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[NETFILTER]: nf_conntrack: naming unification 

Rename all "conntrack" variables to "ct" for more consistency and
avoiding some overly long lines.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2008-01-31 04:42:11 -08:00 committed by David S. Miller
parent 76eb946040
commit c88130bcd5
13 changed files with 156 additions and 166 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/net/netfilter/nf_conntrack.h
View File

@ -145,7 +145,7 @@ nf_ct_tuplehash_to_ctrack(const struct nf_conntrack_tuple_hash *hash)
/* Alter reply tuple (maybe alter helper). */
extern void
nf_conntrack_alter_reply(struct nf_conn *conntrack,
nf_conntrack_alter_reply(struct nf_conn *ct,
const struct nf_conntrack_tuple *newreply);
/* Is this tuple taken? (ignoring any belonging to the given
@ -218,7 +218,7 @@ static inline void nf_ct_refresh(struct nf_conn *ct,
/* Update TCP window tracking data when NAT mangles the packet */
extern void nf_conntrack_tcp_update(struct sk_buff *skb,
unsigned int dataoff,
struct nf_conn *conntrack,
struct nf_conn *ct,
int dir);
/* Fake conntrack entry for untracked connections */

4
include/net/netfilter/nf_conntrack_l3proto.h
View File

@ -43,7 +43,7 @@ struct nf_conntrack_l3proto
const struct nf_conntrack_tuple *);
/* Returns verdict for packet, or -1 for invalid. */
int (*packet)(struct nf_conn *conntrack,
int (*packet)(struct nf_conn *ct,
const struct sk_buff *skb,
enum ip_conntrack_info ctinfo);
@ -51,7 +51,7 @@ struct nf_conntrack_l3proto
* Called when a new connection for this protocol found;
* returns TRUE if it's OK. If so, packet() called next.
*/
int (*new)(struct nf_conn *conntrack, const struct sk_buff *skb);
int (*new)(struct nf_conn *ct, const struct sk_buff *skb);
/*
* Called before tracking.

6
include/net/netfilter/nf_conntrack_l4proto.h
View File

@ -36,7 +36,7 @@ struct nf_conntrack_l4proto
const struct nf_conntrack_tuple *orig);
/* Returns verdict for packet, or -1 for invalid. */
int (*packet)(struct nf_conn *conntrack,
int (*packet)(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
@ -45,11 +45,11 @@ struct nf_conntrack_l4proto
/* Called when a new connection for this protocol found;
* returns TRUE if it's OK. If so, packet() called next. */
int (*new)(struct nf_conn *conntrack, const struct sk_buff *skb,
int (*new)(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff);
/* Called when a conntrack entry is destroyed */
void (*destroy)(struct nf_conn *conntrack);
void (*destroy)(struct nf_conn *ct);
int (*error)(struct sk_buff *skb, unsigned int dataoff,
enum ip_conntrack_info *ctinfo,

12
net/ipv4/netfilter/nf_conntrack_proto_icmp.c
View File

@ -100,7 +100,7 @@ static int icmp_packet(struct nf_conn *ct,
}
/* Called when a new connection for this protocol found. */
static int icmp_new(struct nf_conn *conntrack,
static int icmp_new(struct nf_conn *ct,
const struct sk_buff *skb, unsigned int dataoff)
{
static const u_int8_t valid_new[] = {
@ -110,15 +110,15 @@ static int icmp_new(struct nf_conn *conntrack,
[ICMP_ADDRESS] = 1
};
if (conntrack->tuplehash[0].tuple.dst.u.icmp.type >= sizeof(valid_new)
|| !valid_new[conntrack->tuplehash[0].tuple.dst.u.icmp.type]) {
if (ct->tuplehash[0].tuple.dst.u.icmp.type >= sizeof(valid_new)
|| !valid_new[ct->tuplehash[0].tuple.dst.u.icmp.type]) {
/* Can't create a new ICMP `conn' with this. */
pr_debug("icmp: can't create new conn with type %u\n",
conntrack->tuplehash[0].tuple.dst.u.icmp.type);
NF_CT_DUMP_TUPLE(&conntrack->tuplehash[0].tuple);
ct->tuplehash[0].tuple.dst.u.icmp.type);
NF_CT_DUMP_TUPLE(&ct->tuplehash[0].tuple);
return 0;
}
atomic_set(&conntrack->proto.icmp.count, 0);
atomic_set(&ct->proto.icmp.count, 0);
return 1;
}

