Re: TCP stack behaviour question

[Andi Kleen]

> # man 7 ip
> ..
>                Note that TCP has no error queue; MSG_ERRQUEUE is
> illegal on SOCK_STREAM sockets.  Thus all errors are returned by
> socket function return or SO_ERROR only.
> 
> Maybe the man page is wrong? That's from my FC 3 install.

The sentence is correct, but TCP has a IP_RECVERR that works
differently without a queue. Basically it doesn't delay the error 
reporting for incoming ICMPs to the last retransmit, but reports
them immediately. This is documented in tcp(7)

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/