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netfilter: ipv4: prefer skb_ensure_writable

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.. so skb_make_writable can be removed soon.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Florian Westphal 2019-05-23 15:44:08 +02:00 committed by Pablo Neira Ayuso
parent 86f0453854
commit 3862c6a91a
5 changed files with 6 additions and 6 deletions
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2
net/ipv4/netfilter/arpt_mangle.c
View File

@ -17,7 +17,7 @@ target(struct sk_buff *skb, const struct xt_action_param *par)
unsigned char *arpptr;
int pln, hln;
if (!skb_make_writable(skb, skb->len))
if (skb_ensure_writable(skb, skb->len))
return NF_DROP;
arp = arp_hdr(skb);

4
net/ipv4/netfilter/ipt_ECN.c
View File

@ -32,7 +32,7 @@ set_ect_ip(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
if ((iph->tos & IPT_ECN_IP_MASK) != (einfo->ip_ect & IPT_ECN_IP_MASK)) {
__u8 oldtos;
if (!skb_make_writable(skb, sizeof(struct iphdr)))
if (skb_ensure_writable(skb, sizeof(struct iphdr)))
return false;
iph = ip_hdr(skb);
oldtos = iph->tos;
@ -61,7 +61,7 @@ set_ect_tcp(struct sk_buff *skb, const struct ipt_ECN_info *einfo)
tcph->cwr == einfo->proto.tcp.cwr))
return true;
if (!skb_make_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
if (skb_ensure_writable(skb, ip_hdrlen(skb) + sizeof(*tcph)))
return false;
tcph = (void *)ip_hdr(skb) + ip_hdrlen(skb);

2
net/ipv4/netfilter/nf_nat_h323.c
View File

@ -59,7 +59,7 @@ static int set_addr(struct sk_buff *skb, unsigned int protoff,
net_notice_ratelimited("nf_nat_h323: nf_nat_mangle_udp_packet error\n");
return -1;
}
/* nf_nat_mangle_udp_packet uses skb_make_writable() to copy
/* nf_nat_mangle_udp_packet uses skb_ensure_writable() to copy
* or pull everything in a linear buffer, so we can safely
* use the skb pointers now */
*data = skb->data + ip_hdrlen(skb) + sizeof(struct udphdr);

2
net/ipv4/netfilter/nf_nat_snmp_basic_main.c
View File

@ -186,7 +186,7 @@ static int help(struct sk_buff *skb, unsigned int protoff,
return NF_DROP;
}
if (!skb_make_writable(skb, skb->len)) {
if (skb_ensure_writable(skb, skb->len)) {
nf_ct_helper_log(skb, ct, "cannot mangle packet");
return NF_DROP;
}

2
net/netfilter/nf_nat_sip.c
View File

@ -285,7 +285,7 @@ static unsigned int nf_nat_sip(struct sk_buff *skb, unsigned int protoff,
if (dir == IP_CT_DIR_REPLY && ct_sip_info->forced_dport) {
struct udphdr *uh;
if (!skb_make_writable(skb, skb->len)) {
if (skb_ensure_writable(skb, skb->len)) {
nf_ct_helper_log(skb, ct, "cannot mangle packet");
return NF_DROP;
}