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path: root/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
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Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c')
-rw-r--r--drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c943
1 files changed, 444 insertions, 499 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
index 5352dc1fdf3c..f0d9f7f6c83d 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
@@ -22,7 +22,6 @@
#include <linux/etherdevice.h>
#include <linux/err.h>
#include <linux/jiffies.h>
-#include <uapi/linux/nl80211.h>
#include <net/cfg80211.h>
#include <brcmu_utils.h>
@@ -142,7 +141,7 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
#define BRCMF_FWS_FLOWCONTROL_HIWATER 128
#define BRCMF_FWS_FLOWCONTROL_LOWATER 64
-#define BRCMF_FWS_PSQ_PREC_COUNT ((NL80211_NUM_ACS + 1) * 2)
+#define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2)
#define BRCMF_FWS_PSQ_LEN 256
#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01
@@ -157,11 +156,13 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id)
* @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver.
* @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue.
* @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware.
+ * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info.
*/
enum brcmf_fws_skb_state {
BRCMF_FWS_SKBSTATE_NEW,
BRCMF_FWS_SKBSTATE_DELAYED,
- BRCMF_FWS_SKBSTATE_SUPPRESSED
+ BRCMF_FWS_SKBSTATE_SUPPRESSED,
+ BRCMF_FWS_SKBSTATE_TIM
};
/**
@@ -193,9 +194,8 @@ struct brcmf_skbuff_cb {
* b[11] - packet sent upon firmware request.
* b[10] - packet only contains signalling data.
* b[9] - packet is a tx packet.
- * b[8] - packet uses FIFO credit (non-pspoll).
+ * b[8] - packet used requested credit
* b[7] - interface in AP mode.
- * b[6:4] - AC FIFO number.
* b[3:0] - interface index.
*/
#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800
@@ -204,12 +204,10 @@ struct brcmf_skbuff_cb {
#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10
#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200
#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9
-#define BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK 0x0100
-#define BRCMF_SKB_IF_FLAGS_CREDITCHECK_SHIFT 8
+#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100
+#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8
#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080
#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7
-#define BRCMF_SKB_IF_FLAGS_FIFO_MASK 0x0070
-#define BRCMF_SKB_IF_FLAGS_FIFO_SHIFT 4
#define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f
#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0
@@ -246,7 +244,7 @@ struct brcmf_skbuff_cb {
#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00
#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8
#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff
-#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
+#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0
#define brcmf_skb_htod_tag_set_field(skb, field, value) \
brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
@@ -278,6 +276,7 @@ struct brcmf_skbuff_cb {
/**
* enum brcmf_fws_fifo - fifo indices used by dongle firmware.
*
+ * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background.
* @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic.
* @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic.
* @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic.
@@ -287,7 +286,8 @@ struct brcmf_skbuff_cb {
* @BRCMF_FWS_FIFO_COUNT: number of fifos.
*/
enum brcmf_fws_fifo {
- BRCMF_FWS_FIFO_AC_BK,
+ BRCMF_FWS_FIFO_FIRST,
+ BRCMF_FWS_FIFO_AC_BK = BRCMF_FWS_FIFO_FIRST,
BRCMF_FWS_FIFO_AC_BE,
BRCMF_FWS_FIFO_AC_VI,
BRCMF_FWS_FIFO_AC_VO,
@@ -307,12 +307,15 @@ enum brcmf_fws_fifo {
* firmware suppress the packet as device is already in PS mode.
* @BRCMF_FWS_TXSTATUS_FW_TOSSED:
* firmware tossed the packet.
+ * @BRCMF_FWS_TXSTATUS_HOST_TOSSED:
+ * host tossed the packet.
*/
enum brcmf_fws_txstatus {
BRCMF_FWS_TXSTATUS_DISCARD,
BRCMF_FWS_TXSTATUS_CORE_SUPPRESS,
BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS,
- BRCMF_FWS_TXSTATUS_FW_TOSSED
+ BRCMF_FWS_TXSTATUS_FW_TOSSED,
+ BRCMF_FWS_TXSTATUS_HOST_TOSSED
};
enum brcmf_fws_fcmode {
@@ -343,6 +346,7 @@ enum brcmf_fws_mac_desc_state {
* @transit_count: packet in transit to firmware.
*/
struct brcmf_fws_mac_descriptor {
+ char name[16];
u8 occupied;
u8 mac_handle;
u8 interface_id;
@@ -356,7 +360,6 @@ struct brcmf_fws_mac_descriptor {
u8 seq[BRCMF_FWS_FIFO_COUNT];
struct pktq psq;
int transit_count;
- int suppress_count;
int suppr_transit_count;
bool send_tim_signal;
u8 traffic_pending_bmp;
@@ -383,12 +386,10 @@ enum brcmf_fws_hanger_item_state {
* struct brcmf_fws_hanger_item - single entry for tx pending packet.
*
* @state: entry is either free or occupied.
- * @gen: generation.
* @pkt: packet itself.
*/
struct brcmf_fws_hanger_item {
enum brcmf_fws_hanger_item_state state;
- u8 gen;
struct sk_buff *pkt;
};
@@ -424,6 +425,7 @@ struct brcmf_fws_info {
struct brcmf_fws_stats stats;
struct brcmf_fws_hanger hanger;
enum brcmf_fws_fcmode fcmode;
+ bool bcmc_credit_check;
struct brcmf_fws_macdesc_table desc;
struct workqueue_struct *fws_wq;
struct work_struct fws_dequeue_work;
@@ -434,6 +436,8 @@ struct brcmf_fws_info {
u32 fifo_credit_map;
u32 fifo_delay_map;
unsigned long borrow_defer_timestamp;
+ bool bus_flow_blocked;
+ bool creditmap_received;
};
/*
@@ -507,7 +511,6 @@ static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger)
{
int i;
- brcmf_dbg(TRACE, "enter\n");
memset(hanger, 0, sizeof(*hanger));
for (i = 0; i < ARRAY_SIZE(hanger->items); i++)
hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
@@ -517,7 +520,6 @@ static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
{
u32 i;
- brcmf_dbg(TRACE, "enter\n");
i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS;
while (i != h->slot_pos) {
@@ -533,14 +535,12 @@ static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h)
h->failed_slotfind++;
i = BRCMF_FWS_HANGER_MAXITEMS;
done:
- brcmf_dbg(TRACE, "exit: %d\n", i);
return i;
}
static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h,
- struct sk_buff *pkt, u32 slot_id)
+ struct sk_buff *pkt, u32 slot_id)
{
- brcmf_dbg(TRACE, "enter\n");
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
@@ -560,7 +560,6 @@ static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
u32 slot_id, struct sk_buff **pktout,
bool remove_item)
{
- brcmf_dbg(TRACE, "enter\n");
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
@@ -574,23 +573,18 @@ static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h,
if (remove_item) {
h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE;
h->items[slot_id].pkt = NULL;
- h->items[slot_id].gen = 0xff;
h->popped++;
}
return 0;
}
static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
- u32 slot_id, u8 gen)
+ u32 slot_id)
{
- brcmf_dbg(TRACE, "enter\n");
-