10
net/ipv4/netfilter/nf_nat_proto_gre.c
View File

@ -59,7 +59,7 @@ static int
gre_unique_tuple(struct nf_conntrack_tuple *tuple,
const struct nf_nat_range *range,
enum nf_nat_manip_type maniptype,
const struct nf_conn *conntrack)
const struct nf_conn *ct)
{
static u_int16_t key;
__be16 *keyptr;
@ -67,7 +67,7 @@ gre_unique_tuple(struct nf_conntrack_tuple *tuple,
/* If there is no master conntrack we are not PPTP,
do not change tuples */
if (!conntrack->master)
if (!ct->master)
return 0;
if (maniptype == IP_NAT_MANIP_SRC)
@ -76,7 +76,7 @@ gre_unique_tuple(struct nf_conntrack_tuple *tuple,
keyptr = &tuple->dst.u.gre.key;
if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED)) {
pr_debug("%p: NATing GRE PPTP\n", conntrack);
pr_debug("%p: NATing GRE PPTP\n", ct);
min = 1;
range_size = 0xffff;
} else {
@ -88,11 +88,11 @@ 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, conntrack))
if (!nf_nat_used_tuple(tuple, ct))
return 1;
}
pr_debug("%p: no NAT mapping\n", conntrack);
pr_debug("%p: no NAT mapping\n", ct);
return 0;
}

8
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
View File

@ -101,7 +101,7 @@ static int icmpv6_packet(struct nf_conn *ct,
}
/* Called when a new connection for this protocol found. */
static int icmpv6_new(struct nf_conn *conntrack,
static int icmpv6_new(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff)
{
@ -109,16 +109,16 @@ static int icmpv6_new(struct nf_conn *conntrack,
[ICMPV6_ECHO_REQUEST - 128] = 1,
[ICMPV6_NI_QUERY - 128] = 1
};
int type = conntrack->tuplehash[0].tuple.dst.u.icmp.type - 128;
int type = ct->tuplehash[0].tuple.dst.u.icmp.type - 128;
if (type < 0 || type >= sizeof(valid_new) || !valid_new[type]) {
/* Can't create a new ICMPv6 `conn' with this. */
pr_debug("icmpv6: can't create new conn with type %u\n",
type + 128);
NF_CT_DUMP_TUPLE(&conntrack->tuplehash[0].tuple);
NF_CT_DUMP_TUPLE(&ct->tuplehash[0].tuple);
return 0;
}
atomic_set(&conntrack->proto.icmp.count, 0);
atomic_set(&ct->proto.icmp.count, 0);
return 1;
}

