From 41a18d8b9631231e1f7de8b5afdf9870e2b41e38 Mon Sep 17 00:00:00 2001 From: Ankur Dwivedi Date: Tue, 4 Feb 2020 16:47:24 +0530 Subject: [PATCH] net/octeontx2: add inline IPsec Tx Adding pre-processing required for inline IPsec outbound packets. Signed-off-by: Ankur Dwivedi Signed-off-by: Anoob Joseph Signed-off-by: Archana Muniganti Signed-off-by: Tejasree Kondoj Signed-off-by: Vamsi Attunuru Acked-by: Akhil Goyal --- drivers/event/octeontx2/otx2_worker.h | 6 + drivers/net/octeontx2/otx2_ethdev_sec.c | 82 ++++++++++ drivers/net/octeontx2/otx2_ethdev_sec.h | 19 +++ drivers/net/octeontx2/otx2_ethdev_sec_tx.h | 181 +++++++++++++++++++++ 4 files changed, 288 insertions(+) create mode 100644 drivers/net/octeontx2/otx2_ethdev_sec_tx.h diff --git a/drivers/event/octeontx2/otx2_worker.h b/drivers/event/octeontx2/otx2_worker.h index 7d161c85ee..5f5aa87466 100644 --- a/drivers/event/octeontx2/otx2_worker.h +++ b/drivers/event/octeontx2/otx2_worker.h @@ -10,6 +10,7 @@ #include #include "otx2_evdev.h" +#include "otx2_ethdev_sec_tx.h" /* SSO Operations */ @@ -281,6 +282,11 @@ otx2_ssogws_event_tx(struct otx2_ssogws *ws, struct rte_event ev[], const struct otx2_eth_txq *txq = otx2_ssogws_xtract_meta(m); rte_prefetch_non_temporal(txq); + + if ((flags & NIX_TX_OFFLOAD_SECURITY_F) && + (m->ol_flags & PKT_TX_SEC_OFFLOAD)) + return otx2_sec_event_tx(ws, ev, m, txq, flags); + /* Perform header writes before barrier for TSO */ otx2_nix_xmit_prepare_tso(m, flags); otx2_ssogws_order(ws, !ev->sched_type); diff --git a/drivers/net/octeontx2/otx2_ethdev_sec.c b/drivers/net/octeontx2/otx2_ethdev_sec.c index 4b219b31c4..9ea0dc4996 100644 --- a/drivers/net/octeontx2/otx2_ethdev_sec.c +++ b/drivers/net/octeontx2/otx2_ethdev_sec.c @@ -3,12 +3,15 @@ */ #include +#include #include #include +#include #include #include #include #include +#include #include "otx2_common.h" #include "otx2_cryptodev_qp.h" @@ -19,6 +22,15 @@ #define ETH_SEC_MAX_PKT_LEN 1450 +#define AH_HDR_LEN 12 +#define AES_GCM_IV_LEN 8 +#define AES_GCM_MAC_LEN 16 +#define AES_CBC_IV_LEN 16 +#define SHA1_HMAC_LEN 12 + +#define AES_GCM_ROUNDUP_BYTE_LEN 4 +#define AES_CBC_ROUNDUP_BYTE_LEN 16 + struct eth_sec_tag_const { RTE_STD_C11 union { @@ -214,6 +226,60 @@ in_sa_get(uint16_t port, int sa_index) return sa + sa_index; } +static int +ipsec_sa_const_set(struct rte_security_ipsec_xform *ipsec, + struct rte_crypto_sym_xform *xform, + struct otx2_sec_session_ipsec_ip *sess) +{ + struct rte_crypto_sym_xform *cipher_xform, *auth_xform; + + sess->partial_len = sizeof(struct rte_ipv4_hdr); + + if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP) { + sess->partial_len += sizeof(struct rte_esp_hdr); + sess->roundup_len = sizeof(struct rte_esp_tail); + } else if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_AH) { + sess->partial_len += AH_HDR_LEN; + } else { + return -EINVAL; + } + + if (ipsec->options.udp_encap) + sess->partial_len += sizeof(struct rte_udp_hdr); + + if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) { + if (xform->aead.algo == RTE_CRYPTO_AEAD_AES_GCM) { + sess->partial_len += AES_GCM_IV_LEN; + sess->partial_len += AES_GCM_MAC_LEN; + sess->roundup_byte = AES_GCM_ROUNDUP_BYTE_LEN; + } + return 0; + } + + if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_EGRESS) { + cipher_xform = xform; + auth_xform = xform->next; + } else if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS) { + auth_xform = xform; + cipher_xform = xform->next; + } else { + return -EINVAL; + } + if (cipher_xform->cipher.algo == RTE_CRYPTO_CIPHER_AES_CBC) { + sess->partial_len += AES_CBC_IV_LEN; + sess->roundup_byte = AES_CBC_ROUNDUP_BYTE_LEN; + } else { + return -EINVAL; + } + + if (auth_xform->auth.algo == RTE_CRYPTO_AUTH_SHA1_HMAC) + sess->partial_len += SHA1_HMAC_LEN; + else + return -EINVAL; + + return 0; +} + static int hmac_init(struct otx2_ipsec_fp_sa_ctl *ctl, struct otx2_cpt_qp *qp, const uint8_t *auth_key, int len, uint8_t *hmac_key) @@ -300,6 +366,7 @@ eth_sec_ipsec_out_sess_create(struct rte_eth_dev *eth_dev, struct otx2_ipsec_fp_sa_ctl *ctl; struct otx2_ipsec_fp_out_sa *sa; struct otx2_sec_session *priv; + struct otx2_cpt_inst_s inst; struct otx2_cpt_qp *qp; priv = get_sec_session_private_data(sec_sess); @@ -314,6 +381,12 @@ eth_sec_ipsec_out_sess_create(struct rte_eth_dev *eth_dev, memset(sess, 0, sizeof(struct otx2_sec_session_ipsec_ip)); + sess->seq = 1; + + ret = ipsec_sa_const_set(ipsec, crypto_xform, sess); + if (ret < 0) + return ret; + if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) memcpy(sa->nonce, &ipsec->salt, 4); @@ -323,6 +396,9 @@ eth_sec_ipsec_out_sess_create(struct rte_eth_dev *eth_dev, } if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) { + /* Start ip id from 1 */ + sess->ip_id = 1; + if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4) { memcpy(&sa->ip_src, &ipsec->tunnel.ipv4.src_ip, sizeof(struct in_addr)); @@ -357,6 +433,12 @@ eth_sec_ipsec_out_sess_create(struct rte_eth_dev *eth_dev, else return -EINVAL; + /* Determine word 7 of CPT instruction */ + inst.u64[7] = 0; + inst.egrp = OTX2_CPT_EGRP_INLINE_IPSEC; + inst.cptr = rte_mempool_virt2iova(sa); + sess->inst_w7 = inst.u64[7]; + /* Get CPT QP to be used for this SA */ ret = otx2_sec_idev_tx_cpt_qp_get(port, &qp); if (ret) diff --git a/drivers/net/octeontx2/otx2_ethdev_sec.h b/drivers/net/octeontx2/otx2_ethdev_sec.h index 87342ef703..783e41d9e2 100644 --- a/drivers/net/octeontx2/otx2_ethdev_sec.h +++ b/drivers/net/octeontx2/otx2_ethdev_sec.h @@ -10,9 +10,13 @@ #include "otx2_ipsec_fp.h" #define OTX2_CPT_RES_ALIGN 16 +#define OTX2_NIX_SEND_DESC_ALIGN 16 +#define OTX2_CPT_INST_SIZE 64 #define OTX2_CPT_EGRP_INLINE_IPSEC 1 +#define OTX2_CPT_OP_INLINE_IPSEC_OUTB (0x40 | 0x25) +#define OTX2_CPT_OP_INLINE_IPSEC_INB (0x40 | 0x26) #define