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authorDamjan Marion <damarion@cisco.com>2018-05-30 12:49:32 +0200
committerDamjan Marion <damarion@cisco.com>2018-06-02 11:50:23 +0200
commitba614d63a8dabaf95f012323c5f9bfba4a23f5cf (patch)
tree8d177ddd31bc0277df74a59b253422abc508b981 /src/plugins/avf/input.c
parent4bc1796b346efd10f3fb19b176ff089179263a24 (diff)
AVF input node rework
Change-Id: Ib121b24935d5c706cfba6e4b6d321086a38cad91 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/avf/input.c')
-rw-r--r--src/plugins/avf/input.c532
1 files changed, 332 insertions, 200 deletions
diff --git a/src/plugins/avf/input.c b/src/plugins/avf/input.c
index 5b7f48a3ed7..475b207ed74 100644
--- a/src/plugins/avf/input.c
+++ b/src/plugins/avf/input.c
@@ -45,27 +45,14 @@ static __clib_unused char *avf_input_error_strings[] = {
#define AVF_RX_DESC_STATUS_DD AVF_RX_DESC_STATUS(0)
#define AVF_RX_DESC_STATUS_EOP AVF_RX_DESC_STATUS(1)
-static_always_inline void
-avf_input_trace (vlib_main_t * vm, vlib_node_runtime_t * node, u32 next0,
- vlib_buffer_t * b0, uword * n_trace, avf_device_t * ad,
- avf_rx_vector_entry_t * rxve)
-{
- avf_input_trace_t *tr;
- vlib_trace_buffer (vm, node, next0, b0, /* follow_chain */ 0);
- vlib_set_trace_count (vm, node, --(*n_trace));
- tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->next_index = next0;
- tr->hw_if_index = ad->hw_if_index;
- clib_memcpy (&tr->rxve, rxve, sizeof (avf_rx_vector_entry_t));
-}
-
#define AVF_INPUT_REFILL_TRESHOLD 32
static_always_inline void
avf_rxq_refill (vlib_main_t * vm, vlib_node_runtime_t * node, avf_rxq_t * rxq,
int use_iova)
{
u16 n_refill, mask, n_alloc, slot;
- avf_rx_desc_t *d;
+ u32 s0, s1, s2, s3;
+ avf_rx_desc_t *d[4];
n_refill = rxq->size - 1 - rxq->n_bufs;
if (PREDICT_TRUE (n_refill <= AVF_INPUT_REFILL_TRESHOLD))
@@ -89,20 +76,77 @@ avf_rxq_refill (vlib_main_t * vm, vlib_node_runtime_t * node, avf_rxq_t * rxq,
rxq->n_bufs += n_alloc;
- while (n_alloc--)
+ while (n_alloc >= 4)
+ {
+ if (PREDICT_TRUE (slot + 3 < rxq->size))
+ {
+ s0 = slot;
+ s1 = slot + 1;
+ s2 = slot + 2;
+ s3 = slot + 3;
+ }
+ else
+ {
+ s0 = slot;
+ s1 = (slot + 1) & mask;
+ s2 = (slot + 2) & mask;
+ s3 = (slot + 3) & mask;
+ }
+
+ d[0] = ((avf_rx_desc_t *) rxq->descs) + s0;
+ d[1] = ((avf_rx_desc_t *) rxq->descs) + s1;
+ d[2] = ((avf_rx_desc_t *) rxq->descs) + s2;
+ d[3] = ((avf_rx_desc_t *) rxq->descs) + s3;
+ if (use_iova)
+ {
+ vlib_buffer_t *b;
+ b = vlib_get_buffer (vm, rxq->bufs[s0]);
+ d[0]->qword[0] = pointer_to_uword (b->data);
+ b = vlib_get_buffer (vm, rxq->bufs[s1]);
+ d[1]->qword[0] = pointer_to_uword (b->data);
+ b = vlib_get_buffer (vm, rxq->bufs[s2]);
+ d[2]->qword[0] = pointer_to_uword (b->data);
+ b = vlib_get_buffer (vm, rxq->bufs[s3]);
+ d[3]->qword[0] = pointer_to_uword (b->data);
+ }
+ else
+ {
+ d[0]->qword[0] =
+ vlib_get_buffer_data_physical_address (vm, rxq->bufs[s0]);
+ d[1]->qword[0] =
+ vlib_get_buffer_data_physical_address (vm, rxq->bufs[s1]);
+ d[2]->qword[0] =
+ vlib_get_buffer_data_physical_address (vm, rxq->bufs[s2]);
+ d[3]->qword[0] =
+ vlib_get_buffer_data_physical_address (vm, rxq->bufs[s3]);
+ }
+
+ d[0]->qword[1] = 0;
+ d[1]->qword[1] = 0;
+ d[2]->qword[1] = 0;
