tree 9240006737c1cc4911a705edb6b1f8b14c52ae9a
parent d338a0a1a95d021e9654b4c80ee64fb4d3e40827
author Guy Harris <guy@alum.mit.edu> 1556058362 -0700
committer Guy Harris <guy@alum.mit.edu> 1556058362 -0700

Handle switch tags more cleanly.

Have the switch tag dissectors handle *only* the switch tag, not
anything else in the Ethernet header.

Have a routine ether_print_switch_tag() that takes a pointer to a
routine to dissect the switch tag, and a switch tag length, as an
argument, and have a common Ethernet dissection routine called by
ether_print_switch_tag() and by ether_print(), passing a null pointer
for the switch tag dissector and 0 for the switch tag length.

Dissect the switch tag after the MAC addresses, if there's a non-null
switch tag routine dissector pointer.

Clean up the processing logic in the common Ethernet dissection code -
have a loop to process VLAN tags, if any, and, when it's done, handle
frames with a length field, frames with a regular type field, and Alteon
jumbo frames.