diff options
Diffstat (limited to 'drivers/net/wireless/mac80211_hwsim.c')
| -rw-r--r-- | drivers/net/wireless/mac80211_hwsim.c | 2582 |
1 files changed, 0 insertions, 2582 deletions
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c deleted file mode 100644 index cb34c7895f2a..000000000000 --- a/drivers/net/wireless/mac80211_hwsim.c +++ /dev/null @@ -1,2582 +0,0 @@ -/* - * 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 "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 u32 wmediumd_portid; - -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"); - -/** - * 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_PASSIVE_SCAN | NL80211_RRF_NO_IBSS), - } -}; - -struct hwsim_vif_priv { - u32 magic; - u8 bssid[ETH_ALEN]; - bool assoc; - 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 struct class *hwsim_class; - -static struct net_device *hwsim_mon; /* global monitor netdev */ - -#define CHAN2G(_freq) { \ - .band = IEEE80211_BAND_2GHZ, \ - .center_freq = (_freq), \ - .hw_value = (_freq), \ - .max_power = 20, \ -} - -#define CHAN5G(_freq) { \ - .band = IEEE80211_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 */ -}; - -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 } -}; - -static spinlock_t hwsim_radio_lock; -static struct list_head hwsim_radios; - -struct mac80211_hwsim_data { - struct list_head list; - struct ieee80211_hw *hw; - struct device *dev; - struct ieee80211_supported_band bands[IEEE80211_NUM_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 mac_address addresses[2]; - - struct ieee80211_channel *tmp_chan; - 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; - - 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; - struct dentry *debugfs_ps; - - 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 then one group. - */ - u64 group; - struct dentry *debugfs_group; - - int power_level; - - /* 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; -}; - - -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; - -/* 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 struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = { - [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC, - .len = 6*sizeof(u8) }, - [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC, - .len = 6*sizeof(u8) }, - [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 }, -}; - -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; - s64 delta = tsf - now; - - data->tsf_offset += delta; - /* adjust after beaconing with new timestamp at old TBTT */ - 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_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_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->rt_rate = 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); -} - - -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 && - memcmp(data->hw->wiphy->perm_addr, skb->data + 4, - ETH_ALEN) == 0) { - data->ps_poll_pending = false; - return true; - } - return false; - } - - return true; -} - - -struct mac80211_hwsim_addr_match_data { - bool ret; - const u8 *addr; -}; - -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; - - if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0) - return true; - - md.ret = false; - md.addr = addr; - ieee80211_iterate_active_interfaces_atomic(data->hw, - IEEE80211_IFACE_ITER_NORMAL, - mac80211_hwsim_addr_iter, - &md); - - return md.ret; -} - -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, - sizeof(struct mac_address), 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; -#if 0 - /* - * Don't enable this code by default as the OUI 00:00:00 - * is registered to Xerox so we shouldn't use it here, it - * might find its way into pcap files. - * Note that this code requires the headroom in the SKB - * that was allocated earlier. - */ - rx_status.vendor_radiotap_oui[0] = 0x00; - rx_status.vendor_radiotap_oui[1] = 0x00; - rx_status.vendor_radiotap_oui[2] = 0x00; - rx_status.vendor_radiotap_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. - */ - rx_status.vendor_radiotap_bitmap = BIT(0); - /* We have 8 bytes of (dummy) data */ - rx_status.vendor_radiotap_len = 8; - /* For testing, also require it to be aligned */ - rx_status.vendor_radiotap_align = 8; - /* push the data */ - memcpy(skb_push(nskb, 8), "ABCDEFGH", 8); -#endif - - 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 */ - dev_kfree_skb(skb); - return; - } - - if (channels == 1) { - 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)) { - dev_kfree_skb(skb); - return; - } - - if (data->idle && !data->tmp_chan) { - wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n"); - dev_kfree_skb(skb); - return; - } - - if (txi->control.vif) - hwsim_check_magic(txi->control.vif); - if (control->sta) - hwsim_check_sta_magic(control->sta); - - if (rctbl) - 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 (rctbl) { - 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 (rctbl) - 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); -} - -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 && channels > 1); - - 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_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)\n", __func__, changed); - - 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); - 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) - 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 hwsim_fops_ps_write(void *dat, u64 val); - -static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw, - 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, 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_PASSIVE_SCAN || - !