From: Mohammed Hawari <mohammed@hawari.fr>
Date: Fri, 13 May 2022 07:45:12 +0000 (+0200)
Subject: dpdk: fix overflow in mtu arithmetic
X-Git-Tag: v22.10-rc0~29
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=c0a08cadee9161554246f707eaf24f782086914d;p=vpp.git

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
---

diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c
index a37659508dc..b8c6eddd34b 100644
--- a/src/plugins/dpdk/device/common.c
+++ b/src/plugins/dpdk/device/common.c
@@ -65,7 +65,7 @@ dpdk_device_setup (dpdk_device_t * xd)
   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;
 
diff --git a/src/plugins/dpdk/device/dpdk.h b/src/plugins/dpdk/device/dpdk.h
index 008c82df7b0..02cf6812d43 100644
--- a/src/plugins/dpdk/device/dpdk.h
+++ b/src/plugins/dpdk/device/dpdk.h
@@ -202,7 +202,7 @@ typedef struct
   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 */