@@ -1027,12 +1027,6 @@ cpt_pdcp_chain_alg_prep(uint32_t req_flags, uint64_t d_offs, uint64_t d_lens,
void *dm_vaddr;
uint8_t *iv_d;
- if (unlikely((!(req_flags & ROC_SE_SINGLE_BUF_INPLACE)) ||
- (!(req_flags & ROC_SE_SINGLE_BUF_HEADROOM)))) {
- plt_dp_err("Scatter gather mode is not supported");
- return -1;
- }
-
encr_offset = ROC_SE_ENCR_OFFSET(d_offs);
auth_offset = ROC_SE_AUTH_OFFSET(d_offs);
@@ -1084,28 +1078,141 @@ cpt_pdcp_chain_alg_prep(uint32_t req_flags, uint64_t d_offs, uint64_t d_lens,
else
inputlen = encr_offset + encr_data_len;
- dm_vaddr = params->bufs[0].vaddr;
+ if (likely(((req_flags & ROC_SE_SINGLE_BUF_INPLACE)) &&
+ ((req_flags & ROC_SE_SINGLE_BUF_HEADROOM)))) {
+
+ dm_vaddr = params->bufs[0].vaddr;
- /* Use Direct mode */
+ /* Use Direct mode */
+
+ offset_vaddr = (uint64_t *)((uint8_t *)dm_vaddr -
+ ROC_SE_OFF_CTRL_LEN - iv_len);
- offset_vaddr = (uint64_t *)((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;
- /* 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;
- cpt_inst_w4.s.dlen = inputlen + ROC_SE_OFF_CTRL_LEN;
+ *(uint64_t *)offset_vaddr =
+ rte_cpu_to_be_64(((uint64_t)(iv_offset) << 16) |
+ ((uint64_t)(encr_offset)));
- *(uint64_t *)offset_vaddr = rte_cpu_to_be_64(
- ((uint64_t)(iv_offset) << 16) | ((uint64_t)(encr_offset)));
+ iv_d = ((uint8_t *)offset_vaddr + ROC_SE_OFF_CTRL_LEN);
+ pdcp_iv_copy(iv_d, cipher_iv, pdcp_ci_alg, pack_iv);
+
+ iv_d = ((uint8_t *)offset_vaddr + ROC_SE_OFF_CTRL_LEN + 16);
+ pdcp_iv_copy(iv_d, auth_iv, pdcp_auth_alg, pack_iv);
+
+ } else {
+
+ struct roc_se_sglist_comp *scatter_comp, *gather_comp;
+ void *m_vaddr = params->meta_buf.vaddr;
+ uint32_t i, g_size_bytes, s_size_bytes;
+ uint8_t *in_buffer;
+ uint32_t size;
+
+ /* save space for IV */
+ offset_vaddr = m_vaddr;
+
+ m_vaddr = (uint8_t *)m_vaddr + ROC_SE_OFF_CTRL_LEN +
+ RTE_ALIGN_CEIL(iv_len, 8);
+
+ cpt_inst_w4.s.opcode_major |= (uint64_t)ROC_SE_DMA_MODE;
+
+ /* DPTR has SG list */
+ in_buffer = m_vaddr;
+
+ ((uint16_t *)in_buffer)[0] = 0;
+ ((uint16_t *)in_buffer)[1] = 0;
+
+ gather_comp =
+ (struct roc_se_sglist_comp *)((uint8_t *)m_vaddr + 8);
+
+ /* Input Gather List */
+ i = 0;
+
+ /* Offset control word followed by iv */
+
+ i = fill_sg_comp(gather_comp, i, (uint64_t)offset_vaddr,
+ ROC_SE_OFF_CTRL_LEN + iv_len);
+
+ *(uint64_t *)offset_vaddr =
+ rte_cpu_to_be_64(((uint64_t)(iv_offset) << 16) |
+ ((uint64_t)(encr_offset)));
+
+ iv_d = ((uint8_t *)offset_vaddr + ROC_SE_OFF_CTRL_LEN);
+ pdcp_iv_copy(iv_d, cipher_iv, pdcp_ci_alg, pack_iv);
+
+ iv_d = ((uint8_t *)offset_vaddr + ROC_SE_OFF_CTRL_LEN + 16);
+ pdcp_iv_copy(iv_d, auth_iv, pdcp_auth_alg, pack_iv);
+
+ /* input data */
+ size = inputlen - iv_len;
+ if (size) {
+ i = fill_sg_comp_from_iov(gather_comp, i,
+ params->src_iov, 0, &size,
+ NULL, 0);
+ 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
+ */
- iv_d = ((uint8_t *)offset_vaddr + ROC_SE_OFF_CTRL_LEN);
- pdcp_iv_copy(iv_d, cipher_iv, pdcp_ci_alg, pack_iv);
+ i = 0;
+ scatter_comp =
+ (struct roc_se_sglist_comp *)((uint8_t *)gather_comp +
+ g_size_bytes);
+
+ if (iv_len) {
+ i = fill_sg_comp(scatter_comp, i,
+ (uint64_t)offset_vaddr +
+ ROC_SE_OFF_CTRL_LEN,
+ iv_len);
+ }
- iv_d = ((uint8_t *)offset_vaddr + ROC_SE_OFF_CTRL_LEN + 16);
- pdcp_iv_copy(iv_d, auth_iv, pdcp_auth_alg, pack_iv);
+ /* Add output data */
+ if (se_ctx->ciph_then_auth &&
+ (req_flags & ROC_SE_VALID_MAC_BUF))
+ size = inputlen - iv_len;
+ else
+ /* Output including mac */
+ size = inputlen - iv_len + mac_len;
+
+ if (size) {
+ i = fill_sg_comp_from_iov(scatter_comp, i,
+ params->dst_iov, 0, &size,
+ NULL, 0);
+
+ 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;
+ }
inst->w4.u64 = cpt_inst_w4.u64;