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 DAF31C982DF for ; Fri, 18 Sep 2026 18:17:10 +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=XucfLuTS9otn5RCUHBJMmZsLBhJtMpUV15kULQxOZKo=; b=jpZjG64M4nNdMgs7Vx5LHZWO3T /elk4Oa/U6OBcyWVuncDRD9R5/8Bg6ruel1Yj2jcMxvy2CL2iZTO9aWxc0wMuFhMvHRpzgoGrTvMX geGY+dVEEHDYhi85WSI7pu0VIyf2xBXBfMbfzzLfPRYWrTo/9EqfYQTdOspxy37gWWH7uXU5ylnP0 zD3JKiQmL9YHPhkEtcpv4PSvrDpRp3O3iV7YLdx9CojKtl7JMqruIgEOoIq6m2JqSOIKdOL8Stzwd HCW8opZCsEX1RkG0SSXJtHr8PMmcfZ67U7NJUP5AFnYKP3FJ0qjIrYhWsOL8ZvKiBjtWnr8YhWbIw CV1grkcQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7d93-0000000FH2A-1F08; Fri, 18 Sep 2026 18:17:09 +0000 Received: from mail-pj1-x102b.google.com ([2607:f8b0:4864:20::102b]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7d8z-0000000FGyF-1ySq for linux-nvme@lists.infradead.org; Fri, 18 Sep 2026 18:17:06 +0000 Received: by mail-pj1-x102b.google.com with SMTP id 98e67ed59e1d1-39647aa9d52so941338a91.0 for ; Fri, 18 Sep 2026 11:17:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=purestorage.com; s=google2022; t=1789755424; x=1790360224; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=XucfLuTS9otn5RCUHBJMmZsLBhJtMpUV15kULQxOZKo=; b=Dd5a5xaJp5UDdtDCIHnZU0cO0h+0HtLAIB/rTThAGXtxE2dYgVZHIFW47qqjQavaor BP5bX1xYfuxB89OYeYBwjbzWDbqkGgwi43PVwsXt5W5SKk5uWuo6jJy+aa7l3JsTE0uE ukNviXMhIP0B5wYlB5HitqIiWHQnwFEVvXqXRGZfbTccAB1QWh7fpQstGbTjJPrgeW6r IaRZDzSQGc+7l/5Ors6EzusWcg/Hrd0GWDVYLpdfkXze77ufkofaRvQSTIegi8QRrQRa gwQra0cLAe2UD8j6RmUs6AN7urIIK/8utv5UfGtWtPv3Zoz+pA4fLTH0z+O36SPhHy7A xBQA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789755424; x=1790360224; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=XucfLuTS9otn5RCUHBJMmZsLBhJtMpUV15kULQxOZKo=; b=gDqyjTQJ2uz8XMGdE6NWo0WyGCdLeE6JEADyYbl9fUJmjwsWQlMMjyAm/yOjyPASao vfTfVVS2M9Jw8rYLfHpsYIh4/34B85YjPXVvLLwjuUUpqmNKyjRiFJ/sjmNLQUmsn8BL pK3NeeBkmL2b/AnH8RepyzXHh7qLR5bNYBOwf7RmWa8Ld5FYEt17RFkcRM4oGy6jnNHX vpr4K0DwRSSLW201cR7P0FFfU6RTsCAFkvekvKBFtr1lFLGHNq4U6+Gt/hD/kV44YUiK 9jkTvOFrNMPP+XXBm/E5Uad5/4YLZS9Y+T1kD57auBJKQ7PLFzBeXZzcVPWG5CwD1zZm LTuQ== X-Forwarded-Encrypted: i=1; AKwUvBxZrYVhgGMtACFMKU8lhJzm6FazUtt9MeznjhYCqtAxXKVV36Dba/5Sy+h+UtEhneNssIQRxg37HM05@lists.infradead.org X-Gm-Message-State: AFuF++l3gSCeR5tdGfDqMBzLKt/tiTVq/Ei5tJ4Q+O1zOdDL/UjZr1ld mWnddFO31xazqkgX8dcNeljjp6ckIlyKX5OFKdFEzls7Z1/zUEVgVYgcdvTwxo6FNZQ= X-Gm-Gg: AYBFou2dA6dx18Zjh96ADKqwmddrYdrLAm2EloaWv1zmGDSZoyucO66t+CdYApoI1cx oVnoXdFxPPl3keTuXz2eDkZ+iYA4OCFXGijRH9qbbE2nJUklfPnl8cUzX3WWKid3i/wzaISip2w /b1X8cieAW5uFEOabNZcoI45/RPI7EMM/xSJFbn7qFXnYm7w+IOWYYjpP1bvB7IVv1aCfipNKql +JVEvzbfF2WiUk7dAVsMMmpD05NCHTzLOYM9OCGa5TikjvG7nUdAgsdu488rGClZEbBeeYAMlrq 8ICS1grZCC4tjfC72ppY/mXIPmSPbusGiCBiAGYmIT6ZQ2qYsdHT0bkLFbYq9sa+4RDmtpgu/FO YOEWrfSaEsFk7A9/aeBgNASC+c4OCd98N+4zm6Y7L4JnWcvhEl3GTdZptp3bhOCz8gLpOyDN8IL or5dP1hW87jICmDUBKKnGveMhCJ4ISAB7h7ilY8FZIrpyTE8X+NwO3X7XmeULXhXZWQj0oOqHn2 4PeE/tILPyQPrDKhLUpHg== X-Received: by 2002:a17:90b:3c92:b0:39e:542d:a8c5 with SMTP id 98e67ed59e1d1-39e542da9ecmr4678007a91.7.1789755424265; Fri, 18 Sep 2026 11:17:04 -0700 (PDT) Received: from apollo.purestorage.com ([208.88.152.253]) by smtp.googlemail.com with ESMTPSA id 5a478bee46e88-33c331aeeddsm335107eec.24.2026.09.18.11.17.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2026 11:17:03 -0700 (PDT) From: Mohamed Khalfella To: Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg Cc: Justin Tee , Naresh Gottumukkala , Paul Ely , Hannes Reinecke , Chaitanya Kulkarni , James Smart , Randy Jennings , Mohamed Khalfella , linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Hannes Reinecke Subject: [PATCH 04/18] nvmet: Implement CCR logpage Date: Fri, 18 Sep 2026 11:14:04 -0700 Message-ID: <20260918181614.3947933-5-mkhalfella@purestorage.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260918181614.3947933-1-mkhalfella@purestorage.com> References: <20260918181614.3947933-1-mkhalfella@purestorage.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260918_111705_514479_936D5792 X-CRM114-Status: GOOD ( 15.46 ) 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 Defined by TP8028 Rapid Path Failure Recovery, CCR (Cross-Controller Reset) log page contains an entry for each CCR request submitted to source controller. Implement CCR logpage for nvme linux target. Signed-off-by: Mohamed Khalfella Reviewed-by: Hannes Reinecke Reviewed-by: Sagi Grimberg --- drivers/nvme/target/admin-cmd.c | 44 +++++++++++++++++++++++++++++++++ include/linux/nvme.h | 29 ++++++++++++++++++++++ 2 files changed, 73 insertions(+) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index 21538e7c83be..a60b2f271e98 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -220,6 +220,7 @@ static void nvmet_execute_get_supported_log_pages(struct nvmet_req *req) logs->lids[NVME_LOG_FEATURES] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_RMI] = cpu_to_le32(NVME_LIDS_LSUPP); logs->lids[NVME_LOG_RESERVATION] = cpu_to_le32(NVME_LIDS_LSUPP); + logs->lids[NVME_LOG_CCR] = cpu_to_le32(NVME_LIDS_LSUPP); status = nvmet_copy_to_sgl(req, 0, logs, sizeof(*logs)); kfree(logs); @@ -608,6 +609,47 @@ static void nvmet_execute_get_log_page_features(struct nvmet_req *req) nvmet_req_complete(req, status); } +static