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-rw-r--r--src/vlib/node_funcs.h14
-rw-r--r--src/vnet/devices/af_packet/af_packet.c7
-rw-r--r--src/vnet/devices/af_packet/node.c2
-rw-r--r--src/vnet/devices/devices.c135
-rw-r--r--src/vnet/devices/devices.h60
-rw-r--r--src/vnet/interface.c2
-rw-r--r--src/vnet/interface.h3
7 files changed, 194 insertions, 29 deletions
diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h
index 54e36874..4d7cc192 100644
--- a/src/vlib/node_funcs.h
+++ b/src/vlib/node_funcs.h
@@ -177,6 +177,20 @@ vlib_node_set_state (vlib_main_t * vm, u32 node_index,
r->state = new_state;
}
+/** \brief Get node dispatch state.
+ @param vm vlib_main_t pointer, varies by thread
+ @param node_index index of the node
+ @return state for node, see vlib_node_state_t
+*/
+always_inline vlib_node_state_t
+vlib_node_get_state (vlib_main_t * vm, u32 node_index)
+{
+ vlib_node_main_t *nm = &vm->node_main;
+ vlib_node_t *n;
+ n = vec_elt (nm->nodes, node_index);
+ return n->state;
+}
+
always_inline void
vlib_node_set_interrupt_pending (vlib_main_t * vm, u32 node_index)
{
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c
index 20285107..7464d4e6 100644
--- a/src/vnet/devices/af_packet/af_packet.c
+++ b/src/vnet/devices/af_packet/af_packet.c
@@ -270,9 +270,12 @@ af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index);
apif->sw_if_index = sw->sw_if_index;
- vnet_set_device_input_node (apif->hw_if_index, af_packet_input_node.index);
- vnet_device_input_assign_thread (apif->hw_if_index, 0, /* queue */
+ vnet_set_device_input_node (vnm, apif->hw_if_index,
+ af_packet_input_node.index);
+ vnet_device_input_assign_thread (vnm, apif->hw_if_index, 0, /* queue */
~0 /* any cpu */ );
+ vnet_device_input_set_mode (vnm, apif->hw_if_index, 0,
+ VNET_DEVICE_INPUT_MODE_INTERRUPT);
vnet_hw_interface_set_flags (vnm, apif->hw_if_index,
VNET_HW_INTERFACE_FLAG_LINK_UP);
diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c
index 76980102..d3af41b5 100644
--- a/src/vnet/devices/af_packet/node.c
+++ b/src/vnet/devices/af_packet/node.c
@@ -251,7 +251,7 @@ af_packet_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
vnet_device_input_runtime_t *rt = (void *) node->runtime_data;
vnet_device_and_queue_t *dq;
- vec_foreach (dq, rt->devices_and_queues)
+ foreach_device_and_queue (dq, rt->devices_and_queues)
{
af_packet_if_t *apif;
apif = vec_elt_at_index (apm->interfaces, dq->dev_instance);
diff --git a/src/vnet/devices/devices.c b/src/vnet/devices/devices.c
index 5e5e812c..c8a95087 100644
--- a/src/vnet/devices/devices.c
+++ b/src/vnet/devices/devices.c
@@ -102,11 +102,26 @@ vnet_device_queue_sort (void *a1, void *a2)
return 0;
}
+static void
+vnet_device_queue_update (vnet_main_t * vnm, vnet_device_input_runtime_t * rt)
+{
+ vnet_device_and_queue_t *dq;
+ vnet_hw_interface_t *hw;
+
+ vec_sort_with_function (rt->devices_and_queues, vnet_device_queue_sort);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ {
+ hw = vnet_get_hw_interface (vnm, dq->hw_if_index);
+ vec_validate (hw->dq_runtime_index_by_queue, dq->queue_id);
+ hw->dq_runtime_index_by_queue[dq->queue_id] = dq - rt->devices_and_queues;
+ }
+}
+
void
-vnet_device_input_assign_thread (u32 hw_if_index,
+vnet_device_input_assign_thread (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id, uword thread_index)
{
- vnet_main_t *vnm = vnet_get_main ();
vnet_device_main_t *vdm = &vnet_device_main;
vlib_main_t *vm;
vnet_device_input_runtime_t *rt;
@@ -135,16 +150,17 @@ vnet_device_input_assign_thread (u32 hw_if_index,
dq->dev_instance = hw->dev_instance;
dq->queue_id = queue_id;
- vec_sort_with_function (rt->devices_and_queues, vnet_device_queue_sort);
+ vnet_device_queue_update (vnm, rt);
vec_validate (hw->input_node_thread_index_by_queue, queue_id);
hw->input_node_thread_index_by_queue[queue_id] = thread_index;
+ vlib_node_set_state (vm, hw->input_node_index, rt->enabled_node_state);
}
-static int
-vnet_device_input_unassign_thread (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)
{
- vnet_main_t *vnm = vnet_get_main ();
+ vlib_main_t *vm;
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
vnet_device_input_runtime_t *rt;
vnet_device_and_queue_t *dq;
@@ -161,9 +177,9 @@ vnet_device_input_unassign_thread (u32 hw_if_index, u16 queue_id,
if (old_thread_index == thread_index)
return 0;
- rt =
- vlib_node_get_runtime_data (vlib_mains[old_thread_index],
- hw->input_node_index);
+ vm = vlib_mains[old_thread_index];
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
vec_foreach (dq, rt->devices_and_queues)
if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
@@ -175,11 +191,89 @@ vnet_device_input_unassign_thread (u32 hw_if_index, u16 queue_id,
return VNET_API_ERROR_INVALID_INTERFACE;
deleted:
