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net: simplify net_init_tap_one logic

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net_init_tap_one receives in vhostfdname a fd name from vhostfd= or
vhostfds=, or NULL if there is no vhostfd=/vhostfds=.  It is simpler
to just check vhostfdname, than it is to check for vhostfd= or
vhostfds=.  This also calms down Coverity, which otherwise thinks
that monitor_fd_param could dereference a NULL vhostfdname.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-02-26 00:05:57 +01:00 committed by Jason Wang
parent d24b2b1ccc
commit 3a2d44f6dd
1 changed files with 2 additions and 2 deletions
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4
net/tap.c
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@ -662,7 +662,7 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
options.backend_type = VHOST_BACKEND_TYPE_KERNEL;
options.net_backend = &s->nc;
if (tap->has_vhostfd || tap->has_vhostfds) {
if (vhostfdname) {
vhostfd = monitor_fd_param(cur_mon, vhostfdname, &err);
if (vhostfd == -1) {
error_propagate(errp, err);
@ -684,7 +684,7 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
"vhost-net requested but could not be initialized");
return;
}
} else if (tap->has_vhostfd || tap->has_vhostfds) {
} else if (vhostfdname) {
error_setg(errp, "vhostfd= is not valid without vhost");
}
}