[PATCH net-next 0/4] net: tcp: make txhash use consistent for IPv4

[Antoine Tenart <atenart@kernel.org>]

Hello,

Series is divided in two parts. First two commits make the txhash (used
for the skb hash in TCP) to be consistent for all IPv4/TCP packets (IPv6
doesn't have the same issue). Last two commits improve doc/comment
hash-related parts.

One example is when using OvS with dp_hash, which uses skb->hash, to
select a path. We'd like packets from the same flow to be consistent, as
well as the hash being stable over time when using net.core.txrehash=0.
Same applies for kernel ECMP which also can use skb->hash.

IMHO the series makes sense in net-next, but we could argue (some)
commits be seen as fixes and I can resend if necessary.

Thanks!
Antoine

Antoine Tenart (4):
  net: tcp: make the txhash available in TIME_WAIT sockets for IPv4 too
  net: ipv4: use consistent txhash in TIME_WAIT and SYN_RECV
  Documentation: net: net.core.txrehash is not specific to listening
    sockets
  net: skbuff: fix l4_hash comment

 Documentation/admin-guide/sysctl/net.rst |  4 ++--
 include/linux/skbuff.h                   |  4 ++--
 include/net/ip.h                         |  2 +-
 net/ipv4/ip_output.c                     |  4 +++-
 net/ipv4/tcp_ipv4.c                      | 14 +++++++++-----
 net/ipv4/tcp_minisocks.c                 |  2 +-
 6 files changed, 18 insertions(+), 12 deletions(-)

-- 
2.40.0