crypto/cnxk: support lookaside IPsec AES-CTR

[dpdk.git] / drivers / crypto / cnxk / cn9k_ipsec_la_ops.h

diff --git a/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h b/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
index b7a88e1..2dc8913 100644 (file)
--- a/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
+++ b/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
@@ -6,9 +6,11 @@
 #define __CN9K_IPSEC_LA_OPS_H__
 
 #include <rte_crypto_sym.h>
+#include <rte_esp.h>
 #include <rte_security.h>
 
 #include "cn9k_ipsec.h"
+#include "cnxk_security_ar.h"
 
 static __rte_always_inline int32_t
 ipsec_po_out_rlen_get(struct cn9k_ipsec_sa *sa, uint32_t plen)
@@ -21,6 +23,53 @@ ipsec_po_out_rlen_get(struct cn9k_ipsec_sa *sa, uint32_t plen)
        return sa->rlens.partial_len + enc_payload_len;
 }
 
+static __rte_always_inline int
+ipsec_antireplay_check(struct cn9k_ipsec_sa *sa, uint32_t win_sz,
+                      struct rte_mbuf *m)
+{
+       uint32_t esn_low = 0, esn_hi = 0, seql = 0, seqh = 0;
+       struct roc_ie_on_common_sa *common_sa;
+       struct roc_ie_on_inb_sa *in_sa;
+       struct roc_ie_on_sa_ctl *ctl;
+       uint64_t seq_in_sa, seq = 0;
+       struct rte_esp_hdr *esp;
+       uint8_t esn;
+       int ret;
+
+       in_sa = &sa->in_sa;
+       common_sa = &in_sa->common_sa;
+       ctl = &common_sa->ctl;
+
+       esn = ctl->esn_en;
+       esn_low = rte_be_to_cpu_32(common_sa->esn_low);
+       esn_hi = rte_be_to_cpu_32(common_sa->esn_hi);
+
+       esp = rte_pktmbuf_mtod_offset(m, void *, sizeof(struct rte_ipv4_hdr));
+       seql = rte_be_to_cpu_32(esp->seq);
+
+       if (!esn) {
+               seq = (uint64_t)seql;
+       } else {
+               seqh = cnxk_on_anti_replay_get_seqh(win_sz, seql, esn_hi,
+                                                   esn_low);
+               seq = ((uint64_t)seqh << 32) | seql;
+       }
+
+       if (unlikely(seq == 0))
+               return IPSEC_ANTI_REPLAY_FAILED;
+
+       ret = cnxk_on_anti_replay_check(seq, &sa->ar, win_sz);
+       if (esn && !ret) {
+               seq_in_sa = ((uint64_t)esn_hi << 32) | esn_low;
+               if (seq > seq_in_sa) {
+                       common_sa->esn_low = rte_cpu_to_be_32(seql);
+                       common_sa->esn_hi = rte_cpu_to_be_32(seqh);
+               }
+       }
+
+       return ret;
+}
+
 static __rte_always_inline int
 process_outb_sa(struct rte_crypto_op *cop, struct cn9k_ipsec_sa *sa,
                struct cpt_inst_s *inst)
@@ -78,6 +127,15 @@ process_inb_sa(struct rte_crypto_op *cop, struct cn9k_ipsec_sa *sa,
 {
        struct rte_crypto_sym_op *sym_op = cop->sym;
        struct rte_mbuf *m_src = sym_op->m_src;
+       int ret;
+
+       if (sa->replay_win_sz) {
+               ret = ipsec_antireplay_check(sa, sa->replay_win_sz, m_src);
+               if (unlikely(ret)) {
+                       plt_dp_err("Anti replay check failed");
+                       return ret;
+               }
+       }
 
        /* Prepare CPT instruction */
        inst->w4.u64 = sa->inst.w4 | rte_pktmbuf_pkt_len(m_src);