brcmfmac: hookup firmware signalling to firmware interface events
authorArend van Spriel <arend@broadcom.com>
Wed, 3 Apr 2013 10:40:30 +0000 (12:40 +0200)
committerJohn W. Linville <linville@tuxdriver.com>
Wed, 3 Apr 2013 19:07:04 +0000 (15:07 -0400)
Firmware signalling needs to handle resources upon interface
events. This patch add calls in the interface event handling
routine.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/net/wireless/brcm80211/brcmfmac/dhd.h
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
drivers/net/wireless/brcm80211/brcmfmac/fweh.c
drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h

index b4b9700..64006ed 100644 (file)
@@ -550,8 +550,9 @@ struct brcmf_if_event {
        u8 bssidx;
 };
 
-/* forward declaration */
+/* forward declarations */
 struct brcmf_cfg80211_vif;
+struct brcmf_fws_mac_descriptor;
 
 /**
  * struct brcmf_if - interface control information.
@@ -560,6 +561,9 @@ struct brcmf_cfg80211_vif;
  * @vif: points to cfg80211 specific interface information.
  * @ndev: associated network device.
  * @stats: interface specific network statistics.
+ * @setmacaddr_work: worker object for setting mac address.
+ * @multicast_work: worker object for multicast provisioning.
+ * @fws_desc: interface specific firmware-signalling descriptor.
  * @ifidx: interface index in device firmware.
  * @bssidx: index of bss associated with this interface.
  * @mac_addr: assigned mac address.
@@ -573,6 +577,7 @@ struct brcmf_if {
        struct net_device_stats stats;
        struct work_struct setmacaddr_work;
        struct work_struct multicast_work;
+       struct brcmf_fws_mac_descriptor *fws_desc;
        int ifidx;
        s32 bssidx;
        u8 mac_addr[ETH_ALEN];
index fa5a2af..a08db02 100644 (file)
@@ -755,7 +755,6 @@ struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx,
        ifp->ifidx = ifidx;
        ifp->bssidx = bssidx;
 
-
        init_waitqueue_head(&ifp->pend_8021x_wait);
 
        if (mac_addr != NULL)
@@ -882,6 +881,7 @@ int brcmf_bus_start(struct device *dev)
 
        drvr->fw_signals = true;
        (void)brcmf_fws_init(drvr);
+       brcmf_fws_add_interface(ifp);
 
        drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev);
        if (drvr->config == NULL) {
@@ -899,8 +899,10 @@ fail:
                brcmf_err("failed: %d\n", ret);
                if (drvr->config)
                        brcmf_cfg80211_detach(drvr->config);
-               if (drvr->fws)
+               if (drvr->fws) {
+                       brcmf_fws_del_interface(ifp);
                        brcmf_fws_deinit(drvr);
+               }
                free_netdev(ifp->ndev);
                drvr->iflist[0] = NULL;
                if (p2p_ifp) {
@@ -956,8 +958,10 @@ void brcmf_detach(struct device *dev)
 
        /* make sure primary interface removed last */
        for (i = BRCMF_MAX_IFS-1; i > -1; i--)
-               if (drvr->iflist[i])
+               if (drvr->iflist[i]) {
+                       brcmf_fws_del_interface(drvr->iflist[i]);
                        brcmf_del_if(drvr, i);
+               }
 
        brcmf_bus_detach(drvr);
 
index e9d6f91..dad9414 100644 (file)
@@ -20,6 +20,7 @@
 
 #include "dhd.h"
 #include "dhd_dbg.h"
+#include "fwsignal.h"
 #include "fweh.h"
 #include "fwil.h"
 
@@ -198,15 +199,20 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr,
                                   emsg->ifname, emsg->addr);
                if (IS_ERR(ifp))
                        return;
-
+               brcmf_fws_add_interface(ifp);
                if (!drvr->fweh.evt_handler[BRCMF_E_IF])
                        err = brcmf_net_attach(ifp, false);
        }
 
+       if (ifevent->action == BRCMF_E_IF_CHANGE)
+               brcmf_fws_reset_interface(ifp);
+
        err = brcmf_fweh_call_event_handler(ifp, emsg->event_code, emsg, data);
 
-       if (ifevent->action == BRCMF_E_IF_DEL)
+       if (ifevent->action == BRCMF_E_IF_DEL) {
+               brcmf_fws_del_interface(ifp);
                brcmf_del_if(drvr, ifevent->bssidx);
+       }
 }
 
 /**
index 071d55f..7ceaceb 100644 (file)
@@ -73,16 +73,6 @@ enum brcmf_fws_tlv_type {
 };
 #undef BRCMF_FWS_TLV_DEF
 
