#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
-#include <rte_ring.h>
#include <rte_mempool.h>
#include <rte_malloc.h>
#include <rte_mbuf.h>
static void vmxnet3_txq_dump(struct vmxnet3_tx_queue *);
#endif
-static struct rte_mbuf *
-rte_rxmbuf_alloc(struct rte_mempool *mp)
-{
- struct rte_mbuf *m;
-
- m = __rte_mbuf_raw_alloc(mp);
- __rte_mbuf_sanity_check_raw(m, 0);
- return m;
-}
-
#ifdef RTE_LIBRTE_VMXNET3_DEBUG_DRIVER_NOT_USED
static void
vmxnet3_rxq_dump(struct vmxnet3_rx_queue *rxq)
return;
PMD_RX_LOG(DEBUG,
- "RXQ: cmd0 base : 0x%p cmd1 base : 0x%p comp ring base : 0x%p.",
+ "RXQ: cmd0 base : %p cmd1 base : %p comp ring base : %p.",
rxq->cmd_ring[0].base, rxq->cmd_ring[1].base, rxq->comp_ring.base);
PMD_RX_LOG(DEBUG,
"RXQ: cmd0 basePA : 0x%lx cmd1 basePA : 0x%lx comp ring basePA : 0x%lx.",
if (txq == NULL)
return;
- PMD_TX_LOG(DEBUG, "TXQ: cmd base : 0x%p comp ring base : 0x%p data ring base : 0x%p.",
+ PMD_TX_LOG(DEBUG, "TXQ: cmd base : %p comp ring base : %p data ring base : %p.",
txq->cmd_ring.base, txq->comp_ring.base, txq->data_ring.base);
PMD_TX_LOG(DEBUG, "TXQ: cmd basePA : 0x%lx comp ring basePA : 0x%lx data ring basePA : 0x%lx.",
(unsigned long)txq->cmd_ring.basePA,
}
}
+static int
+vmxnet3_unmap_pkt(uint16_t eop_idx, vmxnet3_tx_queue_t *txq)
+{
+ int completed = 0;
+ struct rte_mbuf *mbuf;
+
+ /* Release cmd_ring descriptor and free mbuf */
+ RTE_ASSERT(txq->cmd_ring.base[eop_idx].txd.eop == 1);
+
+ mbuf = txq->cmd_ring.buf_info[eop_idx].m;
+ if (mbuf == NULL)
+ rte_panic("EOP desc does not point to a valid mbuf");
+ rte_pktmbuf_free(mbuf);
+
+ txq->cmd_ring.buf_info[eop_idx].m = NULL;
+
+ while (txq->cmd_ring.next2comp != eop_idx) {
+ /* no out-of-order completion */
+ RTE_ASSERT(txq->cmd_ring.base[txq->cmd_ring.next2comp].txd.cq == 0);
+ vmxnet3_cmd_ring_adv_next2comp(&txq->cmd_ring);
+ completed++;
+ }
+
+ /* Mark the txd for which tcd was generated as completed */
+ vmxnet3_cmd_ring_adv_next2comp(&txq->cmd_ring);
+
+ return completed + 1;
+}
+
static void
vmxnet3_tq_tx_complete(vmxnet3_tx_queue_t *txq)
{
int completed = 0;
- struct rte_mbuf *mbuf;
vmxnet3_comp_ring_t *comp_ring = &txq->comp_ring;
struct Vmxnet3_TxCompDesc *tcd = (struct Vmxnet3_TxCompDesc *)
(comp_ring->base + comp_ring->next2proc);
while (tcd->gen == comp_ring->gen) {
- /* Release cmd_ring descriptor and free mbuf */
- VMXNET3_ASSERT(txq->cmd_ring.base[tcd->txdIdx].txd.eop == 1);
