From patchwork Thu Aug 1 17:55:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 11071171 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6DBD7746 for ; Thu, 1 Aug 2019 17:57:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C510286AD for ; Thu, 1 Aug 2019 17:57:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50CD528715; Thu, 1 Aug 2019 17:57:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B4907286AD for ; Thu, 1 Aug 2019 17:57:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387944AbfHAR5I (ORCPT ); Thu, 1 Aug 2019 13:57:08 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:45510 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731544AbfHAR5I (ORCPT ); Thu, 1 Aug 2019 13:57:08 -0400 Received: by mail-pg1-f194.google.com with SMTP id o13so34604396pgp.12 for ; Thu, 01 Aug 2019 10:57:07 -0700 (PDT) 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=AVpkL8LCp0VF1cWIPxdVWS1cNHZaX9oeQPH0MuywviY=; b=DT9a6JFjR7gxsdenyuOvdWN0T6I9gdbtPwtROOG+Lx6zpKudgXZmX83CJbNTPs13jx rj2DZ/mhKXP1k1GDrh9xT9QQwa/kueszOWZhHv5DJOFAOAa31sTBbrKC1i5v2zHr+0Vx ETsJxs4vKDUxEJh3QkVQiI84n7FS4Q1AzFBg7cxVcrsth4GGKdSUqdqyZUyIrRf9xcMo ToKOwPTZOjyu+JAR7IUSUSzHcqPUQz/rfuhzALlCmYnZFmK63Ms6ye8/gnaZQXCAbs+t MxCc3o9AMEml8dV4MnGVlsorMCywxIm88so9u8+MR1nV7d6PGz7rFNadHNsdL7ISuPol 6z1Q== X-Gm-Message-State: APjAAAUZJodtqhYlWJB7qFaKc/2EcoavmOzXFeyuoW3Ca+H4UW5LTBc1 IcCYSlJrthe48XKVHf11+H4= X-Google-Smtp-Source: APXvYqxFdzCzwgexYiZhttj3r67XXiYOaiOmjaE/RYWnyGTBdV0AOOj17L3M0QLnmScRLwc48zZXHg== X-Received: by 2002:a63:2a08:: with SMTP id q8mr88098762pgq.415.1564682227278; Thu, 01 Aug 2019 10:57:07 -0700 (PDT) Received: from desktop-bart.svl.corp.google.com ([2620:15c:2cd:202:4308:52a3:24b6:2c60]) by smtp.gmail.com with ESMTPSA id y10sm73144114pfm.66.2019.08.01.10.57.06 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 01 Aug 2019 10:57:06 -0700 (PDT) From: Bart Van Assche To: "Martin K . Petersen" , "James E . J . Bottomley" Cc: linux-scsi@vger.kernel.org, Bart Van Assche , Himanshu Madhani , Giridhar Malavali Subject: [PATCH 34/59] qla2xxx: Check the PCI info string output buffer size Date: Thu, 1 Aug 2019 10:55:49 -0700 Message-Id: <20190801175614.73655-35-bvanassche@acm.org> X-Mailer: git-send-email 2.22.0.770.g0f2c4a37fd-goog In-Reply-To: <20190801175614.73655-1-bvanassche@acm.org> References: <20190801175614.73655-1-bvanassche@acm.org> MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Pass the output buffer size to the code that generates a PCI info string and check the output buffer size while generating a PCI info string. Cc: Himanshu Madhani Cc: Giridhar Malavali Signed-off-by: Bart Van Assche --- drivers/scsi/qla2xxx/qla_attr.c | 3 +- drivers/scsi/qla2xxx/qla_def.h | 2 +- drivers/scsi/qla2xxx/qla_gbl.h | 2 +- drivers/scsi/qla2xxx/qla_mr.c | 8 ++--- drivers/scsi/qla2xxx/qla_os.c | 59 ++++++++++++++------------------- 5 files changed, 32 insertions(+), 42 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index e3de20918efb..e9c449ef515c 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1125,7 +1125,8 @@ qla2x00_pci_info_show(struct device *dev, struct device_attribute *attr, char pci_info[30]; return scnprintf(buf, PAGE_SIZE, "%s\n", - vha->hw->isp_ops->pci_info_str(vha, pci_info)); + vha->hw->isp_ops->pci_info_str(vha, pci_info, + sizeof(pci_info))); } static ssize_t diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 1c6811bd5625..8c8279ef3e32 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3112,7 +3112,7 @@ struct isp_operations { void (*update_fw_options) (struct scsi_qla_host *); int (*load_risc) (struct scsi_qla_host *, uint32_t *); - char * (*pci_info_str) (struct scsi_qla_host *, char *); + char * (*pci_info_str)(struct scsi_qla_host *, char *, size_t); char * (*fw_version_str)(struct scsi_qla_host *, char *, size_t); irq_handler_t intr_handler; diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index fc54e7c86463..2d9664086f15 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -732,7 +732,7 @@ extern int qlafx00_initialize_adapter(struct scsi_qla_host *); extern int qlafx00_soft_reset(scsi_qla_host_t *); extern int