From patchwork Sun Feb 16 09:42:45 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miri Korenblit X-Patchwork-Id: 13976465 X-Patchwork-Delegate: johannes@sipsolutions.net Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8B90E18DB32 for ; Sun, 16 Feb 2025 09:43:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739699026; cv=none; b=LggZbv4ZPQl5JyNake4oGs9RDudK43t6piI05uZTZwmZbEf2O+g5tdJrT5z4GXTuoTdu0t8bixFUsqSZKVEKxfvO/+h9wNJYb/OXgOA8PgjmAqBcnIjKjGAo3IK45bxzJXq2PZ6V9CWPrtW4mIxUtaxasSaW0oBHT+S6WJOf2bE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739699026; c=relaxed/simple; bh=AYQ+zzrVGucofk4cdqrD6e4Yt8ZE6YuE/VbPBK3YnqI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=oMBqzsKTrsTRauFa+cWJHc133UUY1wv/nXevuYR6Ni+4JaTBz03uKodaAKPnDwrC7tIy0LQc1o+STHxf2T3oLyiwTv6NAS3RaK2g5EOb2cVP6Mn+d6rAqqE3L6u3xsISWsl5N9HICLM/MZg3Qbgan81+MD0ET++BlKmT+a9loCE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=JIeoNxwr; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="JIeoNxwr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739699024; x=1771235024; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=AYQ+zzrVGucofk4cdqrD6e4Yt8ZE6YuE/VbPBK3YnqI=; b=JIeoNxwrTBBn6sMrieiqDw/UYC1tScsIyf8+b2+J1OWyi4MJkzU4gqSf qzP1dWygET4G92suz1pRciblpDZtVvh/y+T+5ZXYQs4K3RCh5zsp4jQyc aJyzhJdMzis0KxFgIFisZ/Oc9EUsIhe33wAXPEAWr8kVSuLq5I4DR9i64 69gvCiWpJHkhXcBpvj8DLwCZjIUBC+71GBLlScZZWAFc1k3ergO9Br6Pw cvxt8NX2MDWtwVBhYSWcr5yS2f/sM/2gIvVqHB8vMy7+I71uldLtVUQA7 xVaktraadJt1Kg8mC6Gs+n2AjOyYEPq1dvDMRyXijboJDxHuf3Id5uWeN Q==; X-CSE-ConnectionGUID: HQfCSA8wQ+iXgjedtJl81w== X-CSE-MsgGUID: Aea5oo/tTiCX1Ld9mLopDg== X-IronPort-AV: E=McAfee;i="6700,10204,11346"; a="40323366" X-IronPort-AV: E=Sophos;i="6.13,290,1732608000"; d="scan'208";a="40323366" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2025 01:43:43 -0800 X-CSE-ConnectionGUID: CZO7O202Ry6FLs5F+RQIUg== X-CSE-MsgGUID: i9xwSUDAS3mz6GzGLlJUKA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,199,1725346800"; d="scan'208";a="118785220" Received: from weis0040.iil.intel.com ([10.12.217.108]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2025 01:43:42 -0800 From: Miri Korenblit To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org Subject: [PATCH 06/42] wifi: iwlwifi: mld: add file debugfs.h/c Date: Sun, 16 Feb 2025 11:42:45 +0200 Message-Id: <20250216111648.483434e60617.I0b7cf709fb85564fd7b29765e980f71f10136e40@changeid> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250216094321.537988-1-miriam.rachel.korenblit@intel.com> References: <20250216094321.537988-1-miriam.rachel.korenblit@intel.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Israel (74) Limited this file is handling debugfs Signed-off-by: Miri Korenblit --- .../net/wireless/intel/iwlwifi/mld/debugfs.c | 826 ++++++++++++++++++ .../net/wireless/intel/iwlwifi/mld/debugfs.h | 200 +++++ 2 files changed, 1026 insertions(+) create mode 100644 drivers/net/wireless/intel/iwlwifi/mld/debugfs.c create mode 100644 drivers/net/wireless/intel/iwlwifi/mld/debugfs.h diff --git a/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c new file mode 100644 index 000000000000..e21fe9ff48b3 --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c @@ -0,0 +1,826 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright (C) 2024-2025 Intel Corporation + */ + +#include "mld.h" +#include "debugfs.h" +#include "iwl-io.h" +#include "hcmd.h" +#include "iface.h" +#include "sta.h" +#include "tlc.h" +#include "power.h" +#include "notif.h" +#include "ap.h" +#include "iwl-utils.h" +#ifdef CONFIG_THERMAL +#include "thermal.h" +#endif + +#include "fw/api/rs.h" +#include "fw/api/dhc.h" +#include "fw/api/rfi.h" + +#define MLD_DEBUGFS_READ_FILE_OPS(name, bufsz) \ + _MLD_DEBUGFS_READ_FILE_OPS(name, bufsz, struct iwl_mld) + +#define MLD_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \ + debugfs_create_file(alias, mode, parent, mld, \ + &iwl_dbgfs_##name##_ops); \ + } while (0) +#define MLD_DEBUGFS_ADD_FILE(name, parent, mode) \ + MLD_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode) + +static bool iwl_mld_dbgfs_fw_cmd_disabled(struct iwl_mld *mld) +{ +#ifdef