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iwlwifi: mvm: handle RX checksum on Bz devices

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On Bz devices, the hardware checksums including the SNAP header,
starting directly after the MAC header, so we don't need the
extra checks and can just pass the checksum to mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211219121514.8ef59da4e05e.Ide87c2dc8fa08eae55c013a625f4ece5184b1b63@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2021-12-19 12:18:10 +02:00 committed by Luca Coelho
parent 6772aab732
commit b6f5b647f6
1 changed files with 5 additions and 1 deletions
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6
drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
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@ -172,8 +172,12 @@ static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
* in the cases the hardware didn't handle, since it's rare to see
* such packets, even though the hardware did calculate the checksum
* in this case, just starting after the MAC header instead.
*
* Starting from Bz hardware, it calculates starting directly after
* the MAC header, so that matches mac80211's expectation.
*/
if (skb->ip_summed == CHECKSUM_COMPLETE) {
if (skb->ip_summed == CHECKSUM_COMPLETE &&
mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ) {
struct {
u8 hdr[6];
__be16 type;