3998e2a072
Replace the BSD license header with the SPDX tag for files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
507 lines
12 KiB
C
507 lines
12 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2016 Intel Corporation
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*/
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/*
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* Security Policies
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*/
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <rte_acl.h>
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#include <rte_ip.h>
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#include "ipsec.h"
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#include "parser.h"
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#define MAX_ACL_RULE_NUM 1024
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/*
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* Rule and trace formats definitions.
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*/
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enum {
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PROTO_FIELD_IPV4,
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SRC_FIELD_IPV4,
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DST_FIELD_IPV4,
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SRCP_FIELD_IPV4,
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DSTP_FIELD_IPV4,
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NUM_FIELDS_IPV4
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};
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/*
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* That effectively defines order of IPV4 classifications:
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* - PROTO
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* - SRC IP ADDRESS
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* - DST IP ADDRESS
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* - PORTS (SRC and DST)
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*/
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enum {
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RTE_ACL_IPV4_PROTO,
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RTE_ACL_IPV4_SRC,
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RTE_ACL_IPV4_DST,
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RTE_ACL_IPV4_PORTS,
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RTE_ACL_IPV4_NUM
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};
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struct rte_acl_field_def ip4_defs[NUM_FIELDS_IPV4] = {
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{
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.type = RTE_ACL_FIELD_TYPE_BITMASK,
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.size = sizeof(uint8_t),
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.field_index = PROTO_FIELD_IPV4,
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.input_index = RTE_ACL_IPV4_PROTO,
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.offset = 0,
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},
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{
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.type = RTE_ACL_FIELD_TYPE_MASK,
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.size = sizeof(uint32_t),
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.field_index = SRC_FIELD_IPV4,
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.input_index = RTE_ACL_IPV4_SRC,
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.offset = offsetof(struct ip, ip_src) - offsetof(struct ip, ip_p)
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},
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{
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.type = RTE_ACL_FIELD_TYPE_MASK,
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.size = sizeof(uint32_t),
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.field_index = DST_FIELD_IPV4,
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.input_index = RTE_ACL_IPV4_DST,
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.offset = offsetof(struct ip, ip_dst) - offsetof(struct ip, ip_p)
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},
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{
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.type = RTE_ACL_FIELD_TYPE_RANGE,
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.size = sizeof(uint16_t),
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.field_index = SRCP_FIELD_IPV4,
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.input_index = RTE_ACL_IPV4_PORTS,
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.offset = sizeof(struct ip) - offsetof(struct ip, ip_p)
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},
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{
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.type = RTE_ACL_FIELD_TYPE_RANGE,
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.size = sizeof(uint16_t),
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.field_index = DSTP_FIELD_IPV4,
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.input_index = RTE_ACL_IPV4_PORTS,
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.offset = sizeof(struct ip) - offsetof(struct ip, ip_p) +
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sizeof(uint16_t)
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},
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};
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RTE_ACL_RULE_DEF(acl4_rules, RTE_DIM(ip4_defs));
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struct acl4_rules acl4_rules_out[MAX_ACL_RULE_NUM];
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uint32_t nb_acl4_rules_out;
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struct acl4_rules acl4_rules_in[MAX_ACL_RULE_NUM];
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uint32_t nb_acl4_rules_in;
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void
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parse_sp4_tokens(char **tokens, uint32_t n_tokens,
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struct parse_status *status)
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{
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struct acl4_rules *rule_ipv4 = NULL;
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uint32_t *ri = NULL; /* rule index */
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uint32_t ti = 0; /* token index */
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uint32_t esp_p = 0;
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uint32_t protect_p = 0;
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uint32_t bypass_p = 0;
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uint32_t discard_p = 0;
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uint32_t pri_p = 0;
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uint32_t src_p = 0;
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uint32_t dst_p = 0;
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uint32_t proto_p = 0;
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uint32_t sport_p = 0;
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uint32_t dport_p = 0;
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if (strcmp(tokens[1], "in") == 0) {
