Netfilter-Devel Archive on lore.kernel.org
 help / color / Atom feed
* [iptables PATCH v3 00/11] Improve iptables-nft performance with large rulesets
@ 2019-10-08 16:14 Phil Sutter
  2019-10-08 16:14 ` [iptables PATCH v3 01/11] nft: Pass nft_handle to flush_cache() Phil Sutter
                   ` (10 more replies)
  0 siblings, 11 replies; 22+ messages in thread
From: Phil Sutter @ 2019-10-08 16:14 UTC (permalink / raw)
  To: Pablo Neira Ayuso; +Cc: netfilter-devel

Third approach at caching optimizations implementation.

The goal of reducing scope of cached data remains the same: First,
optimize cache depth (i.e., omit caching rules or chains if not needed).
Second, optimize cache width (i.e., cache only required chains).

Changes since v2:

* Move all cache-related code into a dedicated source file.
* Replace have_cache boolean by a cache level, indicating cache
  completeness from a depth view.
* Keep a central function to populate the cache, perform consistency
  checking based on generation ID and update cache level.

The first two patches contain preparational work for the changes
described above. Patch 3 performs the code relocation, patches 4 to 8
extend functionality of the separated caching code and the last three
patches optimize core code in nft.c to put optimized caching into full
effect.

A follow-up series will deal with xtables-restore performance.

Phil Sutter (11):
  nft: Pass nft_handle to flush_cache()
  nft: Avoid nested cache fetching
  nft: Extract cache routines into nft-cache.c
  nft-cache: Introduce cache levels
  nft-cache: Fetch only chains in nft_chain_list_get()
  nft-cache: Cover for multiple fetcher invocation
  nft-cache: Support partial cache per table
  nft-cache: Support partial rule cache per chain
  nft: Reduce cache overhead of nft_chain_builtin_init()
  nft: Support nft_is_table_compatible() per chain
  nft: Optimize flushing all chains of a table

 iptables/Makefile.am       |   2 +-
 iptables/nft-cache.c       | 498 +++++++++++++++++++++++++++++++++++++
 iptables/nft-cache.h       |  18 ++
 iptables/nft.c             | 487 +++++++-----------------------------
 iptables/nft.h             |  22 +-
 iptables/xtables-restore.c |   5 +-
 iptables/xtables-save.c    |   5 +-
 7 files changed, 623 insertions(+), 414 deletions(-)
 create mode 100644 iptables/nft-cache.c
 create mode 100644 iptables/nft-cache.h

-- 
2.23.0


^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, back to index

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-10-08 16:14 [iptables PATCH v3 00/11] Improve iptables-nft performance with large rulesets Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 01/11] nft: Pass nft_handle to flush_cache() Phil Sutter
2019-10-09  9:30   ` Pablo Neira Ayuso
2019-10-08 16:14 ` [iptables PATCH v3 02/11] nft: Avoid nested cache fetching Phil Sutter
2019-10-09  9:30   ` Pablo Neira Ayuso
2019-10-08 16:14 ` [iptables PATCH v3 03/11] nft: Extract cache routines into nft-cache.c Phil Sutter
2019-10-09  9:32   ` Pablo Neira Ayuso
2019-10-08 16:14 ` [iptables PATCH v3 04/11] nft-cache: Introduce cache levels Phil Sutter
2019-10-09  9:37   ` Pablo Neira Ayuso
2019-10-09 10:29     ` Pablo Neira Ayuso
2019-10-10 22:09       ` Phil Sutter
2019-10-11  9:28         ` Pablo Neira Ayuso
2019-10-11 11:24           ` Phil Sutter
2019-10-14 10:00             ` Pablo Neira Ayuso
2019-10-11 10:20         ` Pablo Neira Ayuso
2019-10-08 16:14 ` [iptables PATCH v3 05/11] nft-cache: Fetch only chains in nft_chain_list_get() Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 06/11] nft-cache: Cover for multiple fetcher invocation Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 07/11] nft-cache: Support partial cache per table Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 08/11] nft-cache: Support partial rule cache per chain Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 09/11] nft: Reduce cache overhead of nft_chain_builtin_init() Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 10/11] nft: Support nft_is_table_compatible() per chain Phil Sutter
2019-10-08 16:14 ` [iptables PATCH v3 11/11] nft: Optimize flushing all chains of a table Phil Sutter

Netfilter-Devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/netfilter-devel/0 netfilter-devel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 netfilter-devel netfilter-devel/ https://lore.kernel.org/netfilter-devel \
		netfilter-devel@vger.kernel.org
	public-inbox-index netfilter-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.netfilter-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git