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Provide a way for the application (e.g. the afs filesystem) to store private data on the rxrpc_peer structs for later retrieval via the call object. This will allow afs to store a pointer to the afs_server object on the rxrpc_peer struct, thereby obviating the need for afs to keep lookup tables by which it can associate an incoming call with server that transmitted it. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: Jakub Kicinski <kuba@kernel.org> cc: "David S. Miller" <davem@davemloft.net> cc: Eric Dumazet <edumazet@google.com> cc: Paolo Abeni <pabeni@redhat.com> cc: Simon Horman <horms@kernel.org> cc: linux-afs@lists.infradead.org cc: linux-fsdevel@vger.kernel.org cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20250224234154.2014840-13-dhowells@redhat.com/ # v1 Link: https://lore.kernel.org/r/20250310094206.801057-9-dhowells@redhat.com/ # v4
88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* RxRPC kernel service interface definitions
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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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#ifndef _NET_RXRPC_H
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#define _NET_RXRPC_H
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#include <linux/rxrpc.h>
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#include <linux/ktime.h>
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struct key;
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struct sock;
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struct socket;
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struct rxrpc_call;
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struct rxrpc_peer;
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enum rxrpc_abort_reason;
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enum rxrpc_interruptibility {
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RXRPC_INTERRUPTIBLE, /* Call is interruptible */
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RXRPC_PREINTERRUPTIBLE, /* Call can be cancelled whilst waiting for a slot */
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RXRPC_UNINTERRUPTIBLE, /* Call should not be interruptible at all */
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};
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/*
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* Debug ID counter for tracing.
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*/
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extern atomic_t rxrpc_debug_id;
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typedef void (*rxrpc_notify_rx_t)(struct sock *, struct rxrpc_call *,
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unsigned long);
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typedef void (*rxrpc_notify_end_tx_t)(struct sock *, struct rxrpc_call *,
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unsigned long);
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typedef void (*rxrpc_notify_new_call_t)(struct sock *, struct rxrpc_call *,
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unsigned long);
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typedef void (*rxrpc_discard_new_call_t)(struct rxrpc_call *, unsigned long);
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typedef void (*rxrpc_user_attach_call_t)(struct rxrpc_call *, unsigned long);
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void rxrpc_kernel_new_call_notification(struct socket *,
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rxrpc_notify_new_call_t,
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rxrpc_discard_new_call_t);
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struct rxrpc_call *rxrpc_kernel_begin_call(struct socket *sock,
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struct rxrpc_peer *peer,
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struct key *key,
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unsigned long user_call_ID,
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s64 tx_total_len,
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u32 hard_timeout,
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gfp_t gfp,
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rxrpc_notify_rx_t notify_rx,
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u16 service_id,
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bool upgrade,
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enum rxrpc_interruptibility interruptibility,
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unsigned int debug_id);
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int rxrpc_kernel_send_data(struct socket *, struct rxrpc_call *,
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struct msghdr *, size_t,
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rxrpc_notify_end_tx_t);
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int rxrpc_kernel_recv_data(struct socket *, struct rxrpc_call *,
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struct iov_iter *, size_t *, bool, u32 *, u16 *);
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bool rxrpc_kernel_abort_call(struct socket *, struct rxrpc_call *,
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u32, int, enum rxrpc_abort_reason);
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void rxrpc_kernel_shutdown_call(struct socket *sock, struct rxrpc_call *call);
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void rxrpc_kernel_put_call(struct socket *sock, struct rxrpc_call *call);
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struct rxrpc_peer *rxrpc_kernel_lookup_peer(struct socket *sock,
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struct sockaddr_rxrpc *srx, gfp_t gfp);
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void rxrpc_kernel_put_peer(struct rxrpc_peer *peer);
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struct rxrpc_peer *rxrpc_kernel_get_peer(struct rxrpc_peer *peer);
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struct rxrpc_peer *rxrpc_kernel_get_call_peer(struct socket *sock, struct rxrpc_call *call);
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const struct sockaddr_rxrpc *rxrpc_kernel_remote_srx(const struct rxrpc_peer *peer);
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const struct sockaddr *rxrpc_kernel_remote_addr(const struct rxrpc_peer *peer);
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unsigned long rxrpc_kernel_set_peer_data(struct rxrpc_peer *peer, unsigned long app_data);
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unsigned long rxrpc_kernel_get_peer_data(const struct rxrpc_peer *peer);
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unsigned int rxrpc_kernel_get_srtt(const struct rxrpc_peer *);
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int rxrpc_kernel_charge_accept(struct socket *, rxrpc_notify_rx_t,
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rxrpc_user_attach_call_t, unsigned long, gfp_t,
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unsigned int);
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void rxrpc_kernel_set_tx_length(struct socket *, struct rxrpc_call *, s64);
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bool rxrpc_kernel_check_life(const struct socket *, const struct rxrpc_call *);
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u32 rxrpc_kernel_get_epoch(struct socket *, struct rxrpc_call *);
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void rxrpc_kernel_set_max_life(struct socket *, struct rxrpc_call *,
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unsigned long);
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int rxrpc_sock_set_min_security_level(struct sock *sk, unsigned int val);
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int rxrpc_sock_set_security_keyring(struct sock *, struct key *);
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#endif /* _NET_RXRPC_H */
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