58
net/netfilter/nf_conntrack_core.c
View File

@ -462,7 +462,7 @@ static noinline int early_drop(unsigned int hash)
struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
const struct nf_conntrack_tuple *repl)
{
struct nf_conn *conntrack = NULL;
struct nf_conn *ct = NULL;
if (unlikely(!nf_conntrack_hash_rnd_initted)) {
get_random_bytes(&nf_conntrack_hash_rnd, 4);
@ -485,22 +485,21 @@ struct nf_conn *nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
}
}
conntrack = kmem_cache_zalloc(nf_conntrack_cachep, GFP_ATOMIC);
if (conntrack == NULL) {
ct = kmem_cache_zalloc(nf_conntrack_cachep, GFP_ATOMIC);
if (ct == NULL) {
pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n");
atomic_dec(&nf_conntrack_count);
return ERR_PTR(-ENOMEM);
}
atomic_set(&conntrack->ct_general.use, 1);
conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
conntrack->tuplehash[IP_CT_DIR_REPLY].tuple = *repl;
atomic_set(&ct->ct_general.use, 1);
ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
ct->tuplehash[IP_CT_DIR_REPLY].tuple = *repl;
/* Don't set timer yet: wait for confirmation */
setup_timer(&conntrack->timeout, death_by_timeout,
(unsigned long)conntrack);
INIT_RCU_HEAD(&conntrack->rcu);
setup_timer(&ct->timeout, death_by_timeout, (unsigned long)ct);
INIT_RCU_HEAD(&ct->rcu);
return conntrack;
return ct;
}
EXPORT_SYMBOL_GPL(nf_conntrack_alloc);
@ -513,9 +512,9 @@ static void nf_conntrack_free_rcu(struct rcu_head *head)
atomic_dec(&nf_conntrack_count);
}
void nf_conntrack_free(struct nf_conn *conntrack)
void nf_conntrack_free(struct nf_conn *ct)
{
call_rcu(&conntrack->rcu, nf_conntrack_free_rcu);
call_rcu(&ct->rcu, nf_conntrack_free_rcu);
}
EXPORT_SYMBOL_GPL(nf_conntrack_free);
@ -528,7 +527,7 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
struct sk_buff *skb,
unsigned int dataoff)
{
struct nf_conn *conntrack;
struct nf_conn *ct;
struct nf_conn_help *help;
struct nf_conntrack_tuple repl_tuple;
struct nf_conntrack_expect *exp;
@ -538,14 +537,14 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
return NULL;
}
conntrack = nf_conntrack_alloc(tuple, &repl_tuple);
if (conntrack == NULL || IS_ERR(conntrack)) {
ct = nf_conntrack_alloc(tuple, &repl_tuple);
if (ct == NULL || IS_ERR(ct)) {
pr_debug("Can't allocate conntrack.\n");
return (struct nf_conntrack_tuple_hash *)conntrack;
return (struct nf_conntrack_tuple_hash *)ct;
}
if (!l4proto->new(conntrack, skb, dataoff)) {
nf_conntrack_free(conntrack);
if (!l4proto->new(ct, skb, dataoff)) {
nf_conntrack_free(ct);
pr_debug("init conntrack: can't track with proto module\n");
return NULL;
}
@ -554,30 +553,30 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
exp = nf_ct_find_expectation(tuple);
if (exp) {
pr_debug("conntrack: expectation arrives ct=%p exp=%p\n",
conntrack, exp);
ct, exp);
/* Welcome, Mr. Bond. We've been expecting you... */
__set_bit(IPS_EXPECTED_BIT, &conntrack->status);
conntrack->master = exp->master;
__set_bit(IPS_EXPECTED_BIT, &ct->status);
ct->master = exp->master;
if (exp->helper) {
help = nf_ct_helper_ext_add(conntrack, GFP_ATOMIC);
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help)
rcu_assign_pointer(help->helper, exp->helper);
}
#ifdef CONFIG_NF_CONNTRACK_MARK
conntrack->mark = exp->master->mark;
ct->mark = exp->master->mark;
#endif
#ifdef CONFIG_NF_CONNTRACK_SECMARK
conntrack->secmark = exp->master->secmark;
ct->secmark = exp->master->secmark;
#endif
nf_conntrack_get(&conntrack->master->ct_general);
nf_conntrack_get(&ct->master->ct_general);
NF_CT_STAT_INC(expect_new);
} else {
struct nf_conntrack_helper *helper;
helper = __nf_ct_helper_find(&repl_tuple);
if (helper) {
help = nf_ct_helper_ext_add(conntrack, GFP_ATOMIC);
help = nf_ct_helper_ext_add(ct, GFP_ATOMIC);
if (help)
rcu_assign_pointer(help->helper, helper);
}
@ -585,18 +584,17 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
}
/* Overload tuple linked list to put us in unconfirmed list. */
hlist_add_head(&conntrack->tuplehash[IP_CT_DIR_ORIGINAL].hnode,
&unconfirmed);
hlist_add_head(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode, &unconfirmed);
spin_unlock_bh(&nf_conntrack_lock);
if (exp) {
if (exp->expectfn)
exp->expectfn(conntrack, exp);
exp->expectfn(ct, exp);
nf_ct_expect_put(exp);
}
return &conntrack->tuplehash[IP_CT_DIR_ORIGINAL];
return &ct->tuplehash[IP_CT_DIR_ORIGINAL];
}
/* On success, returns conntrack ptr, sets skb->nfct and ctinfo */

6
net/netfilter/nf_conntrack_proto_generic.c
View File

@ -41,19 +41,19 @@ static int generic_print_tuple(struct seq_file *s,
}
/* Returns verdict for packet, or -1 for invalid. */
static int packet(struct nf_conn *conntrack,
static int packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
int pf,
unsigned int hooknum)
{
nf_ct_refresh_acct(conntrack, ctinfo, skb, nf_ct_generic_timeout);
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_generic_timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static int new(struct nf_conn *conntrack, const struct sk_buff *skb,
static int new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff)
{
return 1;

