#include <rte_mbuf.h>
#include <rte_malloc.h>
#include <rte_ether.h>
-#include <rte_ethdev.h>
+#include <rte_ethdev_driver.h>
#include <rte_tcp.h>
#include <rte_sctp.h>
#include <rte_udp.h>
check_rx_thresh(uint16_t nb_desc, uint16_t thresh)
{
/* The following constraints must be satisfied:
- * thresh >= AVF_RX_MAX_BURST
* thresh < rxq->nb_rx_desc
- * (rxq->nb_rx_desc % thresh) == 0
*/
- if (thresh < AVF_RX_MAX_BURST ||
- thresh >= nb_desc ||
- (nb_desc % thresh != 0)) {
- PMD_INIT_LOG(ERR, "rx_free_thresh (%u) must be less than %u, "
- "greater than or equal to %u, "
- "and a divisor of %u",
- thresh, nb_desc, AVF_RX_MAX_BURST, nb_desc);
+ if (thresh >= nb_desc) {
+ PMD_INIT_LOG(ERR, "rx_free_thresh (%u) must be less than %u",
+ thresh, nb_desc);
return -EINVAL;
}
return 0;
return 0;
}
+#ifdef RTE_LIBRTE_AVF_INC_VECTOR
+static inline bool
+check_rx_vec_allow(struct avf_rx_queue *rxq)
+{
+ if (rxq->rx_free_thresh >= AVF_VPMD_RX_MAX_BURST &&
+ rxq->nb_rx_desc % rxq->rx_free_thresh == 0) {
+ PMD_INIT_LOG(DEBUG, "Vector Rx can be enabled on this rxq.");
+ return TRUE;
+ }
+
+ PMD_INIT_LOG(DEBUG, "Vector Rx cannot be enabled on this rxq.");
+ return FALSE;
+}
+
+static inline bool
+check_tx_vec_allow(struct avf_tx_queue *txq)
+{
+ if (!(txq->offloads & AVF_NO_VECTOR_FLAGS) &&
+ txq->rs_thresh >= AVF_VPMD_TX_MAX_BURST &&
+ txq->rs_thresh <= AVF_VPMD_TX_MAX_FREE_BUF) {
+ PMD_INIT_LOG(DEBUG, "Vector tx can be enabled on this txq.");
+ return TRUE;
+ }
+ PMD_INIT_LOG(DEBUG, "Vector Tx cannot be enabled on this txq.");
+ return FALSE;
+}
+#endif
+
+static inline bool
+check_rx_bulk_allow(struct avf_rx_queue *rxq)
+{
+ int ret = TRUE;
+
+ if (!(rxq->rx_free_thresh >= AVF_RX_MAX_BURST)) {
+ PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
+ "rxq->rx_free_thresh=%d, "
+ "AVF_RX_MAX_BURST=%d",
+ rxq->rx_free_thresh, AVF_RX_MAX_BURST);
+ ret = FALSE;
+ } else if (rxq->nb_rx_desc % rxq->rx_free_thresh != 0) {
+ PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: "
+ "rxq->nb_rx_desc=%d, "
+ "rxq->rx_free_thresh=%d",
+ rxq->nb_rx_desc, rxq->rx_free_thresh);
+ ret = FALSE;
+ }
+ return ret;
+}
+
static inline void
reset_rx_queue(struct avf_rx_queue *rxq)
{
for (i = 0; i < AVF_RX_MAX_BURST; i++)
rxq->sw_ring[rxq->nb_rx_desc + i] = &rxq->fake_mbuf;
+ /* for rx bulk */
+ rxq->rx_nb_avail = 0;
+ rxq->rx_next_avail = 0;
+ rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
+
rxq->rx_tail = 0;
rxq->nb_rx_hold = 0;
rxq->pkt_first_seg = NULL;
rxq->sw_ring[i] = NULL;
}
}
+
+ /* for rx bulk */
+ if (rxq->rx_nb_avail == 0)
+ return;
+ for (i = 0; i < rxq->rx_nb_avail; i++) {
+ struct rte_mbuf *mbuf;
+
+ mbuf = rxq->rx_stage[rxq->rx_next_avail + i];
+ rte_pktmbuf_free_seg(mbuf);
+ }
+ rxq->rx_nb_avail = 0;
}
static inline void
}
}
+static const struct avf_rxq_ops def_rxq_ops = {
+ .release_mbufs = release_rxq_mbufs,
+};
+
+static const struct avf_txq_ops def_txq_ops = {
+ .release_mbufs = release_txq_mbufs,
+};
+
int
avf_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
uint16_t nb_desc, unsigned int socket_id,
rxq->q_set = TRUE;
dev->data->rx_queues[queue_idx] = rxq;
rxq->qrx_tail = hw->hw_addr + AVF_QRX_TAIL1(rxq->queue_id);
+ rxq->ops = &def_rxq_ops;
+
+ if (check_rx_bulk_allow(rxq) == TRUE) {
+ PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
+ "satisfied. Rx Burst Bulk Alloc function will be "
+ "used on port=%d, queue=%d.",
+ rxq->port_id, rxq->queue_id);
+ } else {
+ PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
+ "not satisfied, Scattered Rx is requested "
+ "on port=%d, queue=%d.",
+ rxq->port_id, rxq->queue_id);
+ ad->rx_bulk_alloc_allowed = false;
+ }
+#ifdef RTE_LIBRTE_AVF_INC_VECTOR
+ if (check_rx_vec_allow(rxq) == FALSE)
+ ad->rx_vec_allowed = false;
+#endif
return 0;
}
const struct rte_eth_txconf *tx_conf)
{
struct avf_hw *hw = AVF_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ struct avf_adapter *ad =
+ AVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
struct avf_tx_queue *txq;
const struct rte_memzone *mz;
uint32_t ring_size;
uint16_t tx_rs_thresh, tx_free_thresh;
uint16_t i, base, bsf, tc_mapping;
+ uint64_t offloads;
PMD_INIT_FUNC_TRACE();
+ offloads = tx_conf->offloads | dev->data->dev_conf.txmode.offloads;
+
if (nb_desc % AVF_ALIGN_RING_DESC != 0 ||
nb_desc > AVF_MAX_RING_DESC ||
nb_desc < AVF_MIN_RING_DESC) {
txq->free_thresh = tx_free_thresh;
txq->queue_id = queue_idx;
txq->port_id = dev->data->port_id;
- txq->txq_flags = tx_conf->txq_flags;
+ txq->offloads = offloads;
txq->tx_deferred_start = tx_conf->tx_deferred_start;
/* Allocate software ring */
