[dpdk-dev] [PATCH v4 03/23] lib/librte_ethdev: change eth-dev-ops API to return int

[Andy Green <andy@warmcat.com>]

Signed-off-by: Andy Green <andy@warmcat.com>
---
 drivers/net/ark/ark_ethdev_rx.c     |    4 ++--
 drivers/net/ark/ark_ethdev_rx.h     |    3 +--
 drivers/net/avf/avf_rxtx.c          |    4 ++--
 drivers/net/avf/avf_rxtx.h          |    2 +-
 drivers/net/bnxt/bnxt_ethdev.c      |    5 +++--
 drivers/net/dpaa/dpaa_ethdev.c      |    4 ++--
 drivers/net/dpaa2/dpaa2_ethdev.c    |    6 +++---
 drivers/net/e1000/e1000_ethdev.h    |    6 ++----
 drivers/net/e1000/em_rxtx.c         |    4 ++--
 drivers/net/e1000/igb_rxtx.c        |    4 ++--
 drivers/net/enic/enic_ethdev.c      |    9 +++------
 drivers/net/i40e/i40e_rxtx.c        |    4 ++--
 drivers/net/i40e/i40e_rxtx.h        |    3 +--
 drivers/net/ixgbe/ixgbe_ethdev.h    |    3 +--
 drivers/net/ixgbe/ixgbe_rxtx.c      |    4 ++--
 drivers/net/nfp/nfp_net.c           |    9 ++++-----
 drivers/net/sfc/sfc_ethdev.c        |    4 ++--
 drivers/net/thunderx/nicvf_ethdev.c |    2 +-
 drivers/net/thunderx/nicvf_rxtx.c   |    4 ++--
 drivers/net/thunderx/nicvf_rxtx.h   |    2 +-
 drivers/net/vhost/rte_eth_vhost.c   |    4 ++--
 examples/l3fwd-power/main.c         |    2 +-
 lib/librte_ethdev/rte_ethdev_core.h |    4 ++--
 23 files changed, 44 insertions(+), 52 deletions(-)

diff --git a/drivers/net/ark/ark_ethdev_rx.c b/drivers/net/ark/ark_ethdev_rx.c
index 987d085e2..7f0a6fc52 100644
--- a/drivers/net/ark/ark_ethdev_rx.c
+++ b/drivers/net/ark/ark_ethdev_rx.c
@@ -407,13 +407,13 @@ eth_ark_rx_queue_drain(struct ark_rx_queue *queue)
 	}
 }
 
-uint32_t
+int
 eth_ark_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_id)
 {
 	struct ark_rx_queue *queue;
 
 	queue = dev->data->rx_queues[queue_id];
-	return (queue->prod_index - queue->cons_index);	/* mod arith */
+	return (int)(queue->prod_index - queue->cons_index);	/* mod arith */
 }
 
 /* ************************************************************************* */
diff --git a/drivers/net/ark/ark_ethdev_rx.h b/drivers/net/ark/ark_ethdev_rx.h
index 146787112..c3f56be3b 100644
--- a/drivers/net/ark/ark_ethdev_rx.h
+++ b/drivers/net/ark/ark_ethdev_rx.h
@@ -47,8 +47,7 @@ int eth_ark_dev_rx_queue_setup(struct rte_eth_dev *dev,
 			       unsigned int socket_id,
 			       const struct rte_eth_rxconf *rx_conf,
 			       struct rte_mempool *mp);
-uint32_t eth_ark_dev_rx_queue_count(struct rte_eth_dev *dev,
-				    uint16_t rx_queue_id);
+int eth_ark_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 int eth_ark_rx_stop_queue(struct rte_eth_dev *dev, uint16_t queue_id);
 int eth_ark_rx_start_queue(struct rte_eth_dev *dev, uint16_t queue_id);
 uint16_t eth_ark_recv_pkts_noop(void *rx_queue, struct rte_mbuf **rx_pkts,
diff --git a/drivers/net/avf/avf_rxtx.c b/drivers/net/avf/avf_rxtx.c
index 1824ed70b..b4f7cea0b 100644
--- a/drivers/net/avf/avf_rxtx.c
+++ b/drivers/net/avf/avf_rxtx.c
@@ -1836,13 +1836,13 @@ avf_dev_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 }
 
