tools: ynltool: add qstats support

$ ynltool qstat
eth0 rx-packets: 493192163 rx-bytes: 1442544543997
tx-packets: 745999838 tx-bytes: 4574215826482
tx-stop: 7033 tx-wake: 7033

$ ynltool qstat show group-by queue
eth0 rx-0 packets: 70196880 bytes: 178633973750
eth0 rx-1 packets: 63623419 bytes: 197274745250
...
eth0 tx-1 packets: 98645810 bytes: 631247647938
stop: 1048 wake: 1048
eth0 tx-2 packets: 86775824 bytes: 563930471952
stop: 1126 wake: 1126
...

$ ynltool -j qstat | jq
[
{
"ifname": "eth0",
"ifindex": 2,
"rx": {
"packets": 493396439,
"bytes": 1443608198921
},
"tx": {
"packets": 746239978,
"bytes": 4574333772645,
"stop": 7072,
"wake": 7072
}
}
]

Signed-off-by: Jakub Kicinski <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Acked-by: Stanislav Fomichev <[e-mail]>
Signed-off-by: Paolo Abeni <[e-mail]>

tools/net/ynl/ynltool/main.c

···
 		"Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
 		"       %s version\n"
 		"\n"
-		"       OBJECT := { page-pool }\n"
+		"       OBJECT := { page-pool | qstats }\n"
 		"       " HELP_SPEC_OPTIONS "\n"
 		"",
 		bin_name, bin_name);
···
 static const struct cmd commands[] = {
 	{ "help",	do_help },
 	{ "page-pool",	do_page_pool },
+	{ "qstats",	do_qstats },
 	{ "version",	do_version },
 	{ 0 }
 };

tools/net/ynl/ynltool/main.h

···
 
 /* subcommands */
 int do_page_pool(int argc, char **argv);
+int do_qstats(int argc, char **argv);
 
