X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fnet%2Ffm10k%2Ffm10k_rxtx.c;h=4a5b46ec830a64d2d5b92c896a6ea47e400505e2;hb=9673e044a1593a2f62557095e6aa37ec197a04fb;hp=d6081e4858e38a1f33367571e19c094146b82f56;hpb=380a7aab1ae2894fa598d8c51962778670996e4a;p=dpdk.git

diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c
index d6081e4858..4a5b46ec83 100644
--- a/drivers/net/fm10k/fm10k_rxtx.c
+++ b/drivers/net/fm10k/fm10k_rxtx.c
@@ -1,39 +1,10 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2013-2016 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2013-2016 Intel Corporation
  */
 
 #include <inttypes.h>
 
-#include <rte_ethdev.h>
+#include <rte_ethdev_driver.h>
 #include <rte_common.h>
 #include <rte_net.h>
 #include "fm10k.h"
@@ -418,6 +389,84 @@ fm10k_dev_rx_descriptor_done(void *rx_queue, uint16_t offset)
 	return ret;
 }
 
+int
+fm10k_dev_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+	volatile union fm10k_rx_desc *rxdp;
+	struct fm10k_rx_queue *rxq = rx_queue;
+	uint16_t nb_hold, trigger_last;
+	uint16_t desc;
+	int ret;
+
+	if (unlikely(offset >= rxq->nb_desc)) {
+		PMD_DRV_LOG(ERR, "Invalid RX descriptor offset %u", offset);
+		return 0;
+	}
+
+	if (rxq->next_trigger < rxq->alloc_thresh)
+		trigger_last = rxq->next_trigger +
+					rxq->nb_desc - rxq->alloc_thresh;
+	else
+		trigger_last = rxq->next_trigger - rxq->alloc_thresh;
+
+	if (rxq->next_dd < trigger_last)
+		nb_hold = rxq->next_dd + rxq->nb_desc - trigger_last;
+	else
+		nb_hold = rxq->next_dd - trigger_last;
+
+	if (offset >= rxq->nb_desc - nb_hold)
+		return RTE_ETH_RX_DESC_UNAVAIL;
+
+	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;
+}
+
+int
+fm10k_dev_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+	volatile struct fm10k_tx_desc *txdp;
+	struct fm10k_tx_queue *txq = tx_queue;
+	uint16_t desc;
+	uint16_t next_rs = txq->nb_desc;
+	struct fifo rs_tracker = txq->rs_tracker;
+	struct fifo *r = &rs_tracker;
+
+	if (unlikely(offset >= txq->nb_desc))
+		return -EINVAL;
+
+	desc = txq->next_free + offset;
+	/* go to next desc that has the RS bit */
+	desc = (desc / txq->rs_thresh + 1) *
+		txq->rs_thresh - 1;
+
+	if (desc >= txq->nb_desc) {
+		desc -= txq->nb_desc;
+		if (desc >= txq->nb_desc)
+			desc -= txq->nb_desc;
+	}
+
+	r->head = r->list;
+	for ( ; r->head != r->endp; ) {
+		if (*r->head >= desc && *r->head < next_rs)
+			next_rs = *r->head;
+		++r->head;
+	}
+
+	txdp = &txq->hw_ring[next_rs];
+	if (txdp->flags & FM10K_TXD_FLAG_DONE)
+		return RTE_ETH_TX_DESC_DONE;
+
+	return RTE_ETH_TX_DESC_FULL;
+}
+
 /*
  * Free multiple TX mbuf at a time if they are in the same pool
  *