return desc;
}
+/* Rx L3/L4 checksum */
+static inline uint64_t
+ice_rxd_error_to_pkt_flags(uint64_t qword)
+{
+ uint64_t flags = 0;
+ uint64_t error_bits = (qword >> ICE_RXD_QW1_ERROR_S);
+
+ if (likely((error_bits & ICE_RX_ERR_BITS) == 0)) {
+ flags |= (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD);
+ return flags;
+ }
+
+ if (unlikely(error_bits & (1 << ICE_RX_DESC_ERROR_IPE_S)))
+ flags |= PKT_RX_IP_CKSUM_BAD;
+ else
+ flags |= PKT_RX_IP_CKSUM_GOOD;
+
+ if (unlikely(error_bits & (1 << ICE_RX_DESC_ERROR_L4E_S)))
+ flags |= PKT_RX_L4_CKSUM_BAD;
+ else
+ flags |= PKT_RX_L4_CKSUM_GOOD;
+
+ if (unlikely(error_bits & (1 << ICE_RX_DESC_ERROR_EIPE_S)))
+ flags |= PKT_RX_EIP_CKSUM_BAD;
+
+ return flags;
+}
+
const uint32_t *
-ice_dev_supported_ptypes_get(struct rte_eth_dev *dev __rte_unused)
+ice_dev_supported_ptypes_get(struct rte_eth_dev *dev)
{
static const uint32_t ptypes[] = {
/* refers to ice_get_default_pkt_type() */
RTE_PTYPE_UNKNOWN
};
- return ptypes;
+ if (dev->rx_pkt_burst == ice_recv_pkts)
+ return ptypes;
+ return NULL;
}
void
dev->data->nb_tx_queues = 0;
}
+uint16_t
+ice_recv_pkts(void *rx_queue,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ struct ice_rx_queue *rxq = rx_queue;
+ volatile union ice_rx_desc *rx_ring = rxq->rx_ring;
+ volatile union ice_rx_desc *rxdp;
+ struct ice_rx_entry *sw_ring = rxq->sw_ring;
+ struct ice_rx_entry *rxe;
+ struct rte_mbuf *nmb; /* new allocated mbuf */
+ struct rte_mbuf *rxm; /* pointer to store old mbuf in SW ring */
+ uint16_t rx_id = rxq->rx_tail;
+ uint16_t nb_rx = 0;
+ uint16_t nb_hold = 0;
+ uint16_t rx_packet_len;
+ uint32_t rx_status;
+ uint64_t qword1;
+ uint64_t dma_addr;
+ uint64_t pkt_flags = 0;
+ uint32_t *ptype_tbl = rxq->vsi->adapter->ptype_tbl;
+ struct rte_eth_dev *dev;
+
+ while (nb_rx < nb_pkts) {
+ rxdp = &rx_ring[rx_id];
+ qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len);
+ rx_status = (qword1 & ICE_RXD_QW1_STATUS_M) >>
+ ICE_RXD_QW1_STATUS_S;
+
+ /* Check the DD bit first */
+ if (!(rx_status & (1 << ICE_RX_DESC_STATUS_DD_S)))
+ break;
+
+ /* allocate mbuf */
+ nmb = rte_mbuf_raw_alloc(rxq->mp);
+ if (unlikely(!nmb)) {
+ dev = ICE_VSI_TO_ETH_DEV(rxq->vsi);
+ dev->data->rx_mbuf_alloc_failed++;
+ break;
+ }
+
+ nb_hold++;
+ rxe = &sw_ring[rx_id]; /* get corresponding mbuf in SW ring */
+ rx_id++;
+ if (unlikely(rx_id == rxq->nb_rx_desc))
+ rx_id = 0;
+ rxm = rxe->mbuf;
+ rxe->mbuf = nmb;
+ dma_addr =
+ rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb));
+
+ /**
+ * fill the read format of descriptor with physic address in
+ * new allocated mbuf: nmb
+ */
+ rxdp->read.hdr_addr = 0;
+ rxdp->read.pkt_addr = dma_addr;