2
net/netfilter/nf_conntrack_proto_sctp.c
View File

@ -25,7 +25,7 @@
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
/* Protects conntrack->proto.sctp */
/* Protects ct->proto.sctp */
static DEFINE_RWLOCK(sctp_lock);
/* FIXME: Examine ipfilter's timeouts and conntrack transitions more

148
net/netfilter/nf_conntrack_proto_tcp.c
View File

@ -26,7 +26,7 @@
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_log.h>
/* Protects conntrack->proto.tcp */
/* Protects ct->proto.tcp */
static DEFINE_RWLOCK(tcp_lock);
/* "Be conservative in what you do,
@ -292,13 +292,12 @@ static int tcp_print_tuple(struct seq_file *s,
}
/* Print out the private part of the conntrack. */
static int tcp_print_conntrack(struct seq_file *s,
const struct nf_conn *conntrack)
static int tcp_print_conntrack(struct seq_file *s, const struct nf_conn *ct)
{
enum tcp_conntrack state;
read_lock_bh(&tcp_lock);
state = conntrack->proto.tcp.state;
state = ct->proto.tcp.state;
read_unlock_bh(&tcp_lock);
return seq_printf(s, "%s ", tcp_conntrack_names[state]);
@ -689,12 +688,12 @@ static int tcp_in_window(struct nf_conn *ct,
/* Caller must linearize skb at tcp header. */
void nf_conntrack_tcp_update(struct sk_buff *skb,
unsigned int dataoff,
struct nf_conn *conntrack,
struct nf_conn *ct,
int dir)
{
struct tcphdr *tcph = (void *)skb->data + dataoff;
struct ip_ct_tcp_state *sender = &conntrack->proto.tcp.seen[dir];
struct ip_ct_tcp_state *receiver = &conntrack->proto.tcp.seen[!dir];
struct ip_ct_tcp_state *sender = &ct->proto.tcp.seen[dir];
struct ip_ct_tcp_state *receiver = &ct->proto.tcp.seen[!dir];
__u32 end;
end = segment_seq_plus_len(ntohl(tcph->seq), skb->len, dataoff, tcph);
@ -703,9 +702,9 @@ void nf_conntrack_tcp_update(struct sk_buff *skb,
/*
* We have to worry for the ack in the reply packet only...
*/
if (after(end, conntrack->proto.tcp.seen[dir].td_end))
conntrack->proto.tcp.seen[dir].td_end = end;
conntrack->proto.tcp.last_end = end;
if (after(end, ct->proto.tcp.seen[dir].td_end))
ct->proto.tcp.seen[dir].td_end = end;
ct->proto.tcp.last_end = end;
write_unlock_bh(&tcp_lock);
pr_debug("tcp_update: sender end=%u maxend=%u maxwin=%u scale=%i "
"receiver end=%u maxend=%u maxwin=%u scale=%i\n",
@ -794,7 +793,7 @@ static int tcp_error(struct sk_buff *skb,
}
/* Returns verdict for packet, or -1 for invalid. */
static int tcp_packet(struct nf_conn *conntrack,
static int tcp_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
@ -812,26 +811,24 @@ static int tcp_packet(struct nf_conn *conntrack,
BUG_ON(th == NULL);
write_lock_bh(&tcp_lock);
old_state = conntrack->proto.tcp.state;
old_state = ct->proto.tcp.state;
dir = CTINFO2DIR(ctinfo);
index = get_conntrack_index(th);
new_state = tcp_conntracks[dir][index][old_state];
tuple = &conntrack->tuplehash[dir].tuple;
tuple = &ct->tuplehash[dir].tuple;
switch (new_state) {
case TCP_CONNTRACK_SYN_SENT:
