brcmfmac: enable tx status signalling

Enabling the tx status signalling, which requires packet tagging
before sending to the firmware and handling the tx status signal.
Reviewed-by: NPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Reviewed-by: NPiotr Haber <phaber@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c

@@ -138,16 +138,34 @@ ssize_t brcmf_debugfs_fws_stats_read(struct file *f, char __user *data,
 		return 0;
 
 	res = scnprintf(buf, sizeof(buf),
-			"header_pulls:     %u\n"
-			"header_only_pkt:  %u\n"
-			"tlv_parse_failed: %u\n"
-			"tlv_invalid_type: %u\n"
-			"mac_update_fails: %u\n",
+			"header_pulls:      %u\n"
+			"header_only_pkt:   %u\n"
+			"tlv_parse_failed:  %u\n"
+			"tlv_invalid_type:  %u\n"
+			"mac_update_fails:  %u\n"
+			"pkt2bus:           %u\n"
+			"generic_error:     %u\n"
+			"txs_indicate:      %u\n"
+			"txs_discard:       %u\n"
+			"txs_suppr_core:    %u\n"
+			"txs_suppr_ps:      %u\n"
+			"txs_tossed:        %u\n"
+			"send_pkts:         BK:%u BE:%u VO:%u VI:%u BCMC:%u\n",
 			fwstats->header_pulls,
 			fwstats->header_only_pkt,
 			fwstats->tlv_parse_failed,
 			fwstats->tlv_invalid_type,
-			fwstats->mac_update_failed);
+			fwstats->mac_update_failed,
+			fwstats->pkt2bus,
+			fwstats->generic_error,
+			fwstats->txs_indicate,
+			fwstats->txs_discard,
+			fwstats->txs_supp_core,
+			fwstats->txs_supp_ps,
+			fwstats->txs_tossed,
+			fwstats->send_pkts[0], fwstats->send_pkts[1],
+			fwstats->send_pkts[2], fwstats->send_pkts[3],
+			fwstats->send_pkts[4]);
 
 	return simple_read_from_buffer(data, count, ppos, buf, res);
 }

drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h

@@ -137,7 +137,15 @@ struct brcmf_fws_stats {
 	u32 tlv_invalid_type;
 	u32 header_only_pkt;
 	u32 header_pulls;
+	u32 pkt2bus;
+	u32 send_pkts[5];
+	u32 generic_error;
 	u32 mac_update_failed;
+	u32 txs_indicate;
+	u32 txs_discard;
+	u32 txs_supp_core;
+	u32 txs_supp_ps;
+	u32 txs_tossed;
 };
 
 struct brcmf_pub;

drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c

@@ -223,18 +223,7 @@ static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb,
 		goto done;
 	}
 
-	/* handle ethernet header */
-	eh = (struct ethhdr *)(skb->data);
-	if (is_multicast_ether_addr(eh->h_dest))
-		drvr->tx_multicast++;
-	if (ntohs(eh->h_proto) == ETH_P_PAE)
-		atomic_inc(&ifp->pend_8021x_cnt);
-
-	/* If the protocol uses a data header, apply it */
-	brcmf_proto_hdrpush(drvr, ifp->ifidx, 0, skb);
-
-	/* Use bus module to send data frame */
-	ret =  brcmf_bus_txdata(drvr->bus_if, skb);
+	ret = brcmf_fws_process_skb(ifp, skb);
 
 done:
 	if (ret) {
@@ -376,7 +365,7 @@ void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
 
 	ifp = drvr->iflist[ifidx];
 	if (!ifp)
-		return;
+		goto done;
 
 	if (res == 0) {
 		eh = (struct ethhdr *)(txp->data);
@@ -390,6 +379,8 @@ void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp,
 	}
 	if (!success)
 		ifp->stats.tx_errors++;
+done:
+	brcmu_pkt_buf_free_skb(txp);
 }
 
 void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
@@ -402,7 +393,6 @@ void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
 		return;
 
 	brcmf_txfinalize(drvr, txp, success);
-	brcmu_pkt_buf_free_skb(txp);
 }
 
 static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)

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

@@ -23,6 +23,7 @@ void brcmf_fws_deinit(struct brcmf_pub *drvr);
 bool brcmf_fws_fc_active(struct brcmf_fws_info *fws);
 int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
 		      struct sk_buff *skb);
+int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb);
 
 void brcmf_fws_reset_interface(struct brcmf_if *ifp);
 void brcmf_fws_add_interface(struct brcmf_if *ifp);