/*-
* BSD LICENSE
*
- * Copyright(c) 2016 Intel Corporation. All rights reserved.
+ * Copyright(c) 2016-2017 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include <unistd.h>
#include <rte_common.h>
-#include <rte_memcpy.h>
#include <rte_crypto.h>
#include <rte_cryptodev.h>
#include <rte_random.h>
#include "esp.h"
#include "ipip.h"
-static inline void
-random_iv_u64(uint64_t *buf, uint16_t n)
-{
- uint32_t left = n & 0x7;
- uint32_t i;
-
- RTE_ASSERT((n & 0x3) == 0);
-
- for (i = 0; i < (n >> 3); i++)
- buf[i] = rte_rand();
-
- if (left)
- *((uint32_t *)&buf[i]) = (uint32_t)lrand48();
-}
+#define IV_OFFSET (sizeof(struct rte_crypto_op) + \
+ sizeof(struct rte_crypto_sym_op))
int
esp_inbound(struct rte_mbuf *m, struct ipsec_sa *sa,
struct rte_crypto_op *cop)
{
- int32_t payload_len, ip_hdr_len;
+ struct ip *ip4;
struct rte_crypto_sym_op *sym_cop;
+ int32_t payload_len, ip_hdr_len;
RTE_ASSERT(m != NULL);
RTE_ASSERT(sa != NULL);
RTE_ASSERT(cop != NULL);
- ip_hdr_len = 0;
- switch (sa->flags) {
- case IP4_TUNNEL:
- ip_hdr_len = sizeof(struct ip);
- break;
- case IP6_TUNNEL:
+ ip4 = rte_pktmbuf_mtod(m, struct ip *);
+ if (likely(ip4->ip_v == IPVERSION))
+ ip_hdr_len = ip4->ip_hl * 4;
+ else if (ip4->ip_v == IP6_VERSION)
+ /* XXX No option headers supported */
ip_hdr_len = sizeof(struct ip6_hdr);
- break;
+ else {
+ RTE_LOG(ERR, IPSEC_ESP, "invalid IP packet type %d\n",
+ ip4->ip_v);
+ return -EINVAL;
}
payload_len = rte_pktmbuf_pkt_len(m) - ip_hdr_len -
sizeof(struct esp_hdr) - sa->iv_len - sa->digest_len;
if ((payload_len & (sa->block_size - 1)) || (payload_len <= 0)) {
- RTE_LOG(DEBUG, IPSEC_ESP, "payload %d not multiple of %u\n",
+ RTE_LOG_DP(DEBUG, IPSEC_ESP, "payload %d not multiple of %u\n",
payload_len, sa->block_size);
return -EINVAL;
}
- sym_cop = (struct rte_crypto_sym_op *)(cop + 1);
+ sym_cop = get_sym_cop(cop);
sym_cop->m_src = m;
sym_cop->cipher.data.offset = ip_hdr_len + sizeof(struct esp_hdr) +
sa->iv_len;
sym_cop->cipher.data.length = payload_len;
- sym_cop->cipher.iv.data = rte_pktmbuf_mtod_offset(m, void*,
- ip_hdr_len + sizeof(struct esp_hdr));
- sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(m,
- ip_hdr_len + sizeof(struct esp_hdr));
- sym_cop->cipher.iv.length = sa->iv_len;
+ struct cnt_blk *icb;
+ uint8_t *aad;
+ uint8_t *iv = RTE_PTR_ADD(ip4, ip_hdr_len + sizeof(struct esp_hdr));
+ uint8_t *iv_ptr = rte_crypto_op_ctod_offset(cop,
+ uint8_t *, IV_OFFSET);
+
+ switch (sa->cipher_algo) {
+ case RTE_CRYPTO_CIPHER_NULL:
+ case RTE_CRYPTO_CIPHER_AES_CBC:
+ /* Copy IV at the end of crypto operation */
+ rte_memcpy(iv_ptr, iv, sa->iv_len);
+ sym_cop->cipher.iv.offset = IV_OFFSET;
+ sym_cop->cipher.iv.length = sa->iv_len;
+ break;
