[PATCH] net/tap: remove queue specific offload support

* [PATCH] net/tap: remove queue specific offload support
@ 2018-03-22 18:28 Ferruh Yigit
  2018-04-05 17:49 ` Thomas Monjalon
  2018-04-23  9:38 ` [PATCH v2] " Ferruh Yigit
  0 siblings, 2 replies; 20+ messages in thread
From: Ferruh Yigit @ 2018-03-22 18:28 UTC (permalink / raw)
  To: Pascal Mazon; +Cc: dev, Ferruh Yigit, motih, Shahaf Shuler

It is not clear if tap PMD supports queue specific offloads, removing
the related code.

Fixes: 95ae196ae10b ("net/tap: use new Rx offloads API")
Fixes: 818fe14a9891 ("net/tap: use new Tx offloads API")
Cc: motih@mellanox.com

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
Cc: Shahaf Shuler <shahafs@mellanox.com>
---
 drivers/net/tap/rte_eth_tap.c | 101 +++---------------------------------------
 1 file changed, 6 insertions(+), 95 deletions(-)

diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index c9b86a8f0..67ed9d466 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -269,33 +269,6 @@ tap_rx_offload_get_port_capa(void)
 	       DEV_RX_OFFLOAD_CRC_STRIP;
 }
 
-static uint64_t
-tap_rx_offload_get_queue_capa(void)
-{
-	return DEV_RX_OFFLOAD_SCATTER |
-	       DEV_RX_OFFLOAD_IPV4_CKSUM |
-	       DEV_RX_OFFLOAD_UDP_CKSUM |
-	       DEV_RX_OFFLOAD_TCP_CKSUM |
-	       DEV_RX_OFFLOAD_CRC_STRIP;
-}
-
-static bool
-tap_rxq_are_offloads_valid(struct rte_eth_dev *dev, uint64_t offloads)
-{
-	uint64_t port_offloads = dev->data->dev_conf.rxmode.offloads;
-	uint64_t queue_supp_offloads = tap_rx_offload_get_queue_capa();
-	uint64_t port_supp_offloads = tap_rx_offload_get_port_capa();
-
-	if ((offloads & (queue_supp_offloads | port_supp_offloads)) !=
-	    offloads)
-		return false;
-	if ((offloads & port_offloads) ^ offloads)
-		return false;
-	if ((offloads & port_supp_offloads) ^ offloads)
-		return false;
-	return true;
-}
-
 /* Callback to handle the rx burst of packets to the correct interface and
  * file descriptor(s) in a multi-queue setup.
  */
@@ -404,31 +377,6 @@ tap_tx_offload_get_port_capa(void)
 	       DEV_TX_OFFLOAD_TCP_CKSUM;
 }
 
-static uint64_t
-tap_tx_offload_get_queue_capa(void)
-{
-	return DEV_TX_OFFLOAD_MULTI_SEGS |
-	       DEV_TX_OFFLOAD_IPV4_CKSUM |
-	       DEV_TX_OFFLOAD_UDP_CKSUM |
-	       DEV_TX_OFFLOAD_TCP_CKSUM;
-}
-
-static bool
-tap_txq_are_offloads_valid(struct rte_eth_dev *dev, uint64_t offloads)
-{
-	uint64_t port_offloads = dev->data->dev_conf.txmode.offloads;
-	uint64_t queue_supp_offloads = tap_tx_offload_get_queue_capa();
-	uint64_t port_supp_offloads = tap_tx_offload_get_port_capa();
-
-	if ((offloads & (queue_supp_offloads | port_supp_offloads)) !=
-	    offloads)
-		return false;
-	/* Verify we have no conflict with port offloads */
-	if ((port_offloads ^ offloads) & port_supp_offloads)
-		return false;
-	return true;
-}
-
 static void
 tap_tx_offload(char *packet, uint64_t ol_flags, unsigned int l2_len,
 	       unsigned int l3_len)
@@ -742,12 +690,10 @@ tap_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	dev_info->min_rx_bufsize = 0;
 	dev_info->pci_dev = NULL;
 	dev_info->speed_capa = tap_dev_speed_capa();
-	dev_info->rx_queue_offload_capa = tap_rx_offload_get_queue_capa();
-	dev_info->rx_offload_capa = tap_rx_offload_get_port_capa() |
-				    dev_info->rx_queue_offload_capa;
-	dev_info->tx_queue_offload_capa = tap_tx_offload_get_queue_capa();
-	dev_info->tx_offload_capa = tap_tx_offload_get_port_capa() |
-				    dev_info->tx_queue_offload_capa;
+	dev_info->rx_offload_capa = tap_rx_offload_get_port_capa();
+	dev_info->tx_offload_capa = tap_tx_offload_get_port_capa();
+	dev_info->rx_queue_offload_capa = 0;
+	dev_info->tx_queue_offload_capa = 0;
 }
 
