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authorDavid S. Miller <davem@davemloft.net>2013-06-06 01:03:06 -0700
committerDavid S. Miller <davem@davemloft.net>2013-06-06 01:03:06 -0700
commit143554ace8919d5ef3cc8424c0b06dbd3d671b4e (patch)
treeab1c540cf8086c513aa7c0f831fb556263bf72d7 /net
parent6bc19fb82d4c05a9eee19d6d2aab2ce26e499ec2 (diff)
parent7f87712c0152511a1842698ad8dca425fee2dc4f (diff)
downloadop-kernel-dev-143554ace8919d5ef3cc8424c0b06dbd3d671b4e.zip
op-kernel-dev-143554ace8919d5ef3cc8424c0b06dbd3d671b4e.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Conflicts: net/netfilter/nf_log.c The conflict in nf_log.c is that in 'net' we added CONFIG_PROC_FS protection around foo_proc_entry() calls to fix a build failure, whereas in Pablo's tree a guard if() test around a call is remove_proc_entry() was removed. Trivially resolved. Pablo Neira Ayuso says: ==================== The following patchset contains the first batch of Netfilter/IPVS updates for your net-next tree, they are: * Three patches with improvements and code refactorization for nfnetlink_queue, from Florian Westphal. * FTP helper now parses replies without brackets, as RFC1123 recommends, from Jeff Mahoney. * Rise a warning to tell everyone about ULOG deprecation, NFLOG has been already in the kernel tree for long time and supersedes the old logging over netlink stub, from myself. * Don't panic if we fail to load netfilter core framework, just bail out instead, from myself. * Add cond_resched_rcu, used by IPVS to allow rescheduling while walking over big hashtables, from Simon Horman. * Change type of IPVS sysctl_sync_qlen_max sysctl to avoid possible overflow, from Zhang Yanfei. * Use strlcpy instead of strncpy to skip zeroing of already initialized area to write the extension names in ebtables, from Chen Gang. * Use already existing per-cpu notrack object from xt_CT, from Eric Dumazet. * Save explicit socket lookup in xt_socket now that we have early demux, also from Eric Dumazet. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/bridge/netfilter/ebt_ulog.c6
-rw-r--r--net/bridge/netfilter/ebtables.c6
-rw-r--r--net/ipv4/netfilter/Kconfig2
-rw-r--r--net/ipv4/netfilter/ipt_ULOG.c6
-rw-r--r--net/netfilter/core.c21
-rw-r--r--net/netfilter/ipvs/ip_vs_conn.c23
-rw-r--r--net/netfilter/ipvs/ip_vs_ctl.c4
-rw-r--r--net/netfilter/nf_conntrack_ftp.c73
-rw-r--r--net/netfilter/nf_log.c4
-rw-r--r--net/netfilter/nfnetlink_queue_core.c29
-rw-r--r--net/netfilter/xt_CT.c10
-rw-r--r--net/netfilter/xt_socket.c26
-rw-r--r--net/socket.c4
13 files changed, 135 insertions, 79 deletions
diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index df0364a..5180938 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -271,6 +271,12 @@ static int ebt_ulog_tg_check(const struct xt_tgchk_param *par)
{
struct ebt_ulog_info *uloginfo = par->targinfo;
+ if (!par->net->xt.ebt_ulog_warn_deprecated) {
+ pr_info("ebt_ulog is deprecated and it will be removed soon, "
+ "use ebt_nflog instead\n");
+ par->net->xt.ebt_ulog_warn_deprecated = true;
+ }
+
if (uloginfo->nlgroup > 31)
return -EINVAL;
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 3d110c4..ac78024 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1339,7 +1339,7 @@ static inline int ebt_make_matchname(const struct ebt_entry_match *m,
/* ebtables expects 32 bytes long names but xt_match names are 29 bytes
long. Copy 29 bytes and fill remaining bytes with zeroes. */
- strncpy(name, m->u.match->name, sizeof(name));
+ strlcpy(name, m->u.match->name, sizeof(name));
if (copy_to_user(hlp, name, EBT_FUNCTION_MAXNAMELEN))
return -EFAULT;
return 0;
@@ -1351,7 +1351,7 @@ static inline int ebt_make_watchername(const struct ebt_entry_watcher *w,
char __user *hlp = ubase + ((char *)w - base);
char name[EBT_FUNCTION_MAXNAMELEN] = {};
- strncpy(name, w->u.watcher->name, sizeof(name));
+ strlcpy(name, w->u.watcher->name, sizeof(name));
if (copy_to_user(hlp , name, EBT_FUNCTION_MAXNAMELEN))
return -EFAULT;
return 0;
@@ -1377,7 +1377,7 @@ ebt_make_names(struct ebt_entry *e, const char *base, char __user *ubase)
ret = EBT_WATCHER_ITERATE(e, ebt_make_watchername, base, ubase);
if (ret != 0)
return ret;
- strncpy(name, t->u.target->name, sizeof(name));
+ strlcpy(name, t->u.target->name, sizeof(name));
if (copy_to_user(hlp, name, EBT_FUNCTION_MAXNAMELEN))
return -EFAULT;
return 0;
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index e7916c1..4e90280 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -111,7 +111,7 @@ config IP_NF_TARGET_REJECT
To compile it as a module, choose M here. If unsure, say N.
