This patch supports querying DCB info.
The command is like:
--> /ethdev/dcb,0
{
"/ethdev/dcb": {
"tc_num": 1,
"tc0": {
"priority": 0,
"bw_percent": "100%",
"rxq_base": 0,
"txq_base": 0,
"nb_rxq": 4,
"nb_txq": 4
}
}
}
Signed-off-by: Jie Hai <haijie1@huawei.com>
---
lib/ethdev/rte_ethdev.c | 85 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
@@ -7349,6 +7349,89 @@ eth_dev_handle_port_txq(const char *cmd __rte_unused,
return 0;
}
+static int
+eth_dev_add_dcb_tc(struct rte_eth_dcb_info *dcb_info, struct rte_tel_data *d)
+{
+ struct rte_tel_data *tcds[RTE_ETH_DCB_NUM_TCS] = {NULL};
+ struct rte_eth_dcb_tc_queue_mapping *tcq;
+ char bw_percent[RTE_TEL_MAX_STRING_LEN];
+ char name[RTE_TEL_MAX_STRING_LEN];
+ struct rte_tel_data *tcd;
+ uint32_t i;
+
+ for (i = 0; i < dcb_info->nb_tcs; i++) {
+ tcd = rte_tel_data_alloc();
+ if (tcd == NULL) {
+ while (i-- > 0)
+ rte_tel_data_free(tcds[i]);
+ return -ENOMEM;
+ }
+
+ tcds[i] = tcd;
+ rte_tel_data_start_dict(tcd);
+
+ rte_tel_data_add_dict_uint(tcd, "priority", dcb_info->prio_tc[i]);
+ snprintf(bw_percent, RTE_TEL_MAX_STRING_LEN,
+ "%u%%", dcb_info->tc_bws[i]);
+ rte_tel_data_add_dict_string(tcd, "bw_percent", bw_percent);
+
+ tcq = &dcb_info->tc_queue;
+ rte_tel_data_add_dict_uint(tcd, "rxq_base", tcq->tc_rxq[0][i].base);
+ rte_tel_data_add_dict_uint(tcd, "txq_base", tcq->tc_txq[0][i].base);
+ rte_tel_data_add_dict_uint(tcd, "nb_rxq", tcq->tc_rxq[0][i].nb_queue);
+ rte_tel_data_add_dict_uint(tcd, "nb_txq", tcq->tc_txq[0][i].nb_queue);
+
+ snprintf(name, RTE_TEL_MAX_STRING_LEN, "tc%u", i);
+ rte_tel_data_add_dict_container(d, name, tcd, 0);
+ }
+
+ return 0;
+}
+
+static int
+eth_dev_add_dcb_info(uint16_t port_id, struct rte_tel_data *d)
+{
+ struct rte_eth_dcb_info dcb_info;
+ int ret;
+
+ ret = rte_eth_dev_get_dcb_info(port_id, &dcb_info);
+ if (ret != 0) {
+ RTE_ETHDEV_LOG(ERR,
+ "Failed to get dcb info, ret = %d\n", ret);
+ return ret;
+ }
+
+ rte_tel_data_start_dict(d);
+ rte_tel_data_add_dict_uint(d, "tc_num", dcb_info.nb_tcs);
+
+ if (dcb_info.nb_tcs > 0)
+ return eth_dev_add_dcb_tc(&dcb_info, d);
+
+ return 0;
+}
+
+static int
+eth_dev_handle_port_dcb(const char *cmd __rte_unused,
+ const char *params,
+ struct rte_tel_data *d)
+{
+ unsigned long port_id;
+ char *end_param;
+
+ if (params == NULL || strlen(params) == 0 || !isdigit(*params))
+ return -EINVAL;
+
+ port_id = strtoul(params, &end_param, 0);
+ if (*end_param != '\0')
+ RTE_ETHDEV_LOG(NOTICE,
+ "Extra parameters passed to ethdev telemetry command, ignoring\n");
+
+ if (port_id >= UINT16_MAX || !rte_eth_dev_is_valid_port(port_id))
+ return -EINVAL;
+
+ return eth_dev_add_dcb_info(port_id, d);
+}
+
RTE_LOG_REGISTER_DEFAULT(rte_eth_dev_logtype, INFO);
RTE_INIT(ethdev_init_telemetry)
@@ -7378,4 +7461,6 @@ RTE_INIT(ethdev_init_telemetry)
"Returns Rx queue info for a port. Parameters: unsigned port_id, unsigned queue_id (Optional if only one queue)");
rte_telemetry_register_cmd("/ethdev/tx_queue", eth_dev_handle_port_txq,
"Returns Tx queue info for a port. Parameters: unsigned port_id, unsigned queue_id (Optional if only one queue)");
+ rte_telemetry_register_cmd("/ethdev/dcb", eth_dev_handle_port_dcb,
+ "Returns DCB info for a port. Parameters: unsigned port_id");
}