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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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3
net/ipv6/af_inet6.c
View file

@ -343,7 +343,8 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
*/
v4addr = LOOPBACK4_IPV6;
if (!(addr_type & IPV6_ADDR_MULTICAST)) {
if (!ipv6_chk_addr(net, &addr->sin6_addr,
if (!inet->transparent &&
!ipv6_chk_addr(net, &addr->sin6_addr,
dev, 0)) {
err = -EADDRNOTAVAIL;
goto out_unlock;

19
net/ipv6/datagram.c
View file

@ -577,6 +577,25 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
u8 *ptr = nh + opt->dst1;
put_cmsg(msg, SOL_IPV6, IPV6_2292DSTOPTS, (ptr[1]+1)<<3, ptr);
}
if (np->rxopt.bits.rxorigdstaddr) {
struct sockaddr_in6 sin6;
u16 *ports = (u16 *) skb_transport_header(skb);
if (skb_transport_offset(skb) + 4 <= skb->len) {
/* All current transport protocols have the port numbers in the
* first four bytes of the transport header and this function is
* written with this assumption in mind.
*/
sin6.sin6_family = AF_INET6;
ipv6_addr_copy(&sin6.sin6_addr, &ipv6_hdr(skb)->daddr);
sin6.sin6_port = ports[1];
sin6.sin6_flowinfo = 0;
sin6.sin6_scope_id = 0;
put_cmsg(msg, SOL_IPV6, IPV6_ORIGDSTADDR, sizeof(sin6), &sin6);
}
}
return 0;
}

23
net/ipv6/ipv6_sockglue.c
View file

@ -342,6 +342,21 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
retv = 0;
break;
case IPV6_TRANSPARENT:
if (optlen < sizeof(int))
goto e_inval;
/* we don't have a separate transparent bit for IPV6 we use the one in the IPv4 socket */
inet_sk(sk)->transparent = valbool;
retv = 0;
break;
case IPV6_RECVORIGDSTADDR:
if (optlen < sizeof(int))
goto e_inval;
np->rxopt.bits.rxorigdstaddr = valbool;
retv = 0;
break;
case IPV6_HOPOPTS:
case IPV6_RTHDRDSTOPTS:
case IPV6_RTHDR:
@ -1104,6 +1119,14 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
break;
}
case IPV6_TRANSPARENT:
val = inet_sk(sk)->transparent;
break;
case IPV6_RECVORIGDSTADDR:
val = np->rxopt.bits.rxorigdstaddr;
break;
case IPV6_UNICAST_HOPS:
case IPV6_MULTICAST_HOPS:
{

4
net/ipv6/netfilter/Kconfig
View file

@ -132,10 +132,10 @@ config IP6_NF_MATCH_RT
# The targets
config IP6_NF_TARGET_HL
tristate '"HL" hoplimit target support'
depends on NETFILTER_ADVANCED
depends on NETFILTER_ADVANCED && IP6_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.

5
net/ipv6/netfilter/Makefile
View file

@ -11,10 +11,11 @@ obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
obj-$(CONFIG_IP6_NF_SECURITY) += ip6table_security.o
# objects for l3 independent conntrack
nf_conntrack_ipv6-objs := nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o nf_conntrack_reasm.o
nf_conntrack_ipv6-objs := nf_conntrack_l3proto_ipv6.o nf_conntrack_proto_icmpv6.o
nf_defrag_ipv6-objs := nf_defrag_ipv6_hooks.o nf_conntrack_reasm.o
# l3 independent conntrack
obj-$(CONFIG_NF_CONNTRACK_IPV6) += nf_conntrack_ipv6.o
obj-$(CONFIG_NF_CONNTRACK_IPV6) += nf_conntrack_ipv6.o nf_defrag_ipv6.o
# matches
obj-$(CONFIG_IP6_NF_MATCH_AH) += ip6t_ah.o

