diff -r d06c831cbf6b sys/dev/netif/em/if_em.c
--- a/sys/dev/netif/em/if_em.c	Thu Mar 22 23:31:22 2007 +0000
+++ b/sys/dev/netif/em/if_em.c	Fri Mar 23 17:59:49 2007 +0200
@@ -551,6 +551,11 @@ em_attach(device_t dev)
 		adapter->num_rx_desc = em_rxd;
 	}
 
+	SYSCTL_ADD_INT(NULL, SYSCTL_CHILDREN(adapter->sysctl_tree), OID_AUTO, "rxd",
+		       CTLFLAG_RD, &adapter->num_rx_desc, 0, NULL);
+	SYSCTL_ADD_INT(NULL, SYSCTL_CHILDREN(adapter->sysctl_tree), OID_AUTO, "txd",
+		       CTLFLAG_RD, &adapter->num_tx_desc, 0, NULL);
+
 	adapter->hw.autoneg = DO_AUTO_NEG;
 	adapter->hw.wait_autoneg_complete = WAIT_FOR_AUTO_NEG_DEFAULT;
 	adapter->hw.autoneg_advertised = AUTONEG_ADV_DEFAULT;