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From: Leyi Rong <leyi.rong@intel.com>
To: qi.z.zhang@intel.com,
konstantin.ananyev@intel.com
Cc: dev@dpdk.org,
Leyi Rong <leyi.rong@intel.com>
Date: Mon, 19 Apr 2021 16:36:22 +0800
Message-Id: <20210419083622.83717-1-leyi.rong@intel.com>
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References: <20210331085345.6290-1-leyi.rong@intel.com>
Subject: [dpdk-dev] [PATCH v2] net/i40e: add Tx preparation for simple Tx
data path
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Introduce i40e_simple_prep_pkts() as the preparation function for
simple Tx data path, as it's for sanity check for simple Tx.
Suggested-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Leyi Rong <leyi.rong@intel.com>
---
drivers/net/i40e/i40e_rxtx.c | 42 +++++++++++++++++++++++++++++++++++-
drivers/net/i40e/i40e_rxtx.h | 2 ++
2 files changed, 43 insertions(+), 1 deletion(-)
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 3c7686c3f4..282eb5924b 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -1479,6 +1479,46 @@ i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
return nb_tx;
}
+/*********************************************************************
+ *
+ * TX simple prep functions
+ *
+ **********************************************************************/
+uint16_t
+i40e_simple_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ int i;
+ uint64_t ol_flags;
+ struct rte_mbuf *m;
+ struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
+
+ for (i = 0; i < nb_pkts; i++) {
+ m = tx_pkts[i];
+ ol_flags = m->ol_flags;
+
+ if (!(txq->offloads ==
+ (txq->offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE) &&
+ m->nb_segs == 1)) {
+ rte_errno = EINVAL;
+ return i;
+ }
+
+ if (ol_flags & I40E_TX_OFFLOAD_NOTSUP_MASK) {
+ rte_errno = ENOTSUP;
+ return i;
+ }
+
+ /* check the size of packet */
+ if (m->pkt_len < I40E_TX_MIN_PKT_LEN ||
+ m->pkt_len > I40E_FRAME_SIZE_MAX) {
+ rte_errno = EINVAL;
+ return i;
+ }
+ }
+ return i;
+}
+
/*********************************************************************
*
* TX prep functions
@@ -3412,7 +3452,7 @@ i40e_set_tx_function(struct rte_eth_dev *dev)
PMD_INIT_LOG(DEBUG, "Simple tx finally be used.");
dev->tx_pkt_burst = i40e_xmit_pkts_simple;
}
- dev->tx_pkt_prepare = NULL;
+ dev->tx_pkt_prepare = i40e_simple_prep_pkts;
} else {
PMD_INIT_LOG(DEBUG, "Xmit tx finally be used.");
dev->tx_pkt_burst = i40e_xmit_pkts;
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
index 3447a58c82..5ccf5773e8 100644
--- a/drivers/net/i40e/i40e_rxtx.h
+++ b/drivers/net/i40e/i40e_rxtx.h
@@ -208,6 +208,8 @@ uint16_t i40e_recv_scattered_pkts(void *rx_queue,
uint16_t i40e_xmit_pkts(void *tx_queue,
struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
+uint16_t i40e_simple_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts);
uint16_t i40e_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
int i40e_tx_queue_init(struct i40e_tx_queue *txq);
--
2.17.1