cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/wireless/ti/wlcore/testmode.c

/*
 * This file is part of wl1271
 *
 * Copyright (C) 2010 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */
#include "testmode.h"

#include <linux/slab.h>
#include <net/genetlink.h>

#include "wlcore.h"
#include "debug.h"
#include "acx.h"
#include "ps.h"
#include "io.h"


#define WL1271_TM_MAX_DATA_LENGTH 1024


enum wl1271_tm_commands {
	
WL1271_TM_CMD_UNSPEC,
	
WL1271_TM_CMD_TEST,
	
WL1271_TM_CMD_INTERROGATE,
	
WL1271_TM_CMD_CONFIGURE,
	
WL1271_TM_CMD_NVS_PUSH,		/* Not in use. Keep to not break ABI */
	
WL1271_TM_CMD_SET_PLT_MODE,
	
WL1271_TM_CMD_RECOVER,		/* Not in use. Keep to not break ABI */
	
WL1271_TM_CMD_GET_MAC,

	
__WL1271_TM_CMD_AFTER_LAST
};

#define WL1271_TM_CMD_MAX (__WL1271_TM_CMD_AFTER_LAST - 1)


enum wl1271_tm_attrs {
	
WL1271_TM_ATTR_UNSPEC,
	
WL1271_TM_ATTR_CMD_ID,
	
WL1271_TM_ATTR_ANSWER,
	
WL1271_TM_ATTR_DATA,
	
WL1271_TM_ATTR_IE_ID,
	
WL1271_TM_ATTR_PLT_MODE,

	
__WL1271_TM_ATTR_AFTER_LAST
};

#define WL1271_TM_ATTR_MAX (__WL1271_TM_ATTR_AFTER_LAST - 1)


static struct nla_policy wl1271_tm_policy[WL1271_TM_ATTR_MAX + 1] = {
	[WL1271_TM_ATTR_CMD_ID] =	{ .type = NLA_U32 },
	[WL1271_TM_ATTR_ANSWER] =	{ .type = NLA_U8 },
	[WL1271_TM_ATTR_DATA] =		{ .type = NLA_BINARY,
					  .len = WL1271_TM_MAX_DATA_LENGTH },
	[WL1271_TM_ATTR_IE_ID] =	{ .type = NLA_U32 },
	[WL1271_TM_ATTR_PLT_MODE] =	{ .type = NLA_U32 },
};



static int wl1271_tm_cmd_test(struct wl1271 *wl, struct nlattr *tb[]) { int buf_len, ret, len; struct sk_buff *skb; void *buf; u8 answer = 0; wl1271_debug(DEBUG_TESTMODE, "testmode cmd test"); if (!tb[WL1271_TM_ATTR_DATA]) return -EINVAL; buf = nla_data(tb[WL1271_TM_ATTR_DATA]); buf_len = nla_len(tb[WL1271_TM_ATTR_DATA]); if (tb[WL1271_TM_ATTR_ANSWER]) answer = nla_get_u8(tb[WL1271_TM_ATTR_ANSWER]); if (buf_len > sizeof(struct wl1271_command)) return -EMSGSIZE; mutex_lock(&wl->mutex); if (unlikely(wl->state != WLCORE_STATE_ON)) { ret = -EINVAL; goto out; } ret = wl1271_ps_elp_wakeup(wl); if (ret < 0) goto out; ret = wl1271_cmd_test(wl, buf, buf_len, answer); if (ret < 0) { wl1271_warning("testmode cmd test failed: %d", ret); goto out_sleep; } if (answer) { /* If we got bip calibration answer print radio status */ struct wl1271_cmd_cal_p2g *params = (struct wl1271_cmd_cal_p2g *) buf; s16 radio_status = (s16) le16_to_cpu(params->radio_status); if (params->test.id == TEST_CMD_P2G_CAL && radio_status < 0) wl1271_warning("testmode cmd: radio status=%d", radio_status); else wl1271_info("testmode cmd: radio status=%d", radio_status); len = nla_total_size(buf_len); skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, len); if (!skb) { ret = -ENOMEM; goto out_sleep; } if (nla_put(skb, WL1271_TM_ATTR_DATA, buf_len, buf)) { kfree_skb(skb); ret = -EMSGSIZE; goto out_sleep; } ret = cfg80211_testmode_reply(skb); if (ret < 0) goto out_sleep; } out_sleep: wl1271_ps_elp_sleep(wl); out: mutex_unlock(&wl->mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Kalle Valo20158.43%116.67%
Yair Shapira6819.77%233.33%
Eliad Peller6418.60%116.67%
David S. Miller61.74%116.67%
Ido Yariv51.45%116.67%
Total344100.00%6100.00%