84
net/ipv6/netfilter/ip6_tables.c
View file

@ -215,7 +215,7 @@ static inline bool unconditional(const struct ip6t_ip6 *ipv6)
return memcmp(ipv6, &uncond, sizeof(uncond)) == 0;
}
static inline const struct ip6t_entry_target *
static inline const struct xt_entry_target *
ip6t_get_target_c(const struct ip6t_entry *e)
{
return ip6t_get_target((struct ip6t_entry *)e);
@ -260,9 +260,9 @@ get_chainname_rulenum(const struct ip6t_entry *s, const struct ip6t_entry *e,
const char *hookname, const char **chainname,
const char **comment, unsigned int *rulenum)
{
const struct ip6t_standard_target *t = (void *)ip6t_get_target_c(s);
const struct xt_standard_target *t = (void *)ip6t_get_target_c(s);
if (strcmp(t->target.u.kernel.target->name, IP6T_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;
@ -271,7 +271,7 @@ get_chainname_rulenum(const struct ip6t_entry *s, const struct ip6t_entry *e,
if (s->target_offset == sizeof(struct ip6t_entry) &&
strcmp(t->target.u.kernel.target->name,
IP6T_STANDARD_TARGET) == 0 &&
XT_STANDARD_TARGET) == 0 &&
t->verdict < 0 &&
unconditional(&s->ipv6)) {
/* Tail of chains: STANDARD target (return/policy) */
@ -369,7 +369,7 @@ ip6t_do_table(struct sk_buff *skb,
e = get_entry(table_base, private->hook_entry[hook]);
do {
const struct ip6t_entry_target *t;
const struct xt_entry_target *t;
const struct xt_entry_match *ematch;
IP_NF_ASSERT(e);
@ -403,10 +403,10 @@ ip6t_do_table(struct sk_buff *skb,
if (!t->u.kernel.target->target) {
int v;
v = ((struct ip6t_standard_target *)t)->verdict;
v = ((struct xt_standard_target *)t)->verdict;
if (v < 0) {
/* Pop from stack? */
if (v != IP6T_RETURN) {
if (v != XT_RETURN) {
verdict = (unsigned)(-v) - 1;
break;
}
@ -434,7 +434,7 @@ ip6t_do_table(struct sk_buff *skb,
acpar.targinfo = t->data;
verdict = t->u.kernel.target->target(skb, &acpar);
if (verdict == IP6T_CONTINUE)
if (verdict == XT_CONTINUE)
e = ip6t_next_entry(e);
else
/* Verdict */
@ -474,7 +474,7 @@ mark_source_chains(const struct xt_table_info *newinfo,
e->counters.pcnt = pos;
for (;;) {
const struct ip6t_standard_target *t
const struct xt_standard_target *t
= (void *)ip6t_get_target_c(e);
int visited = e->comefrom & (1 << hook);
@ -488,13 +488,13 @@ mark_source_chains(const struct xt_table_info *newinfo,
/* Unconditional return/END. */
if ((e->target_offset == sizeof(struct ip6t_entry) &&
(strcmp(t->target.u.user.name,
IP6T_STANDARD_TARGET) == 0) &&
XT_STANDARD_TARGET) == 0) &&
t->verdict < 0 &&
unconditional(&e->ipv6)) || visited) {
unsigned int oldpos, size;
if ((strcmp(t->target.u.user.name,
IP6T_STANDARD_TARGET) == 0) &&
XT_STANDARD_TARGET) == 0) &&
t->verdict < -NF_MAX_VERDICT - 1) {
duprintf("mark_source_chains: bad "
"negative verdict (%i)\n",
@ -537,7 +537,7 @@ mark_source_chains(const struct xt_table_info *newinfo,
int newpos = t->verdict;
if (strcmp(t->target.u.user.name,
IP6T_STANDARD_TARGET) == 0 &&
XT_STANDARD_TARGET) == 0 &&
newpos >= 0) {
if (newpos > newinfo->size -
sizeof(struct ip6t_entry)) {
@ -565,7 +565,7 @@ mark_source_chains(const struct xt_table_info *newinfo,
return 1;
}
static void cleanup_match(struct ip6t_entry_match *m, struct net *net)
static void cleanup_match(struct xt_entry_match *m, struct net *net)
{
struct xt_mtdtor_param par;
@ -581,14 +581,14 @@ static void cleanup_match(struct ip6t_entry_match *m, struct net *net)
static int
check_entry(const struct ip6t_entry *e, const char *name)
{