qlafx00_chip_diag(scsi_qla_host_t *); extern void qlafx00_config_rings(struct scsi_qla_host *); -extern char *qlafx00_pci_info_str(struct scsi_qla_host *, char *); +extern char *qlafx00_pci_info_str(struct scsi_qla_host *, char *, size_t); extern char *qlafx00_fw_version_str(struct scsi_qla_host *, char *, size_t); extern irqreturn_t qlafx00_intr_handler(int, void *); extern void qlafx00_enable_intrs(struct qla_hw_data *); diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c index 9e3f2f462a2e..759fcfecc310 100644 --- a/drivers/scsi/qla2xxx/qla_mr.c +++ b/drivers/scsi/qla2xxx/qla_mr.c @@ -688,14 +688,12 @@ qlafx00_config_rings(struct scsi_qla_host *vha) } char * -qlafx00_pci_info_str(struct scsi_qla_host *vha, char *str) +qlafx00_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len) { struct qla_hw_data *ha = vha->hw; - if (pci_is_pcie(ha->pdev)) { - strcpy(str, "PCIe iSA"); - return str; - } + if (pci_is_pcie(ha->pdev)) + strlcpy(str, "PCIe iSA", str_len); return str; } diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index cc24af941f7d..927db23695e7 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -536,80 +536,70 @@ static void qla2x00_free_queues(struct qla_hw_data *ha) } static char * -qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str) +qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len) { struct qla_hw_data *ha = vha->hw; - static char *pci_bus_modes[] = { + static const char *const pci_bus_modes[] = { "33", "66", "100", "133", }; uint16_t pci_bus; - strcpy(str, "PCI"); pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9; if (pci_bus) { - strcat(str, "-X ("); - strcat(str, pci_bus_modes[pci_bus]); + snprintf(str, str_len, "PCI-X (%s MHz)", + pci_bus_modes[pci_bus]); } else { pci_bus = (ha->pci_attr & BIT_8) >> 8; - strcat(str, " ("); - strcat(str, pci_bus_modes[pci_bus]); + snprintf(str, str_len, "PCI (%s MHz)", pci_bus_modes[pci_bus]); } - strcat(str, " MHz)"); - return (str); + return str; } static char * -qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str) +qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len) { - static char *pci_bus_modes[] = { "33", "66", "100", "133", }; + static const char *const pci_bus_modes[] = { + "33", "66", "100", "133", + }; struct qla_hw_data *ha = vha->hw; uint32_t pci_bus; if (pci_is_pcie(ha->pdev)) { - char lwstr[6]; uint32_t lstat, lspeed, lwidth; + const char *speed_str; pcie_capability_read_dword(ha->pdev, PCI_EXP_LNKCAP, &lstat); lspeed = lstat & PCI_EXP_LNKCAP_SLS; lwidth = (lstat & PCI_EXP_LNKCAP_MLW) >> 4; - strcpy(str, "PCIe ("); switch (lspeed) { case 1: - strcat(str, "2.5GT/s "); + speed_str = "2.5GT/s"; break; case 2: - strcat(str, "5.0GT/s "); + speed_str = "5.0GT/s"; break; case 3: - strcat(str, "8.0GT/s "); + speed_str = "8.0GT/s"; break; default: - strcat(str, " "); + speed_str = ""; break; } - snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth); - strcat(str, lwstr); + snprintf(str, str_len, "PCIe (%s x%d)", speed_str, lwidth); return str; } - strcpy(str, "PCI"); pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8; - if (pci_bus == 0 || pci_bus == 8) { - strcat(str, " ("); - strcat(str, pci_bus_modes[pci_bus >> 3]); - } else { - strcat(str, "-X "); - if (pci_bus & BIT_2) - strcat(str, "Mode 2"); - else - strcat(str, "Mode 1"); - strcat(str, " ("); - strcat(str, pci_bus_modes[pci_bus & ~BIT_2]); - } - strcat(str, " MHz)"); + if (pci_bus == 0 || pci_bus == 8) + snprintf(str, str_len, "PCI (%s MHz)", + pci_bus_modes[pci_bus >> 3]); + else + snprintf(str, str_len, "PCI-X Mode %d (%s MHz)", + pci_bus & 4 ? 2 : 1, + pci_bus_modes[pci_bus & 3]); return str; } @@ -3452,7 +3442,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) "QLogic %s - %s.\n", ha->model_number, ha->model_desc); ql_log(ql_log_info, base_vha, 0x00fc, "ISP%04X: %s @ %s hdma%c host#=%ld fw=%s.\n", - pdev->device, ha->isp_ops->pci_info_str(base_vha, pci_info), + pdev->device, ha->isp_ops->pci_info_str(base_vha, pci_info, + sizeof(pci_info)), pci_name(pdev), ha->flags.enable_64bit_addressing ? '+' : '-', base_vha->host_no, ha->isp_ops->fw_version_str(base_vha, fw_str, sizeof(fw_str)));