diff options
| -rw-r--r-- | net/ipv4/fib_lookup.h | 7 | ||||
| -rw-r--r-- | net/ipv4/fib_semantics.c | 68 | ||||
| -rw-r--r-- | net/ipv4/fib_trie.c | 51 |
3 files changed, 51 insertions, 75 deletions
diff --git a/net/ipv4/fib_lookup.h b/net/ipv4/fib_lookup.h index d5c40d8f6632..84db2da5c848 100644 --- a/net/ipv4/fib_lookup.h +++ b/net/ipv4/fib_lookup.h @@ -51,4 +51,11 @@ static inline void fib_result_assign(struct fib_result *res, res->fi = fi; } +struct fib_prop { + int error; + u8 scope; +}; + +extern const struct fib_prop fib_props[RTN_MAX + 1]; + #endif /* _FIB_LOOKUP_H */ diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index c29291b21009..6349a21692ec 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -90,11 +90,7 @@ static DEFINE_SPINLOCK(fib_multipath_lock); #define endfor_nexthops(fi) } -static const struct -{ - int error; - u8 scope; -} fib_props[RTN_MAX + 1] = { +const struct fib_prop fib_props[RTN_MAX + 1] = { [RTN_UNSPEC] = { .error = 0, .scope = RT_SCOPE_NOWHERE, @@ -902,68 +898,6 @@ failure: return ERR_PTR(err); } -/* Note! fib_semantic_match intentionally uses RCU list functions. */ -int fib_semantic_match(struct fib_table *tb, struct list_head *head, - const struct flowi *flp, struct fib_result *res, - int prefixlen, int fib_flags) -{ - struct fib_alias *fa; - int nh_sel = 0; - - list_for_each_entry_rcu(fa, head, fa_list) { - int err; - - if (fa->fa_tos && - fa->fa_tos != flp->fl4_tos) - continue; - - if (fa->fa_scope < flp->fl4_scope) - continue; - - fib_alias_accessed(fa); - - err = fib_props[fa->fa_type].error; - if (err == 0) { - struct fib_info *fi = fa->fa_info; - - if (fi->fib_flags & RTNH_F_DEAD) - continue; - - for_nexthops(fi) { - if (nh->nh_flags & RTNH_F_DEAD) - continue; - if (!flp->oif || flp->oif == nh->nh_oif) - break; - } -#ifdef CONFIG_IP_ROUTE_MULTIPATH - if (nhsel < fi->fib_nhs) { - nh_sel = nhsel; - goto out_fill_res; - } -#else - if (nhsel < 1) - goto out_fill_res; -#endif - endfor_nexthops(fi); - continue; - } - return err; - } - return 1; - -out_fill_res: - res->prefixlen = prefixlen; - res->nh_sel = nh_sel; - res->type = fa->fa_type; - res->scope = fa->fa_scope; - res->fi = fa->fa_info; - res->table = tb; - res->fa_head = head; - if (!(fib_flags & FIB_LOOKUP_NOREF)) - atomic_inc(&res->fi->fib_clntref); - return 0; -} - /* Find appropriate source address to this destination */ __be32 __fib_res_prefsrc(struct fib_result *res) diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index edf3b0997e01..a4109a544778 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1349,23 +1349,58 @@ static int check_leaf(struct fib_table *tb, struct trie *t, struct leaf *l, struct hlist_node *node; hlist_for_each_entry_rcu(li, node, hhead, hlist) { - int err; + struct fib_alias *fa; int plen = li->plen; __be32 mask = inet_make_mask(plen); if (l->key != (key & ntohl(mask))) continue; - err = fib_semantic_match(tb, &li->falh, flp, res, plen, fib_flags); + list_for_each_entry_rcu(fa, &li->falh, fa_list) { + struct fib_info *fi = fa->fa_info; + int nhsel, err; + if (fa->fa_tos && fa->fa_tos != flp->fl4_tos) + continue; + if (fa->fa_scope < flp->fl4_scope) + continue; + fib_alias_accessed(fa); + err = fib_props[fa->fa_type].error; + if (err) { #ifdef CONFIG_IP_FIB_TRIE_STATS - if (err <= 0) - t->stats.semantic_match_passed++; - else - t->stats.semantic_match_miss++; + t->stats.semantic_match_miss++; +#endif + return 1; + } + if (fi->fib_flags & RTNH_F_DEAD) + continue; + for (nhsel = 0; nhsel < fi->fib_nhs; nhsel++) { + const struct fib_nh *nh = &fi->fib_nh[nhsel]; + + if (nh->nh_flags & RTNH_F_DEAD) + continue; + if (flp->oif && flp->oif != nh->nh_oif) + continue; + +#ifdef CONFIG_IP_FIB_TRIE_STATS + t->stats.semantic_match_passed++; +#endif + res->prefixlen = plen; + res->nh_sel = nhsel; + res->type = fa->fa_type; + res->scope = fa->fa_scope; + res->fi = fi; + res->table = tb; + res->fa_head = &li->falh; + if (!(fib_flags & FIB_LOOKUP_NOREF)) + atomic_inc(&res->fi->fib_clntref); + return 0; + } + } + +#ifdef CONFIG_IP_FIB_TRIE_STATS + t->stats.semantic_match_miss++; #endif - if (err <= 0) - return err; } return 1; |