[PATCH 5.14 070/151] net: mscc: ocelot: fix VCAP filters remaining active after being deleted

Greg Kroah-Hartman
2021-10-11T14:05:37Z

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit 019d9329e7481cfaccbd8ed17b1e04ca76970f13 ]

When ocelot_flower.c calls ocelot_vcap_filter_add(), the filter has a
given filter->id.cookie. This filter is added to the block->rules list.

However, when ocelot_flower.c calls ocelot_vcap_block_find_filter_by_id()
which passes the cookie as argument, the filter is never found by
filter->id.cookie when searching through the block->rules list.

This is unsurprising, since the filter->id.cookie is an unsigned long,
but the cookie argument provided to ocelot_vcap_block_find_filter_by_id()
is a signed int, and the comparison fails.

Fixes: 50c6cc5b9283 ("net: mscc: ocelot: store a namespaced VCAP filter ID")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210930125330.2078625-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mscc/ocelot_vcap.c | 4 ++--
include/soc/mscc/ocelot_vcap.h | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_vcap.c b/drivers/net/ethernet/mscc/ocelot_vcap.c
index 7945393a0655..99d7376a70a7 100644
--- a/drivers/net/ethernet/mscc/ocelot_vcap.c
+++ b/drivers/net/ethernet/mscc/ocelot_vcap.c
@@ -998,8 +998,8 @@ ocelot_vcap_block_find_filter_by_index(struct ocelot_vcap_block *block,
}

struct ocelot_vcap_filter *
-ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block, int cookie,
- bool tc_offload)
+ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block,
+ unsigned long cookie, bool tc_offload)
{
struct ocelot_vcap_filter *filter;

diff --git a/include/soc/mscc/ocelot_vcap.h b/include/soc/mscc/ocelot_vcap.h
index 25fd525aaf92..4869ebbd438d 100644
--- a/include/soc/mscc/ocelot_vcap.h
+++ b/include/soc/mscc/ocelot_vcap.h
@@ -694,7 +694,7 @@ int ocelot_vcap_filter_add(struct ocelot *ocelot,
int ocelot_vcap_filter_del(struct ocelot *ocelot,
struct ocelot_vcap_filter *rule);
struct ocelot_vcap_filter *
-ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block, int id,
- bool tc_offload);
+ocelot_vcap_block_find_filter_by_id(struct ocelot_vcap_block *block,
+ unsigned long cookie, bool tc_offload);

#endif /* _OCELOT_VCAP_H_ */
--
2.33.0