- while (txq->cmd_ring.next2comp != tcd->txdIdx) {
- mbuf = txq->cmd_ring.buf_info[txq->cmd_ring.next2comp].m;
- txq->cmd_ring.buf_info[txq->cmd_ring.next2comp].m = NULL;
- rte_pktmbuf_free_seg(mbuf);
-
- /* Mark the txd for which tcd was generated as completed */
- vmxnet3_cmd_ring_adv_next2comp(&txq->cmd_ring);
- completed++;
- }
+ completed += vmxnet3_unmap_pkt(tcd->txdIdx, txq);
vmxnet3_comp_ring_adv_next2proc(comp_ring);
tcd = (struct Vmxnet3_TxCompDesc *)(comp_ring->base +
struct rte_mbuf *txm = tx_pkts[nb_tx];
struct rte_mbuf *m_seg = txm;
int copy_size = 0;
+ bool tso = (txm->ol_flags & PKT_TX_TCP_SEG) != 0;
+ /* # of descriptors needed for a packet. */
+ unsigned count = txm->nb_segs;
+
+ avail = vmxnet3_cmd_ring_desc_avail(&txq->cmd_ring);
+ if (count > avail) {
+ /* Is command ring full? */
+ if (unlikely(avail == 0)) {
+ PMD_TX_LOG(DEBUG, "No free ring descriptors");
+ txq->stats.tx_ring_full++;
+ txq->stats.drop_total += (nb_pkts - nb_tx);
+ break;
+ }
- /* Is this packet execessively fragmented, then drop */
- if (unlikely(txm->nb_segs > VMXNET3_MAX_TXD_PER_PKT)) {
- ++txq->stats.drop_too_many_segs;
- ++txq->stats.drop_total;
+ /* Command ring is not full but cannot handle the
+ * multi-segmented packet. Let's try the next packet
+ * in this case.
+ */
+ PMD_TX_LOG(DEBUG, "Running out of ring descriptors "
+ "(avail %d needed %d)", avail, count);
+ txq->stats.drop_total++;
+ if (tso)
+ txq->stats.drop_tso++;
rte_pktmbuf_free(txm);
- ++nb_tx;
+ nb_tx++;
continue;
}
- /* Is command ring full? */
- avail = vmxnet3_cmd_ring_desc_avail(&txq->cmd_ring);
- if (txm->nb_segs > avail) {
- ++txq->stats.tx_ring_full;
- break;
+ /* Drop non-TSO packet that is excessively fragmented */
+ if (unlikely(!tso && count > VMXNET3_MAX_TXD_PER_PKT)) {
+ PMD_TX_LOG(ERR, "Non-TSO packet cannot occupy more than %d tx "
+ "descriptors. Packet dropped.", VMXNET3_MAX_TXD_PER_PKT);
+ txq->stats.drop_too_many_segs++;
+ txq->stats.drop_total++;
+ rte_pktmbuf_free(txm);
+ nb_tx++;
+ continue;
}
if (txm->nb_segs == 1 && rte_pktmbuf_pkt_len(txm) <= VMXNET3_HDR_COPY_SIZE) {
do {
/* Remember the transmit buffer for cleanup */
tbi = txq->cmd_ring.buf_info + txq->cmd_ring.next2fill;
- tbi->m = m_seg;
/* NB: the following assumes that VMXNET3 maximum
- transmit buffer size (16K) is greater than
- maximum sizeof mbuf segment size. */
+ * transmit buffer size (16K) is greater than
+ * maximum size of mbuf segment size.