const struct ip6t_entry_target *t;
const struct xt_entry_target *t;
if (!ip6_checkentry(&e->ipv6)) {
duprintf("ip_tables: ip check failed %p %s.\n", e, name);
return -EINVAL;
}
if (e->target_offset + sizeof(struct ip6t_entry_target) >
if (e->target_offset + sizeof(struct xt_entry_target) >
e->next_offset)
return -EINVAL;
@ -599,7 +599,7 @@ check_entry(const struct ip6t_entry *e, const char *name)
return 0;
}
static int check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par)
static int check_match(struct xt_entry_match *m, struct xt_mtchk_param *par)
{
const struct ip6t_ip6 *ipv6 = par->entryinfo;
int ret;
@ -618,7 +618,7 @@ static int check_match(struct ip6t_entry_match *m, struct xt_mtchk_param *par)
}
static int
find_check_match(struct ip6t_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;
@ -643,7 +643,7 @@ err:
static int check_target(struct ip6t_entry *e, struct net *net, const char *name)
{
struct ip6t_entry_target *t = ip6t_get_target(e);
struct xt_entry_target *t = ip6t_get_target(e);
struct xt_tgchk_param par = {
.net = net,
.table = name,
@ -670,7 +670,7 @@ static int
find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
unsigned int size)
{
struct ip6t_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
int ret;
unsigned int j;
@ -721,7 +721,7 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
static bool check_underflow(const struct ip6t_entry *e)
{
const struct ip6t_entry_target *t;
const struct xt_entry_target *t;
unsigned int verdict;
if (!unconditional(&e->ipv6))
@ -729,7 +729,7 @@ static bool check_underflow(const struct ip6t_entry *e)
t = ip6t_get_target_c(e);
if (strcmp(t->u.user.name, XT_STANDARD_TARGET) != 0)
return false;
verdict = ((struct ip6t_standard_target *)t)->verdict;
verdict = ((struct xt_standard_target *)t)->verdict;
verdict = -verdict - 1;
return verdict == NF_DROP || verdict == NF_ACCEPT;
}
@ -752,7 +752,7 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
}
if (e->next_offset
< sizeof(struct ip6t_entry) + sizeof(struct ip6t_entry_target)) {
< sizeof(struct ip6t_entry) + sizeof(struct xt_entry_target)) {
duprintf("checking: element %p size %u\n",
e, e->next_offset);
return -EINVAL;
@ -784,7 +784,7 @@ check_entry_size_and_hooks(struct ip6t_entry *e,
static void cleanup_entry(struct ip6t_entry *e, struct net *net)
{
struct xt_tgdtor_param par;
struct ip6t_entry_target *t;
struct xt_entry_target *t;
struct xt_entry_match *ematch;
/* Cleanup all matches */
@ -985,8 +985,8 @@ 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 ip6t_entry_match *m;
const struct ip6t_entry_target *t;
const struct xt_entry_match *m;
const struct xt_entry_target *t;
e = (struct ip6t_entry *)(loc_cpu_entry + off);
if (copy_to_user(userptr + off
@ -1003,7 +1003,7 @@ copy_entries_to_user(unsigned int total_size,
m = (void *)e + i;
if (copy_to_user(userptr + off + i
+ offsetof(struct ip6t_entry_match,
+ offsetof(struct xt_entry_match,
u.user.name),
m->u.kernel.match->name,
strlen(m->u.kernel.match->name)+1)
@ -1015,7 +1015,7 @@ copy_entries_to_user(unsigned int total_size,
t = ip6t_get_target_c(e);
if (copy_to_user(userptr + off + e->target_offset
+ offsetof(struct ip6t_entry_target,
+ offsetof(struct xt_entry_target,
u.user.name),
t->u.kernel.target->name,
strlen(t->u.kernel.target->name)+1) != 0) {
@ -1053,7 +1053,7 @@ static int compat_calc_entry(const struct ip6t_entry *e,
const void *base, struct xt_table_info *newinfo)
