diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-05-20 13:42:44 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-05-27 22:20:34 +0200 |
| commit | d9246a53752fdb777ed176d5f091c4ac0e482bba (patch) | |
| tree | 5972e60fb1586cf11c0993d72fb20b30cd5016fc /net | |
| parent | cb8aa9a3affb7d23b11b11fbed41e2feaabc4b0a (diff) | |
netfilter: nf_tables: generalise flowtable hook parsing
Update nft_flowtable_parse_hook() to take the flowtable hook list as
parameter. This allows to reuse this function to update the hooks.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_tables_api.c | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 3558e76e2733..87945b4a6789 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -6178,21 +6178,30 @@ nft_flowtable_lookup_byhandle(const struct nft_table *table, return ERR_PTR(-ENOENT); } +struct nft_flowtable_hook { + u32 num; + int priority; + struct list_head list; +}; + static const struct nla_policy nft_flowtable_hook_policy[NFTA_FLOWTABLE_HOOK_MAX + 1] = { [NFTA_FLOWTABLE_HOOK_NUM] = { .type = NLA_U32 }, [NFTA_FLOWTABLE_HOOK_PRIORITY] = { .type = NLA_U32 }, [NFTA_FLOWTABLE_HOOK_DEVS] = { .type = NLA_NESTED }, }; -static int nf_tables_flowtable_parse_hook(const struct nft_ctx *ctx, - const struct nlattr *attr, - struct nft_flowtable *flowtable) +static int nft_flowtable_parse_hook(const struct nft_ctx *ctx, + const struct nlattr *attr, + struct nft_flowtable_hook *flowtable_hook, + struct nf_flowtable *ft) { struct nlattr *tb[NFTA_FLOWTABLE_HOOK_MAX + 1]; struct nft_hook *hook; int hooknum, priority; int err; + INIT_LIST_HEAD(&flowtable_hook->list); + err = nla_parse_nested_deprecated(tb, NFTA_FLOWTABLE_HOOK_MAX, attr, nft_flowtable_hook_policy, NULL); if (err < 0) @@ -6211,19 +6220,19 @@ static int nf_tables_flowtable_parse_hook(const struct nft_ctx *ctx, err = nf_tables_parse_netdev_hooks(ctx->net, tb[NFTA_FLOWTABLE_HOOK_DEVS], - &flowtable->hook_list); + &flowtable_hook->list); if (err < 0) return err; - flowtable->hooknum = hooknum; - flowtable->data.priority = priority; + flowtable_hook->priority = priority; + flowtable_hook->num = hooknum; - list_for_each_entry(hook, &flowtable->hook_list, list) { + list_for_each_entry(hook, &flowtable_hook->list, list) { hook->ops.pf = NFPROTO_NETDEV; hook->ops.hooknum = hooknum; hook->ops.priority = priority; - hook->ops.priv = &flowtable->data; - hook->ops.hook = flowtable->data.type->hook; + hook->ops.priv = ft; + hook->ops.hook = ft->type->hook; } return err; @@ -6336,6 +6345,7 @@ static int nf_tables_newflowtable(struct net *net, struct sock *nlsk, struct netlink_ext_ack *extack) { const struct nfgenmsg *nfmsg = nlmsg_data(nlh); + struct nft_flowtable_hook flowtable_hook; const struct nf_flowtable_type *type; u8 genmask = nft_genmask_next(net); int family = nfmsg->nfgen_family; @@ -6409,11 +6419,15 @@ static int nf_tables_newflowtable(struct net *net, struct sock *nlsk, if (err < 0) goto err3; - err = nf_tables_flowtable_parse_hook(&ctx, nla[NFTA_FLOWTABLE_HOOK], - flowtable); + err = nft_flowtable_parse_hook(&ctx, nla[NFTA_FLOWTABLE_HOOK], + &flowtable_hook, &flowtable->data); if (err < 0) goto err4; + list_splice(&flowtable_hook.list, &flowtable->hook_list); + flowtable->data.priority = flowtable_hook.priority; + flowtable->hooknum = flowtable_hook.num; + err = nft_register_flowtable_net_hooks(ctx.net, table, flowtable); if (err < 0) { list_for_each_entry_safe(hook, next, &flowtable->hook_list, list) { |