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[SK_BUFF]: Convert skb->end to sk_buff_data_t

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Now to convert the last one, skb->data, that will allow many simplifications
and removal of some of the offset helpers.

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
2007-04-19 20:43:29 -07:00
committed by David S. Miller
parent 27a884dc3c
commit 4305b54135
15 changed files with 101 additions and 56 deletions
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23
include/linux/skbuff.h
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@@ -305,9 +305,9 @@ struct sk_buff {
sk_buff_data_t mac_header;
/* These elements must be at the end, see alloc_skb() for details. */
sk_buff_data_t tail;
sk_buff_data_t end;
unsigned char *head,
*data,
*end;
*data;
unsigned int truesize;
atomic_t users;
};
@@ -392,8 +392,20 @@ extern unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,
unsigned int to, struct ts_config *config,
struct ts_state *state);
#ifdef NET_SKBUFF_DATA_USES_OFFSET
static inline unsigned char *skb_end_pointer(const struct sk_buff *skb)
{
return skb->head + skb->end;
}
#else
static inline unsigned char *skb_end_pointer(const struct sk_buff *skb)
{
return skb->end;
}
#endif
/* Internal */
#define skb_shinfo(SKB) ((struct skb_shared_info *)((SKB)->end))
#define skb_shinfo(SKB) ((struct skb_shared_info *)(skb_end_pointer(SKB)))
/**
* skb_queue_empty - check if a queue is empty
@@ -843,6 +855,7 @@ static inline void skb_set_tail_pointer(struct sk_buff *skb, const int offset)
{
skb->tail = skb->data + offset;
}
#endif /* NET_SKBUFF_DATA_USES_OFFSET */
/*
@@ -872,7 +885,7 @@ static inline unsigned char *skb_put(struct sk_buff *skb, unsigned int len)
SKB_LINEAR_ASSERT(skb);
skb->tail += len;
skb->len += len;
if (unlikely(skb_tail_pointer(skb) > skb->end))
if (unlikely(skb->tail > skb->end))
skb_over_panic(skb, len, current_text_addr());
return tmp;
}
@@ -968,7 +981,7 @@ static inline int skb_headroom(const struct sk_buff *skb)
*/
static inline int skb_tailroom(const struct sk_buff *skb)
{
return skb_is_nonlinear(skb) ? 0 : skb->end - skb_tail_pointer(skb);
return skb_is_nonlinear(skb) ? 0 : skb->end - skb->tail;
}
/**