| /* |
| * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211 |
| * Copyright (c) 2008, Jouni Malinen <j@w1.fi> |
| * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| /* |
| * TODO: |
| * - Add TSF sync and fix IBSS beacon transmission by adding |
| * competition for "air time" at TBTT |
| * - RX filtering based on filter configuration (data->rx_filter) |
| */ |
| |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| #include <linux/spinlock.h> |
| #include <net/dst.h> |
| #include <net/xfrm.h> |
| #include <net/mac80211.h> |
| #include <net/ieee80211_radiotap.h> |
| #include <linux/if_arp.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/etherdevice.h> |
| #include <linux/platform_device.h> |
| #include <linux/debugfs.h> |
| #include <linux/module.h> |
| #include <linux/ktime.h> |
| #include <net/genetlink.h> |
| #include <net/net_namespace.h> |
| #include <net/netns/generic.h> |
| #include "mac80211_hwsim.h" |
| |
| #define WARN_QUEUE 100 |
| #define MAX_QUEUE 200 |
| |
| MODULE_AUTHOR("Jouni Malinen"); |
| MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211"); |
| MODULE_LICENSE("GPL"); |
| |
| static int radios = 2; |
| module_param(radios, int, 0444); |
| MODULE_PARM_DESC(radios, "Number of simulated radios"); |
| |
| static int channels = 1; |
| module_param(channels, int, 0444); |
| MODULE_PARM_DESC(channels, "Number of concurrent channels"); |
| |
| static bool paged_rx = false; |
| module_param(paged_rx, bool, 0644); |
| MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones"); |
| |
| static bool rctbl = false; |
| module_param(rctbl, bool, 0444); |
| MODULE_PARM_DESC(rctbl, "Handle rate control table"); |
| |
| static bool support_p2p_device = true; |
| module_param(support_p2p_device, bool, 0444); |
| MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type"); |
| |
| /** |
| * enum hwsim_regtest - the type of regulatory tests we offer |
| * |
| * These are the different values you can use for the regtest |
| * module parameter. This is useful to help test world roaming |
| * and the driver regulatory_hint() call and combinations of these. |
| * If you want to do specific alpha2 regulatory domain tests simply |
| * use the userspace regulatory request as that will be respected as |
| * well without the need of this module parameter. This is designed |
| * only for testing the driver regulatory request, world roaming |
| * and all possible combinations. |
| * |
| * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed, |
| * this is the default value. |
| * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory |
| * hint, only one driver regulatory hint will be sent as such the |
| * secondary radios are expected to follow. |
| * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory |
| * request with all radios reporting the same regulatory domain. |
| * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling |
| * different regulatory domains requests. Expected behaviour is for |
| * an intersection to occur but each device will still use their |
| * respective regulatory requested domains. Subsequent radios will |
| * use the resulting intersection. |
| * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish |
| * this by using a custom beacon-capable regulatory domain for the first |
| * radio. All other device world roam. |
| * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory |
| * domain requests. All radios will adhere to this custom world regulatory |
| * domain. |
| * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory |
| * domain requests. The first radio will adhere to the first custom world |
| * regulatory domain, the second one to the second custom world regulatory |
| * domain. All other devices will world roam. |
| * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain |
| * settings, only the first radio will send a regulatory domain request |
| * and use strict settings. The rest of the radios are expected to follow. |
| * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain |
| * settings. All radios will adhere to this. |
| * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory |
| * domain settings, combined with secondary driver regulatory domain |
| * settings. The first radio will get a strict regulatory domain setting |
| * using the first driver regulatory request and the second radio will use |
| * non-strict settings using the second driver regulatory request. All |
| * other devices should follow the intersection created between the |
| * first two. |
| * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need |
| * at least 6 radios for a complete test. We will test in this order: |
| * 1 - driver custom world regulatory domain |
| * 2 - second custom world regulatory domain |
| * 3 - first driver regulatory domain request |
| * 4 - second driver regulatory domain request |
| * 5 - strict regulatory domain settings using the third driver regulatory |
| * domain request |
| * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio |
| * regulatory requests. |
| */ |
| enum hwsim_regtest { |
| HWSIM_REGTEST_DISABLED = 0, |
| HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1, |
| HWSIM_REGTEST_DRIVER_REG_ALL = 2, |
| HWSIM_REGTEST_DIFF_COUNTRY = 3, |
| HWSIM_REGTEST_WORLD_ROAM = 4, |
| HWSIM_REGTEST_CUSTOM_WORLD = 5, |
| HWSIM_REGTEST_CUSTOM_WORLD_2 = 6, |
| HWSIM_REGTEST_STRICT_FOLLOW = 7, |
| HWSIM_REGTEST_STRICT_ALL = 8, |
| HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9, |
| HWSIM_REGTEST_ALL = 10, |
| }; |
| |
| /* Set to one of the HWSIM_REGTEST_* values above */ |
| static int regtest = HWSIM_REGTEST_DISABLED; |
| module_param(regtest, int, 0444); |
| MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run"); |
| |
| static const char *hwsim_alpha2s[] = { |
| "FI", |
| "AL", |
| "US", |
| "DE", |
| "JP", |