+ d[3]->qword[1] = 0;
+
+ /* next */
+ slot = (slot + 4) & mask;
+ n_alloc -= 4;
+ }
+ while (n_alloc)
{
- u64 addr;
- d = ((avf_rx_desc_t *) rxq->descs) + slot;
+ s0 = slot;
+ d[0] = ((avf_rx_desc_t *) rxq->descs) + s0;
if (use_iova)
{
- vlib_buffer_t *b = vlib_get_buffer (vm, rxq->bufs[slot]);
- addr = pointer_to_uword (b->data);
+ vlib_buffer_t *b = vlib_get_buffer (vm, rxq->bufs[s0]);
+ d[0]->qword[0] = pointer_to_uword (b->data);
}
else
- addr = vlib_get_buffer_data_physical_address (vm, rxq->bufs[slot]);
- d->qword[0] = addr;
- d->qword[1] = 0;
+ d[0]->qword[0] =
+ vlib_get_buffer_data_physical_address (vm, rxq->bufs[s0]);
+ d[0]->qword[1] = 0;
+
+ /* next */
slot = (slot + 1) & mask;
+ n_alloc -= 1;
}
CLIB_MEMORY_BARRIER ();
@@ -111,7 +155,7 @@ avf_rxq_refill (vlib_main_t * vm, vlib_node_runtime_t * node, avf_rxq_t * rxq,
static_always_inline void
avf_check_for_error (vlib_node_runtime_t * node, avf_rx_vector_entry_t * rxve,
- vlib_buffer_t * b, u32 * next)
+ vlib_buffer_t * b, u16 * next)
{
avf_main_t *am = &avf_main;
avf_ptype_t *ptype;
@@ -142,9 +186,139 @@ avf_find_next (avf_rx_vector_entry_t * rxve, vlib_buffer_t * b,
static_always_inline uword
+avf_process_rx_burst (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_buffer_t * bt, avf_rx_vector_entry_t * rxve,
+ vlib_buffer_t ** b, u16 * next, u32 n_rxv,
+ u8 maybe_error, int known_next)
+{
+ uword n_rx_bytes = 0;
+
+ while (n_rxv >= 4)
+ {
+ if (n_rxv >= 12)
+ {
+ vlib_prefetch_buffer_header (b[8], LOAD);
+ vlib_prefetch_buffer_header (b[9], LOAD);
+ vlib_prefetch_buffer_header (b[10], LOAD);
+ vlib_prefetch_buffer_header (b[11], LOAD);
+ if (!known_next)
+ {
+ CLIB_PREFETCH (b[8]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (b[9]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (b[10]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (b[11]->data, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+ }
+
+ n_rx_bytes += b[0]->current_length = rxve[0].length;
+ n_rx_bytes += b[1]->current_length = rxve[1].length;
+ n_rx_bytes += b[2]->current_length = rxve[2].length;
+ n_rx_bytes += b[3]->current_length = rxve[3].length;
+
+ if (!known_next)
+ {
+ ethernet_header_t *e0, *e1, *e2, *e3;
+
+ e0 = (ethernet_header_t *) b[0]->data;
+ e1 = (ethernet_header_t *) b[1]->data;
+ e2 = (ethernet_header_t *) b[2]->data;
+ e3 = (ethernet_header_t *) b[3]->data;
+
+ if (ethernet_frame_is_any_tagged_x4 (e0->type, e1->type,
+ e2->type, e3->type))
+ {
+ next[0] = avf_find_next (rxve, b[0], 1);
+ next[1] = avf_find_next (rxve + 1, b[1], 1);
+ next[2] = avf_find_next (rxve + 2, b[2], 1);
+ next[3] = avf_find_next (rxve + 3, b[3], 1);
+ }
+ else
+ {
+ next[0] = avf_find_next (rxve, b[0], 0);
+ next[1] = avf_find_next (rxve + 1, b[1], 0);
+ next[2] = avf_find_next (rxve + 2, b[2], 0);
+ next[3] = avf_find_next (rxve + 3, b[3], 0);
+ }
+
+ if (PREDICT_FALSE (maybe_error))
+ {
+ avf_check_for_error (node, rxve + 0, b[0], next);
+ avf_check_for_error (node, rxve + 1, b[1], next + 1);
+ avf_check_for_error (node, rxve + 2, b[2], next + 2);
+ avf_check_for_error (node, rxve + 3, b[3], next + 3);
+ }
+ }
+ else if (bt->current_config_index)
+ {
+ b[0]->current_config_index = bt->current_config_index;
