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authorDamjan Marion <damarion@cisco.com>2017-04-05 18:15:45 +0200
committerNeale Ranns <nranns@cisco.com>2017-04-10 12:47:33 +0000
commit153646e89c3be70c68348bdd497f8edd2b212a9c (patch)
tree201d82257d82b166fc3003b7f201966b465dd17a /src/vnet/devices/devices.h
parentc3827738daf0955445212ad622e7259ad9480141 (diff)
Common device-input interrupt infra
Change-Id: I23b588eb56a3f5690158449a1f9bc8053cd3d251 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vnet/devices/devices.h')
-rw-r--r--src/vnet/devices/devices.h60
1 files changed, 50 insertions, 10 deletions
diff --git a/src/vnet/devices/devices.h b/src/vnet/devices/devices.h
index 966f8302230..baf03b7cd2a 100644
--- a/src/vnet/devices/devices.h
+++ b/src/vnet/devices/devices.h
@@ -55,16 +55,26 @@ typedef struct
uword next_worker_thread_index;
} vnet_device_main_t;
+typedef enum
+{
+ VNET_DEVICE_INPUT_MODE_POLLING = 0,
+ VNET_DEVICE_INPUT_MODE_INTERRUPT,
+ VNET_DEVICE_INPUT_N_MODES,
+} vnet_device_input_mode_t;
+
typedef struct
{
u32 hw_if_index;
u32 dev_instance;
u16 queue_id;
+ vnet_device_input_mode_t mode;
+ uword interrupt_pending;
} vnet_device_and_queue_t;
typedef struct
{
vnet_device_and_queue_t *devices_and_queues;
+ vlib_node_state_t enabled_node_state;
} vnet_device_input_runtime_t;
extern vnet_device_main_t vnet_device_main;
@@ -72,15 +82,22 @@ extern vlib_node_registration_t device_input_node;
extern const u32 device_input_next_node_advance[];
static inline void
-vnet_set_device_input_node (u32 hw_if_index, u32 node_index)
+vnet_set_device_input_node (vnet_main_t * vnm, u32 hw_if_index,
+ u32 node_index)
{
- vnet_main_t *vnm = vnet_get_main ();
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
hw->input_node_index = node_index;
}
-void vnet_device_input_assign_thread (u32 hw_if_index, u16 queue_id,
- uword thread_index);
+void vnet_device_input_assign_thread (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id, uword thread_index);
+int vnet_device_input_unassign_thread (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id, uword thread_index);
+int vnet_device_input_set_mode (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id, vnet_device_input_mode_t mode);
+int vnet_device_input_get_mode (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id,
+ vnet_device_input_mode_t * mode);
static inline u64
vnet_get_aggregate_rx_packets (void)
@@ -111,18 +128,41 @@ vnet_get_device_and_queue (vlib_main_t * vm, vlib_node_runtime_t * node)
return rt->devices_and_queues;
}
+static_always_inline uword
+vnet_get_device_input_thread_index (vnet_main_t * vnm, u32 hw_if_index,
+ u16 queue_id)
+{
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ ASSERT (queue_id < vec_len (hw->input_node_thread_index_by_queue));
+ return hw->input_node_thread_index_by_queue[queue_id];
+}
+
static_always_inline void
vnet_device_input_set_interrupt_pending (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id)
{
- vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
-
- ASSERT (queue_id < vec_len (hw->input_node_thread_index_by_queue));
- u32 thread_index = hw->input_node_thread_index_by_queue[queue_id];
- vlib_node_set_interrupt_pending (vlib_mains[thread_index],
- hw->input_node_index);
+ vlib_main_t *vm;
+ vnet_hw_interface_t *hw;
+ vnet_device_input_runtime_t *rt;
+ vnet_device_and_queue_t *dq;
+ uword idx;
+
+ hw = vnet_get_hw_interface (vnm, hw_if_index);
+ idx = vnet_get_device_input_thread_index (vnm, hw_if_index, queue_id);
+ vm = vlib_mains[idx];
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+ idx = hw->dq_runtime_index_by_queue[queue_id];
+ dq = vec_elt_at_index (rt->devices_and_queues, idx);
+ dq->interrupt_pending = 1;
+
+ vlib_node_set_interrupt_pending (vm, hw->input_node_index);
}
+#define foreach_device_and_queue(var,vec) \
+ for (var = (vec); var < vec_end (vec); var++) \
+ if (clib_smp_swap (&((var)->interrupt_pending), 0) || \
+ var->mode == VNET_DEVICE_INPUT_MODE_POLLING)
+
#endif /* included_vnet_vnet_device_h */
/*