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authorDavid S. Miller <davem@davemloft.net>2018-06-26 11:33:04 +0900
committerDavid S. Miller <davem@davemloft.net>2018-06-26 11:33:04 +0900
commit7e55052783fd3a9202e9f7c4c480629a7270645f (patch)
tree641f6811f085e35b7f876685e0dbc506defce983 /net/ipv4/tcp_input.c
parentMerge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net (diff)
parentnet: Convert NAPI gro list into a small hash table. (diff)
downloadlinux-dev-7e55052783fd3a9202e9f7c4c480629a7270645f.tar.xz
linux-dev-7e55052783fd3a9202e9f7c4c480629a7270645f.zip
Merge branch 'NAPI-gro-hash'
Convert GRO receive over to hash table. When many parallel flows are present and being received on the same RX queue, GRO processing can become expensive because each incoming frame must traverse the per-NAPI GRO list at each protocol layer of GRO receive (eth --> ipv{4,6} --> tcp). Use the already computed hash to chain these SKBs in a hash table instead of a simple list. The first patch makes the GRO list a true list_head. The second patch implements the hash table. This series patches basic testing and I added some diagnostics to make sure we really were aggregating GRO frames :-) Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
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