static int wl1271_tm_cmd_interrogate(struct wl1271 *wl, struct nlattr *tb[]) { int ret; struct wl1271_command *cmd; struct sk_buff *skb; u8 ie_id; wl1271_debug(DEBUG_TESTMODE, "testmode cmd interrogate"); if (!tb[WL1271_TM_ATTR_IE_ID]) return -EINVAL; ie_id = nla_get_u8(tb[WL1271_TM_ATTR_IE_ID]); mutex_lock(&wl->mutex); if (unlikely(wl->state != WLCORE_STATE_ON)) { ret = -EINVAL; goto out; } ret = wl1271_ps_elp_wakeup(wl); if (ret < 0) goto out; cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) { ret = -ENOMEM; goto out_sleep; } ret = wl1271_cmd_interrogate(wl, ie_id, cmd, sizeof(struct acx_header), sizeof(*cmd)); if (ret < 0) { wl1271_warning("testmode cmd interrogate failed: %d", ret); goto out_free; } skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, sizeof(*cmd)); if (!skb) { ret = -ENOMEM; goto out_free; } if (nla_put(skb, WL1271_TM_ATTR_DATA, sizeof(*cmd), cmd)) { kfree_skb(skb); ret = -EMSGSIZE; goto out_free; } ret = cfg80211_testmode_reply(skb); if (ret < 0) goto out_free; out_free: kfree(cmd); out_sleep: wl1271_ps_elp_sleep(wl); out: mutex_unlock(&wl->mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Kalle Valo15454.42%112.50%
Eliad Peller9734.28%225.00%
Yair Shapira134.59%112.50%
David S. Miller62.12%112.50%
Igal Chernobelsky62.12%112.50%
Ido Yariv51.77%112.50%
Julia Lawall20.71%112.50%
Total283100.00%8100.00%


static int wl1271_tm_cmd_configure(struct wl1271 *wl, struct nlattr *tb[]) { int buf_len, ret; void *buf; u8 ie_id; wl1271_debug(DEBUG_TESTMODE, "testmode cmd configure"); if (!tb[WL1271_TM_ATTR_DATA]) return -EINVAL; if (!tb[WL1271_TM_ATTR_IE_ID]) return -EINVAL; ie_id = nla_get_u8(tb[WL1271_TM_ATTR_IE_ID]); buf = nla_data(tb[WL1271_TM_ATTR_DATA]); buf_len = nla_len(tb[WL1271_TM_ATTR_DATA]); if (buf_len > sizeof(struct wl1271_command)) return -EMSGSIZE; mutex_lock(&wl->mutex); ret = wl1271_cmd_configure(wl, ie_id, buf, buf_len); mutex_unlock(&wl->mutex); if (ret < 0) { wl1271_warning("testmode cmd configure failed: %d", ret); return ret; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kalle Valo154100.00%1100.00%
Total154100.00%1100.00%


static int wl1271_tm_detect_fem(struct wl1271 *wl, struct nlattr *tb[]) { /* return FEM type */ int ret, len; struct sk_buff *skb; ret = wl1271_plt_start(wl, PLT_FEM_DETECT); if (ret < 0) goto out; mutex_lock(&wl->mutex); len = nla_total_size(sizeof(wl->fem_manuf)); skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, len); if (!skb) { ret = -ENOMEM; goto out_mutex; } if (nla_put(skb, WL1271_TM_ATTR_DATA, sizeof(wl->fem_manuf), &wl->fem_manuf)) { kfree_skb(skb); ret = -EMSGSIZE; goto out_mutex; } ret = cfg80211_testmode_reply(skb); out_mutex: mutex_unlock(&wl->mutex); /* We always stop plt after DETECT mode */ wl1271_plt_stop(wl); out: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Yair Shapira158100.00%1100.00%
Total158100.00%1100.00%


