diff options
Diffstat (limited to 'extras/wireshark')
| -rw-r--r-- | extras/wireshark/packet-vpp.c | 959 |
1 files changed, 178 insertions, 781 deletions
diff --git a/extras/wireshark/packet-vpp.c b/extras/wireshark/packet-vpp.c index fc568dae77d..5094f5d0066 100644 --- a/extras/wireshark/packet-vpp.c +++ b/extras/wireshark/packet-vpp.c @@ -35,103 +35,49 @@ void proto_register_vpp(void); void proto_reg_handoff_vpp(void); static int proto_vpp = -1; +static int proto_vpp_metadata = -1; static int proto_vpp_opaque = -1; +static int proto_vpp_opaque2 = -1; static int proto_vpp_trace = -1; static int hf_vpp_nodename = -1; +static int hf_vpp_metadata = -1; static int hf_vpp_buffer_index = -1; - -static int hf_vpp_buffer_current_data = -1; -static int hf_vpp_buffer_current_length = -1; - -static int hf_vpp_buffer_flags = -1; -static int hf_vpp_buffer_flag_non_default_freelist = -1; -static int hf_vpp_buffer_flag_traced = -1; -static int hf_vpp_buffer_flag_next_present = -1; -static int hf_vpp_buffer_flag_total_length_valid = -1; -static int hf_vpp_buffer_flag_ext_hdr_valid = -1; -static int hf_vpp_buffer_flag_l4_checksum_computed = -1; -static int hf_vpp_buffer_flag_l4_checksum_correct = -1; -static int hf_vpp_buffer_flag_vlan_2_deep = -1; -static int hf_vpp_buffer_flag_vlan_1_deep = -1; -static int hf_vpp_buffer_flag_span_clone = -1; -static int hf_vpp_buffer_flag_loop_counter_valid = -1; -static int hf_vpp_buffer_flag_locally_originated = -1; -static int hf_vpp_buffer_flag_is_ip4 = -1; -static int hf_vpp_buffer_flag_is_ip6 = -1; -static int hf_vpp_buffer_flag_offload_ip_checksum = -1; -static int hf_vpp_buffer_flag_offload_tcp_checksum = -1; -static int hf_vpp_buffer_flag_offload_udp_checksum = -1; -static int hf_vpp_buffer_flag_is_natted = -1; -static int hf_vpp_buffer_flag_l2_hdr_offset_valid = -1; -static int hf_vpp_buffer_flag_l3_hdr_offset_valid = -1; -static int hf_vpp_buffer_flag_l4_hdr_offset_valid = -1; -static int hf_vpp_buffer_flag_flow_report = -1; -static int hf_vpp_buffer_flag_is_dvr = -1; -static int hf_vpp_buffer_flag_qos_data_valid = -1; -static int hf_vpp_buffer_flow_id = -1; -static int hf_vpp_buffer_next_buffer = -1; -static int hf_vpp_buffer_current_config_index = -1; -static int hf_vpp_buffer_error_index = -1; -static int hf_vpp_buffer_n_add_refs = -1; -static int hf_vpp_buffer_buffer_pool_index = -1; - -static int hf_vpp_buffer_opaque_raw = -1; -static int hf_vpp_buffer_opaque_opaque = -1; - +static int hf_vpp_buffer_opaque = -1; +static int hf_vpp_buffer_opaque2 = -1; static int hf_vpp_buffer_trace = -1; static gint ett_vpp = -1; static gint ett_vpp_opaque = -1; +static gint ett_vpp_opaque2 = -1; +static gint ett_vpp_metadata = -1; static gint ett_vpp_trace = -1; static dissector_handle_t vpp_dissector_handle; static dissector_handle_t vpp_opaque_dissector_handle; +static dissector_handle_t vpp_opaque2_dissector_handle; +static dissector_handle_t vpp_metadata_dissector_handle; static dissector_handle_t vpp_trace_dissector_handle; -static dissector_table_t vpp_subdissector_table; +typedef enum + { + VLIB_NODE_PROTO_HINT_NONE = 0, + VLIB_NODE_PROTO_HINT_ETHERNET, + VLIB_NODE_PROTO_HINT_IP4, + VLIB_NODE_PROTO_HINT_IP6, + VLIB_NODE_PROTO_HINT_TCP, + VLIB_NODE_PROTO_HINT_UDP, + VLIB_NODE_N_PROTO_HINTS, + } vlib_node_proto_hint_t; -/* List of next dissector names that we know about */ -#define foreach_next_dissector \ -_(eth_maybefcs) \ -_(ip) \ -_(ipv6) \ -_(tcp) +static dissector_handle_t next_dissectors[VLIB_NODE_N_PROTO_HINTS]; -#define _(a) static dissector_handle_t a##_dissector_handle; -foreach_next_dissector; -#undef _ - -/* - * node-name, next dissector name pairs - * - * Unfortunately, -Werror=c++-compat causes - * the node names "ipX-not-enabled" to throw a shoe if - * not explicitly quoted. Never mind that the first macro - * arg is [only] used as a string (#xxx). - */ - -/* - * Note: in addition to these direct mappings, we - * send traces w/ b->data[b->current_data] = 0x45 to - * the ip dissector, and 0x60 to the ipv6 dissector. - * - * It pays to add direct mappings for common places which - * may receive broken packets during development. ip4-lookup and - * ip6-lookup are obvious places where people send - * hand-crafted packets which may turn out