config IP_NF_TARGET_ULOG
- tristate "ULOG target support"
+ tristate "ULOG target support (obsolete)"
default m if NETFILTER_ADVANCED=n
---help---
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index ff4b781..57c6711 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -330,6 +330,12 @@ static int ulog_tg_check(const struct xt_tgchk_param *par)
{
const struct ipt_ulog_info *loginfo = par->targinfo;
+ if (!par->net->xt.ulog_warn_deprecated) {
+ pr_info("ULOG is deprecated and it will be removed soon, "
+ "use NFLOG instead\n");
+ par->net->xt.ulog_warn_deprecated = true;
+ }
+
if (loginfo->prefix[sizeof(loginfo->prefix) - 1] != '\0') {
pr_debug("prefix not null-terminated\n");
return -EINVAL;
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 857ca9f..2217363 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -304,17 +304,26 @@ static struct pernet_operations netfilter_net_ops = {
.exit = netfilter_net_exit,
};
-void __init netfilter_init(void)
+int __init netfilter_init(void)
{
- int i, h;
+ int i, h, ret;
+
for (i = 0; i < ARRAY_SIZE(nf_hooks); i++) {
for (h = 0; h < NF_MAX_HOOKS; h++)
INIT_LIST_HEAD(&nf_hooks[i][h]);
}
- if (register_pernet_subsys(&netfilter_net_ops) < 0)
- panic("cannot create netfilter proc entry");
+ ret = register_pernet_subsys(&netfilter_net_ops);
+ if (ret < 0)
+ goto err;
+
+ ret = netfilter_log_init();
+ if (ret < 0)
+ goto err_pernet;
- if (netfilter_log_init() < 0)
- panic("cannot initialize nf_log");
+ return 0;
+err_pernet:
+ unregister_pernet_subsys(&netfilter_net_ops);
+err:
+ return ret;
}
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index a083bda..c8c52a9 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -975,8 +975,7 @@ static void *ip_vs_conn_array(struct seq_file *seq, loff_t pos)
return cp;
}
}
- rcu_read_unlock();
- rcu_read_lock();
+ cond_resched_rcu();
}
return NULL;
@@ -1015,8 +1014,7 @@ static void *ip_vs_conn_seq_next(struct seq_file *seq, void *v, loff_t *pos)
iter->l = &ip_vs_conn_tab[idx];
return cp;
}
- rcu_read_unlock();
- rcu_read_lock();
+ cond_resched_rcu();
}
iter->l = NULL;
return NULL;
@@ -1206,17 +1204,13 @@ void ip_vs_random_dropentry(struct net *net)
int idx;
struct ip_vs_conn *cp, *cp_c;
+ rcu_read_lock();
/*
* Randomly scan 1/32 of the whole table every second
*/
for (idx = 0; idx < (ip_vs_conn_tab_size>>5); idx++) {
unsigned int hash = net_random() & ip_vs_conn_tab_mask;
- /*
- * Lock is actually needed in this loop.