{
const struct xt_entry_match *ematch;
const struct ip6t_entry_target *t;
const struct xt_entry_target *t;
unsigned int entry_offset;
int off, i, ret;
@ -1105,7 +1105,7 @@ 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[IP6T_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
struct xt_table *t;
int ret;
@ -1118,7 +1118,7 @@ static int get_info(struct net *net, void __user *user,
if (copy_from_user(name, user, sizeof(name)) != 0)
return -EFAULT;
name[IP6T_TABLE_MAXNAMELEN-1] = '\0';
name[XT_TABLE_MAXNAMELEN-1] = '\0';
#ifdef CONFIG_COMPAT
if (compat)
xt_compat_lock(AF_INET6);
@ -1415,14 +1415,14 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len,
#ifdef CONFIG_COMPAT
struct compat_ip6t_replace {
char name[IP6T_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 ip6t_counters * */
compat_uptr_t counters; /* struct xt_counters * */
struct compat_ip6t_entry entries[0];
};
@ -1431,7 +1431,7 @@ compat_copy_entry_to_user(struct ip6t_entry *e, void __user **dstptr,
unsigned int *size, struct xt_counters *counters,
unsigned int i)
{
struct ip6t_entry_target *t;
struct xt_entry_target *t;
struct compat_ip6t_entry __user *ce;
u_int16_t target_offset, next_offset;
compat_uint_t origsize;
@ -1466,7 +1466,7 @@ compat_copy_entry_to_user(struct ip6t_entry *e, void __user **dstptr,
}
static int
compat_find_calc_match(struct ip6t_entry_match *m,
compat_find_calc_match(struct xt_entry_match *m,
const char *name,
const struct ip6t_ip6 *ipv6,
unsigned int hookmask,
@ -1488,7 +1488,7 @@ compat_find_calc_match(struct ip6t_entry_match *m,
static void compat_release_entry(struct compat_ip6t_entry *e)
{
struct ip6t_entry_target *t;
struct xt_entry_target *t;
struct xt_entry_match *ematch;
/* Cleanup all matches */
@ -1509,7 +1509,7 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
const char *name)
{
struct xt_entry_match *ematch;
struct ip6t_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
unsigned int entry_offset;
unsigned int j;
@ -1591,7 +1591,7 @@ compat_copy_entry_from_user(struct compat_ip6t_entry *e, void **dstptr,
unsigned int *size, const char *name,
struct xt_table_info *newinfo, unsigned char *base)
{
struct ip6t_entry_target *t;
struct xt_entry_target *t;
struct xt_target *target;
struct ip6t_entry *de;
unsigned int origsize;
@ -1899,7 +1899,7 @@ compat_do_ip6t_set_ctl(struct sock *sk, int cmd, void __user *user,
}
struct compat_ip6t_get_entries {
char name[IP6T_TABLE_MAXNAMELEN];
char name[XT_TABLE_MAXNAMELEN];
compat_uint_t size;
struct compat_ip6t_entry entrytable[0];
};
@ -2054,7 +2054,7 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
case IP6T_SO_GET_REVISION_MATCH:
case IP6T_SO_GET_REVISION_TARGET: {
struct ip6t_get_revision rev;
struct xt_get_revision rev;
int target;
if (*len != sizeof(rev)) {
@ -2191,7 +2191,7 @@ static int icmp6_checkentry(const struct xt_mtchk_param *par)
/* The built-in targets: standard (NULL) and error. */
static struct xt_target ip6t_builtin_tg[] __read_mostly = {
{
.name = IP6T_STANDARD_TARGET,
.name = XT_STANDARD_TARGET,
.targetsize = sizeof(int),
.family = NFPROTO_IPV6,
#ifdef CONFIG_COMPAT
@ -2201,9 +2201,9 @@ static struct xt_target ip6t_builtin_tg[] __read_mostly = {
#endif
},
{
.name = IP6T_ERROR_TARGET,
.name = XT_ERROR_TARGET,
.target = ip6t_error,
.targetsize = IP6T_FUNCTION_MAXNAMELEN,
.targetsize = XT_FUNCTION_MAXNAMELEN,
.family = NFPROTO_IPV6,
},
};

