From: Marcin Hajkowski <marcinx.hajkow...@intel.com> Extend vm_power_guest to check incoming confirmations of messages previously sent to host.
Signed-off-by: Marcin Hajkowski <marcinx.hajkow...@intel.com> --- examples/vm_power_manager/guest_cli/Makefile | 1 + .../guest_cli/vm_power_cli_guest.c | 73 +++++++++++++++---- 2 files changed, 61 insertions(+), 13 deletions(-) diff --git a/examples/vm_power_manager/guest_cli/Makefile b/examples/vm_power_manager/guest_cli/Makefile index e35a68d0f..67cf08193 100644 --- a/examples/vm_power_manager/guest_cli/Makefile +++ b/examples/vm_power_manager/guest_cli/Makefile @@ -18,6 +18,7 @@ SRCS-y := main.c vm_power_cli_guest.c parse.c CFLAGS += -O3 -I$(RTE_SDK)/lib/librte_power/ CFLAGS += $(WERROR_FLAGS) +CFLAGS += -DALLOW_EXPERIMENTAL_API # workaround for a gcc bug with noreturn attribute # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603 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 2d9e7689a..49ed7b208 100644 --- a/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c +++ b/examples/vm_power_manager/guest_cli/vm_power_cli_guest.c @@ -27,7 +27,7 @@ #define CHANNEL_PATH "/dev/virtio-ports/virtio.serial.port.poweragent" -#define RTE_LOGTYPE_GUEST_CHANNEL RTE_LOGTYPE_USER1 +#define RTE_LOGTYPE_GUEST_CLI RTE_LOGTYPE_USER1 struct cmd_quit_result { cmdline_fixed_string_t quit; @@ -132,6 +132,32 @@ struct cmd_set_cpu_freq_result { cmdline_fixed_string_t cmd; }; +static int +check_response_cmd(unsigned int lcore_id, int *result) +{ + struct channel_packet pkt; + int ret; + + ret = rte_power_guest_channel_receive_msg(&pkt, lcore_id); + if (ret < 0) + return -1; + + switch (pkt.command) { + case(CPU_POWER_CMD_ACK): + *result = 1; + break; + case(CPU_POWER_CMD_NACK): + *result = 0; + break; + default: + RTE_LOG(ERR, GUEST_CLI, + "Received invalid response from host, expecting ACK/NACK.\n"); + return -1; + } + + return 0; +} + static void cmd_set_cpu_freq_parsed(void *parsed_result, struct cmdline *cl, __attribute__((unused)) void *data) @@ -139,20 +165,31 @@ cmd_set_cpu_freq_parsed(void *parsed_result, struct cmdline *cl, int ret = -1; struct cmd_set_cpu_freq_result *res = parsed_result; - if (!strcmp(res->cmd , "up")) + if (!strcmp(res->cmd, "up")) ret = rte_power_freq_up(res->lcore_id); - else if (!strcmp(res->cmd , "down")) + else if (!strcmp(res->cmd, "down")) ret = rte_power_freq_down(res->lcore_id); - else if (!strcmp(res->cmd , "min")) + else if (!strcmp(res->cmd, "min")) ret = rte_power_freq_min(res->lcore_id); - else if (!strcmp(res->cmd , "max")) + else if (!strcmp(res->cmd, "max")) ret = rte_power_freq_max(res->lcore_id); else if (!strcmp(res->cmd, "enable_turbo")) ret = rte_power_freq_enable_turbo(res->lcore_id); else if (!strcmp(res->cmd, "disable_turbo")) ret = rte_power_freq_disable_turbo(res->lcore_id); - if (ret != 1) + + if (ret != 1) { cmdline_printf(cl, "Error sending message: %s\n", strerror(ret)); + return; + } + int result; + ret = check_response_cmd(res->lcore_id, &result); + if (ret < 0) { + RTE_LOG(ERR, GUEST_CLI, "No confirmation for sent message received\n"); + } else { + cmdline_printf(cl, "%s received for message sent to host.\n", + result == 1 ? "ACK" : "NACK"); + } } cmdline_parse_token_string_t cmd_set_cpu_freq = @@ -185,16 +222,26 @@ struct cmd_send_policy_result { }; static inline int -send_policy(struct channel_packet *pkt) +send_policy(struct channel_packet *pkt, struct cmdline *cl) { int ret; ret = rte_power_guest_channel_send_msg(pkt, 1); - if (ret == 0) - return 1; - RTE_LOG(DEBUG, POWER, "Error sending message: %s\n", - ret > 0 ? strerror(ret) : "channel not connected"); - return -1; + if (ret < 0) { + RTE_LOG(ERR, GUEST_CLI, "Error sending message: %s\n", + ret > 0 ? strerror(ret) : "channel not connected"); + return -1; + } + + int result; + ret = check_response_cmd(1, &result); + if (ret < 0) { + RTE_LOG(ERR, GUEST_CLI, "No confirmation for sent policy received\n"); + } else { + cmdline_printf(cl, "%s for sent policy received.\n", + result == 1 ? "ACK" : "NACK"); + } + return 1; } static void @@ -206,7 +253,7 @@ cmd_send_policy_parsed(void *parsed_result, struct cmdline *cl, if (!strcmp(res->cmd, "now")) { printf("Sending Policy down now!\n"); - ret = send_policy(&policy); + ret = send_policy(&policy, cl); } if (ret != 1) cmdline_printf(cl, "Error sending message: %s\n", -- 2.17.2