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 cfg80211_scan_request *req) -{ - 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->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 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 void mac80211_hwsim_free(void) -{ - struct list_head tmplist, *i, *tmp; - struct mac80211_hwsim_data *data, *tmpdata; - - INIT_LIST_HEAD(&tmplist); - - spin_lock_bh(&hwsim_radio_lock); - list_for_each_safe(i, tmp, &hwsim_radios) - list_move(i, &tmplist); - spin_unlock_bh(&hwsim_radio_lock); - - list_for_each_entry_safe(data, tmpdata, &tmplist, list) { - debugfs_remove(data->debugfs_group); - debugfs_remove(data->debugfs_ps); - debugfs_remove(data->debugfs); - ieee80211_unregister_hw(data->hw); - device_release_driver(data->dev); - device_unregister(data->dev); - ieee80211_free_hw(data->hw); - } - class_destroy(hwsim_class); -} - -static struct platform_driver mac80211_hwsim_driver = { - .driver = { - .name = "mac80211_hwsim", - .owner = THIS_MODULE, - }, -}; - -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 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_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 struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr( - struct mac_address *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, - sizeof(struct mac_address)) == 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; - struct mac_address *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_TX_INFO]) - goto out; - - src = (struct mac_address *)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 == NULL) - 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(txi->rate_driver_data[0], - 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; - struct mac_address *dst; - int frame_data_len; - char *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 = (struct mac_address *)nla_data( - info->attrs[HWSIM_ATTR_ADDR_RECEIVER]); - - frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]); - frame_data = (char *)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) { - /* Copy the data */ - memcpy(skb_put(skb, frame_data_len), frame_data, - frame_data_len); - } else - goto err; - - data2 = get_hwsim_data_ref_from_addr(dst); - - if (data2 == NULL) - 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) -{ - if (info == NULL) - goto out; - - 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; -out: - printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__); - return -EINVAL; -} - -/* Generic Netlink operations array */ -static 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, - }, -}; - -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; - - /* userspace test API hasn't been adjusted for multi-channel */ - if (channels > 1) - return 0; - - printk(KERN_INFO "mac80211_hwsim: initializing netlink\n"); - - rc = genl_register_family_with_ops(&hwsim_genl_family, - hwsim_ops, ARRAY_SIZE(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) -{ - int ret; - - /* userspace test API hasn't been adjusted for multi-channel */ - if (channels > 1) - return; - - printk(KERN_INFO "mac80211_hwsim: closing netlink\n"); - /* unregister the notifier */ - netlink_unregister_notifier(&hwsim_netlink_notifier); - /* unregister the family */ - ret = genl_unregister_family(&hwsim_genl_family); - if (ret) - printk(KERN_DEBUG "mac80211_hwsim: " - "unregister family %i\n", ret); -} - -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) }, - { .max = 1, .types = BIT(NL80211_IFTYPE_P2P_DEVICE) }, -}; - -static struct ieee80211_iface_combination hwsim_if_comb = { - .limits = hwsim_if_limits, - .n_limits = ARRAY_SIZE(hwsim_if_limits), - .max_interfaces = 2048, - .num_different_channels = 1, -}; - -static int __init init_mac80211_hwsim(void) -{ - int i, err = 0; - u8 addr[ETH_ALEN]; - struct mac80211_hwsim_data *data; - struct ieee80211_hw *hw; - enum ieee80211_band band; - - if (radios < 1 || radios > 100) - return -EINVAL; - - if (channels < 1) - return -EINVAL; - - if (channels > 1) { - hwsim_if_comb.num_different_channels = channels; - mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan; - mac80211_hwsim_ops.cancel_hw_scan = - mac80211_hwsim_cancel_hw_scan; - mac80211_hwsim_ops.sw_scan_start = NULL; - mac80211_hwsim_ops.sw_scan_complete = NULL; - mac80211_hwsim_ops.remain_on_channel = - mac80211_hwsim_roc; - mac80211_hwsim_ops.cancel_remain_on_channel = - mac80211_hwsim_croc; - mac80211_hwsim_ops.add_chanctx = - mac80211_hwsim_add_chanctx; - mac80211_hwsim_ops.remove_chanctx = - mac80211_hwsim_remove_chanctx; - mac80211_hwsim_ops.change_chanctx = - mac80211_hwsim_change_chanctx; - mac80211_hwsim_ops.assign_vif_chanctx = - mac80211_hwsim_assign_vif_chanctx; - mac80211_hwsim_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 failed_unregister_driver; - } - - memset(addr, 0, ETH_ALEN); - addr[0] = 0x02; - - for (i = 0; i < radios; i++) { - printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n", - i); - hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_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", i); - 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); - addr[3] = i >> 8; - addr[4] = i; - 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; - - hw->wiphy->iface_combinations = &hwsim_if_comb; - hw->wiphy->n_iface_combinations = 1; - - if (channels > 1) { - hw->wiphy->max_scan_ssids = 255; - hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN; - hw->wiphy->max_remain_on_channel_duration = 1000; - } - - INIT_DELAYED_WORK(&data->roc_done, hw_roc_done); - INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work); - - hw->channel_change_time = 1; - 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) | - BIT(NL80211_IFTYPE_P2P_DEVICE); - - hw->flags = IEEE80211_HW_MFP_CAPABLE | - IEEE80211_HW_SIGNAL_DBM | - IEEE80211_HW_SUPPORTS_STATIC_SMPS | - IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS | - IEEE80211_HW_AMPDU_AGGREGATION | - IEEE80211_HW_WANT_MONITOR_VIF | - IEEE80211_HW_QUEUE_CONTROL; - if (rctbl) - hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE; - - hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS | - WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; - - /* 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_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 are belonging 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; - - /* Work to be done prior to ieee80211_register_hw() */ - switch (regtest) { - case HWSIM_REGTEST_DISABLED: - case HWSIM_REGTEST_DRIVER_REG_FOLLOW: - case HWSIM_REGTEST_DRIVER_REG_ALL: - case HWSIM_REGTEST_DIFF_COUNTRY: - /* - * Nothing to be done for driver regulatory domain - * hints prior to ieee80211_register_hw() - */ - break; - case HWSIM_REGTEST_WORLD_ROAM: - if (i == 0) { - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - wiphy_apply_custom_regulatory(hw->wiphy, - &hwsim_world_regdom_custom_01); - } - break; - case HWSIM_REGTEST_CUSTOM_WORLD: - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - wiphy_apply_custom_regulatory(hw->wiphy, - &hwsim_world_regdom_custom_01); - break; - case HWSIM_REGTEST_CUSTOM_WORLD_2: - if (i == 0) { - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - wiphy_apply_custom_regulatory(hw->wiphy, - &hwsim_world_regdom_custom_01); - } else if (i == 1) { - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - wiphy_apply_custom_regulatory(hw->wiphy, - &hwsim_world_regdom_custom_02); - } - break; - case HWSIM_REGTEST_STRICT_ALL: - hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; - break; - case HWSIM_REGTEST_STRICT_FOLLOW: - case HWSIM_REGTEST_STRICT_AND_DRIVER_REG: - if (i == 0) - hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; - break; - case HWSIM_REGTEST_ALL: - if (i == 0) { - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - wiphy_apply_custom_regulatory(hw->wiphy, - &hwsim_world_regdom_custom_01); - } else if (i == 1) { - hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY; - wiphy_apply_custom_regulatory(hw->wiphy, - &hwsim_world_regdom_custom_02); - } else if (i == 4) - hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY; - break; - default: - break; - } - - /* give the regulatory workqueue a chance to run */ - if (regtest) - 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; - } - - /* Work to be done after to ieee80211_register_hw() */ - switch (regtest) { - case HWSIM_REGTEST_WORLD_ROAM: - case HWSIM_REGTEST_DISABLED: - break; - case HWSIM_REGTEST_DRIVER_REG_FOLLOW: - if (!i) - regulatory_hint(hw->wiphy, hwsim_alpha2s[0]); - break; - case HWSIM_REGTEST_DRIVER_REG_ALL: - case HWSIM_REGTEST_STRICT_ALL: - regulatory_hint(hw->wiphy, hwsim_alpha2s[0]); - break; - case HWSIM_REGTEST_DIFF_COUNTRY: - if (i < ARRAY_SIZE(hwsim_alpha2s)) - regulatory_hint(hw->wiphy, hwsim_alpha2s[i]); - break; - case HWSIM_REGTEST_CUSTOM_WORLD: - case HWSIM_REGTEST_CUSTOM_WORLD_2: - /* - * Nothing to be done for custom world regulatory - * domains after to ieee80211_register_hw - */ - break; - case HWSIM_REGTEST_STRICT_FOLLOW: - if (i == 0) - regulatory_hint(hw->wiphy, hwsim_alpha2s[0]); - break; - case HWSIM_REGTEST_STRICT_AND_DRIVER_REG: - if (i == 0) - regulatory_hint(hw->wiphy, hwsim_alpha2s[0]); - else if (i == 1) - regulatory_hint(hw->wiphy, hwsim_alpha2s[1]); - break; - case HWSIM_REGTEST_ALL: - if (i == 2) - regulatory_hint(hw->wiphy, hwsim_alpha2s[0]); - else if (i == 3) - regulatory_hint(hw->wiphy, hwsim_alpha2s[1]); - else if (i == 4) - regulatory_hint(hw->wiphy, hwsim_alpha2s[2]); - break; - default: - break; - } - - wiphy_debug(hw->wiphy, "hwaddr %pm registered\n", - hw->wiphy->perm_addr); - - data->debugfs = debugfs_create_dir("hwsim", - hw->wiphy->debugfsdir); - data->debugfs_ps = debugfs_create_file("ps", 0666, - data->debugfs, data, - &hwsim_fops_ps); - data->debugfs_group = debugfs_create_file("group", 0666, - data->debugfs, data, - &hwsim_fops_group); - - tasklet_hrtimer_init(&data->beacon_timer, - mac80211_hwsim_beacon, - CLOCK_REALTIME, HRTIMER_MODE_ABS); - - list_add_tail(&data->list, &hwsim_radios); - } - - hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup); - if (hwsim_mon == NULL) - goto failed; - - rtnl_lock(); - - err = dev_alloc_name(hwsim_mon, hwsim_mon->name); - if (err < 0) - goto failed_mon; - - - err = register_netdevice(hwsim_mon); - if (err < 0) - goto failed_mon; - - rtnl_unlock(); - - err = hwsim_init_netlink(); - if (err < 0) - goto failed_nl; - - return 0; - -failed_nl: - printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n"); - return err; - -failed_mon: - rtnl_unlock(); - free_netdev(hwsim_mon); - mac80211_hwsim_free(); - return err; - -failed_hw: - device_unregister(data->dev); -failed_drvdata: - ieee80211_free_hw(hw); -failed: - mac80211_hwsim_free(); -failed_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); |