diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-10 05:24:39 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-10 05:24:39 +0400 |
commit | 496322bc91e35007ed754184dcd447a02b6dd685 (patch) | |
tree | f5298d0a74c0a6e65c0e98050b594b8d020904c1 /drivers/net/wireless/ath/ath10k/mac.c | |
parent | 2e17c5a97e231f3cb426f4b7895eab5be5c5442e (diff) | |
parent | 56e0ef527b184b3de2d7f88c6190812b2b2ac6bf (diff) | |
download | linux-496322bc91e35007ed754184dcd447a02b6dd685.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"This is a re-do of the net-next pull request for the current merge
window. The only difference from the one I made the other day is that
this has Eliezer's interface renames and the timeout handling changes
made based upon your feedback, as well as a few bug fixes that have
trickeled in.
Highlights:
1) Low latency device polling, eliminating the cost of interrupt
handling and context switches. Allows direct polling of a network
device from socket operations, such as recvmsg() and poll().
Currently ixgbe, mlx4, and bnx2x support this feature.
Full high level description, performance numbers, and design in
commit 0a4db187a999 ("Merge branch 'll_poll'")
From Eliezer Tamir.
2) With the routing cache removed, ip_check_mc_rcu() gets exercised
more than ever before in the case where we have lots of multicast
addresses. Use a hash table instead of a simple linked list, from
Eric Dumazet.
3) Add driver for Atheros CQA98xx 802.11ac wireless devices, from
Bartosz Markowski, Janusz Dziedzic, Kalle Valo, Marek Kwaczynski,
Marek Puzyniak, Michal Kazior, and Sujith Manoharan.
4) Support reporting the TUN device persist flag to userspace, from
Pavel Emelyanov.
5) Allow controlling network device VF link state using netlink, from
Rony Efraim.
6) Support GRE tunneling in openvswitch, from Pravin B Shelar.
7) Adjust SOCK_MIN_RCVBUF and SOCK_MIN_SNDBUF for modern times, from
Daniel Borkmann and Eric Dumazet.
8) Allow controlling of TCP quickack behavior on a per-route basis,
from Cong Wang.
9) Several bug fixes and improvements to vxlan from Stephen
Hemminger, Pravin B Shelar, and Mike Rapoport. In particular,
support receiving on multiple UDP ports.
10) Major cleanups, particular in the area of debugging and cookie
lifetime handline, to the SCTP protocol code. From Daniel
Borkmann.
11) Allow packets to cross network namespaces when traversing tunnel
devices. From Nicolas Dichtel.
12) Allow monitoring netlink traffic via AF_PACKET sockets, in a
manner akin to how we monitor real network traffic via ptype_all.
From Daniel Borkmann.
13) Several bug fixes and improvements for the new alx device driver,
from Johannes Berg.
14) Fix scalability issues in the netem packet scheduler's time queue,
by using an rbtree. From Eric Dumazet.
15) Several bug fixes in TCP loss recovery handling, from Yuchung
Cheng.
16) Add support for GSO segmentation of MPLS packets, from Simon
Horman.
17) Make network notifiers have a real data type for the opaque
pointer that's passed into them. Use this to properly handle
network device flag changes in arp_netdev_event(). From Jiri
Pirko and Timo Teräs.
18) Convert several drivers over to module_pci_driver(), from Peter
Huewe.
19) tcp_fixup_rcvbuf() can loop 500 times over loopback, just use a
O(1) calculation instead. From Eric Dumazet.
20) Support setting of explicit tunnel peer addresses in ipv6, just
like ipv4. From Nicolas Dichtel.
21) Protect x86 BPF JIT against spraying attacks, from Eric Dumazet.
22) Prevent a single high rate flow from overruning an individual cpu
during RX packet processing via selective flow shedding. From
Willem de Bruijn.
23) Don't use spinlocks in TCP md5 signing fast paths, from Eric
Dumazet.
24) Don't just drop GSO packets which are above the TBF scheduler's
burst limit, chop them up so they are in-bounds instead. Also
from Eric Dumazet.
25) VLAN offloads are missed when configured on top of a bridge, fix
from Vlad Yasevich.
26) Support IPV6 in ping sockets. From Lorenzo Colitti.
27) Receive flow steering targets should be updated at poll() time
too, from David Majnemer.
28) Fix several corner case regressions in PMTU/redirect handling due
to the routing cache removal, from Timo Teräs.
29) We have to be mindful of ipv4 mapped ipv6 sockets in
upd_v6_push_pending_frames(). From Hannes Frederic Sowa.
30) Fix L2TP sequence number handling bugs, from James Chapman."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1214 commits)
drivers/net: caif: fix wrong rtnl_is_locked() usage
drivers/net: enic: release rtnl_lock on error-path
vhost-net: fix use-after-free in vhost_net_flush
net: mv643xx_eth: do not use port number as platform device id
net: sctp: confirm route during forward progress
virtio_net: fix race in RX VQ processing
virtio: support unlocked queue poll
net/cadence/macb: fix bug/typo in extracting gem_irq_read_clear bit
Documentation: Fix references to defunct linux-net@vger.kernel.org
net/fs: change busy poll time accounting
net: rename low latency sockets functions to busy poll
bridge: fix some kernel warning in multicast timer
sfc: Fix memory leak when discarding scattered packets
sit: fix tunnel update via netlink
dt:net:stmmac: Add dt specific phy reset callback support.
dt:net:stmmac: Add support to dwmac version 3.610 and 3.710
dt:net:stmmac: Allocate platform data only if its NULL.
net:stmmac: fix memleak in the open method
ipv6: rt6_check_neigh should successfully verify neigh if no NUD information are available
net: ipv6: fix wrong ping_v6_sendmsg return value
...
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/mac.c')
-rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.c | 3069 |
1 files changed, 3069 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c new file mode 100644 index 000000000000..da5c333d0d4b --- /dev/null +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -0,0 +1,3069 @@ +/* + * Copyright (c) 2005-2011 Atheros Communications Inc. + * Copyright (c) 2011-2013 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "mac.h" + +#include <net/mac80211.h> +#include <linux/etherdevice.h> + +#include "core.h" +#include "debug.h" +#include "wmi.h" +#include "htt.h" +#include "txrx.h" + +/**********/ +/* Crypto */ +/**********/ + +static int ath10k_send_key(struct ath10k_vif *arvif, + struct ieee80211_key_conf *key, + enum set_key_cmd cmd, + const u8 *macaddr) +{ + struct wmi_vdev_install_key_arg arg = { + .vdev_id = arvif->vdev_id, + .key_idx = key->keyidx, + .key_len = key->keylen, + .key_data = key->key, + .macaddr = macaddr, + }; + + if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) + arg.key_flags = WMI_KEY_PAIRWISE; + else + arg.key_flags = WMI_KEY_GROUP; + + switch (key->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + arg.key_cipher = WMI_CIPHER_AES_CCM; + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + break; + case WLAN_CIPHER_SUITE_TKIP: + arg.key_cipher = WMI_CIPHER_TKIP; + arg.key_txmic_len = 8; + arg.key_rxmic_len = 8; + break; + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + arg.key_cipher = WMI_CIPHER_WEP; + /* AP/IBSS mode requires self-key to be groupwise + * Otherwise pairwise key must be set */ + if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN)) + arg.key_flags = WMI_KEY_PAIRWISE; + break; + default: + ath10k_warn("cipher %d is not supported\n", key->cipher); + return -EOPNOTSUPP; + } + + if (cmd == DISABLE_KEY) { + arg.key_cipher = WMI_CIPHER_NONE; + arg.key_data = NULL; + } + + return ath10k_wmi_vdev_install_key(arvif->ar, &arg); +} + +static int ath10k_install_key(struct ath10k_vif *arvif, + struct ieee80211_key_conf *key, + enum set_key_cmd cmd, + const u8 *macaddr) +{ + struct ath10k *ar = arvif->ar; + int ret; + + INIT_COMPLETION(ar->install_key_done); + + ret = ath10k_send_key(arvif, key, cmd, macaddr); + if (ret) + return ret; + + ret = wait_for_completion_timeout(&ar->install_key_done, 3*HZ); + if (ret == 0) + return -ETIMEDOUT; + + return 0; +} + +static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif, + const u8 *addr) +{ + struct ath10k *ar = arvif->ar; + struct ath10k_peer *peer; + int ret; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, addr); + spin_unlock_bh(&ar->data_lock); + + if (!peer) + return -ENOENT; + + for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) { + if (arvif->wep_keys[i] == NULL) + continue; + + ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY, + addr); + if (ret) + return ret; + + peer->keys[i] = arvif->wep_keys[i]; + } + + return 0; +} + +static int ath10k_clear_peer_keys(struct ath10k_vif *arvif, + const u8 *addr) +{ + struct ath10k *ar = arvif->ar; + struct ath10k_peer *peer; + int first_errno = 0; + int ret; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, addr); + spin_unlock_bh(&ar->data_lock); + + if (!peer) + return -ENOENT; + + for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { + if (peer->keys[i] == NULL) + continue; + + ret = ath10k_install_key(arvif, peer->keys[i], + DISABLE_KEY, addr); + if (ret && first_errno == 0) + first_errno = ret; + + if (ret) + ath10k_warn("could not remove peer wep key %d (%d)\n", + i, ret); + + peer->keys[i] = NULL; + } + + return first_errno; +} + +static int ath10k_clear_vdev_key(struct ath10k_vif *arvif, + struct ieee80211_key_conf *key) +{ + struct ath10k *ar = arvif->ar; + struct ath10k_peer *peer; + u8 addr[ETH_ALEN]; + int first_errno = 0; + int ret; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + for (;;) { + /* since ath10k_install_key we can't hold data_lock all the + * time, so we try to remove the keys incrementally */ + spin_lock_bh(&ar->data_lock); + i = 0; + list_for_each_entry(peer, &ar->peers, list) { + for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { + if (peer->keys[i] == key) { + memcpy(addr, peer->addr, ETH_ALEN); + peer->keys[i] = NULL; + break; + } + } + + if (i < ARRAY_SIZE(peer->keys)) + break; + } + spin_unlock_bh(&ar->data_lock); + + if (i == ARRAY_SIZE(peer->keys)) + break; + + ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr); + if (ret && first_errno == 0) + first_errno = ret; + + if (ret) + ath10k_warn("could not remove key for %pM\n", addr); + } + + return first_errno; +} + + +/*********************/ +/* General utilities */ +/*********************/ + +static inline enum wmi_phy_mode +chan_to_phymode(const struct cfg80211_chan_def *chandef) +{ + enum wmi_phy_mode phymode = MODE_UNKNOWN; + + switch (chandef->chan->band) { + case IEEE80211_BAND_2GHZ: + switch (chandef->width) { + case NL80211_CHAN_WIDTH_20_NOHT: + phymode = MODE_11G; + break; + case NL80211_CHAN_WIDTH_20: + phymode = MODE_11NG_HT20; + break; + case NL80211_CHAN_WIDTH_40: + phymode = MODE_11NG_HT40; + break; + case NL80211_CHAN_WIDTH_5: + case NL80211_CHAN_WIDTH_10: + case NL80211_CHAN_WIDTH_80: + case NL80211_CHAN_WIDTH_80P80: + case NL80211_CHAN_WIDTH_160: + phymode = MODE_UNKNOWN; + break; + } + break; + case IEEE80211_BAND_5GHZ: + switch (chandef->width) { + case NL80211_CHAN_WIDTH_20_NOHT: + phymode = MODE_11A; + break; + case NL80211_CHAN_WIDTH_20: + phymode = MODE_11NA_HT20; + break; + case NL80211_CHAN_WIDTH_40: + phymode = MODE_11NA_HT40; + break; + case NL80211_CHAN_WIDTH_80: + phymode = MODE_11AC_VHT80; + break; + case NL80211_CHAN_WIDTH_5: + case NL80211_CHAN_WIDTH_10: + case NL80211_CHAN_WIDTH_80P80: + case NL80211_CHAN_WIDTH_160: + phymode = MODE_UNKNOWN; + break; + } + break; + default: + break; + } + + WARN_ON(phymode == MODE_UNKNOWN); + return phymode; +} + +static u8 ath10k_parse_mpdudensity(u8 mpdudensity) +{ +/* + * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": + * 0 for no restriction + * 1 for 1/4 us + * 2 for 1/2 us + * 3 for 1 us + * 4 for 2 us + * 5 for 4 us + * 6 for 8 us + * 7 for 16 us + */ + switch (mpdudensity) { + case 0: + return 0; + case 1: + case 2: + case 3: + /* Our lower layer calculations limit our precision to + 1 microsecond */ + return 1; + case 4: + return 2; + case 5: + return 4; + case 6: + return 8; + case 7: + return 16; + default: + return 0; + } +} + +static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr) +{ + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + ret = ath10k_wmi_peer_create(ar, vdev_id, addr); + if (ret) + return ret; + + ret = ath10k_wait_for_peer_created(ar, vdev_id, addr); + if (ret) + return ret; + + return 0; +} + +static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr) +{ + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + ret = ath10k_wmi_peer_delete(ar, vdev_id, addr); + if (ret) + return ret; + + ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr); + if (ret) + return ret; + + return 0; +} + +static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id) +{ + struct ath10k_peer *peer, *tmp; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + list_for_each_entry_safe(peer, tmp, &ar->peers, list) { + if (peer->vdev_id != vdev_id) + continue; + + ath10k_warn("removing stale peer %pM from vdev_id %d\n", + peer->addr, vdev_id); + + list_del(&peer->list); + kfree(peer); + } + spin_unlock_bh(&ar->data_lock); +} + +/************************/ +/* Interface management */ +/************************/ + +static inline int ath10k_vdev_setup_sync(struct ath10k *ar) +{ + int ret; + + ret = wait_for_completion_timeout(&ar->vdev_setup_done, + ATH10K_VDEV_SETUP_TIMEOUT_HZ); + if (ret == 0) + return -ETIMEDOUT; + + return 0; +} + +static int ath10k_vdev_start(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + struct ieee80211_conf *conf = &ar->hw->conf; + struct ieee80211_channel *channel = conf->chandef.chan; + struct wmi_vdev_start_request_arg arg = {}; + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + INIT_COMPLETION(ar->vdev_setup_done); + + arg.vdev_id = arvif->vdev_id; + arg.dtim_period = arvif->dtim_period; + arg.bcn_intval = arvif->beacon_interval; + + arg.channel.freq = channel->center_freq; + + arg.channel.band_center_freq1 = conf->chandef.center_freq1; + + arg.channel.mode = chan_to_phymode(&conf->chandef); + + arg.channel.min_power = channel->max_power * 3; + arg.channel.max_power = channel->max_power * 4; + arg.channel.max_reg_power = channel->max_reg_power * 4; + arg.channel.max_antenna_gain = channel->max_antenna_gain; + + if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + arg.ssid = arvif->u.ap.ssid; + arg.ssid_len = arvif->u.ap.ssid_len; + arg.hidden_ssid = arvif->u.ap.hidden_ssid; + } else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) { + arg.ssid = arvif->vif->bss_conf.ssid; + arg.ssid_len = arvif->vif->bss_conf.ssid_len; + } + + ret = ath10k_wmi_vdev_start(ar, &arg); + if (ret) { + ath10k_warn("WMI vdev start failed: ret %d\n", ret); + return ret; + } + + ret = ath10k_vdev_setup_sync(ar); + if (ret) { + ath10k_warn("vdev setup failed %d\n", ret); + return ret; + } + + return ret; +} + +static int ath10k_vdev_stop(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + INIT_COMPLETION(ar->vdev_setup_done); + + ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id); + if (ret) { + ath10k_warn("WMI vdev stop failed: ret %d\n", ret); + return ret; + } + + ret = ath10k_vdev_setup_sync(ar); + if (ret) { + ath10k_warn("vdev setup failed %d\n", ret); + return ret; + } + + return ret; +} + +static int ath10k_monitor_start(struct ath10k *ar, int vdev_id) +{ + struct ieee80211_channel *channel = ar->hw->conf.chandef.chan; + struct wmi_vdev_start_request_arg arg = {}; + enum nl80211_channel_type type; + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + type = cfg80211_get_chandef_type(&ar->hw->conf.chandef); + + arg.vdev_id = vdev_id; + arg.channel.freq = channel->center_freq; + arg.channel.band_center_freq1 = ar->hw->conf.chandef.center_freq1; + + /* TODO setup this dynamically, what in case we + don't have any vifs? */ + arg.channel.mode = chan_to_phymode(&ar->hw->conf.chandef); + + arg.channel.min_power = channel->max_power * 3; + arg.channel.max_power = channel->max_power * 4; + arg.channel.max_reg_power = channel->max_reg_power * 4; + arg.channel.max_antenna_gain = channel->max_antenna_gain; + + ret = ath10k_wmi_vdev_start(ar, &arg); + if (ret) { + ath10k_warn("Monitor vdev start failed: ret %d\n", ret); + return ret; + } + + ret = ath10k_vdev_setup_sync(ar); + if (ret) { + ath10k_warn("Monitor vdev setup failed %d\n", ret); + return ret; + } + + ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr); + if (ret) { + ath10k_warn("Monitor vdev up failed: %d\n", ret); + goto vdev_stop; + } + + ar->monitor_vdev_id = vdev_id; + ar->monitor_enabled = true; + + return 0; + +vdev_stop: + ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id); + if (ret) + ath10k_warn("Monitor vdev stop failed: %d\n", ret); + + return ret; +} + +static int ath10k_monitor_stop(struct ath10k *ar) +{ + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + /* For some reasons, ath10k_wmi_vdev_down() here couse + * often ath10k_wmi_vdev_stop() to fail. Next we could + * not run monitor vdev and driver reload + * required. Don't see such problems we skip + * ath10k_wmi_vdev_down() here. + */ + + ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id); + if (ret) + ath10k_warn("Monitor vdev stop failed: %d\n", ret); + + ret = ath10k_vdev_setup_sync(ar); + if (ret) + ath10k_warn("Monitor_down sync failed: %d\n", ret); + + ar->monitor_enabled = false; + return ret; +} + +static int ath10k_monitor_create(struct ath10k *ar) +{ + int bit, ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + if (ar->monitor_present) { + ath10k_warn("Monitor mode already enabled\n"); + return 0; + } + + bit = ffs(ar->free_vdev_map); + if (bit == 0) { + ath10k_warn("No free VDEV slots\n"); + return -ENOMEM; + } + + ar->monitor_vdev_id = bit - 1; + ar->free_vdev_map &= ~(1 << ar->monitor_vdev_id); + + ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id, + WMI_VDEV_TYPE_MONITOR, + 0, ar->mac_addr); + if (ret) { + ath10k_warn("WMI vdev monitor create failed: ret %d\n", ret); + goto vdev_fail; + } + + ath10k_dbg(ATH10K_DBG_MAC, "Monitor interface created, vdev id: %d\n", + ar->monitor_vdev_id); + + ar->monitor_present = true; + return 0; + +vdev_fail: + /* + * Restore the ID to the global map. + */ + ar->free_vdev_map |= 1 << (ar->monitor_vdev_id); + return ret; +} + +static int ath10k_monitor_destroy(struct ath10k *ar) +{ + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + if (!ar->monitor_present) + return 0; + + ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id); + if (ret) { + ath10k_warn("WMI vdev monitor delete failed: %d\n", ret); + return ret; + } + + ar->free_vdev_map |= 1 << (ar->monitor_vdev_id); + ar->monitor_present = false; + + ath10k_dbg(ATH10K_DBG_MAC, "Monitor interface destroyed, vdev id: %d\n", + ar->monitor_vdev_id); + return ret; +} + +static void ath10k_control_beaconing(struct ath10k_vif *arvif, + struct ieee80211_bss_conf *info) +{ + int ret = 0; + + if (!info->enable_beacon) { + ath10k_vdev_stop(arvif); + return; + } + + arvif->tx_seq_no = 0x1000; + + ret = ath10k_vdev_start(arvif); + if (ret) + return; + + ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, 0, info->bssid); + if (ret) { + ath10k_warn("Failed to bring up VDEV: %d\n", + arvif->vdev_id); + return; + } + ath10k_dbg(ATH10K_DBG_MAC, "VDEV: %d up\n", arvif->vdev_id); +} + +static void ath10k_control_ibss(struct ath10k_vif *arvif, + struct ieee80211_bss_conf *info, + const u8 self_peer[ETH_ALEN]) +{ + int ret = 0; + + if (!info->ibss_joined) { + ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer); + if (ret) + ath10k_warn("Failed to delete IBSS self peer:%pM for VDEV:%d ret:%d\n", + self_peer, arvif->vdev_id, ret); + + if (is_zero_ether_addr(arvif->u.ibss.bssid)) + return; + + ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, + arvif->u.ibss.bssid); + if (ret) { + ath10k_warn("Failed to delete IBSS BSSID peer:%pM for VDEV:%d ret:%d\n", + arvif->u.ibss.bssid, arvif->vdev_id, ret); + return; + } + + memset(arvif->u.ibss.bssid, 