Remove the inappropriate modification on get_max_intr
field that keep the intr_source read only.
Signed-off-by: Qi Zhang <qi.z.zh...@intel.com>
---
v4:
- Add back this patch to make patch set complete though it already be applied.
v2:
- Seperate patch 1 of v1 into 2 patches.(part 1)
lib/librte_eal/linuxapp/eal/eal_interrupts.c | 36 ++++------------------------
1 file changed, 4 insertions(+), 32 deletions(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
index 029a147..1716d68 100644
--- a/lib/librte_eal/linuxapp/eal/eal_interrupts.c
+++ b/lib/librte_eal/linuxapp/eal/eal_interrupts.c
@@ -278,29 +278,6 @@ vfio_disable_msi(const struct rte_intr_handle
*intr_handle) {
return ret;
}
-static int
-get_max_intr(const struct rte_intr_handle *intr_handle)
-{
- struct rte_intr_source *src;
-
- TAILQ_FOREACH(src, &intr_sources, next) {
- if (src->intr_handle.fd != intr_handle->fd)
- continue;
-
- if (src->intr_handle.max_intr < intr_handle->max_intr)
- src->intr_handle.max_intr = intr_handle->max_intr;
- if (!src->intr_handle.max_intr)
- src->intr_handle.max_intr = 1;
- else if (src->intr_handle.max_intr > RTE_MAX_RXTX_INTR_VEC_ID)
- src->intr_handle.max_intr
- = RTE_MAX_RXTX_INTR_VEC_ID + 1;
-
- return src->intr_handle.max_intr;
- }
-
- return -1;
-}
-
/* enable MSI-X interrupts */
static int
vfio_enable_msix(const struct rte_intr_handle *intr_handle) {
@@ -313,15 +290,10 @@ vfio_enable_msix(const struct rte_intr_handle
*intr_handle) {
irq_set = (struct vfio_irq_set *) irq_set_buf;
irq_set->argsz = len;
-
- ret = get_max_intr(intr_handle);
- if (ret < 0) {
- RTE_LOG(ERR, EAL, "Invalid number of MSI-X irqs for fd %d\n",
- intr_handle->fd);
- return -1;
- }
-
- irq_set->count = ret;
+ /* 0 < irq_set->count < RTE_MAX_RXTX_INTR_VEC_ID + 1 */
+ irq_set->count = intr_handle->max_intr ?
+ (intr_handle->max_intr > RTE_MAX_RXTX_INTR_VEC_ID + 1 ?
+ RTE_MAX_RXTX_INTR_VEC_ID + 1 : intr_handle->max_intr) : 1;
irq_set->flags = VFIO_IRQ_SET_DATA_EVENTFD |
VFIO_IRQ_SET_ACTION_TRIGGER;
irq_set->index = VFIO_PCI_MSIX_IRQ_INDEX;
irq_set->start = 0;
--
2.7.4