+ */
gdesc = txq->cmd_ring.base + txq->cmd_ring.next2fill;
if (copy_size)
gdesc->txd.addr = rte_cpu_to_le_64(txq->data_ring.basePA +
dw2 = txq->cmd_ring.gen << VMXNET3_TXD_GEN_SHIFT;
} while ((m_seg = m_seg->next) != NULL);
+ /* set the last buf_info for the pkt */
+ tbi->m = txm;
/* Update the EOP descriptor */
gdesc->dword[3] |= VMXNET3_TXD_EOP | VMXNET3_TXD_CQ;
gdesc->txd.tci = txm->vlan_tci;
}
- if (txm->ol_flags & PKT_TX_L4_MASK) {
+ if (tso) {
+ uint16_t mss = txm->tso_segsz;
+
+ RTE_ASSERT(mss > 0);
+
+ gdesc->txd.hlen = txm->l2_len + txm->l3_len + txm->l4_len;
+ gdesc->txd.om = VMXNET3_OM_TSO;
+ gdesc->txd.msscof = mss;
+
+ deferred += (rte_pktmbuf_pkt_len(txm) - gdesc->txd.hlen + mss - 1) / mss;
+ } else if (txm->ol_flags & PKT_TX_L4_MASK) {
gdesc->txd.om = VMXNET3_OM_CSUM;
gdesc->txd.hlen = txm->l2_len + txm->l3_len;
txm->ol_flags & PKT_TX_L4_MASK);
abort();
}
+ deferred++;
} else {
gdesc->txd.hlen = 0;
gdesc->txd.om = VMXNET3_OM_NONE;
gdesc->txd.msscof = 0;
+ deferred++;
}
/* flip the GEN bit on the SOP */
rte_compiler_barrier();
gdesc->dword[2] ^= VMXNET3_TXD_GEN;
- txq_ctrl->txNumDeferred = rte_cpu_to_le_32(++deferred);
+ txq_ctrl->txNumDeferred = rte_cpu_to_le_32(deferred);
nb_tx++;
}
rxd = (struct Vmxnet3_RxDesc *)(ring->base + ring->next2fill);
/* Allocate blank mbuf for the current Rx Descriptor */
- mbuf = rte_rxmbuf_alloc(rxq->mp);
+ mbuf = rte_mbuf_raw_alloc(rxq->mp);
if (unlikely(mbuf == NULL)) {
PMD_RX_LOG(ERR, "Error allocating mbuf");
rxq->stats.rx_buf_alloc_failure++;
static void
vmxnet3_rx_offload(const Vmxnet3_RxCompDesc *rcd, struct rte_mbuf *rxm)
{
- /* Check for hardware stripped VLAN tag */
- if (rcd->ts) {
- rxm->ol_flags |= PKT_RX_VLAN_PKT;
- rxm->vlan_tci = rte_le_to_cpu_16((uint16_t)rcd->tci);
- }
-
/* Check for RSS */
if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE) {
rxm->ol_flags |= PKT_RX_RSS_HASH;
idx = rcd->rxdIdx;
ring_idx = (uint8_t)((rcd->rqID == rxq->qid1) ? 0 : 1);
rxd = (Vmxnet3_RxDesc *)rxq->cmd_ring[ring_idx].base + idx;
+ RTE_SET_USED(rxd); /* used only for assert when enabled */
rbi = rxq->cmd_ring[ring_idx].buf_info + idx;
- if (unlikely(rcd->sop != 1 || rcd->eop != 1)) {
- rte_pktmbuf_free_seg(rbi->m);
- PMD_RX_LOG(DEBUG, "Packet spread across multiple buffers\n)");
- goto rcd_done;
- }
-
PMD_RX_LOG(DEBUG, "rxd idx: %d ring idx: %d.", idx, ring_idx);
- VMXNET3_ASSERT(rcd->len <= rxd->len);
- VMXNET3_ASSERT(rbi->m);
-
- if (unlikely(rcd->len == 0)) {
- PMD_RX_LOG(DEBUG, "Rx buf was skipped. rxring[%d][%d]\n)",
- ring_idx, idx);
- VMXNET3_ASSERT(rcd->sop && rcd->eop);
- rte_pktmbuf_free_seg(rbi->m);
- goto rcd_done;
- }
-
- /* Assuming a packet is coming in a single packet buffer */
- if (unlikely(rxd->btype != VMXNET3_RXD_BTYPE_HEAD)) {
- PMD_RX_LOG(DEBUG,
- "Alert : Misbehaving device, incorrect "
