680 lines
15 KiB
C
680 lines
15 KiB
C
/*
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* This file is part of wl1251
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*
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* Copyright (C) 2008 Nokia Corporation
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*
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* Contact: Kalle Valo <kalle.valo@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include "wl1251_netlink.h"
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#include <linux/mutex.h>
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#include <linux/socket.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <net/genetlink.h>
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#include <net/wireless.h>
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#include <net/mac80211.h>
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#include "wl1251.h"
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#include "wl1251_spi.h"
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#include "wl1251_acx.h"
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/* FIXME: this should be changed as soon as user space catches up */
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#define WL1251_NL_NAME "wl1251"
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#define WL1251_NL_VERSION 1
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#define WL1251_MAX_TEST_LENGTH 1024
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#define WL1251_MAX_NVS_LENGTH 1024
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enum wl1251_nl_commands {
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WL1251_NL_CMD_UNSPEC,
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WL1251_NL_CMD_TEST,
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WL1251_NL_CMD_INTERROGATE,
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WL1251_NL_CMD_CONFIGURE,
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WL1251_NL_CMD_PHY_REG_READ,
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WL1251_NL_CMD_NVS_PUSH,
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WL1251_NL_CMD_REG_WRITE,
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WL1251_NL_CMD_REG_READ,
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WL1251_NL_CMD_SET_PLT_MODE,
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__WL1251_NL_CMD_AFTER_LAST
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};
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#define WL1251_NL_CMD_MAX (__WL1251_NL_CMD_AFTER_LAST - 1)
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enum wl1251_nl_attrs {
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WL1251_NL_ATTR_UNSPEC,
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WL1251_NL_ATTR_IFNAME,
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WL1251_NL_ATTR_CMD_TEST_PARAM,
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WL1251_NL_ATTR_CMD_TEST_ANSWER,
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WL1251_NL_ATTR_CMD_IE,
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WL1251_NL_ATTR_CMD_IE_LEN,
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WL1251_NL_ATTR_CMD_IE_BUFFER,
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WL1251_NL_ATTR_CMD_IE_ANSWER,
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WL1251_NL_ATTR_REG_ADDR,
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WL1251_NL_ATTR_REG_VAL,
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WL1251_NL_ATTR_NVS_BUFFER,
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WL1251_NL_ATTR_NVS_LEN,
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WL1251_NL_ATTR_PLT_MODE,
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__WL1251_NL_ATTR_AFTER_LAST
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};
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#define WL1251_NL_ATTR_MAX (__WL1251_NL_ATTR_AFTER_LAST - 1)
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static struct genl_family wl1251_nl_family = {
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.id = GENL_ID_GENERATE,
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.name = WL1251_NL_NAME,
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.hdrsize = 0,
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.version = WL1251_NL_VERSION,
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.maxattr = WL1251_NL_ATTR_MAX,
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};
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static struct net_device *ifname_to_netdev(struct net *net,
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struct genl_info *info)
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{
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char *ifname;
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if (!info->attrs[WL1251_NL_ATTR_IFNAME])
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return NULL;
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ifname = nla_data(info->attrs[WL1251_NL_ATTR_IFNAME]);
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wl1251_debug(DEBUG_NETLINK, "Looking for %s", ifname);
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return dev_get_by_name(net, ifname);
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}
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static struct wl1251 *ifname_to_wl1251(struct net *net, struct genl_info *info)
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{
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struct net_device *netdev;
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struct wireless_dev *wdev;
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struct wiphy *wiphy;
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struct ieee80211_hw *hw;
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netdev = ifname_to_netdev(net, info);
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if (netdev == NULL) {
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wl1251_error("Wrong interface");
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return NULL;
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}
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wdev = netdev->ieee80211_ptr;
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if (wdev == NULL) {
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wl1251_error("ieee80211_ptr is NULL");
