mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 21:21:41 +00:00
72904d7b9b
Change rxrpc's API such that:
(1) A new function, rxrpc_kernel_lookup_peer(), is provided to look up an
rxrpc_peer record for a remote address and a corresponding function,
rxrpc_kernel_put_peer(), is provided to dispose of it again.
(2) When setting up a call, the rxrpc_peer object used during a call is
now passed in rather than being set up by rxrpc_connect_call(). For
afs, this meenat passing it to rxrpc_kernel_begin_call() rather than
the full address (the service ID then has to be passed in as a
separate parameter).
(3) A new function, rxrpc_kernel_remote_addr(), is added so that afs can
get a pointer to the transport address for display purposed, and
another, rxrpc_kernel_remote_srx(), to gain a pointer to the full
rxrpc address.
(4) The function to retrieve the RTT from a call, rxrpc_kernel_get_srtt(),
is then altered to take a peer. This now returns the RTT or -1 if
there are insufficient samples.
(5) Rename rxrpc_kernel_get_peer() to rxrpc_kernel_call_get_peer().
(6) Provide a new function, rxrpc_kernel_get_peer(), to get a ref on a
peer the caller already has.
This allows the afs filesystem to pin the rxrpc_peer records that it is
using, allowing faster lookups and pointer comparisons rather than
comparing sockaddr_rxrpc contents. It also makes it easier to get hold of
the RTT. The following changes are made to afs:
(1) The addr_list struct's addrs[] elements now hold a peer struct pointer
and a service ID rather than a sockaddr_rxrpc.
(2) When displaying the transport address, rxrpc_kernel_remote_addr() is
used.
(3) The port arg is removed from afs_alloc_addrlist() since it's always
overridden.
(4) afs_merge_fs_addr4() and afs_merge_fs_addr6() do peer lookup and may
now return an error that must be handled.
(5) afs_find_server() now takes a peer pointer to specify the address.
(6) afs_find_server(), afs_compare_fs_alists() and afs_merge_fs_addr[46]{}
now do peer pointer comparison rather than address comparison.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/* RxRPC kernel service interface definitions
|
|
*
|
|
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*/
|
|
|
|
#ifndef _NET_RXRPC_H
|
|
#define _NET_RXRPC_H
|
|
|
|
#include <linux/rxrpc.h>
|
|
#include <linux/ktime.h>
|
|
|
|
struct key;
|
|
struct sock;
|
|
struct socket;
|
|
struct rxrpc_call;
|
|
struct rxrpc_peer;
|
|
enum rxrpc_abort_reason;
|
|
|
|
enum rxrpc_interruptibility {
|
|
RXRPC_INTERRUPTIBLE, /* Call is interruptible */
|
|
RXRPC_PREINTERRUPTIBLE, /* Call can be cancelled whilst waiting for a slot */
|
|
RXRPC_UNINTERRUPTIBLE, /* Call should not be interruptible at all */
|
|
};
|
|
|
|
/*
|
|
* Debug ID counter for tracing.
|
|
*/
|
|
extern atomic_t rxrpc_debug_id;
|
|
|
|
typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
|
|
unsigned long);
|
|
typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
|
|
unsigned long);
|
|
typedef void (*rxrpc_notify_new_call_t)(struct sock *, struct rxrpc_call *,
|
|
unsigned long);
|
|
typedef void (*rxrpc_discard_new_call_t)(struct rxrpc_call *, unsigned long);
|
|
typedef void (*rxrpc_user_attach_call_t)(struct rxrpc_call *, unsigned long);
|
|
|
|
void rxrpc_kernel_new_call_notification(struct socket *,
|
|
rxrpc_notify_new_call_t,
|
|
rxrpc_discard_new_call_t);
|
|
struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
|
|
struct rxrpc_peer *peer,
|
|
struct key *key,
|
|
unsigned long user_call_ID,
|
|
s64 tx_total_len,
|
|
u32 hard_timeout,
|
|
gfp_t gfp,
|
|
rxrpc_notify_rx_t notify_rx,
|
|
u16 service_id,
|
|
bool upgrade,
|
|
enum rxrpc_interruptibility interruptibility,
|
|
unsigned int debug_id);
|
|
int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
|
|
struct msghdr *, size_t,
|
|
rxrpc_notify_end_tx_t);
|
|
int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
|
|
struct iov_iter *, size_t *, bool, u32 *, u16 *);
|
|
bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
|
|
u32, int, enum rxrpc_abort_reason);
|
|
void rxrpc_kernel_shutdown_call(struct socket *sock, struct rxrpc_call *call);
|
|
void rxrpc_kernel_put_call(struct socket *sock, struct rxrpc_call *call);
|
|
struct rxrpc_peer *rxrpc_kernel_lookup_peer(struct socket *sock,
|
|
struct sockaddr_rxrpc *srx, gfp_t gfp);
|
|
void rxrpc_kernel_put_peer(struct rxrpc_peer *peer);
|
|
struct rxrpc_peer *rxrpc_kernel_get_peer(struct rxrpc_peer *peer);
|
|
struct rxrpc_peer *rxrpc_kernel_get_call_peer(struct socket *sock, struct rxrpc_call *call);
|
|
const struct sockaddr_rxrpc *rxrpc_kernel_remote_srx(const struct rxrpc_peer *peer);
|
|
const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer);
|
|
unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *);
|
|
int rxrpc_kernel_charge_accept(struct socket *, rxrpc_notify_rx_t,
|
|
rxrpc_user_attach_call_t, unsigned long, gfp_t,
|
|
unsigned int);
|
|
void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
|
|
bool rxrpc_kernel_check_life(const struct socket *, const struct rxrpc_call *);
|
|
u32 rxrpc_kernel_get_epoch(struct socket *, struct rxrpc_call *);
|
|
void rxrpc_kernel_set_max_life(struct socket *, struct rxrpc_call *,
|
|
unsigned long);
|
|
|
|
int rxrpc_sock_set_min_security_level(struct sock *sk, unsigned int val);
|
|
int rxrpc_sock_set_security_keyring(struct sock *, struct key *);
|
|
|
|
#endif /* _NET_RXRPC_H */
|