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net/mlx5: DR, Change SWS usage to debug fs seq_file interface

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In current SWS debug dump mechanism we implement the seq_file interface,
but we only implement the 'show' callback to dump the whole steering DB
with a single call to this callback.

However, for large data size the seq_printf function will fail to
allocate a buffer with the adequate capacity to hold such data.

This patch solves this problem by utilizing the seq_file interface
mechanism in the following way:
 - when the user triggers a dump procedure, we will allocate a list of
   buffers that hold the whole data dump (in the start callback)
 - using the start, next, show and stop callbacks of the seq_file
   API we iterate through the list and dump the whole data

Signed-off-by: Hamdan Igbaria <hamdani@nvidia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Hamdan Igbaria 2023-11-16 13:51:01 +02:00 committed by Saeed Mahameed
parent 507472ed0e
commit 917d1e799d
2 changed files with 620 additions and 134 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

734
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_dbg.c
View File

@ -54,6 +54,107 @@ enum dr_dump_rec_type {
DR_DUMP_REC_TYPE_ACTION_MATCH_RANGE = 3425,
};
static struct mlx5dr_dbg_dump_buff *
mlx5dr_dbg_dump_data_init_new_buff(struct mlx5dr_dbg_dump_data *dump_data)
{
struct mlx5dr_dbg_dump_buff *new_buff;
new_buff = kzalloc(sizeof(*new_buff), GFP_KERNEL);
if (!new_buff)
return NULL;
new_buff->buff = kvzalloc(MLX5DR_DEBUG_DUMP_BUFF_SIZE, GFP_KERNEL);
if (!new_buff->buff) {
kfree(new_buff);
return NULL;
}
INIT_LIST_HEAD(&new_buff->node);
list_add_tail(&new_buff->node, &dump_data->buff_list);
return new_buff;
}
static struct mlx5dr_dbg_dump_data *
mlx5dr_dbg_create_dump_data(void)
{
struct mlx5dr_dbg_dump_data *dump_data;
dump_data = kzalloc(sizeof(*dump_data), GFP_KERNEL);
if (!dump_data)
return NULL;
INIT_LIST_HEAD(&dump_data->buff_list);
if (!mlx5dr_dbg_dump_data_init_new_buff(dump_data)) {
kfree(dump_data);
return NULL;
}
return dump_data;
}
static void
mlx5dr_dbg_destroy_dump_data(struct mlx5dr_dbg_dump_data *dump_data)
{
struct mlx5dr_dbg_dump_buff *dump_buff, *tmp_buff;
if (!dump_data)
return;
list_for_each_entry_safe(dump_buff, tmp_buff, &dump_data->buff_list, node) {
kvfree(dump_buff->buff);
list_del(&dump_buff->node);
kfree(dump_buff);
}
kfree(dump_data);
}
static int
mlx5dr_dbg_dump_data_print(struct seq_file *file, char *str, u32 size)
{
struct mlx5dr_domain *dmn = file->private;
struct mlx5dr_dbg_dump_data *dump_data;
struct mlx5dr_dbg_dump_buff *buff;
u32 buff_capacity, write_size;
int remain_size, ret;
if (size >= MLX5DR_DEBUG_DUMP_BUFF_SIZE)
return -EINVAL;
dump_data = dmn->dump_info.dump_data;
buff = list_last_entry(&dump_data->buff_list,
struct mlx5dr_dbg_dump_buff, node);
buff_capacity = (MLX5DR_DEBUG_DUMP_BUFF_SIZE - 1) - buff->index;
remain_size = buff_capacity - size;
write_size = (remain_size > 0) ? size : buff_capacity;
if (likely(write_size)) {
ret = snprintf(buff->buff + buff->index, write_size + 1, "%s", str);
if (ret < 0)
return ret;
buff->index += write_size;
}
if (remain_size < 0) {
remain_size *= -1;
buff = mlx5dr_dbg_dump_data_init_new_buff(dump_data);
if (!buff)
return -ENOMEM;
ret = snprintf(buff->buff, remain_size + 1, "%s", str + write_size);
if (ret < 0)
return ret;
buff->index += remain_size;
}
return 0;
}
void mlx5dr_dbg_tbl_add(struct mlx5dr_table *tbl)
{
mutex_lock(&tbl->dmn->dump_info.dbg_mutex);
@ -109,36 +210,68 @@ dr_dump_rule_action_mem(struct seq_file *file, const u64 rule_id,
{
struct mlx5dr_action *action = action_mem->action;
const u64 action_id = DR_DBG_PTR_TO_ID(action);
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
