brcmfmac: cleanup ampdu-rx host reorder code

The code for ampdu-rx host reorder is related to the firmware signalling
supported in BCDC protocol. This change moves the code to fwsignal module.

Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcdc.c

@@ -351,6 +351,12 @@ brcmf_proto_bcdc_add_tdls_peer(struct brcmf_pub *drvr, int ifidx,
 {
 }
 
+static void brcmf_proto_bcdc_rxreorder(struct brcmf_if *ifp,
+				       struct sk_buff *skb)
+{
+	brcmf_fws_rxreorder(ifp, skb);
+}
+
 int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr)
 {
 	struct brcmf_bcdc *bcdc;
@@ -372,6 +378,7 @@ int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr)
 	drvr->proto->configure_addr_mode = brcmf_proto_bcdc_configure_addr_mode;
 	drvr->proto->delete_peer = brcmf_proto_bcdc_delete_peer;
 	drvr->proto->add_tdls_peer = brcmf_proto_bcdc_add_tdls_peer;
+	drvr->proto->rxreorder = brcmf_proto_bcdc_rxreorder;
 	drvr->proto->pd = bcdc;
 
 	drvr->hdrlen += BCDC_HEADER_LEN + BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES;

drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c

@@ -40,19 +40,6 @@
 
 #define MAX_WAIT_FOR_8021X_TX			msecs_to_jiffies(950)
 
-/* AMPDU rx reordering definitions */
-#define BRCMF_RXREORDER_FLOWID_OFFSET		0
-#define BRCMF_RXREORDER_MAXIDX_OFFSET		2
-#define BRCMF_RXREORDER_FLAGS_OFFSET		4
-#define BRCMF_RXREORDER_CURIDX_OFFSET		6
-#define BRCMF_RXREORDER_EXPIDX_OFFSET		8
-
-#define BRCMF_RXREORDER_DEL_FLOW		0x01
-#define BRCMF_RXREORDER_FLUSH_ALL		0x02
-#define BRCMF_RXREORDER_CURIDX_VALID		0x04
-#define BRCMF_RXREORDER_EXPIDX_VALID		0x08
-#define BRCMF_RXREORDER_NEW_HOLE		0x10
-
 #define BRCMF_BSSIDX_INVALID			-1
 
 char *brcmf_ifname(struct brcmf_if *ifp)
@@ -342,207 +329,11 @@ void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb,
 		netif_rx_ni(skb);
 }
 
