Preference moved to RTA and set explicitly in protocols
This commit is contained in:
Maria Matejka
Maria Matejka
parent
d5a32563df
commit
eb937358c0
20 changed files with 59 additions and 73 deletions
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@ -248,10 +248,6 @@ assert_assign(struct f_lval *lval, struct f_inst *expr, const char *start, const
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setter = f_new_inst(FI_VAR_SET, expr, lval->sym);
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getter = f_new_inst(FI_VAR_GET, lval->sym);
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break;
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case F_LVAL_PREFERENCE:
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setter = f_new_inst(FI_PREF_SET, expr);
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getter = f_new_inst(FI_PREF_GET);
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break;
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case F_LVAL_SA:
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setter = f_new_inst(FI_RTA_SET, expr, lval->sa);
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getter = f_new_inst(FI_RTA_GET, lval->sa);
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@ -757,6 +753,7 @@ static_attr:
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| IFNAME { $$ = f_new_static_attr(T_STRING, SA_IFNAME, 0); }
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| IFINDEX { $$ = f_new_static_attr(T_INT, SA_IFINDEX, 1); }
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| WEIGHT { $$ = f_new_static_attr(T_INT, SA_WEIGHT, 0); }
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| PREFERENCE { $$ = f_new_static_attr(T_INT, SA_PREF, 0); }
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| GW_MPLS { $$ = f_new_static_attr(T_INT, SA_GW_MPLS, 0); }
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;
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@ -783,8 +780,6 @@ term:
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| constant { $$ = $1; }
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| constructor { $$ = $1; }
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| PREFERENCE { $$ = f_new_inst(FI_PREF_GET); }
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| static_attr { $$ = f_new_inst(FI_RTA_GET, $1); }
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| dynamic_attr { $$ = f_new_inst(FI_EA_GET, $1); }
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@ -877,9 +872,6 @@ cmd:
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cf_error( "This static attribute is read-only.");
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$$ = f_new_inst(FI_RTA_SET, $3, $1);
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}
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| PREFERENCE '=' term ';' {
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$$ = f_new_inst(FI_PREF_SET, $3);
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}
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| UNSET '(' dynamic_attr ')' ';' {
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$$ = f_new_inst(FI_EA_UNSET, $3);
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}
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@ -922,7 +914,6 @@ get_cf_position:
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lvalue:
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CF_SYM_KNOWN { cf_assert_symbol($1, SYM_VARIABLE); $$ = (struct f_lval) { .type = F_LVAL_VARIABLE, .sym = $1 }; }
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| PREFERENCE { $$ = (struct f_lval) { .type = F_LVAL_PREFERENCE }; }
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| static_attr { $$ = (struct f_lval) { .type = F_LVAL_SA, .sa = $1 }; }
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| dynamic_attr { $$ = (struct f_lval) { .type = F_LVAL_EA, .da = $1 }; };
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@ -100,6 +100,7 @@ enum f_sa_code {
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SA_IFNAME,
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SA_IFINDEX,
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SA_WEIGHT,
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SA_PREF,
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SA_GW_MPLS,
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} PACKED;
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@ -533,6 +533,7 @@
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case SA_IFNAME: RESULT(sa.f_type, s, rta->nh.iface ? rta->nh.iface->name : ""); break;
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case SA_IFINDEX: RESULT(sa.f_type, i, rta->nh.iface ? rta->nh.iface->index : 0); break;
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case SA_WEIGHT: RESULT(sa.f_type, i, rta->nh.weight + 1); break;
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case SA_PREF: RESULT(sa.f_type, i, rta->pref); break;
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case SA_GW_MPLS: RESULT(sa.f_type, i, rta->nh.labels ? rta->nh.label[0] : MPLS_NULL); break;
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default:
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@ -637,6 +638,10 @@
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}
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break;
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case SA_PREF:
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rta->pref = v1.val.i;
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break;
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default:
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bug("Invalid static attribute access (%u/%u)", sa.f_type, sa.sa_code);
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}
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@ -804,20 +809,6 @@
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}
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}
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INST(FI_PREF_GET, 0, 1) {
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ACCESS_RTE;
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RESULT(T_INT, i, (*fs->rte)->pref);
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}
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INST(FI_PREF_SET, 1, 0) {
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ACCESS_RTE;
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ARG(1,T_INT);
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if (v1.val.i > 0xFFFF)
