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-rw-r--r--net/mac80211/driver-ops.c578
1 files changed, 578 insertions, 0 deletions
diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
new file mode 100644
index 0000000000..f8af0c3d40
--- /dev/null
+++ b/net/mac80211/driver-ops.c
@@ -0,0 +1,578 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2015 Intel Deutschland GmbH
+ * Copyright (C) 2022-2023 Intel Corporation
+ */
+#include <net/mac80211.h>
+#include "ieee80211_i.h"
+#include "trace.h"
+#include "driver-ops.h"
+#include "debugfs_sta.h"
+#include "debugfs_netdev.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;
+ if (rcu_access_pointer(sta->sta.rates))
+ drv_sta_rate_tbl_update(local, sdata, &sta->sta);
+ }
+ } 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;
+}
+
+__must_check
+int drv_sta_set_txpwr(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta)
+{
+ int ret = -EOPNOTSUPP;
+
+ might_sleep();
+
+ sdata = get_bss_sdata(sdata);
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ trace_drv_sta_set_txpwr(local, sdata, &sta->sta);
+ if (local->ops->sta_set_txpwr)
+ ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif,
+ &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_link_data *link, u16 ac,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct ieee80211_sub_if_data *sdata = link->sdata;
+ int ret = -EOPNOTSUPP;
+
+ might_sleep();
+
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ if (sdata->vif.active_links &&
+ !(sdata->vif.active_links & BIT(link->link_id)))
+ return 0;
+
+ if (params->cw_min == 0 || params->cw_min > params->cw_max) {
+ /*
+ * If we can't configure hardware anyway, don't warn. We may
+ * never have initialized the CW parameters.
+ */
+ WARN_ONCE(local->ops->conf_tx,
+ "%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, link->link_id, ac, params);
+ if (local->ops->conf_tx)
+ ret = local->ops->conf_tx(&local->hw, &sdata->vif,
+ link->link_id, 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_assign_vif_chanctx(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_bss_conf *link_conf,
+ struct ieee80211_chanctx *ctx)
+{
+ int ret = 0;
+
+ drv_verify_link_exists(sdata, link_conf);
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ if (sdata->vif.active_links &&
+ !(sdata->vif.active_links & BIT(link_conf->link_id)))
+ return 0;
+
+ trace_drv_assign_vif_chanctx(local, sdata, link_conf, ctx);
+ if (local->ops->assign_vif_chanctx) {
+ WARN_ON_ONCE(!ctx->driver_present);
+ ret = local->ops->assign_vif_chanctx(&local->hw,
+ &sdata->vif,
+ link_conf,
+ &ctx->conf);
+ }
+ trace_drv_return_int(local, ret);
+
+ return ret;
+}
+
+void drv_unassign_vif_chanctx(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_bss_conf *link_conf,
+ struct ieee80211_chanctx *ctx)
+{
+ might_sleep();
+
+ drv_verify_link_exists(sdata, link_conf);
+ if (!check_sdata_in_driver(sdata))
+ return;
+
+ if (sdata->vif.active_links &&
+ !(sdata->vif.active_links & BIT(link_conf->link_id)))
+ return;
+
+ trace_drv_unassign_vif_chanctx(local, sdata, link_conf, ctx);
+ if (local->ops->unassign_vif_chanctx) {
+ WARN_ON_ONCE(!ctx->driver_present);
+ local->ops->unassign_vif_chanctx(&local->hw,
+ &sdata->vif,
+ link_conf,
+ &ctx->conf);
+ }
+ 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();
+
+ if (!sdata)
+ return -EIO;
+
+ 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;
+}
+
+void drv_link_info_changed(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_bss_conf *info,
+ int link_id, u64 changed)
+{
+ might_sleep();
+
+ if (WARN_ON_ONCE(changed & (BSS_CHANGED_BEACON |
+ BSS_CHANGED_BEACON_ENABLED) &&
+ sdata->vif.type != NL80211_IFTYPE_AP &&
+ sdata->vif.type != NL80211_IFTYPE_ADHOC &&
+ sdata->vif.type != NL80211_IFTYPE_MESH_POINT &&
+ sdata->vif.type != NL80211_IFTYPE_OCB))
+ return;
+