+
+ /* calculate rx_packet_len of the received pkt */
+ rx_packet_len = ((qword1 & ICE_RXD_QW1_LEN_PBUF_M) >>
+ ICE_RXD_QW1_LEN_PBUF_S) - rxq->crc_len;
+
+ /* fill old mbuf with received descriptor: rxd */
+ rxm->data_off = RTE_PKTMBUF_HEADROOM;
+ rte_prefetch0(RTE_PTR_ADD(rxm->buf_addr, RTE_PKTMBUF_HEADROOM));
+ rxm->nb_segs = 1;
+ rxm->next = NULL;
+ rxm->pkt_len = rx_packet_len;
+ rxm->data_len = rx_packet_len;
+ rxm->port = rxq->port_id;
+ rxm->packet_type = ptype_tbl[(uint8_t)((qword1 &
+ ICE_RXD_QW1_PTYPE_M) >>
+ ICE_RXD_QW1_PTYPE_S)];
+ pkt_flags |= ice_rxd_error_to_pkt_flags(qword1);
+ rxm->ol_flags |= pkt_flags;
+ /* copy old mbuf to rx_pkts */
+ rx_pkts[nb_rx++] = rxm;
+ }
+ rxq->rx_tail = rx_id;
+ /**
+ * If the number of free RX descriptors is greater than the RX free
+ * threshold of the queue, advance the receive tail register of queue.
+ * Update that register with the value of the last processed RX
+ * descriptor minus 1.
+ */
+ nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold);
+ if (nb_hold > rxq->rx_free_thresh) {
+ rx_id = (uint16_t)(rx_id == 0 ?
+ (rxq->nb_rx_desc - 1) : (rx_id - 1));
+ /* write TAIL register */
+ ICE_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+ nb_hold = 0;
+ }
+ rxq->nb_rx_hold = nb_hold;
+
+ /* return received packet in the burst */
+ return nb_rx;
+}
+
+static inline void
+ice_txd_enable_checksum(uint64_t ol_flags,
+ uint32_t *td_cmd,
+ uint32_t *td_offset,
+ union ice_tx_offload tx_offload)
+{
+ /* L2 length must be set. */
+ *td_offset |= (tx_offload.l2_len >> 1) <<
+ ICE_TX_DESC_LEN_MACLEN_S;
+
+ /* Enable L3 checksum offloads */
+ if (ol_flags & PKT_TX_IP_CKSUM) {
+ *td_cmd |= ICE_TX_DESC_CMD_IIPT_IPV4_CSUM;
+ *td_offset |= (tx_offload.l3_len >> 2) <<
+ ICE_TX_DESC_LEN_IPLEN_S;
+ } else if (ol_flags & PKT_TX_IPV4) {
+ *td_cmd |= ICE_TX_DESC_CMD_IIPT_IPV4;
+ *td_offset |= (tx_offload.l3_len >> 2) <<
+ ICE_TX_DESC_LEN_IPLEN_S;
+ } else if (ol_flags & PKT_TX_IPV6) {
+ *td_cmd |= ICE_TX_DESC_CMD_IIPT_IPV6;
+ *td_offset |= (tx_offload.l3_len >> 2) <<
+ ICE_TX_DESC_LEN_IPLEN_S;
+ }
+
+ if (ol_flags & PKT_TX_TCP_SEG) {
+ *td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_TCP;
+ *td_offset |= (tx_offload.l4_len >> 2) <<
+ ICE_TX_DESC_LEN_L4_LEN_S;
+ return;
+ }
+
+ /* Enable L4 checksum offloads */
+ switch (ol_flags & PKT_TX_L4_MASK) {
+ case PKT_TX_TCP_CKSUM:
+ *td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_TCP;
+ *td_offset |= (sizeof(struct tcp_hdr) >> 2) <<
+ ICE_TX_DESC_LEN_L4_LEN_S;
+ break;
+ case PKT_TX_SCTP_CKSUM:
+ *td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_SCTP;
+ *td_offset |= (sizeof(struct sctp_hdr) >> 2) <<
