netdev - [PATCH iproute2-next 07/11] ipstats: Add a group "offload", subgroup "cpu

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Date:   Fri, 22 Apr 2022 10:30:56 +0200
From:   Petr Machata <petrm@...dia.com>
To:     <netdev@...r.kernel.org>
CC:     David Ahern <dsahern@...il.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Ido Schimmel <idosch@...dia.com>,
        Petr Machata <petrm@...dia.com>
Subject: [PATCH iproute2-next 07/11] ipstats: Add a group "offload", subgroup "cpu_hit"

Add a new group, "offload", for showing counters from the
IFLA_STATS_LINK_OFFLOAD_XSTATS nest, and a subgroup "cpu_hit" for the
IFLA_OFFLOAD_XSTATS_CPU_HIT stats suite.

For example:

 # ip stats show dev swp1 group offload subgroup cpu_hit
 4178: swp1: group offload subgroup cpu_hit
     RX:  bytes packets errors dropped  missed   mcast
          45522     353      0       0       0       0
     TX:  bytes packets errors dropped carrier collsns
          46054     355      0       0       0       0

 # ip -j stats show dev swp1 group offload subgroup cpu_hit | jq
 [
   {
     "ifindex": 4178,
     "ifname": "swp1",
     "group": "offload",
     "subgroup": "cpu_hit",
     "stats64": {
       "rx": {
         "bytes": 45522,
         "packets": 353,
         "errors": 0,
         "dropped": 0,
         "over_errors": 0,
         "multicast": 0
       },
       "tx": {
         "bytes": 46054,
         "packets": 355,
         "errors": 0,
         "dropped": 0,
         "carrier_errors": 0,
         "collisions": 0
       }
     }
   }
 ]

Signed-off-by: Petr Machata <petrm@...dia.com>
Reviewed-by: Ido Schimmel <idosch@...dia.com>
---
 ip/ipstats.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/ip/ipstats.c b/ip/ipstats.c
index e4f97ddd..283fba4e 100644
--- a/ip/ipstats.c
+++ b/ip/ipstats.c
@@ -164,6 +164,42 @@ static int ipstats_show_64(struct ipstats_stat_show_attrs *attrs,
 	return 0;
 }
 
+static void
+ipstats_stat_desc_pack_cpu_hit(struct ipstats_stat_dump_filters *filters,
+			       const struct ipstats_stat_desc *desc)
+{
+	ipstats_stat_desc_enable_bit(filters,
+				     IFLA_STATS_LINK_OFFLOAD_XSTATS,
+				     IFLA_OFFLOAD_XSTATS_CPU_HIT);
+}
+
+static int ipstats_stat_desc_show_cpu_hit(struct ipstats_stat_show_attrs *attrs,
+					  const struct ipstats_stat_desc *desc)
+{
+	print_nl();
+	return ipstats_show_64(attrs,
+			       IFLA_STATS_LINK_OFFLOAD_XSTATS,
+			       IFLA_OFFLOAD_XSTATS_CPU_HIT);
+}
+
+static const struct ipstats_stat_desc ipstats_stat_desc_offload_cpu_hit = {
+	.name = "cpu_hit",
+	.kind = IPSTATS_STAT_DESC_KIND_LEAF,
+	.pack = &ipstats_stat_desc_pack_cpu_hit,
+	.show = &ipstats_stat_desc_show_cpu_hit,
+};
+
+static const struct ipstats_stat_desc *ipstats_stat_desc_offload_subs[] = {
+	&ipstats_stat_desc_offload_cpu_hit,
+};
+
+static const struct ipstats_stat_desc ipstats_stat_desc_offload_group = {
+	.name = "offload",
+	.kind = IPSTATS_STAT_DESC_KIND_GROUP,
+	.subs = ipstats_stat_desc_offload_subs,
+	.nsubs = ARRAY_SIZE(ipstats_stat_desc_offload_subs),
+};
+
 static void
 ipstats_stat_desc_pack_link(struct ipstats_stat_dump_filters *filters,
 			    const struct ipstats_stat_desc *desc)
@@ -189,6 +225,7 @@ static const struct ipstats_stat_desc ipstats_stat_desc_toplev_link = {
 
 static const struct ipstats_stat_desc *ipstats_stat_desc_toplev_subs[] = {
 	&ipstats_stat_desc_toplev_link,
+	&ipstats_stat_desc_offload_group,
 };
 
 static const struct ipstats_stat_desc ipstats_stat_desc_toplev_group = {
-- 
2.31.1