- " buffer type used. Packet dropped.");
- rte_pktmbuf_free_seg(rbi->m);
- goto rcd_done;
- }
- VMXNET3_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_HEAD);
+ RTE_ASSERT(rcd->len <= rxd->len);
+ RTE_ASSERT(rbi->m);
/* Get the packet buffer pointer from buf_info */
rxm = rbi->m;
rxq->cmd_ring[ring_idx].next2comp = idx;
/* For RCD with EOP set, check if there is frame error */
- if (unlikely(rcd->err)) {
+ if (unlikely(rcd->eop && rcd->err)) {
rxq->stats.drop_total++;
rxq->stats.drop_err++;
rxm->ol_flags = 0;
rxm->vlan_tci = 0;
- vmxnet3_rx_offload(rcd, rxm);
+ /*
+ * If this is the first buffer of the received packet,
+ * set the pointer to the first mbuf of the packet
+ * 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 (rcd->sop) {
+ RTE_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_HEAD);
+
+ if (unlikely(rcd->len == 0)) {
+ RTE_ASSERT(rcd->eop);
+
+ PMD_RX_LOG(DEBUG,
+ "Rx buf was skipped. rxring[%d][%d])",
+ ring_idx, idx);
+ rte_pktmbuf_free_seg(rxm);
+ goto rcd_done;
+ }
+
+ rxq->start_seg = rxm;
+ vmxnet3_rx_offload(rcd, rxm);
+ } else {
+ struct rte_mbuf *start = rxq->start_seg;
+
+ RTE_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_BODY);
+
+ start->pkt_len += rxm->data_len;
+ start->nb_segs++;
+
+ rxq->last_seg->next = rxm;
+ }
+ rxq->last_seg = rxm;
+
+ if (rcd->eop) {
+ struct rte_mbuf *start = rxq->start_seg;
+
+ /* Check for hardware stripped VLAN tag */
+ if (rcd->ts) {
+ start->ol_flags |= (PKT_RX_VLAN_PKT | PKT_RX_VLAN_STRIPPED);
+ start->vlan_tci = rte_le_to_cpu_16((uint16_t)rcd->tci);
+ }
+
+ rx_pkts[nb_rx++] = start;
+ rxq->start_seg = NULL;
+ }
- rx_pkts[nb_rx++] = rxm;
rcd_done:
rxq->cmd_ring[ring_idx].next2comp = idx;
VMXNET3_INC_RING_IDX_ONLY(rxq->cmd_ring[ring_idx].next2comp, rxq->cmd_ring[ring_idx].size);
PMD_INIT_FUNC_TRACE();
- if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOXSUMS) !=
+ if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOXSUMSCTP) !=
ETH_TXQ_FLAGS_NOXSUMSCTP) {
PMD_INIT_LOG(ERR, "SCTP checksum offload not supported");
return -EINVAL;
int size;
uint8_t i;
char mem_name[32];
- uint16_t buf_size;
PMD_INIT_FUNC_TRACE();
- buf_size = rte_pktmbuf_data_room_size(mp) -
- RTE_PKTMBUF_HEADROOM;
-
- if (dev->data->dev_conf.rxmode.max_rx_pkt_len > buf_size) {
- PMD_INIT_LOG(ERR, "buf_size = %u, max_pkt_len = %u, "
- "VMXNET3 don't support scatter packets yet",
- buf_size, dev->data->dev_conf.rxmode.max_rx_pkt_len);
- return -EINVAL;
- }
-
rxq = rte_zmalloc("ethdev_rx_queue", sizeof(struct vmxnet3_rx_queue), RTE_CACHE_LINE_SIZE);
if (rxq == NULL) {
PMD_INIT_LOG(ERR, "Can not allocate rx queue structure");
}
}
rxq->stopped = FALSE;
+ rxq->start_seg = NULL;
}
for (i = 0; i < dev->data->nb_tx_queues; i++) {
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