diff options
Diffstat (limited to 'src/parser_bison.y')
| -rw-r--r-- | src/parser_bison.y | 80 |
1 files changed, 61 insertions, 19 deletions
diff --git a/src/parser_bison.y b/src/parser_bison.y index 26060985..fca79132 100644 --- a/src/parser_bison.y +++ b/src/parser_bison.y @@ -187,6 +187,10 @@ int nft_lex(void *, void *, void *); struct position_spec position_spec; struct prio_spec prio_spec; struct limit_rate limit_rate; + struct tcp_kind_field { + uint16_t kind; /* must allow > 255 for SACK1, 2.. hack */ + uint8_t field; + } tcp_kind_field; } %token TOKEN_EOF 0 "end of file" @@ -873,7 +877,10 @@ int nft_lex(void *, void *, void *); %type <expr> tcp_hdr_expr %destructor { expr_free($$); } tcp_hdr_expr %type <val> tcp_hdr_field -%type <val> tcp_hdr_option_type tcp_hdr_option_field +%type <val> tcp_hdr_option_type +%type <val> tcp_hdr_option_sack +%type <val> tcpopt_field_maxseg tcpopt_field_sack tcpopt_field_tsopt tcpopt_field_window +%type <tcp_kind_field> tcp_hdr_option_kind_and_field %type <expr> boolean_expr %destructor { expr_free($$); } boolean_expr @@ -5477,15 +5484,15 @@ tcp_hdr_expr : TCP tcp_hdr_field { $$ = payload_expr_alloc(&@$, &proto_tcp, $2); } - | TCP OPTION tcp_hdr_option_type tcp_hdr_option_field - { - $$ = tcpopt_expr_alloc(&@$, $3, $4); - } | TCP OPTION tcp_hdr_option_type { $$ = tcpopt_expr_alloc(&@$, $3, TCPOPT_COMMON_KIND); $$->exthdr.flags = NFT_EXTHDR_F_PRESENT; } + | TCP OPTION tcp_hdr_option_kind_and_field + { + $$ = tcpopt_expr_alloc(&@$, $3.kind, $3.field); + } | TCP OPTION AT tcp_hdr_option_type COMMA NUM COMMA NUM { $$ = tcpopt_expr_alloc(&@$, $4, 0); @@ -5505,19 +5512,49 @@ tcp_hdr_field : SPORT { $$ = TCPHDR_SPORT; } | URGPTR { $$ = TCPHDR_URGPTR; } ; -tcp_hdr_option_type : EOL { $$ = TCPOPT_KIND_EOL; } - | NOP { $$ = TCPOPT_KIND_NOP; } - | MSS { $$ = TCPOPT_KIND_MAXSEG; } - | WINDOW { $$ = TCPOPT_KIND_WINDOW; } - | SACK_PERM { $$ = TCPOPT_KIND_SACK_PERMITTED; } - | SACK { $$ = TCPOPT_KIND_SACK; } +tcp_hdr_option_kind_and_field : MSS tcpopt_field_maxseg + { + struct tcp_kind_field kind_field = { .kind = TCPOPT_KIND_MAXSEG, .field = $2 }; + $$ = kind_field; + } + | tcp_hdr_option_sack tcpopt_field_sack + { + struct tcp_kind_field kind_field = { .kind = $1, .field = $2 }; + $$ = kind_field; + } + | WINDOW tcpopt_field_window + { + struct tcp_kind_field kind_field = { .kind = TCPOPT_KIND_WINDOW, .field = $2 }; + $$ = kind_field; + } + | TIMESTAMP tcpopt_field_tsopt + { + struct tcp_kind_field kind_field = { .kind = TCPOPT_KIND_TIMESTAMP, .field = $2 }; + $$ = kind_field; + } + | tcp_hdr_option_type LENGTH + { + struct tcp_kind_field kind_field = { .kind = $1, .field = TCPOPT_COMMON_LENGTH }; + $$ = kind_field; + } + ; + +tcp_hdr_option_sack : SACK { $$ = TCPOPT_KIND_SACK; } | SACK0 { $$ = TCPOPT_KIND_SACK; } | SACK1 { $$ = TCPOPT_KIND_SACK1; } | SACK2 { $$ = TCPOPT_KIND_SACK2; } | SACK3 { $$ = TCPOPT_KIND_SACK3; } - | ECHO { $$ = TCPOPT_KIND_ECHO; } - | TIMESTAMP { $$ = TCPOPT_KIND_TIMESTAMP; } - | NUM { + ; + +tcp_hdr_option_type : ECHO { $$ = TCPOPT_KIND_ECHO; } + | EOL { $$ = TCPOPT_KIND_EOL; } + | MSS { $$ = TCPOPT_KIND_MAXSEG; } + | NOP { $$ = TCPOPT_KIND_NOP; } + | SACK_PERM { $$ = TCPOPT_KIND_SACK_PERMITTED; } + | TIMESTAMP { $$ = TCPOPT_KIND_TIMESTAMP; } + | WINDOW { $$ = TCPOPT_KIND_WINDOW; } + | tcp_hdr_option_sack { $$ = $1; } + | NUM { if ($1 > 255) { erec_queue(error(&@1, "value too large"), state->msgs); YYERROR; @@ -5526,15 +5563,20 @@ tcp_hdr_option_type : EOL { $$ = TCPOPT_KIND_EOL; } } ; -tcp_hdr_option_field : LENGTH { $$ = TCPOPT_COMMON_LENGTH; } - | SIZE { $$ = TCPOPT_MAXSEG_SIZE; } - | COUNT { $$ = TCPOPT_WINDOW_COUNT; } - | LEFT { $$ = TCPOPT_SACK_LEFT; } +tcpopt_field_sack : LEFT { $$ = TCPOPT_SACK_LEFT; } | RIGHT { $$ = TCPOPT_SACK_RIGHT; } - | TSVAL { $$ = TCPOPT_TS_TSVAL; } + ; + +tcpopt_field_window : COUNT { $$ = TCPOPT_WINDOW_COUNT; } + ; + +tcpopt_field_tsopt : TSVAL { $$ = TCPOPT_TS_TSVAL; } | TSECR { $$ = TCPOPT_TS_TSECR; } ; +tcpopt_field_maxseg : SIZE { $$ = TCPOPT_MAXSEG_SIZE; } + ; + dccp_hdr_expr : DCCP dccp_hdr_field { $$ = payload_expr_alloc(&@$, &proto_dccp, $2); |