projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1bacb048 FL |
1 | /* |
| 2 | * Copyright (c) 2014 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 | #include <linux/vmalloc.h> | |
| 18 | #include <net/cfg80211.h> | |
| 19 | #include <net/netlink.h> | |
| 20 | ||
| 21 | #include <brcmu_wifi.h> | |
| 22 | #include "fwil_types.h" | |
| 23 | #include "dhd.h" | |
| 24 | #include "p2p.h" | |
| a8e8ed34 | 25 | #include "debug.h" |
| 1bacb048 FL |
26 | #include "wl_cfg80211.h" |
| 27 | #include "vendor.h" | |
| 28 | #include "fwil.h" | |
| 29 | ||
| 30 | static int brcmf_cfg80211_vndr_cmds_dcmd_handler(struct wiphy *wiphy, | |
| 31 | struct wireless_dev *wdev, | |
| 32 | const void *data, int len) | |
| 33 | { | |
| 34 | struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); | |
| 35 | struct net_device *ndev = cfg_to_ndev(cfg); | |
| 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; | |
| 41 | ||
| 42 | brcmf_dbg(TRACE, "cmd %x set %d len %d\n", cmdhdr->cmd, cmdhdr->set, | |
| 43 | cmdhdr->len); | |
| 44 | ||
| 45 | len -= sizeof(struct brcmf_vndr_dcmd_hdr); | |
| 46 | ret_len = cmdhdr->len; | |
| 47 | if (ret_len > 0 || len > 0) { | |
| 48 | if (len > BRCMF_DCMD_MAXLEN) { | |
| 49 | brcmf_err("oversize input buffer %d\n", len); | |
| 50 | len = BRCMF_DCMD_MAXLEN; | |
| 51 | } | |
| 52 | if (ret_len > BRCMF_DCMD_MAXLEN) { | |
| 53 | brcmf_err("oversize return buffer %d\n", ret_len); | |
| 54 | ret_len = BRCMF_DCMD_MAXLEN; | |
| 55 | } | |
| 56 | payload = max(ret_len, len) + 1; | |
| 57 | dcmd_buf = vzalloc(payload); | |
| 58 | if (NULL == dcmd_buf) | |
| 59 | return -ENOMEM; | |
| 60 | ||
| 61 | memcpy(dcmd_buf, (void *)cmdhdr + cmdhdr->offset, len); | |
| 62 | *(char *)(dcmd_buf + len) = '\0'; | |
| 63 | } | |
| 64 | ||
| 65 | if (cmdhdr->set) | |
| 66 | ret = brcmf_fil_cmd_data_set(netdev_priv(ndev), cmdhdr->cmd, | |
| 67 | dcmd_buf, ret_len); | |
| 68 | else | |
| 69 | ret = brcmf_fil_cmd_data_get(netdev_priv(ndev), cmdhdr->cmd, | |
| 70 | dcmd_buf, ret_len); | |
| 71 | if (ret != 0) | |
| 72 | goto exit; | |
| 73 | ||
| 74 | wr_pointer = dcmd_buf; | |
| 75 | while (ret_len > 0) { | |
| 76 | msglen = ret_len > maxmsglen ? maxmsglen : ret_len; | |
| 77 | ret_len -= msglen; | |
| 78 | payload = msglen + sizeof(msglen); | |
| 79 | reply = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, payload); | |
| 80 | if (NULL == reply) { | |
| 81 | ret = -ENOMEM; | |
| 82 | break; | |
| 83 | } | |
| 84 | ||
| 85 | if (nla_put(reply, BRCMF_NLATTR_DATA, msglen, wr_pointer) || | |
| 86 | nla_put_u16(reply, BRCMF_NLATTR_LEN, msglen)) { | |
| 87 | kfree_skb(reply); | |
| 88 | ret = -ENOBUFS; | |
| 89 | break; | |
| 90 | } | |
| 91 | ||
| 92 | ret = cfg80211_vendor_cmd_reply(reply); | |
| 93 | if (ret) | |
| 94 | break; | |
| 95 | ||
| 96 | wr_pointer += msglen; | |
| 97 | } | |
| 98 | ||
| 99 | exit: | |
| 100 | vfree(dcmd_buf); | |
| 101 | ||
| 102 | return ret; | |
| 103 | } | |
| 104 | ||
| 105 | const struct wiphy_vendor_command brcmf_vendor_cmds[] = { | |
| 106 | { | |
| 107 | { | |
| 108 | .vendor_id = BROADCOM_OUI, | |
| 109 | .subcmd = BRCMF_VNDR_CMDS_DCMD | |
| 110 | }, | |
| 111 | .flags = WIPHY_VENDOR_CMD_NEED_WDEV | | |
| 112 | WIPHY_VENDOR_CMD_NEED_NETDEV, | |
| 113 | .doit = brcmf_cfg80211_vndr_cmds_dcmd_handler | |
| 114 | }, | |
| 115 | }; |