- */
- rcu_read_lock();
-
hlist_for_each_entry_rcu(cp, &ip_vs_conn_tab[hash], c_list) {
if (cp->flags & IP_VS_CONN_F_TEMPLATE)
/* connection template */
@@ -1252,8 +1246,9 @@ void ip_vs_random_dropentry(struct net *net)
__ip_vs_conn_put(cp);
}
}
- rcu_read_unlock();
+ cond_resched_rcu();
}
+ rcu_read_unlock();
}
@@ -1267,11 +1262,8 @@ static void ip_vs_conn_flush(struct net *net)
struct netns_ipvs *ipvs = net_ipvs(net);
flush_again:
+ rcu_read_lock();
for (idx = 0; idx < ip_vs_conn_tab_size; idx++) {
- /*
- * Lock is actually needed in this loop.
- */
- rcu_read_lock();
hlist_for_each_entry_rcu(cp, &ip_vs_conn_tab[idx], c_list) {
if (!ip_vs_conn_net_eq(cp, net))
@@ -1286,8 +1278,9 @@ flush_again:
__ip_vs_conn_put(cp);
}
}
- rcu_read_unlock();
+ cond_resched_rcu();
}
+ rcu_read_unlock();
/* the counter may be not NULL, because maybe some conn entries
are run by slow timer handler or unhashed but still referred */
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 7c3ed42..df05c1c 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -1716,9 +1716,9 @@ static struct ctl_table vs_vars[] = {
},
{
.procname = "sync_qlen_max",
- .maxlen = sizeof(int),
+ .maxlen = sizeof(unsigned long),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_doulongvec_minmax,
},
{
.procname = "sync_sock_size",
diff --git a/net/netfilter/nf_conntrack_ftp.c b/net/netfilter/nf_conntrack_ftp.c
index 6b21707..b8a0924 100644
--- a/net/netfilter/nf_conntrack_ftp.c
+++ b/net/netfilter/nf_conntrack_ftp.c
@@ -55,10 +55,14 @@ unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb,
struct nf_conntrack_expect *exp);
EXPORT_SYMBOL_GPL(nf_nat_ftp_hook);
-static int try_rfc959(const char *, size_t, struct nf_conntrack_man *, char);
-static int try_eprt(const char *, size_t, struct nf_conntrack_man *, char);
+static int try_rfc959(const char *, size_t, struct nf_conntrack_man *,
+ char, unsigned int *);
+static int try_rfc1123(const char *, size_t, struct nf_conntrack_man *,
+ char, unsigned int *);
+static int try_eprt(const char *, size_t, struct nf_conntrack_man *,
+ char, unsigned int *);
static int try_epsv_response(const char *, size_t, struct nf_conntrack_man *,
- char);
+ char, unsigned int *);
static struct ftp_search {
const char *pattern;
@@ -66,7 +70,7 @@ static struct ftp_search {
char skip;
char term;
enum nf_ct_ftp_type ftptype;
- int (*getnum)(const char *, size_t, struct nf_conntrack_man *, char);
+ int (*getnum)(const char *, size_t, struct nf_conntrack_man *, char, unsigned int *);
} search[IP_CT_DIR_MAX][2] = {
[IP_CT_DIR_ORIGINAL] = {
{
@@ -90,10 +94,8 @@ static struct ftp_search {
{
.pattern = "227 ",
.plen = sizeof("227 ") - 1,
- .skip = '(',
- .term = ')',
.ftptype = NF_CT_FTP_PASV,
- .getnum = try_rfc959,
+ .getnum = try_rfc1123,
},
{
.pattern = "229 ",
@@ -132,8 +134,9 @@ static int try_number(const char *data, size_t dlen, u_int32_t array[],
i++;
else {
/* Unexpected character; true if it's the
- terminator and we're finished. */
- if (*data == term && i == array_size - 1)
+ terminator (or we don't care about one)
+ and we're finished. */
+ if ((*data == term || !term) && i == array_size - 1)
return len;
pr_debug("Char %u (got %u nums) `%u' unexpected\n",
@@ -148,7 +151,8 @@ static int try_number(const char *data, size_t dlen, u_int32_t array[],
/* Returns 0, or length of numbers: 192,168,1,1,5,6 */
static int try_rfc959(const char *data, size_t dlen,
- struct nf_conntrack_man *cmd, char term)
+ struct nf_conntrack_man *cmd, char term,
+ unsigned int *offset)
{
int length;
u_int32_t array[6];
@@ -163,6 +167,33 @@ static int try_rfc959(const char *data, size_t dlen,
return length;
}
+/*
+ * From RFC 1123:
+ * The format of the 227 reply to a PASV command is not
+ * well standardized. In particular, an FTP client cannot
+ * assume that the parentheses shown on page 40 of RFC-959
+ * will be present (and in fact, Figure 3 on page 43 omits
+ * them). Therefore, a User-FTP program that interprets
+ * the PASV reply must scan the reply for the first digit
+ * of the host and port numbers.
