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mlxsw: spectrum_dpipe: Add support for adjacency table dump
Add support for adjacency table dump. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 238 additions and 0 deletions
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@ -895,6 +895,243 @@ static u64 mlxsw_sp_dpipe_table_adj_size(struct mlxsw_sp *mlxsw_sp)
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return size;
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}
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enum mlxsw_sp_dpipe_table_adj_match {
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MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_INDEX,
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MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_HASH_INDEX,
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MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_COUNT,
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};
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enum mlxsw_sp_dpipe_table_adj_action {
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MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_DST_MAC,
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MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_ERIF_PORT,
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MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_COUNT,
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};
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static void
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mlxsw_sp_dpipe_table_adj_match_action_prepare(struct devlink_dpipe_match *matches,
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struct devlink_dpipe_action *actions)
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{
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struct devlink_dpipe_action *action;
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struct devlink_dpipe_match *match;
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match = &matches[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_INDEX];
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match->type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
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match->header = &mlxsw_sp_dpipe_header_metadata;
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match->field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ADJ_INDEX;
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match = &matches[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_HASH_INDEX];
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match->type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
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match->header = &mlxsw_sp_dpipe_header_metadata;
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match->field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ADJ_HASH_INDEX;
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action = &actions[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_DST_MAC];
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action->type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
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action->header = &devlink_dpipe_header_ethernet;
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action->field_id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC;
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action = &actions[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_ERIF_PORT];
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action->type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
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action->header = &mlxsw_sp_dpipe_header_metadata;
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action->field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT;
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}
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static int
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mlxsw_sp_dpipe_table_adj_entry_prepare(struct devlink_dpipe_entry *entry,
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struct devlink_dpipe_value *match_values,
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struct devlink_dpipe_match *matches,
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struct devlink_dpipe_value *action_values,
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struct devlink_dpipe_action *actions)
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{ struct devlink_dpipe_value *action_value;
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struct devlink_dpipe_value *match_value;
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struct devlink_dpipe_action *action;
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struct devlink_dpipe_match *match;
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entry->match_values = match_values;
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entry->match_values_count = MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_COUNT;
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entry->action_values = action_values;
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entry->action_values_count = MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_COUNT;
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match = &matches[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_INDEX];
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match_value = &match_values[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_INDEX];
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match_value->match = match;
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match_value->value_size = sizeof(u32);
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match_value->value = kmalloc(match_value->value_size, GFP_KERNEL);
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if (!match_value->value)
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return -ENOMEM;
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match = &matches[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_HASH_INDEX];
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match_value = &match_values[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_HASH_INDEX];
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match_value->match = match;
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match_value->value_size = sizeof(u32);
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match_value->value = kmalloc(match_value->value_size, GFP_KERNEL);
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if (!match_value->value)
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return -ENOMEM;
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action = &actions[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_DST_MAC];
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action_value = &action_values[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_DST_MAC];
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action_value->action = action;
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action_value->value_size = sizeof(u64);
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action_value->value = kmalloc(action_value->value_size, GFP_KERNEL);
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if (!action_value->value)
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return -ENOMEM;
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action = &actions[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_ERIF_PORT];
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action_value = &action_values[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_ERIF_PORT];
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action_value->action = action;
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action_value->value_size = sizeof(u32);
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action_value->value = kmalloc(action_value->value_size, GFP_KERNEL);
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if (!action_value->value)
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return -ENOMEM;
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return 0;
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}
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static void
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__mlxsw_sp_dpipe_table_adj_entry_fill(struct devlink_dpipe_entry *entry,
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u32 adj_index, u32 adj_hash_index,
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unsigned char *ha,
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struct mlxsw_sp_rif *rif)
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{
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struct devlink_dpipe_value *value;
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u32 *p_rif_value;
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u32 *p_index;
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value = &entry->match_values[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_INDEX];
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p_index = value->value;
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*p_index = adj_index;
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value = &entry->match_values[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_HASH_INDEX];
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p_index = value->value;
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*p_index = adj_hash_index;
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value = &entry->action_values[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_DST_MAC];
