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Release 4.11 drivers/net/wireless/broadcom/brcm80211/brcmfmac/vendor.c

/*
 * Copyright (c) 2014 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/vmalloc.h>
#include <net/cfg80211.h>
#include <net/netlink.h>

#include <brcmu_wifi.h>
#include "fwil_types.h"
#include "core.h"
#include "p2p.h"
#include "debug.h"
#include "cfg80211.h"
#include "vendor.h"
#include "fwil.h"


static int brcmf_cfg80211_vndr_cmds_dcmd_handler(struct wiphy *wiphy, struct wireless_dev *wdev, const void *data, int len) { struct brcmf_cfg80211_vif *vif; struct brcmf_if *ifp; const struct brcmf_vndr_dcmd_hdr *cmdhdr = data; struct sk_buff *reply; int ret, payload, ret_len; void *dcmd_buf = NULL, *wr_pointer; u16 msglen, maxmsglen = PAGE_SIZE - 0x100; if (len < sizeof(*cmdhdr)) { brcmf_err("vendor command too short: %d\n", len); return -EINVAL; } vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); ifp = vif->ifp; brcmf_dbg(TRACE, "ifidx=%d, cmd=%d\n", ifp->ifidx, cmdhdr->cmd); if (cmdhdr->offset > len) { brcmf_err("bad buffer offset %d > %d\n", cmdhdr->offset, len); return -EINVAL; } len -= cmdhdr->offset; ret_len = cmdhdr->len; if (ret_len > 0 || len > 0) { if (len > BRCMF_DCMD_MAXLEN) { brcmf_err("oversize input buffer %d\n", len); len = BRCMF_DCMD_MAXLEN; } if (ret_len > BRCMF_DCMD_MAXLEN) { brcmf_err("oversize return buffer %d\n", ret_len); ret_len = BRCMF_DCMD_MAXLEN; } payload = max(ret_len, len) + 1; dcmd_buf = vzalloc(payload); if (NULL == dcmd_buf) return -ENOMEM; memcpy(dcmd_buf, (void *)cmdhdr + cmdhdr->offset, len); *(char *)(dcmd_buf + len) = '\0'; } if (cmdhdr->set) ret = brcmf_fil_cmd_data_set(ifp, cmdhdr->cmd, dcmd_buf, ret_len); else ret = brcmf_fil_cmd_data_get(ifp, cmdhdr->cmd, dcmd_buf, ret_len); if (ret != 0) goto exit; wr_pointer = dcmd_buf; while (ret_len > 0) { msglen = ret_len > maxmsglen ? maxmsglen : ret_len; ret_len -= msglen; payload = msglen + sizeof(msglen); reply = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, payload); if (NULL == reply) { ret = -ENOMEM; break; } if (nla_put(reply, BRCMF_NLATTR_DATA, msglen, wr_pointer) || nla_put_u16(reply, BRCMF_NLATTR_LEN, msglen)) { kfree_skb(reply); ret = -ENOBUFS; break; } ret = cfg80211_vendor_cmd_reply(reply); if (ret) break; wr_pointer += msglen; } exit: vfree(dcmd_buf); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Franky Lin35581.05%133.33%
Pontus Fuchs5913.47%133.33%
Hante Meuleman245.48%133.33%
Total438100.00%3100.00%

const struct wiphy_vendor_command brcmf_vendor_cmds[] = { { { .vendor_id = BROADCOM_OUI, .subcmd = BRCMF_VNDR_CMDS_DCMD }, .flags = WIPHY_VENDOR_CMD_NEED_WDEV | WIPHY_VENDOR_CMD_NEED_NETDEV, .doit = brcmf_cfg80211_vndr_cmds_dcmd_handler }, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Franky Lin42083.00%116.67%
Pontus Fuchs5911.66%116.67%
Hante Meuleman275.34%466.67%
Total506100.00%6100.00%
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