+ case RTE_CRYPTO_CIPHER_AES_CTR:
+ case RTE_CRYPTO_CIPHER_AES_GCM:
+ icb = get_cnt_blk(m);
+ icb->salt = sa->salt;
+ memcpy(&icb->iv, iv, 8);
+ icb->cnt = rte_cpu_to_be_32(1);
+ sym_cop->cipher.iv.offset = IV_OFFSET;
+ sym_cop->cipher.iv.length = 16;
+ break;
+ default:
+ RTE_LOG(ERR, IPSEC_ESP, "unsupported cipher algorithm %u\n",
+ sa->cipher_algo);
+ return -EINVAL;
+ }
- sym_cop->auth.data.offset = ip_hdr_len;
- sym_cop->auth.data.length = sizeof(struct esp_hdr) +
- sa->iv_len + payload_len;
+ switch (sa->auth_algo) {
+ case RTE_CRYPTO_AUTH_NULL:
+ case RTE_CRYPTO_AUTH_SHA1_HMAC:
+ case RTE_CRYPTO_AUTH_SHA256_HMAC:
+ sym_cop->auth.data.offset = ip_hdr_len;
+ sym_cop->auth.data.length = sizeof(struct esp_hdr) +
+ sa->iv_len + payload_len;
+ break;
+ case RTE_CRYPTO_AUTH_AES_GCM:
+ aad = get_aad(m);
+ memcpy(aad, iv - sizeof(struct esp_hdr), 8);
+ sym_cop->auth.aad.data = aad;
+ sym_cop->auth.aad.phys_addr = rte_pktmbuf_mtophys_offset(m,
+ aad - rte_pktmbuf_mtod(m, uint8_t *));
+ sym_cop->auth.aad.length = 8;
+ break;
+ default:
+ RTE_LOG(ERR, IPSEC_ESP, "unsupported auth algorithm %u\n",
+ sa->auth_algo);
+ return -EINVAL;
+ }
sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(m, void*,
rte_pktmbuf_pkt_len(m) - sa->digest_len);
esp_inbound_post(struct rte_mbuf *m, struct ipsec_sa *sa,
struct rte_crypto_op *cop)
{
+ struct ip *ip4, *ip;
+ struct ip6_hdr *ip6;
uint8_t *nexthdr, *pad_len;
uint8_t *padding;
uint16_t i;
RTE_ASSERT(cop != NULL);
if (cop->status != RTE_CRYPTO_OP_STATUS_SUCCESS) {
- RTE_LOG(ERR, IPSEC_ESP, "Failed crypto op\n");
+ RTE_LOG(ERR, IPSEC_ESP, "failed crypto op\n");
return -1;
}
padding = pad_len - *pad_len;
for (i = 0; i < *pad_len; i++) {
if (padding[i] != i + 1) {
- RTE_LOG(ERR, IPSEC_ESP, "invalid pad_len field\n");
+ RTE_LOG(ERR, IPSEC_ESP, "invalid padding\n");
return -EINVAL;
}
}
return -EINVAL;
}
- ipip_inbound(m, sizeof(struct esp_hdr) + sa->iv_len);
+ if (unlikely(sa->flags == TRANSPORT)) {
+ ip = rte_pktmbuf_mtod(m, struct ip *);
+ ip4 = (struct ip *)rte_pktmbuf_adj(m,
+ sizeof(struct esp_hdr) + sa->iv_len);
+ if (likely(ip->ip_v == IPVERSION)) {
+ memmove(ip4, ip, ip->ip_hl * 4);
+ ip4->ip_p = *nexthdr;
+ ip4->ip_len = htons(rte_pktmbuf_data_len(m));
+ } else {
+ ip6 = (struct ip6_hdr *)ip4;
+ /* XXX No option headers supported */
+ memmove(ip6, ip, sizeof(struct ip6_hdr));
+ ip6->ip6_nxt = *nexthdr;
+ ip6->ip6_plen = htons(rte_pktmbuf_data_len(m));
+ }
+ } else
+ ipip_inbound(m, sizeof(struct esp_hdr) + sa->iv_len);
return 0;
}
esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
struct rte_crypto_op *cop)
{
- uint16_t pad_payload_len, pad_len, ip_hdr_len;
struct ip *ip4;
struct ip6_hdr *ip6;
- struct esp_hdr *esp;
