From patchwork Thu Jan 7 00:50:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: James Smart X-Patchwork-Id: 358625 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2A8AC433E6 for ; Thu, 7 Jan 2021 00:51:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7B5923120 for ; Thu, 7 Jan 2021 00:51:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726390AbhAGAvk (ORCPT ); Wed, 6 Jan 2021 19:51:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41436 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726262AbhAGAvj (ORCPT ); Wed, 6 Jan 2021 19:51:39 -0500 Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 755F4C061282 for ; Wed, 6 Jan 2021 16:50:50 -0800 (PST) Received: by mail-pl1-x62c.google.com with SMTP id q4so2472811plr.7 for ; Wed, 06 Jan 2021 16:50:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ryF4CPyHk+frAmbHA8UeJYYCozuHLqXrFoYhEbqiW8E=; b=VR0ComhunUtYk3S1pHhK4VF1m/8TNgu3YEvL/zro0zQNKwJUnzEkEHP72t9kCGkGd1 moIOpb3AgdrcYRMaCTszoJrH6KzvO04hUcz4lnosM2ySPS33uCJrdqZRj1GpOxZZQJ+d 9hBaRNMV82NU7q6wFp+dhiWhllJ2edIwvtmt0bRWl8L18e+J3b8//SDaWnZHb6jVSzRj 9IRZ0T3fozX3ajDXwGC3R3qbgdnPsKH2058DIpgb+92zKiblIl9P9/85hgBElnt1JO5d qNetJMykGjyfTQ1hZtnaUCWwPt7mlAWtn+/b9IpBb4QOKRAH4N4wRl5v2HsANmoM71cE IJJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ryF4CPyHk+frAmbHA8UeJYYCozuHLqXrFoYhEbqiW8E=; b=SR6QRuKY0opncZBLDUwYieYySPaw3lz7Pd+pbKaLlhnw8SRdEgs/HgRrgvqmh/Oe8k uUNh5O+LnWCgt2TQr2SamuWENaU4dSnT8h/hq2zpuiFUthplbew3KnWNzeMDRVXy8zBp e/C86IA4iZp+KkvSMgjT35ErwCK4joUAZnrjOqvqpfOuDKQjAJ4HCUfkkm4EqpmUJpCV DmdZxwJpQNhZ2LFbTh6zIvg6FdUko00s1+B3Xwknu1KOCqFqskFGGx48ioOf4XjUdz6X mzM6Una06OwR9Tp0K8ni2ozF5uJcdYz7O5Bw5of87PX3rC9vD2VKhBRZ2Xq3mIxPaaxM RmKQ== X-Gm-Message-State: AOAM5326fjT7Zmb0BuCOs/3+Aw6ensEcyt0T0a1wiMHLtf0zyAQcUvch L66vk/DawCcugLmLmNq6XYN79xmhvKHyQw== X-Google-Smtp-Source: ABdhPJwFfwEmqt4l+3W0t7WwcphbhYmm4/Ln2SxY/ZCSRKOs5UjNxOCovnG8tzjDe/BEGKlkxv+bHg== X-Received: by 2002:a17:902:c193:b029:da:ea4f:af79 with SMTP id d19-20020a170902c193b02900daea4faf79mr6635577pld.14.1609980649330; Wed, 06 Jan 2021 16:50:49 -0800 (PST) Received: from localhost.localdomain ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id w27sm3600634pfq.104.2021.01.06.16.50.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Jan 2021 16:50:48 -0800 (PST) From: James Smart To: linux-scsi@vger.kernel.org Cc: James Smart , Ram Vegesna Subject: [PATCH v6 15/31] elx: libefc: Extended link Service IO handling Date: Wed, 6 Jan 2021 16:50:14 -0800 Message-Id: <20210107005030.2929-16-jsmart2021@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210107005030.2929-1-jsmart2021@gmail.com> References: <20210107005030.2929-1-jsmart2021@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This patch continues the libefc library population. This patch adds library interface definitions for: Functions to build and send ELS/CT/BLS commands and responses. Co-developed-by: Ram Vegesna Signed-off-by: Ram Vegesna Signed-off-by: James Smart --- v6: efc_disc_io_complete(): update WARN_ON to WARN_ON_ONCE Change els send functions to return status from efc_els_send_req() v5: ELS IO mempool changes. --- drivers/scsi/elx/libefc/efc_els.c | 1113 +++++++++++++++++++++++++++++ drivers/scsi/elx/libefc/efc_els.h | 107 +++ 2 files changed, 1220 insertions(+) create mode 100644 drivers/scsi/elx/libefc/efc_els.c create mode 100644 drivers/scsi/elx/libefc/efc_els.h diff --git a/drivers/scsi/elx/libefc/efc_els.c b/drivers/scsi/elx/libefc/efc_els.c new file mode 100644 index 000000000000..719129a74342 --- /dev/null +++ b/drivers/scsi/elx/libefc/efc_els.c @@ -0,0 +1,1113 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +/* + * Functions to build and send ELS/CT/BLS commands and responses. + */ + +#include "efc.h" +#include "efc_els.h" +#include "../libefc_sli/sli4.h" + +#define EFC_LOG_ENABLE_ELS_TRACE(efc) \ + (((efc) != NULL) ? (((efc)->logmask & (1U << 1)) != 0) : 0) + +#define node_els_trace() \ + do { \ + if (EFC_LOG_ENABLE_ELS_TRACE(efc)) \ + efc_log_info(efc, "[%s] %-20s\n", \ + node->display_name, __func__); \ + } while (0) + +#define els_io_printf(els, fmt, ...) \ + efc_log_err((struct efc *)els->node->efc,\ + "[%s] %-8s " fmt, \ + els->node->display_name,\ + els->display_name, ##__VA_ARGS__) + +#define EFC_ELS_RSP_LEN 1024 +#define EFC_ELS_GID_PT_RSP_LEN 8096 + +struct efc_els_io_req * +efc_els_io_alloc(struct efc_node *node, u32 reqlen) +{ + return efc_els_io_alloc_size(node, reqlen, EFC_ELS_RSP_LEN); +} + +struct efc_els_io_req * +efc_els_io_alloc_size(struct efc_node *node, u32 reqlen, u32 rsplen) +{ + struct efc *efc; + struct efc_els_io_req *els; + unsigned long flags = 0; + + efc = node->efc; + + spin_lock_irqsave(&node->els_ios_lock, flags); + + if (!READ_ONCE(node->els_io_enabled)) { + efc_log_err(efc, "els io alloc disabled\n"); + spin_unlock_irqrestore(&node->els_ios_lock, flags); + return NULL; + } + + els = mempool_alloc(efc->els_io_pool, GFP_ATOMIC); + if (!els) { + atomic_add_return(1, &efc->els_io_alloc_failed_count); + spin_unlock_irqrestore(&node->els_ios_lock, flags); + return NULL; + } + + /* initialize refcount */ + kref_init(&els->ref); + els->release = _efc_els_io_free; + + /* populate generic io fields */ + els->node = node; + + /* now allocate DMA for request and response */ + els->io.req.size = reqlen; + els->io.req.virt = dma_alloc_coherent(&efc->pci->dev, els->io.req.size, + &els->io.req.phys, GFP_DMA); + if (!els->io.req.virt) { + mempool_free(els, efc->els_io_pool); + spin_unlock_irqrestore(&node->els_ios_lock, flags); + return NULL; + } + + els->io.rsp.size = rsplen; + els->io.rsp.virt = dma_alloc_coherent(&efc->pci->dev, els->io.rsp.size, + &els->io.rsp.phys, GFP_DMA); + if (!els->io.rsp.virt) { + dma_free_coherent(&efc->pci->dev, els->io.req.size, + els->io.req.virt, els->io.req.phys); + mempool_free(els, efc->els_io_pool); + els = NULL; + } + + if (els) { + /* initialize fields */ + els->els_retries_remaining = EFC_FC_ELS_DEFAULT_RETRIES; + + /* add els structure to ELS IO list */ + INIT_LIST_HEAD(&els->list_entry); + list_add_tail(&els->list_entry, &node->els_ios_list); + } + + spin_unlock_irqrestore(&node->els_ios_lock, flags); + return els; +} + +void +efc_els_io_free(struct efc_els_io_req *els) +{ + kref_put(&els->ref, els->release); +} + +void +_efc_els_io_free(struct kref *arg) +{ + struct efc_els_io_req *els = + container_of(arg, struct efc_els_io_req, ref); + struct efc *efc; + struct efc_node *node; + int send_empty_event = false; + unsigned long flags = 0; + + node = els->node; + efc = node->efc; + + spin_lock_irqsave(&node->els_ios_lock, flags); + + list_del(&els->list_entry); + /* Send list empty event if the IO allocator + * is disabled, and the list is empty + * If node->els_io_enabled was not checked, + * the event would be posted continually + */ + send_empty_event = (!READ_ONCE(node->els_io_enabled)) && + list_empty(&node->els_ios_list); + + spin_unlock_irqrestore(&node->els_ios_lock, flags); + + /* free ELS request and response buffers */ + dma_free_coherent(&efc->pci->dev, els->io.rsp.size, + els->io.rsp.virt, els->io.rsp.phys); + dma_free_coherent(&efc->pci->dev, els->io.req.size, + els->io.req.virt, els->io.req.phys); + + mempool_free(els, efc->els_io_pool); + + if (send_empty_event) + efc_scsi_io_list_empty(node->efc, node); +} + +static void +efc_els_retry(struct efc_els_io_req *els); + +static void +efc_els_delay_timer_cb(struct timer_list *t) +{ + struct efc_els_io_req *els = from_timer(els, t, delay_timer); + + /* Retry delay timer expired, retry the ELS request */ + efc_els_retry(els); +} + +static int +efc_els_req_cb(void *arg, u32 length, int status, u32 ext_status) +{ + struct efc_els_io_req *els; + struct efc_node *node; + struct efc *efc; + struct efc_node_cb cbdata; + u32 reason_code; + + els = arg; + node = els->node; + efc = node->efc; + + if (status) + els_io_printf(els, "status