X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fmemif%2Fnode.c;h=5abd20abc35cf668f1ef791171775bd1e9e65856;hb=fc025725b895057d16687ebcab22d1bbb0837cba;hp=83f1277637e9ec5ee9e919cfde612ce4faaa278d;hpb=15e598c76e815786dea8e964db7b6de35a2fc4ca;p=vpp.git diff --git a/src/plugins/memif/node.c b/src/plugins/memif/node.c index 83f1277637e..5abd20abc35 100644 --- a/src/plugins/memif/node.c +++ b/src/plugins/memif/node.c @@ -24,25 +24,29 @@ #include #include #include -#include +#include #include #include #include -#define foreach_memif_input_error \ - _(NOT_IP, "not ip packet") +#define MEMIF_IP_OFFSET 14 + +#define foreach_memif_input_error \ + _ (BUFFER_ALLOC_FAIL, buffer_alloc, ERROR, "buffer allocation failed") \ + _ (BAD_DESC, bad_desc, ERROR, "bad descriptor") \ + _ (NOT_IP, not_ip, INFO, "not ip packet") typedef enum { -#define _(f,s) MEMIF_INPUT_ERROR_##f, +#define _(f, n, s, d) 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, +static vlib_error_desc_t memif_input_error_counters[] = { +#define _(f, n, s, d) { #n, d, VL_COUNTER_SEVERITY_##s }, foreach_memif_input_error #undef _ }; @@ -69,535 +73,1025 @@ format_memif_input_trace (u8 * s, va_list * args) 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_prefetch (vlib_main_t * vm, u32 bi) +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_t *b = vlib_get_buffer (vm, bi); - vlib_prefetch_buffer_header (b, STORE); - CLIB_PREFETCH (b->data, CLIB_CACHE_LINE_BYTES, STORE); + if (PREDICT_TRUE + (b != 0 && vlib_trace_buffer (vm, node, next, b, /* follow_chain */ 0))) + { + memif_input_trace_t *tr; + 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_buffer_add_to_chain (vlib_main_t * vm, u32 bi, u32 first_bi, - u32 prev_bi) +memif_add_copy_op (memif_per_thread_data_t * ptd, void *data, u32 len, + u16 buffer_offset, u16 buffer_vec_index) { - 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); + 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; +} - /* update first buffer */ - first_b->total_length_not_including_first_buffer += b->current_length; +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; - /* update previous buffer */ - prev_b->next_buffer = bi; - prev_b->flags |= VLIB_BUFFER_NEXT_PRESENT; + if (PREDICT_TRUE (bytes_left <= 0)) + return; - /* update current buffer */ - b->next_buffer = 0; + 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; + } } -/** - * @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) +static_always_inline u16 +memif_parse_desc (memif_per_thread_data_t *ptd, memif_if_t *mif, + memif_queue_t *mq, u16 next, u16 n_avail) { - 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) + memif_ring_t *ring = mq->ring; + memif_desc_t *descs = ring->desc; + void **desc_data = ptd->desc_data; + u16 *desc_len = ptd->desc_len; + memif_desc_status_t *desc_status = ptd->desc_status; + u16 n_desc = 0, n_pkts = 0; + u32 i = 0; + u16 mask = pow2_mask (mq->log2_ring_size); + memif_desc_t *d = 0; + u32 slot = next; + + while (i < n_avail) { - data_len = ring->desc[mq->last_head & mask].length; - while (data_len && (*n_free_bufs)) + u8 flags; + d = descs + (slot++ & mask); + desc_data[i] = (void *) ((u64) d->region << 32 | d->offset); + desc_len[i] = d->length; + desc_status[i].as_u8 = flags = d->flags; + i++; + if (PREDICT_FALSE ((flags & MEMIF_DESC_FLAG_NEXT)) == 0) { - /* 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); - /* Clear the error first to ensure following node forget setting it */ - /* It will cause null-node error counter increasement instead of potential crash */ - b->error = 0x0; - _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; - } + n_desc = i; + if (++n_pkts == MEMIF_RX_VECTOR_SZ) + goto frame_full; + } + } +frame_full: - 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]); - } + /* done */ + ptd->n_packets = n_pkts; + return n_desc; +} - /* 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); +static_always_inline void +memif_desc_status_set_err (memif_desc_status_t *p, + memif_desc_status_err_code_t e) +{ + memif_desc_status_t s = { .err = 1, .err_code = e }; + p->as_u8 |= s.as_u8; +} + +static_always_inline void +memif_validate_desc_data (memif_per_thread_data_t *ptd, memif_if_t *mif, + u16 n_desc, int is_ethernet) +{ + void **desc_data = ptd->desc_data; + u16 *desc_len = ptd->desc_len; + memif_desc_status_t *desc_status = ptd->desc_status; + u16 n_regions = vec_len (mif->regions); + u32 n_rx_bytes = 0; + u16 max_len = 0; + u8 xor_status = 0; - offset += bytes_to_copy; - total_bytes += bytes_to_copy; - data_len -= bytes_to_copy; + for (u32 i = 0; i < n_desc; i++) + { + u16 region = ((u64) desc_data[i]) >> 32; + u32 offset = (u64) desc_data[i]; + u16 len = desc_len[i]; + memif_region_t *r = mif->regions + region; + + if (region >= n_regions) + memif_desc_status_set_err (desc_status + i, + MEMIF_DESC_STATUS_ERR_BAD_REGION); + else if (offset + len > r->region_size) + memif_desc_status_set_err (desc_status + i, + MEMIF_DESC_STATUS_ERR_REGION_OVERRUN); + else if (is_ethernet && len > ETHERNET_MAX_PACKET_BYTES) + memif_desc_status_set_err (desc_status + i, + MEMIF_DESC_STATUS_ERR_DATA_TOO_BIG); + else if (len == 0) + memif_desc_status_set_err (desc_status + i, + MEMIF_DESC_STATUS_ERR_ZERO_LENGTH); + else + { + desc_data[i] = r->shm + offset; + if (len > max_len) + max_len = len; + n_rx_bytes += len; } - 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; + xor_status |= desc_status[i].as_u8; } - return (total_bytes); + ptd->max_desc_len = max_len; + ptd->xor_status = xor_status; + ptd->n_rx_bytes = n_rx_bytes; } - static_always_inline u32 -memif_next_from_ip_hdr (vlib_node_runtime_t * node, vlib_buffer_t * b) +memif_process_desc (vlib_main_t *vm, vlib_node_runtime_t *node, + memif_per_thread_data_t *ptd, memif_if_t *mif) { - u8 *ptr = vlib_buffer_get_current (b); - u8 v = *ptr & 0xf0; + u16 buffer_size = vlib_buffer_get_default_data_size (vm); + int is_ip = mif->mode == MEMIF_INTERFACE_MODE_IP; + i16 start_offset = (is_ip) ? MEMIF_IP_OFFSET : 0; + memif_packet_op_t *po = ptd->packet_ops; + void **desc_data = ptd->desc_data; + u16 *desc_len = ptd->desc_len; + memif_desc_status_t *desc_status = ptd->desc_status; + u32 n_buffers = 0; + u32 n_left = ptd->n_packets; + u32 packet_len; + int i = -1; + + /* construct copy and packet vector out of ring slots */ + while (n_left) + { + u32 dst_off, src_off, n_bytes_left; + void *mb0; + po->first_buffer_vec_index = n_buffers++; - 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; + packet_len = 0; + src_off = 0; + dst_off = start_offset; - b->error = node->errors[MEMIF_INPUT_ERROR_NOT_IP]; - return VNET_DEVICE_INPUT_NEXT_DROP; + next_slot: + i++; /* next descriptor */ + n_bytes_left = desc_len[i]; + + packet_len += n_bytes_left; + mb0 = desc_data[i]; + + if (PREDICT_FALSE (desc_status[i].err)) + vlib_error_count (vm, node->node_index, MEMIF_INPUT_ERROR_BAD_DESC, 1); + else + 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)); + + if (desc_status[i].next) + { + src_off = 0; + goto next_slot; + } + + /* update packet op */ + po->packet_len = packet_len; + po++; + + /* next packet */ + n_left--; + } + return n_buffers; +} +static_always_inline void +memif_fill_buffer_mdata_simple (vlib_node_runtime_t *node, + memif_per_thread_data_t *ptd, + vlib_buffer_t **b, u16 *next, int is_ip) +{ + vlib_buffer_t bt; + u16 *dl = ptd->desc_len; + /* process buffer metadata */ + + u32 n_left = ptd->n_packets; + + /* copy template into local variable - will save per packet load */ + vlib_buffer_copy_template (&bt, &ptd->buffer_template); + + while (n_left >= 8) + { + vlib_prefetch_buffer_header (b[4], STORE); + vlib_prefetch_buffer_header (b[5], STORE); + vlib_prefetch_buffer_header (b[6], STORE); + vlib_prefetch_buffer_header (b[7], STORE); + + vlib_buffer_copy_template (b[0], &bt); + vlib_buffer_copy_template (b[1], &bt); + vlib_buffer_copy_template (b[2], &bt); + vlib_buffer_copy_template (b[3], &bt); + + b[0]->current_length = dl[0]; + b[1]->current_length = dl[1]; + b[2]->current_length = dl[2]; + b[3]->current_length = dl[3]; + + if (is_ip) + { + next[0] = memif_next_from_ip_hdr (node, b[0]); + next[1] = memif_next_from_ip_hdr (node, b[1]); + next[2] = memif_next_from_ip_hdr (node, b[2]); + next[3] = memif_next_from_ip_hdr (node, b[3]); + } + + /* next */ + n_left -= 4; + b += 4; + dl += 4; + next += 4; + } + + while (n_left) + { + /* enqueue buffer */ + vlib_buffer_copy_template (b[0], &bt); + b[0]->current_length = dl[0]; + if (is_ip) + next[0] = memif_next_from_ip_hdr (node, b[0]); + + /* next */ + n_left -= 1; + b += 1; + dl += 1; + next += 1; + } +} + +static_always_inline void +memif_fill_buffer_mdata (vlib_main_t *vm, vlib_node_runtime_t *node, + memif_per_thread_data_t *ptd, memif_if_t *mif, + u32 *bi, u16 *next, int is_ip) +{ + u16 buffer_size = vlib_buffer_get_default_data_size (vm); + vlib_buffer_t *b0, *b1, *b2, *b3, bt; + memif_packet_op_t *po; + /* process buffer metadata */ + + u32 n_from = ptd->n_packets; + po = ptd->packet_ops; + + /* 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[4].first_buffer_vec_index]); + b1 = vlib_get_buffer (vm, ptd->buffers[po[5].first_buffer_vec_index]); + b2 = vlib_get_buffer (vm, ptd->buffers[po[6].first_buffer_vec_index]); + b3 = vlib_get_buffer (vm, ptd->buffers[po[7].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; + b1->current_length = po[1].packet_len; + b2->current_length = po[2].packet_len; + b3->current_length = po[3].packet_len; + + 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 (is_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[1]; + /* 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; + + memif_add_to_chain (vm, b0, ptd->buffers + fbvi[0] + 1, buffer_size); + + if (is_ip) + next[0] = memif_next_from_ip_hdr (node, b0); + + /* next */ + n_from -= 1; + po += 1; + bi += 1; + next += 1; + } } 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_device_input_inline (vlib_main_t *vm, vlib_node_runtime_t *node, + 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 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); + u16 buffer_size = vlib_buffer_get_default_data_size (vm); + uword n_trace; + 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_left_to_next; + u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; + vlib_buffer_t *buffer_ptrs[MEMIF_RX_VECTOR_SZ]; + 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, ring_size, n_slots, mask; + u16 n_buffers, n_alloc, n_desc; + i16 start_offset; + memif_copy_op_t *co; + int is_slave = (mif->flags & MEMIF_IF_FLAG_IS_SLAVE) != 0; + int is_simple = 1; + int i; 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) + start_offset = (mode == MEMIF_INTERFACE_MODE_IP) ? MEMIF_IP_OFFSET : 0; + + if (is_slave) { - next_index = VNET_DEVICE_INPUT_NEXT_IP6_INPUT; + cur_slot = mq->last_tail; + n_slots = __atomic_load_n (&ring->tail, __ATOMIC_ACQUIRE) - cur_slot; } else { - next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; + cur_slot = mq->last_head; + n_slots = __atomic_load_n (&ring->head, __ATOMIC_ACQUIRE) - cur_slot; } - n_free_bufs = vec_len (nm->rx_buffers[thread_index]); - if (PREDICT_FALSE (n_free_bufs < ring_size)) + if (n_slots == 0) + goto refill; + + n_desc = memif_parse_desc (ptd, mif, mq, cur_slot, n_slots); + + if (n_desc != ptd->n_packets) + is_simple = 0; + + cur_slot += n_desc; + + if (mif->mode == MEMIF_INTERFACE_MODE_ETHERNET) + memif_validate_desc_data (ptd, mif, n_desc, /* is_ethernet */ 1); + else + memif_validate_desc_data (ptd, mif, n_desc, /* is_ethernet */ 0); + + if (ptd->max_desc_len > buffer_size - start_offset) + is_simple = 0; + + if (ptd->xor_status != 0) + is_simple = 0; + + if (is_simple) + n_buffers = ptd->n_packets; + else + n_buffers = memif_process_desc (vm, node, ptd, mif); + + /* 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)) { - 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; + 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; } - head = ring->head; - mq->last_head = ring->tail; - if (head == mq->last_head) - return 0; + /* copy data */ + if (is_simple) + { + int n_pkts = ptd->n_packets; + void **desc_data = ptd->desc_data; + u16 *desc_len = ptd->desc_len; - num_slots = head - mq->last_head; + vlib_get_buffers (vm, ptd->buffers, buffer_ptrs, n_buffers); - while (num_slots) + for (i = 0; i + 8 < n_pkts; i++) + { + clib_prefetch_load (desc_data[i + 8]); + clib_prefetch_store (buffer_ptrs[i + 8]->data); + clib_memcpy_fast (buffer_ptrs[i]->data + start_offset, desc_data[i], + desc_len[i]); + } + for (; i < n_pkts; i++) + clib_memcpy_fast (buffer_ptrs[i]->data + start_offset, desc_data[i], + desc_len[i]); + } + else { - 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); + vlib_buffer_t *b; + u32 n_pkts = vec_len (ptd->copy_ops); + co = ptd->copy_ops; - while (num_slots > 11 && n_left_to_next > 2) + for (i = 0; i + 8 < n_pkts; i++) { - 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); - - if (PREDICT_FALSE (!first_bi0 || !first_bi1)) - { - goto _invalid_pkt01; - } - /* enqueue buffer */ - to_next[0] = first_bi0; - to_next[1] = first_bi1; - to_next += 2; - n_left_to_next -= 2; + clib_prefetch_load (co[i + 8].data); + b = vlib_get_buffer (vm, ptd->buffers[co[i].buffer_vec_index]); + clib_memcpy_fast (b->data + co[i].buffer_offset, co[i].data, + co[i].data_len); + } + for (; i < n_pkts; i++) + { + b = vlib_get_buffer (vm, ptd->buffers[co[i].buffer_vec_index]); + clib_memcpy_fast (b->data + co[i].buffer_offset, co[i].data, + co[i].data_len); + } + } + /* release slots from the ring */ + if (type == MEMIF_RING_S2M) + { + __atomic_store_n (&ring->tail, cur_slot, __ATOMIC_RELEASE); + mq->last_head = cur_slot; + } + else + { + mq->last_tail = cur_slot; + } - 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); - } + /* 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; - /* trace */ - VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b0); - VLIB_BUFFER_TRACE_TRAJECTORY_INIT (first_b1); + 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); + 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; + vlib_frame_no_append (f); + } + } - if (PREDICT_FALSE (n_trace > 0)) + if (is_simple) + { + vlib_buffer_copy_indices (to_next_bufs, ptd->buffers, ptd->n_packets); + if (mode == MEMIF_INTERFACE_MODE_IP) + memif_fill_buffer_mdata_simple (node, ptd, buffer_ptrs, nexts, 1); + else + memif_fill_buffer_mdata_simple (node, ptd, buffer_ptrs, nexts, 0); + } + else + { + if (mode == MEMIF_INTERFACE_MODE_IP) + memif_fill_buffer_mdata (vm, node, ptd, mif, to_next_bufs, nexts, 1); + else + memif_fill_buffer_mdata (vm, node, ptd, mif, to_next_bufs, nexts, 0); + } + + /* packet trace if enabled */ + if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node)))) + { + u32 n_left = ptd->n_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]); + if (PREDICT_TRUE + (vlib_trace_buffer (vm, node, ni, b, /* follow_chain */ 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; - } - } + tr = vlib_add_trace (vm, node, b, sizeof (*tr)); + tr->next_index = ni; + tr->hw_if_index = mif->hw_if_index; + tr->ring = qid; + n_trace--; } - /* enqueue */ - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, - n_left_to_next, first_bi0, - first_bi1, next0, next1); + /* next */ + n_left--; + bi++; + next++; + } + vlib_set_trace_count (vm, node, n_trace); + } - /* next packet */ - n_rx_packets += 2; - n_rx_bytes += b0_total + b1_total; + if (mode == MEMIF_INTERFACE_MODE_ETHERNET) + { + n_left_to_next -= ptd->n_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, + ptd->n_packets); - continue; - _invalid_pkt01: - if (!first_bi0 && !first_bi1) - { - continue; - } - if (first_bi1) - { - first_bi0 = first_bi1; - first_b0 = first_b1; - bi0 = bi1; - b0_total = b1_total; - } + vlib_increment_combined_counter ( + vnm->interface_main.combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX, + thread_index, mif->sw_if_index, ptd->n_packets, ptd->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; + } + + __atomic_store_n (&ring->head, head, __ATOMIC_RELEASE); + } + + return ptd->n_packets; +} + +static_always_inline uword +memif_device_input_zc_inline (vlib_main_t *vm, vlib_node_runtime_t *node, + 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 slot, s0; + memif_desc_t *d0; + 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; + u64 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_get_default_data_size (vm) - start_offset; + + cur_slot = mq->last_tail; + last_slot = __atomic_load_n (&ring->tail, __ATOMIC_ACQUIRE); + 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_load (&ring->desc[(cur_slot + 8) & mask]); + d0 = &ring->desc[s0]; + hb = b0 = vlib_get_buffer (vm, bi0); + b0->current_data = start_offset; + b0->current_length = d0->length; + n_rx_bytes += d0->length; + + cur_slot++; + n_slots--; + if (PREDICT_FALSE ((d0->flags & MEMIF_DESC_FLAG_NEXT) && n_slots)) + { + hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; + hb->total_length_not_including_first_buffer = 0; + 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 = 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, first_b0); + 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; + { + 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 - /* redirect if feature path - * enabled */ - vnet_feature_start_device_input_x1 (mif->sw_if_index, &next0, - first_b0); + { + 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 */ - 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; - } + 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 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); + vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, + n_left_to_next, bi0, bi1, bi2, bi3, + next0, next1, next2, next3); - /* next packet */ - n_rx_packets++; - n_rx_bytes += b0_total; + /* next */ + n_from -= 4; } - while (num_slots && n_left_to_next) + while (n_from && 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 (PREDICT_FALSE (!first_bi0)) - { - goto _invalid_pkt0; - } + /* 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, first_b0); + 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 - /* 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; + next0 = next_index; + /* redirect if feature path enabled */ + vnet_feature_start_device_input_x1 (mif->sw_if_index, + &next0, b0); } } - /* enqueue buffer */ - to_next[0] = first_bi0; - to_next += 1; - n_left_to_next--; + /* 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, first_bi0, next0); - - /* next packet */ - n_rx_packets++; - n_rx_bytes += b0_total; - continue; - _invalid_pkt0: - ; - } - if (PREDICT_TRUE (n_rx_packets != 0)) - { - vlib_put_next_frame (vm, node, next_index, n_left_to_next); + n_left_to_next, bi0, next0); + + /* next */ + n_from--; } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); } - CLIB_MEMORY_STORE_BARRIER (); - ring->tail = mq->last_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, + mif->sw_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; + slot = head & mask; + + n_slots &= ~7; + + if (n_slots < 32) + goto done; + + memif_desc_t desc_template, *dt = &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, slot, ring_size, n_slots, mq->buffer_pool_index); + dt->region = mq->buffer_pool_index + 1; + offset = (u64) mif->regions[dt->region].shm - start_offset; + + if (PREDICT_FALSE (n_alloc != n_slots)) + vlib_error_count (vm, node->node_index, + MEMIF_INPUT_ERROR_BUFFER_ALLOC_FAIL, 1); + + head += n_alloc; + + while (n_alloc) + { + memif_desc_t *d = ring->desc + slot; + u32 *bi = mq->buffers + slot; + + if (PREDICT_FALSE (((slot + 7 > mask) || (n_alloc < 8)))) + goto one_by_one; + + clib_memcpy_fast (d + 0, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 1, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 2, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 3, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 4, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 5, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 6, dt, sizeof (memif_desc_t)); + clib_memcpy_fast (d + 7, dt, sizeof (memif_desc_t)); + + d[0].offset = (u64) vlib_get_buffer (vm, bi[0])->data - offset; + d[1].offset = (u64) vlib_get_buffer (vm, bi[1])->data - offset; + d[2].offset = (u64) vlib_get_buffer (vm, bi[2])->data - offset; + d[3].offset = (u64) vlib_get_buffer (vm, bi[3])->data - offset; + d[4].offset = (u64) vlib_get_buffer (vm, bi[4])->data - offset; + d[5].offset = (u64) vlib_get_buffer (vm, bi[5])->data - offset; + d[6].offset = (u64) vlib_get_buffer (vm, bi[6])->data - offset; + d[7].offset = (u64) vlib_get_buffer (vm, bi[7])->data - offset; + + slot = (slot + 8) & mask; + n_alloc -= 8; + continue; + + one_by_one: + clib_memcpy_fast (d, dt, sizeof (memif_desc_t)); + d[0].offset = (u64) vlib_get_buffer (vm, bi[0])->data - offset; + + slot = (slot + 1) & mask; + n_alloc -= 1; + } + + __atomic_store_n (&ring->head, head, __ATOMIC_RELEASE); + +done: return n_rx_packets; } -uword -CLIB_MULTIARCH_FN (memif_input_fn) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) + +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 *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); - } - } - } + memif_main_t *mm = &memif_main; + memif_interface_mode_t mode_ip = MEMIF_INTERFACE_MODE_IP; + memif_interface_mode_t mode_eth = MEMIF_INTERFACE_MODE_ETHERNET; + + vnet_hw_if_rxq_poll_vector_t *pv; + pv = vnet_hw_if_get_rxq_poll_vector (vm, node); + for (int i = 0; i < vec_len (pv); i++) + { + memif_if_t *mif; + u32 qid; + mif = vec_elt_at_index (mm->interfaces, pv[i].dev_instance); + qid = pv[i].queue_id; + 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, mif, qid, mode_ip); + else + n_rx += + memif_device_input_zc_inline (vm, node, mif, qid, 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, mif, MEMIF_RING_M2S, qid, mode_ip); + else + n_rx += memif_device_input_inline ( + vm, node, mif, MEMIF_RING_M2S, qid, mode_eth); + } + else + { + if (mif->mode == MEMIF_INTERFACE_MODE_IP) + n_rx += memif_device_input_inline ( + vm, node, mif, MEMIF_RING_S2M, qid, mode_ip); + else + n_rx += memif_device_input_inline ( + vm, node, mif, MEMIF_RING_S2M, qid, mode_eth); + } + } + } return n_rx; } -#ifndef CLIB_MULTIARCH_VARIANT /* *INDENT-OFF* */ VLIB_REGISTER_NODE (memif_input_node) = { - .function = memif_input_fn, .name = "memif-input", + .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED, .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, + .error_counters = memif_input_error_counters, }; -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* */