#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vnet/ethernet/ethernet.h>
-#include <vnet/devices/devices.h>
+#include <vnet/interface/rx_queue_funcs.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")
+#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 _
};
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))
+ if (PREDICT_TRUE
+ (b != 0 && vlib_trace_buffer (vm, node, next, b, /* follow_chain */ 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;
}
}
-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)
+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)
{
- 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_DEFAULT_FREE_LIST_BYTES;
- u32 next_index;
- uword n_trace = vlib_get_trace_count (vm, node);
- u32 n_rx_packets = 0, n_rx_bytes = 0;
- u32 n_left, *to_next = 0;
- u32 bi0, bi1, bi2, bi3;
- vlib_buffer_t *b0, *b1, *b2, *b3;
- u32 thread_index = vlib_get_thread_index ();
- memif_per_thread_data_t *ptd = vec_elt_at_index (mm->per_thread_data,
- thread_index);
- vlib_buffer_t *bt = &ptd->buffer_template;
- 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;
+ 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)
+ {
+ 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)
+ {
+ n_desc = i;
+ if (++n_pkts == MEMIF_RX_VECTOR_SZ)
+ goto frame_full;
+ }
+ }
+frame_full:
- mq = vec_elt_at_index (mif->rx_queues, qid);
- ring = mq->ring;
- ring_size = 1 << mq->log2_ring_size;
- mask = ring_size - 1;
+ /* done */
+ ptd->n_packets = n_pkts;
+ return n_desc;
+}
- next_index = (mode == MEMIF_INTERFACE_MODE_IP) ?
- VNET_DEVICE_INPUT_NEXT_IP6_INPUT : VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+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;
+}
- /* 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;
+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;
+
+ 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;
+ }
+ xor_status |= desc_status[i].as_u8;
+ }
+ ptd->max_desc_len = max_len;
+ ptd->xor_status = xor_status;
+ ptd->n_rx_bytes = n_rx_bytes;
+}
- /* 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;
+static_always_inline u32
+memif_process_desc (vlib_main_t *vm, vlib_node_runtime_t *node,
+ memif_per_thread_data_t *ptd, memif_if_t *mif)
+{
+ 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;
+ int bad_packets = 0;
/* construct copy and packet vector out of ring slots */
- while (n_slots && n_rx_packets < MEMIF_RX_VECTOR_SZ)
+ while (n_left)
{
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;
+
+ 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;
+ i++; /* next descriptor */
+ n_bytes_left = desc_len[i];
- /* slave resets buffer length,
- * so it can produce full size buffer for master
- */
- if (type == MEMIF_RING_M2S)
- d0->length = mif->run.buffer_size;
+ packet_len += n_bytes_left;
+ mb0 = desc_data[i];
- po->packet_len += n_bytes_left;
- if (PREDICT_FALSE (last_region != d0->region))
+ if (PREDICT_FALSE (desc_status[i].err))
{
- last_region_shm = mif->regions[d0->region].shm;
- last_region = d0->region;
+ vlib_error_count (vm, node->node_index, MEMIF_INPUT_ERROR_BAD_DESC,
+ 1);
+ bad_packets++;
+ ASSERT (n_buffers > 0);
+ n_buffers--;
+ goto next_packet;
}
- mb0 = last_region_shm + d0->offset;
+ 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));
- do
+ if (desc_status[i].next)
{
- 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;
+ src_off = 0;
+ goto next_slot;
}
- while (PREDICT_FALSE (n_bytes_left));
- cur_slot++;
- n_slots--;
- if ((d0->flags & MEMIF_DESC_FLAG_NEXT) && n_slots)
+ /* update packet op */
+ po->packet_len = packet_len;
+ po++;
+
+ next_packet:
+ /* next packet */
+ n_left--;
+ }
+ ASSERT (ptd->n_packets >= bad_packets);
+ ptd->n_packets -= bad_packets;
+ 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)
{
- src_off = 0;
- goto next_slot;
+ 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 void
+memif_advance_ring (memif_ring_type_t type, memif_queue_t *mq,
+ memif_ring_t *ring, u16 cur_slot)
+{
+ 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;
+ }
+}
+
+static_always_inline uword
+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 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;
+
+ start_offset = (mode == MEMIF_INTERFACE_MODE_IP) ? MEMIF_IP_OFFSET : 0;
+
+ if (is_slave)
+ {
+ cur_slot = mq->last_tail;
+ n_slots = __atomic_load_n (&ring->tail, __ATOMIC_ACQUIRE) - cur_slot;
+ }
+ else
+ {
+ cur_slot = mq->last_head;
+ n_slots = __atomic_load_n (&ring->head, __ATOMIC_ACQUIRE) - cur_slot;
+ }
+
+ 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);
+
+ if (PREDICT_FALSE (n_buffers == 0))
+ {
+ /* All descriptors are bad. Release slots in the ring and bail */
+ memif_advance_ring (type, mq, ring, cur_slot);
+ goto refill;
