nat: remove unused code - vpp - Vector Packet Processing

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author	Klement Sekera <ksekera@cisco.com>	2020-06-18 12:48:42 +0000
committer	Damjan Marion <dmarion@me.com>	2020-06-19 06:59:42 +0000
commit	fb4df27faecde54e610d41a84d9ee71234347316 (patch)
tree	7f3f14c1bff1593f6d031ce743233baebfacaa5c /Makefile
parent	70a9f442f5206c34b7b4058fd3cc5e46c0d0fbf3 (diff)

nat: remove unused code

Type: refactor Signed-off-by: Klement Sekera <ksekera@cisco.com> Change-Id: Icc55276c8a4c256049718610cb131a34dc8d0a80

Diffstat (limited to 'Makefile')

0 files changed, 0 insertions, 0 deletions

/* *------------------------------------------------------------------ * 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. *------------------------------------------------------------------ */ #define _GNU_SOURCE #include <stdint.h> #include <net/if.h> #include <sys/ioctl.h> #include <sys/uio.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 <memif/memif.h> #include <memif/private.h> #define foreach_memif_input_error \ _(NOT_IP, "not ip packet") typedef enum { #define _(f,s) MEMIF_INPUT_ERROR_##f, foreach_memif_input_error #undef _ MEMIF_INPUT_N_ERROR, } memif_input_error_t; static __clib_unused char *memif_input_error_strings[] = { #define _(n,s) s, foreach_memif_input_error #undef _ }; typedef struct { u32 next_index; u32 hw_if_index; u16 ring; } memif_input_trace_t; static __clib_unused u8 * format_memif_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 *); memif_input_trace_t *t = va_arg (*args, memif_input_trace_t *); u32 indent = format_get_indent (s); s = format (s, "memif: hw_if_index %d next-index %d", t->hw_if_index, t->next_index); s = format (s, "\n%Uslot: ring %u", format_white_space, indent + 2, t->ring); return s; } static_always_inline void memif_prefetch (vlib_main_t * vm, u32 bi) { vlib_buffer_t *b = vlib_get_buffer (vm, bi); vlib_prefetch_buffer_header (b, STORE); CLIB_PREFETCH (b->data, CLIB_CACHE_LINE_BYTES, STORE); } static_always_inline void memif_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; } /** * @brief Copy buffer from rx ring * * @param * vm (in) * @param * mif (in) pointer to memif interface * @param * ring (in) pointer to memif ring * @param * rd (in) pointer to ring data * @param ring_size (in) ring size * @param * n_free_bufs (in/out) the number of free vlib buffers available * @param ** first_b (out) the first vlib buffer pointer * @param * first_bi (out) the first vlib buffer index * @param * bi (in/out) the current buffer index * #param * num_slots (in/out) the number of descriptors available to read * * @return total bytes read from rx ring also written to vlib buffers */ static_always_inline uword memif_copy_buffer_from_rx_ring (vlib_main_t * vm, memif_if_t * mif, memif_ring_t * ring, memif_queue_t * mq, u16 ring_size, u32 n_buffer_bytes, u32 * n_free_bufs, vlib_buffer_t ** first_b, u32 * first_bi, u32 * bi, u16 * num_slots) { memif_main_t *nm = &memif_main; u32 thread_index = vlib_get_thread_index (); u32 total_bytes = 0, offset = 0; u32 data_len; u32 bytes_to_copy; void *mb; vlib_buffer_t *b; u16 mask = ring_size - 1; u32 prev_bi; u16 last_head; while (*num_slots) { data_len = ring->desc[mq->last_head & mask].length; while (data_len && (*n_free_bufs)) { /* get empty buffer */ u32 last_buf = vec_len (nm->rx_buffers[thread_index]) - 1; prev_bi = *bi; *bi = nm->rx_buffers[thread_index][last_buf]; b = vlib_get_buffer (vm, *bi); _vec_len (nm->rx_buffers[thread_index]) = last_buf; (*n_free_bufs)--; if (PREDICT_FALSE (*n_free_bufs == 0)) { *n_free_bufs += vlib_buffer_alloc (vm, &nm->rx_buffers[thread_index] [*n_free_bufs], ring_size); _vec_len (nm->rx_buffers[thread_index]) = *n_free_bufs; } if (last_buf > 4) { memif_prefetch (vm, nm->rx_buffers[thread_index][last_buf - 2]); memif_prefetch (vm, nm->rx_buffers[thread_index][last_buf - 3]); } /* copy buffer */ bytes_to_copy = data_len > n_buffer_bytes ? n_buffer_bytes : data_len; b->current_data = 0; mb = memif_get_buffer (mif, ring, mq->last_head & mask); clib_memcpy (vlib_buffer_get_current (b), mb + offset, CLIB_CACHE_LINE_BYTES); if (bytes_to_copy > CLIB_CACHE_LINE_BYTES) clib_memcpy (vlib_buffer_get_current (b) + CLIB_CACHE_LINE_BYTES, mb + CLIB_CACHE_LINE_BYTES + offset, bytes_to_copy - CLIB_CACHE_LINE_BYTES); /* fill buffer header */ b->current_length = bytes_to_copy; if (total_bytes == 0) { /* fill buffer metadata */ b->total_length_not_including_first_buffer = 0; b->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; vnet_buffer (b)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0; *first_bi = *bi; *first_b = vlib_get_buffer (vm, *first_bi); } else memif_buffer_add_to_chain (vm, *bi, *first_bi, prev_bi); offset += bytes_to_copy; total_bytes += bytes_to_copy; data_len -= bytes_to_copy; } last_head = mq->last_head; /* Advance to next descriptor */ mq->last_head++; offset = 0; (*num_slots)--; if ((ring->desc[last_head & mask].flags & MEMIF_DESC_FLAG_NEXT) == 0) break; } return (total_bytes); } static_always_inline u32 memif_next_from_ip_hdr (vlib_node_runtime_t * node, vlib_buffer_t * b) { u8 *ptr = vlib_buffer_get_current (b); u8 v = *ptr & 0xf0; if (PREDICT_TRUE (v == 0x40)) return VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT; else if (PREDICT_TRUE (v == 0x60)) return VNET_DEVICE_INPUT_NEXT_IP6_INPUT; b->error = node->errors[MEMIF_INPUT_ERROR_NOT_IP]; return VNET_DEVICE_INPUT_NEXT_DROP; } static_always_inline uword memif_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, memif_if_t * mif, memif_ring_type_t type, u16 qid, memif_interface_mode_t mode) { vnet_main_t *vnm = vnet_get_main (); memif_ring_t *ring; memif_queue_t *mq; u16 head; u32 next_index; uword n_trace = vlib_get_trace_count (vm, node); memif_main_t *nm = &memif_main; u32 n_rx_packets = 0; u32 n_rx_bytes = 0; u32 *to_next = 0; u32 n_free_bufs; u32 b0_total, b1_total; u32 thread_index = vlib_get_thread_index (); u16 ring_size, mask, num_slots; u32 n_buffer_bytes = vlib_buffer_free_list_buffer_size (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); mq = vec_elt_at_index (mif->rx_queues, qid); ring = mq->ring; ring_size = 1 << mq->log2_ring_size; mask = ring_size - 1; if (mode == MEMIF_INTERFACE_MODE_IP) { next_index = VNET_DEVICE_INPUT_NEXT_IP6_INPUT; } else { next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; } n_free_bufs = vec_len (nm->rx_buffers[thread_index]); if (PREDICT_FALSE (n_free_bufs < ring_size)) { vec_validate (nm->rx_buffers[thread_index], ring_size + n_free_bufs - 1); n_free_bufs += vlib_buffer_alloc (vm, &nm->rx_buffers[thread_index][n_free_bufs], ring_size); _vec_len (nm->rx_buffers[thread_index]) = n_free_bufs; } head = ring->head; if (head == mq->last_head) return 0; num_slots = head - mq->last_head; while (num_slots) { u32 n_left_to_next; u32 next0 = next_index; u32 next1 = next_index; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (num_slots > 11 && n_left_to_next > 2) { CLIB_PREFETCH (memif_get_buffer (mif, ring, (mq->last_head + 2) & mask), CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (memif_get_buffer (mif, ring, (mq->last_head + 3) & mask), CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (&ring->desc[(mq->last_head + 4) & mask], CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (&ring->desc[(mq->last_head + 5) & mask], CLIB_CACHE_LINE_BYTES, LOAD); vlib_buffer_t *first_b0 = 0; u32 bi0 = 0, first_bi0 = 0; b0_total = memif_copy_buffer_from_rx_ring (vm, mif, ring, mq, ring_size, n_buffer_bytes, &n_free_bufs, &first_b0, &first_bi0, &bi0, &num_slots); vlib_buffer_t *first_b1 = 0; u32 bi1 = 0, first_bi1 = 0; b1_total = memif_copy_buffer_from_rx_ring (vm, mif, ring, mq, ring_size, n_buffer_bytes, &n_free_bufs, &first_b1, &first_bi1, &bi1, &num_slots); /* enqueue buffer */ to_next[0] = first_bi0; to_next[1] = first_bi1; to_next += 2; n_left_to_next -= 2; if (mode == MEMIF_INTERFACE_MODE_IP) { next0 = memif_next_from_ip_hdr (node, first_b0); next1 = memif_next_from_ip_hdr (node, first_b1); } else if (mode == MEMIF_INTERFACE_MODE_ETHERNET) { if (PREDICT_FALSE (mif->per_interface_next_index != ~0)) next0 = next1 = mif->per_interface_next_index; else /* redirect if feature path * enabled */ vnet_feature_start_device_input_x2 (mif->sw_if_index, &next0, &next1, first_b0, first_b1); } /* trace */ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b1); if (PREDICT_FALSE (n_trace > 0)) { /* b0 */ if (PREDICT_TRUE (first_b0 != 0)) { memif_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 = mif->hw_if_index; tr->ring = qid; } if (n_trace) { /* b1 */ if (PREDICT_TRUE (first_b1 != 0)) { memif_input_trace_t *tr; vlib_trace_buffer (vm, node, next1, first_b1, /* follow_chain */ 0); vlib_set_trace_count (vm, node, --n_trace); tr = vlib_add_trace (vm, node, first_b1, sizeof (*tr)); tr->next_index = next1; tr->hw_if_index = mif->hw_if_index; tr->ring = qid; } } } /* enqueue */ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, first_bi0, first_bi1, next0, next1); /* next packet */ n_rx_packets += 2; n_rx_bytes += b0_total + b1_total; } while (num_slots && n_left_to_next) { vlib_buffer_t *first_b0 = 0; u32 bi0 = 0, first_bi0 = 0; b0_total = memif_copy_buffer_from_rx_ring (vm, mif, ring, mq, ring_size, n_buffer_bytes, &n_free_bufs, &first_b0, &first_bi0, &bi0, &num_slots); if (mode == MEMIF_INTERFACE_MODE_IP) { next0 = memif_next_from_ip_hdr (node, first_b0); } else if (mode == MEMIF_INTERFACE_MODE_ETHERNET) { if (PREDICT_FALSE (mif->per_interface_next_index != ~0)) next0 = mif->per_interface_next_index; else /* redirect if feature path * enabled */ vnet_feature_start_device_input_x1 (mif->sw_if_index, &next0, first_b0); } /* trace */ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0); if (PREDICT_FALSE (n_trace > 0)) { if (PREDICT_TRUE (first_b0 != 0)) { memif_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 = mif->hw_if_index; tr->ring = qid; } } /* enqueue buffer */ to_next[0] = first_bi0; to_next += 1; n_left_to_next--; /* enqueue */ 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 += b0_total; } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } CLIB_MEMORY_STORE_BARRIER (); ring->tail = head; vlib_increment_combined_counter (vnm->interface_main.combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, thread_index, mif->hw_if_index, n_rx_packets, n_rx_bytes); return n_rx_packets; } uword CLIB_MULTIARCH_FN (memif_input_fn) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_rx = 0; memif_main_t *nm = &memif_main; vnet_device_input_runtime_t *rt = (void *) node->runtime_data; vnet_device_and_queue_t *dq; foreach_device_and_queue (dq, rt->devices_and_queues) { memif_if_t *mif; mif = vec_elt_at_index (nm->interfaces, dq->dev_instance); if ((mif->flags & MEMIF_IF_FLAG_ADMIN_UP) && (mif->flags & MEMIF_IF_FLAG_CONNECTED)) { if (mif->flags & MEMIF_IF_FLAG_IS_SLAVE) { if (mif->mode == MEMIF_INTERFACE_MODE_IP) n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_M2S, dq->queue_id, MEMIF_INTERFACE_MODE_IP); else n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_M2S, dq->queue_id, MEMIF_INTERFACE_MODE_ETHERNET); } else { if (mif->mode == MEMIF_INTERFACE_MODE_IP) n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_S2M, dq->queue_id, MEMIF_INTERFACE_MODE_IP); else n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_S2M, dq->queue_id, MEMIF_INTERFACE_MODE_ETHERNET); } } } return n_rx; } #ifndef CLIB_MULTIARCH_VARIANT /* *INDENT-OFF* */ VLIB_REGISTER_NODE (memif_input_node) = { .function = memif_input_fn, .name = "memif-input", .sibling_of = "device-input", .format_trace = format_memif_input_trace, .type = VLIB_NODE_TYPE_INPUT, .state = VLIB_NODE_STATE_INTERRUPT, .n_errors = MEMIF_INPUT_N_ERROR, .error_strings = memif_input_error_strings, }; vlib_node_function_t __clib_weak memif_input_fn_avx512; vlib_node_function_t __clib_weak memif_input_fn_avx2; #if __x86_64__ static void __clib_constructor memif_input_multiarch_select (void) { if (memif_input_fn_avx512 && clib_cpu_supports_avx512f ()) memif_input_node.function = memif_input_fn_avx512; else if (memif_input_fn_avx2 && clib_cpu_supports_avx2 ()) memif_input_node.function = memif_input_fn_avx2; } #endif #endif /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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