-static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
-					 u8 start, u8 end,
-					 struct sk_buff_head *skb_list)
-{
-	/* initialize return list */
-	__skb_queue_head_init(skb_list);
-
-	if (rfi->pend_pkts == 0) {
-		brcmf_dbg(INFO, "no packets in reorder queue\n");
-		return;
-	}
-
-	do {
-		if (rfi->pktslots[start]) {
-			__skb_queue_tail(skb_list, rfi->pktslots[start]);
-			rfi->pktslots[start] = NULL;
-		}
-		start++;
-		if (start > rfi->max_idx)
-			start = 0;
-	} while (start != end);
-	rfi->pend_pkts -= skb_queue_len(skb_list);
-}
-
-static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data,
-					 struct sk_buff *pkt)
-{
-	u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
-	struct brcmf_ampdu_rx_reorder *rfi;
-	struct sk_buff_head reorder_list;
-	struct sk_buff *pnext;
-	u8 flags;
-	u32 buf_size;
-
-	flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
-	flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
-
-	/* validate flags and flow id */
-	if (flags == 0xFF) {
-		brcmf_err("invalid flags...so ignore this packet\n");
-		brcmf_netif_rx(ifp, pkt, false);
-		return;
-	}
-
-	rfi = ifp->drvr->reorder_flows[flow_id];
-	if (flags & BRCMF_RXREORDER_DEL_FLOW) {
-		brcmf_dbg(INFO, "flow-%d: delete\n",
-			  flow_id);
-
-		if (rfi == NULL) {
-			brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
-				  flow_id);
-			brcmf_netif_rx(ifp, pkt, false);
-			return;
-		}
-
-		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
-					     &reorder_list);
-		/* add the last packet */
-		__skb_queue_tail(&reorder_list, pkt);
-		kfree(rfi);
-		ifp->drvr->reorder_flows[flow_id] = NULL;
-		goto netif_rx;
-	}
-	/* from here on we need a flow reorder instance */
-	if (rfi == NULL) {
-		buf_size = sizeof(*rfi);
-		max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
-
-		buf_size += (max_idx + 1) * sizeof(pkt);
-
-		/* allocate space for flow reorder info */
-		brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
-			  flow_id, max_idx);
-		rfi = kzalloc(buf_size, GFP_ATOMIC);
-		if (rfi == NULL) {
-			brcmf_err("failed to alloc buffer\n");
-			brcmf_netif_rx(ifp, pkt, false);
-			return;
-		}
-
-		ifp->drvr->reorder_flows[flow_id] = rfi;
-		rfi->pktslots = (struct sk_buff **)(rfi+1);
-		rfi->max_idx = max_idx;
-	}
-	if (flags & BRCMF_RXREORDER_NEW_HOLE)  {
-		if (rfi->pend_pkts) {
-			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
-						     rfi->exp_idx,
-						     &reorder_list);
-			WARN_ON(rfi->pend_pkts);
-		} else {
-			__skb_queue_head_init(&reorder_list);
-		}
-		rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
-		rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
-		rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
-		rfi->pktslots[rfi->cur_idx] = pkt;
-		rfi->pend_pkts++;
-		brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
-			  flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
-	} else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
-		cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
-		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
-
-		if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
-			/* still in the current hole */
-			/* enqueue the current on the buffer chain */
-			if (rfi->pktslots[cur_idx] != NULL) {
-				brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
-				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
-				rfi->pktslots[cur_idx] = NULL;
-			}
-			rfi->pktslots[cur_idx] = pkt;
-			rfi->pend_pkts++;
-			rfi->cur_idx = cur_idx;
-			brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
-				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);
-
-			/* can return now as there is no reorder
-			 * list to process.
-			 */
-			return;
-		}
-		if (rfi->exp_idx == cur_idx) {
-			if (rfi->pktslots[cur_idx] != NULL) {
-				brcmf_dbg(INFO, "error buffer pending..free it\n");
-				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
-				rfi->pktslots[cur_idx] = NULL;
-			}
-			rfi->pktslots[cur_idx] = pkt;
-			rfi->pend_pkts++;
-
-			/* got the expected one. flush from current to expected
-			 * and update expected
-			 */
-			brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
-				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);
-
-			rfi->cur_idx = cur_idx;
-			rfi->exp_idx = exp_idx;
-
-			brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
-						     &reorder_list);
-			brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
-				  flow_id, skb_queue_len(&reorder_list),
-				  rfi->pend_pkts);
-		} else {
-			u8 end_idx;
-
-			brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
-				  flow_id, flags, rfi->cur_idx, rfi->exp_idx,
-				  cur_idx, exp_idx);
-			if (flags & BRCMF_RXREORDER_FLUSH_ALL)
-				end_idx = rfi->exp_idx;
-			else
-				end_idx = exp_idx;
-
-			/* flush pkts first */
-			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
-						     &reorder_list);
-
-			if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
-				__skb_queue_tail(&reorder_list, pkt);
-			} else {
-				rfi->pktslots[cur_idx] = pkt;
-				rfi->pend_pkts++;
-			}
-			rfi->exp_idx = exp_idx;
-			rfi->cur_idx = cur_idx;
-		}
-	} else {
-		/* explicity window move updating the expected index */
-		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
-
-		brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
-			  flow_id, flags, rfi->exp_idx, exp_idx);
-		if (flags & BRCMF_RXREORDER_FLUSH_ALL)
-			end_idx =  rfi->exp_idx;
-		else
-			end_idx =  exp_idx;
-
-		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
-					     &reorder_list);
-		__skb_queue_tail(&reorder_list, pkt);
-		/* set the new expected idx */
-		rfi->exp_idx = exp_idx;
-	}
-netif_rx:
-	skb_queue_walk_safe(&reorder_list, pkt, pnext) {
-		__skb_unlink(pkt, &reorder_list);
-		brcmf_netif_rx(ifp, pkt, false);
-	}
-}
-
 void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_evnt)
 {
 	struct brcmf_if *ifp;
 	struct brcmf_bus *bus_if = dev_get_drvdata(dev);
 	struct brcmf_pub *drvr = bus_if->drvr;
-	struct brcmf_skb_reorder_data *rd;
 	int ret;
 