u64 hit_tbl_ptr, miss_tbl_ptr;
u32 hit_tbl_id, miss_tbl_id;
int ret;
switch (action->action_type) {
case DR_ACTION_TYP_DROP:
seq_printf(file, "%d,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_DROP, action_id, rule_id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_DROP, action_id,
rule_id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_FT:
if (action->dest_tbl->is_fw_tbl)
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_FT, action_id,
rule_id, action->dest_tbl->fw_tbl.id,
-1);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_FT, action_id,
rule_id, action->dest_tbl->fw_tbl.id,
-1);
else
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_FT, action_id,
rule_id, action->dest_tbl->tbl->table_id,
DR_DBG_PTR_TO_ID(action->dest_tbl->tbl));
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_FT, action_id,
rule_id, action->dest_tbl->tbl->table_id,
DR_DBG_PTR_TO_ID(action->dest_tbl->tbl));
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_CTR:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_CTR, action_id, rule_id,
action->ctr->ctr_id + action->ctr->offset);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_CTR, action_id, rule_id,
action->ctr->ctr_id + action->ctr->offset);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_TAG:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_TAG, action_id, rule_id,
action->flow_tag->flow_tag);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_TAG, action_id, rule_id,
action->flow_tag->flow_tag);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_MODIFY_HDR:
{
@ -150,83 +283,171 @@ dr_dump_rule_action_mem(struct seq_file *file, const u64 rule_id,
ptrn_arg = !action->rewrite->single_action_opt && ptrn && arg;
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,%d,0x%x,0x%x,0x%x",
DR_DUMP_REC_TYPE_ACTION_MODIFY_HDR, action_id,
rule_id, action->rewrite->index,
action->rewrite->single_action_opt,
ptrn_arg ? action->rewrite->num_of_actions : 0,
ptrn_arg ? ptrn->index : 0,
ptrn_arg ? mlx5dr_arg_get_obj_id(arg) : 0);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,%d,0x%x,0x%x,0x%x",
DR_DUMP_REC_TYPE_ACTION_MODIFY_HDR, action_id,
rule_id, action->rewrite->index,
action->rewrite->single_action_opt,
ptrn_arg ? action->rewrite->num_of_actions : 0,
ptrn_arg ? ptrn->index : 0,
ptrn_arg ? mlx5dr_arg_get_obj_id(arg) : 0);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (ptrn_arg) {
for (i = 0; i < action->rewrite->num_of_actions; i++) {
seq_printf(file, ",0x%016llx",
be64_to_cpu(((__be64 *)rewrite_data)[i]));
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
",0x%016llx",
be64_to_cpu(((__be64 *)rewrite_data)[i]));
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
}
}
seq_puts(file, "\n");
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, "\n");
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
}
case DR_ACTION_TYP_VPORT:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_VPORT, action_id, rule_id,
action->vport->caps->num);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_VPORT, action_id, rule_id,
action->vport->caps->num);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_TNL_L2_TO_L2:
seq_printf(file, "%d,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_DECAP_L2, action_id,
rule_id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_DECAP_L2, action_id,
rule_id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_TNL_L3_TO_L2:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_DECAP_L3, action_id,
rule_id,
(action->rewrite->ptrn && action->rewrite->arg) ?
mlx5dr_arg_get_obj_id(action->rewrite->arg) :
action->rewrite->index);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_DECAP_L3, action_id,
rule_id,
(action->rewrite->ptrn && action->rewrite->arg) ?
