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36 #include <sys/types.h>
38 #include <netinet/in.h>
39 #include <netinet/ip.h>
40 #include <netinet/ip6.h>
44 #include <rte_common.h>
45 #include <rte_crypto.h>
46 #include <rte_cryptodev.h>
47 #include <rte_random.h>
54 esp_inbound(struct rte_mbuf *m, struct ipsec_sa *sa,
55 struct rte_crypto_op *cop)
58 struct rte_crypto_sym_op *sym_cop;
59 int32_t payload_len, ip_hdr_len;
61 RTE_ASSERT(m != NULL);
62 RTE_ASSERT(sa != NULL);
63 RTE_ASSERT(cop != NULL);
65 ip4 = rte_pktmbuf_mtod(m, struct ip *);
66 if (likely(ip4->ip_v == IPVERSION))
67 ip_hdr_len = ip4->ip_hl * 4;
68 else if (ip4->ip_v == IP6_VERSION)
69 /* XXX No option headers supported */
70 ip_hdr_len = sizeof(struct ip6_hdr);
72 RTE_LOG(ERR, IPSEC_ESP, "invalid IP packet type %d\n",
77 payload_len = rte_pktmbuf_pkt_len(m) - ip_hdr_len -
78 sizeof(struct esp_hdr) - sa->iv_len - sa->digest_len;
80 if ((payload_len & (sa->block_size - 1)) || (payload_len <= 0)) {
81 RTE_LOG(DEBUG, IPSEC_ESP, "payload %d not multiple of %u\n",
82 payload_len, sa->block_size);
86 sym_cop = get_sym_cop(cop);
89 sym_cop->cipher.data.offset = ip_hdr_len + sizeof(struct esp_hdr) +
91 sym_cop->cipher.data.length = payload_len;
95 uint8_t *iv = RTE_PTR_ADD(ip4, ip_hdr_len + sizeof(struct esp_hdr));
97 switch (sa->cipher_algo) {
98 case RTE_CRYPTO_CIPHER_NULL:
99 case RTE_CRYPTO_CIPHER_AES_CBC:
100 sym_cop->cipher.iv.data = iv;
101 sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(m,
102 ip_hdr_len + sizeof(struct esp_hdr));
103 sym_cop->cipher.iv.length = sa->iv_len;
105 case RTE_CRYPTO_CIPHER_AES_GCM:
106 icb = get_cnt_blk(m);
107 icb->salt = sa->salt;
108 memcpy(&icb->iv, iv, 8);
109 icb->cnt = rte_cpu_to_be_32(1);
110 sym_cop->cipher.iv.data = (uint8_t *)icb;
111 sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(m,
112 (uint8_t *)icb - rte_pktmbuf_mtod(m, uint8_t *));
113 sym_cop->cipher.iv.length = 16;
116 RTE_LOG(ERR, IPSEC_ESP, "unsupported cipher algorithm %u\n",
121 switch (sa->auth_algo) {
122 case RTE_CRYPTO_AUTH_NULL:
123 case RTE_CRYPTO_AUTH_SHA1_HMAC:
124 sym_cop->auth.data.offset = ip_hdr_len;
125 sym_cop->auth.data.length = sizeof(struct esp_hdr) +
126 sa->iv_len + payload_len;
128 case RTE_CRYPTO_AUTH_AES_GCM:
130 memcpy(aad, iv - sizeof(struct esp_hdr), 8);
131 sym_cop->auth.aad.data = aad;
132 sym_cop->auth.aad.phys_addr = rte_pktmbuf_mtophys_offset(m,
133 aad - rte_pktmbuf_mtod(m, uint8_t *));
134 sym_cop->auth.aad.length = 8;
137 RTE_LOG(ERR, IPSEC_ESP, "unsupported auth algorithm %u\n",
142 sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(m, void*,
143 rte_pktmbuf_pkt_len(m) - sa->digest_len);
144 sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(m,
145 rte_pktmbuf_pkt_len(m) - sa->digest_len);
146 sym_cop->auth.digest.length = sa->digest_len;
152 esp_inbound_post(struct rte_mbuf *m, struct ipsec_sa *sa,
153 struct rte_crypto_op *cop)