+ b[1]->current_config_index = bt->current_config_index;
+ b[2]->current_config_index = bt->current_config_index;
+ b[3]->current_config_index = bt->current_config_index;
+ vnet_buffer (b[0])->feature_arc_index =
+ vnet_buffer (bt)->feature_arc_index;
+ vnet_buffer (b[1])->feature_arc_index =
+ vnet_buffer (bt)->feature_arc_index;
+ vnet_buffer (b[2])->feature_arc_index =
+ vnet_buffer (bt)->feature_arc_index;
+ vnet_buffer (b[3])->feature_arc_index =
+ vnet_buffer (bt)->feature_arc_index;
+ }
+
+ clib_memcpy (vnet_buffer (b[0])->sw_if_index,
+ vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+ clib_memcpy (vnet_buffer (b[1])->sw_if_index,
+ vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+ clib_memcpy (vnet_buffer (b[2])->sw_if_index,
+ vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+ clib_memcpy (vnet_buffer (b[3])->sw_if_index,
+ vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[2]);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[3]);
+
+ /* next */
+ rxve += 4;
+ b += 4;
+ next += 4;
+ n_rxv -= 4;
+ }
+ while (n_rxv)
+ {
+ b[0]->current_length = rxve->length;
+ n_rx_bytes += b[0]->current_length;
+
+ if (!known_next)
+ {
+ next[0] = avf_find_next (rxve, b[0], 1);
+ avf_check_for_error (node, rxve + 0, b[0], next);
+ }
+ else if (bt->current_config_index)
+ {
+ b[0]->current_config_index = bt->current_config_index;
+ vnet_buffer (b[0])->feature_arc_index =
+ vnet_buffer (bt)->feature_arc_index;
+ }
+
+ clib_memcpy (vnet_buffer (b[0])->sw_if_index,
+ vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+
+ /* next */
+ rxve += 1;
+ b += 1;
+ next += 1;
+ n_rxv -= 1;
+
+ }
+ return n_rx_bytes;
+}
+
+static_always_inline uword
avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * frame, avf_device_t * ad, u16 qid,
- int with_features_or_tracing)
+ vlib_frame_t * frame, avf_device_t * ad, u16 qid)
{
avf_main_t *am = &avf_main;
vnet_main_t *vnm = vnet_get_main ();
@@ -152,27 +326,95 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
avf_per_thread_data_t *ptd =
vec_elt_at_index (am->per_thread_data, thr_idx);
avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, qid);
- avf_rx_vector_entry_t *rxve;
- uword n_trace = vlib_get_trace_count (vm, node);
- u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+ avf_rx_vector_entry_t *rxve = 0;
+ uword n_trace;
avf_rx_desc_t *d;
- u32 *to_next = 0;
- u32 n_rx_packets = 0;
- u32 n_rx_bytes = 0;
- u32 sw_if_idx[VLIB_N_RX_TX] = {[VLIB_RX] = ad->sw_if_index,[VLIB_TX] = ~0 };
+ u32 n_rx_packets = 0, n_rx_bytes = 0;
u16 mask = rxq->size - 1;
u16 n_rxv = 0;
u8 maybe_error = 0;
+ u32 buffer_indices[AVF_RX_VECTOR_SZ], *bi;
+ u16 nexts[AVF_RX_VECTOR_SZ], *next;
+ vlib_buffer_t *bufs[AVF_RX_VECTOR_SZ];
+ vlib_buffer_t *bt = &ptd->buffer_template;
+ int known_next = 0;
+ u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
+
+ STATIC_ASSERT_SIZEOF (avf_rx_vector_entry_t, 8);
+ STATIC_ASSERT_OFFSET_OF (avf_rx_vector_entry_t, status, 0);
+ STATIC_ASSERT_OFFSET_OF (avf_rx_vector_entry_t, length, 4);
+ STATIC_ASSERT_OFFSET_OF (avf_rx_vector_entry_t, ptype, 6);
+ STATIC_ASSERT_OFFSET_OF (avf_rx_vector_entry_t, error, 7);
/* fetch up to AVF_RX_VECTOR_SZ from the rx ring, unflatten them and
