From: Archana Muniganti Date: Fri, 25 Jun 2021 05:56:23 +0000 (+0530) Subject: crypto/cnxk: add flexi cipher encryption X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3de331795f733251445bedfe2c33ac3198710eaa;p=dpdk.git crypto/cnxk: add flexi cipher encryption Add flexi crypto cipher encrypt in enqueue API. Flexi crypto opcode covers a broad set of ciphers including variants of AES. Signed-off-by: Ankur Dwivedi Signed-off-by: Anoob Joseph Signed-off-by: Archana Muniganti Signed-off-by: Tejasree Kondoj Acked-by: Akhil Goyal --- diff --git a/drivers/crypto/cnxk/cn10k_cryptodev_ops.c b/drivers/crypto/cnxk/cn10k_cryptodev_ops.c index ec301f4af7..23ef6c22bb 100644 --- a/drivers/crypto/cnxk/cn10k_cryptodev_ops.c +++ b/drivers/crypto/cnxk/cn10k_cryptodev_ops.c @@ -46,13 +46,15 @@ cpt_sym_inst_fill(struct cnxk_cpt_qp *qp, struct rte_crypto_op *op, struct cnxk_se_sess *sess, struct cpt_inflight_req *infl_req, struct cpt_inst_s *inst) { - RTE_SET_USED(qp); - RTE_SET_USED(op); - RTE_SET_USED(sess); - RTE_SET_USED(infl_req); - RTE_SET_USED(inst); + uint64_t cpt_op; + int ret = -1; - return -ENOTSUP; + cpt_op = sess->cpt_op; + + if (cpt_op & ROC_SE_OP_CIPHER_MASK) + ret = fill_fc_params(op, sess, &qp->meta_info, infl_req, inst); + + return ret; } static inline int diff --git a/drivers/crypto/cnxk/cn9k_cryptodev_ops.c b/drivers/crypto/cnxk/cn9k_cryptodev_ops.c index 27076a856f..62ad05c947 100644 --- a/drivers/crypto/cnxk/cn9k_cryptodev_ops.c +++ b/drivers/crypto/cnxk/cn9k_cryptodev_ops.c @@ -17,13 +17,15 @@ cn9k_cpt_sym_inst_fill(struct cnxk_cpt_qp *qp, struct rte_crypto_op *op, struct cpt_inflight_req *infl_req, struct cpt_inst_s *inst) { - RTE_SET_USED(qp); - RTE_SET_USED(op); - RTE_SET_USED(sess); - RTE_SET_USED(infl_req); - RTE_SET_USED(inst); + uint64_t cpt_op; + int ret = -1; - return -ENOTSUP; + cpt_op = sess->cpt_op; + + if (cpt_op & ROC_SE_OP_CIPHER_MASK) + ret = fill_fc_params(op, sess, &qp->meta_info, infl_req, inst); + + return ret; } static inline struct cnxk_se_sess * diff --git a/drivers/crypto/cnxk/cnxk_se.h b/drivers/crypto/cnxk/cnxk_se.h index 57bbd70921..2110f491c6 100644 --- a/drivers/crypto/cnxk/cnxk_se.h +++ b/drivers/crypto/cnxk/cnxk_se.h @@ -6,7 +6,15 @@ #define _CNXK_SE_H_ #include -#include "roc_se.h" +#include "cnxk_cryptodev.h" +#include "cnxk_cryptodev_ops.h" + +#define SRC_IOV_SIZE \ + (sizeof(struct roc_se_iov_ptr) + \ + (sizeof(struct roc_se_buf_ptr) * ROC_SE_MAX_SG_CNT)) +#define DST_IOV_SIZE \ + (sizeof(struct roc_se_iov_ptr) + \ + (sizeof(struct roc_se_buf_ptr) * ROC_SE_MAX_SG_CNT)) struct cnxk_se_sess { uint16_t cpt_op : 4; @@ -69,6 +77,457 @@ cpt_mac_len_verify(struct rte_crypto_auth_xform *auth) return ret; } +static __rte_always_inline void +cpt_fc_salt_update(struct roc_se_ctx *se_ctx, uint8_t *salt) +{ + struct roc_se_context *fctx = &se_ctx->se_ctx.fctx; + memcpy(fctx->enc.encr_iv, salt, 4); +} + +static __rte_always_inline