-/**
- * enum brcmf_fws_tlv_len - length values for tlvs.
- */
-#define BRCMF_FWS_TLV_DEF(name, id, len) \
-       BRCMF_FWS_TYPE_ ## name ## _LEN = len,
-enum brcmf_fws_tlv_len {
-       BRCMF_FWS_TLV_DEFLIST
-};
-#undef BRCMF_FWS_TLV_DEF
-
 #ifdef DEBUG
 /**
  * brcmf_fws_tlv_names - array of tlv names.
@@ -117,33 +107,57 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
 /**
  * flags used to enable tlv signalling from firmware.
  */
-#define BRCMF_FWS_FLAGS_RSSI_SIGNALS                           0x0001
-#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS                                0x0002
-#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS                  0x0004
-#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE               0x0008
-#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE               0x0010
-#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE                 0x0020
-#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE                  0x0040
-
-#define BRCMF_FWS_HANGER_MAXITEMS                              1024
-#define BRCMF_FWS_HANGER_ITEM_STATE_FREE                       1
-#define BRCMF_FWS_HANGER_ITEM_STATE_INUSE                      2
-#define BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED           3
-
-#define BRCMF_FWS_STATE_OPEN                                   1
+#define BRCMF_FWS_FLAGS_RSSI_SIGNALS                   0x0001
+#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS                        0x0002
+#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS          0x0004
+#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE       0x0008
+#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE       0x0010
+#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE         0x0020
+#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE          0x0040
+
+#define BRCMF_FWS_HANGER_MAXITEMS                      1024
+#define BRCMF_FWS_HANGER_ITEM_STATE_FREE               1
+#define BRCMF_FWS_HANGER_ITEM_STATE_INUSE              2
+#define BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED   3
+
+#define BRCMF_FWS_STATE_OPEN                           1
 #define BRCMF_FWS_STATE_CLOSE                          2
 
 #define BRCMF_FWS_FCMODE_NONE                          0
 #define BRCMF_FWS_FCMODE_IMPLIED_CREDIT                        1
-#define BRCMF_FWS_FCMODE_EXPLICIT_CREDIT                       2
+#define BRCMF_FWS_FCMODE_EXPLICIT_CREDIT               2
 
 #define BRCMF_FWS_MAC_DESC_TABLE_SIZE                  32
-#define BRCMF_FWS_MAX_IFNUM                                    16
+#define BRCMF_FWS_MAX_IFNUM                            16
 #define BRCMF_FWS_MAC_DESC_ID_INVALID                  0xff
 
 #define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF                 0
 #define BRCMF_FWS_HOSTIF_FLOWSTATE_ON                  1
 
+#define BRCMF_FWS_PSQ_PREC_COUNT               ((NL80211_NUM_ACS + 1) * 2)
+#define BRCMF_FWS_PSQ_LEN                              256
+
+/**
+ * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface
+ *
+ * @occupied: slot is in use.
+ * @interface_id: interface index.
+ * @state: current state.
+ * @ac_bitmap: ac queue bitmap.
+ * @requested_credit: credits requested by firmware.
+ * @ea: ethernet address.
+ * @psq: power-save queue.
+ */
+struct brcmf_fws_mac_descriptor {
+       u8 occupied;
+       u8 interface_id;
+       u8 state;
+       u8 ac_bitmap;
+       u8 requested_credit;
+       u8 ea[ETH_ALEN];
+       struct pktq psq;
+};
+
 /**
  * FWFC packet identifier
  *
@@ -182,6 +196,27 @@ struct brcmf_fws_info {
        struct brcmf_fws_stats stats;
 };
 
+/**
+ * brcmf_fws_get_tlv_len() - returns defined length for given tlv id.
+ */
+#define BRCMF_FWS_TLV_DEF(name, id, len) \
+       case BRCMF_FWS_TYPE_ ## name: \
+               return len;
+
+static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws,
+                                enum brcmf_fws_tlv_type id)
+{
+       switch (id) {
+       BRCMF_FWS_TLV_DEFLIST
+       default:
+               brcmf_err("invalid tlv id: %d\n", id);
+               fws->stats.tlv_invalid_type++;
+               break;
+       }
+       return -EINVAL;
+}
+#undef BRCMF_FWS_TLV_DEF
+
 static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi)
 {
        brcmf_dbg(CTL, "rssi %d\n", rssi);
@@ -308,53 +343,33 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
                if (data_len < len + 2)
                        break;
 
