summaryrefslogtreecommitdiff
path: root/filter
diff options
context:
space:
mode:
Diffstat (limited to 'filter')
-rw-r--r--filter/Makefile10
-rw-r--r--filter/decl.m491
-rw-r--r--filter/f-inst.c12
-rw-r--r--filter/filter.c2
-rw-r--r--filter/interpret.m480
-rw-r--r--filter/test.conf6
6 files changed, 90 insertions, 111 deletions
diff --git a/filter/Makefile b/filter/Makefile
index 65602ea8..9562a2ee 100644
--- a/filter/Makefile
+++ b/filter/Makefile
@@ -7,19 +7,19 @@ $(conf-y-targets) $(conf-lex-targets) $(src-o-files): $(o)inst-gen.h
M4FLAGS_FILTERS=$(filter-out -s,$(M4FLAGS))
-$(o)f-inst-interpret.c: $(s)interpret.m4 $(s)f-inst.c $(objdir)/.dir-stamp
- $(M4) $(M4FLAGS_FILTERS) -P $^ >$@
-
$(o)inst-gen.h: $(s)decl.m4 $(s)f-inst.c $(objdir)/.dir-stamp
$(M4) $(M4FLAGS_FILTERS) -DTARGET=H -P $^ >$@
$(o)inst-gen.c: $(s)decl.m4 $(s)f-inst.c $(objdir)/.dir-stamp
$(M4) $(M4FLAGS_FILTERS) -DTARGET=C -P $^ >$@
-$(o)filter.o: $(o)f-inst-interpret.c $(o)inst-gen.h
+$(o)inst-interpret.c: $(s)decl.m4 $(s)f-inst.c $(objdir)/.dir-stamp
+ $(M4) $(M4FLAGS_FILTERS) -DTARGET=I -P $^ >$@
+
+$(o)filter.o: $(o)inst-interpret.c $(o)inst-gen.h
tests_src := tree_test.c filter_test.c trie_test.c
tests_targets := $(tests_targets) $(tests-target-files)
tests_objs := $(tests_objs) $(src-o-files)
-$(call clean,inst-gen.h inst-gen.c)
+$(call clean,inst-gen.h inst-gen.c inst-interpret.c)
diff --git a/filter/decl.m4 b/filter/decl.m4
index 3033438d..bdd59f20 100644
--- a/filter/decl.m4
+++ b/filter/decl.m4
@@ -16,6 +16,7 @@ m4_divert(-1)m4_dnl
# 9 same (filter comparator)
# 1 union in struct f_inst
# 3 constructors
+# 10 interpreter
#
# Per-inst Diversions:
# 101 content of per-inst struct
@@ -24,7 +25,10 @@ m4_divert(-1)m4_dnl
# 104 dump line item content
# 105 postfixify body
# 106 comparator body
+# 107 struct f_line_item content
+# 108 interpreter body
#
+# Diversions for TARGET=I: 7xx
# Diversions for TARGET=C: 8xx
# Diversions for TARGET=H: 9xx
@@ -43,6 +47,7 @@ m4_define(FID_DUMP, `FID_ZONE(6, Dump line)')
m4_define(FID_DUMP_CALLER, `FID_ZONE(7, Dump line caller)')
m4_define(FID_POSTFIXIFY, `FID_ZONE(8, Postfixify)')
m4_define(FID_SAME, `FID_ZONE(9, Comparison)')
+m4_define(FID_INTERPRET, `FID_ZONE(10, Interpret)')
m4_define(FID_STRUCT_IN, `m4_divert(101)')
m4_define(FID_NEW_ARGS, `m4_divert(102)')
@@ -51,10 +56,14 @@ m4_define(FID_DUMP_BODY, `m4_divert(104)m4_define([[FID_DUMP_BODY_EXISTS]])')
m4_define(FID_POSTFIXIFY_BODY, `m4_divert(105)m4_define([[FID_POSTFIXIFY_BODY_EXISTS]])')
m4_define(FID_SAME_BODY, `m4_divert(106)')
m4_define(FID_LINE_IN, `m4_divert(107)')
+m4_define(FID_INTERPRET_BODY, `m4_divert(108)')
-m4_define(FID_ALL, `m4_ifdef([[FID_CURDIV]], [[m4_divert(FID_CURDIV)m4_undefine([[FID_CURDIV]])]])')
