commit f888e1c29d15df51a879034cf4f2a7598424364d
author Zhiyong Yang <zhiyong.yang@intel.com> Thu May 24 05:24:29 2018 -0400
committer Damjan Marion <dmarion.lists@gmail.com> Sat May 26 18:57:47 2018 +0000
tree a69e9dbd1c52e232117d18516dbdc5ed11604217
parent ca1c8f3e782dc68a51aa2792771d9b4aac696ddd

dpdk: enable RX for no-multi-seg

The option no-multi-seg doesn't take effect for RX since MTU
which is too large is passed to DPDK lib, Which causes PMDs
are running XXX_scattered_rx function. The patch fixes the issue.

Change-Id: I91a6fb23fd118e872c8a52a6c35c36a86cb2c02b
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>

src/plugins/dpdk/device/init.c

diff --git a/src/plugins/dpdk/device/init.c b/src/plugins/dpdk/device/init.c
index 23d4d46..1f17c61 100755
--- a/src/plugins/dpdk/device/init.c
+++ b/src/plugins/dpdk/device/init.c
@@ -37,6 +37,8 @@
 
 #include <dpdk/device/dpdk_priv.h>
 
+#define ETHER_MAX_LEN   1518  /**< Maximum frame len, including CRC. */
+
 dpdk_main_t dpdk_main;
 dpdk_config_main_t dpdk_config_main;
 
@@ -693,6 +695,9 @@
       else
 	clib_warning ("hi NULL");
 
+      if (dm->conf->no_multi_seg)
+	mtu = mtu > ETHER_MAX_LEN ? ETHER_MAX_LEN : mtu;
+
       rte_eth_dev_set_mtu (xd->device_index, mtu);
     }