 	brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb);
@@ -557,9 +348,8 @@ void brcmf_rx_frame(struct device *dev, struct sk_buff *skb, bool handle_evnt)
 		return;
 	}
 
-	rd = (struct brcmf_skb_reorder_data *)skb->cb;
+	if (brcmf_proto_is_reorder_skb(skb))
-	if (rd->reorder)
+		brcmf_proto_rxreorder(ifp, skb);
-		brcmf_rxreorder_process_info(ifp, rd->reorder, skb);
 	else
 		brcmf_netif_rx(ifp, skb, handle_evnt);
 }

drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h

@@ -208,10 +208,6 @@ struct brcmf_if {
 	u8 ipv6addr_idx;
 };
 
-struct brcmf_skb_reorder_data {
-	u8 *reorder;
-};
-
 int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp);
 
 /* Return pointer to interface name */

drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c

@@ -92,6 +92,19 @@ enum brcmf_fws_tlv_len {
 };
 #undef BRCMF_FWS_TLV_DEF
 
+/* AMPDU rx reordering definitions */
+#define BRCMF_RXREORDER_FLOWID_OFFSET		0
+#define BRCMF_RXREORDER_MAXIDX_OFFSET		2
+#define BRCMF_RXREORDER_FLAGS_OFFSET		4
+#define BRCMF_RXREORDER_CURIDX_OFFSET		6
+#define BRCMF_RXREORDER_EXPIDX_OFFSET		8
+
+#define BRCMF_RXREORDER_DEL_FLOW		0x01
+#define BRCMF_RXREORDER_FLUSH_ALL		0x02
+#define BRCMF_RXREORDER_CURIDX_VALID		0x04
+#define BRCMF_RXREORDER_EXPIDX_VALID		0x08
+#define BRCMF_RXREORDER_NEW_HOLE		0x10
+
 #ifdef DEBUG
 /*
  * brcmf_fws_tlv_names - array of tlv names.
@@ -1614,6 +1627,202 @@ static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp,
 	return 0;
 }
 
