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[kvmfornfv.git] / kernel / drivers / net / ethernet / cavium / thunder / nic.h

diff --git a/kernel/drivers/net/ethernet/cavium/thunder/nic.h b/kernel/drivers/net/ethernet/cavium/thunder/nic.h
index 39ca674..22471d2 100644 (file)
--- a/kernel/drivers/net/ethernet/cavium/thunder/nic.h
+++ b/kernel/drivers/net/ethernet/cavium/thunder/nic.h
@@ -116,6 +116,15 @@
 #define NIC_PF_INTR_ID_MBOX0           8
 #define NIC_PF_INTR_ID_MBOX1           9
 
+/* Minimum FIFO level before all packets for the CQ are dropped
+ *
+ * This value ensures that once a packet has been "accepted"
+ * for reception it will not get dropped due to non-availability
+ * of CQ descriptor. An errata in HW mandates this value to be
+ * atleast 0x100.
+ */
+#define NICPF_CQM_MIN_DROP_LEVEL       0x100
+
 /* Global timer for CQ timer thresh interrupts
  * Calculated for SCLK of 700Mhz
  * value written should be a 1/16th of what is expected