txq->q_set = TRUE;
dev->data->tx_queues[queue_idx] = txq;
txq->qtx_tail = hw->hw_addr + AVF_QTX_TAIL1(queue_idx);
+ txq->ops = &def_txq_ops;
+
+#ifdef RTE_LIBRTE_AVF_INC_VECTOR
+ if (check_tx_vec_allow(txq) == FALSE)
+ ad->tx_vec_allowed = false;
+#endif
return 0;
}
}
rxq = dev->data->rx_queues[rx_queue_id];
- release_rxq_mbufs(rxq);
+ rxq->ops->release_mbufs(rxq);
reset_rx_queue(rxq);
dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
}
txq = dev->data->tx_queues[tx_queue_id];
- release_txq_mbufs(txq);
+ txq->ops->release_mbufs(txq);
reset_tx_queue(txq);
dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
if (!q)
return;
- release_rxq_mbufs(q);
+ q->ops->release_mbufs(q);
rte_free(q->sw_ring);
rte_memzone_free(q->mz);
rte_free(q);
if (!q)
return;
- release_txq_mbufs(q);
+ q->ops->release_mbufs(q);
rte_free(q->sw_ring);
rte_memzone_free(q->mz);
rte_free(q);
txq = dev->data->tx_queues[i];
if (!txq)
continue;
- release_txq_mbufs(txq);
+ txq->ops->release_mbufs(txq);
reset_tx_queue(txq);
dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
}
rxq = dev->data->rx_queues[i];
if (!rxq)
continue;
- release_rxq_mbufs(rxq);
+ rxq->ops->release_mbufs(rxq);
reset_rx_queue(rxq);
dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
}
}
+
+static inline void
+avf_rxd_to_vlan_tci(struct rte_mbuf *mb, volatile union avf_rx_desc *rxdp)
+{
+ if (rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) &
+ (1 << AVF_RX_DESC_STATUS_L2TAG1P_SHIFT)) {
+ mb->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
+ mb->vlan_tci =
+ rte_le_to_cpu_16(rxdp->wb.qword0.lo_dword.l2tag1);
+ } else {
+ mb->vlan_tci = 0;
+ }
+}
+
+/* Translate the rx descriptor status and error fields to pkt flags */
+static inline uint64_t
+avf_rxd_to_pkt_flags(uint64_t qword)
+{
+ uint64_t flags;
+ uint64_t error_bits = (qword >> AVF_RXD_QW1_ERROR_SHIFT);
+
+#define AVF_RX_ERR_BITS 0x3f
+
+ /* Check if RSS_HASH */
+ flags = (((qword >> AVF_RX_DESC_STATUS_FLTSTAT_SHIFT) &
+ AVF_RX_DESC_FLTSTAT_RSS_HASH) ==
+ AVF_RX_DESC_FLTSTAT_RSS_HASH) ? PKT_RX_RSS_HASH : 0;
+
+ if (likely((error_bits & AVF_RX_ERR_BITS) == 0)) {
+ flags |= (PKT_RX_IP_CKSUM_GOOD | PKT_RX_L4_CKSUM_GOOD);
+ return flags;
+ }
+
+ if (unlikely(error_bits & (1 << AVF_RX_DESC_ERROR_IPE_SHIFT)))
+ flags |= PKT_RX_IP_CKSUM_BAD;
+ else
+ flags |= PKT_RX_IP_CKSUM_GOOD;
+
+ if (unlikely(error_bits & (1 << AVF_RX_DESC_ERROR_L4E_SHIFT)))
+ flags |= PKT_RX_L4_CKSUM_BAD;
+ else
+ flags |= PKT_RX_L4_CKSUM_GOOD;
+
+ /* TODO: Oversize error bit is not processed here */
+
+ return flags;
+}
+
+/* implement recv_pkts */
+uint16_t
+avf_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+{
+ volatile union avf_rx_desc *rx_ring;
+ volatile union avf_rx_desc *rxdp;
+ struct avf_rx_queue *rxq;
+ union avf_rx_desc rxd;
+ struct rte_mbuf *rxe;
+ struct rte_eth_dev *dev;
+ struct rte_mbuf *rxm;
+ struct rte_mbuf *nmb;
+ uint16_t nb_rx;
+ uint32_t rx_status;
+ uint64_t qword1;
+ uint16_t rx_packet_len;
+ uint16_t rx_id, nb_hold;
+ uint64_t dma_addr;
+ uint64_t pkt_flags;
+ static const uint32_t ptype_tbl[UINT8_MAX + 1] __rte_cache_aligned = {
+ /* [0] reserved */
+ [1] = RTE_PTYPE_L2_ETHER,
+ /* [2] - [21] reserved */
+ [22] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_FRAG,
+ [23] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_NONFRAG,
+ [24] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_UDP,
+ /* [25] reserved */
+ [26] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_TCP,
+ [27] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_SCTP,
+ [28] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_ICMP,
+ /* All others reserved */
+ };
+
+ nb_rx = 0;
+ nb_hold = 0;
+ rxq = rx_queue;
+ rx_id = rxq->rx_tail;
+ rx_ring = rxq->rx_ring;
+
+ 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 & AVF_RXD_QW1_STATUS_MASK) >>
+ AVF_RXD_QW1_STATUS_SHIFT;
+
+ /* Check the DD bit first */
+ if (!(rx_status & (1 << AVF_RX_DESC_STATUS_DD_SHIFT)))
+ break;
+ AVF_DUMP_RX_DESC(rxq, rxdp, rx_id);
+
+ nmb = rte_mbuf_raw_alloc(rxq->mp);
+ if (unlikely(!nmb)) {
+ dev = &rte_eth_devices[rxq->port_id];
+ dev->data->rx_mbuf_alloc_failed++;
+ PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
+ "queue_id=%u", rxq->port_id, rxq->queue_id);
+ break;
+ }
+
+ rxd = *rxdp;
+ nb_hold++;
+ rxe = rxq->sw_ring[rx_id];
+ rx_id++;
+ if (unlikely(rx_id == rxq->nb_rx_desc))
+ rx_id = 0;
+
+ /* Prefetch next mbuf */
+ rte_prefetch0(rxq->sw_ring[rx_id]);
+
+ /* When next RX descriptor is on a cache line boundary,
+ * prefetch the next 4 RX descriptors and next 8 pointers
+ * to mbufs.
