There are many duplicate code of creating and initializing rte_intr_handle.
Add a new mlx5_os API to do this, replace all PMD related code with this
API.

Signed-off-by: Spike Du <spi...@nvidia.com>
---
 drivers/common/mlx5/linux/mlx5_common_os.c   | 131 ++++++++++++++++++++++++++
 drivers/common/mlx5/linux/mlx5_common_os.h   |  11 +++
 drivers/common/mlx5/version.map              |   2 +
 drivers/common/mlx5/windows/mlx5_common_os.h |  24 +++++
 drivers/net/mlx5/linux/mlx5_ethdev_os.c      |  71 --------------
 drivers/net/mlx5/linux/mlx5_os.c             | 132 ++++++---------------------
 drivers/net/mlx5/linux/mlx5_socket.c         |  53 ++---------
 drivers/net/mlx5/mlx5.h                      |   2 -
 drivers/net/mlx5/mlx5_txpp.c                 |  28 ++----
 drivers/net/mlx5/windows/mlx5_ethdev_os.c    |  22 -----
 drivers/vdpa/mlx5/mlx5_vdpa_virtq.c          |  48 ++--------
 11 files changed, 217 insertions(+), 307 deletions(-)

diff --git a/drivers/common/mlx5/linux/mlx5_common_os.c 
b/drivers/common/mlx5/linux/mlx5_common_os.c
index d40cfd5..f10a981 100644
--- a/drivers/common/mlx5/linux/mlx5_common_os.c
+++ b/drivers/common/mlx5/linux/mlx5_common_os.c
@@ -11,6 +11,7 @@
 #endif
 #include <dirent.h>
 #include <net/if.h>
+#include <fcntl.h>
 
