*/
#include <vnet/vnet.h>
+#include <vnet/ip/icmp46_packet.h>
+#include <vnet/ip/ip4.h>
+#include <vnet/ip/ip6.h>
+#include <vnet/udp/udp_packet.h>
#include <vnet/feature/feature.h>
typedef struct
{
u32 sw_if_index;
- u8 data[128 - sizeof (u32)];
+ u32 flags;
+ u16 gso_size;
+ u8 gso_l4_hdr_sz;
+ u8 data[128 - 3 * sizeof (u32)];
}
interface_output_trace_t;
interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
vnet_main_t *vnm = vnet_get_main ();
vnet_sw_interface_t *si;
- uword indent;
+ u32 indent;
if (t->sw_if_index != (u32) ~ 0)
{
(vnm->interface_main.sw_interfaces, t->sw_if_index))
{
/* the interface may have been deleted by the time the trace is printed */
- s = format (s, "sw_if_index: %d\n%U%U",
- t->sw_if_index,
- format_white_space, indent,
- node->format_buffer ? node->
- format_buffer : format_hex_bytes, t->data,
- sizeof (t->data));
+ s = format (s, "sw_if_index: %d ", t->sw_if_index);
}
else
{
si = vnet_get_sw_interface (vnm, t->sw_if_index);
-
- s = format (s, "%U\n%U%U",
- format_vnet_sw_interface_name, vnm, si,
- format_white_space, indent,
- node->format_buffer ? node->
- format_buffer : format_hex_bytes, t->data,
- sizeof (t->data));
+ s =
+ format (s, "%U ", format_vnet_sw_interface_name, vnm, si,
+ t->flags);
+ }
+#define _(bit, name, v, x) \
+ if (v && (t->flags & VNET_BUFFER_F_##name)) \
+ s = format (s, "%s ", v);
+ foreach_vnet_buffer_flag
+#undef _
+ if (t->flags & VNET_BUFFER_F_GSO)
+ {
+ s = format (s, "\n%Ugso_sz %d gso_l4_hdr_sz %d",
+ format_white_space, indent + 2, t->gso_size,
+ t->gso_l4_hdr_sz);
}
+ s =
+ format (s, "\n%U%U", format_white_space, indent,
+ node->format_buffer ? node->format_buffer : format_hex_bytes,
+ t->data, sizeof (t->data));
}
return s;
}
u32 n_left, *from;
n_left = n_buffers;
- from = vlib_frame_args (frame);
+ from = vlib_frame_vector_args (frame);
while (n_left >= 4)
{
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- clib_memcpy (t0->data, vlib_buffer_get_current (b0),
- sizeof (t0->data));
+ t0->flags = b0->flags;
+ t0->gso_size = vnet_buffer2 (b0)->gso_size;
+ t0->gso_l4_hdr_sz = vnet_buffer2 (b0)->gso_l4_hdr_sz;
+ clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
+ sizeof (t0->data));
}
if (b1->flags & VLIB_BUFFER_IS_TRACED)
{
t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
- clib_memcpy (t1->data, vlib_buffer_get_current (b1),
- sizeof (t1->data));
+ t1->flags = b1->flags;
+ t1->gso_size = vnet_buffer2 (b1)->gso_size;
+ t1->gso_l4_hdr_sz = vnet_buffer2 (b1)->gso_l4_hdr_sz;
+ clib_memcpy_fast (t1->data, vlib_buffer_get_current (b1),
+ sizeof (t1->data));
}
from += 2;
n_left -= 2;
{
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- clib_memcpy (t0->data, vlib_buffer_get_current (b0),
- sizeof (t0->data));
+ t0->flags = b0->flags;
+ t0->gso_size = vnet_buffer2 (b0)->gso_size;
+ t0->gso_l4_hdr_sz = vnet_buffer2 (b0)->gso_l4_hdr_sz;
+ clib_memcpy_fast (t0->data, vlib_buffer_get_current (b0),
+ sizeof (t0->data));
}
from += 1;
n_left -= 1;
}
}
-static never_inline u32
-slow_path (vlib_main_t * vm,
- u32 bi,
- vlib_buffer_t * b,
- u32 n_left_to_tx, u32 * to_tx, u32 * n_slow_bytes_result)
+static_always_inline void
+calc_checksums (vlib_main_t * vm, vlib_buffer_t * b)
{
- /* We've already enqueued a single buffer. */
- u32 n_buffers = 0;
- u32 n_slow_bytes = 0;
+ ip4_header_t *ip4;
+ ip6_header_t *ip6;
+ tcp_header_t *th;
+ udp_header_t *uh;
- while (n_left_to_tx > 0)
- {
- to_tx[0] = bi;
- to_tx += 1;
- n_left_to_tx -= 1;
- n_buffers += 1;
- n_slow_bytes += vlib_buffer_length_in_chain (vm, b);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b->current_length > 0);
+ int is_ip4 = (b->flags & VNET_BUFFER_F_IS_IP4) != 0;
+ int is_ip6 = (b->flags & VNET_BUFFER_F_IS_IP6) != 0;
- if (!(b->flags & VLIB_BUFFER_NEXT_PRESENT))
- break;
+ ASSERT (!(is_ip4 && is_ip6));
- bi = b->next_buffer;
- b = vlib_get_buffer (vm, bi);
- }
-
- /* Ran out of space in next frame trying to enqueue buffers? */
- if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
- return 0;
-
- *n_slow_bytes_result = n_slow_bytes;
- return n_buffers;
-}
+ ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
+ ip6 = (ip6_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
+ th = (tcp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
+ uh = (udp_header_t *) (b->data + vnet_buffer (b)->l4_hdr_offset);
-/*
- * Increment TX stats. Roll up consecutive increments to the same sw_if_index
- * into one increment.
