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authorDavid S. Miller <davem@davemloft.net>2005-08-17 14:57:30 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 16:01:54 -0700
commitd179cd12928443f3ec29cfbc3567439644bd0afc (patch)
tree0bfc57e73f0bf9f7bb9d5c8ce7d3d5afe550f94e /net/dccp
parente92ae93a8aa66aea12935420cb22d4df1c18d023 (diff)
[NET]: Implement SKB fast cloning.
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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