mlx5dr_arg_get_obj_id(action->rewrite->arg) :
action->rewrite->index);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_L2_TO_TNL_L2:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_ENCAP_L2, action_id,
rule_id, action->reformat->id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_ENCAP_L2, action_id,
rule_id, action->reformat->id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_L2_TO_TNL_L3:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_ENCAP_L3, action_id,
rule_id, action->reformat->id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_ENCAP_L3, action_id,
rule_id, action->reformat->id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_POP_VLAN:
seq_printf(file, "%d,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_POP_VLAN, action_id,
rule_id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_POP_VLAN, action_id,
rule_id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_PUSH_VLAN:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_PUSH_VLAN, action_id,
rule_id, action->push_vlan->vlan_hdr);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_PUSH_VLAN, action_id,
rule_id, action->push_vlan->vlan_hdr);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_INSERT_HDR:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_INSERT_HDR, action_id,
rule_id, action->reformat->id,
action->reformat->param_0,
action->reformat->param_1);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_INSERT_HDR, action_id,
rule_id, action->reformat->id,
action->reformat->param_0,
action->reformat->param_1);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_REMOVE_HDR:
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_REMOVE_HDR, action_id,
rule_id, action->reformat->id,
action->reformat->param_0,
action->reformat->param_1);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_REMOVE_HDR, action_id,
rule_id, action->reformat->id,
action->reformat->param_0,
action->reformat->param_1);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_SAMPLER:
seq_printf(file,
"%d,0x%llx,0x%llx,0x%x,0x%x,0x%x,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_SAMPLER, action_id, rule_id,
0, 0, action->sampler->sampler_id,
action->sampler->rx_icm_addr,
action->sampler->tx_icm_addr);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%x,0x%x,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_ACTION_SAMPLER, action_id,
rule_id, 0, 0, action->sampler->sampler_id,
action->sampler->rx_icm_addr,
action->sampler->tx_icm_addr);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
case DR_ACTION_TYP_RANGE:
if (action->range->hit_tbl_action->dest_tbl->is_fw_tbl) {
@ -247,10 +468,17 @@ dr_dump_rule_action_mem(struct seq_file *file, const u64 rule_id,
DR_DBG_PTR_TO_ID(action->range->miss_tbl_action->dest_tbl->tbl);
}
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,0x%llx,0x%x,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_MATCH_RANGE, action_id, rule_id,
hit_tbl_id, hit_tbl_ptr, miss_tbl_id, miss_tbl_ptr,
action->range->definer_id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%llx,0x%x,0x%llx,0x%x\n",
DR_DUMP_REC_TYPE_ACTION_MATCH_RANGE, action_id,
rule_id, hit_tbl_id, hit_tbl_ptr, miss_tbl_id,
miss_tbl_ptr, action->range->definer_id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
break;
default:
return 0;
@ -263,8 +491,10 @@ static int
dr_dump_rule_mem(struct seq_file *file, struct mlx5dr_ste *ste,
bool is_rx, const u64 rule_id, u8 format_ver)
{
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
char hw_ste_dump[DR_HEX_SIZE];
u32 mem_rec_type;
int ret;
if (format_ver == MLX5_STEERING_FORMAT_CONNECTX_5) {
