[3/8] net/nfp: adjust the data field of Rx/Tx queue
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Commit Message
Adjust the data field of Rx/Tx queue structure, move the cold data back
and hold position for hot data.
Signed-off-by: Chaoyong He <chaoyong.he@corigine.com>
Reviewed-by: Long Wu <long.wu@corigine.com>
Reviewed-by: Peng Zhang <peng.zhang@corigine.com>
---
drivers/net/nfp/nfp_rxtx.h | 71 +++++++++++++++++++-------------------
1 file changed, 36 insertions(+), 35 deletions(-)
@@ -31,21 +31,6 @@ struct nfp_net_txq {
/** Backpointer to nfp_net structure */
struct nfp_net_hw *hw;
- /** Point to the base of the queue structure on the NFP. */
- uint8_t *qcp_q;
-
- /**
- * Host side read and write pointer, they are free running and
- * have little relation to the QCP pointers.
- */
- uint32_t wr_p;
- uint32_t rd_p;
-
- /** The size of the queue in number of descriptors. */
- uint32_t tx_count;
-
- uint32_t tx_free_thresh;
-
/**
* For each descriptor keep a reference to the mbuf and
* DMA address used until completion is signalled.
@@ -61,6 +46,18 @@ struct nfp_net_txq {
struct nfp_net_nfdk_tx_desc *ktxds;
};
+ /**
+ * Host side read and write pointer, they are free running and
+ * have little relation to the QCP pointers.
+ */
+ uint32_t wr_p;
+ uint32_t rd_p;
+
+ /** The size of the queue in number of descriptors. */
+ uint32_t tx_count;
+
+ uint32_t tx_free_thresh;
+
/** The index of the QCP queue relative to the TX queue BAR. */
uint32_t tx_qcidx;
@@ -72,8 +69,8 @@ struct nfp_net_txq {
uint16_t data_pending;
/**
- * At this point 58 bytes have been used for all the fields in the
- * TX critical path. We have room for 6 bytes and still all placed
+ * At this point 50 bytes have been used for all the fields in the
+ * TX critical path. We have room for 14 bytes and still all placed
* in a cache line.
*/
uint64_t dma;
@@ -83,6 +80,9 @@ struct nfp_net_txq {
/** TX pointer ring write back area DMA address */
uint64_t txrwb_dma;
+
+ /** Point to the base of the queue structure on the NFP. */
+ uint8_t *qcp_q;
} __rte_aligned(64);
/* RX and freelist descriptor format */
@@ -145,19 +145,6 @@ struct nfp_net_rxq {
*/
uint8_t *qcp_fl;
- /**
- * Host side read pointer, free running and have little relation
- * to the QCP pointers. It is where the driver start reading
- * descriptors for newly arrive packets from.
- */
- uint32_t rd_p;
-
- /**
- * The index of the QCP queue relative to the RX queue BAR
- * used for the freelist.
- */
- uint32_t fl_qcidx;
-
/**
* For each buffer placed on the freelist, record the
* associated mbuf.
@@ -177,6 +164,14 @@ struct nfp_net_rxq {
* safely copied to the mbuf using the NFP_NET_RX_OFFSET.
*/
struct rte_mempool *mem_pool;
+
+ /**
+ * Host side read pointer, free running and have little relation
+ * to the QCP pointers. It is where the driver start reading
+ * descriptors for newly arrive packets from.
+ */
+ uint32_t rd_p;
+
uint16_t mbuf_size;
/**
@@ -186,9 +181,6 @@ struct nfp_net_rxq {
uint16_t rx_free_thresh;
uint16_t nb_rx_hold;
- /** The size of the queue in number of descriptors */
- uint16_t rx_count;
-
/** Referencing dev->data->port_id */
uint16_t port_id;
@@ -196,11 +188,20 @@ struct nfp_net_rxq {
uint16_t qidx;
/**
- * At this point 60 bytes have been used for all the fields in the
- * RX critical path. We have room for 4 bytes and still all placed
+ * At this point 54 bytes have been used for all the fields in the
+ * RX critical path. We have room for 10 bytes and still all placed
* in a cache line.
*/
+ /** The size of the queue in number of descriptors */
+ uint16_t rx_count;
+
+ /**
+ * The index of the QCP queue relative to the RX queue BAR
+ * used for the freelist.
+ */
+ uint32_t fl_qcidx;
+
/** DMA address of the queue */
uint64_t dma;
} __rte_aligned(64);