#include <rte_sctp.h>
#include <rte_string_fns.h>
#include <rte_errno.h>
+#include <rte_ip.h>
#include "ixgbe_logs.h"
#include "ixgbe/ixgbe_api.h"
}
}
+/**
+ * ixgbe_recv_pkts_lro - receive handler for and LRO case.
+ *
+ * @rx_queue Rx queue handle
+ * @rx_pkts table of received packets
+ * @nb_pkts size of rx_pkts table
+ * @bulk_alloc if TRUE bulk allocation is used for a HW ring refilling
+ *
+ * Handles the Rx HW ring completions when RSC feature is configured. Uses an
+ * additional ring of ixgbe_rsc_entry's that will hold the relevant RSC info.
+ *
+ * We use the same logic as in Linux and in FreeBSD ixgbe drivers:
+ * 1) When non-EOP RSC completion arrives:
+ * a) Update the HEAD of the current RSC aggregation cluster with the new
+ * segment's data length.
+ * b) Set the "next" pointer of the current segment to point to the segment
+ * at the NEXTP index.
+ * c) Pass the HEAD of RSC aggregation cluster on to the next NEXTP entry
+ * in the sw_rsc_ring.
+ * 2) When EOP arrives we just update the cluster's total length and offload
+ * flags and deliver the cluster up to the upper layers. In our case - put it
+ * in the rx_pkts table.
+ *
+ * Returns the number of received packets/clusters (according to the "bulk
+ * receive" interface).
+ */
+static inline uint16_t
+ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts,
+ bool bulk_alloc)
+{
+ struct ixgbe_rx_queue *rxq = rx_queue;
+ volatile union ixgbe_adv_rx_desc *rx_ring = rxq->rx_ring;
+ struct ixgbe_rx_entry *sw_ring = rxq->sw_ring;
+ struct ixgbe_rsc_entry *sw_rsc_ring = rxq->sw_rsc_ring;
+ uint16_t rx_id = rxq->rx_tail;
+ uint16_t nb_rx = 0;
+ uint16_t nb_hold = rxq->nb_rx_hold;
+ uint16_t prev_id = rxq->rx_tail;
+
+ while (nb_rx < nb_pkts) {
+ bool eop;
+ struct ixgbe_rx_entry *rxe;
+ struct ixgbe_rsc_entry *rsc_entry;
+ struct ixgbe_rsc_entry *next_rsc_entry;
+ struct ixgbe_rx_entry *next_rxe;
+ struct rte_mbuf *first_seg;
+ struct rte_mbuf *rxm;
+ struct rte_mbuf *nmb;
+ union ixgbe_adv_rx_desc rxd;
+ uint16_t data_len;
+ uint16_t next_id;
+ volatile union ixgbe_adv_rx_desc *rxdp;
+ uint32_t staterr;
+
+next_desc:
+ /*
+ * The code in this whole file uses the volatile pointer to
+ * ensure the read ordering of the status and the rest of the
+ * descriptor fields (on the compiler level only!!!). This is so
+ * UGLY - why not to just use the compiler barrier instead? DPDK
+ * even has the rte_compiler_barrier() for that.
+ *
+ * But most importantly this is just wrong because this doesn't
+ * ensure memory ordering in a general case at all. For
+ * instance, DPDK is supposed to work on Power CPUs where
+ * compiler barrier may just not be enough!
+ *
+ * I tried to write only this function properly to have a
+ * starting point (as a part of an LRO/RSC series) but the
+ * compiler cursed at me when I tried to cast away the
+ * "volatile" from rx_ring (yes, it's volatile too!!!). So, I'm
+ * keeping it the way it is for now.
+ *
+ * The code in this file is broken in so many other places and
+ * will just not work on a big endian CPU anyway therefore the
+ * lines below will have to be revisited together with the rest
+ * of the ixgbe PMD.
+ *
+ * TODO:
+ * - Get rid of "volatile" crap and let the compiler do its
+ * job.
+ * - Use the proper memory barrier (rte_rmb()) to ensure the
+ * memory ordering below.
