg *)skb->h.raw;
- struct in6_addr *saddr = &skb->nh.ipv6h->saddr;
- struct in6_addr *daddr = &skb->nh.ipv6h->daddr;
+ struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
+ struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
+ struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
u8 *lladdr = NULL;
- u32 ndoptlen = skb->tail - msg->opt;
+ u32 ndoptlen = skb->tail - (skb->transport_header +
+ offsetof(struct nd_msg, opt));
struct ndisc_options ndopts;
struct net_device *dev = skb->dev;
struct inet6_ifaddr *ifp;
inc = ipv6_addr_is_multicast(daddr);
if ((ifp = ipv6_get_ifaddr(&msg->target, dev, 1)) != NULL) {
- if (ifp->flags & IFA_F_TENTATIVE) {
- /* Address is tentative. If the source
- is unspecified address, it is someone
- does DAD, otherwise we ignore solicitations
- until DAD timer expires.
- */
- if (!dad)
+
+ if (ifp->flags & (IFA_F_TENTATIVE|IFA_F_OPTIMISTIC)) {
+ if (dad) {
+ if (dev->type == ARPHRD_IEEE802_TR) {
+ const unsigned char *sadr;
+ sadr = skb_mac_header(skb);
+ if (((sadr[8] ^ dev->dev_addr[0]) & 0x7f) == 0 &&
+ sadr[9] == dev->dev_addr[1] &&
+ sadr[10] == dev->dev_addr[2] &&
+ sadr[11] == dev->dev_addr[3] &&
+ sadr[12] == dev->dev_addr[4] &&
+ sadr[13] == dev->dev_addr[5]) {
+ /* looped-back to us */
+ goto out;
+ }
+ }
+
+ /*
+ * We are colliding with another node
+ * who is doing DAD
+ * so fail our DAD process
+ */
+ addrconf_dad_failure(ifp);
goto out;
- if (dev->type == ARPHRD_IEEE802_TR) {
- unsigned char *sadr = skb->mac.raw;
- if (((sadr[8] ^ dev->dev_addr[0]) & 0x7f) == 0 &&
- sadr[9] == dev->dev_addr[1] &&
- sadr[10] == dev->dev_addr[2] &&
- sadr[11] == dev->dev_addr[3] &&
- sadr[12] == dev->dev_addr[4] &&
- sadr[13] == dev->dev_addr[5]) {
- /* looped-back to us */
+ } else {
+ /*
+ * This is not a dad solicitation.
+ * If we are an optimistic node,
+ * we should respond.
+ * Otherwise, we should ignore it.
+ */
+ if (!(ifp->flags & IFA_F_OPTIMISTIC))
goto out;
- }
}
- addrconf_dad_failure(ifp);
- return;
}
idev = ifp->idev;
static void ndisc_recv_na(struct sk_buff *skb)
{
- struct nd_msg *msg = (struct nd_msg *)skb->h.raw;
- struct in6_addr *saddr = &skb->nh.ipv6h->saddr;
- struct in6_addr *daddr = &skb->nh.ipv6h->daddr;
+ struct nd_msg *msg = (struct nd_msg *)skb_transport_header(skb);
+ struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
+ struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
u8 *lladdr = NULL;
- u32 ndoptlen = skb->tail - msg->opt;
+ u32 ndoptlen = skb->tail - (skb->transport_header +
+ offsetof(struct nd_msg, opt));
struct ndisc_options ndopts;
struct net_device *dev = skb->dev;
struct inet6_ifaddr *ifp;
static void ndisc_recv_rs(struct sk_buff *skb)
{
- struct rs_msg *rs_msg = (struct rs_msg *) skb->h.raw;
+ struct rs_msg *rs_msg = (struct rs_msg *)skb_transport_header(skb);
unsigned long ndoptlen = skb->len - sizeof(*rs_msg);
struct neighbour *neigh;
struct inet6_dev *idev;
- struct in6_addr *saddr = &skb->nh.ipv6h->saddr;
+ struct in6_addr *saddr = &ipv6_hdr(skb)->saddr;
struct ndisc_options ndopts;
u8 *lladdr = NULL;
static void ndisc_router_discovery(struct sk_buff *skb)
{
- struct ra_msg *ra_msg = (struct ra_msg *) skb->h.raw;
+ struct ra_msg *ra_msg = (struct ra_msg *)skb_transport_header(skb);
struct neighbour *neigh = NULL;
struct inet6_dev *in6_dev;
struct rt6_info *rt = NULL;
__u8 * opt = (__u8 *)(ra_msg + 1);
- optlen = (skb->tail - skb->h.raw) - sizeof(struct ra_msg);
+ optlen = (skb->tail - skb->transport_header) - sizeof(struct ra_msg);
- if (!(ipv6_addr_type(&skb->nh.ipv6h->saddr) & IPV6_ADDR_LINKLOCAL)) {
+ if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) {
ND_PRINTK2(KERN_WARNING
"ICMPv6 RA: source address is not link-local.\n");
return;
pref = ICMPV6_ROUTER_PREF_MEDIUM;
#endif
- rt = rt6_get_dflt_router(&skb->nh.ipv6h->saddr, skb->dev);