CONFIG_PM_SLEEP + return !mld->fw_status.running || mld->fw_status.in_d3; +#else + return !mld->fw_status.running; +#endif /* CONFIG_PM_SLEEP */ +} + +static ssize_t iwl_dbgfs_fw_dbg_clear_write(struct iwl_mld *mld, + char *buf, size_t count) +{ + /* If the firmware is not running, silently succeed since there is + * no data to clear. + */ + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return 0; + + iwl_fw_dbg_clear_monitor_buf(&mld->fwrt); + + return count; +} + +static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mld *mld, char *buf, + size_t count) +{ + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + IWL_ERR(mld, "Triggering an NMI from debugfs\n"); + + if (count == 6 && !strcmp(buf, "nolog\n")) + mld->fw_status.do_not_dump_once = true; + + iwl_force_nmi(mld->trans); + + return count; +} + +static ssize_t iwl_dbgfs_fw_restart_write(struct iwl_mld *mld, char *buf, + size_t count) +{ + int __maybe_unused ret; + + if (!iwlwifi_mod_params.fw_restart) + return -EPERM; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + if (count == 6 && !strcmp(buf, "nolog\n")) { + mld->fw_status.do_not_dump_once = true; + set_bit(STATUS_SUPPRESS_CMD_ERROR_ONCE, &mld->trans->status); + } + + /* take the return value to make compiler happy - it will + * fail anyway + */ + ret = iwl_mld_send_cmd_empty(mld, WIDE_ID(LONG_GROUP, REPLY_ERROR)); + + return count; +} + +static ssize_t iwl_dbgfs_send_echo_cmd_write(struct iwl_mld *mld, char *buf, + size_t count) +{ + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + return iwl_mld_send_cmd_empty(mld, ECHO_CMD) ?: count; +} + +struct iwl_mld_sniffer_apply { + struct iwl_mld *mld; + const u8 *bssid; + u16 aid; +}; + +static bool iwl_mld_sniffer_apply(struct iwl_notif_wait_data *notif_data, + struct iwl_rx_packet *pkt, void *data) +{ + struct iwl_mld_sniffer_apply *apply = data; + + apply->mld->monitor.cur_aid = cpu_to_le16(apply->aid); + memcpy(apply->mld->monitor.cur_bssid, apply->bssid, + sizeof(apply->mld->monitor.cur_bssid)); + + return true; +} + +static ssize_t +iwl_dbgfs_he_sniffer_params_write(struct iwl_mld *mld, char *buf, + size_t count) +{ + struct iwl_notification_wait wait; + struct iwl_he_monitor_cmd he_mon_cmd = {}; + struct iwl_mld_sniffer_apply apply = { + .mld = mld, + }; + u16 wait_cmds[] = { + WIDE_ID(DATA_PATH_GROUP, HE_AIR_SNIFFER_CONFIG_CMD), + }; + u32 aid; + int ret; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + if (!mld->monitor.on) + return -ENODEV; + + ret = sscanf(buf, "%x %2hhx:%2hhx:%2hhx:%2hhx:%2hhx:%2hhx", &aid, + &he_mon_cmd.bssid[0], &he_mon_cmd.bssid[1], + &he_mon_cmd.bssid[2], &he_mon_cmd.bssid[3], + &he_mon_cmd.bssid[4], &he_mon_cmd.bssid[5]); + if (ret != 7) + return -EINVAL; + + he_mon_cmd.aid = cpu_to_le16(aid); + + apply.aid = aid; + apply.bssid = (void *)he_mon_cmd.bssid; + + /* Use the notification waiter to get our function triggered + * in sequence with other RX. This ensures that frames we get + * on the RX queue _before_ the new configuration is applied + * still have mld->cur_aid pointing to the old AID, and that + * frames on the RX queue _after_ the firmware processed the + * new configuration (and sent the response, synchronously) + * get mld->cur_aid correctly set to the new AID. + */ + iwl_init_notification_wait(&mld->notif_wait, &wait, + wait_cmds, ARRAY_SIZE(wait_cmds), + iwl_mld_sniffer_apply, &apply); + + ret = iwl_mld_send_cmd_pdu(mld, + WIDE_ID(DATA_PATH_GROUP, + HE_AIR_SNIFFER_CONFIG_CMD), + &he_mon_cmd); + + /* no need to really wait, we already did anyway */ + iwl_remove_notification(&mld->notif_wait, &wait); + + return ret ?: count; +} + +static ssize_t +iwl_dbgfs_he_sniffer_params_read(struct iwl_mld *mld, size_t count, + char *buf) +{ + return scnprintf(buf, count, + "%d %02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx\n", + le16_to_cpu(mld->monitor.cur_aid), + mld->monitor.cur_bssid[0], mld->monitor.cur_bssid[1], + mld->monitor.cur_bssid[2], mld->monitor.cur_bssid[3], + mld->monitor.cur_bssid[4], mld->monitor.cur_bssid[5]); +} + +/* The size computation is as follows: + * each number needs at most 3 characters, number of rows is the size of + * the table; So, need 5 chars for the "freq: " part and each tuple afterwards + * needs 6 characters for numbers and 5 for the punctuation around. 