157 uint8_t *nexthdr, *pad_len;
161 RTE_ASSERT(m != NULL);
162 RTE_ASSERT(sa != NULL);
163 RTE_ASSERT(cop != NULL);
165 if (cop->status != RTE_CRYPTO_OP_STATUS_SUCCESS) {
166 RTE_LOG(ERR, IPSEC_ESP, "failed crypto op\n");
170 nexthdr = rte_pktmbuf_mtod_offset(m, uint8_t*,
171 rte_pktmbuf_pkt_len(m) - sa->digest_len - 1);
172 pad_len = nexthdr - 1;
174 padding = pad_len - *pad_len;
175 for (i = 0; i < *pad_len; i++) {
176 if (padding[i] != i + 1) {
177 RTE_LOG(ERR, IPSEC_ESP, "invalid padding\n");
182 if (rte_pktmbuf_trim(m, *pad_len + 2 + sa->digest_len)) {
183 RTE_LOG(ERR, IPSEC_ESP,
184 "failed to remove pad_len + digest\n");
188 if (unlikely(sa->flags == TRANSPORT)) {
189 ip = rte_pktmbuf_mtod(m, struct ip *);
190 ip4 = (struct ip *)rte_pktmbuf_adj(m,
191 sizeof(struct esp_hdr) + sa->iv_len);
192 if (likely(ip->ip_v == IPVERSION)) {
193 memmove(ip4, ip, ip->ip_hl * 4);
194 ip4->ip_p = *nexthdr;
195 ip4->ip_len = htons(rte_pktmbuf_data_len(m));
197 ip6 = (struct ip6_hdr *)ip4;
198 /* XXX No option headers supported */
199 memmove(ip6, ip, sizeof(struct ip6_hdr));
200 ip6->ip6_nxt = *nexthdr;
201 ip6->ip6_plen = htons(rte_pktmbuf_data_len(m));
204 ipip_inbound(m, sizeof(struct esp_hdr) + sa->iv_len);
210 esp_outbound(struct rte_mbuf *m, struct ipsec_sa *sa,
211 struct rte_crypto_op *cop)
215 struct esp_hdr *esp = NULL;
216 uint8_t *padding, *new_ip, nlp;
217 struct rte_crypto_sym_op *sym_cop;
219 uint16_t pad_payload_len, pad_len, ip_hdr_len;
221 RTE_ASSERT(m != NULL);
222 RTE_ASSERT(sa != NULL);
223 RTE_ASSERT(cop != NULL);
227 ip4 = rte_pktmbuf_mtod(m, struct ip *);
228 if (likely(ip4->ip_v == IPVERSION)) {
229 if (unlikely(sa->flags == TRANSPORT)) {
230 ip_hdr_len = ip4->ip_hl * 4;
234 } else if (ip4->ip_v == IP6_VERSION) {
235 if (unlikely(sa->flags == TRANSPORT)) {
236 /* XXX No option headers supported */
237 ip_hdr_len = sizeof(struct ip6_hdr);
238 ip6 = (struct ip6_hdr *)ip4;
243 RTE_LOG(ERR, IPSEC_ESP, "invalid IP packet type %d\n",
248 /* Padded payload length */
249 pad_payload_len = RTE_ALIGN_CEIL(rte_pktmbuf_pkt_len(m) -
250 ip_hdr_len + 2, sa->block_size);
251 pad_len = pad_payload_len + ip_hdr_len - rte_pktmbuf_pkt_len(m);
253 RTE_ASSERT(sa->flags == IP4_TUNNEL || sa->flags == IP6_TUNNEL ||
254 sa->flags == TRANSPORT);
256 if (likely(sa->flags == IP4_TUNNEL))
257 ip_hdr_len = sizeof(struct ip);
258 else if (sa->flags == IP6_TUNNEL)
259 ip_hdr_len = sizeof(struct ip6_hdr);
260 else if (sa->flags != TRANSPORT) {
261 RTE_LOG(ERR, IPSEC_ESP, "Unsupported SA flags: 0x%x\n",
266 /* Check maximum packet size */
267 if (unlikely(ip_hdr_len + sizeof(struct esp_hdr) + sa->iv_len +
268 pad_payload_len + sa->digest_len > IP_MAXPACKET)) {
269 RTE_LOG(ERR, IPSEC_ESP, "ipsec packet is too big\n");
273 padding = (uint8_t *)rte_pktmbuf_append(m, pad_len + sa->digest_len);
274 if (unlikely(padding == NULL)) {
275 RTE_LOG(ERR, IPSEC_ESP, "not enough mbuf trailing space\n");
