[net-next,17/22] netfilter: nftables: add nft_pernet() helper function

Message ID	20210426171056.345271-18-pablo@netfilter.org
State	New
Headers	show Return-Path: <netdev-owner@kernel.org> From: Pablo Neira Ayuso <pablo@netfilter.org> To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org Subject: [PATCH net-next 17/22] netfilter: nftables: add nft_pernet() helper function Date: Mon, 26 Apr 2021 19:10:51 +0200 Message-Id: <20210426171056.345271-18-pablo@netfilter.org> In-Reply-To: <20210426171056.345271-1-pablo@netfilter.org> References: <20210426171056.345271-1-pablo@netfilter.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Netfilter updates for net-next \| expand [net-next,00/22] Netfilter updates for net-next [net-next,01/22] netfilter: nat: move nf_xfrm_me_harder to where it is used [net-next,02/22] netfilter: nft_socket: add support for cgroupsv2 [net-next,03/22] netfilter: disable defrag once its no longer needed [net-next,04/22] netfilter: ebtables: remove the 3 ebtables pointers from struct net [net-next,05/22] netfilter: x_tables: remove ipt_unregister_table [net-next,06/22] netfilter: x_tables: add xt_find_table [net-next,07/22] netfilter: iptables: unregister the tables by name [net-next,08/22] netfilter: ip6tables: unregister the tables by name [net-next,09/22] netfilter: arptables: unregister the tables by name [net-next,10/22] netfilter: x_tables: remove paranoia tests [net-next,11/22] netfilter: xt_nat: pass table to hookfn [net-next,12/22] netfilter: ip_tables: pass table pointer via nf_hook_ops [net-next,13/22] netfilter: arp_tables: pass table pointer via nf_hook_ops [net-next,14/22] netfilter: ip6_tables: pass table pointer via nf_hook_ops [net-next,15/22] netfilter: remove all xt_table anchors from struct net [net-next,16/22] netfilter: nf_log_syslog: Unset bridge logger in pernet exit [net-next,17/22] netfilter: nftables: add nft_pernet() helper function [net-next,18/22] netfilter: nfnetlink: add struct nfnl_info and pass it to callbacks [net-next,19/22] netfilter: nfnetlink: pass struct nfnl_info to rcu callbacks [net-next,20/22] netfilter: nfnetlink: pass struct nfnl_info to batch callbacks [net-next,21/22] netfilter: nfnetlink: consolidate callback types [net-next,22/22] netfilter: allow to turn off xtables compat layer

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 4a75da2a2e1d..eb708b77c4a5 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -13,6 +13,7 @@ #include <net/netfilter/nf_flow_table.h> #include <net/netlink.h> #include <net/flow_offload.h> +#include <net/netns/generic.h> #define NFT_MAX_HOOKS (NF_INET_INGRESS + 1) @@ -1580,4 +1581,11 @@ struct nftables_pernet { u8 validate_state; }; +extern unsigned int nf_tables_net_id; + +static inline struct nftables_pernet *nft_pernet(const struct net *net) +{ + return net_generic(net, nf_tables_net_id); +} + #endif /* _NET_NF_TABLES_H */ diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 357443b3c0e4..155b85553fcc 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -21,7 +21,6 @@ #include <net/netfilter/nf_tables.h> #include <net/netfilter/nf_tables_offload.h> #include <net/net_namespace.h> -#include <net/netns/generic.h> #include <net/sock.h> #define NFT_MODULE_AUTOLOAD_LIMIT (MODULE_NAME_LEN - sizeof("nft-expr-255-")) @@ -106,7 +105,7 @@ static const u8 nft2audit_op[NFT_MSG_MAX] = { // enum nf_tables_msg_types static void nft_validate_state_update(struct net *net, u8 new_validate_state) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); switch (nft_net->validate_state) { case NFT_VALIDATE_SKIP: @@ -181,7 +180,7 @@ static void nft_set_trans_bind(const struct nft_ctx *ctx, struct nft_set *set) if (!nft_set_is_anonymous(set)) return; - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); list_for_each_entry_reverse(trans, &nft_net->commit_list, list) { switch (trans->msg_type) { case NFT_MSG_NEWSET: @@ -278,9 +277,8 @@ static void nf_tables_unregister_hook(struct net *net, static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *trans) { - struct nftables_pernet *nft_net; + struct nftables_pernet *nft_net = nft_pernet(net); - nft_net = net_generic(net, nf_tables_net_id); list_add_tail(&trans->list, &nft_net->commit_list); } @@ -566,7 +564,7 @@ static struct