if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
return -ENOENT;
- h->items[slot_id].gen = gen;
-
- if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_INUSE) {
+ if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
brcmf_err("entry not in use\n");
return -EINVAL;
}
@@ -599,25 +593,6 @@ static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h,
return 0;
}
-static int brcmf_fws_hanger_get_genbit(struct brcmf_fws_hanger *hanger,
- struct sk_buff *pkt, u32 slot_id,
- int *gen)
-{
- brcmf_dbg(TRACE, "enter\n");
- *gen = 0xff;
-
- if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS)
- return -ENOENT;
-
- if (hanger->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) {
- brcmf_err("slot not in use\n");
- return -EINVAL;
- }
-
- *gen = hanger->items[slot_id].gen;
- return 0;
-}
-
static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws,
bool (*fn)(struct sk_buff *, void *),
int ifidx)
@@ -627,7 +602,6 @@ static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws,
int i;
enum brcmf_fws_hanger_item_state s;
- brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
for (i = 0; i < ARRAY_SIZE(h->items); i++) {
s = h->items[i].state;
if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE ||
@@ -644,14 +618,28 @@ static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws,
}
}
-static void brcmf_fws_init_mac_descriptor(struct brcmf_fws_mac_descriptor *desc,
- u8 *addr, u8 ifidx)
+static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws,
+ struct brcmf_fws_mac_descriptor *desc)
+{
+ if (desc == &fws->desc.other)
+ strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name));
+ else if (desc->mac_handle)
+ scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d",
+ desc->mac_handle, desc->interface_id);
+ else
+ scnprintf(desc->name, sizeof(desc->name), "MACIF:%d",
+ desc->interface_id);
+}
+
+static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc,
+ u8 *addr, u8 ifidx)
{
brcmf_dbg(TRACE,
"enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx);
desc->occupied = 1;
desc->state = BRCMF_FWS_STATE_OPEN;
desc->requested_credit = 0;
+ desc->requested_packet = 0;
/* depending on use may need ifp->bssidx instead */
desc->interface_id = ifidx;
desc->ac_bitmap = 0xff; /* update this when handling APSD */
@@ -660,22 +648,22 @@ static void brcmf_fws_init_mac_descriptor(struct brcmf_fws_mac_descriptor *desc,
}
static
-void brcmf_fws_clear_mac_descriptor(struct brcmf_fws_mac_descriptor *desc)
+void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc)
{
brcmf_dbg(TRACE,
"enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id);
desc->occupied = 0;
desc->state = BRCMF_FWS_STATE_CLOSE;
desc->requested_credit = 0;
+ desc->requested_packet = 0;
}
static struct brcmf_fws_mac_descriptor *
-brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info *fws, u8 *ea)
+brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea)
{
struct brcmf_fws_mac_descriptor *entry;
int i;
- brcmf_dbg(TRACE, "enter: ea=%pM\n", ea);
if (ea == NULL)
return ERR_PTR(-EINVAL);
@@ -690,42 +678,33 @@ brcmf_fws_mac_descriptor_lookup(struct brcmf_fws_info *fws, u8 *ea)
}
static struct brcmf_fws_mac_descriptor*
-brcmf_fws_find_mac_desc(struct brcmf_fws_info *fws, struct brcmf_if *ifp,
- u8 *da)
+brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da)
{
struct brcmf_fws_mac_descriptor *entry = &fws->desc.other;
bool multicast;
- enum nl80211_iftype iftype;
-
- brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx);
multicast = is_multicast_ether_addr(da);
- iftype = brcmf_cfg80211_get_iftype(ifp);
- /* Multicast destination and P2P clients get the interface entry.
- * STA gets the interface entry if there is no exact match. For
- * example, TDLS destinations have their own entry.
+ /* Multicast destination, STA and P2P clients get the interface entry.
+ * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations
+ * have their own entry.
*/
- entry = NULL;
- if ((multicast || iftype == NL80211_IFTYPE_STATION ||
- iftype == NL80211_IFTYPE_P2P_CLIENT) && ifp->fws_desc)
+ if (multicast && ifp->fws_desc) {
entry = ifp->fws_desc;
-
- if (entry != NULL && iftype != NL80211_IFTYPE_STATION)
goto done;
+ }
- entry = brcmf_fws_mac_descriptor_lookup(fws, da);
+ entry = brcmf_fws_macdesc_lookup(fws, da);
if (IS_ERR(entry))
- entry = &fws->desc.other;
+ entry = ifp->fws_desc;
done:
- brcmf_dbg(TRACE, "exit: entry=%p\n", entry);
return entry;
}
-static bool brcmf_fws_mac_desc_closed(struct brcmf_fws_info *fws,
- struct brcmf_fws_mac_descriptor *entry,
- int fifo)
+static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws,
+ struct brcmf_fws_mac_descriptor *entry,
+ int fifo)
{
struct brcmf_fws_mac_descriptor *if_entry;
bool closed;
@@ -748,15 +727,11 @@ static bool brcmf_fws_mac_desc_closed(struct brcmf_fws_info *fws,
return closed || !(entry->ac_bitmap & BIT(fifo));
}
-static void brcmf_fws_mac_desc_cleanup(struct brcmf_fws_info *fws,
- struct brcmf_fws_mac_descriptor *entry,
- int ifidx)
+static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws,
+ struct brcmf_fws_mac_descriptor *entry,
+ int ifidx)
{
- brcmf_dbg(TRACE, "enter: entry=(ea=%pM, ifid=%d), ifidx=%d\n",
- entry->ea, entry->interface_id, ifidx);
if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) {
- brcmf_dbg(TRACE, "flush psq: ifidx=%d, qlen=%d\n",
- ifidx, entry->psq.len);
brcmf_fws_psq_flush(fws, &entry->psq, ifidx);
entry->occupied = !!(entry->psq.len);
}
@@ -772,7 +747,6 @@ static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws,
int prec;
u32 hslot;
- brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
txq = brcmf_bus_gettxq(fws->drvr->bus_if);
if (IS_ERR(txq)) {
brcmf_dbg(TRACE, "no txq to clean up\n");
@@ -798,7 +772,6 @@ static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
struct brcmf_fws_mac_descriptor *table;
bool (*matchfn)(struct sk_buff *, void *) = NULL;
- brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
if (fws == NULL)
return;
@@ -808,51 +781,121 @@ static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx)
/* cleanup individual nodes */
table = &fws->desc.nodes[0];
for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++)
- brcmf_fws_mac_desc_cleanup(fws, &table[i], ifidx);
+ brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx);
- brcmf_fws_mac_desc_cleanup(fws, &fws->desc.other, ifidx);
+ brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx);
brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx);
brcmf_fws_hanger_cleanup(fws, matchfn, ifidx);
}
-static void brcmf_fws_tim_update(struct brcmf_fws_info *ctx,
- struct brcmf_fws_mac_descriptor *entry,
- int prec)
+static int brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb)
{
- brcmf_dbg(TRACE, "enter: ea=%pM\n", entry->ea);
- if (entry->state == BRCMF_FWS_STATE_CLOSE) {
- /* check delayedQ and suppressQ in one call using bitmap */
- if (brcmu_pktq_mlen(&entry->psq, 3 << (prec * 2)) == 0)
- entry->traffic_pending_bmp =
- entry->traffic_pending_bmp & ~NBITVAL(prec);
- else
- entry->traffic_pending_bmp =
