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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6

Browse source
This commit is contained in:
David S. Miller 2010-10-21 08:21:34 -07:00
commit 9941fb6276
78 changed files with 4226 additions and 1929 deletions
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28
net/ipv4/inet_hashtables.c
View file

@ -101,19 +101,43 @@ void inet_put_port(struct sock *sk)
}
EXPORT_SYMBOL(inet_put_port);
void __inet_inherit_port(struct sock *sk, struct sock *child)
int __inet_inherit_port(struct sock *sk, struct sock *child)
{
struct inet_hashinfo *table = sk->sk_prot->h.hashinfo;
const int bhash = inet_bhashfn(sock_net(sk), inet_sk(child)->inet_num,
unsigned short port = inet_sk(child)->inet_num;
const int bhash = inet_bhashfn(sock_net(sk), port,
table->bhash_size);
struct inet_bind_hashbucket *head = &table->bhash[bhash];
struct inet_bind_bucket *tb;
spin_lock(&head->lock);
tb = inet_csk(sk)->icsk_bind_hash;
if (tb->port != port) {
/* NOTE: using tproxy and redirecting skbs to a proxy
* on a different listener port breaks the assumption
* that the listener socket's icsk_bind_hash is the same
* as that of the child socket. We have to look up or
* create a new bind bucket for the child here. */
struct hlist_node *node;
inet_bind_bucket_for_each(tb, node, &head->chain) {
if (net_eq(ib_net(tb), sock_net(sk)) &&
tb->port == port)
break;
}
if (!node) {
tb = inet_bind_bucket_create(table->bind_bucket_cachep,
sock_net(sk), head, port);
if (!tb) {
spin_unlock(&head->lock);
return -ENOMEM;
}
}
}
sk_add_bind_node(child, &tb->owners);
inet_csk(child)->icsk_bind_hash = tb;
spin_unlock(&head->lock);
return 0;
}
EXPORT_SYMBOL_GPL(__inet_inherit_port);

4
net/ipv4/netfilter/Kconfig
View file

@ -324,10 +324,10 @@ config IP_NF_TARGET_ECN
config IP_NF_TARGET_TTL
tristate '"TTL" target support'
depends on NETFILTER_ADVANCED
depends on NETFILTER_ADVANCED && IP_NF_MANGLE
select NETFILTER_XT_TARGET_HL
---help---
This is a backwards-compat option for the user's convenience
This is a backwards-compatible option for the user's convenience
(e.g. when running oldconfig). It selects
CONFIG_NETFILTER_XT_TARGET_HL.

