This can occur when IPv6 is disabled.
Signed-off-by: Hal Rosenstock <hal@xxxxxxxxxxxx>
---
ibacm/src/acm_util.c | 22 ++++++++++++++++------
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/ibacm/src/acm_util.c b/ibacm/src/acm_util.c
index b50fd74..5b84be8 100644
--- a/ibacm/src/acm_util.c
+++ b/ibacm/src/acm_util.c
@@ -127,7 +127,8 @@ int acm_if_iter_sys(acm_if_iter_cb cb, void *ctx)
struct ifconf *ifc;
struct ifreq *ifr;
char ip_str[INET6_ADDRSTRLEN];
- int s, ret, i, len;
+ int family = AF_INET6;
+ int s, ret, i, len, intfs = 0;
uint16_t pkey;
union ibv_gid sgid;
uint8_t addr_type;
@@ -135,9 +136,12 @@ int acm_if_iter_sys(acm_if_iter_cb cb, void *ctx)
size_t addr_len;
char *alias_sep;
- s = socket(AF_INET6, SOCK_DGRAM, 0);
- if (!s)
- return -1;
+next_family:
+ s = socket(family, SOCK_DGRAM, 0);
+ if (!s) {
+ ret = -1;
+ goto out;
+ }
len = sizeof(*ifc) + sizeof(*ifr) * 64;
ifc = malloc(len);
@@ -152,7 +156,8 @@ int acm_if_iter_sys(acm_if_iter_cb cb, void *ctx)
ret = ioctl(s, SIOCGIFCONF, ifc);
if (ret < 0) {
- acm_log(0, "ioctl ifconf error: %s\n", strerror(errno));
+ acm_log(0, "ioctl IPv%s ifconf error: %s\n",
+ (family == AF_INET6) ? "6" : "4", strerror(errno));
goto out2;
}
@@ -199,6 +204,7 @@ int acm_if_iter_sys(acm_if_iter_cb cb, void *ctx)
continue;
cb(ifr[i].ifr_name, &sgid, pkey, addr_type, addr, addr_len, ip_str, ctx);
+ intfs++;
}
ret = 0;
@@ -206,6 +212,10 @@ out2:
free(ifc);
out1:
close(s);
+out:
+ if (family == AF_INET6 && intfs == 0) {
+ family = AF_INET;
+ goto next_family;
+ }
return ret;
-
}
--
2.8.4
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