- */
-static_always_inline void
-incr_output_stats (vnet_main_t * vnm,
- u32 cpu_index,
- u32 length,
- u32 sw_if_index,
- u32 * last_sw_if_index, u32 * n_packets, u32 * n_bytes)
-{
- vnet_interface_main_t *im;
-
- if (PREDICT_TRUE (sw_if_index == *last_sw_if_index))
+ if (is_ip4)
{
- *n_packets += 1;
- *n_bytes += length;
+ ip4 = (ip4_header_t *) (b->data + vnet_buffer (b)->l3_hdr_offset);
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)
+ ip4->checksum = ip4_header_checksum (ip4);
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
+ {
+ th->checksum = 0;
+ th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
+ }
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4);
}
- else
+ if (is_ip6)
{
- if (PREDICT_TRUE (*last_sw_if_index != ~0))
+ int bogus;
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM)
{
- im = &vnm->interface_main;
-
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- cpu_index,
- *last_sw_if_index,
- *n_packets, *n_bytes);
+ th->checksum = 0;
+ th->checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
+ }
+ if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)
+ {
+ uh->checksum = 0;
+ uh->checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
}
- *last_sw_if_index = sw_if_index;
- *n_packets = 1;
- *n_bytes = length;
}
-}
+ b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM;
+ b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
+}
-/* Interface output functions. */
-uword
-vnet_interface_output_node_flatten (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+static_always_inline u16
+tso_alloc_tx_bufs (vlib_main_t * vm,
+ vnet_interface_per_thread_data_t * ptd,
+ vlib_buffer_t * b0, u16 l4_hdr_sz)
{
- vnet_main_t *vnm = vnet_get_main ();
- vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
- vnet_sw_interface_t *si;
- vnet_hw_interface_t *hi;
- u32 n_left_to_tx, *from, *from_end, *to_tx;
- u32 n_bytes, n_buffers, n_packets;
- u32 last_sw_if_index;
- u32 cpu_index = vm->cpu_index;
+ u32 n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
+ u16 gso_size = vnet_buffer2 (b0)->gso_size;
+ u16 l234_sz = vnet_buffer (b0)->l4_hdr_offset + l4_hdr_sz;
+ /* rounded-up division */
+ u16 n_bufs = (n_bytes_b0 - l234_sz + (gso_size - 1)) / gso_size;
+ u16 n_alloc;
+
+ ASSERT (n_bufs > 0);
+ vec_validate (ptd->split_buffers, n_bufs - 1);
+
+ n_alloc = vlib_buffer_alloc (vm, ptd->split_buffers, n_bufs);
+ if (n_alloc < n_bufs)
+ {
+ vlib_buffer_free (vm, ptd->split_buffers, n_alloc);
+ return 0;
+ }
+ return 1;
+}
- n_buffers = frame->n_vectors;
+static_always_inline void
+tso_init_buf_from_template_base (vlib_buffer_t * nb0, vlib_buffer_t * b0,
+ u32 flags, u16 length)
+{
+ nb0->current_data = 0;
+ nb0->total_length_not_including_first_buffer = 0;
+ nb0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID | flags;
+ clib_memcpy_fast (&nb0->opaque, &b0->opaque, sizeof (nb0->opaque));
+ clib_memcpy_fast (nb0->data, b0->data, length);
+ nb0->current_length = length;
+}
- if (node->flags & VLIB_NODE_FLAG_TRACE)
- vnet_interface_output_trace (vm, node, frame, n_buffers);
+static_always_inline void
+tso_init_buf_from_template (vlib_main_t * vm, vlib_buffer_t * nb0,
+ vlib_buffer_t * b0, u16 template_data_sz,
+ u16 gso_size, u8 ** p_dst_ptr, u16 * p_dst_left,
+ u32 next_tcp_seq, u32 flags)
+{
+ tso_init_buf_from_template_base (nb0, b0, flags, template_data_sz);
- from = vlib_frame_args (frame);
+ *p_dst_left =
+ clib_min (gso_size,
+ vlib_buffer_get_default_data_size (vm) - template_data_sz);