to be broken. - */ -#define foreach_node_to_dissector_pair \ -_("ethernet-input", eth_maybefcs) \ -_("ip4-glean", ip) \ -_("ip4-icmp-error", ip) \ -_("ip4-input", ip) \ -_("ip4-input-no-checksum", ip) \ -_("ip4-local", ip) \ -_("ip4-lookup", ip) \ -_("ip4-udp-lookup", ip) \ -_("ip6-lookup", ipv6) \ -_("tcp4-output", tcp) \ -_("tcp6-output", tcp) +/* List of next dissectors hints that we know about */ +#define foreach_next_dissector \ +_(VLIB_NODE_PROTO_HINT_ETHERNET, eth_maybefcs) \ +_(VLIB_NODE_PROTO_HINT_IP4, ip) \ +_(VLIB_NODE_PROTO_HINT_IP6, ipv6) \ +_(VLIB_NODE_PROTO_HINT_TCP, tcp) \ +_(VLIB_NODE_PROTO_HINT_UDP, udp) static void add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start, @@ -152,6 +98,30 @@ add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start, } static int +dissect_vpp_metadata (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + void* data _U_) +{ + int offset = 0; + proto_item *ti; + proto_tree *metadata_tree; + gint metadata_string_length; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "VPP-Metadata"); + col_clear(pinfo->cinfo, COL_INFO); + + ti = proto_tree_add_item(tree, proto_vpp_metadata, tvb, offset, -1, ENC_NA); + metadata_tree = proto_item_add_subtree(ti, ett_vpp_metadata); + + /* How long is the metadata string? */ + metadata_string_length = tvb_strsize (tvb, offset); + + add_multi_line_string_to_tree (metadata_tree, tvb, 0, + metadata_string_length, + hf_vpp_metadata); + return tvb_captured_length(tvb); +} + +static int dissect_vpp_trace (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { @@ -167,8 +137,7 @@ dissect_vpp_trace (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, trace_tree = proto_item_add_subtree(ti, ett_vpp_trace); /* How long is the trace string? */ - (void ) tvb_get_stringz_enc (wmem_packet_scope(), tvb, 0, - &trace_string_length, ENC_ASCII); + trace_string_length = tvb_strsize (tvb, offset); add_multi_line_string_to_tree (trace_tree, tvb, 0, trace_string_length, @@ -176,248 +145,6 @@ dissect_vpp_trace (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, return tvb_captured_length(tvb); } -/* - * BIG FAT WARNING: it's impossible to #include the vpp header files, - * so this is a private copy of .../src/vnet/buffer.h, with - * some vpp typedefs thrown in for good measure. - */ - -typedef unsigned int u32; -typedef unsigned short int u16; -typedef short int i16; -typedef unsigned char u8; -typedef unsigned long long u64; - -typedef struct -{ - u32 sw_if_index[2]; - i16 l2_hdr_offset; - i16 l3_hdr_offset; - i16 l4_hdr_offset; - u8 feature_arc_index; - u8 dont_waste_me; - - union - { - /* IP4/6 buffer opaque. */ - struct - { - /* Adjacency from destination IP address lookup [VLIB_TX]. - Adjacency from source IP address lookup [VLIB_RX]. - This gets set to ~0 until source lookup is performed. */ - u32 adj_index[2]; - - union - { - struct - { - /* Flow hash value for this packet computed from IP src/dst address - protocol and ports. */ - u32 flow_hash; - - union - { - /* next protocol */ - u32 save_protocol; - - /* Hint for transport protocols */ - u32 fib_index; - }; - - /* Rewrite length */ - u32 save_rewrite_length; - - /* MFIB RPF ID */ - u32 rpf_id; - }; - - /* ICMP */ - struct - { - u8 type; - u8 code; - u32 data; - } icmp; - - /* reassembly */ - union - { - /* in/out variables */ - struct - { - u32 next_index; /* index of next node - ignored if "feature" node */ - u16 estimated_mtu; /* estimated MTU calculated during reassembly */ - }; - /* internal variables used during reassembly */ - struct - { - u16 fragment_first; - u16 fragment_last; - u16 range_first; - u16 range_last; - u32 next_range_bi; - u16 ip6_frag_hdr_offset; - }; - } reass; - }; - - } ip; - - /* - * MPLS: - * data copied from the MPLS header that was popped from the packet - * during the look-up. - */ - struct - { - /* do not overlay w/ ip.adj_index[0,1] nor flow hash */ - u32 pad[3]; - u8 ttl; - u8 exp; - u8 first; - /* Rewrite length */ - u32 save_rewrite_length; - /* - * BIER - the number of bytes in the header. - * the len field in the header is not authoritative. It's the - * value in the table that counts. - */ - struct - { - u8 n_bytes; - } bier; - } mpls; - - /* l2 bridging path, only valid there */ - struct opaque_l2 - { - u32 feature_bitmap; - u16 bd_index; /* bridge-domain index */ - u8 l2_len; /* ethernet header length */ - u8 shg; /* split-horizon group */ - u16 l2fib_sn; /* l2fib bd/int seq_num */ - u8 bd_age; /* aging enabled */ - } l2; - - /* l2tpv3 softwire encap, only valid there */ - struct - { - u32 pad[4]; /* do not overlay w/ ip.adj_index[0,1] */ - u8 next_index; - u32 session_index; - } l2t; - - /* L2 classify */ - struct - { - struct opaque_l2 pad; - union - { - u32 table_index; - u32 opaque_index; - }; - u64 hash; - } l2_classify; - - /* vnet policer */ - struct - { - u32 pad[8 - 2 - 1]; /* to end of opaque */ - u32 index; - } policer; - - /* interface output features */ - struct - { - u32 flags; - u32 sad_index; - } ipsec; - - /* MAP */ - struct - { - u16 mtu; - } map; - - /* MAP-T */ - struct - { - u32 map_domain_index; - struct - { - u32 saddr, daddr; - u16 frag_offset; //Fragmentation header offset - u16 l4_offset; //L4 header overall offset - u8 l4_protocol; //The final protocol number - } v6; //Used by ip6_map_t only - u16 checksum_offset; //L4 checksum overall offset - u16 mtu; //Exit MTU - } map_t; - - /* IP Fragmentation */ - struct - { - u32 pad[2]; /* do not overlay w/ ip.adj_index[0,1] */ - u16 mtu; - u8 next_index; - u8 flags; //See ip_frag.h - } ip_frag; - - /* COP - configurable junk filter(s) */ - struct - { - /* Current configuration index. */ - u32 current_config_index; - } cop; - - /* LISP */ - struct - { - /* overlay address family */ - u16 overlay_afi; - } lisp; - - /* TCP */ - struct - { - u32 connection_index; - u32 seq_number; - u32 seq_end; - u32 ack_number; - u16 hdr_offset; /**< offset relative to ip hdr */ - u16 data_offset; /**< offset relative to ip hdr */ - u16 data_len; /**< data len */ - u8 flags; - } tcp; - - /* SCTP */ - struct - { - u32 connection_index; - u16 sid; /**< Stream ID */ - u16 ssn; /**< Stream Sequence Number */ - u32 tsn; /**< Transmission Sequence Number */ - u16 hdr_offset; /**< offset relative to ip hdr */ - u16 data_offset; /**< offset relative to ip hdr */ - u16 data_len; /**< data len */ - u8 subconn_idx; /**< index of the sub_connection being used */ - u8 flags; - } sctp; - - /* SNAT */ - struct - { - u32 flags; - } snat; - - u32 unused[6]; - }; -} vnet_buffer_opaque_t; - - -#define PTAS proto_tree_add_string(opaque_tree, \ - hf_vpp_buffer_opaque_opaque, \ - tvb, 0, strlen(tmpbuf), tmpbuf) static int dissect_vpp_opaque (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, @@ -426,12 +153,7 @@ dissect_vpp_opaque (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset = 0; proto_item *ti; proto_tree *opaque_tree; - char tmpbuf [512]; - int print_offset; - guint32 opaque[10]; - vnet_buffer_opaque_t _o, *o = &_o; - - int i; + gint opaque_string_length; col_set_str(pinfo->cinfo, COL_PROTOCOL, "VPP-Opaque"); col_clear(pinfo->cinfo, COL_INFO); @@ -439,191 +161,31 @@ dissect_vpp_opaque (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, ti = proto_tree_add_item(tree, proto_vpp_opaque, tvb, offset, -1, ENC_NA); opaque_tree = proto_item_add_subtree(ti, ett_vpp_opaque); - print_offset = 0; - for (i = 0; i < 10; i++) { - opaque[i] = tvb_get_guint32 (tvb, offset + 4*i, ENC_LITTLE_ENDIAN); - snprintf (tmpbuf + print_offset, sizeof(tmpbuf) - print_offset, - "%08x ", opaque[i]); - print_offset = strlen (tmpbuf); - } - offset += 40; - - proto_tree_add_string (opaque_tree, hf_vpp_buffer_opaque_raw, tvb, 0, - strlen(tmpbuf), tmpbuf); - - memset (o, 0, sizeof (*o)); - memcpy (o, opaque, sizeof (opaque)); - - snprintf (tmpbuf, sizeof(tmpbuf), - "sw_if_index[VLIB_RX]: %d, sw_if_index[VLIB_TX]: %d", - o->sw_if_index[0], o->sw_if_index[1]); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "L2 offset %d, L3 offset %d, L4 offset %d, feature arc index %d", - (u32)(o->l2_hdr_offset), - (u32)(o->l3_hdr_offset), - (u32)(o->l4_hdr_offset), - (u32)(o->feature_arc_index)); - PTAS; + opaque_string_length = tvb_strsize (tvb, offset); + add_multi_line_string_to_tree (opaque_tree, tvb, 0, opaque_string_length, + hf_vpp_buffer_opaque); - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.adj_index[VLIB_RX]: %d, ip.adj_index[VLIB_TX]: %d", - (u32)(o->ip.adj_index[0]), - (u32)(o->ip.adj_index[1])); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.flow_hash: 