 #include <rte_errno.h>
 #include <rte_string_fns.h>
@@ -964,3 +965,133 @@
                claim_zero(mlx5_glue->dereg_mr(pmd_mr->obj));
        memset(pmd_mr, 0, sizeof(*pmd_mr));
 }
+
+/**
+ * Rte_intr_handle create and init helper.
+ *
+ * @param[in] mode
+ *   interrupt instance can be shared between primary and secondary
+ *   processes or not.
+ * @param[in] set_fd_nonblock
+ *   Whether to set fd to O_NONBLOCK.
+ * @param[in] fd
+ *   Fd to set in created intr_handle.
+ * @param[in] cb
+ *   Callback to register for intr_handle.
+ * @param[in] cb_arg
+ *   Callback argument for cb.
+ *
+ * @return
+ *  - Interrupt handle on success.
+ *  - NULL on failure, with rte_errno set.
+ */
+struct rte_intr_handle *
+mlx5_os_interrupt_handler_create(int mode, bool set_fd_nonblock, int fd,
+                                rte_intr_callback_fn cb, void *cb_arg)
+{
+       struct rte_intr_handle *tmp_intr_handle;
+       int ret, flags;
+
+       tmp_intr_handle = rte_intr_instance_alloc(mode);
+       if (!tmp_intr_handle) {
+               rte_errno = ENOMEM;
+               goto err;
+       }
+       if (set_fd_nonblock) {
+               flags = fcntl(fd, F_GETFL);
+               ret = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+               if (ret) {
+                       rte_errno = errno;
+                       goto err;
+               }
+       }
+       ret = rte_intr_fd_set(tmp_intr_handle, fd);
+       if (ret)
+               goto err;
+       ret = rte_intr_type_set(tmp_intr_handle, RTE_INTR_HANDLE_EXT);
+       if (ret)
+               goto err;
+       ret = rte_intr_callback_register(tmp_intr_handle, cb, cb_arg);
+       if (ret) {
+               rte_errno = -ret;
+               goto err;
+       }
+       return tmp_intr_handle;
+err:
+       if (tmp_intr_handle)
+               rte_intr_instance_free(tmp_intr_handle);
+       return NULL;
+}
+
+/* Safe unregistration for interrupt callback. */
+static void
+mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
+                             rte_intr_callback_fn cb_fn, void *cb_arg)
+{
+       uint64_t twait = 0;
+       uint64_t start = 0;
+
+       do {
+               int ret;
+
+               ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
+               if (ret >= 0)
+                       return;
+               if (ret != -EAGAIN) {
+                       DRV_LOG(INFO, "failed to unregister interrupt"
+                                     " handler (error: %d)", ret);
+                       MLX5_ASSERT(false);
+                       return;
+               }
+               if (twait) {
+                       struct timespec onems;
+
+                       /* Wait one millisecond and try again. */
+                       onems.tv_sec = 0;
+                       onems.tv_nsec = NS_PER_S / MS_PER_S;
+                       nanosleep(&onems, 0);
+                       /* Check whether one second elapsed. */
+                       if ((rte_get_timer_cycles() - start) <= twait)
+                               continue;
+               } else {
+                       /*
+                        * We get the amount of timer ticks for one second.
+                        * If this amount elapsed it means we spent one
+                        * second in waiting. This branch is executed once
+                        * on first iteration.
+                        */
+                       twait = rte_get_timer_hz();
+                       MLX5_ASSERT(twait);
+               }
+               /*
+                * Timeout elapsed, show message (once a second) and retry.
+                * We have no other acceptable option here, if we ignore
+                * the unregistering return code the handler will not
+                * be unregistered, fd will be closed and we may get the
+                * crush. Hanging and messaging in the loop seems not to be
+                * the worst choice.
+                */
+               DRV_LOG(INFO, "Retrying to unregister interrupt handler");
+               start = rte_get_timer_cycles();
+       } while (true);
+}
+
+/**
+ * Rte_intr_handle destroy helper.
+ *
+ * @param[in] intr_handle
+ *   Rte_intr_handle to destroy.
+ * @param[in] cb
+ *   Callback which is registered to intr_handle.
+ * @param[in] cb_arg
+ *   Callback argument for cb.
+ *
+ */
+void
+mlx5_os_interrupt_handler_destroy(struct rte_intr_handle *intr_handle,
+                                 rte_intr_callback_fn cb, void *cb_arg)
+{
+       if (rte_intr_fd_get(intr_handle) >= 0)
+               mlx5_intr_callback_unregister(intr_handle, cb, cb_arg);
+       rte_intr_instance_free(intr_handle);
+}
diff --git a/drivers/common/mlx5/linux/mlx5_common_os.h 
b/drivers/common/mlx5/linux/mlx5_common_os.h
index 27f1192..479bb3c 100644
--- a/drivers/common/mlx5/linux/mlx5_common_os.h
+++ b/drivers/common/mlx5/linux/mlx5_common_os.h
@@ -15,6 +15,7 @@
 #include <rte_log.h>
 #include <rte_kvargs.h>
 #include <rte_devargs.h>
+#include <rte_interrupts.h>
 
 #include "mlx5_autoconf.h"
 #include "mlx5_glue.h"
@@ -299,4 +300,14 @@
 int
 mlx5_get_device_guid(const struct rte_pci_addr *dev, uint8_t *guid, size_t 
len);
 
+__rte_internal
+struct rte_intr_handle *
+mlx5_os_interrupt_handler_create(int mode, bool set_fd_nonblock, int fd,
+                                rte_intr_callback_fn cb, void *cb_arg);
+
+__rte_internal
+void
+mlx5_os_interrupt_handler_destroy(struct rte_intr_handle *intr_handle,
+                                 rte_intr_callback_fn cb, void *cb_arg);
+
 #endif /* RTE_PMD_MLX5_COMMON_OS_H_ */
diff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map
index a23a30a..413dec1 100644
--- a/drivers/common/mlx5/version.map
+++ b/drivers/common/mlx5/version.map
@@ -153,5 +153,7 @@ INTERNAL {
        mlx5_mr_mempool2mr_bh;
        mlx5_mr_mempool_populate_cache;
 