32 bytes + * for feature support message. + */ +#define IWL_RFI_DDR_BUF_SIZE (IWL_RFI_DDR_LUT_INSTALLED_SIZE *\ + (5 + IWL_RFI_DDR_LUT_ENTRY_CHANNELS_NUM *\ + (6 + 5)) + 32) +#define IWL_RFI_DLVR_BUF_SIZE (IWL_RFI_DLVR_LUT_INSTALLED_SIZE *\ + (5 + IWL_RFI_DLVR_LUT_ENTRY_CHANNELS_NUM *\ + (6 + 5)) + 32) +#define IWL_RFI_DESENSE_BUF_SIZE IWL_RFI_DDR_BUF_SIZE + +/* Extra 32 for "DDR and DLVR table" message */ +#define IWL_RFI_BUF_SIZE (IWL_RFI_DDR_BUF_SIZE + IWL_RFI_DLVR_BUF_SIZE +\ + IWL_RFI_DESENSE_BUF_SIZE + 32) + +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(fw_nmi, 10); +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(fw_restart, 10); +WIPHY_DEBUGFS_READ_WRITE_FILE_OPS_MLD(he_sniffer_params, 32); +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(fw_dbg_clear, 10); +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(send_echo_cmd, 8); + +static ssize_t iwl_dbgfs_wifi_6e_enable_read(struct iwl_mld *mld, + size_t count, u8 *buf) +{ + int err; + u32 value; + + err = iwl_bios_get_dsm(&mld->fwrt, DSM_FUNC_ENABLE_6E, &value); + if (err) + return err; + + return scnprintf(buf, count, "0x%08x\n", value); +} + +MLD_DEBUGFS_READ_FILE_OPS(wifi_6e_enable, 64); + +static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mld *mld, + char *buf, size_t count) +{ + struct iwl_op_mode *opmode = container_of((void *)mld, + struct iwl_op_mode, + op_mode_specific); + struct iwl_rx_cmd_buffer rxb = {}; + struct iwl_rx_packet *pkt; + int n_bytes = count / 2; + int ret = -EINVAL; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + rxb._page = alloc_pages(GFP_KERNEL, 0); + if (!rxb._page) + return -ENOMEM; + pkt = rxb_addr(&rxb); + + ret = hex2bin(page_address(rxb._page), buf, n_bytes); + if (ret) + goto out; + + /* avoid invalid memory access and malformed packet */ + if (n_bytes < sizeof(*pkt) || + n_bytes != sizeof(*pkt) + iwl_rx_packet_payload_len(pkt)) + goto out; + + local_bh_disable(); + iwl_mld_rx(opmode, NULL, &rxb); + local_bh_enable(); + ret = 0; + +out: + iwl_free_rxb(&rxb); + + return ret ?: count; +} + +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(inject_packet, 512); + +#ifdef CONFIG_THERMAL + +static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mld *mld, + char *buf, size_t count) +{ + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + return iwl_mld_config_ctdp(mld, mld->cooling_dev.cur_state, + CTDP_CMD_OPERATION_STOP) ? : count; +} + +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(stop_ctdp, 8); + +static ssize_t iwl_dbgfs_start_ctdp_write(struct iwl_mld *mld, + char *buf, size_t count) +{ + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + return iwl_mld_config_ctdp(mld, mld->cooling_dev.cur_state, + CTDP_CMD_OPERATION_START) ? : count; +} + +WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(start_ctdp, 8); + +#endif /* CONFIG_THERMAL */ + +void +iwl_mld_add_debugfs_files(struct iwl_mld *mld, struct dentry *debugfs_dir) +{ + /* Add debugfs files here */ + + MLD_DEBUGFS_ADD_FILE(fw_nmi, debugfs_dir, 0200); + MLD_DEBUGFS_ADD_FILE(fw_restart, debugfs_dir, 0200); + MLD_DEBUGFS_ADD_FILE(wifi_6e_enable, debugfs_dir, 0400); + MLD_DEBUGFS_ADD_FILE(he_sniffer_params, debugfs_dir, 0600); + MLD_DEBUGFS_ADD_FILE(fw_dbg_clear, debugfs_dir, 0200); + MLD_DEBUGFS_ADD_FILE(send_echo_cmd, debugfs_dir, 0200); +#ifdef CONFIG_THERMAL + MLD_DEBUGFS_ADD_FILE(start_ctdp, debugfs_dir, 0200); + MLD_DEBUGFS_ADD_FILE(stop_ctdp, debugfs_dir, 0200); +#endif + MLD_DEBUGFS_ADD_FILE(inject_packet, debugfs_dir, 0200); + + /* Create a symlink with mac80211. It will be removed when mac80211 + * exits (before the opmode exits which removes the target.) + */ + if (!IS_ERR(debugfs_dir)) { + char buf[100]; + + snprintf(buf, 100, "../../%pd2", debugfs_dir->d_parent); + debugfs_create_symlink("iwlwifi", mld->wiphy->debugfsdir, + buf); + } +} + +#define VIF_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ + WIPHY_DEBUGFS_WRITE_FILE_OPS(vif_##name, bufsz, vif) + +#define