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2341e07757
Simplify the RxRPC connect() implementation. It will just note the destination address it is given, and if a sendmsg() comes along with no address, this will be assigned as the address. No transport struct will be held internally, which will allow us to remove this later. Simplify sendmsg() also. Whilst a call is active, userspace refers to it by a private unique user ID specified in a control message. When sendmsg() sees a user ID that doesn't map to an extant call, it creates a new call for that user ID and attempts to add it. If, when we try to add it, the user ID is now registered, we now reject the message with -EEXIST. We should never see this situation unless two threads are racing, trying to create a call with the same ID - which would be an error. It also isn't required to provide sendmsg() with an address - provided the control message data holds a user ID that maps to a currently active call. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/* AF_RXRPC parameters
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_RXRPC_H
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#define _LINUX_RXRPC_H
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#include <linux/in.h>
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#include <linux/in6.h>
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/*
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* RxRPC socket address
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*/
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struct sockaddr_rxrpc {
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sa_family_t srx_family; /* address family */
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u16 srx_service; /* service desired */
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u16 transport_type; /* type of transport socket (SOCK_DGRAM) */
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u16 transport_len; /* length of transport address */
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union {
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sa_family_t family; /* transport address family */
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struct sockaddr_in sin; /* IPv4 transport address */
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struct sockaddr_in6 sin6; /* IPv6 transport address */
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} transport;
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};
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/*
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* RxRPC socket options
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*/
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#define RXRPC_SECURITY_KEY 1 /* [clnt] set client security key */
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#define RXRPC_SECURITY_KEYRING 2 /* [srvr] set ring of server security keys */
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#define RXRPC_EXCLUSIVE_CONNECTION 3 /* [clnt] use exclusive RxRPC connection */
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#define RXRPC_MIN_SECURITY_LEVEL 4 /* minimum security level */
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/*
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* RxRPC control messages
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* - If neither abort or accept are specified, the message is a data message.
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* - terminal messages mean that a user call ID tag can be recycled
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* - s/r/- indicate whether these are applicable to sendmsg() and/or recvmsg()
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*/
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#define RXRPC_USER_CALL_ID 1 /* sr: user call ID specifier */
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#define RXRPC_ABORT 2 /* sr: abort request / notification [terminal] */
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#define RXRPC_ACK 3 /* -r: [Service] RPC op final ACK received [terminal] */
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#define RXRPC_NET_ERROR 5 /* -r: network error received [terminal] */
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#define RXRPC_BUSY 6 /* -r: server busy received [terminal] */
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#define RXRPC_LOCAL_ERROR 7 /* -r: local error generated [terminal] */
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#define RXRPC_NEW_CALL 8 /* -r: [Service] new incoming call notification */
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#define RXRPC_ACCEPT 9 /* s-: [Service] accept request */
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/*
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* RxRPC security levels
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*/
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#define RXRPC_SECURITY_PLAIN 0 /* plain secure-checksummed packets only */
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#define RXRPC_SECURITY_AUTH 1 /* authenticated packets */
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#define RXRPC_SECURITY_ENCRYPT 2 /* encrypted packets */
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/*
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* RxRPC security indices
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*/
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#define RXRPC_SECURITY_NONE 0 /* no security protocol */
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#define RXRPC_SECURITY_RXKAD 2 /* kaserver or kerberos 4 */
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#define RXRPC_SECURITY_RXGK 4 /* gssapi-based */
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#define RXRPC_SECURITY_RXK5 5 /* kerberos 5 */
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#endif /* _LINUX_RXRPC_H */
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