tcp: bind() fix when many ports are bound

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Port autoselection done by kernel only works when number of bound
sockets is under a threshold (typically 30000).

When this threshold is over, we must check if there is a conflict before
exiting first loop in inet_csk_get_port()

Change inet_csk_bind_conflict() to forbid two reuse-enabled sockets to
bind on same (address,port) tuple (with a non ANY address)

Same change for inet6_csk_bind_conflict()

Reported-by: Gaspar Chilingarov <gasparch@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Eric Dumazet 2010-04-21 09:26:15 +00:00 • committed by David S. Miller

parent 24acc68956

commit fda48a0d7a

2 changed files with 21 additions and 10 deletions

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16

net/ipv4/inet_connection_sock.c

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15

net/ipv6/inet6_connection_sock.c

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