1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
35 #include <arpa/inet.h>
40 #include <netinet/in.h>
41 #include <netinet/tcp.h>
45 #include "openflow-netlink.h"
49 #include "poll-loop.h"
50 #include "socket-util.h"
55 #define THIS_MODULE VLM_VCONN_NETLINK
63 static struct netlink_vconn *
64 netlink_vconn_cast(struct vconn *vconn)
66 assert(vconn->class == &netlink_vconn_class);
67 return CONTAINER_OF(vconn, struct netlink_vconn, vconn);
71 netlink_open(const char *name, char *suffix, struct vconn **vconnp)
73 struct netlink_vconn *netlink;
79 if (sscanf(suffix, "%d:%d", &dp_idx, &subscribe) < 1) {
80 fatal(0, "%s: syntax error", name);
83 netlink = xmalloc(sizeof *netlink);
84 netlink->vconn.class = &netlink_vconn_class;
85 netlink->vconn.connect_status = 0;
86 retval = dpif_open(dp_idx, subscribe, &netlink->dp);
92 *vconnp = &netlink->vconn;
97 netlink_close(struct vconn *vconn)
99 struct netlink_vconn *netlink = netlink_vconn_cast(vconn);
100 dpif_close(&netlink->dp);
105 netlink_recv(struct vconn *vconn, struct buffer **bufferp)
107 struct netlink_vconn *netlink = netlink_vconn_cast(vconn);
108 return dpif_recv_openflow(&netlink->dp, bufferp, false);
112 netlink_send(struct vconn *vconn, struct buffer *buffer)
114 struct netlink_vconn *netlink = netlink_vconn_cast(vconn);
115 int retval = dpif_send_openflow(&netlink->dp, buffer, false);
117 buffer_delete(buffer);
123 netlink_wait(struct vconn *vconn, enum vconn_wait_type wait)
125 struct netlink_vconn *netlink = netlink_vconn_cast(vconn);
126 short int events = 0;
139 poll_fd_wait(nl_sock_fd(netlink->dp.sock), events);
142 struct vconn_class netlink_vconn_class = {
144 .open = netlink_open,
145 .close = netlink_close,
146 .recv = netlink_recv,
147 .send = netlink_send,
148 .wait = netlink_wait,