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/*
* Copyright (c) 2016-2017 Intel Corporation.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _STREAM_TABLE_H_
#define _STREAM_TABLE_H_
#include <rte_hash.h>
#include "tcp_misc.h"
#ifdef __cplusplus
extern "C" {
#endif
struct stbl_entry {
void *data;
};
struct shtbl {
uint32_t nb_ent; /* max number of entries in the table. */
rte_spinlock_t l; /* lock to protect the hash table */
struct rte_hash *t;
struct stbl_entry *ent;
} __rte_cache_aligned;
struct stbl {
struct shtbl ht[TLE_VNUM];
};
struct stbl4_key {
union l4_ports port;
union ipv4_addrs addr;
} __attribute__((__packed__));
struct stbl6_key {
union l4_ports port;
union ipv6_addrs addr;
} __attribute__((__packed__));
struct stbl_key {
union l4_ports port;
union {
union ipv4_addrs addr4;
union ipv6_addrs addr6;
};
} __attribute__((__packed__));
extern void stbl_fini(struct stbl *st);
extern int stbl_init(struct stbl *st, uint32_t num, int32_t socket);
static inline void
stbl_pkt_fill_key(struct stbl_key *k, const union pkt_info *pi, uint32_t type)
{
static const struct stbl_key zero = {
.port.raw = 0,
};
k->port = pi->port;
if (type == TLE_V4)
k->addr4 = pi->addr4;
else if (type == TLE_V6)
k->addr6 = *pi->addr6;
else
*k = zero;
}
static inline void
stbl_lock(struct stbl *st, uint32_t type)
{
rte_spinlock_lock(&st->ht[type].l);
}
static inline void
stbl_unlock(struct stbl *st, uint32_t type)
{
rte_spinlock_unlock(&st->ht[type].l);
}
static inline struct stbl_entry *
stbl_add_entry(struct stbl *st, const union pkt_info *pi)
{
int32_t rc;
uint32_t type;
struct shtbl *ht;
struct stbl_key k;
type = pi->tf.type;
stbl_pkt_fill_key(&k, pi, type);
ht = st->ht + type;
rc = rte_hash_add_key(ht->t, &k);
if ((uint32_t)rc >= ht->nb_ent)
return NULL;
return ht->ent + rc;
}
static inline struct stbl_entry *
stbl_add_stream(struct stbl *st, const union pkt_info *pi, const void *s)
{
struct stbl_entry *se;
se = stbl_add_entry(st, pi);
if (se != NULL)
se->data = (void *)(uintptr_t)s;
return se;
}
static inline struct stbl_entry *
stbl_find_entry(struct stbl *st, const union pkt_info *pi)
{
int32_t rc;
uint32_t type;
struct shtbl *ht;
struct stbl_key k;
type = pi->tf.type;
stbl_pkt_fill_key(&k, pi, type);
ht = st->ht + type;
rc = rte_hash_lookup(ht->t, &k);
if ((uint32_t)rc >= ht->nb_ent)
return NULL;
return ht->ent + rc;
}
static inline void *
stbl_find_data(struct stbl *st, const union pkt_info *pi)
{
struct stbl_entry *ent;
ent = stbl_find_entry(st, pi);
return (ent == NULL) ? NULL : ent->data;
}
#include "tcp_stream.h"
static inline void
stbl_stream_fill_key(struct stbl_key *k, const struct tle_stream *s,
uint32_t type)
{
static const struct stbl_key zero = {
.port.raw = 0,
};
k->port = s->port;
if (type == TLE_V4)
k->addr4 = s->ipv4.addr;
else if (type == TLE_V6)
k->addr6 = s->ipv6.addr;
else
*k = zero;
}
static inline struct stbl_entry *
stbl_add_stream_lock(struct stbl *st, const struct tle_tcp_stream *s)
{
uint32_t type;
struct stbl_key k;
struct stbl_entry *se;
struct shtbl *ht;
int32_t rc;
type = s->s.type;
stbl_stream_fill_key(&k, &s->s, type);
ht = st->ht + type;
stbl_lock(st, type);
rc = rte_hash_add_key(ht->t, &k);
stbl_unlock(st, type);
if ((uint32_t)rc >= ht->nb_ent)
return NULL;
se = ht->ent + rc;
if (se != NULL)
se->data = (void *)(uintptr_t)s;
return se;
}
static inline void
stbl_del_stream(struct stbl *st, struct stbl_entry *se,
const struct tle_tcp_stream *s, uint32_t lock)
{
uint32_t type;
struct stbl_key k;
if (se == NULL)
return;
se->data = NULL;
type = s->s.type;
stbl_stream_fill_key(&k, &s->s, type);
if (lock != 0)
stbl_lock(st, type);
rte_hash_del_key(st->ht[type].t, &k);
if (lock != 0)
stbl_unlock(st, type);
}
#ifdef __cplusplus
}
#endif
#endif /* _STREAM_TABLE_H_ */
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