diff options
Diffstat (limited to 'nest')
| -rw-r--r-- | nest/proto-hooks.c | 30 | ||||
| -rw-r--r-- | nest/protocol.h | 4 | ||||
| -rw-r--r-- | nest/route.h | 8 | ||||
| -rw-r--r-- | nest/rt-show.c | 1 | ||||
| -rw-r--r-- | nest/rt-table.c | 184 |
5 files changed, 0 insertions, 227 deletions
diff --git a/nest/proto-hooks.c b/nest/proto-hooks.c index bc88b4b4..0cd4ac37 100644 --- a/nest/proto-hooks.c +++ b/nest/proto-hooks.c @@ -228,36 +228,6 @@ void neigh_notify(neighbor *neigh) { DUMMY; } /** - * make_tmp_attrs - convert embedded attributes to temporary ones - * @e: route entry - * @pool: linear pool to allocate attribute memory in - * - * This hook is called by the routing table functions if they need - * to convert the protocol attributes embedded directly in the &rte - * to temporary extended attributes in order to distribute them - * to other protocols or to filters. make_tmp_attrs() creates - * an &ea_list in the linear pool @pool, fills it with values of the - * temporary attributes and returns a pointer to it. - */ -ea_list *make_tmp_attrs(rte *e, struct linpool *pool) -{ DUMMY; } - -/** - * store_tmp_attrs - convert temporary attributes to embedded ones - * @e: route entry - * @attrs: temporary attributes to be converted - * - * This hook is an exact opposite of make_tmp_attrs() -- it takes - * a list of extended attributes and converts them to attributes - * embedded in the &rte corresponding to this protocol. - * - * You must be prepared for any of the attributes being missing - * from the list and use default values instead. - */ -void store_tmp_attrs(rte *e, ea_list *attrs) -{ DUMMY; } - -/** * preexport - pre-filtering decisions before route export * @p: protocol instance the route is going to be exported to * @e: the route in question diff --git a/nest/protocol.h b/nest/protocol.h index 62fd2b66..1679d590 100644 --- a/nest/protocol.h +++ b/nest/protocol.h @@ -198,8 +198,6 @@ struct proto { * ifa_notify Notify protocol about interface address changes. * rt_notify Notify protocol about routing table updates. * neigh_notify Notify protocol about neighbor cache events. - * make_tmp_attrs Add attributes to rta from from private attrs stored in rte. The route and rta MUST NOT be cached. - * store_tmp_attrs Store private attrs back to rte and undef added attributes. The route and rta MUST NOT be cached. * preexport Called as the first step of the route exporting process. * It can decide whether the route shall be exported: * -1 = reject, @@ -216,8 +214,6 @@ struct proto { void (*ifa_notify)(struct proto *, unsigned flags, struct ifa *a); void (*rt_notify)(struct proto *, struct channel *, struct network *net, struct rte *new, struct rte *old); void (*neigh_notify)(struct neighbor *neigh); - void (*make_tmp_attrs)(struct rte *rt, struct linpool *pool); - void (*store_tmp_attrs)(struct rte *rt, struct linpool *pool); int (*preexport)(struct proto *, struct rte *rt); void (*reload_routes)(struct channel *); void (*feed_begin)(struct channel *, int initial); diff --git a/nest/route.h b/nest/route.h index 27ae75ce..bb23152b 100644 --- a/nest/route.h +++ b/nest/route.h @@ -243,8 +243,6 @@ typedef struct rte { byte flags; /* Flags (REF_...) */ byte pflags; /* Protocol-specific flags */ btime lastmod; /* Last modified */ - union { /* Protocol-dependent data (metrics etc.) */ - } u; } rte; #define REF_COW 1 /* Copy this rte on write */ @@ -307,10 +305,6 @@ void rte_free(rte *); rte *rte_do_cow(rte *); static inline rte * rte_cow(rte *r) { return (r->flags & REF_COW) ? rte_do_cow(r) : r; } rte *rte_cow_rta(rte *r, linpool *lp); -void rte_init_tmp_attrs(struct rte *r, linpool *lp, uint max); -void rte_make_tmp_attr(struct rte *r, uint id, uint type, uintptr_t val); -void rte_make_tmp_attrs(struct rte **r, struct linpool *pool, struct rta **old_attrs); -uintptr_t rte_store_tmp_attr(struct rte *r, uint id); void rt_dump(rtable *); void rt_dump_all(void); int rt_feed_channel(struct channel *c); @@ -475,7 +469,6 @@ typedef struct eattr { #define EA_CODE(proto,id) (((proto) << 8) | (id)) #define EA_ID(ea) ((ea) & 0xff) #define EA_PROTO(ea) ((ea) >> 8) -#define EA_ID_FLAG(ea) (1 << EA_ID(ea)) #define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT) #define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT) #define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT) @@ -537,7 +530,6 @@ typedef struct ea_list { #define EALF_SORTED 1 /* Attributes are sorted by code */ #define EALF_BISECT 2 /* Use interval bisection for searching */ #define EALF_CACHED 4 /* Attributes belonging to cached rta */ -#define EALF_TEMP 8 /* Temporary ea_list added by make_tmp_attrs hooks */ struct rte_src *rt_find_source(struct proto *p, u32 id); struct rte_src *rt_get_source(struct proto *p, u32 id); diff --git a/nest/rt-show.c b/nest/rt-show.c index 05065134..99f29691 100644 --- a/nest/rt-show.c +++ b/nest/rt-show.c @@ -127,7 +127,6 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d) continue; ee = e; - rte_make_tmp_attrs(&e, c->show_pool, NULL); /* Export channel is down, do not try to export routes to it */ if (ec && (ec->export_state == ES_DOWN)) diff --git a/nest/rt-table.c b/nest/rt-table.c index 13af3eaf..ff0ef463 100644 --- a/nest/rt-table.c +++ b/nest/rt-table.c @@ -354,175 +354,6 @@ rte_free_quick(rte *e) sl_free(rte_slab, e); } -/** - * rte_init_tmp_attrs - initialize temporary ea_list for route - * @r: route entry to be modified - * @lp: linpool from which to allocate attributes - * @max: maximum number of added temporary attribus - * - * This function is supposed to be called from make_tmp_attrs() and - * store_tmp_attrs() hooks before rte_make_tmp_attr() / rte_store_tmp_attr() - * functions. It allocates &ea_list with length for @max items for temporary - * attributes and puts it on top of eattrs stack. - */ -void -rte_init_tmp_attrs(rte *r, linpool *lp, uint max) -{ - struct ea_list *e = lp_alloc(lp, sizeof(struct ea_list) + max * sizeof(eattr)); - - e->next = r->attrs->eattrs; - e->flags = EALF_SORTED | EALF_TEMP; - e->count = 0; - - r->attrs->eattrs = e; -} - -/** - * rte_make_tmp_attr - make temporary eattr from private route fields - * @r: route entry to be modified - * @id: attribute ID - * @type: attribute type - * @val: attribute value (u32 or adata ptr) - * - * This function is supposed to be called from make_tmp_attrs() hook for - * each temporary attribute, after temporary &ea_list was initialized by - * rte_init_tmp_attrs(). It checks whether temporary attribute is supposed to - * be defined (based on route pflags) and if so then it fills &eattr field in - * preallocated temporary &ea_list on top of route @r eattrs stack. - * - * Note that it may require free &eattr in temporary &ea_list, so it must not be - * called more times than @max argument of rte_init_tmp_attrs(). - */ -void -rte_make_tmp_attr(rte *r, uint id, uint type, uintptr_t val) -{ - if (r->pflags & EA_ID_FLAG(id)) - { - ea_list *e = r->attrs->eattrs; - eattr *a = &e->attrs[e->count++]; - a->id = id; - a->type = type; - a->flags = 0; - - if (type & EAF_EMBEDDED) - a->u.data = (u32) val; - else - a->u.ptr = (struct adata *) val; - } -} - -/** - * rte_store_tmp_attr - store temporary eattr to private route fields - * @r: route entry to be modified - * @id: attribute ID - * - * This function is supposed to be called from store_tmp_attrs() hook for - * each temporary attribute, after temporary &ea_list was initialized by - * rte_init_tmp_attrs(). It checks whether temporary attribute is defined in - * route @r eattrs stack, updates route pflags accordingly, undefines it by - * filling &eattr field in preallocated temporary &ea_list on top of the eattrs - * stack, and returns the value. Caller is supposed to store it in the - * appropriate private field. - * - * Note that it may require free &eattr in temporary &ea_list, so it must not be - * called more times than @max argument of rte_init_tmp_attrs() - */ -uintptr_t -rte_store_tmp_attr(rte *r, uint id) -{ - ea_list *e = r->attrs->eattrs; - eattr *a = ea_find(e->next, id); - - if (a) - { - e->attrs[e->count++] = (struct eattr) { .id = id, .type = EAF_TYPE_UNDEF }; - r->pflags |= EA_ID_FLAG(id); - return (a->type & EAF_EMBEDDED) ? a->u.data : (uintptr_t) a->u.ptr; - } - else - { - r->pflags &= ~EA_ID_FLAG(id); - return 0; - } -} - -/** - * rte_make_tmp_attrs - prepare route by adding all relevant temporary route attributes - * @r: route entry to be modified (may be replaced if COW) - * @lp: linpool from which to allocate attributes - * @old_attrs: temporary ref to old &rta (may be NULL) - * - * This