+ *p_dst_ptr = nb0->data + template_data_sz;
- if (rt->is_deleted)
- return vlib_error_drop_buffers (vm, node, from,
- /* buffer stride */ 1,
- n_buffers,
- VNET_INTERFACE_OUTPUT_NEXT_DROP,
- node->node_index,
- VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
+ tcp_header_t *tcp =
+ (tcp_header_t *) (nb0->data + vnet_buffer (nb0)->l4_hdr_offset);
+ tcp->seq_number = clib_host_to_net_u32 (next_tcp_seq);
+}
- si = vnet_get_sw_interface (vnm, rt->sw_if_index);
- hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
- if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
- !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
- {
- vlib_simple_counter_main_t *cm;
+static_always_inline void
+tso_fixup_segmented_buf (vlib_buffer_t * b0, u8 tcp_flags, int is_ip6)
+{
+ u16 l3_hdr_offset = vnet_buffer (b0)->l3_hdr_offset;
+ u16 l4_hdr_offset = vnet_buffer (b0)->l4_hdr_offset;
+ ip4_header_t *ip4 = (ip4_header_t *) (b0->data + l3_hdr_offset);
+ ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l3_hdr_offset);
+ tcp_header_t *tcp = (tcp_header_t *) (b0->data + l4_hdr_offset);
+
+ tcp->flags = tcp_flags;
+
+ if (is_ip6)
+ ip6->payload_length =
+ clib_host_to_net_u16 (b0->current_length -
+ vnet_buffer (b0)->l4_hdr_offset);
+ else
+ ip4->length =
+ clib_host_to_net_u16 (b0->current_length -
+ vnet_buffer (b0)->l3_hdr_offset);
+}
- cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
- VNET_INTERFACE_COUNTER_TX_ERROR);
- vlib_increment_simple_counter (cm, cpu_index,
- rt->sw_if_index, n_buffers);
- return vlib_error_drop_buffers (vm, node, from,
- /* buffer stride */ 1,
- n_buffers,
- VNET_INTERFACE_OUTPUT_NEXT_DROP,
- node->node_index,
- VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
- }
+/**
+ * Allocate the necessary number of ptd->split_buffers,
+ * and segment the possibly chained buffer(s) from b0 into
+ * there.
+ *
+ * Return the cumulative number of bytes sent or zero
+ * if allocation failed.
+ */
- from_end = from + n_buffers;
+static_always_inline u32
+tso_segment_buffer (vlib_main_t * vm, vnet_interface_per_thread_data_t * ptd,
+ int do_tx_offloads, u32 sbi0, vlib_buffer_t * sb0,
+ u32 n_bytes_b0)
+{
+ u32 n_tx_bytes = 0;
+ int is_ip4 = sb0->flags & VNET_BUFFER_F_IS_IP4;
+ int is_ip6 = sb0->flags & VNET_BUFFER_F_IS_IP6;
+ ASSERT (is_ip4 || is_ip6);
+ ASSERT (sb0->flags & VNET_BUFFER_F_L2_HDR_OFFSET_VALID);
+ ASSERT (sb0->flags & VNET_BUFFER_F_L3_HDR_OFFSET_VALID);
+ ASSERT (sb0->flags & VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
+ u16 gso_size = vnet_buffer2 (sb0)->gso_size;
+
+ int l4_hdr_sz = vnet_buffer2 (sb0)->gso_l4_hdr_sz;
+ u8 save_tcp_flags = 0;
+ u8 tcp_flags_no_fin_psh = 0;
+ u32 next_tcp_seq = 0;
+
+ tcp_header_t *tcp =
+ (tcp_header_t *) (sb0->data + vnet_buffer (sb0)->l4_hdr_offset);
+ next_tcp_seq = clib_net_to_host_u32 (tcp->seq_number);
+ /* store original flags for last packet and reset FIN and PSH */
+ save_tcp_flags = tcp->flags;
+ tcp_flags_no_fin_psh = tcp->flags & ~(TCP_FLAG_FIN | TCP_FLAG_PSH);
+ tcp->checksum = 0;
+
+ u32 default_bflags =
+ sb0->flags & ~(VNET_BUFFER_F_GSO | VLIB_BUFFER_NEXT_PRESENT);
+ u16 l234_sz = vnet_buffer (sb0)->l4_hdr_offset + l4_hdr_sz;
+ int first_data_size = clib_min (gso_size, sb0->current_length - l234_sz);
+ next_tcp_seq += first_data_size;
+
+ if (PREDICT_FALSE (!tso_alloc_tx_bufs (vm, ptd, sb0, l4_hdr_sz)))
+ return 0;
- /* Total byte count of all buffers. */
- n_bytes = 0;
- n_packets = 0;
- last_sw_if_index = ~0;
+ vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[0]);
