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aacd9289af
We must try harder to get unique (addr, port) pairs when doing port autoselection for sockets with SO_REUSEADDR option set. We achieve this by adding a relaxation parameter to inet_csk_bind_conflict. When 'relax' parameter is off we return a conflict whenever the current searched pair (addr, port) is not unique. This tries to address the problems reported in patch: 8d238b25b1ec22a73b1c2206f111df2faaff8285 Revert "tcp: bind() fix when many ports are bound" Tests where ran for creating and binding(0) many sockets on 100 IPs. The results are, on average: * 60000 sockets, 600 ports / IP: * 0.210 s, 620 (IP, port) duplicates without patch * 0.219 s, no duplicates with patch * 100000 sockets, 1000 ports / IP: * 0.371 s, 1720 duplicates without patch * 0.373 s, no duplicates with patch * 200000 sockets, 2000 ports / IP: * 0.766 s, 6900 duplicates without patch * 0.768 s, no duplicates with patch * 500000 sockets, 5000 ports / IP: * 2.227 s, 41500 duplicates without patch * 2.284 s, no duplicates with patch Signed-off-by: Alex Copot <alex.mihai.c@gmail.com> Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
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* NET Generic infrastructure for INET6 connection oriented protocols.
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*
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* Authors: Many people, see the TCPv6 sources
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*
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* From code originally in TCPv6
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _INET6_CONNECTION_SOCK_H
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#define _INET6_CONNECTION_SOCK_H
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#include <linux/types.h>
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struct in6_addr;
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struct inet_bind_bucket;
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struct request_sock;
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struct sk_buff;
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struct sock;
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struct sockaddr;
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extern int inet6_csk_bind_conflict(const struct sock *sk,
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const struct inet_bind_bucket *tb, bool relax);
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extern struct dst_entry* inet6_csk_route_req(struct sock *sk,
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const struct request_sock *req);
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extern struct request_sock *inet6_csk_search_req(const struct sock *sk,
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struct request_sock ***prevp,
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const __be16 rport,
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const struct in6_addr *raddr,
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const struct in6_addr *laddr,
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const int iif);
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extern void inet6_csk_reqsk_queue_hash_add(struct sock *sk,
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struct request_sock *req,
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const unsigned long timeout);
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extern void inet6_csk_addr2sockaddr(struct sock *sk, struct sockaddr *uaddr);
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extern int inet6_csk_xmit(struct sk_buff *skb, struct flowi *fl);
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#endif /* _INET6_CONNECTION_SOCK_H */
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