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-rw-r--r--net/ipv6/xfrm6_tunnel.c140
1 files changed, 10 insertions, 130 deletions
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index 6b44fe8..c8f9369 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -31,27 +31,6 @@
#include <linux/icmpv6.h>
#include <linux/mutex.h>
-#ifdef CONFIG_IPV6_XFRM6_TUNNEL_DEBUG
-# define X6TDEBUG 3
-#else
-# define X6TDEBUG 1
-#endif
-
-#define X6TPRINTK(fmt, args...) printk(fmt, ## args)
-#define X6TNOPRINTK(fmt, args...) do { ; } while(0)
-
-#if X6TDEBUG >= 1
-# define X6TPRINTK1 X6TPRINTK
-#else
-# define X6TPRINTK1 X6TNOPRINTK
-#endif
-
-#if X6TDEBUG >= 3
-# define X6TPRINTK3 X6TPRINTK
-#else
-# define X6TPRINTK3 X6TNOPRINTK
-#endif
-
/*
* xfrm_tunnel_spi things are for allocating unique id ("spi")
* per xfrm_address_t.
@@ -62,15 +41,8 @@ struct xfrm6_tunnel_spi {
xfrm_address_t addr;
u32 spi;
atomic_t refcnt;
-#ifdef XFRM6_TUNNEL_SPI_MAGIC
- u32 magic;
-#endif
};
-#ifdef CONFIG_IPV6_XFRM6_TUNNEL_DEBUG
-# define XFRM6_TUNNEL_SPI_MAGIC 0xdeadbeef
-#endif
-
static DEFINE_RWLOCK(xfrm6_tunnel_spi_lock);
static u32 xfrm6_tunnel_spi;
@@ -86,43 +58,15 @@ static kmem_cache_t *xfrm6_tunnel_spi_kmem __read_mostly;
static struct hlist_head xfrm6_tunnel_spi_byaddr[XFRM6_TUNNEL_SPI_BYADDR_HSIZE];
static struct hlist_head xfrm6_tunnel_spi_byspi[XFRM6_TUNNEL_SPI_BYSPI_HSIZE];
-#ifdef XFRM6_TUNNEL_SPI_MAGIC
-static int x6spi_check_magic(const struct xfrm6_tunnel_spi *x6spi,
- const char *name)
-{
- if (unlikely(x6spi->magic != XFRM6_TUNNEL_SPI_MAGIC)) {
- X6TPRINTK3(KERN_DEBUG "%s(): x6spi object "
- "at %p has corrupted magic %08x "
- "(should be %08x)\n",
- name, x6spi, x6spi->magic, XFRM6_TUNNEL_SPI_MAGIC);
- return -1;
- }
- return 0;
-}
-#else
-static int inline x6spi_check_magic(const struct xfrm6_tunnel_spi *x6spi,
- const char *name)
-{
- return 0;
-}
-#endif
-
-#define X6SPI_CHECK_MAGIC(x6spi) x6spi_check_magic((x6spi), __FUNCTION__)
-
-
static unsigned inline xfrm6_tunnel_spi_hash_byaddr(xfrm_address_t *addr)
{
unsigned h;
- X6TPRINTK3(KERN_DEBUG "%s(addr=%p)\n", __FUNCTION__, addr);
-
h = addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3];
h ^= h >> 16;
h ^= h >> 8;
h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1;
- X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, h);
-
return h;
}
@@ -136,19 +80,13 @@ static int xfrm6_tunnel_spi_init(void)
{
int i;
- X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
-
xfrm6_tunnel_spi = 0;
xfrm6_tunnel_spi_kmem = kmem_cache_create("xfrm6_tunnel_spi",
sizeof(struct xfrm6_tunnel_spi),
0, SLAB_HWCACHE_ALIGN,
NULL, NULL);
- if (!xfrm6_tunnel_spi_kmem) {
- X6TPRINTK1(KERN_ERR
- "%s(): failed to allocate xfrm6_tunnel_spi_kmem\n",
- __FUNCTION__);
+ if (!xfrm6_tunnel_spi_kmem)
return -ENOMEM;
- }
for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++)
INIT_HLIST_HEAD(&xfrm6_tunnel_spi_byaddr[i]);