VIF_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \ + IEEE80211_WIPHY_DEBUGFS_READ_WRITE_FILE_OPS(vif_##name, bufsz, vif) \ + +#define VIF_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \ + debugfs_create_file(alias, mode, parent, vif, \ + &iwl_dbgfs_vif_##name##_ops); \ + } while (0) +#define VIF_DEBUGFS_ADD_FILE(name, parent, mode) \ + VIF_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode) + +static ssize_t iwl_dbgfs_vif_bf_params_write(struct iwl_mld *mld, char *buf, + size_t count, void *data) +{ + struct ieee80211_vif *vif = data; + struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); + int link_id = vif->active_links ? __ffs(vif->active_links) : 0; + struct ieee80211_bss_conf *link_conf; + int val; + + if (!strncmp("bf_enable_beacon_filter=", buf, 24)) { + if (sscanf(buf + 24, "%d", &val) != 1) + return -EINVAL; + } else { + return -EINVAL; + } + + if (val != 0 && val != 1) + return -EINVAL; + + link_conf = link_conf_dereference_protected(vif, link_id); + if (WARN_ON(!link_conf)) + return -ENODEV; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + mld_vif->disable_bf = !val; + + if (val) + return iwl_mld_enable_beacon_filter(mld, link_conf, + false) ?: count; + else + return iwl_mld_disable_beacon_filter(mld, vif) ?: count; +} + +static ssize_t iwl_dbgfs_vif_pm_params_write(struct iwl_mld *mld, + char *buf, + size_t count, void *data) +{ + struct ieee80211_vif *vif = data; + struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); + int val; + + if (!strncmp("use_ps_poll=", buf, 12)) { + if (sscanf(buf + 12, "%d", &val) != 1) + return -EINVAL; + } else { + return -EINVAL; + } + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + mld_vif->use_ps_poll = val; + + return iwl_mld_update_mac_power(mld, vif, false) ?: count; +} + +static ssize_t iwl_dbgfs_vif_low_latency_write(struct iwl_mld *mld, + char *buf, size_t count, + void *data) +{ + struct ieee80211_vif *vif = data; + u8 value; + int ret; + + ret = kstrtou8(buf, 0, &value); + if (ret) + return ret; + + if (value > 1) + return -EINVAL; + + iwl_mld_vif_update_low_latency(mld, vif, value, LOW_LATENCY_DEBUGFS); + + return count; +} + +static ssize_t iwl_dbgfs_vif_low_latency_read(struct ieee80211_vif *vif, + size_t count, char *buf) +{ + struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); + char format[] = "traffic=%d\ndbgfs=%d\nvif_type=%d\nactual=%d\n"; + u8 ll_causes; + + if (WARN_ON(count < sizeof(format))) + return -EINVAL; + + ll_causes = READ_ONCE(mld_vif->low_latency_causes); + + /* all values in format are boolean so the size of format is enough + * for holding the result string + */ + return scnprintf(buf, count, format, + !!(ll_causes & LOW_LATENCY_TRAFFIC), + !!(ll_causes & LOW_LATENCY_DEBUGFS), + !!(ll_causes & LOW_LATENCY_VIF_TYPE), + !!(ll_causes)); +} + +VIF_DEBUGFS_WRITE_FILE_OPS(pm_params, 32); +VIF_DEBUGFS_WRITE_FILE_OPS(bf_params, 32); +VIF_DEBUGFS_READ_WRITE_FILE_OPS(low_latency, 45); + +static int +_iwl_dbgfs_inject_beacon_ie(struct iwl_mld *mld, struct ieee80211_vif *vif, + char *bin, ssize_t len, + bool restore) +{ + struct iwl_mld_vif *mld_vif; + struct iwl_mld_link *mld_link; + struct iwl_mac_beacon_cmd beacon_cmd = {}; + int n_bytes = len / 2; + + /* Element len should be represented by u8 */ + if (n_bytes >= U8_MAX) + return -EINVAL; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + if (!vif) + return -EINVAL; + + mld_vif = iwl_mld_vif_from_mac80211(vif); + mld_vif->beacon_inject_active = true; + mld->hw->extra_beacon_tailroom = n_bytes; + + for_each_mld_vif_valid_link(mld_vif, mld_link) { + u32 offset; + struct ieee80211_tx_info *info; + struct ieee80211_bss_conf *link_conf = + link_conf_dereference_protected(vif, link_id); + struct ieee80211_chanctx_conf *ctx = + wiphy_dereference(mld->wiphy, link_conf->chanctx_conf); + struct sk_buff *beacon = + ieee80211_beacon_get_template(mld->hw, vif, + NULL, link_id); + + if (!beacon) + return -EINVAL; + + if (!restore && (WARN_ON(!n_bytes || !bin) || + hex2bin(skb_put_zero(beacon, n_bytes), + bin, n_bytes))) { + dev_kfree_skb(beacon); + return -EINVAL; + } + + info = IEEE80211_SKB_CB(beacon); + + beacon_cmd.flags = + cpu_to_le16(iwl_mld_get_rate_flags(mld, info, vif, + link_conf, + ctx->def.chan->band)); + beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); + beacon_cmd.link_id = + cpu_to_le32(mld_link->fw_id); + + iwl_mld_set_tim_idx(mld, &beacon_cmd.tim_idx, + beacon->data, beacon->len); + + offset = iwl_find_ie_offset(beacon->data, + WLAN_EID_S1G_TWT, + beacon->len); + + beacon_cmd.btwt_offset = cpu_to_le32(offset); + + iwl_mld_send_beacon_template_cmd(mld, beacon, &beacon_cmd); + dev_kfree_skb(beacon); + } + + if (restore) + mld_vif->beacon_inject_active = false; + + return 0; +} + +static ssize_t +iwl_dbgfs_vif_inject_beacon_ie_write(struct iwl_mld *mld, + char *buf, size_t count, + void *data) +{ + struct ieee80211_vif *vif = data; + int ret = _iwl_dbgfs_inject_beacon_ie(mld, vif, buf, + count, false); + + mld->hw->extra_beacon_tailroom = 0; + return ret ?: count; +} + +VIF_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie, 512); + +static ssize_t +iwl_dbgfs_vif_inject_beacon_ie_restore_write(struct iwl_mld *mld, + char *buf, + size_t count, + void *data) +{ + struct ieee80211_vif *vif = data; + int ret = _iwl_dbgfs_inject_beacon_ie(mld, vif, NULL, + 0, true); + + mld->hw->extra_beacon_tailroom = 0; + return ret ?: count; +} + +VIF_DEBUGFS_WRITE_FILE_OPS(inject_beacon_ie_restore, 512); + +static ssize_t +iwl_dbgfs_vif_twt_setup_write(struct iwl_mld *mld, char *buf, size_t count, + void *data) +{ + struct iwl_host_cmd hcmd = { + .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, DEBUG_HOST_COMMAND), + }; + struct ieee80211_vif *vif = data; + struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); + struct iwl_dhc_twt_operation *dhc_twt_cmd; + struct iwl_dhc_cmd *cmd __free(kfree); + u64 target_wake_time; + u32 twt_operation, interval_exp, interval_mantissa, min_wake_duration; + u8 trigger, flow_type, flow_id, protection, tenth_param; + u8 twt_request = 1, broadcast = 0; + int ret; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + ret = sscanf(buf, "%u %llu %u %u %u %hhu %hhu %hhu %hhu %hhu", + &twt_operation, &target_wake_time, &interval_exp, + &interval_mantissa, &min_wake_duration, &trigger, + &flow_type, &flow_id, &protection, &tenth_param); + + /* the new twt_request parameter is optional for station */ + if ((ret != 9 && ret != 10) || + (ret == 10 && vif->type != NL80211_IFTYPE_STATION && + tenth_param == 1)) + return -EINVAL; + + /* The 10th parameter: + * In STA mode - the TWT type (broadcast or individual) + * In AP mode - the role (0 responder, 2 unsolicited) + */ + if (ret == 10) { + if (vif->type == NL80211_IFTYPE_STATION) + broadcast = tenth_param; + else + twt_request = tenth_param; + } + + cmd = kzalloc(sizeof(*cmd) + sizeof(*dhc_twt_cmd), GFP_KERNEL); + if (!cmd) + return -ENOMEM; + + dhc_twt_cmd = (void *)cmd->data; + dhc_twt_cmd->mac_id = cpu_to_le32(mld_vif->fw_id); + dhc_twt_cmd->twt_operation = cpu_to_le32(twt_operation); + dhc_twt_cmd->target_wake_time = cpu_to_le64(target_wake_time); + dhc_twt_cmd->interval_exp = cpu_to_le32(interval_exp); + dhc_twt_cmd->interval_mantissa = cpu_to_le32(interval_mantissa); + dhc_twt_cmd->min_wake_duration = cpu_to_le32(min_wake_duration); + dhc_twt_cmd->trigger = trigger; + dhc_twt_cmd->flow_type = flow_type; + dhc_twt_cmd->flow_id = flow_id; + dhc_twt_cmd->protection = protection; + dhc_twt_cmd->twt_request = twt_request; + dhc_twt_cmd->negotiation_type = broadcast ? 3 : 0; + + cmd->length = cpu_to_le32(sizeof(*dhc_twt_cmd) >> 2); + cmd->index_and_mask = + cpu_to_le32(DHC_TABLE_INTEGRATION | DHC_TARGET_UMAC | + DHC_INT_UMAC_TWT_OPERATION); + + hcmd.len[0] = sizeof(*cmd) + sizeof(*dhc_twt_cmd); + hcmd.data[0] = cmd; + + ret = iwl_mld_send_cmd(mld, &hcmd); + + return ret ?: count; +} + +VIF_DEBUGFS_WRITE_FILE_OPS(twt_setup, 256); + +static ssize_t +iwl_dbgfs_vif_twt_operation_write(struct iwl_mld *mld, char *buf, size_t count, + void *data) +{ + struct ieee80211_vif *vif = data; + struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); + struct iwl_twt_operation_cmd twt_cmd = {}; + int link_id = vif->active_links ? __ffs(vif->active_links) : 