+ */
+ if ((rx_id & 0x3) == 0) {
+ rte_prefetch0(&rx_ring[rx_id]);
+ rte_prefetch0(rxq->sw_ring[rx_id]);
+ }
+ rxm = rxe;
+ rxe = nmb;
+ dma_addr =
+ rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb));
+ rxdp->read.hdr_addr = 0;
+ rxdp->read.pkt_addr = dma_addr;
+
+ rx_packet_len = ((qword1 & AVF_RXD_QW1_LENGTH_PBUF_MASK) >>
+ AVF_RXD_QW1_LENGTH_PBUF_SHIFT) - rxq->crc_len;
+
+ 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->ol_flags = 0;
+ avf_rxd_to_vlan_tci(rxm, &rxd);
+ pkt_flags = avf_rxd_to_pkt_flags(qword1);
+ rxm->packet_type =
+ ptype_tbl[(uint8_t)((qword1 &
+ AVF_RXD_QW1_PTYPE_MASK) >> AVF_RXD_QW1_PTYPE_SHIFT)];
+
+ if (pkt_flags & PKT_RX_RSS_HASH)
+ rxm->hash.rss =
+ rte_le_to_cpu_32(rxd.wb.qword0.hi_dword.rss);
+
+ rxm->ol_flags |= pkt_flags;
+
+ 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) {
+ PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
+ "nb_hold=%u nb_rx=%u",
+ rxq->port_id, rxq->queue_id,
+ rx_id, nb_hold, nb_rx);
+ rx_id = (uint16_t)((rx_id == 0) ?
+ (rxq->nb_rx_desc - 1) : (rx_id - 1));
+ AVF_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+ nb_hold = 0;
+ }
+ rxq->nb_rx_hold = nb_hold;
+
+ return nb_rx;
+}
+
+/* implement recv_scattered_pkts */
+uint16_t
+avf_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ struct avf_rx_queue *rxq = rx_queue;
+ union avf_rx_desc rxd;
+ struct rte_mbuf *rxe;
+ struct rte_mbuf *first_seg = rxq->pkt_first_seg;
+ struct rte_mbuf *last_seg = rxq->pkt_last_seg;
+ struct rte_mbuf *nmb, *rxm;
+ uint16_t rx_id = rxq->rx_tail;
+ uint16_t nb_rx = 0, nb_hold = 0, rx_packet_len;
+ struct rte_eth_dev *dev;
+ uint32_t rx_status;
+ uint64_t qword1;
+ uint64_t dma_addr;
+ uint64_t pkt_flags;
+
+ volatile union avf_rx_desc *rx_ring = rxq->rx_ring;
+ volatile union avf_rx_desc *rxdp;
+ static const uint32_t ptype_tbl[UINT8_MAX + 1] __rte_cache_aligned = {
+ /* [0] reserved */
+ [1] = RTE_PTYPE_L2_ETHER,
+ /* [2] - [21] reserved */
+ [22] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_FRAG,
+ [23] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_NONFRAG,
+ [24] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_UDP,
+ /* [25] reserved */
+ [26] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_TCP,
+ [27] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_SCTP,
+ [28] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_ICMP,
+ /* All others reserved */
+ };
+
+ 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 & AVF_RXD_QW1_STATUS_MASK) >>
+ AVF_RXD_QW1_STATUS_SHIFT;
+
+ /* Check the DD bit */
+ if (!(rx_status & (1 << AVF_RX_DESC_STATUS_DD_SHIFT)))
+ break;
+ AVF_DUMP_RX_DESC(rxq, rxdp, rx_id);
+
+ nmb = rte_mbuf_raw_alloc(rxq->mp);
+ if (unlikely(!nmb)) {
+ PMD_RX_LOG(DEBUG, "RX mbuf alloc failed port_id=%u "
+ "queue_id=%u", rxq->port_id, rxq->queue_id);
+ dev = &rte_eth_devices[rxq->port_id];
+ dev->data->rx_mbuf_alloc_failed++;
+ break;
+ }
+
+ rxd = *rxdp;
+ nb_hold++;
+ rxe = rxq->sw_ring[rx_id];
+ rx_id++;
+ if (rx_id == rxq->nb_rx_desc)
+ rx_id = 0;
+
+ /* Prefetch next mbuf */
+ rte_prefetch0(rxq->sw_ring[rx_id]);
+
+ /* When next RX descriptor is on a cache line boundary,
+ * prefetch the next 4 RX descriptors and next 8 pointers
+ * to mbufs.
+ */
+ if ((rx_id & 0x3) == 0) {
+ rte_prefetch0(&rx_ring[rx_id]);
+ rte_prefetch0(rxq->sw_ring[rx_id]);
+ }
+
+ rxm = rxe;
+ rxe = nmb;
+ dma_addr =
+ rte_cpu_to_le_64(rte_mbuf_data_iova_default(nmb));
+
+ /* Set data buffer address and data length of the mbuf */
+ rxdp->read.hdr_addr = 0;
+ rxdp->read.pkt_addr = dma_addr;
+ rx_packet_len = (qword1 & AVF_RXD_QW1_LENGTH_PBUF_MASK) >>
+ AVF_RXD_QW1_LENGTH_PBUF_SHIFT;
+ rxm->data_len = rx_packet_len;
+ rxm->data_off = RTE_PKTMBUF_HEADROOM;
+
+ /* If this is the first buffer of the received packet, set the
+ * pointer to the first mbuf of the packet and initialize its
+ * context. Otherwise, update the total length and the number
+ * of segments of the current scattered packet, and update the
+ * pointer to the last mbuf of the current packet.
+ */
+ if (!first_seg) {
+ first_seg = rxm;
+ first_seg->nb_segs = 1;
+ first_seg->pkt_len = rx_packet_len;
+ } else {
+ first_seg->pkt_len =
+ (uint16_t)(first_seg->pkt_len +
+ rx_packet_len);
+ first_seg->nb_segs++;
+ last_seg->next = rxm;
+ }
+
+ /* If this is not the last buffer of the received packet,
+ * update the pointer to the last mbuf of the current scattered
+ * packet and continue to parse the RX ring.
+ */
+ if (!(rx_status & (1 << AVF_RX_DESC_STATUS_EOF_SHIFT))) {
+ last_seg = rxm;
+ continue;
+ }
+
+ /* This is the last buffer of the received packet. If the CRC
+ * is not stripped by the hardware:
+ * - Subtract the CRC length from the total packet length.
+ * - If the last buffer only contains the whole CRC or a part
+ * of it, free the mbuf associated to the last buffer. If part
+ * of the CRC is also contained in the previous mbuf, subtract
+ * the length of that CRC part from the data length of the
+ * previous mbuf.
