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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-19 15:33:04 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:24:41 -0700
commit98e399f82ab3a6d863d1d4a7ea48925cc91c830e (patch)
tree5f84043aeec1ec27c2e8e6cc25b5d2e6c3d07343 /include/linux
parent31713c333ddbb66d694829082620b69b71c4b09a (diff)
[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>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/if_ether.h2
-rw-r--r--include/linux/if_tr.h2
-rw-r--r--include/linux/if_vlan.h2
-rw-r--r--include/linux/netfilter_bridge/ebt_802_3.h2
-rw-r--r--include/linux/skbuff.h10
5 files changed, 14 insertions, 4 deletions
diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index ab08f35cbc3..f6863fbcf33 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -112,7 +112,7 @@ struct ethhdr {
static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
{
- return (struct ethhdr *)skb->mac.raw;
+ return (struct ethhdr *)skb_mac_header(skb);
}
#ifdef CONFIG_SYSCTL
diff --git a/include/linux/if_tr.h b/include/linux/if_tr.h
index 2f94cf2c7ab..046e9d95ba9 100644
--- a/include/linux/if_tr.h
+++ b/include/linux/if_tr.h
@@ -47,7 +47,7 @@ struct trh_hdr {
static inline struct trh_hdr *tr_hdr(const struct sk_buff *skb)
{
- return (struct trh_hdr *)skb->mac.raw;
+ return (struct trh_hdr *)skb_mac_header(skb);
}
#ifdef CONFIG_SYSCTL
extern struct ctl_table tr_table[];
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index d103580c72d..544490d9d0b 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -51,7 +51,7 @@ struct vlan_ethhdr {
static inline struct vlan_ethhdr *vlan_eth_hdr(const struct sk_buff *skb)
{
- return (struct vlan_ethhdr *)skb->mac.raw;
+ return (struct vlan_ethhdr *)skb_mac_header(skb);
}
struct vlan_hdr {
diff --git a/include/linux/netfilter_bridge/ebt_802_3.h b/include/linux/netfilter_bridge/ebt_802_3.h
index 07f044ff1a6..a11b0c2017f 100644
--- a/include/linux/netfilter_bridge/ebt_802_3.h
+++ b/include/linux/netfilter_bridge/ebt_802_3.h
@@ -54,7 +54,7 @@ struct ebt_802_3_hdr {
static inline struct ebt_802_3_hdr *ebt_802_3_hdr(const struct sk_buff *skb)
{
- return (struct ebt_802_3_hdr *)skb->mac.raw;
+ return (struct ebt_802_3_hdr *)skb_mac_header(skb);
}
#endif
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 43ab6cbf844..dff81af454b 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -960,6 +960,16 @@ static inline void skb_reserve(struct sk_buff *skb, int len)
skb->tail += len;
}
+static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
+{
+ return skb->mac.raw;
+}
+
+static inline int skb_mac_header_was_set(const struct sk_buff *skb)
+{
+ return skb->mac.raw != NULL;
+}
+
static inline void skb_reset_mac_header(struct sk_buff *skb)
{
skb->mac.raw = skb->data;