62
net/ipv4/netfilter/arp_tables.c
View file

@ -228,7 +228,7 @@ arpt_error(struct sk_buff *skb, const struct xt_action_param *par)
return NF_DROP;
}
static inline const struct arpt_entry_target *
static inline const struct xt_entry_target *
arpt_get_target_c(const struct arpt_entry *e)
{
return arpt_get_target((struct arpt_entry *)e);
@ -282,7 +282,7 @@ unsigned int arpt_do_table(struct sk_buff *skb,
arp = arp_hdr(skb);
do {
const struct arpt_entry_target *t;
const struct xt_entry_target *t;
if (!arp_packet_match(arp, skb->dev, indev, outdev, &e->arp)) {
e = arpt_next_entry(e);
@ -297,10 +297,10 @@ unsigned int arpt_do_table(struct sk_buff *skb,
if (!t->u.kernel.target->target) {
int v;
v = ((struct arpt_standard_target *)t)->verdict;
v = ((struct xt_standard_target *)t)->verdict;
if (v < 0) {
/* Pop from stack? */
if (v != ARPT_RETURN) {
if (v != XT_RETURN) {
verdict = (unsigned)(-v) - 1;
break;
}
@ -332,7 +332,7 @@ unsigned int arpt_do_table(struct sk_buff *skb,
/* Target might have changed stuff. */
arp = arp_hdr(skb);
if (verdict == ARPT_CONTINUE)
if (verdict == XT_CONTINUE)
e = arpt_next_entry(e);
else
/* Verdict */
@ -377,7 +377,7 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
e->counters.pcnt = pos;
for (;;) {
const struct arpt_standard_target *t
const struct xt_standard_target *t
= (void *)arpt_get_target_c(e);
int visited = e->comefrom & (1 << hook);
@ -392,13 +392,13 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
/* Unconditional return/END. */
if ((e->target_offset == sizeof(struct arpt_entry) &&
(strcmp(t->target.u.user.name,
ARPT_STANDARD_TARGET) == 0) &&
XT_STANDARD_TARGET) == 0) &&
t->verdict < 0 && unconditional(&e->arp)) ||
visited) {
unsigned int oldpos, size;
if ((strcmp(t->target.u.user.name,
ARPT_STANDARD_TARGET) == 0) &&
XT_STANDARD_TARGET) == 0) &&
t->verdict < -NF_MAX_VERDICT - 1) {
duprintf("mark_source_chains: bad "
"negative verdict (%i)\n",
@ -433,7 +433,7 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
int newpos = t->verdict;
if (strcmp(t->target.u.user.name,
ARPT_STANDARD_TARGET) == 0 &&
XT_STANDARD_TARGET) == 0 &&
newpos >= 0) {
if (newpos > newinfo->size -
sizeof(struct arpt_entry)) {
@ -464,14 +464,14 @@ static int mark_source_chains(const struct xt_table_info *newinfo,
static inline int check_entry(const struct arpt_entry *e, const char *name)
{
const struct arpt_entry_target *t;
const struct xt_entry_target *t;
if (!arp_checkentry(&e->arp)) {
duprintf("arp_tables: arp check failed %p %s.\n", e, name);
return -EINVAL;
}
if (e->target_offset + sizeof(struct arpt_entry_target) > e->next_offset)
if (e->target_offset + sizeof(struct xt_entry_target) > e->next_offset)
return -EINVAL;
t = arpt_get_target_c(e);
@ -483,7 +483,7 @@ static inline int check_entry(const struct arpt_entry *e, const char *name)
static inline int check_target(struct arpt_entry *e, const char *name)
{
struct arpt_entry_target *t = arpt_get_target(e);
struct xt_entry_target *t = arpt_get_target(e);
int ret;
struct xt_tgchk_param par = {
.table = name,
@ -506,7 +506,7 @@ static inline int check_target(struct arpt_entry *e, const char *name)
static inline int
find_check_entry(struct arpt_entry *e, const char *name, unsigned int size)
{
struct arpt_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
int ret;
@ -536,7 +536,7 @@ out:
static bool check_underflow(const struct arpt_entry *e)
{
const struct arpt_entry_target *t;
const struct xt_entry_target *t;
unsigned int verdict;
if (!unconditional(&e->arp))
@ -544,7 +544,7 @@ static bool check_underflow(const struct arpt_entry *e)
t = arpt_get_target_c(e);
if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
return false;
verdict = ((struct arpt_standard_target *)t)->verdict;
verdict = ((struct xt_standard_target *)t)->verdict;
verdict = -verdict - 1;
return verdict == NF_DROP || verdict == NF_ACCEPT;
}
@ -566,7 +566,7 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
}
if (e->next_offset
< sizeof(struct arpt_entry) + sizeof(struct arpt_entry_target)) {
< sizeof(struct arpt_entry) + sizeof(struct xt_entry_target)) {
duprintf("checking: element %p size %u\n",
e, e->next_offset);
return -EINVAL;
@ -598,7 +598,7 @@ static inline int check_entry_size_and_hooks(struct arpt_entry *e,
static inline void cleanup_entry(struct arpt_entry *e)
{
struct xt_tgdtor_param par;
struct arpt_entry_target *t;
struct xt_entry_target *t;
t = arpt_get_target(e);
par.target = t->u.kernel.target;
@ -794,7 +794,7 @@ static int copy_entries_to_user(unsigned int total_size,
/* FIXME: use iterator macros --RR */
/* ... then go back and fix counters and names */
for (off = 0, num = 0; off < total_size; off += e->next_offset, num++){
const struct arpt_entry_target *t;
const struct xt_entry_target *t;
e = (struct arpt_entry *)(loc_cpu_entry + off);
if (copy_to_user(userptr + off
@ -807,7 +807,7 @@ static int copy_entries_to_user(unsigned int total_size,
t = arpt_get_target_c(e);
if (copy_to_user(userptr + off + e->target_offset
+ offsetof(struct arpt_entry_target,
+ offsetof(struct xt_entry_target,
u.user.name),
t->u.kernel.target->name,
strlen(t->u.kernel.target->name)+1) != 0) {
@ -844,7 +844,7 @@ static int compat_calc_entry(const struct arpt_entry *e,
const struct xt_table_info *info,
const void *base, struct xt_table_info *newinfo)
{
const struct arpt_entry_target *t;
const struct xt_entry_target *t;
unsigned int entry_offset;
int off, i, ret;
@ -895,7 +895,7 @@ static int compat_table_info(const struct xt_table_info *info,
static int get_info(struct net *net, void __user *user,
const int *len, int compat)
{
char name[ARPT_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
struct xt_table *t;
int ret;
@ -908,7 +908,7 @@ static int get_info(struct net *net, void __user *user,
if (copy_from_user(name, user, sizeof(name)) != 0)
return -EFAULT;
name[ARPT_TABLE_MAXNAMELEN-1] = '\0';
name[XT_TABLE_MAXNAMELEN-1] = '\0';
#ifdef CONFIG_COMPAT
if (compat)
xt_compat_lock(NFPROTO_ARP);
@ -1204,7 +1204,7 @@ static int do_add_counters(struct net *net, const void __user *user,
#ifdef CONFIG_COMPAT
static inline void compat_release_entry(struct compat_arpt_entry *e)
{
struct arpt_entry_target *t;
struct xt_entry_target *t;
t = compat_arpt_get_target(e);
module_put(t->u.kernel.target->me);
@ -1220,7 +1220,7 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
const unsigned int *underflows,
const char *name)
{
struct arpt_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
unsigned int entry_offset;
int ret, off, h;
@ -1288,7 +1288,7 @@ compat_copy_entry_from_user(struct compat_arpt_entry *e, void **dstptr,
unsigned int *size, const char *name,
struct xt_table_info *newinfo, unsigned char *base)
{
struct arpt_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
struct arpt_entry *de;
unsigned int origsize;
@ -1474,7 +1474,7 @@ out_unlock:
}
struct compat_arpt_replace {
char name[ARPT_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
u32 valid_hooks;
u32 num_entries;
u32 size;
@ -1567,7 +1567,7 @@ static int compat_copy_entry_to_user(struct arpt_entry *e, void __user **dstptr,
struct xt_counters *counters,
unsigned int i)
{
struct arpt_entry_target *t;
struct xt_entry_target *t;
struct compat_arpt_entry __user *ce;
u_int16_t target_offset, next_offset;
compat_uint_t origsize;
@ -1628,7 +1628,7 @@ static int compat_copy_entries_to_user(unsigned int total_size,
}
struct compat_arpt_get_entries {
char name[ARPT_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
compat_uint_t size;
struct compat_arpt_entry entrytable[0];
};
@ -1828,7 +1828,7 @@ void arpt_unregister_table(struct xt_table *table)
/* The built-in targets: standard (NULL) and error. */
static struct xt_target arpt_builtin_tg[] __read_mostly = {
{
.name = ARPT_STANDARD_TARGET,
.name = XT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_ARP,
#ifdef CONFIG_COMPAT
@ -1838,9 +1838,9 @@ static struct xt_target arpt_builtin_tg[] __read_mostly = {
#endif
},
{
.name = ARPT_ERROR_TARGET,
.name = XT_ERROR_TARGET,
.target = arpt_error,
.targetsize = ARPT_FUNCTION_MAXNAMELEN,
.targetsize = XT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_ARP,
},
};

2
net/ipv4/netfilter/arpt_mangle.c
View file

@ -63,7 +63,7 @@ static int checkentry(const struct xt_tgchk_param *par)
return false;
if (mangle->target != NF_DROP && mangle->target != NF_ACCEPT &&
mangle->target != ARPT_CONTINUE)
mangle->target != XT_CONTINUE)
return false;
return true;
}