 static int
@@ -1063,19 +1009,6 @@ tap_rx_queue_setup(struct rte_eth_dev *dev,
 		return -1;
 	}
 
-	/* Verify application offloads are valid for our port and queue. */
-	if (!tap_rxq_are_offloads_valid(dev, rx_conf->offloads)) {
-		rte_errno = ENOTSUP;
-		RTE_LOG(ERR, PMD,
-			"%p: Rx queue offloads 0x%" PRIx64
-			" don't match port offloads 0x%" PRIx64
-			" or supported offloads 0x%" PRIx64 "\n",
-			(void *)dev, rx_conf->offloads,
-			dev->data->dev_conf.rxmode.offloads,
-			(tap_rx_offload_get_port_capa() |
-			 tap_rx_offload_get_queue_capa()));
-		return -rte_errno;
-	}
 	rxq->mp = mp;
 	rxq->trigger_seen = 1; /* force initial burst */
 	rxq->in_port = dev->data->port_id;
@@ -1134,7 +1067,7 @@ tap_tx_queue_setup(struct rte_eth_dev *dev,
 		   uint16_t tx_queue_id,
 		   uint16_t nb_tx_desc __rte_unused,
 		   unsigned int socket_id __rte_unused,
-		   const struct rte_eth_txconf *tx_conf)
+		   const struct rte_eth_txconf *tx_conf __rte_unused)
 {
 	struct pmd_internals *internals = dev->data->dev_private;
 	struct tx_queue *txq;
@@ -1144,29 +1077,7 @@ tap_tx_queue_setup(struct rte_eth_dev *dev,
 		return -1;
 	dev->data->tx_queues[tx_queue_id] = &internals->txq[tx_queue_id];
 	txq = dev->data->tx_queues[tx_queue_id];
-	/*
-	 * Don't verify port offloads for application which
-	 * use the old API.
-	 */
-	if (tx_conf != NULL &&
-	    !!(tx_conf->txq_flags & ETH_TXQ_FLAGS_IGNORE)) {
-		if (tap_txq_are_offloads_valid(dev, tx_conf->offloads)) {
-			txq->csum = !!(tx_conf->offloads &
-					(DEV_TX_OFFLOAD_IPV4_CKSUM |
-					 DEV_TX_OFFLOAD_UDP_CKSUM |
-					 DEV_TX_OFFLOAD_TCP_CKSUM));
-		} else {
-			rte_errno = ENOTSUP;
-			RTE_LOG(ERR, PMD,
-				"%p: Tx queue offloads 0x%" PRIx64
-				" don't match port offloads 0x%" PRIx64
-				" or supported offloads 0x%" PRIx64,
-				(void *)dev, tx_conf->offloads,
-				dev->data->dev_conf.txmode.offloads,
-				tap_tx_offload_get_port_capa());
-			return -rte_errno;
-		}
-	}
+
 	ret = tap_setup_queue(dev, internals, tx_queue_id, 0);
 	if (ret == -1)
 		return -1;
-- 
2.13.6

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