Fix to substract the macsec sectag size from port MTU during Initiali…

…zePort (sonic-net#2789)
theasianpianist · Jul 20, 2023 · ae06a11 · ae06a11
1 parent 6b25943
commit ae06a11
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/orchagent/portsorch.cpp b/orchagent/portsorch.cpp
@@ -1200,7 +1200,8 @@ bool PortsOrch::getPortMtu(const Port& port, sai_uint32_t &mtu)
 
     mtu = attr.value.u32 - (uint32_t)(sizeof(struct ether_header) + FCS_LEN + VLAN_TAG_LEN);
 
-    if (isMACsecPort(port.m_port_id))
+    /* Reduce the default MTU got from ASIC by MAX_MACSEC_SECTAG_SIZE */
+    if (mtu > MAX_MACSEC_SECTAG_SIZE)
     {
         mtu -= MAX_MACSEC_SECTAG_SIZE;
     }