+ */
+ rxm->next = NULL;
+ if (unlikely(rxq->crc_len > 0)) {
+ first_seg->pkt_len -= ETHER_CRC_LEN;
+ if (rx_packet_len <= ETHER_CRC_LEN) {
+ rte_pktmbuf_free_seg(rxm);
+ first_seg->nb_segs--;
+ last_seg->data_len =
+ (uint16_t)(last_seg->data_len -
+ (ETHER_CRC_LEN - rx_packet_len));
+ last_seg->next = NULL;
+ } else
+ rxm->data_len = (uint16_t)(rx_packet_len -
+ ETHER_CRC_LEN);
+ }
+
+ first_seg->port = rxq->port_id;
+ first_seg->ol_flags = 0;
+ avf_rxd_to_vlan_tci(first_seg, &rxd);
+ pkt_flags = avf_rxd_to_pkt_flags(qword1);
+ first_seg->packet_type =
+ ptype_tbl[(uint8_t)((qword1 &
+ AVF_RXD_QW1_PTYPE_MASK) >> AVF_RXD_QW1_PTYPE_SHIFT)];
+
+ if (pkt_flags & PKT_RX_RSS_HASH)
+ first_seg->hash.rss =
+ rte_le_to_cpu_32(rxd.wb.qword0.hi_dword.rss);
+
+ first_seg->ol_flags |= pkt_flags;
+
+ /* Prefetch data of first segment, if configured to do so. */
+ rte_prefetch0(RTE_PTR_ADD(first_seg->buf_addr,
+ first_seg->data_off));
+ rx_pkts[nb_rx++] = first_seg;
+ first_seg = NULL;
+ }
+
+ /* Record index of the next RX descriptor to probe. */
+ rxq->rx_tail = rx_id;
+ rxq->pkt_first_seg = first_seg;
+ rxq->pkt_last_seg = last_seg;
+
+ /* If the number of free RX descriptors is greater than the RX free
+ * threshold of the queue, advance the Receive Descriptor Tail (RDT)
+ * register. Update the RDT with the value of the last processed RX
+ * descriptor minus 1, to guarantee that the RDT register is never
+ * equal to the RDH register, which creates a "full" ring situtation
+ * from the hardware point of view.
+ */
+ nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold);
+ if (nb_hold > rxq->rx_free_thresh) {
+ PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u "
+ "nb_hold=%u nb_rx=%u",
+ rxq->port_id, rxq->queue_id,
+ rx_id, nb_hold, nb_rx);
+ rx_id = (uint16_t)(rx_id == 0 ?
+ (rxq->nb_rx_desc - 1) : (rx_id - 1));
+ AVF_PCI_REG_WRITE(rxq->qrx_tail, rx_id);
+ nb_hold = 0;
+ }
+ rxq->nb_rx_hold = nb_hold;
+
+ return nb_rx;
+}
+
+#define AVF_LOOK_AHEAD 8
+static inline int
+avf_rx_scan_hw_ring(struct avf_rx_queue *rxq)
+{
+ volatile union avf_rx_desc *rxdp;
+ struct rte_mbuf **rxep;
+ struct rte_mbuf *mb;
+ uint16_t pkt_len;
+ uint64_t qword1;
+ uint32_t rx_status;
+ int32_t s[AVF_LOOK_AHEAD], nb_dd;
+ int32_t i, j, nb_rx = 0;
+ uint64_t pkt_flags;
+ static const uint32_t ptype_tbl[UINT8_MAX + 1] __rte_cache_aligned = {
+ /* [0] reserved */
+ [1] = RTE_PTYPE_L2_ETHER,
+ /* [2] - [21] reserved */
+ [22] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_FRAG,
+ [23] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_NONFRAG,
+ [24] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_UDP,
+ /* [25] reserved */
+ [26] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_TCP,
+ [27] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_SCTP,
+ [28] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
+ RTE_PTYPE_L4_ICMP,
+ /* All others reserved */
+ };
+
+ rxdp = &rxq->rx_ring[rxq->rx_tail];
+ rxep = &rxq->sw_ring[rxq->rx_tail];
+
+ qword1 = rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len);
+ rx_status = (qword1 & AVF_RXD_QW1_STATUS_MASK) >>
+ AVF_RXD_QW1_STATUS_SHIFT;
+
+ /* Make sure there is at least 1 packet to receive */
+ if (!(rx_status & (1 << AVF_RX_DESC_STATUS_DD_SHIFT)))
+ return 0;
+
+ /* Scan LOOK_AHEAD descriptors at a time to determine which
+ * descriptors reference packets that are ready to be received.
+ */
+ for (i = 0; i < AVF_RX_MAX_BURST; i += AVF_LOOK_AHEAD,
+ rxdp += AVF_LOOK_AHEAD, rxep += AVF_LOOK_AHEAD) {
+ /* Read desc statuses backwards to avoid race condition */
+ for (j = AVF_LOOK_AHEAD - 1; j >= 0; j--) {
+ qword1 = rte_le_to_cpu_64(
+ rxdp[j].wb.qword1.status_error_len);
+ s[j] = (qword1 & AVF_RXD_QW1_STATUS_MASK) >>
+ AVF_RXD_QW1_STATUS_SHIFT;
+ }
+
+ rte_smp_rmb();
+
+ /* Compute how many status bits were set */
+ for (j = 0, nb_dd = 0; j < AVF_LOOK_AHEAD; j++)
+ nb_dd += s[j] & (1 << AVF_RX_DESC_STATUS_DD_SHIFT);
+
+ nb_rx += nb_dd;
+
+ /* Translate descriptor info to mbuf parameters */
+ for (j = 0; j < nb_dd; j++) {
+ AVF_DUMP_RX_DESC(rxq, &rxdp[j],
+ rxq->rx_tail + i * AVF_LOOK_AHEAD + j);
+
+ mb = rxep[j];
+ qword1 = rte_le_to_cpu_64
+ (rxdp[j].wb.qword1.status_error_len);
+ pkt_len = ((qword1 & AVF_RXD_QW1_LENGTH_PBUF_MASK) >>
+ AVF_RXD_QW1_LENGTH_PBUF_SHIFT) - rxq->crc_len;
+ mb->data_len = pkt_len;
+ mb->pkt_len = pkt_len;
+ mb->ol_flags = 0;
+ avf_rxd_to_vlan_tci(mb, &rxdp[j]);
+ pkt_flags = avf_rxd_to_pkt_flags(qword1);
+ mb->packet_type =
+ ptype_tbl[(uint8_t)((qword1 &
+ AVF_RXD_QW1_PTYPE_MASK) >>
+ AVF_RXD_QW1_PTYPE_SHIFT)];
+
+ if (pkt_flags & PKT_RX_RSS_HASH)
+ mb->hash.rss = rte_le_to_cpu_32(
