| 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
| ||
|
Message-Id: <1646470482-13763-10-git-send-email-michael.chan@broadcom.com>
Date: Sat, 5 Mar 2022 03:54:42 -0500
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, kuba@...nel.org, gospo@...adcom.com
Subject: [PATCH net-next 9/9] bnxt_en: add an nvm test for hw diagnose
From: Vikas Gupta <vikas.gupta@...adcom.com>
Add an NVM test function for devlink hw reporter.
In this function an NVM VPD area is read followed by
a write. Test result is cached and if it is successful then
the next test can be conducted only after HW_RETEST_MIN_TIME to
avoid frequent writes to the NVM.
Reviewed-by: Edwin Peer <edwin.peer@...adcom.com>
Signed-off-by: Vikas Gupta <vikas.gupta@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 20 ++++-
.../net/ethernet/broadcom/bnxt/bnxt_devlink.c | 82 ++++++++++++++++++-
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 22 ++---
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 7 ++
4 files changed, 113 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index fa0df43ddc1a..9dd878def3c2 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1544,17 +1544,29 @@ struct bnxt_ctx_mem_info {
};
enum bnxt_hw_err {
- BNXT_HW_STATUS_HEALTHY = 0x0,
- BNXT_HW_STATUS_NVM_WRITE_ERR = 0x1,
- BNXT_HW_STATUS_NVM_ERASE_ERR = 0x2,
- BNXT_HW_STATUS_NVM_UNKNOWN_ERR = 0x3,
+ BNXT_HW_STATUS_HEALTHY = 0x0,
+ BNXT_HW_STATUS_NVM_WRITE_ERR = 0x1,
+ BNXT_HW_STATUS_NVM_ERASE_ERR = 0x2,
+ BNXT_HW_STATUS_NVM_UNKNOWN_ERR = 0x3,
+ BNXT_HW_STATUS_NVM_TEST_VPD_ENT_ERR = 0x4,
+ BNXT_HW_STATUS_NVM_TEST_VPD_READ_ERR = 0x5,
+ BNXT_HW_STATUS_NVM_TEST_VPD_WRITE_ERR = 0x6,
+ BNXT_HW_STATUS_NVM_TEST_INCMPL_ERR = 0x7,
};
struct bnxt_hw_health {
u32 nvm_err_address;
u32 nvm_write_errors;
u32 nvm_erase_errors;
+ u32 nvm_test_vpd_ent_errors;
+ u32 nvm_test_vpd_read_errors;
+ u32 nvm_test_vpd_write_errors;
+ u32 nvm_test_incmpl_errors;
u8 synd;
+ /* max a test in a day if previous test was successful */
+#define HW_RETEST_MIN_TIME (1000 * 3600 * 24)
+ u8 nvm_test_result;
+ unsigned long nvm_test_timestamp;
struct devlink_health_reporter *hw_reporter;
};
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index a802bbda1c27..77e55105d645 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -20,6 +20,7 @@
#include "bnxt_ulp.h"
#include "bnxt_ptp.h"
#include "bnxt_coredump.h"
+#include "bnxt_nvm_defs.h" /* NVRAM content constant and structure defs */
static void __bnxt_fw_recover(struct bnxt *bp)
{
@@ -263,20 +264,82 @@ static const char *hw_err_str(u8 synd)
return "nvm erase error";
case BNXT_HW_STATUS_NVM_UNKNOWN_ERR:
return "unrecognized nvm error";
+ case BNXT_HW_STATUS_NVM_TEST_VPD_ENT_ERR:
+ return "nvm test vpd entry error";
+ case BNXT_HW_STATUS_NVM_TEST_VPD_READ_ERR:
+ return "nvm test vpd read error";
+ case BNXT_HW_STATUS_NVM_TEST_VPD_WRITE_ERR:
+ return "nvm test vpd write error";
+ case BNXT_HW_STATUS_NVM_TEST_INCMPL_ERR:
+ return "nvm test incomplete error";
default:
return "unknown hw error";
}
}
+static void bnxt_nvm_test(struct bnxt *bp)
+{
+ struct bnxt_hw_health *h = &bp->hw_health;
+ u32 datalen;
+ u16 index;
+ u8 *buf;
+
+ if (!h->nvm_test_result) {
+ if (!h->nvm_test_timestamp ||
+ time_after(jiffies, h->nvm_test_timestamp +
+ msecs_to_jiffies(HW_RETEST_MIN_TIME)))
+ h->nvm_test_timestamp = jiffies;
+ else
+ return;
+ }
+
+ if (bnxt_find_nvram_item(bp->dev, BNX_DIR_TYPE_VPD,
+ BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE,
+ &index, NULL, &datalen) || !datalen) {
+ h->nvm_test_result = BNXT_HW_STATUS_NVM_TEST_VPD_ENT_ERR;
+ h->nvm_test_vpd_ent_errors++;
+ return;
+ }
+
+ buf = kzalloc(datalen, GFP_KERNEL);
+ if (!buf) {
+ h->nvm_test_result = BNXT_HW_STATUS_NVM_TEST_INCMPL_ERR;
+ h->nvm_test_incmpl_errors++;
+ return;
+ }
+
+ if (bnxt_get_nvram_item(bp->dev, index, 0, datalen, buf)) {
+ h->nvm_test_result = BNXT_HW_STATUS_NVM_TEST_VPD_READ_ERR;
+ h->nvm_test_vpd_read_errors++;
+ goto err;
+ }
+
+ if (bnxt_flash_nvram(bp->dev, BNX_DIR_TYPE_VPD, BNX_DIR_ORDINAL_FIRST,
+ BNX_DIR_EXT_NONE, 0, 0, buf, datalen)) {
+ h->nvm_test_result = BNXT_HW_STATUS_NVM_TEST_VPD_WRITE_ERR;
+ h->nvm_test_vpd_write_errors++;
+ }
+
+err:
+ kfree(buf);
+}
+
static int bnxt_hw_diagnose(struct devlink_health_reporter *reporter,
struct devlink_fmsg *fmsg,
struct netlink_ext_ack *extack)
{
struct bnxt *bp = devlink_health_reporter_priv(reporter);
struct bnxt_hw_health *h = &bp->hw_health;
+ u8 synd = h->synd;
int rc;
- rc = devlink_fmsg_string_pair_put(fmsg, "Status", hw_err_str(h->synd));
+ bnxt_nvm_test(bp);
+ if (h->nvm_test_result) {
+ synd = h->nvm_test_result;
+ devlink_health_report(h->hw_reporter, hw_err_str(synd), NULL);
+ }
+
+ rc = devlink_fmsg_string_pair_put(fmsg, "Status", hw_err_str(synd));
if (rc)
return rc;
rc = devlink_fmsg_u32_pair_put(fmsg, "nvm_write_errors", h->nvm_write_errors);
@@ -285,6 +348,23 @@ static int bnxt_hw_diagnose(struct devlink_health_reporter *reporter,
rc = devlink_fmsg_u32_pair_put(fmsg, "nvm_erase_errors", h->nvm_erase_errors);
if (rc)
return rc;
+ rc = devlink_fmsg_u32_pair_put(fmsg, "nvm_test_vpd_ent_errors",
+ h->nvm_test_vpd_ent_errors);
+ if (rc)
+ return rc;
+ rc = devlink_fmsg_u32_pair_put(fmsg, "nvm_test_vpd_read_errors",
+ h->nvm_test_vpd_read_errors);
+ if (rc)
+ return rc;
+ rc = devlink_fmsg_u32_pair_put(fmsg, "nvm_test_vpd_write_errors",
+ h->nvm_test_vpd_write_errors);
+ if (rc)
+ return rc;
+ rc = devlink_fmsg_u32_pair_put(fmsg, "nvm_test_incomplete_errors",
+ h->nvm_test_incmpl_errors);
+ if (rc)
+ return rc;
+
return 0;
}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index eadaca42ed96..178074795b27 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -2168,14 +2168,10 @@ static void bnxt_print_admin_err(struct bnxt *bp)
netdev_info(bp->dev, "PF does not have admin privileges to flash or reset the device\n");
}
-static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
- u16 ext, u16 *index, u32 *item_length,
- u32 *data_length);
-
-static int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
- u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
- u32 dir_item_len, const u8 *data,
- size_t data_len)
+int bnxt_flash_nvram(struct net_device *dev, u16 dir_type,
+ u16 dir_ordinal, u16 dir_ext, u16 dir_attr,
+ u32 dir_item_len, const u8 *data,
+ size_t data_len)
{
struct bnxt *bp = netdev_priv(dev);
struct hwrm_nvm_write_input *req;
@@ -2819,8 +2815,8 @@ static int bnxt_get_nvram_directory(struct net_device *dev, u32 len, u8 *data)
return rc;
}
-static int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
- u32 length, u8 *data)
+int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
+ u32 length, u8 *data)
{
struct bnxt *bp = netdev_priv(dev);
int rc;
@@ -2854,9 +2850,9 @@ static int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
return rc;
}
-static int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
- u16 ext, u16 *index, u32 *item_length,
- u32 *data_length)
+int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal,
+ u16 ext, u16 *index, u32 *item_length,
+ u32 *data_length)
{
struct hwrm_nvm_find_dir_entry_output *output;
struct hwrm_nvm_find_dir_entry_input *req;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
index 6aa44840f13a..2593e0049582 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
@@ -56,6 +56,13 @@ int bnxt_hwrm_firmware_reset(struct net_device *dev, u8 proc_type,
int bnxt_flash_package_from_fw_obj(struct net_device *dev, const struct firmware *fw,
u32 install_type);
int bnxt_get_pkginfo(struct net_device *dev, char *ver, int size);
+int bnxt_find_nvram_item(struct net_device *dev, u16 type, u16 ordinal, u16 ext,
+ u16 *index, u32 *item_length, u32 *data_length);
+int bnxt_get_nvram_item(struct net_device *dev, u32 index, u32 offset,
+ u32 length, u8 *data);
+int bnxt_flash_nvram(struct net_device *dev, u16 dir_type, u16 dir_ordinal,
+ u16 dir_ext, u16 dir_attr, u32 dir_item_len,
+ const u8 *data, size_t data_len);
void bnxt_ethtool_init(struct bnxt *bp);
void bnxt_ethtool_free(struct bnxt *bp);
--
2.18.1
Download attachment "smime.p7s" of type "application/pkcs7-signature" (4209 bytes)
Powered by blists - more mailing lists