 /* Get the number of used descriptors of a rx queue */
-uint32_t
+int
 avf_dev_rxq_count(struct rte_eth_dev *dev, uint16_t queue_id)
 {
 #define AVF_RXQ_SCAN_INTERVAL 4
 	volatile union avf_rx_desc *rxdp;
 	struct avf_rx_queue *rxq;
-	uint16_t desc = 0;
+	int desc = 0;
 
 	rxq = dev->data->rx_queues[queue_id];
 	rxdp = &rxq->rx_ring[rxq->rx_tail];
diff --git a/drivers/net/avf/avf_rxtx.h b/drivers/net/avf/avf_rxtx.h
index 297d0776d..fa287a003 100644
--- a/drivers/net/avf/avf_rxtx.h
+++ b/drivers/net/avf/avf_rxtx.h
@@ -185,7 +185,7 @@ void avf_dev_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 			  struct rte_eth_rxq_info *qinfo);
 void avf_dev_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
 			  struct rte_eth_txq_info *qinfo);
-uint32_t avf_dev_rxq_count(struct rte_eth_dev *dev, uint16_t queue_id);
+int avf_dev_rxq_count(struct rte_eth_dev *dev, uint16_t queue_id);
 int avf_dev_rx_desc_status(void *rx_queue, uint16_t offset);
 int avf_dev_tx_desc_status(void *tx_queue, uint16_t offset);
 
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 348129dad..3e0201fb8 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -1619,15 +1619,16 @@ bnxt_dev_led_off_op(struct rte_eth_dev *dev)
 	return bnxt_hwrm_port_led_cfg(bp, false);
 }
 
-static uint32_t
+static int
 bnxt_rx_queue_count_op(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
-	uint32_t desc = 0, raw_cons = 0, cons;
 	struct bnxt_cp_ring_info *cpr;
+	uint32_t raw_cons = 0, cons;
 	struct bnxt_rx_queue *rxq;
 	struct rx_pkt_cmpl *rxcmp;
 	uint16_t cmp_type;
 	uint8_t cmp = 1;
+	int desc = 0;
 	bool valid;
 
 	rxq = dev->data->rx_queues[rx_queue_id];
diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index f7e234d58..37f5331b0 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -738,7 +738,7 @@ static void dpaa_eth_tx_queue_release(void *txq __rte_unused)
 	PMD_INIT_FUNC_TRACE();
 }
 
-static uint32_t
+static int
 dpaa_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 	struct dpaa_if *dpaa_intf = dev->data->dev_private;
@@ -751,7 +751,7 @@ dpaa_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 		RTE_LOG(DEBUG, PMD, "RX frame count for q(%d) is %u\n",
 			rx_queue_id, frm_cnt);
 	}
-	return frm_cnt;
+	return (int)frm_cnt;
 }
 
 static int dpaa_link_down(struct rte_eth_dev *dev)
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index 8999cb2e8..889c80c3b 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -620,7 +620,7 @@ dpaa2_dev_tx_queue_release(void *q __rte_unused)
 	PMD_INIT_FUNC_TRACE();
 }
 
-static uint32_t
+static int
 dpaa2_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 	int32_t ret;
@@ -628,7 +628,7 @@ dpaa2_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 	struct dpaa2_queue *dpaa2_q;
 	struct qbman_swp *swp;
 	struct qbman_fq_query_np_rslt state;
-	uint32_t frame_cnt = 0;
+	int frame_cnt = 0;
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -644,7 +644,7 @@ dpaa2_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 	dpaa2_q = (struct dpaa2_queue *)priv->rx_vq[rx_queue_id];
 
 	if (qbman_fq_query_state(swp, dpaa2_q->fqid, &state) == 0) {
-		frame_cnt = qbman_fq_state_frame_count(&state);
+		frame_cnt = (int)qbman_fq_state_frame_count(&state);
 		DPAA2_PMD_DEBUG("RX frame count for q(%d) is %u",
 				rx_queue_id, frame_cnt);
 	}
diff --git a/drivers/net/e1000/e1000_ethdev.h b/drivers/net/e1000/e1000_ethdev.h
index 902001f36..aeaa90048 100644
--- a/drivers/net/e1000/e1000_ethdev.h
+++ b/drivers/net/e1000/e1000_ethdev.h
@@ -370,8 +370,7 @@ int eth_igb_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 		const struct rte_eth_rxconf *rx_conf,
 		struct rte_mempool *mb_pool);
 
