Index: if_fxp.c
===================================================================
RCS file: /data/ncvs/src/sys/dev/fxp/if_fxp.c,v
retrieving revision 1.151
diff -u -r1.151 if_fxp.c
--- if_fxp.c	8 Mar 2003 21:44:21 -0000	1.151
+++ if_fxp.c	10 Apr 2003 18:42:18 -0000
@@ -258,6 +258,10 @@
 static int fxp_rnr;
 SYSCTL_INT(_hw, OID_AUTO, fxp_rnr, CTLFLAG_RW, &fxp_rnr, 0, "fxp rnr events");
 
+static int fxp_noflow;
+SYSCTL_INT(_hw, OID_AUTO, fxp_noflow, CTLFLAG_RW, &fxp_noflow, 0, "fxp flow control disabled");
+TUNABLE_INT("hw.fxp_noflow", &fxp_noflow);
+
 /*
  * Inline function to copy a 16-bit aligned 32-bit quantity.
  */
@@ -1831,7 +1835,7 @@
 	cbp->mc_all =		sc->flags & FXP_FLAG_ALL_MCAST ? 1 : 0;
 	cbp->gamla_rx =		sc->flags & FXP_FLAG_EXT_RFA ? 1 : 0;
 
-	if (sc->revision == FXP_REV_82557) {
+	if (fxp_noflow || sc->revision == FXP_REV_82557) {
 		/*
 		 * The 82557 has no hardware flow control, the values
 		 * below are the defaults for the chip.