forked from Minki/linux
0d8614b4b9
Use the new static_smps / dynamic_smps feature bits instead of mac80211-internal hw flags. Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2732 lines
73 KiB
C
2732 lines
73 KiB
C
/*
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* mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
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* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
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* Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* TODO:
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* - Add TSF sync and fix IBSS beacon transmission by adding
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* competition for "air time" at TBTT
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* - RX filtering based on filter configuration (data->rx_filter)
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*/
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <net/dst.h>
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#include <net/xfrm.h>
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#include <net/mac80211.h>
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#include <net/ieee80211_radiotap.h>
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#include <linux/if_arp.h>
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#include <linux/rtnetlink.h>
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#include <linux/etherdevice.h>
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#include <linux/platform_device.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include <linux/ktime.h>
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#include <net/genetlink.h>
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#include "mac80211_hwsim.h"
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#define WARN_QUEUE 100
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#define MAX_QUEUE 200
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MODULE_AUTHOR("Jouni Malinen");
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MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
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MODULE_LICENSE("GPL");
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static u32 wmediumd_portid;
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static int radios = 2;
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module_param(radios, int, 0444);
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MODULE_PARM_DESC(radios, "Number of simulated radios");
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static int channels = 1;
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module_param(channels, int, 0444);
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MODULE_PARM_DESC(channels, "Number of concurrent channels");
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static bool paged_rx = false;
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module_param(paged_rx, bool, 0644);
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MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
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static bool rctbl = false;
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module_param(rctbl, bool, 0444);
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MODULE_PARM_DESC(rctbl, "Handle rate control table");
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static bool support_p2p_device = true;
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module_param(support_p2p_device, bool, 0444);
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MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
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/**
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* enum hwsim_regtest - the type of regulatory tests we offer
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*
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* These are the different values you can use for the regtest
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* module parameter. This is useful to help test world roaming
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* and the driver regulatory_hint() call and combinations of these.
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* If you want to do specific alpha2 regulatory domain tests simply
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* use the userspace regulatory request as that will be respected as
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* well without the need of this module parameter. This is designed
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* only for testing the driver regulatory request, world roaming
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* and all possible combinations.
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*
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* @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
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* this is the default value.
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* @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
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* hint, only one driver regulatory hint will be sent as such the
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* secondary radios are expected to follow.
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* @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
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* request with all radios reporting the same regulatory domain.
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* @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
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* different regulatory domains requests. Expected behaviour is for
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* an intersection to occur but each device will still use their
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* respective regulatory requested domains. Subsequent radios will
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* use the resulting intersection.
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* @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
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* this by using a custom beacon-capable regulatory domain for the first
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* radio. All other device world roam.
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* @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
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* domain requests. All radios will adhere to this custom world regulatory
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* domain.
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* @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
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* domain requests. The first radio will adhere to the first custom world
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* regulatory domain, the second one to the second custom world regulatory
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* domain. All other devices will world roam.
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* @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
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* settings, only the first radio will send a regulatory domain request
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* and use strict settings. The rest of the radios are expected to follow.
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* @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
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* settings. All radios will adhere to this.
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* @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
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* domain settings, combined with secondary driver regulatory domain
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* settings. The first radio will get a strict regulatory domain setting
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* using the first driver regulatory request and the second radio will use
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* non-strict settings using the second driver regulatory request. All
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* other devices should follow the intersection created between the
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* first two.
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* @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
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* at least 6 radios for a complete test. We will test in this order:
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* 1 - driver custom world regulatory domain
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* 2 - second custom world regulatory domain
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* 3 - first driver regulatory domain request
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* 4 - second driver regulatory domain request
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* 5 - strict regulatory domain settings using the third driver regulatory
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* domain request
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* 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
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* regulatory requests.
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*/
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enum hwsim_regtest {
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HWSIM_REGTEST_DISABLED = 0,
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HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
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HWSIM_REGTEST_DRIVER_REG_ALL = 2,
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HWSIM_REGTEST_DIFF_COUNTRY = 3,
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HWSIM_REGTEST_WORLD_ROAM = 4,
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HWSIM_REGTEST_CUSTOM_WORLD = 5,
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HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
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HWSIM_REGTEST_STRICT_FOLLOW = 7,
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HWSIM_REGTEST_STRICT_ALL = 8,
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HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
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HWSIM_REGTEST_ALL = 10,
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};
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/* Set to one of the HWSIM_REGTEST_* values above */
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static int regtest = HWSIM_REGTEST_DISABLED;
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module_param(regtest, int, 0444);
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MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
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static const char *hwsim_alpha2s[] = {
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"FI",
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"AL",
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"US",
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"DE",
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"JP",
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"AL",
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};
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static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
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.n_reg_rules = 4,
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.alpha2 = "99",
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.reg_rules = {
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REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
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REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
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REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
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REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
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}
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};
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static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
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.n_reg_rules = 2,
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.alpha2 = "99",
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.reg_rules = {
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REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
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REG_RULE(5725-10, 5850+10, 40, 0, 30,
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NL80211_RRF_NO_IR),
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}
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};
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static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
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&hwsim_world_regdom_custom_01,
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&hwsim_world_regdom_custom_02,
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};
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struct hwsim_vif_priv {
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u32 magic;
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u8 bssid[ETH_ALEN];
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bool assoc;
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bool bcn_en;
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u16 aid;
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};
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#define HWSIM_VIF_MAGIC 0x69537748
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static inline void hwsim_check_magic(struct ieee80211_vif *vif)
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{
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struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
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WARN(vp->magic != HWSIM_VIF_MAGIC,
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"Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
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vif, vp->magic, vif->addr, vif->type, vif->p2p);
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}
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static inline void hwsim_set_magic(struct ieee80211_vif *vif)
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{
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struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
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vp->magic = HWSIM_VIF_MAGIC;
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}
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static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
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{
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struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
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vp->magic = 0;
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}
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struct hwsim_sta_priv {
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u32 magic;
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};
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#define HWSIM_STA_MAGIC 0x6d537749
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static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
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{
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struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
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WARN_ON(sp->magic != HWSIM_STA_MAGIC);
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}
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static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
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{
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struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
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sp->magic = HWSIM_STA_MAGIC;
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}
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static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
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{
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struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
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sp->magic = 0;
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}
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struct hwsim_chanctx_priv {
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u32 magic;
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};
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#define HWSIM_CHANCTX_MAGIC 0x6d53774a
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static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
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{
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struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
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WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
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}
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static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
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{
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struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
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cp->magic = HWSIM_CHANCTX_MAGIC;
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}
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static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
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{
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struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
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cp->magic = 0;
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}
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static struct class *hwsim_class;
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static struct net_device *hwsim_mon; /* global monitor netdev */
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#define CHAN2G(_freq) { \
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.band = IEEE80211_BAND_2GHZ, \
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.center_freq = (_freq), \
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.hw_value = (_freq), \
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.max_power = 20, \
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}
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#define CHAN5G(_freq) { \
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.band = IEEE80211_BAND_5GHZ, \
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.center_freq = (_freq), \
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.hw_value = (_freq), \
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.max_power = 20, \
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}
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static const struct ieee80211_channel hwsim_channels_2ghz[] = {
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CHAN2G(2412), /* Channel 1 */
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CHAN2G(2417), /* Channel 2 */
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CHAN2G(2422), /* Channel 3 */
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CHAN2G(2427), /* Channel 4 */
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CHAN2G(2432), /* Channel 5 */
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CHAN2G(2437), /* Channel 6 */
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CHAN2G(2442), /* Channel 7 */
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CHAN2G(2447), /* Channel 8 */
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CHAN2G(2452), /* Channel 9 */
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CHAN2G(2457), /* Channel 10 */
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CHAN2G(2462), /* Channel 11 */
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CHAN2G(2467), /* Channel 12 */
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CHAN2G(2472), /* Channel 13 */
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CHAN2G(2484), /* Channel 14 */
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};
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static const struct ieee80211_channel hwsim_channels_5ghz[] = {
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CHAN5G(5180), /* Channel 36 */
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CHAN5G(5200), /* Channel 40 */
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CHAN5G(5220), /* Channel 44 */
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CHAN5G(5240), /* Channel 48 */
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CHAN5G(5260), /* Channel 52 */
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CHAN5G(5280), /* Channel 56 */
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CHAN5G(5300), /* Channel 60 */
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CHAN5G(5320), /* Channel 64 */
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CHAN5G(5500), /* Channel 100 */
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CHAN5G(5520), /* Channel 104 */
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CHAN5G(5540), /* Channel 108 */
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CHAN5G(5560), /* Channel 112 */
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CHAN5G(5580), /* Channel 116 */
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CHAN5G(5600), /* Channel 120 */
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CHAN5G(5620), /* Channel 124 */
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CHAN5G(5640), /* Channel 128 */
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CHAN5G(5660), /* Channel 132 */
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CHAN5G(5680), /* Channel 136 */
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CHAN5G(5700), /* Channel 140 */
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CHAN5G(5745), /* Channel 149 */
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CHAN5G(5765), /* Channel 153 */
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CHAN5G(5785), /* Channel 157 */
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CHAN5G(5805), /* Channel 161 */
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CHAN5G(5825), /* Channel 165 */
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};
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static const struct ieee80211_rate hwsim_rates[] = {
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{ .bitrate = 10 },
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{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
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{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
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{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
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{ .bitrate = 60 },
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{ .bitrate = 90 },
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{ .bitrate = 120 },
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{ .bitrate = 180 },
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{ .bitrate = 240 },
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{ .bitrate = 360 },
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{ .bitrate = 480 },
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{ .bitrate = 540 }
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};
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static const struct ieee80211_iface_limit hwsim_if_limits[] = {
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{ .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) },
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{ .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) |
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BIT(NL80211_IFTYPE_P2P_CLIENT) |
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#ifdef CONFIG_MAC80211_MESH
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BIT(NL80211_IFTYPE_MESH_POINT) |
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#endif
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BIT(NL80211_IFTYPE_AP) |
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BIT(NL80211_IFTYPE_P2P_GO) },
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/* must be last, see hwsim_if_comb */
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{ .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }
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};
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static const struct ieee80211_iface_limit hwsim_if_dfs_limits[] = {
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{ .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
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};
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static const struct ieee80211_iface_combination hwsim_if_comb[] = {
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{
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.limits = hwsim_if_limits,
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/* remove the last entry which is P2P_DEVICE */
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.n_limits = ARRAY_SIZE(hwsim_if_limits) - 1,
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.max_interfaces = 2048,
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.num_different_channels = 1,
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},
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{
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.limits = hwsim_if_dfs_limits,
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.n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
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.max_interfaces = 8,
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.num_different_channels = 1,
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.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
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BIT(NL80211_CHAN_WIDTH_20) |
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BIT(NL80211_CHAN_WIDTH_40) |
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BIT(NL80211_CHAN_WIDTH_80) |
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BIT(NL80211_CHAN_WIDTH_160),
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}
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};
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static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = {
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{
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.limits = hwsim_if_limits,
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.n_limits = ARRAY_SIZE(hwsim_if_limits),
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.max_interfaces = 2048,
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.num_different_channels = 1,
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},
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{
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.limits = hwsim_if_dfs_limits,
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.n_limits = ARRAY_SIZE(hwsim_if_dfs_limits),
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.max_interfaces = 8,
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.num_different_channels = 1,
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.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
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BIT(NL80211_CHAN_WIDTH_20) |
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BIT(NL80211_CHAN_WIDTH_40) |
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BIT(NL80211_CHAN_WIDTH_80) |
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BIT(NL80211_CHAN_WIDTH_160),
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}
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};
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static spinlock_t hwsim_radio_lock;
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static struct list_head hwsim_radios;
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static int hwsim_radio_idx;
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static struct platform_driver mac80211_hwsim_driver = {
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.driver = {
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.name = "mac80211_hwsim",
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.owner = THIS_MODULE,
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},
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};
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struct mac80211_hwsim_data {
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struct list_head list;
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struct ieee80211_hw *hw;
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struct device *dev;
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struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
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struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
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struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
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struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
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struct ieee80211_iface_combination if_combination;
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struct mac_address addresses[2];
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int channels, idx;
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bool use_chanctx;
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struct ieee80211_channel *tmp_chan;
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struct delayed_work roc_done;
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struct delayed_work hw_scan;
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struct cfg80211_scan_request *hw_scan_request;
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struct ieee80211_vif *hw_scan_vif;
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int scan_chan_idx;
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struct ieee80211_channel *channel;
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u64 beacon_int /* beacon interval in us */;
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unsigned int rx_filter;
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bool started, idle, scanning;
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struct mutex mutex;
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struct tasklet_hrtimer beacon_timer;
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enum ps_mode {
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PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
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} ps;
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bool ps_poll_pending;
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struct dentry *debugfs;
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struct sk_buff_head pending; /* packets pending */
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/*
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* Only radios in the same group can communicate together (the
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* channel has to match too). Each bit represents a group. A
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* radio can be in more then one group.