 #endif /* __YNLTOOL_H */

tools/net/ynl/ynltool/qstats.c

···
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <net/if.h>
+
+#include <ynl.h>
+#include "netdev-user.h"
+
+#include "main.h"
+
+static enum netdev_qstats_scope scope; /* default - device */
+
+static void print_json_qstats(struct netdev_qstats_get_list *qstats)
+{
+	jsonw_start_array(json_wtr);
+
+	ynl_dump_foreach(qstats, qs) {
+		char ifname[IF_NAMESIZE];
+		const char *name;
+
+		jsonw_start_object(json_wtr);
+
+		name = if_indextoname(qs->ifindex, ifname);
+		if (name)
+			jsonw_string_field(json_wtr, "ifname", name);
+		jsonw_uint_field(json_wtr, "ifindex", qs->ifindex);
+
+		if (qs->_present.queue_type)
+			jsonw_string_field(json_wtr, "queue-type",
+					   netdev_queue_type_str(qs->queue_type));
+		if (qs->_present.queue_id)
+			jsonw_uint_field(json_wtr, "queue-id", qs->queue_id);
+
+		if (qs->_present.rx_packets || qs->_present.rx_bytes ||
+		    qs->_present.rx_alloc_fail || qs->_present.rx_hw_drops ||
+		    qs->_present.rx_csum_complete || qs->_present.rx_hw_gro_packets) {
+			jsonw_name(json_wtr, "rx");
+			jsonw_start_object(json_wtr);
+			if (qs->_present.rx_packets)
+				jsonw_uint_field(json_wtr, "packets", qs->rx_packets);
+			if (qs->_present.rx_bytes)
+				jsonw_uint_field(json_wtr, "bytes", qs->rx_bytes);
+			if (qs->_present.rx_alloc_fail)
+				jsonw_uint_field(json_wtr, "alloc-fail", qs->rx_alloc_fail);
+			if (qs->_present.rx_hw_drops)
+				jsonw_uint_field(json_wtr, "hw-drops", qs->rx_hw_drops);
+			if (qs->_present.rx_hw_drop_overruns)
+				jsonw_uint_field(json_wtr, "hw-drop-overruns", qs->rx_hw_drop_overruns);
+			if (qs->_present.rx_hw_drop_ratelimits)
+				jsonw_uint_field(json_wtr, "hw-drop-ratelimits", qs->rx_hw_drop_ratelimits);
+			if (qs->_present.rx_csum_complete)
+				jsonw_uint_field(json_wtr, "csum-complete", qs->rx_csum_complete);
+			if (qs->_present.rx_csum_unnecessary)
+				jsonw_uint_field(json_wtr, "csum-unnecessary", qs->rx_csum_unnecessary);
+			if (qs->_present.rx_csum_none)
+				jsonw_uint_field(json_wtr, "csum-none", qs->rx_csum_none);
+			if (qs->_present.rx_csum_bad)
+				jsonw_uint_field(json_wtr, "csum-bad", qs->rx_csum_bad);
+			if (qs->_present.rx_hw_gro_packets)
+				jsonw_uint_field(json_wtr, "hw-gro-packets", qs->rx_hw_gro_packets);
+			if (qs->_present.rx_hw_gro_bytes)
+				jsonw_uint_field(json_wtr, "hw-gro-bytes", qs->rx_hw_gro_bytes);
+			if (qs->_present.rx_hw_gro_wire_packets)
+				jsonw_uint_field(json_wtr, "hw-gro-wire-packets", qs->rx_hw_gro_wire_packets);
+			if (qs->_present.rx_hw_gro_wire_bytes)
+				jsonw_uint_field(json_wtr, "hw-gro-wire-bytes", qs->rx_hw_gro_wire_bytes);
+			jsonw_end_object(json_wtr);
+		}
+
+		if (qs->_present.tx_packets || qs->_present.tx_bytes ||
+		    qs->_present.tx_hw_drops || qs->_present.tx_csum_none ||
+		    qs->_present.tx_hw_gso_packets) {
+			jsonw_name(json_wtr, "tx");
+			jsonw_start_object(json_wtr);
+			if (qs->_present.tx_packets)
+				jsonw_uint_field(json_wtr, "packets", qs->tx_packets);
+			if (qs->_present.tx_bytes)
+				jsonw_uint_field(json_wtr, "bytes", qs->tx_bytes);
+			if (qs->_present.tx_hw_drops)
+				jsonw_uint_field(json_wtr, "hw-drops", qs->tx_hw_drops);
+			if (qs->_present.tx_hw_drop_errors)
+				jsonw_uint_field(json_wtr, "hw-drop-errors", qs->tx_hw_drop_errors);
+			if (qs->_present.tx_hw_drop_ratelimits)
+				jsonw_uint_field(json_wtr, "hw-drop-ratelimits", qs->tx_hw_drop_ratelimits);
+			if (qs->_present.tx_csum_none)
+				jsonw_uint_field(json_wtr, "csum-none", qs->tx_csum_none);
