#include "dpdk_priv.h"
-#ifndef MAX
-#define MAX(a,b) ((a) < (b) ? (b) : (a))
-#endif
-
-#ifndef MIN
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-#endif
-
-/*
- * At least in certain versions of ESXi, vmware e1000's don't honor the
- * "strip rx CRC" bit. Set this flag to work around that bug FOR UNIT TEST ONLY.
- *
- * If wireshark complains like so:
- *
- * "Frame check sequence: 0x00000000 [incorrect, should be <hex-num>]"
- * and you're using ESXi emulated e1000's, set this flag FOR UNIT TEST ONLY.
- *
- * Note: do NOT check in this file with this workaround enabled! You'll lose
- * actual data from e.g. 10xGE interfaces. The extra 4 bytes annoy
- * wireshark, but they're harmless...
- */
-#define VMWARE_LENGTH_BUG_WORKAROUND 0
-
static char *dpdk_error_strings[] = {
#define _(n,s) s,
foreach_dpdk_error
vlib_buffer_t * b0, u32 * next0,
u8 * error0)
{
- u8 n0;
+ u32 n0;
uint16_t mb_flags = mb->ol_flags;
if (PREDICT_FALSE (mb_flags & (PKT_RX_IP_CKSUM_BAD | PKT_RX_L4_CKSUM_BAD)))
return n_buffers;
}
+
+static_always_inline void
+dpdk_process_subseq_segs (vlib_main_t *vm, vlib_buffer_t *b, struct rte_mbuf * mb, vlib_buffer_free_list_t *fl)
+{
+ u8 nb_seg = 1;
+ struct rte_mbuf *mb_seg = 0;
+ vlib_buffer_t *b_seg, *b_chain = 0;
+ mb_seg = mb->next;
+ b_chain = b;
+
+ while ((mb->nb_segs > 1) && (nb_seg < mb->nb_segs))
+ {
+ ASSERT (mb_seg != 0);
+
+ b_seg = vlib_buffer_from_rte_mbuf (mb_seg);
+ vlib_buffer_init_for_free_list (b_seg, fl);
+
+ ASSERT ((b_seg->flags & VLIB_BUFFER_NEXT_PRESENT) == 0);
+ ASSERT (b_seg->current_data == 0);
+
+ /*
+ * The driver (e.g. virtio) may not put the packet data at the start
+ * of the segment, so don't assume b_seg->current_data == 0 is correct.
+ */
+ b_seg->current_data =
+ (mb_seg->buf_addr + mb_seg->data_off) - (void *) b_seg->data;
+
+ b_seg->current_length = mb_seg->data_len;
+ b->total_length_not_including_first_buffer += mb_seg->data_len;
+
+ b_chain->flags |= VLIB_BUFFER_NEXT_PRESENT;
+ b_chain->next_buffer = vlib_get_buffer_index (vm, b_seg);
+
+ b_chain = b_seg;
+ mb_seg = mb_seg->next;
+ nb_seg++;
+ }
+}
+
+static_always_inline void
+dpdk_prefetch_buffer (struct rte_mbuf *mb)
+{
+ vlib_buffer_t *b = vlib_buffer_from_rte_mbuf (mb);
+ CLIB_PREFETCH (mb, CLIB_CACHE_LINE_BYTES, LOAD);
+ CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, STORE);
+}
+
/*
* This function is used when there are no worker threads.
* The main thread performs IO and forwards the packets.
vec_reset_length (xd->d_trace_buffers[cpu_index]);
trace_cnt = n_trace = vlib_get_trace_count (vm, node);
+ if (n_trace > 0)
+ {
+ u32 n = clib_min (n_trace, n_buffers);
+ mb_index = 0;
+
+ while (n--)
+ {
+ struct rte_mbuf *mb = xd->rx_vectors[queue_id][mb_index++];
+ vlib_buffer_t * b = vlib_buffer_from_rte_mbuf (mb);
+ vec_add1 (xd->d_trace_buffers[cpu_index], vlib_get_buffer_index (vm, b));
+ }
+ }
+
fl = vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
mb_index = 0;
while (n_buffers > 0)
{
- u32 bi0, next0;
- u8 error0;
- u32 l3_offset0;
- vlib_buffer_t *b0, *b_seg, *b_chain = 0;
+ vlib_buffer_t *b0, *b1, *b2, *b3;
+ u32 bi0, next0, l3_offset0;
+ u32 bi1, next1, l3_offset1;
+ u32 bi2, next2, l3_offset2;
+ u32 bi3, next3, l3_offset3;
