From: Long Li <lon...@microsoft.com>
For vmbus channels without monitoring support, use kernel UIO interface
to indicate packet through interrupt page and UIO file handle.
Signed-off-by: Long Li <lon...@microsoft.com>
---
Change log:
v2: fixed compilation warnings
drivers/bus/vmbus/vmbus_channel.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/drivers/bus/vmbus/vmbus_channel.c
b/drivers/bus/vmbus/vmbus_channel.c
index bccef168d3..81e8096190 100644
--- a/drivers/bus/vmbus/vmbus_channel.c
+++ b/drivers/bus/vmbus/vmbus_channel.c
@@ -24,6 +24,19 @@ vmbus_sync_set_bit(volatile RTE_ATOMIC(uint32_t) *addr,
uint32_t mask)
rte_atomic_fetch_or_explicit(addr, mask, rte_memory_order_seq_cst);
}
+static inline void
+vmbus_send_interrupt(const struct rte_vmbus_device *dev, uint32_t relid)
+{
+ RTE_ATOMIC(uint32_t) *int_addr;
+ uint32_t int_mask;
+
+ int_addr = (RTE_ATOMIC(uint32_t)*) (dev->int_page + relid / 32);
+ int_mask = 1u << (relid % 32);
+ vmbus_sync_set_bit(int_addr, int_mask);
+
+ vmbus_uio_irq_control(dev, 1);
+}
+
static inline void
vmbus_set_monitor(const struct vmbus_channel *channel, uint32_t monitor_id)
{
@@ -39,10 +52,12 @@ vmbus_set_monitor(const struct vmbus_channel *channel,
uint32_t monitor_id)
}
static void
-vmbus_set_event(struct rte_vmbus_device *dev __rte_unused,
- const struct vmbus_channel *chan)
+vmbus_set_event(struct rte_vmbus_device *dev, const struct vmbus_channel *chan)
{
- vmbus_set_monitor(chan, chan->monitor_id);
+ if (chan->monitor_id != UINT8_MAX)
+ vmbus_set_monitor(chan, chan->monitor_id);
+ else
+ vmbus_send_interrupt(dev, chan->relid);
}
/*
--
2.34.1
