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| author | Igor Russkikh <irusskikh@marvell.com> | 2020-08-23 14:19:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-08-24 18:01:33 -0700 |
| commit | 27fed78737aeb692efe525d74fcb54dbe9d67973 (patch) | |
| tree | 7e71faf6649607d37d03b81dccbbcd44bcda6189 | |
| parent | b228cb1602ead97be5449cb87b68addea0e8243c (diff) | |
| download | linux-27fed78737aeb692efe525d74fcb54dbe9d67973.tar.gz | |
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>
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_devlink.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_devlink.c b/drivers/net/ethernet/qlogic/qed/qed_devlink.c index bc4e40f135ff..cf7f4da68e69 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_devlink.c +++ b/drivers/net/ethernet/qlogic/qed/qed_devlink.c @@ -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" @@ -33,6 +34,47 @@ int qed_report_fatal_error(struct devlink *devlink, enum qed_hw_err_type err_typ } 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, struct netlink_ext_ack *extack) @@ -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 |