xenvirt: convert to use of PMD_REGISTER_DRIVER and fix linking
[dpdk.git] / lib / librte_eal / common / eal_common_vdev.c
1 /*-
2  *   BSD LICENSE
3  * 
4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5  *   Copyright(c) 2014 6WIND S.A.
6  *   All rights reserved.
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9  *   modification, are permitted provided that the following conditions
10  *   are met:
11  * 
12  *     * Redistributions of source code must retain the above copyright
13  *       notice, this list of conditions and the following disclaimer.
14  *     * Redistributions in binary form must reproduce the above copyright
15  *       notice, this list of conditions and the following disclaimer in
16  *       the documentation and/or other materials provided with the
17  *       distribution.
18  *     * Neither the name of Intel Corporation nor the names of its
19  *       contributors may be used to endorse or promote products derived
20  *       from this software without specific prior written permission.
21  * 
22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33  */
34
35 #include <string.h>
36 #include <inttypes.h>
37 #include <sys/queue.h>
38
39 #include <rte_vdev.h>
40 #include <rte_devargs.h>
41 #include <rte_debug.h>
42 #include <rte_devargs.h>
43
44 #include "eal_private.h"
45
46 /** Global list of virtual device drivers. */
47 static struct rte_vdev_driver_list vdev_driver_list =
48         TAILQ_HEAD_INITIALIZER(vdev_driver_list);
49
50 /* register a driver */
51 void
52 rte_eal_vdev_driver_register(struct rte_vdev_driver *driver)
53 {
54         TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
55 }
56
57 /* unregister a driver */
58 void
59 rte_eal_vdev_driver_unregister(struct rte_vdev_driver *driver)
60 {
61         TAILQ_REMOVE(&vdev_driver_list, driver, next);
62 }
63
64 int
65 rte_eal_vdev_init(void)
66 {
67         struct rte_devargs *devargs;
68         struct rte_vdev_driver *driver;
69
70         /* No need to register drivers that are embeded in DPDK
71          * (pmd_pcap, pmd_ring, ...). The initialization function have
72          * the ((constructor)) attribute so they will register at
73          * startup. */
74
75         /* call the init function for each virtual device */
76         TAILQ_FOREACH(devargs, &devargs_list, next) {
77
78                 if (devargs->type != RTE_DEVTYPE_VIRTUAL)
79                         continue;
80
81                 TAILQ_FOREACH(driver, &vdev_driver_list, next) {
82                         /* search a driver prefix in virtual device name */
83                         if (!strncmp(driver->name, devargs->virtual.drv_name,
84                                         strlen(driver->name))) {
85                                 driver->init(devargs->virtual.drv_name,
86                                         devargs->args);
87                                 break;
88                         }
89                 }
90
91                 if (driver == NULL) {
92                         rte_panic("no driver found for %s\n",
93                                   devargs->virtual.drv_name);
94                 }
95         }
96         return 0;
97 }