summaryrefslogtreecommitdiffstats
path: root/src/plugins/avf/input.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins/avf/input.c')
-rw-r--r--src/plugins/avf/input.c131
1 files changed, 96 insertions, 35 deletions
diff --git a/src/plugins/avf/input.c b/src/plugins/avf/input.c
index 94854af5564..8072e94346b 100644
--- a/src/plugins/avf/input.c
+++ b/src/plugins/avf/input.c
@@ -24,8 +24,7 @@
#include <avf/avf.h>
#define foreach_avf_input_error \
- _(BUFFER_ALLOC, "buffer alloc error") \
- _(RX_PACKET_ERROR, "Rx packet errors")
+ _(BUFFER_ALLOC, "buffer alloc error")
typedef enum
{
@@ -128,11 +127,44 @@ avf_rxq_refill (vlib_main_t * vm, vlib_node_runtime_t * node, avf_rxq_t * rxq,
*(rxq->qrx_tail) = slot;
}
+
+static_always_inline uword
+avf_rx_attach_tail (vlib_main_t * vm, vlib_buffer_t * bt, vlib_buffer_t * b,
+ u64 qw1, avf_rx_tail_t * t)
+{
+ vlib_buffer_t *hb = b;
+ u32 tlnifb = 0, i = 0;
+
+ if (qw1 & AVF_RXD_STATUS_EOP)
+ return 0;
+
+ while ((qw1 & AVF_RXD_STATUS_EOP) == 0)
+ {
+ ASSERT (i < AVF_RX_MAX_DESC_IN_CHAIN - 1);
+ ASSERT (qw1 & AVF_RXD_STATUS_DD);
+ qw1 = t->qw1s[i];
+ b->next_buffer = t->buffers[i];
+ b->flags |= VLIB_BUFFER_NEXT_PRESENT;
+ b = vlib_get_buffer (vm, b->next_buffer);
+ clib_memcpy_fast (b, bt, sizeof (vlib_buffer_t));
+ tlnifb += b->current_length = qw1 >> AVF_RXD_LEN_SHIFT;
+ i++;
+ }
+
+ hb->total_length_not_including_first_buffer = tlnifb;
+ hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ return tlnifb;
+}
+
static_always_inline uword
avf_process_rx_burst (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_buffer_t * bt, u64 * qw1,
- vlib_buffer_t ** b, u32 n_left)
+ avf_per_thread_data_t * ptd, u32 n_left,
+ int maybe_multiseg)
{
+ vlib_buffer_t *bt = &ptd->buffer_template;
+ vlib_buffer_t **b = ptd->bufs;
+ u64 *qw1 = ptd->qw1s;
+ avf_rx_tail_t *tail = ptd->tails;
uword n_rx_bytes = 0;
while (n_left >= 4)
@@ -145,19 +177,20 @@ avf_process_rx_burst (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_prefetch_buffer_header (b[11], LOAD);
}
+ clib_memcpy64_x4 (b[0], b[1], b[2], b[3], bt);
+
n_rx_bytes += b[0]->current_length = qw1[0] >> AVF_RXD_LEN_SHIFT;
n_rx_bytes += b[1]->current_length = qw1[1] >> AVF_RXD_LEN_SHIFT;
n_rx_bytes += b[2]->current_length = qw1[2] >> AVF_RXD_LEN_SHIFT;
n_rx_bytes += b[3]->current_length = qw1[3] >> AVF_RXD_LEN_SHIFT;
- clib_memcpy_fast (vnet_buffer (b[0])->sw_if_index,
- vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
- clib_memcpy_fast (vnet_buffer (b[1])->sw_if_index,
- vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
- clib_memcpy_fast (vnet_buffer (b[2])->sw_if_index,
- vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
- clib_memcpy_fast (vnet_buffer (b[3])->sw_if_index,
- vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+ if (maybe_multiseg)
+ {
+ n_rx_bytes += avf_rx_attach_tail (vm, bt, b[0], qw1[0], tail + 0);
+ n_rx_bytes += avf_rx_attach_tail (vm, bt, b[1], qw1[1], tail + 1);
+ n_rx_bytes += avf_rx_attach_tail (vm, bt, b[2], qw1[2], tail + 2);
+ n_rx_bytes += avf_rx_attach_tail (vm, bt, b[3], qw1[3], tail + 3);
+ }
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[1]);
@@ -166,20 +199,24 @@ avf_process_rx_burst (vlib_main_t * vm, vlib_node_runtime_t * node,
/* next */
qw1 += 4;
+ tail += 4;
b += 4;
n_left -= 4;
}
while (n_left)
{
+ clib_memcpy_fast (b[0], bt, sizeof (vlib_buffer_t));
+
n_rx_bytes += b[0]->current_length = qw1[0] >> AVF_RXD_LEN_SHIFT;
- clib_memcpy_fast (vnet_buffer (b[0])->sw_if_index,
- vnet_buffer (bt)->sw_if_index, 2 * sizeof (u32));
+ if (maybe_multiseg)
+ n_rx_bytes += avf_rx_attach_tail (vm, bt, b[0], qw1[0], tail + 0);
VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b[0]);
/* next */
qw1 += 1;
+ tail += 1;
b += 1;
n_left -= 1;
}
@@ -197,13 +234,11 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
vec_elt_at_index (am->per_thread_data, thr_idx);
avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, qid);