x%x ext x%x\n", status, ext_status); + + /* set the response len element of els->rsp */ + els->io.rsp.len = length; + + cbdata.status = status; + cbdata.ext_status = ext_status; + cbdata.header = NULL; + cbdata.els_rsp = els->io.rsp; + + /* set the response len element of els->rsp */ + cbdata.rsp_len = length; + + /* FW returns the number of bytes received on the link in + * the WCQE, not the amount placed in the buffer; use this info to + * check if there was an overrun. + */ + if (length > els->io.rsp.size) { + efc_log_warn(efc, + "ELS response returned len=%d > buflen=%zu\n", + length, els->io.rsp.size); + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata); + return EFC_SUCCESS; + } + + /* Post event to ELS IO object */ + switch (status) { + case SLI4_FC_WCQE_STATUS_SUCCESS: + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_OK, &cbdata); + break; + + case SLI4_FC_WCQE_STATUS_LS_RJT: + reason_code = (ext_status >> 16) & 0xff; + + /* delay and retry if reason code is Logical Busy */ + switch (reason_code) { + case ELS_RJT_BUSY: + els->node->els_req_cnt--; + els_io_printf(els, + "LS_RJT Logical Busy, delay and retry\n"); + timer_setup(&els->delay_timer, + efc_els_delay_timer_cb, 0); + mod_timer(&els->delay_timer, + jiffies + msecs_to_jiffies(5000)); + break; + default: + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_RJT, + &cbdata); + break; + } + break; + + case SLI4_FC_WCQE_STATUS_LOCAL_REJECT: + switch (ext_status) { + case SLI4_FC_LOCAL_REJECT_SEQUENCE_TIMEOUT: + efc_els_retry(els); + break; + default: + efc_log_err(efc, "LOCAL_REJECT with ext status:%x\n", + ext_status); + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, + &cbdata); + break; + } + break; + default: /* Other error */ + efc_log_warn(efc, "els req failed status x%x, ext_status x%x\n", + status, ext_status); + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata); + break; + } + + return EFC_SUCCESS; +} + +void efc_disc_io_complete(struct efc_disc_io *io, u32 len, u32 status, + u32 ext_status) +{ + struct efc_els_io_req *els = + container_of(io, struct efc_els_io_req, io); + + WARN_ON_ONCE(!els->cb); + + ((efc_hw_srrs_cb_t) els->cb) (els, len, status, ext_status); +} + +static int efc_els_send_req(struct efc_node *node, struct efc_els_io_req *els, + enum efc_disc_io_type io_type) +{ + int rc = EFC_SUCCESS; + struct efc *efc = node->efc; + struct efc_node_cb cbdata; + + /* update ELS request counter */ + els->node->els_req_cnt++; + + /* Prepare the IO request details */ + els->io.io_type = io_type; + els->io.xmit_len = els->io.req.size; + els->io.rsp_len = els->io.rsp.size; + els->io.rpi = node->rnode.indicator; + els->io.vpi = node->nport->indicator; + els->io.s_id = node->nport->fc_id; + els->io.d_id = node->rnode.fc_id; + + if (node->rnode.attached) + els->io.rpi_registered = true; + + els->cb = efc_els_req_cb; + + rc = efc->tt.send_els(efc, &els->io); + if (!rc) + return rc; + + cbdata.status = EFC_STATUS_INVALID; + cbdata.ext_status = EFC_STATUS_INVALID; + cbdata.els_rsp = els->io.rsp; + efc_log_err(efc, "efc_els_send failed: %d\n", rc); + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata); + + return rc; +} + +static void +efc_els_retry(struct efc_els_io_req *els) +{ + struct efc *efc; + struct efc_node_cb cbdata; + u32 rc; + + efc = els->node->efc; + cbdata.status = EFC_STATUS_INVALID; + cbdata.ext_status = EFC_STATUS_INVALID; + cbdata.els_rsp = els->io.rsp; + + + if (els->els_retries_remaining) { + els->els_retries_remaining--; + rc = efc->tt.send_els(efc, &els->io); + } else { + rc = EFC_FAIL; + } + + if (rc) { + efc_log_err(efc, "ELS retries exhausted\n"); + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_REQ_FAIL, &cbdata); + } +} + +static int +efc_els_acc_cb(void *arg, u32 length, int status, u32 ext_status) +{ + struct efc_els_io_req *els; + struct efc_node *node; + struct efc *efc; + struct efc_node_cb cbdata; + + els = arg; + node = els->node; + efc = node->efc; + + cbdata.status = status; + cbdata.ext_status = ext_status; + cbdata.header = NULL; + cbdata.els_rsp = els->io.rsp; + + /* Post node event */ + switch (status) { + case SLI4_FC_WCQE_STATUS_SUCCESS: + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_OK, &cbdata); + break; + + default: /* Other error */ + efc_log_warn(efc, "[%s] %-8s failed status x%x, ext x%x\n", + node->display_name, els->display_name, + status, ext_status); + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_FAIL, &cbdata); + break; + } + + return EFC_SUCCESS; +} + +static void +efc_els_send_rsp(struct efc_els_io_req *els, u32 rsplen) +{ + int rc; + struct efc_node_cb cbdata; + struct efc_node *node = els->node; + struct efc *efc = node->efc; + + /* increment ELS completion counter */ + node->els_cmpl_cnt++; + + els->io.io_type = EFC_DISC_IO_ELS_RESP; + els->cb = efc_els_acc_cb; + + /* Prepare the IO request details */ + els->io.xmit_len = rsplen; + els->io.rsp_len = els->io.rsp.size; + els->io.rpi = node->rnode.indicator; + els->io.vpi = node->nport->indicator; + if (node->nport->fc_id != U32_MAX) + els->io.s_id = node->nport->fc_id; + else + els->io.s_id = els->io.iparam.els.s_id; + els->io.d_id = node->rnode.fc_id; + + if (node->attached) + els->io.rpi_registered = true; + + rc = efc->tt.send_els(efc, &els->io); + if (!rc) + return; + + cbdata.status = EFC_STATUS_INVALID; + cbdata.ext_status = EFC_STATUS_INVALID; + cbdata.els_rsp = els->io.rsp; + efc_els_io_cleanup(els, EFC_EVT_SRRS_ELS_CMPL_FAIL, &cbdata); +} + +int +efc_send_plogi(struct efc_node *node) +{ + struct efc_els_io_req *els; + struct efc *efc = node->efc; + struct fc_els_flogi *plogi; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*plogi)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + els->display_name = "plogi"; + + /* Build PLOGI request */ + plogi = els->io.req.virt; + + memcpy(plogi, node->nport->service_params, sizeof(*plogi)); + + plogi->fl_cmd = ELS_PLOGI; + memset(plogi->_fl_resvd, 0, sizeof(plogi->_fl_resvd)); + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_flogi(struct efc_node *node) +{ + struct efc_els_io_req *els; + struct efc *efc; + struct fc_els_flogi *flogi; + + efc = node->efc; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*flogi)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "flogi"; + + /* Build FLOGI request */ + flogi = els->io.req.virt; + + memcpy(flogi, node->nport->service_params, sizeof(*flogi)); + flogi->fl_cmd = ELS_FLOGI; + memset(flogi->_fl_resvd, 0, sizeof(flogi->_fl_resvd)); + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_fdisc(struct efc_node *node) +{ + struct efc_els_io_req *els; + struct efc *efc; + struct fc_els_flogi *fdisc; + + efc = node->efc; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*fdisc)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "fdisc"; + + /* Build FDISC request */ + fdisc = els->io.req.virt; + + memcpy(fdisc, node->nport->service_params, sizeof(*fdisc)); + fdisc->fl_cmd = ELS_FDISC; + memset(fdisc->_fl_resvd, 0, sizeof(fdisc->_fl_resvd)); + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_prli(struct efc_node *node) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els; + struct { + struct fc_els_prli prli; + struct fc_els_spp spp; + } *pp; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*pp)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "prli"; + + /* Build PRLI request */ + pp = els->io.req.virt; + + memset(pp, 0, sizeof(*pp)); + + pp->prli.prli_cmd = ELS_PRLI; + pp->prli.prli_spp_len = 16; + pp->prli.prli_len = cpu_to_be16(sizeof(*pp)); + pp->spp.spp_type = FC_TYPE_FCP; + pp->spp.spp_type_ext = 0; + pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR; + pp->spp.spp_params = cpu_to_be32(FCP_SPPF_RD_XRDY_DIS | + (node->nport->enable_ini ? + FCP_SPPF_INIT_FCN : 0) | + (node->nport->enable_tgt ? + FCP_SPPF_TARG_FCN : 0)); + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_logo(struct