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dpif: Serialize initialization.

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Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2013-04-23 14:35:29 -07:00
parent 811d6451a1
commit eb8ed438c2
2 changed files with 8 additions and 5 deletions
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7
lib/dpif-linux.c
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@@ -1440,9 +1440,10 @@ const struct dpif_class dpif_linux_class = {
static int
dpif_linux_init(void)
{
static int error = -1;
static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
static int error;
if (error < 0) {
if (ovsthread_once_start(&once)) {
unsigned int ovs_vport_mcgroup;
error = nl_lookup_genl_family(OVS_DATAPATH_FAMILY,
@@ -1472,6 +1473,8 @@ dpif_linux_init(void)
nln = nln_create(NETLINK_GENERIC, ovs_vport_mcgroup,
dpif_linux_nln_parse, &vport);
}
ovsthread_once_done(&once);
}
return error;