Thomas Graf wrote:
Anyways, your idea of having 32bit identifiers rather than a bitmask makes sense to me, however I think we should not lose the ability to do multicasting for event notifications so we might need a slightly more complex solution. I guess Patrick is taking care of this though.
Yes, the patches are almost ready but I could use some ideas for one remaining problem. The idea was that a subsystem which sends broadcast messages can specify how many groups are present, probably as a parameter to netlink_kernel_create. This information is needed to properly size the groups mask in struct netlink_sock (this mask is still needed). The problem is that sockets can bind to groups before a kernel socket is created, or in the case of a userspace implemented protocol, none is ever created. To solve this we could forbid binding to groups before either a kernel socket is created or userspace has registered how many groups are present using setsockopt. The questions regarding this are if the bind-change could cause problems for userspace and whether we should take care of userspace implemented protocols at all or simply return -ESOCKTNOSUPPORT in netlink_create if no kernel socket exists. - 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