efc_node *node) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els; + struct fc_els_logo *logo; + struct fc_els_flogi *sparams; + + node_els_trace(); + + sparams = (struct fc_els_flogi *)node->nport->service_params; + + els = efc_els_io_alloc(node, sizeof(*logo)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "logo"; + + /* Build LOGO request */ + + logo = els->io.req.virt; + + memset(logo, 0, sizeof(*logo)); + logo->fl_cmd = ELS_LOGO; + hton24(logo->fl_n_port_id, node->rnode.nport->fc_id); + logo->fl_n_port_wwn = sparams->fl_wwpn; + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_adisc(struct efc_node *node) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els; + struct fc_els_adisc *adisc; + struct fc_els_flogi *sparams; + struct efc_nport *nport = node->nport; + + node_els_trace(); + + sparams = (struct fc_els_flogi *)node->nport->service_params; + + els = efc_els_io_alloc(node, sizeof(*adisc)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "adisc"; + + /* Build ADISC request */ + + adisc = els->io.req.virt; + + memset(adisc, 0, sizeof(*adisc)); + adisc->adisc_cmd = ELS_ADISC; + hton24(adisc->adisc_hard_addr, nport->fc_id); + adisc->adisc_wwpn = sparams->fl_wwpn; + adisc->adisc_wwnn = sparams->fl_wwnn; + hton24(adisc->adisc_port_id, node->rnode.nport->fc_id); + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_scr(struct efc_node *node) +{ + struct efc_els_io_req *els; + struct efc *efc = node->efc; + struct fc_els_scr *req; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*req)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "scr"; + + req = els->io.req.virt; + + memset(req, 0, sizeof(*req)); + req->scr_cmd = ELS_SCR; + req->scr_reg_func = ELS_SCRF_FULL; + + return efc_els_send_req(node, els, EFC_DISC_IO_ELS_REQ); +} + +int +efc_send_ls_rjt(struct efc_node *node, u32 ox_id, u32 reason_code, + u32 reason_code_expl, u32 vendor_unique) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct fc_els_ls_rjt *rjt; + + els = efc_els_io_alloc(node, sizeof(*rjt)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + node_els_trace(); + + els->display_name = "ls_rjt"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + rjt = els->io.req.virt; + memset(rjt, 0, sizeof(*rjt)); + + rjt->er_cmd = ELS_LS_RJT; + rjt->er_reason = reason_code; + rjt->er_explan = reason_code_expl; + + efc_els_send_rsp(els, sizeof(*rjt)); + + return EFC_SUCCESS; +} + +int +efc_send_plogi_acc(struct efc_node *node, u32 ox_id) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct fc_els_flogi *plogi; + struct fc_els_flogi *req = (struct fc_els_flogi *)node->service_params; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*plogi)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "plogi_acc"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + plogi = els->io.req.virt; + + /* copy our port's service parameters to payload */ + memcpy(plogi, node->nport->service_params, sizeof(*plogi)); + plogi->fl_cmd = ELS_LS_ACC; + memset(plogi->_fl_resvd, 0, sizeof(plogi->_fl_resvd)); + + /* Set Application header support bit if requested */ + if (req->fl_csp.sp_features & cpu_to_be16(FC_SP_FT_BCAST)) + plogi->fl_csp.sp_features |= cpu_to_be16(FC_SP_FT_BCAST); + + efc_els_send_rsp(els, sizeof(*plogi)); + + return EFC_SUCCESS; +} + +int +efc_send_flogi_p2p_acc(struct efc_node *node, u32 ox_id, u32 s_id) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct fc_els_flogi *flogi; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*flogi)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "flogi_p2p_acc"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + els->io.iparam.els.s_id = s_id; + + flogi = els->io.req.virt; + + /* copy our port's service parameters to payload */ + memcpy(flogi, node->nport->service_params, sizeof(*flogi)); + flogi->fl_cmd = ELS_LS_ACC; + memset(flogi->_fl_resvd, 0, sizeof(flogi->_fl_resvd)); + + memset(flogi->fl_cssp, 