From patchwork Tue Jun 30 10:22:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 11633665 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 31CAD618 for ; Tue, 30 Jun 2020 10:23:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06A9520771 for ; Tue, 30 Jun 2020 10:23:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=marvell.com header.i=@marvell.com header.b="f2KhTG/X" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732461AbgF3KXa (ORCPT ); Tue, 30 Jun 2020 06:23:30 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:56124 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732500AbgF3KXW (ORCPT ); Tue, 30 Jun 2020 06:23:22 -0400 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 05UAK88l010467 for ; Tue, 30 Jun 2020 03:23:20 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0818; bh=DNRZp+l85wGBHCnG9ZuciMVBF9J4WGqQWHoSMlzSyEQ=; b=f2KhTG/XEuqzwuilLCgGn/qRsVUPA+r7v/JVbsl4VhXkK7gt7pL2jYNNEQLNp3iHYQEb MNOHkUVe+C7A3rqUhbNHio5S9s06ZXLLit/569F/6xOgfeaznt867RBLoxUHAtFh/BhX Lk1yIEGjc6usmenVs0KJjg/kIbpDZwTrcUQpwVZJG2yLh3Ch54Cp+STxOOWs08Qyi43b Nvqbl34OmwarNnjAnQZFtdsqAWtTvJwuN5ffciYYERZdlFURjPF6n/RkpGIkWMJYALeX 7AAWYGxxeDH5bEIZmCT/Q9JX4PFliV2/4mdt2PuwpzsckjJEL3XyzcLkH/h8lKXLq+Tl tQ== Received: from sc-exch04.marvell.com ([199.233.58.184]) by mx0b-0016f401.pphosted.com with ESMTP id 31x5mnk66q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Tue, 30 Jun 2020 03:23:20 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 30 Jun 2020 03:23:18 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 30 Jun 2020 03:23:18 -0700 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 64D563F703F; Tue, 30 Jun 2020 03:23:18 -0700 (PDT) Received: from dut1171.mv.qlogic.com (localhost [127.0.0.1]) by dut1171.mv.qlogic.com (8.14.7/8.14.7) with ESMTP id 05UANIX0029707; Tue, 30 Jun 2020 03:23:18 -0700 Received: (from root@localhost) by dut1171.mv.qlogic.com (8.14.7/8.14.7/Submit) id 05UANI8d029698; Tue, 30 Jun 2020 03:23:18 -0700 From: Nilesh Javali To: CC: , Subject: [PATCH v4 1/2] qla2xxx: Change in PUREX to handle FPIN ELS requests. Date: Tue, 30 Jun 2020 03:22:28 -0700 Message-ID: <20200630102229.29660-2-njavali@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20200630102229.29660-1-njavali@marvell.com> References: <20200630102229.29660-1-njavali@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-06-30_04:2020-06-30,2020-06-29 signatures=0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Shyam Sundar SAN Congestion Management generates ELS pkts whose size can vary, and be > 64 bytes. Change the purex handling code to support non standard ELS pkt size. Signed-off-by: Shyam Sundar Signed-off-by: Arun Easi Signed-off-by: Nilesh Javali Reviewed-by: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_def.h | 15 ++++- drivers/scsi/qla2xxx/qla_gbl.h | 3 +- drivers/scsi/qla2xxx/qla_isr.c | 116 ++++++++++++++++++++++++--------- drivers/scsi/qla2xxx/qla_mbx.c | 22 +++++-- drivers/scsi/qla2xxx/qla_os.c | 19 ++++-- include/uapi/scsi/fc/fc_els.h | 2 + 6 files changed, 134 insertions(+), 43 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 172ea4e5887d..3c1fef7e052e 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -34,6 +34,8 @@ #include #include +#include + /* Big endian Fibre Channel S_ID (source ID) or D_ID (destination ID). */ typedef struct { uint8_t domain; @@ -1269,7 +1271,6 @@ static inline bool qla2xxx_is_valid_mbs(unsigned int mbs) #define RNID_TYPE_ASIC_TEMP 0xC #define ELS_CMD_MAP_SIZE 32 -#define ELS_COMMAND_RDP 0x18 /* * Firmware state codes from get firmware state mailbox command @@ -4487,10 +4488,19 @@ struct active_regions { #define QLA_SET_DATA_RATE_NOLR 1 #define QLA_SET_DATA_RATE_LR 2 /* Set speed and initiate LR */ +#define QLA_DEFAULT_PAYLOAD_SIZE 64 +/* + * This item might be allocated with a size > sizeof(struct purex_item). + * The "size" variable gives the size of the payload (which + * is variable) starting at "iocb". + */ struct purex_item { struct list_head list; struct scsi_qla_host *vha; - void (*process_item)(struct scsi_qla_host *vha, void *pkt); + void (*process_item)(struct scsi_qla_host *vha, + struct purex_item *pkt); + atomic_t in_use; + uint16_t size; struct { uint8_t iocb[64]; } iocb; @@ -4690,6 +4700,7 @@ typedef struct scsi_qla_host { struct list_head head; spinlock_t lock; } purex_list; + struct purex_item default_item; struct name_list_extended gnl; /* Count of active session/fcport */ diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index f62b71e47581..54d82f7d478f 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -229,7 +229,8 @@ void qla2x00_handle_login_done_event(struct scsi_qla_host *, fc_port_t *, int qla24xx_post_gnl_work(struct scsi_qla_host *, fc_port_t *); int qla24xx_post_relogin_work(struct scsi_qla_host *vha); void qla2x00_wait_for_sess_deletion(scsi_qla_host_t *); -void qla24xx_process_purex_rdp(struct scsi_qla_host *vha, void *pkt); +void qla24xx_process_purex_rdp(struct scsi_qla_host *vha, + struct purex_item *pkt); /* * Global Functions in qla_mid.c source file. diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index a9e8513e1cf1..6957047a5b02 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -31,35 +31,11 @@ const char *const port_state_str[] = { "ONLINE" }; -static void qla24xx_purex_iocb(scsi_qla_host_t *vha, void *pkt, - void (*process_item)(struct scsi_qla_host *vha, void *pkt)) -{ - struct purex_list *list = &vha->purex_list; - struct purex_item *item; - ulong flags; - - item = kzalloc(sizeof(*item), GFP_KERNEL); - if (!item) { - ql_log(ql_log_warn, vha, 0x5092, - ">> Failed allocate purex list item.\n"); - return; - } - - item->vha = vha; - item->process_item = process_item; - memcpy(&item->iocb, pkt, sizeof(item->iocb)); - - spin_lock_irqsave(&list->lock, flags); - list_add_tail(&item->list, &list->head); - spin_unlock_irqrestore(&list->lock, flags); - - set_bit(PROCESS_PUREX_IOCB, &vha->dpc_flags); -} - static void -qla24xx_process_abts(struct scsi_qla_host *vha, void *pkt) +qla24xx_process_abts(struct scsi_qla_host *vha, struct purex_item *pkt) { - struct abts_entry_24xx *abts = pkt; + struct abts_entry_24xx *abts = + (struct abts_entry_24xx *)&pkt->iocb; struct qla_hw_data *ha = vha->hw; struct els_entry_24xx *rsp_els; struct abts_entry_24xx *abts_rsp; @@ -790,6 +766,74 @@ qla27xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb) } } +struct purex_item * +qla24xx_alloc_purex_item(scsi_qla_host_t *vha, uint16_t size) +{ + struct purex_item *item = NULL; + uint8_t item_hdr_size = sizeof(*item); + + if (size > QLA_DEFAULT_PAYLOAD_SIZE) { + item = kzalloc(item_hdr_size + + (size - QLA_DEFAULT_PAYLOAD_SIZE), GFP_ATOMIC); + } else { + if (atomic_inc_return(&vha->default_item.in_use) == 1) { + item = &vha->default_item; + goto initialize_purex_header; + } else { + item = kzalloc(item_hdr_size, GFP_ATOMIC); + } + } + if (!item) { + ql_log(ql_log_warn, vha, 0x5092, + ">> Failed allocate purex list item.