[Bridge] [PATCH AUTOSEL 5.13 078/189] net: bridge: mrp: Update ring transitions.

Sasha Levin sashal at kernel.org
Tue Jul 6 11:12:18 UTC 2021


From: Horatiu Vultur <horatiu.vultur at microchip.com>

[ Upstream commit fcb34635854a5a5814227628867ea914a9805384 ]

According to the standard IEC 62439-2, the number of transitions needs
to be counted for each transition 'between' ring state open and ring
state closed and not from open state to closed state.

Therefore fix this for both ring and interconnect ring.

Signed-off-by: Horatiu Vultur <horatiu.vultur at microchip.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 net/bridge/br_mrp.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c
index cd2b1e424e54..f7012b7d7ce4 100644
--- a/net/bridge/br_mrp.c
+++ b/net/bridge/br_mrp.c
@@ -627,8 +627,7 @@ int br_mrp_set_ring_state(struct net_bridge *br,
 	if (!mrp)
 		return -EINVAL;
 
-	if (mrp->ring_state == BR_MRP_RING_STATE_CLOSED &&
-	    state->ring_state != BR_MRP_RING_STATE_CLOSED)
+	if (mrp->ring_state != state->ring_state)
 		mrp->ring_transitions++;
 
 	mrp->ring_state = state->ring_state;
@@ -715,8 +714,7 @@ int br_mrp_set_in_state(struct net_bridge *br, struct br_mrp_in_state *state)
 	if (!mrp)
 		return -EINVAL;
 
-	if (mrp->in_state == BR_MRP_IN_STATE_CLOSED &&
-	    state->in_state != BR_MRP_IN_STATE_CLOSED)
+	if (mrp->in_state != state->in_state)
 		mrp->in_transitions++;
 
 	mrp->in_state = state->in_state;
-- 
2.30.2



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