| "AL", |
| }; |
| |
| static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = { |
| .n_reg_rules = 4, |
| .alpha2 = "99", |
| .reg_rules = { |
| REG_RULE(2412-10, 2462+10, 40, 0, 20, 0), |
| REG_RULE(2484-10, 2484+10, 40, 0, 20, 0), |
| REG_RULE(5150-10, 5240+10, 40, 0, 30, 0), |
| REG_RULE(5745-10, 5825+10, 40, 0, 30, 0), |
| } |
| }; |
| |
| static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = { |
| .n_reg_rules = 2, |
| .alpha2 = "99", |
| .reg_rules = { |
| REG_RULE(2412-10, 2462+10, 40, 0, 20, 0), |
| REG_RULE(5725-10, 5850+10, 40, 0, 30, |
| NL80211_RRF_NO_IR), |
| } |
| }; |
| |
| static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = { |
| &hwsim_world_regdom_custom_01, |
| &hwsim_world_regdom_custom_02, |
| }; |
| |
| struct hwsim_vif_priv { |
| u32 magic; |
| u8 bssid[ETH_ALEN]; |
| bool assoc; |
| bool bcn_en; |
| u16 aid; |
| }; |
| |
| #define HWSIM_VIF_MAGIC 0x69537748 |
| |
| static inline void hwsim_check_magic(struct ieee80211_vif *vif) |
| { |
| struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
| WARN(vp->magic != HWSIM_VIF_MAGIC, |
| "Invalid VIF (%p) magic %#x, %pM, %d/%d\n", |
| vif, vp->magic, vif->addr, vif->type, vif->p2p); |
| } |
| |
| static inline void hwsim_set_magic(struct ieee80211_vif *vif) |
| { |
| struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
| vp->magic = HWSIM_VIF_MAGIC; |
| } |
| |
| static inline void hwsim_clear_magic(struct ieee80211_vif *vif) |
| { |
| struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
| vp->magic = 0; |
| } |
| |
| struct hwsim_sta_priv { |
| u32 magic; |
| }; |
| |
| #define HWSIM_STA_MAGIC 0x6d537749 |
| |
| static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta) |
| { |
| struct hwsim_sta_priv *sp = (void *)sta->drv_priv; |
| WARN_ON(sp->magic != HWSIM_STA_MAGIC); |
| } |
| |
| static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta) |
| { |
| struct hwsim_sta_priv *sp = (void *)sta->drv_priv; |
| sp->magic = HWSIM_STA_MAGIC; |
| } |
| |
| static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta) |
| { |
| struct hwsim_sta_priv *sp = (void *)sta->drv_priv; |
| sp->magic = 0; |
| } |
| |
| struct hwsim_chanctx_priv { |
| u32 magic; |
| }; |
| |
| #define HWSIM_CHANCTX_MAGIC 0x6d53774a |
| |
| static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c) |
| { |
| struct hwsim_chanctx_priv *cp = (void *)c->drv_priv; |
| WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC); |
| } |
| |
| static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c) |
| { |
| struct hwsim_chanctx_priv *cp = (void *)c->drv_priv; |
| cp->magic = HWSIM_CHANCTX_MAGIC; |
| } |
| |
| static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c) |
| { |
| struct hwsim_chanctx_priv *cp = (void *)c->drv_priv; |
| cp->magic = 0; |
| } |
| |
| static unsigned int hwsim_net_id; |
| |
| static int hwsim_netgroup; |
| |
| struct hwsim_net { |
| int netgroup; |
| u32 wmediumd; |
| }; |
| |
| static inline int hwsim_net_get_netgroup(struct net *net) |
| { |
| struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id); |
| |
| return hwsim_net->netgroup; |
| } |
| |
| static inline void hwsim_net_set_netgroup(struct net *net) |
| { |
| struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id); |
| |
| hwsim_net->netgroup = hwsim_netgroup++; |
| } |
| |
| static inline u32 hwsim_net_get_wmediumd(struct net *net) |
| { |
| struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id); |
| |
| return hwsim_net->wmediumd; |
| } |
| |
| static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid) |
| { |
| struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id); |
| |
| hwsim_net->wmediumd = portid; |
| } |
| |
| static struct class *hwsim_class; |
| |
| static struct net_device *hwsim_mon; /* global monitor netdev */ |
| |
| #define CHAN2G(_freq) { \ |
| .band = NL80211_BAND_2GHZ, \ |
| .center_freq = (_freq), \ |
| .hw_value = (_freq), \ |
| .max_power = 20, \ |
| } |
| |
| #define CHAN5G(_freq) { \ |
| .band = NL80211_BAND_5GHZ, \ |
| .center_freq = (_freq), \ |
| .hw_value = (_freq), \ |
| .max_power = 20, \ |
| } |
| |
| static const struct ieee80211_channel hwsim_channels_2ghz[] = { |
| CHAN2G(2412), /* Channel 1 */ |
| CHAN2G(2417), /* Channel 2 */ |
| CHAN2G(2422), /* Channel 3 */ |
| CHAN2G(2427), /* Channel 4 */ |
| CHAN2G(2432), /* Channel 5 */ |
| CHAN2G(2437), /* Channel 6 */ |
| CHAN2G(2442), /* Channel 7 */ |
| CHAN2G(2447), /* Channel 8 */ |
| CHAN2G(2452), /* Channel 9 */ |
| CHAN2G(2457), /* Channel 10 */ |
| CHAN2G(2462), /* Channel 11 */ |
| CHAN2G(2467), /* Channel 12 */ |
| CHAN2G(2472), /* Channel 13 */ |
| CHAN2G(2484), /* Channel 14 */ |
| }; |
| |
| static const struct ieee80211_channel hwsim_channels_5ghz[] = { |
| CHAN5G(5180), /* Channel 36 */ |
| CHAN5G(5200), /* Channel 40 */ |
| CHAN5G(5220), /* Channel 44 */ |
| CHAN5G(5240), /* Channel 48 */ |
| |
| CHAN5G(5260), /* Channel 52 */ |
| CHAN5G(5280), /* Channel 56 */ |
| CHAN5G(5300), /* Channel 60 */ |
| CHAN5G(5320), /* Channel 64 */ |
| |
| CHAN5G(5500), /* Channel 100 */ |
| CHAN5G(5520), /* Channel 104 */ |
| CHAN5G(5540), /* Channel 108 */ |
| CHAN5G(5560), /* Channel 112 */ |
| CHAN5G(5580), /* Channel 116 */ |
| CHAN5G(5600), /* Channel 120 */ |
| CHAN5G(5620), /* Channel 124 */ |
| CHAN5G(5640), /* Channel 128 */ |
| CHAN5G(5660), /* Channel 132 */ |
| CHAN5G(5680), /* Channel 136 */ |
| CHAN5G(5700), /* Channel 140 */ |
| |
| CHAN5G(5745), /* Channel 149 */ |
| CHAN5G(5765), /* Channel 153 */ |
| CHAN5G(5785), /* Channel 157 */ |
| CHAN5G(5805), /* Channel 161 */ |
| CHAN5G(5825), /* Channel 165 */ |
| CHAN5G(5845), /* Channel 169 */ |
| }; |
| |
| static const struct ieee80211_rate hwsim_rates[] = { |
| { .bitrate = 10 }, |
| { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| { .bitrate = 60 }, |
| { .bitrate = 90 }, |
