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/*
* lib/netfilter/log_obj.c Netfilter Log Object
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version 2.1
* of the License.
*
* Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
* Copyright (c) 2007 Philip Craig <philipc@snapgear.com>
* Copyright (c) 2007 Secure Computing Corporation
* Copyright (c) 2008 Patrick McHardy <kaber@trash.net>
*/
#include <netlink-local.h>
#include <netlink/netfilter/nfnl.h>
#include <netlink/netfilter/log.h>
/** @cond SKIP */
#define LOG_ATTR_GROUP (1UL << 0)
#define LOG_ATTR_COPY_MODE (1UL << 1)
#define LOG_ATTR_COPY_RANGE (1UL << 3)
#define LOG_ATTR_FLUSH_TIMEOUT (1UL << 4)
#define LOG_ATTR_ALLOC_SIZE (1UL << 5)
#define LOG_ATTR_QUEUE_THRESHOLD (1UL << 6)
/** @endcond */
static void nfnl_log_dump(struct nl_object *a, struct nl_dump_params *p)
{
struct nfnl_log *log = (struct nfnl_log *) a;
char buf[64];
nl_new_line(p);
if (log->ce_mask & LOG_ATTR_GROUP)
nl_dump(p, "group=%u ", log->log_group);
if (log->ce_mask & LOG_ATTR_COPY_MODE)
nl_dump(p, "copy_mode=%s ",
nfnl_log_copy_mode2str(log->log_copy_mode,
buf, sizeof(buf)));
if (log->ce_mask & LOG_ATTR_COPY_RANGE)
nl_dump(p, "copy_range=%u ", log->log_copy_range);
if (log->ce_mask & LOG_ATTR_FLUSH_TIMEOUT)
nl_dump(p, "flush_timeout=%u ", log->log_flush_timeout);
if (log->ce_mask & LOG_ATTR_ALLOC_SIZE)
nl_dump(p, "alloc_size=%u ", log->log_alloc_size);
if (log->ce_mask & LOG_ATTR_QUEUE_THRESHOLD)
nl_dump(p, "queue_threshold=%u ", log->log_queue_threshold);
nl_dump(p, "\n");
}
static struct trans_tbl copy_modes[] = {
__ADD(NFNL_LOG_COPY_NONE, none)
__ADD(NFNL_LOG_COPY_META, meta)
__ADD(NFNL_LOG_COPY_PACKET, packet)
};
char *nfnl_log_copy_mode2str(enum nfnl_log_copy_mode copy_mode, char *buf,
size_t len)
{
return __type2str(copy_mode, buf, len, copy_modes,
ARRAY_SIZE(copy_modes));
}
enum nfnl_log_copy_mode nfnl_log_str2copy_mode(const char *name)
{
return __str2type(name, copy_modes, ARRAY_SIZE(copy_modes));
}
/**
* @name Allocation/Freeing
* @{
*/
struct nfnl_log *nfnl_log_alloc(void)
{
return (struct nfnl_log *) nl_object_alloc(&log_obj_ops);
}
void nfnl_log_get(struct nfnl_log *log)
{
nl_object_get((struct nl_object *) log);
}
void nfnl_log_put(struct nfnl_log *log)
{
nl_object_put((struct nl_object *) log);
}
/** @} */
/**
* @name Attributes
* @{
*/
void nfnl_log_set_group(struct nfnl_log *log, uint16_t group)
{
log->log_group = group;
log->ce_mask |= LOG_ATTR_GROUP;
}
int nfnl_log_test_group(const struct nfnl_log *log)
{
return !!(log->ce_mask & LOG_ATTR_GROUP);
}
uint16_t nfnl_log_get_group(const struct nfnl_log *log)
{
return log->log_group;
}
void nfnl_log_set_copy_mode(struct nfnl_log *log, enum nfnl_log_copy_mode mode)
{
log->log_copy_mode = mode;
log->ce_mask |= LOG_ATTR_COPY_MODE;
}
int nfnl_log_test_copy_mode(const struct nfnl_log *log)
{
return !!(log->ce_mask & LOG_ATTR_COPY_MODE);
}
enum nfnl_log_copy_mode nfnl_log_get_copy_mode(const struct nfnl_log *log)
{
return log->log_copy_mode;
}
void nfnl_log_set_copy_range(struct nfnl_log *log, uint32_t copy_range)
{
log->log_copy_range = copy_range;
log->ce_mask |= LOG_ATTR_COPY_RANGE;
}
int nfnl_log_test_copy_range(const struct nfnl_log *log)
{
return !!(log->ce_mask & LOG_ATTR_COPY_RANGE);
}
uint32_t nfnl_log_get_copy_range(const struct nfnl_log *log)
{
return log->log_copy_range;
}
void nfnl_log_set_flush_timeout(struct nfnl_log *log, uint32_t timeout)
{
log->log_flush_timeout = timeout;
log->ce_mask |= LOG_ATTR_FLUSH_TIMEOUT;
}
int nfnl_log_test_flush_timeout(const struct nfnl_log *log)
{
return !!(log->ce_mask & LOG_ATTR_FLUSH_TIMEOUT);
}
uint32_t nfnl_log_get_flush_timeout(const struct nfnl_log *log)
{
return log->log_flush_timeout;
}
void nfnl_log_set_alloc_size(struct nfnl_log *log, uint32_t alloc_size)
{
log->log_alloc_size = alloc_size;
log->ce_mask |= LOG_ATTR_ALLOC_SIZE;
}
int nfnl_log_test_alloc_size(const struct nfnl_log *log)
{
return !!(log->ce_mask & LOG_ATTR_ALLOC_SIZE);
}
uint32_t nfnl_log_get_alloc_size(const struct nfnl_log *log)
{
return log->log_alloc_size;
}
void nfnl_log_set_queue_threshold(struct nfnl_log *log, uint32_t threshold)
{
log->log_queue_threshold = threshold;
log->ce_mask |= LOG_ATTR_QUEUE_THRESHOLD;
}
int nfnl_log_test_queue_threshold(const struct nfnl_log *log)
{
return !!(log->ce_mask & LOG_ATTR_QUEUE_THRESHOLD);
}
uint32_t nfnl_log_get_queue_threshold(const struct nfnl_log *log)
{
return log->log_queue_threshold;
}
/* We don't actually use the flags for anything yet since the
* nfnetlog_log interface truly sucks - it only contains the
* flag value, but not mask, so we would have to make assumptions
* about the supported flags.
