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[iproute2,v2,3/3] ifstat: Add "sw only" extended statistics to ifstat

Message ID 1481806845-63384-4-git-send-email-nogahf@mellanox.com
State Changes Requested, archived
Delegated to: stephen hemminger
Headers show

Commit Message

Nogah Frankel Dec. 15, 2016, 1 p.m. UTC 
Add support for extended statistics of SW only type, for counting only the
packets that went via the cpu. (useful for systems with forward
offloading). It reads it from filter type IFLA_STATS_LINK_OFFLOAD_XSTATS
and sub type IFLA_OFFLOAD_XSTATS_CPU_HIT.

It is under the name 'software'
(or any shorten of it as 'soft' or simply 's')

For example:
ifstat -x s

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
---
 misc/ifstat.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/misc/ifstat.c b/misc/ifstat.c
index ac99d04..62f1f2b 100644
--- a/misc/ifstat.c
+++ b/misc/ifstat.c
@@ -730,7 +730,8 @@  static void xstat_usage(void)
 {
 	fprintf(stderr,
 "Usage: ifstat supported xstats:\n"
-"       64bits         default stats, with 64 bits support\n");
+"       64bits         default stats, with 64 bits support\n"
+"       software        SW stats. Counts only packets that went via the CPU\n");
 }
 
 struct extended_stats_options_t {
@@ -745,6 +746,7 @@  struct extended_stats_options_t {
  */
 static const struct extended_stats_options_t extended_stats_options[] = {
 	{"64bits", IFLA_STATS_LINK_64, NO_SUB_TYPE},
+	{"software",  IFLA_STATS_LINK_OFFLOAD_XSTATS, IFLA_OFFLOAD_XSTATS_CPU_HIT},
 };
 
 static bool get_filter_type(char *name)