Commit 27fed787 authored by Igor Russkikh's avatar Igor Russkikh Committed by David S. Miller
Browse files

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: default avatarIgor Russkikh <irusskikh@marvell.com>
Signed-off-by: default avatarAlexander Lobakin <alobakin@marvell.com>
Signed-off-by: default avatarMichal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b228cb16

drivers/net/ethernet/qlogic/qed/qed_devlink.c

+43 −0
Original line number Diff line number Diff line
@@ -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