From cd169d799beeb738fa2d3e891960924cdcaf8414 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 30 Apr 2020 11:49:10 -0700 Subject: [PATCH] net: dsa: b53: Bound check ARL searches ARL searches are done by reading two ARL entries at a time, do not cap the search at 1024 which would only limit us to half of the possible ARL capacity, but use b53_max_arl_entries() instead which does the right multiplication between bins and indexes. Signed-off-by: Florian Fainelli Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/dsa/b53/b53_common.c | 2 +- drivers/net/dsa/b53/b53_priv.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index aa0836ac751c..9550d972f8c5 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1702,7 +1702,7 @@ int b53_fdb_dump(struct dsa_switch *ds, int port, break; } - } while (count++ < 1024); + } while (count++ < b53_max_arl_entries(priv) / 2); return 0; } diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h index 694e26cdfd4d..e942c60e4365 100644 --- a/drivers/net/dsa/b53/b53_priv.h +++ b/drivers/net/dsa/b53/b53_priv.h @@ -213,6 +213,11 @@ static inline int is58xx(struct b53_device *dev) #define B53_CPU_PORT_25 5 #define B53_CPU_PORT 8 +static inline unsigned int b53_max_arl_entries(struct b53_device *dev) +{ + return dev->num_arl_buckets * dev->num_arl_bins; +} + struct b53_device *b53_switch_alloc(struct device *base, const struct b53_io_ops *ops, void *priv);