- entry->traffic_pending_bmp | NBITVAL(prec);
+ struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
+ u8 *wlh;
+ u16 data_offset = 0;
+ u8 fillers;
+ __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod);
+
+ brcmf_dbg(TRACE, "enter: %s, idx=%d pkttag=0x%08X, hslot=%d\n",
+ entry->name, brcmf_skb_if_flags_get_field(skb, INDEX),
+ le32_to_cpu(pkttag), (le32_to_cpu(pkttag) >> 8) & 0xffff);
+ if (entry->send_tim_signal)
+ data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
+
+ /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
+ data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN;
+ fillers = round_up(data_offset, 4) - data_offset;
+ data_offset += fillers;
+
+ skb_push(skb, data_offset);
+ wlh = skb->data;
+
+ wlh[0] = BRCMF_FWS_TYPE_PKTTAG;
+ wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN;
+ memcpy(&wlh[2], &pkttag, sizeof(pkttag));
+ wlh += BRCMF_FWS_TYPE_PKTTAG_LEN + 2;
+
+ if (entry->send_tim_signal) {
+ entry->send_tim_signal = 0;
+ wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP;
+ wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
+ wlh[2] = entry->mac_handle;
+ wlh[3] = entry->traffic_pending_bmp;
+ brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n",
+ entry->mac_handle, entry->traffic_pending_bmp);
+ wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2;
+ entry->traffic_lastreported_bmp = entry->traffic_pending_bmp;
}
- /* request a TIM update to firmware at the next piggyback opportunity */
+ if (fillers)
+ memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers);
+
+ brcmf_proto_hdrpush(fws->drvr, brcmf_skb_if_flags_get_field(skb, INDEX),
+ data_offset >> 2, skb);
+ return 0;
+}
+
+static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws,
+ struct brcmf_fws_mac_descriptor *entry,
+ int fifo, bool send_immediately)
+{
+ struct sk_buff *skb;
+ struct brcmf_bus *bus;
+ struct brcmf_skbuff_cb *skcb;
+ s32 err;
+ u32 len;
+
+ /* check delayedQ and suppressQ in one call using bitmap */
+ if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0)
+ entry->traffic_pending_bmp &= ~NBITVAL(fifo);
+ else
+ entry->traffic_pending_bmp |= NBITVAL(fifo);
+
+ entry->send_tim_signal = false;
if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp)
entry->send_tim_signal = true;
+ if (send_immediately && entry->send_tim_signal &&
+ entry->state == BRCMF_FWS_STATE_CLOSE) {
+ /* create a dummy packet and sent that. The traffic */
+ /* bitmap info will automatically be attached to that packet */
+ len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 +
+ BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 +
+ 4 + fws->drvr->hdrlen;
+ skb = brcmu_pkt_buf_get_skb(len);
+ if (skb == NULL)
+ return false;
+ skb_pull(skb, len);
+ skcb = brcmf_skbcb(skb);
+ skcb->mac = entry;
+ skcb->state = BRCMF_FWS_SKBSTATE_TIM;
+ bus = fws->drvr->bus_if;
+ err = brcmf_fws_hdrpush(fws, skb);
+ if (err == 0)
+ err = brcmf_bus_txdata(bus, skb);
+ if (err)
+ brcmu_pkt_buf_free_skb(skb);
+ return true;
+ }
+ return false;
}
static void
brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq,
u8 if_id)
{
- struct brcmf_if *ifp = fws->drvr->iflist[if_id];
+ struct brcmf_if *ifp = fws->drvr->iflist[!if_id ? 0 : if_id + 1];
if (WARN_ON(!ifp))
return;
- brcmf_dbg(TRACE,
- "enter: bssidx=%d, ifidx=%d\n", ifp->bssidx, ifp->ifidx);
-
if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER)
brcmf_txflowblock_if(ifp,
BRCMF_NETIF_STOP_REASON_FWS_FC, false);
if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
- pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER)
+ pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) {
+ fws->stats.fws_flow_block++;
brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true);
+ }
return;
}
@@ -862,10 +905,26 @@ static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi)
return 0;
}
+/* using macro so sparse checking does not complain
+ * about locking imbalance.
+ */
+#define brcmf_fws_lock(drvr, flags) \
+do { \
+ flags = 0; \
+ spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
+} while (0)
+
+/* using macro so sparse checking does not complain
+ * about locking imbalance.
+ */
+#define brcmf_fws_unlock(drvr, flags) \
+ spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
+
static
int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
{
struct brcmf_fws_mac_descriptor *entry, *existing;
+ ulong flags;
u8 mac_handle;
u8 ifidx;
u8 *addr;
@@ -876,34 +935,44 @@ int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data)
entry = &fws->desc.nodes[mac_handle & 0x1F];
if (type == BRCMF_FWS_TYPE_MACDESC_DEL) {
- brcmf_dbg(TRACE, "deleting mac %pM idx %d\n", addr, ifidx);
if (entry->occupied) {
- brcmf_fws_mac_desc_cleanup(fws, entry, -1);
- brcmf_fws_clear_mac_descriptor(entry);
+ brcmf_dbg(TRACE, "deleting %s mac %pM\n",
+ entry->name, addr);
+ brcmf_fws_lock(fws->drvr, flags);
+ brcmf_fws_macdesc_cleanup(fws, entry, -1);
+ brcmf_fws_macdesc_deinit(entry);
+ brcmf_fws_unlock(fws->drvr, flags);
} else
fws->stats.mac_update_failed++;
return 0;
}
- brcmf_dbg(TRACE,
- "add mac %pM handle %u idx %d\n", addr, mac_handle, ifidx);
- existing = brcmf_fws_mac_descriptor_lookup(fws, addr);
+ existing = brcmf_fws_macdesc_lookup(fws, addr);
if (IS_ERR(existing)) {
if (!entry->occupied) {
+ brcmf_fws_lock(fws->drvr, flags);
entry->mac_handle = mac_handle;
- brcmf_fws_init_mac_descriptor(entry, addr, ifidx);
+ brcmf_fws_macdesc_init(entry, addr, ifidx);
+ brcmf_fws_macdesc_set_name(fws, entry);
brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
BRCMF_FWS_PSQ_LEN);
+ brcmf_fws_unlock(fws->drvr, flags);
+ brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr);
} else {
fws->stats.mac_update_failed++;
}
} else {
if (entry != existing) {
- brcmf_dbg(TRACE, "relocate mac\n");
+ brcmf_dbg(TRACE, "copy mac %s\n", existing->name);
+ brcmf_fws_lock(fws->drvr, flags);
memcpy(entry, existing,
offsetof(struct brcmf_fws_mac_descriptor, psq));
entry->mac_handle = mac_handle;
- brcmf_fws_clear_mac_descriptor(existing);
+ brcmf_fws_macdesc_deinit(existing);
+ brcmf_fws_macdesc_set_name(fws, entry);
+ brcmf_fws_unlock(fws->drvr, flags);
+ brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name,
+ addr);
} else {
brcmf_dbg(TRACE, "use existing\n");
WARN_ON(entry->mac_handle != mac_handle);
@@ -917,8 +986,9 @@ static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws,
u8 type, u8 *data)
{
struct brcmf_fws_mac_descriptor *entry;
+ ulong flags;
u8 mac_handle;
- int i;
+ int ret;
mac_handle = data[0];
entry = &fws->desc.nodes[mac_handle & 0x1F];
@@ -926,30 +996,35 @@ static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws,
fws->stats.mac_ps_update_failed++;
return -ESRCH;
}
-
- /* a state update should wipe old credits? */
+ brcmf_fws_lock(fws->drvr, flags);
+ /* a state update should wipe old credits */
entry->requested_credit = 0;
+ entry->requested_packet = 0;
if (type == BRCMF_FWS_TYPE_MAC_OPEN) {
entry->state = BRCMF_FWS_STATE_OPEN;
- return BRCMF_FWS_RET_OK_SCHEDULE;