0, sizeof(flogi->fl_cssp)); + + efc_els_send_rsp(els, sizeof(*flogi)); + + return EFC_SUCCESS; +} + +int +efc_send_prli_acc(struct efc_node *node, u32 ox_id) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct { + struct fc_els_prli prli; + struct fc_els_spp spp; + } *pp; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*pp)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "prli_acc"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + pp = els->io.req.virt; + memset(pp, 0, sizeof(*pp)); + + pp->prli.prli_cmd = ELS_LS_ACC; + pp->prli.prli_spp_len = 0x10; + pp->prli.prli_len = cpu_to_be16(sizeof(*pp)); + pp->spp.spp_type = FC_TYPE_FCP; + pp->spp.spp_type_ext = 0; + pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR | FC_SPP_RESP_ACK; + + pp->spp.spp_params = cpu_to_be32(FCP_SPPF_RD_XRDY_DIS | + (node->nport->enable_ini ? + FCP_SPPF_INIT_FCN : 0) | + (node->nport->enable_tgt ? + FCP_SPPF_TARG_FCN : 0)); + + efc_els_send_rsp(els, sizeof(*pp)); + + return EFC_SUCCESS; +} + +int +efc_send_prlo_acc(struct efc_node *node, u32 ox_id) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct { + struct fc_els_prlo prlo; + struct fc_els_spp spp; + } *pp; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*pp)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "prlo_acc"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + pp = els->io.req.virt; + memset(pp, 0, sizeof(*pp)); + pp->prlo.prlo_cmd = ELS_LS_ACC; + pp->prlo.prlo_obs = 0x10; + pp->prlo.prlo_len = cpu_to_be16(sizeof(*pp)); + + pp->spp.spp_type = FC_TYPE_FCP; + pp->spp.spp_type_ext = 0; + pp->spp.spp_flags = FC_SPP_RESP_ACK; + + efc_els_send_rsp(els, sizeof(*pp)); + + return EFC_SUCCESS; +} + +int +efc_send_ls_acc(struct efc_node *node, u32 ox_id) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct fc_els_ls_acc *acc; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*acc)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "ls_acc"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + acc = els->io.req.virt; + memset(acc, 0, sizeof(*acc)); + + acc->la_cmd = ELS_LS_ACC; + + efc_els_send_rsp(els, sizeof(*acc)); + + return EFC_SUCCESS; +} + +int +efc_send_logo_acc(struct efc_node *node, u32 ox_id) +{ + struct efc_els_io_req *els = NULL; + struct efc *efc = node->efc; + struct fc_els_ls_acc *logo; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*logo)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "logo_acc"; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + logo = els->io.req.virt; + memset(logo, 0, sizeof(*logo)); + + logo->la_cmd = ELS_LS_ACC; + + efc_els_send_rsp(els, sizeof(*logo)); + + return EFC_SUCCESS; +} + +int +efc_send_adisc_acc(struct efc_node *node, u32 ox_id) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els = NULL; + struct fc_els_adisc *adisc; + struct fc_els_flogi *sparams; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*adisc)); + if (!els) { + efc_log_err(efc, "els IO alloc failed\n"); + return EFC_FAIL; + } + + els->display_name = "adisc_acc"; + + /* Go ahead and send the ELS_ACC */ + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + els->io.iparam.els.ox_id = ox_id; + + sparams = (struct fc_els_flogi *)node->nport->service_params; + adisc = els->io.req.virt; + memset(adisc, 0, sizeof(*adisc)); + adisc->adisc_cmd = ELS_LS_ACC; + adisc->adisc_wwpn = sparams->fl_wwpn; + adisc->adisc_wwnn = sparams->fl_wwnn; + hton24(adisc->adisc_port_id, node->rnode.nport->fc_id); + + efc_els_send_rsp(els, sizeof(*adisc)); + + return EFC_SUCCESS; +} + +static inline void +fcct_build_req_header(struct fc_ct_hdr *hdr, u16 cmd, u16 max_size) +{ + hdr->ct_rev = FC_CT_REV; + hdr->ct_fs_type = FC_FST_DIR; + hdr->ct_fs_subtype = FC_NS_SUBTYPE; + hdr->ct_options = 0; + hdr->ct_cmd = cpu_to_be16(cmd); + /* words */ + hdr->ct_mr_size = cpu_to_be16(max_size / (sizeof(u32))); + hdr->ct_reason = 0; + hdr->ct_explan = 0; + hdr->ct_vendor = 0; +} + +int +efc_ns_send_rftid(struct