+			if (qs->_present.tx_needs_csum)
+				jsonw_uint_field(json_wtr, "needs-csum", qs->tx_needs_csum);
+			if (qs->_present.tx_hw_gso_packets)
+				jsonw_uint_field(json_wtr, "hw-gso-packets", qs->tx_hw_gso_packets);
+			if (qs->_present.tx_hw_gso_bytes)
+				jsonw_uint_field(json_wtr, "hw-gso-bytes", qs->tx_hw_gso_bytes);
+			if (qs->_present.tx_hw_gso_wire_packets)
+				jsonw_uint_field(json_wtr, "hw-gso-wire-packets", qs->tx_hw_gso_wire_packets);
+			if (qs->_present.tx_hw_gso_wire_bytes)
+				jsonw_uint_field(json_wtr, "hw-gso-wire-bytes", qs->tx_hw_gso_wire_bytes);
+			if (qs->_present.tx_stop)
+				jsonw_uint_field(json_wtr, "stop", qs->tx_stop);
+			if (qs->_present.tx_wake)
+				jsonw_uint_field(json_wtr, "wake", qs->tx_wake);
+			jsonw_end_object(json_wtr);
+		}
+
+		jsonw_end_object(json_wtr);
+	}
+
+	jsonw_end_array(json_wtr);
+}
+
+static void print_one(bool present, const char *name, unsigned long long val,
+		      int *line)
+{
+	if (!present)
+		return;
+
+	if (!*line) {
+		printf("              ");
+		++(*line);
+	}
+
+	/* Don't waste space on tx- and rx- prefix, its implied by queue type */
+	if (scope == NETDEV_QSTATS_SCOPE_QUEUE &&
+	    (name[0] == 'r' || name[0] == 't') &&
+	    name[1] == 'x' && name[2] == '-')
+		name += 3;
+
+	printf(" %15s: %15llu", name, val);
+
+	if (++(*line) == 3) {
+		printf("\n");
+		*line = 0;
+	}
+}
+
+static void print_plain_qstats(struct netdev_qstats_get_list *qstats)
+{
+	ynl_dump_foreach(qstats, qs) {
+		char ifname[IF_NAMESIZE];
+		const char *name;
+		int n;
+
+		name = if_indextoname(qs->ifindex, ifname);
+		if (name)
+			printf("%s", name);
+		else
+			printf("ifindex:%u", qs->ifindex);
+
+		if (qs->_present.queue_type && qs->_present.queue_id)
+			printf("\t%s-%-3u",
+			       netdev_queue_type_str(qs->queue_type),
+			       qs->queue_id);
+		else
+			printf("\t      ");
+
+		n = 1;
+
+		/* Basic counters */
+		print_one(qs->_present.rx_packets, "rx-packets", qs->rx_packets, &n);
+		print_one(qs->_present.rx_bytes, "rx-bytes", qs->rx_bytes, &n);
+		print_one(qs->_present.tx_packets, "tx-packets", qs->tx_packets, &n);
+		print_one(qs->_present.tx_bytes, "tx-bytes", qs->tx_bytes, &n);
+
+		/* RX error/drop counters */
+		print_one(qs->_present.rx_alloc_fail, "rx-alloc-fail",
+			  qs->rx_alloc_fail, &n);
+		print_one(qs->_present.rx_hw_drops, "rx-hw-drops",
+			  qs->rx_hw_drops, &n);
+		print_one(qs->_present.rx_hw_drop_overruns, "rx-hw-drop-overruns",
+			  qs->rx_hw_drop_overruns, &n);
+		print_one(qs->_present.rx_hw_drop_ratelimits, "rx-hw-drop-ratelimits",
+			  qs->rx_hw_drop_ratelimits, &n);
+
+		/* RX checksum counters */
+		print_one(qs->_present.rx_csum_complete, "rx-csum-complete",
+			  qs->rx_csum_complete, &n);
+		print_one(qs->_present.rx_csum_unnecessary, "rx-csum-unnecessary",
+			  qs->rx_csum_unnecessary, &n);
+		print_one(qs->_present.rx_csum_none, "rx-csum-none",
+			  qs->rx_csum_none, &n);
+		print_one(qs->_present.rx_csum_bad, "rx-csum-bad",
+			  qs->rx_csum_bad, &n);
+
+		/* RX GRO counters */
+		print_one(qs->_present.rx_hw_gro_packets, "rx-hw-gro-packets",
+			  qs->rx_hw_gro_packets, &n);
+		print_one(qs->_present.rx_hw_gro_bytes, "rx-hw-gro-bytes",
+			  qs->rx_hw_gro_bytes, &n);
+		print_one(qs->_present.rx_hw_gro_wire_packets, "rx-hw-gro-wire-packets",
+			  qs->rx_hw_gro_wire_packets, &n);
+		print_one(qs->_present.rx_hw_gro_wire_bytes, "rx-hw-gro-wire-bytes",
+			  qs->rx_hw_gro_wire_bytes, &n);
+
+		/* TX error/drop counters */