+ if (WARN_ON_ONCE(sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE ||
+ sdata->vif.type == NL80211_IFTYPE_NAN ||
+ (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
+ !sdata->vif.bss_conf.mu_mimo_owner &&
+ !(changed & BSS_CHANGED_TXPOWER))))
+ return;
+
+ if (!check_sdata_in_driver(sdata))
+ return;
+
+ if (sdata->vif.active_links &&
+ !(sdata->vif.active_links & BIT(link_id)))
+ return;
+
+ trace_drv_link_info_changed(local, sdata, info, changed);
+ if (local->ops->link_info_changed)
+ local->ops->link_info_changed(&local->hw, &sdata->vif,
+ info, changed);
+ else if (local->ops->bss_info_changed)
+ local->ops->bss_info_changed(&local->hw, &sdata->vif,
+ info, changed);
+ trace_drv_return_void(local);
+}
+
+int drv_set_key(struct ieee80211_local *local,
+ enum set_key_cmd cmd,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ int ret;
+
+ might_sleep();
+
+ sdata = get_bss_sdata(sdata);
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ if (WARN_ON(key->link_id >= 0 && sdata->vif.active_links &&
+ !(sdata->vif.active_links & BIT(key->link_id))))
+ return -ENOLINK;
+
+ trace_drv_set_key(local, cmd, sdata, sta, key);
+ ret = local->ops->set_key(&local->hw, cmd, &sdata->vif, sta, key);
+ trace_drv_return_int(local, ret);
+ return ret;
+}
+
+int drv_change_vif_links(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ u16 old_links, u16 new_links,
+ struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
+{
+ struct ieee80211_link_data *link;
+ unsigned long links_to_add;
+ unsigned long links_to_rem;
+ unsigned int link_id;
+ int ret = -EOPNOTSUPP;
+
+ might_sleep();
+
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ if (old_links == new_links)
+ return 0;
+
+ links_to_add = ~old_links & new_links;
+ links_to_rem = old_links & ~new_links;
+
+ for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
+ link = rcu_access_pointer(sdata->link[link_id]);
+
+ ieee80211_link_debugfs_drv_remove(link);
+ }
+
+ trace_drv_change_vif_links(local, sdata, old_links, new_links);
+ if (local->ops->change_vif_links)
+ ret = local->ops->change_vif_links(&local->hw, &sdata->vif,
+ old_links, new_links, old);
+ trace_drv_return_int(local, ret);
+
+ if (ret)
+ return ret;
+
+ if (!local->in_reconfig) {
+ for_each_set_bit(link_id, &links_to_add,
+ IEEE80211_MLD_MAX_NUM_LINKS) {
+ link = rcu_access_pointer(sdata->link[link_id]);
+
+ ieee80211_link_debugfs_drv_add(link);
+ }
+ }
+
+ return 0;
+}
+
+int drv_change_sta_links(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta,
+ u16 old_links, u16 new_links)
+{
+ struct sta_info *info = container_of(sta, struct sta_info, sta);
+ struct link_sta_info *link_sta;
+ unsigned long links_to_add;
+ unsigned long links_to_rem;
+ unsigned int link_id;
+ int ret = -EOPNOTSUPP;
+
+ might_sleep();
+
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ old_links &= sdata->vif.active_links;
+ new_links &= sdata->vif.active_links;
+
+ if (old_links == new_links)
+ return 0;
+
+ links_to_add = ~old_links & new_links;
+ links_to_rem = old_links & ~new_links;
+
+ for_each_set_bit(link_id, &links_to_rem, IEEE80211_MLD_MAX_NUM_LINKS) {
+ link_sta = rcu_dereference_protected(info->link[link_id],
+ lockdep_is_held(&local->sta_mtx));
+
+ ieee80211_link_sta_debugfs_drv_remove(link_sta);
+ }
+
+ trace_drv_change_sta_links(local, sdata, sta, old_links, new_links);
+ if (local->ops->change_sta_links)
+ ret = local->ops->change_sta_links(&local->hw, &sdata->vif, sta,
+ old_links, new_links);
+ trace_drv_return_int(local, ret);
+
+ if (ret)
+ return ret;
+
+ /* during reconfig don't add it to debugfs again */
+ if (local->in_reconfig)
+ return 0;
+
+ for_each_set_bit(link_id, &links_to_add, IEEE80211_MLD_MAX_NUM_LINKS) {
+ link_sta = rcu_dereference_protected(info->link[link_id],
+ lockdep_is_held(&local->sta_mtx));
+ ieee80211_link_sta_debugfs_drv_add(link_sta);
+ }
+
+ return 0;
+}