+       mlx5_os_interrupt_handler_create; # WINDOWS_NO_EXPORT
+       mlx5_os_interrupt_handler_destroy; # WINDOWS_NO_EXPORT
        local: *;
 };
diff --git a/drivers/common/mlx5/windows/mlx5_common_os.h 
b/drivers/common/mlx5/windows/mlx5_common_os.h
index ee7973f..e9e9108 100644
--- a/drivers/common/mlx5/windows/mlx5_common_os.h
+++ b/drivers/common/mlx5/windows/mlx5_common_os.h
@@ -9,6 +9,7 @@
 #include <sys/types.h>
 
 #include <rte_errno.h>
+#include <rte_interrupts.h>
 
 #include "mlx5_autoconf.h"
 #include "mlx5_glue.h"
@@ -253,4 +254,27 @@
 __rte_internal
 int mlx5_os_umem_dereg(void *pumem);
 
+static inline struct rte_intr_handle *
+mlx5_os_interrupt_handler_create(int mode, bool set_fd_nonblock, int fd,
+                                rte_intr_callback_fn cb, void *cb_arg)
+{
+       (void)mode;
+       (void)set_fd_nonblock;
+       (void)fd;
+       (void)cb;
+       (void)cb_arg;
+       rte_errno = ENOTSUP;
+       return NULL;
+}
+
+static inline void
+mlx5_os_interrupt_handler_destroy(struct rte_intr_handle *intr_handle,
+                                 rte_intr_callback_fn cb, void *cb_arg)
+{
+       (void)intr_handle;
+       (void)cb;
+       (void)cb_arg;
+}
+
+
 #endif /* RTE_PMD_MLX5_COMMON_OS_H_ */
diff --git a/drivers/net/mlx5/linux/mlx5_ethdev_os.c 
b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
index 8d30ad0..760eaed 100644
--- a/drivers/net/mlx5/linux/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/linux/mlx5_ethdev_os.c
@@ -881,77 +881,6 @@ struct ethtool_link_settings {
        }
 }
 
-/*
- * Unregister callback handler safely. The handler may be active
- * while we are trying to unregister it, in this case code -EAGAIN
- * is returned by rte_intr_callback_unregister(). This routine checks
- * the return code and tries to unregister handler again.
- *
- * @param handle
- *   interrupt handle
- * @param cb_fn
- *   pointer to callback routine
- * @cb_arg
- *   opaque callback parameter
- */
-void
-mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
-                             rte_intr_callback_fn cb_fn, void *cb_arg)
-{
-       /*
-        * Try to reduce timeout management overhead by not calling
-        * the timer related routines on the first iteration. If the
-        * unregistering succeeds on first call there will be no
-        * timer calls at all.
-        */
-       uint64_t twait = 0;
-       uint64_t start = 0;
-
-       do {
-               int ret;
-
-               ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
-               if (ret >= 0)
-                       return;
-               if (ret != -EAGAIN) {
-                       DRV_LOG(INFO, "failed to unregister interrupt"
-                                     " handler (error: %d)", ret);
-                       MLX5_ASSERT(false);
-                       return;
-               }
-               if (twait) {
-                       struct timespec onems;
-
-                       /* Wait one millisecond and try again. */
-                       onems.tv_sec = 0;
-                       onems.tv_nsec = NS_PER_S / MS_PER_S;
-                       nanosleep(&onems, 0);
-                       /* Check whether one second elapsed. */
-                       if ((rte_get_timer_cycles() - start) <= twait)
-                               continue;
-               } else {
-                       /*
-                        * We get the amount of timer ticks for one second.
-                        * If this amount elapsed it means we spent one
-                        * second in waiting. This branch is executed once
-                        * on first iteration.
-                        */
-                       twait = rte_get_timer_hz();
-                       MLX5_ASSERT(twait);
-               }
-               /*
-                * Timeout elapsed, show message (once a second) and retry.
-                * We have no other acceptable option here, if we ignore
-                * the unregistering return code the handler will not
-                * be unregistered, fd will be closed and we may get the
-                * crush. Hanging and messaging in the loop seems not to be
-                * the worst choice.
-                */
-               DRV_LOG(INFO, "Retrying to unregister interrupt handler");
-               start = rte_get_timer_cycles();
-       } while (true);
-}
-
 /**
  * Handle DEVX interrupts from the NIC.
  * This function is probably called from the DPDK host thread.
diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index a821153..0741028 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -2494,40 +2494,6 @@
        mlx5_pmd_socket_uninit();
 }
 
