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Message-Id: <20210601220629.18307-14-pablo@netfilter.org>
Date: Wed, 2 Jun 2021 00:06:26 +0200
From: Pablo Neira Ayuso <pablo@...filter.org>
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org, kuba@...nel.org
Subject: [PATCH net-next 13/16] netfilter: nf_tables: remove unused arg in nft_set_pktinfo_unspec()
From: Florian Westphal <fw@...len.de>
The functions pass extra skb arg, but either its not used or the helpers
can already access it via pkt->skb.
Signed-off-by: Florian Westphal <fw@...len.de>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
include/net/netfilter/nf_tables.h | 3 +--
include/net/netfilter/nf_tables_ipv4.h | 28 +++++++++++-------------
include/net/netfilter/nf_tables_ipv6.h | 30 +++++++++++---------------
net/netfilter/nft_chain_filter.c | 26 +++++++++++-----------
net/netfilter/nft_chain_nat.c | 4 ++--
net/netfilter/nft_chain_route.c | 4 ++--
6 files changed, 43 insertions(+), 52 deletions(-)
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 10c1b8759990..958b8e68bb1a 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -72,8 +72,7 @@ static inline void nft_set_pktinfo(struct nft_pktinfo *pkt,
pkt->xt.state = state;
}
-static inline void nft_set_pktinfo_unspec(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline void nft_set_pktinfo_unspec(struct nft_pktinfo *pkt)
{
pkt->tprot_set = false;
pkt->tprot = 0;
diff --git a/include/net/netfilter/nf_tables_ipv4.h b/include/net/netfilter/nf_tables_ipv4.h
index 1f7bea39ad1b..b185a9216bf1 100644
--- a/include/net/netfilter/nf_tables_ipv4.h
+++ b/include/net/netfilter/nf_tables_ipv4.h
@@ -5,8 +5,7 @@
#include <net/netfilter/nf_tables.h>
#include <net/ip.h>
-static inline void nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline void nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt)
{
struct iphdr *ip;
@@ -17,14 +16,13 @@ static inline void nft_set_pktinfo_ipv4(struct nft_pktinfo *pkt,
pkt->xt.fragoff = ntohs(ip->frag_off) & IP_OFFSET;
}
-static inline int __nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline int __nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt)
{
struct iphdr *iph, _iph;
u32 len, thoff;
- iph = skb_header_pointer(skb, skb_network_offset(skb), sizeof(*iph),
- &_iph);
+ iph = skb_header_pointer(pkt->skb, skb_network_offset(pkt->skb),
+ sizeof(*iph), &_iph);
if (!iph)
return -1;
@@ -33,7 +31,7 @@ static inline int __nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt,
len = ntohs(iph->tot_len);
thoff = iph->ihl * 4;
- if (skb->len < len)
+ if (pkt->skb->len < len)
return -1;
else if (len < thoff)
return -1;
@@ -46,29 +44,27 @@ static inline int __nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt,
return 0;
}
-static inline void nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline void nft_set_pktinfo_ipv4_validate(struct nft_pktinfo *pkt)
{
- if (__nft_set_pktinfo_ipv4_validate(pkt, skb) < 0)
- nft_set_pktinfo_unspec(pkt, skb);
+ if (__nft_set_pktinfo_ipv4_validate(pkt) < 0)
+ nft_set_pktinfo_unspec(pkt);
}
-static inline int nft_set_pktinfo_ipv4_ingress(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline int nft_set_pktinfo_ipv4_ingress(struct nft_pktinfo *pkt)
{
struct iphdr *iph;
u32 len, thoff;
- if (!pskb_may_pull(skb, sizeof(*iph)))
+ if (!pskb_may_pull(pkt->skb, sizeof(*iph)))
return -1;
- iph = ip_hdr(skb);
+ iph = ip_hdr(pkt->skb);
if (iph->ihl < 5 || iph->version != 4)
goto inhdr_error;
len = ntohs(iph->tot_len);
thoff = iph->ihl * 4;
- if (skb->len < len) {