| { .bitrate = 120 }, |
| { .bitrate = 180 }, |
| { .bitrate = 240 }, |
| { .bitrate = 360 }, |
| { .bitrate = 480 }, |
| { .bitrate = 540 } |
| }; |
| |
| #define OUI_QCA 0x001374 |
| #define QCA_NL80211_SUBCMD_TEST 1 |
| enum qca_nl80211_vendor_subcmds { |
| QCA_WLAN_VENDOR_ATTR_TEST = 8, |
| QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST |
| }; |
| |
| static const struct nla_policy |
| hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = { |
| [QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 }, |
| }; |
| |
| static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy, |
| struct wireless_dev *wdev, |
| const void *data, int data_len) |
| { |
| struct sk_buff *skb; |
| struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1]; |
| int err; |
| u32 val; |
| |
| err = nla_parse(tb, QCA_WLAN_VENDOR_ATTR_MAX, data, data_len, |
| hwsim_vendor_test_policy, NULL); |
| if (err) |
| return err; |
| if (!tb[QCA_WLAN_VENDOR_ATTR_TEST]) |
| return -EINVAL; |
| val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]); |
| wiphy_debug(wiphy, "%s: test=%u\n", __func__, val); |
| |
| /* Send a vendor event as a test. Note that this would not normally be |
| * done within a command handler, but rather, based on some other |
| * trigger. For simplicity, this command is used to trigger the event |
| * here. |
| * |
| * event_idx = 0 (index in mac80211_hwsim_vendor_commands) |
| */ |
| skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL); |
| if (skb) { |
| /* skb_put() or nla_put() will fill up data within |
| * NL80211_ATTR_VENDOR_DATA. |
| */ |
| |
| /* Add vendor data */ |
| nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1); |
| |
| /* Send the event - this will call nla_nest_end() */ |
| cfg80211_vendor_event(skb, GFP_KERNEL); |
| } |
| |
| /* Send a response to the command */ |
| skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10); |
| if (!skb) |
| return -ENOMEM; |
| |
| /* skb_put() or nla_put() will fill up data within |
| * NL80211_ATTR_VENDOR_DATA |
| */ |
| nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2); |
| |
| return cfg80211_vendor_cmd_reply(skb); |
| } |
| |
| static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = { |
| { |
| .info = { .vendor_id = OUI_QCA, |
| .subcmd = QCA_NL80211_SUBCMD_TEST }, |
| .flags = WIPHY_VENDOR_CMD_NEED_NETDEV, |
| .doit = mac80211_hwsim_vendor_cmd_test, |
| } |
| }; |
| |
| /* Advertise support vendor specific events */ |
| static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = { |
| { .vendor_id = OUI_QCA, .subcmd = 1 }, |
| }; |
| |
| static const struct ieee80211_iface_limit hwsim_if_limits[] = { |
| { .max = 1, .types = BIT(NL80211_IFTYPE_ADHOC) }, |
| { .max = 2048, .types = BIT(NL80211_IFTYPE_STATION) | |
| BIT(NL80211_IFTYPE_P2P_CLIENT) | |
| #ifdef CONFIG_MAC80211_MESH |
| BIT(NL80211_IFTYPE_MESH_POINT) | |
| #endif |
| BIT(NL80211_IFTYPE_AP) | |
| BIT(NL80211_IFTYPE_P2P_GO) }, |
| /* must be last, see hwsim_if_comb */ |
| { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) } |
| }; |
| |
| static const struct ieee80211_iface_combination hwsim_if_comb[] = { |
| { |
| .limits = hwsim_if_limits, |
| /* remove the last entry which is P2P_DEVICE */ |
| .n_limits = ARRAY_SIZE(hwsim_if_limits) - 1, |
| .max_interfaces = 2048, |
| .num_different_channels = 1, |
| .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | |
| BIT(NL80211_CHAN_WIDTH_20) | |
| BIT(NL80211_CHAN_WIDTH_40) | |
| BIT(NL80211_CHAN_WIDTH_80) | |
| BIT(NL80211_CHAN_WIDTH_160), |
| }, |
| }; |
| |
| static const struct ieee80211_iface_combination hwsim_if_comb_p2p_dev[] = { |
| { |
| .limits = hwsim_if_limits, |
| .n_limits = ARRAY_SIZE(hwsim_if_limits), |
| .max_interfaces = 2048, |
| .num_different_channels = 1, |
| .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | |
| BIT(NL80211_CHAN_WIDTH_20) | |
| BIT(NL80211_CHAN_WIDTH_40) | |
| BIT(NL80211_CHAN_WIDTH_80) | |
| BIT(NL80211_CHAN_WIDTH_160), |
| }, |
| }; |
| |
| static spinlock_t hwsim_radio_lock; |
| static LIST_HEAD(hwsim_radios); |
| static int hwsim_radio_idx; |
| |
| static struct platform_driver mac80211_hwsim_driver = { |
| .driver = { |
| .name = "mac80211_hwsim", |
| }, |
| }; |
| |
| struct mac80211_hwsim_data { |
| struct list_head list; |
| struct ieee80211_hw *hw; |
| struct device *dev; |
| struct ieee80211_supported_band bands[NUM_NL80211_BANDS]; |
| struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)]; |
| struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)]; |
| struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)]; |
| struct ieee80211_iface_combination if_combination; |
| |
| struct mac_address addresses[2]; |
| int channels, idx; |
| bool use_chanctx; |
| bool destroy_on_close; |
| struct work_struct destroy_work; |
| u32 portid; |
| char alpha2[2]; |
| const struct ieee80211_regdomain *regd; |
| |
| struct ieee80211_channel *tmp_chan; |
| struct ieee80211_channel *roc_chan; |
| u32 roc_duration; |
| struct delayed_work roc_start; |
| struct delayed_work roc_done; |
| struct delayed_work hw_scan; |
| struct cfg80211_scan_request *hw_scan_request; |
| struct ieee80211_vif *hw_scan_vif; |
| int scan_chan_idx; |
| u8 scan_addr[ETH_ALEN]; |
| struct { |
| struct ieee80211_channel *channel; |
| unsigned long next_start, start, end; |
| } survey_data[ARRAY_SIZE(hwsim_channels_2ghz) + |
| ARRAY_SIZE(hwsim_channels_5ghz)]; |
| |
| struct ieee80211_channel *channel; |
| u64 beacon_int /* beacon interval in us */; |
| unsigned int rx_filter; |
| bool started, idle, scanning; |
| struct mutex mutex; |
| struct tasklet_hrtimer beacon_timer; |
| enum ps_mode { |
| PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL |
| } ps; |
| bool ps_poll_pending; |
| struct dentry *debugfs; |
| |
| uintptr_t pending_cookie; |
| struct sk_buff_head pending; /* packets pending */ |