-static int
-mlx5_os_dev_shared_handler_install_lsc(struct mlx5_dev_ctx_shared *sh)
-{
-       int nlsk_fd, flags, ret;
-
-       nlsk_fd = mlx5_nl_init(NETLINK_ROUTE, RTMGRP_LINK);
-       if (nlsk_fd < 0) {
-               DRV_LOG(ERR, "Failed to create a socket for Netlink events: %s",
-                       rte_strerror(rte_errno));
-               return -1;
-       }
-       flags = fcntl(nlsk_fd, F_GETFL);
-       ret = fcntl(nlsk_fd, F_SETFL, flags | O_NONBLOCK);
-       if (ret != 0) {
-               DRV_LOG(ERR, "Failed to make Netlink event socket non-blocking: 
%s",
-                       strerror(errno));
-               rte_errno = errno;
-               goto error;
-       }
-       rte_intr_type_set(sh->intr_handle_nl, RTE_INTR_HANDLE_EXT);
-       rte_intr_fd_set(sh->intr_handle_nl, nlsk_fd);
-       if (rte_intr_callback_register(sh->intr_handle_nl,
-                                      mlx5_dev_interrupt_handler_nl,
-                                      sh) != 0) {
-               DRV_LOG(ERR, "Failed to register Netlink events interrupt");
-               rte_intr_fd_set(sh->intr_handle_nl, -1);
-               goto error;
-       }
-       return 0;
-error:
-       close(nlsk_fd);
-       return -1;
-}
-
 /**
  * Install shared asynchronous device events handler.
  * This function is implemented to support event sharing
@@ -2539,76 +2505,47 @@
 void
 mlx5_os_dev_shared_handler_install(struct mlx5_dev_ctx_shared *sh)
 {
-       int ret;
-       int flags;
        struct ibv_context *ctx = sh->cdev->ctx;
+       int nlsk_fd;
 
