[SK_BUFF]: Introduce skb_mac_header()
For the places where we need a pointer to the mac header, it is still legal to
touch skb->mac.raw directly if just adding to, subtracting from or setting it
to another layer header.
This one also converts some more cases to skb_reset_mac_header() that my
regex missed as it had no spaces before nor after '=', ugh.
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 053147a..a3e3d9e 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -828,7 +828,8 @@
if (ifp->flags & (IFA_F_TENTATIVE|IFA_F_OPTIMISTIC)) {
if (dad) {
if (dev->type == ARPHRD_IEEE802_TR) {
- unsigned char *sadr = skb->mac.raw;
+ 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] &&
diff --git a/net/ipv6/netfilter/ip6t_LOG.c b/net/ipv6/netfilter/ip6t_LOG.c
index afaa039..fc9e51a 100644
--- a/net/ipv6/netfilter/ip6t_LOG.c
+++ b/net/ipv6/netfilter/ip6t_LOG.c
@@ -397,7 +397,7 @@
printk("MAC=");
if (skb->dev && (len = skb->dev->hard_header_len) &&
skb->mac.raw != skb->nh.raw) {
- unsigned char *p = skb->mac.raw;
+ const unsigned char *p = skb_mac_header(skb);
int i;
if (skb->dev->type == ARPHRD_SIT &&
@@ -412,7 +412,8 @@
printk(" ");
if (skb->dev->type == ARPHRD_SIT) {
- struct iphdr *iph = (struct iphdr *)skb->mac.raw;
+ const struct iphdr *iph =
+ (struct iphdr *)skb_mac_header(skb);
printk("TUNNEL=%u.%u.%u.%u->%u.%u.%u.%u ",
NIPQUAD(iph->saddr),
NIPQUAD(iph->daddr));
diff --git a/net/ipv6/netfilter/ip6t_eui64.c b/net/ipv6/netfilter/ip6t_eui64.c
index 967bed7..c267606 100644
--- a/net/ipv6/netfilter/ip6t_eui64.c
+++ b/net/ipv6/netfilter/ip6t_eui64.c
@@ -32,8 +32,8 @@
unsigned char eui64[8];
int i = 0;
- if (!(skb->mac.raw >= skb->head &&
- (skb->mac.raw + ETH_HLEN) <= skb->data) &&
+ if (!(skb_mac_header(skb) >= skb->head &&
+ (skb_mac_header(skb) + ETH_HLEN) <= skb->data) &&
offset != 0) {
*hotdrop = 1;
return 0;
diff --git a/net/ipv6/xfrm6_mode_beet.c b/net/ipv6/xfrm6_mode_beet.c
index 53cfe1a..79364b1 100644
--- a/net/ipv6/xfrm6_mode_beet.c
+++ b/net/ipv6/xfrm6_mode_beet.c
@@ -70,9 +70,9 @@
memmove(skb->data, skb->nh.raw, size);
skb->nh.raw = skb->data;
- old_mac = skb->mac.raw;
+ old_mac = skb_mac_header(skb);
skb_set_mac_header(skb, -skb->mac_len);
- memmove(skb->mac.raw, old_mac, skb->mac_len);
+ memmove(skb_mac_header(skb), old_mac, skb->mac_len);
ip6h = skb->nh.ipv6h;
ip6h->payload_len = htons(skb->len - size);
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index d2c560c..5bb0677 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -108,9 +108,9 @@
ip6ip_ecn_decapsulate(skb);
skb->protocol = htons(ETH_P_IP);
}
- old_mac = skb->mac.raw;
+ old_mac = skb_mac_header(skb);
skb_set_mac_header(skb, -skb->mac_len);
- memmove(skb->mac.raw, old_mac, skb->mac_len);
+ memmove(skb_mac_header(skb), old_mac, skb->mac_len);
skb->nh.raw = skb->data;
err = 0;