| /* |
| * Only radios in the same group can communicate together (the |
| * channel has to match too). Each bit represents a group. A |
| * radio can be in more than one group. |
| */ |
| u64 group; |
| |
| /* group shared by radios created in the same netns */ |
| int netgroup; |
| /* wmediumd portid responsible for netgroup of this radio */ |
| u32 wmediumd; |
| |
| /* difference between this hw's clock and the real clock, in usecs */ |
| s64 tsf_offset; |
| s64 bcn_delta; |
| /* absolute beacon transmission time. Used to cover up "tx" delay. */ |
| u64 abs_bcn_ts; |
| |
| /* Stats */ |
| u64 tx_pkts; |
| u64 rx_pkts; |
| u64 tx_bytes; |
| u64 rx_bytes; |
| u64 tx_dropped; |
| u64 tx_failed; |
| }; |
| |
| |
| struct hwsim_radiotap_hdr { |
| struct ieee80211_radiotap_header hdr; |
| __le64 rt_tsft; |
| u8 rt_flags; |
| u8 rt_rate; |
| __le16 rt_channel; |
| __le16 rt_chbitmask; |
| } __packed; |
| |
| struct hwsim_radiotap_ack_hdr { |
| struct ieee80211_radiotap_header hdr; |
| u8 rt_flags; |
| u8 pad; |
| __le16 rt_channel; |
| __le16 rt_chbitmask; |
| } __packed; |
| |
| /* MAC80211_HWSIM netlink family */ |
| static struct genl_family hwsim_genl_family; |
| |
| enum hwsim_multicast_groups { |
| HWSIM_MCGRP_CONFIG, |
| }; |
| |
| static const struct genl_multicast_group hwsim_mcgrps[] = { |
| [HWSIM_MCGRP_CONFIG] = { .name = "config", }, |
| }; |
| |
| /* 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 }, |
| [HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG }, |
| [HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING }, |
| [HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG }, |
| [HWSIM_ATTR_FREQ] = { .type = NLA_U32 }, |
| }; |
| |
| 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 = 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 = 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; |
| |
| local_bh_disable(); |
| if (val == PS_MANUAL_POLL) { |
| ieee80211_iterate_active_interfaces_atomic( |
| 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_atomic( |
| data->hw, IEEE80211_IFACE_ITER_NORMAL, |
| hwsim_send_nullfunc_ps, data); |
| } else if (old_ps != PS_DISABLED && val == PS_DISABLED) { |
| ieee80211_iterate_active_interfaces_atomic( |
| data->hw, IEEE80211_IFACE_ITER_NORMAL, |
| hwsim_send_nullfunc_no_ps, data); |
| } |
| local_bh_enable(); |
| |
| 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 = abs(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 = -(s64)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 (WARN_ON(!txrate)) |
| return; |
| |
| if (!netif_running(hwsim_mon)) |
| return; |
| |
| skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC); |
| if (skb == NULL) |
| return; |
| |
| 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_reset_mac_header(skb); |
| 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 = 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 = 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_reset_mac_header(skb); |
| 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, |
| }; |
| |
| if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0) |
| return true; |
| |
| 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 int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data, |
| struct sk_buff *skb, int portid) |
| { |
| struct net *net; |
| bool found = false; |
| int res = -ENOENT; |
| |
| rcu_read_lock(); |
| for_each_net_rcu(net) { |
| if (data->netgroup == hwsim_net_get_netgroup(net)) { |
| res = genlmsg_unicast(net, skb, portid); |
| found = true; |
| break; |
| } |
| } |
| rcu_read_unlock(); |
| |
| if (!found) |
| nlmsg_free(skb); |
| |
| return res; |
| } |
| |
| 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]; |
| uintptr_t cookie; |
| |
| 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) { |
| ieee80211_free_txskb(hw, skb_dequeue(&data->pending)); |
| data->tx_dropped++; |
| } |
| } |
| |
| 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; |
| |
| if (nla_put_u32(skb, HWSIM_ATTR_FREQ, data->channel->center_freq)) |
| 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 */ |
| data->pending_cookie++; |
| cookie = data->pending_cookie; |
| info->rate_driver_data[0] = (void *)cookie; |
| if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD)) |
| goto nla_put_failure; |
| |
| genlmsg_end(skb, msg_head); |
| if (hwsim_unicast_netgroup(data, skb, dst_portid)) |
| goto err_free_txskb; |
| |
| /* Enqueue the packet */ |
| skb_queue_tail(&data->pending, my_skb); |
| data->tx_pkts++; |
| data->tx_bytes += my_skb->len; |
| return; |
| |
| nla_put_failure: |
| nlmsg_free(skb); |
| err_free_txskb: |
| printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__); |
| ieee80211_free_txskb(hw, my_skb); |
| data->tx_failed++; |
| } |
| |
| 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 void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb) |
| { |
| /* |
| * To enable this code, #define the HWSIM_RADIOTAP_OUI, |
| * e.g. like this: |
| * #define HWSIM_RADIOTAP_OUI "\x02\x00\x00" |
| * (but you should use a valid OUI, not that) |
| * |
| * If anyone wants to 'donate' a radiotap OUI/subns code |
| * please send a patch removing this #ifdef and changing |
| * the values accordingly. |
| */ |
| #ifdef HWSIM_RADIOTAP_OUI |
| struct ieee80211_vendor_radiotap *rtap; |
| |
| /* |
| * Note that this code requires the headroom in the SKB |
| * that was allocated earlier. |
| */ |
| rtap = skb_push(skb, sizeof(*rtap) + 8 + 4); |
| rtap->oui[0] = HWSIM_RADIOTAP_OUI[0]; |
| rtap->oui[1] = HWSIM_RADIOTAP_OUI[1]; |
| rtap->oui[2] = HWSIM_RADIOTAP_OUI[2]; |
| rtap->subns = 127; |
| |
| /* |
| * Radiotap vendor namespaces can (and should) also be |
| * split into fields by using the standard radiotap |
| * presence bitmap mechanism. Use just BIT(0) here for |
| * the presence bitmap. |
| */ |
