efx_qword_t *evq_hw_ring;
struct sfc_ef10_rx_sw_desc *sw_ring;
uint64_t rearm_data;
+ struct rte_mbuf *scatter_pkt;
uint16_t prefix_size;
/* Used on refill */
{
uint16_t n_rx_pkts = RTE_MIN(nb_pkts, rxq->pending - rxq->completed);
+ SFC_ASSERT(rxq->pending == rxq->completed || rxq->scatter_pkt == NULL);
+
if (n_rx_pkts != 0) {
unsigned int completed = rxq->completed;
struct rte_mbuf *m;
struct rte_mbuf *m0;
const uint8_t *pseudo_hdr;
- uint16_t pkt_len;
+ uint16_t seg_len;
ready = (EFX_QWORD_FIELD(rx_ev, ESF_DZ_RX_DSC_PTR_LBITS) - pending) &
EFX_MASK32(ESF_DZ_RX_DSC_PTR_LBITS);
- SFC_ASSERT(ready > 0);
+
+ if (ready == 0) {
+ /* Rx abort - it was no enough descriptors for Rx packet */
+ rte_pktmbuf_free(rxq->scatter_pkt);
+ rxq->scatter_pkt = NULL;
+ return rx_pkts;
+ }
rxq->pending = pending + ready;
return rx_pkts;
}
+ /* If scattered packet is in progress */
+ if (rxq->scatter_pkt != NULL) {
+ /* Events for scattered packet frags are not merged */
+ SFC_ASSERT(ready == 1);
+ SFC_ASSERT(rxq->completed == pending);
+
+ /* There is no pseudo-header in scatter segments. */
+ seg_len = EFX_QWORD_FIELD(rx_ev, ESF_DZ_RX_BYTES);
+
+ rxd = &rxq->sw_ring[pending++ & ptr_mask];
+ m = rxd->mbuf;
+
+ MBUF_RAW_ALLOC_CHECK(m);
+
+ m->data_off = RTE_PKTMBUF_HEADROOM;
+ rte_pktmbuf_data_len(m) = seg_len;
+ rte_pktmbuf_pkt_len(m) = seg_len;
+
+ rxq->scatter_pkt->nb_segs++;
+ rte_pktmbuf_pkt_len(rxq->scatter_pkt) += seg_len;
+ rte_pktmbuf_lastseg(rxq->scatter_pkt)->next = m;
+
+ if (~rx_ev.eq_u64[0] &
+ rte_cpu_to_le_64(1ull << ESF_DZ_RX_CONT_LBN)) {
+ *rx_pkts++ = rxq->scatter_pkt;
+ rxq->scatter_pkt = NULL;
+ }
+ rxq->completed = pending;
+ return rx_pkts;
+ }
+
rxd = &rxq->sw_ring[pending++ & ptr_mask];
sfc_ef10_rx_prefetch_next(rxq, pending & ptr_mask);
m = rxd->mbuf;
- *rx_pkts++ = m;
- rxq->completed = pending;
-
RTE_BUILD_BUG_ON(sizeof(m->rearm_data[0]) != sizeof(rxq->rearm_data));
m->rearm_data[0] = rxq->rearm_data;
m->hash.rss = sfc_ef10_rx_pseudo_hdr_get_hash(pseudo_hdr);
if (ready == 1)
- pkt_len = EFX_QWORD_FIELD(rx_ev, ESF_DZ_RX_BYTES) -
+ seg_len = EFX_QWORD_FIELD(rx_ev, ESF_DZ_RX_BYTES) -
rxq->prefix_size;
else
- pkt_len = sfc_ef10_rx_pseudo_hdr_get_len(pseudo_hdr);
- SFC_ASSERT(pkt_len > 0);
- rte_pktmbuf_data_len(m) = pkt_len;
- rte_pktmbuf_pkt_len(m) = pkt_len;
+ seg_len = sfc_ef10_rx_pseudo_hdr_get_len(pseudo_hdr);
+ SFC_ASSERT(seg_len > 0);
+ rte_pktmbuf_data_len(m) = seg_len;
+ rte_pktmbuf_pkt_len(m) = seg_len;
SFC_ASSERT(m->next == NULL);
+ if (~rx_ev.eq_u64[0] & rte_cpu_to_le_64(1ull << ESF_DZ_RX_CONT_LBN)) {
+ *rx_pkts++ = m;
+ rxq->completed = pending;
+ } else {
+ /* Events with CONT bit are not merged */
+ SFC_ASSERT(ready == 1);
+ rxq->scatter_pkt = m;
+ rxq->completed = pending;
+ return rx_pkts;
+ }