OTX2_CPT_OP_WRITE_HMAC_IPAD_OPAD (0x40 | 0x27) #define OTX2_SEC_CPT_COMP_GOOD 0x1 @@ -93,6 +97,21 @@ struct otx2_sec_session_ipsec_ip { /* CPT LF enqueue register address */ rte_iova_t cpt_nq_reg; + /* Pre calculated lengths and data for a session */ + uint8_t partial_len; + uint8_t roundup_len; + uint8_t roundup_byte; + uint16_t ip_id; + union { + uint64_t esn; + struct { + uint32_t seq; + uint32_t esn_hi; + }; + }; + + uint64_t inst_w7; + /* CPT QP used by SA */ struct otx2_cpt_qp *qp; }; diff --git a/drivers/net/octeontx2/otx2_ethdev_sec_tx.h b/drivers/net/octeontx2/otx2_ethdev_sec_tx.h new file mode 100644 index 0000000000..2e35a8c773 --- /dev/null +++ b/drivers/net/octeontx2/otx2_ethdev_sec_tx.h @@ -0,0 +1,181 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(C) 2020 Marvell International Ltd. + */ + +#ifndef __OTX2_ETHDEV_SEC_TX_H__ +#define __OTX2_ETHDEV_SEC_TX_H__ + +#include +#include + +#include "otx2_ethdev_sec.h" + +struct otx2_ipsec_fp_out_hdr { + uint32_t ip_id; + uint32_t seq; + uint8_t iv[16]; +}; + +static __rte_always_inline int32_t +otx2_ipsec_fp_out_rlen_get(struct otx2_sec_session_ipsec_ip *sess, + uint32_t plen) +{ + uint32_t enc_payload_len; + + enc_payload_len = RTE_ALIGN_CEIL(plen + sess->roundup_len, + sess->roundup_byte); + + return sess->partial_len + enc_payload_len; +} + +static __rte_always_inline void +otx2_ssogws_head_wait(struct otx2_ssogws *ws); + +static __rte_always_inline int +otx2_sec_event_tx(struct otx2_ssogws *ws, struct rte_event *ev, + struct rte_mbuf *m, const struct otx2_eth_txq *txq, + const uint32_t offload_flags) +{ + uint32_t dlen, rlen, desc_headroom, extend_head, extend_tail; + struct otx2_sec_session_ipsec_ip *sess; + struct otx2_ipsec_fp_out_hdr *hdr; + struct otx2_ipsec_fp_out_sa *sa; + uint64_t data_addr, desc_addr; + struct otx2_sec_session *priv; + struct otx2_cpt_inst_s inst; + uint64_t lmt_status; + char *data; + + struct desc { + struct otx2_cpt_res cpt_res __rte_aligned(OTX2_CPT_RES_ALIGN); + struct nix_send_hdr_s nix_hdr + __rte_aligned(OTX2_NIX_SEND_DESC_ALIGN); + union nix_send_sg_s nix_sg; + struct nix_iova_s nix_iova; + } *sd; + + priv = get_sec_session_private_data((void *)(m->udata64)); + sess = &priv->ipsec.ip; + sa = &sess->out_sa; + + RTE_ASSERT(sess->cpt_lmtline != NULL); + RTE_ASSERT(!(offload_flags & (NIX_TX_OFFLOAD_MBUF_NOFF_F | + NIX_TX_OFFLOAD_VLAN_QINQ_F))); + + dlen = rte_pktmbuf_pkt_len(m) + sizeof(*hdr) - RTE_ETHER_HDR_LEN; + rlen = otx2_ipsec_fp_out_rlen_get(sess, dlen - sizeof(*hdr)); + + RTE_BUILD_BUG_ON(OTX2_CPT_RES_ALIGN % OTX2_NIX_SEND_DESC_ALIGN); + RTE_BUILD_BUG_ON(sizeof(sd->cpt_res) % OTX2_NIX_SEND_DESC_ALIGN); + + extend_head = sizeof(*hdr); + extend_tail = rlen - dlen; + + desc_headroom = (OTX2_CPT_RES_ALIGN - 1) + sizeof(*sd); + + if (unlikely(!rte_pktmbuf_is_contiguous(m)) || + unlikely(rte_pktmbuf_headroom(m) < extend_head + desc_headroom) || + unlikely(rte_pktmbuf_tailroom(m) < extend_tail)) { + goto drop; + } + + /* + * Extend mbuf data to point to the expected packet buffer for NIX. + * This includes the Ethernet header followed by the encrypted IPsec + * payload + */ + rte_pktmbuf_append(m, extend_tail); + data = rte_pktmbuf_prepend(m, extend_head); + data_addr = rte_pktmbuf_mtophys(m); + + /* + * Move the Ethernet header, to insert otx2_ipsec_fp_out_hdr prior + * to the IP header + */ + memcpy(data, data + sizeof(*hdr), RTE_ETHER_HDR_LEN); + + hdr = (struct otx2_ipsec_fp_out_hdr *)(data + RTE_ETHER_HDR_LEN); + + if (sa->ctl.enc_type == OTX2_IPSEC_FP_SA_ENC_AES_GCM) { + /* AES-128-GCM */ + memcpy(hdr->iv, &sa->nonce, 4); + memset(hdr->iv + 4, 0, 12); //TODO: make it random + } else { + /* AES-128-[CBC] + [SHA1] */ + memset(hdr->iv, 0, 16); //TODO: make it random + } + + /* Keep CPT result and NIX send descriptors in headroom */ + sd = (void *)RTE_PTR_ALIGN(data - desc_headroom, OTX2_CPT_RES_ALIGN); + desc_addr = data_addr - RTE_PTR_DIFF(data, sd); + + /* Prepare CPT instruction */ + + inst.nixtx_addr = (desc_addr + offsetof(struct desc, nix_hdr)) >> 4; + inst.doneint = 0; + inst.nixtxl = 1; + inst.res_addr = desc_addr + offsetof(struct desc, cpt_res); + inst.u64[2] = 0; + inst.u64[3] = 0; + inst.wqe_ptr = desc_addr >> 3; /* FIXME: Handle errors */ + inst.qord = 1; + inst.opcode = OTX2_CPT_OP_INLINE_IPSEC_OUTB; + inst.dlen = dlen; + inst.dptr = data_addr + RTE_ETHER_HDR_LEN; + inst.u64[7] = sess->inst_w7; + + /* First word contains 8 bit completion code & 8 bit uc comp code */ + sd->cpt_res.u16[0] = 0; + + /* Prepare NIX send descriptors for output expected from CPT */ + + sd->nix_hdr.w0.u = 0; + sd->nix_hdr.w1.u = 0; + sd->nix_hdr.w0.sq = txq->sq; + sd->nix_hdr.w0.sizem1 = 1; + sd->nix_hdr.w0.total = rte_pktmbuf_data_len(m); + sd->nix_hdr.w0.aura = npa_lf_aura_handle_to_aura(m->pool->pool_id); + + sd->nix_sg.u = 0; + sd->nix_sg.subdc = NIX_SUBDC_SG; + sd->nix_sg.ld_type = NIX_SENDLDTYPE_LDD; + sd->nix_sg.segs = 1; + sd->nix_sg.seg1_size = rte_pktmbuf_data_len(m); + + sd->nix_iova.addr = rte_mbuf_data_iova(m); + + /* Mark mempool object as "put" since it is freed by NIX */ + __mempool_check_cookies(m->pool, (void **)&m, 1, 0); + + if (!ev->sched_type) + otx2_ssogws_head_wait(ws); + + inst.param1 = sess->esn_hi >> 16; + inst.param2 = sess->esn_hi & 0xffff; + + hdr->seq = rte_cpu_to_be_32(sess->seq); + hdr->ip_id = rte_cpu_to_be_32(sess->ip_id); + + sess->ip_id++; + sess->esn++; + + rte_cio_wmb(); + + do { + otx2_lmt_mov(sess->cpt_lmtline, &inst, 2); + lmt_status = otx2_lmt_submit(sess->cpt_nq_reg); + } while (lmt_status == 0); + + return 1; + +drop: + if (offload_flags & NIX_TX_OFFLOAD_MBUF_NOFF_F) { + /* Don't free if reference count > 1 */ + if (rte_pktmbuf_prefree_seg(m) == NULL) + return 0; + } + rte_pktmbuf_free(m); + return 0; +} + +#endif /* __OTX2_ETHDEV_SEC_TX_H__ */ -- 2.20.1