nft_table *nft_table_lookup(const struct net *net, if (nla == NULL) return ERR_PTR(-EINVAL); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); list_for_each_entry_rcu(table, &nft_net->tables, list, lockdep_is_held(&nft_net->commit_mutex)) { if (!nla_strcmp(nla, table->name) && @@ -590,7 +588,7 @@ static struct nft_table *nft_table_lookup_byhandle(const struct net *net, struct nftables_pernet *nft_net; struct nft_table *table; - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); list_for_each_entry(table, &nft_net->tables, list) { if (be64_to_cpu(nla_get_be64(nla)) == table->handle && nft_active_genmask(table, genmask)) @@ -655,7 +653,7 @@ __printf(2, 3) int nft_request_module(struct net *net, const char *fmt, if (ret >= MODULE_NAME_LEN) return 0; - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); list_for_each_entry(req, &nft_net->module_list, list) { if (!strcmp(req->module, module_name)) { if (req->done) @@ -711,7 +709,7 @@ nf_tables_chain_type_lookup(struct net *net, const struct nlattr *nla, static __be16 nft_base_seq(const struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); return htons(nft_net->base_seq & 0xffff); } @@ -793,7 +791,7 @@ static void nf_tables_table_notify(const struct nft_ctx *ctx, int event) goto err; } - nft_net = net_generic(ctx->net, nf_tables_net_id); + nft_net = nft_pernet(ctx->net); nft_notify_enqueue(skb, ctx->report, &nft_net->notify_list); return; err: @@ -811,7 +809,7 @@ static int nf_tables_dump_tables(struct sk_buff *skb, int family = nfmsg->nfgen_family; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); cb->seq = nft_net->base_seq; list_for_each_entry_rcu(table, &nft_net->tables, list) { @@ -1062,7 +1060,7 @@ static int nf_tables_newtable(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); u8 genmask = nft_genmask_next(net); int family = nfmsg->nfgen_family; @@ -1221,9 +1219,9 @@ static int nft_flush_table(struct nft_ctx *ctx) static int nft_flush(struct nft_ctx *ctx, int family) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); - struct nft_table *table, *nt; + struct nftables_pernet *nft_net = nft_pernet(ctx->net); const struct nlattr * const *nla = ctx->nla; + struct nft_table *table, *nt; int err = 0; list_for_each_entry_safe(table, nt, &nft_net->tables, list) { @@ -1345,7 +1343,7 @@ nft_chain_lookup_byhandle(const struct nft_table *table, u64 handle, u8 genmask) static bool lockdep_commit_lock_is_held(const struct net *net) { #ifdef CONFIG_PROVE_LOCKING - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); return lockdep_is_held(&nft_net->commit_mutex); #else @@ -1570,7 +1568,7 @@ static void nf_tables_chain_notify(const struct nft_ctx *ctx, int event) goto err; } - nft_net = net_generic(ctx->net, nf_tables_net_id); + nft_net = nft_pernet(ctx->net); nft_notify_enqueue(skb, ctx->report, &nft_net->notify_list); return; err: @@ -1581,15 +1579,15 @@ static int nf_tables_dump_chains(struct sk_buff *skb, struct netlink_callback *cb) { const struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh); - const struct nft_table *table; - const struct nft_chain *chain; unsigned int idx = 0, s_idx = cb->args[0]; struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; struct nftables_pernet *nft_net; + const struct nft_table *table; + const struct nft_chain *chain; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); cb->seq = nft_net->base_seq; list_for_each_entry_rcu(table, &nft_net->tables, list) { @@ -1908,7 +1906,7 @@ static int nft_chain_parse_hook(struct net *net, struct nft_chain_hook *hook, u8 family, bool autoload) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nlattr *ha[NFTA_HOOK_MAX + 1]; const struct nft_chain_type *type; int err; @@ -2302,7 +2300,7 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy, if (nla[NFTA_CHAIN_HANDLE] && nla[NFTA_CHAIN_NAME]) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(ctx->net); struct nft_trans *tmp; char *name; @@ -2338,7 +2336,7 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy, static struct nft_chain *nft_chain_lookup_byid(const struct net *net, const struct nlattr *nla) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); u32 id = ntohl(nla_get_be32(nla)); struct nft_trans *trans; @@ -2357,7 +2355,7 