Index: sys/net/iflib.c
===================================================================
--- sys/net/iflib.c	(revision 351572)
+++ sys/net/iflib.c	(working copy)
@@ -6060,6 +6060,7 @@ iflib_legacy_setup(if_ctx_t ctx, driver_filter_t f
 	gtask_fn_t *fn;
 	void *q;
 	int err, tqrid;
+	bool rx_only;
 
 	q = &ctx->ifc_rxqs[0];
 	info = &rxq[0].ifr_filter_info;
@@ -6067,17 +6068,19 @@ iflib_legacy_setup(if_ctx_t ctx, driver_filter_t f
 	tqg = qgroup_if_io_tqg;
 	tqrid = *rid;
 	fn = _task_fn_rx;
+	rx_only = !!(ctx->ifc_sctx->isc_flags & IFLIB_SINGLE_IRQ_RX_ONLY);
 
 	ctx->ifc_flags |= IFC_LEGACY;
 	info->ifi_filter = filter;
 	info->ifi_filter_arg = filter_arg;
 	info->ifi_task = gtask;
-	info->ifi_ctx = q;
+	info->ifi_ctx = rx_only ? ctx : q;
 
 	dev = ctx->ifc_dev;
 	/* We allocate a single interrupt resource */
-	if ((err = _iflib_irq_alloc(ctx, irq, tqrid, iflib_fast_intr_rxtx,
-	    NULL, info, name)) != 0)
+	err = _iflib_irq_alloc(ctx, irq, tqrid, rx_only ? iflib_fast_intr_ctx :
+	    iflib_fast_intr_rxtx, NULL, info, name);
+	if (err != 0)
 		return (err);
 	GROUPTASK_INIT(gtask, 0, fn, q);
 	res = irq->ii_res;
Index: sys/net/iflib.h
===================================================================
--- sys/net/iflib.h	(revision 351572)
+++ sys/net/iflib.h	(working copy)
@@ -366,6 +366,11 @@ typedef enum {
  * Driver will pass the media
  */
 #define IFLIB_DRIVER_MEDIA	0x20000
+/*
+ * When using a single hardware interrupt for the interface, only process RX
+ * interrupts instead of doing combined RX/TX processing.
+ */
+#define	IFLIB_SINGLE_IRQ_RX_ONLY	0x40000
 
 /*
  * field accessors
Index: sys/dev/vmware/vmxnet3/if_vmx.c
===================================================================
--- sys/dev/vmware/vmxnet3/if_vmx.c	(revision 351572)
+++ sys/dev/vmware/vmxnet3/if_vmx.c	(working copy)
@@ -287,7 +287,7 @@ static struct if_shared_ctx vmxnet3_sctx_init = {
 	.isc_vendor_info = vmxnet3_vendor_info_array,
 	.isc_driver_version = "2",
 	.isc_driver = &vmxnet3_iflib_driver,
-	.isc_flags = IFLIB_HAS_RXCQ | IFLIB_HAS_TXCQ,
+	.isc_flags = IFLIB_HAS_RXCQ | IFLIB_HAS_TXCQ | IFLIB_SINGLE_IRQ_RX_ONLY,
 
 	/*
 	 * Number of receive queues per receive queue set, with associated