}
/* allocate free buffers */
vec_validate_aligned (ptd->buffers, n_buffers - 1, CLIB_CACHE_LINE_BYTES);
- n_alloc = vlib_buffer_alloc (vm, ptd->buffers, n_buffers);
+ 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)
}
/* copy data */
- n_left = vec_len (ptd->copy_ops);
- co = ptd->copy_ops;
- while (n_left >= 8)
+ if (is_simple)
{
- 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 (b0->data + co[0].buffer_offset, co[0].data,
- co[0].data_len);
- clib_memcpy (b1->data + co[1].buffer_offset, co[1].data,
- co[1].data_len);
- clib_memcpy (b2->data + co[2].buffer_offset, co[2].data,
- co[2].data_len);
- clib_memcpy (b3->data + co[3].buffer_offset, co[3].data,
- co[3].data_len);
-
- co += 4;
- n_left -= 4;
+ int n_pkts = ptd->n_packets;
+ void **desc_data = ptd->desc_data;
+ u16 *desc_len = ptd->desc_len;
+
+ vlib_get_buffers (vm, ptd->buffers, buffer_ptrs, n_buffers);
+
+ 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]);
}
- while (n_left)
+ else
{
- b0 = vlib_get_buffer (vm, ptd->buffers[co[0].buffer_vec_index]);
- clib_memcpy (b0->data + co[0].buffer_offset, co[0].data,
- co[0].data_len);
- co += 1;
- n_left -= 1;
+ vlib_buffer_t *b;
+ u32 n_pkts = vec_len (ptd->copy_ops);
+ co = ptd->copy_ops;
+
+ for (i = 0; i + 8 < n_pkts; i++)
+ {
+ 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)
+ memif_advance_ring (type, mq, ring, 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);
+ 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 (is_simple)
{
- CLIB_MEMORY_STORE_BARRIER ();
- ring->tail = mq->last_head = cur_slot;
+ 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
{
- mq->last_tail = cur_slot;
+ 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);
}
- u32 n_from = n_rx_packets;
- po = ptd->packet_ops;
+ /* 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)))
+ {
+ 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--;
+ }
+
+ /* next */
+ n_left--;
+ bi++;
+ next++;
+ }
+ vlib_set_trace_count (vm, node, n_trace);
+ }
+
+ 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);
+
+ 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;
- vnet_buffer (bt)->sw_if_index[VLIB_RX] = mif->sw_if_index;
- bt->current_data = start_offset;
+ /* 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)
{
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, po[4].first_buffer_vec_index);
- b1 = vlib_get_buffer (vm, po[5].first_buffer_vec_index);
- b2 = vlib_get_buffer (vm, po[6].first_buffer_vec_index);
- b3 = vlib_get_buffer (vm, po[7].first_buffer_vec_index);
+ 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 */
- u32 fbvi0 = po[0].first_buffer_vec_index;
- u32 fbvi1 = po[1].first_buffer_vec_index;
- u32 fbvi2 = po[2].first_buffer_vec_index;
- u32 fbvi3 = po[3].first_buffer_vec_index;
- to_next[0] = bi0 = ptd->buffers[fbvi0];
- to_next[1] = bi1 = ptd->buffers[fbvi1];
- to_next[2] = bi2 = ptd->buffers[fbvi2];
- to_next[3] = bi3 = ptd->buffers[fbvi3];
+ 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);
- clib_memcpy64_x4 (b0, b1, b2, 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 + fbvi0 + 1, buffer_size);
- memif_add_to_chain (vm, b1, ptd->buffers + fbvi1 + 1, buffer_size);
- memif_add_to_chain (vm, b2, ptd->buffers + fbvi2 + 1, buffer_size);
- memif_add_to_chain (vm, b3, ptd->buffers + fbvi3 + 1, buffer_size);
+ 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)
{
/* next */
n_from -= 4;
- po += 4;
}
while (n_from && n_left_to_next)
{
/* enqueue buffer */
- u32 fbvi0 = po->first_buffer_vec_index;
- to_next[0] = bi0 = ptd->buffers[fbvi0];
+ to_next[0] = bi0 = buffers[0];
to_next += 1;
n_left_to_next--;
+ buffers += 1;
b0 = vlib_get_buffer (vm, bi0);
- clib_memcpy (b0, bt, 64);
- b0->current_length = po->packet_len;
-
- memif_add_to_chain (vm, b0, ptd->buffers + fbvi0 + 1, buffer_size);
+ 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)
{
vnet_feature_start_device_input_x1 (mif->sw_if_index,
&next0, b0);
}
-
}
/* trace */
/* next */
n_from--;
- po++;
}
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,
+ mif->sw_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;
+ head = ring->head;
+ n_slots = ring_size - head + mq->last_tail;
+ slot = head & mask;
- while (n_slots--)
- {
- u16 s = head++ & mask;
- memif_desc_t *d = &ring->desc[s];
- d->length = mif->run.buffer_size;
- }
+ 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;
- CLIB_MEMORY_STORE_BARRIER ();
- ring->head = head;
+ 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 *mm = &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 (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_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_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* */
Code Review / vpp.git / blobdiff