-uint32_t eth_igb_rx_queue_count(struct rte_eth_dev *dev,
-		uint16_t rx_queue_id);
+int eth_igb_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 
 int eth_igb_rx_descriptor_done(void *rx_queue, uint16_t offset);
 
@@ -447,8 +446,7 @@ int eth_em_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 		const struct rte_eth_rxconf *rx_conf,
 		struct rte_mempool *mb_pool);
 
-uint32_t eth_em_rx_queue_count(struct rte_eth_dev *dev,
-		uint16_t rx_queue_id);
+int eth_em_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 
 int eth_em_rx_descriptor_done(void *rx_queue, uint16_t offset);
 
diff --git a/drivers/net/e1000/em_rxtx.c b/drivers/net/e1000/em_rxtx.c
index 2b3c63e1c..16b0f49ca 100644
--- a/drivers/net/e1000/em_rxtx.c
+++ b/drivers/net/e1000/em_rxtx.c
@@ -1528,7 +1528,7 @@ eth_em_rx_queue_setup(struct rte_eth_dev *dev,
 	return 0;
 }
 
-uint32_t
+int
 eth_em_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 #define EM_RXQ_SCAN_INTERVAL 4
@@ -1548,7 +1548,7 @@ eth_em_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 				desc - rxq->nb_rx_desc]);
 	}
 
-	return desc;
+	return (int)desc;
 }
 
 int
diff --git a/drivers/net/e1000/igb_rxtx.c b/drivers/net/e1000/igb_rxtx.c
index a3776a0d7..246bebd41 100644
--- a/drivers/net/e1000/igb_rxtx.c
+++ b/drivers/net/e1000/igb_rxtx.c
@@ -1808,7 +1808,7 @@ eth_igb_rx_queue_setup(struct rte_eth_dev *dev,
 	return 0;
 }
 
-uint32_t
+int
 eth_igb_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 #define IGB_RXQ_SCAN_INTERVAL 4
@@ -1828,7 +1828,7 @@ eth_igb_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 				desc - rxq->nb_rx_desc]);
 	}
 
-	return desc;
+	return (int)desc;
 }
 
 int
diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c
index 286308924..14dbe9f91 100644
--- a/drivers/net/enic/enic_ethdev.c
+++ b/drivers/net/enic/enic_ethdev.c
@@ -269,11 +269,10 @@ static void enicpmd_dev_rx_queue_release(void *rxq)
 	enic_free_rq(rxq);
 }
 
-static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
-					   uint16_t rx_queue_id)
+static int enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
+				      uint16_t rx_queue_id)
 {
 	struct enic *enic = pmd_priv(dev);
-	uint32_t queue_count = 0;
 	struct vnic_cq *cq;
 	uint32_t cq_tail;
 	uint16_t cq_idx;
@@ -288,9 +287,7 @@ static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
 	if (cq_tail < cq_idx)
 		cq_tail += cq->ring.desc_count;
 
-	queue_count = cq_tail - cq_idx;
-
-	return queue_count;
+	return (int)(cq_tail - cq_idx);
 }
 
 static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 62985c3a9..3187bfb06 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -1961,7 +1961,7 @@ i40e_dev_rx_queue_release(void *rxq)
 	rte_free(q);
 }
 
-uint32_t
+int
 i40e_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 #define I40E_RXQ_SCAN_INTERVAL 4
@@ -1987,7 +1987,7 @@ i40e_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 					desc - rxq->nb_rx_desc]);
 	}
 
