From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f48.google.com ([74.125.83.48]:40391 "EHLO mail-pg0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751948AbeBUSuE (ORCPT ); Wed, 21 Feb 2018 13:50:04 -0500 Received: by mail-pg0-f48.google.com with SMTP id g2so992141pgn.7 for ; Wed, 21 Feb 2018 10:50:04 -0800 (PST) From: David Ahern To: netdev@vger.kernel.org Cc: idosch@idosch.org, tom@herbertland.com, davem@davemloft.net, roopa@cumulusnetworks.com, nikolay@cumulusnetworks.com, David Ahern Subject: [PATCH net-next 0/7] net/ipv6: Add support for path selection using hash of 5-tuple Date: Wed, 21 Feb 2018 10:49:47 -0800 Message-Id: <20180221184954.28875-1-dsahern@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: Hardware supports multipath selection using the standard L4 5-tuple instead of just L3 and the flow label. In addition, some network operators prefer IPv6 path selection to use the 5-tuple. To that end, add support to IPv6 for multipath hash policy similar to bf4e0a3db97eb ("net: ipv4: add support for ECMP hash policy choice"). The default is still L3 which covers source and destination addresses along with flow label and IPv6 protocol. This gives users a choice in hash algorithms if they believe L3 only and the IPv6 flow label are not sufficient for their use case. A separate sysctl is added for IPv6, allowing IPv4 and IPv6 to use different algorithms if desired. The first 2 patches modify the IPv4 variant so that at the end of the patch set the ipv4 and ipv6 implementations are direct parallels. Patch 3 refactors the existing rt6_multipath_hash in preparation for adding the policy option. Patch 4 renames the existing netevent to have IPv4 in the name so ipv4 changes can be distinguished from IPv6 if the netevent handler cares. Patch 5 adds the L4 hash support. Patch 6 adds the hook for the netevent to the spectrum driver to update the ASIC. Patch 7 removes no longer used code. RFC to v1: - rebase to top of net-next - fix addr_type in hash_keys and removed flow label as noticed by Ido - added a comment to cover letter about choice in algorithms based on use case per Or's comments David Ahern (7): net/ipv4: Pass net to fib_multipath_hash instead of fib_info net: Align ip_multipath_l3_keys and ip6_multipath_l3_keys net/ipv6: Make rt6_multipath_hash similar to fib_multipath_hash net: Rename NETEVENT_MULTIPATH_HASH_UPDATE net/ipv6: Add support for path selection using hash of 5-tuple mlxsw: spectrum_router: Add support for ipv6 hash policy update net: Remove unused get_hash_from_flow functions Documentation/networking/ip-sysctl.txt | 7 +++ .../net/ethernet/mellanox/mlxsw/spectrum_router.c | 13 ++++- include/net/flow.h | 15 ----- include/net/ip6_route.h | 3 +- include/net/ip_fib.h | 2 +- include/net/netevent.h | 3 +- include/net/netns/ipv6.h | 1 + net/core/flow_dissector.c | 16 ------ net/ipv4/fib_semantics.c | 2 +- net/ipv4/route.c | 25 +++++---- net/ipv4/sysctl_net_ipv4.c | 2 +- net/ipv6/icmp.c | 2 +- net/ipv6/route.c | 64 ++++++++++++++++++---- net/ipv6/sysctl_net_ipv6.c | 26 +++++++++ 14 files changed, 118 insertions(+), 63 deletions(-) -- 2.11.0