+ */
+static int try_rfc1123(const char *data, size_t dlen,
+ struct nf_conntrack_man *cmd, char term,
+ unsigned int *offset)
+{
+ int i;
+ for (i = 0; i < dlen; i++)
+ if (isdigit(data[i]))
+ break;
+
+ if (i == dlen)
+ return 0;
+
+ *offset += i;
+
+ return try_rfc959(data + i, dlen - i, cmd, 0, offset);
+}
+
/* Grab port: number up to delimiter */
static int get_port(const char *data, int start, size_t dlen, char delim,
__be16 *port)
@@ -191,7 +222,7 @@ static int get_port(const char *data, int start, size_t dlen, char delim,
/* Returns 0, or length of numbers: |1|132.235.1.2|6275| or |2|3ffe::1|6275| */
static int try_eprt(const char *data, size_t dlen, struct nf_conntrack_man *cmd,
- char term)
+ char term, unsigned int *offset)
{
char delim;
int length;
@@ -239,7 +270,8 @@ static int try_eprt(const char *data, size_t dlen, struct nf_conntrack_man *cmd,
/* Returns 0, or length of numbers: |||6446| */
static int try_epsv_response(const char *data, size_t dlen,
- struct nf_conntrack_man *cmd, char term)
+ struct nf_conntrack_man *cmd, char term,
+ unsigned int *offset)
{
char delim;
@@ -261,9 +293,10 @@ static int find_pattern(const char *data, size_t dlen,
unsigned int *numlen,
struct nf_conntrack_man *cmd,
int (*getnum)(const char *, size_t,
- struct nf_conntrack_man *, char))
+ struct nf_conntrack_man *, char,
+ unsigned int *))
{
- size_t i;
+ size_t i = plen;
pr_debug("find_pattern `%s': dlen = %Zu\n", pattern, dlen);
if (dlen == 0)
@@ -293,16 +326,18 @@ static int find_pattern(const char *data, size_t dlen,
pr_debug("Pattern matches!\n");
/* Now we've found the constant string, try to skip
to the 'skip' character */
- for (i = plen; data[i] != skip; i++)
- if (i == dlen - 1) return -1;
+ if (skip) {
+ for (i = plen; data[i] != skip; i++)
+ if (i == dlen - 1) return -1;
- /* Skip over the last character */
- i++;
+ /* Skip over the last character */
+ i++;
+ }
pr_debug("Skipped up to `%c'!\n", skip);
*numoff = i;
- *numlen = getnum(data + i, dlen - i, cmd, term);
+ *numlen = getnum(data + i, dlen - i, cmd, term, numoff);
if (!*numlen)
return -1;
diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 3b18dd1..4b60a87 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -369,9 +369,7 @@ static int __net_init nf_log_net_init(struct net *net)
out_sysctl:
#ifdef CONFIG_PROC_FS
- /* For init_net: errors will trigger panic, don't unroll on error. */
- if (!net_eq(net, &init_net))
- remove_proc_entry("nf_log", net->nf.proc_netfilter);
+ remove_proc_entry("nf_log", net->nf.proc_netfilter);
#endif
return ret;
}
diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index 0f2ac8f..c011543 100644
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -41,6 +41,14 @@
#define NFQNL_QMAX_DEFAULT 1024
+/* We're using struct nlattr which has 16bit nla_len. Note that nla_len
+ * includes the header length. Thus, the maximum packet length that we
+ * support is 65531 bytes. We send truncated packets if the specified length
+ * is larger than that. Userspace can check for presence of NFQA_CAP_LEN
+ * attribute to detect truncation.
