static int fi_ibv_getifaddrs(const char *service, uint64_t flags, struct fi_info *info)
{
struct ifaddrs *ifaddr, *ifa;
char name[INET6_ADDRSTRLEN];
const char *ret_ptr;
int ret, num_verbs_ifs = 0;
flags |= FI_NUMERICHOST | FI_SOURCE;
ret = getifaddrs(&ifaddr);
if (ret) {
FI_WARN(&fi_ibv_prov, FI_LOG_FABRIC,
"Unable to get interface addresses\n");
return ret;
}
for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
if (!ifa->ifa_addr || !(ifa->ifa_flags & IFF_UP) ||
!strcmp(ifa->ifa_name, "lo"))
continue;
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
ret_ptr = inet_ntop(AF_INET, &ofi_sin_addr(ifa->ifa_addr),
name, INET6_ADDRSTRLEN);
break;
case AF_INET6:
ret_ptr = inet_ntop(AF_INET6, &ofi_sin6_addr(ifa->ifa_addr),
name, INET6_ADDRSTRLEN);
break;
default:
continue;
}
if (!ret_ptr) {
FI_WARN(&fi_ibv_prov, FI_LOG_FABRIC,
"inet_ntop failed: %s(%d)\n",
strerror(errno), errno);
goto err;
}
ret = fi_ibv_copy_ifaddr(name, service, flags, info);
if (ret)
goto err;
num_verbs_ifs++;
}
freeifaddrs(ifaddr);
return num_verbs_ifs ? 0 : -FI_ENODATA;
err:
freeifaddrs(ifaddr);
return ret;
}
/* Builds a list of interfaces that correspond to active verbs devices */
static int fi_ibv_getifaddrs(struct dlist_entry *verbs_devs)
{
struct ifaddrs *ifaddr, *ifa;
char name[INET6_ADDRSTRLEN];
struct rdma_addrinfo *rai;
struct rdma_cm_id *id;
const char *ret_ptr;
int ret, num_verbs_ifs = 0;
char *iface = NULL;
size_t iface_len = 0;
int exact_match = 0;
ret = getifaddrs(&ifaddr);
if (ret) {
VERBS_WARN(FI_LOG_FABRIC,
"Unable to get interface addresses\n");
return ret;
}
/* select best iface name based on user's input */
if (fi_param_get_str(&fi_ibv_prov, "iface", &iface) == FI_SUCCESS) {
iface_len = strlen(iface);
if (iface_len > IFNAMSIZ) {
VERBS_INFO(FI_LOG_EP_CTRL,
"Too long iface name: %s, max: %d\n",
iface, IFNAMSIZ);
return -FI_EINVAL;
}
for (ifa = ifaddr; ifa && !exact_match; ifa = ifa->ifa_next)
exact_match = !strcmp(ifa->ifa_name, iface);
}
for (ifa = ifaddr; ifa; ifa = ifa->ifa_next) {
if (!ifa->ifa_addr || !(ifa->ifa_flags & IFF_UP) ||
!strcmp(ifa->ifa_name, "lo"))
continue;
if(iface) {
if(exact_match) {
if(strcmp(ifa->ifa_name, iface))
continue;
} else {
if(strncmp(ifa->ifa_name, iface, iface_len))
continue;
}
}
switch (ifa->ifa_addr->sa_family) {
case AF_INET:
ret_ptr = inet_ntop(AF_INET, &ofi_sin_addr(ifa->ifa_addr),
name, INET6_ADDRSTRLEN);
break;
case AF_INET6:
ret_ptr = inet_ntop(AF_INET6, &ofi_sin6_addr(ifa->ifa_addr),
name, INET6_ADDRSTRLEN);
break;
default:
continue;
}
if (!ret_ptr) {
VERBS_WARN(FI_LOG_FABRIC,
"inet_ntop failed: %s(%d)\n",
strerror(errno), errno);
goto err1;
}
ret = fi_ibv_create_ep(name, NULL, FI_NUMERICHOST | FI_SOURCE,
NULL, &rai, &id);
if (ret)
continue;
ret = fi_ibv_add_rai(verbs_devs, id, rai);
if (ret)
goto err2;
VERBS_DBG(FI_LOG_FABRIC, "Found active interface for verbs device: "
"%s with address: %s\n",
ibv_get_device_name(id->verbs->device), name);
rdma_destroy_ep(id);
num_verbs_ifs++;
}
freeifaddrs(ifaddr);
return num_verbs_ifs ? 0 : -FI_ENODATA;
err2:
rdma_destroy_ep(id);
err1:
fi_ibv_verbs_devs_free(verbs_devs);
freeifaddrs(ifaddr);
return ret;
}