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return NULL;
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}
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wiphy = wdev->wiphy;
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if (wiphy == NULL) {
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wl1251_error("wiphy is NULL");
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return NULL;
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}
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hw = wiphy_priv(wiphy);
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if (hw == NULL) {
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wl1251_error("hw is NULL");
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return NULL;
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}
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dev_put(netdev);
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return hw->priv;
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}
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static int wl1251_nl_test_cmd(struct sk_buff *skb, struct genl_info *info)
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{
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struct wl1251 *wl;
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struct wl1251_command *cmd;
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char *buf;
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int buf_len, ret, cmd_len;
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u8 answer;
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if (!info->attrs[WL1251_NL_ATTR_CMD_TEST_PARAM])
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return -EINVAL;
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wl = ifname_to_wl1251(&init_net, info);
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if (wl == NULL) {
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wl1251_error("wl1251 not found");
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return -EINVAL;
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}
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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buf = nla_data(info->attrs[WL1251_NL_ATTR_CMD_TEST_PARAM]);
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buf_len = nla_len(info->attrs[WL1251_NL_ATTR_CMD_TEST_PARAM]);
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answer = nla_get_u8(info->attrs[WL1251_NL_ATTR_CMD_TEST_ANSWER]);
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cmd->header.id = CMD_TEST;
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memcpy(cmd->parameters, buf, buf_len);
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cmd_len = sizeof(struct wl1251_cmd_header) + buf_len;
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mutex_lock(&wl->mutex);
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ret = wl1251_cmd_test(wl, cmd, cmd_len, answer);
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mutex_unlock(&wl->mutex);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto out;
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}
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if (answer) {
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struct sk_buff *msg;
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void *hdr;
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msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg) {
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ret = -ENOMEM;
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goto out;
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}
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hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
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&wl1251_nl_family, 0, WL1251_NL_CMD_TEST);
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if (IS_ERR(hdr)) {
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ret = PTR_ERR(hdr);
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goto nla_put_failure;
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}
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NLA_PUT_STRING(msg, WL1251_NL_ATTR_IFNAME,
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nla_data(info->attrs[WL1251_NL_ATTR_IFNAME]));
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NLA_PUT(msg, WL1251_NL_ATTR_CMD_TEST_ANSWER,
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sizeof(*cmd), cmd);
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ret = genlmsg_end(msg, hdr);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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}
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wl1251_debug(DEBUG_NETLINK, "TEST cmd sent, answer");
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ret = genlmsg_reply(msg, info);
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goto out;
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nla_put_failure:
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nlmsg_free(msg);
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} else
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wl1251_debug(DEBUG_NETLINK, "TEST cmd sent");
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out:
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kfree(cmd);
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return ret;
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}
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static int wl1251_nl_interrogate(struct sk_buff *skb, struct genl_info *info)
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{
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struct wl1251 *wl;
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struct sk_buff *msg;
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int ret = -ENOBUFS, cmd_ie, cmd_ie_len;
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struct wl1251_command *cmd;
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void *hdr;
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if (!info->attrs[WL1251_NL_ATTR_CMD_IE])
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return -EINVAL;
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if (!info->attrs[WL1251_NL_ATTR_CMD_IE_LEN])
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return -EINVAL;
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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wl = ifname_to_wl1251(&init_net, info);