0x%x, ip.save_protocol: 0x%x, ip.fib_index: %d", - o->ip.flow_hash, o->ip.save_protocol, o->ip.fib_index); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.save_rewrite_length: %d, ip.rpf_id: %d", - o->ip.save_rewrite_length, o->ip.rpf_id); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.icmp.type: %d ip.icmp.code: %d, ip.icmp.data: 0x%x", - (u32)(o->ip.icmp.type), - (u32)(o->ip.icmp.code), - o->ip.icmp.data); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.reass.next_index: %d, ip.reass.estimated_mtu: %d", - o->ip.reass.next_index, (u32)(o->ip.reass.estimated_mtu)); - PTAS; - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.reass.fragment_first: %d ip.reass.fragment_last: %d", - (u32)(o->ip.reass.fragment_first), - (u32)(o->ip.reass.fragment_last)); - PTAS; - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.reass.range_first: %d ip.reass.range_last: %d", - (u32)(o->ip.reass.range_first), - (u32)(o->ip.reass.range_last)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ip.reass.next_range_bi: 0x%x, ip.reass.ip6_frag_hdr_offset: %d", - o->ip.reass.next_range_bi, - (u32)(o->ip.reass.ip6_frag_hdr_offset)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "mpls.ttl: %d, mpls.exp: %d, mpls.first: %d, " - "mpls.save_rewrite_length: %d, mpls.bier.n_bytes: %d", - (u32)(o->mpls.ttl), (u32)(o->mpls.exp), (u32)(o->mpls.first), - o->mpls.save_rewrite_length, (u32)(o->mpls.bier.n_bytes)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "l2.feature_bitmap: %08x, l2.bd_index: %d, l2.l2_len: %d, " - "l2.shg: %d, l2.l2fib_sn: %d, l2.bd_age: %d", - o->l2.feature_bitmap, (u32)(o->l2.bd_index), - (u32)(o->l2.l2_len), (u32)(o->l2.shg), (u32)(o->l2.l2fib_sn), - (u32)(o->l2.bd_age)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "l2t.next_index: %d, l2t.session_index: %d", - (u32)(o->l2t.next_index), o->l2t.session_index); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "l2_classify.table_index: %d, l2_classify.opaque_index: %d, " - "l2_classify.hash: 0x%llx", - o->l2_classify.table_index, - o->l2_classify.opaque_index, - o->l2_classify.hash); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "policer.index: %d", o->policer.index); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ipsec.flags: 0x%x, ipsec.sad_index: %d", - o->ipsec.flags, o->ipsec.sad_index); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "map.mtu: %d", (u32)(o->map.mtu)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "map_t.v6.saddr: 0x%x, map_t.v6.daddr: 0x%x, " - "map_t.v6.frag_offset: %d, map_t.v6.l4_offset: %d", - o->map_t.v6.saddr, - o->map_t.v6.daddr, - (u32)(o->map_t.v6.frag_offset), - (u32)(o->map_t.v6.l4_offset)); - PTAS; - snprintf (tmpbuf, sizeof(tmpbuf), - "map_t.v6.l4_protocol: %d, map_t.checksum_offset: %d, " - "map_t.mtu: %d", - (u32)(o->map_t.v6.l4_protocol), - (u32)(o->map_t.checksum_offset), - (u32)(o->map_t.mtu)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "ip_frag.mtu: %d, ip_frag.next_index: %d, ip_frag.flags: 0x%x", - (u32)(o->ip_frag.mtu), - (u32)(o->ip_frag.next_index), - (u32)(o->ip_frag.flags)); - PTAS; + return tvb_captured_length(tvb); +} - snprintf (tmpbuf, sizeof(tmpbuf), - "cop.current_config_index: %d", - o->cop.current_config_index); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "lisp.overlay_afi: %d", - (u32)(o->lisp.overlay_afi)); - PTAS; +static int +dissect_vpp_opaque2 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + void* data _U_) +{ + int offset = 0; + proto_item *ti; + proto_tree *opaque2_tree; + gint opaque2_string_length; - snprintf (tmpbuf, sizeof(tmpbuf), - "tcp.connection_index: %d, tcp.seq_number: %d, tcp.seq_end: %d, " - "tcp.ack_number: %d, tcp.hdr_offset: %d, tcp.data_offset: %d", - o->tcp.connection_index, - o->tcp.seq_number, - o->tcp.seq_end, - o->tcp.ack_number, - (u32)(o->tcp.hdr_offset), - (u32)(o->tcp.data_offset)); - PTAS; + col_set_str(pinfo->cinfo, COL_PROTOCOL, "VPP-Opaque2"); + col_clear(pinfo->cinfo, COL_INFO); - snprintf (tmpbuf, sizeof(tmpbuf), - "tcp.data_len: %d, tcp.flags: 0x%x", - (u32)(o->tcp.data_len), - (u32)(o->tcp.flags)); - PTAS; + ti = proto_tree_add_item(tree, proto_vpp_opaque2, tvb, offset, -1, ENC_NA); + opaque2_tree = proto_item_add_subtree(ti, ett_vpp_opaque2); - snprintf (tmpbuf, sizeof(tmpbuf), - "sctp.connection_index: %d, sctp.sid: %d, sctp.ssn: %d, " - "sctp.tsn: %d, sctp.hdr_offset: %d", - o->sctp.connection_index, - (u32)(o->sctp.sid), - (u32)(o->sctp.ssn), - (u32)(o->sctp.tsn), - (u32)(o->sctp.hdr_offset)); - PTAS; - snprintf (tmpbuf, sizeof(tmpbuf), - "sctp.data_offset: %d, sctp.data_len: %d, sctp.subconn_idx: %d, " - "sctp.flags: 0x%x", - (u32)(o->sctp.data_offset), - (u32)(o->sctp.data_len), - (u32)(o->sctp.subconn_idx), - (u32)(o->sctp.flags)); - PTAS; - - snprintf (tmpbuf, sizeof(tmpbuf), - "snat.flags: 0x%x", - o->snat.flags); - PTAS; + opaque2_string_length = tvb_strsize (tvb, offset); + add_multi_line_string_to_tree (opaque2_tree, tvb, 0, opaque2_string_length, + hf_vpp_buffer_opaque2); return tvb_captured_length(tvb); } @@ -634,40 +196,13 @@ dissect_vpp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) { proto_item *ti; proto_tree *vpp_tree; - tvbuff_t *opaque_tvb, *eth_tvb, *trace_tvb; + tvbuff_t *metadata_tvb, *opaque_tvb, *opaque2_tvb, *eth_tvb, *trace_tvb; int offset = 0; - guint8 major_version, minor_version; - guint8 name_length; + guint8 major_version, minor_version, string_count, protocol_hint; guint8 *name; - guint16 trace_length; - int i; - static const int *buffer_flags[] = { - &hf_vpp_buffer_flag_non_default_freelist, - &hf_vpp_buffer_flag_traced, - &hf_vpp_buffer_flag_next_present, - &hf_vpp_buffer_flag_total_length_valid, - &hf_vpp_buffer_flag_ext_hdr_valid, - &hf_vpp_buffer_flag_l4_checksum_computed, - &hf_vpp_buffer_flag_l4_checksum_correct, - &hf_vpp_buffer_flag_vlan_2_deep, - &hf_vpp_buffer_flag_vlan_1_deep, - &hf_vpp_buffer_flag_span_clone, - &hf_vpp_buffer_flag_loop_counter_valid, - &hf_vpp_buffer_flag_locally_originated, - &hf_vpp_buffer_flag_is_ip4, - &hf_vpp_buffer_flag_is_ip6, - &hf_vpp_buffer_flag_offload_ip_checksum, - &hf_vpp_buffer_flag_offload_tcp_checksum, - &hf_vpp_buffer_flag_offload_udp_checksum, - &hf_vpp_buffer_flag_is_natted, - &hf_vpp_buffer_flag_l2_hdr_offset_valid, - &hf_vpp_buffer_flag_l3_hdr_offset_valid, - &hf_vpp_buffer_flag_l4_hdr_offset_valid, - &hf_vpp_buffer_flag_flow_report, - &hf_vpp_buffer_flag_is_dvr, - &hf_vpp_buffer_flag_qos_data_valid, - NULL - }; + guint len; + guint8 maybe_protocol_id; + dissector_handle_t use_this_dissector; col_set_str(pinfo->cinfo, COL_PROTOCOL, "VPP"); col_clear(pinfo->cinfo, COL_INFO); @@ -685,77 +220,55 @@ dissect_vpp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) ws_debug_printf ("WARNING: version mismatch (%d, %d)", major_version, minor_version); - /* Skip the buffer index */ - offset += 4; - - /* Recover the node name */ - name_length = tvb_get_guint8 (tvb, offset); + /* Number of counted strings in this trace record */ + string_count = tvb_get_guint8 (tvb, offset); offset++; - name = (guint8 *) g_malloc (name_length + 1); - for (i = 0; i < name_length; i++, offset++) { - name[i] = tvb_get_guint8 (tvb, offset); - } - name[i] = 0; + /* + * Hint: protocol which should be at b->data[b->current_data] + * It will be a while before vpp sends useful hints for every + * possible node, see heuristic below + */ + protocol_hint = tvb_get_guint8 (tvb, offset); offset++; - proto_tree_add_string(vpp_tree, hf_vpp_nodename, tvb, 5, name_length, - name); + /* Buffer Index */ proto_tree_add_item(vpp_tree, hf_vpp_buffer_index, tvb, - 0 /* bi at offset 0 */, 4, ENC_LITTLE_ENDIAN); - - proto_tree_add_item(vpp_tree, hf_vpp_buffer_current_data, tvb, - offset, 2, ENC_LITTLE_ENDIAN); - offset += 2; - proto_tree_add_item(vpp_tree, hf_vpp_buffer_current_length, tvb, - offset, 2, ENC_LITTLE_ENDIAN); - offset += 2; - - proto_tree_add_bitmask(vpp_tree, tvb, offset, - hf_vpp_buffer_flags, ett_vpp, - buffer_flags, ENC_LITTLE_ENDIAN); + offset, 4, ENC_BIG_ENDIAN); offset += 4; - proto_tree_add_item(vpp_tree, hf_vpp_buffer_flow_id, tvb, - offset, 4, ENC_LITTLE_ENDIAN); - offset += 4; - - proto_tree_add_item(vpp_tree, hf_vpp_buffer_next_buffer, tvb, - offset, 4, ENC_LITTLE_ENDIAN); - offset += 4; - - proto_tree_add_item(vpp_tree, hf_vpp_buffer_current_config_index, tvb, - offset, 4, ENC_LITTLE_ENDIAN); - offset += 4; - - proto_tree_add_item(vpp_tree, hf_vpp_buffer_error_index, tvb, - offset, 2, ENC_LITTLE_ENDIAN); - offset += 2; - - proto_tree_add_item(vpp_tree, hf_vpp_buffer_n_add_refs, tvb, - offset, 