-	return desc;
+	return (int)desc;
 }
 
 int
diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
index ea73a8a1b..669377099 100644
--- a/drivers/net/i40e/i40e_rxtx.h
+++ b/drivers/net/i40e/i40e_rxtx.h
@@ -205,8 +205,7 @@ void i40e_tx_queue_release_mbufs(struct i40e_tx_queue *txq);
 int i40e_alloc_rx_queue_mbufs(struct i40e_rx_queue *rxq);
 void i40e_rx_queue_release_mbufs(struct i40e_rx_queue *rxq);
 
-uint32_t i40e_dev_rx_queue_count(struct rte_eth_dev *dev,
-				 uint16_t rx_queue_id);
+int i40e_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 int i40e_dev_rx_descriptor_done(void *rx_queue, uint16_t offset);
 int i40e_dev_rx_descriptor_status(void *rx_queue, uint16_t offset);
 int i40e_dev_tx_descriptor_status(void *tx_queue, uint16_t offset);
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
index cc512d602..e05c21507 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.h
+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
@@ -566,8 +566,7 @@ int  ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 		uint16_t nb_tx_desc, unsigned int socket_id,
 		const struct rte_eth_txconf *tx_conf);
 
-uint32_t ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev,
-		uint16_t rx_queue_id);
+int ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
 
 int ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset);
 
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 2892436e9..7985a8971 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -3118,7 +3118,7 @@ ixgbe_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	return 0;
 }
 
-uint32_t
+int
 ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 #define IXGBE_RXQ_SCAN_INTERVAL 4
@@ -3139,7 +3139,7 @@ ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 				desc - rxq->nb_rx_desc]);
 	}
 
-	return desc;
+	return (int)desc;
 }
 
 int
diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index f114b1839..65f81dd8e 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -79,8 +79,7 @@ static int nfp_net_link_update(struct rte_eth_dev *dev, int wait_to_complete);
 static void nfp_net_promisc_enable(struct rte_eth_dev *dev);
 static void nfp_net_promisc_disable(struct rte_eth_dev *dev);
 static int nfp_net_rx_fill_freelist(struct nfp_net_rxq *rxq);
-static uint32_t nfp_net_rx_queue_count(struct rte_eth_dev *dev,
-				       uint16_t queue_idx);
+static int nfp_net_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx);
 static uint16_t nfp_net_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 				  uint16_t nb_pkts);
 static void nfp_net_rx_queue_release(void *rxq);
@@ -1371,13 +1370,13 @@ nfp_net_supported_ptypes_get(struct rte_eth_dev *dev)
 	return NULL;
 }
 
-static uint32_t
+static int
 nfp_net_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx)
 {
 	struct nfp_net_rxq *rxq;
 	struct nfp_net_rx_desc *rxds;
 	uint32_t idx;
-	uint32_t count;
+	int count;
 
 	rxq = (struct nfp_net_rxq *)dev->data->rx_queues[queue_idx];
 
@@ -1402,7 +1401,7 @@ nfp_net_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx)
 		idx++;
 
 		/* Wrapping? */
-		if ((idx) == rxq->rx_count)
+		if (idx == rxq->rx_count)
 			idx = 0;
 	}
 
diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index a8c0f8e19..ca5d0a916 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -1113,14 +1113,14 @@ sfc_tx_queue_info_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 	sfc_adapter_unlock(sa);
 }
 
-static uint32_t
+static int
 sfc_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 	struct sfc_adapter *sa = dev->data->dev_private;
 
 	sfc_log_init(sa, "RxQ=%u", rx_queue_id);
 
-	return sfc_rx_qdesc_npending(sa, rx_queue_id);
+	return (int)sfc_rx_qdesc_npending(sa, rx_queue_id);
 }
 