+ ICE_TX_DESC_LEN_L4_LEN_S;
+ break;
+ case PKT_TX_UDP_CKSUM:
+ *td_cmd |= ICE_TX_DESC_CMD_L4T_EOFT_UDP;
+ *td_offset |= (sizeof(struct udp_hdr) >> 2) <<
+ ICE_TX_DESC_LEN_L4_LEN_S;
+ break;
+ default:
+ break;
+ }
+}
+
+static inline int
+ice_xmit_cleanup(struct ice_tx_queue *txq)
+{
+ struct ice_tx_entry *sw_ring = txq->sw_ring;
+ volatile struct ice_tx_desc *txd = txq->tx_ring;
+ uint16_t last_desc_cleaned = txq->last_desc_cleaned;
+ uint16_t nb_tx_desc = txq->nb_tx_desc;
+ uint16_t desc_to_clean_to;
+ uint16_t nb_tx_to_clean;
+
+ /* Determine the last descriptor needing to be cleaned */
+ desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->tx_rs_thresh);
+ if (desc_to_clean_to >= nb_tx_desc)
+ desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
+
+ /* Check to make sure the last descriptor to clean is done */
+ desc_to_clean_to = sw_ring[desc_to_clean_to].last_id;
+ if (!(txd[desc_to_clean_to].cmd_type_offset_bsz &
+ rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DESC_DONE))) {
+ PMD_TX_FREE_LOG(DEBUG, "TX descriptor %4u is not done "
+ "(port=%d queue=%d) value=0x%"PRIx64"\n",
+ desc_to_clean_to,
+ txq->port_id, txq->queue_id,
+ txd[desc_to_clean_to].cmd_type_offset_bsz);
+ /* Failed to clean any descriptors */
+ return -1;
+ }
+
+ /* Figure out how many descriptors will be cleaned */
+ if (last_desc_cleaned > desc_to_clean_to)
+ nb_tx_to_clean = (uint16_t)((nb_tx_desc - last_desc_cleaned) +
+ desc_to_clean_to);
+ else
+ nb_tx_to_clean = (uint16_t)(desc_to_clean_to -
+ last_desc_cleaned);
+
+ /* The last descriptor to clean is done, so that means all the
+ * descriptors from the last descriptor that was cleaned
+ * up to the last descriptor with the RS bit set
+ * are done. Only reset the threshold descriptor.
+ */
+ txd[desc_to_clean_to].cmd_type_offset_bsz = 0;
+
+ /* Update the txq to reflect the last descriptor that was cleaned */
+ txq->last_desc_cleaned = desc_to_clean_to;
+ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + nb_tx_to_clean);
+
+ return 0;
+}
+
+/* Check if the context descriptor is needed for TX offloading */
+static inline uint16_t
+ice_calc_context_desc(uint64_t flags)
+{
+ static uint64_t mask = PKT_TX_TCP_SEG | PKT_TX_QINQ;
+
+ return (flags & mask) ? 1 : 0;
+}
+
+/* set ice TSO context descriptor */
+static inline uint64_t
+ice_set_tso_ctx(struct rte_mbuf *mbuf, union ice_tx_offload tx_offload)
+{
+ uint64_t ctx_desc = 0;
+ uint32_t cd_cmd, hdr_len, cd_tso_len;
+
+ if (!tx_offload.l4_len) {
+ PMD_TX_LOG(DEBUG, "L4 length set to 0");
+ return ctx_desc;
+ }
+
+ /**
+ * in case of non tunneling packet, the outer_l2_len and
+ * outer_l3_len must be 0.