uint32_t +fill_sg_comp(struct roc_se_sglist_comp *list, uint32_t i, phys_addr_t dma_addr, + uint32_t size) +{ + struct roc_se_sglist_comp *to = &list[i >> 2]; + + to->u.s.len[i % 4] = rte_cpu_to_be_16(size); + to->ptr[i % 4] = rte_cpu_to_be_64(dma_addr); + i++; + return i; +} + +static __rte_always_inline uint32_t +fill_sg_comp_from_buf(struct roc_se_sglist_comp *list, uint32_t i, + struct roc_se_buf_ptr *from) +{ + struct roc_se_sglist_comp *to = &list[i >> 2]; + + to->u.s.len[i % 4] = rte_cpu_to_be_16(from->size); + to->ptr[i % 4] = rte_cpu_to_be_64((uint64_t)from->vaddr); + i++; + return i; +} + +static __rte_always_inline uint32_t +fill_sg_comp_from_buf_min(struct roc_se_sglist_comp *list, uint32_t i, + struct roc_se_buf_ptr *from, uint32_t *psize) +{ + struct roc_se_sglist_comp *to = &list[i >> 2]; + uint32_t size = *psize; + uint32_t e_len; + + e_len = (size > from->size) ? from->size : size; + to->u.s.len[i % 4] = rte_cpu_to_be_16(e_len); + to->ptr[i % 4] = rte_cpu_to_be_64((uint64_t)from->vaddr); + *psize -= e_len; + i++; + return i; +} + +/* + * This fills the MC expected SGIO list + * from IOV given by user. + */ +static __rte_always_inline uint32_t +fill_sg_comp_from_iov(struct roc_se_sglist_comp *list, uint32_t i, + struct roc_se_iov_ptr *from, uint32_t from_offset, + uint32_t *psize, struct roc_se_buf_ptr *extra_buf, + uint32_t extra_offset) +{ + int32_t j; + uint32_t extra_len = extra_buf ? extra_buf->size : 0; + uint32_t size = *psize; + struct roc_se_buf_ptr *bufs; + + bufs = from->bufs; + for (j = 0; (j < from->buf_cnt) && size; j++) { + uint64_t e_vaddr; + uint32_t e_len; + struct roc_se_sglist_comp *to = &list[i >> 2]; + + if (unlikely(from_offset)) { + if (from_offset >= bufs[j].size) { + from_offset -= bufs[j].size; + continue; + } + e_vaddr = (uint64_t)bufs[j].vaddr + from_offset; + e_len = (size > (bufs[j].size - from_offset)) ? + (bufs[j].size - from_offset) : + size; + from_offset = 0; + } else { + e_vaddr = (uint64_t)bufs[j].vaddr; + e_len = (size > bufs[j].size) ? bufs[j].size : size; + } + + to->u.s.len[i % 4] = rte_cpu_to_be_16(e_len); + to->ptr[i % 4] = rte_cpu_to_be_64(e_vaddr); + + if (extra_len && (e_len >= extra_offset)) { + /* Break the data at given offset */ + uint32_t next_len = e_len - extra_offset; + uint64_t next_vaddr = e_vaddr + extra_offset; + + if (!extra_offset) { + i--; + } else { + e_len = extra_offset; + size -= e_len; + to->u.s.len[i % 4] = rte_cpu_to_be_16(e_len); + } + + extra_len = RTE_MIN(extra_len, size); + /* Insert extra data ptr */ + if (extra_len) { + i++; + to = &list[i >> 2]; + to->u.s.len[i % 4] = + rte_cpu_to_be_16(extra_len); + to->ptr[i % 4] = rte_cpu_to_be_64( + (uint64_t)extra_buf->vaddr); + size -= extra_len; + } + + next_len = RTE_MIN(next_len, size); + /* insert the rest of the data */ + if (next_len) { + i++; + to = &list[i >> 2]; + to->u.s.len[i % 4] = rte_cpu_to_be_16(next_len); + to->ptr[i % 4] = rte_cpu_to_be_64(next_vaddr); + size -= next_len; + } + extra_len = 0; + + } else { + size -= e_len; + } + if (extra_offset) + extra_offset -= size; + i++; + } + + *psize = size; + return (uint32_t)i; +} + +static __rte_always_inline int +cpt_enc_hmac_prep(uint32_t flags, uint64_t d_offs, uint64_t d_lens, + struct roc_se_fc_params *fc_params, struct cpt_inst_s *inst) +{ + uint32_t iv_offset = 0; + int32_t inputlen, outputlen, enc_dlen, auth_dlen; + struct roc_se_ctx *se_ctx; + uint32_t cipher_type, hash_type; + uint32_t mac_len, size; + uint8_t iv_len = 16; + struct roc_se_buf_ptr *aad_buf = NULL; + uint32_t encr_offset, auth_offset; + uint32_t encr_data_len, auth_data_len, aad_len = 0; + uint32_t passthrough_len = 0; + union cpt_inst_w4 cpt_inst_w4; + void *offset_vaddr; + uint8_t op_minor; + + encr_offset = ROC_SE_ENCR_OFFSET(d_offs); + auth_offset = ROC_SE_AUTH_OFFSET(d_offs); + encr_data_len = ROC_SE_ENCR_DLEN(d_lens); + auth_data_len = ROC_SE_AUTH_DLEN(d_lens); + if (unlikely(flags & ROC_SE_VALID_AAD_BUF)) { + /* We don't support both AAD and auth data separately */ + auth_data_len = 0; + auth_offset = 0; + aad_len = fc_params->aad_buf.size; + aad_buf = &fc_params->aad_buf; + } + se_ctx = fc_params->ctx_buf.vaddr; + cipher_type = se_ctx->enc_cipher; + hash_type = se_ctx->hash_type; + mac_len = se_ctx->mac_len; + op_minor = se_ctx->template_w4.s.opcode_minor; + + if (unlikely(!(flags & ROC_SE_VALID_IV_BUF))) { + iv_len = 0; + iv_offset = ROC_SE_ENCR_IV_OFFSET(d_offs); + } + + if (unlikely(flags & ROC_SE_VALID_AAD_BUF)) { + /* + * When AAD is given, data above encr_offset is pass through + * Since AAD is given as separate pointer and not as offset, + * this is a special case as we need to fragment input data + * into passthrough + encr_data and then insert AAD in between. + */ + if (hash_type != ROC_SE_GMAC_TYPE) { + passthrough_len = encr_offset; + auth_offset = passthrough_len + iv_len; + encr_offset = passthrough_len + aad_len + iv_len; + auth_data_len = aad_len + encr_data_len; + } else { + passthrough_len = 16 + aad_len; + auth_offset = passthrough_len + iv_len; + auth_data_len = aad_len; + } + } else { + encr_offset += iv_len; + auth_offset += iv_len; + } + + /* Encryption */ + cpt_inst_w4.s.opcode_major = ROC_SE_MAJOR_OP_FC; + cpt_inst_w4.s.opcode_minor = ROC_SE_FC_MINOR_OP_ENCRYPT; + cpt_inst_w4.s.opcode_minor |= (uint64_t)op_minor; + + if (hash_type == ROC_SE_GMAC_TYPE) { + encr_offset = 0; + encr_data_len = 0; + } + + auth_dlen = auth_offset + auth_data_len; + enc_dlen = encr_data_len + encr_offset; + if (unlikely(encr_data_len & 0xf)) { + if ((cipher_type == ROC_SE_DES3_CBC) || + (cipher_type == ROC_SE_DES3_ECB)) + enc_dlen = + RTE_ALIGN_CEIL(encr_data_len, 8) + encr_offset; + else if (likely((cipher_type == ROC_SE_AES_CBC) || + (cipher_type == ROC_SE_AES_ECB))) + enc_dlen = + RTE_ALIGN_CEIL(encr_data_len, 8) + encr_offset; + } + + if (unlikely(auth_dlen > enc_dlen)) { + inputlen = auth_dlen; + outputlen = auth_dlen + mac_len; + } else { + inputlen = enc_dlen; + outputlen = enc_dlen + mac_len; + } + + if (op_minor & ROC_SE_FC_MINOR_OP_HMAC_FIRST) + outputlen = enc_dlen; + + /* GP op header */ + cpt_inst_w4.s.param1 = encr_data_len; + cpt_inst_w4.s.param2 = auth_data_len; + + /* + * In cn9k, cn10k since we have a limitation of + * IV & Offset control word not part of instruction + * and need to be part of Data Buffer, we check if + * head room is there and then only do the Direct mode processing + */ + if (likely((flags & ROC_SE_SINGLE_BUF_INPLACE) && + (flags & ROC_SE_SINGLE_BUF_HEADROOM))) { + void *dm_vaddr = fc_params->bufs[0].vaddr; + + /* Use Direct mode */ + + offset_vaddr = + (uint8_t *)dm_vaddr - ROC_SE_OFF_CTRL_LEN - iv_len; + + /* DPTR */ + inst->dptr = (uint64_t)offset_vaddr; + + /* RPTR should just exclude offset control word */ + inst->rptr = (uint64_t)dm_vaddr - iv_len; + + cpt_inst_w4.s.dlen = inputlen + ROC_SE_OFF_CTRL_LEN; + + if (likely(iv_len)) { + uint64_t *dest = (uint64_t *)((uint8_t *)offset_vaddr + + ROC_SE_OFF_CTRL_LEN); + uint64_t *src = fc_params->iv_buf; + dest[0] = src[0]; + dest[1] = src[1]; + } + + } else { + void *m_vaddr = fc_params->meta_buf.vaddr; + uint32_t i, g_size_bytes, s_size_bytes; + struct roc_se_sglist_comp *gather_comp; + struct roc_se_sglist_comp *scatter_comp; + uint8_t *in_buffer; + + /* This falls under strict SG mode */ + offset_vaddr = m_vaddr; + size = ROC_SE_OFF_CTRL_LEN + iv_len; + + m_vaddr = (uint8_t *)m_vaddr + size; + + cpt_inst_w4.s.opcode_major |= (uint64_t)ROC_SE_DMA_MODE; + + if (likely(iv_len)) { + uint64_t *dest = (uint64_t *)((uint8_t *)offset_vaddr + + ROC_SE_OFF_CTRL_LEN); + uint64_t *src = fc_params->iv_buf; + dest[0] = src[0]; + dest[1] = src[1]; + } + + /* DPTR has SG list */ + in_buffer = m_vaddr; + + ((uint16_t *)in_buffer)[0] = 0; + ((uint16_t *)in_buffer)[1] = 0; + + /* TODO Add error check if space will be sufficient */ + gather_comp = + (struct roc_se_sglist_comp *)((uint8_t *)m_vaddr + 8); + + /* + * Input Gather List + */ + + i = 0; + + /* Offset control word that includes iv */ + i = fill_sg_comp(gather_comp, i, (uint64_t)offset_vaddr, + ROC_SE_OFF_CTRL_LEN + iv_len); + + /* Add input data */ + size = inputlen - iv_len; + if (likely(size)) { + uint32_t aad_offset = aad_len ? passthrough_len : 0; + + if (unlikely(flags & ROC_SE_SINGLE_BUF_INPLACE)) { + i = fill_sg_comp_from_buf_min( + gather_comp, i, fc_params->bufs, &size); + } else { + i = fill_sg_comp_from_iov( + gather_comp, i, fc_params->src_iov, 0, + &size, aad_buf, aad_offset); + } + + if (unlikely(size)) { + plt_dp_err("Insufficient buffer space," + " size %d needed", + size); + return -1; + } + } + ((uint16_t *)in_buffer)[2] = rte_cpu_to_be_16(i); + g_size_bytes = + ((i + 3) / 4) * sizeof(struct roc_se_sglist_comp); + + /* + * Output Scatter list + */ + i = 0; + scatter_comp = + (struct roc_se_sglist_comp *)((uint8_t *)gather_comp + + g_size_bytes); + + /* Add IV */ + if (likely(iv_len)) { + i = fill_sg_comp(scatter_comp, i, + (uint64_t)offset_vaddr + + ROC_SE_OFF_CTRL_LEN, + iv_len); + } + + /* output data or output data + digest*/ + if (unlikely(flags & ROC_SE_VALID_MAC_BUF)) { + size = outputlen - iv_len - mac_len; + if (size) { + uint32_t aad_offset = + aad_len ? passthrough_len : 0; + + if (unlikely(flags & + ROC_SE_SINGLE_BUF_INPLACE)) { + i = fill_sg_comp_from_buf_min( + scatter_comp, i, + fc_params->bufs, &size); + } else { + i = fill_sg_comp_from_iov( + scatter_comp, i, + fc_params->dst_iov, 0, &size, + aad_buf, aad_offset); + } + if (unlikely(size)) { + plt_dp_err("Insufficient buffer" + " space, size %d needed", + size); + return -1; + } + } + /* mac_data */ + if (mac_len) { + i = fill_sg_comp_from_buf(scatter_comp, i, + &fc_params->mac_buf); + } + } else { + /* Output including mac */ + size = outputlen - iv_len; + if (likely(size)) { + uint32_t aad_offset = + aad_len ? passthrough_len : 0; + + if (unlikely(flags & + ROC_SE_SINGLE_BUF_INPLACE)) { + i = fill_sg_comp_from_buf_min( + scatter_comp, i, + fc_params->bufs, &size); + } else { + i = fill_sg_comp_from_iov( + scatter_comp, i, + fc_params->dst_iov, 0, &size, + aad_buf, aad_offset); + } + if (unlikely(size)) { + plt_dp_err("Insufficient buffer" + " space, size %d needed", + size); + return -1; + } + } + } + ((uint16_t *)in_buffer)[3] = rte_cpu_to_be_16(i); + s_size_bytes = + ((i + 3) / 4) * sizeof(struct roc_se_sglist_comp); + + size = g_size_bytes + s_size_bytes + ROC_SE_SG_LIST_HDR_SIZE; + + /* This is DPTR len in case of SG mode */ + cpt_inst_w4.s.dlen = size; + + inst->dptr = (uint64_t)in_buffer; + } + + if (unlikely((encr_offset >> 16) || (iv_offset >> 8) || + (auth_offset >> 8))) { + plt_dp_err("Offset not supported"); + plt_dp_err("enc_offset: %d", encr_offset); + plt_dp_err("iv_offset : %d", iv_offset); + plt_dp_err("auth_offset: %d", auth_offset); + return -1; + } + + *(uint64_t *)offset_vaddr = rte_cpu_to_be_64( + ((uint64_t)encr_offset << 16) | ((uint64_t)iv_offset << 8) | + ((uint64_t)auth_offset)); + + inst->w4.u64 = cpt_inst_w4.u64; + return 0; +} + +static __rte_always_inline int +cpt_fc_enc_hmac_prep(uint32_t flags, uint64_t d_offs, uint64_t d_lens, + struct roc_se_fc_params *fc_params, + struct cpt_inst_s *inst) +{ + struct roc_se_ctx *ctx = fc_params->ctx_buf.vaddr; + uint8_t fc_type; + int ret = -1; + + fc_type = ctx->fc_type; + + if (likely(fc_type == ROC_SE_FC_GEN)) + ret = cpt_enc_hmac_prep(flags, d_offs, d_lens, fc_params, inst); + + return ret; +} + static __rte_always_inline int fill_sess_aead(struct rte_crypto_sym_xform *xform, struct cnxk_se_sess *sess) { @@ -392,4 +851,361 @@ fill_sess_gmac(struct rte_crypto_sym_xform *xform, struct cnxk_se_sess *sess) return 0; } +static __rte_always_inline void * +alloc_op_meta(struct roc_se_buf_ptr *buf, int32_t len, + struct rte_mempool *cpt_meta_pool, + struct cpt_inflight_req *infl_req) +{ + uint8_t *mdata; + + if (unlikely(rte_mempool_get(cpt_meta_pool, (void **)&mdata) < 0)) + return NULL; + + buf->vaddr = mdata; + buf->size = len; + + infl_req->mdata = mdata; + infl_req->op_flags |= CPT_OP_FLAGS_METABUF; + + return mdata; +} + +static __rte_always_inline uint32_t +prepare_iov_from_pkt(struct rte_mbuf *pkt, struct roc_se_iov_ptr *iovec, + uint32_t start_offset) +{ + uint16_t index = 0; + void *seg_data = NULL; + int32_t seg_size = 0; + + if (!pkt) { + iovec->buf_cnt = 0; + return 0; + } + + if (!start_offset) { + seg_data = rte_pktmbuf_mtod(pkt, void *); + seg_size = pkt->data_len; + } else { + while (start_offset >= pkt->data_len) { + start_offset -= pkt->data_len; + pkt = pkt->next; + } + + seg_data = rte_pktmbuf_mtod_offset(pkt, void *, start_offset); + seg_size = pkt->data_len - start_offset; + if (!seg_size) + return 1; + } + + /* first seg */ + iovec->bufs[index].vaddr = seg_data; + iovec->bufs[index].size = seg_size; + index++; + pkt = pkt->next; + + while (unlikely(pkt != NULL)) { + seg_data = rte_pktmbuf_mtod(pkt, void *); + seg_size = pkt->data_len; + if (!seg_size) + break; + + iovec->bufs[index].vaddr = seg_data; + iovec->bufs[index].size = seg_size; + + index++; + + pkt = pkt->next; + } + + iovec->buf_cnt = index; + return 0; +} + +static __rte_always_inline uint32_t +prepare_iov_from_pkt_inplace(struct rte_mbuf *pkt, + struct roc_se_fc_params *param, uint32_t *flags) +{ + uint16_t index = 0; + void *seg_data = NULL; + uint32_t seg_size = 0; + struct roc_se_iov_ptr *iovec; + + seg_data = rte_pktmbuf_mtod(pkt, void *); + seg_size = pkt->data_len; + + /* first seg */ + if (likely(!pkt->next)) { + uint32_t headroom; + + *flags |= ROC_SE_SINGLE_BUF_INPLACE; + headroom = rte_pktmbuf_headroom(pkt); + if (likely(headroom >= 24)) + *flags |= ROC_SE_SINGLE_BUF_HEADROOM; + + param->bufs[0].vaddr = seg_data; + param->bufs[0].size = seg_size; + return 0; + } + iovec = param->src_iov; + iovec->bufs[index].vaddr = seg_data; + iovec->bufs[index].size = seg_size; + index++; + pkt = pkt->next; + + while (unlikely(pkt != NULL)) { + seg_data = rte_pktmbuf_mtod(pkt, void *); + seg_size = pkt->data_len; + + if (!seg_size) + break; + + iovec->bufs[index].vaddr = seg_data; + iovec->bufs[index].size = seg_size; + + index++; + + pkt = pkt->next; + } + + iovec->buf_cnt = index; + return 0; +} + +static __rte_always_inline int +fill_fc_params(struct rte_crypto_op *cop, struct cnxk_se_sess *sess, + struct cpt_qp_meta_info *m_info, + struct cpt_inflight_req *infl_req, struct cpt_inst_s *inst) +{ + struct roc_se_ctx *ctx = &sess->roc_se_ctx; + uint8_t op_minor = ctx->template_w4.s.opcode_minor; + struct rte_crypto_sym_op *sym_op = cop->sym; + void *mdata = NULL; + uint32_t mc_hash_off; + uint32_t flags = 0; + uint64_t d_offs, d_lens; + struct