- int32_t i;
- char *padding;
+ struct esp_hdr *esp = NULL;
+ uint8_t *padding, *new_ip, nlp;
struct rte_crypto_sym_op *sym_cop;
+ int32_t i;
+ uint16_t pad_payload_len, pad_len, ip_hdr_len;
RTE_ASSERT(m != NULL);
RTE_ASSERT(sa != NULL);
RTE_ASSERT(cop != NULL);
- /* Payload length */
- pad_payload_len = RTE_ALIGN_CEIL(rte_pktmbuf_pkt_len(m) + 2,
- sa->block_size);
- pad_len = pad_payload_len - rte_pktmbuf_pkt_len(m);
-
ip_hdr_len = 0;
- switch (sa->flags) {
- case IP4_TUNNEL:
+
+ ip4 = rte_pktmbuf_mtod(m, struct ip *);
+ if (likely(ip4->ip_v == IPVERSION)) {
+ if (unlikely(sa->flags == TRANSPORT)) {
+ ip_hdr_len = ip4->ip_hl * 4;
+ nlp = ip4->ip_p;
+ } else
+ nlp = IPPROTO_IPIP;
+ } else if (ip4->ip_v == IP6_VERSION) {
+ if (unlikely(sa->flags == TRANSPORT)) {
+ /* XXX No option headers supported */
+ ip_hdr_len = sizeof(struct ip6_hdr);
+ ip6 = (struct ip6_hdr *)ip4;
+ nlp = ip6->ip6_nxt;
+ } else
+ nlp = IPPROTO_IPV6;
+ } else {
+ RTE_LOG(ERR, IPSEC_ESP, "invalid IP packet type %d\n",
+ ip4->ip_v);
+ return -EINVAL;
+ }
+
+ /* Padded payload length */
+ pad_payload_len = RTE_ALIGN_CEIL(rte_pktmbuf_pkt_len(m) -
+ ip_hdr_len + 2, sa->block_size);
+ pad_len = pad_payload_len + ip_hdr_len - rte_pktmbuf_pkt_len(m);
+
+ RTE_ASSERT(sa->flags == IP4_TUNNEL || sa->flags == IP6_TUNNEL ||
+ sa->flags == TRANSPORT);
+
+ if (likely(sa->flags == IP4_TUNNEL))
ip_hdr_len = sizeof(struct ip);
- break;
- case IP6_TUNNEL:
+ else if (sa->flags == IP6_TUNNEL)
ip_hdr_len = sizeof(struct ip6_hdr);
- break;
+ else if (sa->flags != TRANSPORT) {
+ RTE_LOG(ERR, IPSEC_ESP, "Unsupported SA flags: 0x%x\n",
+ sa->flags);
+ return -EINVAL;
}
/* Check maximum packet size */
return -EINVAL;
}
- padding = rte_pktmbuf_append(m, pad_len + sa->digest_len);
+ padding = (uint8_t *)rte_pktmbuf_append(m, pad_len + sa->digest_len);
if (unlikely(padding == NULL)) {
RTE_LOG(ERR, IPSEC_ESP, "not enough mbuf trailing space\n");
return -ENOSPC;
&sa->src, &sa->dst);
esp = (struct esp_hdr *)(ip6 + 1);
break;
- default:
- RTE_LOG(ERR, IPSEC_ESP, "Unsupported SA flags: 0x%x\n",
- sa->flags);
- return -EINVAL;
+ case TRANSPORT:
+ new_ip = (uint8_t *)rte_pktmbuf_prepend(m,
+ sizeof(struct esp_hdr) + sa->iv_len);
+ memmove(new_ip, ip4, ip_hdr_len);
+ esp = (struct esp_hdr *)(new_ip + ip_hdr_len);
+ if (likely(ip4->ip_v == IPVERSION)) {
+ ip4 = (struct ip *)new_ip;
+ ip4->ip_p = IPPROTO_ESP;
+ ip4->ip_len = htons(rte_pktmbuf_data_len(m));
+ } else {
+ ip6 = (struct ip6_hdr *)new_ip;
+ ip6->ip6_nxt = IPPROTO_ESP;
+ ip6->ip6_plen = htons(rte_pktmbuf_data_len(m));
+ }
}
sa->seq++;
esp->spi = rte_cpu_to_be_32(sa->spi);
- esp->seq = rte_cpu_to_be_32(sa->seq);
+ esp->seq = rte_cpu_to_be_32((uint32_t)sa->seq);