+ */
+#define NFQNL_MAX_COPY_RANGE (0xffff - NLA_HDRLEN)
+
struct nfqnl_instance {
struct hlist_node hlist; /* global list of queues */
struct rcu_head rcu;
@@ -122,7 +130,7 @@ instance_create(struct nfnl_queue_net *q, u_int16_t queue_num,
inst->queue_num = queue_num;
inst->peer_portid = portid;
inst->queue_maxlen = NFQNL_QMAX_DEFAULT;
- inst->copy_range = 0xffff;
+ inst->copy_range = NFQNL_MAX_COPY_RANGE;
inst->copy_mode = NFQNL_COPY_NONE;
spin_lock_init(&inst->lock);
INIT_LIST_HEAD(&inst->queue_list);
@@ -333,10 +341,9 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
return NULL;
data_len = ACCESS_ONCE(queue->copy_range);
- if (data_len == 0 || data_len > entskb->len)
+ if (data_len > entskb->len)
data_len = entskb->len;
-
if (!entskb->head_frag ||
skb_headlen(entskb) < L1_CACHE_BYTES ||
skb_shinfo(entskb)->nr_frags >= MAX_SKB_FRAGS)
@@ -465,7 +472,8 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
if (ct && nfqnl_ct_put(skb, ct, ctinfo) < 0)
goto nla_put_failure;
- if (cap_len > 0 && nla_put_be32(skb, NFQA_CAP_LEN, htonl(cap_len)))
+ if (cap_len > data_len &&
+ nla_put_be32(skb, NFQA_CAP_LEN, htonl(cap_len)))
goto nla_put_failure;
if (nfqnl_put_packet_info(skb, entskb))
@@ -509,10 +517,6 @@ __nfqnl_enqueue_packet(struct net *net, struct nfqnl_instance *queue,
}
spin_lock_bh(&queue->lock);
- if (!queue->peer_portid) {
- err = -EINVAL;
- goto err_out_free_nskb;
- }
if (queue->queue_total >= queue->queue_maxlen) {
if (queue->flags & NFQA_CFG_F_FAIL_OPEN) {
failopen = 1;
@@ -731,13 +735,8 @@ nfqnl_set_mode(struct nfqnl_instance *queue,
case NFQNL_COPY_PACKET:
queue->copy_mode = mode;
- /* We're using struct nlattr which has 16bit nla_len. Note that
- * nla_len includes the header length. Thus, the maximum packet
- * length that we support is 65531 bytes. We send truncated
- * packets if the specified length is larger than that.
