[NET]: Implement SKB fast cloning.

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Protocols that make extensive use of SKB cloning,
for example TCP, eat at least 2 allocations per
packet sent as a result.

To cut the kmalloc() count in half, we implement
a pre-allocation scheme wherein we allocate
2 sk_buff objects in advance, then use a simple
reference count to free up the memory at the
correct time.

Based upon an initial patch by Thomas Graf and
suggestions from Herbert Xu.

Signed-off-by: David S. Miller <davem@davemloft.net>

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David S. Miller 2005-08-17 14:57:30 -07:00 • committed by David S. Miller

parent e92ae93a8a

commit d179cd1292

4 changed files with 98 additions and 16 deletions

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26

include/linux/skbuff.h

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