[dpdk-dev] [PATCH v2 12/15] net/enic: check maximum packet size in Tx prepare handler
John Daley
johndale at cisco.com
Fri Jun 29 11:29:41 CEST 2018
From: Hyong Youb Kim <hyonkim at cisco.com>
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 at cisco.com>
Reviewed-by: John Daley <johndale at cisco.com>
---
drivers/net/enic/enic_rxtx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/enic/enic_rxtx.c b/drivers/net/enic/enic_rxtx.c
index 7dec486fe..04a77fcb4 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;
--
2.16.2
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