From 0f3da6afeef1f63c7254965253f7e6535dc7910c Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Wed, 15 Mar 2017 15:53:49 -0400 Subject: net: dsa: check out-of-range ageing time value If a DSA switch driver cannot program an ageing time value due to it being out-of-range, switchdev will raise a stack trace before failing. To fix this, add ageing_time_min and ageing_time_max members to the dsa_switch in order for the switch drivers to optionally specify their supported ageing time limits. The DSA core will now check for provided ageing time limits and return -ERANGE from the switchdev prepare phase if the value is out-of-range. Signed-off-by: Vivien Didelot Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- include/net/dsa.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/net/dsa.h') diff --git a/include/net/dsa.h b/include/net/dsa.h index bf0e42c2a6f7..e42897fd7a96 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -233,6 +233,10 @@ struct dsa_switch { u32 phys_mii_mask; struct mii_bus *slave_mii_bus; + /* Ageing Time limits in msecs */ + unsigned int ageing_time_min; + unsigned int ageing_time_max; + /* Dynamically allocated ports, keep last */ size_t num_ports; struct dsa_port ports[]; -- cgit v1.2.3