[RFC,4/6] ethdev: add callback support for process-info
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Commit Message
From: Bruce Richardson <bruce.richardson@intel.com>
The ethdev library now registers commands with process_info, 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 | 2 +-
lib/librte_ethdev/rte_ethdev.c | 73 ++++++++++++++++++++++++++++++++++
2 files changed, 74 insertions(+), 1 deletion(-)
@@ -12,7 +12,7 @@ CFLAGS += -DALLOW_EXPERIMENTAL_API
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS)
LDLIBS += -lrte_net -lrte_eal -lrte_mempool -lrte_ring
-LDLIBS += -lrte_mbuf -lrte_kvargs -lrte_meter
+LDLIBS += -lrte_mbuf -lrte_kvargs -lrte_meter -lrte_process_info
EXPORT_MAP := rte_ethdev_version.map
@@ -38,6 +38,7 @@
#include <rte_kvargs.h>
#include <rte_class.h>
#include <rte_ether.h>
+#include <rte_process_info.h>
#include "rte_ethdev.h"
#include "rte_ethdev_driver.h"
@@ -5190,9 +5191,81 @@ rte_eth_devargs_parse(const char *dargs, struct rte_eth_devargs *eth_da)
return result;
}
+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 *)ð_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;
+}
+
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);
+ rte_process_info_register("/ethdev:list", handle_port_list);
+ rte_process_info_register("/ethdev:stats", handle_port_stats);
}