netdev - [PATCH v2 net-next 0/4] tcp: Add a 2nd listener hashtable (port+addr)

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Message-ID: <20171201205232.3012584-1-kafai@fb.com>
Date:   Fri, 1 Dec 2017 12:52:28 -0800
From:   Martin KaFai Lau <kafai@...com>
To:     netdev <netdev@...r.kernel.org>
CC:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Kernel Team <kernel-team@...com>
Subject: [PATCH v2 net-next 0/4] tcp: Add a 2nd listener hashtable (port+addr)

This patch set adds a 2nd listener hashtable.  It is to resolve
the performance issue when a process is listening at many IP
addresses with the same port (e.g. [IP1]:443, [IP2]:443... [IPN]:443)

v2:
- Move the new lhash2 and lhash2_mask before the existing
  listening_hash to avoid adding another cacheline
  to inet_hashinfo (Suggested by Eric Dumazet, Thanks!)
- I take this chance to plug an existing 4 bytes hole while
  adding 'unsigned int lhash2_mask'.
- Add some comments about lhash2 in inet_hashtables.h

Martin KaFai Lau (4):
  inet: Add a count to struct inet_listen_hashbucket
  udp: Move udp[46]_portaddr_hash() to net/ip[v6].h
  inet: Add a 2nd listener hashtable (port+addr)
  tcp: Enable 2nd listener hashtable in TCP

 include/net/inet_connection_sock.h |   2 +
 include/net/inet_hashtables.h      |  29 +++++--
 include/net/ip.h                   |   9 ++
 include/net/ipv6.h                 |  17 ++++
 net/ipv4/inet_hashtables.c         | 173 +++++++++++++++++++++++++++++++++++--
 net/ipv4/tcp.c                     |   3 +
 net/ipv4/udp.c                     |  22 ++---
 net/ipv6/inet6_hashtables.c        |  66 ++++++++++++++
 net/ipv6/udp.c                     |  32 ++-----
 9 files changed, 301 insertions(+), 52 deletions(-)

-- 
2.9.5