-       sh->intr_handle = rte_intr_instance_alloc(RTE_INTR_INSTANCE_F_SHARED);
-       if (sh->intr_handle == NULL) {
-               DRV_LOG(ERR, "Fail to allocate intr_handle");
-               rte_errno = ENOMEM;
+       sh->intr_handle = mlx5_os_interrupt_handler_create
+               (RTE_INTR_INSTANCE_F_SHARED, true,
+                ctx->async_fd, mlx5_dev_interrupt_handler, sh);
+       if (!sh->intr_handle) {
+               DRV_LOG(ERR, "Failed to allocate intr_handle.");
                return;
        }
-       rte_intr_fd_set(sh->intr_handle, -1);
-
-       flags = fcntl(ctx->async_fd, F_GETFL);
-       ret = fcntl(ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
-       if (ret) {
-               DRV_LOG(INFO, "failed to change file descriptor async event"
-                       " queue");
-       } else {
-               rte_intr_fd_set(sh->intr_handle, ctx->async_fd);
-               rte_intr_type_set(sh->intr_handle, RTE_INTR_HANDLE_EXT);
-               if (rte_intr_callback_register(sh->intr_handle,
-                                       mlx5_dev_interrupt_handler, sh)) {
-                       DRV_LOG(INFO, "Fail to install the shared interrupt.");
-                       rte_intr_fd_set(sh->intr_handle, -1);
-               }
+       nlsk_fd = mlx5_nl_init(NETLINK_ROUTE, RTMGRP_LINK);
+       if (nlsk_fd < 0) {
+               DRV_LOG(ERR, "Failed to create a socket for Netlink events: %s",
+                       rte_strerror(rte_errno));
+               return;
        }
-       sh->intr_handle_nl = rte_intr_instance_alloc
-                                               (RTE_INTR_INSTANCE_F_SHARED);
+       sh->intr_handle_nl = mlx5_os_interrupt_handler_create
+               (RTE_INTR_INSTANCE_F_SHARED, true,
+                nlsk_fd, mlx5_dev_interrupt_handler_nl, sh);
        if (sh->intr_handle_nl == NULL) {
                DRV_LOG(ERR, "Fail to allocate intr_handle");
-               rte_errno = ENOMEM;
                return;
        }
-       rte_intr_fd_set(sh->intr_handle_nl, -1);
-       if (mlx5_os_dev_shared_handler_install_lsc(sh) < 0) {
-               DRV_LOG(INFO, "Fail to install the shared Netlink event 
handler.");
-               rte_intr_fd_set(sh->intr_handle_nl, -1);
-       }
        if (sh->cdev->config.devx) {
 #ifdef HAVE_IBV_DEVX_ASYNC
-               sh->intr_handle_devx =
-                       rte_intr_instance_alloc(RTE_INTR_INSTANCE_F_SHARED);
-               if (!sh->intr_handle_devx) {
-                       DRV_LOG(ERR, "Fail to allocate intr_handle");
-                       rte_errno = ENOMEM;
-                       return;
-               }
-               rte_intr_fd_set(sh->intr_handle_devx, -1);
+               struct mlx5dv_devx_cmd_comp *devx_comp;
+
                sh->devx_comp = (void *)mlx5_glue->devx_create_cmd_comp(ctx);
-               struct mlx5dv_devx_cmd_comp *devx_comp = sh->devx_comp;
+               devx_comp = sh->devx_comp;
                if (!devx_comp) {
                        DRV_LOG(INFO, "failed to allocate devx_comp.");
                        return;
                }
-               flags = fcntl(devx_comp->fd, F_GETFL);
-               ret = fcntl(devx_comp->fd, F_SETFL, flags | O_NONBLOCK);
-               if (ret) {
-                       DRV_LOG(INFO, "failed to change file descriptor"
-                               " devx comp");
+               sh->intr_handle_devx = mlx5_os_interrupt_handler_create
+                       (RTE_INTR_INSTANCE_F_SHARED, true,
+                        devx_comp->fd,
+                        mlx5_dev_interrupt_handler_devx, sh);
+               if (!sh->intr_handle_devx) {
+                       DRV_LOG(ERR, "Failed to allocate intr_handle.");
                        return;
                }
-               rte_intr_fd_set(sh->intr_handle_devx, devx_comp->fd);
-               rte_intr_type_set(sh->intr_handle_devx,
-                                        RTE_INTR_HANDLE_EXT);
-               if (rte_intr_callback_register(sh->intr_handle_devx,
-                                       mlx5_dev_interrupt_handler_devx, sh)) {
-                       DRV_LOG(INFO, "Fail to install the devx shared"
-                               " interrupt.");
-                       rte_intr_fd_set(sh->intr_handle_devx, -1);
-               }
 #endif /* HAVE_IBV_DEVX_ASYNC */
        }
 }
@@ -2624,24 +2561,13 @@
 void
 mlx5_os_dev_shared_handler_uninstall(struct mlx5_dev_ctx_shared *sh)
 {
-       int nlsk_fd;
-
-       if (rte_intr_fd_get(sh->intr_handle) >= 0)
-               mlx5_intr_callback_unregister(sh->intr_handle,
-                                             mlx5_dev_interrupt_handler, sh);
-       rte_intr_instance_free(sh->intr_handle);
-       nlsk_fd = rte_intr_fd_get(sh->intr_handle_nl);
-       if (nlsk_fd >= 0) {
-               mlx5_intr_callback_unregister
-                       (sh->intr_handle_nl, mlx5_dev_interrupt_handler_nl, sh);
-               close(nlsk_fd);
-       }
-       rte_intr_instance_free(sh->intr_handle_nl);
+       mlx5_os_interrupt_handler_destroy(sh->intr_handle,
+                                         mlx5_dev_interrupt_handler, sh);
+       mlx5_os_interrupt_handler_destroy(sh->intr_handle_nl,
+                                         mlx5_dev_interrupt_handler_nl, sh);
 #ifdef HAVE_IBV_DEVX_ASYNC
-       if (rte_intr_fd_get(sh->intr_handle_devx) >= 0)
-               rte_intr_callback_unregister(sh->intr_handle_devx,
-                                 mlx5_dev_interrupt_handler_devx, sh);
-       rte_intr_instance_free(sh->intr_handle_devx);
+       mlx5_os_interrupt_handler_destroy(sh->intr_handle_devx,
+                                         mlx5_dev_interrupt_handler_devx, sh);
        if (sh->devx_comp)
                mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
 #endif
diff --git a/drivers/net/mlx5/linux/mlx5_socket.c 
b/drivers/net/mlx5/linux/mlx5_socket.c
index 4882e5f..0e01aff 100644
--- a/drivers/net/mlx5/linux/mlx5_socket.c
+++ b/drivers/net/mlx5/linux/mlx5_socket.c
@@ -134,51 +134,6 @@
 }
 