+ rxdp[j].wb.qword0.hi_dword.rss);
+
+ mb->ol_flags |= pkt_flags;
+ }
+
+ for (j = 0; j < AVF_LOOK_AHEAD; j++)
+ rxq->rx_stage[i + j] = rxep[j];
+
+ if (nb_dd != AVF_LOOK_AHEAD)
+ break;
+ }
+
+ /* Clear software ring entries */
+ for (i = 0; i < nb_rx; i++)
+ rxq->sw_ring[rxq->rx_tail + i] = NULL;
+
+ return nb_rx;
+}
+
+static inline uint16_t
+avf_rx_fill_from_stage(struct avf_rx_queue *rxq,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ uint16_t i;
+ struct rte_mbuf **stage = &rxq->rx_stage[rxq->rx_next_avail];
+
+ nb_pkts = (uint16_t)RTE_MIN(nb_pkts, rxq->rx_nb_avail);
+
+ for (i = 0; i < nb_pkts; i++)
+ rx_pkts[i] = stage[i];
+
+ rxq->rx_nb_avail = (uint16_t)(rxq->rx_nb_avail - nb_pkts);
+ rxq->rx_next_avail = (uint16_t)(rxq->rx_next_avail + nb_pkts);
+
+ return nb_pkts;
+}
+
+static inline int
+avf_rx_alloc_bufs(struct avf_rx_queue *rxq)
+{
+ volatile union avf_rx_desc *rxdp;
+ struct rte_mbuf **rxep;
+ struct rte_mbuf *mb;
+ uint16_t alloc_idx, i;
+ uint64_t dma_addr;
+ int diag;
+
+ /* Allocate buffers in bulk */
+ alloc_idx = (uint16_t)(rxq->rx_free_trigger -
+ (rxq->rx_free_thresh - 1));
+ rxep = &rxq->sw_ring[alloc_idx];
+ diag = rte_mempool_get_bulk(rxq->mp, (void *)rxep,
+ rxq->rx_free_thresh);
+ if (unlikely(diag != 0)) {
+ PMD_RX_LOG(ERR, "Failed to get mbufs in bulk");
+ return -ENOMEM;
+ }
+
+ rxdp = &rxq->rx_ring[alloc_idx];
+ for (i = 0; i < rxq->rx_free_thresh; i++) {
+ if (likely(i < (rxq->rx_free_thresh - 1)))
+ /* Prefetch next mbuf */
+ rte_prefetch0(rxep[i + 1]);
+
+ mb = rxep[i];
+ rte_mbuf_refcnt_set(mb, 1);
+ mb->next = NULL;
+ mb->data_off = RTE_PKTMBUF_HEADROOM;
+ mb->nb_segs = 1;
+ mb->port = rxq->port_id;
+ dma_addr = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mb));
+ rxdp[i].read.hdr_addr = 0;
+ rxdp[i].read.pkt_addr = dma_addr;
+ }
+
+ /* Update rx tail register */
+ rte_wmb();
+ AVF_PCI_REG_WRITE_RELAXED(rxq->qrx_tail, rxq->rx_free_trigger);
+
+ rxq->rx_free_trigger =
+ (uint16_t)(rxq->rx_free_trigger + rxq->rx_free_thresh);
+ if (rxq->rx_free_trigger >= rxq->nb_rx_desc)
+ rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1);
+
+ return 0;
+}
+
+static inline uint16_t
+rx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+{
+ struct avf_rx_queue *rxq = (struct avf_rx_queue *)rx_queue;
+ struct rte_eth_dev *dev;
+ uint16_t nb_rx = 0;
+
+ if (!nb_pkts)
+ return 0;
+
+ if (rxq->rx_nb_avail)
+ return avf_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
+
+ nb_rx = (uint16_t)avf_rx_scan_hw_ring(rxq);
+ rxq->rx_next_avail = 0;
+ rxq->rx_nb_avail = nb_rx;
+ rxq->rx_tail = (uint16_t)(rxq->rx_tail + nb_rx);
+
+ if (rxq->rx_tail > rxq->rx_free_trigger) {
+ if (avf_rx_alloc_bufs(rxq) != 0) {
+ uint16_t i, j;
+
+ /* TODO: count rx_mbuf_alloc_failed here */
+
+ rxq->rx_nb_avail = 0;
+ rxq->rx_tail = (uint16_t)(rxq->rx_tail - nb_rx);
+ for (i = 0, j = rxq->rx_tail; i < nb_rx; i++, j++)
+ rxq->sw_ring[j] = rxq->rx_stage[i];
+
+ return 0;
+ }
+ }
+
+ if (rxq->rx_tail >= rxq->nb_rx_desc)
+ rxq->rx_tail = 0;
+
+ PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_tail=%u, nb_rx=%u",
+ rxq->port_id, rxq->queue_id,
+ rxq->rx_tail, nb_rx);
+
+ if (rxq->rx_nb_avail)
+ return avf_rx_fill_from_stage(rxq, rx_pkts, nb_pkts);
+
+ return 0;
+}
+
+static uint16_t
+avf_recv_pkts_bulk_alloc(void *rx_queue,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ uint16_t nb_rx = 0, n, count;
+
+ if (unlikely(nb_pkts == 0))
+ return 0;
+
+ if (likely(nb_pkts <= AVF_RX_MAX_BURST))
+ return rx_recv_pkts(rx_queue, rx_pkts, nb_pkts);
+
+ while (nb_pkts) {
+ n = RTE_MIN(nb_pkts, AVF_RX_MAX_BURST);
+ count = rx_recv_pkts(rx_queue, &rx_pkts[nb_rx], n);
+ nb_rx = (uint16_t)(nb_rx + count);
+ nb_pkts = (uint16_t)(nb_pkts - count);
+ if (count < n)
+ break;
+ }
+
+ return nb_rx;
+}
+
+static inline int
+avf_xmit_cleanup(struct avf_tx_queue *txq)
+{
+ struct avf_tx_entry *sw_ring = txq->sw_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;
+
+ volatile struct avf_tx_desc *txd = txq->tx_ring;
+
+ desc_to_clean_to = (uint16_t)(last_desc_cleaned + txq->rs_thresh);
+ if (desc_to_clean_to >= nb_tx_desc)
+ desc_to_clean_to = (uint16_t)(desc_to_clean_to - nb_tx_desc);
+
+ 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(AVF_TXD_QW1_DTYPE_MASK)) !=
+ rte_cpu_to_le_64(AVF_TX_DESC_DTYPE_DESC_DONE)) {
+ PMD_TX_FREE_LOG(DEBUG, "TX descriptor %4u is not done "
+ "(port=%d queue=%d)", desc_to_clean_to,
+ txq->port_id, txq->queue_id);
+ return -1;
+ }
+
+ 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);
+
+ txd[desc_to_clean_to].cmd_type_offset_bsz = 0;
+
+ txq->last_desc_cleaned = desc_to_clean_to;
