netdev - [PATCH net 0/2] ipv4: avoid pathological hash tables

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Date:   Tue, 18 Jan 2022 12:46:44 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     David Ahern <dsahern@...nel.org>, netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net 0/2] ipv4: avoid pathological hash tables

From: Eric Dumazet <edumazet@...gle.com>

This series speeds up netns dismantles on hosts
having many active netns, by making sure two hash tables
used for IPV4 fib contains uniformly spread items.

Eric Dumazet (2):
  ipv4: avoid quadratic behavior in netns dismantle
  ipv4: add net_hash_mix() dispersion to fib_info_laddrhash keys

 net/ipv4/fib_semantics.c | 56 +++++++++++++++++++---------------------
 1 file changed, 26 insertions(+), 30 deletions(-)

-- 
2.34.1.703.g22d0c6ccf7-goog