- vec_sort_with_function (rt->devices_and_queues, vnet_device_queue_sort);
+
+ vnet_device_queue_update (vnm, rt);
+
+ if (vec_len (rt->devices_and_queues) == 0)
+ vlib_node_set_state (vm, hw->input_node_index, VLIB_NODE_STATE_DISABLED);
+
+ return 0;
+}
+
+
+int
+vnet_device_input_set_mode (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id,
+ vnet_device_input_mode_t mode)
+{
+ vlib_main_t *vm;
+ uword thread_index;
+ vnet_device_and_queue_t *dq;
+ vlib_node_state_t enabled_node_state;
+ ASSERT (mode < VNET_DEVICE_INPUT_N_MODES);
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ vnet_device_input_runtime_t *rt;
+ int is_polling = 0;
+
+ if (hw->input_node_thread_index_by_queue == 0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ thread_index = hw->input_node_thread_index_by_queue[queue_id];
+ vm = vlib_mains[thread_index];
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ {
+ if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
+ dq->mode = mode;
+ if (dq->mode == VNET_DEVICE_INPUT_MODE_POLLING)
+ is_polling = 1;
+ }
+
+ if (is_polling)
+ enabled_node_state = VLIB_NODE_STATE_POLLING;
+ else
+ enabled_node_state = VLIB_NODE_STATE_INTERRUPT;
+
+ if (rt->enabled_node_state != enabled_node_state)
+ {
+ rt->enabled_node_state = enabled_node_state;
+ if (vlib_node_get_state (vm, hw->input_node_index) !=
+ VLIB_NODE_STATE_DISABLED)
+ vlib_node_set_state (vm, hw->input_node_index, enabled_node_state);
+ }
return 0;
}
+int
+vnet_device_input_get_mode (vnet_main_t * vnm, u32 hw_if_index, u16 queue_id,
+ vnet_device_input_mode_t * mode)
+{
+ vlib_main_t *vm;
+ uword thread_index;
+ vnet_device_and_queue_t *dq;
+ vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
+ vnet_device_input_runtime_t *rt;
+
+ if (hw->input_node_thread_index_by_queue == 0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ thread_index = hw->input_node_thread_index_by_queue[queue_id];
+ vm = vlib_mains[thread_index];
+
+ rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
+
+ vec_foreach (dq, rt->devices_and_queues)
+ if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
+ {
+ *mode = dq->mode;
+ return 0;
+ }
+
+ return VNET_API_ERROR_INVALID_INTERFACE;
+}
+
static clib_error_t *
show_device_placement_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
@@ -203,9 +297,11 @@ show_device_placement_fn (vlib_main_t * vm, unformat_input_t * input,
vec_foreach (dq, rt->devices_and_queues)
{
- s = format (s, " %U queue %u\n",
+ s = format (s, " %U queue %u (%s)\n",
format_vnet_sw_if_index_name, vnm, dq->hw_if_index,
- dq->queue_id);
+ dq->queue_id,
+ dq->mode == VNET_DEVICE_INPUT_MODE_POLLING ?
+ "polling" : "interrupt");
}
}));
if (vec_len (s) > 0)
@@ -238,6 +334,7 @@ set_device_placement (vlib_main_t * vm, unformat_input_t * input,
unformat_input_t _line_input, *line_input = &_line_input;
vnet_main_t *vnm = vnet_get_main ();
vnet_device_main_t *vdm = &vnet_device_main;
+ vnet_device_input_mode_t mode;
u32 hw_if_index = (u32) ~ 0;
u32 queue_id = (u32) 0;
u32 thread_index = (u32) ~ 0;
@@ -275,13 +372,19 @@ set_device_placement (vlib_main_t * vm, unformat_input_t * input,
return clib_error_return (0,
"please specify valid worker thread or main");
- rv =
- vnet_device_input_unassign_thread (hw_if_index, queue_id, thread_index);
+ rv = vnet_device_input_get_mode (vnm, hw_if_index, queue_id, &mode);
+
+ if (rv)
+ return clib_error_return (0, "not found");
+
+ rv = vnet_device_input_unassign_thread (vnm, hw_if_index, queue_id,
+ thread_index);
if (rv)
return clib_error_return (0, "not found");
- vnet_device_input_assign_thread (hw_if_index, queue_id, thread_index);
+ vnet_device_input_assign_thread (vnm, hw_if_index, queue_id, thread_index);
+ vnet_device_input_set_mode (vnm, hw_if_index, queue_id, mode);
return 0;
}
diff --git a/src/vnet/devices/devices.h b/src/vnet/devices/devices.h
index 966f8302..baf03b7c 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 */
/*
diff --git a/src/vnet/interface.c b/src/vnet/interface.c
index 45417b2f..24f216f6 100644
--- a/src/vnet/interface.c
+++ b/src/vnet/interface.c
@@ -919,6 +919,8 @@ vnet_delete_hw_interface (vnet_main_t * vnm, u32 hw_if_index)
hash_unset_mem (im->hw_interface_by_name, hw->name);
vec_free (hw->name);
+ vec_free (hw->input_node_thread_index_by_queue);
+ vec_free (hw->dq_runtime_index_by_queue);
pool_put (im->hw_interfaces, hw);
}
diff --git a/src/vnet/interface.h b/src/vnet/interface.h
index 08f08b10..9c223040 100644
--- a/src/vnet/interface.h
+++ b/src/vnet/interface.h
@@ -470,6 +470,9 @@ typedef struct vnet_hw_interface_t
/* input node cpu index by queue */
u32 *input_node_thread_index_by_queue;
+ /* device input device_and_queue runtime index */
+ uword *dq_runtime_index_by_queue;
+
} vnet_hw_interface_t;
extern vnet_device_class_t vnet_local_interface_device_class;