Release 4.15 net/netfilter/nf_conntrack_labels.c
/*
* test/set flag bits stored in conntrack extension area.
*
* (C) 2013 Astaro GmbH & Co KG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/export.h>
#include <linux/types.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_conntrack_labels.h>
static spinlock_t nf_connlabels_lock;
static int replace_u32(u32 *address, u32 mask, u32 new)
{
u32 old, tmp;
do {
old = *address;
tmp = (old & mask) ^ new;
if (old == tmp)
return 0;
} while (cmpxchg(address, old, tmp) != old);
return 1;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 65 | 100.00% | 2 | 100.00% |
| Total | 65 | 100.00% | 2 | 100.00% |
int nf_connlabels_replace(struct nf_conn *ct,
const u32 *data,
const u32 *mask, unsigned int words32)
{
struct nf_conn_labels *labels;
unsigned int size, i;
int changed = 0;
u32 *dst;
labels = nf_ct_labels_find(ct);
if (!labels)
return -ENOSPC;
size = sizeof(labels->bits);
if (size < (words32 * sizeof(u32)))
words32 = size / sizeof(u32);
dst = (u32 *) labels->bits;
for (i = 0; i < words32; i++)
changed |= replace_u32(&dst[i], mask ? ~mask[i] : 0, data[i]);
size /= sizeof(u32);
for (i = words32; i < size; i++) /* pad */
replace_u32(&dst[i], 0, 0);
if (changed)
nf_conntrack_event_cache(IPCT_LABEL, ct);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 188 | 100.00% | 3 | 100.00% |
| Total | 188 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(nf_connlabels_replace);
int nf_connlabels_get(struct net *net, unsigned int bits)
{
if (BIT_WORD(bits) >= NF_CT_LABELS_MAX_SIZE / sizeof(long))
return -ERANGE;
spin_lock(&nf_connlabels_lock);
net->ct.labels_used++;
spin_unlock(&nf_connlabels_lock);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Joe Stringer | 41 | 75.93% | 1 | 33.33% |
| Florian Westphal | 13 | 24.07% | 2 | 66.67% |
| Total | 54 | 100.00% | 3 | 100.00% |
EXPORT_SYMBOL_GPL(nf_connlabels_get);
void nf_connlabels_put(struct net *net)
{
spin_lock(&nf_connlabels_lock);
net->ct.labels_used--;
spin_unlock(&nf_connlabels_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Joe Stringer | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(nf_connlabels_put);
static const struct nf_ct_ext_type labels_extend = {
.len = sizeof(struct nf_conn_labels),
.align = __alignof__(struct nf_conn_labels),
.id = NF_CT_EXT_LABELS,
};
int nf_conntrack_labels_init(void)
{
BUILD_BUG_ON(NF_CT_LABELS_MAX_SIZE / sizeof(long) >= U8_MAX);
spin_lock_init(&nf_connlabels_lock);
return nf_ct_extend_register(&labels_extend);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 25 | 78.12% | 2 | 50.00% |
| Joe Stringer | 6 | 18.75% | 1 | 25.00% |
| Gao Feng | 1 | 3.12% | 1 | 25.00% |
| Total | 32 | 100.00% | 4 | 100.00% |
void nf_conntrack_labels_fini(void)
{
nf_ct_extend_unregister(&labels_extend);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 12 | 92.31% | 1 | 50.00% |
| Gao Feng | 1 | 7.69% | 1 | 50.00% |
| Total | 13 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Florian Westphal | 352 | 79.28% | 6 | 75.00% |
| Joe Stringer | 90 | 20.27% | 1 | 12.50% |
| Gao Feng | 2 | 0.45% | 1 | 12.50% |
| Total | 444 | 100.00% | 8 | 100.00% |
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