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brcmfmac: allow stopping netif queue for different reasons

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Currently, the netif queue is only stopped when the bus interface is
giving a push back. This will change soon so prepare the driver by
adding a stop reason and stop/resume the queue accordingly.

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>
This commit is contained in:
Arend van Spriel 2013-04-03 12:40:34 +02:00 committed by John W. Linville
parent fba1400a9b
commit 29e04ae31d
2 changed files with 38 additions and 8 deletions
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17
drivers/net/wireless/brcm80211/brcmfmac/dhd.h
View File

@ -554,6 +554,19 @@ struct brcmf_if_event {
struct brcmf_cfg80211_vif;
struct brcmf_fws_mac_descriptor;
/**
* enum brcmf_netif_stop_reason - reason for stopping netif queue.
*
* @BRCMF_NETIF_STOP_REASON_FWS_FC:
* netif stopped due to firmware signalling flow control.
* @BRCMF_NETIF_STOP_REASON_BLOCK_BUS:
* netif stopped due to bus blocking.
*/
enum brcmf_netif_stop_reason {
BRCMF_NETIF_STOP_REASON_FWS_FC = 1,
BRCMF_NETIF_STOP_REASON_BLOCK_BUS = 2
};
/**
* struct brcmf_if - interface control information.
*
@ -567,6 +580,7 @@ struct brcmf_fws_mac_descriptor;
* @ifidx: interface index in device firmware.
* @bssidx: index of bss associated with this interface.
* @mac_addr: assigned mac address.
* @netif_stop: bitmap indicates reason why netif queues are stopped.
* @pend_8021x_cnt: tracks outstanding number of 802.1x frames.
* @pend_8021x_wait: used for signalling change in count.
*/
@ -581,6 +595,7 @@ struct brcmf_if {
int ifidx;
s32 bssidx;
u8 mac_addr[ETH_ALEN];
u8 netif_stop;
atomic_t pend_8021x_cnt;
wait_queue_head_t pend_8021x_wait;
};
@ -605,6 +620,8 @@ extern int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked);
extern struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx,
s32 ifidx, char *name, u8 *mac_addr);
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);
#endif /* _BRCMF_H_ */

29
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
View File

@ -248,9 +248,27 @@ done:
return NETDEV_TX_OK;
}
void brcmf_txflowblock_if(struct brcmf_if *ifp,
enum brcmf_netif_stop_reason reason, bool state)
{
if (!ifp)
return;
brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n",
ifp->bssidx, ifp->netif_stop, reason, state);
if (state) {
if (!ifp->netif_stop)
netif_stop_queue(ifp->ndev);
ifp->netif_stop |= reason;
} else {
ifp->netif_stop &= ~reason;
if (!ifp->netif_stop)
netif_wake_queue(ifp->ndev);
}
}
void brcmf_txflowblock(struct device *dev, bool state)
{
struct net_device *ndev;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
int i;
@ -258,13 +276,8 @@ void brcmf_txflowblock(struct device *dev, bool state)
brcmf_dbg(TRACE, "Enter\n");
for (i = 0; i < BRCMF_MAX_IFS; i++)
if (drvr->iflist[i]) {
ndev = drvr->iflist[i]->ndev;
if (state)
netif_stop_queue(ndev);
else
netif_wake_queue(ndev);
}
brcmf_txflowblock_if(drvr->iflist[i],
BRCMF_NETIF_STOP_REASON_BLOCK_BUS, state);
}
void brcmf_rx_frames(struct device *dev, struct sk_buff_head *skb_list)