From: Arend van Spriel Date: Wed, 3 Apr 2013 10:40:39 +0000 (+0200) Subject: brcmfmac: add flow-control mode to firmware signalling X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c7f34a69a2e32b139a6b66c8599252c46f37abba;p=openwrt%2Fstaging%2Fblogic.git brcmfmac: add flow-control mode to firmware signalling Upcoming patches will add firmware signalled flow control. Prepare by adding the mode, which defaults to disable it. The mode can be queried by brcmf_fws_fc_active() and set by a module parameter. Reviewed-by: Hante Meuleman Reviewed-by: Piotr Haber Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h index af307c101c94..ef5e3a92deb1 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h @@ -623,5 +623,7 @@ extern void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx); void brcmf_txflowblock_if(struct brcmf_if *ifp, enum brcmf_netif_stop_reason reason, bool state); extern u32 brcmf_get_chip_info(struct brcmf_if *ifp); +extern void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp, + bool success); #endif /* _BRCMF_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c index 3ba9e1049f3b..05c8840392e5 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -363,21 +363,20 @@ void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list) } } -void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) +void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp, + bool success) { - u8 ifidx; + struct brcmf_if *ifp; struct ethhdr *eh; + u8 ifidx; u16 type; - struct brcmf_bus *bus_if = dev_get_drvdata(dev); - struct brcmf_pub *drvr = bus_if->drvr; - struct brcmf_if *ifp; int res; res = brcmf_proto_hdrpull(drvr, false, &ifidx, txp); ifp = drvr->iflist[ifidx]; if (!ifp) - goto done; + return; if (res == 0) { eh = (struct ethhdr *)(txp->data); @@ -391,8 +390,18 @@ void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) } if (!success) ifp->stats.tx_errors++; +} -done: +void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + /* await txstatus signal for firmware is active */ + if (success && brcmf_fws_fc_active(drvr->fws)) + return; + + brcmf_txfinalize(drvr, txp, success); brcmu_pkt_buf_free_skb(txp); } diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c index 2afd850f22c6..cb1414d93a67 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c @@ -14,6 +14,7 @@ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include +#include #include #include #include @@ -124,10 +125,6 @@ static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) #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_MAC_DESC_TABLE_SIZE 32 #define BRCMF_FWS_MAX_IFNUM 16 #define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff @@ -245,6 +242,12 @@ struct brcmf_skbuff_cb { BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT) +enum brcmf_fws_fcmode { + BRCMF_FWS_FCMODE_NONE, + BRCMF_FWS_FCMODE_IMPLIED_CREDIT, + BRCMF_FWS_FCMODE_EXPLICIT_CREDIT +}; + /** * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface * @@ -328,9 +331,14 @@ struct brcmf_fws_info { struct brcmf_fws_hanger hanger; struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE]; struct brcmf_fws_mac_descriptor other; + enum brcmf_fws_fcmode fcmode; int fifo_credit[NL80211_NUM_ACS+1+1]; }; +static int fcmode; +module_param(fcmode, int, S_IRUSR); +MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control"); + /** * brcmf_fws_get_tlv_len() - returns defined length for given tlv id. */ @@ -745,6 +753,7 @@ int brcmf_fws_init(struct brcmf_pub *drvr) /* set linkage back */ drvr->fws->drvr = drvr; + drvr->fws->fcmode = fcmode; /* TODO: remove upon feature delivery */ brcmf_err("%s bdcv2 tlv signaling [%x]\n", @@ -920,3 +929,12 @@ void brcmf_fws_del_interface(struct brcmf_if *ifp) brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx); kfree(entry); } + +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; +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h index 38a75e494d7d..1566f4de0eda 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h @@ -20,6 +20,7 @@ int brcmf_fws_init(struct brcmf_pub *drvr); 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);