+ if (pkt->skb->len < len) {
__IP_INC_STATS(nft_net(pkt), IPSTATS_MIB_INTRUNCATEDPKTS);
return -1;
} else if (len < thoff) {
diff --git a/include/net/netfilter/nf_tables_ipv6.h b/include/net/netfilter/nf_tables_ipv6.h
index 867de29f3f7a..bf132d488b17 100644
--- a/include/net/netfilter/nf_tables_ipv6.h
+++ b/include/net/netfilter/nf_tables_ipv6.h
@@ -6,8 +6,7 @@
#include <net/ipv6.h>
#include <net/netfilter/nf_tables.h>
-static inline void nft_set_pktinfo_ipv6(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline void nft_set_pktinfo_ipv6(struct nft_pktinfo *pkt)
{
unsigned int flags = IP6_FH_F_AUTH;
int protohdr, thoff = 0;
@@ -15,7 +14,7 @@ static inline void nft_set_pktinfo_ipv6(struct nft_pktinfo *pkt,
protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, &flags);
if (protohdr < 0) {
- nft_set_pktinfo_unspec(pkt, skb);
+ nft_set_pktinfo_unspec(pkt);
return;
}
@@ -25,8 +24,7 @@ static inline void nft_set_pktinfo_ipv6(struct nft_pktinfo *pkt,
pkt->xt.fragoff = frag_off;
}
-static inline int __nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline int __nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt)
{
#if IS_ENABLED(CONFIG_IPV6)
unsigned int flags = IP6_FH_F_AUTH;
@@ -36,8 +34,8 @@ static inline int __nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt,
int protohdr;
u32 pkt_len;
- ip6h = skb_header_pointer(skb, skb_network_offset(skb), sizeof(*ip6h),
- &_ip6h);
+ ip6h = skb_header_pointer(pkt->skb, skb_network_offset(pkt->skb),
+ sizeof(*ip6h), &_ip6h);
if (!ip6h)
return -1;
@@ -45,7 +43,7 @@ static inline int __nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt,
return -1;
pkt_len = ntohs(ip6h->payload_len);
- if (pkt_len + sizeof(*ip6h) > skb->len)
+ if (pkt_len + sizeof(*ip6h) > pkt->skb->len)
return -1;
protohdr = ipv6_find_hdr(pkt->skb, &thoff, -1, &frag_off, &flags);
@@ -63,15 +61,13 @@ static inline int __nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt,
#endif
}
-static inline void nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline void nft_set_pktinfo_ipv6_validate(struct nft_pktinfo *pkt)
{
- if (__nft_set_pktinfo_ipv6_validate(pkt, skb) < 0)
- nft_set_pktinfo_unspec(pkt, skb);
+ if (__nft_set_pktinfo_ipv6_validate(pkt) < 0)
+ nft_set_pktinfo_unspec(pkt);
}
-static inline int nft_set_pktinfo_ipv6_ingress(struct nft_pktinfo *pkt,
- struct sk_buff *skb)
+static inline int nft_set_pktinfo_ipv6_ingress(struct nft_pktinfo *pkt)
{
#if IS_ENABLED(CONFIG_IPV6)
unsigned int flags = IP6_FH_F_AUTH;
@@ -82,15 +78,15 @@ static inline int nft_set_pktinfo_ipv6_ingress(struct nft_pktinfo *pkt,
int protohdr;
u32 pkt_len;
- if (!pskb_may_pull(skb, sizeof(*ip6h)))
+ if (!pskb_may_pull(pkt->skb, sizeof(*ip6h)))
return -1;
- ip6h = ipv6_hdr(skb);
+ ip6h = ipv6_hdr(pkt->skb);
if (ip6h->version != 6)
goto inhdr_error;
pkt_len = ntohs(ip6h->payload_len);
- if (pkt_len + sizeof(*ip6h) > skb->len) {
+ if (pkt_len + sizeof(*ip6h) > pkt->skb->len) {
idev = __in6_dev_get(nft_in(pkt));
__IP6_INC_STATS(nft_net(pkt), idev, IPSTATS_MIB_INTRUNCATEDPKTS);
return -1;
diff --git a/net/netfilter/nft_chain_filter.c b/net/netfilter/nft_chain_filter.c
index 363bdd7044ec..5b02408a920b 100644
--- a/net/netfilter/nft_chain_filter.c
+++ b/net/netfilter/nft_chain_filter.c
@@ -18,7 +18,7 @@ static unsigned int nft_do_chain_ipv4(void *priv,
struct nft_pktinfo pkt;
nft_set_pktinfo(&pkt, skb, state);
- nft_set_pktinfo_ipv4(&pkt, skb);
+ nft_set_pktinfo_ipv4(&pkt);
return nft_do_chain(&pkt, priv);
}
@@ -62,7 +62,7 @@ static unsigned int nft_do_chain_arp(void *priv, struct sk_buff *skb,
