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A complete duplication of binding should be allowed if on both new and

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duplicated sockets a multicast address is bound and either
SO_REUSEPORT or SO_REUSEADDR is set.

But actually it works for the following combinations:

  * SO_REUSEPORT is set for the fist socket and SO_REUSEPORT for the new;
  * SO_REUSEADDR is set for the fist socket and SO_REUSEADDR for the new;
  * SO_REUSEPORT is set for the fist socket and SO_REUSEADDR for the new;

and fails for this:

  * SO_REUSEADDR is set for the fist socket and SO_REUSEPORT for the new.

Fix the last case.

PR:		179901
MFC after:	1 month
This commit is contained in:
Mikolaj Golub 2013-07-12 19:08:33 +00:00
parent 2aea094f65
commit f122b319eb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=253282
2 changed files with 2 additions and 2 deletions
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2
sys/netinet/in_pcb.c
View File

@ -554,7 +554,7 @@ in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
* and a multicast address is bound on both
* new and duplicated sockets.
*/
if (so->so_options & SO_REUSEADDR)
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0)
reuseport = SO_REUSEADDR|SO_REUSEPORT;
} else if (sin->sin_addr.s_addr != INADDR_ANY) {
sin->sin_port = 0; /* yech... */

2
sys/netinet6/in6_pcb.c
View File

@ -156,7 +156,7 @@ in6_pcbbind(register struct inpcb *inp, struct sockaddr *nam,
* and a multicast address is bound on both
* new and duplicated sockets.
*/
if (so->so_options & SO_REUSEADDR)
if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0)
reuseport = SO_REUSEADDR|SO_REUSEPORT;
} else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
struct ifaddr *ifa;