\n"); + + return NULL; + } + +initialize_purex_header: + item->vha = vha; + item->size = size; + return item; +} + +static void +qla24xx_queue_purex_item(scsi_qla_host_t *vha, struct purex_item *pkt, + void (*process_item)(struct scsi_qla_host *vha, + struct purex_item *pkt)) +{ + struct purex_list *list = &vha->purex_list; + ulong flags; + + pkt->process_item = process_item; + + spin_lock_irqsave(&list->lock, flags); + list_add_tail(&pkt->list, &list->head); + spin_unlock_irqrestore(&list->lock, flags); + + set_bit(PROCESS_PUREX_IOCB, &vha->dpc_flags); +} + +/** + * qla24xx_copy_std_pkt() - Copy over purex ELS which is + * contained in a single IOCB. + * purex packet. + * @vha: SCSI driver HA context + * @pkt: ELS packet + */ +struct purex_item +*qla24xx_copy_std_pkt(struct scsi_qla_host *vha, void *pkt) +{ + struct purex_item *item; + + item = qla24xx_alloc_purex_item(vha, + QLA_DEFAULT_PAYLOAD_SIZE); + if (!item) + return item; + + memcpy(&item->iocb, pkt, sizeof(item->iocb)); + return item; +} + /** * qla2x00_async_event() - Process aynchronous events. * @vha: SCSI driver HA context @@ -3233,6 +3277,7 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, { struct sts_entry_24xx *pkt; struct qla_hw_data *ha = vha->hw; + struct purex_item *pure_item; if (!ha->flags.fw_started) return; @@ -3284,8 +3329,12 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, break; case ABTS_RECV_24XX: if (qla_ini_mode_enabled(vha)) { - qla24xx_purex_iocb(vha, pkt, - qla24xx_process_abts); + pure_item = qla24xx_copy_std_pkt(vha, pkt); + if (!pure_item) + break; + + qla24xx_queue_purex_item(vha, pure_item, + qla24xx_process_abts); break; } if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || @@ -3336,13 +3385,18 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, { struct purex_entry_24xx *purex = (void *)pkt; - if (purex->els_frame_payload[3] != ELS_COMMAND_RDP) { + if (purex->els_frame_payload[3] != ELS_RDP) { ql_dbg(ql_dbg_init, vha, 0x5091, "Discarding ELS Request opcode %#x...\n", purex->els_frame_payload[3]); break; } - qla24xx_purex_iocb(vha, pkt, qla24xx_process_purex_rdp); + pure_item = qla24xx_copy_std_pkt(vha, pkt); + if (!pure_item) + break; + + qla24xx_queue_purex_item(vha, pure_item, + qla24xx_process_purex_rdp); break; } default: diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 9fd83d1bffe0..7d00db8ac5d9 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -59,6 +59,7 @@ static struct rom_cmd { { MBC_IOCB_COMMAND_A64 }, { MBC_GET_ADAPTER_LOOP_ID }, { MBC_READ_SFP }, + { MBC_SET_RNID_PARAMS }, { MBC_GET_RNID_PARAMS }, { MBC_GET_SET_ZIO_THRESHOLD }, }; @@ -4867,6 +4868,7 @@ qla24xx_get_port_login_templ(scsi_qla_host_t *vha, dma_addr_t buf_dma, return rval; } +#define PUREX_CMD_COUNT 2 int qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha) { @@ -4875,12 +4877,12 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha) mbx_cmd_t *mcp = &mc; uint8_t *els_cmd_map; dma_addr_t els_cmd_map_dma; - uint cmd_opcode = ELS_COMMAND_RDP; - uint index = cmd_opcode / 8; - uint bit = cmd_opcode % 8; + uint8_t cmd_opcode[PUREX_CMD_COUNT]; + uint8_t i, index, purex_bit; struct qla_hw_data *ha = vha->hw; - if (!IS_QLA25XX(ha) && !IS_QLA2031(ha) && !IS_QLA27XX(ha)) + if (!IS_QLA25XX(ha) && !IS_QLA2031(ha) && + !IS_QLA27XX(ha) && !IS_QLA28XX(ha)) return QLA_SUCCESS; ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1197, @@ -4896,7 +4898,17 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha) memset(els_cmd_map, 0, ELS_CMD_MAP_SIZE); - els_cmd_map[index] |= 1 << bit; + memset(els_cmd_map, 0, ELS_CMD_MAP_SIZE); + + /* List of Purex ELS */ + cmd_opcode[0] = ELS_FPIN; + cmd_opcode[1] = ELS_RDP; + + for (i = 0; i < PUREX_CMD_COUNT; i++) { + index = cmd_opcode[i] / 8; + purex_bit = cmd_opcode[i] % 8; + els_cmd_map[index] |= 1 << purex_bit; + } mcp->mb[0] = MBC_SET_RNID_PARAMS; mcp->mb[1] = RNID_TYPE_ELS_CMD << 8; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 382e1f977d01..007f39128dbf 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -5891,10 +5891,12 @@ qla25xx_rdp_port_speed_currently(struct qla_hw_data *ha) * vha: SCSI qla host * purex: RDP request received by HBA */ -void qla24xx_process_purex_rdp(struct scsi_qla_host *vha, void *pkt) +void qla24xx_process_purex_rdp(struct scsi_qla_host *vha, + struct purex_item *item) { struct qla_hw_data *ha = vha->hw; - struct purex_entry_24xx *purex = pkt; + struct purex_entry_24xx *purex = + (struct purex_entry_24xx *)&item->iocb; dma_addr_t rsp_els_dma; dma_addr_t rsp_payload_dma; dma_addr_t stat_dma; @@ -6304,6 +6306,15 @@ void qla24xx_process_purex_rdp(struct scsi_qla_host *vha, void *pkt) rsp_els, rsp_els_dma); } +void +qla24xx_free_purex_item(struct purex_item *item) +{ + if (item == &item->vha->default_item) + memset(&item->vha->default_item, 0, sizeof(struct purex_item)); + else + kfree(item); +} + void qla24xx_process_purex_list(struct purex_list *list) { struct list_head head = LIST_HEAD_INIT(head); @@ -6316,8 +6327,8 @@ void qla24xx_process_purex_list(struct purex_list *list) list_for_each_entry_safe(item, next, &head, list) { list_del(&item->list); - item->process_item(item->vha, &item->iocb); - kfree(item); + item->process_item(item->vha, item); + qla24xx_free_purex_item(item); } } diff --git a/include/uapi/scsi/fc/fc_els.h b/include/uapi/scsi/fc/fc_els.h index 66318c44acd7..8c704e510e39 100644 --- a/include/uapi/scsi/fc/fc_els.h +++ b/include/uapi/scsi/fc/fc_els.h @@ -41,6 +41,7 @@ enum fc_els_cmd { ELS_REC = 0x13, /* read exchange concise */ ELS_SRR = 0x14, /* sequence retransmission request */ ELS_FPIN = 0x16, /* Fabric Performance Impact Notification */ + ELS_RDP = 0x18, /* Read Diagnostic Parameters */ ELS_RDF = 0x19, /* Register Diagnostic Functions */ ELS_PRLI = 0x20, /* process login */ ELS_PRLO = 0x21, /* process logout */ @@ -110,6 +111,7 @@ enum fc_els_cmd { [ELS_REC] = "REC", \ [ELS_SRR] = "SRR", \ [ELS_FPIN] = "FPIN", \ + [ELS_RDP] = "RDP", \ [ELS_RDF] = "RDF", \ [ELS_PRLI] = "PRLI", \ [ELS_PRLO] = "PRLO", \