examples/vm_power: send CPU capabilities on VM request

Send capabilities for requested cores.

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/channel_monitor.c b/examples/vm_power_manager/channel_monitor.c
index e8d12d1..090c2a9 100644 (file)
--- a/examples/vm_power_manager/channel_monitor.c
+++ b/examples/vm_power_manager/channel_monitor.c
@@ -31,6 +31,7 @@
 #ifdef RTE_LIBRTE_I40E_PMD
 #include <rte_pmd_i40e.h>
 #endif
+#include <rte_power.h>
 
 #include <libvirt/libvirt.h>
 #include "channel_monitor.h"
@@ -749,6 +750,60 @@ send_freq(struct channel_packet *pkt,
                        chan_info);
 }
 
+static int
+send_capabilities(struct channel_packet *pkt,
+               struct channel_info *chan_info,
+               bool list_requested)
+{
+       unsigned int vcore_id = pkt->resource_id;
+       struct channel_packet_caps_list channel_pkt_caps_list;
+       struct vm_info info;
+       struct rte_power_core_capabilities caps;
+       int ret;
+
+       if (get_info_vm(pkt->vm_name, &info) != 0)
+               return -1;
+
+       if (!list_requested && vcore_id >= MAX_VCPU_PER_VM)
+               return -1;
+
+       if (!info.allow_query)
+               return -1;
+
+       channel_pkt_caps_list.command = CPU_POWER_CAPS_LIST;
+       channel_pkt_caps_list.num_vcpu = info.num_vcpus;
+
+       if (list_requested) {
+               unsigned int i;
+               for (i = 0; i < info.num_vcpus; i++) {
+                       ret = rte_power_get_capabilities(info.pcpu_map[i],
+                                       &caps);
+                       if (ret == 0) {
+                               channel_pkt_caps_list.turbo[i] =
+                                               caps.turbo;
+                               channel_pkt_caps_list.priority[i] =
+                                               caps.priority;
+                       } else
+                               return -1;
+
+               }
+       } else {
+               ret = rte_power_get_capabilities(info.pcpu_map[vcore_id],
+                               &caps);
+               if (ret == 0) {
+                       channel_pkt_caps_list.turbo[vcore_id] =
+                                       caps.turbo;
+                       channel_pkt_caps_list.priority[vcore_id] =
+                                       caps.priority;
+               } else
+                       return -1;
+       }
+
+       return write_binary_packet(&channel_pkt_caps_list,
+                       sizeof(channel_pkt_caps_list),
+                       chan_info);
+}
+
 static int
 send_ack_for_received_cmd(struct channel_packet *pkt,
                struct channel_info *chan_info,
@@ -857,6 +912,18 @@ process_request(struct channel_packet *pkt, struct channel_info *chan_info)
                        RTE_LOG(ERR, CHANNEL_MONITOR, "Error during frequency sending.\n");
        }
 
+       if (pkt->command == CPU_POWER_QUERY_CAPS_LIST ||
+               pkt->command == CPU_POWER_QUERY_CAPS) {
+
+               RTE_LOG(INFO, CHANNEL_MONITOR,
+                       "Capabilities for %s requested.\n", pkt->vm_name);
+               int ret = send_capabilities(pkt,
+                               chan_info,
+                               pkt->command == CPU_POWER_QUERY_CAPS_LIST);
+               if (ret < 0)
+                       RTE_LOG(ERR, CHANNEL_MONITOR, "Error during sending capabilities.\n");
+       }
+
        /*
         * Return is not checked as channel status may have been set to DISABLED
         * from management thread