diff mbox series

net/enic: fix the size check in Tx prepare handler

Message ID 20181113153810.29409-1-hyonkim@cisco.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers
Series net/enic: fix the size check in Tx prepare handler |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK
ci/mellanox-Performance-Testing success Performance Testing PASS
ci/intel-Performance-Testing success Performance Testing PASS

Commit Message

Hyong Youb Kim (hyonkim) Nov. 13, 2018, 3:38 p.m. UTC 
  The current code wrongly assumes that packets are non-TSO and ends up
rejecting large TSO packets. Check non-TSO and TSO max packet sizes
separately.

Fixes: 5a12c387405a ("net/enic: check maximum packet size in Tx prepare handler")
Cc: stable@dpdk.org

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
---
 drivers/net/enic/enic_rxtx.c | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

Comments

Ferruh Yigit Nov. 13, 2018, 6:02 p.m. UTC | #1 
On 11/13/2018 3:38 PM, Hyong Youb Kim wrote:
> The current code wrongly assumes that packets are non-TSO and ends up
> rejecting large TSO packets. Check non-TSO and TSO max packet sizes
> separately.
> 
> Fixes: 5a12c387405a ("net/enic: check maximum packet size in Tx prepare handler")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
> Reviewed-by: John Daley <johndale@cisco.com>

Applied to dpdk-next-net/master, thanks.
diff mbox series

Patch

diff --git a/drivers/net/enic/enic_rxtx.c b/drivers/net/enic/enic_rxtx.c
index 5189ee635..0aadd3426 100644
--- a/drivers/net/enic/enic_rxtx.c
+++ b/drivers/net/enic/enic_rxtx.c
@@ -393,11 +393,22 @@  uint16_t enic_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
 
 	for (i = 0; i != nb_pkts; i++) {
 		m = tx_pkts[i];
-		if (unlikely(m->pkt_len > ENIC_TX_MAX_PKT_SIZE)) {
-			rte_errno = EINVAL;
-			return i;
-		}
 		ol_flags = m->ol_flags;
+		if (!(ol_flags & PKT_TX_TCP_SEG)) {
+			if (unlikely(m->pkt_len > ENIC_TX_MAX_PKT_SIZE)) {
+				rte_errno = EINVAL;
+				return i;
+			}
+		} else {
+			uint16_t header_len;
+
+			header_len = m->l2_len + m->l3_len + m->l4_len;
+			if (m->tso_segsz + header_len > ENIC_TX_MAX_PKT_SIZE) {
+				rte_errno = EINVAL;
+				return i;
+			}
+		}
+
 		if (ol_flags & wq->tx_offload_notsup_mask) {
 			rte_errno = ENOTSUP;
 			return i;