static int wl1271_tm_cmd_set_plt_mode(struct wl1271 *wl, struct nlattr *tb[]) { u32 val; int ret; wl1271_debug(DEBUG_TESTMODE, "testmode cmd set plt mode"); if (!tb[WL1271_TM_ATTR_PLT_MODE]) return -EINVAL; val = nla_get_u32(tb[WL1271_TM_ATTR_PLT_MODE]); switch (val) { case PLT_OFF: ret = wl1271_plt_stop(wl); break; case PLT_ON: case PLT_CHIP_AWAKE: ret = wl1271_plt_start(wl, val); break; case PLT_FEM_DETECT: ret = wl1271_tm_detect_fem(wl, tb); break; default: ret = -EINVAL; break; } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Kalle Valo8780.56%125.00%
Yair Shapira2119.44%375.00%
Total108100.00%4100.00%


static int wl12xx_tm_cmd_get_mac(struct wl1271 *wl, struct nlattr *tb[]) { struct sk_buff *skb; u8 mac_addr[ETH_ALEN]; int ret = 0; mutex_lock(&wl->mutex); if (!wl->plt) { ret = -EINVAL; goto out; } if (wl->fuse_oui_addr == 0 && wl->fuse_nic_addr == 0) { ret = -EOPNOTSUPP; goto out; } mac_addr[0] = (u8)(wl->fuse_oui_addr >> 16); mac_addr[1] = (u8)(wl->fuse_oui_addr >> 8); mac_addr[2] = (u8) wl->fuse_oui_addr; mac_addr[3] = (u8)(wl->fuse_nic_addr >> 16); mac_addr[4] = (u8)(wl->fuse_nic_addr >> 8); mac_addr[5] = (u8) wl->fuse_nic_addr; skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, ETH_ALEN); if (!skb) { ret = -ENOMEM; goto out; } if (nla_put(skb, WL1271_TM_ATTR_DATA, ETH_ALEN, mac_addr)) { kfree_skb(skb); ret = -EMSGSIZE; goto out; } ret = cfg80211_testmode_reply(skb); if (ret < 0) goto out; out: mutex_unlock(&wl->mutex); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Luciano Coelho23491.76%125.00%
Yair Shapira135.10%125.00%
David S. Miller62.35%125.00%
Eliad Peller20.78%125.00%
Total255100.00%4100.00%


int wl1271_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif, void *data, int len) { struct wl1271 *wl = hw->priv; struct nlattr *tb[WL1271_TM_ATTR_MAX + 1]; u32 nla_cmd; int err; err = nla_parse(tb, WL1271_TM_ATTR_MAX, data, len, wl1271_tm_policy); if (err) return err; if (!tb[WL1271_TM_ATTR_CMD_ID]) return -EINVAL; nla_cmd = nla_get_u32(tb[WL1271_TM_ATTR_CMD_ID]); /* Only SET_PLT_MODE is allowed in case of mode PLT_CHIP_AWAKE */ if (wl->plt_mode == PLT_CHIP_AWAKE && nla_cmd != WL1271_TM_CMD_SET_PLT_MODE) return -EOPNOTSUPP; switch (nla_cmd) { case WL1271_TM_CMD_TEST: return wl1271_tm_cmd_test(wl, tb); case WL1271_TM_CMD_INTERROGATE: return wl1271_tm_cmd_interrogate(wl, tb); case WL1271_TM_CMD_CONFIGURE: return wl1271_tm_cmd_configure(wl, tb); case WL1271_TM_CMD_SET_PLT_MODE: return wl1271_tm_cmd_set_plt_mode(wl, tb); case WL1271_TM_CMD_GET_MAC: return wl12xx_tm_cmd_get_mac(wl, tb); default: return -EOPNOTSUPP; } }

Contributors

PersonTokensPropCommitsCommitProp
Kalle Valo13275.86%120.00%
Yair Shapira2614.94%120.00%
Luciano Coelho105.75%120.00%
David Spinadel52.87%120.00%
Eliad Peller10.57%120.00%
Total174100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Kalle Valo85652.61%14.35%
Yair Shapira29918.38%521.74%
Luciano Coelho25315.55%313.04%
Eliad Peller16710.26%417.39%
David S. Miller181.11%14.35%
Ido Yariv100.61%14.35%
Igal Chernobelsky60.37%14.35%
David Spinadel50.31%14.35%
Shahar Levi40.25%28.70%
Pontus Fuchs30.18%14.35%
Tejun Heo30.18%14.35%
Julia Lawall20.12%14.35%
Arik Nemtsov10.06%14.35%
Total1627100.00%23100.00%
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