{
u32 sw_if_index;
u32 flags;
- u16 gso_size;
- u8 gso_l4_hdr_sz;
- u8 data[128 - 3 * sizeof (u32)];
+ u8 data[128 - 2 * sizeof (u32)];
}
interface_output_trace_t;
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,
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
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));
}
t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
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));
}
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
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));
}
b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM;
}
-static_always_inline u16
-tso_alloc_tx_bufs (vlib_main_t * vm,
- vnet_interface_per_thread_data_t * ptd,
- vlib_buffer_t * b0, u32 n_bytes_b0, u16 l234_sz,
- u16 gso_size)
-{
- u16 size =
- clib_min (gso_size, vlib_buffer_get_default_data_size (vm) - l234_sz);
-
- /* rounded-up division */
- u16 n_bufs = (n_bytes_b0 - l234_sz + (size - 1)) / 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 n_alloc;
-}
-
-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 = b0->current_data;
- 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 (vlib_buffer_get_current (nb0),
- vlib_buffer_get_current (b0), length);
- nb0->current_length = length;
-}
-
-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);
-
- *p_dst_left =
- clib_min (gso_size,
- vlib_buffer_get_default_data_size (vm) - (template_data_sz +
- nb0->current_data));
- *p_dst_ptr = vlib_buffer_get_current (nb0) + template_data_sz;
-
- 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);
-}
-
-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 -
- (l4_hdr_offset - b0->current_data));
- else
- ip4->length =
- clib_host_to_net_u16 (b0->current_length -
- (l3_hdr_offset - b0->current_data));
-}
-
-/**
- * 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.
- */
-
-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
- - sb0->current_data;
- 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, n_bytes_b0, l234_sz, gso_size)))
- return 0;
-
- vlib_buffer_t *b0 = vlib_get_buffer (vm, ptd->split_buffers[0]);
- tso_init_buf_from_template_base (b0, sb0, default_bflags,
- l234_sz + first_data_size);
-
- u32 total_src_left = n_bytes_b0 - l234_sz - first_data_size;
- if (total_src_left)
- {
- /* 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 = vlib_buffer_get_current (sb0) + l234_sz + first_data_size;
- src_left = sb0->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)
- {
- if (nloops-- <= 0)
- clib_panic ("infinite loop detected");
- u16 bytes_to_copy = clib_min (src_left, dst_left);
-
- clib_memcpy_fast (dst_ptr, src_ptr, bytes_to_copy);
-
- 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;
-
- if (0 == src_left)
- {
- int has_next = (csb0->flags & VLIB_BUFFER_NEXT_PRESENT);
- u32 next_bi = csb0->next_buffer;
-
- /* 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 = vlib_buffer_get_current (csb0);
- }
- else
- {
- ASSERT (total_src_left == 0);
- break;
- }
- }
- if (0 == dst_left && total_src_left)
- {
- 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);
- }
- }
-
- tso_fixup_segmented_buf (cdb0, save_tcp_flags, is_ip6);
- if (do_tx_offloads)
- calc_checksums (vm, cdb0);
-
- n_tx_bytes += cdb0->current_length;
- }
- n_tx_bytes += b0->current_length;
- return n_tx_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;
-
- 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);
-}
-
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_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)
{
vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
vnet_sw_interface_t *si;
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);
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
n_buffers = frame->n_vectors;
or_flags = b[0]->flags | b[1]->flags | b[2]->flags | b[3]->flags;
- if (do_segmentation)
- {
- /* 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;