| rtap->present = BIT(0); |
| /* We have 8 bytes of (dummy) data */ |
| rtap->len = 8; |
| /* For testing, also require it to be aligned */ |
| rtap->align = 8; |
| /* And also test that padding works, 4 bytes */ |
| rtap->pad = 4; |
| /* push the data */ |
| memcpy(rtap->data, "ABCDEFGH", 8); |
| /* make sure to clear padding, mac80211 doesn't */ |
| memset(rtap->data + 8, 0, 4); |
| |
| IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA; |
| #endif |
| } |
| |
| 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.nss = |
| ieee80211_rate_get_vht_nss(&info->control.rates[0]); |
| rx_status.encoding = RX_ENC_VHT; |
| } else { |
| rx_status.rate_idx = info->control.rates[0].idx; |
| if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS) |
| rx_status.encoding = RX_ENC_HT; |
| } |
| if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
| rx_status.bw = RATE_INFO_BW_40; |
| else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH) |
| rx_status.bw = RATE_INFO_BW_80; |
| else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH) |
| rx_status.bw = RATE_INFO_BW_160; |
| else |
| rx_status.bw = RATE_INFO_BW_20; |
| if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI) |
| rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI; |
| /* TODO: simulate real signal strength (and optional packet loss) */ |
| rx_status.signal = -50; |
| if (info->control.vif) |
| rx_status.signal += info->control.vif->bss_conf.txpower; |
| |
| 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 (data->netgroup != data2->netgroup) |
| 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)); |
| |
| mac80211_hwsim_add_vendor_rtap(nskb); |
| |
| data2->rx_pkts++; |
| data2->rx_bytes += nskb->len; |
| 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_hdr *hdr = (void *)skb->data; |
| 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 (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) |
| ieee80211_get_tx_rates(txi->control.vif, control->sta, skb, |
| txi->control.rates, |
| ARRAY_SIZE(txi->control.rates)); |
| |
| if (skb->len >= 24 + 8 && |
| ieee80211_is_probe_resp(hdr->frame_control)) { |
| /* fake header transmission time */ |
| struct ieee80211_mgmt *mgmt; |
| struct ieee80211_rate *txrate; |
| u64 ts; |
| |
| mgmt = (struct ieee80211_mgmt *)skb->data; |
| txrate = ieee80211_get_tx_rate(hw, txi); |
| ts = mac80211_hwsim_get_tsf_raw(); |
| mgmt->u.probe_resp.timestamp = |
| cpu_to_le64(ts + data->tsf_offset + |
| 24 * 8 * 10 / txrate->bitrate); |
| } |
| |
| mac80211_hwsim_monitor_rx(hw, skb, channel); |
| |
| /* wmediumd mode check */ |
| _portid = ACCESS_ONCE(data->wmediumd); |
| |
| if (_portid) |
| return mac80211_hwsim_tx_frame_nl(hw, skb, _portid); |
| |
| /* NO wmediumd detected, perfect medium simulation */ |
| data->tx_pkts++; |
| data->tx_bytes += skb->len; |
| ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel); |
| |
| if (ack && skb->len >= 16) |
| 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) |
| { |
| struct mac80211_hwsim_data *data = hw->priv; |
| u32 _pid = ACCESS_ONCE(data->wmediumd); |
| |
| if (ieee80211_hw_check(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 (ieee80211_hw_check(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", |
| }; |
| int idx; |
| |
| 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); |
| |
| WARN_ON(conf->chandef.chan && data->use_chanctx); |
| |
| mutex_lock(&data->mutex); |
| if (data->scanning && conf->chandef.chan) { |
| for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) { |
| if (data->survey_data[idx].channel == data->channel) { |
| data->survey_data[idx].start = |
| data->survey_data[idx].next_start; |
| data->survey_data[idx].end = jiffies; |
| break; |
| } |
| } |
| |
| data->channel = conf->chandef.chan; |
| |
| for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) { |
| if (data->survey_data[idx].channel && |
| data->survey_data[idx].channel != data->channel) |
| continue; |
| data->survey_data[idx].channel = data->channel; |
| data->survey_data[idx].next_start = jiffies; |
| break; |
| } |
| } else { |
| data->channel = conf->chandef.chan; |
| } |
| mutex_unlock(&data->mutex); |
| |
| 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_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_ENABLED) { |
| wiphy_debug(hw->wiphy, " BCN EN: %d (BI=%u)\n", |
| info->enable_beacon, info->beacon_int); |
| 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; |
| data->beacon_int = info->beacon_int * 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); |
| data->beacon_int = 0; |
| } |
| } |
| } |
| |
| 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 mac80211_hwsim_data *hwsim = hw->priv; |
| |
| if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data)) |
| return -ENOENT; |
| |
| mutex_lock(&hwsim->mutex); |
| survey->channel = hwsim->survey_data[idx].channel; |
| if (!survey->channel) { |
| mutex_unlock(&hwsim->mutex); |
| return -ENOENT; |
| } |
| |
| /* |
| * Magically conjured dummy values --- this is only ok for simulated hardware. |
| * |
| * A real driver which cannot determine real values noise MUST NOT |
| * report any, especially not a magically conjured ones :-) |
| */ |
| survey->filled = SURVEY_INFO_NOISE_DBM | |
| SURVEY_INFO_TIME | |
| SURVEY_INFO_TIME_BUSY; |
| survey->noise = -92; |
| survey->time = |
| jiffies_to_msecs(hwsim->survey_data[idx].end - |
| hwsim->survey_data[idx].start); |
| /* report 12.5% of channel time is used */ |
| survey->time_busy = survey->time/8; |
| mutex_unlock(&hwsim->mutex); |
| |
| 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, NULL); |
| 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, |
| struct ieee80211_ampdu_params *params) |
| { |
| struct ieee80211_sta *sta = params->sta; |
| enum ieee80211_ampdu_mlme_action action = params->action; |
| u16 tid = params->tid; |