 /**
- * Install interrupt handler.
- *
- * @param dev
- *   Pointer to Ethernet device.
- * @return
- *   0 on success, a negative errno value otherwise.
- */
-static int
-mlx5_pmd_interrupt_handler_install(void)
-{
-       MLX5_ASSERT(server_socket != -1);
-
-       server_intr_handle =
-               rte_intr_instance_alloc(RTE_INTR_INSTANCE_F_PRIVATE);
-       if (server_intr_handle == NULL) {
-               DRV_LOG(ERR, "Fail to allocate intr_handle");
-               return -ENOMEM;
-       }
-       if (rte_intr_fd_set(server_intr_handle, server_socket))
-               return -rte_errno;
-
-       if (rte_intr_type_set(server_intr_handle, RTE_INTR_HANDLE_EXT))
-               return -rte_errno;
-
-       return rte_intr_callback_register(server_intr_handle,
-                                         mlx5_pmd_socket_handle, NULL);
-}
-
-/**
- * Uninstall interrupt handler.
- */
-static void
-mlx5_pmd_interrupt_handler_uninstall(void)
-{
-       if (server_socket != -1) {
-               mlx5_intr_callback_unregister(server_intr_handle,
-                                             mlx5_pmd_socket_handle,
-                                             NULL);
-       }
-       rte_intr_fd_set(server_intr_handle, 0);
-       rte_intr_type_set(server_intr_handle, RTE_INTR_HANDLE_UNKNOWN);
-       rte_intr_instance_free(server_intr_handle);
-}
-
-/**
  * Initialise the socket to communicate with external tools.
  *
  * @return
@@ -224,7 +179,10 @@
                        strerror(errno));
                goto remove;
        }
-       if (mlx5_pmd_interrupt_handler_install()) {
+       server_intr_handle = mlx5_os_interrupt_handler_create
+               (RTE_INTR_INSTANCE_F_PRIVATE, false,
+                server_socket, mlx5_pmd_socket_handle, NULL);
+       if (server_intr_handle == NULL) {
                DRV_LOG(WARNING, "cannot register interrupt handler for mlx5 
socket: %s",
                        strerror(errno));
                goto remove;
@@ -248,7 +206,8 @@
 {
        if (server_socket == -1)
                return;
-       mlx5_pmd_interrupt_handler_uninstall();
+       mlx5_os_interrupt_handler_destroy(server_intr_handle,
+                                         mlx5_pmd_socket_handle, NULL);
        claim_zero(close(server_socket));
        server_socket = -1;
        MKSTR(path, MLX5_SOCKET_PATH, getpid());
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 305edff..7ebb2cc 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -1682,8 +1682,6 @@ int mlx5_sysfs_switch_info(unsigned int ifindex,
                           struct mlx5_switch_info *info);
 void mlx5_translate_port_name(const char *port_name_in,
                              struct mlx5_switch_info *port_info_out);
-void mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
-                                  rte_intr_callback_fn cb_fn, void *cb_arg);
 int mlx5_sysfs_bond_info(unsigned int pf_ifindex, unsigned int *ifindex,
                         char *ifname);
 int mlx5_get_module_info(struct rte_eth_dev *dev,
diff --git a/drivers/net/mlx5/mlx5_txpp.c b/drivers/net/mlx5/mlx5_txpp.c
index fe74317..f853a67 100644
--- a/drivers/net/mlx5/mlx5_txpp.c
+++ b/drivers/net/mlx5/mlx5_txpp.c
@@ -741,11 +741,8 @@
 static void
 mlx5_txpp_stop_service(struct mlx5_dev_ctx_shared *sh)
 {
-       if (!rte_intr_fd_get(sh->txpp.intr_handle))
-               return;
-       mlx5_intr_callback_unregister(sh->txpp.intr_handle,
-                                     mlx5_txpp_interrupt_handler, sh);
-       rte_intr_instance_free(sh->txpp.intr_handle);
+       mlx5_os_interrupt_handler_destroy(sh->txpp.intr_handle,
+                                         mlx5_txpp_interrupt_handler, sh);
 }
 