+               if (len != brcmf_fws_get_tlv_len(fws, type))
+                       break;
+
                brcmf_dbg(INFO, "tlv type=%d (%s), len=%d\n", type,
                          brcmf_fws_get_tlv_name(type), len);
                switch (type) {
                case BRCMF_FWS_TYPE_MAC_OPEN:
                case BRCMF_FWS_TYPE_MAC_CLOSE:
-                       WARN_ON(len != BRCMF_FWS_TYPE_MAC_OPEN_LEN);
-                       break;
                case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:
-                       WARN_ON(len != BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT_LEN);
-                       break;
                case BRCMF_FWS_TYPE_TXSTATUS:
-                       WARN_ON(len != BRCMF_FWS_TYPE_TXSTATUS_LEN);
-                       break;
                case BRCMF_FWS_TYPE_PKTTAG:
-                       WARN_ON(len != BRCMF_FWS_TYPE_PKTTAG_LEN);
-                       break;
-               case BRCMF_FWS_TYPE_MACDESC_ADD:
-               case BRCMF_FWS_TYPE_MACDESC_DEL:
-                       WARN_ON(len != BRCMF_FWS_TYPE_MACDESC_ADD_LEN);
-                       break;
-               case BRCMF_FWS_TYPE_RSSI:
-                       WARN_ON(len != BRCMF_FWS_TYPE_RSSI_LEN);
-                       brcmf_fws_rssi_indicate(fws, *(s8 *)data);
-                       break;
                case BRCMF_FWS_TYPE_INTERFACE_OPEN:
                case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
-                       WARN_ON(len != BRCMF_FWS_TYPE_INTERFACE_OPEN_LEN);
-                       break;
                case BRCMF_FWS_TYPE_FIFO_CREDITBACK:
-                       WARN_ON(len != BRCMF_FWS_TYPE_FIFO_CREDITBACK_LEN);
-                       break;
                case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP:
-                       WARN_ON(len != BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN);
-                       break;
                case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET:
-                       WARN_ON(len != BRCMF_FWS_TYPE_MAC_REQUEST_PACKET_LEN);
-                       break;
                case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS:
-                       WARN_ON(len != BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS_LEN);
+               case BRCMF_FWS_TYPE_COMP_TXSTATUS:
+               case BRCMF_FWS_TYPE_MACDESC_ADD:
+               case BRCMF_FWS_TYPE_MACDESC_DEL:
+                       break;
+               case BRCMF_FWS_TYPE_RSSI:
+                       brcmf_fws_rssi_indicate(fws, *data);
                        break;
                case BRCMF_FWS_TYPE_TRANS_ID:
-                       WARN_ON(len != BRCMF_FWS_TYPE_TRANS_ID_LEN);
                        brcmf_fws_dbg_seqnum_check(fws, data);
                        break;
-               case BRCMF_FWS_TYPE_COMP_TXSTATUS:
-                       WARN_ON(len != BRCMF_FWS_TYPE_COMP_TXSTATUS_LEN);
-                       break;
                default:
                        fws->stats.tlv_invalid_type++;
                        break;
@@ -380,3 +395,55 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
        brcmf_fws_unlock(drvr, flags);
        return 0;
 }
+
+void brcmf_fws_reset_interface(struct brcmf_if *ifp)
+{
+       struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
+
+       brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx);
+       if (!entry)
+               return;
+
+       entry->occupied = 1;
+       entry->state = BRCMF_FWS_STATE_OPEN;
+       entry->requested_credit = 0;
+       /* depending on use may need ifp->bssidx instead */
+       entry->interface_id = ifp->ifidx;
+       entry->ac_bitmap = 0xff; /* update this when handling APSD */
+       memcpy(&entry->ea[0], ifp->mac_addr, ETH_ALEN);
+}
+
+void brcmf_fws_add_interface(struct brcmf_if *ifp)
+{
+       struct brcmf_fws_mac_descriptor *entry;
+
+       brcmf_dbg(TRACE, "enter: idx=%d, mac=%pM\n",
+                 ifp->bssidx, ifp->mac_addr);
+       if (!ifp->drvr->fw_signals)
+               return;
+
+       entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
+       if (entry) {
+               ifp->fws_desc = entry;
+               brcmf_fws_reset_interface(ifp);
+               brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
+                               BRCMF_FWS_PSQ_LEN);
+       } else {
+               brcmf_err("no firmware signalling\n");
+       }
+}
+
+void brcmf_fws_del_interface(struct brcmf_if *ifp)
+{
+       struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
+
+       brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx);
+       if (!entry)
+               return;
+
+       ifp->fws_desc = NULL;
+       entry->occupied = 0;
+       entry->state = BRCMF_FWS_STATE_CLOSE;
+       entry->requested_credit = 0;
+       kfree(entry);
+}
index e728eea..38a75e4 100644 (file)
@@ -22,4 +22,9 @@ int brcmf_fws_init(struct brcmf_pub *drvr);
 void brcmf_fws_deinit(struct brcmf_pub *drvr);
 int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
                      struct sk_buff *skb);
+
+void brcmf_fws_reset_interface(struct brcmf_if *ifp);
+void brcmf_fws_add_interface(struct brcmf_if *ifp);
+void brcmf_fws_del_interface(struct brcmf_if *ifp);
+
 #endif /* FWSIGNAL_H_ */