if (old_state < TCP_CONNTRACK_TIME_WAIT)
break;
if ((conntrack->proto.tcp.seen[!dir].flags &
IP_CT_TCP_FLAG_CLOSE_INIT)
|| (conntrack->proto.tcp.last_dir == dir
&& conntrack->proto.tcp.last_index == TCP_RST_SET)) {
if ((ct->proto.tcp.seen[!dir].flags & IP_CT_TCP_FLAG_CLOSE_INIT)
|| (ct->proto.tcp.last_dir == dir
&& ct->proto.tcp.last_index == TCP_RST_SET)) {
/* Attempt to reopen a closed/aborted connection.
* Delete this connection and look up again. */
write_unlock_bh(&tcp_lock);
if (del_timer(&conntrack->timeout))
conntrack->timeout.function((unsigned long)
conntrack);
if (del_timer(&ct->timeout))
ct->timeout.function((unsigned long)ct);
return -NF_REPEAT;
}
/* Fall through */
@ -843,10 +840,9 @@ static int tcp_packet(struct nf_conn *conntrack,
* c) ACK in reply direction after initial SYN in original.
*/
if (index == TCP_SYNACK_SET
&& conntrack->proto.tcp.last_index == TCP_SYN_SET
&& conntrack->proto.tcp.last_dir != dir
&& ntohl(th->ack_seq) ==
conntrack->proto.tcp.last_end) {
&& ct->proto.tcp.last_index == TCP_SYN_SET
&& ct->proto.tcp.last_dir != dir
&& ntohl(th->ack_seq) == ct->proto.tcp.last_end) {
/* This SYN/ACK acknowledges a SYN that we earlier
* ignored as invalid. This means that the client and
* the server are both in sync, while the firewall is
@ -858,15 +854,14 @@ static int tcp_packet(struct nf_conn *conntrack,
if (LOG_INVALID(IPPROTO_TCP))
nf_log_packet(pf, 0, skb, NULL, NULL, NULL,
"nf_ct_tcp: killing out of sync session ");
if (del_timer(&conntrack->timeout))
conntrack->timeout.function((unsigned long)
conntrack);
if (del_timer(&ct->timeout))
ct->timeout.function((unsigned long)ct);
return -NF_DROP;
}
conntrack->proto.tcp.last_index = index;
conntrack->proto.tcp.last_dir = dir;
conntrack->proto.tcp.last_seq = ntohl(th->seq);
conntrack->proto.tcp.last_end =
ct->proto.tcp.last_index = index;
ct->proto.tcp.last_dir = dir;
ct->proto.tcp.last_seq = ntohl(th->seq);
ct->proto.tcp.last_end =
segment_seq_plus_len(ntohl(th->seq), skb->len, dataoff, th);
write_unlock_bh(&tcp_lock);
@ -885,11 +880,11 @@ static int tcp_packet(struct nf_conn *conntrack,
return -NF_ACCEPT;
case TCP_CONNTRACK_CLOSE:
if (index == TCP_RST_SET
&& ((test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)
&& conntrack->proto.tcp.last_index == TCP_SYN_SET)
|| (!test_bit(IPS_ASSURED_BIT, &conntrack->status)
&& conntrack->proto.tcp.last_index == TCP_ACK_SET))
&& ntohl(th->ack_seq) == conntrack->proto.tcp.last_end) {
&& ((test_bit(IPS_SEEN_REPLY_BIT, &ct->status)
&& ct->proto.tcp.last_index == TCP_SYN_SET)
|| (!test_bit(IPS_ASSURED_BIT, &ct->status)
&& ct->proto.tcp.last_index == TCP_ACK_SET))
&& ntohl(th->ack_seq) == ct->proto.tcp.last_end) {
/* RST sent to invalid SYN or ACK we had let through
* at a) and c) above:
*
@ -907,15 +902,15 @@ static int tcp_packet(struct nf_conn *conntrack,
break;
}
