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netfilter: ipset: use swap macro instead of _manually_ swapping values

Browse source 
Make use of the swap macro and remove unnecessary variables tmp.
This makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Gustavo A. R. Silva 2017-10-30 17:19:25 -05:00 • committed by Pablo Neira Ayuso
commit c045337751
3 changed files with 6 additions and 18 deletions
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8
net/netfilter/ipset/ip_set_bitmap_ip.c
View file

@ -263,12 +263,8 @@ bitmap_ip_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &last_ip);
if (ret)
return ret;
if (first_ip > last_ip) {
u32 tmp = first_ip;
first_ip = last_ip;
last_ip = tmp;
}
if (first_ip > last_ip)
swap(first_ip, last_ip);
} else if (tb[IPSET_ATTR_CIDR]) {
u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);

8
net/netfilter/ipset/ip_set_bitmap_ipmac.c
View file

@ -337,12 +337,8 @@ bitmap_ipmac_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &last_ip);
if (ret)
return ret;
if (first_ip > last_ip) {
u32 tmp = first_ip;
first_ip = last_ip;
last_ip = tmp;
}
if (first_ip > last_ip)
swap(first_ip, last_ip);
} else if (tb[IPSET_ATTR_CIDR]) {
u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);

8
net/netfilter/ipset/ip_set_bitmap_port.c
View file

@ -238,12 +238,8 @@ bitmap_port_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
first_port = ip_set_get_h16(tb[IPSET_ATTR_PORT]);
last_port = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
if (first_port > last_port) {
u16 tmp = first_port;
first_port = last_port;
last_port = tmp;
}
if (first_port > last_port)
swap(first_port, last_port);
elements = last_port - first_port + 1;
set->dsize = ip_set_elem_len(set, tb, 0, 0);