+ ret = BRCMF_FWS_RET_OK_SCHEDULE;
} else {
entry->state = BRCMF_FWS_STATE_CLOSE;
- for (i = BRCMF_FWS_FIFO_AC_BE; i < NL80211_NUM_ACS; i++)
- brcmf_fws_tim_update(fws, entry, i);
+ brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false);
+ brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false);
+ brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false);
+ brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true);
+ ret = BRCMF_FWS_RET_OK_NOSCHEDULE;
}
- return BRCMF_FWS_RET_OK_NOSCHEDULE;
+ brcmf_fws_unlock(fws->drvr, flags);
+ return ret;
}
static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws,
u8 type, u8 *data)
{
struct brcmf_fws_mac_descriptor *entry;
+ ulong flags;
u8 ifidx;
int ret;
ifidx = data[0];
- brcmf_dbg(TRACE, "enter: ifidx=%d\n", ifidx);
if (ifidx >= BRCMF_MAX_IFS) {
ret = -ERANGE;
goto fail;
@@ -961,17 +1036,26 @@ static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws,
goto fail;
}
+ brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type,
+ entry->name);
+ brcmf_fws_lock(fws->drvr, flags);
switch (type) {
case BRCMF_FWS_TYPE_INTERFACE_OPEN:
entry->state = BRCMF_FWS_STATE_OPEN;
- return BRCMF_FWS_RET_OK_SCHEDULE;
+ ret = BRCMF_FWS_RET_OK_SCHEDULE;
+ break;
case BRCMF_FWS_TYPE_INTERFACE_CLOSE:
entry->state = BRCMF_FWS_STATE_CLOSE;
- return BRCMF_FWS_RET_OK_NOSCHEDULE;
+ ret = BRCMF_FWS_RET_OK_NOSCHEDULE;
+ break;
default:
ret = -EINVAL;
- break;
+ brcmf_fws_unlock(fws->drvr, flags);
+ goto fail;
}
+ brcmf_fws_unlock(fws->drvr, flags);
+ return ret;
+
fail:
fws->stats.if_update_failed++;
return ret;
@@ -981,6 +1065,7 @@ static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type,
u8 *data)
{
struct brcmf_fws_mac_descriptor *entry;
+ ulong flags;
entry = &fws->desc.nodes[data[1] & 0x1F];
if (!entry->occupied) {
@@ -991,15 +1076,51 @@ static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type,
return -ESRCH;
}
+ brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n",
+ brcmf_fws_get_tlv_name(type), type, entry->name,
+ data[0], data[2]);
+ brcmf_fws_lock(fws->drvr, flags);
if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)
entry->requested_credit = data[0];
else
entry->requested_packet = data[0];
entry->ac_bitmap = data[2];
+ brcmf_fws_unlock(fws->drvr, flags);
return BRCMF_FWS_RET_OK_SCHEDULE;
}
+static void
+brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry,
+ struct sk_buff *skb)
+{
+ if (entry->requested_credit > 0) {
+ entry->requested_credit--;
+ brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
+ brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1);
+ if (entry->state != BRCMF_FWS_STATE_CLOSE)
+ brcmf_err("requested credit set while mac not closed!\n");
+ } else if (entry->requested_packet > 0) {
+ entry->requested_packet--;
+ brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
+ brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0);
+ if (entry->state != BRCMF_FWS_STATE_CLOSE)
+ brcmf_err("requested packet set while mac not closed!\n");
+ } else {
+ brcmf_skb_if_flags_set_field(skb, REQUESTED, 0);
+ brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0);
+ }
+}
+
+static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb)
+{
+ struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
+
+ if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) &&
+ (entry->state == BRCMF_FWS_STATE_CLOSE))
+ entry->requested_credit++;
+}
+
static void brcmf_fws_return_credits(struct brcmf_fws_info *fws,
u8 fifo, u8 credits)
{
@@ -1010,6 +1131,8 @@ static void brcmf_fws_return_credits(struct brcmf_fws_info *fws,
if (!credits)
return;
+ fws->fifo_credit_map |= 1 << fifo;
+
if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
(fws->credits_borrowed[0])) {
for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0;
@@ -1031,7 +1154,6 @@ static void brcmf_fws_return_credits(struct brcmf_fws_info *fws,
}
}
- fws->fifo_credit_map |= 1 << fifo;
fws->fifo_credit[fifo] += credits;
}
@@ -1042,27 +1164,6 @@ static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws)
queue_work(fws->fws_wq, &fws->fws_dequeue_work);
}
-static void brcmf_skb_pick_up_credit(struct brcmf_fws_info *fws, int fifo,
- struct sk_buff *p)
-{
- struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(p)->mac;
-
- if (brcmf_skbcb(p)->if_flags & BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK) {
- if (fws->fcmode != BRCMF_FWS_FCMODE_IMPLIED_CREDIT)
- return;
- brcmf_fws_return_credits(fws, fifo, 1);
- } else {
- /*
- * if this packet did not count against FIFO credit, it
- * must have taken a requested_credit from the destination
- * entry (for pspoll etc.)
- */
- if (!brcmf_skb_if_flags_get_field(p, REQUESTED))
- entry->requested_credit++;
- }
- brcmf_fws_schedule_deq(fws);
-}
-
static int brcmf_fws_enq(struct brcmf_fws_info *fws,
enum brcmf_fws_skb_state state, int fifo,
struct sk_buff *p)
@@ -1078,7 +1179,7 @@ static int brcmf_fws_enq(struct brcmf_fws_info *fws,
return -ENOENT;
}
- brcmf_dbg(TRACE, "enter: ea=%pM, qlen=%d\n", entry->ea, entry->psq.len);
+ brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p);
if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) {
prec += 1;
qfull_stat = &fws->stats.supprq_full_error;
@@ -1095,14 +1196,12 @@ static int brcmf_fws_enq(struct brcmf_fws_info *fws,
/* update the sk_buff state */
brcmf_skbcb(p)->state = state;
- if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED)
- entry->suppress_count++;
/*
* A packet has been pushed so update traffic
* availability bitmap, if applicable
*/
- brcmf_fws_tim_update(fws, entry, fifo);
+ brcmf_fws_tim_update(fws, entry, fifo, true);
brcmf_fws_flow_control_check(fws, &entry->psq,
brcmf_skb_if_flags_get_field(p, INDEX));
return 0;
@@ -1113,7 +1212,6 @@ static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
struct brcmf_fws_mac_descriptor *table;
struct brcmf_fws_mac_descriptor *entry;
struct sk_buff *p;
- int use_credit = 1;
int num_nodes;
int node_pos;
int prec_out;
@@ -1127,7 +1225,7 @@ static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
for (i = 0; i < num_nodes; i++) {
entry = &table[(node_pos + i) % num_nodes];
if (!entry->occupied ||
- brcmf_fws_mac_desc_closed(fws, entry, fifo))
+ brcmf_fws_macdesc_closed(fws, entry, fifo))
continue;
if (entry->suppressed)
@@ -1137,9 +1235,8 @@ static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out);
if (p == NULL) {
if (entry->suppressed) {
- if (entry->suppr_transit_count >
- entry->suppress_count)
- return NULL;
+ if (entry->suppr_transit_count)
+ continue;
entry->suppressed = false;
p = brcmu_pktq_mdeq(&entry->psq,
1 << (fifo * 2), &prec_out);
@@ -1148,26 +1245,7 @@ static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
if (p == NULL)
continue;
- /* did the packet come from suppress sub-queue? */
- if (entry->requested_credit > 0) {
- entry->requested_credit--;
- /*
- * if the packet was pulled out while destination is in
- * closed state but had a non-zero packets requested,
- * then this should not count against the FIFO credit.