if (!tcp_in_window(conntrack, &conntrack->proto.tcp, dir, index,
if (!tcp_in_window(ct, &ct->proto.tcp, dir, index,
skb, dataoff, th, pf)) {
write_unlock_bh(&tcp_lock);
return -NF_ACCEPT;
}
in_window:
/* From now on we have got in-window packets */
conntrack->proto.tcp.last_index = index;
conntrack->proto.tcp.last_dir = dir;
ct->proto.tcp.last_index = index;
ct->proto.tcp.last_dir = dir;
pr_debug("tcp_conntracks: ");
NF_CT_DUMP_TUPLE(tuple);
@ -924,12 +919,12 @@ static int tcp_packet(struct nf_conn *conntrack,
(th->fin ? 1 : 0), (th->rst ? 1 : 0),
old_state, new_state);
conntrack->proto.tcp.state = new_state;
ct->proto.tcp.state = new_state;
if (old_state != new_state
&& (new_state == TCP_CONNTRACK_FIN_WAIT
|| new_state == TCP_CONNTRACK_CLOSE))
conntrack->proto.tcp.seen[dir].flags |= IP_CT_TCP_FLAG_CLOSE_INIT;
timeout = conntrack->proto.tcp.retrans >= nf_ct_tcp_max_retrans
ct->proto.tcp.seen[dir].flags |= IP_CT_TCP_FLAG_CLOSE_INIT;
timeout = ct->proto.tcp.retrans >= nf_ct_tcp_max_retrans
&& tcp_timeouts[new_state] > nf_ct_tcp_timeout_max_retrans
? nf_ct_tcp_timeout_max_retrans : tcp_timeouts[new_state];
write_unlock_bh(&tcp_lock);
@ -938,41 +933,40 @@ static int tcp_packet(struct nf_conn *conntrack,
if (new_state != old_state)
nf_conntrack_event_cache(IPCT_PROTOINFO, skb);
if (!test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)) {
if (!test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
/* If only reply is a RST, we can consider ourselves not to
have an established connection: this is a fairly common
problem case, so we can delete the conntrack
immediately. --RR */
if (th->rst) {
if (del_timer(&conntrack->timeout))
conntrack->timeout.function((unsigned long)
conntrack);
if (del_timer(&ct->timeout))
ct->timeout.function((unsigned long)ct);
return NF_ACCEPT;
}
} else if (!test_bit(IPS_ASSURED_BIT, &conntrack->status)
} else if (!test_bit(IPS_ASSURED_BIT, &ct->status)
&& (old_state == TCP_CONNTRACK_SYN_RECV
|| old_state == TCP_CONNTRACK_ESTABLISHED)
&& new_state == TCP_CONNTRACK_ESTABLISHED) {
/* Set ASSURED if we see see valid ack in ESTABLISHED
after SYN_RECV or a valid answer for a picked up
connection. */
set_bit(IPS_ASSURED_BIT, &conntrack->status);
set_bit(IPS_ASSURED_BIT, &ct->status);
nf_conntrack_event_cache(IPCT_STATUS, skb);
}
nf_ct_refresh_acct(conntrack, ctinfo, skb, timeout);
nf_ct_refresh_acct(ct, ctinfo, skb, timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static int tcp_new(struct nf_conn *conntrack,
static int tcp_new(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff)
{
enum tcp_conntrack new_state;
struct tcphdr *th, _tcph;
struct ip_ct_tcp_state *sender = &conntrack->proto.tcp.seen[0];
struct ip_ct_tcp_state *receiver = &conntrack->proto.tcp.seen[1];
struct ip_ct_tcp_state *sender = &ct->proto.tcp.seen[0];
struct ip_ct_tcp_state *receiver = &ct->proto.tcp.seen[1];
