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70 lines
2.4 KiB
Plaintext
70 lines
2.4 KiB
Plaintext
/*
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* BIRD -- Linux Netlink Configuration
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*
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* (c) 1999--2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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CF_HDR
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CF_DECLS
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CF_KEYWORDS(KERNEL, TABLE, METRIC, NETLINK, RX, BUFFER,
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KRT_LOCK_MTU, KRT_LOCK_WINDOW, KRT_LOCK_RTT, KRT_LOCK_RTTVAR,
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KRT_LOCK_SSTRESH, KRT_LOCK_CWND, KRT_LOCK_ADVMSS, KRT_LOCK_REORDERING,
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KRT_LOCK_HOPLIMIT, KRT_LOCK_RTO_MIN, KRT_FEATURE_ECN, KRT_FEATURE_ALLFRAG)
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%type <fab> attr_bit
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CF_GRAMMAR
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kern_proto: kern_proto kern_sys_item ';' ;
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kern_sys_item:
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KERNEL TABLE expr { THIS_KRT->sys.table_id = $3; }
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| METRIC expr { THIS_KRT->sys.metric = $2; }
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| NETLINK RX BUFFER expr { THIS_KRT->sys.netlink_rx_buffer = $4; }
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;
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/* Bits of EA_KRT_LOCK, based on RTAX_* constants */
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attr_bit: KRT_LOCK_MTU { $$ = f_new_dynamic_attr_bit(2, "krt_lock"); } ;
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attr_bit: KRT_LOCK_WINDOW { $$ = f_new_dynamic_attr_bit(3, "krt_lock"); } ;
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attr_bit: KRT_LOCK_RTT { $$ = f_new_dynamic_attr_bit(4, "krt_lock"); } ;
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attr_bit: KRT_LOCK_RTTVAR { $$ = f_new_dynamic_attr_bit(5, "krt_lock"); } ;
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attr_bit: KRT_LOCK_SSTRESH { $$ = f_new_dynamic_attr_bit(6, "krt_lock"); } ;
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attr_bit: KRT_LOCK_CWND { $$ = f_new_dynamic_attr_bit(7, "krt_lock"); } ;
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attr_bit: KRT_LOCK_ADVMSS { $$ = f_new_dynamic_attr_bit(8, "krt_lock"); } ;
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attr_bit: KRT_LOCK_REORDERING { $$ = f_new_dynamic_attr_bit(9, "krt_lock"); } ;
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attr_bit: KRT_LOCK_HOPLIMIT { $$ = f_new_dynamic_attr_bit(10, "krt_lock"); } ;
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attr_bit: KRT_LOCK_RTO_MIN { $$ = f_new_dynamic_attr_bit(13, "krt_lock"); } ;
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/* Bits of EA_KRT_FEATURES */
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attr_bit: KRT_FEATURE_ECN { $$ = f_new_dynamic_attr_bit(0, "krt_features"); } ;
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attr_bit: KRT_FEATURE_ALLFRAG { $$ = f_new_dynamic_attr_bit(3, "krt_features"); } ;
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/* Getting attribute bits (moved here to not confuse Bison on *BSD) */
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term:
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attr_bit {
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struct f_inst *c = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = (1U << $1.bit)});
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$$ = f_new_inst(FI_EQ, c, f_new_inst(FI_BITAND, f_new_inst(FI_EA_GET, $1.class), c));
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}
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;
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/* Setting attribute bits (moved here to not confuse Bison on *BSD) */
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cmd:
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attr_bit '=' term ';' {
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$$ = f_new_inst(FI_CONDITION, $3,
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f_generate_complex_default(FI_BITOR, $1.class,
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f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = (1U << $1.bit)}), 0),
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f_generate_complex_default(FI_BITAND, $1.class,
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f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = ~(1U << $1.bit)}), 0)
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);
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}
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;
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CF_CODE
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CF_END
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