+		print_one(qs->_present.tx_hw_drops, "tx-hw-drops",
+			  qs->tx_hw_drops, &n);
+		print_one(qs->_present.tx_hw_drop_errors, "tx-hw-drop-errors",
+			  qs->tx_hw_drop_errors, &n);
+		print_one(qs->_present.tx_hw_drop_ratelimits, "tx-hw-drop-ratelimits",
+			  qs->tx_hw_drop_ratelimits, &n);
+
+		/* TX checksum counters */
+		print_one(qs->_present.tx_csum_none, "tx-csum-none",
+			  qs->tx_csum_none, &n);
+		print_one(qs->_present.tx_needs_csum, "tx-needs-csum",
+			  qs->tx_needs_csum, &n);
+
+		/* TX GSO counters */
+		print_one(qs->_present.tx_hw_gso_packets, "tx-hw-gso-packets",
+			  qs->tx_hw_gso_packets, &n);
+		print_one(qs->_present.tx_hw_gso_bytes, "tx-hw-gso-bytes",
+			  qs->tx_hw_gso_bytes, &n);
+		print_one(qs->_present.tx_hw_gso_wire_packets, "tx-hw-gso-wire-packets",
+			  qs->tx_hw_gso_wire_packets, &n);
+		print_one(qs->_present.tx_hw_gso_wire_bytes, "tx-hw-gso-wire-bytes",
+			  qs->tx_hw_gso_wire_bytes, &n);
+
+		/* TX queue control */
+		print_one(qs->_present.tx_stop, "tx-stop", qs->tx_stop, &n);
+		print_one(qs->_present.tx_wake, "tx-wake", qs->tx_wake, &n);
+
+		if (n)
+			printf("\n");
+	}
+}
+
+static int do_show(int argc, char **argv)
+{
+	struct netdev_qstats_get_list *qstats;
+	struct netdev_qstats_get_req *req;
+	struct ynl_error yerr;
+	struct ynl_sock *ys;
+	int ret = 0;
+
+	/* Parse options */
+	while (argc > 0) {
+		if (is_prefix(*argv, "scope") || is_prefix(*argv, "group-by")) {
+			NEXT_ARG();
+
+			if (!REQ_ARGS(1))
+				return -1;
+
+			if (is_prefix(*argv, "queue")) {
+				scope = NETDEV_QSTATS_SCOPE_QUEUE;
+			} else if (is_prefix(*argv, "device")) {
+				scope = 0;
+			} else {
+				p_err("invalid scope value '%s'", *argv);
+				return -1;
+			}
+			NEXT_ARG();
+		} else {
+			p_err("unknown option '%s'", *argv);
+			return -1;
+		}
+	}
+
+	ys = ynl_sock_create(&ynl_netdev_family, &yerr);
+	if (!ys) {
+		p_err("YNL: %s", yerr.msg);
+		return -1;
+	}
+
+	req = netdev_qstats_get_req_alloc();
+	if (!req) {
+		p_err("failed to allocate qstats request");
+		ret = -1;
+		goto exit_close;
+	}
+
+	if (scope)
+		netdev_qstats_get_req_set_scope(req, scope);
+
+	qstats = netdev_qstats_get_dump(ys, req);
+	netdev_qstats_get_req_free(req);
+	if (!qstats) {
+		p_err("failed to get queue stats: %s", ys->err.msg);
+		ret = -1;
+		goto exit_close;
+	}
+
+	/* Print the stats as returned by the kernel */
+	if (json_output)
+		print_json_qstats(qstats);
+	else
+		print_plain_qstats(qstats);
+
+	netdev_qstats_get_list_free(qstats);
+exit_close:
+	ynl_sock_destroy(ys);
+	return ret;
+}
+
+static int do_help(int argc __attribute__((unused)),
+		   char **argv __attribute__((unused)))
+{
+	if (json_output) {
+		jsonw_null(json_wtr);
+		return 0;
+	}
+
+	fprintf(stderr,
+		"Usage: %s qstats { COMMAND | help }\n"
+		"       %s qstats [ show ] [ OPTIONS ]\n"
+		"\n"
+		"       OPTIONS := { scope queue | group-by { device | queue } }\n"
+		"\n"
+		"       show                  - Display queue statistics (default)\n"
+		"                               Statistics are aggregated for the entire device.\n"
+		"       show scope queue      - Display per-queue statistics\n"
+		"       show group-by device  - Display device-aggregated statistics (default)\n"
+		"       show group-by queue   - Display per-queue statistics\n"
+		"",
+		bin_name, bin_name);
+
+	return 0;
+}
+
+static const struct cmd qstats_cmds[] = {
+	{ "show",	do_show },
+	{ "help",	do_help },
+	{ 0 }
+};
+
+int do_qstats(int argc, char **argv)
+{
+	return cmd_select(qstats_cmds, argc, argv, do_help);
+}