diff options
| author |   Mohsin KAZMI <sykazmi@cisco.com> | 2017-01-18 11:59:45 +0100 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2017-01-19 11:00:11 +0000 |
| commit | cf751ec70df21affb19c77b2c51e3c231b8202ad (patch) | |
| tree | e880e3fa0f7147ce609c0c3592596d120c2ab57f /src/vnet/devices/af_packet/node.c | |
| parent | 07c39da547141f59b37a320cde5616ca652e7cff (diff) | |
af_packet: multithreading support
This patch adds multithreading support for af_packet interfaces.
Change-Id: Ief5d1117e7ffeaa59dbc2831e583d5d8e8d4fa7a
Signed-off-by: Mohsin KAZMI <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/af_packet/node.c')
| -rw-r--r-- | src/vnet/devices/af_packet/node.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/src/vnet/devices/af_packet/node.c b/src/vnet/devices/af_packet/node.c index 72004320c67..476ccca9d39 100644 --- a/src/vnet/devices/af_packet/node.c +++ b/src/vnet/devices/af_packet/node.c @@ -108,10 +108,9 @@ buffer_add_to_chain (vlib_main_t * vm, u32 bi, u32 first_bi, u32 prev_bi) always_inline uword af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame, u32 device_idx) + vlib_frame_t * frame, af_packet_if_t * apif) { af_packet_main_t *apm = &af_packet_main; - af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, device_idx); struct tpacket2_hdr *tph; u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; u32 block = 0; @@ -125,10 +124,10 @@ af_packet_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node, u32 frame_num = apif->rx_req->tp_frame_nr; u8 *block_start = apif->rx_ring + block * block_size; uword n_trace = vlib_get_trace_count (vm, node); + u32 cpu_index = os_get_cpu_number (); u32 n_buffer_bytes = vlib_buffer_free_list_buffer_size (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); u32 min_bufs = apif->rx_req->tp_frame_size / n_buffer_bytes; - int cpu_index = node->cpu_index; if (apif->per_interface_next_index != ~0) next_index = apif->per_interface_next_index; @@ -249,16 +248,18 @@ af_packet_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node, { int i; u32 n_rx_packets = 0; - + u32 cpu_index = os_get_cpu_number (); af_packet_main_t *apm = &af_packet_main; + af_packet_if_t *apif; - /* *INDENT-OFF* */ - clib_bitmap_foreach (i, apm->pending_input_bitmap, - ({ - clib_bitmap_set (apm->pending_input_bitmap, i, 0); - n_rx_packets += af_packet_device_input_fn(vm, node, frame, i); - })); - /* *INDENT-ON* */ + for (i = 0; i < vec_len (apm->interfaces); i++) + { + apif = vec_elt_at_index (apm->interfaces, i); + if (apif->is_admin_up && + (i % apm->input_cpu_count) == + (cpu_index - apm->input_cpu_first_index)) + n_rx_packets += af_packet_device_input_fn (vm, node, frame, apif); + } return n_rx_packets; } @@ -270,6 +271,9 @@ VLIB_REGISTER_NODE (af_packet_input_node) = { .sibling_of = "device-input", .format_trace = format_af_packet_input_trace, .type = VLIB_NODE_TYPE_INPUT, + /** + * default state is INTERRUPT mode, switch to POLLING if worker threads are enabled + */ .state = VLIB_NODE_STATE_INTERRUPT, .n_errors = AF_PACKET_INPUT_N_ERROR, .error_strings = af_packet_input_error_strings, |