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Subject[PATCH 0/9] AF_RXRPC socket family and AFS rewrite
Date

The first of these patches together provide secure client-side RxRPC
connectivity as a Linux kernel socket family. Only the RxRPC transport/session
side is supplied - the presentation side (marshalling the data) is left to the
client. Copies of the patches can be found here:

http://people.redhat.com/~dhowells/rxrpc/series
http://people.redhat.com/~dhowells/rxrpc/01-crypto-kernel-buff.diff
http://people.redhat.com/~dhowells/rxrpc/02-move-skb-generic.diff
http://people.redhat.com/~dhowells/rxrpc/03-timers.diff
http://people.redhat.com/~dhowells/rxrpc/04-keys.diff
http://people.redhat.com/~dhowells/rxrpc/05-af_rxrpc.diff

Further patches make the in-kernel AFS filesystem use AF_RXRPC and delete the
old RxRPC implementation:

http://people.redhat.com/~dhowells/rxrpc/06-afs-cleanup.diff
http://people.redhat.com/~dhowells/rxrpc/07-af_rxrpc-kernel.diff
http://people.redhat.com/~dhowells/rxrpc/08-af_rxrpc-afs.diff
http://people.redhat.com/~dhowells/rxrpc/09-af_rxrpc-delete-old.diff

The userspace access methods make use of the control data passed to/by
sendmsg() and recvmsg(). See the three simple test programs:

http://people.redhat.com/~dhowells/rxrpc/klog.c
http://people.redhat.com/~dhowells/rxrpc/rxrpc.c
http://people.redhat.com/~dhowells/rxrpc/listen.c

TODO:

(*) Make certain parameters (such as connection timeouts) userspace
configurable.

(*) Make userspace utilities use it; librxrpc.

(*) Userspace documentation.

(*) KerberosV security.

Changes:

(*) SOCK_RPC has been removed. SOCK_DGRAM is now used instead.

(*) I've add a facility whereby calls can be made to destinations other than
the connect() address of a client socket by making use of msg_name in the
msghdr struct when using sendmsg() to send the first data packet of a
call. Indeed, a client socket need not be connected before being used
so.

(*) I've also added a facility whereby client calls may also be made on
server sockets, again by using msg_name in the msghdr struct. In such a
case, the server's local transport endpoint is used.

(*) I've made the write buffer space check available to various callers
(sk_write_space) and implemented poll support.

(*) Rewrote rxrpc_recvmsg(). It now concatenates adjacent data messages from
the same call when delivering them.

(*) Updated the documentation to include notes on recvmsg, cover control
messages and cover SOL_RXRPC-level socket options.

(*) Provided an in-kernel interface to give in-kernel utilities easier access
to the facility.

(*) Made fs/afs/ use it.

(*) Deleted the old contents of net/rxrpc/.

David
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