1 files changed, 79 insertions, 0 deletions
diff --git a/src/drivers/netlink.c b/src/drivers/netlink.c
new file mode 100644
index 0000000..98ec387
--- /dev/null
+++ b/src/drivers/netlink.c
@@ -0,0 +1,79 @@
+/*
+ * Netlink helper functions for driver wrappers
+ * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "priv_netlink.h"
+#include "netlink.h"
+
+
+int netlink_send_oper_ifla(int sock, int ifindex, int linkmode, int operstate)
+{
+	struct {
+		struct nlmsghdr hdr;
+		struct ifinfomsg ifinfo;
+		char opts[16];
+	} req;
+	struct rtattr *rta;
+	static int nl_seq;
+	ssize_t ret;
+
+	os_memset(&req, 0, sizeof(req));
+
+	req.hdr.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+	req.hdr.nlmsg_type = RTM_SETLINK;
+	req.hdr.nlmsg_flags = NLM_F_REQUEST;
+	req.hdr.nlmsg_seq = ++nl_seq;
+	req.hdr.nlmsg_pid = 0;
+
+	req.ifinfo.ifi_family = AF_UNSPEC;
+	req.ifinfo.ifi_type = 0;
+	req.ifinfo.ifi_index = ifindex;
+	req.ifinfo.ifi_flags = 0;
+	req.ifinfo.ifi_change = 0;
+
+	if (linkmode != -1) {
+		rta = aliasing_hide_typecast(
+			((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
+			struct rtattr);
+		rta->rta_type = IFLA_LINKMODE;
+		rta->rta_len = RTA_LENGTH(sizeof(char));
+		*((char *) RTA_DATA(rta)) = linkmode;
+		req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
+			RTA_LENGTH(sizeof(char));
+	}
+	if (operstate != -1) {
+		rta = aliasing_hide_typecast(
+			((char *) &req + NLMSG_ALIGN(req.hdr.nlmsg_len)),
+			struct rtattr);
+		rta->rta_type = IFLA_OPERSTATE;
+		rta->rta_len = RTA_LENGTH(sizeof(char));
+		*((char *) RTA_DATA(rta)) = operstate;
+		req.hdr.nlmsg_len = NLMSG_ALIGN(req.hdr.nlmsg_len) +
+			RTA_LENGTH(sizeof(char));
+	}
+
+	wpa_printf(MSG_DEBUG, "netlink: Operstate: linkmode=%d, operstate=%d",
+		   linkmode, operstate);
+
+	ret = send(sock, &req, req.hdr.nlmsg_len, 0);
+	if (ret < 0) {
+		wpa_printf(MSG_DEBUG, "netlink: Sending operstate IFLA "
+			   "failed: %s (assume operstate is not supported)",
+			   strerror(errno));
+	}
+
+	return ret < 0 ? -1 : 0;
+}