+ u8 error0, error1, error2, error3;
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
- while (n_buffers > 0 && n_left_to_next > 0)
+ while (n_buffers > 8 && n_left_to_next > 4)
{
- u8 nb_seg = 1;
- struct rte_mbuf *mb = xd->rx_vectors[queue_id][mb_index];
- struct rte_mbuf *mb_seg = mb->next;
+ struct rte_mbuf *mb0 = xd->rx_vectors[queue_id][mb_index];
+ struct rte_mbuf *mb1 = xd->rx_vectors[queue_id][mb_index + 1];
+ struct rte_mbuf *mb2 = xd->rx_vectors[queue_id][mb_index + 2];
+ struct rte_mbuf *mb3 = xd->rx_vectors[queue_id][mb_index + 3];
+
+ dpdk_prefetch_buffer (xd->rx_vectors[queue_id][mb_index + 4]);
+ dpdk_prefetch_buffer (xd->rx_vectors[queue_id][mb_index + 5]);
+ dpdk_prefetch_buffer (xd->rx_vectors[queue_id][mb_index + 6]);
+ dpdk_prefetch_buffer (xd->rx_vectors[queue_id][mb_index + 7]);
- if (PREDICT_TRUE (n_buffers > 2))
+ if (xd->flags & DPDK_DEVICE_FLAG_MAYBE_MULTISEG)
{
- struct rte_mbuf *pfmb = xd->rx_vectors[queue_id][mb_index + 2];
- vlib_buffer_t *bp = vlib_buffer_from_rte_mbuf (pfmb);
- CLIB_PREFETCH (pfmb, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (bp, CLIB_CACHE_LINE_BYTES, STORE);
+ if (PREDICT_FALSE (mb0->nb_segs > 1))
+ dpdk_prefetch_buffer (mb0->next);
+ if (PREDICT_FALSE (mb1->nb_segs > 1))
+ dpdk_prefetch_buffer (mb1->next);
+ if (PREDICT_FALSE (mb2->nb_segs > 1))
+ dpdk_prefetch_buffer (mb2->next);
+ if (PREDICT_FALSE (mb3->nb_segs > 1))
+ dpdk_prefetch_buffer (mb3->next);
}
- ASSERT (mb);
-
- b0 = vlib_buffer_from_rte_mbuf (mb);
+ ASSERT (mb0);
+ ASSERT (mb1);
+ ASSERT (mb2);
+ ASSERT (mb3);
- /* Prefetch one next segment if it exists. */
- if (PREDICT_FALSE (mb->nb_segs > 1))
- {
- struct rte_mbuf *pfmb = mb->next;
- vlib_buffer_t *bp = vlib_buffer_from_rte_mbuf (pfmb);
- CLIB_PREFETCH (pfmb, CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (bp, CLIB_CACHE_LINE_BYTES, STORE);
- b_chain = b0;
- }
+ b0 = vlib_buffer_from_rte_mbuf (mb0);
+ b1 = vlib_buffer_from_rte_mbuf (mb1);
+ b2 = vlib_buffer_from_rte_mbuf (mb2);
+ b3 = vlib_buffer_from_rte_mbuf (mb3);
vlib_buffer_init_for_free_list (b0, fl);
+ vlib_buffer_init_for_free_list (b1, fl);
+ vlib_buffer_init_for_free_list (b2, fl);
+ vlib_buffer_init_for_free_list (b3, fl);
bi0 = vlib_get_buffer_index (vm, b0);
+ bi1 = vlib_get_buffer_index (vm, b1);
+ bi2 = vlib_get_buffer_index (vm, b2);
+ bi3 = vlib_get_buffer_index (vm, b3);
to_next[0] = bi0;
- to_next++;
- n_left_to_next--;
+ to_next[1] = bi1;
+ to_next[2] = bi2;
+ to_next[3] = bi3;
+ to_next+=4;
+ n_left_to_next-=4;
+
+ dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb0, b0, &next0, &error0);
+ dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb1, b1, &next1, &error1);
+ dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb2, b2, &next2, &error2);
+ dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb3, b3, &next3, &error3);
- dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb, b0,
- &next0, &error0);
b0->error = node->errors[error0];
+ b1->error = node->errors[error1];
+ b2->error = node->errors[error2];
+ b3->error = node->errors[error3];
- l3_offset0 = ((next0 == VNET_DEVICE_INPUT_NEXT_IP4_INPUT ||
- next0 == VNET_DEVICE_INPUT_NEXT_IP6_INPUT ||
- next0 == VNET_DEVICE_INPUT_NEXT_MPLS_INPUT) ?