+ tso_init_buf_from_template_base (b0, sb0, default_bflags,
+ l4_hdr_sz + first_data_size);
- while (from < from_end)
+ u32 total_src_left = n_bytes_b0 - l234_sz - first_data_size;
+ if (total_src_left)
{
- /* Get new next frame since previous incomplete frame may have less
- than VNET_FRAME_SIZE vectors in it. */
- vlib_get_new_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
- to_tx, n_left_to_tx);
-
- while (from + 4 <= from_end && n_left_to_tx >= 2)
+ /* Need to copy more segments */
+ u8 *src_ptr, *dst_ptr;
+ u16 src_left, dst_left;
+ /* current source buffer */
+ vlib_buffer_t *csb0 = sb0;
+ u32 csbi0 = sbi0;
+ /* current dest buffer */
+ vlib_buffer_t *cdb0;
+ u16 dbi = 1; /* the buffer [0] is b0 */
+
+ src_ptr = sb0->data + l234_sz + first_data_size;
+ src_left = sb0->current_length - l234_sz - first_data_size;
+ b0->current_length = l234_sz + first_data_size;
+
+ tso_fixup_segmented_buf (b0, tcp_flags_no_fin_psh, is_ip6);
+ if (do_tx_offloads)
+ calc_checksums (vm, b0);
+
+ /* grab a second buffer and prepare the loop */
+ ASSERT (dbi < vec_len (ptd->split_buffers));
+ cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]);
+ tso_init_buf_from_template (vm, cdb0, b0, l234_sz, gso_size, &dst_ptr,
+ &dst_left, next_tcp_seq, default_bflags);
+
+ /* an arbitrary large number to catch the runaway loops */
+ int nloops = 2000;
+ while (total_src_left)
{
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
-
- /* Prefetch next iteration. */
- vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
- vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
+ ASSERT (nloops-- > 0);
+ u16 bytes_to_copy = clib_min (src_left, dst_left);
- bi0 = from[0];
- bi1 = from[1];
- to_tx[0] = bi0;
- to_tx[1] = bi1;
- from += 2;
- to_tx += 2;
- n_left_to_tx -= 2;
+ clib_memcpy_fast (dst_ptr, src_ptr, bytes_to_copy);
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
+ src_left -= bytes_to_copy;
+ src_ptr += bytes_to_copy;
+ total_src_left -= bytes_to_copy;
+ dst_left -= bytes_to_copy;
+ dst_ptr += bytes_to_copy;
+ next_tcp_seq += bytes_to_copy;
+ cdb0->current_length += bytes_to_copy;
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b0->current_length > 0);
- ASSERT (b1->current_length > 0);
-
- if (PREDICT_FALSE
- ((b0->flags | b1->flags) & VLIB_BUFFER_NEXT_PRESENT))
+ if (0 == src_left)
{
- u32 n_buffers, n_slow_bytes, i;
-
- /* Undo. */
- from -= 2;
- to_tx -= 2;
- n_left_to_tx += 2;
+ int has_next = (csb0->flags & VLIB_BUFFER_NEXT_PRESENT);
+ u32 next_bi = csb0->next_buffer;
- /* Do slow path two times. */
- for (i = 0; i < 2; i++)
+ /* init src to the next buffer in chain */
+ if (has_next)
+ {
+ csbi0 = next_bi;
+ csb0 = vlib_get_buffer (vm, csbi0);
+ src_left = csb0->current_length;
+ src_ptr = csb0->data;
+ }
+ else
{
- u32 bi = i ? bi1 : bi0;
- vlib_buffer_t *b = i ? b1 : b0;
-
- n_buffers = slow_path (vm, bi, b,
- n_left_to_tx, to_tx, &n_slow_bytes);
-
- /* Not enough room for single packet? */
- if (n_buffers == 0)
- goto put;
-
- from += 1;
- to_tx += n_buffers;
- n_left_to_tx -= n_buffers;
- incr_output_stats (vnm, cpu_index, n_slow_bytes,
- vnet_buffer (b)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
+ ASSERT (total_src_left == 0);
+ break;
}
}
- else
+ if (0 == dst_left && total_src_left)
{
- incr_output_stats (vnm, cpu_index,
- vlib_buffer_length_in_chain (vm, b0),
- vnet_buffer (b0)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
- incr_output_stats (vnm, cpu_index,
- vlib_buffer_length_in_chain (vm, b0),
