[dpdk-dev,PATCHv3,5/5] testpmd: add new command to display RX/TX queue information

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index 8ab4687..29180de 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -5304,6 +5304,53 @@  cmdline_parse_inst_t cmd_showport = {
 	},
 };
 
+/* *** SHOW QUEUE INFO *** */
+struct cmd_showqueue_result {
+	cmdline_fixed_string_t show;
+	cmdline_fixed_string_t type;
+	cmdline_fixed_string_t what;
+	uint8_t portnum;
+	uint16_t queuenum;
+};
+
+static void
+cmd_showqueue_parsed(void *parsed_result,
+	__attribute__((unused)) struct cmdline *cl,
+	__attribute__((unused)) void *data)
+{
+	struct cmd_showqueue_result *res = parsed_result;
+
+	if (!strcmp(res->type, "rxq"))
+		rx_queue_infos_display(res->portnum, res->queuenum);
+	else if (!strcmp(res->type, "txq"))
+		tx_queue_infos_display(res->portnum, res->queuenum);
+}
+
+cmdline_parse_token_string_t cmd_showqueue_show =
+	TOKEN_STRING_INITIALIZER(struct cmd_showqueue_result, show, "show");
+cmdline_parse_token_string_t cmd_showqueue_type =
+	TOKEN_STRING_INITIALIZER(struct cmd_showqueue_result, type, "rxq#txq");
+cmdline_parse_token_string_t cmd_showqueue_what =
+	TOKEN_STRING_INITIALIZER(struct cmd_showqueue_result, what, "info");
+cmdline_parse_token_num_t cmd_showqueue_portnum =
+	TOKEN_NUM_INITIALIZER(struct cmd_showqueue_result, portnum, UINT8);
+cmdline_parse_token_num_t cmd_showqueue_queuenum =
+	TOKEN_NUM_INITIALIZER(struct cmd_showqueue_result, queuenum, UINT16);
+
+cmdline_parse_inst_t cmd_showqueue = {
+	.f = cmd_showqueue_parsed,
+	.data = NULL,
+	.help_str = "show rxq|txq info <port number> <queue_number>",
+	.tokens = {
+		(void *)&cmd_showqueue_show,
+		(void *)&cmd_showqueue_type,
+		(void *)&cmd_showqueue_what,
+		(void *)&cmd_showqueue_portnum,
+		(void *)&cmd_showqueue_queuenum,
+		NULL,
+	},
+};
+
 /* *** READ PORT REGISTER *** */
 struct cmd_read_reg_result {
 	cmdline_fixed_string_t read;
@@ -8913,6 +8960,7 @@  cmdline_parse_ctx_t main_ctx[] = {
 	(cmdline_parse_inst_t *)&cmd_help_long,
 	(cmdline_parse_inst_t *)&cmd_quit,
 	(cmdline_parse_inst_t *)&cmd_showport,
+	(cmdline_parse_inst_t *)&cmd_showqueue,
 	(cmdline_parse_inst_t *)&cmd_showportall,
 	(cmdline_parse_inst_t *)&cmd_showcfg,
 	(cmdline_parse_inst_t *)&cmd_start,
diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
index 1d29146..f1fd6b1 100644
--- a/app/test-pmd/config.c
+++ b/app/test-pmd/config.c
@@ -293,6 +293,73 @@  nic_stats_mapping_display(portid_t port_id)
 }
 
 void
+rx_queue_infos_display(portid_t port_id, uint16_t queue_id)
+{
+	struct rte_eth_rxq_info qinfo;
+	int32_t rc;
+	static const char *info_border = "*********************";
+
+	rc = rte_eth_rx_queue_info_get(port_id, queue_id, &qinfo);
+	if (rc != 0) {
+		printf("Failed to retrieve inforamtion for port: %hhu, "
+			"RX queue: %hu\nerror desc: %s(%d)\n",
+			port_id, queue_id, strerror(-rc), rc);
+		return;
+	}
+
+	printf("\n%s Infos for port %-2u, RX queue %-2u %s",
+	       info_border, port_id, queue_id, info_border);
+
+	printf("\nMempool: %s", (qinfo.mp == NULL) ? "NULL" : qinfo.mp->name);
+	printf("\nRX prefetch threshold: %hhu", qinfo.conf.rx_thresh.pthresh);
+	printf("\nRX host threshold: %hhu", qinfo.conf.rx_thresh.hthresh);
+	printf("\nRX writeback threshold: %hhu", qinfo.conf.rx_thresh.wthresh);
+	printf("\nRX free threshold: %hu", qinfo.conf.rx_free_thresh);
+	printf("\nRX drop packets: %s",
+		(qinfo.conf.rx_drop_en != 0) ? "on" : "off");
+	printf("\nRX deferred start: %s",
+		(qinfo.conf.rx_deferred_start != 0) ? "on" : "off");
+	printf("\nRX scattered packets: %s",
+		(qinfo.scattered_rx != 0) ? "on" : "off");
+	printf("\nNumber of RXDs: %hu", qinfo.nb_desc);
+	printf("\nMax possible number of RXDs: %hu", qinfo.max_desc);
+	printf("\nMin possible number of RXDs: %hu", qinfo.min_desc);
+	printf("\n");
+}
+
+void
+tx_queue_infos_display(portid_t port_id, uint16_t queue_id)
+{
+	struct rte_eth_txq_info qinfo;
+	int32_t rc;
+	static const char *info_border = "*********************";
+
+	rc = rte_eth_tx_queue_info_get(port_id, queue_id, &qinfo);
+	if (rc != 0) {
+		printf("Failed to retrieve inforamtion for port: %hhu, "
+			"TX queue: %hu\nerror desc: %s(%d)\n",
+			port_id, queue_id, strerror(-rc), rc);
+		return;
+	}
+
+	printf("\n%s Infos for port %-2u, TX queue %-2u %s",
+	       info_border, port_id, queue_id, info_border);
+
+	printf("\nTX prefetch threshold: %hhu", qinfo.conf.tx_thresh.pthresh);
+	printf("\nTX host threshold: %hhu", qinfo.conf.tx_thresh.hthresh);
+	printf("\nTX writeback threshold: %hhu", qinfo.conf.tx_thresh.wthresh);
+	printf("\nTX RS threshold: %hu", qinfo.conf.tx_rs_thresh);
+	printf("\nTX free threshold: %hu", qinfo.conf.tx_free_thresh);
+	printf("\nTX flags: %#x", qinfo.conf.txq_flags);
+	printf("\nTX deferred start: %s",
+		(qinfo.conf.tx_deferred_start != 0) ? "on" : "off");
+	printf("\nNumber of TXDs: %hu", qinfo.nb_desc);
+	printf("\nMax possible number of TXDs: %hu", qinfo.max_desc);
+	printf("\nMin possible number of TXDs: %hu", qinfo.min_desc);
+	printf("\n");
+}
+
+void
 port_infos_display(portid_t port_id)
 {
 	struct rte_port *port;
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index e91e077..a41f51a 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -479,6 +479,8 @@  void nic_xstats_display(portid_t port_id);
 void nic_xstats_clear(portid_t port_id);
 void nic_stats_mapping_display(portid_t port_id);
 void port_infos_display(portid_t port_id);
+void rx_queue_infos_display(portid_t port_idi, uint16_t queue_id);
+void tx_queue_infos_display(portid_t port_idi, uint16_t queue_id);
 void fwd_lcores_config_display(void);
 void fwd_config_display(void);
 void rxtx_config_display(void);