From 2545683564aa15f36392be2b4ceead454064135b Mon Sep 17 00:00:00 2001 From: Wei Huang Date: Tue, 7 Jun 2022 05:07:22 -0400 Subject: [PATCH] raw/ifpga: unregister interrupt on close There is an API rte_pmd_ifpga_cleanup provided by ifpga driver to free the software resource used by ifpga card. The function call of rte_pmd_ifpga_cleanup is list below. rte_pmd_ifpga_cleanup() ifpga_rawdev_cleanup() rte_rawdev_pmd_release() rte_rawdev_close() ifpga_rawdev_close() The interrupts are unregistered in ifpga_rawdev_destroy instead of ifpga_rawdev_close function, so rte_pmd_ifpga_cleanup cannot free interrupt resource as expected. To fix such issue, interrupt unregistration is moved from ifpga_rawdev_destroy to ifpga_rawdev_close function. The change of function call of ifpga_rawdev_destroy is as below. ifpga_rawdev_destroy() ifpga_unregister_msix_irq() // removed rte_rawdev_pmd_release() rte_rawdev_close() ifpga_rawdev_close() Fixes: e0a1aafe2af9 ("raw/ifpga: introduce IRQ functions") Cc: stable@dpdk.org Signed-off-by: Wei Huang Acked-by: Tianfei Zhang Reviewed-by: Rosen Xu --- drivers/raw/ifpga/ifpga_rawdev.c | 29 +++++++++++------------------ 1 file changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/raw/ifpga/ifpga_rawdev.c b/drivers/raw/ifpga/ifpga_rawdev.c index fe3fc43abe..94df56c90c 100644 --- a/drivers/raw/ifpga/ifpga_rawdev.c +++ b/drivers/raw/ifpga/ifpga_rawdev.c @@ -78,6 +78,7 @@ static int set_surprise_link_check_aer( static int ifpga_pci_find_next_ext_capability(unsigned int fd, int start, uint32_t cap); static int ifpga_pci_find_ext_capability(unsigned int fd, uint32_t cap); +static void fme_interrupt_handler(void *param); struct ifpga_rawdev * ifpga_rawdev_get(const struct rte_rawdev *rawdev) @@ -740,8 +741,9 @@ ifpga_rawdev_close(struct rte_rawdev *dev) { struct ifpga_rawdev *ifpga_rdev = NULL; struct opae_adapter *adapter; + struct opae_manager *mgr; char *vdev_name = NULL; - int i = 0; + int i, ret = 0; if (dev) { ifpga_rdev = ifpga_rawdev_get(dev); @@ -756,12 +758,19 @@ ifpga_rawdev_close(struct rte_rawdev *dev) } adapter = ifpga_rawdev_get_priv(dev); if (adapter) { + mgr = opae_adapter_get_mgr(adapter); + if (ifpga_rdev && mgr) { + if (ifpga_unregister_msix_irq(ifpga_rdev, + IFPGA_FME_IRQ, 0, + fme_interrupt_handler, mgr) < 0) + ret = -EINVAL; + } opae_adapter_destroy(adapter); opae_adapter_data_free(adapter->data); } } - return dev ? 0:1; + return ret; } static int @@ -1629,9 +1638,6 @@ ifpga_rawdev_destroy(struct rte_pci_device *pci_dev) int ret; struct rte_rawdev *rawdev; char name[RTE_RAWDEV_NAME_MAX_LEN]; - struct opae_adapter *adapter; - struct opae_manager *mgr; - struct ifpga_rawdev *dev; if (!pci_dev) { IFPGA_RAWDEV_PMD_ERR("Invalid pci_dev of the device!"); @@ -1651,19 +1657,6 @@ ifpga_rawdev_destroy(struct rte_pci_device *pci_dev) IFPGA_RAWDEV_PMD_ERR("Invalid device name (%s)", name); return -EINVAL; } - dev = ifpga_rawdev_get(rawdev); - - adapter = ifpga_rawdev_get_priv(rawdev); - if (!adapter) - return -ENODEV; - - mgr = opae_adapter_get_mgr(adapter); - if (!mgr) - return -ENODEV; - - if (ifpga_unregister_msix_irq(dev, IFPGA_FME_IRQ, 0, - fme_interrupt_handler, mgr) < 0) - return -EINVAL; /* rte_rawdev_close is called by pmd_release */ ret = rte_rawdev_pmd_release(rawdev);