+
/* Remember mbuf to copy offload flags and packet type from */
m0 = m;
while (pending != rxq->pending) {
*/
m->hash.rss = sfc_ef10_rx_pseudo_hdr_get_hash(pseudo_hdr);
- pkt_len = sfc_ef10_rx_pseudo_hdr_get_len(pseudo_hdr);
- SFC_ASSERT(pkt_len > 0);
- rte_pktmbuf_data_len(m) = pkt_len;
- rte_pktmbuf_pkt_len(m) = pkt_len;
+ seg_len = sfc_ef10_rx_pseudo_hdr_get_len(pseudo_hdr);
+ SFC_ASSERT(seg_len > 0);
+ rte_pktmbuf_data_len(m) = seg_len;
+ rte_pktmbuf_pkt_len(m) = seg_len;
SFC_ASSERT(m->next == NULL);
}
static sfc_dp_rx_qdesc_npending_t sfc_ef10_rx_qdesc_npending;
static unsigned int
-sfc_ef10_rx_qdesc_npending(__rte_unused struct sfc_dp_rxq *dp_rxq)
+sfc_ef10_rx_qdesc_npending(struct sfc_dp_rxq *dp_rxq)
{
+ struct sfc_ef10_rxq *rxq = sfc_ef10_rxq_by_dp_rxq(dp_rxq);
+ efx_qword_t rx_ev;
+ const unsigned int evq_old_read_ptr = rxq->evq_read_ptr;
+ unsigned int pending = rxq->pending;
+ unsigned int ready;
+
+ if (unlikely(rxq->flags &
+ (SFC_EF10_RXQ_NOT_RUNNING | SFC_EF10_RXQ_EXCEPTION)))
+ goto done;
+
+ while (sfc_ef10_rx_get_event(rxq, &rx_ev)) {
+ ready = (EFX_QWORD_FIELD(rx_ev, ESF_DZ_RX_DSC_PTR_LBITS) -
+ pending) &
+ EFX_MASK32(ESF_DZ_RX_DSC_PTR_LBITS);
+ pending += ready;
+ }
+
/*
- * Correct implementation requires EvQ polling and events
- * processing (keeping all ready mbufs in prepared).
+ * The function does not process events, so return event queue read
+ * pointer to the original position to allow the events that were
+ * read to be processed later
*/
- return -ENOTSUP;
+ rxq->evq_read_ptr = evq_old_read_ptr;
+
+done:
+ return pending - rxq->completed;
}
static sfc_dp_rx_qdesc_status_t sfc_ef10_rx_qdesc_status;
static int
-sfc_ef10_rx_qdesc_status(__rte_unused struct sfc_dp_rxq *dp_rxq,
- __rte_unused uint16_t offset)
+sfc_ef10_rx_qdesc_status(struct sfc_dp_rxq *dp_rxq, uint16_t offset)
{
- return -ENOTSUP;
+ struct sfc_ef10_rxq *rxq = sfc_ef10_rxq_by_dp_rxq(dp_rxq);
+ unsigned int npending = sfc_ef10_rx_qdesc_npending(dp_rxq);
+
+ if (unlikely(offset > rxq->ptr_mask))
+ return -EINVAL;
+
+ if (offset < npending)
+ return RTE_ETH_RX_DESC_DONE;
+
+ if (offset < (rxq->added - rxq->completed))
+ return RTE_ETH_RX_DESC_AVAIL;
+
+ return RTE_ETH_RX_DESC_UNAVAIL;
}
unsigned int i;
struct sfc_ef10_rx_sw_desc *rxd;
+ rte_pktmbuf_free(rxq->scatter_pkt);
+ rxq->scatter_pkt = NULL;
+
for (i = rxq->completed; i != rxq->added; ++i) {
rxd = &rxq->sw_ring[i & rxq->ptr_mask];
rte_mbuf_raw_free(rxd->mbuf);
.type = SFC_DP_RX,
.hw_fw_caps = SFC_DP_HW_FW_CAP_EF10,
},
- .features = SFC_DP_RX_FEAT_MULTI_PROCESS |
+ .features = SFC_DP_RX_FEAT_SCATTER |
+ SFC_DP_RX_FEAT_MULTI_PROCESS |
SFC_DP_RX_FEAT_TUNNELS |
SFC_DP_RX_FEAT_CHECKSUM,
.get_dev_info = sfc_ef10_rx_get_dev_info,
git.droids-corp.org / dpdk.git / blobdiff