cregit-Linux how code gets into the kernel

Release 4.11 net/rxrpc/skbuff.c

Directory: net/rxrpc
/* ar-skbuff.c: socket buffer destruction handling
 *
 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/net.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
#include "ar-internal.h"


#define select_skb_count(op) (op >= rxrpc_skb_tx_cleaned ? &rxrpc_n_tx_skbs : &rxrpc_n_rx_skbs)

/*
 * Note the allocation or reception of a socket buffer.
 */

void rxrpc_new_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); int n = atomic_inc_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); }

Contributors

PersonTokensPropCommitsCommitProp
David Howells54100.00%2100.00%
Total54100.00%2100.00%

/* * Note the re-emergence of a socket buffer from a queue or buffer. */
void rxrpc_see_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); if (skb) { int n = atomic_read(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); } }

Contributors

PersonTokensPropCommitsCommitProp
David Howells60100.00%2100.00%
Total60100.00%2100.00%

/* * Note the addition of a ref on a socket buffer. */
void rxrpc_get_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); int n = atomic_inc_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); skb_get(skb); }

Contributors

PersonTokensPropCommitsCommitProp
David Howells59100.00%2100.00%
Total59100.00%2100.00%

/* * Note the destruction of a socket buffer. */
void rxrpc_free_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); if (skb) { int n; CHECK_SLAB_OKAY(&skb->users); n = atomic_dec_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); kfree_skb(skb); } }

Contributors

PersonTokensPropCommitsCommitProp
David Howells75100.00%2100.00%
Total75100.00%2100.00%

/* * Note the injected loss of a socket buffer. */
void rxrpc_lose_skb(struct sk_buff *skb, enum rxrpc_skb_trace op) { const void *here = __builtin_return_address(0); if (skb) { int n; CHECK_SLAB_OKAY(&skb->users); n = atomic_dec_return(select_skb_count(op)); trace_rxrpc_skb(skb, op, atomic_read(&skb->users), n, here); kfree_skb(skb); } }

Contributors

PersonTokensPropCommitsCommitProp
David Howells75100.00%2100.00%
Total75100.00%2100.00%

/* * Clear a queue of socket buffers. */
void rxrpc_purge_queue(struct sk_buff_head *list) { const void *here = __builtin_return_address(0); struct sk_buff *skb; while ((skb = skb_dequeue((list))) != NULL) { int n = atomic_dec_return(select_skb_count(rxrpc_skb_rx_purged)); trace_rxrpc_skb(skb, rxrpc_skb_rx_purged, atomic_read(&skb->users), n, here); kfree_skb(skb); } }

Contributors

PersonTokensPropCommitsCommitProp
David Howells77100.00%2100.00%
Total77100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
David Howells43298.41%375.00%
Joe Perches71.59%125.00%
Total439100.00%4100.00%
Directory: net/rxrpc
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