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); u8 genmask = nft_genmask_next(net); int family = nfmsg->nfgen_family; @@ -2908,7 +2906,7 @@ static int nf_tables_fill_rule_info(struct sk_buff *skb, struct net *net, static void nf_tables_rule_notify(const struct nft_ctx *ctx, const struct nft_rule *rule, int event) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(ctx->net); struct sk_buff *skb; int err; @@ -2989,7 +2987,7 @@ static int nf_tables_dump_rules(struct sk_buff *skb, struct nftables_pernet *nft_net; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); cb->seq = nft_net->base_seq; list_for_each_entry_rcu(table, &nft_net->tables, list) { @@ -3223,7 +3221,7 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); u8 genmask = nft_genmask_next(net); struct nft_expr_info *info = NULL; @@ -3442,7 +3440,7 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, static struct nft_rule *nft_rule_lookup_byid(const struct net *net, const struct nlattr *nla) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); u32 id = ntohl(nla_get_be32(nla)); struct nft_trans *trans; @@ -3559,7 +3557,7 @@ nft_select_set_ops(const struct nft_ctx *ctx, const struct nft_set_desc *desc, enum nft_set_policies policy) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(ctx->net); const struct nft_set_ops *ops, *bops; struct nft_set_estimate est, best; const struct nft_set_type *type; @@ -3704,9 +3702,9 @@ static struct nft_set *nft_set_lookup_byhandle(const struct nft_table *table, static struct nft_set *nft_set_lookup_byid(const struct net *net, const struct nlattr *nla, u8 genmask) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); - struct nft_trans *trans; + struct nftables_pernet *nft_net = nft_pernet(net); u32 id = ntohl(nla_get_be32(nla)); + struct nft_trans *trans; list_for_each_entry(trans, &nft_net->commit_list, list) { if (trans->msg_type == NFT_MSG_NEWSET) { @@ -3942,7 +3940,7 @@ static void nf_tables_set_notify(const struct nft_ctx *ctx, const struct nft_set *set, int event, gfp_t gfp_flags) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(ctx->net); struct sk_buff *skb; u32 portid = ctx->portid; int err; @@ -3980,7 +3978,7 @@ static int nf_tables_dump_sets(struct sk_buff *skb, struct netlink_callback *cb) return skb->len; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); cb->seq = nft_net->base_seq; list_for_each_entry_rcu(table, &nft_net->tables, list) { @@ -4833,7 +4831,7 @@ static int nf_tables_dump_set(struct sk_buff *skb, struct netlink_callback *cb) int event; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); list_for_each_entry_rcu(table, &nft_net->tables, list) { if (dump_ctx->ctx.family != NFPROTO_UNSPEC && dump_ctx->ctx.family != table->family) @@ -5138,7 +5136,7 @@ static void nf_tables_setelem_notify(const struct nft_ctx *ctx, goto err; } - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); nft_notify_enqueue(skb, ctx->report, &nft_net->notify_list); return; err: @@ -5660,7 +5658,7 @@ static int nf_tables_newsetelem(struct net *net, struct sock *nlsk, const struct nlattr * const nla[], struct netlink_ext_ack *extack) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); u8 genmask = nft_genmask_next(net); const struct nlattr *attr; struct nft_set *set; @@ -6323,7 +6321,7 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) reset = true; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); cb->seq = nft_net->base_seq; list_for_each_entry_rcu(table, &nft_net->tables, list) { @@ -6473,7 +6471,7 @@ static int nf_tables_getobj(struct net *net, struct sock *nlsk, const struct nftables_pernet *nft_net; char *buf; - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); buf = kasprintf(GFP_ATOMIC, "%s:%u", table->name, nft_net->base_seq); audit_log_nfcfg(buf, @@ -6560,7 +6558,7 @@ void nft_obj_notify(struct net *net, const struct nft_table *table, struct nft_object *obj, u32 portid, u32 seq, int event, int family, int report, gfp_t gfp) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct sk_buff *skb; int err; char *buf = kasprintf(gfp, "%s:%u", @@ -7246,7 +7244,7 @@ static int nf_tables_dump_flowtable(struct sk_buff *skb, const struct nft_table *table; rcu_read_lock(); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); cb->seq = nft_net->base_seq; list_for_each_entry_rcu(table, &nft_net->tables, list) { @@ -7384,7 +7382,7 @@ static void nf_tables_flowtable_notify(struct nft_ctx *ctx, struct list_head *hook_list, int event) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(ctx->net); struct sk_buff *skb; int err; @@ -7429,7 +7427,7 @@ static void nf_tables_flowtable_destroy(struct nft_flowtable *flowtable) static int nf_tables_fill_gen_info(struct sk_buff *skb, struct net *net, u32 portid, u32 seq) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nlmsghdr *nlh; char buf[TASK_COMM_LEN]; int event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_NEWGEN); @@ -7482,7 +7480,7 @@ static int nf_tables_flowtable_event(struct notifier_block *this, return 0; net = dev_net(dev); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); mutex_lock(&nft_net->commit_mutex); list_for_each_entry(table, &nft_net->tables, list) { list_for_each_entry(flowtable, &table->flowtables, list) { @@ -7670,7 +7668,7 @@ static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = { static int nf_tables_validate(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_table *table; switch (nft_net->validate_state) { @@ -7855,7 +7853,7 @@ static int nf_tables_commit_chain_prepare(struct net *net, struct nft_chain *cha static void nf_tables_commit_chain_prepare_cancel(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_trans *trans, *next; list_for_each_entry_safe(trans, next, &nft_net->commit_list, list) { @@ -7967,7 +7965,7 @@ static void nft_flowtable_hooks_del(struct nft_flowtable *flowtable, static void nf_tables_module_autoload_cleanup(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_module_request *req, *next; WARN_ON_ONCE(!list_empty(&nft_net->commit_list)); @@ -7980,7 +7978,7 @@ static void nf_tables_module_autoload_cleanup(struct net *net) static void nf_tables_commit_release(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_trans *trans; /* all side effects have to be made visible. @@ -8014,7 +8012,7 @@ static void nf_tables_commit_release(struct net *net) static void nft_commit_notify(struct net *net, u32 portid) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct sk_buff *batch_skb = NULL, *nskb, *skb; unsigned char *data; int len; @@ -8101,7 +8099,7 @@ static void nf_tables_commit_audit_log(struct list_head *adl, u32 generation) static int nf_tables_commit(struct net *net, struct sk_buff *skb) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_trans *trans, *next; struct nft_trans_elem *te; struct nft_chain *chain; @@ -8322,7 +8320,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) static void nf_tables_module_autoload(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_module_request *req, *next; LIST_HEAD(module_list); @@ -8370,7 +8368,7 @@ static void nf_tables_abort_release(struct nft_trans *trans) static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_trans *trans, *next; struct nft_trans_elem *te; struct nft_hook *hook; @@ -8524,7 +8522,7 @@ static void nf_tables_cleanup(struct net *net) static int nf_tables_abort(struct net *net, struct sk_buff *skb, enum nfnl_abort_action action) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); int ret = __nf_tables_abort(net, action); mutex_unlock(&nft_net->commit_mutex); @@ -8534,7 +8532,7 @@ static int nf_tables_abort(struct net *net, struct sk_buff *skb, static bool nf_tables_valid_genid(struct net *net, u32 genid) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); bool genid_ok; mutex_lock(&nft_net->commit_mutex); @@ -9096,7 +9094,7 @@ static void __nft_release_hook(struct net *net, struct nft_table *table) static void __nft_release_hooks(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_table *table; list_for_each_entry(table, &nft_net->tables, list) { @@ -9156,7 +9154,7 @@ static void __nft_release_table(struct net *net, struct nft_table *table) static void __nft_release_tables(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_table *table, *nt; list_for_each_entry_safe(table, nt, &nft_net->tables, list) { @@ -9179,7 +9177,7 @@ static int nft_rcv_nl_event(struct notifier_block *this, unsigned long event, if (event != NETLINK_URELEASE || n->protocol != NETLINK_NETFILTER) return