e1000: get queue info and descriptor limits

[dpdk.git] / drivers / net / e1000 / e1000_ethdev.h

diff --git a/drivers/net/e1000/e1000_ethdev.h b/drivers/net/e1000/e1000_ethdev.h
index 4e69e44..3c6f613 100644 (file)
--- a/drivers/net/e1000/e1000_ethdev.h
+++ b/drivers/net/e1000/e1000_ethdev.h
@@ -108,6 +108,30 @@
        ETH_RSS_IPV6_TCP_EX | \
        ETH_RSS_IPV6_UDP_EX)
 
+/*
+ * Maximum number of Ring Descriptors.
+ *
+ * Since RDLEN/TDLEN should be multiple of 128 bytes, the number of ring
+ * desscriptors should meet the following condition:
+ * (num_ring_desc * sizeof(struct e1000_rx/tx_desc)) % 128 == 0
+ */
+#define        E1000_MIN_RING_DESC     32
+#define        E1000_MAX_RING_DESC     4096
+
+/*
+ * TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
+ * multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary.
+ * This will also optimize cache line size effect.
+ * H/W supports up to cache line size 128.
+ */
+#define        E1000_ALIGN     128
+
+#define        IGB_RXD_ALIGN   (E1000_ALIGN / sizeof(union e1000_adv_rx_desc))
+#define        IGB_TXD_ALIGN   (E1000_ALIGN / sizeof(union e1000_adv_tx_desc))
+
+#define        EM_RXD_ALIGN    (E1000_ALIGN / sizeof(struct e1000_rx_desc))
+#define        EM_TXD_ALIGN    (E1000_ALIGN / sizeof(struct e1000_data_desc))
+
 /* structure for interrupt relative data */
 struct e1000_interrupt {
        uint32_t flags;
@@ -307,6 +331,12 @@ void igb_pf_mbx_process(struct rte_eth_dev *eth_dev);
 
 int igb_pf_host_configure(struct rte_eth_dev *eth_dev);
 
+void igb_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+       struct rte_eth_rxq_info *qinfo);
+
+void igb_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+       struct rte_eth_txq_info *qinfo);
+
 /*
  * RX/TX EM function prototypes
  */
@@ -343,6 +373,12 @@ uint16_t eth_em_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 uint16_t eth_em_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
                uint16_t nb_pkts);
 
+void em_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+       struct rte_eth_rxq_info *qinfo);
+
+void em_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+       struct rte_eth_txq_info *qinfo);
+
 void igb_pf_host_uninit(struct rte_eth_dev *dev);
 
 #endif /* _E1000_ETHDEV_H_ */