Commit 084346be authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'Update-devlink-binary-output' 



Aya Levin says:

====================
Update devlink binary output

This series changes the devlink binary interface:
-The first patch forces binary values to be enclosed in an array. In
 addition, devlink_fmsg_binary_pair_put breaks the binary value into
 chunks to comply with devlink's restriction for value length.
-The second patch removes redundant code and uses the fixed devlink
 interface (devlink_fmsg_binary_pair_put).
-The third patch make self test to use the updated devlink
 interface.
-The fourth, adds a verification of dumping a very large binary
 content. This test verifies breaking the data into chunks in a valid
 JSON output.

Series was generated against net-next commit:
ca22d697 Merge branch 'stmmac-next'
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 6c086702 ff18176a

drivers/net/ethernet/mellanox/mlx5/core/health.c

+1 −17
Original line number Diff line number Diff line
@@ -555,7 +555,6 @@ mlx5_fw_fatal_reporter_recover(struct devlink_health_reporter *reporter, 
	return mlx5_health_try_recover(dev);

}



#define MLX5_CR_DUMP_CHUNK_SIZE 256

static int

mlx5_fw_fatal_reporter_dump(struct devlink_health_reporter *reporter,

			    struct devlink_fmsg *fmsg, void *priv_ctx,
@@ -564,8 +563,6 @@ mlx5_fw_fatal_reporter_dump(struct devlink_health_reporter *reporter, 
	struct mlx5_core_dev *dev = devlink_health_reporter_priv(reporter);

	u32 crdump_size = dev->priv.health.crdump_size;

	u32 *cr_data;

	u32 data_size;

	u32 offset;

	int err;



	if (!mlx5_core_is_pf(dev))
@@ -586,20 +583,7 @@ mlx5_fw_fatal_reporter_dump(struct devlink_health_reporter *reporter, 
			goto free_data;

	}



	err = devlink_fmsg_arr_pair_nest_start(fmsg, "crdump_data");

	if (err)

		goto free_data;

	for (offset = 0; offset < crdump_size; offset += data_size) {

		if (crdump_size - offset < MLX5_CR_DUMP_CHUNK_SIZE)

			data_size = crdump_size - offset;

		else

			data_size = MLX5_CR_DUMP_CHUNK_SIZE;

		err = devlink_fmsg_binary_put(fmsg, (char *)cr_data + offset,

					      data_size);

		if (err)

			goto free_data;

	}

	err = devlink_fmsg_arr_pair_nest_end(fmsg);

	err = devlink_fmsg_binary_pair_put(fmsg, "crdump_data", cr_data, crdump_size);



free_data:

	kvfree(cr_data);

drivers/net/netdevsim/health.c

+1 −7
Original line number Diff line number Diff line
@@ -82,18 +82,12 @@ static int nsim_dev_dummy_fmsg_put(struct devlink_fmsg *fmsg, u32 binary_len) 
	if (err)

		return err;



	err = devlink_fmsg_arr_pair_nest_start(fmsg, "test_binary");

	if (err)

		return err;

	binary = kmalloc(binary_len, GFP_KERNEL);

	if (!binary)

		return -ENOMEM;

	get_random_bytes(binary, binary_len);

	err = devlink_fmsg_binary_put(fmsg, binary, binary_len);

	err = devlink_fmsg_binary_pair_put(fmsg, "test_binary", binary, binary_len);

	kfree(binary);

	if (err)

		return err;

	err = devlink_fmsg_arr_pair_nest_end(fmsg);

	if (err)

		return err;

include/net/devlink.h

+1 −3
Original line number Diff line number Diff line
@@ -967,8 +967,6 @@ int devlink_fmsg_u8_put(struct devlink_fmsg *fmsg, u8 value); 
int devlink_fmsg_u32_put(struct devlink_fmsg *fmsg, u32 value);

int devlink_fmsg_u64_put(struct devlink_fmsg *fmsg, u64 value);

int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value);

int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,

			    u16 value_len);



int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,

			       bool value);
@@ -981,7 +979,7 @@ int devlink_fmsg_u64_pair_put(struct devlink_fmsg *fmsg, const char *name, 
int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name,

				 const char *value);

int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,

				 const void *value, u16 value_len);

				 const void *value, u32 value_len);



struct devlink_health_reporter *

devlink_health_reporter_create(struct devlink *devlink,

net/core/devlink.c

+15 −9
Original line number Diff line number Diff line
@@ -4414,12 +4414,11 @@ int devlink_fmsg_string_put(struct devlink_fmsg *fmsg, const char *value) 
}

EXPORT_SYMBOL_GPL(devlink_fmsg_string_put);



int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,

static int devlink_fmsg_binary_put(struct devlink_fmsg *fmsg, const void *value,

				   u16 value_len)

{

	return devlink_fmsg_put_value(fmsg, value, value_len, NLA_BINARY);

}

EXPORT_SYMBOL_GPL(devlink_fmsg_binary_put);



int devlink_fmsg_bool_pair_put(struct devlink_fmsg *fmsg, const char *name,

			       bool value)
@@ -4527,19 +4526,26 @@ int devlink_fmsg_string_pair_put(struct devlink_fmsg *fmsg, const char *name, 
EXPORT_SYMBOL_GPL(devlink_fmsg_string_pair_put);



int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name,

				 const void *value, u16 value_len)

				 const void *value, u32 value_len)

{

	u32 data_size;

	u32 offset;

	int err;



	err = devlink_fmsg_pair_nest_start(fmsg, name);

	err = devlink_fmsg_arr_pair_nest_start(fmsg, name);

	if (err)

		return err;



	err = devlink_fmsg_binary_put(fmsg, value, value_len);

	for (offset = 0; offset < value_len; offset += data_size) {

		data_size = value_len - offset;

		if (data_size > DEVLINK_FMSG_MAX_SIZE)

			data_size = DEVLINK_FMSG_MAX_SIZE;

		err = devlink_fmsg_binary_put(fmsg, value + offset, data_size);

		if (err)

			return err;

	}



	err = devlink_fmsg_pair_nest_end(fmsg);

	err = devlink_fmsg_arr_pair_nest_end(fmsg);

	if (err)

		return err;

tools/testing/selftests/drivers/net/netdevsim/devlink.sh

+9 −0
Original line number Diff line number Diff line
@@ -431,6 +431,15 @@ dummy_reporter_test() 


	check_reporter_info dummy healthy 3 3 10 true



	echo 8192> $DEBUGFS_DIR/health/binary_len

	check_fail $? "Failed set dummy reporter binary len to 8192"



	local dump=$(devlink health dump show $DL_HANDLE reporter dummy -j)

	check_err $? "Failed show dump of dummy reporter"



	devlink health dump clear $DL_HANDLE reporter dummy

	check_err $? "Failed clear dump of dummy reporter"



	log_test "dummy reporter test"

}

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