157
net/ipv6/netfilter/ip6t_LOG.c
View file

@ -23,6 +23,7 @@
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_ipv6/ip6_tables.h>
#include <net/netfilter/nf_log.h>
#include <net/netfilter/xt_log.h>
MODULE_AUTHOR("Jan Rekorajski <[email protected]>");
MODULE_DESCRIPTION("Xtables: IPv6 packet logging to syslog");
@ -32,11 +33,9 @@ struct in_device;
#include <net/route.h>
#include <linux/netfilter_ipv6/ip6t_LOG.h>
/* 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 ip6hoff,
int recurse)
{
@ -55,15 +54,15 @@ static void dump_packet(const struct nf_loginfo *info,
ih = skb_header_pointer(skb, ip6hoff, sizeof(_ip6h), &_ip6h);
if (ih == NULL) {
printk("TRUNCATED");
sb_add(m, "TRUNCATED");
return;
}
/* Max length: 88 "SRC=0000.0000.0000.0000.0000.0000.0000.0000 DST=0000.0000.0000.0000.0000.0000.0000.0000 " */
printk("SRC=%pI6 DST=%pI6 ", &ih->saddr, &ih->daddr);
sb_add(m, "SRC=%pI6 DST=%pI6 ", &ih->saddr, &ih->daddr);
/* Max length: 44 "LEN=65535 TC=255 HOPLIMIT=255 FLOWLBL=FFFFF " */
printk("LEN=%Zu TC=%u HOPLIMIT=%u FLOWLBL=%u ",
sb_add(m, "LEN=%Zu TC=%u HOPLIMIT=%u FLOWLBL=%u ",
ntohs(ih->payload_len) + sizeof(struct ipv6hdr),
(ntohl(*(__be32 *)ih) & 0x0ff00000) >> 20,
ih->hop_limit,
@ -78,35 +77,35 @@ static void dump_packet(const struct nf_loginfo *info,
hp = skb_header_pointer(skb, ptr, sizeof(_hdr), &_hdr);
if (hp == NULL) {
printk("TRUNCATED");
sb_add(m, "TRUNCATED");
return;
}
/* Max length: 48 "OPT (...) " */
if (logflags & IP6T_LOG_IPOPT)
printk("OPT ( ");
sb_add(m, "OPT ( ");
switch (currenthdr) {
case IPPROTO_FRAGMENT: {
struct frag_hdr _fhdr;
const struct frag_hdr *fh;
printk("FRAG:");
sb_add(m, "FRAG:");
fh = skb_header_pointer(skb, ptr, sizeof(_fhdr),
&_fhdr);
if (fh == NULL) {
printk("TRUNCATED ");
sb_add(m, "TRUNCATED ");
return;
}
/* Max length: 6 "65535 " */
printk("%u ", ntohs(fh->frag_off) & 0xFFF8);
sb_add(m, "%u ", ntohs(fh->frag_off) & 0xFFF8);
/* Max length: 11 "INCOMPLETE " */
if (fh->frag_off & htons(0x0001))
printk("INCOMPLETE ");
sb_add(m, "INCOMPLETE ");
printk("ID:%08x ", ntohl(fh->identification));
sb_add(m, "ID:%08x ", ntohl(fh->identification));
if (ntohs(fh->frag_off) & 0xFFF8)
fragment = 1;
@ -120,7 +119,7 @@ static void dump_packet(const struct nf_loginfo *info,
case IPPROTO_HOPOPTS:
if (fragment) {
if (logflags & IP6T_LOG_IPOPT)
printk(")");
sb_add(m, ")");
return;
}
hdrlen = ipv6_optlen(hp);
@ -132,10 +131,10 @@ static void dump_packet(const struct nf_loginfo *info,
const struct ip_auth_hdr *ah;
/* Max length: 3 "AH " */
printk("AH ");
sb_add(m, "AH ");
if (fragment) {
printk(")");
sb_add(m, ")");
return;
}
@ -146,13 +145,13 @@ static void dump_packet(const struct nf_loginfo *info,
* Max length: 26 "INCOMPLETE [65535
* bytes] )"
*/
printk("INCOMPLETE [%u bytes] )",
sb_add(m, "INCOMPLETE [%u bytes] )",
skb->len - ptr);
return;
}
/* Length: 15 "SPI=0xF1234567 */
printk("SPI=0x%x ", ntohl(ah->spi));
sb_add(m, "SPI=0x%x ", ntohl(ah->spi));
}
@ -164,10 +163,10 @@ static void dump_packet(const struct nf_loginfo *info,
const struct ip_esp_hdr *eh;
/* Max length: 4 "ESP " */
printk("ESP ");
sb_add(m, "ESP ");
if (fragment) {
printk(")");
sb_add(m, ")");
return;
}
@ -177,23 +176,23 @@ static void dump_packet(const struct nf_loginfo *info,
eh = skb_header_pointer(skb, ptr, sizeof(_esph),
&_esph);
if (eh == NULL) {
printk("INCOMPLETE [%u bytes] )",
sb_add(m, "INCOMPLETE [%u bytes] )",
skb->len - ptr);
return;
}
/* Length: 16 "SPI=0xF1234567 )" */
printk("SPI=0x%x )", ntohl(eh->spi) );
sb_add(m, "SPI=0x%x )", ntohl(eh->spi) );
}
return;
default:
/* Max length: 20 "Unknown Ext Hdr 255" */
printk("Unknown Ext Hdr %u", currenthdr);
sb_add(m, "Unknown Ext Hdr %u", currenthdr);
return;
}
if (logflags & IP6T_LOG_IPOPT)
printk(") ");
sb_add(m, ") ");
currenthdr = hp->nexthdr;
ptr += hdrlen;
@ -205,7 +204,7 @@ 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 (fragment)
break;
@ -213,40 +212,40 @@ static void dump_packet(const struct nf_loginfo *info,
/* Max length: 25 "INCOMPLETE [65535 bytes] " */
th = skb_header_pointer(skb, ptr, sizeof(_tcph), &_tcph);
if (th == NULL) {
printk("INCOMPLETE [%u bytes] ", skb->len - ptr);
sb_add(m, "INCOMPLETE [%u bytes] ", skb->len - ptr);
return;
}
/* 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 & IP6T_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=0x3C " */
