[dpdk-dev] [PATCH 3/8] crypto/cnxk: add cn9k IPsec session related functions

[Archana Muniganti <marchana@marvell.com>]

Add helper functions useful in implementing IPsec outbound
and inbound session create apis.

Signed-off-by: Archana Muniganti <marchana@marvell.com>
Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
---
 drivers/crypto/cnxk/cn9k_cryptodev.c |   2 +
 drivers/crypto/cnxk/cn9k_ipsec.c     | 425 +++++++++++++++++++++++++++
 drivers/crypto/cnxk/cn9k_ipsec.h     |  29 ++
 drivers/crypto/cnxk/meson.build      |   1 +
 4 files changed, 457 insertions(+)
 create mode 100644 drivers/crypto/cnxk/cn9k_ipsec.c
 create mode 100644 drivers/crypto/cnxk/cn9k_ipsec.h

diff --git a/drivers/crypto/cnxk/cn9k_cryptodev.c b/drivers/crypto/cnxk/cn9k_cryptodev.c
index db2e085161..e60b352fac 100644
--- a/drivers/crypto/cnxk/cn9k_cryptodev.c
+++ b/drivers/crypto/cnxk/cn9k_cryptodev.c
@@ -12,6 +12,7 @@
 
 #include "cn9k_cryptodev.h"
 #include "cn9k_cryptodev_ops.h"
+#include "cn9k_ipsec.h"
 #include "cnxk_cryptodev.h"
 #include "cnxk_cryptodev_capabilities.h"
 #include "cnxk_cryptodev_sec.h"
@@ -92,6 +93,7 @@ cn9k_cpt_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 	cnxk_cpt_caps_populate(vf);
 
 	cn9k_cpt_set_enqdeq_fns(dev);
+	cn9k_sec_ops_override();
 
 	return 0;
 