@@ -161,22 +99,16 @@ static void xfrm6_tunnel_spi_fini(void)
{
int i;
- X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
-
for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) {
if (!hlist_empty(&xfrm6_tunnel_spi_byaddr[i]))
- goto err;
+ return;
}
for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) {
if (!hlist_empty(&xfrm6_tunnel_spi_byspi[i]))
- goto err;
+ return;
}
kmem_cache_destroy(xfrm6_tunnel_spi_kmem);
xfrm6_tunnel_spi_kmem = NULL;
- return;
-err:
- X6TPRINTK1(KERN_ERR "%s(): table is not empty\n", __FUNCTION__);
- return;
}
static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
@@ -184,19 +116,13 @@ static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
struct xfrm6_tunnel_spi *x6spi;
struct hlist_node *pos;
- X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
-
hlist_for_each_entry(x6spi, pos,
&xfrm6_tunnel_spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)],
list_byaddr) {
- if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) {
- X6SPI_CHECK_MAGIC(x6spi);
- X6TPRINTK3(KERN_DEBUG "%s() = %p(%u)\n", __FUNCTION__, x6spi, x6spi->spi);
+ if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0)
return x6spi;
- }
}
- X6TPRINTK3(KERN_DEBUG "%s() = NULL(0)\n", __FUNCTION__);
return NULL;
}
@@ -205,8 +131,6 @@ u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
struct xfrm6_tunnel_spi *x6spi;
u32 spi;
- X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
-
read_lock_bh(&xfrm6_tunnel_spi_lock);
x6spi = __xfrm6_tunnel_spi_lookup(saddr);
spi = x6spi ? x6spi->spi : 0;
@@ -223,8 +147,6 @@ static u32 __xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
struct hlist_node *pos;
unsigned index;
- X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
-
if (xfrm6_tunnel_spi < XFRM6_TUNNEL_SPI_MIN ||
xfrm6_tunnel_spi >= XFRM6_TUNNEL_SPI_MAX)
xfrm6_tunnel_spi = XFRM6_TUNNEL_SPI_MIN;
@@ -258,18 +180,10 @@ try_next_2:;
spi = 0;
goto out;
alloc_spi:
- X6TPRINTK3(KERN_DEBUG "%s(): allocate new spi for " NIP6_FMT "\n",
- __FUNCTION__,
- NIP6(*(struct in6_addr *)saddr));
x6spi = kmem_cache_alloc(xfrm6_tunnel_spi_kmem, SLAB_ATOMIC);
- if (!x6spi) {
- X6TPRINTK1(KERN_ERR "%s(): kmem_cache_alloc() failed\n",
- __FUNCTION__);
+ if (!x6spi)
goto out;
- }
-#ifdef XFRM6_TUNNEL_SPI_MAGIC
- x6spi->magic = XFRM6_TUNNEL_SPI_MAGIC;
-#endif
+
memcpy(&x6spi->addr, saddr, sizeof(x6spi->addr));
x6spi->spi = spi;
atomic_set(&x6spi->refcnt, 1);
@@ -278,9 +192,7 @@ alloc_spi:
index = xfrm6_tunnel_spi_hash_byaddr(saddr);
hlist_add_head(&x6spi->list_byaddr, &xfrm6_tunnel_spi_byaddr[index]);
- X6SPI_CHECK_MAGIC(x6spi);
out:
- X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, spi);
return spi;
}
@@ -289,8 +201,6 @@ u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
struct xfrm6_tunnel_spi *x6spi;
u32 spi;
- X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
-
write_lock_bh(&xfrm6_tunnel_spi_lock);
x6spi = __xfrm6_tunnel_spi_lookup(saddr);