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*/
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u64 group;
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int power_level;
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/* difference between this hw's clock and the real clock, in usecs */
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s64 tsf_offset;
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s64 bcn_delta;
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/* absolute beacon transmission time. Used to cover up "tx" delay. */
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u64 abs_bcn_ts;
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};
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struct hwsim_radiotap_hdr {
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struct ieee80211_radiotap_header hdr;
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__le64 rt_tsft;
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u8 rt_flags;
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u8 rt_rate;
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__le16 rt_channel;
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__le16 rt_chbitmask;
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} __packed;
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|
|
|
struct hwsim_radiotap_ack_hdr {
|
|
struct ieee80211_radiotap_header hdr;
|
|
u8 rt_flags;
|
|
u8 pad;
|
|
__le16 rt_channel;
|
|
__le16 rt_chbitmask;
|
|
} __packed;
|
|
|
|
/* MAC80211_HWSIM netlinf family */
|
|
static struct genl_family hwsim_genl_family = {
|
|
.id = GENL_ID_GENERATE,
|
|
.hdrsize = 0,
|
|
.name = "MAC80211_HWSIM",
|
|
.version = 1,
|
|
.maxattr = HWSIM_ATTR_MAX,
|
|
};
|
|
|
|
/* MAC80211_HWSIM netlink policy */
|
|
|
|
static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
|
|
[HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
|
|
[HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, .len = ETH_ALEN },
|
|
[HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
|
|
.len = IEEE80211_MAX_DATA_LEN },
|
|
[HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
|
|
[HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
|
|
[HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
|
|
[HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
|
|
.len = IEEE80211_TX_MAX_RATES *
|
|
sizeof(struct hwsim_tx_rate)},
|
|
[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
|
|
[HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
|
|
[HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
|
|
[HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
|
|
[HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
|
|
[HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
|
|
[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
|
|
};
|
|
|
|
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_channel *chan);
|
|
|
|
/* sysfs attributes */
|
|
static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
|
|
struct sk_buff *skb;
|
|
struct ieee80211_pspoll *pspoll;
|
|
|
|
if (!vp->assoc)
|
|
return;
|
|
|
|
wiphy_debug(data->hw->wiphy,
|
|
"%s: send PS-Poll to %pM for aid %d\n",
|
|
__func__, vp->bssid, vp->aid);
|
|
|
|
skb = dev_alloc_skb(sizeof(*pspoll));
|
|
if (!skb)
|
|
return;
|
|
pspoll = (void *) skb_put(skb, sizeof(*pspoll));
|
|
pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
|
|
IEEE80211_STYPE_PSPOLL |
|
|
IEEE80211_FCTL_PM);
|
|
pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
|
|
memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
|
|
memcpy(pspoll->ta, mac, ETH_ALEN);
|
|
|
|
rcu_read_lock();
|
|
mac80211_hwsim_tx_frame(data->hw, skb,
|
|
rcu_dereference(vif->chanctx_conf)->def.chan);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
|
|
struct ieee80211_vif *vif, int ps)
|
|
{
|
|
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
|
|
struct sk_buff *skb;
|
|
struct ieee80211_hdr *hdr;
|
|
|
|
if (!vp->assoc)
|
|
return;
|
|
|
|
wiphy_debug(data->hw->wiphy,
|
|
"%s: send data::nullfunc to %pM ps=%d\n",
|
|
__func__, vp->bssid, ps);
|
|
|
|
skb = dev_alloc_skb(sizeof(*hdr));
|
|
if (!skb)
|
|
return;
|
|
hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
|
|
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
|
|
IEEE80211_STYPE_NULLFUNC |
|
|
(ps ? IEEE80211_FCTL_PM : 0));
|
|
hdr->duration_id = cpu_to_le16(0);
|
|
memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
|
|
memcpy(hdr->addr2, mac, ETH_ALEN);
|
|
memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
|
|
|
|
rcu_read_lock();
|
|
mac80211_hwsim_tx_frame(data->hw, skb,
|
|
rcu_dereference(vif->chanctx_conf)->def.chan);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
|
|
static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
hwsim_send_nullfunc(data, mac, vif, 1);
|
|
}
|
|
|
|
static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
hwsim_send_nullfunc(data, mac, vif, 0);
|
|
}
|
|
|
|
static int hwsim_fops_ps_read(void *dat, u64 *val)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
*val = data->ps;
|
|
return 0;
|
|
}
|
|
|
|
static int hwsim_fops_ps_write(void *dat, u64 val)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
enum ps_mode old_ps;
|
|
|
|
if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
|
|
val != PS_MANUAL_POLL)
|
|
return -EINVAL;
|
|
|
|
old_ps = data->ps;
|
|
data->ps = val;
|
|
|
|
if (val == PS_MANUAL_POLL) {
|
|
ieee80211_iterate_active_interfaces(data->hw,
|
|
IEEE80211_IFACE_ITER_NORMAL,
|
|
hwsim_send_ps_poll, data);
|
|
data->ps_poll_pending = true;
|
|
} else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
|
|
ieee80211_iterate_active_interfaces(data->hw,
|
|
IEEE80211_IFACE_ITER_NORMAL,
|
|
hwsim_send_nullfunc_ps,
|
|
data);
|
|
} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
|
|
ieee80211_iterate_active_interfaces(data->hw,
|
|
IEEE80211_IFACE_ITER_NORMAL,
|
|
hwsim_send_nullfunc_no_ps,
|
|
data);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
|
|
"%llu\n");
|
|
|
|
static int hwsim_write_simulate_radar(void *dat, u64 val)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
|
|
ieee80211_radar_detected(data->hw);
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(hwsim_simulate_radar, NULL,
|
|
hwsim_write_simulate_radar, "%llu\n");
|
|
|
|
static int hwsim_fops_group_read(void *dat, u64 *val)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
*val = data->group;
|
|
return 0;
|
|
}
|
|
|
|
static int hwsim_fops_group_write(void *dat, u64 val)
|
|
{
|
|
struct mac80211_hwsim_data *data = dat;
|
|
data->group = val;
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
|
|
hwsim_fops_group_read, hwsim_fops_group_write,
|
|
"%llx\n");
|
|
|
|
static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
/* TODO: allow packet injection */
|
|
dev_kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static inline u64 mac80211_hwsim_get_tsf_raw(void)
|
|
{
|
|
return ktime_to_us(ktime_get_real());
|
|
}
|
|
|
|
static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
|
|
{
|
|
u64 now = mac80211_hwsim_get_tsf_raw();
|
|
return cpu_to_le64(now + data->tsf_offset);
|
|
}
|
|
|
|
static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
|
|
}
|
|
|
|
static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif, u64 tsf)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
u64 now = mac80211_hwsim_get_tsf(hw, vif);
|
|
u32 bcn_int = data->beacon_int;
|
|
u64 delta = abs64(tsf - now);
|
|
|
|
/* adjust after beaconing with new timestamp at old TBTT */
|
|
if (tsf > now) {
|
|
data->tsf_offset += delta;
|
|
data->bcn_delta = do_div(delta, bcn_int);
|
|
} else {
|
|
data->tsf_offset -= delta;
|
|
data->bcn_delta = -do_div(delta, bcn_int);
|
|
}
|
|
}
|
|
|
|
static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
|
|
struct sk_buff *tx_skb,
|
|
struct ieee80211_channel *chan)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
struct sk_buff *skb;
|
|
struct hwsim_radiotap_hdr *hdr;
|
|
u16 flags;
|
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
|
|
struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
|
|
|
|
if (!netif_running(hwsim_mon))
|
|
return;
|
|
|
|
skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
|
|
if (skb == NULL)
|
|
