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Date: Wed, 19 Jan 2022 02:04:11 -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 v2 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. v2: changed second patch to add fib_info_laddrhash_bucket() for consistency (David Ahern suggestion). 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 | 65 ++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 33 deletions(-) -- 2.34.1.703.g22d0c6ccf7-goog
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