- vnet_buffer (b1)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
+ if (do_tx_offloads)
+ calc_checksums (vm, cdb0);
+ n_tx_bytes += cdb0->current_length;
+ ASSERT (dbi < vec_len (ptd->split_buffers));
+ cdb0 = vlib_get_buffer (vm, ptd->split_buffers[dbi++]);
+ tso_init_buf_from_template (vm, cdb0, b0, l234_sz,
+ gso_size, &dst_ptr, &dst_left,
+ next_tcp_seq, default_bflags);
}
}
- while (from + 1 <= from_end && n_left_to_tx >= 1)
- {
- u32 bi0;
- vlib_buffer_t *b0;
-
- bi0 = from[0];
- to_tx[0] = bi0;
- from += 1;
- to_tx += 1;
- n_left_to_tx -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b0->current_length > 0);
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_NEXT_PRESENT))
- {
- u32 n_buffers, n_slow_bytes;
-
- /* Undo. */
- from -= 1;
- to_tx -= 1;
- n_left_to_tx += 1;
-
- n_buffers = slow_path (vm, bi0, b0,
- n_left_to_tx, to_tx, &n_slow_bytes);
+ tso_fixup_segmented_buf (cdb0, save_tcp_flags, is_ip6);
+ if (do_tx_offloads)
+ calc_checksums (vm, cdb0);
- /* Not enough room for single packet? */
- if (n_buffers == 0)
- goto put;
-
- from += 1;
- to_tx += n_buffers;
- n_left_to_tx -= n_buffers;
- }
- incr_output_stats (vnm, cpu_index,
- vlib_buffer_length_in_chain (vm, b0),
- vnet_buffer (b0)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
- }
-
- put:
- vlib_put_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
- n_left_to_tx);
+ n_tx_bytes += cdb0->current_length;
}
+ n_tx_bytes += b0->current_length;
+ return n_tx_bytes;
+}
- /* Final update of interface stats. */
- incr_output_stats (vnm, cpu_index, 0, ~0, /* ~0 will flush stats */
- &last_sw_if_index, &n_packets, &n_bytes);
+static_always_inline void
+drop_one_buffer_and_count (vlib_main_t * vm, vnet_main_t * vnm,
+ vlib_node_runtime_t * node, u32 * pbi0,
+ u32 drop_error_code)
+{
+ u32 thread_index = vm->thread_index;
+ vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
- return n_buffers;
+ vlib_simple_counter_main_t *cm;
+ cm =
+ vec_elt_at_index (vnm->interface_main.sw_if_counters,
+ VNET_INTERFACE_COUNTER_TX_ERROR);
+ vlib_increment_simple_counter (cm, thread_index, rt->sw_if_index, 1);
+
+ vlib_error_drop_buffers (vm, node, pbi0,
+ /* buffer stride */ 1,
+ /* n_buffers */ 1,
+ VNET_INTERFACE_OUTPUT_NEXT_DROP,
+ node->node_index, drop_error_code);
}
-VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node_flatten);
-CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node_flatten);
-
-uword
-vnet_interface_output_node (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+static_always_inline uword
+vnet_interface_output_node_inline_gso (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame,
+ vnet_main_t * vnm,
+ vnet_hw_interface_t * hi,
+ int do_tx_offloads,
+ int do_segmentation)
{
- vnet_main_t *vnm = vnet_get_main ();
vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
vnet_sw_interface_t *si;
- vnet_hw_interface_t *hi;
u32 n_left_to_tx, *from, *from_end, *to_tx;
u32 n_bytes, n_buffers, n_packets;
u32 n_bytes_b0, n_bytes_b1, n_bytes_b2, n_bytes_b3;
- u32 cpu_index = vm->cpu_index;
+ u32 thread_index = vm->thread_index;
vnet_interface_main_t *im = &vnm->interface_main;
u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
u32 current_config_index = ~0;
u8 arc = im->output_feature_arc_index;
+ vnet_interface_per_thread_data_t *ptd =
+ vec_elt_at_index (im->per_thread_data, thread_index);
n_buffers = frame->n_vectors;
if (node->flags & VLIB_NODE_FLAG_TRACE)
vnet_interface_output_trace (vm, node, frame, n_buffers);
- from = vlib_frame_args (frame);
+ from = vlib_frame_vector_args (frame);
