[PATCH net v2] net: systemport: Fix software statistics for SYSTEMPORT Lite

[PATCH net v2] net: systemport: Fix software statistics for SYSTEMPORT Lite

[Florian Fainelli]

With SYSTEMPORT Lite we have holes in our statistics layout that make us
skip over the hardware MIB counters, bcm_sysport_get_stats() was not
taking that into account resulting in reporting 0 for all SW-maintained
statistics, fix this by skipping accordingly.

Fixes: 44a4524c54af ("net: systemport: Add support for SYSTEMPORT Lite")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
Changes in v2:

- no debugging

 drivers/net/ethernet/broadcom/bcmsysport.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 5333601f855f..dc3052751bc1 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -449,6 +449,10 @@ static void bcm_sysport_get_stats(struct net_device *dev,
 			p = (char *)&dev->stats;
 		else
 			p = (char *)priv;
+
+		if (priv->is_lite && !bcm_sysport_lite_stat_valid(s->type))
+			continue;
+
 		p += s->stat_offset;
 		data[j] = *(unsigned long *)p;
 		j++;
-- 
2.9.3

Re: [PATCH net v2] net: systemport: Fix software statistics for SYSTEMPORT Lite

[David Miller]

From: Florian Fainelli <f.fainelli@gmail.com>
Date: Tue,  8 Aug 2017 14:45:09 -0700

> With SYSTEMPORT Lite we have holes in our statistics layout that make us
> skip over the hardware MIB counters, bcm_sysport_get_stats() was not
> taking that into account resulting in reporting 0 for all SW-maintained
> statistics, fix this by skipping accordingly.
> 
> Fixes: 44a4524c54af ("net: systemport: Add support for SYSTEMPORT Lite")
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Applied, thanks.