NOTIFY_DONE; - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); mutex_lock(&nft_net->commit_mutex); list_for_each_entry(table, &nft_net->tables, list) { if (nft_table_has_owner(table) && @@ -9207,7 +9205,7 @@ static struct notifier_block nft_nl_notifier = { static int __net_init nf_tables_init_net(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); INIT_LIST_HEAD(&nft_net->tables); INIT_LIST_HEAD(&nft_net->commit_list); @@ -9227,7 +9225,7 @@ static void __net_exit nf_tables_pre_exit_net(struct net *net) static void __net_exit nf_tables_exit_net(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); mutex_lock(&nft_net->commit_mutex); if (!list_empty(&nft_net->commit_list)) diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c index 19215e81dd66..a48c5fd53a80 100644 --- a/net/netfilter/nf_tables_offload.c +++ b/net/netfilter/nf_tables_offload.c @@ -7,8 +7,6 @@ #include <net/netfilter/nf_tables_offload.h> #include <net/pkt_cls.h> -extern unsigned int nf_tables_net_id; - static struct nft_flow_rule *nft_flow_rule_alloc(int num_actions) { struct nft_flow_rule *flow; @@ -389,7 +387,7 @@ static void nft_indr_block_cleanup(struct flow_block_cb *block_cb) nft_flow_block_offload_init(&bo, dev_net(dev), FLOW_BLOCK_UNBIND, basechain, &extack); - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); mutex_lock(&nft_net->commit_mutex); list_del(&block_cb->driver_list); list_move(&block_cb->list, &bo.cb_list); @@ -490,7 +488,7 @@ static int nft_flow_offload_chain(struct nft_chain *chain, u8 *ppolicy, static void nft_flow_rule_offload_abort(struct net *net, struct nft_trans *trans) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); int err = 0; list_for_each_entry_continue_reverse(trans, &nft_net->commit_list, list) { @@ -539,7 +537,7 @@ static void nft_flow_rule_offload_abort(struct net *net, int nft_flow_rule_offload_commit(struct net *net) { - struct nftables_pernet *nft_net = net_generic(net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(net); struct nft_trans *trans; int err = 0; u8 policy; @@ -663,7 +661,7 @@ static int nft_offload_netdev_event(struct notifier_block *this, if (event != NETDEV_UNREGISTER) return NOTIFY_DONE; - nft_net = net_generic(net, nf_tables_net_id); + nft_net = nft_pernet(net); mutex_lock(&nft_net->commit_mutex); chain = __nft_offload_get_chain(nft_net, dev); if (chain) diff --git a/net/netfilter/nft_chain_filter.c b/net/netfilter/nft_chain_filter.c index 7a9aa57b195b..363bdd7044ec 100644 --- a/net/netfilter/nft_chain_filter.c +++ b/net/netfilter/nft_chain_filter.c @@ -2,7 +2,6 @@ #include <linux/kernel.h> #include <linux/netdevice.h> #include <net/net_namespace.h> -#include <net/netns/generic.h> #include <net/netfilter/nf_tables.h> #include <linux/netfilter_ipv4.h> #include <linux/netfilter_ipv6.h> @@ -11,8 +10,6 @@ #include <net/netfilter/nf_tables_ipv4.h> #include <net/netfilter/nf_tables_ipv6.h> -extern unsigned int nf_tables_net_id; - #ifdef CONFIG_NF_TABLES_IPV4 static unsigned int nft_do_chain_ipv4(void *priv, struct sk_buff *skb, @@ -369,7 +366,7 @@ static int nf_tables_netdev_event(struct notifier_block *this, event != NETDEV_CHANGENAME) return NOTIFY_DONE; - nft_net = net_generic(ctx.net, nf_tables_net_id); + nft_net = nft_pernet(ctx.net); mutex_lock(&nft_net->commit_mutex); list_for_each_entry(table, &nft_net->tables, list) { if (table->family != NFPROTO_NETDEV) diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c index f9437a0dcfef..6ba3256fa844 100644 --- a/net/netfilter/nft_dynset.c +++ b/net/netfilter/nft_dynset.c @@ -11,9 +11,6 @@ #include <linux/netfilter/nf_tables.h> #include <net/netfilter/nf_tables.h> #include <net/netfilter/nf_tables_core.h> -#include <net/netns/generic.h> - -extern unsigned int nf_tables_net_id; struct nft_dynset { struct nft_set *set; @@ -164,7 +161,7 @@ static int nft_dynset_init(const struct nft_ctx *ctx, const struct nft_expr *expr, const struct nlattr * const tb[]) { - struct nftables_pernet *nft_net = net_generic(ctx->net, nf_tables_net_id); + struct nftables_pernet *nft_net = nft_pernet(ctx->net); struct nft_dynset *priv = nft_expr_priv(expr); u8 genmask = nft_genmask_next(ctx->net); struct nft_set *set;

[net-next,17/22] netfilter: nftables: add nft_pernet() helper function

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