return;
|
|
|
|
hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
|
|
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
|
|
hdr->hdr.it_pad = 0;
|
|
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
|
|
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
|
|
(1 << IEEE80211_RADIOTAP_RATE) |
|
|
(1 << IEEE80211_RADIOTAP_TSFT) |
|
|
(1 << IEEE80211_RADIOTAP_CHANNEL));
|
|
hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
|
|
hdr->rt_flags = 0;
|
|
hdr->rt_rate = txrate->bitrate / 5;
|
|
hdr->rt_channel = cpu_to_le16(chan->center_freq);
|
|
flags = IEEE80211_CHAN_2GHZ;
|
|
if (txrate->flags & IEEE80211_RATE_ERP_G)
|
|
flags |= IEEE80211_CHAN_OFDM;
|
|
else
|
|
flags |= IEEE80211_CHAN_CCK;
|
|
hdr->rt_chbitmask = cpu_to_le16(flags);
|
|
|
|
skb->dev = hwsim_mon;
|
|
skb_set_mac_header(skb, 0);
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
skb->protocol = htons(ETH_P_802_2);
|
|
memset(skb->cb, 0, sizeof(skb->cb));
|
|
netif_rx(skb);
|
|
}
|
|
|
|
|
|
static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
|
|
const u8 *addr)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct hwsim_radiotap_ack_hdr *hdr;
|
|
u16 flags;
|
|
struct ieee80211_hdr *hdr11;
|
|
|
|
if (!netif_running(hwsim_mon))
|
|
return;
|
|
|
|
skb = dev_alloc_skb(100);
|
|
if (skb == NULL)
|
|
return;
|
|
|
|
hdr = (struct hwsim_radiotap_ack_hdr *) skb_put(skb, sizeof(*hdr));
|
|
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
|
|
hdr->hdr.it_pad = 0;
|
|
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
|
|
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
|
|
(1 << IEEE80211_RADIOTAP_CHANNEL));
|
|
hdr->rt_flags = 0;
|
|
hdr->pad = 0;
|
|
hdr->rt_channel = cpu_to_le16(chan->center_freq);
|
|
flags = IEEE80211_CHAN_2GHZ;
|
|
hdr->rt_chbitmask = cpu_to_le16(flags);
|
|
|
|
hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
|
|
hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
|
|
IEEE80211_STYPE_ACK);
|
|
hdr11->duration_id = cpu_to_le16(0);
|
|
memcpy(hdr11->addr1, addr, ETH_ALEN);
|
|
|
|
skb->dev = hwsim_mon;
|
|
skb_set_mac_header(skb, 0);
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
skb->pkt_type = PACKET_OTHERHOST;
|
|
skb->protocol = htons(ETH_P_802_2);
|
|
memset(skb->cb, 0, sizeof(skb->cb));
|
|
netif_rx(skb);
|
|
}
|
|
|
|
struct mac80211_hwsim_addr_match_data {
|
|
u8 addr[ETH_ALEN];
|
|
bool ret;
|
|
};
|
|
|
|
static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_addr_match_data *md = data;
|
|
|
|
if (memcmp(mac, md->addr, ETH_ALEN) == 0)
|
|
md->ret = true;
|
|
}
|
|
|
|
static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
|
|
const u8 *addr)
|
|
{
|
|
struct mac80211_hwsim_addr_match_data md = {
|
|
.ret = false,
|
|
};
|
|
|
|
memcpy(md.addr, addr, ETH_ALEN);
|
|
|
|
ieee80211_iterate_active_interfaces_atomic(data->hw,
|
|
IEEE80211_IFACE_ITER_NORMAL,
|
|
mac80211_hwsim_addr_iter,
|
|
&md);
|
|
|
|
return md.ret;
|
|
}
|
|
|
|
static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
|
|
struct sk_buff *skb)
|
|
{
|
|
switch (data->ps) {
|
|
case PS_DISABLED:
|
|
return true;
|
|
case PS_ENABLED:
|
|
return false;
|
|
case PS_AUTO_POLL:
|
|
/* TODO: accept (some) Beacons by default and other frames only
|
|
* if pending PS-Poll has been sent */
|
|
return true;
|
|
case PS_MANUAL_POLL:
|
|
/* Allow unicast frames to own address if there is a pending
|
|
* PS-Poll */
|
|
if (data->ps_poll_pending &&
|
|
mac80211_hwsim_addr_match(data, skb->data + 4)) {
|
|
data->ps_poll_pending = false;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
|
|
struct sk_buff *my_skb,
|
|
int dst_portid)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
|
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
|
|
void *msg_head;
|
|
unsigned int hwsim_flags = 0;
|
|
int i;
|
|
struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
|
|
|
|
if (data->ps != PS_DISABLED)
|
|
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
|
|
/* If the queue contains MAX_QUEUE skb's drop some */
|
|
if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
|
|
/* Droping until WARN_QUEUE level */
|
|
while (skb_queue_len(&data->pending) >= WARN_QUEUE)
|
|
skb_dequeue(&data->pending);
|
|
}
|
|
|
|
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (skb == NULL)
|
|
goto nla_put_failure;
|
|
|
|
msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
|
|
HWSIM_CMD_FRAME);
|
|
if (msg_head == NULL) {
|
|
printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
|
|
ETH_ALEN, data->addresses[1].addr))
|
|
goto nla_put_failure;
|
|
|
|
/* We get the skb->data */
|
|
if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
|
|
goto nla_put_failure;
|
|
|
|
/* We get the flags for this transmission, and we translate them to
|
|
wmediumd flags */
|
|
|
|
if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
|
|
hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
|
|
|
|
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
|
|
hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
|
|
|
|
if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
|
|
goto nla_put_failure;
|
|
|
|
/* We get the tx control (rate and retries) info*/
|
|
|
|
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
|
|
tx_attempts[i].idx = info->status.rates[i].idx;
|
|
tx_attempts[i].count = info->status.rates[i].count;
|
|
}
|
|
|
|
if (nla_put(skb, HWSIM_ATTR_TX_INFO,
|
|
sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
|
|
tx_attempts))
|
|
goto nla_put_failure;
|
|
|
|
/* We create a cookie to identify this skb */
|
|
if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(skb, msg_head);
|
|
genlmsg_unicast(&init_net, skb, dst_portid);
|
|
|
|
/* Enqueue the packet */
|
|
skb_queue_tail(&data->pending, my_skb);
|
|
return;
|
|
|
|
nla_put_failure:
|
|
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
|
|
}
|
|
|
|
static bool hwsim_chans_compat(struct ieee80211_channel *c1,
|
|
struct ieee80211_channel *c2)
|
|
{
|
|
if (!c1 || !c2)
|
|
return false;
|
|
|
|
return c1->center_freq == c2->center_freq;
|
|
}
|
|
|
|
struct tx_iter_data {
|
|
struct ieee80211_channel *channel;
|
|
bool receive;
|
|
};
|
|
|
|
static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct tx_iter_data *data = _data;
|
|
|
|
if (!vif->chanctx_conf)
|
|
return;
|
|
|
|
if (!hwsim_chans_compat(data->channel,
|
|
rcu_dereference(vif->chanctx_conf)->def.chan))
|
|
return;
|
|
|
|
data->receive = true;
|
|
}
|
|
|
|
static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_channel *chan)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv, *data2;
|
|
bool ack = false;
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
|
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
|
|
struct ieee80211_rx_status rx_status;
|
|
u64 now;
|
|
|
|
memset(&rx_status, 0, sizeof(rx_status));
|
|
rx_status.flag |= RX_FLAG_MACTIME_START;
|
|
rx_status.freq = chan->center_freq;
|
|
rx_status.band = chan->band;
|
|
if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
|
|
rx_status.rate_idx =
|
|
ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
|
|
rx_status.vht_nss =
|
|
ieee80211_rate_get_vht_nss(&info->control.rates[0]);
|
|
rx_status.flag |= RX_FLAG_VHT;
|
|
} else {
|
|
rx_status.rate_idx = info->control.rates[0].idx;
|
|
if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
|
|
rx_status.flag |= RX_FLAG_HT;
|
|
}
|
|
if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
|
|
rx_status.flag |= RX_FLAG_40MHZ;
|
|
if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
|
|
rx_status.flag |= RX_FLAG_SHORT_GI;
|
|
/* TODO: simulate real signal strength (and optional packet loss) */
|
|
rx_status.signal = data->power_level - 50;
|
|
|
|
if (data->ps != PS_DISABLED)
|
|
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
|
|
|
|
/* release the skb's source info */
|
|
skb_orphan(skb);
|
|
skb_dst_drop(skb);
|
|
skb->mark = 0;
|
|
secpath_reset(skb);
|
|
nf_reset(skb);
|
|
|
|
/*
|
|
* Get absolute mactime here so all HWs RX at the "same time", and
|
|
* absolute TX time for beacon mactime so the timestamp matches.
|
|
* Giving beacons a different mactime than non-beacons looks messy, but
|
|
* it helps the Toffset be exact and a ~10us mactime discrepancy
|
|
* probably doesn't really matter.
