void
Deparser::deparse(Packet *pkt) const {
PHV *phv = pkt->get_phv();
BMELOG(deparser_start, *pkt, *this);
// TODO(antonin)
// this is temporary while we experiment with the debugger
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_DEPARSER | get_id());
update_checksums(pkt);
char *data = pkt->prepend(get_headers_size(*phv));
int bytes_parsed = 0;
// invalidating headers, and resetting header stacks is done in the Packet
// destructor, when the PHV is released
for (auto it = headers.begin(); it != headers.end(); ++it) {
Header &header = phv->get_header(*it);
if (header.is_valid()) {
BMELOG(deparser_emit, *pkt, *it);
header.deparse(data + bytes_parsed);
bytes_parsed += header.get_nbytes_packet();
// header.mark_invalid();
}
}
// phv->reset_header_stacks();
BMELOG(deparser_done, *pkt, *this);
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_EXIT(DBG_CTR_DEPARSER) | get_id());
}
const ControlFlowNode *
MatchActionTable::operator()(Packet *pkt) const {
// TODO(antonin)
// this is temporary while we experiment with the debugger
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_TABLE | get_id());
BMLOG_TRACE_PKT(*pkt, "Applying table '{}'", get_name());
const auto next = match_table->apply_action(pkt);
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_EXIT(DBG_CTR_TABLE) | get_id());
return next;
}
const ParseState *
ParseState::operator()(Packet *pkt, const char *data,
size_t *bytes_parsed) const {
// TODO(antonin)
// this is temporary while we experiment with the debugger
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_PARSE_STATE | get_id());
auto next_state = find_next_state(pkt, data, bytes_parsed);
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_EXIT(DBG_CTR_PARSE_STATE) | get_id());
return next_state;
}
void
Parser::parse(Packet *pkt) const {
BMELOG(parser_start, *pkt, *this);
// TODO(antonin)
// this is temporary while we experiment with the debugger
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_PARSER | get_id());
BMLOG_DEBUG_PKT(*pkt, "Parser '{}': start", get_name());
const char *data = pkt->data();
if (!init_state) return;
const ParseState *next_state = init_state;
size_t bytes_parsed = 0;
while (next_state) {
next_state = (*next_state)(pkt, data, &bytes_parsed);
BMLOG_TRACE("Bytes parsed: {}", bytes_parsed);
}
pkt->remove(bytes_parsed);
BMELOG(parser_done, *pkt, *this);
DEBUGGER_NOTIFY_CTR(
Debugger::PacketId::make(pkt->get_packet_id(), pkt->get_copy_id()),
DBG_CTR_EXIT(DBG_CTR_PARSER) | get_id());
BMLOG_DEBUG_PKT(*pkt, "Parser '{}': end", get_name());
}