printk("RES=0x%02x ", (u_int8_t)(ntohl(tcp_flag_word(th) & TCP_RESERVED_BITS) >> 22));
sb_add(m, "RES=0x%02x ", (u_int8_t)(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 & IP6T_LOG_TCPOPT) &&
th->doff * 4 > sizeof(struct tcphdr)) {
@ -260,15 +259,15 @@ static void dump_packet(const struct nf_loginfo *info,
ptr + sizeof(struct tcphdr),
optsize, _opt);
if (op == NULL) {
printk("OPT (TRUNCATED)");
sb_add(m, "OPT (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;
}
@ -279,9 +278,9 @@ static void dump_packet(const struct nf_loginfo *info,
if (currenthdr == 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 (fragment)
break;
@ -289,12 +288,12 @@ static void dump_packet(const struct nf_loginfo *info,
/* Max length: 25 "INCOMPLETE [65535 bytes] " */
uh = skb_header_pointer(skb, ptr, sizeof(_udph), &_udph);
if (uh == NULL) {
printk("INCOMPLETE [%u bytes] ", skb->len - ptr);
sb_add(m, "INCOMPLETE [%u bytes] ", skb->len - ptr);
return;
}
/* 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;
@ -304,7 +303,7 @@ static void dump_packet(const struct nf_loginfo *info,
const struct icmp6hdr *ic;
/* Max length: 13 "PROTO=ICMPv6 " */
printk("PROTO=ICMPv6 ");
sb_add(m, "PROTO=ICMPv6 ");
if (fragment)
break;
@ -312,18 +311,18 @@ static void dump_packet(const struct nf_loginfo *info,
/* Max length: 25 "INCOMPLETE [65535 bytes] " */
ic = skb_header_pointer(skb, ptr, sizeof(_icmp6h), &_icmp6h);
if (ic == NULL) {
printk("INCOMPLETE [%u bytes] ", skb->len - ptr);
sb_add(m, "INCOMPLETE [%u bytes] ", skb->len - ptr);
return;
}
/* Max length: 18 "TYPE=255 CODE=255 " */
printk("TYPE=%u CODE=%u ", ic->icmp6_type, ic->icmp6_code);
sb_add(m, "TYPE=%u CODE=%u ", ic->icmp6_type, ic->icmp6_code);
switch (ic->icmp6_type) {
case ICMPV6_ECHO_REQUEST:
case ICMPV6_ECHO_REPLY:
/* Max length: 19 "ID=65535 SEQ=65535 " */
printk("ID=%u SEQ=%u ",
sb_add(m, "ID=%u SEQ=%u ",
ntohs(ic->icmp6_identifier),
ntohs(ic->icmp6_sequence));
break;
@ -334,35 +333,35 @@ static void dump_packet(const struct nf_loginfo *info,
case ICMPV6_PARAMPROB:
/* Max length: 17 "POINTER=ffffffff " */
printk("POINTER=%08x ", ntohl(ic->icmp6_pointer));
sb_add(m, "POINTER=%08x ", ntohl(ic->icmp6_pointer));
/* Fall through */
case ICMPV6_DEST_UNREACH:
case ICMPV6_PKT_TOOBIG:
case ICMPV6_TIME_EXCEED:
/* Max length: 3+maxlen */
if (recurse) {
printk("[");
dump_packet(info, skb, ptr + sizeof(_icmp6h),
0);
printk("] ");
sb_add(m, "[");
dump_packet(m, info, skb,
ptr + sizeof(_icmp6h), 0);
sb_add(m, "] ");
}
/* Max length: 10 "MTU=65535 " */
if (ic->icmp6_type == ICMPV6_PKT_TOOBIG)
printk("MTU=%u ", ntohl(ic->icmp6_mtu));
sb_add(m, "MTU=%u ", ntohl(ic->icmp6_mtu));
}
break;
}
/* Max length: 10 "PROTO=255 " */
default:
printk("PROTO=%u ", currenthdr);
sb_add(m, "PROTO=%u ", currenthdr);
}
/* Max length: 15 "UID=4294967295 " */
if ((logflags & IP6T_LOG_UID) && recurse && 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);
@ -370,10 +369,11 @@ static void dump_packet(const struct nf_loginfo *info,
/* Max length: 16 "MARK=0xFFFFFFFF " */
if (!recurse && skb->mark)
printk("MARK=0x%x ", skb->mark);
sb_add(m, "MARK=0x%x ", skb->mark);
}
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;
@ -387,7 +387,7 @@ 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;
@ -396,7 +396,7 @@ 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);
@ -408,19 +408,19 @@ fallback:
p = NULL;
if (p != NULL) {
printk("%02x", *p++);
sb_add(m, "%02x", *p++);
for (i = 1; i < len; i++)
printk(":%02x", p[i]);
sb_add(m, ":%02x", p[i]);
}
printk(" ");
sb_add(m, " ");
if (dev->type == ARPHRD_SIT) {
const struct iphdr *iph =
(struct iphdr *)skb_mac_header(skb);
printk("TUNNEL=%pI4->%pI4 ", &iph->saddr, &iph->daddr);
sb_add(m, "TUNNEL=%pI4->%pI4 ", &iph->saddr, &iph->daddr);
}
} else
printk(" ");
sb_add(m, " ");
}
static struct nf_loginfo default_loginfo = {
@ -442,22 +442,23 @@ ip6t_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,
prefix,
in ? in->name : "",
out ? out->name : "");
sb_add(m, "<%d>%sIN=%s OUT=%s ", loginfo->u.log.level,
prefix,
in ? in->name : "",
out ? out->name : "");
/* MAC logging for input path only. */
if (in && !out)
dump_mac_header(loginfo, skb);
dump_mac_header(m, loginfo, skb);
dump_packet(loginfo, skb, skb_network_offset(skb), 1);
printk("\n");
spin_unlock_bh(&log_lock);
dump_packet(m, loginfo, skb, skb_network_offset(skb), 1);
sb_close(m);
}
static unsigned int