|
|
*/
|
|
if (ieee80211_is_beacon(hdr->frame_control) ||
|
|
ieee80211_is_probe_resp(hdr->frame_control))
|
|
now = data->abs_bcn_ts;
|
|
else
|
|
now = mac80211_hwsim_get_tsf_raw();
|
|
|
|
/* Copy skb to all enabled radios that are on the current frequency */
|
|
spin_lock(&hwsim_radio_lock);
|
|
list_for_each_entry(data2, &hwsim_radios, list) {
|
|
struct sk_buff *nskb;
|
|
struct tx_iter_data tx_iter_data = {
|
|
.receive = false,
|
|
.channel = chan,
|
|
};
|
|
|
|
if (data == data2)
|
|
continue;
|
|
|
|
if (!data2->started || (data2->idle && !data2->tmp_chan) ||
|
|
!hwsim_ps_rx_ok(data2, skb))
|
|
continue;
|
|
|
|
if (!(data->group & data2->group))
|
|
continue;
|
|
|
|
if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
|
|
!hwsim_chans_compat(chan, data2->channel)) {
|
|
ieee80211_iterate_active_interfaces_atomic(
|
|
data2->hw, IEEE80211_IFACE_ITER_NORMAL,
|
|
mac80211_hwsim_tx_iter, &tx_iter_data);
|
|
if (!tx_iter_data.receive)
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* reserve some space for our vendor and the normal
|
|
* radiotap header, since we're copying anyway
|
|
*/
|
|
if (skb->len < PAGE_SIZE && paged_rx) {
|
|
struct page *page = alloc_page(GFP_ATOMIC);
|
|
|
|
if (!page)
|
|
continue;
|
|
|
|
nskb = dev_alloc_skb(128);
|
|
if (!nskb) {
|
|
__free_page(page);
|
|
continue;
|
|
}
|
|
|
|
memcpy(page_address(page), skb->data, skb->len);
|
|
skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
|
|
} else {
|
|
nskb = skb_copy(skb, GFP_ATOMIC);
|
|
if (!nskb)
|
|
continue;
|
|
}
|
|
|
|
if (mac80211_hwsim_addr_match(data2, hdr->addr1))
|
|
ack = true;
|
|
|
|
rx_status.mactime = now + data2->tsf_offset;
|
|
|
|
memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
|
|
ieee80211_rx_irqsafe(data2->hw, nskb);
|
|
}
|
|
spin_unlock(&hwsim_radio_lock);
|
|
|
|
return ack;
|
|
}
|
|
|
|
static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
|
|
struct ieee80211_tx_control *control,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
struct ieee80211_channel *channel;
|
|
bool ack;
|
|
u32 _portid;
|
|
|
|
if (WARN_ON(skb->len < 10)) {
|
|
/* Should not happen; just a sanity check for addr1 use */
|
|
ieee80211_free_txskb(hw, skb);
|
|
return;
|
|
}
|
|
|
|
if (!data->use_chanctx) {
|
|
channel = data->channel;
|
|
} else if (txi->hw_queue == 4) {
|
|
channel = data->tmp_chan;
|
|
} else {
|
|
chanctx_conf = rcu_dereference(txi->control.vif->chanctx_conf);
|
|
if (chanctx_conf)
|
|
channel = chanctx_conf->def.chan;
|
|
else
|
|
channel = NULL;
|
|
}
|
|
|
|
if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
|
|
ieee80211_free_txskb(hw, skb);
|
|
return;
|
|
}
|
|
|
|
if (data->idle && !data->tmp_chan) {
|
|
wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
|
|
ieee80211_free_txskb(hw, skb);
|
|
return;
|
|
}
|
|
|
|
if (txi->control.vif)
|
|
hwsim_check_magic(txi->control.vif);
|
|
if (control->sta)
|
|
hwsim_check_sta_magic(control->sta);
|
|
|
|
if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
|
|
ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
|
|
txi->control.rates,
|
|
ARRAY_SIZE(txi->control.rates));
|
|
|
|
txi->rate_driver_data[0] = channel;
|
|
mac80211_hwsim_monitor_rx(hw, skb, channel);
|
|
|
|
/* wmediumd mode check */
|
|
_portid = ACCESS_ONCE(wmediumd_portid);
|
|
|
|
if (_portid)
|
|
return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
|
|
|
|
/* NO wmediumd detected, perfect medium simulation */
|
|
ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
|
|
|
|
if (ack && skb->len >= 16) {
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
|
|
mac80211_hwsim_monitor_ack(channel, hdr->addr2);
|
|
}
|
|
|
|
ieee80211_tx_info_clear_status(txi);
|
|
|
|
/* frame was transmitted at most favorable rate at first attempt */
|
|
txi->control.rates[0].count = 1;
|
|
txi->control.rates[1].idx = -1;
|
|
|
|
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
|
|
txi->flags |= IEEE80211_TX_STAT_ACK;
|
|
ieee80211_tx_status_irqsafe(hw, skb);
|
|
}
|
|
|
|
|
|
static int mac80211_hwsim_start(struct ieee80211_hw *hw)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
wiphy_debug(hw->wiphy, "%s\n", __func__);
|
|
data->started = true;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
data->started = false;
|
|
tasklet_hrtimer_cancel(&data->beacon_timer);
|
|
wiphy_debug(hw->wiphy, "%s\n", __func__);
|
|
}
|
|
|
|
|
|
static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
|
|
__func__, ieee80211_vif_type_p2p(vif),
|
|
vif->addr);
|
|
hwsim_set_magic(vif);
|
|
|
|
vif->cab_queue = 0;
|
|
vif->hw_queue[IEEE80211_AC_VO] = 0;
|
|
vif->hw_queue[IEEE80211_AC_VI] = 1;
|
|
vif->hw_queue[IEEE80211_AC_BE] = 2;
|
|
vif->hw_queue[IEEE80211_AC_BK] = 3;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
enum nl80211_iftype newtype,
|
|
bool newp2p)
|
|
{
|
|
newtype = ieee80211_iftype_p2p(newtype, newp2p);
|
|
wiphy_debug(hw->wiphy,
|
|
"%s (old type=%d, new type=%d, mac_addr=%pM)\n",
|
|
__func__, ieee80211_vif_type_p2p(vif),
|
|
newtype, vif->addr);
|
|
hwsim_check_magic(vif);
|
|
|
|
/*
|
|
* interface may change from non-AP to AP in
|
|
* which case this needs to be set up again
|
|
*/
|
|
vif->cab_queue = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mac80211_hwsim_remove_interface(
|
|
struct ieee80211_hw *hw, struct ieee80211_vif *vif)
|
|
{
|
|
wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
|
|
__func__, ieee80211_vif_type_p2p(vif),
|
|
vif->addr);
|
|
hwsim_check_magic(vif);
|
|
hwsim_clear_magic(vif);
|
|
}
|
|
|
|
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_channel *chan)
|
|
{
|
|
u32 _pid = ACCESS_ONCE(wmediumd_portid);
|
|
|
|
if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE) {
|
|
struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
|
|
ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
|
|
txi->control.rates,
|
|
ARRAY_SIZE(txi->control.rates));
|
|
}
|
|
|
|
mac80211_hwsim_monitor_rx(hw, skb, chan);
|
|
|
|
if (_pid)
|
|
return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
|
|
|
|
mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_data *data = arg;
|
|
struct ieee80211_hw *hw = data->hw;
|
|
struct ieee80211_tx_info *info;
|
|
struct ieee80211_rate *txrate;
|
|
struct ieee80211_mgmt *mgmt;
|
|
struct sk_buff *skb;
|
|
|
|
hwsim_check_magic(vif);
|
|
|
|
if (vif->type != NL80211_IFTYPE_AP &&
|
|
vif->type != NL80211_IFTYPE_MESH_POINT &&
|
|
vif->type != NL80211_IFTYPE_ADHOC)
|
|
return;
|
|
|
|
skb = ieee80211_beacon_get(hw, vif);
|
|
if (skb == NULL)
|
|
return;
|
|
info = IEEE80211_SKB_CB(skb);
|
|
if (hw->flags & IEEE80211_HW_SUPPORTS_RC_TABLE)
|
|
ieee80211_get_tx_rates(vif, NULL, skb,
|
|
info->control.rates,
|
|
ARRAY_SIZE(info->control.rates));
|
|
|
|
txrate = ieee80211_get_tx_rate(hw, info);
|
|
|
|
mgmt = (struct ieee80211_mgmt *) skb->data;
|
|
/* fake header transmission time */
|
|
data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
|
|
mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
|
|
data->tsf_offset +
|
|
24 * 8 * 10 / txrate->bitrate);
|
|
|
|
mac80211_hwsim_tx_frame(hw, skb,
|
|
rcu_dereference(vif->chanctx_conf)->def.chan);
|
|
|
|
if (vif->csa_active && ieee80211_csa_is_complete(vif))
|
|
ieee80211_csa_finish(vif);
|
|
}
|
|
|
|
static enum hrtimer_restart
|
|
mac80211_hwsim_beacon(struct hrtimer *timer)
|
|
{
|
|
struct mac80211_hwsim_data *data =
|
|
container_of(timer, struct mac80211_hwsim_data,
|
|
beacon_timer.timer);
|
|
struct ieee80211_hw *hw = data->hw;
|
|
u64 bcn_int = data->beacon_int;
|
|
ktime_t next_bcn;
|
|
|
|
if (!data->started)
|
|
goto out;
|
|
|
|
ieee80211_iterate_active_interfaces_atomic(
|
|
hw, IEEE80211_IFACE_ITER_NORMAL,
|
|
mac80211_hwsim_beacon_tx, data);
|
|
|
|
/* beacon at new TBTT + beacon interval */
|
|
if (data->bcn_delta) {
|
|
bcn_int -= data->bcn_delta;
|
|
data->bcn_delta = 0;
|
|
}
|
|
|
|
next_bcn = ktime_add(hrtimer_get_expires(timer),
|
|
ns_to_ktime(bcn_int * 1000));
|
|
tasklet_hrtimer_start(&data->beacon_timer, next_bcn, HRTIMER_MODE_ABS);
|
|
out:
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
static const char * const hwsim_chanwidths[] = {
|
|
[NL80211_CHAN_WIDTH_20_NOHT] = "noht",
|
|
[NL80211_CHAN_WIDTH_20] = "ht20",
|
|
[NL80211_CHAN_WIDTH_40] = "ht40",
|
|
[NL80211_CHAN_WIDTH_80] = "vht80",
|
|
[NL80211_CHAN_WIDTH_80P80] = "vht80p80",
|
|
[NL80211_CHAN_WIDTH_160] = "vht160",
|
|
};
|
|
|
|
static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
struct ieee80211_conf *conf = &hw->conf;
|
|
static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
|
|
[IEEE80211_SMPS_AUTOMATIC] = "auto",
|
|
[IEEE80211_SMPS_OFF] = "off",
|
|
[IEEE80211_SMPS_STATIC] = "static",
|
|
[IEEE80211_SMPS_DYNAMIC] = "dynamic",
|
|
};
|
|
|
|
if (conf->chandef.chan)
|
|
wiphy_debug(hw->wiphy,
|
|
"%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
|
|
__func__,
|
|
conf->chandef.chan->center_freq,
|
|
conf->chandef.center_freq1,
|
|
conf->chandef.center_freq2,
|
|
hwsim_chanwidths[conf->chandef.width],
|
|
!!(conf->flags & IEEE80211_CONF_IDLE),
|
|
!!(conf->flags & IEEE80211_CONF_PS),
|
|
smps_modes[conf->smps_mode]);
|
|
else
|
|
wiphy_debug(hw->wiphy,
|
|
"%s (freq=0 idle=%d ps=%d smps=%s)\n",
|
|
__func__,
|
|
!!(conf->flags & IEEE80211_CONF_IDLE),
|
|
!!(conf->flags & IEEE80211_CONF_PS),
|
|
smps_modes[conf->smps_mode]);
|
|
|
|
data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
|
|
|
|
data->channel = conf->chandef.chan;
|
|
|
|
WARN_ON(data->channel && data->use_chanctx);
|
|
|
|
data->power_level = conf->power_level;
|
|
if (!data->started || !data->beacon_int)
|
|
tasklet_hrtimer_cancel(&data->beacon_timer);
|
|
else if (!hrtimer_is_queued(&data->beacon_timer.timer)) {
|
|
u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
|
|
