*((uint16_t *)&descs[3]+7) = vol.e[3];
}
- /* vPMD receive routine, now only accept (nb_pkts == RTE_I40E_VPMD_RX_BURST)
- * in one loop
- *
+ /*
* Notice:
* - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
* - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
return nb_pkts_recd;
}
- /* vPMD receive routine, now only accept (nb_pkts == RTE_IXGBE_VPMD_RX_BURST)
- * in one loop
- *
+ /*
* Notice:
- * - nb_pkts < RTE_I40E_VPMD_RX_BURST, just return no packet
- * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_IXGBE_VPMD_RX_BURST
- * numbers of DD bit
+ * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
+ * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
+ * numbers of DD bits
*/
uint16_t
i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL);
}
+static inline uint16_t
+reassemble_packets(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_bufs,
+ uint16_t nb_bufs, uint8_t *split_flags)
+{
+ struct rte_mbuf *pkts[RTE_I40E_VPMD_RX_BURST]; /*finished pkts*/
+ struct rte_mbuf *start = rxq->pkt_first_seg;
+ struct rte_mbuf *end = rxq->pkt_last_seg;
+ unsigned pkt_idx, buf_idx;
+
+ for (buf_idx = 0, pkt_idx = 0; buf_idx < nb_bufs; buf_idx++) {
+ if (end != NULL) {
+ /* processing a split packet */
+ end->next = rx_bufs[buf_idx];
+ rx_bufs[buf_idx]->data_len += rxq->crc_len;
+
+ start->nb_segs++;
+ start->pkt_len += rx_bufs[buf_idx]->data_len;
+ end = end->next;
+
+ if (!split_flags[buf_idx]) {
+ /* it's the last packet of the set */
+ start->hash = end->hash;
+ start->ol_flags = end->ol_flags;
+ /* we need to strip crc for the whole packet */
+ start->pkt_len -= rxq->crc_len;
+ if (end->data_len > rxq->crc_len) {
+ end->data_len -= rxq->crc_len;
+ } else {
+ /* free up last mbuf */
+ struct rte_mbuf *secondlast = start;
+
+ while (secondlast->next != end)
+ secondlast = secondlast->next;
+ secondlast->data_len -= (rxq->crc_len -
+ end->data_len);
+ secondlast->next = NULL;
+ rte_pktmbuf_free_seg(end);
+ end = secondlast;
+ }
+ pkts[pkt_idx++] = start;
+ start = end = NULL;
+ }
+ } else {
+ /* not processing a split packet */
+ if (!split_flags[buf_idx]) {
+ /* not a split packet, save and skip */
+ pkts[pkt_idx++] = rx_bufs[buf_idx];
+ continue;
+ }
+ end = start = rx_bufs[buf_idx];
+ rx_bufs[buf_idx]->data_len += rxq->crc_len;
+ rx_bufs[buf_idx]->pkt_len += rxq->crc_len;
+ }
+ }
+
+ /* save the partial packet for next time */
+ rxq->pkt_first_seg = start;
+ rxq->pkt_last_seg = end;
+ memcpy(rx_bufs, pkts, pkt_idx * (sizeof(*pkts)));
+ return pkt_idx;
+}
+
+ /* vPMD receive routine that reassembles scattered packets
+ * Notice:
+ * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet
+ * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST
+ * numbers of DD bits
+ */
+uint16_t
+i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+
+ struct i40e_rx_queue *rxq = rx_queue;
+ uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {0};
