From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 33DEBECAAD4 for ; Mon, 29 Aug 2022 09:28:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=M5ghPQ7T0Gtwo0acr/6ZmF3fmYtYmg6gvjNDzECvUHE=; b=vjysiS/g1CbPPH0j7tUalfsV1Q Uw3/vSQYTX6X+BbdDeMx71GZ3WxCejvtwZx98wIqCrhXXslOSCHUEiOpXTIow+lqB+SMjxUZwy8G5 RuDVSLgdkhH+fLReVW8FJi8zLtrrbUb0wg52DYjy0LppEShcd4eq2NZdJdAJkVMzmzoWffJX6XIRF Ii+sygRnxPOeISIXxaFvh5+rY2T/MeqeTYi7TZf/SSWLckeEV1G0H5nGsseh68/c8LRIG3YTCGAqu OKcsU7BlBp7P3+yyqEfyLFpc/wmYjGp5M23VTbf2YJ9ADvum15zUImPPDoCAhzhacO3q2sL2/rro0 x+u6Py6Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSb4f-006jSq-Qv; Mon, 29 Aug 2022 09:28:53 +0000 Received: from smtp-out2.suse.de ([195.135.220.29]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSb4X-006jNI-Lk for linux-nvme@lists.infradead.org; Mon, 29 Aug 2022 09:28:47 +0000 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 388BC1F390; Mon, 29 Aug 2022 09:28:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1661765324; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=M5ghPQ7T0Gtwo0acr/6ZmF3fmYtYmg6gvjNDzECvUHE=; b=0Q+dqq1O2kE0VUtcpNL8ZVqbpaDnkNgowkS9KujfYB7y/nLYNEaX3f3zQBbLRXSlr46643 IZNM2onmcAimuPIZGQrFqIOwzlwdiuGzAsaVMeRqynBQEQCrglMX0KMwDl4Z/JDRDKUsSw HDQAa3SgCZekxG+ceVqJThuScrtMsic= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1661765324; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=M5ghPQ7T0Gtwo0acr/6ZmF3fmYtYmg6gvjNDzECvUHE=; b=xuBHZuYmE8dNve6gHyRVrOCm66iSF1Js0k14J7Ro/8AneXNIdRRAj+qsHME6V29y5uLlwl V2FA75bDLUALdyAw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 2916D1352A; Mon, 29 Aug 2022 09:28:44 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id MH/gCcyGDGPzKQAAMHmgww (envelope-from ); Mon, 29 Aug 2022 09:28:44 +0000 From: Daniel Wagner To: linux-nvme@lists.infradead.org Cc: Sagi Grimberg , Hannes Reinecke , Chao Leng , Daniel Wagner Subject: [PATCH v4 1/3] nvmet: Expose max queues to configfs Date: Mon, 29 Aug 2022 11:28:39 +0200 Message-Id: <20220829092841.14244-2-dwagner@suse.de> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220829092841.14244-1-dwagner@suse.de> References: <20220829092841.14244-1-dwagner@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220829_022845_893329_A8062D85 X-CRM114-Status: GOOD ( 11.26 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Allow to set the max queues the target supports. This is useful for testing the reconnect attempt of the host with changing numbers of supported queues. Signed-off-by: Daniel Wagner Reviewed-by: Hannes Reinecke --- drivers/nvme/target/configfs.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 2bcd60758919..e34a2896fedb 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -1281,6 +1281,34 @@ static ssize_t nvmet_subsys_attr_pi_enable_store(struct config_item *item, CONFIGFS_ATTR(nvmet_subsys_, attr_pi_enable); #endif +static ssize_t nvmet_subsys_attr_qid_max_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->max_qid); +} + +static ssize_t nvmet_subsys_attr_qid_max_store(struct config_item *item, + const char *page, size_t cnt) +{ + struct nvmet_port *port = to_nvmet_port(item); + u16 qid_max; + + if (nvmet_is_port_enabled(port, __func__)) + return -EACCES; + + if (sscanf(page, "%hu\n", &qid_max) != 1) + return -EINVAL; + + if (qid_max < 1 || qid_max > NVMET_NR_QUEUES) + return -EINVAL; + + down_write(&nvmet_config_sem); + to_subsys(item)->max_qid = qid_max; + up_write(&nvmet_config_sem); + return cnt; +} +CONFIGFS_ATTR(nvmet_subsys_, attr_qid_max); + static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_allow_any_host, &nvmet_subsys_attr_attr_version, @@ -1288,6 +1316,7 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_cntlid_min, &nvmet_subsys_attr_attr_cntlid_max, &nvmet_subsys_attr_attr_model, + &nvmet_subsys_attr_attr_qid_max, #ifdef CONFIG_BLK_DEV_INTEGRITY &nvmet_subsys_attr_attr_pi_enable, #endif -- 2.37.2