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Fix endless loop when connect to a peer if all ports are completely used.

This commit is contained in:
logwang 2017-09-11 11:01:18 +08:00
parent 85eb2ae96a
commit 1cd6edf41e
1 changed files with 11 additions and 0 deletions
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11
freebsd/netinet/in_pcb.c
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@ -1114,9 +1114,11 @@ in_pcbconnect_setup(struct inpcb *inp, struct sockaddr *nam,
return (error); return (error);
} }
#else #else
{
struct ifaddr *ifa; struct ifaddr *ifa;
struct ifnet *ifp; struct ifnet *ifp;
struct sockaddr_in ifp_sin; struct sockaddr_in ifp_sin;
unsigned loop_count = 0;
bzero(&ifp_sin, sizeof(ifp_sin)); bzero(&ifp_sin, sizeof(ifp_sin));
ifp_sin.sin_addr.s_addr = laddr.s_addr; ifp_sin.sin_addr.s_addr = laddr.s_addr;
ifp_sin.sin_family = AF_INET; ifp_sin.sin_family = AF_INET;
@ -1138,7 +1140,16 @@ in_pcbconnect_setup(struct inpcb *inp, struct sockaddr *nam,
break; break;
} }
lport = 0; lport = 0;
/* Note:
* if all ports are completely used, just return.
* this ugly code is not a correct way, it just lets loop quit.
* we will fix it as soon as possible.
*/
if (++loop_count >= 65535) {
return (EADDRNOTAVAIL);
}
} }
}
#endif #endif
*laddrp = laddr.s_addr; *laddrp = laddr.s_addr;
*lportp = lport; *lportp = lport;