 /* Attach interrupt handler and fires first request to Rearm Queue. */
@@ -769,23 +766,12 @@
                rte_errno = errno;
                return -rte_errno;
        }
-       sh->txpp.intr_handle =
-                       rte_intr_instance_alloc(RTE_INTR_INSTANCE_F_SHARED);
-       if (sh->txpp.intr_handle == NULL) {
-               DRV_LOG(ERR, "Fail to allocate intr_handle");
-               return -ENOMEM;
-       }
        fd = mlx5_os_get_devx_channel_fd(sh->txpp.echan);
-       if (rte_intr_fd_set(sh->txpp.intr_handle, fd))
-               return -rte_errno;
-
-       if (rte_intr_type_set(sh->txpp.intr_handle, RTE_INTR_HANDLE_EXT))
-               return -rte_errno;
-
-       if (rte_intr_callback_register(sh->txpp.intr_handle,
-                                      mlx5_txpp_interrupt_handler, sh)) {
-               rte_intr_fd_set(sh->txpp.intr_handle, 0);
-               DRV_LOG(ERR, "Failed to register CQE interrupt %d.", rte_errno);
+       sh->txpp.intr_handle = mlx5_os_interrupt_handler_create
+               (RTE_INTR_INSTANCE_F_SHARED, false,
+                fd, mlx5_txpp_interrupt_handler, sh);
+       if (!sh->txpp.intr_handle) {
+               DRV_LOG(ERR, "Fail to allocate intr_handle");
                return -rte_errno;
        }
        /* Subscribe CQ event to the event channel controlled by the driver. */
diff --git a/drivers/net/mlx5/windows/mlx5_ethdev_os.c 
b/drivers/net/mlx5/windows/mlx5_ethdev_os.c
index f975265..88d8213 100644
--- a/drivers/net/mlx5/windows/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/windows/mlx5_ethdev_os.c
@@ -140,28 +140,6 @@
        return 0;
 }
 
