linux/net/rxrpc/txbuf.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* RxRPC Tx data buffering.
 *
 * Copyright (C) 2022 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#define pr_fmt(fmt) …

#include <linux/slab.h>
#include "ar-internal.h"

static atomic_t rxrpc_txbuf_debug_ids;
atomic_t rxrpc_nr_txbuf;

/*
 * Allocate and partially initialise a data transmission buffer.
 */
struct rxrpc_txbuf *rxrpc_alloc_data_txbuf(struct rxrpc_call *call, size_t data_size,
					   size_t data_align, gfp_t gfp)
{ … }

/*
 * Allocate and partially initialise an ACK packet.
 */
struct rxrpc_txbuf *rxrpc_alloc_ack_txbuf(struct rxrpc_call *call, size_t sack_size)
{ … }

void rxrpc_get_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what)
{ … }

void rxrpc_see_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what)
{ … }

static void rxrpc_free_txbuf(struct rxrpc_txbuf *txb)
{ … }

void rxrpc_put_txbuf(struct rxrpc_txbuf *txb, enum rxrpc_txbuf_trace what)
{ … }

/*
 * Shrink the transmit buffer.
 */
void rxrpc_shrink_call_tx_buffer(struct rxrpc_call *call)
{ … }