diff mbox series

[05/12] ethdev: add callback support for telemetry

Message ID 20200319171907.60891-6-ciara.power@intel.com (mailing list archive)
State Superseded, archived
Delegated to: David Marchand
Headers
Series update and simplify telemetry library. |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail Compilation issues

Commit Message

Power, Ciara March 19, 2020, 5:19 p.m. UTC 
  From: Bruce Richardson <bruce.richardson@intel.com>

The ethdev library now registers commands with telemetry, and
implements the callback functions. These commands allow the list of
ethdev ports and the stats for a port to be queried.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Signed-off-by: Ciara Power <ciara.power@intel.com>
---
 lib/librte_ethdev/Makefile     |  4 ++
 lib/librte_ethdev/meson.build  |  4 ++
 lib/librte_ethdev/rte_ethdev.c | 79 ++++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+)
diff mbox series

Patch

diff --git a/lib/librte_ethdev/Makefile b/lib/librte_ethdev/Makefile
index b627e4e23..4ba9cb8f4 100644
--- a/lib/librte_ethdev/Makefile
+++ b/lib/librte_ethdev/Makefile
@@ -24,6 +24,10 @@  SRCS-y += rte_tm.c
 SRCS-y += rte_mtr.c
 SRCS-y += ethdev_profile.c
 
+ifeq ($(CONFIG_RTE_LIBRTE_TELEMETRY),y)
+LDLIBS += -lrte_telemetry
+endif
+
 #
 # Export include files
 #
diff --git a/lib/librte_ethdev/meson.build b/lib/librte_ethdev/meson.build
index 3537f22f5..072805cf1 100644
--- a/lib/librte_ethdev/meson.build
+++ b/lib/librte_ethdev/meson.build
@@ -26,3 +26,7 @@  headers = files('rte_ethdev.h',
 	'rte_tm_driver.h')
 
 deps += ['net', 'kvargs', 'meter']
+
+if dpdk_conf.has('RTE_LIBRTE_TELEMETRY')
+	deps += ['telemetry']
+endif
diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 774c721b3..e7646a9b3 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -38,6 +38,9 @@ 
 #include <rte_kvargs.h>
 #include <rte_class.h>
 #include <rte_ether.h>
+#ifdef RTE_LIBRTE_TELEMETRY
+#include <rte_telemetry.h>
+#endif
 
 #include "rte_ethdev.h"
 #include "rte_ethdev_driver.h"
@@ -5189,9 +5192,85 @@  rte_eth_devargs_parse(const char *dargs, struct rte_eth_devargs *eth_da)
 	return result;
 }
 
+#ifdef RTE_LIBRTE_TELEMETRY
+static int
+handle_port_list(const char *cmd __rte_unused,
+		const char *params __rte_unused,
+		char *buffer, int buf_len)
+{
+	int used = 0;
+	int port_id;
+
+	used = strlcpy(buffer, "[", buf_len);
+	RTE_ETH_FOREACH_DEV(port_id)
+		used += snprintf(buffer + used, buf_len - used, "%d,", port_id);
+	buffer[used - 1] = ']';
+	return used;
+}
+
+static int
+handle_port_stats(const char *cmd __rte_unused,
+		const char *params,
+		char *buffer, int buf_len)
+{
+	struct rte_eth_xstat *eth_xstats;
+	struct rte_eth_xstat_name *xstat_names;
+	int port_id, num_xstats;
+	int i, ret;
+	int used = 0;
+
+	if (params == NULL || strlen(params) == 0 || !isdigit(*params))
+		return -1;
+
+	port_id = atoi(params);
+	if (!rte_eth_dev_is_valid_port(port_id))
+		return -1;
+
+	used = strlcpy(buffer, "{", buf_len);
+
+	num_xstats = rte_eth_xstats_get(port_id, NULL, 0);
+	if (num_xstats < 0)
+		return -1;
+
+	/* use one malloc for both names and stats */
+	eth_xstats = malloc((sizeof(struct rte_eth_xstat) +
+			sizeof(struct rte_eth_xstat_name)) * num_xstats);
+	if (eth_xstats == NULL)
+		return -1;
+	xstat_names = (void *)&eth_xstats[num_xstats];
+
+	ret = rte_eth_xstats_get_names(port_id, xstat_names, num_xstats);
+	if (ret < 0 || ret > num_xstats) {
+		free(eth_xstats);
+		return -1;
+	}
+
+	ret = rte_eth_xstats_get(port_id, eth_xstats, num_xstats);
+	if (ret < 0 || ret > num_xstats) {
+		free(eth_xstats);
+		return -1;
+	}
+
+	for (i = 0; i < num_xstats; i++) {
+		ret = snprintf(buffer + used, buf_len - used, "\"%s\":%"PRIu64",",
+				xstat_names[i].name, eth_xstats[i].value);
+		if (ret + used >= buf_len)
+			break;
+		used += ret;
+	}
+
+	buffer[used - 1] = '}';
+	return used;
+}
+#endif
+
 RTE_INIT(ethdev_init_log)
 {
 	rte_eth_dev_logtype = rte_log_register("lib.ethdev");
 	if (rte_eth_dev_logtype >= 0)
 		rte_log_set_level(rte_eth_dev_logtype, RTE_LOG_INFO);
+#ifdef RTE_LIBRTE_TELEMETRY
+	rte_telemetry_register_cmd("/ethdev/list", handle_port_list);
+	rte_telemetry_register_cmd("/ethdev/stats", handle_port_stats);
+#endif
 }