-m4_define(FID_C, `m4_ifelse(TARGET, [[C]], FID_ALL, [[m4_define(FID_CURDIV, m4_divnum)m4_divert(-1)]])')
-m4_define(FID_H, `m4_ifelse(TARGET, [[H]], FID_ALL, [[m4_define(FID_CURDIV, m4_divnum)m4_divert(-1)]])')
+m4_define(FID_ALL, `FID_INTERPRET_BODY');
+
+m4_define(FID_ALL_TARGETS, `m4_ifdef([[FID_CURDIV]], [[m4_divert(FID_CURDIV)m4_undefine([[FID_CURDIV]])]])')
+m4_define(FID_C, `m4_ifelse(TARGET, [[C]], FID_ALL_TARGETS, [[m4_define(FID_CURDIV, m4_divnum)m4_divert(-1)]])')
+m4_define(FID_I, `m4_ifelse(TARGET, [[I]], FID_ALL_TARGETS, [[m4_define(FID_CURDIV, m4_divnum)m4_divert(-1)]])')
+m4_define(FID_H, `m4_ifelse(TARGET, [[H]], FID_ALL_TARGETS, [[m4_define(FID_CURDIV, m4_divnum)m4_divert(-1)]])')
m4_define(INST_FLUSH, `m4_ifdef([[INST_NAME]], [[
@@ -101,7 +110,7 @@ m4_undefine([[FID_DUMP_BODY_EXISTS]])
m4_undivert(104)
#undef item
}
-FID_ALL
+FID_ALL_TARGETS
FID_POSTFIXIFY
case INST_NAME(): {
@@ -125,10 +134,23 @@ m4_undivert(106)
#undef f2
break;
+FID_INTERPRET
+case INST_NAME():
+#define whati (&(what->i_]]INST_NAME()[[))
+m4_ifelse(m4_eval(INST_INVAL() > 0), 1, [[if (vstk.cnt < INST_INVAL()) runtime("Stack underflow"); vstk.cnt -= INST_INVAL(); ]])
+m4_undivert(108)
+#undef whati
+break;
+
FID_END
]])')
-m4_define(INST, `INST_FLUSH()m4_define([[INST_NAME]], [[$1]])')
+m4_define(INST, `m4_dnl
+INST_FLUSH()m4_dnl
+m4_define([[INST_NAME]], [[$1]])m4_dnl
+m4_define([[INST_INVAL]], [[$2]])m4_dnl
+FID_ALL() m4_dnl
+')
m4_dnl FID_MEMBER call:
m4_dnl type
@@ -137,6 +159,7 @@ m4_dnl name in f_line_item
m4_dnl comparator for same
m4_dnl dump format string
m4_dnl dump format args
+m4_dnl interpreter body
m4_define(FID_MEMBER, `m4_dnl
FID_LINE_IN
$1 $2;
@@ -158,9 +181,13 @@ m4_ifelse($5,,,[[
FID_DUMP_BODY
debug("%s$5\n", INDENT, $6);
]])
-FID_END')
+m4_ifelse($7,,,[[
+FID_INTERPRET_BODY
+$7
+]])
+FID_ALL')
-m4_define(ARG, `
+m4_define(ARG_ANY, `
FID_STRUCT_IN
const struct f_inst * f$1;
FID_NEW_ARGS
@@ -169,9 +196,24 @@ FID_NEW_BODY
what->f$1 = f$1;
for (const struct f_inst *child = f$1; child; child = child->next) what_->size += child->size;
FID_POSTFIXIFY_BODY
-pos = postfixify(dest, what->f$1, pos);
-FID_END')
-m4_define(ARG_ANY, `ARG($@)')
+pos = postfixify(dest, what->f$1, pos);m4_dnl
+FID_ALL()')
+
+m4_define(ARG, `ARG_ANY($1)
+FID_INTERPRET_BODY
+if (v$1.type != $2) runtime("Argument $1 of instruction %s must be of type $2, got 0x%02x", f_instruction_name(what->fi_code), v$1.type)m4_dnl
+FID_ALL()')
+
+m4_define(LINEX, `FID_INTERPRET_BODY
+do {
+ estk.item[estk.cnt].pos = 0;
+ estk.item[estk.cnt].line = $1;
+ estk.item[estk.cnt].ventry = vstk.cnt;
+ estk.item[estk.cnt].emask = 0;
+ estk.cnt++;