-/*
- * Unregister callback handler safely. The handler may be active
- * while we are trying to unregister it, in this case code -EAGAIN
- * is returned by rte_intr_callback_unregister(). This routine checks
- * the return code and tries to unregister handler again.
- *
- * @param handle
- *   interrupt handle
- * @param cb_fn
- *   pointer to callback routine
- * @cb_arg
- *   opaque callback parameter
- */
-void
-mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
-                             rte_intr_callback_fn cb_fn, void *cb_arg)
-{
-       RTE_SET_USED(handle);
-       RTE_SET_USED(cb_fn);
-       RTE_SET_USED(cb_arg);
-}
-
 /**
  * DPDK callback to get flow control status.
  *
diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c 
b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
index e025be4..fd447cc 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c
@@ -93,22 +93,10 @@
 static int
 mlx5_vdpa_virtq_unset(struct mlx5_vdpa_virtq *virtq)
 {
-       int ret = -EAGAIN;
-
-       if (rte_intr_fd_get(virtq->intr_handle) >= 0) {
-               while (ret == -EAGAIN) {
-                       ret = rte_intr_callback_unregister(virtq->intr_handle,
-                                       mlx5_vdpa_virtq_kick_handler, virtq);
-                       if (ret == -EAGAIN) {
-                               DRV_LOG(DEBUG, "Try again to unregister fd %d 
of virtq %hu interrupt",
-                                       rte_intr_fd_get(virtq->intr_handle),
-                                       virtq->index);
-                               usleep(MLX5_VDPA_INTR_RETRIES_USEC);
-                       }
-               }
-               rte_intr_fd_set(virtq->intr_handle, -1);
-       }
-       rte_intr_instance_free(virtq->intr_handle);
+       int ret;
+
+       mlx5_os_interrupt_handler_destroy(virtq->intr_handle,
+                                         mlx5_vdpa_virtq_kick_handler, virtq);
        if (virtq->virtq) {
                ret = mlx5_vdpa_virtq_stop(virtq->priv, virtq->index);
                if (ret)
@@ -365,35 +353,13 @@
        virtq->priv = priv;
        rte_write32(virtq->index, priv->virtq_db_addr);
        /* Setup doorbell mapping. */
-       virtq->intr_handle =
-               rte_intr_instance_alloc(RTE_INTR_INSTANCE_F_SHARED);
+       virtq->intr_handle = mlx5_os_interrupt_handler_create(
+                                 RTE_INTR_INSTANCE_F_SHARED, false,
+                                 vq.kickfd, mlx5_vdpa_virtq_kick_handler, 
virtq);
        if (virtq->intr_handle == NULL) {
                DRV_LOG(ERR, "Fail to allocate intr_handle");
                goto error;
        }
-
-       if (rte_intr_fd_set(virtq->intr_handle, vq.kickfd))
-               goto error;
-
-       if (rte_intr_fd_get(virtq->intr_handle) == -1) {
-               DRV_LOG(WARNING, "Virtq %d kickfd is invalid.", index);
-       } else {
-               if (rte_intr_type_set(virtq->intr_handle, RTE_INTR_HANDLE_EXT))
-                       goto error;
-
-               if (rte_intr_callback_register(virtq->intr_handle,
-                                              mlx5_vdpa_virtq_kick_handler,
-                                              virtq)) {
-                       rte_intr_fd_set(virtq->intr_handle, -1);
-                       DRV_LOG(ERR, "Failed to register virtq %d interrupt.",
-                               index);
-                       goto error;
-               } else {
-                       DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
-                               rte_intr_fd_get(virtq->intr_handle),
-                               index);
-               }
-       }
        /* Subscribe virtq error event. */
        virtq->version++;
        cookie = ((uint64_t)virtq->version << 32) + index;
-- 
1.8.3.1

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