fixes a TX hang that could be possible to happen when the trasfers are

in the high speed that some drivers don't call if_start callback after
marking ~IFF_DRV_OACTIVE.

MFC after:	3 days

5 files changed, 23 insertions, 2 deletions

diff --git a/sys/dev/usb/wlan/if_uath.c b/sys/dev/usb/wlan/if_uath.c
index ca9beb3..686f9b6 100644
--- a/sys/dev/usb/wlan/if_uath.c
+++ b/sys/dev/usb/wlan/if_uath.c
@@ -2762,6 +2762,9 @@ setup:
 			m = NULL;
 			desc = NULL;
 		}
+		if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
+		    !IFQ_IS_EMPTY(&ifp->if_snd))
+			uath_start(ifp);
 		UATH_LOCK(sc);
 		break;
 	default:
diff --git a/sys/dev/usb/wlan/if_upgt.c b/sys/dev/usb/wlan/if_upgt.c
index c04c398..67e6980 100644
--- a/sys/dev/usb/wlan/if_upgt.c
+++ b/sys/dev/usb/wlan/if_upgt.c
@@ -2291,6 +2291,9 @@ setup:
 				(void) ieee80211_input_all(ic, m, rssi, nf);
 			m = NULL;
 		}
+		if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
+		    !IFQ_IS_EMPTY(&ifp->if_snd))
+			upgt_start(ifp);
 		UPGT_LOCK(sc);
 		break;
 	default:
diff --git a/sys/dev/usb/wlan/if_ural.c b/sys/dev/usb/wlan/if_ural.c
index f9a90a2..c2e6d75 100644
--- a/sys/dev/usb/wlan/if_ural.c
+++ b/sys/dev/usb/wlan/if_ural.c
@@ -837,6 +837,9 @@ tr_setup:
 
 			usbd_transfer_submit(xfer);
 		}
+		RAL_UNLOCK(sc);
+		ural_start(ifp);
+		RAL_LOCK(sc);
 		break;
 
 	default:			/* Error */
@@ -945,8 +948,8 @@ tr_setup:
 		 * the private mutex of a device! That is why we do the
 		 * "ieee80211_input" here, and not some lines up!
 		 */
+		RAL_UNLOCK(sc);
 		if (m) {
-			RAL_UNLOCK(sc);
 			ni = ieee80211_find_rxnode(ic,
 			    mtod(m, struct ieee80211_frame_min *));
 			if (ni != NULL) {
@@ -954,8 +957,11 @@ tr_setup:
 				ieee80211_free_node(ni);
 			} else
 				(void) ieee80211_input_all(ic, m, rssi, nf);
-			RAL_LOCK(sc);
 		}
+		if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
+		    !IFQ_IS_EMPTY(&ifp->if_snd))
+			ural_start(ifp);
+		RAL_LOCK(sc);
 		return;
 
 	default:			/* Error */
diff --git a/sys/dev/usb/wlan/if_urtw.c b/sys/dev/usb/wlan/if_urtw.c
index 391a32c..2c8b7c2 100644
--- a/sys/dev/usb/wlan/if_urtw.c
+++ b/sys/dev/usb/wlan/if_urtw.c
@@ -4072,6 +4072,9 @@ setup:
 				(void) ieee80211_input_all(ic, m, rssi, nf);
 			m = NULL;
 		}
+		if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
+		    !IFQ_IS_EMPTY(&ifp->if_snd))
+			urtw_start(ifp);
 		URTW_LOCK(sc);
 		break;
 	default:
diff --git a/sys/dev/usb/wlan/if_zyd.c b/sys/dev/usb/wlan/if_zyd.c
index 493c5fa..6fa07c7 100644
--- a/sys/dev/usb/wlan/if_zyd.c
+++ b/sys/dev/usb/wlan/if_zyd.c
@@ -2322,6 +2322,9 @@ tr_setup:
 			} else
 				(void)ieee80211_input_all(ic, m, rssi, nf);
 		}
+		if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0 &&
+		    !IFQ_IS_EMPTY(&ifp->if_snd))
+			zyd_start(ifp);
 		ZYD_LOCK(sc);
 		break;
 
@@ -2431,6 +2434,9 @@ tr_setup:
 			usbd_xfer_set_priv(xfer, data);
 			usbd_transfer_submit(xfer);
 		}
+		ZYD_UNLOCK(sc);
+		zyd_start(ifp);
+		ZYD_LOCK(sc);
 		break;
 
 	default:			/* Error */