+} while (0)m4_dnl
+FID_ALL()')
+
m4_define(LINE, `
FID_LINE_IN
const struct f_line * fl$1;
@@ -187,17 +229,26 @@ FID_POSTFIXIFY_BODY
item->fl$1 = f_postfixify(what->f$1);
FID_SAME_BODY
if (!f_same(f1->fl$1, f2->fl$1)) return 0;
-FID_END')
+FID_INTERPRET_BODY
+do { if (whati->fl$1) {
+ LINEX(whati->fl$1);
+} } while(0)m4_dnl
+FID_ALL()')
+
+m4_define(RESULT_OK, `FID_INTERPRET_BODY()vstk.cnt++FID_ALL()')
+m4_define(RESULT, `RESULT_VAL([[ (struct f_val) { .type = $1, .val.$2 = $3 } ]])')
+m4_define(RESULT_VAL, `FID_INTERPRET_BODY()do { res = $1; RESULT_OK; } while (0)FID_ALL()')
+
m4_define(SYMBOL, `FID_MEMBER(const struct symbol *, sym, sym,
-[[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], symbol %s, item->sym->name)')
-m4_define(VAL, `FID_MEMBER(struct f_val $1, val, val m4_ifelse($1,,,[0]), [[!val_same(&f1->val, &f2->val)]], value %s, val_dump(&item->val))')
-m4_define(FRET, `FID_MEMBER(enum filter_return, fret, fret, f1->fret != f2->fret, %s, filter_return_str(item->fret))')
-m4_define(ECS, `FID_MEMBER(enum ec_subtype, ecs, ecs, f1->ecs != f2->ecs, ec subtype %s, ec_subtype_str(item->ecs))')
-m4_define(RTC, `FID_MEMBER(const struct rtable_config *, rtc, rtc, [[strcmp(f1->rtc->name, f2->rtc->name)]], route table %s, item->rtc->name)')
-m4_define(STATIC_ATTR, `FID_MEMBER(struct f_static_attr, sa, sa, f1->sa.sa_code != f2->sa.sa_code)')
-m4_define(DYNAMIC_ATTR, `FID_MEMBER(struct f_dynamic_attr, da, da, f1->da.ea_code != f2->da.ea_code)')
+[[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], symbol %s, item->sym->name, const struct symbol *sym = whati->sym)')
+m4_define(VAL, `FID_MEMBER(struct f_val $1, val, val m4_ifelse($1,,,[0]), [[!val_same(&f1->val, &f2->val)]], value %s, val_dump(&item->val),)')
+m4_define(FRET, `FID_MEMBER(enum filter_return, fret, fret, f1->fret != f2->fret, %s, filter_return_str(item->fret), enum filter_return fret = whati->fret)')
+m4_define(ECS, `FID_MEMBER(enum ec_subtype, ecs, ecs, f1->ecs != f2->ecs, ec subtype %s, ec_subtype_str(item->ecs), enum ec_subtype ecs = whati->ecs)')
+m4_define(RTC, `FID_MEMBER(const struct rtable_config *, rtc, rtc, [[strcmp(f1->rtc->name, f2->rtc->name)]], route table %s, item->rtc->name, struct rtable *table = whati->rtc->table)')
+m4_define(STATIC_ATTR, `FID_MEMBER(struct f_static_attr, sa, sa, f1->sa.sa_code != f2->sa.sa_code,,, struct f_static_attr sa = whati->sa)')
+m4_define(DYNAMIC_ATTR, `FID_MEMBER(struct f_dynamic_attr, da, da, f1->da.ea_code != f2->da.ea_code,,, struct f_dynamic_attr da = whati->da)')
m4_define(COUNT, `FID_MEMBER(uint, count, count, f1->count != f2->count, number %u, item->count)')
-m4_define(TREE, `FID_MEMBER(const struct f_tree *, tree, tree, [[!same_tree(f1->tree, f2->tree)]], tree %p, item->tree)')