- * That is due to the fact that the firmware will
- * most likely hold onto this packet until a suitable
- * time later to push it to the appropriate AC FIFO.
- */
- if (entry->state == BRCMF_FWS_STATE_CLOSE)
- use_credit = 0;
- } else if (entry->requested_packet > 0) {
- entry->requested_packet--;
- brcmf_skb_if_flags_set_field(p, REQUESTED, 1);
- if (entry->state == BRCMF_FWS_STATE_CLOSE)
- use_credit = 0;
- }
- brcmf_skb_if_flags_set_field(p, CREDITCHECK, use_credit);
+ brcmf_fws_macdesc_use_req_credit(entry, p);
/* move dequeue position to ensure fair round-robin */
fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes;
@@ -1179,7 +1257,7 @@ static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
* A packet has been picked up, update traffic
* availability bitmap, if applicable
*/
- brcmf_fws_tim_update(fws, entry, fifo);
+ brcmf_fws_tim_update(fws, entry, fifo, false);
/*
* decrement total enqueued fifo packets and
@@ -1192,7 +1270,7 @@ static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo)
}
p = NULL;
done:
- brcmf_dbg(TRACE, "exit: fifo %d skb %p\n", fifo, p);
+ brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p);
return p;
}
@@ -1202,22 +1280,26 @@ static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo,
struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
u32 hslot;
int ret;
+ u8 ifidx;
hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
/* this packet was suppressed */
- if (!entry->suppressed || entry->generation != genbit) {
+ if (!entry->suppressed) {
entry->suppressed = true;
- entry->suppress_count = brcmu_pktq_mlen(&entry->psq,
- 1 << (fifo * 2 + 1));
entry->suppr_transit_count = entry->transit_count;
+ brcmf_dbg(DATA, "suppress %s: transit %d\n",
+ entry->name, entry->transit_count);
}
entry->generation = genbit;
- ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb);
+ ret = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb);
+ if (ret == 0)
+ ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo,
+ skb);
if (ret != 0) {
- /* suppress q is full, drop this packet */
+ /* suppress q is full or hdrpull failed, drop this packet */
brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb,
true);
} else {
@@ -1225,26 +1307,24 @@ static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo,
* Mark suppressed to avoid a double free during
* wlfc cleanup
*/
- brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot,
- genbit);
- entry->suppress_count++;
+ brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot);
}
return ret;
}
static int
-brcmf_fws_txstatus_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
+brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
u32 genbit)
{
u32 fifo;
int ret;
bool remove_from_hanger = true;
struct sk_buff *skb;
+ struct brcmf_skbuff_cb *skcb;
struct brcmf_fws_mac_descriptor *entry = NULL;
- brcmf_dbg(TRACE, "status: flags=0x%X, hslot=%d\n",
- flags, hslot);
+ brcmf_dbg(DATA, "flags %d\n", flags);
if (flags == BRCMF_FWS_TXSTATUS_DISCARD)
fws->stats.txs_discard++;
@@ -1256,6 +1336,8 @@ brcmf_fws_txstatus_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
remove_from_hanger = false;
} else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED)
fws->stats.txs_tossed++;
+ else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)
+ fws->stats.txs_host_tossed++;
else
brcmf_err("unexpected txstatus\n");
@@ -1266,32 +1348,42 @@ brcmf_fws_txstatus_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot,
return ret;
}
- entry = brcmf_skbcb(skb)->mac;
+ skcb = brcmf_skbcb(skb);
+ entry = skcb->mac;
if (WARN_ON(!entry)) {
brcmu_pkt_buf_free_skb(skb);
return -EINVAL;
}
+ entry->transit_count--;
+ if (entry->suppressed && entry->suppr_transit_count)
+ entry->suppr_transit_count--;
+
+ brcmf_dbg(DATA, "%s flags %X htod %X\n", entry->name, skcb->if_flags,
+ skcb->htod);
/* pick up the implicit credit from this packet */
fifo = brcmf_skb_htod_tag_get_field(skb, FIFO);
- brcmf_skb_pick_up_credit(fws, fifo, skb);
+ if ((fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT) ||
+ (brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) ||
+ (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)) {
+ brcmf_fws_return_credits(fws, fifo, 1);
+ brcmf_fws_schedule_deq(fws);
+ }
+ brcmf_fws_macdesc_return_req_credit(skb);
if (!remove_from_hanger)
ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, genbit);
- if (remove_from_hanger || ret) {
- entry->transit_count--;
- if (entry->suppressed)
- entry->suppr_transit_count--;
-
+ if (remove_from_hanger || ret)
brcmf_txfinalize(fws->drvr, skb, true);
- }
+
return 0;
}
static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws,
u8 *data)
{
+ ulong flags;
int i;
if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) {
@@ -1299,17 +1391,20 @@ static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws,
return BRCMF_FWS_RET_OK_NOSCHEDULE;
}
- brcmf_dbg(TRACE, "enter: data %pM\n", data);
+ brcmf_dbg(DATA, "enter: data %pM\n", data);
+ brcmf_fws_lock(fws->drvr, flags);
for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++)
brcmf_fws_return_credits(fws, i, data[i]);
- brcmf_dbg(INFO, "map: credit %x delay %x\n", fws->fifo_credit_map,
+ brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map,
fws->fifo_delay_map);
+ brcmf_fws_unlock(fws->drvr, flags);
return BRCMF_FWS_RET_OK_SCHEDULE;
}
static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data)
{
+ ulong lflags;
__le32 status_le;
u32 status;
u32 hslot;
@@ -1323,7 +1418,10 @@ static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data)
hslot = brcmf_txstatus_get_field(status, HSLOT);
genbit = brcmf_txstatus_get_field(status, GENERATION);
- return brcmf_fws_txstatus_process(fws, flags, hslot, genbit);
+ brcmf_fws_lock(fws->drvr, lflags);
+ brcmf_fws_txs_process(fws, flags, hslot, genbit);
+ brcmf_fws_unlock(fws->drvr, lflags);
+ return BRCMF_FWS_RET_OK_NOSCHEDULE;
}
static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data)
@@ -1331,26 +1429,11 @@ static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data)
__le32 timestamp;
memcpy(&timestamp, &data[2], sizeof(timestamp));
- brcmf_dbg(INFO, "received: seq %d, timestamp %d\n", data[1],
+ brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1],
le32_to_cpu(timestamp));
return 0;
}
-/* using macro so sparse checking does not complain
- * about locking imbalance.
- */
-#define brcmf_fws_lock(drvr, flags) \
-do { \
- flags = 0; \
- spin_lock_irqsave(&((drvr)->fws_spinlock), (flags)); \
-} while (0)
-
-/* using macro so sparse checking does not complain
- * about locking imbalance.
