net/sfc: make Tx free threshold check datapath specific

[dpdk.git] / drivers / net / sfc / sfc_dp_tx.h

diff --git a/drivers/net/sfc/sfc_dp_tx.h b/drivers/net/sfc/sfc_dp_tx.h
index 94d1b10..32d7681 100644 (file)
--- a/drivers/net/sfc/sfc_dp_tx.h
+++ b/drivers/net/sfc/sfc_dp_tx.h
@@ -77,6 +77,22 @@ struct sfc_dp_tx_qcreate_info {
        volatile void           *mem_bar;
 };
 
+/**
+ * Get size of transmit and event queue rings by the number of Tx
+ * descriptors.
+ *
+ * @param nb_tx_desc           Number of Tx descriptors
+ * @param txq_entries          Location for number of Tx ring entries
+ * @param evq_entries          Location for number of event ring entries
+ * @param txq_max_fill_level   Location for maximum Tx ring fill level
+ *
+ * @return 0 or positive errno.
+ */
+typedef int (sfc_dp_tx_qsize_up_rings_t)(uint16_t nb_tx_desc,
+                                        unsigned int *txq_entries,
+                                        unsigned int *evq_entries,
+                                        unsigned int *txq_max_fill_level);
+
 /**
  * Allocate and initialize datapath transmit queue.
  *
@@ -144,6 +160,7 @@ struct sfc_dp_tx {
 #define SFC_DP_TX_FEAT_MULTI_PROCESS   0x8
 #define SFC_DP_TX_FEAT_MULTI_POOL      0x10
 #define SFC_DP_TX_FEAT_REFCNT          0x20
+       sfc_dp_tx_qsize_up_rings_t      *qsize_up_rings;
        sfc_dp_tx_qcreate_t             *qcreate;
        sfc_dp_tx_qdestroy_t            *qdestroy;
        sfc_dp_tx_qstart_t              *qstart;