u32 bcn_int = data->beacon_int;
|
|
u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
|
|
|
|
tasklet_hrtimer_start(&data->beacon_timer,
|
|
ns_to_ktime(until_tbtt * 1000),
|
|
HRTIMER_MODE_REL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
|
|
unsigned int changed_flags,
|
|
unsigned int *total_flags,u64 multicast)
|
|
{
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
|
|
wiphy_debug(hw->wiphy, "%s\n", __func__);
|
|
|
|
data->rx_filter = 0;
|
|
if (*total_flags & FIF_PROMISC_IN_BSS)
|
|
data->rx_filter |= FIF_PROMISC_IN_BSS;
|
|
if (*total_flags & FIF_ALLMULTI)
|
|
data->rx_filter |= FIF_ALLMULTI;
|
|
|
|
*total_flags = data->rx_filter;
|
|
}
|
|
|
|
static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
unsigned int *count = data;
|
|
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
|
|
|
|
if (vp->bcn_en)
|
|
(*count)++;
|
|
}
|
|
|
|
static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_bss_conf *info,
|
|
u32 changed)
|
|
{
|
|
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
|
|
struct mac80211_hwsim_data *data = hw->priv;
|
|
|
|
hwsim_check_magic(vif);
|
|
|
|
wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
|
|
__func__, changed, vif->addr);
|
|
|
|
if (changed & BSS_CHANGED_BSSID) {
|
|
wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
|
|
__func__, info->bssid);
|
|
memcpy(vp->bssid, info->bssid, ETH_ALEN);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_ASSOC) {
|
|
wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
|
|
info->assoc, info->aid);
|
|
vp->assoc = info->assoc;
|
|
vp->aid = info->aid;
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_BEACON_INT) {
|
|
wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
|
|
data->beacon_int = info->beacon_int * 1024;
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_BEACON_ENABLED) {
|
|
wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
|
|
vp->bcn_en = info->enable_beacon;
|
|
if (data->started &&
|
|
!hrtimer_is_queued(&data->beacon_timer.timer) &&
|
|
info->enable_beacon) {
|
|
u64 tsf, until_tbtt;
|
|
u32 bcn_int;
|
|
if (WARN_ON(!data->beacon_int))
|
|
data->beacon_int = 1000 * 1024;
|
|
tsf = mac80211_hwsim_get_tsf(hw, vif);
|
|
bcn_int = data->beacon_int;
|
|
until_tbtt = bcn_int - do_div(tsf, bcn_int);
|
|
tasklet_hrtimer_start(&data->beacon_timer,
|
|
ns_to_ktime(until_tbtt * 1000),
|
|
HRTIMER_MODE_REL);
|
|
} else if (!info->enable_beacon) {
|
|
unsigned int count = 0;
|
|
ieee80211_iterate_active_interfaces_atomic(
|
|
data->hw, IEEE80211_IFACE_ITER_NORMAL,
|
|
mac80211_hwsim_bcn_en_iter, &count);
|
|
wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
|
|
count);
|
|
if (count == 0)
|
|
tasklet_hrtimer_cancel(&data->beacon_timer);
|
|
}
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
|
|
wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
|
|
info->use_cts_prot);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
|
|
wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
|
|
info->use_short_preamble);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_ERP_SLOT) {
|
|
wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_HT) {
|
|
wiphy_debug(hw->wiphy, " HT: op_mode=0x%x\n",
|
|
info->ht_operation_mode);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_BASIC_RATES) {
|
|
wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
|
|
(unsigned long long) info->basic_rates);
|
|
}
|
|
|
|
if (changed & BSS_CHANGED_TXPOWER)
|
|
wiphy_debug(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
|
|
}
|
|
|
|
static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
hwsim_check_magic(vif);
|
|
hwsim_set_sta_magic(sta);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
hwsim_check_magic(vif);
|
|
hwsim_clear_sta_magic(sta);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
enum sta_notify_cmd cmd,
|
|
struct ieee80211_sta *sta)
|
|
{
|
|
hwsim_check_magic(vif);
|
|
|
|
switch (cmd) {
|
|
case STA_NOTIFY_SLEEP:
|
|
case STA_NOTIFY_AWAKE:
|
|
/* TODO: make good use of these flags */
|
|
break;
|
|
default:
|
|
WARN(1, "Invalid sta notify: %d\n", cmd);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
|
|
struct ieee80211_sta *sta,
|
|
bool set)
|
|
{
|
|
hwsim_check_sta_magic(sta);
|
|
return 0;
|
|
}
|
|
|
|
static int mac80211_hwsim_conf_tx(
|
|
struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif, u16 queue,
|
|
const struct ieee80211_tx_queue_params *params)
|
|
{
|
|
wiphy_debug(hw->wiphy,
|
|
"%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
|
|
__func__, queue,
|
|
params->txop, params->cw_min,
|
|
params->cw_max, params->aifs);
|
|
return 0;
|
|
}
|
|
|
|
static int mac80211_hwsim_get_survey(
|
|
struct ieee80211_hw *hw, int idx,
|
|
struct survey_info *survey)
|
|
{
|
|
struct ieee80211_conf *conf = &hw->conf;
|
|
|
|
wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
|
|
|
|
if (idx != 0)
|
|
return -ENOENT;
|
|
|
|
/* Current channel */
|
|
survey->channel = conf->chandef.chan;
|
|
|
|
/*
|
|
* Magically conjured noise level --- this is only ok for simulated hardware.
|
|
*
|
|
* A real driver which cannot determine the real channel noise MUST NOT
|
|
* report any noise, especially not a magically conjured one :-)
|
|
*/
|
|
survey->filled = SURVEY_INFO_NOISE_DBM;
|
|
survey->noise = -92;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_NL80211_TESTMODE
|
|
/*
|
|
* This section contains example code for using netlink
|
|
* attributes with the testmode command in nl80211.
|
|
*/
|
|
|
|
/* These enums need to be kept in sync with userspace */
|
|
enum hwsim_testmode_attr {
|
|
__HWSIM_TM_ATTR_INVALID = 0,
|
|
HWSIM_TM_ATTR_CMD = 1,
|
|
HWSIM_TM_ATTR_PS = 2,
|
|
|
|
/* keep last */
|
|
__HWSIM_TM_ATTR_AFTER_LAST,
|
|
HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
|
|
};
|
|
|
|
enum hwsim_testmode_cmd {
|
|
HWSIM_TM_CMD_SET_PS = 0,
|
|
HWSIM_TM_CMD_GET_PS = 1,
|
|
HWSIM_TM_CMD_STOP_QUEUES = 2,
|
|
HWSIM_TM_CMD_WAKE_QUEUES = 3,
|
|
};
|
|
|
|
static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
|
|
[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
|
|
[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
|
|
};
|
|
|
|
static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
void *data, int len)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
|
|
struct sk_buff *skb;
|
|
int err, ps;
|
|
|
|
err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
|
|
hwsim_testmode_policy);
|
|
if (err)
|
|
return err;
|
|
|
|
if (!tb[HWSIM_TM_ATTR_CMD])
|
|
return -EINVAL;
|
|
|
|
switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
|
|
case HWSIM_TM_CMD_SET_PS:
|
|
if (!tb[HWSIM_TM_ATTR_PS])
|
|
return -EINVAL;
|
|
ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
|
|
return hwsim_fops_ps_write(hwsim, ps);
|
|
case HWSIM_TM_CMD_GET_PS:
|
|
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
|
|
nla_total_size(sizeof(u32)));
|
|
if (!skb)
|
|
return -ENOMEM;
|
|
if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
|
|
goto nla_put_failure;
|
|
return cfg80211_testmode_reply(skb);
|
|
case HWSIM_TM_CMD_STOP_QUEUES:
|
|
ieee80211_stop_queues(hw);
|
|
return 0;
|
|
case HWSIM_TM_CMD_WAKE_QUEUES:
|
|
ieee80211_wake_queues(hw);
|
|
return 0;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
nla_put_failure:
|
|
kfree_skb(skb);
|
|
return -ENOBUFS;
|
|
}
|
|
#endif
|
|
|
|
static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
enum ieee80211_ampdu_mlme_action action,
|
|
struct ieee80211_sta *sta, u16 tid, u16 *ssn,
|
|
u8 buf_size)
|
|
{
|
|
switch (action) {
|
|
case IEEE80211_AMPDU_TX_START:
|
|
ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
break;
|
|
case IEEE80211_AMPDU_TX_STOP_CONT:
|
|
case IEEE80211_AMPDU_TX_STOP_FLUSH:
|
|
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
|
|
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
|
|
break;
|
|
case IEEE80211_AMPDU_TX_OPERATIONAL:
|
|
break;
|
|
case IEEE80211_AMPDU_RX_START:
|
|
case IEEE80211_AMPDU_RX_STOP:
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
u32 queues, bool drop)
|
|
{
|
|
/* Not implemented, queues only on kernel side */
|
|
}
|
|
|
|
static void hw_scan_work(struct work_struct *work)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim =
|
|
container_of(work, struct mac80211_hwsim_data, hw_scan.work);
|
|
struct cfg80211_scan_request *req = hwsim->hw_scan_request;
|
|
int dwell, i;
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
if (hwsim->scan_chan_idx >= req->n_channels) {
|
|
wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n");
|
|
ieee80211_scan_completed(hwsim->hw, false);
|
|
hwsim->hw_scan_request = NULL;
|
|
hwsim->hw_scan_vif = NULL;
|
|
hwsim->tmp_chan = NULL;
|
|
mutex_unlock(&hwsim->mutex);
|
|
return;
|
|
}
|
|
|
|
wiphy_debug(hwsim->hw->wiphy, "hw scan %d MHz\n",
|
|
req->channels[hwsim->scan_chan_idx]->center_freq);
|
|
|
|
hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
|
|
if (hwsim->tmp_chan->flags & IEEE80211_CHAN_NO_IR ||
|
|
!req->n_ssids) {
|
|
dwell = 120;
|
|
} else {
|
|
dwell = 30;
|
|
/* send probes */
|
|
for (i = 0; i < req->n_ssids; i++) {
|
|
struct sk_buff *probe;
|
|
|
|
probe = ieee80211_probereq_get(hwsim->hw,
|
|
hwsim->hw_scan_vif,
|
|
req->ssids[i].ssid,
|
|
req->ssids[i].ssid_len,
|
|
req->ie_len);
|
|
if (!probe)
|
|
continue;
|
|
|
|
if (req->ie_len)
|
|
memcpy(skb_put(probe, req->ie_len), req->ie,
|
|
req->ie_len);
|
|
|
|
local_bh_disable();
|
|
mac80211_hwsim_tx_frame(hwsim->hw, probe,
|
|
hwsim->tmp_chan);
|
|
local_bh_enable();
|
|
}
|
|
}
|
|
ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
|
|
msecs_to_jiffies(dwell));
|
|
hwsim->scan_chan_idx++;
|
|
mutex_unlock(&hwsim->mutex);
|
|
}
|
|
|
|
static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_scan_request *hw_req)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