+ */
+ rxdp = &rx_ring[rx_id];
+ staterr = rte_le_to_cpu_32(rxdp->wb.upper.status_error);
+
+ if (!(staterr & IXGBE_RXDADV_STAT_DD))
+ break;
+
+ rxd = *rxdp;
+
+ PMD_RX_LOG(DEBUG, "port_id=%u queue_id=%u rx_id=%u "
+ "staterr=0x%x data_len=%u",
+ rxq->port_id, rxq->queue_id, rx_id, staterr,
+ rte_le_to_cpu_16(rxd.wb.upper.length));
+
+ if (!bulk_alloc) {
+ nmb = rte_rxmbuf_alloc(rxq->mb_pool);
+ if (nmb == NULL) {
+ PMD_RX_LOG(DEBUG, "RX mbuf alloc failed "
+ "port_id=%u queue_id=%u",
+ rxq->port_id, rxq->queue_id);
+
+ rte_eth_devices[rxq->port_id].data->
+ rx_mbuf_alloc_failed++;
+ break;
+ }
+ } else if (nb_hold > rxq->rx_free_thresh) {
+ uint16_t next_rdt = rxq->rx_free_trigger;
+
+ if (!ixgbe_rx_alloc_bufs(rxq, false)) {
+ rte_wmb();
+ IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr,
+ next_rdt);
+ nb_hold -= rxq->rx_free_thresh;
+ } else {
+ PMD_RX_LOG(DEBUG, "RX bulk alloc failed "
+ "port_id=%u queue_id=%u",
+ rxq->port_id, rxq->queue_id);
+
+ rte_eth_devices[rxq->port_id].data->
+ rx_mbuf_alloc_failed++;
+ break;
+ }
+ }
+
+ nb_hold++;
+ rxe = &sw_ring[rx_id];
+ eop = staterr & IXGBE_RXDADV_STAT_EOP;
+
+ next_id = rx_id + 1;
+ if (next_id == rxq->nb_rx_desc)
+ next_id = 0;
+
+ /* Prefetch next mbuf while processing current one. */
+ rte_ixgbe_prefetch(sw_ring[next_id].mbuf);
+
+ /*
+ * When next RX descriptor is on a cache-line boundary,
+ * prefetch the next 4 RX descriptors and the next 4 pointers
+ * to mbufs.
+ */
+ if ((next_id & 0x3) == 0) {
+ rte_ixgbe_prefetch(&rx_ring[next_id]);
+ rte_ixgbe_prefetch(&sw_ring[next_id]);
+ }
+
+ rxm = rxe->mbuf;
+
+ if (!bulk_alloc) {
+ __le64 dma =
+ rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR_DEFAULT(nmb));
+ /*
+ * Update RX descriptor with the physical address of the
+ * new data buffer of the new allocated mbuf.
+ */
+ rxe->mbuf = nmb;
+
+ rxm->data_off = RTE_PKTMBUF_HEADROOM;
+ rxdp->read.hdr_addr = dma;
+ rxdp->read.pkt_addr = dma;
+ } else
+ rxe->mbuf = NULL;
+
+ /*
+ * Set data length & data buffer address of mbuf.
+ */
+ data_len = rte_le_to_cpu_16(rxd.wb.upper.length);
+ rxm->data_len = data_len;
+
+ if (!eop) {
+ uint16_t nextp_id;
+ /*
+ * Get next descriptor index:
+ * - For RSC it's in the NEXTP field.
+ * - For a scattered packet - it's just a following
+ * descriptor.
+ */
+ if (ixgbe_rsc_count(&rxd))
+ nextp_id =
+ (staterr & IXGBE_RXDADV_NEXTP_MASK) >>
+ IXGBE_RXDADV_NEXTP_SHIFT;
+ else
+ nextp_id = next_id;
+
+ next_rsc_entry = &sw_rsc_ring[nextp_id];
+ next_rxe = &sw_ring[nextp_id];
+ rte_ixgbe_prefetch(next_rxe);
+ }
+
+ rsc_entry = &sw_rsc_ring[rx_id];
+ first_seg = rsc_entry->fbuf;
+ rsc_entry->fbuf = NULL;
+
+ /*
+ * 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 == NULL) {
+ first_seg = rxm;
+ first_seg->pkt_len = data_len;
+ first_seg->nb_segs = 1;
+ } else {
+ first_seg->pkt_len += data_len;
+ first_seg->nb_segs++;
+ }
+
+ prev_id = rx_id;
+ rx_id = next_id;
+
+ /*
+ * If this is not the last buffer of the received packet, update
+ * the pointer to the first mbuf at the NEXTP entry in the
+ * sw_rsc_ring and continue to parse the RX ring.
