Remove usued, redundant and deprecated code from lookup.h - vpp

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author	Neale Ranns <nranns@cisco.com>	2017-04-11 09:55:19 -0700
committer	Florin Coras <florin.coras@gmail.com>	2017-04-11 19:20:38 +0000
commit	107e7d4b5375295e94e01653e3cf064ea6647064 (patch)
tree	7bdda8f00b5e29a70436b70bb005dc5c907c837d /build-root/scripts/remove-rpath
parent	3a7956383420a1d2f5f28b5bd3d3b3f5dda0420d (diff)

Remove usued, redundant and deprecated code from lookup.h

Change-Id: Ic16bc10d0b2877b2afdf052615f9334f31b9519f Signed-off-by: Neale Ranns <nranns@cisco.com>

Diffstat (limited to 'build-root/scripts/remove-rpath')

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 \ _(BUFFER_ALLOC_FAIL, "buffer allocation failed") \ _(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 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 void memif_trace_buffer (vlib_main_t * vm, vlib_node_runtime_t * node, memif_if_t * mif, vlib_buffer_t * b, u32 next, u16 qid, uword * n_tracep) { VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b); if (PREDICT_TRUE (b != 0)) { memif_input_trace_t *tr; vlib_trace_buffer (vm, node, next, b, /* follow_chain */ 0); vlib_set_trace_count (vm, node, --(*n_tracep)); tr = vlib_add_trace (vm, node, b, sizeof (*tr)); tr->next_index = next; tr->hw_if_index = mif->hw_if_index; tr->ring = qid; } } static_always_inline void memif_add_copy_op (memif_per_thread_data_t * ptd, void *data, u32 len, u16 buffer_offset, u16 buffer_vec_index) { memif_copy_op_t *co; vec_add2_aligned (ptd->copy_ops, co, 1, CLIB_CACHE_LINE_BYTES); co->data = data; co->data_len = len; co->buffer_offset = buffer_offset; co->buffer_vec_index = buffer_vec_index; } static_always_inline void memif_add_to_chain (vlib_main_t * vm, vlib_buffer_t * b, u32 * buffers, u32 buffer_size) { vlib_buffer_t *seg = b; i32 bytes_left = b->current_length - buffer_size + b->current_data; if (PREDICT_TRUE (bytes_left <= 0)) return; b->current_length -= bytes_left; b->total_length_not_including_first_buffer = bytes_left; while (bytes_left) { seg->flags |= VLIB_BUFFER_NEXT_PRESENT; seg->next_buffer = buffers[0]; seg = vlib_get_buffer (vm, buffers[0]); buffers++; seg->current_data = 0; seg->current_length = clib_min (buffer_size, bytes_left); bytes_left -= seg->current_length; } } static_always_inline u32 sat_sub (u32 x, u32 y) { u32 res = x - y; res &= -(res <= x); return res; } /* branchless validation of the descriptor - uses saturated subtraction */ static_always_inline u32 memif_desc_is_invalid (memif_if_t * mif, memif_desc_t * d, u32 buffer_length) { u32 rv; u16 valid_flags = MEMIF_DESC_FLAG_NEXT; rv = d->flags & (~valid_flags); rv |= sat_sub (d->region + 1, vec_len (mif->regions)); rv |= sat_sub (d->length, buffer_length); rv |= sat_sub (d->offset + d->length, mif->regions[d->region].region_size); if (PREDICT_FALSE (rv)) { mif->flags |= MEMIF_IF_FLAG_ERROR; return 1; } return 0; } 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_main_t *mm = &memif_main; memif_ring_t *ring; memif_queue_t *mq; u16 buffer_size = VLIB_BUFFER_DATA_SIZE; uword n_trace = vlib_get_trace_count (vm, node); u16 nexts[MEMIF_RX_VECTOR_SZ], *next = nexts; u32 _to_next_bufs[MEMIF_RX_VECTOR_SZ], *to_next_bufs = _to_next_bufs, *bi; u32 n_rx_packets = 0, n_rx_bytes = 0; u32 n_left, n_left_to_next, next_index; vlib_buffer_t *b0, *b1, *b2, *b3; u32 thread_index = vm->thread_index; memif_per_thread_data_t *ptd = vec_elt_at_index (mm->per_thread_data, thread_index); vlib_buffer_t bt; u16 cur_slot, last_slot, ring_size, n_slots, mask; i16 start_offset; u16 n_buffers = 0, n_alloc; memif_copy_op_t *co; memif_packet_op_t *po; memif_region_index_t last_region = ~0; void *last_region_shm = 0; mq = vec_elt_at_index (mif->rx_queues, qid); ring = mq->ring; ring_size = 1 << mq->log2_ring_size; mask = ring_size - 1; /* asume that somebody will want to add ethernet header on the packet so start with IP header at offset 14 */ start_offset = (mode == MEMIF_INTERFACE_MODE_IP) ? 14 : 0; /* for S2M rings, we are consumers of packet buffers, and for M2S rings we are producers of empty buffers */ cur_slot = (type == MEMIF_RING_S2M) ? mq->last_head : mq->last_tail; last_slot = (type == MEMIF_RING_S2M) ? ring->head : ring->tail; if (cur_slot == last_slot) goto refill; n_slots = last_slot - cur_slot; /* construct copy and packet vector out of ring slots */ while (n_slots && n_rx_packets < MEMIF_RX_VECTOR_SZ) { u32 dst_off, src_off, n_bytes_left; u16 s0; memif_desc_t *d0; void *mb0; po = ptd->packet_ops + n_rx_packets; n_rx_packets++; po->first_buffer_vec_index = n_buffers++; po->packet_len = 0; src_off = 0; dst_off = start_offset; next_slot: CLIB_PREFETCH (&ring->desc[(cur_slot + 8) & mask], CLIB_CACHE_LINE_BYTES, LOAD); s0 = cur_slot & mask; d0 = &ring->desc[s0]; n_bytes_left = d0->length; /* slave resets buffer length, * so it can produce full size buffer for master */ if (type == MEMIF_RING_M2S) d0->length = mif->run.buffer_size; po->packet_len += n_bytes_left; if (PREDICT_FALSE (last_region != d0->region)) { last_region_shm = mif->regions[d0->region].shm; last_region = d0->region; } mb0 = last_region_shm + d0->offset; do { u32 dst_free = buffer_size - dst_off; if (dst_free == 0) { dst_off = 0; dst_free = buffer_size; n_buffers++; } u32 bytes_to_copy = clib_min (dst_free, n_bytes_left); memif_add_copy_op (ptd, mb0 + src_off, bytes_to_copy, dst_off, n_buffers - 1); n_bytes_left -= bytes_to_copy; src_off += bytes_to_copy; dst_off += bytes_to_copy; } while (PREDICT_FALSE (n_bytes_left)); cur_slot++; n_slots--; if ((d0->flags & MEMIF_DESC_FLAG_NEXT) && n_slots) { src_off = 0; goto next_slot; } } /* allocate free buffers */ vec_validate_aligned (ptd->buffers, n_buffers - 1, CLIB_CACHE_LINE_BYTES); n_alloc = vlib_buffer_alloc_from_pool (vm, ptd->buffers, n_buffers, mq->buffer_pool_index); if (PREDICT_FALSE (n_alloc != n_buffers)) { if (n_alloc) vlib_buffer_free (vm, ptd->buffers, n_alloc); vlib_error_count (vm, node->node_index, MEMIF_INPUT_ERROR_BUFFER_ALLOC_FAIL, 1); goto refill; } /* copy data */ n_left = vec_len (ptd->copy_ops); co = ptd->copy_ops; while (n_left >= 8) { CLIB_PREFETCH (co[4].data, CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (co[5].data, CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (co[6].data, CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (co[7].data, CLIB_CACHE_LINE_BYTES, LOAD); b0 = vlib_get_buffer (vm, ptd->buffers[co[0].buffer_vec_index]); b1 = vlib_get_buffer (vm, ptd->buffers[co[1].buffer_vec_index]); b2 = vlib_get_buffer (vm, ptd->buffers[co[2].buffer_vec_index]); b3 = vlib_get_buffer (vm, ptd->buffers[co[3].buffer_vec_index]); clib_memcpy_fast (b0->data + co[0].buffer_offset, co[0].data, co[0].data_len); clib_memcpy_fast (b1->data + co[1].buffer_offset, co[1].data, co[1].data_len); clib_memcpy_fast (b2->data + co[2].buffer_offset, co[2].data, co[2].data_len); clib_memcpy_fast (b3->data + co[3].buffer_offset, co[3].data, co[3].data_len); co += 4; n_left -= 4; } while (n_left) { b0 = vlib_get_buffer (vm, ptd->buffers[co[0].buffer_vec_index]); clib_memcpy_fast (b0->data + co[0].buffer_offset, co[0].data, co[0].data_len); co += 1; n_left -= 1; } /* release slots from the ring */ if (type == MEMIF_RING_S2M) { CLIB_MEMORY_STORE_BARRIER (); ring->tail = mq->last_head = cur_slot; } else { mq->last_tail = cur_slot; } /* prepare buffer template and next indices */ vnet_buffer (&ptd->buffer_template)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (&ptd->buffer_template)->feature_arc_index = 0; ptd->buffer_template.current_data = start_offset; ptd->buffer_template.current_config_index = 0; ptd->buffer_template.buffer_pool_index = mq->buffer_pool_index; ptd->buffer_template.ref_count = 1; if (mode == MEMIF_INTERFACE_MODE_ETHERNET) { next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; if (mif->per_interface_next_index != ~0) next_index = mif->per_interface_next_index; else vnet_feature_start_device_input_x1 (mif->sw_if_index, &next_index, &ptd->buffer_template); vlib_get_new_next_frame (vm, node, next_index, to_next_bufs, n_left_to_next); if (PREDICT_TRUE (next_index == VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT)) { vlib_next_frame_t *nf; vlib_frame_t *f; ethernet_input_frame_t *ef; nf = vlib_node_runtime_get_next_frame (vm, node, next_index); f = vlib_get_frame (vm, nf->frame_index); f->flags = ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX; ef = vlib_frame_scalar_args (f); ef->sw_if_index = mif->sw_if_index; ef->hw_if_index = mif->hw_if_index; } } /* process buffer metadata */ u32 n_from = n_rx_packets; po = ptd->packet_ops; bi = to_next_bufs; /* copy template into local variable - will save per packet load */ vlib_buffer_copy_template (&bt, &ptd->buffer_template); while (n_from >= 8) { b0 = vlib_get_buffer (vm, ptd->buffers[po[0].first_buffer_vec_index]); b1 = vlib_get_buffer (vm, ptd->buffers[po[1].first_buffer_vec_index]); b2 = vlib_get_buffer (vm, ptd->buffers[po[2].first_buffer_vec_index]); b3 = vlib_get_buffer (vm, ptd->buffers[po[3].first_buffer_vec_index]); vlib_prefetch_buffer_header (b0, STORE); vlib_prefetch_buffer_header (b1, STORE); vlib_prefetch_buffer_header (b2, STORE); vlib_prefetch_buffer_header (b3, STORE); /* enqueue buffer */ u32 fbvi[4]; fbvi[0] = po[0].first_buffer_vec_index; fbvi[1] = po[1].first_buffer_vec_index; fbvi[2] = po[2].first_buffer_vec_index; fbvi[3] = po[3].first_buffer_vec_index; bi[0] = ptd->buffers[fbvi[0]]; bi[1] = ptd->buffers[fbvi[1]]; bi[2] = ptd->buffers[fbvi[2]]; bi[3] = ptd->buffers[fbvi[3]]; b0 = vlib_get_buffer (vm, bi[0]); b1 = vlib_get_buffer (vm, bi[1]); b2 = vlib_get_buffer (vm, bi[2]); b3 = vlib_get_buffer (vm, bi[3]); vlib_buffer_copy_template (b0, &bt); vlib_buffer_copy_template (b1, &bt); vlib_buffer_copy_template (b2, &bt); vlib_buffer_copy_template (b3, &bt); b0->current_length = po[0].packet_len; n_rx_bytes += b0->current_length; b1->current_length = po[1].packet_len; n_rx_bytes += b1->current_length; b2->current_length = po[2].packet_len; n_rx_bytes += b2->current_length; b3->current_length = po[3].packet_len; n_rx_bytes += b3->current_length; memif_add_to_chain (vm, b0, ptd->buffers + fbvi[0] + 1, buffer_size); memif_add_to_chain (vm, b1, ptd->buffers + fbvi[1] + 1, buffer_size); memif_add_to_chain (vm, b2, ptd->buffers + fbvi[2] + 1, buffer_size); memif_add_to_chain (vm, b3, ptd->buffers + fbvi[3] + 1, buffer_size); if (mode == MEMIF_INTERFACE_MODE_IP) { next[0] = memif_next_from_ip_hdr (node, b0); next[1] = memif_next_from_ip_hdr (node, b1); next[2] = memif_next_from_ip_hdr (node, b2); next[3] = memif_next_from_ip_hdr (node, b3); } /* next */ n_from -= 4; po += 4; bi += 4; next += 4; } while (n_from) { u32 fbvi[4]; /* enqueue buffer */ fbvi[0] = po[0].first_buffer_vec_index; bi[0] = ptd->buffers[fbvi[0]]; b0 = vlib_get_buffer (vm, bi[0]); vlib_buffer_copy_template (b0, &bt); b0->current_length = po->packet_len; n_rx_bytes += b0->current_length; memif_add_to_chain (vm, b0, ptd->buffers + fbvi[0] + 1, buffer_size); if (mode == MEMIF_INTERFACE_MODE_IP) { next[0] = memif_next_from_ip_hdr (node, b0); } /* next */ n_from -= 1; po += 1; bi += 1; next += 1; } /* packet trace if enabled */ if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node)))) { u32 n_left = n_rx_packets; bi = to_next_bufs; next = nexts; u32 ni = next_index; while (n_trace && n_left) { vlib_buffer_t *b; memif_input_trace_t *tr; if (mode != MEMIF_INTERFACE_MODE_ETHERNET) ni = next[0]; b = vlib_get_buffer (vm, bi[0]); vlib_trace_buffer (vm, node, ni, b, /* follow_chain */ 0); tr = vlib_add_trace (vm, node, b, sizeof (*tr)); tr->next_index = ni; tr->hw_if_index = mif->hw_if_index; tr->ring = qid; /* next */ n_trace--; n_left--; bi++; next++; } vlib_set_trace_count (vm, node, n_trace); } if (mode == MEMIF_INTERFACE_MODE_ETHERNET) { n_left_to_next -= n_rx_packets; vlib_put_next_frame (vm, node, next_index, n_left_to_next); } else vlib_buffer_enqueue_to_next (vm, node, to_next_bufs, nexts, n_rx_packets); 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); /* refill ring with empty buffers */ refill: vec_reset_length (ptd->buffers); vec_reset_length (ptd->copy_ops); if (type == MEMIF_RING_M2S) { u16 head = ring->head; n_slots = ring_size - head + mq->last_tail; while (n_slots--) { u16 s = head++ & mask; memif_desc_t *d = &ring->desc[s]; d->length = mif->run.buffer_size; } CLIB_MEMORY_STORE_BARRIER (); ring->head = head; } return n_rx_packets; } static_always_inline uword memif_device_input_zc_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame, memif_if_t * mif, u16 qid, memif_interface_mode_t mode) { vnet_main_t *vnm = vnet_get_main (); memif_main_t *mm = &memif_main; memif_ring_t *ring; memif_queue_t *mq; u32 next_index; uword n_trace = vlib_get_trace_count (vm, node); u32 n_rx_packets = 