b[0]->current_config_index = current_config_index;
}
- if (do_segmentation)
- {
- if (PREDICT_FALSE (b[0]->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, b[0],
- 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);
- b += 1;
- 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);
- }
- 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);
- b += 1;
- continue;
- }
- }
-
if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
{
}
if (do_tx_offloads)
- calc_checksums (vm, b[0]);
-
+ {
+ if (b[0]->flags &
+ (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
+ VNET_BUFFER_F_OFFLOAD_IP_CKSUM))
+ calc_checksums (vm, b[0]);
+ }
b += 1;
}
{
u32 n_left_from, *from;
u32 sw_if_index;
+ vnet_pcap_t *pp = &vlib_global_main.pcap;
- if (PREDICT_TRUE (vlib_global_main.pcap[VLIB_TX].pcap_enable == 0))
+ if (PREDICT_TRUE (pp->pcap_tx_enable == 0))
return;
if (sw_if_index_from_buffer == 0)
else
sw_if_index = ~0;
- vnet_main_t *vnm = vnet_get_main ();
n_left_from = frame->n_vectors;
from = vlib_frame_vector_args (frame);
from++;
n_left_from--;
- if (vec_len (vnm->classify_filter_table_indices))
+ if (pp->filter_classify_table_index != ~0)
{
classify_filter_result =
vnet_is_packet_traced_inline
- (b0, vnm->classify_filter_table_indices[0],
- 0 /* full classify */ );
+ (b0, pp->filter_classify_table_index, 0 /* full classify */ );
if (classify_filter_result)
- pcap_add_buffer (&vlib_global_main.pcap[VLIB_TX].pcap_main, vm,
- bi0, 512);
+ pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
continue;
}
if (sw_if_index_from_buffer)
sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- if (vlib_global_main.pcap[VLIB_TX].pcap_sw_if_index == 0 ||
- vlib_global_main.pcap[VLIB_TX].pcap_sw_if_index == sw_if_index)
- pcap_add_buffer (&vlib_global_main.pcap[VLIB_TX].pcap_main, vm, bi0,
- 512);
+ if (pp->pcap_sw_if_index == 0 || pp->pcap_sw_if_index == sw_if_index)
+ pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
}
}
#ifndef CLIB_MARCH_VARIANT
-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,
static inline void
pcap_drop_trace (vlib_main_t * vm,
- vnet_interface_main_t * im, vlib_frame_t * f)
+ vnet_interface_main_t * im,
+ vnet_pcap_t * pp, vlib_frame_t * f)
{
u32 *from;
u32 n_left = f->n_vectors;
u32 bi0;
i16 save_current_data;
u16 save_current_length;
+ vlib_error_main_t *em = &vm->error_main;
+ int do_trace = 0;
+
from = vlib_frame_vector_args (f);
&& hash_get (im->pcap_drop_filter_hash, b0->error))
continue;
+ do_trace = (pp->pcap_sw_if_index == 0) ||
+ pp->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+ if (PREDICT_FALSE
+ (do_trace == 0 && pp->filter_classify_table_index != ~0))
+ {
+ do_trace = vnet_is_packet_traced_inline
+ (b0, pp->filter_classify_table_index, 0 /* full classify */ );
+ }
+
/* Trace all drops, or drops received on a specific interface */
- if (im->pcap_sw_if_index == 0 ||
- im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX])
+ if (do_trace)
{
save_current_data = b0->current_data;
save_current_length = b0->current_length;
else if (b0->current_data > 0)
vlib_buffer_advance (b0, (word) - b0->current_data);
- pcap_add_buffer (&im->pcap_main, vm, bi0, 512);
+ {
+ vlib_buffer_t *last = b0;
+ u32 error_node_index;
+ int drop_string_len;
+ vlib_node_t *n;
+ /* Length of the error string */
+ int error_string_len =
+ clib_strnlen (em->error_strings_heap[b0->error], 128);
+
+ /* Dig up the drop node */
+ error_node_index = vm->node_main.node_by_error[b0->error];
+ n = vlib_get_node (vm, error_node_index);
+
+ /* Length of full drop string, w/ "nodename: " prepended */
+ drop_string_len = error_string_len + vec_len (n->name) + 2;
+
+ /* Find the last buffer in the chain */
+ while (last->flags & VLIB_BUFFER_NEXT_PRESENT)
+ last = vlib_get_buffer (vm, last->next_buffer);
+
+ /*
+ * Append <nodename>: <error-string> to the capture,
+ * only if we can do that without allocating a new buffer.