struct cfg80211_scan_request *req = &hw_req->req;
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
|
|
mutex_unlock(&hwsim->mutex);
|
|
return -EBUSY;
|
|
}
|
|
hwsim->hw_scan_request = req;
|
|
hwsim->hw_scan_vif = vif;
|
|
hwsim->scan_chan_idx = 0;
|
|
mutex_unlock(&hwsim->mutex);
|
|
|
|
wiphy_debug(hw->wiphy, "hwsim hw_scan request\n");
|
|
|
|
ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
|
|
wiphy_debug(hw->wiphy, "hwsim cancel_hw_scan\n");
|
|
|
|
cancel_delayed_work_sync(&hwsim->hw_scan);
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
ieee80211_scan_completed(hwsim->hw, true);
|
|
hwsim->tmp_chan = NULL;
|
|
hwsim->hw_scan_request = NULL;
|
|
hwsim->hw_scan_vif = NULL;
|
|
mutex_unlock(&hwsim->mutex);
|
|
}
|
|
|
|
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
|
|
if (hwsim->scanning) {
|
|
printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
|
|
goto out;
|
|
}
|
|
|
|
printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
|
|
hwsim->scanning = true;
|
|
|
|
out:
|
|
mutex_unlock(&hwsim->mutex);
|
|
}
|
|
|
|
static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
|
|
printk(KERN_DEBUG "hwsim sw_scan_complete\n");
|
|
hwsim->scanning = false;
|
|
|
|
mutex_unlock(&hwsim->mutex);
|
|
}
|
|
|
|
static void hw_roc_done(struct work_struct *work)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim =
|
|
container_of(work, struct mac80211_hwsim_data, roc_done.work);
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
ieee80211_remain_on_channel_expired(hwsim->hw);
|
|
hwsim->tmp_chan = NULL;
|
|
mutex_unlock(&hwsim->mutex);
|
|
|
|
wiphy_debug(hwsim->hw->wiphy, "hwsim ROC expired\n");
|
|
}
|
|
|
|
static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_channel *chan,
|
|
int duration,
|
|
enum ieee80211_roc_type type)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
|
|
mutex_unlock(&hwsim->mutex);
|
|
return -EBUSY;
|
|
}
|
|
|
|
hwsim->tmp_chan = chan;
|
|
mutex_unlock(&hwsim->mutex);
|
|
|
|
wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
|
|
chan->center_freq, duration);
|
|
|
|
ieee80211_ready_on_channel(hw);
|
|
|
|
ieee80211_queue_delayed_work(hw, &hwsim->roc_done,
|
|
msecs_to_jiffies(duration));
|
|
return 0;
|
|
}
|
|
|
|
static int mac80211_hwsim_croc(struct ieee80211_hw *hw)
|
|
{
|
|
struct mac80211_hwsim_data *hwsim = hw->priv;
|
|
|
|
cancel_delayed_work_sync(&hwsim->roc_done);
|
|
|
|
mutex_lock(&hwsim->mutex);
|
|
hwsim->tmp_chan = NULL;
|
|
mutex_unlock(&hwsim->mutex);
|
|
|
|
wiphy_debug(hw->wiphy, "hwsim ROC canceled\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
|
|
struct ieee80211_chanctx_conf *ctx)
|
|
{
|
|
hwsim_set_chanctx_magic(ctx);
|
|
wiphy_debug(hw->wiphy,
|
|
"add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
|
|
ctx->def.chan->center_freq, ctx->def.width,
|
|
ctx->def.center_freq1, ctx->def.center_freq2);
|
|
return 0;
|
|
}
|
|
|
|
static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
|
|
struct ieee80211_chanctx_conf *ctx)
|
|
{
|
|
wiphy_debug(hw->wiphy,
|
|
"remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
|
|
ctx->def.chan->center_freq, ctx->def.width,
|
|
ctx->def.center_freq1, ctx->def.center_freq2);
|
|
hwsim_check_chanctx_magic(ctx);
|
|
hwsim_clear_chanctx_magic(ctx);
|
|
}
|
|
|
|
static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
|
|
struct ieee80211_chanctx_conf *ctx,
|
|
u32 changed)
|
|
{
|
|
hwsim_check_chanctx_magic(ctx);
|
|
wiphy_debug(hw->wiphy,
|
|
"change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
|
|
ctx->def.chan->center_freq, ctx->def.width,
|
|
ctx->def.center_freq1, ctx->def.center_freq2);
|
|
}
|
|
|
|
static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_chanctx_conf *ctx)
|
|
{
|
|
hwsim_check_magic(vif);
|
|
hwsim_check_chanctx_magic(ctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_chanctx_conf *ctx)
|
|
{
|
|
hwsim_check_magic(vif);
|
|
hwsim_check_chanctx_magic(ctx);
|
|
}
|
|
|
|
static const struct ieee80211_ops mac80211_hwsim_ops = {
|
|
.tx = mac80211_hwsim_tx,
|
|
.start = mac80211_hwsim_start,
|
|
.stop = mac80211_hwsim_stop,
|
|
.add_interface = mac80211_hwsim_add_interface,
|
|
.change_interface = mac80211_hwsim_change_interface,
|
|
.remove_interface = mac80211_hwsim_remove_interface,
|
|
.config = mac80211_hwsim_config,
|
|
.configure_filter = mac80211_hwsim_configure_filter,
|
|
.bss_info_changed = mac80211_hwsim_bss_info_changed,
|
|
.sta_add = mac80211_hwsim_sta_add,
|
|
.sta_remove = mac80211_hwsim_sta_remove,
|
|
.sta_notify = mac80211_hwsim_sta_notify,
|
|
.set_tim = mac80211_hwsim_set_tim,
|
|
.conf_tx = mac80211_hwsim_conf_tx,
|
|
.get_survey = mac80211_hwsim_get_survey,
|
|
CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
|
|
.ampdu_action = mac80211_hwsim_ampdu_action,
|
|
.sw_scan_start = mac80211_hwsim_sw_scan,
|
|
.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
|
|
.flush = mac80211_hwsim_flush,
|
|
.get_tsf = mac80211_hwsim_get_tsf,
|
|
.set_tsf = mac80211_hwsim_set_tsf,
|
|
};
|
|
|
|
static struct ieee80211_ops mac80211_hwsim_mchan_ops;
|
|
|
|
static int mac80211_hwsim_create_radio(int channels, const char *reg_alpha2,
|
|
const struct ieee80211_regdomain *regd,
|
|
bool reg_strict, bool p2p_device,
|
|
bool use_chanctx)
|
|
{
|
|
int err;
|
|
u8 addr[ETH_ALEN];
|
|
struct mac80211_hwsim_data *data;
|
|
struct ieee80211_hw *hw;
|
|
enum ieee80211_band band;
|
|
const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
|
|
int idx;
|
|
|
|
if (WARN_ON(channels > 1 && !use_chanctx))
|
|
return -EINVAL;
|
|
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
idx = hwsim_radio_idx++;
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
|
|
if (use_chanctx)
|
|
ops = &mac80211_hwsim_mchan_ops;
|
|
hw = ieee80211_alloc_hw(sizeof(*data), ops);
|
|
if (!hw) {
|
|
printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n");
|
|
err = -ENOMEM;
|
|
goto failed;
|
|
}
|
|
data = hw->priv;
|
|
data->hw = hw;
|
|
|
|
data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
|
|
if (IS_ERR(data->dev)) {
|
|
printk(KERN_DEBUG
|
|
"mac80211_hwsim: device_create failed (%ld)\n",
|
|
PTR_ERR(data->dev));
|
|
err = -ENOMEM;
|
|
goto failed_drvdata;
|
|
}
|
|
data->dev->driver = &mac80211_hwsim_driver.driver;
|
|
err = device_bind_driver(data->dev);
|
|
if (err != 0) {
|
|
printk(KERN_DEBUG "mac80211_hwsim: device_bind_driver failed (%d)\n",
|
|
err);
|
|
goto failed_hw;
|
|
}
|
|
|
|
skb_queue_head_init(&data->pending);
|
|
|
|
SET_IEEE80211_DEV(hw, data->dev);
|
|
memset(addr, 0, ETH_ALEN);
|
|
addr[0] = 0x02;
|
|
addr[3] = idx >> 8;
|
|
addr[4] = idx;
|
|
memcpy(data->addresses[0].addr, addr, ETH_ALEN);
|
|
memcpy(data->addresses[1].addr, addr, ETH_ALEN);
|
|
data->addresses[1].addr[0] |= 0x40;
|
|
hw->wiphy->n_addresses = 2;
|
|
hw->wiphy->addresses = data->addresses;
|
|
|
|
data->channels = channels;
|
|
data->use_chanctx = use_chanctx;
|
|
data->idx = idx;
|
|
|
|
if (data->use_chanctx) {
|
|
hw->wiphy->max_scan_ssids = 255;
|
|
hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
|
|
hw->wiphy->max_remain_on_channel_duration = 1000;
|
|
/* For channels > 1 DFS is not allowed */
|
|
hw->wiphy->n_iface_combinations = 1;
|
|
hw->wiphy->iface_combinations = &data->if_combination;
|
|
if (p2p_device)
|
|
data->if_combination = hwsim_if_comb_p2p_dev[0];
|
|
else
|
|
data->if_combination = hwsim_if_comb[0];
|
|
data->if_combination.num_different_channels = data->channels;
|
|
} else if (p2p_device) {
|
|
hw->wiphy->iface_combinations = hwsim_if_comb_p2p_dev;
|
|
hw->wiphy->n_iface_combinations =
|
|
ARRAY_SIZE(hwsim_if_comb_p2p_dev);
|
|
} else {
|
|
hw->wiphy->iface_combinations = hwsim_if_comb;
|
|
hw->wiphy->n_iface_combinations = ARRAY_SIZE(hwsim_if_comb);
|
|
}
|
|
|
|
INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
|
|
INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
|
|
|
|
hw->queues = 5;
|
|
hw->offchannel_tx_hw_queue = 4;
|
|
hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
|
|
BIT(NL80211_IFTYPE_AP) |
|
|
BIT(NL80211_IFTYPE_P2P_CLIENT) |
|
|
BIT(NL80211_IFTYPE_P2P_GO) |
|
|
BIT(NL80211_IFTYPE_ADHOC) |
|
|
BIT(NL80211_IFTYPE_MESH_POINT);
|
|
|
|
if (p2p_device)
|
|
hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
|
|
|
|
hw->flags = IEEE80211_HW_MFP_CAPABLE |
|
|
IEEE80211_HW_SIGNAL_DBM |
|
|
IEEE80211_HW_AMPDU_AGGREGATION |
|
|
IEEE80211_HW_WANT_MONITOR_VIF |
|
|
IEEE80211_HW_QUEUE_CONTROL |
|
|
IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
|
|
IEEE80211_HW_CHANCTX_STA_CSA;
|
|
if (rctbl)
|
|
hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;
|
|
|
|
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
|
|
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
|
|
WIPHY_FLAG_AP_UAPSD |
|
|
WIPHY_FLAG_HAS_CHANNEL_SWITCH;
|
|
hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
|
|
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
|
|
NL80211_FEATURE_STATIC_SMPS |
|
|
NL80211_FEATURE_DYNAMIC_SMPS;
|
|
|
|
/* ask mac80211 to reserve space for magic */
|
|
hw->vif_data_size = sizeof(struct hwsim_vif_priv);
|
|
hw->sta_data_size = sizeof(struct hwsim_sta_priv);
|
|
hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
|
|
|
|
memcpy(data->channels_2ghz, hwsim_channels_2ghz,
|
|
sizeof(hwsim_channels_2ghz));
|
|
memcpy(data->channels_5ghz, hwsim_channels_5ghz,
|
|
sizeof(hwsim_channels_5ghz));
|
|
memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
|
|
|
|
for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
|
|
struct ieee80211_supported_band *sband = &data->bands[band];
|
|
switch (band) {
|
|
case IEEE80211_BAND_2GHZ:
|
|
sband->channels = data->channels_2ghz;
|
|
sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
|
|
sband->bitrates = data->rates;