+ */
+ if (!eop) {
+ rxm->next = next_rxe->mbuf;
+ next_rsc_entry->fbuf = first_seg;
+ goto next_desc;
+ }
+
+ /*
+ * This is the last buffer of the received packet - return
+ * the current cluster to the user.
+ */
+ rxm->next = NULL;
+
+ /* Initialize the first mbuf of the returned packet */
+ ixgbe_fill_cluster_head_buf(first_seg, &rxd, rxq->port_id,
+ staterr);
+
+ /* Prefetch data of first segment, if configured to do so. */
+ rte_packet_prefetch((char *)first_seg->buf_addr +
+ first_seg->data_off);
+
+ /*
+ * Store the mbuf address into the next entry of the array
+ * of returned packets.
+ */
+ rx_pkts[nb_rx++] = first_seg;
+ }
+
+ /*
+ * Record index of the next RX descriptor to probe.
+ */
+ 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 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...
+ */
+ if (!bulk_alloc && 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);
+
+ rte_wmb();
+ IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, prev_id);
+ nb_hold = 0;
+ }
+
+ rxq->nb_rx_hold = nb_hold;
+ return nb_rx;
+}
+
+uint16_t
+ixgbe_recv_pkts_lro_single_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, false);
+}
+
+uint16_t
+ixgbe_recv_pkts_lro_bulk_alloc(void *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ return ixgbe_recv_pkts_lro(rx_queue, rx_pkts, nb_pkts, true);
+}
+
uint16_t
ixgbe_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts)
return (0);
}
+/**
+ * ixgbe_free_rsc_cluster - free the not-yet-completed RSC cluster
+ *
+ * The "next" pointer of the last segment of (not-yet-completed) RSC clusters
+ * in the sw_rsc_ring is not set to NULL but rather points to the next
+ * mbuf of this RSC aggregation (that has not been completed yet and still
+ * resides on the HW ring). So, instead of calling for rte_pktmbuf_free() we
+ * will just free first "nb_segs" segments of the cluster explicitly by calling
+ * an rte_pktmbuf_free_seg().
+ *
+ * @m RSC cluster head
+ */
+static void
+ixgbe_free_rsc_cluster(struct rte_mbuf *m)
+{
+ uint8_t i, nb_segs = m->nb_segs;
+ struct rte_mbuf *next_seg;
+
+ for (i = 0; i < nb_segs; i++) {
+ next_seg = m->next;
+ rte_pktmbuf_free_seg(m);
+ m = next_seg;
+ }
+}
+
static void
ixgbe_rx_queue_release_mbufs(struct ixgbe_rx_queue *rxq)
{
}
#endif
}
+
+ if (rxq->sw_rsc_ring)
+ for (i = 0; i < rxq->nb_rx_desc; i++)
+ if (rxq->sw_rsc_ring[i].fbuf) {
+ ixgbe_free_rsc_cluster(rxq->sw_rsc_ring[i].fbuf);
+ rxq->sw_rsc_ring[i].fbuf = NULL;
+ }
}
static void
if (rxq != NULL) {
ixgbe_rx_queue_release_mbufs(rxq);
rte_free(rxq->sw_ring);
+ rte_free(rxq->sw_rsc_ring);
rte_free(rxq);
}
}
rxq->nb_rx_hold = 0;
rxq->pkt_first_seg = NULL;
rxq->pkt_last_seg = NULL;
+ rxq->rsc_en = 0;
}
int
struct ixgbe_rx_queue *rxq;
struct ixgbe_hw *hw;
uint16_t len;
+ struct rte_eth_dev_info dev_info = { 0 };
+ struct rte_eth_rxmode *dev_rx_mode = &dev->data->dev_conf.rxmode;
+ bool rsc_requested = false;
+
+ dev->dev_ops->dev_infos_get(dev, &dev_info);
+ if ((dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO) &&
+ dev_rx_mode->enable_lro)
+ rsc_requested = true;
PMD_INIT_FUNC_TRACE();
hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring",
sizeof(struct ixgbe_rx_entry) * len,
RTE_CACHE_LINE_SIZE, socket_id);
- if (rxq->sw_ring == NULL) {