th = skb_header_pointer(skb, dataoff, sizeof(_tcph), &_tcph);
BUG_ON(th == NULL);
@ -990,17 +984,17 @@ static int tcp_new(struct nf_conn *conntrack,
if (new_state == TCP_CONNTRACK_SYN_SENT) {
/* SYN packet */
conntrack->proto.tcp.seen[0].td_end =
ct->proto.tcp.seen[0].td_end =
segment_seq_plus_len(ntohl(th->seq), skb->len,
dataoff, th);
conntrack->proto.tcp.seen[0].td_maxwin = ntohs(th->window);
if (conntrack->proto.tcp.seen[0].td_maxwin == 0)
conntrack->proto.tcp.seen[0].td_maxwin = 1;
conntrack->proto.tcp.seen[0].td_maxend =
conntrack->proto.tcp.seen[0].td_end;
ct->proto.tcp.seen[0].td_maxwin = ntohs(th->window);
if (ct->proto.tcp.seen[0].td_maxwin == 0)
ct->proto.tcp.seen[0].td_maxwin = 1;
ct->proto.tcp.seen[0].td_maxend =
ct->proto.tcp.seen[0].td_end;
tcp_options(skb, dataoff, th, &conntrack->proto.tcp.seen[0]);
conntrack->proto.tcp.seen[1].flags = 0;
tcp_options(skb, dataoff, th, &ct->proto.tcp.seen[0]);
ct->proto.tcp.seen[1].flags = 0;
} else if (nf_ct_tcp_loose == 0) {
/* Don't try to pick up connections. */
return 0;
@ -1010,32 +1004,32 @@ static int tcp_new(struct nf_conn *conntrack,
* its history is lost for us.
* Let's try to use the data from the packet.
*/
conntrack->proto.tcp.seen[0].td_end =
ct->proto.tcp.seen[0].td_end =
segment_seq_plus_len(ntohl(th->seq), skb->len,
dataoff, th);
conntrack->proto.tcp.seen[0].td_maxwin = ntohs(th->window);
if (conntrack->proto.tcp.seen[0].td_maxwin == 0)
conntrack->proto.tcp.seen[0].td_maxwin = 1;
conntrack->proto.tcp.seen[0].td_maxend =
conntrack->proto.tcp.seen[0].td_end +
conntrack->proto.tcp.seen[0].td_maxwin;
conntrack->proto.tcp.seen[0].td_scale = 0;
ct->proto.tcp.seen[0].td_maxwin = ntohs(th->window);
if (ct->proto.tcp.seen[0].td_maxwin == 0)
ct->proto.tcp.seen[0].td_maxwin = 1;
ct->proto.tcp.seen[0].td_maxend =
ct->proto.tcp.seen[0].td_end +
ct->proto.tcp.seen[0].td_maxwin;
ct->proto.tcp.seen[0].td_scale = 0;
/* We assume SACK and liberal window checking to handle
* window scaling */
conntrack->proto.tcp.seen[0].flags =
conntrack->proto.tcp.seen[1].flags = IP_CT_TCP_FLAG_SACK_PERM |
IP_CT_TCP_FLAG_BE_LIBERAL;
ct->proto.tcp.seen[0].flags =
ct->proto.tcp.seen[1].flags = IP_CT_TCP_FLAG_SACK_PERM |
IP_CT_TCP_FLAG_BE_LIBERAL;
}
conntrack->proto.tcp.seen[1].td_end = 0;
conntrack->proto.tcp.seen[1].td_maxend = 0;
conntrack->proto.tcp.seen[1].td_maxwin = 1;
conntrack->proto.tcp.seen[1].td_scale = 0;
ct->proto.tcp.seen[1].td_end = 0;
ct->proto.tcp.seen[1].td_maxend = 0;
ct->proto.tcp.seen[1].td_maxwin = 1;
ct->proto.tcp.seen[1].td_scale = 0;
/* tcp_packet will set them */
conntrack->proto.tcp.state = TCP_CONNTRACK_NONE;
conntrack->proto.tcp.last_index = TCP_NONE_SET;
ct->proto.tcp.state = TCP_CONNTRACK_NONE;
ct->proto.tcp.last_index = TCP_NONE_SET;
pr_debug("tcp_new: sender end=%u maxend=%u maxwin=%u scale=%i "
"receiver end=%u maxend=%u maxwin=%u scale=%i\n",

