diff options
Diffstat (limited to 'src/spdk/dpdk/examples/ipsec-secgw/rt.c')
| -rw-r--r-- | src/spdk/dpdk/examples/ipsec-secgw/rt.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/spdk/dpdk/examples/ipsec-secgw/rt.c b/src/spdk/dpdk/examples/ipsec-secgw/rt.c new file mode 100644 index 00000000..ec3a375f --- /dev/null +++ b/src/spdk/dpdk/examples/ipsec-secgw/rt.c @@ -0,0 +1,206 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2016 Intel Corporation + */ + +/* + * Routing Table (RT) + */ +#include <sys/types.h> +#include <rte_lpm.h> +#include <rte_lpm6.h> +#include <rte_errno.h> +#include <rte_ip.h> + +#include "ipsec.h" +#include "parser.h" + +#define RT_IPV4_MAX_RULES 1024 +#define RT_IPV6_MAX_RULES 1024 + +struct ip4_route { + uint32_t ip; + uint8_t depth; + uint8_t if_out; +}; + +struct ip6_route { + uint8_t ip[16]; + uint8_t depth; + uint8_t if_out; +}; + +struct ip4_route rt_ip4[RT_IPV4_MAX_RULES]; +uint32_t nb_rt_ip4; + +struct ip6_route rt_ip6[RT_IPV4_MAX_RULES]; +uint32_t nb_rt_ip6; + +void +parse_rt_tokens(char **tokens, uint32_t n_tokens, + struct parse_status *status) +{ + uint32_t ti; + uint32_t *n_rts = NULL; + struct ip4_route *route_ipv4 = NULL; + struct ip6_route *route_ipv6 = NULL; + + if (strcmp(tokens[0], "ipv4") == 0) { + n_rts = &nb_rt_ip4; + route_ipv4 = &rt_ip4[*n_rts]; + + APP_CHECK(*n_rts <= RT_IPV4_MAX_RULES - 1, status, + "too many rt rules, abort insertion\n"); + if (status->status < 0) + return; + + } else if (strcmp(tokens[0], "ipv6") == 0) { + n_rts = &nb_rt_ip6; + route_ipv6 = &rt_ip6[*n_rts]; + + APP_CHECK(*n_rts <= RT_IPV6_MAX_RULES - 1, status, + "too many rt rules, abort insertion\n"); + if (status->status < 0) + return; + } else { + APP_CHECK(0, status, "unrecognized input \"%s\"", + tokens[0]); + return; + } + + for (ti = 1; ti < n_tokens; ti++) { + if (strcmp(tokens[ti], "dst") == 0) { + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + + if (route_ipv4 != NULL) { + struct in_addr ip; + uint32_t depth = 0; + + APP_CHECK(parse_ipv4_addr(tokens[ti], + &ip, &depth) == 0, status, + "unrecognized input \"%s\", " + "expect valid ipv4 addr", + tokens[ti]); + if (status->status < 0) + return; + route_ipv4->ip = rte_bswap32( + (uint32_t)ip.s_addr); + route_ipv4->depth = (uint8_t)depth; + } else { + struct in6_addr ip; + uint32_t depth; + + APP_CHECK(parse_ipv6_addr(tokens[ti], + &ip, &depth) == 0, status, + "unrecognized input \"%s\", " + "expect valid ipv6 address", + tokens[ti]); + if (status->status < 0) + return; + memcpy(route_ipv6->ip, ip.s6_addr, 16); + route_ipv6->depth = (uint8_t)depth; + } + } + + if (strcmp(tokens[ti], "port") == 0) { + INCREMENT_TOKEN_INDEX(ti, n_tokens, status); + if (status->status < 0) + return; + APP_CHECK_TOKEN_IS_NUM(tokens, ti, status); + if (status->status < 0) + return; + if (route_ipv4 != NULL) + route_ipv4->if_out = atoi(tokens[ti]); + else + route_ipv6->if_out = atoi(tokens[ti]); + } + } + + *n_rts = *n_rts + 1; +} + +void +rt_init(struct socket_ctx *ctx, int32_t socket_id) +{ + char name[PATH_MAX]; + uint32_t i; + int32_t ret; + struct rte_lpm *lpm; + struct rte_lpm6 *lpm6; + char a, b, c, d; + struct rte_lpm_config conf = { 0 }; + struct rte_lpm6_config conf6 = { 0 }; + + if (ctx == NULL) + rte_exit(EXIT_FAILURE, "NULL context.\n"); + + if (ctx->rt_ip4 != NULL) + rte_exit(EXIT_FAILURE, "IPv4 Routing Table for socket %u " + "already initialized\n", socket_id); + + if (ctx->rt_ip6 != NULL) + rte_exit(EXIT_FAILURE, "IPv6 Routing Table for socket %u " + "already initialized\n", socket_id); + + if (nb_rt_ip4 == 0 && nb_rt_ip6 == 0) + RTE_LOG(WARNING, IPSEC, "No Routing rule specified\n"); + + printf("Creating IPv4 Routing Table (RT) context with %u max routes\n", + RT_IPV4_MAX_RULES); + + /* create the LPM table */ + snprintf(name, sizeof(name), "%s_%u", "rt_ip4", 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 %s LPM table " + "on socket %d\n", name, socket_id); + + /* populate the LPM table */ + for (i = 0; i < nb_rt_ip4; i++) { + ret = rte_lpm_add(lpm, rt_ip4[i].ip, rt_ip4[i].depth, + rt_ip4[i].if_out); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Fail to add entry num %u to %s " + "LPM table on socket %d\n", i, name, socket_id); + + uint32_t_to_char(rt_ip4[i].ip, &a, &b, &c, &d); + printf("LPM: Adding route %hhu.%hhu.%hhu.%hhu/%hhu (%hhu)\n", + a, b, c, d, rt_ip4[i].depth, + rt_ip4[i].if_out); + } + + snprintf(name, sizeof(name), "%s_%u", "rt_ip6", socket_id); + conf6.max_rules = RT_IPV6_MAX_RULES; + conf6.number_tbl8s = RTE_LPM_TBL8_NUM_ENTRIES; + lpm6 = rte_lpm6_create(name, socket_id, &conf6); + if (lpm6 == NULL) + rte_exit(EXIT_FAILURE, "Unable to create %s LPM table " + "on socket %d\n", name, socket_id); + + /* populate the LPM table */ + for (i = 0; i < nb_rt_ip6; i++) { + ret = rte_lpm6_add(lpm6, rt_ip6[i].ip, rt_ip6[i].depth, + rt_ip6[i].if_out); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Fail to add entry num %u to %s " + "LPM table on socket %d\n", i, name, socket_id); + + printf("LPM6: Adding route " + " %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx/%hhx (%hhx)\n", + (uint16_t)((rt_ip6[i].ip[0] << 8) | rt_ip6[i].ip[1]), + (uint16_t)((rt_ip6[i].ip[2] << 8) | rt_ip6[i].ip[3]), + (uint16_t)((rt_ip6[i].ip[4] << 8) | rt_ip6[i].ip[5]), + (uint16_t)((rt_ip6[i].ip[6] << 8) | rt_ip6[i].ip[7]), + (uint16_t)((rt_ip6[i].ip[8] << 8) | rt_ip6[i].ip[9]), + (uint16_t)((rt_ip6[i].ip[10] << 8) | rt_ip6[i].ip[11]), + (uint16_t)((rt_ip6[i].ip[12] << 8) | rt_ip6[i].ip[13]), + (uint16_t)((rt_ip6[i].ip[14] << 8) | rt_ip6[i].ip[15]), + rt_ip6[i].depth, rt_ip6[i].if_out); + } + + ctx->rt_ip4 = (struct rt_ctx *)lpm; + ctx->rt_ip6 = (struct rt_ctx *)lpm6; +} |