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runtime( "Setting preference value out of bounds" );
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f_rte_cow(fs);
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(*fs->rte)->pref = v1.val.i;
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}
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INST(FI_LENGTH, 1, 1) { /* Get length of */
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ARG_ANY(1);
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switch(v1.type) {
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@ -215,6 +215,12 @@ mem_hash_mix(u64 *h, const void *p, uint s)
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*h = *h * multiplier + pp[i];
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}
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static inline void
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mem_hash_mix_num(u64 *h, u64 val)
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{
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mem_hash_mix(h, &val, sizeof(val));
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}
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static inline uint
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mem_hash_value(u64 *h)
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{
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19
nest/route.h
19
nest/route.h
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@ -241,7 +241,6 @@ typedef struct rte {
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u32 id; /* Table specific route id */
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byte flags; /* Flags (REF_...) */
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byte pflags; /* Protocol-specific flags */
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word pref; /* Route preference */
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btime lastmod; /* Last modified */
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union { /* Protocol-dependent data (metrics etc.) */
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#ifdef CONFIG_RIP
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@ -446,10 +445,11 @@ typedef struct rta {
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struct hostentry *hostentry; /* Hostentry for recursive next-hops */
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ip_addr from; /* Advertising router */
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u32 igp_metric; /* IGP metric to next hop (for iBGP routes) */
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u8 source; /* Route source (RTS_...) */
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u8 scope; /* Route scope (SCOPE_... -- see ip.h) */
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u8 dest; /* Route destination type (RTD_...) */
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u8 aflags;
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u16 cached:1; /* Are attributes cached? */
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u16 source:7; /* Route source (RTS_...) */
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u16 scope:4; /* Route scope (SCOPE_... -- see ip.h) */
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u16 dest:4; /* Route destination type (RTD_...) */
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word pref;
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struct nexthop nh; /* Next hop */
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} rta;
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@ -471,11 +471,6 @@ typedef struct rta {
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#define RTS_PERF 15 /* Perf checker */
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#define RTS_MAX 16
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#define RTC_UNICAST 0
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#define RTC_BROADCAST 1
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#define RTC_MULTICAST 2
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#define RTC_ANYCAST 3 /* IPv6 Anycast */
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#define RTD_NONE 0 /* Undefined next hop */
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#define RTD_UNICAST 1 /* Next hop is neighbor router */
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#define RTD_BLACKHOLE 2 /* Silently drop packets */
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@ -483,8 +478,6 @@ typedef struct rta {
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#define RTD_PROHIBIT 4 /* Administratively prohibited */
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#define RTD_MAX 5
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#define RTAF_CACHED 1 /* This is a cached rta */
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#define IGP_METRIC_UNKNOWN 0x80000000 /* Default igp_metric used when no other
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protocol-specific metric is availabe */
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@ -673,7 +666,7 @@ void rta_init(void);
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static inline size_t rta_size(const rta *a) { return sizeof(rta) + sizeof(u32)*a->nh.labels; }
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#define RTA_MAX_SIZE (sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK)
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rta *rta_lookup(rta *); /* Get rta equivalent to this one, uc++ */
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static inline int rta_is_cached(rta *r) { return r->aflags & RTAF_CACHED; }
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static inline int rta_is_cached(rta *r) { return r->cached; }
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static inline rta *rta_clone(rta *r) { r->uc++; return r; }
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void rta__free(rta *r);
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static inline void rta_free(rta *r) { if (r && !--r->uc) rta__free(r); }
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@ -1104,13 +1104,15 @@ rta_hash(rta *a)
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u64 h;
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mem_hash_init(&h);
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#define MIX(f) mem_hash_mix(&h, &(a->f), sizeof(a->f));
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#define BMIX(f) mem_hash_mix_num(&h, a->f);
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MIX(src);
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MIX(hostentry);
