[PATCH v6 1/6] fm10k: implement rx_descriptor_done function
From: Shaopeng He <hidden>
Date: 2016-02-05 04:58:16
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
rx_descriptor_done is used by interrupt mode example application (l3fwd-power) to check rxd DD bit to decide the RX trend, then l3fwd-power will adjust the cpu frequency according to the result. Signed-off-by: Shaopeng He <redacted> Acked-by: Jing Chen <redacted> Acked-by: Michael Qiu <redacted> --- v5 change: - fix a wrong error message --- drivers/net/fm10k/fm10k.h | 3 +++ drivers/net/fm10k/fm10k_ethdev.c | 1 + drivers/net/fm10k/fm10k_rxtx.c | 25 +++++++++++++++++++++++++ 3 files changed, 29 insertions(+)
diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h
index cd38af2..e2f677a 100644
--- a/drivers/net/fm10k/fm10k.h
+++ b/drivers/net/fm10k/fm10k.h@@ -345,6 +345,9 @@ uint16_t fm10k_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t fm10k_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); +int +fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset); + uint16_t fm10k_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index e4aed94..d39c33b 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c@@ -2435,6 +2435,7 @@ static const struct eth_dev_ops fm10k_eth_dev_ops = { .rx_queue_release = fm10k_rx_queue_release, .tx_queue_setup = fm10k_tx_queue_setup, .tx_queue_release = fm10k_tx_queue_release, + .rx_descriptor_done = fm10k_dev_rx_descriptor_done, .reta_update = fm10k_reta_update, .reta_query = fm10k_reta_query, .rss_hash_update = fm10k_rss_hash_update,
diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
index e958865..0002f09 100644
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c@@ -369,6 +369,31 @@ fm10k_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, return nb_rcv; } +int +fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset) +{ + volatile union fm10k_rx_desc *rxdp; + struct fm10k_rx_queue *rxq = rx_queue; + uint16_t desc; + int ret; + + if (unlikely(offset >= rxq->nb_desc)) { + PMD_DRV_LOG(ERR, "Invalid RX descriptor offset %u", offset); + return 0; + } + + desc = rxq->next_dd + offset; + if (desc >= rxq->nb_desc) + desc -= rxq->nb_desc; + + rxdp = &rxq->hw_ring[desc]; + + ret = !!(rxdp->w.status & + rte_cpu_to_le_16(FM10K_RXD_STATUS_DD)); + + return ret; +} + static inline void tx_free_descriptors(struct fm10k_tx_queue *q) { uint16_t next_rs, count = 0;
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1.9.3