- */
- if (range > 0xffff - NLA_HDRLEN)
- queue->copy_range = 0xffff - NLA_HDRLEN;
+ if (range == 0 || range > NFQNL_MAX_COPY_RANGE)
+ queue->copy_range = NFQNL_MAX_COPY_RANGE;
else
queue->copy_range = range;
break;
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index a60261c..da35ac0 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -26,6 +26,9 @@ static inline int xt_ct_target(struct sk_buff *skb, struct nf_conn *ct)
if (skb->nfct != NULL)
return XT_CONTINUE;
+ /* special case the untracked ct : we want the percpu object */
+ if (!ct)
+ ct = nf_ct_untracked_get();
atomic_inc(&ct->ct_general.use);
skb->nfct = &ct->ct_general;
skb->nfctinfo = IP_CT_NEW;
@@ -186,8 +189,7 @@ static int xt_ct_tg_check(const struct xt_tgchk_param *par,
int ret = -EOPNOTSUPP;
if (info->flags & XT_CT_NOTRACK) {
- ct = nf_ct_untracked_get();
- atomic_inc(&ct->ct_general.use);
+ ct = NULL;
goto out;
}
@@ -311,7 +313,7 @@ static void xt_ct_tg_destroy(const struct xt_tgdtor_param *par,
struct nf_conn *ct = info->ct;
struct nf_conn_help *help;
- if (!nf_ct_is_untracked(ct)) {
+ if (ct && !nf_ct_is_untracked(ct)) {
help = nfct_help(ct);
if (help)
module_put(help->helper->me);
@@ -319,8 +321,8 @@ static void xt_ct_tg_destroy(const struct xt_tgdtor_param *par,
nf_ct_l3proto_module_put(par->family);
xt_ct_destroy_timeout(ct);
+ nf_ct_put(info->ct);
}
- nf_ct_put(info->ct);
}
static void xt_ct_tg_destroy_v0(const struct xt_tgdtor_param *par)
diff --git a/net/netfilter/xt_socket.c b/net/netfilter/xt_socket.c
index 63b2bdb..0270424 100644
--- a/net/netfilter/xt_socket.c
+++ b/net/netfilter/xt_socket.c
@@ -107,7 +107,7 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
{
const struct iphdr *iph = ip_hdr(skb);
struct udphdr _hdr, *hp = NULL;
- struct sock *sk;
+ struct sock *sk = skb->sk;
__be32 uninitialized_var(daddr), uninitialized_var(saddr);
__be16 uninitialized_var(dport), uninitialized_var(sport);
u8 uninitialized_var(protocol);
@@ -155,9 +155,11 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
}
#endif
- sk = nf_tproxy_get_sock_v4(dev_net(skb->dev), protocol,
- saddr, daddr, sport, dport, par->in, NFT_LOOKUP_ANY);
- if (sk != NULL) {
+ if (!sk)
+ sk = nf_tproxy_get_sock_v4(dev_net(skb->dev), protocol,
+ saddr, daddr, sport, dport,
+ par->in, NFT_LOOKUP_ANY);
+ if (sk) {
bool wildcard;
bool transparent = true;
@@ -173,7 +175,8 @@ socket_match(const struct sk_buff *skb, struct xt_action_param *par,
(sk->sk_state == TCP_TIME_WAIT &&
inet_twsk(sk)->tw_transparent));
- xt_socket_put_sk(sk);
+ if (sk != skb->sk)
+ xt_socket_put_sk(sk);
if (wildcard || !transparent)
sk = NULL;
@@ -260,7 +263,7 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
{
struct ipv6hdr *iph = ipv6_hdr(skb);
struct udphdr _hdr, *hp = NULL;
- struct sock *sk;
+ struct sock *sk = skb->sk;
struct in6_addr *daddr = NULL, *saddr = NULL;
__be16 uninitialized_var(dport), uninitialized_var(sport);
int thoff = 0, uninitialized_var(tproto);
@@ -291,9 +294,11 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
return false;
}
- sk = nf_tproxy_get_sock_v6(dev_net(skb->dev), tproto,
- saddr, daddr, sport, dport, par->in, NFT_LOOKUP_ANY);
- if (sk != NULL) {
+ if (!sk)
+ sk = nf_tproxy_get_sock_v6(dev_net(skb->dev), tproto,
+ saddr, daddr, sport, dport,
+ par->in, NFT_LOOKUP_ANY);
+ if (sk) {
bool wildcard;
bool transparent = true;
@@ -309,7 +314,8 @@ socket_mt6_v1(const struct sk_buff *skb, struct xt_action_param *par)
(sk->sk_state == TCP_TIME_WAIT &&
inet_twsk(sk)->tw_transparent));
- xt_socket_put_sk(sk);
+ if (sk != skb->sk)
+ xt_socket_put_sk(sk);
if (wildcard || !transparent)
sk = NULL;
diff --git a/net/socket.c b/net/socket.c
index 9ff6366..1b93007 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2641,7 +2641,9 @@ static int __init sock_init(void)
*/
#ifdef CONFIG_NETFILTER
- netfilter_init();
+ err = netfilter_init();
+ if (err)
+ goto out;
#endif
#ifdef CONFIG_NETWORK_PHY_TIMESTAMPING
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