if (rt->is_deleted)
return vlib_error_drop_buffers (vm, node, from,
si = vnet_get_sw_interface (vnm, rt->sw_if_index);
hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
- if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
+ if (!(si->flags & (VNET_SW_INTERFACE_FLAG_ADMIN_UP |
+ VNET_SW_INTERFACE_FLAG_BOND_SLAVE)) ||
!(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
{
vlib_simple_counter_main_t *cm;
cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
VNET_INTERFACE_COUNTER_TX_ERROR);
- vlib_increment_simple_counter (cm, cpu_index,
+ vlib_increment_simple_counter (cm, thread_index,
rt->sw_if_index, n_buffers);
return vlib_error_drop_buffers (vm, node, from,
u32 bi0, bi1, bi2, bi3;
vlib_buffer_t *b0, *b1, *b2, *b3;
u32 tx_swif0, tx_swif1, tx_swif2, tx_swif3;
+ u32 or_flags;
/* Prefetch next iteration. */
vlib_prefetch_buffer_with_index (vm, from[4], LOAD);
to_tx[1] = bi1;
to_tx[2] = bi2;
to_tx[3] = bi3;
- from += 4;
- to_tx += 4;
- n_left_to_tx -= 4;
+ if (!do_segmentation)
+ {
+ from += 4;
+ to_tx += 4;
+ n_left_to_tx -= 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);
+ if (do_segmentation)
+ {
+ or_flags = b0->flags | b1->flags | b2->flags | b3->flags;
+
+ /* go to single loop if we need TSO segmentation */
+ if (PREDICT_FALSE (or_flags & VNET_BUFFER_F_GSO))
+ break;
+ from += 4;
+ to_tx += 4;
+ n_left_to_tx -= 4;
+ }
+
/* Be grumpy about zero length buffers for benefit of
driver tx function. */
ASSERT (b0->current_length > 0);
if (PREDICT_FALSE (current_config_index != ~0))
{
- b0->feature_arc_index = arc;
- b1->feature_arc_index = arc;
- b2->feature_arc_index = arc;
- b3->feature_arc_index = arc;
+ vnet_buffer (b0)->feature_arc_index = arc;
+ vnet_buffer (b1)->feature_arc_index = arc;
+ vnet_buffer (b2)->feature_arc_index = arc;
+ vnet_buffer (b3)->feature_arc_index = arc;
b0->current_config_index = current_config_index;
b1->current_config_index = current_config_index;
b2->current_config_index = current_config_index;
{
vlib_increment_combined_counter (im->combined_sw_if_counters +
VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif0, 1,
+ thread_index, tx_swif0, 1,
n_bytes_b0);
}
vlib_increment_combined_counter (im->combined_sw_if_counters +
VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif1, 1,
+ thread_index, tx_swif1, 1,
n_bytes_b1);
}
vlib_increment_combined_counter (im->combined_sw_if_counters +
VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif2, 1,
+ thread_index, tx_swif2, 1,
n_bytes_b2);
}
if (PREDICT_FALSE (tx_swif3 != rt->sw_if_index))
vlib_increment_combined_counter (im->combined_sw_if_counters +
VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif3, 1,
+ thread_index, tx_swif3, 1,
n_bytes_b3);
}
+
+ if (!do_segmentation)
+ or_flags = b0->flags | b1->flags | b2->flags | b3->flags;
+
+ if (do_tx_offloads)
+ {
+ if (or_flags &
+ (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
+ {
+ calc_checksums (vm, b0);
+ calc_checksums (vm, b1);
+ calc_checksums (vm, b2);
+ calc_checksums (vm, b3);
+ }
+ }
}
while (from + 1 <= from_end && n_left_to_tx >= 1)
if (PREDICT_FALSE (current_config_index != ~0))
{
- b0->feature_arc_index = arc;
+ vnet_buffer (b0)->feature_arc_index = arc;
b0->current_config_index = current_config_index;
}
+ if (do_segmentation)
+ {
+ if (PREDICT_FALSE (b0->flags & VNET_BUFFER_F_GSO))
+ {
+ /*
+ * Undo the enqueue of the b0 - it is not going anywhere,
+ * and will be freed either after it's segmented or
+ * when dropped, if there is no buffers to segment into.