+ if (!rxq->sw_ring) {
ixgbe_rx_queue_release(rxq);
return (-ENOMEM);
}
- PMD_INIT_LOG(DEBUG, "sw_ring=%p hw_ring=%p dma_addr=0x%"PRIx64,
- rxq->sw_ring, rxq->rx_ring, rxq->rx_ring_phys_addr);
+
+ if (rsc_requested) {
+ rxq->sw_rsc_ring =
+ rte_zmalloc_socket("rxq->sw_rsc_ring",
+ sizeof(struct ixgbe_rsc_entry) * len,
+ RTE_CACHE_LINE_SIZE, socket_id);
+ if (!rxq->sw_rsc_ring) {
+ ixgbe_rx_queue_release(rxq);
+ return (-ENOMEM);
+ }
+ } else
+ rxq->sw_rsc_ring = NULL;
+
+ PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_rsc_ring=%p hw_ring=%p "
+ "dma_addr=0x%"PRIx64,
+ rxq->sw_ring, rxq->sw_rsc_ring, rxq->rx_ring,
+ rxq->rx_ring_phys_addr);
if (!rte_is_power_of_2(nb_desc)) {
PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Vector Rx "
return 0;
}
+/**
+ * ixgbe_get_rscctl_maxdesc - Calculate the RSCCTL[n].MAXDESC for PF
+ *
+ * Return the RSCCTL[n].MAXDESC for 82599 and x540 PF devices according to the
+ * spec rev. 3.0 chapter 8.2.3.8.13.
+ *
+ * @pool Memory pool of the Rx queue
+ */
+static inline uint32_t
+ixgbe_get_rscctl_maxdesc(struct rte_mempool *pool)
+{
+ struct rte_pktmbuf_pool_private *mp_priv = rte_mempool_get_priv(pool);
+
+ /* MAXDESC * SRRCTL.BSIZEPKT must not exceed 64 KB minus one */
+ uint16_t maxdesc =
+ IPV4_MAX_PKT_LEN /
+ (mp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM);
+
+ if (maxdesc >= 16)
+ return IXGBE_RSCCTL_MAXDESC_16;
+ else if (maxdesc >= 8)
+ return IXGBE_RSCCTL_MAXDESC_8;
+ else if (maxdesc >= 4)
+ return IXGBE_RSCCTL_MAXDESC_4;
+ else
+ return IXGBE_RSCCTL_MAXDESC_1;
+}
+
+/**
+ * ixgbe_set_ivar - Setup the correct IVAR register for a particular MSIX
+ * interrupt
+ *
+ * (Taken from FreeBSD tree)
+ * (yes this is all very magic and confusing :)
+ *
+ * @dev port handle
+ * @entry the register array entry
+ * @vector the MSIX vector for this queue
+ * @type RX/TX/MISC
+ */
+static void
+ixgbe_set_ivar(struct rte_eth_dev *dev, u8 entry, u8 vector, s8 type)
+{
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ u32 ivar, index;
+
+ vector |= IXGBE_IVAR_ALLOC_VAL;
+
+ switch (hw->mac.type) {
+
+ case ixgbe_mac_82598EB:
+ if (type == -1)
+ entry = IXGBE_IVAR_OTHER_CAUSES_INDEX;
+ else
+ entry += (type * 64);
+ index = (entry >> 2) & 0x1F;
+ ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
+ ivar &= ~(0xFF << (8 * (entry & 0x3)));
+ ivar |= (vector << (8 * (entry & 0x3)));
+ IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
+ break;
+
+ case ixgbe_mac_82599EB:
+ case ixgbe_mac_X540:
+ if (type == -1) { /* MISC IVAR */
+ index = (entry & 1) * 8;
+ ivar = IXGBE_READ_REG(hw, IXGBE_IVAR_MISC);
+ ivar &= ~(0xFF << index);
+ ivar |= (vector << index);
+ IXGBE_WRITE_REG(hw, IXGBE_IVAR_MISC, ivar);
+ } else { /* RX/TX IVARS */
+ index = (16 * (entry & 1)) + (8 * type);
+ ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(entry >> 1));
+ ivar &= ~(0xFF << index);
+ ivar |= (vector << index);
+ IXGBE_WRITE_REG(hw, IXGBE_IVAR(entry >> 1), ivar);
+ }
+
+ break;
+
+ default:
+ break;
+ }
+}
+
void ixgbe_set_rx_function(struct rte_eth_dev *dev)
{
struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
hw->rx_vec_allowed = false;
}
- if (dev->data->scattered_rx) {
+ /*
+ * Initialize the appropriate LRO callback.
