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/*
* Copyright (c) 2016 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 __FWDTBL_H__
#define __FWDTBL_H__
struct fwd4_key {
uint32_t port;
struct in_addr addr;
} __attribute__((__packed__));
struct fwd6_key {
uint32_t port;
struct in6_addr addr;
} __attribute__((__packed__));
union fwd_key {
struct fwd4_key k4;
struct fwd6_key k6;
};
static struct rte_hash *
fwd_tbl_key_prep(const struct netfe_lcore *fe, uint16_t family,
const struct sockaddr *sa, union fwd_key *key)
{
struct rte_hash *h;
const struct sockaddr_in *sin4;
const struct sockaddr_in6 *sin6;
if (family == AF_INET) {
h = fe->fw4h;
sin4 = (const struct sockaddr_in *)sa;
key->k4.port = sin4->sin_port;
key->k4.addr = sin4->sin_addr;
} else {
h = fe->fw6h;
sin6 = (const struct sockaddr_in6 *)sa;
key->k6.port = sin6->sin6_port;
key->k6.addr = sin6->sin6_addr;
}
return h;
}
static int
fwd_tbl_add(struct netfe_lcore *fe, uint16_t family, const struct sockaddr *sa,
struct netfe_stream *data)
{
int32_t rc;
struct rte_hash *h;
union fwd_key key;
h = fwd_tbl_key_prep(fe, family, sa, &key);
rc = rte_hash_add_key_data(h, &key, data);
return rc;
}
static struct netfe_stream *
fwd_tbl_lkp(struct netfe_lcore *fe, uint16_t family, const struct sockaddr *sa)
{
int rc;
void *d;
struct rte_hash *h;
union fwd_key key;
h = fwd_tbl_key_prep(fe, family, sa, &key);
rc = rte_hash_lookup_data(h, &key, &d);
if (rc < 0)
d = NULL;
return d;
}
static int
fwd_tbl_init(struct netfe_lcore *fe, uint16_t family, uint32_t lcore)
{
int32_t rc;
struct rte_hash **h;
struct rte_hash_parameters hprm;
char buf[RTE_HASH_NAMESIZE];
if (family == AF_INET) {
snprintf(buf, sizeof(buf), "fwd4tbl@%u", lcore);
h = &fe->fw4h;
hprm.key_len = sizeof(struct fwd4_key);
} else {
snprintf(buf, sizeof(buf), "fwd6tbl@%u", lcore);
h = &fe->fw6h;
hprm.key_len = sizeof(struct fwd6_key);
}
hprm.name = buf;
hprm.entries = RTE_MAX(2 * fe->snum, 0x10U);
hprm.socket_id = rte_lcore_to_socket_id(lcore);
hprm.hash_func = NULL;
hprm.hash_func_init_val = 0;
*h = rte_hash_create(&hprm);
if (*h == NULL)
rc = (rte_errno != 0) ? -rte_errno : -ENOMEM;
else
rc = 0;
return rc;
}
#endif /* __FWDTBL_H__ */
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