0, ETH_ALEN); + + return; + } + + ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer); + if (ret) { + ath10k_warn("Failed to create IBSS self peer:%pM for VDEV:%d ret:%d\n", + self_peer, arvif->vdev_id, ret); + return; + } + + ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, + WMI_VDEV_PARAM_ATIM_WINDOW, + ATH10K_DEFAULT_ATIM); + if (ret) + ath10k_warn("Failed to set IBSS ATIM for VDEV:%d ret:%d\n", + arvif->vdev_id, ret); +} + +/* + * Review this when mac80211 gains per-interface powersave support. + */ +static void ath10k_ps_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath10k_generic_iter *ar_iter = data; + struct ieee80211_conf *conf = &ar_iter->ar->hw->conf; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + enum wmi_sta_powersave_param param; + enum wmi_sta_ps_mode psmode; + int ret; + + if (vif->type != NL80211_IFTYPE_STATION) + return; + + if (conf->flags & IEEE80211_CONF_PS) { + psmode = WMI_STA_PS_MODE_ENABLED; + param = WMI_STA_PS_PARAM_INACTIVITY_TIME; + + ret = ath10k_wmi_set_sta_ps_param(ar_iter->ar, + arvif->vdev_id, + param, + conf->dynamic_ps_timeout); + if (ret) { + ath10k_warn("Failed to set inactivity time for VDEV: %d\n", + arvif->vdev_id); + return; + } + + ar_iter->ret = ret; + } else { + psmode = WMI_STA_PS_MODE_DISABLED; + } + + ar_iter->ret = ath10k_wmi_set_psmode(ar_iter->ar, arvif->vdev_id, + psmode); + if (ar_iter->ret) + ath10k_warn("Failed to set PS Mode: %d for VDEV: %d\n", + psmode, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, "Set PS Mode: %d for VDEV: %d\n", + psmode, arvif->vdev_id); +} + +/**********************/ +/* Station management */ +/**********************/ + +static void ath10k_peer_assoc_h_basic(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + memcpy(arg->addr, sta->addr, ETH_ALEN); + arg->vdev_id = arvif->vdev_id; + arg->peer_aid = sta->aid; + arg->peer_flags |= WMI_PEER_AUTH; + + if (arvif->vdev_type == WMI_VDEV_TYPE_STA) + /* + * Seems FW have problems with Power Save in STA + * mode when we setup this parameter to high (eg. 5). + * Often we see that FW don't send NULL (with clean P flags) + * frame even there is info about buffered frames in beacons. + * Sometimes we have to wait more than 10 seconds before FW + * will wakeup. Often sending one ping from AP to our device + * just fail (more than 50%). + * + * Seems setting this FW parameter to 1 couse FW + * will check every beacon and will wakup immediately + * after detection buffered data. + */ + arg->peer_listen_intval = 1; + else + arg->peer_listen_intval = ar->hw->conf.listen_interval; + + arg->peer_num_spatial_streams = 1; + + /* + * The assoc capabilities are available only in managed mode. + */ + if (arvif->vdev_type == WMI_VDEV_TYPE_STA && bss_conf) + arg->peer_caps = bss_conf->assoc_capability; +} + +static void ath10k_peer_assoc_h_crypto(struct ath10k *ar, + struct ath10k_vif *arvif, + struct wmi_peer_assoc_complete_arg *arg) +{ + struct ieee80211_vif *vif = arvif->vif; + struct ieee80211_bss_conf *info = &vif->bss_conf; + struct cfg80211_bss *bss; + const u8 *rsnie = NULL; + const u8 *wpaie = NULL; + + bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan, + info->bssid, NULL, 0, 0, 0); + if (bss) { + const struct cfg80211_bss_ies *ies; + + rcu_read_lock(); + rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN); + + ies = rcu_dereference(bss->ies); + + wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT, + WLAN_OUI_TYPE_MICROSOFT_WPA, + ies->data, + ies->len); + rcu_read_unlock(); + cfg80211_put_bss(ar->hw->wiphy, bss); + } + + /* FIXME: base on RSN IE/WPA IE is a correct idea? */ + if (rsnie || wpaie) { + ath10k_dbg(ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__); + arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY; + } + + if (wpaie) { + ath10k_dbg(ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__); + arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY; + } +} + +static void ath10k_peer_assoc_h_rates(struct ath10k *ar, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates; + const struct ieee80211_supported_band *sband; + const struct ieee80211_rate *rates; + u32 ratemask; + int i; + + sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band]; + ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band]; + rates = sband->bitrates; + + rateset->num_rates = 0; + + for (i = 0; i < 32; i++, ratemask >>= 1, rates++) { + if (!(ratemask & 1)) + continue; + + rateset->rates[rateset->num_rates] = rates->hw_value; + rateset->num_rates++; + } +} + +static void ath10k_peer_assoc_h_ht(struct ath10k *ar, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + int smps; + int i, n; + + if (!ht_cap->ht_supported) + return; + + arg->peer_flags |= WMI_PEER_HT; + arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + + ht_cap->ampdu_factor)) - 1; + + arg->peer_mpdu_density = + ath10k_parse_mpdudensity(ht_cap->ampdu_density); + + arg->peer_ht_caps = ht_cap->cap; + arg->peer_rate_caps |= WMI_RC_HT_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) + arg->peer_flags |= WMI_PEER_LDPC; + + if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) { + arg->peer_flags |= WMI_PEER_40MHZ; + arg->peer_rate_caps |= WMI_RC_CW40_FLAG; + } + + if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20) + arg->peer_rate_caps |= WMI_RC_SGI_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40) + arg->peer_rate_caps |= WMI_RC_SGI_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) { + arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG; + arg->peer_flags |= WMI_PEER_STBC; + } + + if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) { + u32 stbc; + stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC; + stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT; + stbc = stbc << WMI_RC_RX_STBC_FLAG_S; + arg->peer_rate_caps |= stbc; + arg->peer_flags |= WMI_PEER_STBC; + } + + smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS; + smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT; + + if (smps == WLAN_HT_CAP_SM_PS_STATIC) { + arg->peer_flags |= WMI_PEER_SPATIAL_MUX; + arg->peer_flags |= WMI_PEER_STATIC_MIMOPS; + } else if (smps == WLAN_HT_CAP_SM_PS_DYNAMIC) { + arg->peer_flags |= WMI_PEER_SPATIAL_MUX; + arg->peer_flags |= WMI_PEER_DYN_MIMOPS; + } + + if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2]) + arg->peer_rate_caps |= WMI_RC_TS_FLAG; + else if (ht_cap->mcs.rx_mask[1]) + arg->peer_rate_caps |= WMI_RC_DS_FLAG; + + for (i = 0, n = 0; i < IEEE80211_HT_MCS_MASK_LEN*8; i++) + if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8)) + arg->peer_ht_rates.rates[n++] = i; + + arg->peer_ht_rates.num_rates = n; + arg->peer_num_spatial_streams = max((n+7) / 8, 1); + + ath10k_dbg(ATH10K_DBG_MAC, "mcs cnt %d nss %d\n", + arg->peer_ht_rates.num_rates, + arg->peer_num_spatial_streams); +} + +static void ath10k_peer_assoc_h_qos_ap(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + u32 uapsd = 0; + u32 max_sp = 0; + + if (sta->wme) + arg->peer_flags |= WMI_PEER_QOS; + + if (sta->wme && sta->uapsd_queues) { + ath10k_dbg(ATH10K_DBG_MAC, "uapsd_queues: 0x%X, max_sp: %d\n", + sta->uapsd_queues, sta->max_sp); + + arg->peer_flags |= WMI_PEER_APSD; + arg->peer_flags |= WMI_RC_UAPSD_FLAG; + + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC3_TRIGGER_EN; + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) + uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC2_TRIGGER_EN; + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) + uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC1_TRIGGER_EN; + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) + uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC0_TRIGGER_EN; + + + if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP) + max_sp = sta->max_sp; + + ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, + sta->addr, + WMI_AP_PS_PEER_PARAM_UAPSD, + uapsd); + + ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, + sta->addr, + WMI_AP_PS_PEER_PARAM_MAX_SP, + max_sp); + + /* TODO setup this based on STA listen interval and + beacon interval. Currently we don't know + sta->listen_interval - mac80211 patch required. + Currently use 10 seconds */ + ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, + sta->addr, + WMI_AP_PS_PEER_PARAM_AGEOUT_TIME, + 10); + } +} + +static void ath10k_peer_assoc_h_qos_sta(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + if (bss_conf->qos) + arg->peer_flags |= WMI_PEER_QOS; +} + +static void ath10k_peer_assoc_h_vht(struct ath10k *ar, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; + + if (!vht_cap->vht_supported) + return; + + arg->peer_flags |= WMI_PEER_VHT; + + arg->peer_vht_caps = vht_cap->cap; + + if (sta->bandwidth == IEEE80211_STA_RX_BW_80) + arg->peer_flags |= WMI_PEER_80MHZ; + + arg->peer_vht_rates.rx_max_rate = + __le16_to_cpu(vht_cap->vht_mcs.rx_highest); + arg->peer_vht_rates.rx_mcs_set = + __le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); + arg->peer_vht_rates.tx_max_rate = + __le16_to_cpu(vht_cap->vht_mcs.tx_highest); + arg->peer_vht_rates.tx_mcs_set = + __le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map); + + ath10k_dbg(ATH10K_DBG_MAC, "mac vht peer\n"); +} + +static void ath10k_peer_assoc_h_qos(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + switch (arvif->vdev_type) { + case WMI_VDEV_TYPE_AP: + ath10k_peer_assoc_h_qos_ap(ar, arvif, sta, bss_conf, arg); + break; + case WMI_VDEV_TYPE_STA: + ath10k_peer_assoc_h_qos_sta(ar, arvif, sta, bss_conf, arg); + break; + default: + break; + } +} + +static void ath10k_peer_assoc_h_phymode(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + enum wmi_phy_mode phymode = MODE_UNKNOWN; + + /* FIXME: add VHT */ + + switch (ar->hw->conf.chandef.chan->band) { + case IEEE80211_BAND_2GHZ: + if (sta->ht_cap.ht_supported) { + if (sta->bandwidth == IEEE80211_STA_RX_BW_40) + phymode = MODE_11NG_HT40; + else + phymode = MODE_11NG_HT20; + } else { + phymode = MODE_11G; + } + + break; + case