Erez Shitrit a44878d100 IB/ipoib: Use one linear skb in RX flow ... The current code in the RX flow uses two sg entries for each incoming packet, the first one was for the IB headers and the second for the rest of the data, that causes two dma map/unmap and two allocations, and few more actions that were done at the data path. Use only one linear skb on each incoming packet, for the data (IB headers and payload), that reduces the packet processing in the data-path (only one skb, no frags, the first frag was not used anyway, less memory allocations) and the dma handling (only one dma map/unmap over each incoming packet instead of two map/unmap per each incoming packet). After commit 73d3fe6d1c ("gro: fix aggregation for skb using frag_list") from Eric Dumazet, we will get full aggregation for large packets. When running bandwidth tests before and after the (over the card's numa node), using "netperf -H 1.1.1.3 -T -t TCP_STREAM", the results before are ~12Gbs before and after ~16Gbs on my setup (Mellanox's ConnectX3). Signed-off-by: Erez Shitrit <erezsh@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>		2015-04-15 16:06:18 -04:00
..
core	IB/uverbs: Prevent integer overflow in ib_umem_get address arithmetic	2015-04-02 09:53:59 -07:00
hw	Merge branch 'iocb' into for-davem	2015-04-09 00:01:38 -04:00
ulp	IB/ipoib: Use one linear skb in RX flow	2015-04-15 16:06:18 -04:00
Kconfig	IB/core: Implement support for MMU notifiers regarding on demand paging regions	2014-12-15 18:13:36 -08:00
Makefile	IB: Allow build of hw/ and ulp/ subdirectories independently	2014-06-02 14:51:12 -07:00