- */
-#define brcmf_fws_unlock(drvr, flags) \
- spin_unlock_irqrestore(&((drvr)->fws_spinlock), (flags))
-
static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp,
const struct brcmf_event_msg *e,
void *data)
@@ -1364,6 +1447,10 @@ static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp,
brcmf_err("event payload too small (%d)\n", e->datalen);
return -EINVAL;
}
+ if (fws->creditmap_received)
+ return 0;
+
+ fws->creditmap_received = true;
brcmf_dbg(TRACE, "enter: credits %pM\n", credits);
brcmf_fws_lock(ifp->drvr, flags);
@@ -1379,11 +1466,24 @@ static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp,
return 0;
}
+static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp,
+ const struct brcmf_event_msg *e,
+ void *data)
+{
+ struct brcmf_fws_info *fws = ifp->drvr->fws;
+ ulong flags;
+
+ brcmf_fws_lock(ifp->drvr, flags);
+ if (fws)
+ fws->bcmc_credit_check = true;
+ brcmf_fws_unlock(ifp->drvr, flags);
+ return 0;
+}
+
int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
struct sk_buff *skb)
{
struct brcmf_fws_info *fws = drvr->fws;
- ulong flags;
u8 *signal_data;
s16 data_len;
u8 type;
@@ -1392,7 +1492,7 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
s32 status;
s32 err;
- brcmf_dbg(TRACE, "enter: ifidx %d, skblen %u, sig %d\n",
+ brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n",
ifidx, skb->len, signal_len);
WARN_ON(signal_len > skb->len);
@@ -1403,9 +1503,6 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
return 0;
}
- /* lock during tlv parsing */
- brcmf_fws_lock(drvr, flags);
-
fws->stats.header_pulls++;
data_len = signal_len;
signal_data = skb->data;
@@ -1426,14 +1523,15 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
len = signal_data[1];
data = signal_data + 2;
- brcmf_dbg(INFO, "tlv type=%d (%s), len=%d, data[0]=%d\n", type,
- brcmf_fws_get_tlv_name(type), len, *data);
+ brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n",
+ brcmf_fws_get_tlv_name(type), type, len,
+ brcmf_fws_get_tlv_len(fws, type));
/* abort parsing when length invalid */
if (data_len < len + 2)
break;
- if (len != brcmf_fws_get_tlv_len(fws, type))
+ if (len < brcmf_fws_get_tlv_len(fws, type))
break;
err = BRCMF_FWS_RET_OK_NOSCHEDULE;
@@ -1498,203 +1596,74 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len,
if (skb->len == 0)
fws->stats.header_only_pkt++;
- brcmf_fws_unlock(drvr, flags);
- return 0;
-}
-
-static int brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb)
-{
- struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
- u8 *wlh;
- u16 data_offset = 0;
- u8 fillers;
- __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod);
-
- brcmf_dbg(TRACE, "enter: ea=%pM, ifidx=%u, pkttag=0x%08X\n",
- entry->ea, entry->interface_id, le32_to_cpu(pkttag));
- if (entry->send_tim_signal)
- data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
-
- /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */
- data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN;
- fillers = round_up(data_offset, 4) - data_offset;
- data_offset += fillers;
-
- skb_push(skb, data_offset);
- wlh = skb->data;
-
- wlh[0] = BRCMF_FWS_TYPE_PKTTAG;
- wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN;
- memcpy(&wlh[2], &pkttag, sizeof(pkttag));
- wlh += BRCMF_FWS_TYPE_PKTTAG_LEN + 2;
-
- if (entry->send_tim_signal) {
- entry->send_tim_signal = 0;
- wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP;
- wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN;
- wlh[2] = entry->mac_handle;
- wlh[3] = entry->traffic_pending_bmp;
- wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2;
- entry->traffic_lastreported_bmp = entry->traffic_pending_bmp;
- }
- if (fillers)
- memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers);
-
- brcmf_proto_hdrpush(fws->drvr, brcmf_skb_if_flags_get_field(skb, INDEX),
- data_offset >> 2, skb);
return 0;
}
-static int brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo,
+static void brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo,
struct sk_buff *p)
{
struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
struct brcmf_fws_mac_descriptor *entry = skcb->mac;
- int rc = 0;
- bool header_needed;
- int hslot = BRCMF_FWS_HANGER_MAXITEMS;
- u8 free_ctr;
- u8 ifidx;
u8 flags;
- header_needed = skcb->state != BRCMF_FWS_SKBSTATE_SUPPRESSED;
-
- if (header_needed) {
- /* obtaining free slot may fail, but that will be caught
- * by the hanger push. This assures the packet has a BDC
- * header upon return.
- */
- hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger);
- free_ctr = entry->seq[fifo];
- brcmf_skb_htod_tag_set_field(p, HSLOT, hslot);
- brcmf_skb_htod_tag_set_field(p, FREERUN, free_ctr);
- brcmf_skb_htod_tag_set_field(p, GENERATION, 1);
- entry->transit_count++;
- }
brcmf_skb_if_flags_set_field(p, TRANSMIT, 1);
- brcmf_skb_htod_tag_set_field(p, FIFO, fifo);
-
+ brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation);
flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST;
- if (!(skcb->if_flags & BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK)) {
+ if (brcmf_skb_if_flags_get_field(p, REQUESTED)) {
/*
- Indicate that this packet is being sent in response to an
- explicit request from the firmware side.
- */
+ * Indicate that this packet is being sent in response to an
+ * explicit request from the firmware side.
+ */
flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED;
}
brcmf_skb_htod_tag_set_field(p, FLAGS, flags);
- if (header_needed) {
- brcmf_fws_hdrpush(fws, p);
- rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot);
- if (rc)
- brcmf_err("hanger push failed: rc=%d\n", rc);
- } else {
- int gen;
-
- /* remove old header */
- rc = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, p);
- if (rc == 0) {
- hslot = brcmf_skb_htod_tag_get_field(p, HSLOT);
- brcmf_fws_hanger_get_genbit(&fws->hanger, p,
- hslot, &gen);
- brcmf_skb_htod_tag_set_field(p, GENERATION, gen);
-
- /* push new header */
- brcmf_fws_hdrpush(fws, p);
- }
- }
-
- return rc;
+ brcmf_fws_hdrpush(fws, p);
}
-static void
-brcmf_fws_rollback_toq(struct brcmf_fws_info *fws, struct sk_buff *skb)
+static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws,
+ struct sk_buff *skb, int fifo)
{
- /*
- put the packet back to the head of queue
-
- - suppressed packet goes back to suppress sub-queue
- - pull out the header, if new or delayed packet
-
- Note: hslot is used only when header removal is done.
- */
struct brcmf_fws_mac_descriptor *entry;
- enum brcmf_fws_skb_state state;
struct sk_buff *pktout;
+ int qidx, hslot;
int rc = 0;
- int fifo;
- int hslot;
- u8 ifidx;
- fifo = brcmf_skb_if_flags_get_field(skb, FIFO);
- state = brcmf_skbcb(skb)->state;
entry = brcmf_skbcb(skb)->mac;
-
- if (entry != NULL) {
- if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) {
- /* wl-header is saved for suppressed packets */
- pktout = brcmu_pktq_penq_head(&entry->psq, 2 * fifo + 1,
- skb);
- if (pktout == NULL) {
- brcmf_err("suppress queue full\n");
- rc = -ENOSPC;
- }
- } else {
- hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
-
- /* remove header first */
- rc = brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb);
- if (rc) {
- brcmf_err("header removal failed\n");
- /* free the hanger slot */
- brcmf_fws_hanger_poppkt(&fws->hanger, hslot,
- &pktout, true);
- rc = -EINVAL;
- goto fail;
- }
-
- /* delay-q packets are going to delay-q */
- pktout = brcmu_pktq_penq_head(&entry->psq,
- 2 * fifo, skb);
- if (pktout == NULL) {
- brcmf_err("delay queue full\n");
- rc = -ENOSPC;
- }
-
- /* free the hanger slot */
- brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &pktout,
- true);
-
- /* decrement sequence count */
- entry->seq[fifo]--;
+ if (entry->occupied) {
+ qidx = 2 * fifo;
+ if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED)
+ qidx++;
+
+ pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb);
+ if (pktout == NULL) {
+ brcmf_err("%s queue %d full\n", entry->name, qidx);
+ rc = -ENOSPC;
}
- /*
- if this packet did not count against FIFO credit, it must have
- taken a requested_credit from the firmware (for pspoll etc.)