+ txq->nb_free = (uint16_t)(txq->nb_free + nb_tx_to_clean);
+
+ return 0;
+}
+
+/* Check if the context descriptor is needed for TX offloading */
+static inline uint16_t
+avf_calc_context_desc(uint64_t flags)
+{
+ static uint64_t mask = PKT_TX_TCP_SEG;
+
+ return (flags & mask) ? 1 : 0;
+}
+
+static inline void
+avf_txd_enable_checksum(uint64_t ol_flags,
+ uint32_t *td_cmd,
+ uint32_t *td_offset,
+ union avf_tx_offload tx_offload)
+{
+ /* Set MACLEN */
+ *td_offset |= (tx_offload.l2_len >> 1) <<
+ AVF_TX_DESC_LENGTH_MACLEN_SHIFT;
+
+ /* Enable L3 checksum offloads */
+ if (ol_flags & PKT_TX_IP_CKSUM) {
+ *td_cmd |= AVF_TX_DESC_CMD_IIPT_IPV4_CSUM;
+ *td_offset |= (tx_offload.l3_len >> 2) <<
+ AVF_TX_DESC_LENGTH_IPLEN_SHIFT;
+ } else if (ol_flags & PKT_TX_IPV4) {
+ *td_cmd |= AVF_TX_DESC_CMD_IIPT_IPV4;
+ *td_offset |= (tx_offload.l3_len >> 2) <<
+ AVF_TX_DESC_LENGTH_IPLEN_SHIFT;
+ } else if (ol_flags & PKT_TX_IPV6) {
+ *td_cmd |= AVF_TX_DESC_CMD_IIPT_IPV6;
+ *td_offset |= (tx_offload.l3_len >> 2) <<
+ AVF_TX_DESC_LENGTH_IPLEN_SHIFT;
+ }
+
+ if (ol_flags & PKT_TX_TCP_SEG) {
+ *td_cmd |= AVF_TX_DESC_CMD_L4T_EOFT_TCP;
+ *td_offset |= (tx_offload.l4_len >> 2) <<
+ AVF_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
+ return;
+ }
+
+ /* Enable L4 checksum offloads */
+ switch (ol_flags & PKT_TX_L4_MASK) {
+ case PKT_TX_TCP_CKSUM:
+ *td_cmd |= AVF_TX_DESC_CMD_L4T_EOFT_TCP;
+ *td_offset |= (sizeof(struct tcp_hdr) >> 2) <<
+ AVF_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
+ break;
+ case PKT_TX_SCTP_CKSUM:
+ *td_cmd |= AVF_TX_DESC_CMD_L4T_EOFT_SCTP;
+ *td_offset |= (sizeof(struct sctp_hdr) >> 2) <<
+ AVF_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
+ break;
+ case PKT_TX_UDP_CKSUM:
+ *td_cmd |= AVF_TX_DESC_CMD_L4T_EOFT_UDP;
+ *td_offset |= (sizeof(struct udp_hdr) >> 2) <<
+ AVF_TX_DESC_LENGTH_L4_FC_LEN_SHIFT;
+ break;
+ default:
+ break;
+ }
+}
+
+/* set TSO context descriptor
+ * support IP -> L4 and IP -> IP -> L4
+ */
+static inline uint64_t
+avf_set_tso_ctx(struct rte_mbuf *mbuf, union avf_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.l2_len +
+ tx_offload.l3_len +
+ tx_offload.l4_len;
+
+ cd_cmd = AVF_TX_CTX_DESC_TSO;
+ cd_tso_len = mbuf->pkt_len - hdr_len;
+ ctx_desc |= ((uint64_t)cd_cmd << AVF_TXD_CTX_QW1_CMD_SHIFT) |
+ ((uint64_t)cd_tso_len << AVF_TXD_CTX_QW1_TSO_LEN_SHIFT) |
+ ((uint64_t)mbuf->tso_segsz << AVF_TXD_CTX_QW1_MSS_SHIFT);
+
+ return ctx_desc;
+}
+
+/* Construct the tx flags */
+static inline uint64_t
+avf_build_ctob(uint32_t td_cmd, uint32_t td_offset, unsigned int size,
+ uint32_t td_tag)
+{
+ return rte_cpu_to_le_64(AVF_TX_DESC_DTYPE_DATA |
+ ((uint64_t)td_cmd << AVF_TXD_QW1_CMD_SHIFT) |
+ ((uint64_t)td_offset <<
+ AVF_TXD_QW1_OFFSET_SHIFT) |
+ ((uint64_t)size <<
+ AVF_TXD_QW1_TX_BUF_SZ_SHIFT) |
+ ((uint64_t)td_tag <<
+ AVF_TXD_QW1_L2TAG1_SHIFT));
+}
+
+/* TX function */
+uint16_t
+avf_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+ volatile struct avf_tx_desc *txd;
+ volatile struct avf_tx_desc *txr;
+ struct avf_tx_queue *txq;
+ struct avf_tx_entry *sw_ring;
+ struct avf_tx_entry *txe, *txn;
+ struct rte_mbuf *tx_pkt;
+ struct rte_mbuf *m_seg;
+ uint16_t tx_id;
+ uint16_t nb_tx;
+ uint32_t td_cmd;
+ uint32_t td_offset;
+ uint32_t td_tag;
+ uint64_t ol_flags;
+ uint16_t nb_used;
+ uint16_t nb_ctx;
+ uint16_t tx_last;
+ uint16_t slen;
+ uint64_t buf_dma_addr;
+ union avf_tx_offload tx_offload = {0};
+
+ txq = tx_queue;
+ sw_ring = txq->sw_ring;
+ txr = 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_free < txq->free_thresh)
+ avf_xmit_cleanup(txq);
+
+ for (nb_tx = 0; nb_tx < nb_pkts; nb_tx++) {
+ td_cmd = 0;
+ td_tag = 0;
+ td_offset = 0;
+
+ tx_pkt = *tx_pkts++;
+ RTE_MBUF_PREFETCH_TO_FREE(txe->mbuf);
+
+ ol_flags = tx_pkt->ol_flags;
+ tx_offload.l2_len = tx_pkt->l2_len;
+ tx_offload.l3_len = tx_pkt->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 = avf_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 1 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);
+
+ PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u"
+ " tx_first=%u tx_last=%u",
+ txq->port_id, txq->queue_id, tx_id, tx_last);
+
+ if (nb_used > txq->nb_free) {
+ if (avf_xmit_cleanup(txq)) {
+ if (nb_tx == 0)
+ return 0;
+ goto end_of_tx;
+ }
+ if (unlikely(nb_used > txq->rs_thresh)) {
+ while (nb_used > txq->nb_free) {
+ if (avf_xmit_cleanup(txq)) {
+ if (nb_tx == 0)
+ return 0;
+ goto end_of_tx;
+ }
+ }
+ }
+ }
+
+ /* Descriptor based VLAN insertion */
+ if (ol_flags & PKT_TX_VLAN_PKT) {
+ td_cmd |= AVF_TX_DESC_CMD_IL2TAG1;
+ td_tag = tx_pkt->vlan_tci;
+ }
+
+ /* According to datasheet, the bit2 is reserved and must be
+ * set to 1.
