From 1a829ec0c3285baac712352c3a046a4f76013e70 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Thu, 6 Dec 2018 17:17:52 +0100 Subject: chain: Add lookup functions for chain list and rules in chain For now, these lookup functions simply iterate over the linked list until they find the right entry. In future, they may make use of more optimized data structures behind the curtains. Signed-off-by: Phil Sutter Signed-off-by: Pablo Neira Ayuso --- src/chain.c | 28 ++++++++++++++++++++++++++++ src/libnftnl.map | 3 +++ 2 files changed, 31 insertions(+) (limited to 'src') diff --git a/src/chain.c b/src/chain.c index c8b7f9b..8668fb7d 100644 --- a/src/chain.c +++ b/src/chain.c @@ -734,6 +734,20 @@ int nftnl_rule_foreach(struct nftnl_chain *c, return 0; } +EXPORT_SYMBOL(nftnl_rule_lookup_byindex); +struct nftnl_rule * +nftnl_rule_lookup_byindex(struct nftnl_chain *c, uint32_t index) +{ + struct nftnl_rule *r; + + list_for_each_entry(r, &c->rule_list, head) { + if (!index) + return r; + index--; + } + return NULL; +} + struct nftnl_rule_iter { const struct nftnl_chain *c; struct nftnl_rule *cur; @@ -856,6 +870,20 @@ int nftnl_chain_list_foreach(struct nftnl_chain_list *chain_list, return 0; } +EXPORT_SYMBOL(nftnl_chain_list_lookup_byname); +struct nftnl_chain * +nftnl_chain_list_lookup_byname(struct nftnl_chain_list *chain_list, + const char *chain) +{ + struct nftnl_chain *c; + + list_for_each_entry(c, &chain_list->list, head) { + if (!strcmp(chain, c->name)) + return c; + } + return NULL; +} + struct nftnl_chain_list_iter { const struct nftnl_chain_list *list; struct nftnl_chain *cur; diff --git a/src/libnftnl.map b/src/libnftnl.map index 96d5b5f..0d3be32 100644 --- a/src/libnftnl.map +++ b/src/libnftnl.map @@ -345,4 +345,7 @@ LIBNFTNL_12 { nftnl_rule_iter_create; nftnl_rule_iter_next; nftnl_rule_iter_destroy; + + nftnl_chain_list_lookup_byname; + nftnl_rule_lookup_byindex; } LIBNFTNL_11; -- cgit v1.2.3