IEEE80211_BAND_5GHZ: + if (sta->ht_cap.ht_supported) { + if (sta->bandwidth == IEEE80211_STA_RX_BW_40) + phymode = MODE_11NA_HT40; + else + phymode = MODE_11NA_HT20; + } else { + phymode = MODE_11A; + } + + break; + default: + break; + } + + arg->peer_phymode = phymode; + WARN_ON(phymode == MODE_UNKNOWN); +} + +static int ath10k_peer_assoc(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf) +{ + struct wmi_peer_assoc_complete_arg arg; + + memset(&arg, 0, sizeof(struct wmi_peer_assoc_complete_arg)); + + ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, &arg); + ath10k_peer_assoc_h_crypto(ar, arvif, &arg); + ath10k_peer_assoc_h_rates(ar, sta, &arg); + ath10k_peer_assoc_h_ht(ar, sta, &arg); + ath10k_peer_assoc_h_vht(ar, sta, &arg); + ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, &arg); + ath10k_peer_assoc_h_phymode(ar, arvif, sta, &arg); + + return ath10k_wmi_peer_assoc(ar, &arg); +} + +/* can be called only in mac80211 callbacks due to `key_count` usage */ +static void ath10k_bss_assoc(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct ieee80211_sta *ap_sta; + int ret; + + rcu_read_lock(); + + ap_sta = ieee80211_find_sta(vif, bss_conf->bssid); + if (!ap_sta) { + ath10k_warn("Failed to find station entry for %pM\n", + bss_conf->bssid); + rcu_read_unlock(); + return; + } + + ret = ath10k_peer_assoc(ar, arvif, ap_sta, bss_conf); + if (ret) { + ath10k_warn("Peer assoc failed for %pM\n", bss_conf->bssid); + rcu_read_unlock(); + return; + } + + rcu_read_unlock(); + + ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, bss_conf->aid, + bss_conf->bssid); + if (ret) + ath10k_warn("VDEV: %d up failed: ret %d\n", + arvif->vdev_id, ret); + else + ath10k_dbg(ATH10K_DBG_MAC, + "VDEV: %d associated, BSSID: %pM, AID: %d\n", + arvif->vdev_id, bss_conf->bssid, bss_conf->aid); +} + +/* + * FIXME: flush TIDs + */ +static void ath10k_bss_disassoc(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret; + + /* + * For some reason, calling VDEV-DOWN before VDEV-STOP + * makes the FW to send frames via HTT after disassociation. + * No idea why this happens, even though VDEV-DOWN is supposed + * to be analogous to link down, so just stop the VDEV. + */ + ret = ath10k_vdev_stop(arvif); + if (!ret) + ath10k_dbg(ATH10K_DBG_MAC, "VDEV: %d stopped\n", + arvif->vdev_id); + + /* + * If we don't call VDEV-DOWN after VDEV-STOP FW will remain active and + * report beacons from previously associated network through HTT. + * This in turn would spam mac80211 WARN_ON if we bring down all + * interfaces as it expects there is no rx when no interface is + * running. + */ + ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) + ath10k_dbg(ATH10K_DBG_MAC, "VDEV: %d ath10k_wmi_vdev_down failed (%d)\n", + arvif->vdev_id, ret); + + ath10k_wmi_flush_tx(ar); + + arvif->def_wep_key_index = 0; +} + +static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif, + struct ieee80211_sta *sta) +{ + int ret = 0; + + ret = ath10k_peer_assoc(ar, arvif, sta, NULL); + if (ret) { + ath10k_warn("WMI peer assoc failed for %pM\n", sta->addr); + return ret; + } + + ret = ath10k_install_peer_wep_keys(arvif, sta->addr); + if (ret) { + ath10k_warn("could not install peer wep keys (%d)\n", ret); + return ret; + } + + return ret; +} + +static int ath10k_station_disassoc(struct ath10k *ar, struct ath10k_vif *arvif, + struct ieee80211_sta *sta) +{ + int ret = 0; + + ret = ath10k_clear_peer_keys(arvif, sta->addr); + if (ret) { + ath10k_warn("could not clear all peer wep keys (%d)\n", ret); + return ret; + } + + return ret; +} + +/**************/ +/* Regulatory */ +/**************/ + +static int ath10k_update_channel_list(struct ath10k *ar) +{ + struct ieee80211_hw *hw = ar->hw; + struct ieee80211_supported_band **bands; + enum ieee80211_band band; + struct ieee80211_channel *channel; + struct wmi_scan_chan_list_arg arg = {0}; + struct wmi_channel_arg *ch; + bool passive; + int len; + int ret; + int i; + + bands = hw->wiphy->bands; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!bands[band]) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + if (bands[band]->channels[i].flags & + IEEE80211_CHAN_DISABLED) + continue; + + arg.n_channels++; + } + } + + len = sizeof(struct wmi_channel_arg) * arg.n_channels; + arg.channels = kzalloc(len, GFP_KERNEL); + if (!arg.channels) + return -ENOMEM; + + ch = arg.channels; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!bands[band]) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + channel = &bands[band]->channels[i]; + + if (channel->flags & IEEE80211_CHAN_DISABLED) + continue; + + ch->allow_ht = true; + + /* FIXME: when should we really allow VHT? */ + ch->allow_vht = true; + + ch->allow_ibss = + !(channel->flags & IEEE80211_CHAN_NO_IBSS); + + ch->ht40plus = + !(channel->flags & IEEE80211_CHAN_NO_HT40PLUS); + + passive = channel->flags & IEEE80211_CHAN_PASSIVE_SCAN; + ch->passive = passive; + + ch->freq = channel->center_freq; + ch->min_power = channel->max_power * 3; + ch->max_power = channel->max_power * 4; + ch->max_reg_power = channel->max_reg_power * 4; + ch->max_antenna_gain = channel->max_antenna_gain; + ch->reg_class_id = 0; /* FIXME */ + + /* FIXME: why use only legacy modes, why not any + * HT/VHT modes? Would that even make any + * difference? */ + if (channel->band == IEEE80211_BAND_2GHZ) + ch->mode = MODE_11G; + else + ch->mode = MODE_11A; + + if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN)) + continue; + + ath10k_dbg(ATH10K_DBG_WMI, + "%s: [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", + __func__, ch - arg.channels, arg.n_channels, + ch->freq, ch->max_power, ch->max_reg_power, + ch->max_antenna_gain, ch->mode); + + ch++; + } + } + + ret = ath10k_wmi_scan_chan_list(ar, &arg); + kfree(arg.channels); + + return ret; +} + +static void ath10k_reg_notifier(struct wiphy *wiphy, + struct regulatory_request *request) +{ + struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); + struct reg_dmn_pair_mapping *regpair; + struct ath10k *ar = hw->priv; + int ret; + + ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory); + + ret = ath10k_update_channel_list(ar); + if (ret) + ath10k_warn("could not update channel list (%d)\n", ret); + + regpair = ar->ath_common.regulatory.regpair; + /* Target allows setting up per-band regdomain but ath_common provides + * a combined one only */ + ret = ath10k_wmi_pdev_set_regdomain(ar, + regpair->regDmnEnum, + regpair->regDmnEnum, /* 2ghz */ + regpair->regDmnEnum, /* 5ghz */ + regpair->reg_2ghz_ctl, + regpair->reg_5ghz_ctl); + if (ret) + ath10k_warn("could not set pdev regdomain (%d)\n", ret); +} + +/***************/ +/* TX handlers */ +/***************/ + +/* + * Frames sent to the FW have to be in "Native Wifi" format. + * Strip the QoS field from the 802.11 header. + */ +static void ath10k_tx_h_qos_workaround(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (void *)skb->data; + u8 *qos_ctl; + + if (!ieee80211_is_data_qos(hdr->frame_control)) + return; + + qos_ctl = ieee80211_get_qos_ctl(hdr); + memmove(qos_ctl, qos_ctl + IEEE80211_QOS_CTL_LEN, + skb->len - ieee80211_hdrlen(hdr->frame_control)); + skb_trim(skb, skb->len - IEEE80211_QOS_CTL_LEN); +} + +static void ath10k_tx_h_update_wep_key(struct sk_buff *skb) +{ + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_vif *vif = info->control.vif; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct ath10k *ar = arvif->ar; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_key_conf *key = info->control.hw_key; + int ret; + + /* TODO AP mode should be implemented */ + if (vif->type != NL80211_IFTYPE_STATION) + return; + + if (!ieee80211_has_protected(hdr->frame_control)) + return; + + if (!key) + return; + + if (key->cipher != WLAN_CIPHER_SUITE_WEP40 && + key->cipher != WLAN_CIPHER_SUITE_WEP104) + return; + + if (key->keyidx == arvif->def_wep_key_index) + return; + + ath10k_dbg(ATH10K_DBG_MAC, "new wep keyidx will be %d\n", key->keyidx); + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_DEF_KEYID, + key->keyidx); + if (ret) { + ath10k_warn("could not update wep keyidx (%d)\n", ret); + return; + } + + arvif->def_wep_key_index = key->keyidx; +} + +static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar, struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_vif *vif = info->control.vif; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + + /* This is case only for P2P_GO */ + if (arvif->vdev_type != WMI_VDEV_TYPE_AP || + arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO) + return; + + if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) { + spin_lock_bh(&ar->data_lock); + if (arvif->u.ap.noa_data) + if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len, + GFP_ATOMIC)) + memcpy(skb_put(skb, arvif->u.ap.noa_len), + arvif->u.ap.noa_data, + arvif->u.ap.noa_len); + spin_unlock_bh(&ar->data_lock); + } +} + +static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + int ret; + + if (ieee80211_is_mgmt(hdr->frame_control)) + ret = ath10k_htt_mgmt_tx(ar->htt, skb); + else if (ieee80211_is_nullfunc(hdr->frame_control)) + /* FW does not report tx status properly for NullFunc frames + * unless they are sent through mgmt tx path. mac80211 sends + * those frames when it detects link/beacon loss and depends on + * the tx status to be correct. */ + ret = ath10k_htt_mgmt_tx(ar->htt, skb); + else + ret = ath10k_htt_tx(ar->htt, skb); + + if (ret) { + ath10k_warn("tx failed (%d). dropping packet.