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/*-
* BSD LICENSE
*
* Copyright(c) 2016 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Routing Table (RT)
*/
#include <sys/types.h>
#include <rte_lpm.h>
#include <rte_errno.h>
#include "ipsec.h"
#define RT_IPV4_MAX_RULES 64
struct ipv4_route {
uint32_t ip;
uint8_t depth;
uint8_t if_out;
};
/* In the default routing table we have:
* ep0 protected ports 0 and 1, and unprotected ports 2 and 3.
*/
static struct ipv4_route rt_ipv4_ep0[] = {
{ IPv4(172, 16, 2, 5), 32, 0 },
{ IPv4(172, 16, 2, 6), 32, 0 },
{ IPv4(172, 16, 2, 7), 32, 1 },
{ IPv4(172, 16, 2, 8), 32, 1 },
{ IPv4(192, 168, 115, 0), 24, 2 },
{ IPv4(192, 168, 116, 0), 24, 2 },
{ IPv4(192, 168, 117, 0), 24, 3 },
{ IPv4(192, 168, 118, 0), 24, 3 },
{ IPv4(192, 168, 210, 0), 24, 2 },
{ IPv4(192, 168, 240, 0), 24, 2 },
{ IPv4(192, 168, 250, 0), 24, 0 }
};
/* In the default routing table we have:
* ep1 protected ports 0 and 1, and unprotected ports 2 and 3.
*/
static struct ipv4_route rt_ipv4_ep1[] = {
{ IPv4(172, 16, 1, 5), 32, 2 },
{ IPv4(172, 16, 1, 6), 32, 2 },
{ IPv4(172, 16, 1, 7), 32, 3 },
{ IPv4(172, 16, 1, 8), 32, 3 },
{ IPv4(192, 168, 105, 0), 24, 0 },
{ IPv4(192, 168, 106, 0), 24, 0 },
{ IPv4(192, 168, 107, 0), 24, 1 },
{ IPv4(192, 168, 108, 0), 24, 1 },
{ IPv4(192, 168, 200, 0), 24, 0 },
{ IPv4(192, 168, 240, 0), 24, 2 },
{ IPv4(192, 168, 250, 0), 24, 0 }
};
void
rt_init(struct socket_ctx *ctx, int socket_id, unsigned ep)
{
char name[PATH_MAX];
unsigned i;
int ret;
struct rte_lpm *lpm;
struct ipv4_route *rt;
char a, b, c, d;
unsigned nb_routes;
struct rte_lpm_config conf = { 0 };
if (ctx == NULL)
rte_exit(EXIT_FAILURE, "NULL context.\n");
if (ctx->rt_ipv4 != NULL)
rte_exit(EXIT_FAILURE, "Routing Table for socket %u already "
"initialized\n", socket_id);
printf("Creating Routing Table (RT) context with %u max routes\n",
RT_IPV4_MAX_RULES);
if (ep == 0) {
rt = rt_ipv4_ep0;
nb_routes = RTE_DIM(rt_ipv4_ep0);
} else if (ep == 1) {
rt = rt_ipv4_ep1;
nb_routes = RTE_DIM(rt_ipv4_ep1);
} else
rte_exit(EXIT_FAILURE, "Invalid EP value %u. Only 0 or 1 "
"supported.\n", ep);
/* create the LPM table */
snprintf(name, sizeof(name), "%s_%u", "rt_ipv4", socket_id);
conf.max_rules = RT_IPV4_MAX_RULES;
conf.number_tbl8s = RTE_LPM_TBL8_NUM_ENTRIES;
lpm = rte_lpm_create(name, socket_id, &conf);
if (lpm == NULL)
rte_exit(EXIT_FAILURE, "Unable to create LPM table "
"on socket %d\n", socket_id);
/* populate the LPM table */
for (i = 0; i < nb_routes; i++) {
ret = rte_lpm_add(lpm, rt[i].ip, rt[i].depth, rt[i].if_out);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Unable to add entry num %u to "
"LPM table on socket %d\n", i, socket_id);
uint32_t_to_char(rt[i].ip, &a, &b, &c, &d);
printf("LPM: Adding route %hhu.%hhu.%hhu.%hhu/%hhu (%hhu)\n",
a, b, c, d, rt[i].depth, rt[i].if_out);
}
ctx->rt_ipv4 = (struct rt_ctx *)lpm;
}
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