netdev - [PATCH v3 15/15] net: dsa: Provide additional RMON statistics

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1414604707-22407-16-git-send-email-linux@roeck-us.net>
Date:	Wed, 29 Oct 2014 10:45:07 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	netdev@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	Andrew Lunn <andrew@...n.ch>, linux-kernel@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH v3 15/15] net: dsa: Provide additional RMON statistics

Display sw_in_discards, sw_in_filtered, and sw_out_filtered for chips
supported by mv88e6123_61_65 and mv88e6352 drivers.

The variables are provided in port registers, not the normal status registers.
Mark by adding 0x100 to the register offset and add special handling code
to mv88e6xxx_get_ethtool_stats.

Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
v3:
- No change
v2:
- No change

 drivers/net/dsa/mv88e6123_61_65.c |  3 +++
 drivers/net/dsa/mv88e6352.c       |  3 +++
 drivers/net/dsa/mv88e6xxx.c       | 26 +++++++++++++++++++++-----
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/mv88e6123_61_65.c b/drivers/net/dsa/mv88e6123_61_65.c
index e2d2e37..9a3f9e0 100644
--- a/drivers/net/dsa/mv88e6123_61_65.c
+++ b/drivers/net/dsa/mv88e6123_61_65.c
@@ -433,6 +433,9 @@ static struct mv88e6xxx_hw_stat mv88e6123_61_65_hw_stats[] = {
 	{ "hist_256_511bytes", 4, 0x0b, },
 	{ "hist_512_1023bytes", 4, 0x0c, },
 	{ "hist_1024_max_bytes", 4, 0x0d, },
+	{ "sw_in_discards", 4, 0x110, },
+	{ "sw_in_filtered", 2, 0x112, },
+	{ "sw_out_filtered", 2, 0x113, },
 };
 
 static void
diff --git a/drivers/net/dsa/mv88e6352.c b/drivers/net/dsa/mv88e6352.c
index d5bbe49..258d9ef 100644
--- a/drivers/net/dsa/mv88e6352.c
+++ b/drivers/net/dsa/mv88e6352.c
@@ -539,6 +539,9 @@ static struct mv88e6xxx_hw_stat mv88e6352_hw_stats[] = {
 	{ "hist_256_511bytes", 4, 0x0b, },
 	{ "hist_512_1023bytes", 4, 0x0c, },
 	{ "hist_1024_max_bytes", 4, 0x0d, },
+	{ "sw_in_discards", 4, 0x110, },
+	{ "sw_in_filtered", 2, 0x112, },
+	{ "sw_out_filtered", 2, 0x113, },
 };
 
 static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr)
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index c071fde..da558d8 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -485,17 +485,33 @@ void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
 	for (i = 0; i < nr_stats; i++) {
 		struct mv88e6xxx_hw_stat *s = stats + i;
 		u32 low;
-		u32 high;
-
+		u32 high = 0;
+
+		if (s->reg >= 0x100) {
+			int ret;
+
+			ret = mv88e6xxx_reg_read(ds, REG_PORT(port),
+						 s->reg - 0x100);
+			if (ret < 0)
+				goto error;
+			low = ret;
+			if (s->sizeof_stat == 4) {
+				ret = mv88e6xxx_reg_read(ds, REG_PORT(port),
+							 s->reg - 0x100 + 1);
+				if (ret < 0)
+					goto error;
+				high = ret;
+			}
+			data[i] = (((u64)high) << 16) | low;
+			continue;
+		}
 		mv88e6xxx_stats_read(ds, s->reg, &low);
 		if (s->sizeof_stat == 8)
 			mv88e6xxx_stats_read(ds, s->reg + 1, &high);
-		else
-			high = 0;
 
 		data[i] = (((u64)high) << 32) | low;
 	}
-
+error:
 	mutex_unlock(&ps->stats_mutex);
 }
 
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html