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[09/10] iwlwifi: mei: clear the sap data header before sending

Message ID 20220517120045.8dd3423cf683.I02976028eaa6aab395cb2e701fa7127212762eb7@changeid (mailing list archive)
State Accepted
Delegated to: Gregory Greenman
Headers show
Series iwlwifi: updates intended for v5.18 2022-05-17 | expand

Commit Message

Greenman, Gregory May 17, 2022, 9:05 a.m. UTC 
From: Avraham Stern <avraham.stern@intel.com>

The SAP data header has some fields that are marked as reserved
but are actually in use by CSME. Clear those fields before sending
the data to avoid having random values in those fields.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mei/main.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c
index b4f45234cfc8..3d2eb15a9662 100644
--- a/drivers/net/wireless/intel/iwlwifi/mei/main.c
+++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c
@@ -493,6 +493,7 @@  void iwl_mei_add_data_to_ring(struct sk_buff *skb, bool cb_tx)
 	if (cb_tx) {
 		struct iwl_sap_cb_data *cb_hdr = skb_push(skb, sizeof(*cb_hdr));
 
+		memset(cb_hdr, 0, sizeof(*cb_hdr));
 		cb_hdr->hdr.type = cpu_to_le16(SAP_MSG_CB_DATA_PACKET);
 		cb_hdr->hdr.len = cpu_to_le16(skb->len - sizeof(cb_hdr->hdr));
 		cb_hdr->hdr.seq_num = cpu_to_le32(atomic_inc_return(&mei->sap_seq_no));