From 52409fae3e4b8d16b68b61902fc09075cd97b75d Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Sun, 2 Jul 2017 16:41:37 +0200 Subject: Backports generated from 4.11 kernel Initial commit. Signed-off-by: Dominik Sliwa --- net/mac80211/driver-ops.c | 320 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 320 insertions(+) create mode 100644 net/mac80211/driver-ops.c (limited to 'net/mac80211/driver-ops.c') diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c new file mode 100644 index 0000000..bb886e7 --- /dev/null +++ b/net/mac80211/driver-ops.c @@ -0,0 +1,320 @@ +/* + * Copyright 2015 Intel Deutschland GmbH + * + * 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. + */ +#include +#include "ieee80211_i.h" +#include "trace.h" +#include "driver-ops.h" + +int drv_start(struct ieee80211_local *local) +{ + int ret; + + might_sleep(); + + if (WARN_ON(local->started)) + return -EALREADY; + + trace_drv_start(local); + local->started = true; + /* allow rx frames */ + smp_mb(); + ret = local->ops->start(&local->hw); + trace_drv_return_int(local, ret); + + if (ret) + local->started = false; + + return ret; +} + +void drv_stop(struct ieee80211_local *local) +{ + might_sleep(); + + if (WARN_ON(!local->started)) + return; + + trace_drv_stop(local); + local->ops->stop(&local->hw); + trace_drv_return_void(local); + + /* sync away all work on the tasklet before clearing started */ + tasklet_disable(&local->tasklet); + tasklet_enable(&local->tasklet); + + barrier(); + + local->started = false; +} + +int drv_add_interface(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + int ret; + + might_sleep(); + + if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN || + (sdata->vif.type == NL80211_IFTYPE_MONITOR && + !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && + !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)))) + return -EINVAL; + + trace_drv_add_interface(local, sdata); + ret = local->ops->add_interface(&local->hw, &sdata->vif); + trace_drv_return_int(local, ret); + + if (ret == 0) + sdata->flags |= IEEE80211_SDATA_IN_DRIVER; + + return ret; +} + +int drv_change_interface(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + enum nl80211_iftype type, bool p2p) +{ + int ret; + + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return -EIO; + + trace_drv_change_interface(local, sdata, type, p2p); + ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p); + trace_drv_return_int(local, ret); + return ret; +} + +void drv_remove_interface(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return; + + trace_drv_remove_interface(local, sdata); + local->ops->remove_interface(&local->hw, &sdata->vif); + sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; + trace_drv_return_void(local); +} + +__must_check +int drv_sta_state(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + int ret = 0; + + might_sleep(); + + sdata = get_bss_sdata(sdata); + if (!check_sdata_in_driver(sdata)) + return -EIO; + + trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state); + if (local->ops->sta_state) { + ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta, + old_state, new_state); + } else if (old_state == IEEE80211_STA_AUTH && + new_state == IEEE80211_STA_ASSOC) { + ret = drv_sta_add(local, sdata, &sta->sta); + if (ret == 0) + sta->uploaded = true; + } else if (old_state == IEEE80211_STA_ASSOC && + new_state == IEEE80211_STA_AUTH) { + drv_sta_remove(local, sdata, &sta->sta); + } + trace_drv_return_int(local, ret); + return ret; +} + +void drv_sta_rc_update(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_sta *sta, u32 changed) +{ + sdata = get_bss_sdata(sdata); + if (!check_sdata_in_driver(sdata)) + return; + + WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED && + (sdata->vif.type != NL80211_IFTYPE_ADHOC && + sdata->vif.type != NL80211_IFTYPE_MESH_POINT)); + + trace_drv_sta_rc_update(local, sdata, sta, changed); + if (local->ops->sta_rc_update) + local->ops->sta_rc_update(&local->hw, &sdata->vif, + sta, changed); + + trace_drv_return_void(local); +} + +int drv_conf_tx(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, u16 ac, + const struct ieee80211_tx_queue_params *params) +{ + int ret = -EOPNOTSUPP; + + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return -EIO; + + if (WARN_ONCE(params->cw_min == 0 || + params->cw_min > params->cw_max, + "%s: invalid CW_min/CW_max: %d/%d\n", + sdata->name, params->cw_min, params->cw_max)) + return -EINVAL; + + trace_drv_conf_tx(local, sdata, ac, params); + if (local->ops->conf_tx) + ret = local->ops->conf_tx(&local->hw, &sdata->vif, + ac, params); + trace_drv_return_int(local, ret); + return ret; +} + +u64 drv_get_tsf(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + u64 ret = -1ULL; + + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return ret; + + trace_drv_get_tsf(local, sdata); + if (local->ops->get_tsf) + ret = local->ops->get_tsf(&local->hw, &sdata->vif); + trace_drv_return_u64(local, ret); + return ret; +} + +void drv_set_tsf(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + u64 tsf) +{ + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return; + + trace_drv_set_tsf(local, sdata, tsf); + if (local->ops->set_tsf) + local->ops->set_tsf(&local->hw, &sdata->vif, tsf); + trace_drv_return_void(local); +} + +void drv_offset_tsf(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + s64 offset) +{ + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return; + + trace_drv_offset_tsf(local, sdata, offset); + if (local->ops->offset_tsf) + local->ops->offset_tsf(&local->hw, &sdata->vif, offset); + trace_drv_return_void(local); +} + +void drv_reset_tsf(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata) +{ + might_sleep(); + + if (!check_sdata_in_driver(sdata)) + return; + + trace_drv_reset_tsf(local, sdata); + if (local->ops->reset_tsf) + local->ops->reset_tsf(&local->hw, &sdata->vif); + trace_drv_return_void(local); +} + +int drv_switch_vif_chanctx(struct ieee80211_local *local, + struct ieee80211_vif_chanctx_switch *vifs, + int n_vifs, enum ieee80211_chanctx_switch_mode mode) +{ + int ret = 0; + int i; + + might_sleep(); + + if (!local->ops->switch_vif_chanctx) + return -EOPNOTSUPP; + + for (i = 0; i < n_vifs; i++) { + struct ieee80211_chanctx *new_ctx = + container_of(vifs[i].new_ctx, + struct ieee80211_chanctx, + conf); + struct ieee80211_chanctx *old_ctx = + container_of(vifs[i].old_ctx, + struct ieee80211_chanctx, + conf); + + WARN_ON_ONCE(!old_ctx->driver_present); + WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS && + new_ctx->driver_present) || + (mode == CHANCTX_SWMODE_REASSIGN_VIF && + !new_ctx->driver_present)); + } + + trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode); + ret = local->ops->switch_vif_chanctx(&local->hw, + vifs, n_vifs, mode); + trace_drv_return_int(local, ret); + + if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) { + for (i = 0; i < n_vifs; i++) { + struct ieee80211_chanctx *new_ctx = + container_of(vifs[i].new_ctx, + struct ieee80211_chanctx, + conf); + struct ieee80211_chanctx *old_ctx = + container_of(vifs[i].old_ctx, + struct ieee80211_chanctx, + conf); + + new_ctx->driver_present = true; + old_ctx->driver_present = false; + } + } + + return ret; +} + +int drv_ampdu_action(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_ampdu_params *params) +{ + int ret = -EOPNOTSUPP; + + might_sleep(); + + sdata = get_bss_sdata(sdata); + if (!check_sdata_in_driver(sdata)) + return -EIO; + + trace_drv_ampdu_action(local, sdata, params); + + if (local->ops->ampdu_action) + ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params); + + trace_drv_return_int(local, ret); + + return ret; +} -- cgit v1.2.3