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authorDamjan Marion <damarion@cisco.com>2017-06-15 19:01:31 +0200
committerFlorin Coras <florin.coras@gmail.com>2017-06-16 18:14:56 +0000
commit6f9ac6559ba155cc15dbc1153900f7bd3c4c9e13 (patch)
tree1448a05624913ac73db0a466a06f18ae2198490e /src
parentf53a8adf13175a376913e63b13671b2d8ad6377d (diff)
Add missing barrier sync to rx placement infra code
Change-Id: I25ccf8260dbe7e1550aee3904a688fc135ce1f03 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src')
-rw-r--r--src/vnet/devices/devices.c20
-rw-r--r--src/vnet/interface_cli.c4
2 files changed, 18 insertions, 6 deletions
diff --git a/src/vnet/devices/devices.c b/src/vnet/devices/devices.c
index 58c72077f24..e3311c43632 100644
--- a/src/vnet/devices/devices.c
+++ b/src/vnet/devices/devices.c
@@ -123,7 +123,7 @@ vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id, uword thread_index)
{
vnet_device_main_t *vdm = &vnet_device_main;
- vlib_main_t *vm;
+ vlib_main_t *vm, *vm0;
vnet_device_input_runtime_t *rt;
vnet_device_and_queue_t *dq;
vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
@@ -143,6 +143,10 @@ vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
}
vm = vlib_mains[thread_index];
+ vm0 = vlib_get_main ();
+
+ vlib_worker_thread_barrier_sync (vm0);
+
rt = vlib_node_get_runtime_data (vm, hw->input_node_index);
vec_add2 (rt->devices_and_queues, dq, 1);
@@ -157,6 +161,9 @@ vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
vec_validate (hw->rx_mode_by_queue, queue_id);
hw->input_node_thread_index_by_queue[queue_id] = thread_index;
hw->rx_mode_by_queue[queue_id] = VNET_HW_INTERFACE_RX_MODE_POLLING;
+
+ vlib_worker_thread_barrier_release (vm0);
+
vlib_node_set_state (vm, hw->input_node_index, rt->enabled_node_state);
}
@@ -164,7 +171,7 @@ int
vnet_hw_interface_unassign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
u16 queue_id)
{
- vlib_main_t *vm;
+ vlib_main_t *vm, *vm0;
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;
@@ -187,16 +194,19 @@ vnet_hw_interface_unassign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
{
mode = dq->mode;
- vec_del1 (rt->devices_and_queues, dq - rt->devices_and_queues);
- goto deleted;
+ goto delete;
}
return VNET_API_ERROR_INVALID_INTERFACE;
-deleted:
+delete:
+ vm0 = vlib_get_main ();
+ vlib_worker_thread_barrier_sync (vm0);
+ vec_del1 (rt->devices_and_queues, dq - rt->devices_and_queues);
vnet_device_queue_update (vnm, rt);
hw->rx_mode_by_queue[queue_id] = VNET_HW_INTERFACE_RX_MODE_UNKNOWN;
+ vlib_worker_thread_barrier_release (vm0);
if (vec_len (rt->devices_and_queues) == 0)
vlib_node_set_state (vm, hw->input_node_index, VLIB_NODE_STATE_DISABLED);
diff --git a/src/vnet/interface_cli.c b/src/vnet/interface_cli.c
index e18a80fc744..d37c78942c9 100644
--- a/src/vnet/interface_cli.c
+++ b/src/vnet/interface_cli.c
@@ -1445,8 +1445,10 @@ set_interface_rx_placement (vlib_main_t * vm, unformat_input_t * input,
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (cmd_set_if_rx_placement,static) = {
.path = "set interface rx-placement",
- .short_help = "set interface rx-placement <hw-interface> [queue <n>] [thread <n> | main]",
+ .short_help = "set interface rx-placement <hw-interface> [queue <n>] "
+ "[worker <n> | main]",
.function = set_interface_rx_placement,
+ .is_mp_safe = 1,
};
/* *INDENT-ON* */