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* [dpdk-dev] [PATCH] ethdev: get rxq interrupt fd
@ 2018-09-28  3:43 Xiaoyun Li
  2018-09-28  8:33 ` Ferruh Yigit
                   ` (3 more replies)
  0 siblings, 4 replies; 9+ messages in thread
From: Xiaoyun Li @ 2018-09-28  3:43 UTC (permalink / raw)
  To: ferruh.yigit, thomas, helin.zhang, damarion, ray.kinsella, dev; +Cc: Xiaoyun Li

Some users want to use their own epoll instances to control both
DPDK rxq interrupt fds and their own other fds. So added a function
to get rxq interrupt fd based on port id and queue id.

Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
---
 lib/librte_ethdev/rte_ethdev.c | 37 ++++++++++++++++++++++++++++++++++
 lib/librte_ethdev/rte_ethdev.h |  3 +++
 2 files changed, 40 insertions(+)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index ef99f7068..c21124e32 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -3433,6 +3433,43 @@ rte_eth_dev_rx_intr_ctl(uint16_t port_id, int epfd, int op, void *data)
 	return 0;
 }
 
+int
+rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id,
+				 int *fd)
+{
+	struct rte_intr_handle *intr_handle;
+	struct rte_eth_dev *dev;
+	unsigned int efd_idx;
+	uint32_t vec;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+
+	dev = &rte_eth_devices[port_id];
+
+	if (queue_id >= dev->data->nb_rx_queues) {
+		RTE_ETHDEV_LOG(ERR, "Invalid RX queue_id=%u\n", queue_id);
+		return -EINVAL;
+	}
+
+	if (!dev->intr_handle) {
+		RTE_ETHDEV_LOG(ERR, "RX Intr handle unset\n");
+		return -ENOTSUP;
+	}
+
+	intr_handle = dev->intr_handle;
+	if (!intr_handle->intr_vec) {
+		RTE_ETHDEV_LOG(ERR, "RX Intr vector unset\n");
+		return -EPERM;
+	}
+
+	vec = intr_handle->intr_vec[queue_id];
+	efd_idx = (vec >= RTE_INTR_VEC_RXTX_OFFSET) ?
+		(vec - RTE_INTR_VEC_RXTX_OFFSET) : vec;
+	*fd = intr_handle->efds[efd_idx];
+
+	return 0;
+}
+
 const struct rte_memzone *
 rte_eth_dma_zone_reserve(const struct rte_eth_dev *dev, const char *ring_name,
 			 uint16_t queue_id, size_t size, unsigned align,
diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h
index 012577b0a..3670d7249 100644
--- a/lib/librte_ethdev/rte_ethdev.h
+++ b/lib/librte_ethdev/rte_ethdev.h
@@ -2719,6 +2719,9 @@ int rte_eth_dev_rx_intr_ctl(uint16_t port_id, int epfd, int op, void *data);
 int rte_eth_dev_rx_intr_ctl_q(uint16_t port_id, uint16_t queue_id,
 			      int epfd, int op, void *data);
 
+int rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id,
+				     int *fd);
+
 /**
  * Turn on the LED on the Ethernet device.
  * This function turns on the LED on the Ethernet device.
-- 
2.17.1

^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2018-10-04 15:31 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-09-28  3:43 [dpdk-dev] [PATCH] ethdev: get rxq interrupt fd Xiaoyun Li
2018-09-28  8:33 ` Ferruh Yigit
2018-09-28  9:08   ` Li, Xiaoyun
2018-09-28 10:05 ` [dpdk-dev] [PATCH v2] " Xiaoyun Li
2018-09-28 12:46 ` [dpdk-dev] [PATCH] " Stephen Hemminger
2018-09-29  1:57   ` Li, Xiaoyun
2018-09-29  2:12 ` [dpdk-dev] [PATCH v3] " Xiaoyun Li
2018-10-02 10:48   ` Ferruh Yigit
2018-10-04 15:31     ` Ferruh Yigit

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