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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2008-03-28 03:43:41 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-28 03:43:41 +0300 |
| commit | 0dde3e16485dca16eb682dd59da1a598bf62e284 (patch) | |
| tree | 9b3f3f1b54286ecf62e3101de104915a315a53c7 /net | |
| parent | 4f95165d4bf6369d57052d60cc0266c569c6b077 (diff) | |
| download | linux-0dde3e16485dca16eb682dd59da1a598bf62e284.tar.xz | |
[NET]: uninline skb_put, de-bloats a lot
Allyesconfig (v2.6.24-mm1):
~500 files changed
...
869 funcs, 198 +, 111003 -, diff: -110805 --- skb_put
skb_put | +104
Without number of debug related CONFIGs (v2.6.25-rc2-mm1):
-60744 855 funcs, 861 +, 61605 -, diff: -60744 --- skb_put
skb_put | +57
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/skbuff.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 0d0fd28a9041..3402eca768f8 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -857,6 +857,27 @@ free_skb: return err; } +/** + * skb_put - add data to a buffer + * @skb: buffer to use + * @len: amount of data to add + * + * This function extends the used data area of the buffer. If this would + * exceed the total buffer size the kernel will panic. A pointer to the + * first byte of the extra data is returned. + */ +unsigned char *skb_put(struct sk_buff *skb, unsigned int len) +{ + unsigned char *tmp = skb_tail_pointer(skb); + SKB_LINEAR_ASSERT(skb); + skb->tail += len; + skb->len += len; + if (unlikely(skb->tail > skb->end)) + skb_over_panic(skb, len, __builtin_return_address(0)); + return tmp; +} +EXPORT_SYMBOL(skb_put); + /* Trims skb to length len. It can change skb pointers. */ |