From: Evgeniy Polyakov <[EMAIL PROTECTED]> Date: Wed, 9 May 2007 13:34:43 +0400
> On Tue, May 08, 2007 at 11:48:28PM -0700, David Miller ([EMAIL PROTECTED]) > wrote: > > One thing that will need to be adjust for current tree is the UDP > > hashing mechanism. But as far as I can tell your code should be able > > to handle the new scheme (we now hash UDP by saddr+port when > > possible, and this reminds me that IPV6 is broken and needs some > > repairs). > > Yes, udp with multicast can be a problem, but it can be solved exactly > the same way I implemented netlink broadcast (simple solution) - > multicast sockets are placed into own list/hash table/trie with special > bit in key/whatever and accessed when needed. Actually, I am not talking about multicast. :) In 2.6.22 what happens now in UDP is that if a non-wildcard rcv_saddr is specified, we try to hash using the rcv_saddr and the port. But when binding we have to check first if an existing port+wildcard bind exists. See __udp_lib_get_port() in Linus's current tree. > > What exactly does the 'stages' arg mean? Is this a method to handle > > partially bound sockets? > > It is a fallback to select a listening socket, which has remote > addr/port as zero, so when socket it selected from tree, lookup wants to > first get established socket with given remote identity and if this > fails, it tries to select a wildcard one. This kind of logic also has implications for UDP. :-) - 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