|
|
sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
|
|
break;
|
|
case IEEE80211_BAND_5GHZ:
|
|
sband->channels = data->channels_5ghz;
|
|
sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
|
|
sband->bitrates = data->rates + 4;
|
|
sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
|
|
break;
|
|
default:
|
|
continue;
|
|
}
|
|
|
|
sband->ht_cap.ht_supported = true;
|
|
sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
|
|
IEEE80211_HT_CAP_GRN_FLD |
|
|
IEEE80211_HT_CAP_SGI_40 |
|
|
IEEE80211_HT_CAP_DSSSCCK40;
|
|
sband->ht_cap.ampdu_factor = 0x3;
|
|
sband->ht_cap.ampdu_density = 0x6;
|
|
memset(&sband->ht_cap.mcs, 0,
|
|
sizeof(sband->ht_cap.mcs));
|
|
sband->ht_cap.mcs.rx_mask[0] = 0xff;
|
|
sband->ht_cap.mcs.rx_mask[1] = 0xff;
|
|
sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
|
|
|
|
hw->wiphy->bands[band] = sband;
|
|
|
|
sband->vht_cap.vht_supported = true;
|
|
sband->vht_cap.cap =
|
|
IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
|
|
IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
|
|
IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
|
|
IEEE80211_VHT_CAP_RXLDPC |
|
|
IEEE80211_VHT_CAP_SHORT_GI_80 |
|
|
IEEE80211_VHT_CAP_SHORT_GI_160 |
|
|
IEEE80211_VHT_CAP_TXSTBC |
|
|
IEEE80211_VHT_CAP_RXSTBC_1 |
|
|
IEEE80211_VHT_CAP_RXSTBC_2 |
|
|
IEEE80211_VHT_CAP_RXSTBC_3 |
|
|
IEEE80211_VHT_CAP_RXSTBC_4 |
|
|
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
|
|
sband->vht_cap.vht_mcs.rx_mcs_map =
|
|
cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_8 << 0 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_8 << 2 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_8 << 6 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_8 << 8 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
|
|
IEEE80211_VHT_MCS_SUPPORT_0_8 << 14);
|
|
sband->vht_cap.vht_mcs.tx_mcs_map =
|
|
sband->vht_cap.vht_mcs.rx_mcs_map;
|
|
}
|
|
|
|
/* By default all radios belong to the first group */
|
|
data->group = 1;
|
|
mutex_init(&data->mutex);
|
|
|
|
/* Enable frame retransmissions for lossy channels */
|
|
hw->max_rates = 4;
|
|
hw->max_rate_tries = 11;
|
|
|
|
if (reg_strict)
|
|
hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
|
|
if (regd) {
|
|
hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
|
|
wiphy_apply_custom_regulatory(hw->wiphy, regd);
|
|
/* give the regulatory workqueue a chance to run */
|
|
schedule_timeout_interruptible(1);
|
|
}
|
|
|
|
err = ieee80211_register_hw(hw);
|
|
if (err < 0) {
|
|
printk(KERN_DEBUG "mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
|
|
err);
|
|
goto failed_hw;
|
|
}
|
|
|
|
wiphy_debug(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
|
|
|
|
if (reg_alpha2)
|
|
regulatory_hint(hw->wiphy, reg_alpha2);
|
|
|
|
data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
|
|
debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
|
|
debugfs_create_file("group", 0666, data->debugfs, data,
|
|
&hwsim_fops_group);
|
|
if (!data->use_chanctx)
|
|
debugfs_create_file("dfs_simulate_radar", 0222,
|
|
data->debugfs,
|
|
data, &hwsim_simulate_radar);
|
|
|
|
tasklet_hrtimer_init(&data->beacon_timer,
|
|
mac80211_hwsim_beacon,
|
|
CLOCK_MONOTONIC_RAW, HRTIMER_MODE_ABS);
|
|
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
list_add_tail(&data->list, &hwsim_radios);
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
|
|
return idx;
|
|
|
|
failed_hw:
|
|
device_unregister(data->dev);
|
|
failed_drvdata:
|
|
ieee80211_free_hw(hw);
|
|
failed:
|
|
return err;
|
|
}
|
|
|
|
static void mac80211_hwsim_destroy_radio(struct mac80211_hwsim_data *data)
|
|
{
|
|
debugfs_remove_recursive(data->debugfs);
|
|
ieee80211_unregister_hw(data->hw);
|
|
device_release_driver(data->dev);
|
|
device_unregister(data->dev);
|
|
ieee80211_free_hw(data->hw);
|
|
}
|
|
|
|
static void mac80211_hwsim_free(void)
|
|
{
|
|
struct mac80211_hwsim_data *data;
|
|
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
while ((data = list_first_entry_or_null(&hwsim_radios,
|
|
struct mac80211_hwsim_data,
|
|
list))) {
|
|
list_del(&data->list);
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
mac80211_hwsim_destroy_radio(data);
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
}
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
class_destroy(hwsim_class);
|
|
}
|
|
|
|
static const struct net_device_ops hwsim_netdev_ops = {
|
|
.ndo_start_xmit = hwsim_mon_xmit,
|
|
.ndo_change_mtu = eth_change_mtu,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
};
|
|
|
|
static void hwsim_mon_setup(struct net_device *dev)
|
|
{
|
|
dev->netdev_ops = &hwsim_netdev_ops;
|
|
dev->destructor = free_netdev;
|
|
ether_setup(dev);
|
|
dev->tx_queue_len = 0;
|
|
dev->type = ARPHRD_IEEE80211_RADIOTAP;
|
|
memset(dev->dev_addr, 0, ETH_ALEN);
|
|
dev->dev_addr[0] = 0x12;
|
|
}
|
|
|
|
static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
|
|
{
|
|
struct mac80211_hwsim_data *data;
|
|
bool _found = false;
|
|
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
list_for_each_entry(data, &hwsim_radios, list) {
|
|
if (memcmp(data->addresses[1].addr, addr, ETH_ALEN) == 0) {
|
|
_found = true;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
|
|
if (!_found)
|
|
return NULL;
|
|
|
|
return data;
|
|
}
|
|
|
|
static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
|
|
struct genl_info *info)
|
|
{
|
|
|
|
struct ieee80211_hdr *hdr;
|
|
struct mac80211_hwsim_data *data2;
|
|
struct ieee80211_tx_info *txi;
|
|
struct hwsim_tx_rate *tx_attempts;
|
|
unsigned long ret_skb_ptr;
|
|
struct sk_buff *skb, *tmp;
|
|
const u8 *src;
|
|
unsigned int hwsim_flags;
|
|
int i;
|
|
bool found = false;
|
|
|
|
if (info->snd_portid != wmediumd_portid)
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
|
|
!info->attrs[HWSIM_ATTR_FLAGS] ||
|
|
!info->attrs[HWSIM_ATTR_COOKIE] ||
|
|
!info->attrs[HWSIM_ATTR_TX_INFO])
|
|
goto out;
|
|
|
|
src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
|
|
hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
|
|
ret_skb_ptr = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
|
|
|
|
data2 = get_hwsim_data_ref_from_addr(src);
|
|
if (!data2)
|
|
goto out;
|
|
|
|
/* look for the skb matching the cookie passed back from user */
|
|
skb_queue_walk_safe(&data2->pending, skb, tmp) {
|
|
if ((unsigned long)skb == ret_skb_ptr) {
|
|
skb_unlink(skb, &data2->pending);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* not found */
|
|
if (!found)
|
|
goto out;
|
|
|
|
/* Tx info received because the frame was broadcasted on user space,
|
|
so we get all the necessary info: tx attempts and skb control buff */
|
|
|
|
tx_attempts = (struct hwsim_tx_rate *)nla_data(
|
|
info->attrs[HWSIM_ATTR_TX_INFO]);
|
|
|
|
/* now send back TX status */
|
|
txi = IEEE80211_SKB_CB(skb);
|
|
|
|
ieee80211_tx_info_clear_status(txi);
|
|
|
|
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
|
|
txi->status.rates[i].idx = tx_attempts[i].idx;
|
|
txi->status.rates[i].count = tx_attempts[i].count;
|
|
/*txi->status.rates[i].flags = 0;*/
|
|
}
|
|
|
|
txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
|
|
|
|
if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
|
|
(hwsim_flags & HWSIM_TX_STAT_ACK)) {
|
|
if (skb->len >= 16) {
|
|
hdr = (struct ieee80211_hdr *) skb->data;
|
|
mac80211_hwsim_monitor_ack(data2->channel,
|
|
hdr->addr2);
|
|
}
|
|
txi->flags |= IEEE80211_TX_STAT_ACK;
|
|
}
|
|
ieee80211_tx_status_irqsafe(data2->hw, skb);
|
|
return 0;
|
|
out:
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
|
|
struct genl_info *info)
|
|
{
|
|
|
|
struct mac80211_hwsim_data *data2;
|
|
struct ieee80211_rx_status rx_status;
|
|
const u8 *dst;
|
|
int frame_data_len;
|
|
void *frame_data;
|
|
struct sk_buff *skb = NULL;
|
|
|
|
if (info->snd_portid != wmediumd_portid)
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
|
|
!info->attrs[HWSIM_ATTR_FRAME] ||
|
|
!info->attrs[HWSIM_ATTR_RX_RATE] ||
|
|
!info->attrs[HWSIM_ATTR_SIGNAL])
|
|
goto out;
|
|
|
|
dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
|
|
frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
|
|
frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
|
|
|
|
/* Allocate new skb here */
|
|
skb = alloc_skb(frame_data_len, GFP_KERNEL);
|
|
if (skb == NULL)
|
|
goto err;
|
|
|
|
if (frame_data_len > IEEE80211_MAX_DATA_LEN)
|
|
goto err;
|
|
|
|
/* Copy the data */
|
|
memcpy(skb_put(skb, frame_data_len), frame_data, frame_data_len);
|
|
|
|
data2 = get_hwsim_data_ref_from_addr(dst);
|
|
if (!data2)
|
|
goto out;
|
|
|
|
/* check if radio is configured properly */
|
|
|
|
if (data2->idle || !data2->started)
|
|
goto out;
|
|
|
|
/* A frame is received from user space */
|
|
memset(&rx_status, 0, sizeof(rx_status));
|
|
rx_status.freq = data2->channel->center_freq;
|
|
rx_status.band = data2->channel->band;
|
|
rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
|
|
rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
|
|
|
|
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
|
|
ieee80211_rx_irqsafe(data2->hw, skb);
|
|
|
|
return 0;
|
|
err:
|
|
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
|
|
goto out;
|
|
out:
|
|
dev_kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int hwsim_register_received_nl(struct sk_buff *skb_2,
|
|
struct genl_info *info)
|
|
{
|
|
struct mac80211_hwsim_data *data;
|
|
int chans = 1;
|
|
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
list_for_each_entry(data, &hwsim_radios, list)
|
|
chans = max(chans, data->channels);
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
|
|
/* In the future we should revise the userspace API and allow it
|
|
* to set a flag that it does support multi-channel, then we can
|
|
* let this pass conditionally on the flag.