+static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi,
+					 u8 start, u8 end,
+					 struct sk_buff_head *skb_list)
+{
+	/* initialize return list */
+	__skb_queue_head_init(skb_list);
+
+	if (rfi->pend_pkts == 0) {
+		brcmf_dbg(INFO, "no packets in reorder queue\n");
+		return;
+	}
+
+	do {
+		if (rfi->pktslots[start]) {
+			__skb_queue_tail(skb_list, rfi->pktslots[start]);
+			rfi->pktslots[start] = NULL;
+		}
+		start++;
+		if (start > rfi->max_idx)
+			start = 0;
+	} while (start != end);
+	rfi->pend_pkts -= skb_queue_len(skb_list);
+}
+
+void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *pkt)
+{
+	u8 *reorder_data;
+	u8 flow_id, max_idx, cur_idx, exp_idx, end_idx;
+	struct brcmf_ampdu_rx_reorder *rfi;
+	struct sk_buff_head reorder_list;
+	struct sk_buff *pnext;
+	u8 flags;
+	u32 buf_size;
+
+	reorder_data = ((struct brcmf_skb_reorder_data *)pkt->cb)->reorder;
+	flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET];
+	flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET];
+
+	/* validate flags and flow id */
+	if (flags == 0xFF) {
+		brcmf_err("invalid flags...so ignore this packet\n");
+		brcmf_netif_rx(ifp, pkt, false);
+		return;
+	}
+
+	rfi = ifp->drvr->reorder_flows[flow_id];
+	if (flags & BRCMF_RXREORDER_DEL_FLOW) {
+		brcmf_dbg(INFO, "flow-%d: delete\n",
+			  flow_id);
+
+		if (rfi == NULL) {
+			brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n",
+				  flow_id);
+			brcmf_netif_rx(ifp, pkt, false);
+			return;
+		}
+
+		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx,
+					     &reorder_list);
+		/* add the last packet */
+		__skb_queue_tail(&reorder_list, pkt);
+		kfree(rfi);
+		ifp->drvr->reorder_flows[flow_id] = NULL;
+		goto netif_rx;
+	}
+	/* from here on we need a flow reorder instance */
+	if (rfi == NULL) {
+		buf_size = sizeof(*rfi);
+		max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
+
+		buf_size += (max_idx + 1) * sizeof(pkt);
+
+		/* allocate space for flow reorder info */
+		brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n",
+			  flow_id, max_idx);
+		rfi = kzalloc(buf_size, GFP_ATOMIC);
+		if (rfi == NULL) {
+			brcmf_err("failed to alloc buffer\n");
+			brcmf_netif_rx(ifp, pkt, false);
+			return;
+		}
+
+		ifp->drvr->reorder_flows[flow_id] = rfi;
+		rfi->pktslots = (struct sk_buff **)(rfi + 1);
+		rfi->max_idx = max_idx;
+	}
+	if (flags & BRCMF_RXREORDER_NEW_HOLE)  {
+		if (rfi->pend_pkts) {
+			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx,
+						     rfi->exp_idx,
+						     &reorder_list);
+			WARN_ON(rfi->pend_pkts);
+		} else {
+			__skb_queue_head_init(&reorder_list);
+		}
+		rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
+		rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
+		rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET];
+		rfi->pktslots[rfi->cur_idx] = pkt;
+		rfi->pend_pkts++;
+		brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n",
+			  flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts);
+	} else if (flags & BRCMF_RXREORDER_CURIDX_VALID) {
+		cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET];
+		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
+
+		if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) {
+			/* still in the current hole */
+			/* enqueue the current on the buffer chain */
+			if (rfi->pktslots[cur_idx] != NULL) {
+				brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n");
+				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
+				rfi->pktslots[cur_idx] = NULL;
+			}
+			rfi->pktslots[cur_idx] = pkt;
+			rfi->pend_pkts++;
+			rfi->cur_idx = cur_idx;
+			brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n",
+				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);
+
+			/* can return now as there is no reorder
+			 * list to process.
+			 */
+			return;
+		}
+		if (rfi->exp_idx == cur_idx) {
+			if (rfi->pktslots[cur_idx] != NULL) {
+				brcmf_dbg(INFO, "error buffer pending..free it\n");
+				brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]);
+				rfi->pktslots[cur_idx] = NULL;
+			}
+			rfi->pktslots[cur_idx] = pkt;
+			rfi->pend_pkts++;
+
+			/* got the expected one. flush from current to expected
+			 * and update expected
+			 */
+			brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n",
+				  flow_id, cur_idx, exp_idx, rfi->pend_pkts);
+
+			rfi->cur_idx = cur_idx;
+			rfi->exp_idx = exp_idx;
+
+			brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx,
+						     &reorder_list);
+			brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n",
+				  flow_id, skb_queue_len(&reorder_list),
+				  rfi->pend_pkts);
+		} else {
+			u8 end_idx;
+
+			brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n",
+				  flow_id, flags, rfi->cur_idx, rfi->exp_idx,
+				  cur_idx, exp_idx);
+			if (flags & BRCMF_RXREORDER_FLUSH_ALL)
+				end_idx = rfi->exp_idx;
+			else
+				end_idx = exp_idx;
+
+			/* flush pkts first */
+			brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
+						     &reorder_list);
+
+			if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) {
+				__skb_queue_tail(&reorder_list, pkt);
+			} else {
+				rfi->pktslots[cur_idx] = pkt;
+				rfi->pend_pkts++;
+			}
+			rfi->exp_idx = exp_idx;
+			rfi->cur_idx = cur_idx;
+		}
+	} else {
+		/* explicity window move updating the expected index */
+		exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET];
+
+		brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n",
+			  flow_id, flags, rfi->exp_idx, exp_idx);
+		if (flags & BRCMF_RXREORDER_FLUSH_ALL)
+			end_idx =  rfi->exp_idx;
+		else
+			end_idx =  exp_idx;
+
+		brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx,
+					     &reorder_list);
+		__skb_queue_tail(&reorder_list, pkt);
+		/* set the new expected idx */
+		rfi->exp_idx = exp_idx;
+	}
+netif_rx:
+	skb_queue_walk_safe(&reorder_list, pkt, pnext) {
+		__skb_unlink(pkt, &reorder_list);
+		brcmf_netif_rx(ifp, pkt, false);
+	}
+}
+
 void brcmf_fws_hdrpull(struct brcmf_if *ifp, s16 siglen, struct sk_buff *skb)
 {
 	struct brcmf_skb_reorder_data *rd;

drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.h

@@ -29,5 +29,6 @@ void brcmf_fws_add_interface(struct brcmf_if *ifp);
 void brcmf_fws_del_interface(struct brcmf_if *ifp);
 void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb);
 void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked);
+void brcmf_fws_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb);
 
 #endif /* FWSIGNAL_H_ */

drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c

@@ -527,6 +527,9 @@ static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
 	return -ENODEV;
 }
 
+static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
+{
+}
 
 static void
 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
@@ -1466,6 +1469,7 @@ int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
 	drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
 	drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
 	drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
+	drvr->proto->rxreorder = brcmf_msgbuf_rxreorder;
 	drvr->proto->pd = msgbuf;
 
 	init_waitqueue_head(&msgbuf->ioctl_resp_wait);

drivers/net/wireless/broadcom/brcm80211/brcmfmac/proto.h

@@ -22,6 +22,9 @@ enum proto_addr_mode {
 	ADDR_DIRECT
 };
 
+struct brcmf_skb_reorder_data {
+	u8 *reorder;
+};
 
 struct brcmf_proto {
 	int (*hdrpull)(struct brcmf_pub *drvr, bool do_fws,
@@ -38,6 +41,7 @@ struct brcmf_proto {
 			    u8 peer[ETH_ALEN]);
 	void (*add_tdls_peer)(struct brcmf_pub *drvr, int ifidx,
 			      u8 peer[ETH_ALEN]);
+	void (*rxreorder)(struct brcmf_if *ifp, struct sk_buff *skb);
 	void *pd;
 };
 
@@ -91,6 +95,18 @@ brcmf_proto_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
 {
 	drvr->proto->add_tdls_peer(drvr, ifidx, peer);
 }
+static inline bool brcmf_proto_is_reorder_skb(struct sk_buff *skb)
+{
+	struct brcmf_skb_reorder_data *rd;
 
+	rd = (struct brcmf_skb_reorder_data *)skb->cb;
+	return !!rd->reorder;
+}
+
+static inline void
+brcmf_proto_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
+{
+	ifp->drvr->proto->rxreorder(ifp, skb);
+}
 
 #endif /* BRCMFMAC_PROTO_H */