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authorDamjan Marion <damarion@cisco.com>2020-01-30 20:39:58 +0100
committerDamjan Marion <dmarion@me.com>2020-01-30 21:05:09 +0000
commit7db6ab03db874d030a2d56ff02036c0594b46ccc (patch)
treeb0e65c45fee08d2bd6394cc9a11c77f12147ddf7 /src/vnet/devices/netmap
parent47c995063ea079dc647a16592b4dd17c8214aad6 (diff)
misc: deprecate netmap and ixge drivers
Both are out of sync for long time... Type: refactor Change-Id: I7de3170d35330fc172501d87655dfef91998b8fe Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vnet/devices/netmap')
-rw-r--r--src/vnet/devices/netmap/FEATURE.yaml12
-rw-r--r--src/vnet/devices/netmap/cli.c236
-rw-r--r--src/vnet/devices/netmap/device.c252
-rw-r--r--src/vnet/devices/netmap/dir.dox27
-rw-r--r--src/vnet/devices/netmap/net_netmap.h650
-rw-r--r--src/vnet/devices/netmap/netmap.api56
-rw-r--r--src/vnet/devices/netmap/netmap.c314
-rw-r--r--src/vnet/devices/netmap/netmap.h166
-rw-r--r--src/vnet/devices/netmap/netmap_api.c137
-rw-r--r--src/vnet/devices/netmap/node.c298
10 files changed, 0 insertions, 2148 deletions
diff --git a/src/vnet/devices/netmap/FEATURE.yaml b/src/vnet/devices/netmap/FEATURE.yaml
deleted file mode 100644
index e23e5c243e7..00000000000
--- a/src/vnet/devices/netmap/FEATURE.yaml
+++ /dev/null
@@ -1,12 +0,0 @@
----
-name: Netmap Device
-maintainer: Damjan Marion <damarion@cisco.com>
-features:
- - L4 checksum offload
-description: "Create a netmap interface, which is a high speed user-space
- interface that allows VPP to patch into a linux namespace,
- a linux container, or a physical NIC without the use of DPDK."
-missing:
- - API dump
-state: production
-properties: [API, CLI, STATS, MULTITHREAD]
diff --git a/src/vnet/devices/netmap/cli.c b/src/vnet/devices/netmap/cli.c
deleted file mode 100644
index 713632947a1..00000000000
--- a/src/vnet/devices/netmap/cli.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- *------------------------------------------------------------------
- * 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>
-
-static clib_error_t *
-netmap_create_command_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- u8 *host_if_name = NULL;
- u8 hwaddr[6];
- u8 *hw_addr_ptr = 0;
- int r;
- u8 is_pipe = 0;
- u8 is_master = 0;
- u32 sw_if_index = ~0;
- clib_error_t *error = NULL;
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "name %s", &host_if_name))
- ;
- else
- if (unformat
- (line_input, "hw-addr %U", unformat_ethernet_address, hwaddr))
- hw_addr_ptr = hwaddr;
- else if (unformat (line_input, "pipe"))
- is_pipe = 1;
- else if (unformat (line_input, "master"))
- is_master = 1;
- else if (unformat (line_input, "slave"))
- is_master = 0;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (host_if_name == NULL)
- {
- error = clib_error_return (0, "missing host interface name");
- goto done;
- }
-
- r =
- netmap_create_if (vm, host_if_name, hw_addr_ptr, is_pipe, is_master,
- &sw_if_index);
-
- if (r == VNET_API_ERROR_SYSCALL_ERROR_1)
- {
- error = clib_error_return (0, "%s (errno %d)", strerror (errno), errno);
- goto done;
- }
-
- if (r == VNET_API_ERROR_INVALID_INTERFACE)
- {
- error = clib_error_return (0, "Invalid interface name");
- goto done;
- }
-
- if (r == VNET_API_ERROR_SUBIF_ALREADY_EXISTS)
- {
- error = clib_error_return (0, "Interface already exists");
- goto done;
- }
-
- vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name, vnet_get_main (),
- sw_if_index);
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-/*?
- * '<em>netmap</em>' is a framework for very fast packet I/O from userspace.
- * '<em>VALE</em>' is an equally fast in-kernel software switch using the
- * netmap API. '<em>netmap</em>' includes '<em>netmap pipes</em>', a shared
- * memory packet transport channel. Together, they provide a high speed
- * user-space interface that allows VPP to patch into a linux namespace, a
- * linux container, or a physical NIC without the use of DPDK. Netmap/VALE
- * generates the '<em>netmap.ko</em>' kernel module that needs to be loaded
- * before netmap interfaces can be created.
- * - https://github.com/luigirizzo/netmap - Netmap/VALE repo.
- * - https://github.com/vpp-dev/netmap - VPP development package for Netmap/VALE,
- * which is a snapshot of the Netmap/VALE repo with minor changes to work
- * with containers and modified kernel drivers to work with NICs.
- *
- * Create a netmap interface that will attach to a linux interface.
- * The interface must already exist. Once created, a new netmap interface
- * will exist in VPP with the name '<em>netmap-<ifname></em>', where
- * '<em><ifname></em>' takes one of two forms:
- * - <b>ifname</b> - Linux interface to bind too.
- * - <b>valeXXX:YYY</b> -
- * - Where '<em>valeXXX</em>' is an arbitrary name for a VALE
- * interface that must start with '<em>vale</em>' and is less
- * than 16 characters.
- * - Where '<em>YYY</em>' is an existing linux namespace.
- *
- * This command has the following optional parameters:
- *
- * - <b>hw-addr <mac-addr></b> - Optional ethernet address, can be in either
- * X:X:X:X:X:X unix or X.X.X cisco format.
- *
- * - <b>pipe</b> - Optional flag to indicate that a '<em>netmap pipe</em>'
- * instance should be created.
- *
- * - <b>master | slave</b> - Optional flag to indicate whether VPP should
- * be the master or slave of the '<em>netmap pipe</em>'. Only considered
- * if '<em>pipe</em>' is entered. Defaults to '<em>slave</em>' if not entered.
- *
- * @cliexpar
- * Example of how to create a netmap interface tied to the linux
- * namespace '<em>vpp1</em>':
- * @cliexstart{create netmap name vale00:vpp1 hw-addr 02:FE:3F:34:15:9B pipe master}
- * netmap-vale00:vpp1
- * @cliexend
- * Once the netmap interface is created, enable the interface using:
- * @cliexcmd{set interface state netmap-vale00:vpp1 up}
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (netmap_create_command, static) = {
- .path = "create netmap",
- .short_help = "create netmap name <ifname>|valeXXX:YYY "
- "[hw-addr <mac-addr>] [pipe] [master|slave]",
- .function = netmap_create_command_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-netmap_delete_command_fn (vlib_main_t * vm, unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- unformat_input_t _line_input, *line_input = &_line_input;
- u8 *host_if_name = NULL;
- clib_error_t *error = NULL;
-
- /* Get a line of input. */
- if (!unformat_user (input, unformat_line_input, line_input))
- return 0;
-
- while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (line_input, "name %s", &host_if_name))
- ;
- else
- {
- error = clib_error_return (0, "unknown input `%U'",
- format_unformat_error, line_input);
- goto done;
- }
- }
-
- if (host_if_name == NULL)
- {
- error = clib_error_return (0, "missing host interface name");
- goto done;
- }
-
- netmap_delete_if (vm, host_if_name);
-
-done:
- unformat_free (line_input);
-
- return error;
-}
-
-/*?
- * Delete a netmap interface. Use the '<em><ifname></em>' to identify
- * the netmap interface to be deleted. In VPP, netmap interfaces are
- * named as '<em>netmap-<ifname></em>', where '<em><ifname></em>'
- * takes one of two forms:
- * - <b>ifname</b> - Linux interface to bind too.