278 rte_prefetch0(padding);
282 ip4 = ip4ip_outbound(m, sizeof(struct esp_hdr) + sa->iv_len,
284 esp = (struct esp_hdr *)(ip4 + 1);
287 ip6 = ip6ip_outbound(m, sizeof(struct esp_hdr) + sa->iv_len,
289 esp = (struct esp_hdr *)(ip6 + 1);
292 new_ip = (uint8_t *)rte_pktmbuf_prepend(m,
293 sizeof(struct esp_hdr) + sa->iv_len);
294 memmove(new_ip, ip4, ip_hdr_len);
295 esp = (struct esp_hdr *)(new_ip + ip_hdr_len);
296 if (likely(ip4->ip_v == IPVERSION)) {
297 ip4 = (struct ip *)new_ip;
298 ip4->ip_p = IPPROTO_ESP;
299 ip4->ip_len = htons(rte_pktmbuf_data_len(m));
301 ip6 = (struct ip6_hdr *)new_ip;
302 ip6->ip6_nxt = IPPROTO_ESP;
303 ip6->ip6_plen = htons(rte_pktmbuf_data_len(m));
308 esp->spi = rte_cpu_to_be_32(sa->spi);
309 esp->seq = rte_cpu_to_be_32((uint32_t)sa->seq);
311 uint64_t *iv = (uint64_t *)(esp + 1);
313 sym_cop = get_sym_cop(cop);
315 switch (sa->cipher_algo) {
316 case RTE_CRYPTO_CIPHER_NULL:
317 case RTE_CRYPTO_CIPHER_AES_CBC:
318 memset(iv, 0, sa->iv_len);
319 sym_cop->cipher.data.offset = ip_hdr_len +
320 sizeof(struct esp_hdr);
321 sym_cop->cipher.data.length = pad_payload_len + sa->iv_len;
323 case RTE_CRYPTO_CIPHER_AES_GCM:
325 sym_cop->cipher.data.offset = ip_hdr_len +
326 sizeof(struct esp_hdr) + sa->iv_len;
327 sym_cop->cipher.data.length = pad_payload_len;
330 RTE_LOG(ERR, IPSEC_ESP, "unsupported cipher algorithm %u\n",
335 /* Fill pad_len using default sequential scheme */
336 for (i = 0; i < pad_len - 2; i++)
338 padding[pad_len - 2] = pad_len - 2;
339 padding[pad_len - 1] = nlp;
341 struct cnt_blk *icb = get_cnt_blk(m);
342 icb->salt = sa->salt;
344 icb->cnt = rte_cpu_to_be_32(1);
345 sym_cop->cipher.iv.data = (uint8_t *)icb;
346 sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(m,
347 (uint8_t *)icb - rte_pktmbuf_mtod(m, uint8_t *));
348 sym_cop->cipher.iv.length = 16;
352 switch (sa->auth_algo) {
353 case RTE_CRYPTO_AUTH_NULL:
354 case RTE_CRYPTO_AUTH_SHA1_HMAC:
355 sym_cop->auth.data.offset = ip_hdr_len;
356 sym_cop->auth.data.length = sizeof(struct esp_hdr) +
357 sa->iv_len + pad_payload_len;
359 case RTE_CRYPTO_AUTH_AES_GCM:
362 sym_cop->auth.aad.data = aad;
363 sym_cop->auth.aad.phys_addr = rte_pktmbuf_mtophys_offset(m,
364 aad - rte_pktmbuf_mtod(m, uint8_t *));
365 sym_cop->auth.aad.length = 8;
368 RTE_LOG(ERR, IPSEC_ESP, "unsupported auth algorithm %u\n",
373 sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(m, uint8_t *,
374 rte_pktmbuf_pkt_len(m) - sa->digest_len);
375 sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(m,
376 rte_pktmbuf_pkt_len(m) - sa->digest_len);
377 sym_cop->auth.digest.length = sa->digest_len;
383 esp_outbound_post(struct rte_mbuf *m __rte_unused,
384 struct ipsec_sa *sa __rte_unused,
385 struct rte_crypto_op *cop)
387 RTE_ASSERT(m != NULL);
388 RTE_ASSERT(sa != NULL);
389 RTE_ASSERT(cop != NULL);
391 if (cop->status != RTE_CRYPTO_OP_STATUS_SUCCESS) {
392 RTE_LOG(ERR, IPSEC_ESP, "Failed crypto op\n");