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ri = &nb_acl4_rules_in;
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APP_CHECK(*ri <= MAX_ACL_RULE_NUM - 1, status,
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"too many sp rules, abort insertion\n");
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if (status->status < 0)
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return;
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rule_ipv4 = &acl4_rules_in[*ri];
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} else if (strcmp(tokens[1], "out") == 0) {
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ri = &nb_acl4_rules_out;
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APP_CHECK(*ri <= MAX_ACL_RULE_NUM - 1, status,
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"too many sp rules, abort insertion\n");
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if (status->status < 0)
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return;
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rule_ipv4 = &acl4_rules_out[*ri];
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} else {
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APP_CHECK(0, status, "unrecognized input \"%s\", expect"
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" \"in\" or \"out\"\n", tokens[ti]);
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return;
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}
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rule_ipv4->data.category_mask = 1;
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for (ti = 2; ti < n_tokens; ti++) {
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if (strcmp(tokens[ti], "esp") == 0) {
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/* currently do nothing */
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APP_CHECK_PRESENCE(esp_p, tokens[ti], status);
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if (status->status < 0)
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return;
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esp_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "protect") == 0) {
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APP_CHECK_PRESENCE(protect_p, tokens[ti], status);
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if (status->status < 0)
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return;
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APP_CHECK(bypass_p == 0, status, "conflict item "
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"between \"%s\" and \"%s\"", tokens[ti],
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"bypass");
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if (status->status < 0)
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return;
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APP_CHECK(discard_p == 0, status, "conflict item "
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"between \"%s\" and \"%s\"", tokens[ti],
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"discard");
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK_TOKEN_IS_NUM(tokens, ti, status);
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if (status->status < 0)
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return;
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rule_ipv4->data.userdata =
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PROTECT(atoi(tokens[ti]));
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protect_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "bypass") == 0) {
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APP_CHECK_PRESENCE(bypass_p, tokens[ti], status);
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if (status->status < 0)
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return;
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APP_CHECK(protect_p == 0, status, "conflict item "
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"between \"%s\" and \"%s\"", tokens[ti],
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"protect");
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if (status->status < 0)
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return;
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APP_CHECK(discard_p == 0, status, "conflict item "
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"between \"%s\" and \"%s\"", tokens[ti],
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"discard");
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if (status->status < 0)
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return;
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rule_ipv4->data.userdata = BYPASS;
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bypass_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "discard") == 0) {
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APP_CHECK_PRESENCE(discard_p, tokens[ti], status);
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if (status->status < 0)
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return;
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APP_CHECK(protect_p == 0, status, "conflict item "
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"between \"%s\" and \"%s\"", tokens[ti],
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"protect");
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if (status->status < 0)
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return;
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APP_CHECK(bypass_p == 0, status, "conflict item "
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"between \"%s\" and \"%s\"", tokens[ti],
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"discard");
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if (status->status < 0)
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return;
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rule_ipv4->data.userdata = DISCARD;
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discard_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "pri") == 0) {
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APP_CHECK_PRESENCE(pri_p, tokens[ti], status);
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK_TOKEN_IS_NUM(tokens, ti, status);
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if (status->status < 0)
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return;
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rule_ipv4->data.priority = atoi(tokens[ti]);
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pri_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "src") == 0) {
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struct in_addr ip;
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uint32_t depth;
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APP_CHECK_PRESENCE(src_p, tokens[ti], status);
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK(parse_ipv4_addr(tokens[ti], &ip,
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&depth) == 0, status, "unrecognized "
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"input \"%s\", expect valid ipv4 addr",
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tokens[ti]);
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if (status->status < 0)
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return;
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rule_ipv4->field[1].value.u32 =
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rte_bswap32(ip.s_addr);
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rule_ipv4->field[1].mask_range.u32 =
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depth;
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src_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "dst") == 0) {
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struct in_addr ip;
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uint32_t depth;
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APP_CHECK_PRESENCE(dst_p, tokens[ti], status);
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK(parse_ipv4_addr(tokens[ti], &ip,
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&depth) == 0, status, "unrecognized "
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"input \"%s\", expect valid ipv4 addr",
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tokens[ti]);
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if (status->status < 0)
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return;
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rule_ipv4->field[2].value.u32 =
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rte_bswap32(ip.s_addr);
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rule_ipv4->field[2].mask_range.u32 =
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depth;
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dst_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "proto") == 0) {
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uint16_t low, high;
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APP_CHECK_PRESENCE(proto_p, tokens[ti], status);
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK(parse_range(tokens[ti], &low, &high)
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== 0, status, "unrecognized input \"%s\""
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", expect \"from:to\"", tokens[ti]);
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if (status->status < 0)
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return;
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APP_CHECK(low <= 0xff, status, "proto low "
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"over-limit");
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if (status->status < 0)
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return;
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APP_CHECK(high <= 0xff, status, "proto high "
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"over-limit");
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if (status->status < 0)
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return;
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rule_ipv4->field[0].value.u8 = (uint8_t)low;
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rule_ipv4->field[0].mask_range.u8 = (uint8_t)high;
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proto_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "sport") == 0) {
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uint16_t port_low, port_high;
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APP_CHECK_PRESENCE(sport_p, tokens[ti], status);
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK(parse_range(tokens[ti], &port_low,
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&port_high) == 0, status, "unrecognized "
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"input \"%s\", expect \"port_from:"
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"port_to\"", tokens[ti]);
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if (status->status < 0)
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return;
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rule_ipv4->field[3].value.u16 = port_low;
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rule_ipv4->field[3].mask_range.u16 = port_high;
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sport_p = 1;
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continue;
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}
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if (strcmp(tokens[ti], "dport") == 0) {
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uint16_t port_low, port_high;
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APP_CHECK_PRESENCE(dport_p, tokens[ti], status);
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if (status->status < 0)
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return;
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INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
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if (status->status < 0)
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return;
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APP_CHECK(parse_range(tokens[ti], &port_low,
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&port_high) == 0, status, "unrecognized "
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"input \"%s\", expect \"port_from:"
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"port_to\"", tokens[ti]);
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if (status->status < 0)
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return;
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rule_ipv4->field[4].value.u16 = port_low;
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rule_ipv4->field[4].mask_range.u16 = port_high;
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dport_p = 1;
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continue;
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}
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/* unrecognizeable input */
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APP_CHECK(0, status, "unrecognized input \"%s\"",
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tokens[ti]);
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return;
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}
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/* check if argument(s) are missing */
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APP_CHECK(esp_p == 1, status, "missing argument \"esp\"");
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if (status->status < 0)
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return;
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APP_CHECK(protect_p | bypass_p | discard_p, status, "missing "
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"argument \"protect\", \"bypass\", or \"discard\"");
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if (status->status < 0)
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return;
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*ri = *ri + 1;
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}
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static void
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print_one_ip4_rule(const struct acl4_rules *rule, int32_t extra)
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{
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uint8_t a, b, c, d;
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uint32_t_to_char(rule->field[SRC_FIELD_IPV4].value.u32,
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&a, &b, &c, &d);
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printf("%hhu.%hhu.%hhu.%hhu/%u ", a, b, c, d,
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rule->field[SRC_FIELD_IPV4].mask_range.u32);
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uint32_t_to_char(rule->field[DST_FIELD_IPV4].value.u32,
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&a, &b, &c, &d);
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printf("%hhu.%hhu.%hhu.%hhu/%u ", a, b, c, d,
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rule->field[DST_FIELD_IPV4].mask_range.u32);
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printf("%hu : %hu %hu : %hu 0x%hhx/0x%hhx ",
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rule->field[SRCP_FIELD_IPV4].value.u16,
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rule->field[SRCP_FIELD_IPV4].mask_range.u16,
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rule->field[DSTP_FIELD_IPV4].value.u16,
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rule->field[DSTP_FIELD_IPV4].mask_range.u16,
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rule->field[PROTO_FIELD_IPV4].value.u8,
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rule->field[PROTO_FIELD_IPV4].mask_range.u8);
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if (extra)
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printf("0x%x-0x%x-0x%x ",
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rule->data.category_mask,
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rule->data.priority,
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rule->data.userdata);
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}
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static inline void
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dump_ip4_rules(const struct acl4_rules *rule, int32_t num, int32_t extra)
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{
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int32_t i;
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for (i = 0; i < num; i++, rule++) {
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printf("\t%d:", i + 1);
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print_one_ip4_rule(rule, extra);
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printf("\n");
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}
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}
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static struct rte_acl_ctx *
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acl4_init(const char *name, int32_t socketid, const struct acl4_rules *rules,
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uint32_t rules_nb)
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{
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char s[PATH_MAX];
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struct rte_acl_param acl_param;
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struct rte_acl_config acl_build_param;
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struct rte_acl_ctx *ctx;
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printf("Creating SP context with %u max rules\n", MAX_ACL_RULE_NUM);
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memset(&acl_param, 0, sizeof(acl_param));
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/* Create ACL contexts */
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snprintf(s, sizeof(s), "%s_%d", name, socketid);
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printf("IPv4 %s entries [%u]:\n", s, rules_nb);
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dump_ip4_rules(rules, rules_nb, 1);
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acl_param.name = s;
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acl_param.socket_id = socketid;
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acl_param.rule_size = RTE_ACL_RULE_SZ(RTE_DIM(ip4_defs));
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acl_param.max_rule_num = MAX_ACL_RULE_NUM;
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ctx = rte_acl_create(&acl_param);
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if (ctx == NULL)
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rte_exit(EXIT_FAILURE, "Failed to create ACL context\n");
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if (rte_acl_add_rules(ctx, (const struct rte_acl_rule *)rules,
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rules_nb) < 0)
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rte_exit(EXIT_FAILURE, "add rules failed\n");
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/* Perform builds */
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memset(&acl_build_param, 0, sizeof(acl_build_param));
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acl_build_param.num_categories = DEFAULT_MAX_CATEGORIES;
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acl_build_param.num_fields = RTE_DIM(ip4_defs);
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memcpy(&acl_build_param.defs, ip4_defs, sizeof(ip4_defs));
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if (rte_acl_build(ctx, &acl_build_param) != 0)
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rte_exit(EXIT_FAILURE, "Failed to build ACL trie\n");
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rte_acl_dump(ctx);
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return ctx;
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}
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void
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sp4_init(struct socket_ctx *ctx, int32_t socket_id)
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{
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const char *name;
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if (ctx == NULL)
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rte_exit(EXIT_FAILURE, "NULL context.\n");
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if (ctx->sp_ip4_in != NULL)
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rte_exit(EXIT_FAILURE, "Inbound SP DB for socket %u already "
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"initialized\n", socket_id);
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if (ctx->sp_ip4_out != NULL)
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rte_exit(EXIT_FAILURE, "Outbound SP DB for socket %u already "
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"initialized\n", socket_id);
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if (nb_acl4_rules_in > 0) {
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name = "sp_ip4_in";
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ctx->sp_ip4_in = (struct sp_ctx *)acl4_init(name,
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socket_id, acl4_rules_in, nb_acl4_rules_in);
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} else
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RTE_LOG(WARNING, IPSEC, "No IPv4 SP Inbound rule "
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"specified\n");
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if (nb_acl4_rules_out > 0) {
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name = "sp_ip4_out";
|
|
ctx->sp_ip4_out = (struct sp_ctx *)acl4_init(name,
|
|
socket_id, acl4_rules_out, nb_acl4_rules_out);
|
|
} else
|
|
RTE_LOG(WARNING, IPSEC, "No IPv4 SP Outbound rule "
|
|
"specified\n");
|
|
}
|