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[NETFILTER]: nf_conntrack_sip: remove redundant function arguments

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The conntrack reference and ctinfo can be derived from the packet.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2008-03-25 20:17:13 -07:00
committed by David S. Miller
parent 2a6cfb22ae
commit 212440a7d0
3 changed files with 37 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
net/ipv4/netfilter/nf_nat_sip.c
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@@ -78,11 +78,12 @@ static unsigned int mangle_packet(struct sk_buff *skb,
return 1;
}
static int map_sip_addr(struct sk_buff *skb, enum ip_conntrack_info ctinfo,
struct nf_conn *ct,
static int map_sip_addr(struct sk_buff *skb,
const char **dptr, unsigned int *datalen,
enum sip_header_pos pos, struct addr_map *map)
{
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
unsigned int matchlen, matchoff, addrlen;
char *addr;
@@ -109,10 +110,10 @@ static int map_sip_addr(struct sk_buff *skb, enum ip_conntrack_info ctinfo,
}
static unsigned int ip_nat_sip(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conn *ct,
const char **dptr, unsigned int *datalen)
{
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
enum sip_header_pos pos;
struct addr_map map;
@@ -134,25 +135,25 @@ static unsigned int ip_nat_sip(struct sk_buff *skb,
else
pos = POS_REQ_URI;
if (!map_sip_addr(skb, ctinfo, ct, dptr, datalen, pos, &map))
if (!map_sip_addr(skb, dptr, datalen, pos, &map))
return NF_DROP;
}
if (!map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_FROM, &map) ||
!map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_TO, &map) ||
!map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_VIA, &map) ||
!map_sip_addr(skb, ctinfo, ct, dptr, datalen, POS_CONTACT, &map))
if (!map_sip_addr(skb, dptr, datalen, POS_FROM, &map) ||
!map_sip_addr(skb, dptr, datalen, POS_TO, &map) ||
!map_sip_addr(skb, dptr, datalen, POS_VIA, &map) ||
!map_sip_addr(skb, dptr, datalen, POS_CONTACT, &map))
return NF_DROP;
return NF_ACCEPT;
}
static unsigned int mangle_sip_packet(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conn *ct,
const char **dptr, unsigned int *datalen,
char *buffer, int bufflen,
enum sip_header_pos pos)
{
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
unsigned int matchlen, matchoff;
if (ct_sip_get_info(ct, *dptr, *datalen, &matchoff, &matchlen,
@@ -164,10 +165,10 @@ static unsigned int mangle_sip_packet(struct sk_buff *skb,
}
static int mangle_content_len(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conn *ct,
const char **dptr, unsigned int *datalen)
{
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
unsigned int matchoff, matchlen;
char buffer[sizeof("65536")];
int bufflen;
@@ -204,21 +205,21 @@ static unsigned int mangle_sdp(struct sk_buff *skb,
/* Mangle owner and contact info. */
bufflen = sprintf(buffer, "%u.%u.%u.%u", NIPQUAD(newip));
if (!mangle_sip_packet(skb, ctinfo, ct, dptr, datalen,
buffer, bufflen, POS_OWNER_IP4))
if (!mangle_sip_packet(skb, dptr, datalen, buffer, bufflen,
POS_OWNER_IP4))
return 0;
if (!mangle_sip_packet(skb, ctinfo, ct, dptr, datalen,
buffer, bufflen, POS_CONNECTION_IP4))
if (!mangle_sip_packet(skb, dptr, datalen, buffer, bufflen,
POS_CONNECTION_IP4))
return 0;
/* Mangle media port. */
bufflen = sprintf(buffer, "%u", port);
if (!mangle_sip_packet(skb, ctinfo, ct, dptr, datalen,
buffer, bufflen, POS_MEDIA))
if (!mangle_sip_packet(skb, dptr, datalen, buffer, bufflen,
POS_MEDIA))
return 0;
return mangle_content_len(skb, ctinfo, ct, dptr, datalen);
return mangle_content_len(skb, dptr, datalen);
}
static void ip_nat_sdp_expect(struct nf_conn *ct,
@@ -245,11 +246,11 @@ static void ip_nat_sdp_expect(struct nf_conn *ct,
/* So, this packet has hit the connection tracking matching code.
Mangle it, and change the expectation to match the new version. */
static unsigned int ip_nat_sdp(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conntrack_expect *exp,
const char **dptr, unsigned int *datalen)
const char **dptr, unsigned int *datalen,
struct nf_conntrack_expect *exp)
{
struct nf_conn *ct = exp->master;
enum ip_conntrack_info ctinfo;
struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
enum ip_conntrack_dir dir = CTINFO2DIR(ctinfo);
__be32 newip;
u_int16_t port;