Add new tunable 'net.link.ifqmaxlen' to set default send interface

queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after:	1 month

7 files changed, 12 insertions, 12 deletions

diff --git a/sys/dev/usb/wlan/if_rum.c b/sys/dev/usb/wlan/if_rum.c
index 4a5fbae..155b767 100644
--- a/sys/dev/usb/wlan/if_rum.c
+++ b/sys/dev/usb/wlan/if_rum.c
@@ -478,8 +478,8 @@ rum_attach(device_t self)
 	ifp->if_init = rum_init;
 	ifp->if_ioctl = rum_ioctl;
 	ifp->if_start = rum_start;
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
-	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic->ic_ifp = ifp;
diff --git a/sys/dev/usb/wlan/if_run.c b/sys/dev/usb/wlan/if_run.c
index 3ab607f..c798c32 100644
--- a/sys/dev/usb/wlan/if_run.c
+++ b/sys/dev/usb/wlan/if_run.c
@@ -609,8 +609,8 @@ run_attach(device_t self)
 	ifp->if_init = run_init;
 	ifp->if_ioctl = run_ioctl;
 	ifp->if_start = run_start;
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
-	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic->ic_ifp = ifp;
diff --git a/sys/dev/usb/wlan/if_uath.c b/sys/dev/usb/wlan/if_uath.c
index 7838d5a..40b7c83 100644
--- a/sys/dev/usb/wlan/if_uath.c
+++ b/sys/dev/usb/wlan/if_uath.c
@@ -438,8 +438,8 @@ uath_attach(device_t dev)
 	ifp->if_ioctl = uath_ioctl;
 	ifp->if_start = uath_start;
 	/* XXX UATH_TX_DATA_LIST_COUNT */
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
-	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic = ifp->if_l2com;
diff --git a/sys/dev/usb/wlan/if_upgt.c b/sys/dev/usb/wlan/if_upgt.c
index 20f06c6..091b9df 100644
--- a/sys/dev/usb/wlan/if_upgt.c
+++ b/sys/dev/usb/wlan/if_upgt.c
@@ -331,7 +331,7 @@ upgt_attach(device_t dev)
 	ifp->if_init = upgt_init;
 	ifp->if_ioctl = upgt_ioctl;
 	ifp->if_start = upgt_start;
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic = ifp->if_l2com;
diff --git a/sys/dev/usb/wlan/if_ural.c b/sys/dev/usb/wlan/if_ural.c
index 4a4378b..6839bcf 100644
--- a/sys/dev/usb/wlan/if_ural.c
+++ b/sys/dev/usb/wlan/if_ural.c
@@ -467,8 +467,8 @@ ural_attach(device_t self)
 	ifp->if_init = ural_init;
 	ifp->if_ioctl = ural_ioctl;
 	ifp->if_start = ural_start;
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
-	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic->ic_ifp = ifp;
diff --git a/sys/dev/usb/wlan/if_urtw.c b/sys/dev/usb/wlan/if_urtw.c
index 6604268..9ff16f3 100644
--- a/sys/dev/usb/wlan/if_urtw.c
+++ b/sys/dev/usb/wlan/if_urtw.c
@@ -867,8 +867,8 @@ urtw_attach(device_t dev)
 	ifp->if_ioctl = urtw_ioctl;
 	ifp->if_start = urtw_start;
 	/* XXX URTW_TX_DATA_LIST_COUNT */
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
-	ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN;
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
+	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic = ifp->if_l2com;
diff --git a/sys/dev/usb/wlan/if_zyd.c b/sys/dev/usb/wlan/if_zyd.c
index a0b8179..1a298f8 100644
--- a/sys/dev/usb/wlan/if_zyd.c
+++ b/sys/dev/usb/wlan/if_zyd.c
@@ -381,7 +381,7 @@ zyd_attach(device_t dev)
 	ifp->if_init = zyd_init;
 	ifp->if_ioctl = zyd_ioctl;
 	ifp->if_start = zyd_start;
-	IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
+	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
 	IFQ_SET_READY(&ifp->if_snd);
 
 	ic = ifp->if_l2com;