[PATCH v6 3/6] fm10k: remove rx queue interrupts when dev stops
From: Shaopeng He <hidden>
Date: 2016-02-05 04:58:29
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Previous dev_stop function stops the rx/tx queues. This patch adds logic to disable rx queue interrupt, clean the datapath event and queue/vec map. Signed-off-by: Shaopeng He <redacted> Acked-by: Jing Chen <redacted> Acked-by: Michael Qiu <redacted> --- v5 change: - remove one unnecessary NULL check for rte_free v2 change: - split one big patch into three smaller ones --- drivers/net/fm10k/fm10k_ethdev.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index 583335a..da78389 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c@@ -1127,6 +1127,8 @@ fm10k_dev_start(struct rte_eth_dev *dev) static void fm10k_dev_stop(struct rte_eth_dev *dev) { + struct fm10k_hw *hw = FM10K_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle; int i; PMD_INIT_FUNC_TRACE();
@@ -1138,6 +1140,24 @@ fm10k_dev_stop(struct rte_eth_dev *dev) if (dev->data->rx_queues) for (i = 0; i < dev->data->nb_rx_queues; i++) fm10k_dev_rx_queue_stop(dev, i); + + /* Disable datapath event */ + if (rte_intr_dp_is_en(intr_handle)) { + for (i = 0; i < dev->data->nb_rx_queues; i++) { + FM10K_WRITE_REG(hw, FM10K_RXINT(i), + 3 << FM10K_RXINT_TIMER_SHIFT); + if (hw->mac.type == fm10k_mac_pf) + FM10K_WRITE_REG(hw, FM10K_ITR(Q2V(dev, i)), + FM10K_ITR_MASK_SET); + else + FM10K_WRITE_REG(hw, FM10K_VFITR(Q2V(dev, i)), + FM10K_ITR_MASK_SET); + } + } + /* Clean datapath event and queue/vec mapping */ + rte_intr_efd_disable(intr_handle); + rte_free(intr_handle->intr_vec); + intr_handle->intr_vec = NULL; } static void
--
1.9.3