Hi all,
Squid currently does not make a check for the TOS values used in squid
configuration file. Squid will accept 8bit numbers as TOS values, however:
1) TOS values with 1st ad 2nd bit set can not be used. These bits used
by the ECN. For Linux if someone try to set the 0x23 value as TOS value
(which sets 1st and 1nd bits), the 0x20 will be used instead, without
any warn for the user.
2) Some of the TOS values are already reserved for example those which
are reserved from RFC2597.
The above may confuse squid users.
Maybe it is not bad idea to:
- Warn users when try to use TOS value which uses the ECN bits
- Warn users when try to use TOS values which are not reserved. The
user will know that this value is free for use.
Opinions?
