ethdev: get Rx queue interrupt fd

[dpdk.git] / lib / librte_ethdev / rte_ethdev.c

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index ef99f70..4930eb6 100644 (file)
--- 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_experimental
+rte_eth_dev_rx_intr_ctl_q_get_fd(uint16_t port_id, uint16_t queue_id)
+{
+       struct rte_intr_handle *intr_handle;
+       struct rte_eth_dev *dev;
+       unsigned int efd_idx;
+       uint32_t vec;
+       int fd;
+
+       RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -1);
+
+       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 -1;
+       }
+
+       if (!dev->intr_handle) {
+               RTE_ETHDEV_LOG(ERR, "RX Intr handle unset\n");
+               return -1;
+       }
+
+       intr_handle = dev->intr_handle;
+       if (!intr_handle->intr_vec) {
+               RTE_ETHDEV_LOG(ERR, "RX Intr vector unset\n");
+               return -1;
+       }
+
+       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 fd;
+}
+
 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,