diff options
Diffstat (limited to 'net/netfilter/nf_tables_api.c')
-rw-r--r-- | net/netfilter/nf_tables_api.c | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index d22d00ca78c1..ed17a7c29b86 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -18,6 +18,7 @@ #include <net/netfilter/nf_flow_table.h> #include <net/netfilter/nf_tables_core.h> #include <net/netfilter/nf_tables.h> +#include <net/netfilter/nf_tables_offload.h> #include <net/net_namespace.h> #include <net/sock.h> @@ -97,6 +98,7 @@ static void nft_ctx_init(struct nft_ctx *ctx, ctx->nla = nla; ctx->portid = NETLINK_CB(skb).portid; ctx->report = nlmsg_report(nlh); + ctx->flags = nlh->nlmsg_flags; ctx->seq = nlh->nlmsg_seq; } @@ -1169,6 +1171,7 @@ static const struct nla_policy nft_chain_policy[NFTA_CHAIN_MAX + 1] = { [NFTA_CHAIN_POLICY] = { .type = NLA_U32 }, [NFTA_CHAIN_TYPE] = { .type = NLA_STRING }, [NFTA_CHAIN_COUNTERS] = { .type = NLA_NESTED }, + [NFTA_CHAIN_FLAGS] = { .type = NLA_U32 }, }; static const struct nla_policy nft_hook_policy[NFTA_HOOK_MAX + 1] = { @@ -1603,7 +1606,7 @@ static struct nft_rule **nf_tables_chain_alloc_rules(const struct nft_chain *cha } static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask, - u8 policy) + u8 policy, u32 flags) { const struct nlattr * const *nla = ctx->nla; struct nft_table *table = ctx->table; @@ -1657,8 +1660,9 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask, ops->hook = hook.type->hooks[ops->hooknum]; ops->dev = hook.dev; - chain->flags |= NFT_BASE_CHAIN; + chain->flags |= NFT_BASE_CHAIN | flags; basechain->policy = NF_ACCEPT; + INIT_LIST_HEAD(&basechain->cb_list); } else { chain = kzalloc(sizeof(*chain), GFP_KERNEL); if (chain == NULL) @@ -1718,7 +1722,8 @@ err1: return err; } -static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy) +static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy, + u32 flags) { const struct nlattr * const *nla = ctx->nla; struct nft_table *table = ctx->table; @@ -1730,6 +1735,9 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy) struct nft_trans *trans; int err; + if (chain->flags ^ flags) + return -EOPNOTSUPP; + if (nla[NFTA_CHAIN_HOOK]) { if (!nft_is_base_chain(chain)) return -EBUSY; @@ -1835,6 +1843,7 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, u8 policy = NF_ACCEPT; struct nft_ctx ctx; u64 handle = 0; + u32 flags = 0; lockdep_assert_held(&net->nft.commit_mutex); @@ -1889,6 +1898,9 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, } } + if (nla[NFTA_CHAIN_FLAGS]) + flags = ntohl(nla_get_be32(nla[NFTA_CHAIN_FLAGS])); + nft_ctx_init(&ctx, net, skb, nlh, family, table, chain, nla); if (chain != NULL) { @@ -1899,10 +1911,10 @@ static int nf_tables_newchain(struct net *net, struct sock *nlsk, if (nlh->nlmsg_flags & NLM_F_REPLACE) return -EOPNOTSUPP; - return nf_tables_updchain(&ctx, genmask, policy); + return nf_tables_updchain(&ctx, genmask, policy, flags); } - return nf_tables_addchain(&ctx, family, genmask, policy); + return nf_tables_addchain(&ctx, family, genmask, policy, flags); } static int nf_tables_delchain(struct net *net, struct sock *nlsk, @@ -2658,6 +2670,7 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, u8 genmask = nft_genmask_next(net); struct nft_expr_info *info = NULL; int family = nfmsg->nfgen_family; + struct nft_flow_rule *flow; struct nft_table *table; struct nft_chain *chain; struct nft_rule *rule, *old_rule = NULL; @@ -2804,7 +2817,8 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, list_add_tail_rcu(&rule->list, &old_rule->list); } else { - if (nft_trans_rule_add(&ctx, NFT_MSG_NEWRULE, rule) == NULL) { + trans = nft_trans_rule_add(&ctx, NFT_MSG_NEWRULE, rule); + if (!trans) { err = -ENOMEM; goto err2; } @@ -2827,6 +2841,14 @@ static int nf_tables_newrule(struct net *net, struct sock *nlsk, if (net->nft.validate_state == NFT_VALIDATE_DO) return nft_table_validate(net, table); + if (chain->flags & NFT_CHAIN_HW_OFFLOAD) { + flow = nft_flow_rule_create(rule); + if (IS_ERR(flow)) + return PTR_ERR(flow); + + nft_trans_flow_rule(trans) = flow; + } + return 0; err2: nf_tables_rule_release(&ctx, rule); @@ -6624,6 +6646,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) struct nft_trans_elem *te; struct nft_chain *chain; struct nft_table *table; + int err; if (list_empty(&net->nft.commit_list)) { mutex_unlock(&net->nft.commit_mutex); @@ -6634,6 +6657,10 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb) if (nf_tables_validate(net) < 0) return -EAGAIN; + err = nft_flow_rule_offload_commit(net); + if (err < 0) + return err; + /* 1. Allocate space for next generation rules_gen_X[] */ list_for_each_entry_safe(trans, next, &net->nft.commit_list, list) { int ret; |