mem_rec_type = is_rx ? DR_DUMP_REC_TYPE_RULE_RX_ENTRY_V0 :
@ -277,9 +507,16 @@ dr_dump_rule_mem(struct seq_file *file, struct mlx5dr_ste *ste,
dr_dump_hex_print(hw_ste_dump, (char *)mlx5dr_ste_get_hw_ste(ste),
DR_STE_SIZE_REDUCED);
seq_printf(file, "%d,0x%llx,0x%llx,%s\n", mem_rec_type,
dr_dump_icm_to_idx(mlx5dr_ste_get_icm_addr(ste)), rule_id,
hw_ste_dump);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,%s\n", mem_rec_type,
dr_dump_icm_to_idx(mlx5dr_ste_get_icm_addr(ste)),
rule_id, hw_ste_dump);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
return 0;
}
@ -309,6 +546,7 @@ static int dr_dump_rule(struct seq_file *file, struct mlx5dr_rule *rule)
{
struct mlx5dr_rule_action_member *action_mem;
const u64 rule_id = DR_DBG_PTR_TO_ID(rule);
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
struct mlx5dr_rule_rx_tx *rx = &rule->rx;
struct mlx5dr_rule_rx_tx *tx = &rule->tx;
u8 format_ver;
@ -316,8 +554,15 @@ static int dr_dump_rule(struct seq_file *file, struct mlx5dr_rule *rule)
format_ver = rule->matcher->tbl->dmn->info.caps.sw_format_ver;
seq_printf(file, "%d,0x%llx,0x%llx\n", DR_DUMP_REC_TYPE_RULE, rule_id,
DR_DBG_PTR_TO_ID(rule->matcher));
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx\n", DR_DUMP_REC_TYPE_RULE,
rule_id, DR_DBG_PTR_TO_ID(rule->matcher));
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (rx->nic_matcher) {
ret = dr_dump_rule_rx_tx(file, rx, true, rule_id, format_ver);
@ -344,46 +589,94 @@ static int
dr_dump_matcher_mask(struct seq_file *file, struct mlx5dr_match_param *mask,
u8 criteria, const u64 matcher_id)
{
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
char dump[DR_HEX_SIZE];
int ret;
seq_printf(file, "%d,0x%llx,", DR_DUMP_REC_TYPE_MATCHER_MASK,
matcher_id);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, "%d,0x%llx,",
DR_DUMP_REC_TYPE_MATCHER_MASK, matcher_id);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (criteria & DR_MATCHER_CRITERIA_OUTER) {
dr_dump_hex_print(dump, (char *)&mask->outer, sizeof(mask->outer));
seq_printf(file, "%s,", dump);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%s,", dump);
} else {
seq_puts(file, ",");
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, ",");
}
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (criteria & DR_MATCHER_CRITERIA_INNER) {
dr_dump_hex_print(dump, (char *)&mask->inner, sizeof(mask->inner));
seq_printf(file, "%s,", dump);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%s,", dump);
} else {
seq_puts(file, ",");
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, ",");
}
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (criteria & DR_MATCHER_CRITERIA_MISC) {
dr_dump_hex_print(dump, (char *)&mask->misc, sizeof(mask->misc));
seq_printf(file, "%s,", dump);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%s,", dump);
} else {
seq_puts(file, ",");
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, ",");
}
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (criteria & DR_MATCHER_CRITERIA_MISC2) {
dr_dump_hex_print(dump, (char *)&mask->misc2, sizeof(mask->misc2));
seq_printf(file, "%s,", dump);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%s,", dump);
} else {
seq_puts(file, ",");
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, ",");
}
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (criteria & DR_MATCHER_CRITERIA_MISC3) {
dr_dump_hex_print(dump, (char *)&mask->misc3, sizeof(mask->misc3));
seq_printf(file, "%s\n", dump);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%s\n", dump);
} else {
seq_puts(file, ",\n");
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH, ",\n");
