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Diffstat (limited to 'src/vnet/unix/pcap.h')
| -rw-r--r-- | src/vnet/unix/pcap.h | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/src/vnet/unix/pcap.h b/src/vnet/unix/pcap.h deleted file mode 100644 index 0706aace496..00000000000 --- a/src/vnet/unix/pcap.h +++ /dev/null @@ -1,244 +0,0 @@ -/* - * Copyright (c) 2015 Cisco and/or its affiliates. - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at: - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* - * pcap.h: libpcap packet capture format - * - * Copyright (c) 2008 Eliot Dresselhaus - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ -/** - * @file - * @brief PCAP utility definitions - */ -#ifndef included_vnet_pcap_h -#define included_vnet_pcap_h - -#include <vlib/vlib.h> - -/** - * @brief Packet types supported by PCAP - * - * null 0 - * ethernet 1 - * ppp 9 - * ip 12 - * hdlc 104 - */ -#define foreach_vnet_pcap_packet_type \ - _ (null, 0) \ - _ (ethernet, 1) \ - _ (ppp, 9) \ - _ (ip, 12) \ - _ (hdlc, 104) - -typedef enum -{ -#define _(f,n) PCAP_PACKET_TYPE_##f = (n), - foreach_vnet_pcap_packet_type -#undef _ -} pcap_packet_type_t; - -#define foreach_pcap_file_header \ - /** 0xa1b2c3d4 host byte order. \ - 0xd4c3b2a1 => need to byte swap everything. */ \ - _ (u32, magic) \ - \ - /** Currently major 2 minor 4. */ \ - _ (u16, major_version) \ - _ (u16, minor_version) \ - \ - /** 0 for GMT. */ \ - _ (u32, time_zone) \ - \ - /** Accuracy of timestamps. Typically set to 0. */ \ - _ (u32, sigfigs) \ - \ - /** Size of largest packet in file. */ \ - _ (u32, max_packet_size_in_bytes) \ - \ - /** One of vnet_pcap_packet_type_t. */ \ - _ (u32, packet_type) - -/** File header struct */ -typedef struct -{ -#define _(t, f) t f; - foreach_pcap_file_header -#undef _ -} pcap_file_header_t; - -#define foreach_pcap_packet_header \ - /** Time stamp in seconds */ \ - _ (u32, time_in_sec) \ - /** Time stamp in microseconds. */ \ - _ (u32, time_in_usec) \ - \ - /** Number of bytes stored in file. */ \ - _ (u32, n_packet_bytes_stored_in_file) \ - /** Number of bytes in actual packet. */ \ - _ (u32, n_bytes_in_packet) - -/** Packet header. */ -typedef struct -{ -#define _(t, f) t f; - foreach_pcap_packet_header -#undef _ - /** Packet data follows. */ - u8 data[0]; -} pcap_packet_header_t; - -/** - * @brief PCAP main state data structure - */ -typedef struct -{ - /** spinlock to protect e.g. pcap_data */ - clib_spinlock_t lock; - - /** File name of pcap output. */ - char *file_name; - - /** Number of packets to capture. */ - u32 n_packets_to_capture; - - /** Packet type */ - pcap_packet_type_t packet_type; - - /** Number of packets currently captured. */ - u32 n_packets_captured; - - /** flags */ - u32 flags; -#define PCAP_MAIN_INIT_DONE (1 << 0) - - /** File descriptor for reading/writing. */ - int file_descriptor; - - /** Bytes written */ - u32 n_pcap_data_written; - - /** Vector of pcap data. */ - u8 *pcap_data; - - /** Packets read from file. */ - u8 **packets_read; - - /** Timestamps */ - u64 *timestamps; - - /** Min/Max Packet bytes */ - u32 min_packet_bytes, max_packet_bytes; -} pcap_main_t; - -/** Write out data to output file. */ -clib_error_t *pcap_write (pcap_main_t * pm); - -/** Read data from file. */ -clib_error_t *pcap_read (pcap_main_t * pm); - -/** - * @brief Add packet - * - * @param *pm - pcap_main_t - * @param time_now - f64 - * @param n_bytes_in_trace - u32 - * @param n_bytes_in_packet - u32 - * - * @return Packet Data - * - */ -static inline void * -pcap_add_packet (pcap_main_t * pm, - f64 time_now, u32 n_bytes_in_trace, u32 n_bytes_in_packet) -{ - pcap_packet_header_t *h; - u8 *d; - - vec_add2 (pm->pcap_data, d, sizeof (h[0]) + n_bytes_in_trace); - h = (void *) (d); - h->time_in_sec = time_now; - h->time_in_usec = 1e6 * (time_now - h->time_in_sec); - h->n_packet_bytes_stored_in_file = n_bytes_in_trace; - h->n_bytes_in_packet = n_bytes_in_packet; - pm->n_packets_captured++; - return h->data; -} - -/** - * @brief Add buffer (vlib_buffer_t) to the trace - * - * @param *pm - pcap_main_t - * @param *vm - vlib_main_t - * @param buffer_index - u32 - * @param n_bytes_in_trace - u32 - * - */ -static inline void -pcap_add_buffer (pcap_main_t * pm, - vlib_main_t * vm, u32 buffer_index, u32 n_bytes_in_trace) -{ - vlib_buffer_t *b = vlib_get_buffer (vm, buffer_index); - u32 n = vlib_buffer_length_in_chain (vm, b); - i32 n_left = clib_min (n_bytes_in_trace, n); - f64 time_now = vlib_time_now (vm); - void *d; - - if (PREDICT_TRUE (pm->n_packets_captured < pm->n_packets_to_capture)) - { - clib_spinlock_lock_if_init (&pm->lock); - d = pcap_add_packet (pm, time_now, n_left, n); - while (1) - { - u32 copy_length = clib_min ((u32) n_left, b->current_length); - clib_memcpy_fast (d, b->data + b->current_data, copy_length); - n_left -= b->current_length; - if (n_left <= 0) - break; - d += b->current_length; - ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT); - b = vlib_get_buffer (vm, b->next_buffer); - } - clib_spinlock_unlock_if_init (&pm->lock); - } -} - -#endif /* included_vnet_pcap_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |