netdev - [RFC 07/14] net: hstats: help in iteration over directions

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Date:   Mon, 28 Jan 2019 15:45:00 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net
Cc:     oss-drivers@...ronome.com, netdev@...r.kernel.org,
        jiri@...nulli.us, f.fainelli@...il.com, andrew@...n.ch,
        mkubecek@...e.cz, dsahern@...il.com, simon.horman@...ronome.com,
        jesse.brandeburg@...el.com, maciejromanfijalkowski@...il.com,
        vasundhara-v.volam@...adcom.com, michael.chan@...adcom.com,
        shalomt@...lanox.com, idosch@...lanox.com,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [RFC 07/14] net: hstats: help in iteration over directions

Devices (or drivers) often keep the same statistics in both
directions, aid iterating over such statistics with some
helpers.

Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 include/net/hstats.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/include/net/hstats.h b/include/net/hstats.h
index 00f4d9334422..bb83f50768b1 100644
--- a/include/net/hstats.h
+++ b/include/net/hstats.h
@@ -69,6 +69,12 @@ void rtnl_hstat_add_grp(struct rtnl_hstat_req *req,
 bool rtnl_hstat_qual_is_set(struct rtnl_hstat_req *req, int qual);
 int rtnl_hstat_qual_get(struct rtnl_hstat_req *req, int qual);
 
+static inline bool rtnl_hstat_is_rx(struct rtnl_hstat_req *req)
+{
+	return rtnl_hstat_qual_get(req, RTNL_HSTATS_QUAL_DIRECTION) ==
+		IFLA_HSTATS_QUAL_DIR_RX;
+}
+
 static inline void
 rtnl_hstat_dump(struct rtnl_hstat_req *req, const int id, const u64 val)
 {
@@ -106,4 +112,13 @@ enum {
 	[RTNL_HSTATS_QUAL_DIRECTION] = {				\
 		.constant	= IFLA_HSTATS_QUAL_DIR_ ##dir,		\
 	}
+
+#define RTNL_HSTATS_QUALS_BASIC_BIDIR(type)				\
+	[RTNL_HSTATS_QUAL_TYPE] = {					\
+		.constant	= IFLA_HSTATS_QUAL_TYPE_ ##type,	\
+	},								\
+	[RTNL_HSTATS_QUAL_DIRECTION] = {				\
+		.min		= IFLA_HSTATS_QUAL_DIR_RX,		\
+		.max		= IFLA_HSTATS_QUAL_DIR_TX + 1,		\
+	}
 #endif
-- 
2.19.2