}
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
return 0;
}
@ -391,9 +684,19 @@ static int
dr_dump_matcher_builder(struct seq_file *file, struct mlx5dr_ste_build *builder,
u32 index, bool is_rx, const u64 matcher_id)
{
seq_printf(file, "%d,0x%llx,%d,%d,0x%x\n",
DR_DUMP_REC_TYPE_MATCHER_BUILDER, matcher_id, index, is_rx,
builder->lu_type);
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
int ret;
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,%d,%d,0x%x\n",
DR_DUMP_REC_TYPE_MATCHER_BUILDER, matcher_id, index,
is_rx, builder->lu_type);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
return 0;
}
@ -403,6 +706,7 @@ dr_dump_matcher_rx_tx(struct seq_file *file, bool is_rx,
struct mlx5dr_matcher_rx_tx *matcher_rx_tx,
const u64 matcher_id)
{
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
enum dr_dump_rec_type rec_type;
u64 s_icm_addr, e_icm_addr;
int i, ret;
@ -412,11 +716,19 @@ dr_dump_matcher_rx_tx(struct seq_file *file, bool is_rx,
s_icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(matcher_rx_tx->s_htbl->chunk);
e_icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(matcher_rx_tx->e_anchor->chunk);
seq_printf(file, "%d,0x%llx,0x%llx,%d,0x%llx,0x%llx\n",
rec_type, DR_DBG_PTR_TO_ID(matcher_rx_tx),
matcher_id, matcher_rx_tx->num_of_builders,
dr_dump_icm_to_idx(s_icm_addr),
dr_dump_icm_to_idx(e_icm_addr));
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,%d,0x%llx,0x%llx\n",
rec_type, DR_DBG_PTR_TO_ID(matcher_rx_tx),
matcher_id, matcher_rx_tx->num_of_builders,
dr_dump_icm_to_idx(s_icm_addr),
dr_dump_icm_to_idx(e_icm_addr));
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
for (i = 0; i < matcher_rx_tx->num_of_builders; i++) {
ret = dr_dump_matcher_builder(file,
@ -434,13 +746,22 @@ dr_dump_matcher(struct seq_file *file, struct mlx5dr_matcher *matcher)
{
struct mlx5dr_matcher_rx_tx *rx = &matcher->rx;
struct mlx5dr_matcher_rx_tx *tx = &matcher->tx;
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
u64 matcher_id;
int ret;
matcher_id = DR_DBG_PTR_TO_ID(matcher);
seq_printf(file, "%d,0x%llx,0x%llx,%d\n", DR_DUMP_REC_TYPE_MATCHER,
matcher_id, DR_DBG_PTR_TO_ID(matcher->tbl), matcher->prio);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,%d\n", DR_DUMP_REC_TYPE_MATCHER,
matcher_id, DR_DBG_PTR_TO_ID(matcher->tbl),
matcher->prio);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
ret = dr_dump_matcher_mask(file, &matcher->mask,
matcher->match_criteria, matcher_id);
@ -486,15 +807,24 @@ dr_dump_table_rx_tx(struct seq_file *file, bool is_rx,
struct mlx5dr_table_rx_tx *table_rx_tx,
const u64 table_id)
{
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
enum dr_dump_rec_type rec_type;
u64 s_icm_addr;
int ret;
rec_type = is_rx ? DR_DUMP_REC_TYPE_TABLE_RX :
DR_DUMP_REC_TYPE_TABLE_TX;
s_icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(table_rx_tx->s_anchor->chunk);
seq_printf(file, "%d,0x%llx,0x%llx\n", rec_type, table_id,
dr_dump_icm_to_idx(s_icm_addr));
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx\n", rec_type, table_id,
dr_dump_icm_to_idx(s_icm_addr));
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
return 0;
}
@ -503,11 +833,19 @@ static int dr_dump_table(struct seq_file *file, struct mlx5dr_table *table)
{
struct mlx5dr_table_rx_tx *rx = &table->rx;
struct mlx5dr_table_rx_tx *tx = &table->tx;
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
int ret;
seq_printf(file, "%d,0x%llx,0x%llx,%d,%d\n", DR_DUMP_REC_TYPE_TABLE,
DR_DBG_PTR_TO_ID(table), DR_DBG_PTR_TO_ID(table->dmn),
table->table_type, table->level);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,%d,%d\n", DR_DUMP_REC_TYPE_TABLE,
