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iwlwifi: mei: clear the sap data header before sending 

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.

Cc: stable@vger.kernel.org
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20220517120045.8dd3423cf683.I02976028eaa6aab395cb2e701fa7127212762eb7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Avraham Stern 2022-05-17 12:05:13 +03:00 committed by Johannes Berg
parent 98c0de7b26
commit 55cf10488d
1 changed files with 1 additions and 0 deletions
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1
drivers/net/wireless/intel/iwlwifi/mei/main.c
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@ -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));