diff --git a/drivers/crypto/cnxk/cn9k_ipsec.c b/drivers/crypto/cnxk/cn9k_ipsec.c
new file mode 100644
index 0000000000..dd02cc7764
--- /dev/null
+++ b/drivers/crypto/cnxk/cn9k_ipsec.c
@@ -0,0 +1,425 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#include <rte_cryptodev.h>
+#include <rte_security.h>
+#include <rte_security_driver.h>
+
+#include "cnxk_cryptodev.h"
+#include "cnxk_cryptodev_ops.h"
+#include "cnxk_ipsec.h"
+#include "cnxk_security.h"
+#include "cn9k_ipsec.h"
+
+#include "roc_api.h"
+
+static inline int
+cn9k_cpt_enq_sa_write(struct cn9k_ipsec_sa *sa, struct cnxk_cpt_qp *qp,
+		      uint8_t opcode, size_t ctx_len)
+{
+	uint64_t lmtline = qp->lmtline.lmt_base;
+	uint64_t io_addr = qp->lmtline.io_addr;
+	uint64_t lmt_status, time_out;
+	struct cpt_cn9k_res_s *res;
+	struct cpt_inst_s inst;
+	uint64_t *mdata;
+	int ret = 0;
+
+	if (unlikely(rte_mempool_get(qp->meta_info.pool, (void **)&mdata) < 0))
+		return -ENOMEM;
+
+	res = (struct cpt_cn9k_res_s *)RTE_PTR_ALIGN(mdata, 16);
+	res->compcode = CPT_COMP_NOT_DONE;
+
+	inst.w4.s.opcode_major = opcode;
+	inst.w4.s.opcode_minor = ctx_len >> 3;
+	inst.w4.s.param1 = 0;
+	inst.w4.s.param2 = 0;
+	inst.w4.s.dlen = ctx_len;
+	inst.dptr = rte_mempool_virt2iova(sa);
+	inst.rptr = 0;
+	inst.w7.s.cptr = rte_mempool_virt2iova(sa);
+	inst.w7.s.egrp = ROC_CPT_DFLT_ENG_GRP_SE;
+
+	inst.w0.u64 = 0;
+	inst.w2.u64 = 0;
+	inst.w3.u64 = 0;
+	inst.res_addr = rte_mempool_virt2iova(res);
+
+	rte_io_wmb();
+
+	do {
+		/* Copy CPT command to LMTLINE */
+		roc_lmt_mov((void *)lmtline, &inst, 2);
+		lmt_status = roc_lmt_submit_ldeor(io_addr);
+	} while (lmt_status == 0);
+
+	time_out = rte_get_timer_cycles() +
+		   DEFAULT_COMMAND_TIMEOUT * rte_get_timer_hz();
+
+	while (res->compcode == CPT_COMP_NOT_DONE) {
+		if (rte_get_timer_cycles() > time_out) {
+			rte_mempool_put(qp->meta_info.pool, mdata);
+			plt_err("Request timed out");
+			return -ETIMEDOUT;
+		}
+		rte_io_rmb();
+	}
+
+	if (unlikely(res->compcode != CPT_COMP_GOOD)) {
+		ret = res->compcode;
+		switch (ret) {
+		case CPT_COMP_INSTERR:
+			plt_err("Request failed with instruction error");
+			break;
+		case CPT_COMP_FAULT:
+			plt_err("Request failed with DMA fault");
+			break;
+		case CPT_COMP_HWERR:
+			plt_err("Request failed with hardware error");
+			break;
+		default:
+			plt_err("Request failed with unknown hardware "
+				"completion code : 0x%x",
+				ret);
+		}
+		ret = -EINVAL;
+		goto mempool_put;
+	}
+
+	if (unlikely(res->uc_compcode != ROC_IE_ON_UCC_SUCCESS)) {
+		ret = res->uc_compcode;
+		switch (ret) {
+		case ROC_IE_ON_AUTH_UNSUPPORTED:
+			plt_err("Invalid auth type");
+			break;
+		case ROC_IE_ON_ENCRYPT_UNSUPPORTED:
+			plt_err("Invalid encrypt type");
+			break;
+		default:
+			plt_err("Request failed with unknown microcode "
+				"completion code : 0x%x",
+				ret);
+		}
+		ret = -ENOTSUP;
+	}
+
+mempool_put:
+	rte_mempool_put(qp->meta_info.pool, mdata);
+	return ret;
+}
+
+static inline int
+ipsec_sa_ctl_set(struct rte_security_ipsec_xform *ipsec,
+		 struct rte_crypto_sym_xform *crypto_xform,
+		 struct roc_ie_on_sa_ctl *ctl)
+{
+	struct rte_crypto_sym_xform *cipher_xform, *auth_xform;
+	int aes_key_len;
+
+	if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_EGRESS) {
+		ctl->direction = ROC_IE_SA_DIR_OUTBOUND;
+		cipher_xform = crypto_xform;
+		auth_xform = crypto_xform->next;
+	} else if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS) {
+		ctl->direction = ROC_IE_SA_DIR_INBOUND;
+		auth_xform = crypto_xform;
+		cipher_xform = crypto_xform->next;
+	} else {
+		return -EINVAL;
+	}
+
+	if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
+		if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4)
+			ctl->outer_ip_ver = ROC_IE_SA_IP_VERSION_4;
+		else if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV6)
+			ctl->outer_ip_ver = ROC_IE_SA_IP_VERSION_6;
+		else
+			return -EINVAL;
+	}
+
+	ctl->inner_ip_ver = ctl->outer_ip_ver;
+
+	if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT)
+		ctl->ipsec_mode = ROC_IE_SA_MODE_TRANSPORT;
+	else if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL)