DR_DBG_PTR_TO_ID(table), DR_DBG_PTR_TO_ID(table->dmn),
table->table_type, table->level);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
if (rx->nic_dmn) {
ret = dr_dump_table_rx_tx(file, true, rx,
@ -546,46 +884,86 @@ static int
dr_dump_send_ring(struct seq_file *file, struct mlx5dr_send_ring *ring,
const u64 domain_id)
{
seq_printf(file, "%d,0x%llx,0x%llx,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_DOMAIN_SEND_RING, DR_DBG_PTR_TO_ID(ring),
domain_id, ring->cq->mcq.cqn, ring->qp->qpn);
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
int ret;
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%llx,0x%x,0x%x\n",
DR_DUMP_REC_TYPE_DOMAIN_SEND_RING,
DR_DBG_PTR_TO_ID(ring), domain_id,
ring->cq->mcq.cqn, ring->qp->qpn);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
return 0;
}
static int
static noinline_for_stack int
dr_dump_domain_info_flex_parser(struct seq_file *file,
const char *flex_parser_name,
const u8 flex_parser_value,
const u64 domain_id)
{
seq_printf(file, "%d,0x%llx,%s,0x%x\n",
DR_DUMP_REC_TYPE_DOMAIN_INFO_FLEX_PARSER, domain_id,
flex_parser_name, flex_parser_value);
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
int ret;
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,%s,0x%x\n",
DR_DUMP_REC_TYPE_DOMAIN_INFO_FLEX_PARSER, domain_id,
flex_parser_name, flex_parser_value);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
return 0;
}
static int
static noinline_for_stack int
dr_dump_domain_info_caps(struct seq_file *file, struct mlx5dr_cmd_caps *caps,
const u64 domain_id)
{
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
struct mlx5dr_cmd_vport_cap *vport_caps;
unsigned long i, vports_num;
int ret;
xa_for_each(&caps->vports.vports_caps_xa, vports_num, vport_caps)
; /* count the number of vports in xarray */
seq_printf(file, "%d,0x%llx,0x%x,0x%llx,0x%llx,0x%x,%lu,%d\n",
DR_DUMP_REC_TYPE_DOMAIN_INFO_CAPS, domain_id, caps->gvmi,
caps->nic_rx_drop_address, caps->nic_tx_drop_address,
caps->flex_protocols, vports_num, caps->eswitch_manager);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,0x%x,0x%llx,0x%llx,0x%x,%lu,%d\n",
DR_DUMP_REC_TYPE_DOMAIN_INFO_CAPS, domain_id, caps->gvmi,
caps->nic_rx_drop_address, caps->nic_tx_drop_address,
caps->flex_protocols, vports_num, caps->eswitch_manager);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
xa_for_each(&caps->vports.vports_caps_xa, i, vport_caps) {
vport_caps = xa_load(&caps->vports.vports_caps_xa, i);
seq_printf(file, "%d,0x%llx,%lu,0x%x,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_DOMAIN_INFO_VPORT, domain_id, i,
vport_caps->vport_gvmi, vport_caps->icm_address_rx,
vport_caps->icm_address_tx);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,%lu,0x%x,0x%llx,0x%llx\n",
DR_DUMP_REC_TYPE_DOMAIN_INFO_VPORT,
domain_id, i, vport_caps->vport_gvmi,
vport_caps->icm_address_rx,
vport_caps->icm_address_tx);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
}
return 0;
}
@ -627,24 +1005,32 @@ dr_dump_domain_info(struct seq_file *file, struct mlx5dr_domain_info *info,
return 0;
}
static int
static noinline_for_stack int
dr_dump_domain(struct seq_file *file, struct mlx5dr_domain *dmn)
{
char buff[MLX5DR_DEBUG_DUMP_BUFF_LENGTH];
u64 domain_id = DR_DBG_PTR_TO_ID(dmn);
int ret;
seq_printf(file, "%d,0x%llx,%d,0%x,%d,%u.%u.%u,%s,%d,%u,%u,%u\n",
DR_DUMP_REC_TYPE_DOMAIN,
domain_id, dmn->type, dmn->info.caps.gvmi,
dmn->info.supp_sw_steering,
/* package version */
LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL,
LINUX_VERSION_SUBLEVEL,
pci_name(dmn->mdev->pdev),
0, /* domain flags */