\n", ret); + ieee80211_free_txskb(ar->hw, skb); + } +} + +void ath10k_offchan_tx_purge(struct ath10k *ar) +{ + struct sk_buff *skb; + + for (;;) { + skb = skb_dequeue(&ar->offchan_tx_queue); + if (!skb) + break; + + ieee80211_free_txskb(ar->hw, skb); + } +} + +void ath10k_offchan_tx_work(struct work_struct *work) +{ + struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work); + struct ath10k_peer *peer; + struct ieee80211_hdr *hdr; + struct sk_buff *skb; + const u8 *peer_addr; + int vdev_id; + int ret; + + /* FW requirement: We must create a peer before FW will send out + * an offchannel frame. Otherwise the frame will be stuck and + * never transmitted. We delete the peer upon tx completion. + * It is unlikely that a peer for offchannel tx will already be + * present. However it may be in some rare cases so account for that. + * Otherwise we might remove a legitimate peer and break stuff. */ + + for (;;) { + skb = skb_dequeue(&ar->offchan_tx_queue); + if (!skb) + break; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ATH10K_DBG_MAC, "processing offchannel skb %p\n", + skb); + + hdr = (struct ieee80211_hdr *)skb->data; + peer_addr = ieee80211_get_DA(hdr); + vdev_id = ATH10K_SKB_CB(skb)->htt.vdev_id; + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, vdev_id, peer_addr); + spin_unlock_bh(&ar->data_lock); + + if (peer) + ath10k_dbg(ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n", + peer_addr, vdev_id); + + if (!peer) { + ret = ath10k_peer_create(ar, vdev_id, peer_addr); + if (ret) + ath10k_warn("peer %pM on vdev %d not created (%d)\n", + peer_addr, vdev_id, ret); + } + + spin_lock_bh(&ar->data_lock); + INIT_COMPLETION(ar->offchan_tx_completed); + ar->offchan_tx_skb = skb; + spin_unlock_bh(&ar->data_lock); + + ath10k_tx_htt(ar, skb); + + ret = wait_for_completion_timeout(&ar->offchan_tx_completed, + 3 * HZ); + if (ret <= 0) + ath10k_warn("timed out waiting for offchannel skb %p\n", + skb); + + if (!peer) { + ret = ath10k_peer_delete(ar, vdev_id, peer_addr); + if (ret) + ath10k_warn("peer %pM on vdev %d not deleted (%d)\n", + peer_addr, vdev_id, ret); + } + + mutex_unlock(&ar->conf_mutex); + } +} + +/************/ +/* Scanning */ +/************/ + +/* + * This gets called if we dont get a heart-beat during scan. + * This may indicate the FW has hung and we need to abort the + * scan manually to prevent cancel_hw_scan() from deadlocking + */ +void ath10k_reset_scan(unsigned long ptr) +{ + struct ath10k *ar = (struct ath10k *)ptr; + + spin_lock_bh(&ar->data_lock); + if (!ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + return; + } + + ath10k_warn("scan timeout. resetting. fw issue?\n"); + + if (ar->scan.is_roc) + ieee80211_remain_on_channel_expired(ar->hw); + else + ieee80211_scan_completed(ar->hw, 1 /* aborted */); + + ar->scan.in_progress = false; + complete_all(&ar->scan.completed); + spin_unlock_bh(&ar->data_lock); +} + +static int ath10k_abort_scan(struct ath10k *ar) +{ + struct wmi_stop_scan_arg arg = { + .req_id = 1, /* FIXME */ + .req_type = WMI_SCAN_STOP_ONE, + .u.scan_id = ATH10K_SCAN_ID, + }; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + del_timer_sync(&ar->scan.timeout); + + spin_lock_bh(&ar->data_lock); + if (!ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + return 0; + } + + ar->scan.aborting = true; + spin_unlock_bh(&ar->data_lock); + + ret = ath10k_wmi_stop_scan(ar, &arg); + if (ret) { + ath10k_warn("could not submit wmi stop scan (%d)\n", ret); + return -EIO; + } + + ath10k_wmi_flush_tx(ar); + + ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ); + if (ret == 0) + ath10k_warn("timed out while waiting for scan to stop\n"); + + /* scan completion may be done right after we timeout here, so let's + * check the in_progress and tell mac80211 scan is completed. if we + * don't do that and FW fails to send us scan completion indication + * then userspace won't be able to scan anymore */ + ret = 0; + + spin_lock_bh(&ar->data_lock); + if (ar->scan.in_progress) { + ath10k_warn("could not stop scan. its still in progress\n"); + ar->scan.in_progress = false; + ath10k_offchan_tx_purge(ar); + ret = -ETIMEDOUT; + } + spin_unlock_bh(&ar->data_lock); + + return ret; +} + +static int ath10k_start_scan(struct ath10k *ar, + const struct wmi_start_scan_arg *arg) +{ + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + ret = ath10k_wmi_start_scan(ar, arg); + if (ret) + return ret; + + /* make sure we submit the command so the completion + * timeout makes sense */ + ath10k_wmi_flush_tx(ar); + + ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ); + if (ret == 0) { + ath10k_abort_scan(ar); + return ret; + } + + /* the scan can complete earlier, before we even + * start the timer. in that case the timer handler + * checks ar->scan.in_progress and bails out if its + * false. Add a 200ms margin to account event/command + * processing. */ + mod_timer(&ar->scan.timeout, jiffies + + msecs_to_jiffies(arg->max_scan_time+200)); + return 0; +} + +/**********************/ +/* mac80211 callbacks */ +/**********************/ + +static void ath10k_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = NULL; + u32 vdev_id = 0; + u8 tid; + + if (info->control.vif) { + arvif = ath10k_vif_to_arvif(info->control.vif); + vdev_id = arvif->vdev_id; + } else if (ar->monitor_enabled) { + vdev_id = ar->monitor_vdev_id; + } + + /* We should disable CCK RATE due to P2P */ + if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE) + ath10k_dbg(ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n"); + + /* we must calculate tid before we apply qos workaround + * as we'd lose the qos control field */ + tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST; + if (ieee80211_is_data_qos(hdr->frame_control) && + is_unicast_ether_addr(ieee80211_get_DA(hdr))) { + u8 *qc = ieee80211_get_qos_ctl(hdr); + tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; + } + + ath10k_tx_h_qos_workaround(hw, control, skb); + ath10k_tx_h_update_wep_key(skb); + ath10k_tx_h_add_p2p_noa_ie(ar, skb); + ath10k_tx_h_seq_no(skb); + + memset(ATH10K_SKB_CB(skb), 0, sizeof(*ATH10K_SKB_CB(skb))); + ATH10K_SKB_CB(skb)->htt.vdev_id = vdev_id; + ATH10K_SKB_CB(skb)->htt.tid = tid; + + if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) { + spin_lock_bh(&ar->data_lock); + ATH10K_SKB_CB(skb)->htt.is_offchan = true; + ATH10K_SKB_CB(skb)->htt.vdev_id = ar->scan.vdev_id; + spin_unlock_bh(&ar->data_lock); + + ath10k_dbg(ATH10K_DBG_MAC, "queued offchannel skb %p\n", skb); + + skb_queue_tail(&ar->offchan_tx_queue, skb); + ieee80211_queue_work(hw, &ar->offchan_tx_work); + return; + } + + ath10k_tx_htt(ar, skb); +} + +/* + * Initialize various parameters with default vaules. + */ +static int ath10k_start(struct ieee80211_hw *hw) +{ + struct ath10k *ar = hw->priv; + int ret; + + ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_PMF_QOS, 1); + if (ret) + ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n", + ret); + + ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_DYNAMIC_BW, 0); + if (ret) + ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n", + ret); + + return 0; +} + +static void ath10k_stop(struct ieee80211_hw *hw) +{ + struct ath10k *ar = hw->priv; + + /* avoid leaks in case FW never confirms scan for offchannel */ + cancel_work_sync(&ar->offchan_tx_work); + ath10k_offchan_tx_purge(ar); +} + +static int ath10k_config(struct ieee80211_hw *hw, u32 changed) +{ + struct ath10k_generic_iter ar_iter; + struct ath10k *ar = hw->priv; + struct ieee80211_conf *conf = &hw->conf; + int ret = 0; + u32 flags; + + mutex_lock(&ar->conf_mutex); + + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + ath10k_dbg(ATH10K_DBG_MAC, "Config channel %d mhz\n", + conf->chandef.chan->center_freq); + spin_lock_bh(&ar->data_lock); + ar->rx_channel = conf->chandef.chan; + spin_unlock_bh(&ar->data_lock); + } + + if (changed & IEEE80211_CONF_CHANGE_PS) { + memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter)); + ar_iter.ar = ar; + flags = IEEE80211_IFACE_ITER_RESUME_ALL; + + ieee80211_iterate_active_interfaces_atomic(hw, + flags, + ath10k_ps_iter, + &ar_iter); + + ret = ar_iter.ret; + } + + if (changed & IEEE80211_CONF_CHANGE_MONITOR) { + if (conf->flags & IEEE80211_CONF_MONITOR) + ret = ath10k_monitor_create(ar); + else + ret = ath10k_monitor_destroy(ar); + } + + mutex_unlock(&ar->conf_mutex); + return ret; +} + +/* + * TODO: + * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE, + * because we will send mgmt frames without CCK. This requirement + * for P2P_FIND/GO_NEG should be handled by checking CCK flag + * in the TX packet. + */ +static int ath10k_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + enum wmi_sta_powersave_param param; + int ret = 0; + u32 value; + int bit; + + mutex_lock(&ar->conf_mutex); + + arvif->ar = ar; + arvif->vif = vif; + + if ((vif->type == NL80211_IFTYPE_MONITOR) && ar->monitor_present) { + ath10k_warn("Only one monitor interface allowed\n"); + ret = -EBUSY; + goto exit; + } + + bit = ffs(ar->free_vdev_map); + if (bit == 0) { + ret = -EBUSY; + goto exit; + } + + arvif->vdev_id = bit - 1; + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE; + ar->free_vdev_map &= ~(1 << arvif->vdev_id); + + if (ar->p2p) + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE; + + switch (vif->type) { + case NL80211_IFTYPE_UNSPECIFIED: + case NL80211_IFTYPE_STATION: + arvif->vdev_type = WMI_VDEV_TYPE_STA; + if (vif->p2p) + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT; + break; + case NL80211_IFTYPE_ADHOC: + arvif->vdev_type = WMI_VDEV_TYPE_IBSS; + break; + case NL80211_IFTYPE_AP: + arvif->vdev_type = WMI_VDEV_TYPE_AP; + + if (vif->p2p) + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO; + break; + case NL80211_IFTYPE_MONITOR: + arvif->vdev_type = WMI_VDEV_TYPE_MONITOR; + break; + default: + WARN_ON(1); + break; + } + + ath10k_dbg(ATH10K_DBG_MAC, "Add interface: id %d type %d subtype %d\n", + arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype); + + ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type, + arvif->vdev_subtype, vif->addr); + if (ret) { + ath10k_warn("WMI vdev create failed: ret %d\n", ret); + goto exit; + } + + ret = ath10k_wmi_vdev_set_param(ar, 0, WMI_VDEV_PARAM_DEF_KEYID, + arvif->def_wep_key_index); + if (ret) + ath10k_warn("Failed to set default keyid: %d\n", ret); + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_TX_ENCAP_TYPE, + ATH10K_HW_TXRX_NATIVE_WIFI); + if (ret) + ath10k_warn("Failed