84
net/ipv4/netfilter/ip_tables.c
View file

@ -186,7 +186,7 @@ static inline bool unconditional(const struct ipt_ip *ip)
}
/* for const-correctness */
static inline const struct ipt_entry_target *
static inline const struct xt_entry_target *
ipt_get_target_c(const struct ipt_entry *e)
{
return ipt_get_target((struct ipt_entry *)e);
@ -230,9 +230,9 @@ get_chainname_rulenum(const struct ipt_entry *s, const struct ipt_entry *e,
const char *hookname, const char **chainname,
const char **comment, unsigned int *rulenum)
{
const struct ipt_standard_target *t = (void *)ipt_get_target_c(s);
const struct xt_standard_target *t = (void *)ipt_get_target_c(s);
if (strcmp(t->target.u.kernel.target->name, IPT_ERROR_TARGET) == 0) {
if (strcmp(t->target.u.kernel.target->name, XT_ERROR_TARGET) == 0) {
/* Head of user chain: ERROR target with chainname */
*chainname = t->target.data;
(*rulenum) = 0;
@ -241,7 +241,7 @@ get_chainname_rulenum(const struct ipt_entry *s, const struct ipt_entry *e,
if (s->target_offset == sizeof(struct ipt_entry) &&
strcmp(t->target.u.kernel.target->name,
IPT_STANDARD_TARGET) == 0 &&
XT_STANDARD_TARGET) == 0 &&
t->verdict < 0 &&
unconditional(&s->ip)) {
/* Tail of chains: STANDARD target (return/policy) */
@ -346,7 +346,7 @@ ipt_do_table(struct sk_buff *skb,
get_entry(table_base, private->underflow[hook]));
do {
const struct ipt_entry_target *t;
const struct xt_entry_target *t;
const struct xt_entry_match *ematch;
IP_NF_ASSERT(e);
@ -380,10 +380,10 @@ ipt_do_table(struct sk_buff *skb,
if (!t->u.kernel.target->target) {
int v;
v = ((struct ipt_standard_target *)t)->verdict;
v = ((struct xt_standard_target *)t)->verdict;
if (v < 0) {
/* Pop from stack? */
if (v != IPT_RETURN) {
if (v != XT_RETURN) {
verdict = (unsigned)(-v) - 1;
break;
}
@ -421,7 +421,7 @@ ipt_do_table(struct sk_buff *skb,
verdict = t->u.kernel.target->target(skb, &acpar);
/* Target might have changed stuff. */
ip = ip_hdr(skb);
if (verdict == IPT_CONTINUE)
if (verdict == XT_CONTINUE)
e = ipt_next_entry(e);
else
/* Verdict */
@ -461,7 +461,7 @@ mark_source_chains(const struct xt_table_info *newinfo,
e->counters.pcnt = pos;
for (;;) {
const struct ipt_standard_target *t
const struct xt_standard_target *t
= (void *)ipt_get_target_c(e);
int visited = e->comefrom & (1 << hook);
@ -475,13 +475,13 @@ mark_source_chains(const struct xt_table_info *newinfo,
/* Unconditional return/END. */
if ((e->target_offset == sizeof(struct ipt_entry) &&
(strcmp(t->target.u.user.name,
IPT_STANDARD_TARGET) == 0) &&
XT_STANDARD_TARGET) == 0) &&
t->verdict < 0 && unconditional(&e->ip)) ||
visited) {
unsigned int oldpos, size;
if ((strcmp(t->target.u.user.name,
IPT_STANDARD_TARGET) == 0) &&
XT_STANDARD_TARGET) == 0) &&
t->verdict < -NF_MAX_VERDICT - 1) {
duprintf("mark_source_chains: bad "
"negative verdict (%i)\n",
@ -524,7 +524,7 @@ mark_source_chains(const struct xt_table_info *newinfo,
int newpos = t->verdict;
if (strcmp(t->target.u.user.name,
IPT_STANDARD_TARGET) == 0 &&
XT_STANDARD_TARGET) == 0 &&
newpos >= 0) {
if (newpos > newinfo->size -
sizeof(struct ipt_entry)) {
@ -552,7 +552,7 @@ mark_source_chains(const struct xt_table_info *newinfo,
return 1;
}
static void cleanup_match(struct ipt_entry_match *m, struct net *net)
static void cleanup_match(struct xt_entry_match *m, struct net *net)
{
struct xt_mtdtor_param par;
@ -568,14 +568,14 @@ static void cleanup_match(struct ipt_entry_match *m, struct net *net)
static int
check_entry(const struct ipt_entry *e, const char *name)
{
const struct ipt_entry_target *t;
const struct xt_entry_target *t;
if (!ip_checkentry(&e->ip)) {
duprintf("ip check failed %p %s.\n", e, par->match->name);
return -EINVAL;
}
if (e->target_offset + sizeof(struct ipt_entry_target) >
if (e->target_offset + sizeof(struct xt_entry_target) >
e->next_offset)
return -EINVAL;
@ -587,7 +587,7 @@ check_entry(const struct ipt_entry *e, const char *name)
}
static int
check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
{
const struct ipt_ip *ip = par->entryinfo;
int ret;
@ -605,7 +605,7 @@ check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
}
static int
find_check_match(struct ipt_entry_match *m, struct xt_mtchk_param *par)
find_check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
{
struct xt_match *match;
int ret;
@ -630,7 +630,7 @@ err:
static int check_target(struct ipt_entry *e, struct net *net, const char *name)
{
struct ipt_entry_target *t = ipt_get_target(e);
struct xt_entry_target *t = ipt_get_target(e);
struct xt_tgchk_param par = {
.net = net,
.table = name,
@ -656,7 +656,7 @@ static int
find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
unsigned int size)
{
struct ipt_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
int ret;
unsigned int j;
@ -707,7 +707,7 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
static bool check_underflow(const struct ipt_entry *e)
{
const struct ipt_entry_target *t;
const struct xt_entry_target *t;
unsigned int verdict;
if (!unconditional(&e->ip))
@ -715,7 +715,7 @@ static bool check_underflow(const struct ipt_entry *e)
t = ipt_get_target_c(e);
if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
return false;
verdict = ((struct ipt_standard_target *)t)->verdict;
verdict = ((struct xt_standard_target *)t)->verdict;
