5 files changed, 8 insertions, 4 deletions

diff --git a/sys/net/if.c b/sys/net/if.c
index 1acfb24dc511..780f2c291aac 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -104,6 +104,10 @@ struct ifindex_entry {
 SYSCTL_NODE(_net, PF_LINK, link, CTLFLAG_RW, 0, "Link layers");
 SYSCTL_NODE(_net_link, 0, generic, CTLFLAG_RW, 0, "Generic link-management");
 
+TUNABLE_INT("net.link.ifqmaxlen", &ifqmaxlen);
+SYSCTL_UINT(_net_link, OID_AUTO, ifqmaxlen, CTLFLAG_RDTUN,
+    &ifqmaxlen, 0, "max send queue size");
+
 /* Log link state change events */
 static int log_link_state_change = 1;
 
diff --git a/sys/net/if_ef.c b/sys/net/if_ef.c
index 94fb03d13a45..61f7cb7933fd 100644
--- a/sys/net/if_ef.c
+++ b/sys/net/if_ef.c
@@ -129,7 +129,7 @@ ef_attach(struct efnet *sc)
 
 	ifp->if_start = ef_start;
 	ifp->if_init = ef_init;
-	ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
+	ifp->if_snd.ifq_maxlen = ifqmaxlen;
 	ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);
 	/*
 	 * Attach the interface
diff --git a/sys/net/if_gif.c b/sys/net/if_gif.c
index ae0ff4e33690..76838396bc44 100644
--- a/sys/net/if_gif.c
+++ b/sys/net/if_gif.c
@@ -185,7 +185,7 @@ gif_clone_create(ifc, unit, params)
 	GIF2IFP(sc)->if_ioctl  = gif_ioctl;
 	GIF2IFP(sc)->if_start  = gif_start;
 	GIF2IFP(sc)->if_output = gif_output;
-	GIF2IFP(sc)->if_snd.ifq_maxlen = IFQ_MAXLEN;
+	GIF2IFP(sc)->if_snd.ifq_maxlen = ifqmaxlen;
 	if_attach(GIF2IFP(sc));
 	bpfattach(GIF2IFP(sc), DLT_NULL, sizeof(u_int32_t));
 	if (ng_gif_attach_p != NULL)
diff --git a/sys/net/if_gre.c b/sys/net/if_gre.c
index bac3d7954fa1..1f1e1082d9b3 100644
--- a/sys/net/if_gre.c
+++ b/sys/net/if_gre.c
@@ -184,7 +184,7 @@ gre_clone_create(ifc, unit, params)
 	GRE2IFP(sc)->if_softc = sc;
 	if_initname(GRE2IFP(sc), ifc->ifc_name, unit);
 
-	GRE2IFP(sc)->if_snd.ifq_maxlen = IFQ_MAXLEN;
+	GRE2IFP(sc)->if_snd.ifq_maxlen = ifqmaxlen;
 	GRE2IFP(sc)->if_addrlen = 0;
 	GRE2IFP(sc)->if_hdrlen = 24; /* IP + GRE */
 	GRE2IFP(sc)->if_mtu = GREMTU;
diff --git a/sys/net/if_stf.c b/sys/net/if_stf.c
index 5c082c4926a6..1ef5581ae629 100644
--- a/sys/net/if_stf.c
+++ b/sys/net/if_stf.c
@@ -252,7 +252,7 @@ stf_clone_create(struct if_clone *ifc, char *name, size_t len, caddr_t params)
 	ifp->if_mtu    = IPV6_MMTU;
 	ifp->if_ioctl  = stf_ioctl;
 	ifp->if_output = stf_output;
-	ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
+	ifp->if_snd.ifq_maxlen = ifqmaxlen;
 	if_attach(ifp);
 	bpfattach(ifp, DLT_NULL, sizeof(u_int32_t));
 	return (0);