*/
void nfnl_log_set_flags(struct nfnl_log *log, unsigned int flags)
{
log->log_flags |= flags;
log->log_flag_mask |= flags;
}
void nfnl_log_unset_flags(struct nfnl_log *log, unsigned int flags)
{
log->log_flags &= ~flags;
log->log_flag_mask |= flags;
}
static struct trans_tbl log_flags[] = {
__ADD(NFNL_LOG_FLAG_SEQ, seq)
__ADD(NFNL_LOG_FLAG_SEQ_GLOBAL, seq_global)
};
char *nfnl_log_flags2str(unsigned int flags, char *buf, size_t len)
{
return __flags2str(flags, buf, len, log_flags, ARRAY_SIZE(log_flags));
}
unsigned int nfnl_log_str2flags(const char *name)
{
return __str2flags(name, log_flags, ARRAY_SIZE(log_flags));
}
static int nfnl_log_compare(struct nl_object *_a, struct nl_object *_b,
uint32_t attrs, int flags)
{
struct nfnl_log *a = (struct nfnl_log *) _a;
struct nfnl_log *b = (struct nfnl_log *) _b;
int diff = 0;
#define NFNL_LOG_DIFF(ATTR, EXPR) \
ATTR_DIFF(attrs, LOG_ATTR_##ATTR, a, b, EXPR)
#define NFNL_LOG_DIFF_VAL(ATTR, FIELD) \
NFNL_LOG_DIFF(ATTR, a->FIELD != b->FIELD)
diff |= NFNL_LOG_DIFF_VAL(GROUP, log_group);
diff |= NFNL_LOG_DIFF_VAL(COPY_MODE, log_copy_mode);
diff |= NFNL_LOG_DIFF_VAL(COPY_RANGE, log_copy_range);
diff |= NFNL_LOG_DIFF_VAL(FLUSH_TIMEOUT, log_flush_timeout);
diff |= NFNL_LOG_DIFF_VAL(ALLOC_SIZE, log_alloc_size);
diff |= NFNL_LOG_DIFF_VAL(QUEUE_THRESHOLD, log_queue_threshold);
#undef NFNL_LOG_DIFF
#undef NFNL_LOG_DIFF_VAL
return diff;
}
static struct trans_tbl nfnl_log_attrs[] = {
__ADD(LOG_ATTR_GROUP, group)
__ADD(LOG_ATTR_COPY_MODE, copy_mode)
__ADD(LOG_ATTR_COPY_RANGE, copy_range)
__ADD(LOG_ATTR_FLUSH_TIMEOUT, flush_timeout)
__ADD(LOG_ATTR_ALLOC_SIZE, alloc_size)
__ADD(LOG_ATTR_QUEUE_THRESHOLD, queue_threshold)
};
static char *nfnl_log_attrs2str(int attrs, char *buf, size_t len)
{
return __flags2str(attrs, buf, len, nfnl_log_attrs,
ARRAY_SIZE(nfnl_log_attrs));
}
/** @} */
struct nl_object_ops log_obj_ops = {
.oo_name = "netfilter/log",
.oo_size = sizeof(struct nfnl_log),
.oo_dump = {
[NL_DUMP_LINE] = nfnl_log_dump,
[NL_DUMP_DETAILS] = nfnl_log_dump,
[NL_DUMP_STATS] = nfnl_log_dump,
},
.oo_compare = nfnl_log_compare,
.oo_attrs2str = nfnl_log_attrs2str,
.oo_id_attrs = LOG_ATTR_GROUP,
};
/** @} */