78
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
View file

@ -16,7 +16,6 @@
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/icmp.h>
#include <linux/sysctl.h>
#include <net/ipv6.h>
#include <net/inet_frag.h>
@ -29,6 +28,7 @@
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
#include <net/netfilter/nf_log.h>
static bool ipv6_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff,
@ -189,53 +189,6 @@ out:
return nf_conntrack_confirm(skb);
}
static enum ip6_defrag_users nf_ct6_defrag_user(unsigned int hooknum,
struct sk_buff *skb)
{
u16 zone = NF_CT_DEFAULT_ZONE;
if (skb->nfct)
zone = nf_ct_zone((struct nf_conn *)skb->nfct);
#ifdef CONFIG_BRIDGE_NETFILTER
if (skb->nf_bridge &&
skb->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)
return IP6_DEFRAG_CONNTRACK_BRIDGE_IN + zone;
#endif
if (hooknum == NF_INET_PRE_ROUTING)
return IP6_DEFRAG_CONNTRACK_IN + zone;
else
return IP6_DEFRAG_CONNTRACK_OUT + zone;
}
static unsigned int ipv6_defrag(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *reasm;
/* Previously seen (loopback)? */
if (skb->nfct && !nf_ct_is_template((struct nf_conn *)skb->nfct))
return NF_ACCEPT;
reasm = nf_ct_frag6_gather(skb, nf_ct6_defrag_user(hooknum, skb));
/* queued */
if (reasm == NULL)
return NF_STOLEN;
/* error occured or not fragmented */
if (reasm == skb)
return NF_ACCEPT;
nf_ct_frag6_output(hooknum, reasm, (struct net_device *)in,
(struct net_device *)out, okfn);
return NF_STOLEN;
}
static unsigned int __ipv6_conntrack_in(struct net *net,
unsigned int hooknum,
struct sk_buff *skb,
@ -287,13 +240,6 @@ static unsigned int ipv6_conntrack_local(unsigned int hooknum,
}
static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_conntrack_in,
.owner = THIS_MODULE,
@ -308,13 +254,6 @@ static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = {
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK,
},
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_confirm,
.owner = THIS_MODULE,
@ -386,10 +325,6 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = {
.nlattr_tuple_size = ipv6_nlattr_tuple_size,
.nlattr_to_tuple = ipv6_nlattr_to_tuple,
.nla_policy = ipv6_nla_policy,
#endif
#ifdef CONFIG_SYSCTL
.ctl_table_path = nf_net_netfilter_sysctl_path,
.ctl_table = nf_ct_ipv6_sysctl_table,
#endif
.me = THIS_MODULE,
};
@ -403,16 +338,12 @@ static int __init nf_conntrack_l3proto_ipv6_init(void)
int ret = 0;
need_conntrack();
nf_defrag_ipv6_enable();
ret = nf_ct_frag6_init();
if (ret < 0) {
pr_err("nf_conntrack_ipv6: can't initialize frag6.\n");
return ret;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_tcp6);
if (ret < 0) {
pr_err("nf_conntrack_ipv6: can't register tcp.\n");
goto cleanup_frag6;
return ret;
}
ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_udp6);
@ -450,8 +381,6 @@ static int __init nf_conntrack_l3proto_ipv6_init(void)
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6);
cleanup_tcp:
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6);
cleanup_frag6:
nf_ct_frag6_cleanup();
return ret;
}
@ -463,7 +392,6 @@ static void __exit nf_conntrack_l3proto_ipv6_fini(void)
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmpv6);
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6);
nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6);
nf_ct_frag6_cleanup();
}
module_init(nf_conntrack_l3proto_ipv6_init);

14
net/ipv6/netfilter/nf_conntrack_reasm.c
View file

@ -73,7 +73,7 @@ static struct inet_frags nf_frags;
static struct netns_frags nf_init_frags;
#ifdef CONFIG_SYSCTL
struct ctl_table nf_ct_ipv6_sysctl_table[] = {
struct ctl_table nf_ct_frag6_sysctl_table[] = {
{
.procname = "nf_conntrack_frag6_timeout",
.data = &nf_init_frags.timeout,
@ -97,6 +97,8 @@ struct ctl_table nf_ct_ipv6_sysctl_table[] = {
},
{ }
};
static struct ctl_table_header *nf_ct_frag6_sysctl_header;
#endif
static unsigned int nf_hashfn(struct inet_frag_queue *q)
@ -623,11 +625,21 @@ int nf_ct_frag6_init(void)
inet_frags_init_net(&nf_init_frags);
inet_frags_init(&nf_frags);
nf_ct_frag6_sysctl_header = register_sysctl_paths(nf_net_netfilter_sysctl_path,
nf_ct_frag6_sysctl_table);
if (!nf_ct_frag6_sysctl_header) {
inet_frags_fini(&nf_frags);
return -ENOMEM;
}
return 0;
}
void nf_ct_frag6_cleanup(void)
{
unregister_sysctl_table(nf_ct_frag6_sysctl_header);
nf_ct_frag6_sysctl_header = NULL;
inet_frags_fini(&nf_frags);
nf_init_frags.low_thresh = 0;

