The firmware can sent an event indicating it supports the credit
mechanism for BC/MC traffic. This patch takes that into account.
Reviewed-by: Hante Meuleman <meuleman@xxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Signed-off-by: Arend van Spriel <arend@xxxxxxxxxxxx>
---
drivers/net/wireless/brcm80211/brcmfmac/fweh.h | 3 +-
drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c | 31 +++++++++++++++++++-
2 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fweh.h b/drivers/net/wireless/brcm80211/brcmfmac/fweh.h
index 6ec5db9..e679214 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fweh.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fweh.h
@@ -101,7 +101,8 @@ struct brcmf_event;
BRCMF_ENUM_DEF(P2P_PROBEREQ_MSG, 72) \
BRCMF_ENUM_DEF(DCS_REQUEST, 73) \
BRCMF_ENUM_DEF(FIFO_CREDIT_MAP, 74) \
- BRCMF_ENUM_DEF(ACTION_FRAME_RX, 75)
+ BRCMF_ENUM_DEF(ACTION_FRAME_RX, 75) \
+ BRCMF_ENUM_DEF(BCMC_CREDIT_SUPPORT, 127)
#define BRCMF_ENUM_DEF(id, val) \
BRCMF_E_##id = (val),
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
index 5d809c7..b173311 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
@@ -426,6 +426,7 @@ 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;
@@ -1435,6 +1436,20 @@ 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)
{
@@ -1803,6 +1818,12 @@ int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb)
eh->h_dest, multicast, fifo);
brcmf_fws_lock(drvr, flags);
+ /* multicast credit support is conditional, setting
+ * flag to false to assure credit is consumed below.
+ */
+ if (fws->bcmc_credit_check)
+ multicast = false;
+
if (skcb->mac->suppressed ||
fws->bus_flow_blocked ||
brcmf_fws_mac_desc_closed(fws, skcb->mac, fifo) ||
@@ -1875,7 +1896,8 @@ static void brcmf_fws_dequeue_worker(struct work_struct *worker)
brcmf_fws_lock(fws->drvr, flags);
for (fifo = NL80211_NUM_ACS; fifo >= 0 && !fws->bus_flow_blocked;
fifo--) {
- while (fws->fifo_credit[fifo]) {
+ while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) &&
+ (fifo == BRCMF_FWS_FIFO_BCMC))) {
skb = brcmf_fws_deq(fws, fifo);
if (!skb)
break;
@@ -1944,6 +1966,13 @@ 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
--
1.7.10.4
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