to set TX encap: %d\n", ret); + + if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr); + if (ret) { + ath10k_warn("Failed to create peer for AP: %d\n", ret); + goto exit; + } + } + + if (arvif->vdev_type == WMI_VDEV_TYPE_STA) { + param = WMI_STA_PS_PARAM_RX_WAKE_POLICY; + value = WMI_STA_PS_RX_WAKE_POLICY_WAKE; + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + param, value); + if (ret) + ath10k_warn("Failed to set RX wake policy: %d\n", ret); + + param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD; + value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS; + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + param, value); + if (ret) + ath10k_warn("Failed to set TX wake thresh: %d\n", ret); + + param = WMI_STA_PS_PARAM_PSPOLL_COUNT; + value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX; + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + param, value); + if (ret) + ath10k_warn("Failed to set PSPOLL count: %d\n", ret); + } + + if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) + ar->monitor_present = true; + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static void ath10k_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ATH10K_DBG_MAC, "Remove interface: id %d\n", arvif->vdev_id); + + ar->free_vdev_map |= 1 << (arvif->vdev_id); + + if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr); + if (ret) + ath10k_warn("Failed to remove peer for AP: %d\n", ret); + + kfree(arvif->u.ap.noa_data); + } + + ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id); + if (ret) + ath10k_warn("WMI vdev delete failed: %d\n", ret); + + if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) + ar->monitor_present = false; + + ath10k_peer_cleanup(ar, arvif->vdev_id); + + mutex_unlock(&ar->conf_mutex); +} + +/* + * FIXME: Has to be verified. + */ +#define SUPPORTED_FILTERS \ + (FIF_PROMISC_IN_BSS | \ + FIF_ALLMULTI | \ + FIF_CONTROL | \ + FIF_PSPOLL | \ + FIF_OTHER_BSS | \ + FIF_BCN_PRBRESP_PROMISC | \ + FIF_PROBE_REQ | \ + FIF_FCSFAIL) + +static void ath10k_configure_filter(struct ieee80211_hw *hw, + unsigned int changed_flags, + unsigned int *total_flags, + u64 multicast) +{ + struct ath10k *ar = hw->priv; + int ret; + + mutex_lock(&ar->conf_mutex); + + changed_flags &= SUPPORTED_FILTERS; + *total_flags &= SUPPORTED_FILTERS; + ar->filter_flags = *total_flags; + + if ((ar->filter_flags & FIF_PROMISC_IN_BSS) && + !ar->monitor_enabled) { + ret = ath10k_monitor_start(ar, ar->monitor_vdev_id); + if (ret) + ath10k_warn("Unable to start monitor mode\n"); + else + ath10k_dbg(ATH10K_DBG_MAC, "Monitor mode started\n"); + } else if (!(ar->filter_flags & FIF_PROMISC_IN_BSS) && + ar->monitor_enabled) { + ret = ath10k_monitor_stop(ar); + if (ret) + ath10k_warn("Unable to stop monitor mode\n"); + else + ath10k_dbg(ATH10K_DBG_MAC, "Monitor mode stopped\n"); + } + + mutex_unlock(&ar->conf_mutex); +} + +static void ath10k_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, + u32 changed) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret = 0; + + mutex_lock(&ar->conf_mutex); + + if (changed & BSS_CHANGED_IBSS) + ath10k_control_ibss(arvif, info, vif->addr); + + if (changed & BSS_CHANGED_BEACON_INT) { + arvif->beacon_interval = info->beacon_int; + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_BEACON_INTERVAL, + arvif->beacon_interval); + if (ret) + ath10k_warn("Failed to set beacon interval for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Beacon interval: %d set for VDEV: %d\n", + arvif->beacon_interval, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_BEACON) { + ret = ath10k_wmi_pdev_set_param(ar, + WMI_PDEV_PARAM_BEACON_TX_MODE, + WMI_BEACON_STAGGERED_MODE); + if (ret) + ath10k_warn("Failed to set beacon mode for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set staggered beacon mode for VDEV: %d\n", + arvif->vdev_id); + } + + if (changed & BSS_CHANGED_BEACON_INFO) { + arvif->dtim_period = info->dtim_period; + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_DTIM_PERIOD, + arvif->dtim_period); + if (ret) + ath10k_warn("Failed to set dtim period for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set dtim period: %d for VDEV: %d\n", + arvif->dtim_period, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_SSID && + vif->type == NL80211_IFTYPE_AP) { + arvif->u.ap.ssid_len = info->ssid_len; + if (info->ssid_len) + memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len); + arvif->u.ap.hidden_ssid = info->hidden_ssid; + } + + if (changed & BSS_CHANGED_BSSID) { + if (!is_zero_ether_addr(info->bssid)) { + ret = ath10k_peer_create(ar, arvif->vdev_id, + info->bssid); + if (ret) + ath10k_warn("Failed to add peer: %pM for VDEV: %d\n", + info->bssid, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Added peer: %pM for VDEV: %d\n", + info->bssid, arvif->vdev_id); + + + if (vif->type == NL80211_IFTYPE_STATION) { + /* + * this is never erased as we it for crypto key + * clearing; this is FW requirement + */ + memcpy(arvif->u.sta.bssid, info->bssid, + ETH_ALEN); + + ret = ath10k_vdev_start(arvif); + if (!ret) + ath10k_dbg(ATH10K_DBG_MAC, + "VDEV: %d started with BSSID: %pM\n", + arvif->vdev_id, info->bssid); + } + + /* + * Mac80211 does not keep IBSS bssid when leaving IBSS, + * so driver need to store it. It is needed when leaving + * IBSS in order to remove BSSID peer. + */ + if (vif->type == NL80211_IFTYPE_ADHOC) + memcpy(arvif->u.ibss.bssid, info->bssid, + ETH_ALEN); + } + } + + if (changed & BSS_CHANGED_BEACON_ENABLED) + ath10k_control_beaconing(arvif, info); + + if (changed & BSS_CHANGED_ERP_CTS_PROT) { + u32 cts_prot; + if (info->use_cts_prot) + cts_prot = 1; + else + cts_prot = 0; + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_ENABLE_RTSCTS, + cts_prot); + if (ret) + ath10k_warn("Failed to set CTS prot for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set CTS prot: %d for VDEV: %d\n", + cts_prot, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_ERP_SLOT) { + u32 slottime; + if (info->use_short_slot) + slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */ + + else + slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */ + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_SLOT_TIME, + slottime); + if (ret) + ath10k_warn("Failed to set erp slot for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set slottime: %d for VDEV: %d\n", + slottime, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_ERP_PREAMBLE) { + u32 preamble; + if (info->use_short_preamble) + preamble = WMI_VDEV_PREAMBLE_SHORT; + else + preamble = WMI_VDEV_PREAMBLE_LONG; + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_PREAMBLE, + preamble); + if (ret) + ath10k_warn("Failed to set preamble for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set preamble: %d for VDEV: %d\n", + preamble, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_ASSOC) { + if (info->assoc) + ath10k_bss_assoc(hw, vif, info); + } + + mutex_unlock(&ar->conf_mutex); +} + +static int ath10k_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_scan_request *req) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct wmi_start_scan_arg arg; + int ret = 0; + int i; + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + if (ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + ret = -EBUSY; + goto exit; + } + + INIT_COMPLETION(ar->scan.started); + INIT_COMPLETION(ar->scan.completed); + ar->scan.in_progress = true; + ar->scan.aborting = false; + ar->scan.is_roc = false; + ar->scan.vdev_id = arvif->vdev_id; + spin_unlock_bh(&ar->data_lock); + + memset(&arg, 0, sizeof(arg)); + ath10k_wmi_start_scan_init(ar, &arg); + arg.vdev_id = arvif->vdev_id; + arg.scan_id = ATH10K_SCAN_ID; + + if (!req->no_cck) + arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES; + + if (req->ie_len) { + arg.ie_len = req->ie_len; + memcpy(arg.ie, req->ie, arg.ie_len); + } + + if (req->n_ssids) { + arg.n_ssids = req->n_ssids; + for (i = 0; i < arg.n_ssids; i++) { + arg.ssids[i].len = req->ssids[i].ssid_len; + arg.ssids[i].ssid = req->ssids[i].ssid; + } + } + + if (req->n_channels) { + arg.n_channels = req->n_channels; + for (i = 0; i < arg.n_channels; i++) + arg.channels[i] = req->channels[i]->center_freq; + } + + ret = ath10k_start_scan(ar, &arg); + if (ret) { + ath10k_warn("could not start hw scan (%d)\n", ret); + spin_lock_bh(&ar->data_lock); + ar->scan.in_progress = false; + spin_unlock_bh(&ar->data_lock); + } + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + int ret; + + mutex_lock(&ar->conf_mutex); + ret = ath10k_abort_scan(ar); + if (ret) { + ath10k_warn("couldn't abort scan (%d). forcefully sending scan completion to mac80211\n", + ret); + ieee80211_scan_completed(hw, 1 /* aborted */); + } + mutex_unlock(&ar->conf_mutex); +} + +static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct ath10k_peer *peer; + const u8 *peer_addr; + bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 || + key->cipher == WLAN_CIPHER_SUITE_WEP104; + int ret = 0; + + if (key->keyidx > WMI_MAX_KEY_INDEX) + return -ENOSPC; + + mutex_lock(&ar->conf_mutex); + + if (sta) + peer_addr = sta->addr; + else if (arvif->vdev_type == WMI_VDEV_TYPE_STA) + peer_addr = vif->bss_conf.bssid; + else + peer_addr = vif->addr; + + key->hw_key_idx = key->keyidx; + + /* the peer should not disappear in mid-way (unless FW goes awry) since + * we already hold conf_mutex. we just make sure its there now. */ + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr); + spin_unlock_bh(&ar->data_lock); + + if (!peer) { + if (cmd == SET_KEY) { + ath10k_warn("cannot install key for non-existent peer %pM\n", + peer_addr); + ret = -EOPNOTSUPP; + goto exit; + } else { + /* if the peer doesn't exist there is no key to disable + * anymore */ + goto exit; + } + } + + if (is_wep) { + if (cmd == SET_KEY) + arvif->wep_keys[key->keyidx] = key; + else + arvif->wep_keys[key->keyidx] = NULL; + + if (cmd == DISABLE_KEY) + ath10k_clear_vdev_key(arvif, key); + } + + ret = ath10k_install_key(arvif, key, cmd, peer_addr); + if (ret) { + ath10k_warn("ath10k_install_key failed (%d)\n", ret); + goto exit; + } + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr); + if (peer && cmd == SET_KEY) + peer->keys[key->keyidx] = key; + else if (peer && cmd == DISABLE_KEY) + peer->keys[key->keyidx] = NULL; + else if (peer == NULL) + /* impossible unless FW goes crazy */ + ath10k_warn("peer %pM disappeared!