+ sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ if (sock == -1) {
+ DRV_LOG(ERR, "cannot open socket: %s", rte_strerror(errno));
+ return -errno;
+ }
+ memset(&sa, 0, sizeof(sa));
+ sa.nl_family = AF_NETLINK;
+ sa.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR;
+ res = bind(sock, (struct sockaddr *)&sa, sizeof(sa));
+ if (res == -1) {
+ ret = -errno;
+ DRV_LOG(ERR, "cannot bind socket: %s", rte_strerror(errno));
+ goto close;
+ }
+ memset(&msg, 0, sizeof(msg));
+ msg.nlhdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+ msg.nlhdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ msg.nlhdr.nlmsg_type = RTM_GETADDR;
+ msg.nlhdr.nlmsg_pid = getpid();
+ msg.addrmsg.ifa_family = family;
+ msg.addrmsg.ifa_index = iface->if_index;
+ res = send(sock, &msg, msg.nlhdr.nlmsg_len, 0);
+ if (res == -1) {
+ ret = -errno;
+ DRV_LOG(ERR, "cannot send socket message: %s",
+ rte_strerror(errno));
+ goto close;
+ }
+ memset(buf, 0, sizeof(buf));
+ len = recv(sock, buf, sizeof(buf), 0);
+ if (len == -1) {
+ ret = -errno;
+ DRV_LOG(ERR, "cannot receive socket message: %s",
+ rte_strerror(errno));
+ goto close;
+ }
+ while (NLMSG_OK(retmsg, (unsigned int)len)) {
+ struct ifaddrmsg *retaddr =
+ (struct ifaddrmsg *)NLMSG_DATA(retmsg);
+
+ if (retaddr->ifa_family == family &&
+ retaddr->ifa_index == iface->if_index) {
+ struct rtattr *retrta = IFA_RTA(retaddr);
+ int attlen = IFA_PAYLOAD(retmsg);
+
+ while (RTA_OK(retrta, attlen)) {
+ if (retrta->rta_type == IFA_ADDRESS) {
+ ret = 1;
+ DRV_LOG(DEBUG, "interface %s has IP",
+ iface->if_name);
+ goto close;
+ }
+ retrta = RTA_NEXT(retrta, attlen);
+ }