@@ -44,7 +44,8 @@ where
1. help: show help message
2. list: list all available vdpa devices
3. create: create a new vdpa port with socket file and vdpa device address
- 4. quit: unregister vhost driver and exit the application
+ 4. stats: show statistics of virtio queues
+ 5. quit: unregister vhost driver and exit the application
Take IFCVF driver for example:
@@ -18,6 +18,7 @@
#include <cmdline_parse.h>
#include <cmdline_socket.h>
#include <cmdline_parse_string.h>
+#include <cmdline_parse_num.h>
#include <cmdline.h>
#define MAX_PATH_LEN 128
@@ -29,6 +30,9 @@ struct vdpa_port {
int did;
int vid;
uint64_t flags;
+ int stats_n;
+ struct rte_vdpa_stat_name *stats_names;
+ struct rte_vdpa_stat *stats;
};
static struct vdpa_port vports[MAX_VDPA_SAMPLE_PORTS];
@@ -199,6 +203,10 @@ struct vdpa_port {
RTE_LOG(ERR, VDPA,
"Fail to unregister vhost driver for %s.\n",
socket_path);
+ if (vport->stats_names) {
+ rte_free(vport->stats_names);
+ vport->stats_names = NULL;
+ }
}
static void
@@ -240,6 +248,7 @@ static void cmd_help_parsed(__rte_unused void *parsed_result,
" help : Show interactive instructions.\n"
" list : list all available vdpa devices.\n"
" create <socket file> <vdev addr> : create a new vdpa port.\n"
+ " stats <device ID> <virtio queue ID> : show statistics of virtio queue, 0xffff for all.\n"
" quit : exit vdpa sample app.\n"
);
}
@@ -363,6 +372,115 @@ static void cmd_create_vdpa_port_parsed(void *parsed_result,
},
};
+/* *** STATS *** */
+struct cmd_stats_result {
+ cmdline_fixed_string_t stats;
+ uint16_t did;
+ uint16_t qid;
+};
+
+static void cmd_device_stats_parsed(void *parsed_result, struct cmdline *cl,
+ __attribute__((unused)) void *data)
+{
+ struct cmd_stats_result *res = parsed_result;
+ struct rte_vdpa_device *vdev = rte_vdpa_get_device(res->did);
+ struct vdpa_port *vport = NULL;
+ uint32_t first, last;
+ int i;
+
+ if (!vdev) {
+ RTE_LOG(ERR, VDPA, "Invalid device id %" PRIu16 ".\n",
+ res->did);
+ return;
+ }
+ for (i = 0; i < RTE_MIN(MAX_VDPA_SAMPLE_PORTS, dev_total); i++) {
+ if (vports[i].did == res->did) {
+ vport = &vports[i];
+ break;
+ }
+ }
+ if (!vport) {
+ RTE_LOG(ERR, VDPA, "Device id %" PRIu16 " was not created.\n",
+ res->did);
+ return;
+ }
+ if (res->qid == 0xFFFF) {
+ first = 0;
+ last = rte_vhost_get_vring_num(vport->vid);
+ if (last == 0) {
+ RTE_LOG(ERR, VDPA, "Failed to get num of actual virtqs"
+ " for device id %d.\n", (int)res->did);
+ return;
+ }
+ last--;
+ } else {
+ first = res->qid;
+ last = res->qid;
+ }
+ if (!vport->stats_names) {
+ vport->stats_n = rte_vdpa_get_stats_names(vport->did, NULL, 0);
+ if (vport->stats_n <= 0) {
+ RTE_LOG(ERR, VDPA, "Failed to get names number of "
+ "device %d stats.\n", (int)res->did);
+ return;
+ }
+ vport->stats_names = rte_zmalloc(NULL,
+ (sizeof(*vport->stats_names) + sizeof(*vport->stats)) *
+ vport->stats_n, 0);
+ if (!vport->stats_names) {
+ RTE_LOG(ERR, VDPA, "Failed to allocate memory for stat"
+ " names of device %d.\n", (int)res->did);
+ return;
+ }
+ i = rte_vdpa_get_stats_names(vport->did, vport->stats_names,
+ vport->stats_n);
+ if (vport->stats_n != i) {
+ RTE_LOG(ERR, VDPA, "Failed to get names of device %d "
+ "stats.\n", (int)res->did);
+ return;
+ }
+ vport->stats = (struct rte_vdpa_stat *)
+ (vport->stats_names + vport->stats_n);
+ }
+ cmdline_printf(cl, "\nDevice %d:\n", (int)res->did);
+ for (; first <= last; first++) {
+ memset(vport->stats, 0, sizeof(*vport->stats) * vport->stats_n);
+ if (rte_vdpa_get_stats(vport->did, (int)first, vport->stats,
+ vport->stats_n) <= 0) {
+ RTE_LOG(ERR, VDPA, "Failed to get vdpa queue statistics"
+ " for device id %d qid %d.\n", (int)res->did,
+ (int)first);
+ return;
+ }
+ cmdline_printf(cl, "\tVirtq %" PRIu32 ":\n", first);
+ for (i = 0; i < vport->stats_n; ++i) {
+ cmdline_printf(cl, "\t\t%-*s %-16" PRIu64 "\n",
+ RTE_VDPA_STATS_NAME_SIZE,
+ vport->stats_names[vport->stats[i].id].name,
+ vport->stats[i].value);
+ }
+ }
+}
+
+cmdline_parse_token_string_t cmd_device_stats_ =
+ TOKEN_STRING_INITIALIZER(struct cmd_stats_result, stats, "stats");
+cmdline_parse_token_num_t cmd_device_id =
+ TOKEN_NUM_INITIALIZER(struct cmd_stats_result, did, UINT32);
+cmdline_parse_token_num_t cmd_queue_id =
+ TOKEN_NUM_INITIALIZER(struct cmd_stats_result, qid, UINT32);
+
+cmdline_parse_inst_t cmd_device_stats = {
+ .f = cmd_device_stats_parsed,
+ .data = NULL,
+ .help_str = "stats: show device statistics",
+ .tokens = {
+ (void *)&cmd_device_stats_,
+ (void *)&cmd_device_id,
+ (void *)&cmd_queue_id,
+ NULL,
+ },
+};
+
/* *** QUIT *** */
struct cmd_quit_result {
cmdline_fixed_string_t quit;
@@ -392,6 +510,7 @@ static void cmd_quit_parsed(__rte_unused void *parsed_result,
(cmdline_parse_inst_t *)&cmd_help,
(cmdline_parse_inst_t *)&cmd_list_vdpa_devices,
(cmdline_parse_inst_t *)&cmd_create_vdpa_port,
+ (cmdline_parse_inst_t *)&cmd_device_stats,
(cmdline_parse_inst_t *)&cmd_quit,
NULL,
};