void nvmet_execute_get_log_page_ccr(struct nvmet_req *req) +{ + struct nvmet_ctrl *ctrl = req->sq->ctrl; + struct nvmet_ccr *ccr; + struct nvme_ccr_log *log; + int index = 0; + u16 status; + + log = kzalloc_obj(*log); + if (!log) { + status = NVME_SC_INTERNAL; + goto out; + } + + mutex_lock(&ctrl->lock); + list_for_each_entry(ccr, &ctrl->ccr_list, entry) { + u8 flags = NVME_CCR_FLAGS_VALIDATED | NVME_CCR_FLAGS_INITIATED; + u8 ccr_status = ccr->ctrl ? NVME_CCR_STATUS_IN_PROGRESS : + NVME_CCR_STATUS_SUCCESS; + + log->entries[index].icid = cpu_to_le16(ccr->icid); + log->entries[index].ciu = ccr->ciu; + log->entries[index].acid = cpu_to_le16(0xffff); + log->entries[index].ccrs = ccr_status; + log->entries[index].ccrf = flags; + index++; + } + + /* Cleanup completed CCRs if requested */ + if (req->cmd->get_log_page.lsp & 0x1) + nvmet_ctrl_cleanup_ccrs(ctrl, false); + mutex_unlock(&ctrl->lock); + + log->ne = cpu_to_le16(index); + nvmet_clear_aen_bit(req, NVME_AEN_BIT_CCR_COMPLETE); + status = nvmet_copy_to_sgl(req, 0, log, sizeof(*log)); + kfree(log); +out: + nvmet_req_complete(req, status); +} + static void nvmet_execute_get_log_page(struct nvmet_req *req) { if (!nvmet_check_transfer_len(req, nvmet_get_log_page_len(req->cmd))) @@ -641,6 +683,8 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req) return nvmet_execute_get_log_page_rmi(req); case NVME_LOG_RESERVATION: return nvmet_execute_get_log_page_resv(req); + case NVME_LOG_CCR: + return nvmet_execute_get_log_page_ccr(req); } pr_debug("unhandled lid %d on qid %d\n", req->cmd->get_log_page.lid, req->sq->qid); diff --git a/include/linux/nvme.h b/include/linux/nvme.h index 7e6150d9494a..70dd0770e032 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -1440,6 +1440,7 @@ enum { NVME_LOG_ANA = 0x0c, NVME_LOG_FEATURES = 0x12, NVME_LOG_RMI = 0x16, + NVME_LOG_CCR = 0x1e, NVME_LOG_FDP_CONFIGS = 0x20, NVME_LOG_DISC = 0x70, NVME_LOG_RESERVATION = 0x80, @@ -1466,6 +1467,34 @@ enum { NVME_FIS_CSCPE = 1 << 21, }; +/* NVMe Cross-Controller Reset Status */ +enum { + NVME_CCR_STATUS_IN_PROGRESS, + NVME_CCR_STATUS_SUCCESS, + NVME_CCR_STATUS_FAILED, +}; + +/* NVMe Cross-Controller Reset Flags */ +enum { + NVME_CCR_FLAGS_VALIDATED = 0x01, + NVME_CCR_FLAGS_INITIATED = 0x02, +}; + +struct nvme_ccr_log_entry { + __le16 icid; + __u8 ciu; + __u8 rsvd3; + __le16 acid; + __u8 ccrs; + __u8 ccrf; +}; + +struct nvme_ccr_log { + __le16 ne; + __u8 rsvd2[6]; + struct nvme_ccr_log_entry entries[NVMF_CCR_PER_PAGE]; +}; + /* NVMe Namespace Write Protect State */ enum { NVME_NS_NO_WRITE_PROTECT = 0, -- 2.55.0