1, ENC_LITTLE_ENDIAN); - offset += 1; - - proto_tree_add_item(vpp_tree, hf_vpp_buffer_buffer_pool_index, tvb, - offset, 1, ENC_LITTLE_ENDIAN); - offset += 1; - + /* Nodename */ + len = tvb_strsize (tvb, offset); + name = tvb_get_string_enc (wmem_packet_scope(), tvb, offset, len, + ENC_ASCII); + proto_tree_add_string (tree, hf_vpp_nodename, tvb, offset, len, name); + offset += len; + + /* Metadata */ + len = tvb_strsize (tvb, offset); + metadata_tvb = tvb_new_subset_remaining (tvb, offset); + call_dissector (vpp_metadata_dissector_handle, metadata_tvb, pinfo, tree); + offset += len; + + /* Opaque */ + len = tvb_strsize (tvb, offset); opaque_tvb = tvb_new_subset_remaining (tvb, offset); call_dissector (vpp_opaque_dissector_handle, opaque_tvb, pinfo, tree); - - /* Skip opaque */ - offset += 40; - /* skip second opaque line */ - offset += 64; + offset += len; - trace_length = tvb_get_guint16 (tvb, offset, ENC_LITTLE_ENDIAN); - offset += 2; + /* Opaque2 */ + len = tvb_strsize (tvb, offset); + opaque2_tvb = tvb_new_subset_remaining (tvb, offset); + call_dissector (vpp_opaque2_dissector_handle, opaque2_tvb, pinfo, tree); + offset += len; - if (trace_length > 0) { + /* Trace, if present */ + if (string_count > 4) + { + len = tvb_strsize (tvb, offset); trace_tvb = tvb_new_subset_remaining (tvb, offset); - offset += trace_length; - call_dissector (vpp_trace_dissector_handle, trace_tvb, pinfo, tree); + offset += len; } eth_tvb = tvb_new_subset_remaining (tvb, offset); @@ -766,227 +279,103 @@ dissect_vpp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) * * Failing that, pretend its an ethernet packet */ - if (!dissector_try_string (vpp_subdissector_table, name, eth_tvb, - pinfo, tree, NULL)) { - guint8 maybe_protocol_id; - dissector_handle_t best_guess_dissector_handle - = eth_maybefcs_dissector_handle; - + if (protocol_hint >= array_length(next_dissectors)) { + ws_debug_printf ("protocol_hint %d out of range (max %d)", + (int) protocol_hint, + (int) array_length(next_dissectors)); + protocol_hint = 0; + } + /* See setup for hint == 0 below */ + use_this_dissector = next_dissectors [protocol_hint]; + if (protocol_hint == 0) { maybe_protocol_id = tvb_get_guint8 (tvb, offset); - + switch (maybe_protocol_id) { case 0x45: - best_guess_dissector_handle = ip_dissector_handle; + use_this_dissector = next_dissectors[VLIB_NODE_PROTO_HINT_IP4]; break; case 0x60: - best_guess_dissector_handle = ipv6_dissector_handle; + use_this_dissector = next_dissectors[VLIB_NODE_PROTO_HINT_IP6]; break; default: break; } - call_dissector (best_guess_dissector_handle, eth_tvb, pinfo, tree); } - - g_free (name); + call_dissector (use_this_dissector, eth_tvb, pinfo, tree); return tvb_captured_length(tvb); } void proto_register_vpp(void) { - static hf_register_info hf[] = { + static hf_register_info vpp_hf[] = { { &hf_vpp_buffer_index, - { "BufferIndex", "vpp.bufferindex", FT_UINT32, BASE_HEX, NULL, 0x0, + { "BufferIndex", "vpp.BufferIndex", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }, }, { &hf_vpp_nodename, - { "NodeName", "vpp.nodename", FT_STRINGZ, BASE_NONE, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_current_data, - { "CurrentData", "vpp.current_data", FT_INT16, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_current_length, - { "CurrentLength", "vpp.current_length", FT_UINT16, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - - /* - * Warning: buffer flag bits are not cast in concrete, and it's - * impossible to imagine trying to compile WS with even a subset - * of the actual header files. - * - * See .../src/vlib/buffer.h, .../src/vnet/buffer.h in - * the fd.io vpp source tree. - */ - - { &hf_vpp_buffer_flags, - { "BufferFlags", "vpp.flags", FT_UINT32, BASE_HEX, NULL, 0x0, + { "NodeName", "vpp.NodeName", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }, }, + }; - { &hf_vpp_buffer_flag_non_default_freelist, - { "NonDefaultFreelist", "vpp.flags.non_default_freelist", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x1, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_traced, - { "Traced", "vpp.flags.traced", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x2, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_next_present, - { "NextPresent", "vpp.flags.next_present", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x4, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_total_length_valid, - { "TotalLengthValid", "vpp.flags.total_length_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x8, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_ext_hdr_valid, - { "ExtHeaderValid", "vpp.flags.ext_hdr_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x10, NULL, HFILL }, - }, - - { &hf_vpp_buffer_flag_l4_checksum_computed, - { "L4ChecksumComputed", "vpp.flags.l4_checksum_computed", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x80000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_l4_checksum_correct, - { "L4ChecksumCorrect", "vpp.flags.l4_checksum_correct", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x40000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_vlan_2_deep, - { "Vlan2Deep", "vpp.flags.vlan_2_deep", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x20000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_vlan_1_deep, - { "Vlan1Deep", "vpp.flags.vlan_1_deep", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x10000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_span_clone, - { "SpanClone", "vpp.flags.span_clone", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x08000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_loop_counter_valid, - { "LoopCounterValid", "vpp.flags.loop_counter_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x04000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_locally_originated, - { "LocallyOriginated", "vpp.flags.locally_originated", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x02000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_is_ip4, - { "IsIP4", "vpp.flags.is_ip4", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x01000000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_is_ip6, - { "IsIP4", "vpp.flags.is_ip6", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00800000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_offload_ip_checksum, - { "OffloadIPChecksum", "vpp.flags.offload_ip_checksum", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00400000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_offload_tcp_checksum, - { "OffloadTCPChecksum", "vpp.flags.offload_tcp_checksum", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00200000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_offload_udp_checksum, - { "OffloadUDPChecksum", "vpp.flags.offload_udp_checksum", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00100000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_is_natted, - { "IsNATted", "vpp.flags.is_natted", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00080000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_l2_hdr_offset_valid, - { "L2HdrOffsetValid", "vpp.flags.l2_hdr_offset_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00040000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_l3_hdr_offset_valid, - { "L3HdrOffsetValid", "vpp.flags.l3_hdr_offset_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00020000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_l4_hdr_offset_valid, - { "L4HdrOffsetValid", "vpp.flags.l4_hdr_offset_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00010000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_flow_report, - { "FlowReport", "vpp.flags.flow_report", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00008000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_is_dvr, - { "IsDVR", "vpp.flags.is_dvr", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00004000, NULL, HFILL }, - }, - { &hf_vpp_buffer_flag_qos_data_valid, - { "QOSDataValid", "vpp.flags.qos_data_valid", - FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00002000, NULL, HFILL }, - }, - - { &hf_vpp_buffer_flow_id, - { "FlowID", "vpp.flow_id", FT_UINT32, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_next_buffer, - { "NextBuffer", "vpp.next_buffer", FT_UINT32, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_current_config_index, - { "CurrentConfigIndex", "vpp.current_config_index", - FT_UINT32, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_error_index, - { "ErrorIndex", "vpp.error_index", - FT_UINT16, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_n_add_refs, - { "AddRefs", "vpp.n_add_refs_index", - FT_UINT8, BASE_DEC, NULL, 