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examples/ipsec-secgw: support UDP encap for inline crypto

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Enable UDP encapsulation for both transport and tunnel modes for the
inline crypto offload path.

Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>
This commit is contained in:
Radu Nicolau 2021-11-01 12:58:11 +00:00 committed by Akhil Goyal
parent 6019fead25
commit 9ae86b4cfc
4 changed files with 46 additions and 6 deletions
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3
doc/guides/sample_app_ug/ipsec_secgw.rst
View File

@ -717,7 +717,8 @@ where each options means:
``<udp-encap>``
* Option to enable IPsec UDP encapsulation for NAT Traversal.
Only *lookaside-protocol-offload* mode is supported at the moment.
Only *lookaside-protocol-offload* and *inline-crypto-offload* modes are
supported at the moment.
* Optional: Yes, it is disabled by default

33
examples/ipsec-secgw/ipsec.c
View File

@ -221,6 +221,12 @@ create_inline_session(struct socket_ctx *skt_ctx, struct ipsec_sa *sa,
}
}
if (sa->udp_encap) {
sess_conf.ipsec.options.udp_encap = 1;
sess_conf.ipsec.udp.sport = htons(sa->udp.sport);
sess_conf.ipsec.udp.dport = htons(sa->udp.dport);
}
RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on port %u\n",
sa->spi, sa->portid);
@ -289,12 +295,31 @@ create_inline_session(struct socket_ctx *skt_ctx, struct ipsec_sa *sa,
sa->ipv4_spec.hdr.src_addr = sa->src.ip.ip4;
}
sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP;
sa->pattern[2].spec = &sa->esp_spec;
sa->pattern[2].mask = &rte_flow_item_esp_mask;
sa->esp_spec.hdr.spi = rte_cpu_to_be_32(sa->spi);
sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
if (sa->udp_encap) {
sa->udp_spec.hdr.dst_port =
rte_cpu_to_be_16(sa->udp.dport);
sa->udp_spec.hdr.src_port =
rte_cpu_to_be_16(sa->udp.sport);
sa->pattern[2].mask = &rte_flow_item_udp_mask;
sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_UDP;
sa->pattern[2].spec = &sa->udp_spec;
sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_ESP;
sa->pattern[3].spec = &sa->esp_spec;
sa->pattern[3].mask = &rte_flow_item_esp_mask;
sa->pattern[4].type = RTE_FLOW_ITEM_TYPE_END;
} else {
sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP;
sa->pattern[2].spec = &sa->esp_spec;
sa->pattern[2].mask = &rte_flow_item_esp_mask;
sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
}
sa->action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY;
sa->action[0].conf = ips->security.ses;

7
examples/ipsec-secgw/ipsec.h
View File

@ -125,6 +125,10 @@ struct ipsec_sa {
#define IP6_TRANSPORT (1 << 4)
struct ip_addr src;
struct ip_addr dst;
struct {
uint16_t sport;
uint16_t dport;
} udp;
uint8_t cipher_key[MAX_KEY_SIZE];
uint16_t cipher_key_len;
uint8_t auth_key[MAX_KEY_SIZE];
@ -141,7 +145,7 @@ struct ipsec_sa {
uint8_t fdir_qid;
uint8_t fdir_flag;
#define MAX_RTE_FLOW_PATTERN (4)
#define MAX_RTE_FLOW_PATTERN (5)
#define MAX_RTE_FLOW_ACTIONS (3)
struct rte_flow_item pattern[MAX_RTE_FLOW_PATTERN];
struct rte_flow_action action[MAX_RTE_FLOW_ACTIONS];
@ -150,6 +154,7 @@ struct ipsec_sa {
struct rte_flow_item_ipv4 ipv4_spec;
struct rte_flow_item_ipv6 ipv6_spec;
};
struct rte_flow_item_udp udp_spec;
struct rte_flow_item_esp esp_spec;
struct rte_flow *flow;
struct rte_security_session_conf sess_conf;

9
examples/ipsec-secgw/sa.c
View File

@ -17,6 +17,7 @@
#include <rte_byteorder.h>
#include <rte_errno.h>
#include <rte_ip.h>
#include <rte_udp.h>
#include <rte_random.h>
#include <rte_ethdev.h>
#include <rte_malloc.h>
@ -781,6 +782,11 @@ parse_sa_tokens(char **tokens, uint32_t n_tokens,
app_sa_prm.udp_encap = 1;
udp_encap_p = 1;
break;
case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
rule->udp_encap = 1;
rule->udp.sport = 0;
rule->udp.dport = 4500;
break;
default:
APP_CHECK(0, status,
"UDP encapsulation not supported for "
@ -868,6 +874,8 @@ print_one_sa_rule(const struct ipsec_sa *sa, int inbound)
}
printf("mode:");
if (sa->udp_encap)
printf("UDP encapsulated ");
switch (WITHOUT_TRANSPORT_VERSION(sa->flags)) {
case IP4_TUNNEL:
@ -1327,6 +1335,7 @@ fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm, const struct ipsec_sa *ss,
prm->ipsec_xform.mode = (IS_TRANSPORT(ss->flags)) ?
RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT :
RTE_SECURITY_IPSEC_SA_MODE_TUNNEL;
prm->ipsec_xform.options.udp_encap = ss->udp_encap;
prm->ipsec_xform.options.ecn = 1;
prm->ipsec_xform.options.copy_dscp = 1;