131
net/ipv6/netfilter/nf_defrag_ipv6_hooks.c Normal file
View file

@ -0,0 +1,131 @@
/* (C) 1999-2001 Paul `Rusty' Russell
* (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/types.h>
#include <linux/ipv6.h>
#include <linux/in6.h>
#include <linux/netfilter.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/icmp.h>
#include <linux/sysctl.h>
#include <net/ipv6.h>
#include <net/inet_frag.h>
#include <linux/netfilter_ipv6.h>
#include <linux/netfilter_bridge.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_zones.h>
#include <net/netfilter/ipv6/nf_conntrack_ipv6.h>
#include <net/netfilter/ipv6/nf_defrag_ipv6.h>
static enum ip6_defrag_users nf_ct6_defrag_user(unsigned int hooknum,
struct sk_buff *skb)
{
u16 zone = NF_CT_DEFAULT_ZONE;
if (skb->nfct)
zone = nf_ct_zone((struct nf_conn *)skb->nfct);
#ifdef CONFIG_BRIDGE_NETFILTER
if (skb->nf_bridge &&
skb->nf_bridge->mask & BRNF_NF_BRIDGE_PREROUTING)
return IP6_DEFRAG_CONNTRACK_BRIDGE_IN + zone;
#endif
if (hooknum == NF_INET_PRE_ROUTING)
return IP6_DEFRAG_CONNTRACK_IN + zone;
else
return IP6_DEFRAG_CONNTRACK_OUT + zone;
}
static unsigned int ipv6_defrag(unsigned int hooknum,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
struct sk_buff *reasm;
/* Previously seen (loopback)? */
if (skb->nfct && !nf_ct_is_template((struct nf_conn *)skb->nfct))
return NF_ACCEPT;
reasm = nf_ct_frag6_gather(skb, nf_ct6_defrag_user(hooknum, skb));
/* queued */
if (reasm == NULL)
return NF_STOLEN;
/* error occured or not fragmented */
if (reasm == skb)
return NF_ACCEPT;
nf_ct_frag6_output(hooknum, reasm, (struct net_device *)in,
(struct net_device *)out, okfn);
return NF_STOLEN;
}
static struct nf_hook_ops ipv6_defrag_ops[] = {
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_PRE_ROUTING,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
{
.hook = ipv6_defrag,
.owner = THIS_MODULE,
.pf = NFPROTO_IPV6,
.hooknum = NF_INET_LOCAL_OUT,
.priority = NF_IP6_PRI_CONNTRACK_DEFRAG,
},
};
static int __init nf_defrag_init(void)
{
int ret = 0;
ret = nf_ct_frag6_init();
if (ret < 0) {
pr_err("nf_defrag_ipv6: can't initialize frag6.\n");
return ret;
}
ret = nf_register_hooks(ipv6_defrag_ops, ARRAY_SIZE(ipv6_defrag_ops));
if (ret < 0) {
pr_err("nf_defrag_ipv6: can't register hooks\n");
goto cleanup_frag6;
}
return ret;
cleanup_frag6:
nf_ct_frag6_cleanup();
return ret;
}
static void __exit nf_defrag_fini(void)
{
nf_unregister_hooks(ipv6_defrag_ops, ARRAY_SIZE(ipv6_defrag_ops));
nf_ct_frag6_cleanup();
}
void nf_defrag_ipv6_enable(void)
{
}
EXPORT_SYMBOL_GPL(nf_defrag_ipv6_enable);
module_init(nf_defrag_init);
module_exit(nf_defrag_fini);
MODULE_LICENSE("GPL");

12
net/ipv6/tcp_ipv6.c
View file

@ -1409,7 +1409,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
newsk = tcp_create_openreq_child(sk, req, skb);
if (newsk == NULL)
goto out;
goto out_nonewsk;
/*
* No need to charge this sock to the relevant IPv6 refcnt debug socks
@ -1497,18 +1497,22 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
}
#endif
if (__inet_inherit_port(sk, newsk) < 0) {
sock_put(newsk);
goto out;
}
__inet6_hash(newsk, NULL);
__inet_inherit_port(sk, newsk);
return newsk;
out_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
out_nonewsk:
if (opt && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
out:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
return NULL;
}

16
net/ipv6/udp.c
View file

@ -122,8 +122,8 @@ static void udp_v6_rehash(struct sock *sk)
static inline int compute_score(struct sock *sk, struct net *net,
unsigned short hnum,
struct in6_addr *saddr, __be16 sport,
struct in6_addr *daddr, __be16 dport,
const struct in6_addr *saddr, __be16 sport,
const struct in6_addr *daddr, __be16 dport,
int dif)
{
int score = -1;
@ -239,8 +239,8 @@ exact_match:
}
static struct sock *__udp6_lib_lookup(struct net *net,
struct in6_addr *saddr, __be16 sport,
struct in6_addr *daddr, __be16 dport,
const struct in6_addr *saddr, __be16 sport,
const struct in6_addr *daddr, __be16 dport,
int dif, struct udp_table *udptable)
{
struct sock *sk, *result;
@ -320,6 +320,14 @@ static struct sock *__udp6_lib_lookup_skb(struct sk_buff *skb,
udptable);
}
struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport,
const struct in6_addr *daddr, __be16 dport, int dif)
{
return __udp6_lib_lookup(net, saddr, sport, daddr, dport, dif, &udp_table);
}
EXPORT_SYMBOL_GPL(udp6_lib_lookup);
/*
* This should be easy, if there is something there we
* return it, otherwise we block.