+ *
+ * If all queues satisfy the bulk allocation preconditions
+ * (hw->rx_bulk_alloc_allowed is TRUE) then we may use bulk allocation.
+ * Otherwise use a single allocation version.
+ */
+ if (dev->data->lro) {
+ if (hw->rx_bulk_alloc_allowed) {
+ PMD_INIT_LOG(INFO, "LRO is requested. Using a bulk "
+ "allocation version");
+ dev->rx_pkt_burst = ixgbe_recv_pkts_lro_bulk_alloc;
+ } else {
+ PMD_INIT_LOG(INFO, "LRO is requested. Using a single "
+ "allocation version");
+ dev->rx_pkt_burst = ixgbe_recv_pkts_lro_single_alloc;
+ }
+ } else if (dev->data->scattered_rx) {
/*
* Set the non-LRO scattered callback: there are Vector and
* single allocation versions.
}
}
+/**
+ * ixgbe_set_rsc - configure RSC related port HW registers
+ *
+ * Configures the port's RSC related registers according to the 4.6.7.2 chapter
+ * of 82599 Spec (x540 configuration is virtually the same).
+ *
+ * @dev port handle
+ *
+ * Returns 0 in case of success or a non-zero error code
+ */
+static int
+ixgbe_set_rsc(struct rte_eth_dev *dev)
+{
+ struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
+ struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+ struct rte_eth_dev_info dev_info = { 0 };
+ bool rsc_capable = false;
+ uint16_t i;
+ uint32_t rdrxctl;
+
+ /* Sanity check */
+ dev->dev_ops->dev_infos_get(dev, &dev_info);
+ if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_LRO)
+ rsc_capable = true;
+
+ if (!rsc_capable && rx_conf->enable_lro) {
+ PMD_INIT_LOG(CRIT, "LRO is requested on HW that doesn't "
+ "support it");
+ return -EINVAL;
+ }
+
+ /* RSC global configuration (chapter 4.6.7.2.1 of 82599 Spec) */
+
+ if (!rx_conf->hw_strip_crc && rx_conf->enable_lro) {
+ /*
+ * According to chapter of 4.6.7.2.1 of the Spec Rev.
+ * 3.0 RSC configuration requires HW CRC stripping being
+ * enabled. If user requested both HW CRC stripping off
+ * and RSC on - return an error.
+ */
+ PMD_INIT_LOG(CRIT, "LRO can't be enabled when HW CRC "
+ "is disabled");
+ return -EINVAL;
+ }
+
+ /* RFCTL configuration */
+ if (rsc_capable) {
+ uint32_t rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
+ if (rx_conf->enable_lro)
+ /*
+ * Since NFS packets coalescing is not supported - clear
+ * RFCTL.NFSW_DIS and RFCTL.NFSR_DIS when RSC is
+ * enabled.
