commit f7f26e5b328617ae6527fa05e4cb7ab23a283045
author Alok Mishra <almishra@marvell.com> Fri Apr 26 15:45:49 2024 +0530
committer Damjan Marion <dmarion@0xa5.net> Wed Aug 21 11:54:29 2024 +0000
tree 4a925e3210c5c9459ef606026a77d8ccb3487443
parent e00ce39714d4c6b9d107f6de2b8cf440713e3cf5

octeon: add support for max_rx_frame_size update

This patch adds capability to update max_rx_frame_size on octeon
port.
Initial MTU value is being set in the "oct_port_start", which is
invoked every time the Ethernet interface is brought up, thus
overwriting any MTU value set by VPP CLI.
Moved the MTU initialization to "oct_port_init" to address this.

Type: feature

Change-Id: I00d0d52bc7711062cde47b8fe52e6823bb718d08
Signed-off-by: Alok Mishra <almishra@marvell.com>

src/vnet/dev/port.c

diff --git a/src/vnet/dev/port.c b/src/vnet/dev/port.c
index 5b4b8cd..df7805c 100644
--- a/src/vnet/dev/port.c
+++ b/src/vnet/dev/port.c
@@ -305,7 +305,8 @@
   switch (req->type)
     {
     case VNET_DEV_PORT_CFG_MAX_RX_FRAME_SIZE:
-      if (req->max_rx_frame_size > port->attr.max_supported_rx_frame_size)
+      if ((req->max_rx_frame_size > port->attr.max_supported_rx_frame_size) ||
+	  (req->max_rx_frame_size < ETHERNET_MIN_PACKET_BYTES))
 	return VNET_DEV_ERR_INVALID_VALUE;
       if (req->max_rx_frame_size == port->max_rx_frame_size)
 	return VNET_DEV_ERR_NO_CHANGE;