netdev - [PATCH 08/12] bnxt: Search VPD with pci_vpd_find_ro_info

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Sun, 22 Aug 2021 15:56:24 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>
Cc:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH 08/12] bnxt: Search VPD with pci_vpd_find_ro_info_keyword()

Use pci_vpd_find_ro_info_keyword() to search for keywords in VPD to
simplify the code.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 38 ++++++-----------------
 1 file changed, 9 insertions(+), 29 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 00a9b7126..5df00a520 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -13174,8 +13174,8 @@ static int bnxt_init_mac_addr(struct bnxt *bp)
 static void bnxt_vpd_read_info(struct bnxt *bp)
 {
 	struct pci_dev *pdev = bp->pdev;
-	int i, len, pos, ro_size, size;
-	unsigned int vpd_size;
+	unsigned int vpd_size, kw_len;
+	int pos, size;
 	u8 *vpd_data;
 
 	vpd_data = pci_vpd_alloc(pdev, &vpd_size);
@@ -13184,42 +13184,22 @@ static void bnxt_vpd_read_info(struct bnxt *bp)
 		return;
 	}
 
-	i = pci_vpd_find_tag(vpd_data, vpd_size, PCI_VPD_LRDT_RO_DATA);
-	if (i < 0) {
-		netdev_err(bp->dev, "VPD READ-Only not found\n");
-		goto exit;
-	}
-
-	ro_size = pci_vpd_lrdt_size(&vpd_data[i]);
-	i += PCI_VPD_LRDT_TAG_SIZE;
-	if (i + ro_size > vpd_size)
-		goto exit;
-
-	pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
-					PCI_VPD_RO_KEYWORD_PARTNO);
+	pos = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
+					   PCI_VPD_RO_KEYWORD_PARTNO, &kw_len);
 	if (pos < 0)
 		goto read_sn;
 
-	len = pci_vpd_info_field_size(&vpd_data[pos]);
-	pos += PCI_VPD_INFO_FLD_HDR_SIZE;
-	if (len + pos > vpd_size)
-		goto read_sn;
-
-	size = min(len, BNXT_VPD_FLD_LEN - 1);
+	size = min_t(int, kw_len, BNXT_VPD_FLD_LEN - 1);
 	memcpy(bp->board_partno, &vpd_data[pos], size);
 
 read_sn:
-	pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
-					PCI_VPD_RO_KEYWORD_SERIALNO);
+	pos = pci_vpd_find_ro_info_keyword(vpd_data, vpd_size,
+					   PCI_VPD_RO_KEYWORD_SERIALNO,
+					   &kw_len);
 	if (pos < 0)
 		goto exit;
 
-	len = pci_vpd_info_field_size(&vpd_data[pos]);
-	pos += PCI_VPD_INFO_FLD_HDR_SIZE;
-	if (len + pos > vpd_size)
-		goto exit;
-
-	size = min(len, BNXT_VPD_FLD_LEN - 1);
+	size = min_t(int, kw_len, BNXT_VPD_FLD_LEN - 1);
 	memcpy(bp->board_serialno, &vpd_data[pos], size);
 exit:
 	kfree(vpd_data);
-- 
2.33.0