verdict = -verdict - 1;
return verdict == NF_DROP || verdict == NF_ACCEPT;
}
@ -738,7 +738,7 @@ check_entry_size_and_hooks(struct ipt_entry *e,
}
if (e->next_offset
< sizeof(struct ipt_entry) + sizeof(struct ipt_entry_target)) {
< sizeof(struct ipt_entry) + sizeof(struct xt_entry_target)) {
duprintf("checking: element %p size %u\n",
e, e->next_offset);
return -EINVAL;
@ -771,7 +771,7 @@ static void
cleanup_entry(struct ipt_entry *e, struct net *net)
{
struct xt_tgdtor_param par;
struct ipt_entry_target *t;
struct xt_entry_target *t;
struct xt_entry_match *ematch;
/* Cleanup all matches */
@ -972,8 +972,8 @@ copy_entries_to_user(unsigned int total_size,
/* ... then go back and fix counters and names */
for (off = 0, num = 0; off < total_size; off += e->next_offset, num++){
unsigned int i;
const struct ipt_entry_match *m;
const struct ipt_entry_target *t;
const struct xt_entry_match *m;
const struct xt_entry_target *t;
e = (struct ipt_entry *)(loc_cpu_entry + off);
if (copy_to_user(userptr + off
@ -990,7 +990,7 @@ copy_entries_to_user(unsigned int total_size,
m = (void *)e + i;
if (copy_to_user(userptr + off + i
+ offsetof(struct ipt_entry_match,
+ offsetof(struct xt_entry_match,
u.user.name),
m->u.kernel.match->name,
strlen(m->u.kernel.match->name)+1)
@ -1002,7 +1002,7 @@ copy_entries_to_user(unsigned int total_size,
t = ipt_get_target_c(e);
if (copy_to_user(userptr + off + e->target_offset
+ offsetof(struct ipt_entry_target,
+ offsetof(struct xt_entry_target,
u.user.name),
t->u.kernel.target->name,
strlen(t->u.kernel.target->name)+1) != 0) {
@ -1040,7 +1040,7 @@ static int compat_calc_entry(const struct ipt_entry *e,
const void *base, struct xt_table_info *newinfo)
{
const struct xt_entry_match *ematch;
const struct ipt_entry_target *t;
const struct xt_entry_target *t;
unsigned int entry_offset;
int off, i, ret;
@ -1092,7 +1092,7 @@ static int compat_table_info(const struct xt_table_info *info,
static int get_info(struct net *net, void __user *user,
const int *len, int compat)
{
char name[IPT_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
struct xt_table *t;
int ret;
@ -1105,7 +1105,7 @@ static int get_info(struct net *net, void __user *user,
if (copy_from_user(name, user, sizeof(name)) != 0)
return -EFAULT;
name[IPT_TABLE_MAXNAMELEN-1] = '\0';
name[XT_TABLE_MAXNAMELEN-1] = '\0';
#ifdef CONFIG_COMPAT
if (compat)
xt_compat_lock(AF_INET);
@ -1400,14 +1400,14 @@ do_add_counters(struct net *net, const void __user *user,
#ifdef CONFIG_COMPAT
struct compat_ipt_replace {
char name[IPT_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
u32 valid_hooks;
u32 num_entries;
u32 size;
u32 hook_entry[NF_INET_NUMHOOKS];
u32 underflow[NF_INET_NUMHOOKS];
u32 num_counters;
compat_uptr_t counters; /* struct ipt_counters * */
compat_uptr_t counters; /* struct xt_counters * */
struct compat_ipt_entry entries[0];
};
@ -1416,7 +1416,7 @@ compat_copy_entry_to_user(struct ipt_entry *e, void __user **dstptr,
unsigned int *size, struct xt_counters *counters,
unsigned int i)
{
struct ipt_entry_target *t;
struct xt_entry_target *t;
struct compat_ipt_entry __user *ce;
u_int16_t target_offset, next_offset;
compat_uint_t origsize;
@ -1451,7 +1451,7 @@ compat_copy_entry_to_user(struct ipt_entry *e, void __user **dstptr,
}
static int
compat_find_calc_match(struct ipt_entry_match *m,
compat_find_calc_match(struct xt_entry_match *m,
const char *name,
const struct ipt_ip *ip,
unsigned int hookmask,
@ -1473,7 +1473,7 @@ compat_find_calc_match(struct ipt_entry_match *m,
static void compat_release_entry(struct compat_ipt_entry *e)
{
struct ipt_entry_target *t;
struct xt_entry_target *t;
struct xt_entry_match *ematch;
/* Cleanup all matches */
@ -1494,7 +1494,7 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
const char *name)
{
struct xt_entry_match *ematch;
struct ipt_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
unsigned int entry_offset;
unsigned int j;
@ -1576,7 +1576,7 @@ compat_copy_entry_from_user(struct compat_ipt_entry *e, void **dstptr,
unsigned int *size, const char *name,
struct xt_table_info *newinfo, unsigned char *base)
{
struct ipt_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
struct ipt_entry *de;
unsigned int origsize;
@ -1884,7 +1884,7 @@ compat_do_ipt_set_ctl(struct sock *sk, int cmd, void __user *user,
}
struct compat_ipt_get_entries {
char name[IPT_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
compat_uint_t size;
struct compat_ipt_entry entrytable[0];
};
@ -2039,7 +2039,7 @@ do_ipt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
case IPT_SO_GET_REVISION_MATCH:
case IPT_SO_GET_REVISION_TARGET: {
struct ipt_get_revision rev;
struct xt_get_revision rev;
int target;
if (*len != sizeof(rev)) {
@ -2176,7 +2176,7 @@ static int icmp_checkentry(const struct xt_mtchk_param *par)
static struct xt_target ipt_builtin_tg[] __read_mostly = {
{
.name = IPT_STANDARD_TARGET,
.name = XT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_IPV4,
#ifdef CONFIG_COMPAT
@ -2186,9 +2186,9 @@ static struct xt_target ipt_builtin_tg[] __read_mostly = {
#endif
},
{
.name = IPT_ERROR_TARGET,
.name = XT_ERROR_TARGET,
.target = ipt_error,
.targetsize = IPT_FUNCTION_MAXNAMELEN,
.targetsize = XT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_IPV4,
},
};

