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Ensure inp_vflag is consistently set for TCP endpoints.

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Make sure that the flags INP_IPV4 and INP_IPV6 are consistently set
for inpcbs used for TCP sockets, no matter if the setting is derived
from the net.inet6.ip6.v6only sysctl or the IPV6_V6ONLY socket option.
For UDP this was already done right.

PR:		221385
MFC after:	1 week
This commit is contained in:
Michael Tuexen 2017-08-18 07:27:15 +00:00
parent e9666bf645
commit 63ec505a4f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=322648
1 changed files with 2 additions and 0 deletions
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2
sys/netinet/tcp_usrreq.c
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@ -1918,6 +1918,8 @@ tcp_attach(struct socket *so)
#ifdef INET6
if (inp->inp_vflag & INP_IPV6PROTO) {
inp->inp_vflag |= INP_IPV6;
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0)
inp->inp_vflag |= INP_IPV4;
inp->in6p_hops = -1; /* use kernel default */
}
else