[dpdk-dev] [PATCH] ethdev: convert Tx offloads to Tx queue config

[Qi Zhang]

Tx offload will be converted to txq_flags automatically during
rte_eth_dev_info_get and rte_eth_tx_queue_info_get. So PMD can
clean the code to get rid of txq_flags at all while keep old APP
not be impacted.

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
 lib/librte_ethdev/rte_ethdev.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index e5605242d..a357ee09f 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -1516,6 +1516,30 @@ rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
 }
 
 /**
+ * Convert from tx offloads to txq_flags.
+ */
+static void
+rte_eth_convert_tx_offload(const uint64_t tx_offloads, uint32_t *txq_flags)
+{
+	uint32_t flags = 0;
+
+	if (!(tx_offloads & DEV_TX_OFFLOAD_MULTI_SEGS))
+		flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
+	if (!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT))
+		flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
+	if (!(tx_offloads & DEV_TX_OFFLOAD_SCTP_CKSUM))
+		flags |= ETH_TXQ_FLAGS_NOXSUMSCTP;
+	if (!(tx_offloads & DEV_TX_OFFLOAD_UDP_CKSUM))
+		flags |= ETH_TXQ_FLAGS_NOXSUMUDP;
+	if (!(tx_offloads & DEV_TX_OFFLOAD_TCP_CKSUM))
+		flags |= ETH_TXQ_FLAGS_NOXSUMTCP;
+	if (tx_offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
+		flags |= ETH_TXQ_FLAGS_NOREFCOUNT | ETH_TXQ_FLAGS_NOMULTMEMP;
+
+	*txq_flags = flags;
+}
+
+/**
  * A conversion function from txq_flags API.
  */
 static void
@@ -2359,6 +2383,7 @@ void
 rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info)
 {
 	struct rte_eth_dev *dev;
+	struct rte_eth_txconf *txconf;
 	const struct rte_eth_desc_lim lim = {
 		.nb_max = UINT16_MAX,
 		.nb_min = 0,
@@ -2380,6 +2405,9 @@ rte_eth_dev_info_get(uint16_t port_id, struct rte_eth_dev_info *dev_info)
 	dev_info->nb_tx_queues = dev->data->nb_tx_queues;
 
 	dev_info->dev_flags = &dev->data->dev_flags;
+	txconf = &dev_info->default_txconf;
+	/* convert offload to txq_flags to support legacy app */
+	rte_eth_convert_tx_offload(txconf->offloads, &txconf->txq_flags);
 }
 
 int
@@ -3799,6 +3827,7 @@ rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
 	struct rte_eth_txq_info *qinfo)
 {
 	struct rte_eth_dev *dev;
+	struct rte_eth_txconf *txconf = &qinfo->conf;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
 
@@ -3815,6 +3844,9 @@ rte_eth_tx_queue_info_get(uint16_t port_id, uint16_t queue_id,
 
 	memset(qinfo, 0, sizeof(*qinfo));
 	dev->dev_ops->txq_info_get(dev, queue_id, qinfo);
+	/* convert offload to txq_flags to support legacy app */
+	rte_eth_convert_tx_offload(txconf->offloads, &txconf->txq_flags);
+
 	return 0;
 }
 
-- 
2.13.6