145
net/ipv4/netfilter/ipt_LOG.c
View file

@ -24,16 +24,15 @@
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv4/ipt_LOG.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/xt_log.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Netfilter Core Team <[email protected]>");
MODULE_DESCRIPTION("Xtables: IPv4 packet logging to syslog");
/* Use lock to serialize, so printks don't overlap */
static DEFINE_SPINLOCK(log_lock);
/* One level of recursion won't kill us */
static void dump_packet(const struct nf_loginfo *info,
static void dump_packet(struct sbuff *m,
const struct nf_loginfo *info,
const struct sk_buff *skb,
unsigned int iphoff)
{
@ -48,32 +47,32 @@ static void dump_packet(const struct nf_loginfo *info,
ih = skb_header_pointer(skb, iphoff, sizeof(_iph), &_iph);
if (ih == NULL) {
printk("TRUNCATED");
sb_add(m, "TRUNCATED");
return;
}
/* Important fields:
* TOS, len, DF/MF, fragment offset, TTL, src, dst, options. */
/* Max length: 40 "SRC=255.255.255.255 DST=255.255.255.255 " */
printk("SRC=%pI4 DST=%pI4 ",
sb_add(m, "SRC=%pI4 DST=%pI4 ",
&ih->saddr, &ih->daddr);
/* Max length: 46 "LEN=65535 TOS=0xFF PREC=0xFF TTL=255 ID=65535 " */
printk("LEN=%u TOS=0x%02X PREC=0x%02X TTL=%u ID=%u ",
sb_add(m, "LEN=%u TOS=0x%02X PREC=0x%02X TTL=%u ID=%u ",
ntohs(ih->tot_len), ih->tos & IPTOS_TOS_MASK,
ih->tos & IPTOS_PREC_MASK, ih->ttl, ntohs(ih->id));
/* Max length: 6 "CE DF MF " */
if (ntohs(ih->frag_off) & IP_CE)
printk("CE ");
sb_add(m, "CE ");
if (ntohs(ih->frag_off) & IP_DF)
printk("DF ");
sb_add(m, "DF ");
if (ntohs(ih->frag_off) & IP_MF)
printk("MF ");
sb_add(m, "MF ");
/* Max length: 11 "FRAG:65535 " */
if (ntohs(ih->frag_off) & IP_OFFSET)
printk("FRAG:%u ", ntohs(ih->frag_off) & IP_OFFSET);
sb_add(m, "FRAG:%u ", ntohs(ih->frag_off) & IP_OFFSET);
if ((logflags & IPT_LOG_IPOPT) &&
ih->ihl * 4 > sizeof(struct iphdr)) {
@ -85,15 +84,15 @@ static void dump_packet(const struct nf_loginfo *info,
op = skb_header_pointer(skb, iphoff+sizeof(_iph),
optsize, _opt);
if (op == NULL) {
printk("TRUNCATED");
sb_add(m, "TRUNCATED");
return;
}
/* Max length: 127 "OPT (" 15*4*2chars ") " */
printk("OPT (");
sb_add(m, "OPT (");
for (i = 0; i < optsize; i++)
printk("%02X", op[i]);
printk(") ");
sb_add(m, "%02X", op[i]);
sb_add(m, ") ");
}
switch (ih->protocol) {
@ -102,7 +101,7 @@ static void dump_packet(const struct nf_loginfo *info,
const struct tcphdr *th;
/* Max length: 10 "PROTO=TCP " */
printk("PROTO=TCP ");
sb_add(m, "PROTO=TCP ");
if (ntohs(ih->frag_off) & IP_OFFSET)
break;
@ -111,41 +110,41 @@ static void dump_packet(const struct nf_loginfo *info,
th = skb_header_pointer(skb, iphoff + ih->ihl * 4,
sizeof(_tcph), &_tcph);
if (th == NULL) {
printk("INCOMPLETE [%u bytes] ",
sb_add(m, "INCOMPLETE [%u bytes] ",
skb->len - iphoff - ih->ihl*4);
break;
}
/* Max length: 20 "SPT=65535 DPT=65535 " */
printk("SPT=%u DPT=%u ",
sb_add(m, "SPT=%u DPT=%u ",
ntohs(th->source), ntohs(th->dest));
/* Max length: 30 "SEQ=4294967295 ACK=4294967295 " */
if (logflags & IPT_LOG_TCPSEQ)
printk("SEQ=%u ACK=%u ",
sb_add(m, "SEQ=%u ACK=%u ",
ntohl(th->seq), ntohl(th->ack_seq));
/* Max length: 13 "WINDOW=65535 " */
printk("WINDOW=%u ", ntohs(th->window));
sb_add(m, "WINDOW=%u ", ntohs(th->window));
/* Max length: 9 "RES=0x3F " */
printk("RES=0x%02x ", (u8)(ntohl(tcp_flag_word(th) & TCP_RESERVED_BITS) >> 22));
sb_add(m, "RES=0x%02x ", (u8)(ntohl(tcp_flag_word(th) & TCP_RESERVED_BITS) >> 22));
/* Max length: 32 "CWR ECE URG ACK PSH RST SYN FIN " */
if (th->cwr)
printk("CWR ");
sb_add(m, "CWR ");
if (th->ece)
printk("ECE ");
sb_add(m, "ECE ");
if (th->urg)
printk("URG ");
sb_add(m, "URG ");
if (th->ack)
printk("ACK ");
sb_add(m, "ACK ");
if (th->psh)
printk("PSH ");
sb_add(m, "PSH ");
if (th->rst)
printk("RST ");
sb_add(m, "RST ");
if (th->syn)
printk("SYN ");
sb_add(m, "SYN ");
if (th->fin)
printk("FIN ");
sb_add(m, "FIN ");
/* Max length: 11 "URGP=65535 " */
printk("URGP=%u ", ntohs(th->urg_ptr));
sb_add(m, "URGP=%u ", ntohs(th->urg_ptr));
if ((logflags & IPT_LOG_TCPOPT) &&
th->doff * 4 > sizeof(struct tcphdr)) {
@ -158,15 +157,15 @@ static void dump_packet(const struct nf_loginfo *info,
iphoff+ih->ihl*4+sizeof(_tcph),
optsize, _opt);
if (op == NULL) {
printk("TRUNCATED");
sb_add(m, "TRUNCATED");
return;
}
/* Max length: 127 "OPT (" 15*4*2chars ") " */
printk("OPT (");
sb_add(m, "OPT (");
for (i = 0; i < optsize; i++)
printk("%02X", op[i]);
printk(") ");
sb_add(m, "%02X", op[i]);
sb_add(m, ") ");
}
break;
}
@ -177,9 +176,9 @@ static void dump_packet(const struct nf_loginfo *info,
if (ih->protocol == IPPROTO_UDP)
/* Max length: 10 "PROTO=UDP " */
printk("PROTO=UDP " );
sb_add(m, "PROTO=UDP " );
else /* Max length: 14 "PROTO=UDPLITE " */
printk("PROTO=UDPLITE ");
sb_add(m, "PROTO=UDPLITE ");
if (ntohs(ih->frag_off) & IP_OFFSET)
break;
@ -188,13 +187,13 @@ static void dump_packet(const struct nf_loginfo *info,
uh = skb_header_pointer(skb, iphoff+ih->ihl*4,
sizeof(_udph), &_udph);
if (uh == NULL) {
printk("INCOMPLETE [%u bytes] ",
sb_add(m, "INCOMPLETE [%u bytes] ",
skb->len - iphoff - ih->ihl*4);
break;
}
/* Max length: 20 "SPT=65535 DPT=65535 " */
printk("SPT=%u DPT=%u LEN=%u ",
sb_add(m, "SPT=%u DPT=%u LEN=%u ",
ntohs(uh->source), ntohs(uh->dest),
ntohs(uh->len));
break;
@ -221,7 +220,7 @@ static void dump_packet(const struct nf_loginfo *info,
[ICMP_ADDRESSREPLY] = 12 };
/* Max length: 11 "PROTO=ICMP " */
printk("PROTO=ICMP ");
sb_add(m, "PROTO=ICMP ");
if (ntohs(ih->frag_off) & IP_OFFSET)
break;
@ -230,19 +229,19 @@ static void dump_packet(const struct nf_loginfo *info,
ich = skb_header_pointer(skb, iphoff + ih->ihl * 4,
sizeof(_icmph), &_icmph);
if (ich == NULL) {