0; + struct iwl_mld_link *mld_link = iwl_mld_link_dereference_check(mld_vif, + link_id); + int ret; + + if (WARN_ON(!mld_link)) + return -ENODEV; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + if (hweight16(vif->active_links) > 1) + return -EOPNOTSUPP; + + ret = sscanf(buf, "%u %llu %u %u %u %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu %hhu", + &twt_cmd.twt_operation, &twt_cmd.target_wake_time, + &twt_cmd.interval_exponent, &twt_cmd.interval_mantissa, + &twt_cmd.minimum_wake_duration, &twt_cmd.trigger, + &twt_cmd.flow_type, &twt_cmd.flow_id, + &twt_cmd.twt_protection, &twt_cmd.ndp_paging_indicator, + &twt_cmd.responder_pm_mode, &twt_cmd.negotiation_type, + &twt_cmd.twt_request, &twt_cmd.implicit, + &twt_cmd.twt_group_assignment, &twt_cmd.twt_channel, + &twt_cmd.restricted_info_present, &twt_cmd.dl_bitmap_valid, + &twt_cmd.ul_bitmap_valid, &twt_cmd.dl_tid_bitmap, + &twt_cmd.ul_tid_bitmap); + + if (ret != 21) + return -EINVAL; + + twt_cmd.link_id = cpu_to_le32(mld_link->fw_id); + + ret = iwl_mld_send_cmd_pdu(mld, + WIDE_ID(MAC_CONF_GROUP, TWT_OPERATION_CMD), + &twt_cmd); + return ret ?: count; +} + +VIF_DEBUGFS_WRITE_FILE_OPS(twt_operation, 256); + +void iwl_mld_add_vif_debugfs(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct dentry *mld_vif_dbgfs = + debugfs_create_dir("iwlmld", vif->debugfs_dir); + struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif); + struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); + char target[3 * 3 + 11 + (NL80211_WIPHY_NAME_MAXLEN + 1) + + (7 + IFNAMSIZ + 1) + 6 + 1]; + char name[7 + IFNAMSIZ + 1]; + + /* Create symlink for convenience pointing to interface specific + * debugfs entries for the driver. For example, under + * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmld/ + * find + * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmld/ + */ + snprintf(name, sizeof(name), "%pd", vif->debugfs_dir); + snprintf(target, sizeof(target), "../../../%pd3/iwlmld", + vif->debugfs_dir); + mld_vif->dbgfs_slink = + debugfs_create_symlink(name, mld->debugfs_dir, target); + + if (iwlmld_mod_params.power_scheme != IWL_POWER_SCHEME_CAM && + vif->type == NL80211_IFTYPE_STATION) { + VIF_DEBUGFS_ADD_FILE(pm_params, mld_vif_dbgfs, 0200); + VIF_DEBUGFS_ADD_FILE(bf_params, mld_vif_dbgfs, 0200); + } + + if (vif->type == NL80211_IFTYPE_AP) { + VIF_DEBUGFS_ADD_FILE(inject_beacon_ie, mld_vif_dbgfs, 0200); + VIF_DEBUGFS_ADD_FILE(inject_beacon_ie_restore, + mld_vif_dbgfs, 0200); + } + + VIF_DEBUGFS_ADD_FILE(low_latency, mld_vif_dbgfs, 0600); + VIF_DEBUGFS_ADD_FILE(twt_setup, mld_vif_dbgfs, 0200); + VIF_DEBUGFS_ADD_FILE(twt_operation, mld_vif_dbgfs, 0200); +} + +#define LINK_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ + WIPHY_DEBUGFS_WRITE_FILE_OPS(link_##name, bufsz, bss_conf) + +#define LINK_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \ + debugfs_create_file(alias, mode, parent, link_conf, \ + &iwl_dbgfs_link_##name##_ops); \ + } while (0) +#define LINK_DEBUGFS_ADD_FILE(name, parent, mode) \ + LINK_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode) + +void iwl_mld_add_link_debugfs(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *link_conf, + struct dentry *dir) +{ + struct dentry *mld_link_dir; + + mld_link_dir = debugfs_lookup("iwlmld", dir); + + /* For non-MLO vifs, the dir of deflink is the same as the vif's one. + * so if iwlmld dir already exists, this means that this is deflink. + * If not, this is a per-link dir of a MLO vif, add in it the iwlmld + * dir. + */ + if (!mld_link_dir) + mld_link_dir = debugfs_create_dir("iwlmld", dir); +} + +static ssize_t iwl_dbgfs_fixed_rate_write(struct iwl_mld *mld, char *buf, + size_t count, void *data) +{ + struct ieee80211_link_sta *link_sta = data; + struct iwl_mld_link_sta *mld_link_sta; + u32 rate; + u32 partial = false; + char pretty_rate[100]; + int ret; + u8 fw_sta_id; + + mld_link_sta = iwl_mld_link_sta_from_mac80211(link_sta); + if (WARN_ON(!mld_link_sta)) + return -EINVAL; + + fw_sta_id = mld_link_sta->fw_id; + + if (sscanf(buf, "%i %i", &rate, &partial) == 0) + return -EINVAL; + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + ret = iwl_mld_send_tlc_dhc(mld, fw_sta_id, + partial ? IWL_TLC_DEBUG_PARTIAL_FIXED_RATE : + IWL_TLC_DEBUG_FIXED_RATE, + rate); + + rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate), rate); + + IWL_DEBUG_RATE(mld, "sta_id %d rate %s partial: %d, ret:%d\n", + fw_sta_id, pretty_rate, partial, ret); + + return ret ? : count; +} + +static ssize_t iwl_dbgfs_tlc_dhc_write(struct iwl_mld *mld, char *buf, + size_t count, void *data) +{ + struct ieee80211_link_sta *link_sta = data; + struct iwl_mld_link_sta *mld_link_sta; + u32 type, value; + int ret; + u8 fw_sta_id; + + mld_link_sta = iwl_mld_link_sta_from_mac80211(link_sta); + if (WARN_ON(!mld_link_sta)) + return -EINVAL; + + fw_sta_id = mld_link_sta->fw_id; + + if (sscanf(buf, "%i %i", &type, &value) != 2) { + IWL_DEBUG_RATE(mld, "usage \n"); + return -EINVAL; + } + + if (iwl_mld_dbgfs_fw_cmd_disabled(mld)) + return -EIO; + + ret = iwl_mld_send_tlc_dhc(mld, fw_sta_id, type, value); + + return ret ? : count; +} + +#define LINK_STA_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \ + debugfs_create_file(alias, mode, parent, link_sta, \ + &iwl_dbgfs_##name##_ops); \ + } while (0) +#define LINK_STA_DEBUGFS_ADD_FILE(name, parent, mode) \ + LINK_STA_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode) + +#define LINK_STA_WIPHY_DEBUGFS_WRITE_OPS(name, bufsz) \ + WIPHY_DEBUGFS_WRITE_FILE_OPS(name, bufsz, link_sta) + +LINK_STA_WIPHY_DEBUGFS_WRITE_OPS(tlc_dhc, 64); +LINK_STA_WIPHY_DEBUGFS_WRITE_OPS(fixed_rate, 64); + +void iwl_mld_add_link_sta_debugfs(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_link_sta *link_sta, + struct dentry *dir) +{ + LINK_STA_DEBUGFS_ADD_FILE(fixed_rate, dir, 0200); + LINK_STA_DEBUGFS_ADD_FILE(tlc_dhc, dir, 0200); +} diff --git a/drivers/net/wireless/intel/iwlwifi/mld/debugfs.h b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.h new file mode 100644 index 000000000000..04c536db8b16 --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.h @@ -0,0 +1,200 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright (C) 2024 Intel Corporation + */ +#include "iface.h" +#include "sta.h" + +#define MLD_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \ +struct dbgfs_##name##_data { \ + argtype *arg; \ + bool read_done; \ + ssize_t rlen; \ + char buf[buflen]; \ +}; \ +static int _iwl_dbgfs_##name##_open(struct inode *inode, \ + struct file *file) \ +{ \ + struct dbgfs_##name##_data *data; \ + \ + if ((file->f_flags & O_ACCMODE) == O_RDWR) \ + return -EOPNOTSUPP; \ + \ + data = kzalloc(sizeof(*data), GFP_KERNEL); \ + if (!data) \ + return -ENOMEM; \ + \ + data->read_done = false; \ + data->arg = inode->i_private; \ + file->private_data = data; \ + \ + return 0; \ +} + +#define MLD_DEBUGFS_READ_WRAPPER(name) \ +static ssize_t _iwl_dbgfs_##name##_read(struct file *file, \ + char __user *user_buf, \ + size_t count, loff_t *ppos) \ +{ \ + struct dbgfs_##name##_data *data = file->private_data; \ + \ + if (!data->read_done) { \ + data->read_done = true; \ + data->rlen = iwl_dbgfs_##name##_read(data->arg, \ + sizeof(data->buf),\ + data->buf); \ + } \ + \ + if (data->rlen < 0) \ + return data->rlen; \ + return simple_read_from_buffer(user_buf, count, ppos, \ + data->buf, data->rlen); \ +} + +static int _iwl_dbgfs_release(struct inode *inode, struct file *file) +{ + kfree(file->private_data); + return 0; +} + +#define _MLD_DEBUGFS_READ_FILE_OPS(name, buflen, argtype) \ +MLD_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \ +MLD_DEBUGFS_READ_WRAPPER(name) \ +static const struct file_operations iwl_dbgfs_##name##_ops = { \ + .read = _iwl_dbgfs_##name##_read, \ + .open = _iwl_dbgfs_##name##_open, \ + .llseek = generic_file_llseek, \ + .release = _iwl_dbgfs_release, \ +} + +#define WIPHY_DEBUGFS_HANDLER_WRAPPER(name) \ +static ssize_t iwl_dbgfs_##name##_write_handler(struct wiphy *wiphy, \ + struct file *file, char *buf, \ + size_t count, void *data) \ +{ \ + struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); \ + struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); \ + return iwl_dbgfs_##name##_write(mld, buf, count, data); \ +} + +static