[SK_BUFF]: Introduce ipv6_hdr(), remove skb->nh.ipv6h
Now the skb->nh union has just one member, .raw, i.e. it is just like the
skb->mac union, strange, no? I'm just leaving it like that till the transport
layer is done with, when we'll rename skb->mac.raw to skb->mac_header (or
->mac_header_offset?), ditto for ->{h,nh}.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index a3e3d9e..00feb4c 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -598,7 +598,7 @@
dev->addr_len, dev->type);
/* checksum */
- msg->icmph.icmp6_cksum = csum_ipv6_magic(&skb->nh.ipv6h->saddr,
+ msg->icmph.icmp6_cksum = csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
daddr, len,
IPPROTO_ICMPV6,
csum_partial((__u8 *) msg,
@@ -697,7 +697,7 @@
dev->addr_len, dev->type);
/* checksum */
- hdr->icmp6_cksum = csum_ipv6_magic(&skb->nh.ipv6h->saddr, daddr, len,
+ hdr->icmp6_cksum = csum_ipv6_magic(&ipv6_hdr(skb)->saddr, daddr, len,
IPPROTO_ICMPV6,
csum_partial((__u8 *) hdr, len, 0));
@@ -736,8 +736,8 @@
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)) {
@@ -761,8 +761,8 @@
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 in6_addr *saddr = &ipv6_hdr(skb)->saddr;
+ struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
u8 *lladdr = NULL;
u32 ndoptlen = skb->tail - msg->opt;
struct ndisc_options ndopts;
@@ -939,8 +939,8 @@
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 in6_addr *saddr = &ipv6_hdr(skb)->saddr;
+ struct in6_addr *daddr = &ipv6_hdr(skb)->daddr;
u8 *lladdr = NULL;
u32 ndoptlen = skb->tail - msg->opt;
struct ndisc_options ndopts;
@@ -1044,7 +1044,7 @@
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;
@@ -1110,7 +1110,7 @@
optlen = (skb->tail - skb->h.raw) - 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;
@@ -1176,7 +1176,7 @@
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;
@@ -1191,7 +1191,7 @@
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",
@@ -1263,7 +1263,7 @@
*/
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;
@@ -1292,7 +1292,7 @@
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
@@ -1351,7 +1351,7 @@
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;
@@ -1416,8 +1416,8 @@
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);
}
@@ -1453,14 +1453,14 @@
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);
@@ -1515,7 +1515,7 @@
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);
@@ -1531,7 +1531,7 @@
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);
@@ -1552,9 +1552,9 @@
*(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));
@@ -1588,10 +1588,10 @@
__skb_push(skb, skb->data-skb->h.raw);
- 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;
}