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MIX(from);
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MIX(igp_metric);
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MIX(source);
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MIX(scope);
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MIX(dest);
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BMIX(source);
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BMIX(scope);
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BMIX(dest);
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MIX(pref);
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#undef MIX
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return mem_hash_value(&h) ^ nexthop_hash(&(a->nh)) ^ ea_hash(a->eattrs);
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@ -1198,7 +1200,7 @@ rta_lookup(rta *o)
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rta *r;
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uint h;
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ASSERT(!(o->aflags & RTAF_CACHED));
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ASSERT(!o->cached);
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if (o->eattrs)
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ea_normalize(o->eattrs);
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@ -1209,7 +1211,7 @@ rta_lookup(rta *o)
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r = rta_copy(o);
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r->hash_key = h;
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r->aflags = RTAF_CACHED;
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r->cached = 1;
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rt_lock_source(r->src);
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rt_lock_hostentry(r->hostentry);
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rta_insert(r);
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@ -1223,7 +1225,7 @@ rta_lookup(rta *o)
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void
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rta__free(rta *a)
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{
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ASSERT(rta_cache_count && (a->aflags & RTAF_CACHED));
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ASSERT(rta_cache_count && a->cached);
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rta_cache_count--;
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*a->pprev = a->next;
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if (a->next)
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@ -1233,7 +1235,7 @@ rta__free(rta *a)
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if (a->nh.next)
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nexthop_free(a->nh.next);
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ea_free(a->eattrs);
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a->aflags = 0; /* Poison the entry */
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a->cached = 0;
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sl_free(rta_slab(a), a);
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}
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@ -1248,7 +1250,7 @@ rta_do_cow(rta *o, linpool *lp)
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memcpy(*nhn, nho, nexthop_size(nho));
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nhn = &((*nhn)->next);
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}
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r->aflags = 0;
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r->cached = 0;
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r->uc = 0;
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return r;
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}
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@ -1268,10 +1270,10 @@ rta_dump(rta *a)
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"RTS_OSPF_EXT2", "RTS_BGP", "RTS_PIPE", "RTS_BABEL" };
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static char *rtd[] = { "", " DEV", " HOLE", " UNREACH", " PROHIBIT" };
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debug("p=%s uc=%d %s %s%s h=%04x",
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a->src->proto->name, a->uc, rts[a->source], ip_scope_text(a->scope),
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debug("p=%s pref=%d uc=%d %s %s%s h=%04x",
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a->src->proto->name, a->pref, a->uc, rts[a->source], ip_scope_text(a->scope),
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rtd[a->dest], a->hash_key);
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if (!(a->aflags & RTAF_CACHED))
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if (!a->cached)
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debug(" !CACHED");
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debug(" <-%I", a->from);
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if (a->dest == RTD_UNICAST)
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@ -84,6 +84,7 @@ dev_ifa_notify(struct proto *P, uint flags, struct ifa *ad)
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rta a0 = {
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.src = src,
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.pref = c->preference,
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.source = RTS_DEVICE,
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.scope = SCOPE_UNIVERSE,
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.dest = RTD_UNICAST,
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@ -60,7 +60,7 @@ rt_show_rte(struct cli *c, byte *ia, rte *e, struct rt_show_data *d, int primary
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if (get_route_info)
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get_route_info(e, info);
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else
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bsprintf(info, " (%d)", e->pref);
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bsprintf(info, " (%d)", a->pref);
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if (d->last_table != d->tab)
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rt_show_table(c, d);
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@ -286,7 +286,6 @@ rte_get_temp(rta *a)
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e->attrs = a;
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e->id = 0;
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e->flags = 0;
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e->pref = 0;
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return e;
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}
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@ -533,9 +532,9 @@ rte_better(rte *new, rte *old)
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if (!rte_is_valid(new))
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return 0;
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if (new->pref > old->pref)
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if (new->attrs->pref > old->attrs->pref)
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return 1;
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if (new->pref < old->pref)
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if (new->attrs->pref < old->attrs->pref)
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return 0;
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if (new->attrs->src->proto->proto != old->attrs->src->proto->proto)
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{
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@ -559,7 +558,7 @@ rte_mergable(rte *pri, rte *sec)
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if (!rte_is_valid(pri) || !rte_is_valid(sec))
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return 0;
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if (pri->pref != sec->pref)
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if (pri->attrs->pref != sec->attrs->pref)
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return 0;
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if (pri->attrs->src->proto->proto != sec->attrs->src->proto->proto)
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@ -1080,7 +1079,6 @@ rte_same(rte *x, rte *y)
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return
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x->attrs == y->attrs &&
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x->pflags == y->pflags &&
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x->pref == y->pref &&
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(!x->attrs->src->proto->rte_same || x->attrs->src->proto->rte_same(x, y)) &&
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rte_is_filtered(x) == rte_is_filtered(y);
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}
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@ -1469,9 +1467,6 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
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new->net = nn;
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new->sender = c;
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if (!new->pref)
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new->pref = c->preference;
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stats->imp_updates_received++;
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if (!rte_validate(new))
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{
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@ -1710,7 +1705,7 @@ rte_dump(rte *e)
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{
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net *n = e->net;
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debug("%-1N ", n->n.addr);
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debug("PF=%02x pref=%d ", e->pflags, e->pref);
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debug("PF=%02x ", e->pflags);
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rta_dump(e->attrs);
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if (e->attrs->src->proto->proto->dump_attrs)
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e->attrs->src->proto->proto->dump_attrs(e);
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@ -2222,7 +2217,7 @@ rt_next_hop_update_rte(rtable *tab UNUSED, rte *old)
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memcpy(mls.stack, &a->nh.label[a->nh.labels - mls.len], mls.len * sizeof(u32));
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rta_apply_hostentry(a, old->attrs->hostentry, &mls);
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a->aflags = 0;
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a->cached = 0;
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rte *e = sl_alloc(rte_slab);
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memcpy(e, old, sizeof(rte));
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@ -2576,9 +2571,6 @@ rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *sr
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{
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net = net_get(tab, n);
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if (!new->pref)
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new->pref = c->preference;
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if (!rta_is_cached(new->attrs))
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new->attrs = rta_lookup(new->attrs);
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}
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@ -645,6 +645,7 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
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.source = RTS_BABEL,
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.scope = SCOPE_UNIVERSE,
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.dest = RTD_UNICAST,
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.pref = c->preference,
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.from = r->neigh->addr,
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.nh.gw = r->next_hop,
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.nh.iface = r->neigh->ifa->iface,
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@ -676,13 +677,13 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
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.source = RTS_BABEL,
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.scope = SCOPE_UNIVERSE,
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.dest = RTD_UNREACHABLE,
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.pref = 1,
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};
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rta *a = rta_lookup(&a0);
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rte *rte = rte_get_temp(a);
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memset(&rte->u.babel, 0, sizeof(rte->u.babel));
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rte->pflags = 0;
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rte->pref = 1;
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e->unreachable = 1;
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rte_update2(c, e->n.addr, rte, p->p.main_source);
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@ -2010,7 +2011,7 @@ babel_dump(struct proto *P)
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static void
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babel_get_route_info(rte *rte, byte *buf)
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{
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buf += bsprintf(buf, " (%d/%d) [%lR]", rte->pref, rte->u.babel.metric, rte->u.babel.router_id);
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buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref, rte->u.babel.metric, rte->u.babel.router_id);
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}
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static int
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@ -2117,7 +2117,7 @@ bgp_rte_mergable(rte *pri, rte *sec)
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static inline int
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same_group(rte *r, u32 lpref, u32 lasn)
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{
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return (r->pref == lpref) && (bgp_get_neighbor(r) == lasn);
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return (r->attrs->pref == lpref) && (bgp_get_neighbor(r) == lasn);
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}
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static inline int
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@ -2132,7 +2132,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
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{
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rte *r, *s;
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rte *key = new ? new : old;
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u32 lpref = key->pref;
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u32 lpref = key->attrs->pref;
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u32 lasn = bgp_get_neighbor(key);
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int old_suppressed = old ? old->u.bgp.suppressed : 0;
|
||||
|
||||
|
|
@ -2355,7 +2355,7 @@ bgp_get_route_info(rte *e, byte *buf)
|
|||
eattr *o = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
|
||||
u32 origas;
|
||||
|
||||
buf += bsprintf(buf, " (%d", e->pref);
|
||||
buf += bsprintf(buf, " (%d", e->attrs->pref);
|
||||
|
||||
if (e->u.bgp.suppressed)
|
||||
buf += bsprintf(buf, "-");
|
||||
|
|
|
|||
|
|
@ -2440,6 +2440,7 @@ bgp_decode_nlri(struct bgp_parse_state *s, u32 afi, byte *nlri, uint len, ea_lis
|
|||
a->scope = SCOPE_UNIVERSE;
|
||||
a->from = s->proto->remote_ip;
|
||||
a->eattrs = ea;
|
||||
a->pref = c->c.preference;
|
||||
|
||||
c->desc->decode_next_hop(s, nh, nh_len, a);
|
||||
bgp_finish_attrs(s, a);
|
||||
|
|
|
|||
|
|
@ -609,7 +609,7 @@ ospf_get_route_info(rte * rte, byte * buf)
|
|||
}
|
||||
|
||||
buf += bsprintf(buf, " %s", type);
|
||||
buf += bsprintf(buf, " (%d/%d", rte->pref, rte->u.ospf.metric1);
|
||||
buf += bsprintf(buf, " (%d/%d", rte->attrs->pref, rte->u.ospf.metric1);
|
||||
if (rte->attrs->source == RTS_OSPF_EXT2)
|
||||
buf += bsprintf(buf, "/%d", rte->u.ospf.metric2);
|
||||
buf += bsprintf(buf, ")");
|
||||
|
|
|
|||
|
|
@ -2058,6 +2058,7 @@ again1:
|
|||
.scope = SCOPE_UNIVERSE,
|
||||
.dest = RTD_UNICAST,
|
||||
.nh = *(nf->n.nhs),
|
||||
.pref = p->p.main_channel->preference,
|
||||
};
|
||||
|
||||
if (reload || ort_changed(nf, &a0))
|
||||
|
|
|
|||
|
|
@ -147,6 +147,7 @@ perf_loop(void *data)
|
|||
.source = RTS_PERF,
|
||||
.scope = SCOPE_UNIVERSE,
|
||||
.dest = RTD_UNICAST,
|
||||
.pref = p->p.main_channel->preference,
|
||||
.nh.iface = p->ifa->iface,
|
||||
.nh.gw = gw,
|
||||
.nh.weight = 1,
|
||||
|
|
|
|||
|
|
@ -68,14 +68,13 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
|
|||
a = alloca(rta_size(new->attrs));
|
||||
memcpy(a, new->attrs, rta_size(new->attrs));
|
||||
|
||||
a->aflags = 0;
|
||||
a->cached = 0;
|
||||
a->hostentry = NULL;
|
||||
e = rte_get_temp(a);
|
||||
e->pflags = 0;
|
||||
|
||||
/* Copy protocol specific embedded attributes. */
|
||||
memcpy(&(e->u), &(new->u), sizeof(e->u));
|
||||
e->pref = new->pref;
|
||||
e->pflags = new->pflags;
|
||||
|
||||
#ifdef CONFIG_BGP
|
||||
|
|
|
|||
|
|
@ -146,6 +146,7 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
|
|||
/* Update */
|
||||
rta a0 = {
|
||||
.src = p->p.main_source,
|
||||
.pref = p->p.main_channel->preference,
|
||||
.source = RTS_RIP,
|
||||
.scope = SCOPE_UNIVERSE,
|
||||
.dest = RTD_UNICAST,
|
||||
|
|
@ -1198,7 +1199,7 @@ rip_reconfigure(struct proto *P, struct proto_config *CF)
|
|||
static void
|
||||
rip_get_route_info(rte *rte, byte *buf)
|
||||
{
|
||||
buf += bsprintf(buf, " (%d/%d)", rte->pref, rte->u.rip.metric);
|
||||
buf += bsprintf(buf, " (%d/%d)", rte->attrs->pref, rte->u.rip.metric);
|
||||
|
||||
if (rte->u.rip.tag)
|
||||
bsprintf(buf, " [%04x]", rte->u.rip.tag);
|
||||
|
|
|
|||
|
|
@ -122,6 +122,7 @@ rpki_table_add_roa(struct rpki_cache *cache, struct channel *channel, const net_
|
|||
|
||||
rta a0 = {
|
||||
.src = p->p.main_source,
|
||||
.pref = channel->preference,
|
||||
.source = RTS_RPKI,
|
||||
.scope = SCOPE_UNIVERSE,
|
||||
.dest = RTD_NONE,
|
||||
|
|
|
|||
|
|
@ -60,6 +60,7 @@ static_announce_rte(struct static_proto *p, struct static_route *r)
|
|||
a->source = RTS_STATIC;
|
||||
a->scope = SCOPE_UNIVERSE;
|
||||
a->dest = r->dest;
|
||||
a->pref = p->p.main_channel->preference;
|
||||
|
||||
if (r->dest == RTD_UNICAST)
|
||||
{
|
||||
|
|
@ -721,9 +722,9 @@ static_get_route_info(rte *rte, byte *buf)
|
|||
{
|
||||
eattr *a = ea_find(rte->attrs->eattrs, EA_GEN_IGP_METRIC);
|
||||
if (a)
|
||||
buf += bsprintf(buf, " (%d/%u)", rte->pref, a->u.data);
|
||||
buf += bsprintf(buf, " (%d/%u)", rte->attrs->pref, a->u.data);
|
||||
else
|
||||
buf += bsprintf(buf, " (%d)", rte->pref);
|
||||
buf += bsprintf(buf, " (%d)", rte->attrs->pref);
|
||||
}
|
||||
|
||||
static void
|
||||
|
|
|
|||
|
|
@ -433,6 +433,9 @@ krt_learn_async(struct krt_proto *p, rte *e, int new)
|
|||
net *n = net_get(p->krt_table, n0->n.addr);
|
||||
rte *g, **gg, *best, **bestp, *old_best;
|
||||
|
||||
ASSERT(!e->attrs->cached);
|
||||
e->attrs->pref = p->p.main_channel->preference;
|
||||
|
||||
e->attrs = rta_lookup(e->attrs);
|
||||
|
||||
old_best = n->routes;
|
||||
|
|
|
|||
Loading…
Reference in a new issue