+ */
+ to_tx -= 1;
+ n_left_to_tx += 1;
+ /* undo the counting. */
+ n_bytes -= n_bytes_b0;
+ n_packets -= 1;
+
+ u32 n_tx_bytes = 0;
+
+ n_tx_bytes =
+ tso_segment_buffer (vm, ptd, do_tx_offloads, bi0, b0,
+ n_bytes_b0);
+
+ if (PREDICT_FALSE (n_tx_bytes == 0))
+ {
+ drop_one_buffer_and_count (vm, vnm, node, from - 1,
+ VNET_INTERFACE_OUTPUT_ERROR_NO_BUFFERS_FOR_GSO);
+ continue;
+ }
+
+ u16 n_tx_bufs = vec_len (ptd->split_buffers);
+ u32 *from_tx_seg = ptd->split_buffers;
+
+ while (n_tx_bufs > 0)
+ {
+ if (n_tx_bufs >= n_left_to_tx)
+ {
+ while (n_left_to_tx > 0)
+ {
+ to_tx[0] = from_tx_seg[0];
+ to_tx += 1;
+ from_tx_seg += 1;
+ n_left_to_tx -= 1;
+ n_tx_bufs -= 1;
+ n_packets += 1;
+ }
+ vlib_put_next_frame (vm, node, next_index,
+ n_left_to_tx);
+ vlib_get_new_next_frame (vm, node, next_index,
+ to_tx, n_left_to_tx);
+ }
+ else
+ {
+ while (n_tx_bufs > 0)
+ {
+ to_tx[0] = from_tx_seg[0];
+ to_tx += 1;
+ from_tx_seg += 1;
+ n_left_to_tx -= 1;
+ n_tx_bufs -= 1;
+ n_packets += 1;
+ }
+ }
+ }
+ n_bytes += n_tx_bytes;
+ if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
+ {
+
+ vlib_increment_combined_counter
+ (im->combined_sw_if_counters +
+ VNET_INTERFACE_COUNTER_TX, thread_index, tx_swif0,
+ _vec_len (ptd->split_buffers), n_tx_bytes);
+ }
+ /* The buffers were enqueued. Reset the length */
+ _vec_len (ptd->split_buffers) = 0;
+ /* Free the now segmented buffer */
+ vlib_buffer_free_one (vm, bi0);
+ continue;
+ }
+ }
+
if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
{
vlib_increment_combined_counter (im->combined_sw_if_counters +
VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif0, 1,
+ thread_index, tx_swif0, 1,
n_bytes_b0);
}
+
+ if (do_tx_offloads)
+ calc_checksums (vm, b0);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
/* Update main interface stats. */
vlib_increment_combined_counter (im->combined_sw_if_counters
+ VNET_INTERFACE_COUNTER_TX,
- cpu_index,
+ thread_index,
rt->sw_if_index, n_packets, n_bytes);
return n_buffers;
}
-VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node);
-CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node);
+static_always_inline uword
+vnet_interface_output_node_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, vnet_main_t * vnm,
+ vnet_hw_interface_t * hi,
+ int do_tx_offloads)
+{
+ /*
+ * The 3-headed "if" is here because we want to err on the side
+ * of not impacting the non-GSO performance - so for the more
+ * common case of no GSO interfaces we want to prevent the
+ * segmentation codepath from being there altogether.
+ */
+ if (PREDICT_TRUE (vnm->interface_main.gso_interface_count == 0))
+ return vnet_interface_output_node_inline_gso (vm, node, frame, vnm, hi,
+ do_tx_offloads,
+ /* do_segmentation */ 0);
+ else if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO)
+ return vnet_interface_output_node_inline_gso (vm, node, frame, vnm, hi,
+ do_tx_offloads,
+ /* do_segmentation */ 0);
+ else
+ return vnet_interface_output_node_inline_gso (vm, node, frame, vnm, hi,
+ do_tx_offloads,
+ /* do_segmentation */ 1);
+}
+
+uword
+vnet_interface_output_node (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_hw_interface_t *hi;
+ vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
+ hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
+
+ if (hi->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
+ return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
+ /* do_tx_offloads */ 0);
+ else
+ return vnet_interface_output_node_inline (vm, node, frame, vnm, hi,
+ /* do_tx_offloads */ 1);
+}
/* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
static uword
n_left_from = frame->n_vectors;
- from = vlib_frame_args (frame);
+ from = vlib_frame_vector_args (frame);
next_index = node->cached_next_index;
while (n_left_from > 0)
vnet_buffer (b1)->sw_if_index
[VLIB_TX]);
- next0 = hi0->hw_if_index;
- next1 = hi1->hw_if_index;
+ next0 = hi0->output_node_next_index;
+ next1 = hi1->output_node_next_index;
vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
n_left_to_next, bi0, bi1, next0,
vnet_buffer (b0)->sw_if_index
[VLIB_TX]);
- next0 = hi0->hw_if_index;
+ next0 = hi0->output_node_next_index;
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, bi0, next0);
validate_error_frame (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * f)
{
- u32 *buffers = vlib_frame_args (f);
+ u32 *buffers = vlib_frame_vector_args (f);
vlib_buffer_t *b;
u8 *msg = 0;
uword i;
u32 current_sw_if_index, n_errors_current_sw_if_index;
u64 current_counter;
vlib_simple_counter_main_t *cm;
- u32 cpu_index = vm->cpu_index;
+ u32 thread_index = vm->thread_index;
static vlib_error_t memory[VNET_ERROR_N_DISPOSITION];
static char memory_init[VNET_ERROR_N_DISPOSITION];
- buffers = vlib_frame_args (frame);
+ buffers = vlib_frame_vector_args (frame);
first_buffer = buffers;
{
current_counter -= 2;