+ */
+ td_cmd |= 0x04;
+
+ /* Enable checksum offloading */
+ if (ol_flags & AVF_TX_CKSUM_OFFLOAD_MASK)
+ avf_txd_enable_checksum(ol_flags, &td_cmd,
+ &td_offset, tx_offload);
+
+ if (nb_ctx) {
+ /* Setup TX context descriptor if required */
+ volatile struct avf_tx_context_desc *ctx_txd =
+ (volatile struct avf_tx_context_desc *)
+ &txr[tx_id];
+ uint16_t cd_l2tag2 = 0;
+ uint64_t cd_type_cmd_tso_mss =
+ AVF_TX_DESC_DTYPE_CONTEXT;
+
+ 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;
+ }
+
+ /* TSO enabled */
+ if (ol_flags & PKT_TX_TCP_SEG)
+ cd_type_cmd_tso_mss |=
+ avf_set_tso_ctx(tx_pkt, tx_offload);
+
+ AVF_DUMP_TX_DESC(txq, ctx_txd, tx_id);
+ txe->last_id = tx_last;
+ tx_id = txe->next_id;
+ txe = txn;
+ }
+
+ m_seg = tx_pkt;
+ do {
+ txd = &txr[tx_id];
+ txn = &sw_ring[txe->next_id];
+
+ if (txe->mbuf)
+ rte_pktmbuf_free_seg(txe->mbuf);
+ txe->mbuf = m_seg;
+
+ /* Setup TX Descriptor */
+ slen = m_seg->data_len;
+ buf_dma_addr = rte_mbuf_data_iova(m_seg);
+ txd->buffer_addr = rte_cpu_to_le_64(buf_dma_addr);
+ txd->cmd_type_offset_bsz = avf_build_ctob(td_cmd,
+ td_offset,
+ slen,
+ td_tag);
+
+ AVF_DUMP_TX_DESC(txq, txd, tx_id);
+ txe->last_id = tx_last;
+ tx_id = txe->next_id;
+ txe = txn;
+ m_seg = m_seg->next;
+ } while (m_seg);
+
+ /* The last packet data descriptor needs End Of Packet (EOP) */
+ td_cmd |= AVF_TX_DESC_CMD_EOP;
+ txq->nb_used = (uint16_t)(txq->nb_used + nb_used);
+ txq->nb_free = (uint16_t)(txq->nb_free - nb_used);
+
+ if (txq->nb_used >= txq->rs_thresh) {
+ PMD_TX_LOG(DEBUG, "Setting RS bit on TXD id="
+ "%4u (port=%d queue=%d)",
+ tx_last, txq->port_id, txq->queue_id);
+
+ td_cmd |= AVF_TX_DESC_CMD_RS;
+
+ /* Update txq RS bit counters */
+ txq->nb_used = 0;
+ }
+
+ txd->cmd_type_offset_bsz |=
+ rte_cpu_to_le_64(((uint64_t)td_cmd) <<
+ AVF_TXD_QW1_CMD_SHIFT);
+ AVF_DUMP_TX_DESC(txq, txd, tx_id);
+ }
+
+end_of_tx:
+ rte_wmb();
+
+ PMD_TX_LOG(DEBUG, "port_id=%u queue_id=%u tx_tail=%u nb_tx=%u",
+ txq->port_id, txq->queue_id, tx_id, nb_tx);
+
+ AVF_PCI_REG_WRITE_RELAXED(txq->qtx_tail, tx_id);
+ txq->tx_tail = tx_id;
+
+ return nb_tx;
+}
+
+static uint16_t
+avf_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ uint16_t nb_tx = 0;
+ struct avf_tx_queue *txq = (struct avf_tx_queue *)tx_queue;
+
+ while (nb_pkts) {
+ uint16_t ret, num;
+
+ num = (uint16_t)RTE_MIN(nb_pkts, txq->rs_thresh);
+ ret = avf_xmit_fixed_burst_vec(tx_queue, &tx_pkts[nb_tx], num);
+ nb_tx += ret;
+ nb_pkts -= ret;
+ if (ret < num)
+ break;
+ }
+
+ return nb_tx;
+}
+
+/* TX prep functions */
+uint16_t
+avf_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;
+
+ /* Check condition for nb_segs > AVF_TX_MAX_MTU_SEG. */
+ if (!(ol_flags & PKT_TX_TCP_SEG)) {
+ if (m->nb_segs > AVF_TX_MAX_MTU_SEG) {
+ rte_errno = -EINVAL;
+ return i;
+ }
+ } else if ((m->tso_segsz < AVF_MIN_TSO_MSS) ||
+ (m->tso_segsz > AVF_MAX_TSO_MSS)) {
+ /* MSS outside the range are considered malicious */
+ rte_errno = -EINVAL;
+ return i;
+ }
+
+ if (ol_flags & AVF_TX_OFFLOAD_NOTSUP_MASK) {
+ rte_errno = -ENOTSUP;
+ 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;
+}
+
+/* choose rx function*/
+void
+avf_set_rx_function(struct rte_eth_dev *dev)
+{
+ struct avf_adapter *adapter =
+ AVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ struct avf_rx_queue *rxq;
+ int i;
+
+ if (adapter->rx_vec_allowed) {
+ if (dev->data->scattered_rx) {
+ PMD_DRV_LOG(DEBUG, "Using Vector Scattered Rx callback"
+ " (port=%d).", dev->data->port_id);
+ dev->rx_pkt_burst = avf_recv_scattered_pkts_vec;
+ } else {
+ PMD_DRV_LOG(DEBUG, "Using Vector Rx callback"
+ " (port=%d).", dev->data->port_id);
+ dev->rx_pkt_burst = avf_recv_pkts_vec;
+ }
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ rxq = dev->data->rx_queues[i];
+ if (!rxq)
+ continue;
+ avf_rxq_vec_setup(rxq);
+ }
+ } else if (dev->data->scattered_rx) {
+ PMD_DRV_LOG(DEBUG, "Using a Scattered Rx callback (port=%d).",
+ dev->data->port_id);
+ dev->rx_pkt_burst = avf_recv_scattered_pkts;
+ } else if (adapter->rx_bulk_alloc_allowed) {
+ PMD_DRV_LOG(DEBUG, "Using bulk Rx callback (port=%d).",
+ dev->data->port_id);
+ dev->rx_pkt_burst = avf_recv_pkts_bulk_alloc;
+ } else {
+ PMD_DRV_LOG(DEBUG, "Using Basic Rx callback (port=%d).",
+ dev->data->port_id);
+ dev->rx_pkt_burst = avf_recv_pkts;
+ }
+}
+
+/* choose tx function*/
+void
+avf_set_tx_function(struct rte_eth_dev *dev)
+{
+ struct avf_adapter *adapter =
+ AVF_DEV_PRIVATE_TO_ADAPTER(dev->data->dev_private);
+ struct avf_tx_queue *txq;