- * - <b>valeXXX:YYY</b> -
- * - Where '<em>valeXXX</em>' is an arbitrary name for a VALE
- * interface that must start with '<em>vale</em>' and is less
- * than 16 characters.
- * - Where '<em>YYY</em>' is an existing linux namespace.
- *
- * @cliexpar
- * Example of how to delete a netmap interface named '<em>netmap-vale00:vpp1</em>':
- * @cliexcmd{delete netmap name vale00:vpp1}
-?*/
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (netmap_delete_command, static) = {
- .path = "delete netmap",
- .short_help = "delete netmap name <ifname>|valeXXX:YYY",
- .function = netmap_delete_command_fn,
-};
-/* *INDENT-ON* */
-
-clib_error_t *
-netmap_cli_init (vlib_main_t * vm)
-{
- return 0;
-}
-
-VLIB_INIT_FUNCTION (netmap_cli_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/netmap/device.c b/src/vnet/devices/netmap/device.c
deleted file mode 100644
index 47407aaaa26..00000000000
--- a/src/vnet/devices/netmap/device.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- *------------------------------------------------------------------
- * 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:
- */
diff --git a/src/vnet/devices/netmap/dir.dox b/src/vnet/devices/netmap/dir.dox
deleted file mode 100644
index 7ddbf947c29..00000000000
--- a/src/vnet/devices/netmap/dir.dox
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (c) 2017 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.
- */
-
-/* Doxygen directory documentation */
-
-/**
-@dir
-@brief netmap Interface Implementation.
-
-This directory contains the source code for the netmap driver.
-
-*/
-/*? %%clicmd:group_label netmap %% ?*/
-/*? %%syscfg:group_label netmap %% ?*/
diff --git a/src/vnet/devices/netmap/net_netmap.h b/src/vnet/devices/netmap/net_netmap.h
deleted file mode 100644
index fd4253b7c0c..00000000000
--- a/src/vnet/devices/netmap/net_netmap.h
+++ /dev/null
@@ -1,650 +0,0 @@
-/*
- * Copyright (C) 2011-2014 Matteo Landi, Luigi Rizzo. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``S IS''AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-/*
- * $FreeBSD: head/sys/net/netmap.h 251139 2013-05-30 14:07:14Z luigi $
- *
- * Definitions of constants and the structures used by the netmap
- * framework, for the part visible to both kernel and userspace.
- * Detailed info on netmap is available with "man netmap" or at
- *
- * http://info.iet.unipi.it/~luigi/netmap/
- *
- * This API is also used to communicate with the VALE software switch
- */
-
-#ifndef _NET_NETMAP_H_
-#define _NET_NETMAP_H_
-
-#define NETMAP_API 11 /* current API version */
-
-#define NETMAP_MIN_API 11 /* min and max versions accepted */
-#define NETMAP_MAX_API 15
-/*
- * Some fields should be cache-aligned to reduce contention.
- * The alignment is architecture and OS dependent, but rather than
- * digging into OS headers to find the exact value we use an estimate
- * that should cover most architectures.
- */
-#define NM_CACHE_ALIGN 128
-
-/*
- * --- Netmap data structures ---
- *
- * The userspace data structures used by netmap are shown below.
- * They are allocated by the kernel and mmap()ed by userspace threads.
- * Pointers are implemented as memory offsets or indexes,
- * so that they can be easily dereferenced in kernel and userspace.
-
- KERNEL (opaque, obviously)
-
- ====================================================================
- |
- USERSPACE | struct netmap_ring
- +---->+---------------+
- / | head,cur,tail |
- struct netmap_if (nifp, 1 per fd) / | buf_ofs |
- +---------------+ / | other fields |
- | ni_tx_rings | / +===============+
- | ni_rx_rings | / | buf_idx, len | slot[0]
- | | / | flags, ptr |
- | | / +---------------+
- +===============+ / | buf_idx, len | slot[1]
- | txring_ofs[0] | (rel.to nifp)--' | flags, ptr |
- | txring_ofs[1] | +---------------+
- (tx+1 entries) (num_slots entries)
- | txring_ofs[t] | | buf_idx, len | slot[n-1]
- +---------------+ | flags, ptr |
- | rxring_ofs[0] | +---------------+
- | rxring_ofs[1] |
- (rx+1 entries)
- | rxring_ofs[r] |
- +---------------+
-
- * For each "interface" (NIC, host stack, PIPE, VALE switch port) bound to
- * a file descriptor, the mmap()ed region contains a (logically readonly)
- * struct netmap_if pointing to struct netmap_ring's.
- *
- * There is one netmap_ring per physical NIC ring, plus one tx/rx ring
- * pair attached to the host stack (this pair is unused for non-NIC ports).
- *
- * All physical/host stack ports share the same memory region,
- * so that zero-copy can be implemented between them.
- * VALE switch ports instead have separate memory regions.
- *
- * The netmap_ring is the userspace-visible replica of the NIC ring.
- * Each slot has the index of a buffer (MTU-sized and residing in the
- * mmapped region), its length and some flags. An extra 64-bit pointer
- * is provided for user-supplied buffers in the tx path.
- *
- * In user space, the buffer address is computed as
- * (char *)ring + buf_ofs + index * NETMAP_BUF_SIZE
- *
- * Added in NETMAP_API 11:
- *
- * + NIOCREGIF can request the allocation of extra spare buffers from
- * the same memory pool. The desired number of buffers must be in
- * nr_arg3. The ioctl may return fewer buffers, depending on memory
- * availability. nr_arg3 will return the actual value, and, once
- * mapped, nifp->ni_bufs_head will be the index of the first buffer.
- *
- * The buffers are linked to each other using the first uint32_t
- * as the index. On close, ni_bufs_head must point to the list of
- * buffers to be released.
- *
- * + NIOCREGIF can request space for extra rings (and buffers)
- * allocated in the same memory space. The number of extra rings
- * is in nr_arg1, and is advisory. This is a no-op on NICs where
- * the size of the memory space is fixed.
- *
- * + NIOCREGIF can attach to PIPE rings sharing the same memory
- * space with a parent device. The ifname indicates the parent device,
- * which must already exist. Flags in nr_flags indicate if we want to
- * bind the master or slave side, the index (from nr_ringid)
- * is just a cookie and does not need to be sequential.
- *
- * + NIOCREGIF can also attach to 'monitor' rings that replicate
- * the content of specific rings, also from the same memory space.
- *
- * Extra flags in nr_flags support the above functions.
- * Application libraries may use the following naming scheme:
- * netmap:foo all NIC ring pairs
- * netmap:foo^ only host ring pair
- * netmap:foo+ all NIC ring + host ring pairs
- * netmap:foo-k the k-th NIC ring pair
- * netmap:foo{k PIPE ring pair k, master side
- * netmap:foo}k PIPE ring pair k, slave side
- */
-
-/*
- * struct netmap_slot is a buffer descriptor
- */
-struct netmap_slot {
- uint32_t buf_idx; /* buffer index */
- uint16_t len; /* length for this slot */
- uint16_t flags; /* buf changed, etc. */
- uint64_t ptr; /* pointer for indirect buffers */
-};
-
-/*
- * The following flags control how the slot is used
- */
-
-#define NS_BUF_CHANGED 0x0001 /* buf_idx changed */
- /*
- * must be set whenever buf_idx is changed (as it might be
- * necessary to recompute the physical address and mapping)
- *
- * It is also set by the kernel whenever the buf_idx is
- * changed internally (e.g., by pipes). Applications may
- * use this information to know when they can reuse the
- * contents of previously prepared buffers.