n_errors_current_sw_if_index -= 2;
- vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
- vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1);
+ vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
+ vlib_increment_simple_counter (cm, thread_index, sw_if_index1, 1);
/* Increment super-interface drop/punt counters for
sub-interfaces. */
sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
vlib_increment_simple_counter
- (cm, cpu_index, sw_if0->sup_sw_if_index,
+ (cm, thread_index, sw_if0->sup_sw_if_index,
sw_if0->sup_sw_if_index != sw_if_index0);
sw_if1 = vnet_get_sw_interface (vnm, sw_if_index1);
vlib_increment_simple_counter
- (cm, cpu_index, sw_if1->sup_sw_if_index,
+ (cm, thread_index, sw_if1->sup_sw_if_index,
sw_if1->sup_sw_if_index != sw_if_index1);
em->counters[current_counter_index] = current_counter;
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
/* Increment drop/punt counters. */
- vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
+ vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1);
/* Increment super-interface drop/punt counters for sub-interfaces. */
sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
- vlib_increment_simple_counter (cm, cpu_index, sw_if0->sup_sw_if_index,
+ vlib_increment_simple_counter (cm, thread_index,
+ sw_if0->sup_sw_if_index,
sw_if0->sup_sw_if_index != sw_if_index0);
if (PREDICT_FALSE (e0 != current_error))
{
vnet_sw_interface_t *si;
- vlib_increment_simple_counter (cm, cpu_index, current_sw_if_index,
+ vlib_increment_simple_counter (cm, thread_index, current_sw_if_index,
n_errors_current_sw_if_index);
si = vnet_get_sw_interface (vnm, current_sw_if_index);
if (si->sup_sw_if_index != current_sw_if_index)
- vlib_increment_simple_counter (cm, cpu_index, si->sup_sw_if_index,
+ vlib_increment_simple_counter (cm, thread_index, si->sup_sw_if_index,
n_errors_current_sw_if_index);
}
};
/* *INDENT-ON* */
+/* Convenience node to drop a vector of buffers with a "misc error". */
+static uword
+misc_drop_buffers (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return vlib_error_drop_buffers (vm, node, vlib_frame_vector_args (frame),
+ /* buffer stride */ 1,
+ frame->n_vectors,
+ /* next */ 0,
+ node->node_index,
+ /* error */ 0);
+}
+
+static char *misc_drop_buffers_error_strings[] = {
+ [0] = "misc. errors",
+};
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (misc_drop_buffers_node,static) = {
+ .function = misc_drop_buffers,
+ .name = "misc-drop-buffers",
+ .vector_size = sizeof (u32),
+ .n_errors = 1,
+ .n_next_nodes = 1,
+ .next_nodes = {
+ "error-drop",
+ },
+ .error_strings = misc_drop_buffers_error_strings,
+};
+/* *INDENT-ON* */
+
VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node,
vnet_per_buffer_interface_output);
{
.arc_name = "interface-output",
.start_nodes = VNET_FEATURES (0),
+ .last_in_arc = "interface-tx",
.arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
};
.runs_before = VNET_FEATURES ("interface-tx"),
};
+VNET_FEATURE_INIT (ipsec_if_tx, static) = {
+ .arc_name = "interface-output",
+ .node_name = "ipsec-if-output",
+ .runs_before = VNET_FEATURES ("interface-tx"),
+};
+
VNET_FEATURE_INIT (interface_tx, static) = {
.arc_name = "interface-output",
.node_name = "interface-tx",
vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
u32 next_index;
- next_index = vlib_node_add_next_with_slot
- (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
- hi->output_node_index,
- /* next_index */ hw_if_index);
+ if (hi->output_node_index == 0)
+ return 0;
- ASSERT (next_index == hw_if_index);
+ next_index = vlib_node_add_next
+ (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
+ hi->output_node_index);
+ hi->output_node_next_index = next_index;
return 0;
}
VNET_HW_INTERFACE_ADD_DEL_FUNCTION
(vnet_per_buffer_interface_output_hw_interface_add_del);
+void
+vnet_set_interface_output_node (vnet_main_t * vnm,
+ u32 hw_if_index, u32 node_index)
+{
+ ASSERT (node_index);
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
+ u32 next_index = vlib_node_add_next
+ (vnm->vlib_main, vnet_per_buffer_interface_output_node.index, node_index);
+ hi->output_node_next_index = next_index;
+ hi->output_node_index = node_index;
+}
+
static clib_error_t *
pcap_drop_trace_command_fn (vlib_main_t * vm,
unformat_input_t * input,
if (im->pcap_filename == 0)
im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
- memset (&im->pcap_main, 0, sizeof (im->pcap_main));
+ clib_memset (&im->pcap_main, 0, sizeof (im->pcap_main));
im->pcap_main.file_name = (char *) im->pcap_filename;
im->pcap_main.n_packets_to_capture = 100;
if (im->pcap_pkts_to_capture)
if (im->pcap_filename)
vec_free (im->pcap_filename);
- vec_add1 (filename, 0);
im->pcap_filename = chroot_filename;
+ im->pcap_main.file_name = (char *) im->pcap_filename;
matched = 1;
}
else if (unformat (input, "status"))
Code Review / vpp.git / blobdiff