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if (wl == NULL) {
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wl1251_error("wl1251 not found");
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ret = -EINVAL;
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goto nla_put_failure;
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}
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/* acx id */
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cmd_ie = nla_get_u32(info->attrs[WL1251_NL_ATTR_CMD_IE]);
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/* maximum length of acx, including all headers */
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cmd_ie_len = nla_get_u32(info->attrs[WL1251_NL_ATTR_CMD_IE_LEN]);
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wl1251_debug(DEBUG_NETLINK, "Getting IE 0x%x (len %d)",
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cmd_ie, cmd_ie_len);
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mutex_lock(&wl->mutex);
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ret = wl1251_cmd_interrogate(wl, cmd_ie, cmd, cmd_ie_len);
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mutex_unlock(&wl->mutex);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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}
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hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
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&wl1251_nl_family, 0, WL1251_NL_CMD_INTERROGATE);
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if (IS_ERR(hdr)) {
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ret = PTR_ERR(hdr);
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goto nla_put_failure;
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}
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NLA_PUT_STRING(msg, WL1251_NL_ATTR_IFNAME,
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nla_data(info->attrs[WL1251_NL_ATTR_IFNAME]));
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NLA_PUT(msg, WL1251_NL_ATTR_CMD_IE_ANSWER, cmd_ie_len, cmd);
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ret = genlmsg_end(msg, hdr);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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}
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kfree(cmd);
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return genlmsg_reply(msg, info);
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nla_put_failure:
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kfree(cmd);
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nlmsg_free(msg);
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return ret;
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}
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static int wl1251_nl_configure(struct sk_buff *skb, struct genl_info *info)
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{
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int ret = 0, cmd_ie_len, acx_len;
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struct acx_header *acx = NULL;
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struct sk_buff *msg;
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struct wl1251 *wl;
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void *cmd_ie;
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u16 *id;
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if (!info->attrs[WL1251_NL_ATTR_CMD_IE_BUFFER])
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return -EINVAL;
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if (!info->attrs[WL1251_NL_ATTR_CMD_IE_LEN])
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return -EINVAL;
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msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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wl = ifname_to_wl1251(&init_net, info);
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if (wl == NULL) {
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wl1251_error("wl1251 not found");
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ret = -EINVAL;
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goto nla_put_failure;
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}
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/* contains the acx header but not the cmd header */
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cmd_ie = nla_data(info->attrs[WL1251_NL_ATTR_CMD_IE_BUFFER]);
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cmd_ie_len = nla_get_u32(info->attrs[WL1251_NL_ATTR_CMD_IE_LEN]);
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/* acx id is in the first two bytes */
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id = cmd_ie;
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/* need to add acx_header before cmd_ie, so create a new command */
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acx_len = sizeof(struct acx_header) + cmd_ie_len;
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acx = kzalloc(acx_len, GFP_KERNEL);
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if (!acx) {
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ret = -ENOMEM;
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goto nla_put_failure;
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}
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/* copy the acx header and the payload */
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memcpy(&acx->id, cmd_ie, cmd_ie_len);
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mutex_lock(&wl->mutex);
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ret = wl1251_cmd_configure(wl, *id, acx, acx_len);
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mutex_unlock(&wl->mutex);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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}
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wl1251_debug(DEBUG_NETLINK, "CONFIGURE cmd sent");
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nla_put_failure:
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kfree(acx);
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nlmsg_free(msg);
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return ret;
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}
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static int wl1251_nl_phy_reg_read(struct sk_buff *skb, struct genl_info *info)
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{
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struct wl1251 *wl;
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struct sk_buff *msg;
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u32 reg_addr, *reg_value = NULL;
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int ret = 0;
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void *hdr;
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if (!info->attrs[WL1251_NL_ATTR_REG_ADDR])
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return -EINVAL;
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msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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wl = ifname_to_wl1251(&init_net, info);
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if (wl == NULL) {
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wl1251_error("wl1251 not found");
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ret = -EINVAL;
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goto nla_put_failure;
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}
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reg_value = kmalloc(sizeof(*reg_value), GFP_KERNEL);
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if (!reg_value) {
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ret = -ENOMEM;
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goto nla_put_failure;
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}
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reg_addr = nla_get_u32(info->attrs[WL1251_NL_ATTR_REG_ADDR]);
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wl1251_debug(DEBUG_NETLINK, "Reading PHY reg 0x%x", reg_addr);
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mutex_lock(&wl->mutex);
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ret = wl1251_cmd_read_memory(wl, reg_addr, reg_value,
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sizeof(*reg_value));
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mutex_unlock(&wl->mutex);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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}
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hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
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&wl1251_nl_family, 0, WL1251_NL_CMD_PHY_REG_READ);
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if (IS_ERR(hdr)) {
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ret = PTR_ERR(hdr);
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goto nla_put_failure;
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}
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NLA_PUT_STRING(msg, WL1251_NL_ATTR_IFNAME,
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nla_data(info->attrs[WL1251_NL_ATTR_IFNAME]));
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NLA_PUT_U32(msg, WL1251_NL_ATTR_REG_VAL, *reg_value);
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ret = genlmsg_end(msg, hdr);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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}
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kfree(reg_value);
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return genlmsg_reply(msg, info);
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nla_put_failure:
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nlmsg_free(msg);
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kfree(reg_value);
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return ret;
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}
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static int wl1251_nl_nvs_push(struct sk_buff *skb, struct genl_info *info)
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{
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struct wl1251 *wl;
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int ret = 0;
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if (!info->attrs[WL1251_NL_ATTR_NVS_BUFFER])
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return -EINVAL;
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if (!info->attrs[WL1251_NL_ATTR_NVS_LEN])
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return -EINVAL;
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wl = ifname_to_wl1251(&init_net, info);
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if (wl == NULL) {
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wl1251_error("wl1251 not found");
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return -EINVAL;
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}
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mutex_lock(&wl->mutex);
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wl->nvs_len = nla_get_u32(info->attrs[WL1251_NL_ATTR_NVS_LEN]);
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if (wl->nvs_len % 4) {
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wl1251_error("NVS size is not multiple of 32: %d", wl->nvs_len);
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ret = -EILSEQ;
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goto out;
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}
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/* If we already have an NVS, we should free it */
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kfree(wl->nvs);
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wl->nvs = kzalloc(wl->nvs_len, GFP_KERNEL);
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if (wl->nvs == NULL) {
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wl1251_error("Can't allocate NVS");
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ret = -ENOMEM;
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goto out;
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}
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memcpy(wl->nvs,
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nla_data(info->attrs[WL1251_NL_ATTR_NVS_BUFFER]),
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wl->nvs_len);
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wl1251_debug(DEBUG_NETLINK, "got NVS from userspace, %d bytes",
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wl->nvs_len);
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out:
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mutex_unlock(&wl->mutex);
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return ret;
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}
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static int wl1251_nl_reg_read(struct sk_buff *skb, struct genl_info *info)
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{
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struct wl1251 *wl;
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u32 addr, val;
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int ret = 0;
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struct sk_buff *msg;
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void *hdr;
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if (!info->attrs[WL1251_NL_ATTR_REG_ADDR])
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return -EINVAL;
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msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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wl = ifname_to_wl1251(&init_net, info);
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if (wl == NULL) {
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wl1251_error("wl1251 not found");
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return -EINVAL;
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}
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addr = nla_get_u32(info->attrs[WL1251_NL_ATTR_REG_ADDR]);
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mutex_lock(&wl->mutex);
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val = wl1251_reg_read32(wl, addr);
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mutex_unlock(&wl->mutex);
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hdr = genlmsg_put(msg, info->snd_pid, info->snd_seq,
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&wl1251_nl_family, 0, WL1251_NL_CMD_PHY_REG_READ);
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if (IS_ERR(hdr)) {
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ret = PTR_ERR(hdr);
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goto nla_put_failure;
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}
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NLA_PUT_STRING(msg, WL1251_NL_ATTR_IFNAME,
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nla_data(info->attrs[WL1251_NL_ATTR_IFNAME]));
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NLA_PUT_U32(msg, WL1251_NL_ATTR_REG_VAL, val);
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ret = genlmsg_end(msg, hdr);
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if (ret < 0) {
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wl1251_error("%s() failed", __func__);
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goto nla_put_failure;
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|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int wl1251_nl_reg_write(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct wl1251 *wl;
|
|
u32 addr, val;
|
|
|
|
if (!info->attrs[WL1251_NL_ATTR_REG_ADDR])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[WL1251_NL_ATTR_REG_VAL])
|
|
return -EINVAL;
|
|
|
|
wl = ifname_to_wl1251(&init_net, info);
|
|
if (wl == NULL) {
|
|
wl1251_error("wl1251 not found");
|
|
return -EINVAL;
|
|
}
|
|
|
|
addr = nla_get_u32(info->attrs[WL1251_NL_ATTR_REG_ADDR]);
|
|
val = nla_get_u32(info->attrs[WL1251_NL_ATTR_REG_VAL]);
|
|
|
|
mutex_lock(&wl->mutex);
|
|
wl1251_reg_write32(wl, addr, val);
|
|
mutex_unlock(&wl->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wl1251_nl_set_plt_mode(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct wl1251 *wl;
|
|
u32 val;
|
|
int ret;
|
|
|
|
if (!info->attrs[WL1251_NL_ATTR_PLT_MODE])
|
|
return -EINVAL;
|
|
|
|
wl = ifname_to_wl1251(&init_net, info);
|
|
if (wl == NULL) {
|
|
wl1251_error("wl1251 not found");
|
|
return -EINVAL;
|
|
}
|
|
|
|
val = nla_get_u32(info->attrs[WL1251_NL_ATTR_PLT_MODE]);
|
|
|
|
switch (val) {
|
|
case 0:
|
|
ret = wl1251_plt_stop(wl);
|
|
break;
|
|
case 1:
|
|
ret = wl1251_plt_start(wl);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct nla_policy wl1251_nl_policy[WL1251_NL_ATTR_MAX + 1] = {
|
|
[WL1251_NL_ATTR_IFNAME] = { .type = NLA_NUL_STRING,
|
|
.len = IFNAMSIZ-1 },
|
|
[WL1251_NL_ATTR_CMD_TEST_PARAM] = { .type = NLA_BINARY,
|
|
.len = WL1251_MAX_TEST_LENGTH },
|
|
[WL1251_NL_ATTR_CMD_TEST_ANSWER] = { .type = NLA_U8 },
|
|
[WL1251_NL_ATTR_CMD_IE] = { .type = NLA_U32 },
|
|
[WL1251_NL_ATTR_CMD_IE_LEN] = { .type = NLA_U32 },
|
|
[WL1251_NL_ATTR_CMD_IE_BUFFER] = { .type = NLA_BINARY,
|
|
.len = WL1251_MAX_TEST_LENGTH },
|
|
[WL1251_NL_ATTR_CMD_IE_ANSWER] = { .type = NLA_BINARY,
|
|
.len = WL1251_MAX_TEST_LENGTH },
|
|
[WL1251_NL_ATTR_REG_ADDR] = { .type = NLA_U32 },
|
|
[WL1251_NL_ATTR_REG_VAL] = { .type = NLA_U32 },
|
|
[WL1251_NL_ATTR_NVS_BUFFER] = { .type = NLA_BINARY,
|
|
.len = WL1251_MAX_NVS_LENGTH },
|
|
[WL1251_NL_ATTR_NVS_LEN] = { .type = NLA_U32 },
|
|
[WL1251_NL_ATTR_PLT_MODE] = { .type = NLA_U32 },
|
|
};
|
|
|
|
static struct genl_ops wl1251_nl_ops[] = {
|
|
{
|
|
.cmd = WL1251_NL_CMD_TEST,
|
|
.doit = wl1251_nl_test_cmd,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_INTERROGATE,
|
|
.doit = wl1251_nl_interrogate,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_CONFIGURE,
|
|
.doit = wl1251_nl_configure,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_PHY_REG_READ,
|
|
.doit = wl1251_nl_phy_reg_read,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_NVS_PUSH,
|
|
.doit = wl1251_nl_nvs_push,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_REG_WRITE,
|
|
.doit = wl1251_nl_reg_write,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_REG_READ,
|
|
.doit = wl1251_nl_reg_read,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = WL1251_NL_CMD_SET_PLT_MODE,
|
|
.doit = wl1251_nl_set_plt_mode,
|
|
.policy = wl1251_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
};
|
|
|
|
int wl1251_nl_register(void)
|
|
{
|
|
int err, i;
|
|
|
|
err = genl_register_family(&wl1251_nl_family);
|
|
if (err)
|
|
return err;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(wl1251_nl_ops); i++) {
|
|
err = genl_register_ops(&wl1251_nl_family, &wl1251_nl_ops[i]);
|
|
if (err)
|
|
goto err_out;
|
|
}
|
|
return 0;
|
|
err_out:
|
|
genl_unregister_family(&wl1251_nl_family);
|
|
return err;
|
|
}
|
|
|
|
void wl1251_nl_unregister(void)
|
|
{
|
|
genl_unregister_family(&wl1251_nl_family);
|
|
}
|