inline struct iwl_mld * +iwl_mld_from_link_sta(struct ieee80211_link_sta *link_sta) +{ + struct ieee80211_vif *vif = + iwl_mld_sta_from_mac80211(link_sta->sta)->vif; + return iwl_mld_vif_from_mac80211(vif)->mld; +} + +static inline struct iwl_mld * +iwl_mld_from_bss_conf(struct ieee80211_bss_conf *link) +{ + return iwl_mld_vif_from_mac80211(link->vif)->mld; +} + +static inline struct iwl_mld *iwl_mld_from_vif(struct ieee80211_vif *vif) +{ + return iwl_mld_vif_from_mac80211(vif)->mld; +} + +#define WIPHY_DEBUGFS_WRITE_WRAPPER(name, bufsz, objtype) \ +WIPHY_DEBUGFS_HANDLER_WRAPPER(name) \ +static ssize_t __iwl_dbgfs_##name##_write(struct file *file, \ + const char __user *user_buf, \ + size_t count, loff_t *ppos) \ +{ \ + struct ieee80211_##objtype *arg = file->private_data; \ + struct iwl_mld *mld = iwl_mld_from_##objtype(arg); \ + char buf[bufsz] = {}; \ + \ + return wiphy_locked_debugfs_write(mld->wiphy, file, \ + buf, sizeof(buf), \ + user_buf, count, \ + iwl_dbgfs_##name##_write_handler, \ + arg); \ +} + +#define WIPHY_DEBUGFS_WRITE_FILE_OPS(name, bufsz, objtype) \ + WIPHY_DEBUGFS_WRITE_WRAPPER(name, bufsz, objtype) \ + static const struct file_operations iwl_dbgfs_##name##_ops = { \ + .write = __iwl_dbgfs_##name##_write, \ + .open = simple_open, \ + .llseek = generic_file_llseek, \ + } + +#define WIPHY_DEBUGFS_HANDLER_WRAPPER_MLD(name) \ +static ssize_t iwl_dbgfs_##name##_write_handler(struct wiphy *wiphy, \ + struct file *file, char *buf, \ + size_t count, void *data) \ +{ \ + struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); \ + struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw); \ + return iwl_dbgfs_##name##_write(mld, buf, count); \ +} + +#define WIPHY_DEBUGFS_WRITE_WRAPPER_MLD(name) \ +WIPHY_DEBUGFS_HANDLER_WRAPPER_MLD(name) \ +static ssize_t __iwl_dbgfs_##name##_write(struct file *file, \ + const char __user *user_buf, \ + size_t count, loff_t *ppos) \ +{ \ + struct dbgfs_##name##_data *data = file->private_data; \ + struct iwl_mld *mld = data->arg; \ + \ + return wiphy_locked_debugfs_write(mld->wiphy, file, \ + data->buf, sizeof(data->buf), \ + user_buf, count, \ + iwl_dbgfs_##name##_write_handler, \ + NULL); \ +} + +#define WIPHY_DEBUGFS_WRITE_FILE_OPS_MLD(name, bufsz) \ + MLD_DEBUGFS_OPEN_WRAPPER(name, bufsz, struct iwl_mld) \ + WIPHY_DEBUGFS_WRITE_WRAPPER_MLD(name) \ + static const struct file_operations iwl_dbgfs_##name##_ops = { \ + .write = __iwl_dbgfs_##name##_write, \ + .open = _iwl_dbgfs_##name##_open, \ + .llseek = generic_file_llseek, \ + .release = _iwl_dbgfs_release, \ + } + +#define WIPHY_DEBUGFS_READ_WRITE_FILE_OPS_MLD(name, bufsz) \ + MLD_DEBUGFS_OPEN_WRAPPER(name, bufsz, struct iwl_mld) \ + WIPHY_DEBUGFS_WRITE_WRAPPER_MLD(name) \ + MLD_DEBUGFS_READ_WRAPPER(name) \ + static const struct file_operations iwl_dbgfs_##name##_ops = { \ + .write = __iwl_dbgfs_##name##_write, \ + .read = _iwl_dbgfs_##name##_read, \ + .open = _iwl_dbgfs_##name##_open, \ + .llseek = generic_file_llseek, \ + .release = _iwl_dbgfs_release, \ + } + +#define WIPHY_DEBUGFS_WRITE_WRAPPER_IEEE80211(name, bufsz, objtype) \ +WIPHY_DEBUGFS_HANDLER_WRAPPER(name) \ +static ssize_t _iwl_dbgfs_##name##_write(struct file *file, \ + const char __user *user_buf, \ + size_t count, loff_t *ppos) \ +{ \ + struct dbgfs_##name##_data *data = file->private_data; \ + struct ieee80211_##objtype *arg = data->arg; \ + struct iwl_mld *mld = iwl_mld_from_##objtype(arg); \ + char buf[bufsz] = {}; \ + \ + return wiphy_locked_debugfs_write(mld->wiphy, file, \ + buf, sizeof(buf), \ + user_buf, count, \ + iwl_dbgfs_##name##_write_handler, \ + arg); \ +} + +#define IEEE80211_WIPHY_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, objtype) \ + MLD_DEBUGFS_OPEN_WRAPPER(name, bufsz, struct ieee80211_##objtype) \ + WIPHY_DEBUGFS_WRITE_WRAPPER_IEEE80211(name, bufsz, objtype) \ + MLD_DEBUGFS_READ_WRAPPER(name) \ + static const struct file_operations iwl_dbgfs_##name##_ops = { \ + .write = _iwl_dbgfs_##name##_write, \ + .read = _iwl_dbgfs_##name##_read, \ + .open = _iwl_dbgfs_##name##_open, \ + .llseek = generic_file_llseek, \ + .release = _iwl_dbgfs_release, \ + }