+ */
+ hdr_len = tx_offload.outer_l2_len +
+ tx_offload.outer_l3_len +
+ tx_offload.l2_len +
+ tx_offload.l3_len +
+ tx_offload.l4_len;
+
+ cd_cmd = ICE_TX_CTX_DESC_TSO;
+ cd_tso_len = mbuf->pkt_len - hdr_len;
+ ctx_desc |= ((uint64_t)cd_cmd << ICE_TXD_CTX_QW1_CMD_S) |
+ ((uint64_t)cd_tso_len << ICE_TXD_CTX_QW1_TSO_LEN_S) |
+ ((uint64_t)mbuf->tso_segsz << ICE_TXD_CTX_QW1_MSS_S);
+
+ return ctx_desc;
+}
+
+uint16_t
+ice_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+ struct ice_tx_queue *txq;
+ volatile struct ice_tx_desc *tx_ring;
+ volatile struct ice_tx_desc *txd;
+ struct ice_tx_entry *sw_ring;
+ struct ice_tx_entry *txe, *txn;
+ struct rte_mbuf *tx_pkt;
+ struct rte_mbuf *m_seg;
+ uint16_t tx_id;
+ uint16_t nb_tx;
+ uint16_t nb_used;
+ uint16_t nb_ctx;
+ uint32_t td_cmd = 0;
+ uint32_t td_offset = 0;
+ uint32_t td_tag = 0;
+ uint16_t tx_last;
+ uint64_t buf_dma_addr;
+ uint64_t ol_flags;
+ union ice_tx_offload tx_offload = {0};
+
+ txq = tx_queue;
+ sw_ring = txq->sw_ring;
+ tx_ring = txq->tx_ring;
+ tx_id = txq->tx_tail;
+ txe = &sw_ring[tx_id];
+
+ /* Check if the descriptor ring needs to be cleaned. */
+ if (txq->nb_tx_free < txq->tx_free_thresh)
+ ice_xmit_cleanup(txq);
+
+ for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
+ tx_pkt = *tx_pkts++;
+
+ td_cmd = 0;
+ ol_flags = tx_pkt->ol_flags;
+ tx_offload.l2_len = tx_pkt->l2_len;
+ tx_offload.l3_len = tx_pkt->l3_len;
+ tx_offload.outer_l2_len = tx_pkt->outer_l2_len;
+ tx_offload.outer_l3_len = tx_pkt->outer_l3_len;
+ tx_offload.l4_len = tx_pkt->l4_len;
+ tx_offload.tso_segsz = tx_pkt->tso_segsz;
+ /* Calculate the number of context descriptors needed. */
+ nb_ctx = ice_calc_context_desc(ol_flags);
+
+ /* The number of descriptors that must be allocated for
+ * a packet equals to the number of the segments of that
+ * packet plus the number of context descriptor if needed.
+ */
+ nb_used = (uint16_t)(tx_pkt->nb_segs + nb_ctx);
+ tx_last = (uint16_t)(tx_id + nb_used - 1);
+
+ /* Circular ring */
+ if (tx_last >= txq->nb_tx_desc)
+ tx_last = (uint16_t)(tx_last - txq->nb_tx_desc);
+
+ if (nb_used > txq->nb_tx_free) {
+ if (ice_xmit_cleanup(txq) != 0) {
+ if (nb_tx == 0)
+ return 0;
+ goto end_of_tx;
+ }
+ if (unlikely(nb_used > txq->tx_rs_thresh)) {
+ while (nb_used > txq->nb_tx_free) {
+ if (ice_xmit_cleanup(txq) != 0) {
+ if (nb_tx == 0)
+ return 0;
+ goto end_of_tx;
+ }
+ }
+ }
+ }
+
+ /* Enable checksum offloading */
+ if (ol_flags & ICE_TX_CKSUM_OFFLOAD_MASK) {
+ ice_txd_enable_checksum(ol_flags, &td_cmd,
+ &td_offset, tx_offload);
+ }
+
+ if (nb_ctx) {
+ /* Setup TX context descriptor if required */
+ uint64_t cd_type_cmd_tso_mss = ICE_TX_DESC_DTYPE_CTX;
+
+ txn = &sw_ring[txe->next_id];
+ RTE_MBUF_PREFETCH_TO_FREE(txn->mbuf);
+ if (txe->mbuf) {
+ rte_pktmbuf_free_seg(txe->mbuf);
+ txe->mbuf = NULL;
+ }
+
+ if (ol_flags & PKT_TX_TCP_SEG)
+ cd_type_cmd_tso_mss |=
+ ice_set_tso_ctx(tx_pkt, tx_offload);
+
+ txe->last_id = tx_last;
+ tx_id = txe->next_id;
