[PATCH net v2] net: bridge: mrp: fix Option TLV length in MRP_Test frames

oui is a pointer, so sizeof(oui) is the pointer size. The MRA
Option TLV thus advertises a wrong length (15 vs 10 on x86_64),
causing misparsing of the frame on peers. Fix is to replace
with sizeof(*oui).

Fixes: f7458934b079 ("net: bridge: mrp: Update the Test frames for MRA")
Signed-off-by: David Corvaglia <redacted>
---
v2: target net and add Fixes header
v1: https://lore.kernel.org/bridge/20260724051202.61946-1-david@corvaglia.dev/ (local)
---
 net/bridge/br_mrp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c
index 3f7126a7d720..179d2470b724 100644
--- a/net/bridge/br_mrp.c
+++ b/net/bridge/br_mrp.c

@@ -215,7 +215,7 @@ static struct sk_buff *br_mrp_alloc_test_skb(struct br_mrp *mrp,
 		struct br_mrp_oui_hdr *oui = NULL;
 		u8 length;
 
-		length = sizeof(*sub_opt) + sizeof(*sub_tlv) + sizeof(oui) +
+		length = sizeof(*sub_opt) + sizeof(*sub_tlv) + sizeof(*oui) +
 			MRP_OPT_PADDING;
 		br_mrp_skb_tlv(skb, BR_MRP_TLV_HEADER_OPTION, length);
 

-- 
2.55.0