+		ctl->ipsec_mode = ROC_IE_SA_MODE_TUNNEL;
+	else
+		return -EINVAL;
+
+	if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_AH)
+		ctl->ipsec_proto = ROC_IE_SA_PROTOCOL_AH;
+	else if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP)
+		ctl->ipsec_proto = ROC_IE_SA_PROTOCOL_ESP;
+	else
+		return -EINVAL;
+
+	if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
+		if (crypto_xform->aead.algo == RTE_CRYPTO_AEAD_AES_GCM) {
+			ctl->enc_type = ROC_IE_ON_SA_ENC_AES_GCM;
+			aes_key_len = crypto_xform->aead.key.length;
+		} else {
+			return -ENOTSUP;
+		}
+	} else if (cipher_xform->cipher.algo == RTE_CRYPTO_CIPHER_AES_CBC) {
+		ctl->enc_type = ROC_IE_ON_SA_ENC_AES_CBC;
+		aes_key_len = cipher_xform->cipher.key.length;
+	} else {
+		return -ENOTSUP;
+	}
+
+	switch (aes_key_len) {
+	case 16:
+		ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_128;
+		break;
+	case 24:
+		ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_192;
+		break;
+	case 32:
+		ctl->aes_key_len = ROC_IE_SA_AES_KEY_LEN_256;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (crypto_xform->type != RTE_CRYPTO_SYM_XFORM_AEAD) {
+		switch (auth_xform->auth.algo) {
+		case RTE_CRYPTO_AUTH_NULL:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_NULL;
+			break;
+		case RTE_CRYPTO_AUTH_MD5_HMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_MD5;
+			break;
+		case RTE_CRYPTO_AUTH_SHA1_HMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA1;
+			break;
+		case RTE_CRYPTO_AUTH_SHA224_HMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA2_224;
+			break;
+		case RTE_CRYPTO_AUTH_SHA256_HMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA2_256;
+			break;
+		case RTE_CRYPTO_AUTH_SHA384_HMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA2_384;
+			break;
+		case RTE_CRYPTO_AUTH_SHA512_HMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_SHA2_512;
+			break;
+		case RTE_CRYPTO_AUTH_AES_GMAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_AES_GMAC;
+			break;
+		case RTE_CRYPTO_AUTH_AES_XCBC_MAC:
+			ctl->auth_type = ROC_IE_ON_SA_AUTH_AES_XCBC_128;
+			break;
+		default:
+			return -ENOTSUP;
+		}
+	}
+
+	if (ipsec->options.esn)
+		ctl->esn_en = 1;
+
+	if (ipsec->options.udp_encap == 1)
+		ctl->encap_type = ROC_IE_ON_SA_ENCAP_UDP;
+
+	ctl->spi = rte_cpu_to_be_32(ipsec->spi);
+
+	rte_io_wmb();
+
+	ctl->valid = 1;
+
+	return 0;
+}
+
+static inline int
+fill_ipsec_common_sa(struct rte_security_ipsec_xform *ipsec,
+		     struct rte_crypto_sym_xform *crypto_xform,
+		     struct roc_ie_on_common_sa *common_sa)
+{
+	struct rte_crypto_sym_xform *cipher_xform;
+	const uint8_t *cipher_key;
+	int cipher_key_len = 0;
+	int ret;
+
+	if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS)
+		cipher_xform = crypto_xform->next;
+	else
+		cipher_xform = crypto_xform;
+
+	ret = ipsec_sa_ctl_set(ipsec, crypto_xform, &common_sa->ctl);
+	if (ret)
+		return ret;
+
+	if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
+		if (crypto_xform->aead.algo == RTE_CRYPTO_AEAD_AES_GCM)
+			memcpy(common_sa->iv.gcm.nonce, &ipsec->salt, 4);
+		cipher_key = crypto_xform->aead.key.data;
+		cipher_key_len = crypto_xform->aead.key.length;
+	} else {
+		cipher_key = cipher_xform->cipher.key.data;
+		cipher_key_len = cipher_xform->cipher.key.length;
+	}
+
+	if (cipher_key_len != 0)
+		memcpy(common_sa->cipher_key, cipher_key, cipher_key_len);
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static int
+cn9k_ipsec_outb_sa_create(struct cnxk_cpt_qp *qp,
+			  struct rte_security_ipsec_xform *ipsec,
+			  struct rte_crypto_sym_xform *crypto_xform,
+			  struct rte_security_session *sec_sess)
+{
+	RTE_SET_USED(qp);
+	RTE_SET_USED(ipsec);
+	RTE_SET_USED(crypto_xform);
+	RTE_SET_USED(sec_sess);
+
+	return 0;
+}
+
+static int
+cn9k_ipsec_inb_sa_create(struct cnxk_cpt_qp *qp,
+			 struct rte_security_ipsec_xform *ipsec,
+			 struct rte_crypto_sym_xform *crypto_xform,
+			 struct rte_security_session *sec_sess)
+{
+	RTE_SET_USED(qp);
+	RTE_SET_USED(ipsec);
+	RTE_SET_USED(crypto_xform);
+	RTE_SET_USED(sec_sess);
+
+	return 0;
+}
+
+static inline int