- sizeof (ethernet_header_t) : 0);
+ l3_offset0 = device_input_next_node_advance[next0];
+ l3_offset1 = device_input_next_node_advance[next1];
+ l3_offset2 = device_input_next_node_advance[next2];
+ l3_offset3 = device_input_next_node_advance[next3];
- b0->current_data = l3_offset0;
- /* Some drivers like fm10k receive frames with
- mb->data_off > RTE_PKTMBUF_HEADROOM */
- b0->current_data += mb->data_off - RTE_PKTMBUF_HEADROOM;
- b0->current_length = mb->data_len - l3_offset0;
+ b0->current_data = l3_offset0 + mb0->data_off - RTE_PKTMBUF_HEADROOM;
+ b1->current_data = l3_offset1 + mb1->data_off - RTE_PKTMBUF_HEADROOM;
+ b2->current_data = l3_offset2 + mb2->data_off - RTE_PKTMBUF_HEADROOM;
+ b3->current_data = l3_offset3 + mb3->data_off - RTE_PKTMBUF_HEADROOM;
- b0->flags = buffer_flags_template;
+ b0->current_length = mb0->data_len - l3_offset0;
+ b1->current_length = mb1->data_len - l3_offset1;
+ b2->current_length = mb2->data_len - l3_offset2;
+ b3->current_length = mb3->data_len - l3_offset3;
- if (VMWARE_LENGTH_BUG_WORKAROUND)
- b0->current_length -= 4;
+ b0->flags = buffer_flags_template;
+ b1->flags = buffer_flags_template;
+ b2->flags = buffer_flags_template;
+ b3->flags = buffer_flags_template;
vnet_buffer (b0)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
+ vnet_buffer (b1)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
+ vnet_buffer (b2)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
+ vnet_buffer (b3)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
+
vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
- n_rx_bytes += mb->pkt_len;
+ vnet_buffer (b1)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ vnet_buffer (b2)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ vnet_buffer (b3)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+
+ n_rx_bytes += mb0->pkt_len;
+ n_rx_bytes += mb1->pkt_len;
+ n_rx_bytes += mb2->pkt_len;
+ n_rx_bytes += mb3->pkt_len;
/* Process subsequent segments of multi-segment packets */
- while ((mb->nb_segs > 1) && (nb_seg < mb->nb_segs))
+ if (xd->flags & DPDK_DEVICE_FLAG_MAYBE_MULTISEG)
{
- ASSERT (mb_seg != 0);
+ dpdk_process_subseq_segs (vm, b0, mb0, fl);
+ dpdk_process_subseq_segs (vm, b1, mb1, fl);
+ dpdk_process_subseq_segs (vm, b2, mb2, fl);
+ dpdk_process_subseq_segs (vm, b3, mb3, fl);
+ }
+
+ /*
+ * Turn this on if you run into
+ * "bad monkey" contexts, and you want to know exactly
+ * which nodes they've visited... See main.c...
+ */
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b1);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b2);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b3);
- b_seg = vlib_buffer_from_rte_mbuf (mb_seg);
- vlib_buffer_init_for_free_list (b_seg, fl);
+ /* Do we have any driver RX features configured on the interface? */
+ vnet_feature_start_device_input_x4 (xd->vlib_sw_if_index,
+ &next0, &next1, &next2, &next3,
+ b0, b1, b2, b3,
+ l3_offset0, l3_offset1,
+ l3_offset2, l3_offset3);
- ASSERT ((b_seg->flags & VLIB_BUFFER_NEXT_PRESENT) == 0);
- ASSERT (b_seg->current_data == 0);
+ vlib_validate_buffer_enqueue_x4 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, bi2, bi3,
+ next0, next1, next2, next3);
+ n_buffers-=4;
+ mb_index+=4;
+ }
+ while (n_buffers > 0 && n_left_to_next > 0)
+ {
+ struct rte_mbuf *mb0 = xd->rx_vectors[queue_id][mb_index];
- /*
- * The driver (e.g. virtio) may not put the packet data at the start
- * of the segment, so don't assume b_seg->current_data == 0 is correct.
- */
- b_seg->current_data =
- (mb_seg->buf_addr + mb_seg->data_off) - (void *) b_seg->data;
+ ASSERT (mb0);
- b_seg->current_length = mb_seg->data_len;
- b0->total_length_not_including_first_buffer += mb_seg->data_len;
+ b0 = vlib_buffer_from_rte_mbuf (mb0);
- b_chain->flags |= VLIB_BUFFER_NEXT_PRESENT;
- b_chain->next_buffer = vlib_get_buffer_index (vm, b_seg);
+ /* Prefetch one next segment if it exists. */
+ if (PREDICT_FALSE (mb0->nb_segs > 1))
+ dpdk_prefetch_buffer (mb0->next);
- b_chain = b_seg;
- mb_seg = mb_seg->next;
- nb_seg++;
- }
+ vlib_buffer_init_for_free_list (b0, fl);
+
+ bi0 = vlib_get_buffer_index (vm, b0);
+
+ to_next[0] = bi0;
+ to_next++;
+ n_left_to_next--;
+
+ dpdk_rx_next_and_error_from_mb_flags_x1 (xd, mb0, b0,
+ &next0, &error0);
+ b0->error = node->errors[error0];
+
+ l3_offset0 = device_input_next_node_advance[next0];
+
+ b0->current_data = l3_offset0;
+ b0->current_data += mb0->data_off - RTE_PKTMBUF_HEADROOM;
+ b0->current_length = mb0->data_len - l3_offset0;
+
+ b0->flags = buffer_flags_template;
+
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = xd->vlib_sw_if_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
+ n_rx_bytes += mb0->pkt_len;
+
+ /* Process subsequent segments of multi-segment packets */
+ dpdk_process_subseq_segs (vm, b0, mb0, fl);
/*
* Turn this on if you run into
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
bi0, next0);
- if (PREDICT_FALSE (n_trace > mb_index))
- vec_add1 (xd->d_trace_buffers[cpu_index], bi0);
n_buffers--;
mb_index++;
}
Code Review / odp4vpp.git / commitdiff