iwlwifi: pcie: gen3: indicate 8k/12k RB size to device

Newer firmware versions will parse a few extra bits in the
context info to be able to determine whether we are using
bigger than 4k RBs, indicate 8k/12k to them if we actually
use those (e.g. for sniffer based on the module parameter).

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.20200529092401.f83f994572ca.Ibcfd66c3f9b69e68a53b3b2df8331ffb225db655@changeid

drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c

@@ -138,9 +138,17 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 	case IWL_AMSDU_2K:
 		break;
 	case IWL_AMSDU_4K:
+		control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_4K;
+		break;
 	case IWL_AMSDU_8K:
+		control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_4K;
+		/* if firmware supports the ext size, tell it */
+		control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_EXT_8K;
+		break;
 	case IWL_AMSDU_12K:
 		control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_4K;
+		/* if firmware supports the ext size, tell it */
+		control_flags |= IWL_PRPH_SCRATCH_RB_SIZE_EXT_12K;
 		break;
 	}