printk("INCOMPLETE [%u bytes] ",
sb_add(m, "INCOMPLETE [%u bytes] ",
skb->len - iphoff - ih->ihl*4);
break;
}
/* Max length: 18 "TYPE=255 CODE=255 " */
printk("TYPE=%u CODE=%u ", ich->type, ich->code);
sb_add(m, "TYPE=%u CODE=%u ", ich->type, ich->code);
/* Max length: 25 "INCOMPLETE [65535 bytes] " */
if (ich->type <= NR_ICMP_TYPES &&
required_len[ich->type] &&
skb->len-iphoff-ih->ihl*4 < required_len[ich->type]) {
printk("INCOMPLETE [%u bytes] ",
sb_add(m, "INCOMPLETE [%u bytes] ",
skb->len - iphoff - ih->ihl*4);
break;
}
@ -251,35 +250,35 @@ static void dump_packet(const struct nf_loginfo *info,
case ICMP_ECHOREPLY:
case ICMP_ECHO:
/* Max length: 19 "ID=65535 SEQ=65535 " */
printk("ID=%u SEQ=%u ",
sb_add(m, "ID=%u SEQ=%u ",
ntohs(ich->un.echo.id),
ntohs(ich->un.echo.sequence));
break;
case ICMP_PARAMETERPROB:
/* Max length: 14 "PARAMETER=255 " */
printk("PARAMETER=%u ",
sb_add(m, "PARAMETER=%u ",
ntohl(ich->un.gateway) >> 24);
break;
case ICMP_REDIRECT:
/* Max length: 24 "GATEWAY=255.255.255.255 " */
printk("GATEWAY=%pI4 ", &ich->un.gateway);
sb_add(m, "GATEWAY=%pI4 ", &ich->un.gateway);
/* Fall through */
case ICMP_DEST_UNREACH:
case ICMP_SOURCE_QUENCH:
case ICMP_TIME_EXCEEDED:
/* Max length: 3+maxlen */
if (!iphoff) { /* Only recurse once. */
printk("[");
dump_packet(info, skb,
sb_add(m, "[");
dump_packet(m, info, skb,
iphoff + ih->ihl*4+sizeof(_icmph));
printk("] ");
sb_add(m, "] ");
}
/* Max length: 10 "MTU=65535 " */
if (ich->type == ICMP_DEST_UNREACH &&
ich->code == ICMP_FRAG_NEEDED)
printk("MTU=%u ", ntohs(ich->un.frag.mtu));
sb_add(m, "MTU=%u ", ntohs(ich->un.frag.mtu));
}
break;
}
@ -292,19 +291,19 @@ static void dump_packet(const struct nf_loginfo *info,
break;
/* Max length: 9 "PROTO=AH " */
printk("PROTO=AH ");
sb_add(m, "PROTO=AH ");
/* Max length: 25 "INCOMPLETE [65535 bytes] " */
ah = skb_header_pointer(skb, iphoff+ih->ihl*4,
sizeof(_ahdr), &_ahdr);
if (ah == NULL) {
printk("INCOMPLETE [%u bytes] ",
sb_add(m, "INCOMPLETE [%u bytes] ",
skb->len - iphoff - ih->ihl*4);
break;
}
/* Length: 15 "SPI=0xF1234567 " */
printk("SPI=0x%x ", ntohl(ah->spi));
sb_add(m, "SPI=0x%x ", ntohl(ah->spi));
break;
}
case IPPROTO_ESP: {
@ -312,7 +311,7 @@ static void dump_packet(const struct nf_loginfo *info,
const struct ip_esp_hdr *eh;
/* Max length: 10 "PROTO=ESP " */
printk("PROTO=ESP ");
sb_add(m, "PROTO=ESP ");
if (ntohs(ih->frag_off) & IP_OFFSET)
break;
@ -321,25 +320,25 @@ static void dump_packet(const struct nf_loginfo *info,
eh = skb_header_pointer(skb, iphoff+ih->ihl*4,
sizeof(_esph), &_esph);
if (eh == NULL) {
printk("INCOMPLETE [%u bytes] ",
sb_add(m, "INCOMPLETE [%u bytes] ",
skb->len - iphoff - ih->ihl*4);
break;
}
/* Length: 15 "SPI=0xF1234567 " */
printk("SPI=0x%x ", ntohl(eh->spi));
sb_add(m, "SPI=0x%x ", ntohl(eh->spi));
break;
}
/* Max length: 10 "PROTO 255 " */
default:
printk("PROTO=%u ", ih->protocol);
sb_add(m, "PROTO=%u ", ih->protocol);
}
/* Max length: 15 "UID=4294967295 " */
if ((logflags & IPT_LOG_UID) && !iphoff && skb->sk) {
read_lock_bh(&skb->sk->sk_callback_lock);
if (skb->sk->sk_socket && skb->sk->sk_socket->file)
printk("UID=%u GID=%u ",
sb_add(m, "UID=%u GID=%u ",
skb->sk->sk_socket->file->f_cred->fsuid,
skb->sk->sk_socket->file->f_cred->fsgid);
read_unlock_bh(&skb->sk->sk_callback_lock);
@ -347,7 +346,7 @@ static void dump_packet(const struct nf_loginfo *info,
/* Max length: 16 "MARK=0xFFFFFFFF " */
if (!iphoff && skb->mark)
printk("MARK=0x%x ", skb->mark);
sb_add(m, "MARK=0x%x ", skb->mark);
/* Proto Max log string length */
/* IP: 40+46+6+11+127 = 230 */
@ -364,7 +363,8 @@ static void dump_packet(const struct nf_loginfo *info,
/* maxlen = 230+ 91 + 230 + 252 = 803 */
}
static void dump_mac_header(const struct nf_loginfo *info,
static void dump_mac_header(struct sbuff *m,
const struct nf_loginfo *info,
const struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
@ -378,7 +378,7 @@ static void dump_mac_header(const struct nf_loginfo *info,
switch (dev->type) {
case ARPHRD_ETHER:
printk("MACSRC=%pM MACDST=%pM MACPROTO=%04x ",
sb_add(m, "MACSRC=%pM MACDST=%pM MACPROTO=%04x ",
eth_hdr(skb)->h_source, eth_hdr(skb)->h_dest,
ntohs(eth_hdr(skb)->h_proto));
return;
@ -387,17 +387,17 @@ static void dump_mac_header(const struct nf_loginfo *info,
}
fallback:
printk("MAC=");
sb_add(m, "MAC=");
if (dev->hard_header_len &&
skb->mac_header != skb->network_header) {
const unsigned char *p = skb_mac_header(skb);
unsigned int i;
printk("%02x", *p++);
sb_add(m, "%02x", *p++);
for (i = 1; i < dev->hard_header_len; i++, p++)
printk(":%02x", *p);
sb_add(m, ":%02x", *p);
}
printk(" ");
sb_add(m, " ");
}
static struct nf_loginfo default_loginfo = {
@ -419,11 +419,12 @@ ipt_log_packet(u_int8_t pf,
const struct nf_loginfo *loginfo,
const char *prefix)
{
struct sbuff *m = sb_open();
if (!loginfo)
loginfo = &default_loginfo;
spin_lock_bh(&log_lock);
printk("<%d>%sIN=%s OUT=%s ", loginfo->u.log.level,
sb_add(m, "<%d>%sIN=%s OUT=%s ", loginfo->u.log.level,
prefix,
in ? in->name : "",
out ? out->name : "");
@ -434,20 +435,20 @@ ipt_log_packet(u_int8_t pf,
physindev = skb->nf_bridge->physindev;
if (physindev && in != physindev)
printk("PHYSIN=%s ", physindev->name);
sb_add(m, "PHYSIN=%s ", physindev->name);
physoutdev = skb->nf_bridge->physoutdev;
if (physoutdev && out != physoutdev)
printk("PHYSOUT=%s ", physoutdev->name);
sb_add(m, "PHYSOUT=%s ", physoutdev->name);
}
#endif
/* MAC logging for input path only. */
if (in && !out)
dump_mac_header(loginfo, skb);
dump_mac_header(m, loginfo, skb);
dump_packet(loginfo, skb, 0);
printk("\n");
spin_unlock_bh(&log_lock);
dump_packet(m, loginfo, skb, 0);
sb_close(m);
}
static unsigned int