copy needed data from descriptor to rx vector */
d = rxq->descs + rxq->next;
- while ((d->qword[1] & AVF_RX_DESC_STATUS_DD) && n_rxv < AVF_RX_VECTOR_SZ)
+ bi = buffer_indices;
+ while (n_rxv < AVF_RX_VECTOR_SZ)
{
- u16 next_pf = (rxq->next + 8) & mask;
- CLIB_PREFETCH (rxq->descs + next_pf, CLIB_CACHE_LINE_BYTES, LOAD);
+ if (rxq->next + 11 < rxq->size)
+ {
+ int stride = 8;
+ CLIB_PREFETCH (rxq->descs + (rxq->next + stride),
+ CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (rxq->descs + (rxq->next + stride + 1),
+ CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (rxq->descs + (rxq->next + stride + 2),
+ CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (rxq->descs + (rxq->next + stride + 3),
+ CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+
+#ifdef CLIB_HAVE_VEC256
+ u64x4 q1x4, v, err4;
+ u64x4 status_dd_eop_mask = u64x4_splat (0x3);
+
+ if (n_rxv >= AVF_RX_VECTOR_SZ - 4)
+ goto one_by_one;
+
+ if (rxq->next >= rxq->size - 4)
+ goto one_by_one;
+
+ /* load 1st quadword of 4 dscriptors into 256-bit vector register */
+ /* *INDENT-OFF* */
+ q1x4 = (u64x4) {
+ d[0].qword[1],
+ d[1].qword[1],
+ d[2].qword[1],
+ d[3].qword[1]
+ };
+ /* *INDENT-ON* */
+
+ /* not all packets are ready or at least one of them is chained */
+ if (!u64x4_is_equal (q1x4 & status_dd_eop_mask, status_dd_eop_mask))
+ goto one_by_one;
+
+ /* shift and mask status, length, ptype and err */
+ v = q1x4 & u64x4_splat ((u64) 0x3FFFFULL);
+ v |= (q1x4 >> 6) & u64x4_splat ((u64) 0xFFFF << 32);
+ v |= (q1x4 << 18) & u64x4_splat ((u64) 0xFF << 48);
+ v |= err4 = (q1x4 << 37) & u64x4_splat ((u64) 0xFF << 56);
+
+ u64x4_store_unaligned (v, ptd->rx_vector + n_rxv);
+ maybe_error |= !u64x4_is_all_zero (err4);
+
+ clib_memcpy (bi, rxq->bufs + rxq->next, 4 * sizeof (u32));
+
+ /* next */
+ rxq->next = (rxq->next + 4) & mask;
+ d = rxq->descs + rxq->next;
+ n_rxv += 4;
+ rxq->n_bufs -= 4;
+ bi += 4;
+ continue;
+ one_by_one:
+#endif
+ CLIB_PREFETCH (rxq->descs + ((rxq->next + 8) & mask),
+ CLIB_CACHE_LINE_BYTES, LOAD);
+ if ((d->qword[1] & AVF_RX_DESC_STATUS_DD) == 0)
+ break;
rxve = ptd->rx_vector + n_rxv;
- rxve->bi = rxq->bufs[rxq->next];
+ bi[0] = rxq->bufs[rxq->next];
rxve->status = avf_get_u64_bits (d, 8, 18, 0);
rxve->error = avf_get_u64_bits (d, 8, 26, 19);
rxve->ptype = avf_get_u64_bits (d, 8, 37, 30);
@@ -190,10 +432,11 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
d = rxq->descs + rxq->next;
n_rxv++;
rxq->n_bufs--;
+ bi++;
}
if (n_rxv == 0)
- return 0;
+ goto done;
/* refill rx ring */
if (ad->flags & AVF_DEVICE_F_IOVA)
@@ -201,177 +444,70 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
else
avf_rxq_refill (vm, node, rxq, 0 /* use_iova */ );
+ vlib_get_buffers (vm, buffer_indices, bufs, n_rxv);
n_rx_packets = n_rxv;
- rxve = ptd->rx_vector;
- while (n_rxv)
- {
- u32 n_left_to_next;
- u32 bi0, bi1, bi2, bi3;
- vlib_buffer_t *b0, *b1, *b2, *b3;
- u32 next0, next1, next2, next3;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_rxv >= 12 && n_left_to_next >= 4)
- {
- vlib_buffer_t *p;
- p = vlib_get_buffer (vm, rxve[8].bi);
- vlib_prefetch_buffer_header (p, LOAD);
- CLIB_PREFETCH (p->data, CLIB_CACHE_LINE_BYTES, LOAD);
-
