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[SK_BUFF]: Introduce skb_transport_header(skb)

Browse source 
For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-04-25 18:04:18 -07:00 • committed by David S. Miller
commit 9c70220b73
42 changed files with 129 additions and 102 deletions
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19
include/linux/dccp.h
View file

@ -260,19 +260,20 @@ enum {
static inline struct dccp_hdr *dccp_hdr(const struct sk_buff *skb)
{
return (struct dccp_hdr *)skb->h.raw;
return (struct dccp_hdr *)skb_transport_header(skb);
}
static inline struct dccp_hdr *dccp_zeroed_hdr(struct sk_buff *skb, int headlen)
{
skb_push(skb, headlen);
skb_reset_transport_header(skb);
return memset(skb->h.raw, 0, headlen);
return memset(skb_transport_header(skb), 0, headlen);
}
static inline struct dccp_hdr_ext *dccp_hdrx(const struct sk_buff *skb)
{
return (struct dccp_hdr_ext *)(skb->h.raw + sizeof(struct dccp_hdr));
return (struct dccp_hdr_ext *)(skb_transport_header(skb) +
sizeof(struct dccp_hdr));
}
static inline unsigned int __dccp_basic_hdr_len(const struct dccp_hdr *dh)
@ -301,12 +302,14 @@ static inline __u64 dccp_hdr_seq(const struct sk_buff *skb)
static inline struct dccp_hdr_request *dccp_hdr_request(struct sk_buff *skb)
{
return (struct dccp_hdr_request *)(skb->h.raw + dccp_basic_hdr_len(skb));
return (struct dccp_hdr_request *)(skb_transport_header(skb) +
dccp_basic_hdr_len(skb));
}
static inline struct dccp_hdr_ack_bits *dccp_hdr_ack_bits(const struct sk_buff *skb)
{
return (struct dccp_hdr_ack_bits *)(skb->h.raw + dccp_basic_hdr_len(skb));
return (struct dccp_hdr_ack_bits *)(skb_transport_header(skb) +
dccp_basic_hdr_len(skb));
}
static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb)
@ -317,12 +320,14 @@ static inline u64 dccp_hdr_ack_seq(const struct sk_buff *skb)
static inline struct dccp_hdr_response *dccp_hdr_response(struct sk_buff *skb)
{
return (struct dccp_hdr_response *)(skb->h.raw + dccp_basic_hdr_len(skb));
return (struct dccp_hdr_response *)(skb_transport_header(skb) +
dccp_basic_hdr_len(skb));
}
static inline struct dccp_hdr_reset *dccp_hdr_reset(struct sk_buff *skb)
{
return (struct dccp_hdr_reset *)(skb->h.raw + dccp_basic_hdr_len(skb));
return (struct dccp_hdr_reset *)(skb_transport_header(skb) +
dccp_basic_hdr_len(skb));
}
static inline unsigned int __dccp_hdr_len(const struct dccp_hdr *dh)