rte_mbuf *m_src, *m_dst; + uint8_t cpt_op = sess->cpt_op; +#ifdef CPT_ALWAYS_USE_SG_MODE + uint8_t inplace = 0; +#else + uint8_t inplace = 1; +#endif + struct roc_se_fc_params fc_params; + char src[SRC_IOV_SIZE]; + char dst[SRC_IOV_SIZE]; + uint32_t iv_buf[4]; + int ret; + + if (likely(sess->iv_length)) { + flags |= ROC_SE_VALID_IV_BUF; + fc_params.iv_buf = rte_crypto_op_ctod_offset(cop, uint8_t *, + sess->iv_offset); + if (sess->aes_ctr && unlikely(sess->iv_length != 16)) { + memcpy((uint8_t *)iv_buf, + rte_crypto_op_ctod_offset(cop, uint8_t *, + sess->iv_offset), + 12); + iv_buf[3] = rte_cpu_to_be_32(0x1); + fc_params.iv_buf = iv_buf; + } + } + + if (sess->zsk_flag) { + fc_params.auth_iv_buf = rte_crypto_op_ctod_offset( + cop, uint8_t *, sess->auth_iv_offset); + if (sess->zsk_flag != ROC_SE_ZS_EA) + inplace = 0; + } + m_src = sym_op->m_src; + m_dst = sym_op->m_dst; + + if (sess->aes_gcm || sess->chacha_poly) { + uint8_t *salt; + uint8_t *aad_data; + uint16_t aad_len; + + d_offs = sym_op->aead.data.offset; + d_lens = sym_op->aead.data.length; + mc_hash_off = + sym_op->aead.data.offset + sym_op->aead.data.length; + + aad_data = sym_op->aead.aad.data; + aad_len = sess->aad_length; + if (likely((aad_data + aad_len) == + rte_pktmbuf_mtod_offset(m_src, uint8_t *, + sym_op->aead.data.offset))) { + d_offs = (d_offs - aad_len) | (d_offs << 16); + d_lens = (d_lens + aad_len) | (d_lens << 32); + } else { + fc_params.aad_buf.vaddr = sym_op->aead.aad.data; + fc_params.aad_buf.size = aad_len; + flags |= ROC_SE_VALID_AAD_BUF; + inplace = 0; + d_offs = d_offs << 16; + d_lens = d_lens << 32; + } + + salt = fc_params.iv_buf; + if (unlikely(*(uint32_t *)salt != sess->salt)) { + cpt_fc_salt_update(&sess->roc_se_ctx, salt); + sess->salt = *(uint32_t *)salt; + } + fc_params.iv_buf = salt + 4; + if (likely(sess->mac_len)) { + struct rte_mbuf *m = + (cpt_op & ROC_SE_OP_ENCODE) ? m_dst : m_src; + + if (!m) + m = m_src; + + /* hmac immediately following data is best case */ + if (unlikely(rte_pktmbuf_mtod(m, uint8_t *) + + mc_hash_off != + (uint8_t *)sym_op->aead.digest.data)) { + flags |= ROC_SE_VALID_MAC_BUF; + fc_params.mac_buf.size = sess->mac_len; + fc_params.mac_buf.vaddr = + sym_op->aead.digest.data; + inplace = 0; + } + } + } else { + d_offs = sym_op->cipher.data.offset; + d_lens = sym_op->cipher.data.length; + mc_hash_off = + sym_op->cipher.data.offset + sym_op->cipher.data.length; + d_offs = (d_offs << 16) | sym_op->auth.data.offset; + d_lens = (d_lens << 32) | sym_op->auth.data.length; + + if (mc_hash_off < + (sym_op->auth.data.offset + sym_op->auth.data.length)) { + mc_hash_off = (sym_op->auth.data.offset + + sym_op->auth.data.length); + } + /* for gmac, salt should be updated like in gcm */ + if (unlikely(sess->is_gmac)) { + uint8_t *salt; + salt = fc_params.iv_buf; + if (unlikely(*(uint32_t *)salt != sess->salt)) { + cpt_fc_salt_update(&sess->roc_se_ctx, salt); + sess->salt = *(uint32_t *)salt; + } + fc_params.iv_buf = salt + 4; + } + if (likely(sess->mac_len)) { + struct rte_mbuf *m; + + m = (cpt_op & ROC_SE_OP_ENCODE) ? m_dst : m_src; + if (!m) + m = m_src; + + /* hmac immediately following data is best case */ + if (!