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From: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
To: bpf@vger.kernel.org, netdev@vger.kernel.org, ast@fb.com,
	daniel@iogearbox.net
Cc: magnus.karlsson@intel.com, bjorn.topel@intel.com,
	Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Subject: [PATCH bpf-next 0/2] xsk: XSKMAP lookup improvements
Date: Thu, 24 Oct 2019 09:19:29 +0200	[thread overview]
Message-ID: <20191024071931.3628-1-maciej.fijalkowski@intel.com> (raw)

Hi,

This small set consists of two patches from Bjorn and myself which are
optimizing the XSKMAP lookups.  In first patch, Bjorn converts the array
of pointers to struct xdp_sock to the flexible array member of XSKMAP
itself. Second patch, based on Bjorn's work, implements the
map_gen_lookup() for XSKMAP.

Based on the XDP program from tools/lib/bpf/xsk.c where
bpf_map_lookup_elem() is explicitly called, this work yields the 5%
improvement for xdpsock's rxdrop scenario.

Thanks!


Björn Töpel (1):
  xsk: store struct xdp_sock as a flexible array member of the XSKMAP

Maciej Fijalkowski (1):
  xsk: implement map_gen_lookup() callback for XSKMAP

 kernel/bpf/xskmap.c | 74 +++++++++++++++++++++++++--------------------
 1 file changed, 42 insertions(+), 32 deletions(-)

-- 
2.20.1


             reply	other threads:[~2019-10-24 14:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-24  7:19 Maciej Fijalkowski [this message]
2019-10-24  7:19 ` [PATCH bpf-next 1/2] xsk: store struct xdp_sock as a flexible array member of the XSKMAP Maciej Fijalkowski
2019-10-24 20:12   ` Jakub Kicinski
2019-10-24  7:19 ` [PATCH bpf-next 2/2] xsk: implement map_gen_lookup() callback for XSKMAP Maciej Fijalkowski

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