| |
| 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) { |
| struct cfg80211_scan_info info = { |
| .aborted = false, |
| }; |
| |
| wiphy_debug(hwsim->hw->wiphy, "hw scan complete\n"); |
| ieee80211_scan_completed(hwsim->hw, &info); |
| 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 | |
| IEEE80211_CHAN_RADAR) || |
| !req->n_ssids) { |
| dwell = 120; |
| } else { |
| dwell = 30; |
| /* send probes */ |
| for (i = 0; i < req->n_ssids; i++) { |
| struct sk_buff *probe; |
| struct ieee80211_mgmt *mgmt; |
| |
| probe = ieee80211_probereq_get(hwsim->hw, |
| hwsim->scan_addr, |
| req->ssids[i].ssid, |
| req->ssids[i].ssid_len, |
| req->ie_len); |
| if (!probe) |
| continue; |
| |
| mgmt = (struct ieee80211_mgmt *) probe->data; |
| memcpy(mgmt->da, req->bssid, ETH_ALEN); |
| memcpy(mgmt->bssid, req->bssid, ETH_ALEN); |
| |
| if (req->ie_len) |
| skb_put_data(probe, 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->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan; |
| hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies; |
| hwsim->survey_data[hwsim->scan_chan_idx].end = |
| jiffies + 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; |
| if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) |
| get_random_mask_addr(hwsim->scan_addr, |
| hw_req->req.mac_addr, |
| hw_req->req.mac_addr_mask); |
| else |
| memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN); |
| memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data)); |
| 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; |
| struct cfg80211_scan_info info = { |
| .aborted = true, |
| }; |
| |
| 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, &info); |
| 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 ieee80211_vif *vif, |
| const u8 *mac_addr) |
| { |
| 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"); |
| |
| memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN); |
| hwsim->scanning = true; |
| memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data)); |
| |
| out: |
| mutex_unlock(&hwsim->mutex); |
| } |
| |
| static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct mac80211_hwsim_data *hwsim = hw->priv; |
| |
| mutex_lock(&hwsim->mutex); |
| |
| printk(KERN_DEBUG "hwsim sw_scan_complete\n"); |
| hwsim->scanning = false; |
| eth_zero_addr(hwsim->scan_addr); |
| |
| mutex_unlock(&hwsim->mutex); |
| } |
| |
| static void hw_roc_start(struct work_struct *work) |
| { |
| struct mac80211_hwsim_data *hwsim = |
| container_of(work, struct mac80211_hwsim_data, roc_start.work); |
| |
| mutex_lock(&hwsim->mutex); |
| |
| wiphy_debug(hwsim->hw->wiphy, "hwsim ROC begins\n"); |
| hwsim->tmp_chan = hwsim->roc_chan; |
| ieee80211_ready_on_channel(hwsim->hw); |
| |
| ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done, |
| msecs_to_jiffies(hwsim->roc_duration)); |
| |
| 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->roc_chan = chan; |
| hwsim->roc_duration = duration; |
| mutex_unlock(&hwsim->mutex); |
| |
| wiphy_debug(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n", |
| chan->center_freq, duration); |
| ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50); |
| |
| return 0; |
| } |
| |
| static int mac80211_hwsim_croc(struct ieee80211_hw *hw) |
| { |
| struct mac80211_hwsim_data *hwsim = hw->priv; |
| |
| cancel_delayed_work_sync(&hwsim->roc_start); |
| 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 char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = { |
| "tx_pkts_nic", |
| "tx_bytes_nic", |
| "rx_pkts_nic", |
| "rx_bytes_nic", |
| "d_tx_dropped", |
| "d_tx_failed", |
| "d_ps_mode", |
| "d_group", |
| }; |
| |
| #define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats) |
| |
| static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| u32 sset, u8 *data) |
| { |
| if (sset == ETH_SS_STATS) |
| memcpy(data, *mac80211_hwsim_gstrings_stats, |
| sizeof(mac80211_hwsim_gstrings_stats)); |
| } |
| |
| static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, int sset) |
| { |
| if (sset == ETH_SS_STATS) |
| return MAC80211_HWSIM_SSTATS_LEN; |
| return 0; |
| } |
| |
| static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ethtool_stats *stats, u64 *data) |
| { |
| struct mac80211_hwsim_data *ar = hw->priv; |
| int i = 0; |
| |
| data[i++] = ar->tx_pkts; |
| data[i++] = ar->tx_bytes; |
| data[i++] = ar->rx_pkts; |
| data[i++] = ar->rx_bytes; |
| data[i++] = ar->tx_dropped; |
| data[i++] = ar->tx_failed; |
| data[i++] = ar->ps; |
| data[i++] = ar->group; |
| |
| WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN); |
| } |
| |
| #define HWSIM_COMMON_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, \ |
| .flush = mac80211_hwsim_flush, \ |
| .get_tsf = mac80211_hwsim_get_tsf, \ |
| .set_tsf = mac80211_hwsim_set_tsf, \ |
| .get_et_sset_count = mac80211_hwsim_get_et_sset_count, \ |
| .get_et_stats = mac80211_hwsim_get_et_stats, \ |
| .get_et_strings = mac80211_hwsim_get_et_strings, |
| |
| static const struct ieee80211_ops mac80211_hwsim_ops = { |
| HWSIM_COMMON_OPS |
| .sw_scan_start = mac80211_hwsim_sw_scan, |
| .sw_scan_complete = mac80211_hwsim_sw_scan_complete, |
| }; |
| |
| static const struct ieee80211_ops mac80211_hwsim_mchan_ops = { |
| HWSIM_COMMON_OPS |
| .hw_scan = mac80211_hwsim_hw_scan, |
| .cancel_hw_scan = mac80211_hwsim_cancel_hw_scan, |
| .sw_scan_start = NULL, |
| .sw_scan_complete = NULL, |
| .remain_on_channel = mac80211_hwsim_roc, |
| .cancel_remain_on_channel = mac80211_hwsim_croc, |
| .add_chanctx = mac80211_hwsim_add_chanctx, |
| .remove_chanctx = mac80211_hwsim_remove_chanctx, |
| .change_chanctx = mac80211_hwsim_change_chanctx, |
| .assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx, |
| .unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx, |
| }; |
| |
| struct hwsim_new_radio_params { |
| unsigned int channels; |