0x0, - NULL, HFILL }, - }, - { &hf_vpp_buffer_buffer_pool_index, - { "BufferPoolIndex", "vpp.buffer_pool_index", - FT_UINT8, BASE_DEC, NULL, 0x0, - NULL, HFILL }, + static hf_register_info metadata_hf[] = { + { &hf_vpp_metadata, + { "Metadata", "vpp.metadata", + FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }, }, }; static hf_register_info opaque_hf[] = { - { &hf_vpp_buffer_opaque_raw, - { "Raw ", "vppMetadata.opaque_raw", FT_STRINGZ, BASE_NONE, NULL, 0x0, - NULL, HFILL }, + { &hf_vpp_buffer_opaque, + { "Opaque", "vpp.opaque", + FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }, }, - { &hf_vpp_buffer_opaque_opaque, - { "Opaque", "vppMetadata.opaque", + }; + + static hf_register_info opaque2_hf[] = { + { &hf_vpp_buffer_opaque2, + { "Opaque2", "vpp.opaque2", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }, }, }; static hf_register_info trace_hf[] = { { &hf_vpp_buffer_trace, - { "Trace", "vppTrace.trace", FT_STRINGZ, BASE_NONE, NULL, 0x0, + { "Trace", "vpp.trace", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }, }, }; - static gint *ett[] = { + static gint *vpp_ett[] = { &ett_vpp, }; + static gint *ett_metadata[] = { + &ett_vpp_metadata, + }; static gint *ett_opaque[] = { &ett_vpp_opaque, }; + static gint *ett_opaque2[] = { + &ett_vpp_opaque2, + }; static gint *ett_trace[] = { &ett_vpp_trace, }; - proto_vpp = proto_register_protocol("VPP Buffer Metadata", "VPP", "vpp"); - proto_register_field_array(proto_vpp, hf, array_length(hf)); - proto_register_subtree_array (ett, array_length(ett)); + proto_vpp = proto_register_protocol("VPP Dispatch Trace", "VPP", "vpp"); + proto_register_field_array(proto_vpp, vpp_hf, array_length(vpp_hf)); + proto_register_subtree_array (vpp_ett, array_length(vpp_ett)); register_dissector("vpp", dissect_vpp, proto_vpp); + proto_vpp_metadata = proto_register_protocol("VPP Buffer Metadata", + "VPP-Metadata", + "vpp-metadata"); + proto_register_field_array(proto_vpp_metadata, metadata_hf, + array_length(metadata_hf)); + proto_register_subtree_array (ett_metadata, array_length(ett_metadata)); + register_dissector("vppMetadata", dissect_vpp_metadata, proto_vpp_metadata); + proto_vpp_opaque = proto_register_protocol("VPP Buffer Opaque", "VPP-Opaque", "vpp-opaque"); proto_register_field_array(proto_vpp_opaque, opaque_hf, @@ -994,6 +383,14 @@ proto_register_vpp(void) proto_register_subtree_array (ett_opaque, array_length(ett_opaque)); register_dissector("vppOpaque", dissect_vpp_opaque, proto_vpp_opaque); + proto_vpp_opaque2 = proto_register_protocol("VPP Buffer Opaque2", "VPP-Opaque2", + "vpp-opaque2"); + proto_register_field_array(proto_vpp_opaque2, opaque2_hf, + array_length(opaque2_hf)); + proto_register_subtree_array (ett_opaque2, array_length(ett_opaque2)); + register_dissector("vppOpaque2", dissect_vpp_opaque2, proto_vpp_opaque2); + + proto_vpp_trace = proto_register_protocol("VPP Buffer Trace", "VPP-Trace", "vpp-trace"); proto_register_field_array(proto_vpp_trace, trace_hf, @@ -1001,22 +398,22 @@ proto_register_vpp(void) proto_register_subtree_array (ett_trace, array_length(ett_trace)); register_dissector("vppTrace", dissect_vpp_trace, proto_vpp_trace); - vpp_subdissector_table = register_dissector_table - ("vpp", "VPP per-node next dissector table", proto_vpp, - FT_STRING, BASE_NONE); - -#define _(n,d) \ - d##_dissector_handle = find_dissector(#d); \ - dissector_add_string ("vpp", n, d##_dissector_handle); - foreach_node_to_dissector_pair; +#define _(idx,dname) next_dissectors[idx] = find_dissector (#dname); + foreach_next_dissector; #undef _ + + /* if all else fails, dissect data as if ethernet MAC */ + next_dissectors[VLIB_NODE_PROTO_HINT_NONE] = + next_dissectors [VLIB_NODE_PROTO_HINT_ETHERNET]; } void proto_reg_handoff_vpp(void) { vpp_dissector_handle = find_dissector("vpp"); + vpp_metadata_dissector_handle = find_dissector("vppMetadata"); vpp_opaque_dissector_handle = find_dissector("vppOpaque"); + vpp_opaque2_dissector_handle = find_dissector("vppOpaque2"); vpp_trace_dissector_handle = find_dissector("vppTrace"); dissector_add_uint("wtap_encap", WTAP_ENCAP_USER13, vpp_dissector_handle); } |