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qed: implement devlink dump 

Gather and push out full device dump to devlink.
Device dump is the same as with `ethtool -d`, but now its generated
exactly at the moment bad thing happens.

Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Igor Russkikh 2020-08-23 14:19:32 +03:00 committed by David S. Miller
parent b228cb1602
commit 27fed78737
1 changed files with 43 additions and 0 deletions
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43
drivers/net/ethernet/qlogic/qed/qed_devlink.c
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@ -6,6 +6,7 @@
#include <linux/kernel.h>
#include <linux/qed/qed_if.h>
#include <linux/vmalloc.h>
#include "qed.h"
#include "qed_devlink.h"
@ -32,6 +33,47 @@ int qed_report_fatal_error(struct devlink *devlink, enum qed_hw_err_type err_typ
return 0;
}
static int
qed_fw_fatal_reporter_dump(struct devlink_health_reporter *reporter,
struct devlink_fmsg *fmsg, void *priv_ctx,
struct netlink_ext_ack *extack)
{
struct qed_devlink *qdl = devlink_health_reporter_priv(reporter);
struct qed_fw_fatal_ctx *fw_fatal_ctx = priv_ctx;
struct qed_dev *cdev = qdl->cdev;
u32 dbg_data_buf_size;
u8 *p_dbg_data_buf;
int err;
/* Having context means that was a dump request after fatal,
* so we enable extra debugging while gathering the dump,
* just in case
*/
cdev->print_dbg_data = fw_fatal_ctx ? true : false;
dbg_data_buf_size = qed_dbg_all_data_size(cdev);
p_dbg_data_buf = vzalloc(dbg_data_buf_size);
if (!p_dbg_data_buf) {
DP_NOTICE(cdev,
"Failed to allocate memory for a debug data buffer\n");
return -ENOMEM;
}
err = qed_dbg_all_data(cdev, p_dbg_data_buf);
if (err) {
DP_NOTICE(cdev, "Failed to obtain debug data\n");
vfree(p_dbg_data_buf);
return err;
}
err = devlink_fmsg_binary_pair_put(fmsg, "dump_data",
p_dbg_data_buf, dbg_data_buf_size);
vfree(p_dbg_data_buf);
return err;
}
static int
qed_fw_fatal_reporter_recover(struct devlink_health_reporter *reporter,
void *priv_ctx,
@ -48,6 +90,7 @@ qed_fw_fatal_reporter_recover(struct devlink_health_reporter *reporter,
static const struct devlink_health_reporter_ops qed_fw_fatal_reporter_ops = {
.name = "fw_fatal",
.recover = qed_fw_fatal_reporter_recover,
.dump = qed_fw_fatal_reporter_dump,
};
#define QED_REPORTER_FW_GRACEFUL_PERIOD 1200000