if (x6spi) {
@@ -300,8 +210,6 @@ u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
spi = __xfrm6_tunnel_alloc_spi(saddr);
write_unlock_bh(&xfrm6_tunnel_spi_lock);
- X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, spi);
-
return spi;
}
@@ -312,8 +220,6 @@ void xfrm6_tunnel_free_spi(xfrm_address_t *saddr)
struct xfrm6_tunnel_spi *x6spi;
struct hlist_node *pos, *n;
- X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
-
write_lock_bh(&xfrm6_tunnel_spi_lock);
hlist_for_each_entry_safe(x6spi, pos, n,
@@ -321,12 +227,6 @@ void xfrm6_tunnel_free_spi(xfrm_address_t *saddr)
list_byaddr)
{
if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) {
- X6TPRINTK3(KERN_DEBUG "%s(): x6spi object for " NIP6_FMT
- " found at %p\n",
- __FUNCTION__,
- NIP6(*(struct in6_addr *)saddr),
- x6spi);
- X6SPI_CHECK_MAGIC(x6spi);
if (atomic_dec_and_test(&x6spi->refcnt)) {
hlist_del(&x6spi->list_byaddr);
hlist_del(&x6spi->list_byspi);
@@ -377,20 +277,14 @@ static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
case ICMPV6_ADDR_UNREACH:
case ICMPV6_PORT_UNREACH:
default:
- X6TPRINTK3(KERN_DEBUG
- "xfrm6_tunnel: Destination Unreach.\n");
break;
}
break;
case ICMPV6_PKT_TOOBIG:
- X6TPRINTK3(KERN_DEBUG
- "xfrm6_tunnel: Packet Too Big.\n");
break;
case ICMPV6_TIME_EXCEED:
switch (code) {
case ICMPV6_EXC_HOPLIMIT:
- X6TPRINTK3(KERN_DEBUG
- "xfrm6_tunnel: Too small Hoplimit.\n");
break;
case ICMPV6_EXC_FRAGTIME:
default:
@@ -447,22 +341,14 @@ static struct xfrm6_tunnel xfrm6_tunnel_handler = {
static int __init xfrm6_tunnel_init(void)
{
- X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
-
- if (xfrm_register_type(&xfrm6_tunnel_type, AF_INET6) < 0) {
- X6TPRINTK1(KERN_ERR
- "xfrm6_tunnel init: can't add xfrm type\n");
+ if (xfrm_register_type(&xfrm6_tunnel_type, AF_INET6) < 0)
return -EAGAIN;
- }
+
if (xfrm6_tunnel_register(&xfrm6_tunnel_handler)) {
- X6TPRINTK1(KERN_ERR
- "xfrm6_tunnel init(): can't add handler\n");
xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
return -EAGAIN;
}
if (xfrm6_tunnel_spi_init() < 0) {
- X6TPRINTK1(KERN_ERR
- "xfrm6_tunnel init: failed to initialize spi\n");
xfrm6_tunnel_deregister(&xfrm6_tunnel_handler);
xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
return -EAGAIN;
@@ -472,15 +358,9 @@ static int __init xfrm6_tunnel_init(void)
static void __exit xfrm6_tunnel_fini(void)
{
- X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
-
xfrm6_tunnel_spi_fini();
- if (xfrm6_tunnel_deregister(&xfrm6_tunnel_handler))
- X6TPRINTK1(KERN_ERR
- "xfrm6_tunnel close: can't remove handler\n");
- if (xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6) < 0)
- X6TPRINTK1(KERN_ERR
- "xfrm6_tunnel close: can't remove xfrm type\n");
+ xfrm6_tunnel_deregister(&xfrm6_tunnel_handler);
+ xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
}
module_init(xfrm6_tunnel_init);
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