\n", peer_addr); + spin_unlock_bh(&ar->data_lock); + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_sta_state(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret = 0; + + mutex_lock(&ar->conf_mutex); + + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE && + vif->type != NL80211_IFTYPE_STATION) { + /* + * New station addition. + */ + ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr); + if (ret) + ath10k_warn("Failed to add peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Added peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + } else if ((old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST)) { + /* + * Existing station deletion. + */ + ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr); + if (ret) + ath10k_warn("Failed to delete peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Removed peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + + if (vif->type == NL80211_IFTYPE_STATION) + ath10k_bss_disassoc(hw, vif); + } else if (old_state == IEEE80211_STA_AUTH && + new_state == IEEE80211_STA_ASSOC && + (vif->type == NL80211_IFTYPE_AP || + vif->type == NL80211_IFTYPE_ADHOC)) { + /* + * New association. + */ + ret = ath10k_station_assoc(ar, arvif, sta); + if (ret) + ath10k_warn("Failed to associate station: %pM\n", + sta->addr); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Station %pM moved to assoc state\n", + sta->addr); + } else if (old_state == IEEE80211_STA_ASSOC && + new_state == IEEE80211_STA_AUTH && + (vif->type == NL80211_IFTYPE_AP || + vif->type == NL80211_IFTYPE_ADHOC)) { + /* + * Disassociation. + */ + ret = ath10k_station_disassoc(ar, arvif, sta); + if (ret) + ath10k_warn("Failed to disassociate station: %pM\n", + sta->addr); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Station %pM moved to disassociated state\n", + sta->addr); + } + + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif, + u16 ac, bool enable) +{ + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 value = 0; + int ret = 0; + + if (arvif->vdev_type != WMI_VDEV_TYPE_STA) + return 0; + + switch (ac) { + case IEEE80211_AC_VO: + value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC3_TRIGGER_EN; + break; + case IEEE80211_AC_VI: + value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC2_TRIGGER_EN; + break; + case IEEE80211_AC_BE: + value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC1_TRIGGER_EN; + break; + case IEEE80211_AC_BK: + value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC0_TRIGGER_EN; + break; + } + + if (enable) + arvif->u.sta.uapsd |= value; + else + arvif->u.sta.uapsd &= ~value; + + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + WMI_STA_PS_PARAM_UAPSD, + arvif->u.sta.uapsd); + if (ret) { + ath10k_warn("could not set uapsd params %d\n", ret); + goto exit; + } + + if (arvif->u.sta.uapsd) + value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD; + else + value = WMI_STA_PS_RX_WAKE_POLICY_WAKE; + + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + WMI_STA_PS_PARAM_RX_WAKE_POLICY, + value); + if (ret) + ath10k_warn("could not set rx wake param %d\n", ret); + +exit: + return ret; +} + +static int ath10k_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u16 ac, + const struct ieee80211_tx_queue_params *params) +{ + struct ath10k *ar = hw->priv; + struct wmi_wmm_params_arg *p = NULL; + int ret; + + mutex_lock(&ar->conf_mutex); + + switch (ac) { + case IEEE80211_AC_VO: + p = &ar->wmm_params.ac_vo; + break; + case IEEE80211_AC_VI: + p = &ar->wmm_params.ac_vi; + break; + case IEEE80211_AC_BE: + p = &ar->wmm_params.ac_be; + break; + case IEEE80211_AC_BK: + p = &ar->wmm_params.ac_bk; + break; + } + + if (WARN_ON(!p)) { + ret = -EINVAL; + goto exit; + } + + p->cwmin = params->cw_min; + p->cwmax = params->cw_max; + p->aifs = params->aifs; + + /* + * The channel time duration programmed in the HW is in absolute + * microseconds, while mac80211 gives the txop in units of + * 32 microseconds. + */ + p->txop = params->txop * 32; + + /* FIXME: FW accepts wmm params per hw, not per vif */ + ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params); + if (ret) { + ath10k_warn("could not set wmm params %d\n", ret); + goto exit; + } + + ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd); + if (ret) + ath10k_warn("could not set sta uapsd %d\n", ret); + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +#define ATH10K_ROC_TIMEOUT_HZ (2*HZ) + +static int ath10k_remain_on_channel(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel *chan, + int duration, + enum ieee80211_roc_type type) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct wmi_start_scan_arg arg; + int ret; + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + if (ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + ret = -EBUSY; + goto exit; + } + + INIT_COMPLETION(ar->scan.started); + INIT_COMPLETION(ar->scan.completed); + INIT_COMPLETION(ar->scan.on_channel); + ar->scan.in_progress = true; + ar->scan.aborting = false; + ar->scan.is_roc = true; + ar->scan.vdev_id = arvif->vdev_id; + ar->scan.roc_freq = chan->center_freq; + spin_unlock_bh(&ar->data_lock); + + memset(&arg, 0, sizeof(arg)); + ath10k_wmi_start_scan_init(ar, &arg); + arg.vdev_id = arvif->vdev_id; + arg.scan_id = ATH10K_SCAN_ID; + arg.n_channels = 1; + arg.channels[0] = chan->center_freq; + arg.dwell_time_active = duration; + arg.dwell_time_passive = duration; + arg.max_scan_time = 2 * duration; + arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE; + arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ; + + ret = ath10k_start_scan(ar, &arg); + if (ret) { + ath10k_warn("could not start roc scan (%d)\n", ret); + spin_lock_bh(&ar->data_lock); + ar->scan.in_progress = false; + spin_unlock_bh(&ar->data_lock); + goto exit; + } + + ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ); + if (ret == 0) { + ath10k_warn("could not switch to channel for roc scan\n"); + ath10k_abort_scan(ar); + ret = -ETIMEDOUT; + goto exit; + } + + ret = 0; +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw) +{ + struct ath10k *ar = hw->priv; + + mutex_lock(&ar->conf_mutex); + ath10k_abort_scan(ar); + mutex_unlock(&ar->conf_mutex); + + return 0; +} + +/* + * Both RTS and Fragmentation threshold are interface-specific + * in ath10k, but device-specific in mac80211. + */ +static void ath10k_set_rts_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath10k_generic_iter *ar_iter = data; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 rts = ar_iter->ar->hw->wiphy->rts_threshold; + + rts = min_t(u32, rts, ATH10K_RTS_MAX); + + ar_iter->ret = ath10k_wmi_vdev_set_param(ar_iter->ar, arvif->vdev_id, + WMI_VDEV_PARAM_RTS_THRESHOLD, + rts); + if (ar_iter->ret) + ath10k_warn("Failed to set RTS threshold for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set RTS threshold: %d for VDEV: %d\n", + rts, arvif->vdev_id); +} + +static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct ath10k_generic_iter ar_iter; + struct ath10k *ar = hw->priv; + + memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter)); + ar_iter.ar = ar; + + mutex_lock(&ar->conf_mutex); + ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath10k_set_rts_iter, &ar_iter); + mutex_unlock(&ar->conf_mutex); + + return ar_iter.ret; +} + +static void ath10k_set_frag_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath10k_generic_iter *ar_iter = data; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 frag = ar_iter->ar->hw->wiphy->frag_threshold; + int ret; + + frag = clamp_t(u32, frag, + ATH10K_FRAGMT_THRESHOLD_MIN, + ATH10K_FRAGMT_THRESHOLD_MAX); + + ret = ath10k_wmi_vdev_set_param(ar_iter->ar, arvif->vdev_id, + WMI_VDEV_PARAM_FRAGMENTATION_THRESHOLD, + frag); + + ar_iter->ret = ret; + if (ar_iter->ret) + ath10k_warn("Failed to set frag threshold for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set frag threshold: %d for VDEV: %d\n", + frag, arvif->vdev_id); +} + +static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct ath10k_generic_iter ar_iter; + struct ath10k *ar = hw->priv; + + memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter)); + ar_iter.ar = ar; + + mutex_lock(&ar->conf_mutex); + ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath10k_set_frag_iter, &ar_iter); + mutex_unlock(&ar->conf_mutex); + + return ar_iter.ret; +} + +static void ath10k_flush(struct ieee80211_hw *hw, u32 queues, bool drop) +{ + struct ath10k *ar = hw->priv; + int ret; + + /* mac80211 doesn't care if we really xmit queued frames or not + * we'll collect those frames either way if we stop/delete vdevs */ + if (drop) + return; + + ret = wait_event_timeout(ar->htt->empty_tx_wq, ({ + bool empty; + spin_lock_bh(&ar->htt->tx_lock); + empty = bitmap_empty(ar->htt->used_msdu_ids, + ar->htt->max_num_pending_tx); + spin_unlock_bh(&ar->htt->tx_lock); + (empty); + }), ATH10K_FLUSH_TIMEOUT_HZ); + if (ret <= 0) + ath10k_warn("tx not flushed\n"); +} + +/* TODO: Implement this function properly + * For now it is needed to reply to Probe Requests in IBSS mode. + * Propably we need this information from FW. + */ +static int ath10k_tx_last_beacon(struct ieee80211_hw *hw) +{ + return 1; +} + +static const struct ieee80211_ops ath10k_ops = { + .tx = ath10k_tx, + .start = ath10k_start, + .stop = ath10k_stop, + .config = ath10k_config, + .add_interface = ath10k_add_interface, + .remove_interface = ath10k_remove_interface, + .configure_filter = ath10k_configure_filter, + .bss_info_changed = ath10k_bss_info_changed, + .hw_scan = ath10k_hw_scan, + .cancel_hw_scan = ath10k_cancel_hw_scan, + .set_key = ath10k_set_key, + .sta_state = ath10k_sta_state, + .conf_tx = ath10k_conf_tx, + .remain_on_channel = ath10k_remain_on_channel, + .cancel_remain_on_channel = ath10k_cancel_remain_on_channel, + .set_rts_threshold = ath10k_set_rts_threshold, + .set_frag_threshold = ath10k_set_frag_threshold, + .flush = ath10k_flush, + .tx_last_beacon = ath10k_tx_last_beacon, +}; + +#define RATETAB_ENT(_rate, _rateid, _flags) { \ + .bitrate = (_rate), \ + .flags = (_flags), \ + .hw_value = (_rateid), \ +} + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define CHAN5G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_5GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static const struct ieee80211_channel ath10k_2ghz_channels[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +static const struct ieee80211_channel ath10k_5ghz_channels[] = { + CHAN5G(36, 5180, 0), + CHAN5G(40, 5200, 0), + CHAN5G(44, 5220, 0), + CHAN5G(48, 5240, 0), + CHAN5G(52, 5260, 0), + CHAN5G(56, 5280, 0), + CHAN5G(60, 5300, 0), + CHAN5G(64, 5320, 0), + CHAN5G(100, 5500, 0), + CHAN5G(104, 5520, 0), + CHAN5G(108, 5540, 0), + CHAN5G(112, 5560, 0), + CHAN5G(116, 5580, 0), + CHAN5G(120, 5600, 0), + CHAN5G(124, 5620, 0), + CHAN5G(128, 5640, 0), + CHAN5G(132, 5660, 0), + CHAN5G(136, 5680, 0), + CHAN5G(140, 5700, 0), + CHAN5G(149, 5745, 0), + CHAN5G(153, 5765, 0), + CHAN5G(157, 5785, 0), + CHAN5G(161, 5805, 0), + CHAN5G(165, 5825, 0), +}; + +static struct ieee80211_rate ath10k_rates[] = { + /* CCK */ + RATETAB_ENT(10, 0x82, 0), + RATETAB_ENT(20, 0x84, 0), + RATETAB_ENT(55, 0x8b, 0), + RATETAB_ENT(110, 0x96, 0), + /* OFDM */ + RATETAB_ENT(60, 0x0c, 0), + RATETAB_ENT(90, 0x12, 0), + RATETAB_ENT(120, 0x18, 0), + RATETAB_ENT(180, 0x24, 0), + RATETAB_ENT(240, 0x30, 0), + RATETAB_ENT(360, 0x48, 0), + RATETAB_ENT(480, 0x60, 0), + RATETAB_ENT(540, 0x6c, 0), +}; + +#define ath10k_a_rates (ath10k_rates + 4) +#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4) +#define ath10k_g_rates (ath10k_rates + 0) +#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates)) + +struct ath10k *ath10k_mac_create(void) +{ + struct ieee80211_hw *hw; + struct ath10k *ar; + + hw = ieee80211_alloc_hw(sizeof(struct ath10k), &ath10k_ops); + if (!hw) + return NULL; + + ar = hw->priv; + ar->hw = hw; + + return ar; +} + +void ath10k_mac_destroy(struct ath10k *ar) +{ + ieee80211_free_hw(ar->hw); +} + +static const struct ieee80211_iface_limit ath10k_if_limits[] = { + { + .max = 8, + .types = BIT(NL80211_IFTYPE_STATION) + | BIT(NL80211_IFTYPE_P2P_CLIENT) + | BIT(NL80211_IFTYPE_P2P_GO) + | BIT(NL80211_IFTYPE_AP) + } +}; + +static const struct ieee80211_iface_combination ath10k_if_comb = { + .limits = ath10k_if_limits, + .n_limits = ARRAY_SIZE(ath10k_if_limits), + .max_interfaces = 8, + .num_different_channels = 1, + .beacon_int_infra_match = true, +}; + +static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar) +{ + struct ieee80211_sta_vht_cap vht_cap = {0}; + u16 mcs_map; + + vht_cap.vht_supported = 1; + vht_cap.cap = ar->vht_cap_info; + + /* FIXME: check dynamically how many streams board supports */ + mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 | + IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 | + IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 14; + + vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); + vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); + + return vht_cap; +} + +static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar) +{ + int i; + struct ieee80211_sta_ht_cap ht_cap = {0}; + + if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED)) + return ht_cap; + + ht_cap.ht_supported = 1; + ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; + ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; + ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; + ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40; + ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT; + + if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI) + ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; + + if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI) + ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; + + if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) { + u32 smps; + + smps = WLAN_HT_CAP_SM_PS_DYNAMIC; + smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT; + + ht_cap.cap |= smps; + } + + if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC) + ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; + + if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) { + u32 stbc; + + stbc = ar->ht_cap_info; + stbc &= WMI_HT_CAP_RX_STBC; + stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT; + stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT; + stbc &= IEEE80211_HT_CAP_RX_STBC; + + ht_cap.cap |= stbc; + } + + if (ar->ht_cap_info & WMI_HT_CAP_LDPC) + ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING; + + if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT) + ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT; + + /* max AMSDU is implicitly taken from vht_cap_info */ + if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK) + ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; + + for (i = 0; i < WMI_MAX_SPATIAL_STREAM; i++) + ht_cap.mcs.rx_mask[i] = 0xFF; + + ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; + + return ht_cap; +} + + +static void ath10k_get_arvif_iter(void *data, u8 *mac, + struct ieee80211_vif *vif) +{ + struct ath10k_vif_iter *arvif_iter = data; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + + if (arvif->vdev_id == arvif_iter->vdev_id) + arvif_iter->arvif = arvif; +} + +struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id) +{ + struct ath10k_vif_iter arvif_iter; + u32 flags; + + memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter)); + arvif_iter.vdev_id = vdev_id; + + flags = IEEE80211_IFACE_ITER_RESUME_ALL; + ieee80211_iterate_active_interfaces_atomic(ar->hw, + flags, + ath10k_get_arvif_iter, + &arvif_iter); + if (!arvif_iter.arvif) { + ath10k_warn("No VIF found for VDEV: %d\n", vdev_id); + return NULL; + } + + return arvif_iter.arvif; +} + +int ath10k_mac_register(struct ath10k *ar) +{ + struct ieee80211_supported_band *band; + struct ieee80211_sta_vht_cap vht_cap; + struct ieee80211_sta_ht_cap ht_cap; + void *channels; + int ret; + + SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr); + + SET_IEEE80211_DEV(ar->hw, ar->dev); + + ht_cap = ath10k_get_ht_cap(ar); + vht_cap = ath10k_create_vht_cap(ar); + + if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) { + channels = kmemdup(ath10k_2ghz_channels, + sizeof(ath10k_2ghz_channels), + GFP_KERNEL); + if (!channels) + return -ENOMEM; + + band = &ar->mac.sbands[IEEE80211_BAND_2GHZ]; + band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels); + band->channels = channels; + band->n_bitrates = ath10k_g_rates_size; + band->bitrates = ath10k_g_rates; + band->ht_cap = ht_cap; + + /* vht is not supported in 2.4 GHz */ + + ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band; + } + + if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) { + channels = kmemdup(ath10k_5ghz_channels, + sizeof(ath10k_5ghz_channels), + GFP_KERNEL); + if (!channels) { + if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) { + band = &ar->mac.sbands[IEEE80211_BAND_2GHZ]; + kfree(band->channels); + } + return -ENOMEM; + } + + band = &ar->mac.sbands[IEEE80211_BAND_5GHZ]; + band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels); + band->channels = channels; + band->n_bitrates = ath10k_a_rates_size; + band->bitrates = ath10k_a_rates; + band->ht_cap = ht_cap; + band->vht_cap = vht_cap; + ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band; + } + + ar->hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO); + + ar->hw->flags = IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_SUPPORTS_DYNAMIC_PS | + IEEE80211_HW_SUPPORTS_UAPSD | + IEEE80211_HW_MFP_CAPABLE | + IEEE80211_HW_REPORTS_TX_ACK_STATUS | + IEEE80211_HW_HAS_RATE_CONTROL | + IEEE80211_HW_SUPPORTS_STATIC_SMPS | + IEEE80211_HW_WANT_MONITOR_VIF | + IEEE80211_HW_AP_LINK_PS; + + if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) + ar->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS; + + if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) { + ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; + ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW; + } + + ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID; + ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN; + + ar->hw->vif_data_size = sizeof(struct ath10k_vif); + + ar->hw->channel_change_time = 5000; + ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL; + + ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; + ar->hw->wiphy->max_remain_on_channel_duration = 5000; + + ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; + /* + * on LL hardware queues are managed entirely by the FW + * so we only advertise to mac we can do the queues thing + */ + ar->hw->queues = 4; + + ar->hw->wiphy->iface_combinations = &ath10k_if_comb; + ar->hw->wiphy->n_iface_combinations = 1; + + ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy, + ath10k_reg_notifier); + if (ret) { + ath10k_err("Regulatory initialization failed\n"); + return ret; + } + + ret = ieee80211_register_hw(ar->hw); + if (ret) { + ath10k_err("ieee80211 registration failed: %d\n", ret); + return ret; + } + + if (!ath_is_world_regd(&ar->ath_common.regulatory)) { + ret = regulatory_hint(ar->hw->wiphy, + ar->ath_common.regulatory.alpha2); + if (ret) + goto exit; + } + + return 0; +exit: + ieee80211_unregister_hw(ar->hw); + return ret; +} + +void ath10k_mac_unregister(struct ath10k *ar) +{ + ieee80211_unregister_hw(ar->hw); + + kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels); + kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels); + + SET_IEEE80211_DEV(ar->hw, NULL); +} |