9
net/ipv4/netfilter/nf_nat_amanda.c
View file

@ -44,9 +44,16 @@ static unsigned int help(struct sk_buff *skb,
/* Try to get same port: if not, try to change it. */
for (port = ntohs(exp->saved_proto.tcp.port); port != 0; port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
port = 0;
break;
}
}
if (port == 0)

51
net/ipv4/netfilter/nf_nat_core.c
View file

@ -47,7 +47,7 @@ __nf_nat_proto_find(u_int8_t protonum)
return rcu_dereference(nf_nat_protos[protonum]);
}
const struct nf_nat_protocol *
static const struct nf_nat_protocol *
nf_nat_proto_find_get(u_int8_t protonum)
{
const struct nf_nat_protocol *p;
@ -60,14 +60,12 @@ nf_nat_proto_find_get(u_int8_t protonum)
return p;
}
EXPORT_SYMBOL_GPL(nf_nat_proto_find_get);
void
static void
nf_nat_proto_put(const struct nf_nat_protocol *p)
{
module_put(p->me);
}
EXPORT_SYMBOL_GPL(nf_nat_proto_put);
/* We keep an extra hash for each conntrack, for fast searching. */
static inline unsigned int
@ -262,11 +260,17 @@ get_unique_tuple(struct nf_conntrack_tuple *tuple,
proto = __nf_nat_proto_find(orig_tuple->dst.protonum);
/* Only bother mapping if it's not already in range and unique */
if (!(range->flags & IP_NAT_RANGE_PROTO_RANDOM) &&
(!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED) ||
proto->in_range(tuple, maniptype, &range->min, &range->max)) &&
!nf_nat_used_tuple(tuple, ct))
goto out;
if (!(range->flags & IP_NAT_RANGE_PROTO_RANDOM)) {
if (range->flags & IP_NAT_RANGE_PROTO_SPECIFIED) {
if (proto->in_range(tuple, maniptype, &range->min,
&range->max) &&
(range->min.all == range->max.all ||
!nf_nat_used_tuple(tuple, ct)))
goto out;
} else if (!nf_nat_used_tuple(tuple, ct)) {
goto out;
}
}
/* Last change: get protocol to try to obtain unique tuple. */
proto->unique_tuple(tuple, range, maniptype, ct);
@ -458,6 +462,18 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
return 0;
}
if (manip == IP_NAT_MANIP_SRC)
statusbit = IPS_SRC_NAT;
else
statusbit = IPS_DST_NAT;
/* Invert if this is reply dir. */
if (dir == IP_CT_DIR_REPLY)
statusbit ^= IPS_NAT_MASK;
if (!(ct->status & statusbit))
return 1;
pr_debug("icmp_reply_translation: translating error %p manip %u "
"dir %s\n", skb, manip,
dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY");
@ -492,20 +508,9 @@ int nf_nat_icmp_reply_translation(struct nf_conn *ct,
/* Change outer to look the reply to an incoming packet
* (proto 0 means don't invert per-proto part). */
if (manip == IP_NAT_MANIP_SRC)
statusbit = IPS_SRC_NAT;
else
statusbit = IPS_DST_NAT;
/* Invert if this is reply dir. */
if (dir == IP_CT_DIR_REPLY)
statusbit ^= IPS_NAT_MASK;
if (ct->status & statusbit) {
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
if (!manip_pkt(0, skb, 0, &target, manip))
return 0;
}
nf_ct_invert_tuplepr(&target, &ct->tuplehash[!dir].tuple);
if (!manip_pkt(0, skb, 0, &target, manip))
return 0;
return 1;
}

9
net/ipv4/netfilter/nf_nat_ftp.c
View file

@ -79,9 +79,16 @@ static unsigned int nf_nat_ftp(struct sk_buff *skb,
/* Try to get same port: if not, try to change it. */
for (port = ntohs(exp->saved_proto.tcp.port); port != 0; port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
port = 0;
break;
}
}
if (port == 0)

53
net/ipv4/netfilter/nf_nat_h323.c
View file

@ -222,13 +222,24 @@ static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
/* Try to get a pair of ports. */
for (nated_port = ntohs(rtp_exp->tuple.dst.u.udp.port);
nated_port != 0; nated_port += 2) {
int ret;
rtp_exp->tuple.dst.u.udp.port = htons(nated_port);
if (nf_ct_expect_related(rtp_exp) == 0) {
ret = nf_ct_expect_related(rtp_exp);
if (ret == 0) {
rtcp_exp->tuple.dst.u.udp.port =
htons(nated_port + 1);
if (nf_ct_expect_related(rtcp_exp) == 0)
ret = nf_ct_expect_related(rtcp_exp);
if (ret == 0)
break;
nf_ct_unexpect_related(rtp_exp);
else if (ret != -EBUSY) {
nf_ct_unexpect_related(rtp_exp);
nated_port = 0;
break;
}
} else if (ret != -EBUSY) {
nated_port = 0;
break;
}
}
@ -284,9 +295,16 @@ static int nat_t120(struct sk_buff *skb, struct nf_conn *ct,
/* Try to get same port: if not, try to change it. */
for (; nated_port != 0; nated_port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(nated_port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
nated_port = 0;
break;
}
}
if (nated_port == 0) { /* No port available */
@ -334,9 +352,16 @@ static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
/* Try to get same port: if not, try to change it. */
for (; nated_port != 0; nated_port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(nated_port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
nated_port = 0;
break;
}
}
if (nated_port == 0) { /* No port available */
@ -418,9 +443,16 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
/* Try to get same port: if not, try to change it. */
for (; nated_port != 0; nated_port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(nated_port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
nated_port = 0;
break;
}
}
if (nated_port == 0) { /* No port available */
@ -500,9 +532,16 @@ static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
/* Try to get same port: if not, try to change it. */
for (nated_port = ntohs(port); nated_port != 0; nated_port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(nated_port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
nated_port = 0;
break;
}
}
if (nated_port == 0) { /* No port available */