+m4_define(TREE, `FID_MEMBER(const struct f_tree *, tree, tree, [[!same_tree(f1->tree, f2->tree)]], tree %p, item->tree, const struct f_tree *tree = whati->tree)')
m4_define(STRING, `FID_MEMBER(const char *, s, s, [[strcmp(f1->s, f2->s)]], string \"%s\", item->s)')
m4_define(FID_WR_PUT_LIST)
@@ -210,6 +261,8 @@ m4_define(FID_WR_DIRECT, `m4_define([[FID_WR_CUR_DIRECT]],$1)m4_ifelse(TARGET,[[
m4_dnl m4_define(FID_WR_CUR_DIRECT,m4_ifelse(TARGET,`C',800,TARGET,`H',900,m4_errprint(`Bad TARGET: 'TARGET)m4_m4exit(1)))
m4_changequote([[,]])
+FID_WR_DIRECT(700,I)
+FID_WR_PUT(10)
FID_WR_DIRECT(800,C)
#include "nest/bird.h"
#include "filter/filter.h"
diff --git a/filter/f-inst.c b/filter/f-inst.c
index 27a4ab88..8505534a 100644
--- a/filter/f-inst.c
+++ b/filter/f-inst.c
@@ -117,7 +117,7 @@
dyn++;
what->count = len;
- FID_END
+ FID_ALL
if (vstk.cnt < whati->count) /* TODO: make this check systematic */
runtime("Construction of BGP path mask from %u elements must have at least that number of elements", whati->count);
@@ -259,7 +259,7 @@
if (!val_same(&(f1->val), &(f2->val))) return 0;
FID_DUMP_BODY
debug("%svalue %s\n", INDENT, val_dump(&item->val));
- FID_END
+ FID_ALL
res = whati->val;
RESULT_OK;
@@ -289,7 +289,7 @@
default:
bug("Symbol %s of type %d doesn't reference a value", item->sym->name, item->sym->class);
}
- FID_END
+ FID_ALL
res = *whati->valp;
RESULT_OK;
@@ -309,7 +309,7 @@
FID_POSTFIXIFY_BODY
{
uint opos = pos;
- FID_END
+ FID_ALL
ARG_ANY(1);
@@ -317,7 +317,7 @@
if (opos < pos)
dest->items[pos].flags |= FIF_PRINTED;
}
- FID_END
+ FID_ALL
FRET(2);
@@ -773,7 +773,7 @@
if (strcmp(f1->sym->name, f2->sym->name)) return 0;
if (!f_same(f1->args, f2->args)) return 0;
if (!f_same(f1->body, f2->body)) return 0;
- FID_END
+ FID_ALL
/* First push the body on stack */
LINEX(whati->body);
diff --git a/filter/filter.c b/filter/filter.c
index 8db5119b..ee5d5426 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -192,7 +192,7 @@ interpret(struct filter_state *fs, const struct f_line *line, struct f_val *val)
#define ACCESS_RTE do { if (!fs->rte) runtime("No route to access"); } while (0)
#define ACCESS_EATTRS do { if (!fs->eattrs) f_cache_eattrs(fs); } while (0)
-#include "filter/f-inst-interpret.c"
+#include "filter/inst-interpret.c"
#undef res
#undef v1
#undef v2
diff --git a/filter/interpret.m4 b/filter/interpret.m4
deleted file mode 100644
index ea91e74e..00000000
--- a/filter/interpret.m4
+++ /dev/null
@@ -1,80 +0,0 @@
-m4_divert(-1)m4_dnl
-#
-# BIRD -- Generator of Filter Instructions
-#
-# (c) 2018 Maria Matejka <mq@jmq.cz>
-#
-# Can be freely distributed and used under the terms of the GNU GPL.
-#
-
-# Common aliases
-m4_define(DNL, `m4_dnl')
-
-m4_define(INST_FLUSH, `m4_ifdef([[INST_NAME]], [[
-m4_divert(1)
-case INST_NAME():
-#define whati (&(what->i_]]INST_NAME()[[))
-m4_ifelse(m4_eval(INST_INVAL() > 0), 1, [[if (vstk.cnt < INST_INVAL()) runtime("Stack underflow"); vstk.cnt -= INST_INVAL(); ]])
-m4_undivert(2)
-#undef whati
-break;
-m4_divert(-1)
-]])')
-
-m4_define(INST, `INST_FLUSH()m4_define([[INST_NAME]], [[$1]])m4_define([[INST_INVAL]], [[$2]])m4_divert(2)')
-
-m4_define(ARG, `if (v$1.type != $2) runtime("Argument $1 of instruction %s must be of type $2, got 0x%02x", f_instruction_name(what->fi_code), v$1.type)')
-
-m4_define(RESULT_OK, `vstk.cnt++')
-m4_define(RESULT, `RESULT_VAL([[ (struct f_val) { .type = $1, .val.$2 = $3 } ]])')
-m4_define(RESULT_VAL, `do { res = $1; RESULT_OK; } while (0)')
-
-m4_define(LINEX, `do {
- estk.item[estk.cnt].pos = 0;
- estk.item[estk.cnt].line = $1;
- estk.item[estk.cnt].ventry = vstk.cnt;
- estk.item[estk.cnt].emask = 0;
- estk.cnt++;
-} while (0)')
-
-m4_define(LINE, `do {
- if (whati->fl$1) {
- estk.item[estk.cnt].pos = 0;
- estk.item[estk.cnt].line = whati->fl$1;
- estk.item[estk.cnt].ventry = vstk.cnt;
- estk.item[estk.cnt].emask = 0;
- estk.cnt++;
- }
-} while (0)')
-
-m4_define(ARG_ANY, `')
-
-m4_define(SYMBOL, `const struct symbol *sym = whati->sym')
-
-m4_define(FRET, `enum filter_return fret = whati->fret')
-m4_define(ECS, `enum ec_subtype ecs = whati->ecs')
-m4_define(RTC, `struct rtable *table = whati->rtc->table')
-m4_define(STATIC_ATTR, `struct f_static_attr sa = whati->sa')
-m4_define(DYNAMIC_ATTR, `struct f_dynamic_attr da = whati->da')
-m4_define(TREE, `const struct f_tree *tree = whati->tree')
-m4_define(STRING, `')
-m4_define(COUNT, `')
-m4_define(SAME, `')
-m4_define(FID_STRUCT_IN, `m4_divert(-1)')
-m4_define(FID_LINE_IN, `m4_divert(-1)')
-m4_define(FID_NEW_ARGS, `m4_divert(-1)')
-m4_define(FID_NEW_BODY, `m4_divert(-1)')
-m4_define(FID_POSTFIXIFY_BODY, `m4_divert(-1)')
-m4_define(FID_SAME_BODY, `m4_divert(-1)')
-m4_define(FID_DUMP_BODY, `m4_divert(-1)')
-m4_define(FID_END, `m4_divert(2)')
-
-m4_m4wrap(`
-INST_FLUSH()
-m4_divert(0)DNL
-m4_undivert(1)
-default: bug( "Unknown instruction %d (%c)", what->fi_code, what->fi_code & 0xff);
-')
-
-m4_changequote([[,]])
-
diff --git a/filter/test.conf b/filter/test.conf
index dc47eb7d..b9f1b3aa 100644
--- a/filter/test.conf
+++ b/filter/test.conf
@@ -1381,3 +1381,9 @@ protocol static
vpn4 { table v4; import filter vpn_filter; };
route 0:1:2 10.1.10.0/24 unreachable;
}
+
+protocol static
+{
+ ipv6 { import where false; };
+ route fd01::/48 unreachable;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 04:26:12 +0000