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ether_addr_copy(value->value, ha);
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value = &entry->action_values[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_ERIF_PORT];
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p_rif_value = value->value;
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*p_rif_value = mlxsw_sp_rif_index(rif);
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value->mapping_value = mlxsw_sp_rif_dev_ifindex(rif);
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value->mapping_valid = true;
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}
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static void mlxsw_sp_dpipe_table_adj_entry_fill(struct mlxsw_sp *mlxsw_sp,
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struct mlxsw_sp_nexthop *nh,
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struct devlink_dpipe_entry *entry)
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{
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struct mlxsw_sp_rif *rif = mlxsw_sp_nexthop_rif(nh);
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unsigned char *ha = mlxsw_sp_nexthop_ha(nh);
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u32 adj_hash_index = 0;
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u32 adj_index = 0;
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int err;
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mlxsw_sp_nexthop_indexes(nh, &adj_index, &adj_hash_index);
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__mlxsw_sp_dpipe_table_adj_entry_fill(entry, adj_index,
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adj_hash_index, ha, rif);
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err = mlxsw_sp_nexthop_counter_get(mlxsw_sp, nh, &entry->counter);
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if (!err)
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entry->counter_valid = true;
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}
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static int
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mlxsw_sp_dpipe_table_adj_entries_get(struct mlxsw_sp *mlxsw_sp,
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struct devlink_dpipe_entry *entry,
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bool counters_enabled,
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struct devlink_dpipe_dump_ctx *dump_ctx)
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{
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struct mlxsw_sp_nexthop *nh;
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int entry_index = 0;
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int nh_count_max;
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int nh_count = 0;
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int nh_skip;
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int j;
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int err;
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rtnl_lock();
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nh_count_max = mlxsw_sp_dpipe_table_adj_size(mlxsw_sp);
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start_again:
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err = devlink_dpipe_entry_ctx_prepare(dump_ctx);
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if (err)
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goto err_ctx_prepare;
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j = 0;
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nh_skip = nh_count;
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mlxsw_sp_nexthop_for_each(nh, mlxsw_sp->router) {
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if (!mlxsw_sp_nexthop_offload(nh) ||
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mlxsw_sp_nexthop_group_has_ipip(nh))
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continue;
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if (nh_count < nh_skip)
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goto skip;
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mlxsw_sp_dpipe_table_adj_entry_fill(mlxsw_sp, nh, entry);
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entry->index = entry_index;
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err = devlink_dpipe_entry_ctx_append(dump_ctx, entry);
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if (err) {
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if (err == -EMSGSIZE) {
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if (!j)
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goto err_entry_append;
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break;
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}
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goto err_entry_append;
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}
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entry_index++;
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j++;
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skip:
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nh_count++;
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}
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devlink_dpipe_entry_ctx_close(dump_ctx);
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if (nh_count != nh_count_max)
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goto start_again;
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rtnl_unlock();
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return 0;
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err_ctx_prepare:
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err_entry_append:
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rtnl_unlock();
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return err;
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}
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static int
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mlxsw_sp_dpipe_table_adj_entries_dump(void *priv, bool counters_enabled,
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struct devlink_dpipe_dump_ctx *dump_ctx)
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{
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struct devlink_dpipe_value action_values[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_COUNT];
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struct devlink_dpipe_value match_values[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_COUNT];
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struct devlink_dpipe_action actions[MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_COUNT];
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struct devlink_dpipe_match matches[MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_COUNT];
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struct devlink_dpipe_entry entry = {0};
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struct mlxsw_sp *mlxsw_sp = priv;
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int err;
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memset(matches, 0, MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_COUNT *
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sizeof(matches[0]));
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memset(match_values, 0, MLXSW_SP_DPIPE_TABLE_ADJ_MATCH_COUNT *
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sizeof(match_values[0]));
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memset(actions, 0, MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_COUNT *
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sizeof(actions[0]));
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memset(action_values, 0, MLXSW_SP_DPIPE_TABLE_ADJ_ACTION_COUNT *
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sizeof(action_values[0]));
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mlxsw_sp_dpipe_table_adj_match_action_prepare(matches, actions);
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err = mlxsw_sp_dpipe_table_adj_entry_prepare(&entry,
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match_values, matches,
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action_values, actions);
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if (err)
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goto out;
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err = mlxsw_sp_dpipe_table_adj_entries_get(mlxsw_sp, &entry,
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counters_enabled, dump_ctx);
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out:
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devlink_dpipe_entry_clear(&entry);
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return err;
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}
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static u64
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mlxsw_sp_dpipe_table_adj_size_get(void *priv)
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{
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@ -911,6 +1148,7 @@ mlxsw_sp_dpipe_table_adj_size_get(void *priv)
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static struct devlink_dpipe_table_ops mlxsw_sp_dpipe_table_adj_ops = {
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.matches_dump = mlxsw_sp_dpipe_table_adj_matches_dump,
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.actions_dump = mlxsw_sp_dpipe_table_adj_actions_dump,
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.entries_dump = mlxsw_sp_dpipe_table_adj_entries_dump,
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.size_get = mlxsw_sp_dpipe_table_adj_size_get,
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};
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