76
net/ipv4/netfilter/nf_nat_helper.c
View file

@ -153,6 +153,35 @@ void nf_nat_set_seq_adjust(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
}
EXPORT_SYMBOL_GPL(nf_nat_set_seq_adjust);
static void nf_nat_csum(struct sk_buff *skb, struct iphdr *iph, void *data,
int datalen, __sum16 *check, int oldlen)
{
struct rtable *rt = skb_rtable(skb);
if (skb->ip_summed != CHECKSUM_PARTIAL) {
if (!(rt->rt_flags & RTCF_LOCAL) &&
skb->dev->features & NETIF_F_V4_CSUM) {
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum_start = skb_headroom(skb) +
skb_network_offset(skb) +
iph->ihl * 4;
skb->csum_offset = (void *)check - data;
*check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
datalen, iph->protocol, 0);
} else {
*check = 0;
*check = csum_tcpudp_magic(iph->saddr, iph->daddr,
datalen, iph->protocol,
csum_partial(data, datalen,
0));
if (iph->protocol == IPPROTO_UDP && !*check)
*check = CSUM_MANGLED_0;
}
} else
inet_proto_csum_replace2(check, skb,
htons(oldlen), htons(datalen), 1);
}
/* Generic function for mangling variable-length address changes inside
* NATed TCP connections (like the PORT XXX,XXX,XXX,XXX,XXX,XXX
* command in FTP).
@ -169,7 +198,6 @@ int __nf_nat_mangle_tcp_packet(struct sk_buff *skb,
const char *rep_buffer,
unsigned int rep_len, bool adjust)
{
struct rtable *rt = skb_rtable(skb);
struct iphdr *iph;
struct tcphdr *tcph;
int oldlen, datalen;
@ -192,26 +220,7 @@ int __nf_nat_mangle_tcp_packet(struct sk_buff *skb,
match_offset, match_len, rep_buffer, rep_len);
datalen = skb->len - iph->ihl*4;
if (skb->ip_summed != CHECKSUM_PARTIAL) {
if (!(rt->rt_flags & RTCF_LOCAL) &&
skb->dev->features & NETIF_F_V4_CSUM) {
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum_start = skb_headroom(skb) +
skb_network_offset(skb) +
iph->ihl * 4;
skb->csum_offset = offsetof(struct tcphdr, check);
tcph->check = ~tcp_v4_check(datalen,
iph->saddr, iph->daddr, 0);
} else {
tcph->check = 0;
tcph->check = tcp_v4_check(datalen,
iph->saddr, iph->daddr,
csum_partial(tcph,
datalen, 0));
}
} else
inet_proto_csum_replace2(&tcph->check, skb,
htons(oldlen), htons(datalen), 1);
nf_nat_csum(skb, iph, tcph, datalen, &tcph->check, oldlen);
if (adjust && rep_len != match_len)
nf_nat_set_seq_adjust(ct, ctinfo, tcph->seq,
@ -240,7 +249,6 @@ nf_nat_mangle_udp_packet(struct sk_buff *skb,
const char *rep_buffer,
unsigned int rep_len)
{
struct rtable *rt = skb_rtable(skb);
struct iphdr *iph;
struct udphdr *udph;
int datalen, oldlen;
@ -274,29 +282,7 @@ nf_nat_mangle_udp_packet(struct sk_buff *skb,
if (!udph->check && skb->ip_summed != CHECKSUM_PARTIAL)
return 1;
if (skb->ip_summed != CHECKSUM_PARTIAL) {
if (!(rt->rt_flags & RTCF_LOCAL) &&
skb->dev->features & NETIF_F_V4_CSUM) {
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum_start = skb_headroom(skb) +
skb_network_offset(skb) +
iph->ihl * 4;
skb->csum_offset = offsetof(struct udphdr, check);
udph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
datalen, IPPROTO_UDP,
0);
} else {
udph->check = 0;
udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
datalen, IPPROTO_UDP,
csum_partial(udph,
datalen, 0));
if (!udph->check)
udph->check = CSUM_MANGLED_0;
}
} else
inet_proto_csum_replace2(&udph->check, skb,
htons(oldlen), htons(datalen), 1);
nf_nat_csum(skb, iph, udph, datalen, &udph->check, oldlen);
return 1;
}

9
net/ipv4/netfilter/nf_nat_irc.c
View file

@ -45,9 +45,16 @@ static unsigned int help(struct sk_buff *skb,
/* Try to get same port: if not, try to change it. */
for (port = ntohs(exp->saved_proto.tcp.port); port != 0; port++) {
int ret;
exp->tuple.dst.u.tcp.port = htons(port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
port = 0;
break;
}
}
if (port == 0)

15
net/ipv4/netfilter/nf_nat_rule.c
View file

@ -106,16 +106,15 @@ alloc_null_binding(struct nf_conn *ct, unsigned int hooknum)
{
/* Force range to this IP; let proto decide mapping for
per-proto parts (hence not IP_NAT_RANGE_PROTO_SPECIFIED).
Use reply in case it's already been mangled (eg local packet).
*/
__be32 ip
= (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC
? ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip
: ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip);
struct nf_nat_range range
= { IP_NAT_RANGE_MAP_IPS, ip, ip, { 0 }, { 0 } };
struct nf_nat_range range;
range.flags = 0;
pr_debug("Allocating NULL binding for %p (%pI4)\n", ct,
HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC ?
&ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip :
&ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip);
pr_debug("Allocating NULL binding for %p (%pI4)\n", ct, &ip);
return nf_nat_setup_info(ct, &range, HOOK2MANIP(hooknum));
}

29
net/ipv4/netfilter/nf_nat_sip.c
View file

@ -307,9 +307,16 @@ static unsigned int ip_nat_sip_expect(struct sk_buff *skb, unsigned int dataoff,
exp->expectfn = ip_nat_sip_expected;
for (; port != 0; port++) {
int ret;
exp->tuple.dst.u.udp.port = htons(port);
if (nf_ct_expect_related(exp) == 0)
ret = nf_ct_expect_related(exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
port = 0;
break;
}
}
if (port == 0)
@ -480,13 +487,25 @@ static unsigned int ip_nat_sdp_media(struct sk_buff *skb, unsigned int dataoff,
/* Try to get same pair of ports: if not, try to change them. */
for (port = ntohs(rtp_exp->tuple.dst.u.udp.port);
port != 0; port += 2) {
int ret;
rtp_exp->tuple.dst.u.udp.port = htons(port);
if (nf_ct_expect_related(rtp_exp) != 0)
ret = nf_ct_expect_related(rtp_exp);
if (ret == -EBUSY)
continue;
rtcp_exp->tuple.dst.u.udp.port = htons(port + 1);
if (nf_ct_expect_related(rtcp_exp) == 0)
else if (ret < 0) {
port = 0;
break;
nf_ct_unexpect_related(rtp_exp);
}
rtcp_exp->tuple.dst.u.udp.port = htons(port + 1);
ret = nf_ct_expect_related(rtcp_exp);
if (ret == 0)
break;
else if (ret != -EBUSY) {
nf_ct_unexpect_related(rtp_exp);
port = 0;
break;
}
}
if (port == 0)

10
net/ipv4/tcp_ipv4.c
View file

@ -1422,7 +1422,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
newsk = tcp_create_openreq_child(sk, req, skb);
if (!newsk)
goto exit;
goto exit_nonewsk;
newsk->sk_gso_type = SKB_GSO_TCPV4;
sk_setup_caps(newsk, dst);
@ -1469,16 +1469,20 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
}
#endif
if (__inet_inherit_port(sk, newsk) < 0) {
sock_put(newsk);
goto exit;
}
__inet_hash_nolisten(newsk, NULL);
__inet_inherit_port(sk, newsk);
return newsk;
exit_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
exit_nonewsk:
dst_release(dst);
exit:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
dst_release(dst);
return NULL;
}
EXPORT_SYMBOL(tcp_v4_syn_recv_sock);