netdev - [PATCH net-next 2/2] qed: Add API for flashing the nvm attributes.

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

Date:   Tue, 23 Jul 2019 21:51:41 -0700
From:   Sudarsana Reddy Kalluru <skalluru@...vell.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <mkalderon@...vell.com>,
        <aelior@...vell.com>
Subject: [PATCH net-next 2/2] qed: Add API for flashing the nvm attributes.

The patch adds driver interface for reading the NVM config request and
update the attributes on nvm config flash partition.

Signed-off-by: Sudarsana Reddy Kalluru <skalluru@...vell.com>
Signed-off-by: Ariel Elior <aelior@...vell.com>
---
 drivers/net/ethernet/qlogic/qed/qed_main.c | 65 ++++++++++++++++++++++++++++++
 include/linux/qed/qed_if.h                 |  1 +
 2 files changed, 66 insertions(+)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 829dd60..54f00d2 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -67,6 +67,8 @@
 #define QED_ROCE_QPS			(8192)
 #define QED_ROCE_DPIS			(8)
 #define QED_RDMA_SRQS                   QED_ROCE_QPS
+#define QED_NVM_CFG_SET_FLAGS		0xE
+#define QED_NVM_CFG_SET_PF_FLAGS	0x1E
 
 static char version[] =
 	"QLogic FastLinQ 4xxxx Core Module qed " DRV_MODULE_VERSION "\n";
@@ -2227,6 +2229,66 @@ static int qed_nvm_flash_image_validate(struct qed_dev *cdev,
 	return 0;
 }
 
+/* Binary file format -
+ *     /----------------------------------------------------------------------\
+ * 0B  |                       0x5 [command index]                            |
+ * 4B  | Entity ID     | Reserved        |  Number of config attributes       |
+ * 8B  | Config ID                       | Length        | Value              |
+ *     |                                                                      |
+ *     \----------------------------------------------------------------------/
+ * There can be several Cfg_id-Length-Value sets as specified by 'Number of...'.
+ * Entity ID - A non zero entity value for which the config need to be updated.
+ */
+static int qed_nvm_flash_cfg_write(struct qed_dev *cdev, const u8 **data)
+{
+	struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
+	u8 entity_id, len, buf[32];
+	struct qed_ptt *ptt;
+	u16 cfg_id, count;
+	int rc = 0, i;
+	u32 flags;
+
+	ptt = qed_ptt_acquire(hwfn);
+	if (!ptt)
+		return -EAGAIN;
+
+	/* NVM CFG ID attribute header */
+	*data += 4;
+	entity_id = **data;
+	*data += 2;
+	count = *((u16 *)*data);
+	*data += 2;
+
+	DP_VERBOSE(cdev, NETIF_MSG_DRV,
+		   "Read config ids: entity id %02x num _attrs = %0d\n",
+		   entity_id, count);
+	/* NVM CFG ID attributes */
+	for (i = 0; i < count; i++) {
+		cfg_id = *((u16 *)*data);
+		*data += 2;
+		len = **data;
+		(*data)++;
+		memcpy(buf, *data, len);
+		*data += len;
+
+		flags = entity_id ? QED_NVM_CFG_SET_PF_FLAGS :
+			QED_NVM_CFG_SET_FLAGS;
+
+		DP_VERBOSE(cdev, NETIF_MSG_DRV,
+			   "cfg_id = %d len = %d\n", cfg_id, len);
+		rc = qed_mcp_nvm_set_cfg(hwfn, ptt, cfg_id, entity_id, flags,
+					 buf, len);
+		if (rc) {
+			DP_ERR(cdev, "Error %d configuring %d\n", rc, cfg_id);
+			break;
+		}
+	}
+
+	qed_ptt_release(hwfn, ptt);
+
+	return rc;
+}
+
 static int qed_nvm_flash(struct qed_dev *cdev, const char *name)
 {
 	const struct firmware *image;
@@ -2268,6 +2330,9 @@ static int qed_nvm_flash(struct qed_dev *cdev, const char *name)
 			rc = qed_nvm_flash_image_access(cdev, &data,
 							&check_resp);
 			break;
+		case QED_NVM_FLASH_CMD_NVM_CFG_ID:
+			rc = qed_nvm_flash_cfg_write(cdev, &data);
+			break;
 		default:
 			DP_ERR(cdev, "Unknown command %08x\n", cmd_type);
 			rc = -EINVAL;
diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index eef02e6..23805ea 100644
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -804,6 +804,7 @@ enum qed_nvm_flash_cmd {
 	QED_NVM_FLASH_CMD_FILE_DATA = 0x2,
 	QED_NVM_FLASH_CMD_FILE_START = 0x3,
 	QED_NVM_FLASH_CMD_NVM_CHANGE = 0x4,
+	QED_NVM_FLASH_CMD_NVM_CFG_ID = 0x5,
 	QED_NVM_FLASH_CMD_NVM_MAX,
 };
 
-- 
1.8.3.1