- p = vlib_get_buffer (vm, rxve[9].bi);
- vlib_prefetch_buffer_header (p, LOAD);
- CLIB_PREFETCH (p->data, CLIB_CACHE_LINE_BYTES, LOAD);
-
- p = vlib_get_buffer (vm, rxve[10].bi);
- vlib_prefetch_buffer_header (p, LOAD);
- CLIB_PREFETCH (p->data, CLIB_CACHE_LINE_BYTES, LOAD);
-
- p = vlib_get_buffer (vm, rxve[11].bi);
- vlib_prefetch_buffer_header (p, LOAD);
- CLIB_PREFETCH (p->data, CLIB_CACHE_LINE_BYTES, LOAD);
-
- to_next[0] = bi0 = rxve[0].bi;
- to_next[1] = bi1 = rxve[1].bi;
- to_next[2] = bi2 = rxve[2].bi;
- to_next[3] = bi3 = rxve[3].bi;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
- b2 = vlib_get_buffer (vm, bi2);
- b3 = vlib_get_buffer (vm, bi3);
-
- b0->current_length = rxve[0].length;
- b1->current_length = rxve[1].length;
- b2->current_length = rxve[2].length;
- b3->current_length = rxve[3].length;
-
- n_rx_bytes += b0->current_length;
- n_rx_bytes += b1->current_length;
- n_rx_bytes += b2->current_length;
- n_rx_bytes += b3->current_length;
-
- if (PREDICT_TRUE (ad->per_interface_next_index == ~0))
- {
- ethernet_header_t *e0, *e1, *e2, *e3;
-
- e0 = (ethernet_header_t *) b0->data;
- e1 = (ethernet_header_t *) b1->data;
- e2 = (ethernet_header_t *) b2->data;
- e3 = (ethernet_header_t *) b3->data;
-
- if (ethernet_frame_is_any_tagged_x4 (e0->type, e1->type,
- e2->type, e3->type))
- {
- next0 = avf_find_next (rxve, b0, 1);
- next1 = avf_find_next (rxve + 1, b1, 1);
- next2 = avf_find_next (rxve + 2, b2, 1);
- next3 = avf_find_next (rxve + 3, b3, 1);
- }
- else
- {
- next0 = avf_find_next (rxve, b0, 0);
- next1 = avf_find_next (rxve + 1, b1, 0);
- next2 = avf_find_next (rxve + 2, b2, 0);
- next3 = avf_find_next (rxve + 3, b3, 0);
- }
-
- if (with_features_or_tracing)
- vnet_feature_start_device_input_x4 (ad->sw_if_index, &next0,
- &next1, &next2, &next3,
- b0, b1, b2, b3);
-
- if (PREDICT_FALSE (maybe_error))
- {
- avf_check_for_error (node, rxve + 0, b0, &next0);
- avf_check_for_error (node, rxve + 1, b1, &next1);
- avf_check_for_error (node, rxve + 2, b2, &next2);
- avf_check_for_error (node, rxve + 3, b3, &next3);
- }
- }
- else
- next0 = next1 = next2 = next3 = ad->per_interface_next_index;
-
- clib_memcpy (vnet_buffer (b0)->sw_if_index, sw_if_idx,
- sizeof (sw_if_idx));
- clib_memcpy (vnet_buffer (b1)->sw_if_index, sw_if_idx,
- sizeof (sw_if_idx));
- clib_memcpy (vnet_buffer (b2)->sw_if_index, sw_if_idx,
- sizeof (sw_if_idx));
- clib_memcpy (vnet_buffer (b3)->sw_if_index, sw_if_idx,
- sizeof (sw_if_idx));
-
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
-
- if (with_features_or_tracing && PREDICT_FALSE (n_trace))
- {
- avf_input_trace (vm, node, next0, b0, &n_trace, ad, rxve);
- if (n_trace)
- avf_input_trace (vm, node, next1, b1, &n_trace, ad, rxve + 1);
- if (n_trace)
- avf_input_trace (vm, node, next2, b2, &n_trace, ad, rxve + 2);
- if (n_trace)
- avf_input_trace (vm, node, next3, b3, &n_trace, ad, rxve + 3);
- }
- /* next */
- to_next += 4;
- n_left_to_next -= 4;
- rxve += 4;
- n_rxv -= 4;
-
- /* enqueue */
- vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1, bi2, bi3,
- next0, next1, next2, next3);
- }
- while (n_rxv && n_left_to_next)
- {
- bi0 = rxve[0].bi;
- to_next[0] = bi0;
- b0 = vlib_get_buffer (vm, bi0);