| const char *reg_alpha2; |
| const struct ieee80211_regdomain *regd; |
| bool reg_strict; |
| bool p2p_device; |
| bool use_chanctx; |
| bool destroy_on_close; |
| const char *hwname; |
| bool no_vif; |
| }; |
| |
| static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb, |
| struct genl_info *info) |
| { |
| if (info) |
| genl_notify(&hwsim_genl_family, mcast_skb, info, |
| HWSIM_MCGRP_CONFIG, GFP_KERNEL); |
| else |
| genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0, |
| HWSIM_MCGRP_CONFIG, GFP_KERNEL); |
| } |
| |
| static int append_radio_msg(struct sk_buff *skb, int id, |
| struct hwsim_new_radio_params *param) |
| { |
| int ret; |
| |
| ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id); |
| if (ret < 0) |
| return ret; |
| |
| if (param->channels) { |
| ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (param->reg_alpha2) { |
| ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2, |
| param->reg_alpha2); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (param->regd) { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) { |
| if (hwsim_world_regdom_custom[i] != param->regd) |
| continue; |
| |
| ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i); |
| if (ret < 0) |
| return ret; |
| break; |
| } |
| } |
| |
| if (param->reg_strict) { |
| ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (param->p2p_device) { |
| ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (param->use_chanctx) { |
| ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (param->hwname) { |
| ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, |
| strlen(param->hwname), param->hwname); |
| if (ret < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static void hwsim_mcast_new_radio(int id, struct genl_info *info, |
| struct hwsim_new_radio_params *param) |
| { |
| struct sk_buff *mcast_skb; |
| void *data; |
| |
| mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!mcast_skb) |
| return; |
| |
| data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0, |
| HWSIM_CMD_NEW_RADIO); |
| if (!data) |
| goto out_err; |
| |
| if (append_radio_msg(mcast_skb, id, param) < 0) |
| goto out_err; |
| |
| genlmsg_end(mcast_skb, data); |
| |
| hwsim_mcast_config_msg(mcast_skb, info); |
| return; |
| |
| out_err: |
| genlmsg_cancel(mcast_skb, data); |
| nlmsg_free(mcast_skb); |
| } |
| |
| static int mac80211_hwsim_new_radio(struct genl_info *info, |
| struct hwsim_new_radio_params *param) |
| { |
| int err; |
| u8 addr[ETH_ALEN]; |
| struct mac80211_hwsim_data *data; |
| struct ieee80211_hw *hw; |
| enum nl80211_band band; |
| const struct ieee80211_ops *ops = &mac80211_hwsim_ops; |
| struct net *net; |
| int idx; |
| |
| if (WARN_ON(param->channels > 1 && !param->use_chanctx)) |
| return -EINVAL; |
| |
| spin_lock_bh(&hwsim_radio_lock); |
| idx = hwsim_radio_idx++; |
| spin_unlock_bh(&hwsim_radio_lock); |
| |
| if (param->use_chanctx) |
| ops = &mac80211_hwsim_mchan_ops; |
| hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname); |
| if (!hw) { |
| printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw failed\n"); |
| err = -ENOMEM; |
| goto failed; |
| } |
| |
| /* ieee80211_alloc_hw_nm may have used a default name */ |
| param->hwname = wiphy_name(hw->wiphy); |
| |
| if (info) |
| net = genl_info_net(info); |
| else |
| net = &init_net; |
| wiphy_net_set(hw->wiphy, net); |
| |
| 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_bind; |
| } |
| |
| skb_queue_head_init(&data->pending); |
| |
| SET_IEEE80211_DEV(hw, data->dev); |
| eth_zero_addr(addr); |
| 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 = param->channels; |
| data->use_chanctx = param->use_chanctx; |
| data->idx = idx; |
| data->destroy_on_close = param->destroy_on_close; |
| if (info) |
| data->portid = info->snd_portid; |
| |
| 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; |
| hw->wiphy->iface_combinations = &data->if_combination; |
| if (param->p2p_device) |
| data->if_combination = hwsim_if_comb_p2p_dev[0]; |
| else |
| data->if_combination = hwsim_if_comb[0]; |
| hw->wiphy->n_iface_combinations = 1; |
| /* For channels > 1 DFS is not allowed */ |
| data->if_combination.radar_detect_widths = 0; |
| data->if_combination.num_different_channels = data->channels; |
| } else if (param->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_start, hw_roc_start); |
| 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 (param->p2p_device) |
| hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_DEVICE); |
| |
| ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); |
| ieee80211_hw_set(hw, CHANCTX_STA_CSA); |
| ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES); |
| ieee80211_hw_set(hw, QUEUE_CONTROL); |
| ieee80211_hw_set(hw, WANT_MONITOR_VIF); |
| ieee80211_hw_set(hw, AMPDU_AGGREGATION); |
| ieee80211_hw_set(hw, MFP_CAPABLE); |
| ieee80211_hw_set(hw, SIGNAL_DBM); |
| ieee80211_hw_set(hw, TDLS_WIDER_BW); |
| if (rctbl) |
| ieee80211_hw_set(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 | |
| NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; |
| wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); |
| |
| /* 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 = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { |
| struct ieee80211_supported_band *sband = &data->bands[band]; |
| switch (band) { |
| case NL80211_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 NL80211_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; |
| |
| 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_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_9 << 0 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 | |
| IEEE80211_VHT_MCS_SUPPORT_0_9 << 14); |
| sband->vht_cap.vht_mcs.tx_mcs_map = |
| sband->vht_cap.vht_mcs.rx_mcs_map; |
| 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_20 | |
