From patchwork Thu Jul 30 10:52:01 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Kondratiev X-Patchwork-Id: 6901451 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6E1709F44C for ; Thu, 30 Jul 2015 10:54:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 77FCB2056D for ; Thu, 30 Jul 2015 10:54:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 63AD320582 for ; Thu, 30 Jul 2015 10:54:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755514AbbG3Kys (ORCPT ); Thu, 30 Jul 2015 06:54:48 -0400 Received: from sabertooth02.qualcomm.com ([65.197.215.38]:64261 "EHLO sabertooth02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754873AbbG3Kyr (ORCPT ); Thu, 30 Jul 2015 06:54:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qca.qualcomm.com; i=@qca.qualcomm.com; q=dns/txt; s=qcdkim; t=1438253687; x=1469789687; h=from:cc:to:subject:date:message-id:in-reply-to: references; bh=9Zhm7G7mhLVkBIUvc5zpYQtV67c0U4TaSBM8jbKNGWc=; b=HxOYA5xGxyR0oi4e1r8ItbrGq748ILPvJRtmW0n8t4MINIfiXE3uCTSX IK/J2tZUfrbDT9ylzOTc4epTMGniwfCIqWQAPfWpi+bPwsgm3t6VzESqg TUvCoEOB9C75dj4JB13o1UvpxrXTfRywchivTsfxeduDTD+6yPw5djNW/ o=; X-IronPort-AV: E=McAfee;i="5700,7163,7877"; a="94860450" Received: from ironmsg02-r.qualcomm.com ([172.30.46.16]) by sabertooth02.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 30 Jul 2015 03:54:47 -0700 From: Vladimir Kondratiev Cc: Vladimir Kondratiev , linux-wireless@vger.kernel.org, wil6210@qca.qualcomm.com X-IronPort-AV: E=Sophos;i="5.15,576,1432623600"; d="scan'208";a="523805089" Received: from lx-wigig-72.mea.qualcomm.com ([10.18.134.58]) by ironmsg02-R.qualcomm.com with ESMTP; 30 Jul 2015 03:52:43 -0700 To: Kalle Valo Subject: [PATCH v3 13/19] wil6210: detailed statistics for Rx reorder drop Date: Thu, 30 Jul 2015 13:52:01 +0300 Message-Id: <1438253527-3372-14-git-send-email-qca_vkondrat@qca.qualcomm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1438253527-3372-1-git-send-email-qca_vkondrat@qca.qualcomm.com> References: <1438253527-3372-1-git-send-email-qca_vkondrat@qca.qualcomm.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-8.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Rx drops may be for 2 reasons: frame is old, or it is duplicate. On the debugfs "stations" entry, provide counters per reorder buffer for total frames processed, drops for these 2 reasons. Also add debug print for dropped frames. Signed-off-by: Vladimir Kondratiev --- drivers/net/wireless/ath/wil6210/debugfs.c | 6 +++++- drivers/net/wireless/ath/wil6210/rx_reorder.c | 8 ++++++-- drivers/net/wireless/ath/wil6210/wil6210.h | 15 ++++++++------- 3 files changed, 19 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/ath/wil6210/debugfs.c b/drivers/net/wireless/ath/wil6210/debugfs.c index 2651ec4..05b550f 100644 --- a/drivers/net/wireless/ath/wil6210/debugfs.c +++ b/drivers/net/wireless/ath/wil6210/debugfs.c @@ -1344,6 +1344,7 @@ static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r) { int i; u16 index = ((r->head_seq_num - r->ssn) & 0xfff) % r->buf_size; + unsigned long long drop_dup = r->drop_dup, drop_old = r->drop_old; seq_printf(s, "([%2d] %3d TU) 0x%03x [", r->buf_size, r->timeout, r->head_seq_num); @@ -1353,7 +1354,10 @@ static void wil_print_rxtid(struct seq_file *s, struct wil_tid_ampdu_rx *r) else seq_printf(s, "%c", r->reorder_buf[i] ? '*' : '_'); } - seq_printf(s, "] drop %llu last 0x%03x\n", r->drop, r->ssn_last_drop); + seq_printf(s, + "] total %llu drop %llu (dup %llu + old %llu) last 0x%03x\n", + r->total, drop_dup + drop_old, drop_dup, drop_old, + r->ssn_last_drop); } static int wil_sta_debugfs_show(struct seq_file *s, void *data) diff --git a/drivers/net/wireless/ath/wil6210/rx_reorder.c b/drivers/net/wireless/ath/wil6210/rx_reorder.c index e4ac11c..9238c1a 100644 --- a/drivers/net/wireless/ath/wil6210/rx_reorder.c +++ b/drivers/net/wireless/ath/wil6210/rx_reorder.c @@ -121,6 +121,7 @@ __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) goto out; } + r->total++; hseq = r->head_seq_num; /** Due to the race between WMI events, where BACK establishment @@ -153,7 +154,9 @@ __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) /* frame with out of date sequence number */ if (seq_less(seq, r->head_seq_num)) { r->ssn_last_drop = seq; - r->drop++; + r->drop_old++; + wil_dbg_txrx(wil, "Rx drop: old seq 0x%03x head 0x%03x\n", + seq, r->head_seq_num); dev_kfree_skb(skb); goto out; } @@ -174,7 +177,8 @@ __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) /* check if we already stored this frame */ if (r->reorder_buf[index]) { - r->drop++; + r->drop_dup++; + wil_dbg_txrx(wil, "Rx drop: dup seq 0x%03x\n", seq); dev_kfree_skb(skb); goto out; } diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index 54f1673..c722724 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -424,13 +424,12 @@ struct pci_dev; * @ssn: Starting Sequence Number expected to be aggregated. * @buf_size: buffer size for incoming A-MPDUs * @timeout: reset timer value (in TUs). + * @ssn_last_drop: SSN of the last dropped frame + * @total: total number of processed incoming frames + * @drop_dup: duplicate frames dropped for this reorder buffer + * @drop_old: old frames dropped for this reorder buffer * @dialog_token: dialog token for aggregation session - * @rcu_head: RCU head used for freeing this struct - * @drop: total frames dropped for this reorder buffer - * - * This structure's lifetime is managed by RCU, assignments to - * the array holding it must hold the aggregation mutex. - * + * @first_time: true when this buffer used 1-st time */ struct wil_tid_ampdu_rx { struct sk_buff **reorder_buf; @@ -444,7 +443,9 @@ struct wil_tid_ampdu_rx { u16 buf_size; u16 timeout; u16 ssn_last_drop; - unsigned long long drop; + unsigned long long total; /* frames processed */ + unsigned long long drop_dup; + unsigned long long drop_old; u8 dialog_token; bool first_time; /* is it 1-st time this buffer used? */ };