2 * Copyright (c) 2014 Broadcom Corporation
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.
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.
17 #include <linux/vmalloc.h>
18 #include <net/cfg80211.h>
19 #include <net/netlink.h>
21 #include <brcmu_wifi.h>
22 #include "fwil_types.h"
30 static int brcmf_cfg80211_vndr_cmds_dcmd_handler(struct wiphy *wiphy,
31 struct wireless_dev *wdev,
32 const void *data, int len)
34 struct brcmf_cfg80211_vif *vif;
36 const struct brcmf_vndr_dcmd_hdr *cmdhdr = data;
37 struct sk_buff *reply;
38 int ret, payload, ret_len;
39 void *dcmd_buf = NULL, *wr_pointer;
40 u16 msglen, maxmsglen = PAGE_SIZE - 0x100;
42 brcmf_dbg(TRACE, "cmd %x set %d len %d\n", cmdhdr->cmd, cmdhdr->set,
45 vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
48 len -= sizeof(struct brcmf_vndr_dcmd_hdr);
49 ret_len = cmdhdr->len;
50 if (ret_len > 0 || len > 0) {
51 if (len > BRCMF_DCMD_MAXLEN) {
52 brcmf_err("oversize input buffer %d\n", len);
53 len = BRCMF_DCMD_MAXLEN;
55 if (ret_len > BRCMF_DCMD_MAXLEN) {
56 brcmf_err("oversize return buffer %d\n", ret_len);
57 ret_len = BRCMF_DCMD_MAXLEN;
59 payload = max(ret_len, len) + 1;
60 dcmd_buf = vzalloc(payload);
64 memcpy(dcmd_buf, (void *)cmdhdr + cmdhdr->offset, len);
65 *(char *)(dcmd_buf + len) = '\0';
69 ret = brcmf_fil_cmd_data_set(ifp, cmdhdr->cmd, dcmd_buf,
72 ret = brcmf_fil_cmd_data_get(ifp, cmdhdr->cmd, dcmd_buf,
77 wr_pointer = dcmd_buf;
79 msglen = ret_len > maxmsglen ? maxmsglen : ret_len;
81 payload = msglen + sizeof(msglen);
82 reply = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, payload);
88 if (nla_put(reply, BRCMF_NLATTR_DATA, msglen, wr_pointer) ||
89 nla_put_u16(reply, BRCMF_NLATTR_LEN, msglen)) {
95 ret = cfg80211_vendor_cmd_reply(reply);
108 const struct wiphy_vendor_command brcmf_vendor_cmds[] = {
111 .vendor_id = BROADCOM_OUI,
112 .subcmd = BRCMF_VNDR_CMDS_DCMD
114 .flags = WIPHY_VENDOR_CMD_NEED_WDEV |
115 WIPHY_VENDOR_CMD_NEED_NETDEV,
116 .doit = brcmf_cfg80211_vndr_cmds_dcmd_handler