+ */
+ rfctl &= ~(IXGBE_RFCTL_RSC_DIS | IXGBE_RFCTL_NFSW_DIS |
+ IXGBE_RFCTL_NFSR_DIS);
+ else
+ rfctl |= IXGBE_RFCTL_RSC_DIS;
+
+ IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
+ }
+
+ /* If LRO hasn't been requested - we are done here. */
+ if (!rx_conf->enable_lro)
+ return 0;
+
+ /* Set RDRXCTL.RSCACKC bit */
+ rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
+ rdrxctl |= IXGBE_RDRXCTL_RSCACKC;
+ IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
+
+ /* Per-queue RSC configuration (chapter 4.6.7.2.2 of 82599 Spec) */
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ struct ixgbe_rx_queue *rxq = dev->data->rx_queues[i];
+ uint32_t srrctl =
+ IXGBE_READ_REG(hw, IXGBE_SRRCTL(rxq->reg_idx));
+ uint32_t rscctl =
+ IXGBE_READ_REG(hw, IXGBE_RSCCTL(rxq->reg_idx));
+ uint32_t psrtype =
+ IXGBE_READ_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx));
+ uint32_t eitr =
+ IXGBE_READ_REG(hw, IXGBE_EITR(rxq->reg_idx));
+
+ /*
+ * ixgbe PMD doesn't support header-split at the moment.
+ *
+ * Following the 4.6.7.2.1 chapter of the 82599/x540
+ * Spec if RSC is enabled the SRRCTL[n].BSIZEHEADER
+ * should be configured even if header split is not
+ * enabled. We will configure it 128 bytes following the
+ * recommendation in the spec.
+ */
+ srrctl &= ~IXGBE_SRRCTL_BSIZEHDR_MASK;
+ srrctl |= (128 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT) &
+ IXGBE_SRRCTL_BSIZEHDR_MASK;
+
+ /*
+ * TODO: Consider setting the Receive Descriptor Minimum
+ * Threshold Size for an RSC case. This is not an obviously
+ * beneficiary option but the one worth considering...
+ */
+
+ rscctl |= IXGBE_RSCCTL_RSCEN;
+ rscctl |= ixgbe_get_rscctl_maxdesc(rxq->mb_pool);
+ psrtype |= IXGBE_PSRTYPE_TCPHDR;
+
+ /*
+ * RSC: Set ITR interval corresponding to 2K ints/s.
+ *
+ * Full-sized RSC aggregations for a 10Gb/s link will
+ * arrive at about 20K aggregation/s rate.
+ *
+ * 2K inst/s rate will make only 10% of the
+ * aggregations to be closed due to the interrupt timer
+ * expiration for a streaming at wire-speed case.
+ *
+ * For a sparse streaming case this setting will yield
+ * at most 500us latency for a single RSC aggregation.
+ */
+ eitr &= ~IXGBE_EITR_ITR_INT_MASK;
+ eitr |= IXGBE_EITR_INTERVAL_US(500) | IXGBE_EITR_CNT_WDIS;
+
+ IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
+ IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(rxq->reg_idx), rscctl);
+ IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(rxq->reg_idx), psrtype);
+ IXGBE_WRITE_REG(hw, IXGBE_EITR(rxq->reg_idx), eitr);
+
+ /*
+ * RSC requires the mapping of the queue to the
+ * interrupt vector.
+ */
+ ixgbe_set_ivar(dev, rxq->reg_idx, i, 0);
+
+ rxq->rsc_en = 1;
+ }
+
+ dev->data->lro = 1;
+
+ PMD_INIT_LOG(INFO, "enabling LRO mode");
+
+ return 0;
+}
+
/*
* Initializes Receive Unit.
*/
uint16_t buf_size;
uint16_t i;
struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
+ int rc;
PMD_INIT_FUNC_TRACE();
hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
RTE_PKTMBUF_HEADROOM);
srrctl |= ((buf_size >> IXGBE_SRRCTL_BSIZEPKT_SHIFT) &
IXGBE_SRRCTL_BSIZEPKT_MASK);
+
IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(rxq->reg_idx), srrctl);
buf_size = (uint16_t) ((srrctl & IXGBE_SRRCTL_BSIZEPKT_MASK) <<
if (rx_conf->enable_scatter)
dev->data->scattered_rx = 1;
- ixgbe_set_rx_function(dev);
-
/*
* Device configured with multiple RX queues.
*/
IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
}
+ rc = ixgbe_set_rsc(dev);
+ if (rc)
+ return rc;
+
+ ixgbe_set_rx_function(dev);
+
return 0;
}
git.droids-corp.org / dpdk.git / commitdiff