From: Hyong Youb Kim <hyonkim@cisco.com>
Date: Fri, 29 Jun 2018 09:29:41 +0000 (-0700)
Subject: net/enic: check maximum packet size in Tx prepare handler
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=5a12c387405a657aba23645fd864ac0771437fd5;p=dpdk.git

net/enic: check maximum packet size in Tx prepare handler

The default tx handler checks the maximum packet size. Check it in the
prepare handler too. WQ stops working if the app/driver tries to send
oversized packets, so these checks are unavoidable.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
---

diff --git a/drivers/net/enic/enic_rxtx.c b/drivers/net/enic/enic_rxtx.c
index 7dec486fe2..04a77fcb46 100644
--- a/drivers/net/enic/enic_rxtx.c
+++ b/drivers/net/enic/enic_rxtx.c
@@ -563,6 +563,10 @@ 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 & wq->tx_offload_notsup_mask) {
 			rte_errno = ENOTSUP;