- if (sa->cipher_algo == RTE_CRYPTO_CIPHER_AES_CBC)
- random_iv_u64((uint64_t *)(esp + 1), sa->iv_len);
+ uint64_t *iv = (uint64_t *)(esp + 1);
+
+ sym_cop = get_sym_cop(cop);
+ sym_cop->m_src = m;
+ switch (sa->cipher_algo) {
+ case RTE_CRYPTO_CIPHER_NULL:
+ case RTE_CRYPTO_CIPHER_AES_CBC:
+ memset(iv, 0, sa->iv_len);
+ sym_cop->cipher.data.offset = ip_hdr_len +
+ sizeof(struct esp_hdr);
+ sym_cop->cipher.data.length = pad_payload_len + sa->iv_len;
+ break;
+ case RTE_CRYPTO_CIPHER_AES_CTR:
+ case RTE_CRYPTO_CIPHER_AES_GCM:
+ *iv = sa->seq;
+ sym_cop->cipher.data.offset = ip_hdr_len +
+ sizeof(struct esp_hdr) + sa->iv_len;
+ sym_cop->cipher.data.length = pad_payload_len;
+ break;
+ default:
+ RTE_LOG(ERR, IPSEC_ESP, "unsupported cipher algorithm %u\n",
+ sa->cipher_algo);
+ return -EINVAL;
+ }
/* Fill pad_len using default sequential scheme */
for (i = 0; i < pad_len - 2; i++)
padding[i] = i + 1;
padding[pad_len - 2] = pad_len - 2;
-
- if (RTE_ETH_IS_IPV4_HDR(m->packet_type))
- padding[pad_len - 1] = IPPROTO_IPIP;
- else
- padding[pad_len - 1] = IPPROTO_IPV6;
-
- sym_cop = (struct rte_crypto_sym_op *)(cop + 1);
-
- sym_cop->m_src = m;
- sym_cop->cipher.data.offset = ip_hdr_len + sizeof(struct esp_hdr) +
- sa->iv_len;
- sym_cop->cipher.data.length = pad_payload_len;
-
- sym_cop->cipher.iv.data = rte_pktmbuf_mtod_offset(m, uint8_t *,
- ip_hdr_len + sizeof(struct esp_hdr));
- sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(m,
- ip_hdr_len + sizeof(struct esp_hdr));
- sym_cop->cipher.iv.length = sa->iv_len;
-
- sym_cop->auth.data.offset = ip_hdr_len;
- sym_cop->auth.data.length = sizeof(struct esp_hdr) + sa->iv_len +
- pad_payload_len;
+ padding[pad_len - 1] = nlp;
+
+ struct cnt_blk *icb = get_cnt_blk(m);
+ icb->salt = sa->salt;
+ icb->iv = sa->seq;
+ icb->cnt = rte_cpu_to_be_32(1);
+ sym_cop->cipher.iv.offset = IV_OFFSET;
+ sym_cop->cipher.iv.length = 16;
+
+ uint8_t *aad;
+
+ switch (sa->auth_algo) {
+ case RTE_CRYPTO_AUTH_NULL:
+ case RTE_CRYPTO_AUTH_SHA1_HMAC:
+ case RTE_CRYPTO_AUTH_SHA256_HMAC:
+ sym_cop->auth.data.offset = ip_hdr_len;
+ sym_cop->auth.data.length = sizeof(struct esp_hdr) +
+ sa->iv_len + pad_payload_len;
+ break;
+ case RTE_CRYPTO_AUTH_AES_GCM:
+ aad = get_aad(m);
+ memcpy(aad, esp, 8);
+ sym_cop->auth.aad.data = aad;
+ sym_cop->auth.aad.phys_addr = rte_pktmbuf_mtophys_offset(m,
+ aad - rte_pktmbuf_mtod(m, uint8_t *));
+ sym_cop->auth.aad.length = 8;
+ break;
+ default:
+ RTE_LOG(ERR, IPSEC_ESP, "unsupported auth algorithm %u\n",
+ sa->auth_algo);
+ return -EINVAL;
+ }
sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(m, uint8_t *,
rte_pktmbuf_pkt_len(m) - sa->digest_len);
git.droids-corp.org / dpdk.git / blobdiff