Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / net / wireless / brcm80211 / brcmfmac / proto.c
1 /*
2  * Copyright (c) 2013 Broadcom Corporation
3  *
4  * Permission to use, copy, modify, and/or distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16
17
18  #include <linux/types.h>
19 #include <linux/slab.h>
20 #include <linux/netdevice.h>
21
22 #include <brcmu_wifi.h>
23 #include "core.h"
24 #include "bus.h"
25 #include "debug.h"
26 #include "proto.h"
27 #include "bcdc.h"
28 #include "msgbuf.h"
29
30
31 int brcmf_proto_attach(struct brcmf_pub *drvr)
32 {
33         struct brcmf_proto *proto;
34
35         brcmf_dbg(TRACE, "Enter\n");
36
37         proto = kzalloc(sizeof(*proto), GFP_ATOMIC);
38         if (!proto)
39                 goto fail;
40
41         drvr->proto = proto;
42
43         if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) {
44                 if (brcmf_proto_bcdc_attach(drvr))
45                         goto fail;
46         } else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) {
47                 if (brcmf_proto_msgbuf_attach(drvr))
48                         goto fail;
49         } else {
50                 brcmf_err("Unsupported proto type %d\n",
51                           drvr->bus_if->proto_type);
52                 goto fail;
53         }
54         if ((proto->txdata == NULL) || (proto->hdrpull == NULL) ||
55             (proto->query_dcmd == NULL) || (proto->set_dcmd == NULL) ||
56             (proto->configure_addr_mode == NULL) ||
57             (proto->delete_peer == NULL) || (proto->add_tdls_peer == NULL)) {
58                 brcmf_err("Not all proto handlers have been installed\n");
59                 goto fail;
60         }
61         return 0;
62
63 fail:
64         kfree(proto);
65         drvr->proto = NULL;
66         return -ENOMEM;
67 }
68
69 void brcmf_proto_detach(struct brcmf_pub *drvr)
70 {
71         brcmf_dbg(TRACE, "Enter\n");
72
73         if (drvr->proto) {
74                 if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
75                         brcmf_proto_bcdc_detach(drvr);
76                 else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
77                         brcmf_proto_msgbuf_detach(drvr);
78                 kfree(drvr->proto);
79                 drvr->proto = NULL;
80         }
81 }