commit c0a08cadee9161554246f707eaf24f782086914d
author Mohammed Hawari <mohammed@hawari.fr> Fri May 13 09:45:12 2022 +0200
committer Mohammed HAWARI <momohawari@gmail.com> Fri May 13 09:35:13 2022 +0000
tree 0870aaacba9b200e2a0db99ef6dd5d8af683ab40
parent d0e0e06984f0ac0c26129484708c10a66f2d6ab5

dpdk: fix overflow in mtu arithmetic

When the driver's max_rx_pktlen is >= 65536, max_supported_frame_size
overflows and queue creation fails.

Change-Id: If78707cb698adf8619ec44a852dd05d570917577
Signed-off-by: Mohammed Hawari <mohammed@hawari.fr>
Type: fix

src/plugins/dpdk/device/common.c

diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c
index a376595..b8c6edd 100644
--- a/src/plugins/dpdk/device/common.c
+++ b/src/plugins/dpdk/device/common.c
@@ -65,7 +65,7 @@
   struct rte_eth_dev_info dev_info;
   struct rte_eth_conf conf = {};
   u64 rxo, txo;
-  u16 max_frame_size;
+  u32 max_frame_size;
   int rv;
   int j;
 

src/plugins/dpdk/device/dpdk.h

diff --git a/src/plugins/dpdk/device/dpdk.h b/src/plugins/dpdk/device/dpdk.h
index 008c82d..02cf681 100644
--- a/src/plugins/dpdk/device/dpdk.h
+++ b/src/plugins/dpdk/device/dpdk.h
@@ -202,7 +202,7 @@
   u8 *default_mac_address;
 
   /* maximum supported max frame size */
-  u16 max_supported_frame_size;
+  u32 max_supported_frame_size;
 
   /* due to lack of API to get ethernet max_frame_size we store information
    * deducted from device info */