- */
- if (!(brcmf_skbcb(skb)->if_flags &
- BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK))
- entry->requested_credit++;
} else {
- brcmf_err("no mac entry linked\n");
+ brcmf_err("%s entry removed\n", entry->name);
rc = -ENOENT;
}
-
-fail:
if (rc) {
- brcmf_txfinalize(fws->drvr, skb, false);
fws->stats.rollback_failed++;
- } else
+ hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
+ brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED,
+ hslot, 0);
+ } else {
fws->stats.rollback_success++;
+ brcmf_fws_return_credits(fws, fifo, 1);
+ brcmf_fws_macdesc_return_req_credit(skb);
+ }
}
static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws)
{
int lender_ac;
- if (time_after(fws->borrow_defer_timestamp, jiffies))
+ if (time_after(fws->borrow_defer_timestamp, jiffies)) {
+ fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE);
return -ENAVAIL;
+ }
for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) {
if (fws->fifo_credit[lender_ac]) {
@@ -1702,66 +1671,15 @@ static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws)
fws->fifo_credit[lender_ac]--;
if (fws->fifo_credit[lender_ac] == 0)
fws->fifo_credit_map &= ~(1 << lender_ac);
- brcmf_dbg(TRACE, "borrow credit from: %d\n", lender_ac);
+ fws->fifo_credit_map |= (1 << BRCMF_FWS_FIFO_AC_BE);
+ brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac);
return 0;
}
}
+ fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE);
return -ENAVAIL;
}
-static int brcmf_fws_consume_credit(struct brcmf_fws_info *fws, int fifo,
- struct sk_buff *skb)
-{
- struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac;
- int *credit = &fws->fifo_credit[fifo];
- int use_credit = 1;
-
- brcmf_dbg(TRACE, "enter: ac=%d, credits=%d\n", fifo, *credit);
-
- if (entry->requested_credit > 0) {
- /*
- * if the packet was pulled out while destination is in
- * closed state but had a non-zero packets requested,
- * then this should not count against the FIFO credit.
- * That is due to the fact that the firmware will
- * most likely hold onto this packet until a suitable
- * time later to push it to the appropriate AC FIFO.
- */
- entry->requested_credit--;
- if (entry->state == BRCMF_FWS_STATE_CLOSE)
- use_credit = 0;
- } else if (entry->requested_packet > 0) {
- entry->requested_packet--;
- brcmf_skb_if_flags_set_field(skb, REQUESTED, 1);
- if (entry->state == BRCMF_FWS_STATE_CLOSE)
- use_credit = 0;
- }
- brcmf_skb_if_flags_set_field(skb, CREDITCHECK, use_credit);
- if (!use_credit) {
- brcmf_dbg(TRACE, "exit: no creditcheck set\n");
- return 0;
- }
-
- if (fifo != BRCMF_FWS_FIFO_AC_BE)
- fws->borrow_defer_timestamp = jiffies +
- BRCMF_FWS_BORROW_DEFER_PERIOD;
-
- if (!(*credit)) {
- /* Try to borrow a credit from other queue */
- if (fifo == BRCMF_FWS_FIFO_AC_BE &&
- brcmf_fws_borrow_credit(fws) == 0)
- return 0;
-
- brcmf_dbg(TRACE, "exit: ac=%d, credits depleted\n", fifo);
- return -ENAVAIL;
- }
- (*credit)--;
- if (!(*credit))
- fws->fifo_credit_map &= ~(1 << fifo);
- brcmf_dbg(TRACE, "exit: ac=%d, credits=%d\n", fifo, *credit);
- return 0;
-}
-
static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo,
struct sk_buff *skb)
{
@@ -1769,32 +1687,51 @@ static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo,
struct brcmf_fws_mac_descriptor *entry;
struct brcmf_bus *bus = fws->drvr->bus_if;
int rc;
+ u8 ifidx;
entry = skcb->mac;
if (IS_ERR(entry))
return PTR_ERR(entry);
- rc = brcmf_fws_precommit_skb(fws, fifo, skb);
+ brcmf_fws_precommit_skb(fws, fifo, skb);
+ rc = brcmf_bus_txdata(bus, skb);
+ brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name,
+ skcb->if_flags, skcb->htod, rc);
if (rc < 0) {
- fws->stats.generic_error++;
+ brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb);
goto rollback;
}
- rc = brcmf_bus_txdata(bus, skb);
- if (rc < 0)
- goto rollback;
-
- entry->seq[fifo]++;
+ entry->transit_count++;
+ if (entry->suppressed)
+ entry->suppr_transit_count++;
fws->stats.pkt2bus++;
- if (brcmf_skbcb(skb)->if_flags & BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK) {
- fws->stats.send_pkts[fifo]++;
- fws->stats.fifo_credits_sent[fifo]++;
- }
+ fws->stats.send_pkts[fifo]++;
+ if (brcmf_skb_if_flags_get_field(skb, REQUESTED))
+ fws->stats.requested_sent[fifo]++;
return rc;
rollback:
- brcmf_fws_rollback_toq(fws, skb);
+ brcmf_fws_rollback_toq(fws, skb, fifo);
+ return rc;
+}
+
+static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p,
+ int fifo)
+{
+ struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p);
+ int rc, hslot;
+
+ hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger);
+ brcmf_skb_htod_tag_set_field(p, HSLOT, hslot);
+ brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]);
+ brcmf_skb_htod_tag_set_field(p, FIFO, fifo);
+ rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot);
+ if (!rc)
+ skcb->mac->seq[fifo]++;
+ else
+ fws->stats.generic_error++;
return rc;
}
@@ -1826,29 +1763,25 @@ int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
/* set control buffer information */
skcb->if_flags = 0;
- skcb->mac = brcmf_fws_find_mac_desc(fws, ifp, eh->h_dest);
skcb->state = BRCMF_FWS_SKBSTATE_NEW;
brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx);
if (!multicast)
fifo = brcmf_fws_prio2fifo[skb->priority];
- brcmf_skb_if_flags_set_field(skb, FIFO, fifo);
-
- brcmf_dbg(TRACE, "ea=%pM, multi=%d, fifo=%d\n", eh->h_dest,
- multicast, fifo);
brcmf_fws_lock(drvr, flags);
- if (skcb->mac->suppressed ||
- brcmf_fws_mac_desc_closed(fws, skcb->mac, fifo) ||
- brcmu_pktq_mlen(&skcb->mac->psq, 3 << (fifo * 2)) ||
- (!multicast &&
- brcmf_fws_consume_credit(fws, fifo, skb) < 0)) {
- /* enqueue the packet in delayQ */
- drvr->fws->fifo_delay_map |= 1 << fifo;
+ if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC)
+ fws->borrow_defer_timestamp = jiffies +
+ BRCMF_FWS_BORROW_DEFER_PERIOD;
+
+ skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest);
+ brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name,
+ eh->h_dest, multicast, fifo);
+ if (!brcmf_fws_assign_htod(fws, skb, fifo)) {
brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb);