+
+ /* get some new buffers */
+ uint16_t nb_bufs = _recv_raw_pkts_vec(rxq, rx_pkts, nb_pkts,
+ split_flags);
+ if (nb_bufs == 0)
+ return 0;
+
+ /* happy day case, full burst + no packets to be joined */
+ const uint64_t *split_fl64 = (uint64_t *)split_flags;
+
+ if (rxq->pkt_first_seg == NULL &&
+ split_fl64[0] == 0 && split_fl64[1] == 0 &&
+ split_fl64[2] == 0 && split_fl64[3] == 0)
+ return nb_bufs;
+
+ /* reassemble any packets that need reassembly*/
+ unsigned i = 0;
+
+ if (rxq->pkt_first_seg == NULL) {
+ /* find the first split flag, and only reassemble then*/
+ while (i < nb_bufs && !split_flags[i])
+ i++;
+ if (i == nb_bufs)
+ return nb_bufs;
+ }
+ return i + reassemble_packets(rxq, &rx_pkts[i], nb_bufs - i,
+ &split_flags[i]);
+}
+
+static inline void
+vtx1(volatile struct i40e_tx_desc *txdp,
+ struct rte_mbuf *pkt, uint64_t flags)
+{
+ uint64_t high_qw = (I40E_TX_DESC_DTYPE_DATA |
+ ((uint64_t)flags << I40E_TXD_QW1_CMD_SHIFT) |
+ ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
+
+ __m128i descriptor = _mm_set_epi64x(high_qw,
+ pkt->buf_physaddr + pkt->data_off);
+ _mm_store_si128((__m128i *)txdp, descriptor);
+}
+
+static inline void
+vtx(volatile struct i40e_tx_desc *txdp,
+ struct rte_mbuf **pkt, uint16_t nb_pkts, uint64_t flags)
+{
+ int i;
+
+ for (i = 0; i < nb_pkts; ++i, ++txdp, ++pkt)
+ vtx1(txdp, *pkt, flags);
+}
+
+static inline int __attribute__((always_inline))
+i40e_tx_free_bufs(struct i40e_tx_queue *txq)
+{
+ struct i40e_tx_entry *txep;
+ uint32_t n;
+ uint32_t i;
+ int nb_free = 0;
+ struct rte_mbuf *m, *free[RTE_I40E_TX_MAX_FREE_BUF_SZ];
+
+ /* check DD bits on threshold descriptor */
+ if ((txq->tx_ring[txq->tx_next_dd].cmd_type_offset_bsz &
+ rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) !=
+ rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
+ return 0;
+
+ n = txq->tx_rs_thresh;
+
+ /* first buffer to free from S/W ring is at index
+ * tx_next_dd - (tx_rs_thresh-1)
+ */
+ txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)];
+ m = __rte_pktmbuf_prefree_seg(txep[0].mbuf);
+ if (likely(m != NULL)) {
+ free[0] = m;
+ nb_free = 1;
+ for (i = 1; i < n; i++) {
+ m = __rte_pktmbuf_prefree_seg(txep[i].mbuf);
+ if (likely(m != NULL)) {
+ if (likely(m->pool == free[0]->pool)) {
+ free[nb_free++] = m;
+ } else {
+ rte_mempool_put_bulk(free[0]->pool,
+ (void *)free,
+ nb_free);
+ free[0] = m;
+ nb_free = 1;
+ }
+ }
+ }
+ rte_mempool_put_bulk(free[0]->pool, (void **)free, nb_free);
+ } else {
+ for (i = 1; i < n; i++) {
+ m = __rte_pktmbuf_prefree_seg(txep[i].mbuf);
+ if (m != NULL)
+ rte_mempool_put(m->pool, m);
+ }
+ }
+
+ /* buffers were freed, update counters */
+ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
+ txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
+ if (txq->tx_next_dd >= txq->nb_tx_desc)
+ txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
+
+ return txq->tx_rs_thresh;