efc_node *node) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els; + struct { + struct fc_ct_hdr hdr; + struct fc_ns_rft_id rftid; + } *ct; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*ct)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ; + els->io.iparam.ct.type = FC_TYPE_CT; + els->io.iparam.ct.df_ctl = 0; + els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT; + + els->display_name = "rftid"; + + ct = els->io.req.virt; + memset(ct, 0, sizeof(*ct)); + fcct_build_req_header(&ct->hdr, FC_NS_RFT_ID, + sizeof(struct fc_ns_rft_id)); + + hton24(ct->rftid.fr_fid.fp_fid, node->rnode.nport->fc_id); + ct->rftid.fr_fts.ff_type_map[FC_TYPE_FCP / FC_NS_BPW] = + cpu_to_be32(1 << (FC_TYPE_FCP % FC_NS_BPW)); + + return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ); +} + +int +efc_ns_send_rffid(struct efc_node *node) +{ + struct efc *efc = node->efc; + struct efc_els_io_req *els; + struct { + struct fc_ct_hdr hdr; + struct fc_ns_rff_id rffid; + } *ct; + + node_els_trace(); + + els = efc_els_io_alloc(node, sizeof(*ct)); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ; + els->io.iparam.ct.type = FC_TYPE_CT; + els->io.iparam.ct.df_ctl = 0; + els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT; + + els->display_name = "rffid"; + ct = els->io.req.virt; + + memset(ct, 0, sizeof(*ct)); + fcct_build_req_header(&ct->hdr, FC_NS_RFF_ID, + sizeof(struct fc_ns_rff_id)); + + hton24(ct->rffid.fr_fid.fp_fid, node->rnode.nport->fc_id); + if (node->nport->enable_ini) + ct->rffid.fr_feat |= FCP_FEAT_INIT; + if (node->nport->enable_tgt) + ct->rffid.fr_feat |= FCP_FEAT_TARG; + ct->rffid.fr_type = FC_TYPE_FCP; + + return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ); +} + +int +efc_ns_send_gidpt(struct efc_node *node) +{ + struct efc_els_io_req *els = NULL; + struct efc *efc = node->efc; + struct { + struct fc_ct_hdr hdr; + struct fc_ns_gid_pt gidpt; + } *ct; + + node_els_trace(); + + els = efc_els_io_alloc_size(node, sizeof(*ct), EFC_ELS_GID_PT_RSP_LEN); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + els->io.iparam.ct.r_ctl = FC_RCTL_ELS_REQ; + els->io.iparam.ct.type = FC_TYPE_CT; + els->io.iparam.ct.df_ctl = 0; + els->io.iparam.ct.timeout = EFC_FC_ELS_SEND_DEFAULT_TIMEOUT; + + els->display_name = "gidpt"; + + ct = els->io.req.virt; + + memset(ct, 0, sizeof(*ct)); + fcct_build_req_header(&ct->hdr, FC_NS_GID_PT, + sizeof(struct fc_ns_gid_pt)); + + ct->gidpt.fn_pt_type = FC_TYPE_FCP; + + return efc_els_send_req(node, els, EFC_DISC_IO_CT_REQ); +} + +void +efc_els_io_cleanup(struct efc_els_io_req *els, int evt, void *arg) +{ + /* don't want further events that could come; e.g. abort requests + * from the node state machine; thus, disable state machine + */ + els->els_req_free = true; + efc_node_post_els_resp(els->node, evt, arg); + + efc_els_io_free(els); +} + +static int +efc_ct_acc_cb(void *arg, u32 length, int status, u32 ext_status) +{ + struct efc_els_io_req *els = arg; + + efc_els_io_free(els); + + return EFC_SUCCESS; +} + +int +efc_send_ct_rsp(struct efc *efc, struct efc_node *node, u16 ox_id, + struct fc_ct_hdr *ct_hdr, u32 cmd_rsp_code, + u32 reason_code, u32 reason_code_explanation) +{ + struct efc_els_io_req *els = NULL; + struct fc_ct_hdr *rsp = NULL; + + els = efc_els_io_alloc(node, 256); + if (!els) { + efc_log_err(efc, "IO alloc failed\n"); + return EFC_FAIL; + } + + rsp = els->io.rsp.virt; + + *rsp = *ct_hdr; + + fcct_build_req_header(rsp, cmd_rsp_code, 0); + rsp->ct_reason = reason_code; + rsp->ct_explan = reason_code_explanation; + + els->display_name = "ct_rsp"; + els->cb = efc_ct_acc_cb; + + /* Prepare the IO request details */ + els->io.io_type = EFC_DISC_IO_CT_RESP; + els->io.xmit_len = sizeof(*rsp); + + els->io.rpi = node->rnode.indicator; + els->io.d_id = node->rnode.fc_id; + + memset(&els->io.iparam, 0, sizeof(els->io.iparam)); + + els->io.iparam.ct.ox_id = ox_id; + els->io.iparam.ct.r_ctl = 