+ rt = rt6_get_dflt_router(&ipv6_hdr(skb)->saddr, skb->dev);
if (rt)
neigh = rt->rt6i_nexthop;
ND_PRINTK3(KERN_DEBUG
"ICMPv6 RA: adding default router.\n");
- rt = rt6_add_dflt_router(&skb->nh.ipv6h->saddr, skb->dev, pref);
+ rt = rt6_add_dflt_router(&ipv6_hdr(skb)->saddr, skb->dev, pref);
if (rt == NULL) {
ND_PRINTK0(KERN_ERR
"ICMPv6 RA: %s() failed to add default route.\n",
*/
if (!neigh)
- neigh = __neigh_lookup(&nd_tbl, &skb->nh.ipv6h->saddr,
+ neigh = __neigh_lookup(&nd_tbl, &ipv6_hdr(skb)->saddr,
skb->dev, 1);
if (neigh) {
u8 *lladdr = NULL;
if (((struct route_info *)p)->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)
continue;
rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,
- &skb->nh.ipv6h->saddr);
+ &ipv6_hdr(skb)->saddr);
}
}
#endif
int optlen;
u8 *lladdr = NULL;
- if (!(ipv6_addr_type(&skb->nh.ipv6h->saddr) & IPV6_ADDR_LINKLOCAL)) {
+ if (!(ipv6_addr_type(&ipv6_hdr(skb)->saddr) & IPV6_ADDR_LINKLOCAL)) {
ND_PRINTK2(KERN_WARNING
"ICMPv6 Redirect: source address is not link-local.\n");
return;
}
- optlen = skb->tail - skb->h.raw;
+ optlen = skb->tail - skb->transport_header;
optlen -= sizeof(struct icmp6hdr) + 2 * sizeof(struct in6_addr);
if (optlen < 0) {
return;
}
- icmph = (struct icmp6hdr *) skb->h.raw;
+ icmph = icmp6_hdr(skb);
target = (struct in6_addr *) (icmph + 1);
dest = target + 1;
neigh = __neigh_lookup(&nd_tbl, target, skb->dev, 1);
if (neigh) {
- rt6_redirect(dest, &skb->nh.ipv6h->daddr,
- &skb->nh.ipv6h->saddr, neigh, lladdr,
+ rt6_redirect(dest, &ipv6_hdr(skb)->daddr,
+ &ipv6_hdr(skb)->saddr, neigh, lladdr,
on_link);
neigh_release(neigh);
}
dev = skb->dev;
- if (ipv6_get_lladdr(dev, &saddr_buf)) {
+ if (ipv6_get_lladdr(dev, &saddr_buf, IFA_F_TENTATIVE)) {
ND_PRINTK2(KERN_WARNING
"ICMPv6 Redirect: no link-local address on %s\n",
dev->name);
return;
}
- if (!ipv6_addr_equal(&skb->nh.ipv6h->daddr, target) &&
+ if (!ipv6_addr_equal(&ipv6_hdr(skb)->daddr, target) &&
!(ipv6_addr_type(target) & IPV6_ADDR_LINKLOCAL)) {
ND_PRINTK2(KERN_WARNING
"ICMPv6 Redirect: target address is not link-local.\n");
return;
}
- ndisc_flow_init(&fl, NDISC_REDIRECT, &saddr_buf, &skb->nh.ipv6h->saddr,
+ ndisc_flow_init(&fl, NDISC_REDIRECT, &saddr_buf, &ipv6_hdr(skb)->saddr,
dev->ifindex);
dst = ip6_route_output(NULL, &fl);
hlen = 0;
skb_reserve(buff, LL_RESERVED_SPACE(dev));
- ip6_nd_hdr(sk, buff, dev, &saddr_buf, &skb->nh.ipv6h->saddr,
+ ip6_nd_hdr(sk, buff, dev, &saddr_buf, &ipv6_hdr(skb)->saddr,
IPPROTO_ICMPV6, len);
- icmph = (struct icmp6hdr *)skb_put(buff, len);
- buff->h.raw = (unsigned char*)icmph;
+ skb_set_transport_header(buff, skb_tail_pointer(buff) - buff->data);
+ skb_put(buff, len);
+ icmph = icmp6_hdr(buff);
memset(icmph, 0, sizeof(struct icmp6hdr));
icmph->icmp6_type = NDISC_REDIRECT;
addrp = (struct in6_addr *)(icmph + 1);
ipv6_addr_copy(addrp, target);
addrp++;
- ipv6_addr_copy(addrp, &skb->nh.ipv6h->daddr);
+ ipv6_addr_copy(addrp, &ipv6_hdr(skb)->daddr);
opt = (u8*) (addrp + 1);
*(opt++) = (rd_len >> 3);
opt += 6;
- memcpy(opt, skb->nh.ipv6h, rd_len - 8);
+ memcpy(opt, ipv6_hdr(skb), rd_len - 8);
- icmph->icmp6_cksum = csum_ipv6_magic(&saddr_buf, &skb->nh.ipv6h->saddr,
+ icmph->icmp6_cksum = csum_ipv6_magic(&saddr_buf, &ipv6_hdr(skb)->saddr,
len, IPPROTO_ICMPV6,
csum_partial((u8 *) icmph, len, 0));
if (!pskb_may_pull(skb, skb->len))
return 0;
- msg = (struct nd_msg *) skb->h.raw;
+ msg = (struct nd_msg *)skb_transport_header(skb);
- __skb_push(skb, skb->data-skb->h.raw);
+ __skb_push(skb, skb->data - skb_transport_header(skb));
- if (skb->nh.ipv6h->hop_limit != 255) {
+ if (ipv6_hdr(skb)->hop_limit != 255) {
ND_PRINTK2(KERN_WARNING
"ICMPv6 NDISC: invalid hop-limit: %d\n",
- skb->nh.ipv6h->hop_limit);
+ ipv6_hdr(skb)->hop_limit);
return 0;
}
case NDISC_REDIRECT:
ndisc_redirect_rcv(skb);
break;
- };
+ }
return 0;
}
projects / linux-flexiantxendom0-3.2.10.git / blobdiff