+++ /dev/null
-/*
- *------------------------------------------------------------------
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *------------------------------------------------------------------
- */
-
-#include <stdint.h>
-#include <net/if.h>
-#include <sys/ioctl.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vnet/ethernet/ethernet.h>
-
-#include <vnet/devices/netmap/net_netmap.h>
-#include <vnet/devices/netmap/netmap.h>
-
-#define foreach_netmap_tx_func_error \
-_(NO_FREE_SLOTS, "no free tx slots") \
-_(PENDING_MSGS, "pending msgs in tx ring")
-
-typedef enum
-{
-#define _(f,s) NETMAP_TX_ERROR_##f,
- foreach_netmap_tx_func_error
-#undef _
- NETMAP_TX_N_ERROR,
-} netmap_tx_func_error_t;
-
-static char *netmap_tx_func_error_strings[] = {
-#define _(n,s) s,
- foreach_netmap_tx_func_error
-#undef _
-};
-
-
-static u8 *
-format_netmap_device_name (u8 * s, va_list * args)
-{
- u32 i = va_arg (*args, u32);
- netmap_main_t *apm = &netmap_main;
- netmap_if_t *nif = pool_elt_at_index (apm->interfaces, i);
-
- s = format (s, "netmap-%s", nif->host_if_name);
- return s;
-}
-
-static u8 *
-format_netmap_device (u8 * s, va_list * args)
-{
- u32 dev_instance = va_arg (*args, u32);
- int verbose = va_arg (*args, int);
- netmap_main_t *nm = &netmap_main;
- netmap_if_t *nif = vec_elt_at_index (nm->interfaces, dev_instance);
- u32 indent = format_get_indent (s);
-
- s = format (s, "NETMAP interface");
- if (verbose)
- {
- s = format (s, "\n%U version %d flags 0x%x"
- "\n%U region %u memsize 0x%x offset 0x%x"
- "\n%U tx_slots %u rx_slots %u tx_rings %u rx_rings %u",
- format_white_space, indent + 2,
- nif->req->nr_version,
- nif->req->nr_flags,
- format_white_space, indent + 2,
- nif->mem_region,
- nif->req->nr_memsize,
- nif->req->nr_offset,
- format_white_space, indent + 2,
- nif->req->nr_tx_slots,
- nif->req->nr_rx_slots,
- nif->req->nr_tx_rings, nif->req->nr_rx_rings);
- }
- return s;
-}
-
-static u8 *
-format_netmap_tx_trace (u8 * s, va_list * args)
-{
- s = format (s, "Unimplemented...");
- return s;
-}
-
-VNET_DEVICE_CLASS_TX_FN (netmap_device_class) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- netmap_main_t *nm = &netmap_main;
- u32 *buffers = vlib_frame_vector_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;
-
- clib_spinlock_lock_if_init (&nif->lockp);
-
- cur_ring = nif->first_tx_ring;
-
- while (n_left && cur_ring <= nif->last_tx_ring)
- {
- struct netmap_ring *ring = NETMAP_TXRING (nif->nifp, cur_ring);
- int n_free_slots = nm_ring_space (ring);
- uint cur = ring->cur;
-
- if (nm_tx_pending (ring))
- {
- if (ioctl (nif->fd, NIOCTXSYNC, NULL) < 0)
- clib_unix_warning ("NIOCTXSYNC");
- 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 = 0;
- u32 bi = buffers[0];
- u32 len;
- u32 offset = 0;
- buffers++;
-
- struct netmap_slot *slot = &ring->slot[cur];
-
- do
- {
- b0 = vlib_get_buffer (vm, bi);
- len = b0->current_length;
- /* memcpy */
- clib_memcpy_fast ((u8 *) NETMAP_BUF (ring, slot->buf_idx) +
- offset, vlib_buffer_get_current (b0), len);
- offset += len;
- }
- while ((bi = b0->next_buffer));
-
- slot->len = offset;
- cur = (cur + 1) % ring->num_slots;
- n_free_slots--;
- n_left--;
- }
- CLIB_MEMORY_BARRIER ();
- ring->head = ring->cur = cur;
- }
-
- if (n_left < frame->n_vectors)
- ioctl (nif->fd, NIOCTXSYNC, NULL);
-
- clib_spinlock_unlock_if_init (&nif->lockp);
-
- if (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_vector_args (frame), frame->n_vectors);
- return frame->n_vectors;
-}
-
-static void
-netmap_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index,
- u32 node_index)
-{
- netmap_main_t *apm = &netmap_main;
- vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
- netmap_if_t *nif = pool_elt_at_index (apm->interfaces, hw->dev_instance);
-
- /* Shut off redirection */
- if (node_index == ~0)
- {
- nif->per_interface_next_index = node_index;
- return;
- }
-
- nif->per_interface_next_index =
- vlib_node_add_next (vlib_get_main (), netmap_input_node.index,
- node_index);
-}
-
-static void
-netmap_clear_hw_interface_counters (u32 instance)
-{
- /* Nothing for now */
-}
-
-static clib_error_t *
-netmap_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
-{
- netmap_main_t *apm = &netmap_main;
- vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
- netmap_if_t *nif = pool_elt_at_index (apm->interfaces, hw->dev_instance);
- u32 hw_flags;
-
- nif->is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
-
- if (nif->is_admin_up)
- hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP;
- else
- hw_flags = 0;
-
- vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
-
- return 0;
-}
-
-static clib_error_t *
-netmap_subif_add_del_function (vnet_main_t * vnm,
- u32 hw_if_index,
- struct vnet_sw_interface_t *st, int is_add)
-{
- /* Nothing for now */
- return 0;
-}
-
-/* *INDENT-OFF* */
-VNET_DEVICE_CLASS (netmap_device_class) = {
- .name = "netmap",
- .format_device_name = format_netmap_device_name,
- .format_device = format_netmap_device,
- .format_tx_trace = format_netmap_tx_trace,
- .tx_function_n_errors = NETMAP_TX_N_ERROR,
- .tx_function_error_strings = netmap_tx_func_error_strings,
- .rx_redirect_to_node = netmap_set_interface_next_node,
- .clear_counters = netmap_clear_hw_interface_counters,
- .admin_up_down_function = netmap_interface_admin_up_down,
- .subif_add_del_function = netmap_subif_add_del_function,
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff