Hallo, While looking for something else in tcp_output.c I noticed that MTU probing seems to be only done in tcp_write_xmit (when packets come directly from process context), but not via the timer driven timer retransmit path (tcp_retransmit_skb). Is that intentional? It looks quite weird. I would normally assume PMTU blackholes get usually detected on retransmit timeouts. Or do I miss something?
You seem to have assumed interrupt context at least because tcp_mtu_probe() uses GFP_ATOMIC which is only needed for interrupts. Currently it is only called in process context I think. -Andi -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