+ vnet_buffer (bt)->sw_if_index[VLIB_RX] = ad->sw_if_index;
+ vnet_buffer (bt)->sw_if_index[VLIB_TX] = ~0;
- b0->current_length = rxve->length;
- n_rx_bytes += b0->current_length;
+ /* receive burst of packets from DPDK PMD */
+ if (PREDICT_FALSE (ad->per_interface_next_index != ~0))
+ {
+ known_next = 1;
+ next_index = ad->per_interface_next_index;
+ }
- if (PREDICT_TRUE (ad->per_interface_next_index == ~0))
- {
- next0 = avf_find_next (rxve, b0, 1);
- if (with_features_or_tracing)
- vnet_feature_start_device_input_x1 (ad->sw_if_index, &next0,
- b0);
- avf_check_for_error (node, rxve + 0, b0, &next0);
- }
- else
- next0 = ad->per_interface_next_index;
+ /* as all packets belong to thr same interface feature arc lookup
+ can be don once and result stored */
+ if (PREDICT_FALSE (vnet_device_input_have_features (ad->sw_if_index)))
+ {
+ vnet_feature_start_device_input_x1 (ad->sw_if_index, &next_index, bt);
+ known_next = 1;
+ }
- clib_memcpy (vnet_buffer (b0)->sw_if_index, sw_if_idx,
- sizeof (sw_if_idx));
+ if (known_next)
+ {
+ clib_memset_u16 (nexts, next_index, n_rxv);
+ n_rx_bytes = avf_process_rx_burst (vm, node, bt, ptd->rx_vector, bufs,
+ nexts, n_rxv, maybe_error, 1);
+ vnet_buffer (bt)->feature_arc_index = 0;
+ bt->current_config_index = 0;
+ }
+ else
+ n_rx_bytes = avf_process_rx_burst (vm, node, bt, ptd->rx_vector, bufs,
+ nexts, n_rxv, maybe_error, 0);
- VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
- if (with_features_or_tracing && PREDICT_FALSE (n_trace > 0))
- avf_input_trace (vm, node, next0, b0, &n_trace, ad, rxve);
+ /* packet trace if enabled */
+ if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node))))
+ {
+ u32 n_left = n_rx_packets;
+ bi = buffer_indices;
+ next = nexts;
+ while (n_trace && n_left)
+ {
+ vlib_buffer_t *b;
+ avf_input_trace_t *tr;
+ b = vlib_get_buffer (vm, bi[0]);
+ vlib_trace_buffer (vm, node, next[0], b, /* follow_chain */ 0);
+ tr = vlib_add_trace (vm, node, b, sizeof (*tr));
+ tr->next_index = next[0];
+ tr->hw_if_index = ad->hw_if_index;
+ clib_memcpy (&tr->rxve, rxve, sizeof (avf_rx_vector_entry_t));
/* next */
- to_next += 1;
- n_left_to_next -= 1;
- rxve += 1;
- n_rxv -= 1;
-
- /* enqueue */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
+ n_trace--;
+ n_left--;
+ bi++;
+ next++;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ vlib_set_trace_count (vm, node, n_trace);
}
-
+ vlib_buffer_enqueue_to_next (vm, node, buffer_indices, nexts, n_rx_packets);
vlib_increment_combined_counter (vnm->interface_main.combined_sw_if_counters
+ VNET_INTERFACE_COUNTER_RX, thr_idx,
ad->hw_if_index, n_rx_packets, n_rx_bytes);
+done:
return n_rx_packets;
}
@@ -389,11 +525,7 @@ VLIB_NODE_FN (avf_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
ad = vec_elt_at_index (am->devices, dq->dev_instance);
if ((ad->flags & AVF_DEVICE_F_ADMIN_UP) == 0)
continue;
- if (vnet_device_input_have_features (ad->sw_if_index) ||
- vlib_get_trace_count (vm, node))
- n_rx += avf_device_input_inline (vm, node, frame, ad, dq->queue_id, 1);
- else
- n_rx += avf_device_input_inline (vm, node, frame, ad, dq->queue_id, 0);
+ n_rx += avf_device_input_inline (vm, node, frame, ad, dq->queue_id);
}
return n_rx;
}