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[NETFILTER]: nf_conntrack_ftp: use nf_ct_expect_init

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-07-07 22:31:07 -07:00 committed by David S. Miller
parent 6823645d60
commit df43b4e7ca
1 changed files with 6 additions and 30 deletions
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36
net/netfilter/nf_conntrack_ftp.c
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@ -364,6 +364,7 @@ static int help(struct sk_buff **pskb,
unsigned int matchlen, matchoff;
struct nf_ct_ftp_master *ct_ftp_info = &nfct_help(ct)->help.ct_ftp_info;
struct nf_conntrack_expect *exp;
union nf_conntrack_address *daddr;
struct nf_conntrack_man cmd = {};
unsigned int i;
int found = 0, ends_in_nl;
@ -454,7 +455,7 @@ static int help(struct sk_buff **pskb,
/* We refer to the reverse direction ("!dir") tuples here,
* because we're expecting something in the other direction.
* Doesn't matter unless NAT is happening. */
exp->tuple.dst.u3 = ct->tuplehash[!dir].tuple.dst.u3;
daddr = &ct->tuplehash[!dir].tuple.dst.u3;
/* Update the ftp info */
if ((cmd.l3num == ct->tuplehash[dir].tuple.src.l3num) &&
@ -483,37 +484,12 @@ static int help(struct sk_buff **pskb,
ret = NF_ACCEPT;
goto out_put_expect;
}
memcpy(&exp->tuple.dst.u3, &cmd.u3.all,
sizeof(exp->tuple.dst.u3));
daddr = &cmd.u3;
}
exp->tuple.src.u3 = ct->tuplehash[!dir].tuple.src.u3;
exp->tuple.src.l3num = cmd.l3num;
exp->tuple.src.u.tcp.port = 0;
exp->tuple.dst.u.tcp.port = cmd.u.tcp.port;
exp->tuple.dst.protonum = IPPROTO_TCP;
exp->mask = (struct nf_conntrack_tuple)
{ .src = { .l3num = 0xFFFF,
.u = { .tcp = { 0 }},
},
.dst = { .protonum = 0xFF,
.u = { .tcp = { __constant_htons(0xFFFF) }},
},
};
if (cmd.l3num == PF_INET) {
exp->mask.src.u3.ip = htonl(0xFFFFFFFF);
exp->mask.dst.u3.ip = htonl(0xFFFFFFFF);
} else {
memset(exp->mask.src.u3.ip6, 0xFF,
sizeof(exp->mask.src.u3.ip6));
memset(exp->mask.dst.u3.ip6, 0xFF,
sizeof(exp->mask.src.u3.ip6));
}
exp->expectfn = NULL;
exp->helper = NULL;
exp->flags = 0;
nf_ct_expect_init(exp, cmd.l3num,
&ct->tuplehash[!dir].tuple.src.u3, daddr,
IPPROTO_TCP, NULL, &cmd.u.tcp.port);
/* Now, NAT might want to mangle the packet, and register the
* (possibly changed) expectation itself. */