+ txe = txn;
+ }
+ m_seg = tx_pkt;
+
+ do {
+ txd = &tx_ring[tx_id];
+ txn = &sw_ring[txe->next_id];
+
+ if (txe->mbuf)
+ rte_pktmbuf_free_seg(txe->mbuf);
+ txe->mbuf = m_seg;
+
+ /* Setup TX Descriptor */
+ buf_dma_addr = rte_mbuf_data_iova(m_seg);
+ txd->buf_addr = rte_cpu_to_le_64(buf_dma_addr);
+ txd->cmd_type_offset_bsz =
+ rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DATA |
+ ((uint64_t)td_cmd << ICE_TXD_QW1_CMD_S) |
+ ((uint64_t)td_offset << ICE_TXD_QW1_OFFSET_S) |
+ ((uint64_t)m_seg->data_len <<
+ ICE_TXD_QW1_TX_BUF_SZ_S) |
+ ((uint64_t)td_tag << ICE_TXD_QW1_L2TAG1_S));
+
+ txe->last_id = tx_last;
+ tx_id = txe->next_id;
+ txe = txn;
+ m_seg = m_seg->next;
+ } while (m_seg);
+
+ /* fill the last descriptor with End of Packet (EOP) bit */
+ td_cmd |= ICE_TX_DESC_CMD_EOP;
+ txq->nb_tx_used = (uint16_t)(txq->nb_tx_used + nb_used);
+ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free - nb_used);
+
+ /* set RS bit on the last descriptor of one packet */
+ if (txq->nb_tx_used >= txq->tx_rs_thresh) {
+ PMD_TX_FREE_LOG(DEBUG,
+ "Setting RS bit on TXD id="
+ "%4u (port=%d queue=%d)",
+ tx_last, txq->port_id, txq->queue_id);
+
+ td_cmd |= ICE_TX_DESC_CMD_RS;
+
+ /* Update txq RS bit counters */
+ txq->nb_tx_used = 0;
+ }
+ txd->cmd_type_offset_bsz |=
+ rte_cpu_to_le_64(((uint64_t)td_cmd) <<
+ ICE_TXD_QW1_CMD_S);
+ }
+end_of_tx:
+ rte_wmb();
+
+ /* update Tail register */
+ ICE_PCI_REG_WRITE(txq->qtx_tail, tx_id);
+ txq->tx_tail = tx_id;
+
+ return nb_tx;
+}
+
+void __attribute__((cold))
+ice_set_rx_function(struct rte_eth_dev *dev)
+{
+ dev->rx_pkt_burst = ice_recv_pkts;
+}
+
+/*********************************************************************
+ *
+ * TX prep functions
+ *
+ **********************************************************************/
+/* The default values of TSO MSS */
+#define ICE_MIN_TSO_MSS 64
+#define ICE_MAX_TSO_MSS 9728
+#define ICE_MAX_TSO_FRAME_SIZE 262144
+uint16_t
+ice_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ int i, ret;
+ uint64_t ol_flags;
+ struct rte_mbuf *m;
+
+ for (i = 0; i < nb_pkts; i++) {
+ m = tx_pkts[i];
+ ol_flags = m->ol_flags;
+
+ if (ol_flags & PKT_TX_TCP_SEG &&
+ (m->tso_segsz < ICE_MIN_TSO_MSS ||
+ m->tso_segsz > ICE_MAX_TSO_MSS ||
+ m->pkt_len > ICE_MAX_TSO_FRAME_SIZE)) {
+ /**
+ * MSS outside the range are considered malicious
+ */
+ rte_errno = -EINVAL;
+ return i;
+ }
+
+#ifdef RTE_LIBRTE_ETHDEV_DEBUG
+ ret = rte_validate_tx_offload(m);
+ if (ret != 0) {
+ rte_errno = ret;
+ return i;
+ }
+#endif
+ ret = rte_net_intel_cksum_prepare(m);
+ if (ret != 0) {
+ rte_errno = ret;
+ return i;
+ }
+ }
+ return i;
+}
+
+void __attribute__((cold))
+ice_set_tx_function(struct rte_eth_dev *dev)
+{
+ dev->tx_pkt_burst = ice_xmit_pkts;
+ dev->tx_pkt_prepare = ice_prep_pkts;
+}
+
/* For each value it means, datasheet of hardware can tell more details
*
* @note: fix ice_dev_supported_ptypes_get() if any change here.
git.droids-corp.org / dpdk.git / blobdiff