(op_minor & ROC_SE_FC_MINOR_OP_HMAC_FIRST) && + (unlikely(rte_pktmbuf_mtod(m, uint8_t *) + + mc_hash_off != + (uint8_t *)sym_op->auth.digest.data))) { + flags |= ROC_SE_VALID_MAC_BUF; + fc_params.mac_buf.size = sess->mac_len; + fc_params.mac_buf.vaddr = + sym_op->auth.digest.data; + inplace = 0; + } + } + } + fc_params.ctx_buf.vaddr = &sess->roc_se_ctx; + + if (!(op_minor & ROC_SE_FC_MINOR_OP_HMAC_FIRST) && + unlikely(sess->is_null || sess->cpt_op == ROC_SE_OP_DECODE)) + inplace = 0; + + if (likely(!m_dst && inplace)) { + /* Case of single buffer without AAD buf or + * separate mac buf in place and + * not air crypto + */ + fc_params.dst_iov = fc_params.src_iov = (void *)src; + + if (unlikely(prepare_iov_from_pkt_inplace(m_src, &fc_params, + &flags))) { + plt_dp_err("Prepare inplace src iov failed"); + ret = -EINVAL; + goto err_exit; + } + + } else { + /* Out of place processing */ + fc_params.src_iov = (void *)src; + fc_params.dst_iov = (void *)dst; + + /* Store SG I/O in the api for reuse */ + if (prepare_iov_from_pkt(m_src, fc_params.src_iov, 0)) { + plt_dp_err("Prepare src iov failed"); + ret = -EINVAL; + goto err_exit; + } + + if (unlikely(m_dst != NULL)) { + uint32_t pkt_len; + + /* Try to make room as much as src has */ + pkt_len = rte_pktmbuf_pkt_len(m_dst); + + if (unlikely(pkt_len < rte_pktmbuf_pkt_len(m_src))) { + pkt_len = rte_pktmbuf_pkt_len(m_src) - pkt_len; + if (!rte_pktmbuf_append(m_dst, pkt_len)) { + plt_dp_err("Not enough space in " + "m_dst %p, need %u" + " more", + m_dst, pkt_len); + ret = -EINVAL; + goto err_exit; + } + } + + if (prepare_iov_from_pkt(m_dst, fc_params.dst_iov, 0)) { + plt_dp_err("Prepare dst iov failed for " + "m_dst %p", + m_dst); + ret = -EINVAL; + goto err_exit; + } + } else { + fc_params.dst_iov = (void *)src; + } + } + + if (unlikely(!((flags & ROC_SE_SINGLE_BUF_INPLACE) && + (flags & ROC_SE_SINGLE_BUF_HEADROOM) && + ((ctx->fc_type == ROC_SE_FC_GEN) || + (ctx->fc_type == ROC_SE_PDCP))))) { + mdata = alloc_op_meta(&fc_params.meta_buf, m_info->mlen, + m_info->pool, infl_req); + if (mdata == NULL) { + plt_dp_err("Error allocating meta buffer for request"); + return -ENOMEM; + } + } + + /* Finally prepare the instruction */ + if (cpt_op & ROC_SE_OP_ENCODE) + ret = cpt_fc_enc_hmac_prep(flags, d_offs, d_lens, &fc_params, + inst); + else + ret = ENOTSUP; + + if (unlikely(ret)) { + plt_dp_err("Preparing request failed due to bad input arg"); + goto free_mdata_and_exit; + } + + return 0; + +free_mdata_and_exit: + if (infl_req->op_flags & CPT_OP_FLAGS_METABUF) + rte_mempool_put(m_info->pool, infl_req->mdata); +err_exit: + return ret; +} + #endif /*_CNXK_SE_H_ */