|
|
* For current userspace, prohibit it since it won't work right.
|
|
*/
|
|
if (chans > 1)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (wmediumd_portid)
|
|
return -EBUSY;
|
|
|
|
wmediumd_portid = info->snd_portid;
|
|
|
|
printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
|
|
"switching to wmediumd mode with pid %d\n", info->snd_portid);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hwsim_create_radio_nl(struct sk_buff *msg, struct genl_info *info)
|
|
{
|
|
unsigned int chans = channels;
|
|
const char *alpha2 = NULL;
|
|
const struct ieee80211_regdomain *regd = NULL;
|
|
bool reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
|
|
bool p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
|
|
bool use_chanctx;
|
|
|
|
if (info->attrs[HWSIM_ATTR_CHANNELS])
|
|
chans = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
|
|
|
|
if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
|
|
use_chanctx = true;
|
|
else
|
|
use_chanctx = (chans > 1);
|
|
|
|
if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
|
|
alpha2 = nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
|
|
|
|
if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
|
|
u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
|
|
|
|
if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
|
|
return -EINVAL;
|
|
regd = hwsim_world_regdom_custom[idx];
|
|
}
|
|
|
|
return mac80211_hwsim_create_radio(chans, alpha2, regd, reg_strict,
|
|
p2p_device, use_chanctx);
|
|
}
|
|
|
|
static int hwsim_destroy_radio_nl(struct sk_buff *msg, struct genl_info *info)
|
|
{
|
|
struct mac80211_hwsim_data *data;
|
|
int idx;
|
|
|
|
if (!info->attrs[HWSIM_ATTR_RADIO_ID])
|
|
return -EINVAL;
|
|
idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
|
|
|
|
spin_lock_bh(&hwsim_radio_lock);
|
|
list_for_each_entry(data, &hwsim_radios, list) {
|
|
if (data->idx != idx)
|
|
continue;
|
|
list_del(&data->list);
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
mac80211_hwsim_destroy_radio(data);
|
|
return 0;
|
|
}
|
|
spin_unlock_bh(&hwsim_radio_lock);
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Generic Netlink operations array */
|
|
static const struct genl_ops hwsim_ops[] = {
|
|
{
|
|
.cmd = HWSIM_CMD_REGISTER,
|
|
.policy = hwsim_genl_policy,
|
|
.doit = hwsim_register_received_nl,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = HWSIM_CMD_FRAME,
|
|
.policy = hwsim_genl_policy,
|
|
.doit = hwsim_cloned_frame_received_nl,
|
|
},
|
|
{
|
|
.cmd = HWSIM_CMD_TX_INFO_FRAME,
|
|
.policy = hwsim_genl_policy,
|
|
.doit = hwsim_tx_info_frame_received_nl,
|
|
},
|
|
{
|
|
.cmd = HWSIM_CMD_CREATE_RADIO,
|
|
.policy = hwsim_genl_policy,
|
|
.doit = hwsim_create_radio_nl,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = HWSIM_CMD_DESTROY_RADIO,
|
|
.policy = hwsim_genl_policy,
|
|
.doit = hwsim_destroy_radio_nl,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
};
|
|
|
|
static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
|
|
unsigned long state,
|
|
void *_notify)
|
|
{
|
|
struct netlink_notify *notify = _notify;
|
|
|
|
if (state != NETLINK_URELEASE)
|
|
return NOTIFY_DONE;
|
|
|
|
if (notify->portid == wmediumd_portid) {
|
|
printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
|
|
" socket, switching to perfect channel medium\n");
|
|
wmediumd_portid = 0;
|
|
}
|
|
return NOTIFY_DONE;
|
|
|
|
}
|
|
|
|
static struct notifier_block hwsim_netlink_notifier = {
|
|
.notifier_call = mac80211_hwsim_netlink_notify,
|
|
};
|
|
|
|
static int hwsim_init_netlink(void)
|
|
{
|
|
int rc;
|
|
|
|
printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
|
|
|
|
rc = genl_register_family_with_ops(&hwsim_genl_family, hwsim_ops);
|
|
if (rc)
|
|
goto failure;
|
|
|
|
rc = netlink_register_notifier(&hwsim_netlink_notifier);
|
|
if (rc)
|
|
goto failure;
|
|
|
|
return 0;
|
|
|
|
failure:
|
|
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void hwsim_exit_netlink(void)
|
|
{
|
|
/* unregister the notifier */
|
|
netlink_unregister_notifier(&hwsim_netlink_notifier);
|
|
/* unregister the family */
|
|
genl_unregister_family(&hwsim_genl_family);
|
|
}
|
|
|
|
static int __init init_mac80211_hwsim(void)
|
|
{
|
|
int i, err;
|
|
|
|
if (radios < 0 || radios > 100)
|
|
return -EINVAL;
|
|
|
|
if (channels < 1)
|
|
return -EINVAL;
|
|
|
|
mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
|
|
mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
|
|
mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
|
|
mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
|
|
mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
|
|
mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
|
|
mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
|
|
mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
|
|
mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
|
|
mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
|
|
mac80211_hwsim_mchan_ops.assign_vif_chanctx =
|
|
mac80211_hwsim_assign_vif_chanctx;
|
|
mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
|
|
mac80211_hwsim_unassign_vif_chanctx;
|
|
|
|
spin_lock_init(&hwsim_radio_lock);
|
|
INIT_LIST_HEAD(&hwsim_radios);
|
|
|
|
err = platform_driver_register(&mac80211_hwsim_driver);
|
|
if (err)
|
|
return err;
|
|
|
|
hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
|
|
if (IS_ERR(hwsim_class)) {
|
|
err = PTR_ERR(hwsim_class);
|
|
goto out_unregister_driver;
|
|
}
|
|
|
|
for (i = 0; i < radios; i++) {
|
|
const char *reg_alpha2 = NULL;
|
|
const struct ieee80211_regdomain *regd = NULL;
|
|
bool reg_strict = false;
|
|
|
|
switch (regtest) {
|
|
case HWSIM_REGTEST_DIFF_COUNTRY:
|
|
if (i < ARRAY_SIZE(hwsim_alpha2s))
|
|
reg_alpha2 = hwsim_alpha2s[i];
|
|
break;
|
|
case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
|
|
if (!i)
|
|
reg_alpha2 = hwsim_alpha2s[0];
|
|
break;
|
|
case HWSIM_REGTEST_STRICT_ALL:
|
|
reg_strict = true;
|
|
case HWSIM_REGTEST_DRIVER_REG_ALL:
|
|
reg_alpha2 = hwsim_alpha2s[0];
|
|
break;
|
|
case HWSIM_REGTEST_WORLD_ROAM:
|
|
if (i == 0)
|
|
regd = &hwsim_world_regdom_custom_01;
|
|
break;
|
|
case HWSIM_REGTEST_CUSTOM_WORLD:
|
|
regd = &hwsim_world_regdom_custom_01;
|
|
break;
|
|
case HWSIM_REGTEST_CUSTOM_WORLD_2:
|
|
if (i == 0)
|
|
regd = &hwsim_world_regdom_custom_01;
|
|
else if (i == 1)
|
|
regd = &hwsim_world_regdom_custom_02;
|
|
break;
|
|
case HWSIM_REGTEST_STRICT_FOLLOW:
|
|
if (i == 0) {
|
|
reg_strict = true;
|
|
reg_alpha2 = hwsim_alpha2s[0];
|
|
}
|
|
break;
|
|
case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
|
|
if (i == 0) {
|
|
reg_strict = true;
|
|
reg_alpha2 = hwsim_alpha2s[0];
|
|
} else if (i == 1) {
|
|
reg_alpha2 = hwsim_alpha2s[1];
|
|
}
|
|
break;
|
|
case HWSIM_REGTEST_ALL:
|
|
switch (i) {
|
|
case 0:
|
|
regd = &hwsim_world_regdom_custom_01;
|
|
break;
|
|
case 1:
|
|
regd = &hwsim_world_regdom_custom_02;
|
|
break;
|
|
case 2:
|
|
reg_alpha2 = hwsim_alpha2s[0];
|
|
break;
|
|
case 3:
|
|
reg_alpha2 = hwsim_alpha2s[1];
|
|
break;
|
|
case 4:
|
|
reg_strict = true;
|
|
reg_alpha2 = hwsim_alpha2s[2];
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
err = mac80211_hwsim_create_radio(channels, reg_alpha2,
|
|
regd, reg_strict,
|
|
support_p2p_device,
|
|
channels > 1);
|
|
if (err < 0)
|
|
goto out_free_radios;
|
|
}
|
|
|
|
hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
|
|
hwsim_mon_setup);
|
|
if (hwsim_mon == NULL) {
|
|
err = -ENOMEM;
|
|
goto out_free_radios;
|
|
}
|
|
|
|
rtnl_lock();
|
|
err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
|
|
if (err < 0) {
|
|
rtnl_unlock();
|
|
goto out_free_radios;
|
|
}
|
|
|
|
err = register_netdevice(hwsim_mon);
|
|
if (err < 0) {
|
|
rtnl_unlock();
|
|
goto out_free_mon;
|
|
}
|
|
rtnl_unlock();
|
|
|
|
err = hwsim_init_netlink();
|
|
if (err < 0)
|
|
goto out_free_mon;
|
|
|
|
return 0;
|
|
|
|
out_free_mon:
|
|
free_netdev(hwsim_mon);
|
|
out_free_radios:
|
|
mac80211_hwsim_free();
|
|
out_unregister_driver:
|
|
platform_driver_unregister(&mac80211_hwsim_driver);
|
|
return err;
|
|
}
|
|
module_init(init_mac80211_hwsim);
|
|
|
|
static void __exit exit_mac80211_hwsim(void)
|
|
{
|
|
printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
|
|
|
|
hwsim_exit_netlink();
|
|
|
|
mac80211_hwsim_free();
|
|
unregister_netdev(hwsim_mon);
|
|
platform_driver_unregister(&mac80211_hwsim_driver);
|
|
}
|
|
module_exit(exit_mac80211_hwsim);
|