dmn->num_buddies[DR_ICM_TYPE_STE],
dmn->num_buddies[DR_ICM_TYPE_MODIFY_ACTION],
dmn->num_buddies[DR_ICM_TYPE_MODIFY_HDR_PTRN]);
ret = snprintf(buff, MLX5DR_DEBUG_DUMP_BUFF_LENGTH,
"%d,0x%llx,%d,0%x,%d,%u.%u.%u,%s,%d,%u,%u,%u\n",
DR_DUMP_REC_TYPE_DOMAIN,
domain_id, dmn->type, dmn->info.caps.gvmi,
dmn->info.supp_sw_steering,
/* package version */
LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL,
LINUX_VERSION_SUBLEVEL,
pci_name(dmn->mdev->pdev),
0, /* domain flags */
dmn->num_buddies[DR_ICM_TYPE_STE],
dmn->num_buddies[DR_ICM_TYPE_MODIFY_ACTION],
dmn->num_buddies[DR_ICM_TYPE_MODIFY_HDR_PTRN]);
if (ret < 0)
return ret;
ret = mlx5dr_dbg_dump_data_print(file, buff, ret);
if (ret)
return ret;
ret = dr_dump_domain_info(file, &dmn->info, domain_id);
if (ret < 0)
@ -683,11 +1069,91 @@ unlock_mutex:
return ret;
}
static int dr_dump_show(struct seq_file *file, void *priv)
static void *
dr_dump_start(struct seq_file *file, loff_t *pos)
{
return dr_dump_domain_all(file, file->private);
struct mlx5dr_domain *dmn = file->private;
struct mlx5dr_dbg_dump_data *dump_data;
if (atomic_read(&dmn->dump_info.state) != MLX5DR_DEBUG_DUMP_STATE_FREE) {
mlx5_core_warn(dmn->mdev, "Dump already in progress\n");
return ERR_PTR(-EBUSY);
}
atomic_set(&dmn->dump_info.state, MLX5DR_DEBUG_DUMP_STATE_IN_PROGRESS);
dump_data = dmn->dump_info.dump_data;
if (dump_data) {
return seq_list_start(&dump_data->buff_list, *pos);
} else if (*pos == 0) {
dump_data = mlx5dr_dbg_create_dump_data();
if (!dump_data)
goto exit;
dmn->dump_info.dump_data = dump_data;
if (dr_dump_domain_all(file, dmn)) {
mlx5dr_dbg_destroy_dump_data(dump_data);
dmn->dump_info.dump_data = NULL;
goto exit;
}
return seq_list_start(&dump_data->buff_list, *pos);
}
exit:
atomic_set(&dmn->dump_info.state, MLX5DR_DEBUG_DUMP_STATE_FREE);
return NULL;
}
DEFINE_SHOW_ATTRIBUTE(dr_dump);
static void *
dr_dump_next(struct seq_file *file, void *v, loff_t *pos)
{
struct mlx5dr_domain *dmn = file->private;
struct mlx5dr_dbg_dump_data *dump_data;
dump_data = dmn->dump_info.dump_data;
return seq_list_next(v, &dump_data->buff_list, pos);
}
static void
dr_dump_stop(struct seq_file *file, void *v)
{
struct mlx5dr_domain *dmn = file->private;
struct mlx5dr_dbg_dump_data *dump_data;
if (v && IS_ERR(v))
return;
if (!v) {
dump_data = dmn->dump_info.dump_data;
if (dump_data) {
mlx5dr_dbg_destroy_dump_data(dump_data);
dmn->dump_info.dump_data = NULL;
}
}
atomic_set(&dmn->dump_info.state, MLX5DR_DEBUG_DUMP_STATE_FREE);
}
static int
dr_dump_show(struct seq_file *file, void *v)
{
struct mlx5dr_dbg_dump_buff *entry;
entry = list_entry(v, struct mlx5dr_dbg_dump_buff, node);
seq_printf(file, "%s", entry->buff);
return 0;
}
static const struct seq_operations dr_dump_sops = {
.start = dr_dump_start,
.next = dr_dump_next,
.stop = dr_dump_stop,
.show = dr_dump_show,
};
DEFINE_SEQ_ATTRIBUTE(dr_dump);
void mlx5dr_dbg_init_dump(struct mlx5dr_domain *dmn)
{

20
drivers/net/ethernet/mellanox/mlx5/core/steering/dr_dbg.h
View File

@ -1,10 +1,30 @@
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
#define MLX5DR_DEBUG_DUMP_BUFF_SIZE (64 * 1024 * 1024)
#define MLX5DR_DEBUG_DUMP_BUFF_LENGTH 512
enum {
MLX5DR_DEBUG_DUMP_STATE_FREE,
MLX5DR_DEBUG_DUMP_STATE_IN_PROGRESS,
};
struct mlx5dr_dbg_dump_buff {
char *buff;
u32 index;
struct list_head node;
};
struct mlx5dr_dbg_dump_data {
struct list_head buff_list;
};
struct mlx5dr_dbg_dump_info {
struct mutex dbg_mutex; /* protect dbg lists */
struct dentry *steering_debugfs;
struct dentry *fdb_debugfs;
struct mlx5dr_dbg_dump_data *dump_data;
atomic_t state;
};
void mlx5dr_dbg_init_dump(struct mlx5dr_domain *dmn);