 static int
diff --git a/drivers/net/thunderx/nicvf_ethdev.c b/drivers/net/thunderx/nicvf_ethdev.c
index b673b4716..56c1d06c5 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -1054,7 +1054,7 @@ nicvf_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t qidx,
 static inline void
 nicvf_rx_queue_release_mbufs(struct rte_eth_dev *dev, struct nicvf_rxq *rxq)
 {
-	uint32_t rxq_cnt;
+	int rxq_cnt;
 	uint32_t nb_pkts, released_pkts = 0;
 	uint32_t refill_cnt = 0;
 	struct rte_mbuf *rx_pkts[NICVF_MAX_RX_FREE_THRESH];
diff --git a/drivers/net/thunderx/nicvf_rxtx.c b/drivers/net/thunderx/nicvf_rxtx.c
index 72305d9d2..133b8ba27 100644
--- a/drivers/net/thunderx/nicvf_rxtx.c
+++ b/drivers/net/thunderx/nicvf_rxtx.c
@@ -535,13 +535,13 @@ nicvf_recv_pkts_multiseg(void *rx_queue, struct rte_mbuf **rx_pkts,
 	return to_process;
 }
 
-uint32_t
+int
 nicvf_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx)
 {
 	struct nicvf_rxq *rxq;
 
 	rxq = dev->data->rx_queues[queue_idx];
-	return nicvf_addr_read(rxq->cq_status) & NICVF_CQ_CQE_COUNT_MASK;
+	return (int)(nicvf_addr_read(rxq->cq_status) & NICVF_CQ_CQE_COUNT_MASK);
 }
 
 uint32_t
diff --git a/drivers/net/thunderx/nicvf_rxtx.h b/drivers/net/thunderx/nicvf_rxtx.h
index 8bdd582ed..792beb85a 100644
--- a/drivers/net/thunderx/nicvf_rxtx.h
+++ b/drivers/net/thunderx/nicvf_rxtx.h
@@ -83,7 +83,7 @@ nicvf_mbuff_init_mseg_update(struct rte_mbuf *pkt, const uint64_t mbuf_init,
 	*(uint64_t *)(&pkt->rearm_data) = init.value;
 }
 
-uint32_t nicvf_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx);
+int nicvf_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx);
 uint32_t nicvf_dev_rbdr_refill(struct rte_eth_dev *dev, uint16_t queue_idx);
 
 uint16_t nicvf_recv_pkts(void *rxq, struct rte_mbuf **rx_pkts, uint16_t pkts);
diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
index ff5424a92..4c8d844ed 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -1163,7 +1163,7 @@ eth_link_update(struct rte_eth_dev *dev __rte_unused,
 	return 0;
 }
 
-static uint32_t
+static int
 eth_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 	struct vhost_queue *vq;
@@ -1172,7 +1172,7 @@ eth_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 	if (vq == NULL)
 		return 0;
 
-	return rte_vhost_rx_queue_count(vq->vid, vq->virtqueue_id);
+	return (int)rte_vhost_rx_queue_count(vq->vid, vq->virtqueue_id);
 }
 
 static const struct eth_dev_ops ops = {
diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
index 596d64548..22dd7006f 100644
--- a/examples/l3fwd-power/main.c
+++ b/examples/l3fwd-power/main.c
@@ -722,7 +722,7 @@ power_freq_scaleup_heuristic(unsigned lcore_id,
 			     uint16_t port_id,
 			     uint16_t queue_id)
 {
-	uint32_t rxq_count = rte_eth_rx_queue_count(port_id, queue_id);
+	int rxq_count = rte_eth_rx_queue_count(port_id, queue_id);
 /**
  * HW Rx queue size is 128 by default, Rx burst read at maximum 32 entries
  * per iteration
diff --git a/lib/librte_ethdev/rte_ethdev_core.h b/lib/librte_ethdev/rte_ethdev_core.h
index 33d12b3a2..5e77555d3 100644
--- a/lib/librte_ethdev/rte_ethdev_core.h
+++ b/lib/librte_ethdev/rte_ethdev_core.h
@@ -144,8 +144,8 @@ typedef int (*eth_rx_disable_intr_t)(struct rte_eth_dev *dev,
 typedef void (*eth_queue_release_t)(void *queue);
 /**< @internal Release memory resources allocated by given RX/TX queue. */
 
-typedef uint32_t (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
-					 uint16_t rx_queue_id);
+typedef int (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
+				    uint16_t rx_queue_id);
 /**< @internal Get number of used descriptors on a receive queue. */
 
 typedef int (*eth_rx_descriptor_done_t)(void *rxq, uint16_t offset);