+ */
+ if (PREDICT_TRUE ((last->current_data + last->current_length)
+ < (VLIB_BUFFER_DEFAULT_DATA_SIZE
+ - drop_string_len)))
+ {
+ clib_memcpy_fast (last->data + last->current_data +
+ last->current_length, n->name,
+ vec_len (n->name));
+ clib_memcpy_fast (last->data + last->current_data +
+ last->current_length + vec_len (n->name),
+ ": ", 2);
+ clib_memcpy_fast (last->data + last->current_data +
+ last->current_length + vec_len (n->name) +
+ 2, em->error_strings_heap[b0->error],
+ error_string_len);
+ last->current_length += drop_string_len;
+ b0->flags &= ~(VLIB_BUFFER_TOTAL_LENGTH_VALID);
+ pcap_add_buffer (&pp->pcap_main, vm, bi0,
+ pp->max_bytes_per_pkt);
+ last->current_length -= drop_string_len;
+ b0->current_data = save_current_data;
+ b0->current_length = save_current_length;
+ continue;
+ }
+ }
+
+ /*
+ * Didn't have space in the last buffer, here's the dropped
+ * packet as-is
+ */
+ pcap_add_buffer (&pp->pcap_main, vm, bi0, pp->max_bytes_per_pkt);
b0->current_data = save_current_data;
b0->current_length = save_current_length;
vlib_frame_t * frame)
{
vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
+ vnet_pcap_t *pp = &vlib_global_main.pcap;
- if (PREDICT_FALSE (im->drop_pcap_enable))
- pcap_drop_trace (vm, im, frame);
+ if (PREDICT_FALSE (pp->pcap_drop_enable))
+ pcap_drop_trace (vm, im, pp, frame);
return interface_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
}
}
#endif /* CLIB_MARCH_VARIANT */
-static clib_error_t *
-pcap_drop_trace_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vnet_interface_main_t *im = &vnm->interface_main;
- u8 *filename;
- u32 max;
- int matched = 0;
- clib_error_t *error = 0;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "on"))
- {
- if (im->drop_pcap_enable == 0)
- {
- if (im->pcap_filename == 0)
- im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
-
- 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 = PCAP_DEF_PKT_TO_CAPTURE;
- if (im->pcap_pkts_to_capture)
- im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture;
-
- im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
- im->drop_pcap_enable = 1;
- matched = 1;
- vlib_cli_output (vm, "pcap drop capture on...");
- }
- else
- {
- vlib_cli_output (vm, "pcap drop capture already on...");
- }
- matched = 1;
- }
- else if (unformat (input, "off"))
- {
- matched = 1;
-
- if (im->drop_pcap_enable)
- {
- vlib_cli_output (vm, "captured %d pkts...",
- im->pcap_main.n_packets_captured);
- if (im->pcap_main.n_packets_captured)
- {
- im->pcap_main.n_packets_to_capture =
- im->pcap_main.n_packets_captured;
- error = pcap_write (&im->pcap_main);
- if (im->pcap_main.flags & PCAP_MAIN_INIT_DONE)
- pcap_close (&im->pcap_main);
- if (error)
- clib_error_report (error);
- else
- vlib_cli_output (vm, "saved to %s...", im->pcap_filename);
- }
- }
- else
- {
- vlib_cli_output (vm, "pcap drop capture already off...");
- }
-
- im->drop_pcap_enable = 0;
- }
- else if (unformat (input, "max %d", &max))
- {
- im->pcap_pkts_to_capture = max;
- matched = 1;
- }
-
- else if (unformat (input, "intfc %U",
- unformat_vnet_sw_interface, vnm,
- &im->pcap_sw_if_index))
- matched = 1;
- else if (unformat (input, "intfc any"))
- {
- im->pcap_sw_if_index = 0;
- matched = 1;
- }
- else if (unformat (input, "file %s", &filename))
- {
- u8 *chroot_filename;
- /* Brain-police user path input */
- if (strstr ((char *) filename, "..")
- || index ((char *) filename, '/'))
- {
- vlib_cli_output (vm, "illegal characters in filename '%s'",
- filename);
- continue;
- }
-
- chroot_filename = format (0, "/tmp/%s%c", filename, 0);
- vec_free (filename);
-
- if (im->pcap_filename)
- vec_free (im->pcap_filename);
- im->pcap_filename = chroot_filename;
- im->pcap_main.file_name = (char *) im->pcap_filename;
- matched = 1;
- }
- else if (unformat (input, "status"))
- {
- if (im->drop_pcap_enable == 0)
- {
- vlib_cli_output (vm, "pcap drop capture is off...");
- continue;
- }
-
- vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...",
- im->pcap_main.n_packets_captured,
- im->pcap_main.n_packets_to_capture);
- matched = 1;
- }
-
- else
- break;
- }
-
- if (matched == 0)
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (pcap_trace_command, static) = {
- .path = "pcap drop trace",
- .short_help =
- "pcap drop trace on off max <nn> intfc <intfc> file <name> status",
- .function = pcap_drop_trace_command_fn,
-};
-/* *INDENT-ON* */
-
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff