diff options
author | Mohsin Kazmi <sykazmi@cisco.com> | 2016-05-02 14:04:57 +0200 |
---|---|---|
committer | Damjan Marion <damarion@cisco.com> | 2016-05-04 17:18:11 +0000 |
commit | 8f15e922f7f32c1beca5baa9a1a7f187ff5bdc4f (patch) | |
tree | aa2138efb9a8f559e5ad1715f08f6f192df06068 /vnet/vnet/devices/netmap/device.c | |
parent | 29d8510d22d05ebc73d423cc1904a4fef7123889 (diff) |
NETMAP: Some fixes
1) Correct the NIOCRXSYNC macro on receive side from NIOCTXSYNC.
2) Flush the pending messages in the tx rings.
Change-Id: I581040d03b1633a3d6fb22fa1fb285bcb7975afb
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'vnet/vnet/devices/netmap/device.c')
-rw-r--r-- | vnet/vnet/devices/netmap/device.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/vnet/vnet/devices/netmap/device.c b/vnet/vnet/devices/netmap/device.c index 36e17da2a22..dcd04733613 100644 --- a/vnet/vnet/devices/netmap/device.c +++ b/vnet/vnet/devices/netmap/device.c @@ -22,7 +22,8 @@ #include <vnet/devices/netmap/netmap.h> #define foreach_netmap_tx_func_error \ -_(NO_FREE_SLOTS, "no free tx slots") +_(NO_FREE_SLOTS, "no free tx slots") \ +_(PENDING_MSGS, "pending msgs in tx ring") typedef enum { #define _(f,s) NETMAP_TX_ERROR_##f, @@ -92,6 +93,7 @@ netmap_interface_tx (vlib_main_t * vm, netmap_main_t * nm = &netmap_main; u32 * buffers = vlib_frame_args (frame); u32 n_left = frame->n_vectors; + f64 const time_constant = 1e3; vnet_interface_output_runtime_t * rd = (void *) node->runtime_data; netmap_if_t * nif = pool_elt_at_index (nm->interfaces, rd->dev_instance); int cur_ring; @@ -104,21 +106,27 @@ netmap_interface_tx (vlib_main_t * vm, int n_free_slots = nm_ring_space(ring); uint cur = ring->cur; - if (!n_free_slots) - { - cur_ring++; - continue; - } + if (nm_tx_pending(ring)) + { + ioctl(nif->fd, NIOCTXSYNC, NULL); + clib_cpu_time_wait(time_constant); + + if (nm_tx_pending(ring) && !n_free_slots) + { + cur_ring++; + continue; + } + } while (n_left && n_free_slots) { - vlib_buffer_t * b0; + vlib_buffer_t * b0 = 0; u32 bi = buffers[0]; u32 len; u32 offset = 0; buffers++; - struct netmap_slot * slot = &ring->slot[cur]; + struct netmap_slot * slot = &ring->slot[cur]; do { @@ -144,8 +152,8 @@ netmap_interface_tx (vlib_main_t * vm, ioctl(nif->fd, NIOCTXSYNC, NULL); if (n_left) - vlib_error_count (vm, node->node_index, NETMAP_TX_ERROR_NO_FREE_SLOTS, - n_left); + vlib_error_count (vm, node->node_index, + (n_left == frame->n_vectors ? NETMAP_TX_ERROR_PENDING_MSGS : NETMAP_TX_ERROR_NO_FREE_SLOTS), n_left); vlib_buffer_free (vm, vlib_frame_args (frame), frame->n_vectors); return frame->n_vectors; |