+ int i;
+
+ if (adapter->tx_vec_allowed) {
+ PMD_DRV_LOG(DEBUG, "Using Vector Tx callback (port=%d).",
+ dev->data->port_id);
+ dev->tx_pkt_burst = avf_xmit_pkts_vec;
+ dev->tx_pkt_prepare = NULL;
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ txq = dev->data->tx_queues[i];
+ if (!txq)
+ continue;
+ avf_txq_vec_setup(txq);
+ }
+ } else {
+ PMD_DRV_LOG(DEBUG, "Using Basic Tx callback (port=%d).",
+ dev->data->port_id);
+ dev->tx_pkt_burst = avf_xmit_pkts;
+ dev->tx_pkt_prepare = avf_prep_pkts;
+ }
+}
+
+void
+avf_dev_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+ struct rte_eth_rxq_info *qinfo)
+{
+ struct avf_rx_queue *rxq;
+
+ rxq = dev->data->rx_queues[queue_id];
+
+ qinfo->mp = rxq->mp;
+ qinfo->scattered_rx = dev->data->scattered_rx;
+ qinfo->nb_desc = rxq->nb_rx_desc;
+
+ qinfo->conf.rx_free_thresh = rxq->rx_free_thresh;
+ qinfo->conf.rx_drop_en = TRUE;
+ qinfo->conf.rx_deferred_start = rxq->rx_deferred_start;
+}
+
+void
+avf_dev_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+ struct rte_eth_txq_info *qinfo)
+{
+ struct avf_tx_queue *txq;
+
+ txq = dev->data->tx_queues[queue_id];
+
+ qinfo->nb_desc = txq->nb_tx_desc;
+
+ qinfo->conf.tx_free_thresh = txq->free_thresh;
+ qinfo->conf.tx_rs_thresh = txq->rs_thresh;
+ qinfo->conf.offloads = txq->offloads;
+ qinfo->conf.tx_deferred_start = txq->tx_deferred_start;
+}
+
+/* Get the number of used descriptors of a rx queue */
+uint32_t
+avf_dev_rxq_count(struct rte_eth_dev *dev, uint16_t queue_id)
+{
+#define AVF_RXQ_SCAN_INTERVAL 4
+ volatile union avf_rx_desc *rxdp;
+ struct avf_rx_queue *rxq;
+ uint16_t desc = 0;
+
+ rxq = dev->data->rx_queues[queue_id];
+ rxdp = &rxq->rx_ring[rxq->rx_tail];
+ while ((desc < rxq->nb_rx_desc) &&
+ ((rte_le_to_cpu_64(rxdp->wb.qword1.status_error_len) &
+ AVF_RXD_QW1_STATUS_MASK) >> AVF_RXD_QW1_STATUS_SHIFT) &
+ (1 << AVF_RX_DESC_STATUS_DD_SHIFT)) {
+ /* Check the DD bit of a rx descriptor of each 4 in a group,
+ * to avoid checking too frequently and downgrading performance
+ * too much.
+ */
+ desc += AVF_RXQ_SCAN_INTERVAL;
+ rxdp += AVF_RXQ_SCAN_INTERVAL;
+ if (rxq->rx_tail + desc >= rxq->nb_rx_desc)
+ rxdp = &(rxq->rx_ring[rxq->rx_tail +
+ desc - rxq->nb_rx_desc]);
+ }
+
+ return desc;
+}
+
+int
+avf_dev_rx_desc_status(void *rx_queue, uint16_t offset)
+{
+ struct avf_rx_queue *rxq = rx_queue;
+ volatile uint64_t *status;
+ uint64_t mask;
+ uint32_t desc;
+
+ if (unlikely(offset >= rxq->nb_rx_desc))
+ return -EINVAL;
+
+ if (offset >= rxq->nb_rx_desc - rxq->nb_rx_hold)
+ return RTE_ETH_RX_DESC_UNAVAIL;
+
+ desc = rxq->rx_tail + offset;
+ if (desc >= rxq->nb_rx_desc)
+ desc -= rxq->nb_rx_desc;
+
+ status = &rxq->rx_ring[desc].wb.qword1.status_error_len;
+ mask = rte_le_to_cpu_64((1ULL << AVF_RX_DESC_STATUS_DD_SHIFT)
+ << AVF_RXD_QW1_STATUS_SHIFT);
+ if (*status & mask)
+ return RTE_ETH_RX_DESC_DONE;
+
+ return RTE_ETH_RX_DESC_AVAIL;
+}
+
+int
+avf_dev_tx_desc_status(void *tx_queue, uint16_t offset)
+{
+ struct avf_tx_queue *txq = tx_queue;
+ volatile uint64_t *status;
+ uint64_t mask, expect;
+ uint32_t desc;
+
+ if (unlikely(offset >= txq->nb_tx_desc))
+ return -EINVAL;
+
+ desc = txq->tx_tail + offset;
+ /* go to next desc that has the RS bit */
+ desc = ((desc + txq->rs_thresh - 1) / txq->rs_thresh) *
+ txq->rs_thresh;
+ if (desc >= txq->nb_tx_desc) {
+ desc -= txq->nb_tx_desc;
+ if (desc >= txq->nb_tx_desc)
+ desc -= txq->nb_tx_desc;
+ }
+
+ status = &txq->tx_ring[desc].cmd_type_offset_bsz;
+ mask = rte_le_to_cpu_64(AVF_TXD_QW1_DTYPE_MASK);
+ expect = rte_cpu_to_le_64(
+ AVF_TX_DESC_DTYPE_DESC_DONE << AVF_TXD_QW1_DTYPE_SHIFT);
+ if ((*status & mask) == expect)
+ return RTE_ETH_TX_DESC_DONE;
+
+ return RTE_ETH_TX_DESC_FULL;
+}
+
+uint16_t __attribute__((weak))
+avf_recv_pkts_vec(__rte_unused void *rx_queue,
+ __rte_unused struct rte_mbuf **rx_pkts,
+ __rte_unused uint16_t nb_pkts)
+{
+ return 0;
+}
+
+uint16_t __attribute__((weak))
+avf_recv_scattered_pkts_vec(__rte_unused void *rx_queue,
+ __rte_unused struct rte_mbuf **rx_pkts,
+ __rte_unused uint16_t nb_pkts)
+{
+ return 0;
+}
+
+uint16_t __attribute__((weak))
+avf_xmit_fixed_burst_vec(__rte_unused void *tx_queue,
+ __rte_unused struct rte_mbuf **tx_pkts,
+ __rte_unused uint16_t nb_pkts)
+{
+ return 0;
+}
+
+int __attribute__((weak))
+avf_rxq_vec_setup(__rte_unused struct avf_rx_queue *rxq)
+{
+ return -1;
+}
+
+int __attribute__((weak))
+avf_txq_vec_setup(__rte_unused struct avf_tx_queue *txq)
+{
+ return -1;
+}
git.droids-corp.org / dpdk.git / blobdiff