function expands privately stored protocol-dependent route attributes - * to a uniform &eattr / &ea_list representation. It is essentially a wrapper - * around protocol make_tmp_attrs() hook, which does some additional work like - * ensuring that route @r is writable. - * - * The route @r may be read-only (with %REF_COW flag), in that case rw copy is - * obtained by rte_cow() and @r is replaced. If @rte is originally rw, it may be - * directly modified (and it is never copied). - * - * If the @old_attrs ptr is supplied, the function obtains another reference of - * old cached &rta, that is necessary in some cases (see rte_cow_rta() for - * details). It is freed by rte_store_tmp_attrs(), or manually by rta_free(). - * - * Generally, if caller ensures that @r is read-only (e.g. in route export) then - * it may ignore @old_attrs (and set it to NULL), but must handle replacement of - * @r. If caller ensures that @r is writable (e.g. in route import) then it may - * ignore replacement of @r, but it must handle @old_attrs. - */ -void -rte_make_tmp_attrs(rte **r, linpool *lp, rta **old_attrs) -{ - void (*make_tmp_attrs)(rte *r, linpool *lp); - make_tmp_attrs = (*r)->src->proto->make_tmp_attrs; - - if (!make_tmp_attrs) - return; - - /* We may need to keep ref to old attributes, will be freed in rte_store_tmp_attrs() */ - if (old_attrs) - *old_attrs = rta_is_cached((*r)->attrs) ? rta_clone((*r)->attrs) : NULL; - - *r = rte_cow_rta(*r, lp); - make_tmp_attrs(*r, lp); -} - -/** - * rte_store_tmp_attrs - store temporary route attributes back to private route fields - * @r: route entry to be modified - * @lp: linpool from which to allocate attributes - * @old_attrs: temporary ref to old &rta - * - * This function stores temporary route attributes that were expanded by - * rte_make_tmp_attrs() back to private route fields and also undefines them. - * It is essentially a wrapper around protocol store_tmp_attrs() hook, which - * does some additional work like shortcut if there is no change and cleanup - * of @old_attrs reference obtained by rte_make_tmp_attrs(). - */ -static void -rte_store_tmp_attrs(rte *r, linpool *lp, rta *old_attrs) -{ - void (*store_tmp_attrs)(rte *rt, linpool *lp); - store_tmp_attrs = r->src->proto->store_tmp_attrs; - - if (!store_tmp_attrs) - return; - - ASSERT(!rta_is_cached(r->attrs)); - - /* If there is no new ea_list, we just skip the temporary ea_list */ - ea_list *ea = r->attrs->eattrs; - if (ea && (ea->flags & EALF_TEMP)) - r->attrs->eattrs = ea->next; - else - store_tmp_attrs(r, lp); - - /* Free ref we got in rte_make_tmp_attrs(), have to do rta_lookup() first */ - r->attrs = rta_lookup(r->attrs); - rta_free(old_attrs); -} - - static int /* Actually better or at least as good as */ rte_better(rte *new, rte *old) { @@ -623,8 +454,6 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si goto accept; } - rte_make_tmp_attrs(&rt, pool, NULL); - v = filter && ((filter == FILTER_REJECT) || (f_run(filter, &rt, pool, (silent ? FF_SILENT : 0)) > F_ACCEPT)); @@ -1469,9 +1298,6 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src) } else if (filter) { - rta *old_attrs = NULL; - rte_make_tmp_attrs(&new, rte_update_pool, &old_attrs); - int fr = f_run(filter, &new, rte_update_pool, 0); if (fr > F_ACCEPT) { @@ -1479,15 +1305,10 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src) rte_trace_in(D_FILTERS, c, new, "filtered out"); if (! c->in_keep_filtered) - { - rta_free(old_attrs); goto drop; - } new->flags |= REF_FILTERED; } - - rte_store_tmp_attrs(new, rte_update_pool, old_attrs); } if (!rta_is_cached(new->attrs)) /* Need to copy attributes */ new->attrs = rta_lookup(new->attrs); @@ -1581,10 +1402,7 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter) /* Rest is stripped down export_filter() */ int v = p->preexport ? p->preexport(p, rt) : 0; if (v == RIC_PROCESS) - { - rte_make_tmp_attrs(&rt, rte_update_pool, NULL); v = (f_run(filter, &rt, rte_update_pool, FF_SILENT) <= F_ACCEPT); - } /* Discard temporary rte */ if (rt != n->routes) @@ -2754,8 +2572,6 @@ rte_update_out(struct channel *c, const net_addr *n, rte *new, rte *old0, rte ** net = net_get(tab, n); src = new->src; - rte_store_tmp_attrs(new, rte_update_pool, NULL); - if (!rta_is_cached(new->attrs)) new->attrs = rta_lookup(new->attrs); } |