[PATCH nf-next 08/15] netfilter: arp_tables: allow use of arpt_do_table as hookfn
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2021-10-17 22:15:53
Also in:
netfilter-devel
Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Florian Westphal <fw@strlen.de> This is possible now that the xt_table structure is passed in via *priv. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- include/linux/netfilter_arp/arp_tables.h | 5 ++--- net/ipv4/netfilter/arp_tables.c | 7 ++++--- net/ipv4/netfilter/arptable_filter.c | 10 +--------- 3 files changed, 7 insertions(+), 15 deletions(-)
diff --git a/include/linux/netfilter_arp/arp_tables.h b/include/linux/netfilter_arp/arp_tables.h
index 4f9a4b3c5892..a40aaf645fa4 100644
--- a/include/linux/netfilter_arp/arp_tables.h
+++ b/include/linux/netfilter_arp/arp_tables.h@@ -54,9 +54,8 @@ int arpt_register_table(struct net *net, const struct xt_table *table, const struct nf_hook_ops *ops); void arpt_unregister_table(struct net *net, const char *name); void arpt_unregister_table_pre_exit(struct net *net, const char *name); -extern unsigned int arpt_do_table(struct sk_buff *skb, - const struct nf_hook_state *state, - struct xt_table *table); +extern unsigned int arpt_do_table(void *priv, struct sk_buff *skb, + const struct nf_hook_state *state); #ifdef CONFIG_NETFILTER_XTABLES_COMPAT #include <net/compat.h>
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index c53f14b94356..ffc0cab7cf18 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c@@ -179,10 +179,11 @@ struct arpt_entry *arpt_next_entry(const struct arpt_entry *entry) return (void *)entry + entry->next_offset; } -unsigned int arpt_do_table(struct sk_buff *skb, - const struct nf_hook_state *state, - struct xt_table *table) +unsigned int arpt_do_table(void *priv, + struct sk_buff *skb, + const struct nf_hook_state *state) { + const struct xt_table *table = priv; unsigned int hook = state->hook; static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long)))); unsigned int verdict = NF_DROP;
diff --git a/net/ipv4/netfilter/arptable_filter.c b/net/ipv4/netfilter/arptable_filter.c
index 3de78416ec76..78cd5ee24448 100644
--- a/net/ipv4/netfilter/arptable_filter.c
+++ b/net/ipv4/netfilter/arptable_filter.c@@ -26,14 +26,6 @@ static const struct xt_table packet_filter = { .priority = NF_IP_PRI_FILTER, }; -/* The work comes in here from netfilter.c */ -static unsigned int -arptable_filter_hook(void *priv, struct sk_buff *skb, - const struct nf_hook_state *state) -{ - return arpt_do_table(skb, state, priv); -} - static struct nf_hook_ops *arpfilter_ops __read_mostly; static int arptable_filter_table_init(struct net *net)
@@ -72,7 +64,7 @@ static int __init arptable_filter_init(void) if (ret < 0) return ret; - arpfilter_ops = xt_hook_ops_alloc(&packet_filter, arptable_filter_hook); + arpfilter_ops = xt_hook_ops_alloc(&packet_filter, arpt_do_table); if (IS_ERR(arpfilter_ops)) { xt_unregister_template(&packet_filter); return PTR_ERR(arpfilter_ops);
--
2.30.2