| 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; |
| } |
| |
| /* By default all radios belong to the first group */ |
| data->group = 1; |
| mutex_init(&data->mutex); |
| |
| data->netgroup = hwsim_net_get_netgroup(net); |
| |
| /* Enable frame retransmissions for lossy channels */ |
| hw->max_rates = 4; |
| hw->max_rate_tries = 11; |
| |
| hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands; |
| hw->wiphy->n_vendor_commands = |
| ARRAY_SIZE(mac80211_hwsim_vendor_commands); |
| hw->wiphy->vendor_events = mac80211_hwsim_vendor_events; |
| hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events); |
| |
| if (param->reg_strict) |
| hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG; |
| if (param->regd) { |
| data->regd = param->regd; |
| hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; |
| wiphy_apply_custom_regulatory(hw->wiphy, param->regd); |
| /* give the regulatory workqueue a chance to run */ |
| schedule_timeout_interruptible(1); |
| } |
| |
| if (param->no_vif) |
| ieee80211_hw_set(hw, NO_AUTO_VIF); |
| |
| wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); |
| |
| 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 (param->reg_alpha2) { |
| data->alpha2[0] = param->reg_alpha2[0]; |
| data->alpha2[1] = param->reg_alpha2[1]; |
| regulatory_hint(hw->wiphy, param->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, HRTIMER_MODE_ABS); |
| |
| spin_lock_bh(&hwsim_radio_lock); |
| list_add_tail(&data->list, &hwsim_radios); |
| spin_unlock_bh(&hwsim_radio_lock); |
| |
| if (idx > 0) |
| hwsim_mcast_new_radio(idx, info, param); |
| |
| return idx; |
| |
| failed_hw: |
| device_release_driver(data->dev); |
| failed_bind: |
| device_unregister(data->dev); |
| failed_drvdata: |
| ieee80211_free_hw(hw); |
| failed: |
| return err; |
| } |
| |
| static void hwsim_mcast_del_radio(int id, const char *hwname, |
| struct genl_info *info) |
| { |
| struct sk_buff *skb; |
| void *data; |
| int ret; |
| |
| skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); |
| if (!skb) |
| return; |
| |
| data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0, |
| HWSIM_CMD_DEL_RADIO); |
| if (!data) |
| goto error; |
| |
| ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id); |
| if (ret < 0) |
| goto error; |
| |
| ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname), |
| hwname); |
| if (ret < 0) |
| goto error; |
| |
| genlmsg_end(skb, data); |
| |
| hwsim_mcast_config_msg(skb, info); |
| |
| return; |
| |
| error: |
| nlmsg_free(skb); |
| } |
| |
| static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data, |
| const char *hwname, |
| struct genl_info *info) |
| { |
| hwsim_mcast_del_radio(data->idx, hwname, info); |
| 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 int mac80211_hwsim_get_radio(struct sk_buff *skb, |
| struct mac80211_hwsim_data *data, |
| u32 portid, u32 seq, |
| struct netlink_callback *cb, int flags) |
| { |
| void *hdr; |
| struct hwsim_new_radio_params param = { }; |
| int res = -EMSGSIZE; |
| |
| hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags, |
| HWSIM_CMD_GET_RADIO); |
| if (!hdr) |
| return -EMSGSIZE; |
| |
| if (cb) |
| genl_dump_check_consistent(cb, hdr, &hwsim_genl_family); |
| |
| if (data->alpha2[0] && data->alpha2[1]) |
| param.reg_alpha2 = data->alpha2; |
| |
| param.reg_strict = !!(data->hw->wiphy->regulatory_flags & |
| REGULATORY_STRICT_REG); |
| param.p2p_device = !!(data->hw->wiphy->interface_modes & |
| BIT(NL80211_IFTYPE_P2P_DEVICE)); |
| param.use_chanctx = data->use_chanctx; |
| param.regd = data->regd; |
| param.channels = data->channels; |
| param.hwname = wiphy_name(data->hw->wiphy); |
| |
| res = append_radio_msg(skb, data->idx, ¶m); |
| if (res < 0) |
| goto out_err; |
| |
| genlmsg_end(skb, hdr); |
| return 0; |
| |
| out_err: |
| genlmsg_cancel(skb, hdr); |
| return res; |
| } |
| |
| 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_del_radio(data, wiphy_name(data->hw->wiphy), |
| NULL); |
| 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_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->needs_free_netdev = true; |
| ether_setup(dev); |
| dev->priv_flags |= IFF_NO_QUEUE; |
| dev->type = ARPHRD_IEEE80211_RADIOTAP; |
| eth_zero_addr(dev->dev_addr); |
| 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 void hwsim_register_wmediumd(struct net *net, u32 portid) |
| { |
| struct mac80211_hwsim_data *data; |
| |
| hwsim_net_set_wmediumd(net, portid); |
| |
| spin_lock_bh(&hwsim_radio_lock); |
| list_for_each_entry(data, &hwsim_radios, list) { |
| if (data->netgroup == hwsim_net_get_netgroup(net)) |
| data->wmediumd = portid; |
| } |
| spin_unlock_bh(&hwsim_radio_lock); |
| } |
| |
| 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; |
| u64 ret_skb_cookie; |
| struct sk_buff *skb, *tmp; |
| const u8 *src; |
| unsigned int hwsim_flags; |
| int i; |
| bool found = false; |
| |
| if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] || |
| !info->attrs[HWSIM_ATTR_FLAGS] || |
| !info->attrs[HWSIM_ATTR_COOKIE] || |
| !info->attrs[HWSIM_ATTR_SIGNAL] || |
| !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_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]); |
| |
| data2 = get_hwsim_data_ref_from_addr(src); |
| if (!data2) |
| goto out; |
| |
| if (hwsim_net_get_netgroup(genl_info_net(info)) != data2->netgroup) |
| goto out; |
| |
| if (info->snd_portid != data2->wmediumd) |
| goto out; |
| |
| /* look for the skb matching the cookie passed back from user */ |
| skb_queue_walk_safe(&data2->pending, skb, tmp) { |
| u64 skb_cookie; |
| |
| txi = IEEE80211_SKB_CB(skb); |
| skb_cookie = (u64)(uintptr_t)txi->rate_driver_data[0]; |
| |
| if (skb_cookie == ret_skb_cookie) { |
| 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->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; |
| |