3; + els->io.iparam.ct.type = FC_TYPE_CT; + els->io.iparam.ct.df_ctl = 0; + els->io.iparam.ct.timeout = 5; + + if (efc->tt.send_els(efc, &els->io)) { + efc_els_io_free(els); + return EFC_FAIL; + } + return EFC_SUCCESS; +} + +int +efc_send_bls_acc(struct efc_node *node, struct fc_frame_header *hdr) +{ + struct sli_bls_params bls; + struct fc_ba_acc *acc; + struct efc *efc = node->efc; + + memset(&bls, 0, sizeof(bls)); + bls.ox_id = be16_to_cpu(hdr->fh_ox_id); + bls.rx_id = be16_to_cpu(hdr->fh_rx_id); + bls.s_id = ntoh24(hdr->fh_d_id); + bls.d_id = node->rnode.fc_id; + bls.rpi = node->rnode.indicator; + bls.vpi = node->nport->indicator; + + acc = (void *)bls.payload; + acc->ba_ox_id = cpu_to_be16(bls.ox_id); + acc->ba_rx_id = cpu_to_be16(bls.rx_id); + acc->ba_high_seq_cnt = cpu_to_be16(U16_MAX); + + return efc->tt.send_bls(efc, FC_RCTL_BA_ACC, &bls); +} diff --git a/drivers/scsi/elx/libefc/efc_els.h b/drivers/scsi/elx/libefc/efc_els.h new file mode 100644 index 000000000000..29926e690ec4 --- /dev/null +++ b/drivers/scsi/elx/libefc/efc_els.h @@ -0,0 +1,107 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2021 Broadcom. All Rights Reserved. The term + * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. + */ + +#ifndef __EFC_ELS_H__ +#define __EFC_ELS_H__ + +#define EFC_STATUS_INVALID INT_MAX +#define EFC_ELS_IO_POOL_SZ 1024 + +struct efc_els_io_req { + struct list_head list_entry; + struct kref ref; + void (*release)(struct kref *arg); + struct efc_node *node; + void *cb; + uint32_t els_retries_remaining; + bool els_req_free; + struct timer_list delay_timer; + + const char *display_name; + + struct efc_disc_io io; +}; + +typedef int(*efc_hw_srrs_cb_t)(void *arg, u32 length, int status, + u32 ext_status); + +void _efc_els_io_free(struct kref *arg); +struct efc_els_io_req * +efc_els_io_alloc(struct efc_node *node, u32 reqlen); +struct efc_els_io_req * +efc_els_io_alloc_size(struct efc_node *node, u32 reqlen, u32 rsplen); +void efc_els_io_free(struct efc_els_io_req *els); + +/* ELS command send */ +typedef void (*els_cb_t)(struct efc_node *node, + struct efc_node_cb *cbdata, void *arg); +int +efc_send_plogi(struct efc_node *node); +int +efc_send_flogi(struct efc_node *node); +int +efc_send_fdisc(struct efc_node *node); +int +efc_send_prli(struct efc_node *node); +int +efc_send_prlo(struct efc_node *node); +int +efc_send_logo(struct efc_node *node); +int +efc_send_adisc(struct efc_node *node); +int +efc_send_pdisc(struct efc_node *node); +int +efc_send_scr(struct efc_node *node); +int +efc_ns_send_rftid(struct efc_node *node); +int +efc_ns_send_rffid(struct efc_node *node); +int +efc_ns_send_gidpt(struct efc_node *node); +void +efc_els_io_cleanup(struct efc_els_io_req *els, int evt, void *arg); + +/* ELS acc send */ +int +efc_send_ls_acc(struct efc_node *node, u32 ox_id); +int +efc_send_ls_rjt(struct efc_node *node, u32 ox_id, u32 reason_cod, + u32 reason_code_expl, u32 vendor_unique); +int +efc_send_flogi_p2p_acc(struct efc_node *node, u32 ox_id, u32 s_id); +int +efc_send_flogi_acc(struct efc_node *node, u32 ox_id, u32 is_fport); +int +efc_send_plogi_acc(struct efc_node *node, u32 ox_id); +int +efc_send_prli_acc(struct efc_node *node, u32 ox_id); +int +efc_send_logo_acc(struct efc_node *node, u32 ox_id); +int +efc_send_prlo_acc(struct efc_node *node, u32 ox_id); +int +efc_send_adisc_acc(struct efc_node *node, u32 ox_id); + +int +efc_bls_send_acc_hdr(struct efc *efc, struct efc_node *node, + struct fc_frame_header *hdr); +int +efc_bls_send_rjt_hdr(struct efc_els_io_req *io, struct fc_frame_header *hdr); + +int +efc_els_io_list_empty(struct efc_node *node, struct list_head *list); + +/* CT */ +int +efc_send_ct_rsp(struct efc *efc, struct efc_node *node, u16 ox_id, + struct fc_ct_hdr *ct_hdr, u32 cmd_rsp_code, u32 reason_code, + u32 reason_code_explanation); + +int +efc_send_bls_acc(struct efc_node *node, struct fc_frame_header *hdr); + +#endif /* __EFC_ELS_H__ */