+ brcmf_fws_schedule_deq(fws);
} else {
- if (brcmf_fws_commit_skb(fws, fifo, skb))
- if (!multicast)
- brcmf_skb_pick_up_credit(fws, fifo, skb);
+ brcmf_err("drop skb: no hanger slot\n");
+ brcmu_pkt_buf_free_skb(skb);
}
brcmf_fws_unlock(drvr, flags);
return 0;
@@ -1862,7 +1795,7 @@ void brcmf_fws_reset_interface(struct brcmf_if *ifp)
if (!entry)
return;
- brcmf_fws_init_mac_descriptor(entry, ifp->mac_addr, ifp->ifidx);
+ brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx);
}
void brcmf_fws_add_interface(struct brcmf_if *ifp)
@@ -1870,16 +1803,16 @@ void brcmf_fws_add_interface(struct brcmf_if *ifp)
struct brcmf_fws_info *fws = ifp->drvr->fws;
struct brcmf_fws_mac_descriptor *entry;
- brcmf_dbg(TRACE, "enter: idx=%d, mac=%pM\n",
- ifp->bssidx, ifp->mac_addr);
if (!ifp->ndev || !ifp->drvr->fw_signals)
return;
entry = &fws->desc.iface[ifp->ifidx];
ifp->fws_desc = entry;
- brcmf_fws_init_mac_descriptor(entry, ifp->mac_addr, ifp->ifidx);
+ brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx);
+ brcmf_fws_macdesc_set_name(fws, entry);
brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT,
BRCMF_FWS_PSQ_LEN);
+ brcmf_dbg(TRACE, "added %s\n", entry->name);
}
void brcmf_fws_del_interface(struct brcmf_if *ifp)
@@ -1887,13 +1820,13 @@ void brcmf_fws_del_interface(struct brcmf_if *ifp)
struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc;
ulong flags;
- brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx);
if (!entry)
return;
brcmf_fws_lock(ifp->drvr, flags);
ifp->fws_desc = NULL;
- brcmf_fws_clear_mac_descriptor(entry);
+ brcmf_dbg(TRACE, "deleting %s\n", entry->name);
+ brcmf_fws_macdesc_deinit(entry);
brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx);
brcmf_fws_unlock(ifp->drvr, flags);
}
@@ -1904,39 +1837,37 @@ static void brcmf_fws_dequeue_worker(struct work_struct *worker)
struct sk_buff *skb;
ulong flags;
int fifo;
- int credit;
fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work);
- brcmf_dbg(TRACE, "enter: fws=%p\n", fws);
brcmf_fws_lock(fws->drvr, flags);
- for (fifo = NL80211_NUM_ACS; fifo >= 0; fifo--) {
- brcmf_dbg(TRACE, "fifo %d credit %d\n", fifo,
- fws->fifo_credit[fifo]);
- for (credit = 0; credit < fws->fifo_credit[fifo]; /* nop */) {
+ for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked;
+ fifo--) {
+ while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) &&
+ (fifo == BRCMF_FWS_FIFO_BCMC))) {
skb = brcmf_fws_deq(fws, fifo);
- if (!skb || brcmf_fws_commit_skb(fws, fifo, skb))
+ if (!skb)
+ break;
+ fws->fifo_credit[fifo]--;
+ if (brcmf_fws_commit_skb(fws, fifo, skb))
+ break;
+ if (fws->bus_flow_blocked)
break;
- if (brcmf_skbcb(skb)->if_flags &
- BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK)
- credit++;
}
if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
- (credit == fws->fifo_credit[fifo])) {
- fws->fifo_credit[fifo] -= credit;
+ (fws->fifo_credit[fifo] == 0) &&
+ (!fws->bus_flow_blocked)) {
while (brcmf_fws_borrow_credit(fws) == 0) {
skb = brcmf_fws_deq(fws, fifo);
if (!skb) {
brcmf_fws_return_credits(fws, fifo, 1);
break;
}
- if (brcmf_fws_commit_skb(fws, fifo, skb)) {
- brcmf_fws_return_credits(fws, fifo, 1);
+ if (brcmf_fws_commit_skb(fws, fifo, skb))
+ break;
+ if (fws->bus_flow_blocked)
break;
- }
}
- } else {
- fws->fifo_credit[fifo] -= credit;
}
}
brcmf_fws_unlock(fws->drvr, flags);
@@ -1982,6 +1913,13 @@ int brcmf_fws_init(struct brcmf_pub *drvr)
brcmf_err("register credit map handler failed\n");
goto fail;
}
+ rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT,
+ brcmf_fws_notify_bcmc_credit_support);
+ if (rc < 0) {
+ brcmf_err("register bcmc credit handler failed\n");
+ brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP);
+ goto fail;
+ }
/* setting the iovar may fail if feature is unsupported
* so leave the rc as is so driver initialization can
@@ -1993,19 +1931,20 @@ int brcmf_fws_init(struct brcmf_pub *drvr)
}
brcmf_fws_hanger_init(&drvr->fws->hanger);
- brcmf_fws_init_mac_descriptor(&drvr->fws->desc.other, NULL, 0);
+ brcmf_fws_macdesc_init(&drvr->fws->desc.other, NULL, 0);
+ brcmf_fws_macdesc_set_name(drvr->fws, &drvr->fws->desc.other);
brcmu_pktq_init(&drvr->fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT,
BRCMF_FWS_PSQ_LEN);
/* create debugfs file for statistics */
brcmf_debugfs_create_fws_stats(drvr, &drvr->fws->stats);
- /* TODO: remove upon feature delivery */
- brcmf_err("%s bdcv2 tlv signaling [%x]\n",
+ brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n",
drvr->fw_signals ? "enabled" : "disabled", tlv);
return 0;
fail_event:
+ brcmf_fweh_unregister(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT);
brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP);
fail:
brcmf_fws_deinit(drvr);
@@ -2043,25 +1982,31 @@ bool brcmf_fws_fc_active(struct brcmf_fws_info *fws)
if (!fws)
return false;
- brcmf_dbg(TRACE, "enter: mode=%d\n", fws->fcmode);
return fws->fcmode != BRCMF_FWS_FCMODE_NONE;
}
void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb)
{
ulong flags;
+ u32 hslot;
- brcmf_fws_lock(fws->drvr, flags);
- brcmf_fws_txstatus_process(fws, BRCMF_FWS_TXSTATUS_FW_TOSSED,
- brcmf_skb_htod_tag_get_field(skb, HSLOT), 0);
- /* the packet never reached firmware so reclaim credit */
- if (fws->fcmode == BRCMF_FWS_FCMODE_EXPLICIT_CREDIT &&
- brcmf_skbcb(skb)->if_flags & BRCMF_SKB_IF_FLAGS_CREDITCHECK_MASK) {
- brcmf_fws_return_credits(fws,
- brcmf_skb_htod_tag_get_field(skb,
- FIFO),
- 1);
- brcmf_fws_schedule_deq(fws);
+ if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) {
+ brcmu_pkt_buf_free_skb(skb);
+ return;
}
+ brcmf_fws_lock(fws->drvr, flags);
+ hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT);
+ brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0);
brcmf_fws_unlock(fws->drvr, flags);
}
+
+void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked)
+{
+ struct brcmf_fws_info *fws = drvr->fws;
+
+ fws->bus_flow_blocked = flow_blocked;
+ if (!flow_blocked)
+ brcmf_fws_schedule_deq(fws);
+ else
+ fws->stats.bus_flow_block++;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 09:33:28 +0000