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netfilter: nf_nat: make unique_tuple return void 

The only user of unique_tuple() get_unique_tuple() doesn't care about the
return value of unique_tuple(), so make unique_tuple() return void (nothing).

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Changli Gao 2010-08-02 17:20:54 +02:00 committed by Patrick McHardy
parent 794dbc1d71
commit f43dc98b3b
10 changed files with 30 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
include/net/netfilter/nf_nat_protocol.h
View File

@ -27,9 +27,9 @@ struct nf_nat_protocol {
/* Alter the per-proto part of the tuple (depending on
maniptype), to give a unique tuple in the given range if
possible; return false if not. Per-protocol part of tuple
is initialized to the incoming packet. */
bool (*unique_tuple)(struct nf_conntrack_tuple *tuple,
possible. Per-protocol part of tuple is initialized to the
incoming packet. */
void (*unique_tuple)(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct);
@ -63,7 +63,7 @@ extern bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
const union nf_conntrack_man_proto *min,
const union nf_conntrack_man_proto *max);
extern bool nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
extern void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct,

8
net/ipv4/netfilter/nf_nat_proto_common.c
View File

@ -34,7 +34,7 @@ bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
}
EXPORT_SYMBOL_GPL(nf_nat_proto_in_range);
bool nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
void nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct,
@ -53,7 +53,7 @@ bool nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED)) {
/* If it's dst rewrite, can't change port */
if (maniptype == IP_NAT_MANIP_DST)
return false;
return;
if (ntohs(*portptr) < 1024) {
/* Loose convention: >> 512 is credential passing */
@ -87,9 +87,9 @@ bool nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
continue;
if (!(range->flags & IP_NAT_RANGE_PROTO_RANDOM))
*rover = off;
return true;
return;
}
return false;
return;
}
EXPORT_SYMBOL_GPL(nf_nat_proto_unique_tuple);

6
net/ipv4/netfilter/nf_nat_proto_dccp.c
View File

@ -22,14 +22,14 @@
static u_int16_t dccp_port_rover;
static bool
static void
dccp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
return nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&dccp_port_rover);
nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&dccp_port_rover);
}
static bool

8
net/ipv4/netfilter/nf_nat_proto_gre.c
View File

@ -37,7 +37,7 @@ MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
MODULE_DESCRIPTION("Netfilter NAT protocol helper module for GRE");
/* generate unique tuple ... */
static bool
static void
gre_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
@ -50,7 +50,7 @@ gre_unique_tuple(struct nf_conntrack_tuple *tuple,
/* If there is no master conntrack we are not PPTP,
do not change tuples */
if (!ct->master)
return false;
return;
if (maniptype == IP_NAT_MANIP_SRC)
keyptr = &tuple->src.u.gre.key;
@ -71,11 +71,11 @@ gre_unique_tuple(struct nf_conntrack_tuple *tuple,
for (i = 0; i < range_size; i++, key++) {
*keyptr = htons(min + key % range_size);
if (!nf_nat_used_tuple(tuple, ct))
return true;
return;
}
pr_debug("%p: no NAT mapping\n", ct);
return false;
return;
}
/* manipulate a GRE packet according to maniptype */

6
net/ipv4/netfilter/nf_nat_proto_icmp.c
View File

@ -27,7 +27,7 @@ icmp_in_range(const struct nf_conntrack_tuple *tuple,
ntohs(tuple->src.u.icmp.id) <= ntohs(max->icmp.id);
}
static bool
static void
icmp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
@ -46,9 +46,9 @@ icmp_unique_tuple(struct nf_conntrack_tuple *tuple,
tuple->src.u.icmp.id = htons(ntohs(range->min.icmp.id) +
(id % range_size));
if (!nf_nat_used_tuple(tuple, ct))
return true;
return;
}
return false;
return;
}
static bool

6
net/ipv4/netfilter/nf_nat_proto_sctp.c
View File

@ -16,14 +16,14 @@
static u_int16_t nf_sctp_port_rover;
static bool
static void
sctp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
return nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&nf_sctp_port_rover);
nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&nf_sctp_port_rover);
}
static bool

5
net/ipv4/netfilter/nf_nat_proto_tcp.c
View File

@ -20,14 +20,13 @@
static u_int16_t tcp_port_rover;
static bool
static void
tcp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
return nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&tcp_port_rover);
nf_nat_proto_unique_tuple(tuple, range, maniptype, ct, &tcp_port_rover);
}
static bool

5
net/ipv4/netfilter/nf_nat_proto_udp.c
View File

@ -19,14 +19,13 @@
static u_int16_t udp_port_rover;
static bool
static void
udp_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
return nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&udp_port_rover);
nf_nat_proto_unique_tuple(tuple, range, maniptype, ct, &udp_port_rover);
}
static bool

6
net/ipv4/netfilter/nf_nat_proto_udplite.c
View File

@ -18,14 +18,14 @@
static u_int16_t udplite_port_rover;
static bool
static void
udplite_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
return nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&udplite_port_rover);
nf_nat_proto_unique_tuple(tuple, range, maniptype, ct,
&udplite_port_rover);
}
static bool

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

@ -26,14 +26,14 @@ static bool unknown_in_range(const struct nf_conntrack_tuple *tuple,
return true;
}
static bool unknown_unique_tuple(struct nf_conntrack_tuple *tuple,
static void unknown_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *ct)
{
/* Sorry: we can't help you; if it's not unique, we can't frob
anything. */
return false;
return;
}
static bool