+cn9k_ipsec_xform_verify(struct rte_security_ipsec_xform *ipsec)
+{
+	RTE_SET_USED(ipsec);
+
+	return 0;
+}
+
+static int
+cn9k_ipsec_session_create(void *dev,
+			  struct rte_security_ipsec_xform *ipsec_xform,
+			  struct rte_crypto_sym_xform *crypto_xform,
+			  struct rte_security_session *sess)
+{
+	struct rte_cryptodev *crypto_dev = dev;
+	struct cnxk_cpt_qp *qp;
+	int ret;
+
+	qp = crypto_dev->data->queue_pairs[0];
+	if (qp == NULL) {
+		plt_err("CPT queue pairs need to be setup for creating security"
+			" session");
+		return -EPERM;
+	}
+
+	ret = cnxk_ipsec_xform_verify(ipsec_xform, crypto_xform);
+	if (ret)
+		return ret;
+
+	ret = cn9k_ipsec_xform_verify(ipsec_xform);
+	if (ret)
+		return ret;
+
+	if (ipsec_xform->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS)
+		return cn9k_ipsec_inb_sa_create(qp, ipsec_xform, crypto_xform,
+						sess);
+	else
+		return cn9k_ipsec_outb_sa_create(qp, ipsec_xform, crypto_xform,
+						 sess);
+}
+
+static int
+cn9k_sec_session_create(void *device, struct rte_security_session_conf *conf,
+			struct rte_security_session *sess,
+			struct rte_mempool *mempool)
+{
+	struct cn9k_sec_session *priv;
+	int ret;
+
+	if (conf->action_type != RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL)
+		return -EINVAL;
+
+	if (rte_mempool_get(mempool, (void **)&priv)) {
+		plt_err("Could not allocate security session private data");
+		return -ENOMEM;
+	}
+
+	memset(priv, 0, sizeof(*priv));
+
+	set_sec_session_private_data(sess, priv);
+
+	if (conf->protocol != RTE_SECURITY_PROTOCOL_IPSEC) {
+		ret = -ENOTSUP;
+		goto mempool_put;
+	}
+
+	ret = cn9k_ipsec_session_create(device, &conf->ipsec,
+					conf->crypto_xform, sess);
+	if (ret)
+		goto mempool_put;
+
+	return 0;
+
+mempool_put:
+	rte_mempool_put(mempool, priv);
+	set_sec_session_private_data(sess, NULL);
+	return ret;
+}
+
+static int
+cn9k_sec_session_destroy(void *device __rte_unused,
+			 struct rte_security_session *sess)
+{
+	struct roc_ie_on_outb_sa *out_sa;
+	struct cn9k_sec_session *priv;
+	struct rte_mempool *sess_mp;
+	struct roc_ie_on_sa_ctl *ctl;
+	struct cn9k_ipsec_sa *sa;
+
+	priv = get_sec_session_private_data(sess);
+	if (priv == NULL)
+		return 0;
+
+	sa = &priv->sa;
+	out_sa = &sa->out_sa;
+
+	ctl = &out_sa->common_sa.ctl;
+	ctl->valid = 0;
+
+	rte_io_wmb();
+
+	sess_mp = rte_mempool_from_obj(priv);
+
+	memset(priv, 0, sizeof(*priv));
+
+	set_sec_session_private_data(sess, NULL);
+	rte_mempool_put(sess_mp, priv);
+
+	return 0;
+}
+
+static unsigned int
+cn9k_sec_session_get_size(void *device __rte_unused)
+{
+	return sizeof(struct cn9k_sec_session);
+}
+
+/* Update platform specific security ops */
+void
+cn9k_sec_ops_override(void)
+{
+	/* Update platform specific ops */
+	cnxk_sec_ops.session_create = cn9k_sec_session_create;
+	cnxk_sec_ops.session_destroy = cn9k_sec_session_destroy;
+	cnxk_sec_ops.session_get_size = cn9k_sec_session_get_size;
+}
diff --git a/drivers/crypto/cnxk/cn9k_ipsec.h b/drivers/crypto/cnxk/cn9k_ipsec.h
new file mode 100644
index 0000000000..0fe78df49b
--- /dev/null
+++ b/drivers/crypto/cnxk/cn9k_ipsec.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2021 Marvell.
+ */
+
+#ifndef __CN9K_IPSEC_H__
+#define __CN9K_IPSEC_H__
+
+#include "cnxk_ipsec.h"
+
+struct cn9k_ipsec_sa {
+	union {
+		/** Inbound SA */
+		struct roc_ie_on_inb_sa in_sa;
+		/** Outbound SA */
+		struct roc_ie_on_outb_sa out_sa;
+	};
+	/** IPsec SA direction */
+	enum rte_security_ipsec_sa_direction dir;
+	/** Pre-populated CPT inst words */
+	struct cnxk_cpt_inst_tmpl inst;
+};
+
+struct cn9k_sec_session {
+	struct cn9k_ipsec_sa sa;
+} __rte_cache_aligned;
+
+void cn9k_sec_ops_override(void);
+
+#endif /* __CN9K_IPSEC_H__ */
diff --git a/drivers/crypto/cnxk/meson.build b/drivers/crypto/cnxk/meson.build
index e076783629..e40d132f80 100644
--- a/drivers/crypto/cnxk/meson.build
+++ b/drivers/crypto/cnxk/meson.build
@@ -11,6 +11,7 @@ endif
 sources = files(
         'cn9k_cryptodev.c',
         'cn9k_cryptodev_ops.c',
+        'cn9k_ipsec.c',
         'cn10k_cryptodev.c',
         'cn10k_cryptodev_ops.c',
         'cn10k_ipsec.c',
-- 
2.22.0