examples/vm_power: send capabilities request from guest

Send request to power manager for core id provided
by user to get related capabilities.

Signed-off-by: Marcin Hajkowski <marcinx.hajkowski@intel.com>
Tested-by: David Hunt <david.hunt@intel.com>
Acked-by: Lee Daly <lee.daly@intel.com>

diff --git a/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c b/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
index 7aa09cb..eb0ae91 100644 (file)
--- a/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
+++ b/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c
@@ -145,7 +145,7 @@ struct cmd_freq_list_result {
 };
 
 static int
-query_freq_list(struct channel_packet *pkt, unsigned int lcore_id)
+query_data(struct channel_packet *pkt, unsigned int lcore_id)
 {
        int ret;
        ret = rte_power_guest_channel_send_msg(pkt, lcore_id);
@@ -219,7 +219,7 @@ cmd_query_freq_list_parsed(void *parsed_result,
                pkt.resource_id = lcore_id;
        }
 
-       ret = query_freq_list(&pkt, lcore_id);
+       ret = query_data(&pkt, lcore_id);
        if (ret < 0) {
                cmdline_printf(cl, "Error during sending frequency list query.\n");
                return;
@@ -261,6 +261,120 @@ cmdline_parse_inst_t cmd_query_freq_list = {
        },
 };
 
+struct cmd_query_caps_result {
+       cmdline_fixed_string_t query_caps;
+       cmdline_fixed_string_t cpu_num;
+};
+
+static int
+receive_capabilities(struct channel_packet_caps_list *pkt_caps_list,
+               unsigned int lcore_id)
+{
+       int ret;
+
+       ret = rte_power_guest_channel_receive_msg(pkt_caps_list,
+               sizeof(struct channel_packet_caps_list),
+               lcore_id);
+       if (ret < 0) {
+               RTE_LOG(ERR, GUEST_CLI, "Error receiving message.\n");
+               return -1;
+       }
+       if (pkt_caps_list->command != CPU_POWER_CAPS_LIST) {
+               RTE_LOG(ERR, GUEST_CLI, "Unexpected message received.\n");
+               return -1;
+       }
+       return 0;
+}
+
+static void
+cmd_query_caps_list_parsed(void *parsed_result,
+               __rte_unused struct cmdline *cl,
+               __rte_unused void *data)
+{
+       struct cmd_query_caps_result *res = parsed_result;
+       unsigned int lcore_id;
+       struct channel_packet_caps_list pkt_caps_list;
+       struct channel_packet pkt;
+       bool query_list = false;
+       int ret;
+       char *ep;
+
+       memset(&pkt, 0, sizeof(struct channel_packet));
+       memset(&pkt_caps_list, 0, sizeof(struct channel_packet_caps_list));
+
+       if (!strcmp(res->cpu_num, "all")) {
+
+               /* Get first enabled lcore. */
+               lcore_id = rte_get_next_lcore(-1,
+                               0,
+                               0);
+               if (lcore_id == RTE_MAX_LCORE) {
+                       cmdline_printf(cl, "Enabled core not found.\n");
+                       return;
+               }
+
+               pkt.command = CPU_POWER_QUERY_CAPS_LIST;
+               strlcpy(pkt.vm_name, policy.vm_name, sizeof(pkt.vm_name));
+               query_list = true;
+       } else {
+               errno = 0;
+               lcore_id = (unsigned int)strtol(res->cpu_num, &ep, 10);
+               if (errno != 0 || lcore_id >= MAX_VCPU_PER_VM ||
+                       ep == res->cpu_num) {
+                       cmdline_printf(cl, "Invalid parameter provided.\n");
+                       return;
+               }
+               pkt.command = CPU_POWER_QUERY_CAPS;
+               strlcpy(pkt.vm_name, policy.vm_name, sizeof(pkt.vm_name));
+               pkt.resource_id = lcore_id;
+       }
+
+       ret = query_data(&pkt, lcore_id);
+       if (ret < 0) {
+               cmdline_printf(cl, "Error during sending capabilities query.\n");
+               return;
+       }
+
+       ret = receive_capabilities(&pkt_caps_list, lcore_id);
+       if (ret < 0) {
+               cmdline_printf(cl, "Error during capabilities reception.\n");
+               return;
+       }
+       if (query_list) {
+               unsigned int i;
+               for (i = 0; i < pkt_caps_list.num_vcpu; ++i)
+                       cmdline_printf(cl, "Capabilities of [%d] vcore are:"
+                                       " turbo possibility: %ld, is priority core: %ld.\n",
+                                       i,
+                                       pkt_caps_list.turbo[i],
+                                       pkt_caps_list.priority[i]);
+       } else {
+               cmdline_printf(cl, "Capabilities of [%d] vcore are:"
+                               " turbo possibility: %ld, is priority core: %ld.\n",
+                               lcore_id,
+                               pkt_caps_list.turbo[lcore_id],
+                               pkt_caps_list.priority[lcore_id]);
+       }
+}
+
+cmdline_parse_token_string_t cmd_query_caps_token =
+       TOKEN_STRING_INITIALIZER(struct cmd_query_caps_result, query_caps, "query_cpu_caps");
+cmdline_parse_token_string_t cmd_query_caps_cpu_num_token =
+       TOKEN_STRING_INITIALIZER(struct cmd_query_caps_result, cpu_num, NULL);
+
+cmdline_parse_inst_t cmd_query_caps_list = {
+       .f = cmd_query_caps_list_parsed,  /* function to call */
+       .data = NULL,      /* 2nd arg of func */
+       .help_str = "query_cpu_caps <core_num>|all, request"
+                               " information regarding virtual core capabilities."
+                               " The keyword 'all' will query list of all vcores for the VM",
+       .tokens = {        /* token list, NULL terminated */
+               (void *)&cmd_query_caps_token,
+               (void *)&cmd_query_caps_cpu_num_token,
+               NULL,
+       },
+};
+
 static int
 check_response_cmd(unsigned int lcore_id, int *result)
 {
@@ -418,6 +532,7 @@ cmdline_parse_ctx_t main_ctx[] = {
                (cmdline_parse_inst_t *)&cmd_send_policy_set,
                (cmdline_parse_inst_t *)&cmd_set_cpu_freq_set,
                (cmdline_parse_inst_t *)&cmd_query_freq_list,
+               (cmdline_parse_inst_t *)&cmd_query_caps_list,
                NULL,
 };