- */
-
-#define NS_REPORT 0x0002 /* ask the hardware to report results */
- /*
- * Request notification when slot is used by the hardware.
- * Normally transmit completions are handled lazily and
- * may be unreported. This flag lets us know when a slot
- * has been sent (e.g. to terminate the sender).
- */
-
-#define NS_FORWARD 0x0004 /* pass packet 'forward' */
- /*
- * (Only for physical ports, rx rings with NR_FORWARD set).
- * Slot released to the kernel (i.e. before ring->head) with
- * this flag set are passed to the peer ring (host/NIC),
- * thus restoring the host-NIC connection for these slots.
- * This supports efficient traffic monitoring or firewalling.
- */
-
-#define NS_NO_LEARN 0x0008 /* disable bridge learning */
- /*
- * On a VALE switch, do not 'learn' the source port for
- * this buffer.
- */
-
-#define NS_INDIRECT 0x0010 /* userspace buffer */
- /*
- * (VALE tx rings only) data is in a userspace buffer,
- * whose address is in the 'ptr' field in the slot.
- */
-
-#define NS_MOREFRAG 0x0020 /* packet has more fragments */
- /*
- * (VALE ports only)
- * Set on all but the last slot of a multi-segment packet.
- * The 'len' field refers to the individual fragment.
- */
-
-#define NS_PORT_SHIFT 8
-#define NS_PORT_MASK (0xff << NS_PORT_SHIFT)
- /*
- * The high 8 bits of the flag, if not zero, indicate the
- * destination port for the VALE switch, overriding
- * the lookup table.
- */
-
-#define NS_RFRAGS(_slot) ( ((_slot)->flags >> 8) & 0xff)
- /*
- * (VALE rx rings only) the high 8 bits
- * are the number of fragments.
- */
-
-
-/*
- * struct netmap_ring
- *
- * Netmap representation of a TX or RX ring (also known as "queue").
- * This is a queue implemented as a fixed-size circular array.
- * At the software level the important fields are: head, cur, tail.
- *
- * In TX rings:
- *
- * head first slot available for transmission.
- * cur wakeup point. select() and poll() will unblock
- * when 'tail' moves past 'cur'
- * tail (readonly) first slot reserved to the kernel
- *
- * [head .. tail-1] can be used for new packets to send;
- * 'head' and 'cur' must be incremented as slots are filled
- * with new packets to be sent;
- * 'cur' can be moved further ahead if we need more space
- * for new transmissions. XXX todo (2014-03-12)
- *
- * In RX rings:
- *
- * head first valid received packet
- * cur wakeup point. select() and poll() will unblock
- * when 'tail' moves past 'cur'
- * tail (readonly) first slot reserved to the kernel
- *
- * [head .. tail-1] contain received packets;
- * 'head' and 'cur' must be incremented as slots are consumed
- * and can be returned to the kernel;
- * 'cur' can be moved further ahead if we want to wait for
- * new packets without returning the previous ones.
- *
- * DATA OWNERSHIP/LOCKING:
- * The netmap_ring, and all slots and buffers in the range
- * [head .. tail-1] are owned by the user program;
- * the kernel only accesses them during a netmap system call
- * and in the user thread context.
- *
- * Other slots and buffers are reserved for use by the kernel
- */
-struct netmap_ring {
- /*
- * buf_ofs is meant to be used through macros.
- * It contains the offset of the buffer region from this
- * descriptor.
- */
- const int64_t buf_ofs;
- const uint32_t num_slots; /* number of slots in the ring. */
- const uint32_t nr_buf_size;
- const uint16_t ringid;
- const uint16_t dir; /* 0: tx, 1: rx */
-
- uint32_t head; /* (u) first user slot */
- uint32_t cur; /* (u) wakeup point */
- uint32_t tail; /* (k) first kernel slot */
-
- uint32_t flags;
-
- struct timeval ts; /* (k) time of last *sync() */
-
- /* opaque room for a mutex or similar object */
-#if !defined(_WIN32) || defined(__CYGWIN__)
- uint8_t __attribute__((__aligned__(NM_CACHE_ALIGN))) sem[128];
-#else
- uint8_t __declspec(align(NM_CACHE_ALIGN)) sem[128];
-#endif
-
- /* the slots follow. This struct has variable size */
- struct netmap_slot slot[0]; /* array of slots. */
-};
-
-
-/*
- * RING FLAGS
- */
-#define NR_TIMESTAMP 0x0002 /* set timestamp on *sync() */
- /*
- * updates the 'ts' field on each netmap syscall. This saves
- * saves a separate gettimeofday(), and is not much worse than
- * software timestamps generated in the interrupt handler.
- */
-
-#define NR_FORWARD 0x0004 /* enable NS_FORWARD for ring */
- /*
- * Enables the NS_FORWARD slot flag for the ring.
- */
-
-
-/*
- * Netmap representation of an interface and its queue(s).
- * This is initialized by the kernel when binding a file
- * descriptor to a port, and should be considered as readonly
- * by user programs. The kernel never uses it.
- *
- * There is one netmap_if for each file descriptor on which we want
- * to select/poll.
- * select/poll operates on one or all pairs depending on the value of
- * nmr_queueid passed on the ioctl.
- */
-struct netmap_if {
- char ni_name[IFNAMSIZ]; /* name of the interface. */
- const uint32_t ni_version; /* API version, currently unused */
- const uint32_t ni_flags; /* properties */
-#define NI_PRIV_MEM 0x1 /* private memory region */
-
- /*
- * The number of packet rings available in netmap mode.
- * Physical NICs can have different numbers of tx and rx rings.
- * Physical NICs also have a 'host' ring pair.
- * Additionally, clients can request additional ring pairs to
- * be used for internal communication.
- */
- const uint32_t ni_tx_rings; /* number of HW tx rings */
- const uint32_t ni_rx_rings; /* number of HW rx rings */
-
- uint32_t ni_bufs_head; /* head index for extra bufs */
- uint32_t ni_spare1[5];
- /*
- * The following array contains the offset of each netmap ring
- * from this structure, in the following order:
- * NIC tx rings (ni_tx_rings); host tx ring (1); extra tx rings;
- * NIC rx rings (ni_rx_rings); host tx ring (1); extra rx rings.
- *
- * The area is filled up by the kernel on NIOCREGIF,
- * and then only read by userspace code.
- */
- const ssize_t ring_ofs[0];
-};
-
-
-#ifndef NIOCREGIF
-/*
- * ioctl names and related fields
- *
- * NIOCTXSYNC, NIOCRXSYNC synchronize tx or rx queues,
- * whose identity is set in NIOCREGIF through nr_ringid.
- * These are non blocking and take no argument.
- *
- * NIOCGINFO takes a struct ifreq, the interface name is the input,
- * the outputs are number of queues and number of descriptor
- * for each queue (useful to set number of threads etc.).
- * The info returned is only advisory and may change before
- * the interface is bound to a file descriptor.
- *
- * NIOCREGIF takes an interface name within a struct nmre,
- * and activates netmap mode on the interface (if possible).
- *
- * The argument to NIOCGINFO/NIOCREGIF overlays struct ifreq so we
- * can pass it down to other NIC-related ioctls.
- *
- * The actual argument (struct nmreq) has a number of options to request
- * different functions.
- * The following are used in NIOCREGIF when nr_cmd == 0:
- *
- * nr_name (in)
- * The name of the port (em0, valeXXX:YYY, etc.)
- * limited to IFNAMSIZ for backward compatibility.
- *
- * nr_version (in/out)
- * Must match NETMAP_API as used in the kernel, error otherwise.
- * Always returns the desired value on output.