0, n_rx_bytes = 0; u32 *to_next = 0, *buffers; u32 bi0, bi1, bi2, bi3; u16 s0, s1, s2, s3; memif_desc_t *d0, *d1, *d2, *d3; vlib_buffer_t *b0, *b1, *b2, *b3; u32 thread_index = vm->thread_index; memif_per_thread_data_t *ptd = vec_elt_at_index (mm->per_thread_data, thread_index); u16 cur_slot, last_slot, ring_size, n_slots, mask, head; i16 start_offset; u32 buffer_length; u16 n_alloc, n_from; mq = vec_elt_at_index (mif->rx_queues, qid); ring = mq->ring; ring_size = 1 << mq->log2_ring_size; mask = ring_size - 1; next_index = (mode == MEMIF_INTERFACE_MODE_IP) ? VNET_DEVICE_INPUT_NEXT_IP6_INPUT : VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; /* asume that somebody will want to add ethernet header on the packet so start with IP header at offset 14 */ start_offset = (mode == MEMIF_INTERFACE_MODE_IP) ? 14 : 0; buffer_length = VLIB_BUFFER_DATA_SIZE - start_offset; cur_slot = mq->last_tail; last_slot = ring->tail; if (cur_slot == last_slot) goto refill; n_slots = last_slot - cur_slot; /* process ring slots */ vec_validate_aligned (ptd->buffers, MEMIF_RX_VECTOR_SZ, CLIB_CACHE_LINE_BYTES); while (n_slots && n_rx_packets < MEMIF_RX_VECTOR_SZ) { vlib_buffer_t *hb; s0 = cur_slot & mask; bi0 = mq->buffers[s0]; ptd->buffers[n_rx_packets++] = bi0; CLIB_PREFETCH (&ring->desc[(cur_slot + 8) & mask], CLIB_CACHE_LINE_BYTES, LOAD); d0 = &ring->desc[s0]; hb = b0 = vlib_get_buffer (vm, bi0); b0->current_data = start_offset; b0->current_length = start_offset + d0->length; n_rx_bytes += d0->length; if (0 && memif_desc_is_invalid (mif, d0, buffer_length)) return 0; cur_slot++; n_slots--; if (PREDICT_FALSE ((d0->flags & MEMIF_DESC_FLAG_NEXT) && n_slots)) { hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; next_slot: s0 = cur_slot & mask; d0 = &ring->desc[s0]; bi0 = mq->buffers[s0]; /* previous buffer */ b0->next_buffer = bi0; b0->flags |= VLIB_BUFFER_NEXT_PRESENT; /* current buffer */ b0 = vlib_get_buffer (vm, bi0); b0->current_data = start_offset; b0->current_length = start_offset + d0->length; hb->total_length_not_including_first_buffer += d0->length; n_rx_bytes += d0->length; cur_slot++; n_slots--; if ((d0->flags & MEMIF_DESC_FLAG_NEXT) && n_slots) goto next_slot; } } /* release slots from the ring */ mq->last_tail = cur_slot; n_from = n_rx_packets; buffers = ptd->buffers; while (n_from) { u32 n_left_to_next; u32 next0, next1, next2, next3; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_from >= 8 && n_left_to_next >= 4) { b0 = vlib_get_buffer (vm, buffers[4]); b1 = vlib_get_buffer (vm, buffers[5]); b2 = vlib_get_buffer (vm, buffers[6]); b3 = vlib_get_buffer (vm, buffers[7]); vlib_prefetch_buffer_header (b0, STORE); vlib_prefetch_buffer_header (b1, STORE); vlib_prefetch_buffer_header (b2, STORE); vlib_prefetch_buffer_header (b3, STORE); /* enqueue buffer */ to_next[0] = bi0 = buffers[0]; to_next[1] = bi1 = buffers[1]; to_next[2] = bi2 = buffers[2]; to_next[3] = bi3 = buffers[3]; to_next += 4; n_left_to_next -= 4; buffers += 4; b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); b2 = vlib_get_buffer (vm, bi2); b3 = vlib_get_buffer (vm, bi3); vnet_buffer (b0)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0; vnet_buffer (b1)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (b1)->sw_if_index[VLIB_TX] = ~0; vnet_buffer (b2)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (b2)->sw_if_index[VLIB_TX] = ~0; vnet_buffer (b3)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (b3)->sw_if_index[VLIB_TX] = ~0; if (mode == MEMIF_INTERFACE_MODE_IP) { next0 = memif_next_from_ip_hdr (node, b0); next1 = memif_next_from_ip_hdr (node, b1); next2 = memif_next_from_ip_hdr (node, b2); next3 = memif_next_from_ip_hdr (node, b3); } else if (mode == MEMIF_INTERFACE_MODE_ETHERNET) { if (PREDICT_FALSE (mif->per_interface_next_index != ~0)) { next0 = mif->per_interface_next_index; next1 = mif->per_interface_next_index; next2 = mif->per_interface_next_index; next3 = mif->per_interface_next_index; } else { next0 = next1 = next2 = next3 = next_index; /* redirect if feature path enabled */ vnet_feature_start_device_input_x1 (mif->sw_if_index, &next0, b0); vnet_feature_start_device_input_x1 (mif->sw_if_index, &next1, b1); vnet_feature_start_device_input_x1 (mif->sw_if_index, &next2, b2); vnet_feature_start_device_input_x1 (mif->sw_if_index, &next3, b3); } } /* trace */ if (PREDICT_FALSE (n_trace > 0)) { memif_trace_buffer (vm, node, mif, b0, next0, qid, &n_trace); if (PREDICT_FALSE (n_trace > 0)) memif_trace_buffer (vm, node, mif, b1, next1, qid, &n_trace); if (PREDICT_FALSE (n_trace > 0)) memif_trace_buffer (vm, node, mif, b2, next2, qid, &n_trace); if (PREDICT_FALSE (n_trace > 0)) memif_trace_buffer (vm, node, mif, b3, next3, qid, &n_trace); } /* enqueue */ vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, n_left_to_next, bi0, bi1, bi2, bi3, next0, next1, next2, next3); /* next */ n_from -= 4; } while (n_from && n_left_to_next) { /* enqueue buffer */ to_next[0] = bi0 = buffers[0]; to_next += 1; n_left_to_next--; buffers += 1; b0 = vlib_get_buffer (vm, bi0); vnet_buffer (b0)->sw_if_index[VLIB_RX] = mif->sw_if_index; vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0; if (mode == MEMIF_INTERFACE_MODE_IP) { next0 = memif_next_from_ip_hdr (node, b0); } else if (mode == MEMIF_INTERFACE_MODE_ETHERNET) { if (PREDICT_FALSE (mif->per_interface_next_index != ~0)) next0 = mif->per_interface_next_index; else { next0 = next_index; /* redirect if feature path enabled */ vnet_feature_start_device_input_x1 (mif->sw_if_index, &next0, b0); } } /* trace */ if (PREDICT_FALSE (n_trace > 0)) memif_trace_buffer (vm, node, mif, b0, next0, qid, &n_trace); /* enqueue */ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, bi0, next0); /* next */ n_from--; } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } 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); /* refill ring with empty buffers */ refill: vec_reset_length (ptd->buffers); head = ring->head; n_slots = ring_size - head + mq->last_tail; if (n_slots < 32) goto done; memif_desc_t *dt = &ptd->desc_template; clib_memset (dt, 0, sizeof (memif_desc_t)); dt->length = buffer_length; n_alloc = vlib_buffer_alloc_to_ring_from_pool (vm, mq->buffers, head & mask, ring_size, n_slots, mq->buffer_pool_index); if (PREDICT_FALSE (n_alloc != n_slots)) { vlib_error_count (vm, node->node_index, MEMIF_INPUT_ERROR_BUFFER_ALLOC_FAIL, 1); } while (n_alloc >= 32) { bi0 = mq->buffers[(head + 4) & mask]; vlib_prefetch_buffer_with_index (vm, bi0, LOAD); bi1 = mq->buffers[(head + 5) & mask]; vlib_prefetch_buffer_with_index (vm, bi1, LOAD); bi2 = mq->buffers[(head + 6) & mask]; vlib_prefetch_buffer_with_index (vm, bi2, LOAD); bi3 = mq->buffers[(head + 7) & mask]; vlib_prefetch_buffer_with_index (vm, bi3, LOAD); s0 = head++ & mask; s1 = head++ & mask; s2 = head++ & mask; s3 = head++ & mask; d0 = &ring->desc[s0]; d1 = &ring->desc[s1]; d2 = &ring->desc[s2]; d3 = &ring->desc[s3]; clib_memcpy_fast (d0, dt, sizeof (memif_desc_t)); clib_memcpy_fast (d1, dt, sizeof (memif_desc_t)); clib_memcpy_fast (d2, dt, sizeof (memif_desc_t)); clib_memcpy_fast (d3, dt, sizeof (memif_desc_t)); b0 = vlib_get_buffer (vm, mq->buffers[s0]); b1 = vlib_get_buffer (vm, mq->buffers[s1]); b2 = vlib_get_buffer (vm, mq->buffers[s2]); b3 = vlib_get_buffer (vm, mq->buffers[s3]); d0->region = b0->buffer_pool_index + 1; d1->region = b1->buffer_pool_index + 1; d2->region = b2->buffer_pool_index + 1; d3->region = b3->buffer_pool_index + 1; d0->offset = (void *) b0->data - mif->regions[d0->region].shm + start_offset; d1->offset = (void *) b1->data - mif->regions[d1->region].shm + start_offset; d2->offset = (void *) b2->data - mif->regions[d2->region].shm + start_offset; d3->offset = (void *) b3->data - mif->regions[d3->region].shm + start_offset; n_alloc -= 4; } while (n_alloc) { s0 = head++ & mask; d0 = &ring->desc[s0]; clib_memcpy_fast (d0, dt, sizeof (memif_desc_t)); b0 = vlib_get_buffer (vm, mq->buffers[s0]); d0->region = b0->buffer_pool_index + 1; d0->offset = (void *) b0->data - mif->regions[d0->region].shm + start_offset; n_alloc -= 1; } CLIB_MEMORY_STORE_BARRIER (); ring->head = head; done: return n_rx_packets; } VLIB_NODE_FN (memif_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_rx = 0; memif_main_t *mm = &memif_main; vnet_device_input_runtime_t *rt = (void *) node->runtime_data; vnet_device_and_queue_t *dq; memif_interface_mode_t mode_ip = MEMIF_INTERFACE_MODE_IP; memif_interface_mode_t mode_eth = MEMIF_INTERFACE_MODE_ETHERNET; foreach_device_and_queue (dq, rt->devices_and_queues) { memif_if_t *mif; mif = vec_elt_at_index (mm->interfaces, dq->dev_instance); if ((mif->flags & MEMIF_IF_FLAG_ADMIN_UP) && (mif->flags & MEMIF_IF_FLAG_CONNECTED)) { if (mif->flags & MEMIF_IF_FLAG_ZERO_COPY) { if (mif->mode == MEMIF_INTERFACE_MODE_IP) n_rx += memif_device_input_zc_inline (vm, node, frame, mif, dq->queue_id, mode_ip); else n_rx += memif_device_input_zc_inline (vm, node, frame, mif, dq->queue_id, mode_eth); } else 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, mode_ip); else n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_M2S, dq->queue_id, mode_eth); } else { if (mif->mode == MEMIF_INTERFACE_MODE_IP) n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_S2M, dq->queue_id, mode_ip); else n_rx += memif_device_input_inline (vm, node, frame, mif, MEMIF_RING_S2M, dq->queue_id, mode_eth); } } } return n_rx; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (memif_input_node) = { .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, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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