diff options
Diffstat (limited to 'net/netfilter/nf_tables_api.c')
-rw-r--r-- | net/netfilter/nf_tables_api.c | 77 |
1 files changed, 63 insertions, 14 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 04d4e3772584..91e80aa852d6 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -214,6 +214,34 @@ static int nft_delchain(struct nft_ctx *ctx) return err; } +static void nft_rule_expr_activate(const struct nft_ctx *ctx, + struct nft_rule *rule) +{ + struct nft_expr *expr; + + expr = nft_expr_first(rule); + while (expr != nft_expr_last(rule) && expr->ops) { + if (expr->ops->activate) + expr->ops->activate(ctx, expr); + + expr = nft_expr_next(expr); + } +} + +static void nft_rule_expr_deactivate(const struct nft_ctx *ctx, + struct nft_rule *rule) +{ + struct nft_expr *expr; + + expr = nft_expr_first(rule); + while (expr != nft_expr_last(rule) && expr->ops) { + if (expr->ops->deactivate) + expr->ops->deactivate(ctx, expr); + + expr = nft_expr_next(expr); + } +} + static int nf_tables_delrule_deactivate(struct nft_ctx *ctx, struct nft_rule *rule) { @@ -259,6 +287,7 @@ static int nft_delrule(struct nft_ctx *ctx, struct nft_rule *rule) nft_trans_destroy(trans); return err; } + nft_rule_expr_deactivate(ctx, rule); return 0; } @@ -2238,6 +2267,13 @@ static void nf_tables_rule_destroy(const struct nft_ctx *ctx, kfree(rule); } +static void nf_tables_rule_release(const struct nft_ctx *ctx, + struct nft_rule *rule) +{ + nft_rule_expr_deactivate(ctx, rule); + nf_tables_rule_destroy(ctx, rule); +} + #define NFT_RULE_MAXEXPRS 128 static struct nft_expr_info *info; @@ -2402,7 +2438,7 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, return 0; err2: - nf_tables_rule_destroy(&ctx, rule); + nf_tables_rule_release(&ctx, rule); err1: for (i = 0; i < n; i++) { if (info[i].ops != NULL) @@ -4044,8 +4080,10 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, if (nft_set_ext_exists(ext, NFT_SET_EXT_DATA) ^ nft_set_ext_exists(ext2, NFT_SET_EXT_DATA) || nft_set_ext_exists(ext, NFT_SET_EXT_OBJREF) ^ - nft_set_ext_exists(ext2, NFT_SET_EXT_OBJREF)) - return -EBUSY; + nft_set_ext_exists(ext2, NFT_SET_EXT_OBJREF)) { + err = -EBUSY; + goto err5; + } if ((nft_set_ext_exists(ext, NFT_SET_EXT_DATA) && nft_set_ext_exists(ext2, NFT_SET_EXT_DATA) && memcmp(nft_set_ext_data(ext), @@ -4130,7 +4168,7 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk, * NFT_GOTO verdicts. This function must be called on active data objects * from the second phase of the commit protocol. */ -static void nft_data_hold(const struct nft_data *data, enum nft_data_types type) +void nft_data_hold(const struct nft_data *data, enum nft_data_types type) { if (type == NFT_DATA_VERDICT) { switch (data->verdict.code) { @@ -5761,7 +5799,7 @@ static void nft_chain_commit_update(struct nft_trans *trans) } } -static void nf_tables_commit_release(struct nft_trans *trans) +static void nft_commit_release(struct nft_trans *trans) { switch (trans->msg_type) { case NFT_MSG_DELTABLE: @@ -5790,6 +5828,21 @@ static void nf_tables_commit_release(struct nft_trans *trans) kfree(trans); } +static void nf_tables_commit_release(struct net *net) +{ + struct nft_trans *trans, *next; + + if (list_empty(&net->nft.commit_list)) + return; + + synchronize_rcu(); + + list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { + list_del(&trans->list); + nft_commit_release(trans); + } +} + static int nf_tables_commit(struct net *net, struct sk_buff *skb) { struct nft_trans *trans, *next; @@ -5920,13 +5973,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) } } - synchronize_rcu(); - - list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { - list_del(&trans->list); - nf_tables_commit_release(trans); - } - + nf_tables_commit_release(net); nf_tables_gen_notify(net, skb, NFT_MSG_NEWGEN); return 0; @@ -6006,10 +6053,12 @@ static int nf_tables_abort(struct net *net, struct sk_buff *skb) case NFT_MSG_NEWRULE: trans->ctx.chain->use--; list_del_rcu(&nft_trans_rule(trans)->list); + nft_rule_expr_deactivate(&trans->ctx, nft_trans_rule(trans)); break; case NFT_MSG_DELRULE: trans->ctx.chain->use++; nft_clear(trans->ctx.net, nft_trans_rule(trans)); + nft_rule_expr_activate(&trans->ctx, nft_trans_rule(trans)); nft_trans_destroy(trans); break; case NFT_MSG_NEWSET: @@ -6585,7 +6634,7 @@ int __nft_release_basechain(struct nft_ctx *ctx) list_for_each_entry_safe(rule, nr, &ctx->chain->rules, list) { list_del(&rule->list); ctx->chain->use--; - nf_tables_rule_destroy(ctx, rule); + nf_tables_rule_release(ctx, rule); } list_del(&ctx->chain->list); ctx->table->use--; @@ -6623,7 +6672,7 @@ static void __nft_release_tables(struct net *net) list_for_each_entry_safe(rule, nr, &chain->rules, list) { list_del(&rule->list); chain->use--; - nf_tables_rule_destroy(&ctx, rule); + nf_tables_rule_release(&ctx, rule); } } list_for_each_entry_safe(flowtable, nf, &table->flowtables, list) { |