[PATCH v2 23/26] net/octeontx: add packet receive burst function
From: Santosh Shukla <hidden>
Date: 2017-10-08 12:46:20
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Jerin Jacob <redacted> Signed-off-by: Jerin Jacob <redacted> Co-authored-by: Santosh Shukla [off-list ref] Signed-off-by: Santosh Shukla <redacted> --- drivers/net/octeontx/octeontx_rxtx.c | 38 ++++++++++++++++++++++++++++++++++++ drivers/net/octeontx/octeontx_rxtx.h | 2 ++ 2 files changed, 40 insertions(+)
diff --git a/drivers/net/octeontx/octeontx_rxtx.c b/drivers/net/octeontx/octeontx_rxtx.c
index 32f46ae49..05f003649 100644
--- a/drivers/net/octeontx/octeontx_rxtx.c
+++ b/drivers/net/octeontx/octeontx_rxtx.c@@ -102,3 +102,41 @@ octeontx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts) return count; /* return number of pkts transmitted */ } + +uint16_t __hot +octeontx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) +{ + struct rte_mbuf *mbuf; + struct octeontx_rxq *rxq; + struct rte_event ev; + octtx_wqe_t *wqe; + size_t count; + uint16_t valid_event; + + rxq = rx_queue; + count = 0; + while (count < nb_pkts) { + valid_event = rte_event_dequeue_burst(rxq->evdev, + rxq->ev_ports, &ev, + 1, 0); + if (!valid_event) + break; + + wqe = (octtx_wqe_t *)(uintptr_t)ev.u64; + rte_prefetch_non_temporal(wqe); + + /* Get mbuf from wqe */ + mbuf = (struct rte_mbuf *)((uintptr_t)wqe - + OCTTX_PACKET_WQE_SKIP); + mbuf->data_off = RTE_PTR_DIFF(wqe->s.w3.addr, mbuf->buf_addr); + mbuf->pkt_len = wqe->s.w1.len; + mbuf->data_len = mbuf->pkt_len; + mbuf->nb_segs = 1; + mbuf->ol_flags = 0; + mbuf->port = rxq->port_id; + rte_mbuf_refcnt_set(mbuf, 1); + rx_pkts[count++] = mbuf; + } + + return count; /* return number of pkts received */ +}
diff --git a/drivers/net/octeontx/octeontx_rxtx.h b/drivers/net/octeontx/octeontx_rxtx.h
index 4a49fc159..1f9153272 100644
--- a/drivers/net/octeontx/octeontx_rxtx.h
+++ b/drivers/net/octeontx/octeontx_rxtx.h@@ -42,5 +42,7 @@ uint16_t octeontx_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); +uint16_t +octeontx_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); #endif /* __OCTEONTX_RXTX_H__ */
--
2.14.1