- *
- * nr_tx_slots, nr_tx_slots, nr_tx_rings, nr_rx_rings (in/out)
- * On input, non-zero values may be used to reconfigure the port
- * according to the requested values, but this is not guaranteed.
- * On output the actual values in use are reported.
- *
- * nr_ringid (in)
- * Indicates how rings should be bound to the file descriptors.
- * If nr_flags != 0, then the low bits (in NETMAP_RING_MASK)
- * are used to indicate the ring number, and nr_flags specifies
- * the actual rings to bind. NETMAP_NO_TX_POLL is unaffected.
- *
- * NOTE: THE FOLLOWING (nr_flags == 0) IS DEPRECATED:
- * If nr_flags == 0, NETMAP_HW_RING and NETMAP_SW_RING control
- * the binding as follows:
- * 0 (default) binds all physical rings
- * NETMAP_HW_RING | ring number binds a single ring pair
- * NETMAP_SW_RING binds only the host tx/rx rings
- *
- * NETMAP_NO_TX_POLL can be OR-ed to make select()/poll() push
- * packets on tx rings only if POLLOUT is set.
- * The default is to push any pending packet.
- *
- * NETMAP_DO_RX_POLL can be OR-ed to make select()/poll() release
- * packets on rx rings also when POLLIN is NOT set.
- * The default is to touch the rx ring only with POLLIN.
- * Note that this is the opposite of TX because it
- * reflects the common usage.
- *
- * NOTE: NETMAP_PRIV_MEM IS DEPRECATED, use nr_arg2 instead.
- * NETMAP_PRIV_MEM is set on return for ports that do not use
- * the global memory allocator.
- * This information is not significant and applications
- * should look at the region id in nr_arg2
- *
- * nr_flags is the recommended mode to indicate which rings should
- * be bound to a file descriptor. Values are NR_REG_*
- *
- * nr_arg1 (in) The number of extra rings to be reserved.
- * Especially when allocating a VALE port the system only
- * allocates the amount of memory needed for the port.
- * If more shared memory rings are desired (e.g. for pipes),
- * the first invocation for the same basename/allocator
- * should specify a suitable number. Memory cannot be
- * extended after the first allocation without closing
- * all ports on the same region.
- *
- * nr_arg2 (in/out) The identity of the memory region used.
- * On input, 0 means the system decides autonomously,
- * other values may try to select a specific region.
- * On return the actual value is reported.
- * Region '1' is the global allocator, normally shared
- * by all interfaces. Other values are private regions.
- * If two ports the same region zero-copy is possible.
- *
- * nr_arg3 (in/out) number of extra buffers to be allocated.
- *
- *
- *
- * nr_cmd (in) if non-zero indicates a special command:
- * NETMAP_BDG_ATTACH and nr_name = vale*:ifname
- * attaches the NIC to the switch; nr_ringid specifies
- * which rings to use. Used by vale-ctl -a ...
- * nr_arg1 = NETMAP_BDG_HOST also attaches the host port
- * as in vale-ctl -h ...
- *
- * NETMAP_BDG_DETACH and nr_name = vale*:ifname
- * disconnects a previously attached NIC.
- * Used by vale-ctl -d ...
- *
- * NETMAP_BDG_LIST
- * list the configuration of VALE switches.
- *
- * NETMAP_BDG_VNET_HDR
- * Set the virtio-net header length used by the client
- * of a VALE switch port.
- *
- * NETMAP_BDG_NEWIF
- * create a persistent VALE port with name nr_name.
- * Used by vale-ctl -n ...
- *
- * NETMAP_BDG_DELIF
- * delete a persistent VALE port. Used by vale-ctl -d ...
- *
- * nr_arg1, nr_arg2, nr_arg3 (in/out) command specific
- *
- *
- *
- */
-
-
-/*
- * struct nmreq overlays a struct ifreq (just the name)
- */
-struct nmreq {
- char nr_name[IFNAMSIZ];
- uint32_t nr_version; /* API version */
- uint32_t nr_offset; /* nifp offset in the shared region */
- uint32_t nr_memsize; /* size of the shared region */
- uint32_t nr_tx_slots; /* slots in tx rings */
- uint32_t nr_rx_slots; /* slots in rx rings */
- uint16_t nr_tx_rings; /* number of tx rings */
- uint16_t nr_rx_rings; /* number of rx rings */
-
- uint16_t nr_ringid; /* ring(s) we care about */
-#define NETMAP_HW_RING 0x4000 /* single NIC ring pair */
-#define NETMAP_SW_RING 0x2000 /* only host ring pair */
-
-#define NETMAP_RING_MASK 0x0fff /* the ring number */
-
-#define NETMAP_NO_TX_POLL 0x1000 /* no automatic txsync on poll */
-
-#define NETMAP_DO_RX_POLL 0x8000 /* DO automatic rxsync on poll */
-
- uint16_t nr_cmd;
-#define NETMAP_BDG_ATTACH 1 /* attach the NIC */
-#define NETMAP_BDG_DETACH 2 /* detach the NIC */
-#define NETMAP_BDG_REGOPS 3 /* register bridge callbacks */
-#define NETMAP_BDG_LIST 4 /* get bridge's info */
-#define NETMAP_BDG_VNET_HDR 5 /* set the port virtio-net-hdr length */
-#define NETMAP_BDG_OFFSET NETMAP_BDG_VNET_HDR /* deprecated alias */
-#define NETMAP_BDG_NEWIF 6 /* create a virtual port */
-#define NETMAP_BDG_DELIF 7 /* destroy a virtual port */
-#define NETMAP_PT_HOST_CREATE 8 /* create ptnetmap kthreads */
-#define NETMAP_PT_HOST_DELETE 9 /* delete ptnetmap kthreads */
-#define NETMAP_BDG_POLLING_ON 10 /* delete polling kthread */
-#define NETMAP_BDG_POLLING_OFF 11 /* delete polling kthread */
-#define NETMAP_VNET_HDR_GET 12 /* get the port virtio-net-hdr length */
- uint16_t nr_arg1; /* reserve extra rings in NIOCREGIF */
-#define NETMAP_BDG_HOST 1 /* attach the host stack on ATTACH */
-
- uint16_t nr_arg2;
- uint32_t nr_arg3; /* req. extra buffers in NIOCREGIF */
- uint32_t nr_flags;
- /* various modes, extends nr_ringid */
- uint32_t spare2[1];
-};
-
-#define NR_REG_MASK 0xf /* values for nr_flags */
-enum { NR_REG_DEFAULT = 0, /* backward compat, should not be used. */
- NR_REG_ALL_NIC = 1,
- NR_REG_SW = 2,
- NR_REG_NIC_SW = 3,
- NR_REG_ONE_NIC = 4,
- NR_REG_PIPE_MASTER = 5,
- NR_REG_PIPE_SLAVE = 6,
-};
-/* monitor uses the NR_REG to select the rings to monitor */
-#define NR_MONITOR_TX 0x100
-#define NR_MONITOR_RX 0x200
-#define NR_ZCOPY_MON 0x400
-/* request exclusive access to the selected rings */
-#define NR_EXCLUSIVE 0x800
-/* request ptnetmap host support */
-#define NR_PASSTHROUGH_HOST NR_PTNETMAP_HOST /* deprecated */
-#define NR_PTNETMAP_HOST 0x1000
-#define NR_RX_RINGS_ONLY 0x2000
-#define NR_TX_RINGS_ONLY 0x4000
-/* Applications set this flag if they are able to deal with virtio-net headers,
- * that is send/receive frames that start with a virtio-net header.
- * If not set, NIOCREGIF will fail with netmap ports that require applications
- * to use those headers. If the flag is set, the application can use the
- * NETMAP_VNET_HDR_GET command to figure out the header length. */
-#define NR_ACCEPT_VNET_HDR 0x8000
-
-
-/*
- * Windows does not have _IOWR(). _IO(), _IOW() and _IOR() are defined
- * in ws2def.h but not sure if they are in the form we need.
- * XXX so we redefine them
- * in a convenient way to use for DeviceIoControl signatures
- */
-#ifdef _WIN32
-#undef _IO // ws2def.h
-#define _WIN_NM_IOCTL_TYPE 40000
-#define _IO(_c, _n) CTL_CODE(_WIN_NM_IOCTL_TYPE, ((_n) + 0x800) , \
- METHOD_BUFFERED, FILE_ANY_ACCESS )
-#define _IO_direct(_c, _n) CTL_CODE(_WIN_NM_IOCTL_TYPE, ((_n) + 0x800) , \
- METHOD_OUT_DIRECT, FILE_ANY_ACCESS )
-
-#define _IOWR(_c, _n, _s) _IO(_c, _n)
-
-/* We havesome internal sysctl in addition to the externally visible ones */
-#define NETMAP_MMAP _IO_direct('i', 160) // note METHOD_OUT_DIRECT
-#define NETMAP_POLL _IO('i', 162)
-
-/* and also two setsockopt for sysctl emulation */
-#define NETMAP_SETSOCKOPT _IO('i', 140)
-#define NETMAP_GETSOCKOPT _IO('i', 141)
-
-
-//These linknames are for the Netmap Core Driver
-#define NETMAP_NT_DEVICE_NAME L"\\Device\\NETMAP"
-#define NETMAP_DOS_DEVICE_NAME L"\\DosDevices\\netmap"
-
-//Definition of a structure used to pass a virtual address within an IOCTL
-typedef struct _MEMORY_ENTRY {
- PVOID pUsermodeVirtualAddress;
-} MEMORY_ENTRY, *PMEMORY_ENTRY;
-
-typedef struct _POLL_REQUEST_DATA {
- int events;
- int timeout;
- int revents;
-} POLL_REQUEST_DATA;
-
-#endif /* _WIN32 */
-
-/*
- * FreeBSD uses the size value embedded in the _IOWR to determine
- * how much to copy in/out. So we need it to match the actual
- * data structure we pass. We put some spares in the structure
- * to ease compatibility with other versions
- */
-#define NIOCGINFO _IOWR('i', 145, struct nmreq) /* return IF info */
-#define NIOCREGIF _IOWR('i', 146, struct nmreq) /* interface register */
-#define NIOCTXSYNC _IO('i', 148) /* sync tx queues */
-#define NIOCRXSYNC _IO('i', 149) /* sync rx queues */
-#define NIOCCONFIG _IOWR('i',150, struct nm_ifreq) /* for ext. modules */
-#endif /* !NIOCREGIF */
-
-
-/*
- * Helper functions for kernel and userspace
- */
-
-/*
- * check if space is available in the ring.
- */
-static inline int
-nm_ring_empty(struct netmap_ring *ring)
-{
- return (ring->cur == ring->tail);
-}
-
-/*
- * Opaque structure that is passed to an external kernel
- * module via ioctl(fd, NIOCCONFIG, req) for a user-owned
- * bridge port (at this point ephemeral VALE interface).
- */
-#define NM_IFRDATA_LEN 256
-struct nm_ifreq {
- char nifr_name[IFNAMSIZ];
- char data[NM_IFRDATA_LEN];
-};
-
-/*
- * netmap kernel thread configuration
- */
-/* bhyve/vmm.ko MSIX parameters for IOCTL */
-struct ptn_vmm_ioctl_msix {
- uint64_t msg;
- uint64_t addr;
-};
-
-/* IOCTL parameters */
-struct nm_kth_ioctl {
- u_long com;
- /* TODO: use union */
- union {
- struct ptn_vmm_ioctl_msix msix;
- } data;
-};
-
-/* Configuration of a ptnetmap ring */
-struct ptnet_ring_cfg {
- uint64_t ioeventfd; /* eventfd in linux, tsleep() parameter in FreeBSD */
- uint64_t irqfd; /* eventfd in linux, ioctl fd in FreeBSD */
- struct nm_kth_ioctl ioctl; /* ioctl parameter to send irq (only used in bhyve/FreeBSD) */
-};
-#endif /* _NET_NETMAP_H_ */
diff --git a/src/vnet/devices/netmap/netmap.api b/src/vnet/devices/netmap/netmap.api
deleted file mode 100644
index a14753cad9c..00000000000
--- a/src/vnet/devices/netmap/netmap.api
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (c) 2015-2016 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.
- */
-
-option version = "1.0.0";
-
-/** \brief Create netmap
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param netmap_if_name - interface name
- @param hw_addr - interface MAC
- @param use_random_hw_addr - use random generated MAC
- @param is_pipe - is pipe
- @param is_master - 0=slave, 1=master
-*/
-autoreply define netmap_create
-{
- u32 client_index;
- u32 context;
-
- u8 netmap_if_name[64];
- u8 hw_addr[6];
- u8 use_random_hw_addr;
- u8 is_pipe;
- u8 is_master;
-};
-
-/** \brief Delete netmap
- @param client_index - opaque cookie to identify the sender
- @param context - sender context, to match reply w/ request
- @param netmap_if_name - interface name
-*/
-autoreply define netmap_delete
-{
- u32 client_index;
- u32 context;
-
- u8 netmap_if_name[64];
-};
-
-/*
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/netmap/netmap.c b/src/vnet/devices/netmap/netmap.c
deleted file mode 100644
index 03d96216bb0..00000000000
--- a/src/vnet/devices/netmap/netmap.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/*
- *------------------------------------------------------------------
- * 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 <sys/types.h>
-#include <fcntl.h>
-#include <vnet/devices/netmap/net_netmap.h>
-
-#include <vlib/vlib.h>
-#include <vlib/unix/unix.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/devices/netmap/netmap.h>
-
-netmap_main_t netmap_main;
-
-static u32
-netmap_eth_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi,
- u32 flags)
-{
- /* nothing for now */
- return 0;
-}
-
-static clib_error_t *
-netmap_fd_read_ready (clib_file_t * uf)
-{
- vlib_main_t *vm = vlib_get_main ();
- netmap_main_t *nm = &netmap_main;
- u32 idx = uf->private_data;
-
- nm->pending_input_bitmap =
- clib_bitmap_set (nm->pending_input_bitmap, idx, 1);
-
- /* Schedule the rx node */
- vlib_node_set_interrupt_pending (vm, netmap_input_node.index);
-
- return 0;
-}
-
-static void
-close_netmap_if (netmap_main_t * nm, netmap_if_t * nif)
-{
- if (nif->clib_file_index != ~0)
- {
- clib_file_del (&file_main, file_main.file_pool + nif->clib_file_index);
- nif->clib_file_index = ~0;
- }
- else if (nif->fd > -1)
- close (nif->fd);
-
- if (nif->mem_region)
- {
- netmap_mem_region_t *reg = &nm->mem_regions[nif->mem_region];
- if (--reg->refcnt == 0)
- {
- munmap (reg->mem, reg->region_size);
- reg->region_size = 0;
- }
- }
-
-
- mhash_unset (&nm->if_index_by_host_if_name, nif->host_if_name,
- &nif->if_index);
- vec_free (nif->host_if_name);
- vec_free (nif->req);
-
- clib_memset (nif, 0, sizeof (*nif));
- pool_put (nm->interfaces, nif);
-}
-
-int
-netmap_worker_thread_enable ()
-{
- /* if worker threads are enabled, switch to polling mode */
- foreach_vlib_main ((
- {
- vlib_node_set_state (this_vlib_main,
- netmap_input_node.index,
- VLIB_NODE_STATE_POLLING);
- }));
-
- return 0;
-}
-
-int
-netmap_worker_thread_disable ()
-{
- foreach_vlib_main ((
- {
- vlib_node_set_state (this_vlib_main,
- netmap_input_node.index,
- VLIB_NODE_STATE_INTERRUPT);
- }));
-
- return 0;
-}
-
-int
-netmap_create_if (vlib_main_t * vm, u8 * if_name, u8 * hw_addr_set,
- u8 is_pipe, u8 is_master, u32 * sw_if_index)
-{
- netmap_main_t *nm = &netmap_main;
- int ret = 0;
- netmap_if_t *nif = 0;
- u8 hw_addr[6];
- clib_error_t *error = 0;
- vnet_sw_interface_t *sw;
- vnet_main_t *vnm = vnet_get_main ();
- uword *p;
- struct nmreq *req = 0;
- netmap_mem_region_t *reg;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- int fd;
-
- p = mhash_get (&nm->if_index_by_host_if_name, if_name);
- if (p)
- return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
-
- fd = open ("/dev/netmap", O_RDWR);
- if (fd < 0)
- return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
-
- pool_get (nm->interfaces, nif);
- nif->if_index = nif - nm->interfaces;
- nif->fd = fd;
- nif->clib_file_index = ~0;
-
- vec_validate (req, 0);
- nif->req = req;
- req->nr_version = NETMAP_API;
- req->nr_flags = NR_REG_ALL_NIC;
-
- if (is_pipe)
- req->nr_flags = is_master ? NR_REG_PIPE_MASTER : NR_REG_PIPE_SLAVE;
- else
- req->nr_flags = NR_REG_ALL_NIC;
-
- req->nr_flags |= NR_ACCEPT_VNET_HDR;
- snprintf (req->nr_name, IFNAMSIZ, "%s", if_name);
- req->nr_name[IFNAMSIZ - 1] = 0;
-
- if (ioctl (nif->fd, NIOCREGIF, req))
- {
- ret = VNET_API_ERROR_NOT_CONNECTED;
- goto error;
- }
-
- nif->mem_region = req->nr_arg2;
- vec_validate (nm->mem_regions, nif->mem_region);
- reg = &nm->mem_regions[nif->mem_region];
- if (reg->region_size == 0)
- {
- reg->mem = mmap (NULL, req->nr_memsize, PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, 0);
- clib_warning ("mem %p", reg->mem);
- if (reg->mem == MAP_FAILED)
- {
- ret = VNET_API_ERROR_NOT_CONNECTED;
- goto error;
- }
- reg->region_size = req->nr_memsize;
- }
- reg->refcnt++;
-
- nif->nifp = NETMAP_IF (reg->mem, req->nr_offset);
- nif->first_rx_ring = 0;
- nif->last_rx_ring = 0;
- nif->first_tx_ring = 0;
- nif->last_tx_ring = 0;
- nif->host_if_name = if_name;
- nif->per_interface_next_index = ~0;
-
- if (tm->n_vlib_mains > 1)
- clib_spinlock_init (&nif->lockp);
-
- {
- clib_file_t template = { 0 };
- template.read_function = netmap_fd_read_ready;
- template.file_descriptor = nif->fd;
- template.private_data = nif->if_index;
- nif->clib_file_index = clib_file_add (&file_main, &template);
- }
-
- /*use configured or generate random MAC address */
- if (hw_addr_set)
- memcpy (hw_addr, hw_addr_set, 6);
- else
- {
- f64 now = vlib_time_now (vm);
- u32 rnd;
- rnd = (u32) (now * 1e6);
- rnd = random_u32 (&rnd);
-
- memcpy (hw_addr + 2, &rnd, sizeof (rnd));
- hw_addr[0] = 2;
- hw_addr[1] = 0xfe;
- }
-
- error = ethernet_register_interface (vnm, netmap_device_class.index,
- nif->if_index, hw_addr,
- &nif->hw_if_index,
- netmap_eth_flag_change);
-
- if (error)
- {
- clib_error_report (error);
- ret = VNET_API_ERROR_SYSCALL_ERROR_1;
- goto error;
- }
-
- sw = vnet_get_hw_sw_interface (vnm, nif->hw_if_index);
- nif->sw_if_index = sw->sw_if_index;
-
- mhash_set_mem (&nm->if_index_by_host_if_name, if_name, &nif->if_index, 0);
-
- if (sw_if_index)
- *sw_if_index = nif->sw_if_index;
-
- if (tm->n_vlib_mains > 1 && pool_elts (nm->interfaces) == 1)
- netmap_worker_thread_enable ();
-
- return 0;
-
-error:
- close_netmap_if (nm, nif);
- return ret;
-}
-
-int
-netmap_delete_if (vlib_main_t * vm, u8 * host_if_name)
-{
- vnet_main_t *vnm = vnet_get_main ();
- netmap_main_t *nm = &netmap_main;
- netmap_if_t *nif;
- uword *p;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
-
- p = mhash_get (&nm->if_index_by_host_if_name, host_if_name);
- if (p == NULL)
- {
- clib_warning ("Host interface %s does not exist", host_if_name);
- return VNET_API_ERROR_SYSCALL_ERROR_1;
- }
- nif = pool_elt_at_index (nm->interfaces, p[0]);
-
- /* bring down the interface */
- vnet_hw_interface_set_flags (vnm, nif->hw_if_index, 0);
-
- ethernet_delete_interface (vnm, nif->hw_if_index);
-
- close_netmap_if (nm, nif);
-
- if (tm->n_vlib_mains > 1 && pool_elts (nm->interfaces) == 0)
- netmap_worker_thread_disable ();
-
- return 0;
-}
-
-static clib_error_t *
-netmap_init (vlib_main_t * vm)
-{
- netmap_main_t *nm = &netmap_main;
- vlib_thread_main_t *tm = vlib_get_thread_main ();
- vlib_thread_registration_t *tr;
- uword *p;
-
- clib_memset (nm, 0, sizeof (netmap_main_t));
-
- nm->input_cpu_first_index = 0;
- nm->input_cpu_count = 1;
-
- /* find out which cpus will be used for input */
- p = hash_get_mem (tm->thread_registrations_by_name, "workers");
- tr = p ? (vlib_thread_registration_t *) p[0] : 0;
-
- if (tr && tr->count > 0)
- {
- nm->input_cpu_first_index = tr->first_index;
- nm->input_cpu_count = tr->count;
- }
-
- mhash_init_vec_string (&nm->if_index_by_host_if_name, sizeof (uword));
-
- vec_validate_aligned (nm->rx_buffers, tm->n_vlib_mains - 1,
- CLIB_CACHE_LINE_BYTES);
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (netmap_init);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/netmap/netmap.h b/src/vnet/devices/netmap/netmap.h
deleted file mode 100644
index 29f855fda8e..00000000000
--- a/src/vnet/devices/netmap/netmap.h
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- *------------------------------------------------------------------
- * 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.
- *------------------------------------------------------------------
- */
-/*
- * Copyright (C) 2011-2014 Universita` di Pisa. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <vppinfra/lock.h>
-
-typedef struct
-{
- CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
- clib_spinlock_t lockp;
- u8 *host_if_name;
- uword if_index;
- u32 hw_if_index;
- u32 sw_if_index;
- u32 clib_file_index;
-
- u32 per_interface_next_index;
- u8 is_admin_up;
-
- /* netmap */
- struct nmreq *req;
- u16 mem_region;
- int fd;
- struct netmap_if *nifp;
- u16 first_tx_ring;
- u16 last_tx_ring;
- u16 first_rx_ring;
- u16 last_rx_ring;
-
-} netmap_if_t;
-
-typedef struct
-{
- char *mem;
- u32 region_size;
- int refcnt;
-} netmap_mem_region_t;
-
-typedef struct
-{
- CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
- netmap_if_t *interfaces;
-
- /* bitmap of pending rx interfaces */
- uword *pending_input_bitmap;
-
- /* rx buffer cache */
- u32 **rx_buffers;
-
- /* hash of host interface names */
- mhash_t if_index_by_host_if_name;
-
- /* vector of memory regions */
- netmap_mem_region_t *mem_regions;
-
- /* first cpu index */
- u32 input_cpu_first_index;
-
- /* total cpu count */
- u32 input_cpu_count;
-} netmap_main_t;
-
-extern netmap_main_t netmap_main;
-extern vnet_device_class_t netmap_device_class;
-extern vlib_node_registration_t netmap_input_node;
-
-int netmap_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
- u8 is_pipe, u8 is_master, u32 * sw_if_index);
-int netmap_delete_if (vlib_main_t * vm, u8 * host_if_name);
-
-
-/* Macros and helper functions from sys/net/netmap_user.h */
-
-#ifdef _NET_NETMAP_H_
-
-#define _NETMAP_OFFSET(type, ptr, offset) \
- ((type)(void *)((char *)(ptr) + (offset)))
-
-#define NETMAP_IF(_base, _ofs) _NETMAP_OFFSET(struct netmap_if *, _base, _ofs)
-
-#define NETMAP_TXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
- nifp, (nifp)->ring_ofs[index] )
-
-#define NETMAP_RXRING(nifp, index) _NETMAP_OFFSET(struct netmap_ring *, \
- nifp, (nifp)->ring_ofs[index + (nifp)->ni_tx_rings + 1] )
-
-#define NETMAP_BUF(ring, index) \
- ((char *)(ring) + (ring)->buf_ofs + ((index)*(ring)->nr_buf_size))
-
-#define NETMAP_BUF_IDX(ring, buf) \
- ( ((char *)(buf) - ((char *)(ring) + (ring)->buf_ofs) ) / \
- (ring)->nr_buf_size )
-
-static inline uint32_t
-nm_ring_next (struct netmap_ring *ring, uint32_t i)
-{
- return (PREDICT_FALSE (i + 1 == ring->num_slots) ? 0 : i + 1);
-}
-
-
-/*
- * Return 1 if we have pending transmissions in the tx ring.
- * When everything is complete ring->head = ring->tail + 1 (modulo ring size)
- */
-static inline int
-nm_tx_pending (struct netmap_ring *ring)
-{
- return nm_ring_next (ring, ring->tail) != ring->head;
-}
-
-static inline uint32_t
-nm_ring_space (struct netmap_ring *ring)
-{
- int ret = ring->tail - ring->cur;
- if (ret < 0)
- ret += ring->num_slots;
- return ret;
-}
-#endif
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/netmap/netmap_api.c b/src/vnet/devices/netmap/netmap_api.c
deleted file mode 100644
index ee05ec22d25..00000000000
--- a/src/vnet/devices/netmap/netmap_api.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- *------------------------------------------------------------------
- * netmap_api.c - netmap api
- *
- * 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 <vnet/vnet.h>
-#include <vlibmemory/api.h>
-
-#include <vnet/interface.h>
-#include <vnet/api_errno.h>
-#include <vnet/devices/netmap/netmap.h>
-
-#include <vnet/vnet_msg_enum.h>
-
-#define vl_typedefs /* define message structures */
-#include <vnet/vnet_all_api_h.h>
-#undef vl_typedefs
-
-#define vl_endianfun /* define message structures */
-#include <vnet/vnet_all_api_h.h>
-#undef vl_endianfun
-
-/* instantiate all the print functions we know about */
-#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
-#define vl_printfun
-#include <vnet/vnet_all_api_h.h>
-#undef vl_printfun
-
-#include <vlibapi/api_helper_macros.h>
-
-#define foreach_vpe_api_msg \
-_(NETMAP_CREATE, netmap_create) \
-_(NETMAP_DELETE, netmap_delete) \
-
-static void
-vl_api_netmap_create_t_handler (vl_api_netmap_create_t * mp)
-{
- vlib_main_t *vm = vlib_get_main ();
- vl_api_netmap_create_reply_t *rmp;
- int rv = 0;
- u8 *if_name = NULL;
-
- if_name = format (0, "%s", mp->netmap_if_name);
- vec_add1 (if_name, 0);
-
- rv =
- netmap_create_if (vm, if_name, mp->use_random_hw_addr ? 0 : mp->hw_addr,
- mp->is_pipe, mp->is_master, 0);
-
- vec_free (if_name);
-
- REPLY_MACRO (VL_API_NETMAP_CREATE_REPLY);
-}
-
-static void
-vl_api_netmap_delete_t_handler (vl_api_netmap_delete_t * mp)
-{
- vlib_main_t *vm = vlib_get_main ();
- vl_api_netmap_delete_reply_t *rmp;
- int rv = 0;
- u8 *if_name = NULL;
-
- if_name = format (0, "%s", mp->netmap_if_name);
- vec_add1 (if_name, 0);
-
- rv = netmap_delete_if (vm, if_name);
-
- vec_free (if_name);
-
- REPLY_MACRO (VL_API_NETMAP_DELETE_REPLY);
-}
-
-/*
- * netmap_api_hookup
- * Add vpe's API message handlers to the table.
- * vlib has already mapped shared memory and
- * added the client registration handlers.
- * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
- */
-#define vl_msg_name_crc_list
-#include <vnet/vnet_all_api_h.h>
-#undef vl_msg_name_crc_list
-
-static void
-setup_message_id_table (api_main_t * am)
-{
-#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
- foreach_vl_msg_name_crc_netmap;
-#undef _
-}
-
-static clib_error_t *
-netmap_api_hookup (vlib_main_t * vm)
-{
- api_main_t *am = vlibapi_get_main ();
-
-#define _(N,n) \
- vl_msg_api_set_handlers(VL_API_##N, #n, \
- vl_api_##n##_t_handler, \
- vl_noop_handler, \
- vl_api_##n##_t_endian, \
- vl_api_##n##_t_print, \
- sizeof(vl_api_##n##_t), 1);
- foreach_vpe_api_msg;
-#undef _
-
- /*
- * Set up the (msg_name, crc, message-id) table
- */
- setup_message_id_table (am);
-
- return 0;
-}
-
-VLIB_API_INIT_FUNCTION (netmap_api_hookup);
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
diff --git a/src/vnet/devices/netmap/node.c b/src/vnet/devices/netmap/node.c
deleted file mode 100644
index bc55ecc8eb1..00000000000
--- a/src/vnet/devices/netmap/node.c
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- *------------------------------------------------------------------
- * 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/devices.h>
-#include <vnet/feature/feature.h>
-
-#include <vnet/devices/netmap/net_netmap.h>
-#include <vnet/devices/netmap/netmap.h>
-
-#define foreach_netmap_input_error
-
-typedef enum
-{
-#define _(f,s) NETMAP_INPUT_ERROR_##f,
- foreach_netmap_input_error
-#undef _
- NETMAP_INPUT_N_ERROR,
-} netmap_input_error_t;
-
-static char *netmap_input_error_strings[] = {
-#define _(n,s) s,
- foreach_netmap_input_error
-#undef _
-};
-
-typedef struct
-{
- u32 next_index;
- u32 hw_if_index;
- struct netmap_slot slot;
-} netmap_input_trace_t;
-
-static u8 *
-format_netmap_input_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- netmap_input_trace_t *t = va_arg (*args, netmap_input_trace_t *);
- u32 indent = format_get_indent (s);
-
- s = format (s, "netmap: hw_if_index %d next-index %d",
- t->hw_if_index, t->next_index);
- s = format (s, "\n%Uslot: flags 0x%x len %u buf_idx %u",
- format_white_space, indent + 2,
- t->slot.flags, t->slot.len, t->slot.buf_idx);
- return s;
-}
-
-always_inline void
-buffer_add_to_chain (vlib_main_t * vm, u32 bi, u32 first_bi, u32 prev_bi)
-{
- vlib_buffer_t *b = vlib_get_buffer (vm, bi);
- vlib_buffer_t *first_b = vlib_get_buffer (vm, first_bi);
- vlib_buffer_t *prev_b = vlib_get_buffer (vm, prev_bi);
-
- /* update first buffer */
- first_b->total_length_not_including_first_buffer += b->current_length;
-
- /* update previous buffer */
- prev_b->next_buffer = bi;
- prev_b->flags |= VLIB_BUFFER_NEXT_PRESENT;
-
- /* update current buffer */
- b->next_buffer = 0;
-}
-
-always_inline uword
-netmap_device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame, netmap_if_t * nif)
-{
- u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
- uword n_trace = vlib_get_trace_count (vm, node);
- netmap_main_t *nm = &netmap_main;
- u32 n_rx_packets = 0;
- u32 n_rx_bytes = 0;
- u32 *to_next = 0;
- u32 n_free_bufs;
- struct netmap_ring *ring;
- int cur_ring;
- u32 thread_index = vm->thread_index;
- u32 n_buffer_bytes = vlib_buffer_get_default_data_size (vm);
-
- if (nif->per_interface_next_index != ~0)
- next_index = nif->per_interface_next_index;
-
- n_free_bufs = vec_len (nm->rx_buffers[thread_index]);
- if (PREDICT_FALSE (n_free_bufs < VLIB_FRAME_SIZE))
- {
- vec_validate (nm->rx_buffers[thread_index],
- VLIB_FRAME_SIZE + n_free_bufs - 1);
- n_free_bufs +=
- vlib_buffer_alloc (vm, &nm->rx_buffers[thread_index][n_free_bufs],
- VLIB_FRAME_SIZE);
- _vec_len (nm->rx_buffers[thread_index]) = n_free_bufs;
- }
-
- cur_ring = nif->first_rx_ring;
- while (cur_ring <= nif->last_rx_ring && n_free_bufs)
- {
- int r = 0;
- u32 cur_slot_index;
- ring = NETMAP_RXRING (nif->nifp, cur_ring);
- r = nm_ring_space (ring);
-
- if (!r)
- {
- cur_ring++;
- continue;
- }
-
- if (r > n_free_bufs)
- r = n_free_bufs;
-
- cur_slot_index = ring->cur;
- while (r)
- {
- u32 n_left_to_next;
- u32 next0 = next_index;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (r && n_left_to_next)
- {
- vlib_buffer_t *first_b0 = 0;
- u32 offset = 0;
- u32 bi0 = 0, first_bi0 = 0, prev_bi0;
- u32 next_slot_index = (cur_slot_index + 1) % ring->num_slots;
- u32 next2_slot_index = (cur_slot_index + 2) % ring->num_slots;
- struct netmap_slot *slot = &ring->slot[cur_slot_index];
- u32 data_len = slot->len;
-
- /* prefetch 2 slots in advance */
- CLIB_PREFETCH (&ring->slot[next2_slot_index],
- CLIB_CACHE_LINE_BYTES, LOAD);
- /* prefetch start of next packet */
- CLIB_PREFETCH (NETMAP_BUF
- (ring, ring->slot[next_slot_index].buf_idx),
- CLIB_CACHE_LINE_BYTES, LOAD);
-
- while (data_len && n_free_bufs)
- {
- vlib_buffer_t *b0;
- /* grab free buffer */
- u32 last_empty_buffer =
- vec_len (nm->rx_buffers[thread_index]) - 1;
- prev_bi0 = bi0;
- bi0 = nm->rx_buffers[thread_index][last_empty_buffer];
- b0 = vlib_get_buffer (vm, bi0);
- _vec_len (nm->rx_buffers[thread_index]) = last_empty_buffer;
- n_free_bufs--;
-
- /* copy data */
- u32 bytes_to_copy =
- data_len > n_buffer_bytes ? n_buffer_bytes : data_len;
- b0->current_data = 0;
- clib_memcpy_fast (vlib_buffer_get_current (b0),
- (u8 *) NETMAP_BUF (ring, slot->buf_idx) +
- offset, bytes_to_copy);
-
- /* fill buffer header */
- b0->current_length = bytes_to_copy;
-
- if (offset == 0)
- {
- b0->total_length_not_including_first_buffer = 0;
- b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
- vnet_buffer (b0)->sw_if_index[VLIB_RX] =
- nif->sw_if_index;
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- first_bi0 = bi0;
- first_b0 = vlib_get_buffer (vm, first_bi0);
- }
- else
- buffer_add_to_chain (vm, bi0, first_bi0, prev_bi0);
-
- offset += bytes_to_copy;
- data_len -= bytes_to_copy;
- }
-
- /* trace */
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0);
- if (PREDICT_FALSE (n_trace > 0))
- {
- if (PREDICT_TRUE (first_b0 != 0))
- {
- netmap_input_trace_t *tr;
- vlib_trace_buffer (vm, node, next0, first_b0,
- /* follow_chain */ 0);
- vlib_set_trace_count (vm, node, --n_trace);
- tr = vlib_add_trace (vm, node, first_b0, sizeof (*tr));
- tr->next_index = next0;
- tr->hw_if_index = nif->hw_if_index;
- memcpy (&tr->slot, slot, sizeof (struct netmap_slot));
- }
- }
-
- /* redirect if feature path enabled */
- vnet_feature_start_device_input_x1 (nif->sw_if_index, &next0,
- first_b0);
-
- /* enque and take next packet */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, first_bi0,
- next0);
-
- /* next packet */
- n_rx_packets++;
- n_rx_bytes += slot->len;
- to_next[0] = first_bi0;
- to_next += 1;
- n_left_to_next--;
- cur_slot_index = next_slot_index;
-
- r--;
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
- ring->head = ring->cur = cur_slot_index;
- cur_ring++;
- }
-
- if (n_rx_packets)
- ioctl (nif->fd, NIOCRXSYNC, NULL);
-
- vlib_increment_combined_counter
- (vnet_get_main ()->interface_main.combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_RX,
- vlib_get_thread_index (), nif->hw_if_index, n_rx_packets, n_rx_bytes);
-
- vnet_device_increment_rx_packets (thread_index, n_rx_packets);
-
- return n_rx_packets;
-}
-
-VLIB_NODE_FN (netmap_input_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- int i;
- u32 n_rx_packets = 0;
- u32 thread_index = vm->thread_index;
- netmap_main_t *nm = &netmap_main;
- netmap_if_t *nmi;
-
- for (i = 0; i < vec_len (nm->interfaces); i++)
- {
- nmi = vec_elt_at_index (nm->interfaces, i);
- if (nmi->is_admin_up &&
- (i % nm->input_cpu_count) ==
- (thread_index - nm->input_cpu_first_index))
- n_rx_packets += netmap_device_input_fn (vm, node, frame, nmi);
- }
-
- return n_rx_packets;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (netmap_input_node) = {
- .name = "netmap-input",
- .sibling_of = "device-input",
- .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
- .format_trace = format_netmap_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 = NETMAP_INPUT_N_ERROR,
- .error_strings = netmap_input_error_strings,
-};
-/* *INDENT-ON* */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */