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Diffstat (limited to 'examples/ipsec-secgw/rt.c')
| -rw-r--r-- | examples/ipsec-secgw/rt.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/examples/ipsec-secgw/rt.c b/examples/ipsec-secgw/rt.c new file mode 100644 index 00000000..a6d0866a --- /dev/null +++ b/examples/ipsec-secgw/rt.c @@ -0,0 +1,145 @@ +/*- + * 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; +} |