+}
+
+static inline void __attribute__((always_inline))
+tx_backlog_entry(struct i40e_tx_entry *txep,
+ struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+ int i;
+
+ for (i = 0; i < (int)nb_pkts; ++i)
+ txep[i].mbuf = tx_pkts[i];
+}
+
+uint16_t
+i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ struct i40e_tx_queue *txq = (struct i40e_tx_queue *)tx_queue;
+ volatile struct i40e_tx_desc *txdp;
+ struct i40e_tx_entry *txep;
+ uint16_t n, nb_commit, tx_id;
+ uint64_t flags = I40E_TD_CMD;
+ uint64_t rs = I40E_TX_DESC_CMD_RS | I40E_TD_CMD;
+ int i;
+
+ /* cross rx_thresh boundary is not allowed */
+ nb_pkts = RTE_MIN(nb_pkts, txq->tx_rs_thresh);
+
+ if (txq->nb_tx_free < txq->tx_free_thresh)
+ i40e_tx_free_bufs(txq);
+
+ nb_commit = nb_pkts = (uint16_t)RTE_MIN(txq->nb_tx_free, nb_pkts);
+ if (unlikely(nb_pkts == 0))
+ return 0;
+
+ tx_id = txq->tx_tail;
+ txdp = &txq->tx_ring[tx_id];
+ txep = &txq->sw_ring[tx_id];
+
+ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_pkts);
+
+ n = (uint16_t)(txq->nb_tx_desc - tx_id);
+ if (nb_commit >= n) {
+ tx_backlog_entry(txep, tx_pkts, n);
+
+ for (i = 0; i < n - 1; ++i, ++tx_pkts, ++txdp)
+ vtx1(txdp, *tx_pkts, flags);
+
+ vtx1(txdp, *tx_pkts++, rs);
+
+ nb_commit = (uint16_t)(nb_commit - n);
+
+ tx_id = 0;
+ txq->tx_next_rs = (uint16_t)(txq->tx_rs_thresh - 1);
+
+ /* avoid reach the end of ring */
+ txdp = &txq->tx_ring[tx_id];
+ txep = &txq->sw_ring[tx_id];
+ }
+
+ tx_backlog_entry(txep, tx_pkts, nb_commit);
+
+ vtx(txdp, tx_pkts, nb_commit, flags);
+
+ tx_id = (uint16_t)(tx_id + nb_commit);
+ if (tx_id > txq->tx_next_rs) {
+ txq->tx_ring[txq->tx_next_rs].cmd_type_offset_bsz |=
+ rte_cpu_to_le_64(((uint64_t)I40E_TX_DESC_CMD_RS) <<
+ I40E_TXD_QW1_CMD_SHIFT);
+ txq->tx_next_rs =
+ (uint16_t)(txq->tx_next_rs + txq->tx_rs_thresh);
+ }
+
+ txq->tx_tail = tx_id;
+
+ I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
+
+ return nb_pkts;
+}
+
void __attribute__((cold))
i40e_rx_queue_release_mbufs_vec(struct i40e_rx_queue *rxq)
{
rxq->mbuf_initializer = *(uint64_t *)p;
return 0;
}
+
+int __attribute__((cold))
+i40e_txq_vec_setup(struct i40e_tx_queue __rte_unused *txq)
+{
+ return 0;
+}
+
+int __attribute__((cold))
+i40e_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
+{
+#ifndef RTE_LIBRTE_IEEE1588
+ struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
+ struct rte_fdir_conf *fconf = &dev->data->dev_conf.fdir_conf;
+
+#ifndef RTE_LIBRTE_I40E_RX_OLFLAGS_ENABLE
+ /* whithout rx ol_flags, no VP flag report */
+ if (rxmode->hw_vlan_strip != 0 ||
+ rxmode->hw_vlan_extend != 0)
+ return -1;
+#endif
+
+ /* no fdir support */
+ if (fconf->mode != RTE_FDIR_MODE_NONE)
+ return -1;
+
+ /* - no csum error report support
+ * - no header split support
+ */
+ if (rxmode->hw_ip_checksum == 1 ||
+ rxmode->header_split == 1)
+ return -1;
+
+ return 0;
+#else
+ RTE_SET_USED(dev);
+ return -1;
+#endif
+}