Signed-off-by: Jianfeng Tan <jianfeng....@intel.com>
---
lib/librte_eal/linuxapp/eal/eal_interrupts.c | 32 ++++++++++++++++++++--
lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 2 ++
.../linuxapp/eal/include/exec-env/rte_interrupts.h | 5 ++--
3 files changed, 34 insertions(+), 5 deletions(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
index b5b3f2b..afe6ee6 100644
--- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
+++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
@@ -46,6 +46,7 @@
#include <sys/ioctl.h>
#include <sys/eventfd.h>
#include <assert.h>
+#include <stdbool.h>
#include <rte_common.h>
#include <rte_interrupts.h>
@@ -581,6 +582,9 @@ rte_intr_callback_unregister(const struct rte_intr_handle
*intr_handle,
int
rte_intr_enable(const struct rte_intr_handle *intr_handle)
{
+ if (intr_handle && intr_handle->type == RTE_INTR_HANDLE_VDEV)
+ return 0;
+
if (!intr_handle || intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0)
return -1;
@@ -625,6 +629,9 @@ rte_intr_enable(const struct rte_intr_handle *intr_handle)
int
rte_intr_disable(const struct rte_intr_handle *intr_handle)
{
+ if (intr_handle && intr_handle->type == RTE_INTR_HANDLE_VDEV)
+ return 0;
+
if (!intr_handle || intr_handle->fd < 0 || intr_handle->uio_cfg_fd < 0)
return -1;
@@ -669,6 +676,7 @@ rte_intr_disable(const struct rte_intr_handle *intr_handle)
static int
eal_intr_process_interrupts(struct epoll_event *events, int nfds)
{
+ bool call;
int n, bytes_read;
struct rte_intr_source *src;
struct rte_intr_callback *cb;
@@ -701,6 +709,8 @@ eal_intr_process_interrupts(struct epoll_event *events, int
nfds)
src->active = 1;
rte_spinlock_unlock(&intr_lock);
+ call = false;
+
/* set the length to be read dor different handle type */
switch (src->intr_handle.type) {
case RTE_INTR_HANDLE_UIO:
@@ -717,13 +727,18 @@ eal_intr_process_interrupts(struct epoll_event *events,
int nfds)
bytes_read = sizeof(buf.vfio_intr_count);
break;
#endif
+ case RTE_INTR_HANDLE_VDEV:
case RTE_INTR_HANDLE_EXT:
+ bytes_read = 0;
+ call = true;
+ break;
+
default:
bytes_read = 1;
break;
}
- if (src->intr_handle.type != RTE_INTR_HANDLE_EXT) {
+ if (bytes_read > 0) {
/**
* read out to clear the ready-to-be-read flag
* for epoll_wait.
@@ -740,12 +755,14 @@ eal_intr_process_interrupts(struct epoll_event *events,
int nfds)
} else if (bytes_read == 0)
RTE_LOG(ERR, EAL, "Read nothing from file "
"descriptor %d\n", events[n].data.fd);
+ else
+ call = true;
}
/* grab a lock, again to call callbacks and update status. */
rte_spinlock_lock(&intr_lock);
- if (bytes_read > 0) {
+ if (call) {
/* Finally, call all callbacks. */
TAILQ_FOREACH(cb, &src->callbacks, next) {
@@ -856,7 +873,7 @@ eal_intr_thread_main(__rte_unused void *arg)
TAILQ_FOREACH(src, &intr_sources, next) {
if (src->callbacks.tqh_first == NULL)
continue; /* skip those with no callbacks */
- ev.events = EPOLLIN | EPOLLPRI;
+ ev.events = EPOLLIN | EPOLLPRI | EPOLLRDHUP | EPOLLHUP;
ev.data.fd = src->intr_handle.fd;
/**
@@ -937,6 +954,12 @@ eal_intr_proc_rxtx_intr(int fd, const struct
rte_intr_handle *intr_handle)
bytes_read = sizeof(buf.vfio_intr_count);
break;
#endif
+ case RTE_INTR_HANDLE_VDEV:
+ /* for vdev, fd points to:
+ * a. eventfd which does not need to read out;
+ * b. datapath fd which needs PMD to read out.
+ */
+ return;
default:
bytes_read = 1;
RTE_LOG(INFO, EAL, "unexpected intr type\n");
@@ -1242,5 +1265,8 @@ rte_intr_cap_multiple(struct rte_intr_handle *intr_handle)
if (intr_handle->type == RTE_INTR_HANDLE_VFIO_MSIX)
return 1;
+ if (intr_handle->type == RTE_INTR_HANDLE_VDEV)
+ return 1;
+
return 0;
}
diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
index 5f478c5..5486346 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
@@ -268,6 +268,8 @@ pci_vfio_setup_interrupts(struct rte_pci_device *dev, int
vfio_dev_fd)
return -1;
}
+ printf("intr_handle.fd = %d\n", fd);
+
dev->intr_handle.fd = fd;
dev->intr_handle.vfio_dev_fd = vfio_dev_fd;
diff --git a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
index d459bf4..b8ee1de 100644
--- a/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
+++ b/lib/librte_eal/linuxapp/eal/include/exec-env/rte_interrupts.h
@@ -49,8 +49,9 @@ enum rte_intr_handle_type {
RTE_INTR_HANDLE_VFIO_LEGACY, /**< vfio device handle (legacy) */
RTE_INTR_HANDLE_VFIO_MSI, /**< vfio device handle (MSI) */
RTE_INTR_HANDLE_VFIO_MSIX, /**< vfio device handle (MSIX) */
- RTE_INTR_HANDLE_ALARM, /**< alarm handle */
- RTE_INTR_HANDLE_EXT, /**< external handler */
+ RTE_INTR_HANDLE_ALARM, /**< alarm handle */
+ RTE_INTR_HANDLE_EXT, /**< external handler */
+ RTE_INTR_HANDLE_VDEV, /**< virtual device */
RTE_INTR_HANDLE_MAX
};
--
2.7.4
