wifi: brcmfmac: cyw: Fix __counted_by to be LE variant

In brcmf_cyw_mgmt_tx() the "len" counter of the struct
brcmf_mf_params_le::data flexible array is stored as little-endian via
cpu_to_le16() so the __counted_by_le() variant must be used:

	struct brcmf_mf_params_le *mf_params;
	...
	mf_params_len = offsetof(struct brcmf_mf_params_le, data) +
			(len - DOT11_MGMT_HDR_LEN);
	mf_params = kzalloc(mf_params_len, GFP_KERNEL);
	...
        mf_params->len = cpu_to_le16(len - DOT11_MGMT_HDR_LEN);

Fixes: 66f909308a7c ("wifi: brcmfmac: cyw: support external SAE authentication in station mode")
Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>>
Link: https://patch.msgid.link/20250721181810.work.575-kees@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cyw/fwil_types.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cyw/fwil_types.h
index 08c69142495ab1f21536fe1fce87689838556e29..669564382e3212872bdc1a7292e457413ec70005 100644 (file)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cyw/fwil_types.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cyw/fwil_types.h
@@ -80,7 +80,7 @@ struct brcmf_mf_params_le {
        u8 da[ETH_ALEN];
        u8 bssid[ETH_ALEN];
        __le32 packet_id;
-       u8 data[] __counted_by(len);
+       u8 data[] __counted_by_le(len);
 };
 
 #endif /* CYW_FWIL_TYPES_H_ */