u32 n_trace, n_rx_packets = 0, n_rx_bytes = 0;
- u16 n_desc = 0;
+ u16 n_tail_desc = 0;
u64 or_qw1 = 0;
u32 *bi, *to_next, n_left_to_next;
- vlib_buffer_t *bufs[AVF_RX_VECTOR_SZ];
vlib_buffer_t *bt = &ptd->buffer_template;
u32 next_index = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT;
- u64 qw1s[AVF_RX_VECTOR_SZ];
u16 next = rxq->next;
u16 size = rxq->size;
u16 mask = size - 1;
@@ -226,7 +261,7 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
copy needed data from descriptor to rx vector */
bi = to_next;
- while (n_desc < AVF_RX_VECTOR_SZ)
+ while (n_rx_packets < AVF_RX_VECTOR_SZ)
{
if (next + 11 < size)
{
@@ -242,7 +277,7 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
}
#ifdef CLIB_HAVE_VEC256
- if (n_desc >= AVF_RX_VECTOR_SZ - 4 || next >= size - 4)
+ if (n_rx_packets >= AVF_RX_VECTOR_SZ - 4 || next >= size - 4)
goto one_by_one;
q1x4 = u64x4_gather ((void *) &d[0].qword[1], (void *) &d[1].qword[1],
@@ -253,43 +288,65 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
goto one_by_one;
or_q1x4 |= q1x4;
- u64x4_store_unaligned (q1x4, qw1s + n_desc);
+ u64x4_store_unaligned (q1x4, ptd->qw1s + n_rx_packets);
clib_memcpy_fast (bi, rxq->bufs + next, 4 * sizeof (u32));
/* next */
next = (next + 4) & mask;
d = fd + next;
- n_desc += 4;
+ n_rx_packets += 4;
bi += 4;
continue;
one_by_one:
#endif
CLIB_PREFETCH ((void *) (fd + ((next + 8) & mask)),
CLIB_CACHE_LINE_BYTES, LOAD);
- if ((d->qword[1] & AVF_RXD_STATUS_DD) == 0)
+
+ if (avf_rxd_is_not_dd (d))
break;
- or_qw1 |= qw1s[n_desc] = d[0].qword[1];
bi[0] = rxq->bufs[next];
/* deal with chained buffers */
- while (PREDICT_FALSE ((d->qword[1] & AVF_RXD_STATUS_EOP) == 0))
+ if (PREDICT_FALSE (avf_rxd_is_not_eop (d)))
{
- clib_error ("fixme");
+ u16 tail_desc = 0;
+ u16 tail_next = next;
+ avf_rx_tail_t *tail = ptd->tails + n_rx_packets;
+ avf_rx_desc_t *td;
+ do
+ {
+ tail_next = (tail_next + 1) & mask;
+ td = fd + tail_next;
+
+ /* bail out in case of incomplete transaction */
+ if (avf_rxd_is_not_dd (td))
+ goto no_more_desc;
+
+ or_qw1 |= tail->qw1s[tail_desc] = td[0].qword[1];
+ tail->buffers[tail_desc] = rxq->bufs[tail_next];
+ tail_desc++;
+ }
+ while (avf_rxd_is_not_eop (td));
+ next = tail_next;
+ n_tail_desc += tail_desc;
}
+ or_qw1 |= ptd->qw1s[n_rx_packets] = d[0].qword[1];
+
/* next */
next = (next + 1) & mask;
d = fd + next;
- n_desc++;
+ n_rx_packets++;
bi++;
}
+no_more_desc:
- if (n_desc == 0)
+ if (n_rx_packets == 0)
goto done;
rxq->next = next;
- rxq->n_enqueued -= n_desc;
+ rxq->n_enqueued -= n_rx_packets + n_tail_desc;
#ifdef CLIB_HAVE_VEC256
or_qw1 |= or_q1x4[0] | or_q1x4[1] | or_q1x4[2] | or_q1x4[3];
@@ -301,20 +358,22 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
else
avf_rxq_refill (vm, node, rxq, 0 /* use_va_dma */ );
- vlib_get_buffers (vm, to_next, bufs, n_desc);
- n_rx_packets = n_desc;
+ vlib_get_buffers (vm, to_next, ptd->bufs, n_rx_packets);
vnet_buffer (bt)->sw_if_index[VLIB_RX] = ad->sw_if_index;
vnet_buffer (bt)->sw_if_index[VLIB_TX] = ~0;
- n_rx_bytes = avf_process_rx_burst (vm, node, bt, qw1s, bufs, n_desc);
+ if (n_tail_desc)
+ n_rx_bytes = avf_process_rx_burst (vm, node, ptd, n_rx_packets, 1);
+ else
+ n_rx_bytes = avf_process_rx_burst (vm, node, ptd, n_rx_packets, 0);
/* packet trace if enabled */
if (PREDICT_FALSE ((n_trace = vlib_get_trace_count (vm, node))))
{
- u32 n_left = n_rx_packets;
+ u32 n_left = n_rx_packets, i = 0, j;
bi = to_next;
- u64 *qw1 = qw1s;
+
while (n_trace && n_left)
{
vlib_buffer_t *b;
@@ -324,13 +383,15 @@ avf_device_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
tr = vlib_add_trace (vm, node, b, sizeof (*tr));
tr->next_index = next_index;
tr->hw_if_index = ad->hw_if_index;
- tr->qw1 = qw1[0];
+ tr->qw1s[0] = ptd->qw1s[i];
+ for (j = 1; j < AVF_RX_MAX_DESC_IN_CHAIN; j++)
+ tr->qw1s[j] = ptd->tails[i].qw1s[j - 1];
/* next */
n_trace--;
n_left--;
bi++;
- qw1++;
+ i++;
}
vlib_set_trace_count (vm, node, n_trace);
}