13
net/netfilter/nf_conntrack_proto_udp.c
View File

@ -61,7 +61,7 @@ static int udp_print_tuple(struct seq_file *s,
}
/* Returns verdict for packet, and may modify conntracktype */
static int udp_packet(struct nf_conn *conntrack,
static int udp_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
@ -70,20 +70,19 @@ static int udp_packet(struct nf_conn *conntrack,
{
/* If we've seen traffic both ways, this is some kind of UDP
stream. Extend timeout. */
if (test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)) {
nf_ct_refresh_acct(conntrack, ctinfo, skb,
nf_ct_udp_timeout_stream);
if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout_stream);
/* Also, more likely to be important, and not a probe */
if (!test_and_set_bit(IPS_ASSURED_BIT, &conntrack->status))
if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
nf_conntrack_event_cache(IPCT_STATUS, skb);
} else
nf_ct_refresh_acct(conntrack, ctinfo, skb, nf_ct_udp_timeout);
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udp_timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static int udp_new(struct nf_conn *conntrack, const struct sk_buff *skb,
static int udp_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff)
{
return 1;

13
net/netfilter/nf_conntrack_proto_udplite.c
View File

@ -60,7 +60,7 @@ static int udplite_print_tuple(struct seq_file *s,
}
/* Returns verdict for packet, and may modify conntracktype */
static int udplite_packet(struct nf_conn *conntrack,
static int udplite_packet(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
@ -69,21 +69,20 @@ static int udplite_packet(struct nf_conn *conntrack,
{
/* If we've seen traffic both ways, this is some kind of UDP
stream. Extend timeout. */
if (test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)) {
nf_ct_refresh_acct(conntrack, ctinfo, skb,
if (test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
nf_ct_refresh_acct(ct, ctinfo, skb,
nf_ct_udplite_timeout_stream);
/* Also, more likely to be important, and not a probe */
if (!test_and_set_bit(IPS_ASSURED_BIT, &conntrack->status))
if (!test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
nf_conntrack_event_cache(IPCT_STATUS, skb);
} else
nf_ct_refresh_acct(conntrack, ctinfo, skb,
nf_ct_udplite_timeout);
nf_ct_refresh_acct(ct, ctinfo, skb, nf_ct_udplite_timeout);
return NF_ACCEPT;
}
/* Called when a new connection for this protocol found. */
static int udplite_new(struct nf_conn *conntrack, const struct sk_buff *skb,
static int udplite_new(struct nf_conn *ct, const struct sk_buff *skb,
unsigned int dataoff)
{
return 1;

38
net/netfilter/nf_conntrack_standalone.c
View File

@ -117,71 +117,71 @@ static void ct_seq_stop(struct seq_file *s, void *v)
static int ct_seq_show(struct seq_file *s, void *v)
{
const struct nf_conntrack_tuple_hash *hash = v;
const struct nf_conn *conntrack = nf_ct_tuplehash_to_ctrack(hash);
const struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
struct nf_conntrack_l3proto *l3proto;
struct nf_conntrack_l4proto *l4proto;
NF_CT_ASSERT(conntrack);
NF_CT_ASSERT(ct);
/* we only want to print DIR_ORIGINAL */
if (NF_CT_DIRECTION(hash))
return 0;
l3proto = __nf_ct_l3proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
l3proto = __nf_ct_l3proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
.tuple.src.l3num);
NF_CT_ASSERT(l3proto);
l4proto = __nf_ct_l4proto_find(conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
l4proto = __nf_ct_l4proto_find(ct->tuplehash[IP_CT_DIR_ORIGINAL]
.tuple.src.l3num,
conntrack->tuplehash[IP_CT_DIR_ORIGINAL]
ct->tuplehash[IP_CT_DIR_ORIGINAL]
.tuple.dst.protonum);
NF_CT_ASSERT(l4proto);
if (seq_printf(s, "%-8s %u %-8s %u %ld ",
l3proto->name,
conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num,
ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.l3num,
l4proto->name,
conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
timer_pending(&conntrack->timeout)
? (long)(conntrack->timeout.expires - jiffies)/HZ : 0) != 0)
ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.protonum,
timer_pending(&ct->timeout)
? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0)
return -ENOSPC;
if (l4proto->print_conntrack && l4proto->print_conntrack(s, conntrack))
if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct))
return -ENOSPC;
if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
l3proto, l4proto))
return -ENOSPC;
if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_ORIGINAL]))
if (seq_print_counters(s, &ct->counters[IP_CT_DIR_ORIGINAL]))
return -ENOSPC;
if (!(test_bit(IPS_SEEN_REPLY_BIT, &conntrack->status)))
if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
if (seq_printf(s, "[UNREPLIED] "))
return -ENOSPC;
if (print_tuple(s, &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple,
if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple,
l3proto, l4proto))
return -ENOSPC;
if (seq_print_counters(s, &conntrack->counters[IP_CT_DIR_REPLY]))
if (seq_print_counters(s, &ct->counters[IP_CT_DIR_REPLY]))
return -ENOSPC;
if (test_bit(IPS_ASSURED_BIT, &conntrack->status))
if (test_bit(IPS_ASSURED_BIT, &ct->status))
if (seq_printf(s, "[ASSURED] "))
return -ENOSPC;
#if defined(CONFIG_NF_CONNTRACK_MARK)
if (seq_printf(s, "mark=%u ", conntrack->mark))
if (seq_printf(s, "mark=%u ", ct->mark))
return -ENOSPC;
#endif
#ifdef CONFIG_NF_CONNTRACK_SECMARK
if (seq_printf(s, "secmark=%u ", conntrack->secmark))
if (seq_printf(s, "secmark=%u ", ct->secmark))
return -ENOSPC;
#endif
if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use)))
return -ENOSPC;
return 0;