support wireless interfaces for --net

1 files changed, 60 insertions, 1 deletions

diff --git a/src/fnet/veth.c b/src/fnet/veth.c
index c971943a7..fb4f3dc31 100644
--- a/src/fnet/veth.c
+++ b/src/fnet/veth.c
@@ -165,8 +165,66 @@ int net_create_macvlan(const char *dev, const char *parent, unsigned pid) {
         addattr_l (&req.n, sizeof(req), IFLA_INFO_KIND, &macvlan_type, 4);
 
         data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
-//      req.n.nlmsg_len += sizeof(struct ifinfomsg);
+        linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
+
+        // send message
+        if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0)
+                exit(2);
+
+        rtnl_close(&rth);
 
+        return 0;
+}
+
+int net_create_ipvlan(const char *dev, const char *parent, unsigned pid) {
+        int len;
+        struct iplink_req req;
+        assert(dev);
+        assert(parent);
+
+        if (rtnl_open(&rth, 0) < 0) {
+                fprintf(stderr, "cannot open netlink\n");
+                exit(1);
+        }
+
+        memset(&req, 0, sizeof(req));
+
+        req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+        req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_CREATE|NLM_F_EXCL;
+        req.n.nlmsg_type = RTM_NEWLINK;
+        req.i.ifi_family = 0;
+
+        // find parent ifindex
+        int parent_ifindex = if_nametoindex(parent);
+        if (parent_ifindex <= 0) {
+                fprintf(stderr, "Error: cannot find network device %s\n", parent);
+                exit(1);
+        }
+
+        // add parent
+        addattr_l(&req.n, sizeof(req), IFLA_LINK, &parent_ifindex, 4);
+
+        // add new interface name
+        len = strlen(dev) + 1;
+        addattr_l(&req.n, sizeof(req), IFLA_IFNAME, dev, len);
+
+        // place the interface in child namespace
+        addattr_l (&req.n, sizeof(req), IFLA_NET_NS_PID, &pid, 4);
+
+
+        // add  link info for the new interface
+        struct rtattr *linkinfo = NLMSG_TAIL(&req.n);
+        addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0);
+        addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, "ipvlan", strlen("ipvlan"));
+
+        // set macvlan bridge mode
+        struct rtattr * data = NLMSG_TAIL(&req.n);
+        addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0);
+        int macvlan_type = IPVLAN_MODE_L2;
+        addattr_l (&req.n, sizeof(req), IFLA_INFO_KIND, &macvlan_type, 2);
+
+        data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
+//      req.n.nlmsg_len += sizeof(struct ifinfomsg);
 
         data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data;
         linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo;
@@ -180,6 +238,7 @@ int net_create_macvlan(const char *dev, const char *parent, unsigned pid) {
         return 0;
 }
 
+
 // move the interface dev in namespace of program pid
 // when the interface is moved, netlink does not preserve interface configuration
 int net_move_interface(const char *dev, unsigned pid) {