[PATCH v2] net/ice: fix data length check

[Qi Zhang]

In TSO, It is possible mbuf->data_len exceed mtu.
Fixed the incorrect data length check in ice_prep_pkts.

Fixes: ccf33dccf7aa ("net/ice: check illegal packet sizes")
Cc: stable at dpdk.org

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
---
v2:
- fix build warning

 drivers/net/ice/ice_rxtx.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index 560c1a4af7..cd0e61c85f 100644
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -3669,9 +3669,6 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
 	int i, ret;
 	uint64_t ol_flags;
 	struct rte_mbuf *m;
-	struct ice_tx_queue *txq = tx_queue;
-	struct rte_eth_dev *dev = &rte_eth_devices[txq->port_id];
-	uint16_t max_frame_size = dev->data->mtu + ICE_ETH_OVERHEAD;
 
 	for (i = 0; i < nb_pkts; i++) {
 		m = tx_pkts[i];
@@ -3690,7 +3687,7 @@ ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
 
 		/* check the data_len in mbuf */
 		if (m->data_len < ICE_TX_MIN_PKT_LEN ||
-			m->data_len > max_frame_size) {
+			m->data_len > ICE_FRAME_SIZE_MAX) {
 			rte_errno = EINVAL;
 			PMD_DRV_LOG(ERR, "INVALID mbuf: bad data_len=[%hu]", m->data_len);
 			return i;
-- 
2.31.1