struct nft_pktinfo pkt;
nft_set_pktinfo(&pkt, skb, state);
- nft_set_pktinfo_unspec(&pkt, skb);
+ nft_set_pktinfo_unspec(&pkt);
return nft_do_chain(&pkt, priv);
}
@@ -102,7 +102,7 @@ static unsigned int nft_do_chain_ipv6(void *priv,
struct nft_pktinfo pkt;
nft_set_pktinfo(&pkt, skb, state);
- nft_set_pktinfo_ipv6(&pkt, skb);
+ nft_set_pktinfo_ipv6(&pkt);
return nft_do_chain(&pkt, priv);
}
@@ -149,10 +149,10 @@ static unsigned int nft_do_chain_inet(void *priv, struct sk_buff *skb,
switch (state->pf) {
case NFPROTO_IPV4:
- nft_set_pktinfo_ipv4(&pkt, skb);
+ nft_set_pktinfo_ipv4(&pkt);
break;
case NFPROTO_IPV6:
- nft_set_pktinfo_ipv6(&pkt, skb);
+ nft_set_pktinfo_ipv6(&pkt);
break;
default:
break;
@@ -174,7 +174,7 @@ static unsigned int nft_do_chain_inet_ingress(void *priv, struct sk_buff *skb,
ingress_state.hook = NF_INET_INGRESS;
nft_set_pktinfo(&pkt, skb, &ingress_state);
- if (nft_set_pktinfo_ipv4_ingress(&pkt, skb) < 0)
+ if (nft_set_pktinfo_ipv4_ingress(&pkt) < 0)
return NF_DROP;
break;
case htons(ETH_P_IPV6):
@@ -182,7 +182,7 @@ static unsigned int nft_do_chain_inet_ingress(void *priv, struct sk_buff *skb,
ingress_state.hook = NF_INET_INGRESS;
nft_set_pktinfo(&pkt, skb, &ingress_state);
- if (nft_set_pktinfo_ipv6_ingress(&pkt, skb) < 0)
+ if (nft_set_pktinfo_ipv6_ingress(&pkt) < 0)
return NF_DROP;
break;
default:
@@ -238,13 +238,13 @@ nft_do_chain_bridge(void *priv,
switch (eth_hdr(skb)->h_proto) {
case htons(ETH_P_IP):
- nft_set_pktinfo_ipv4_validate(&pkt, skb);
+ nft_set_pktinfo_ipv4_validate(&pkt);
break;
case htons(ETH_P_IPV6):
- nft_set_pktinfo_ipv6_validate(&pkt, skb);
+ nft_set_pktinfo_ipv6_validate(&pkt);
break;
default:
- nft_set_pktinfo_unspec(&pkt, skb);
+ nft_set_pktinfo_unspec(&pkt);
break;
}
@@ -293,13 +293,13 @@ static unsigned int nft_do_chain_netdev(void *priv, struct sk_buff *skb,
switch (skb->protocol) {
case htons(ETH_P_IP):
- nft_set_pktinfo_ipv4_validate(&pkt, skb);
+ nft_set_pktinfo_ipv4_validate(&pkt);
break;
case htons(ETH_P_IPV6):
- nft_set_pktinfo_ipv6_validate(&pkt, skb);
+ nft_set_pktinfo_ipv6_validate(&pkt);
break;
default:
- nft_set_pktinfo_unspec(&pkt, skb);
+ nft_set_pktinfo_unspec(&pkt);
break;
}
diff --git a/net/netfilter/nft_chain_nat.c b/net/netfilter/nft_chain_nat.c
index eac4a901233f..98e4946100c5 100644
--- a/net/netfilter/nft_chain_nat.c
+++ b/net/netfilter/nft_chain_nat.c
@@ -17,12 +17,12 @@ static unsigned int nft_nat_do_chain(void *priv, struct sk_buff *skb,
switch (state->pf) {
#ifdef CONFIG_NF_TABLES_IPV4
case NFPROTO_IPV4:
- nft_set_pktinfo_ipv4(&pkt, skb);
+ nft_set_pktinfo_ipv4(&pkt);
break;
#endif
#ifdef CONFIG_NF_TABLES_IPV6
case NFPROTO_IPV6:
- nft_set_pktinfo_ipv6(&pkt, skb);
+ nft_set_pktinfo_ipv6(&pkt);
break;
#endif
default:
diff --git a/net/netfilter/nft_chain_route.c b/net/netfilter/nft_chain_route.c
index edd02cda57fc..925db0dce48d 100644
--- a/net/netfilter/nft_chain_route.c
+++ b/net/netfilter/nft_chain_route.c
@@ -26,7 +26,7 @@ static unsigned int nf_route_table_hook4(void *priv,
u8 tos;
nft_set_pktinfo(&pkt, skb, state);
- nft_set_pktinfo_ipv4(&pkt, skb);
+ nft_set_pktinfo_ipv4(&pkt);
mark = skb->mark;
iph = ip_hdr(skb);
@@ -74,7 +74,7 @@ static unsigned int nf_route_table_hook6(void *priv,
int err;
nft_set_pktinfo(&pkt, skb, state);
- nft_set_pktinfo_ipv6(&pkt, skb);
+ nft_set_pktinfo_ipv6(&pkt);
/* save source/dest address, mark, hoplimit, flowlabel, priority */
memcpy(&saddr, &ipv6_hdr(skb)->saddr, sizeof(saddr));
--
2.30.2
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