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authorDavid S. Miller <davem@sunset.davemloft.net>2006-07-24 16:49:06 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-07-24 16:49:06 -0400
commita922ba5510530ae8e3c60edc85c56f72347a3c86 (patch)
tree3dda699fda58341fb11a0ac07e424ec57985de87 /net/ipv6/xfrm6_tunnel.c
parente9e9290f5c85887baf1123a36ec9fdf56a10cf4b (diff)
[IPV6] xfrm6_tunnel: Delete debugging code.
It doesn't compile, and it's dubious in several regards: 1) is enabled by non-Kconfig controlled CONFIG_* value (noted by Randy Dunlap) 2) XFRM6_TUNNEL_SPI_MAGIC is defined after it's first use 3) the debugging messages print object pointer addresses which have no meaning without context So let's just get rid of it. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/xfrm6_tunnel.c')
-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 6b44fe8516c3..c8f9369c2a87 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -31,27 +31,6 @@
31#include <linux/icmpv6.h> 31#include <linux/icmpv6.h>
32#include <linux/mutex.h> 32#include <linux/mutex.h>
33 33
34#ifdef CONFIG_IPV6_XFRM6_TUNNEL_DEBUG
35# define X6TDEBUG 3
36#else
37# define X6TDEBUG 1
38#endif
39
40#define X6TPRINTK(fmt, args...) printk(fmt, ## args)
41#define X6TNOPRINTK(fmt, args...) do { ; } while(0)
42
43#if X6TDEBUG >= 1
44# define X6TPRINTK1 X6TPRINTK
45#else
46# define X6TPRINTK1 X6TNOPRINTK
47#endif
48
49#if X6TDEBUG >= 3
50# define X6TPRINTK3 X6TPRINTK
51#else
52# define X6TPRINTK3 X6TNOPRINTK
53#endif
54
55/* 34/*
56 * xfrm_tunnel_spi things are for allocating unique id ("spi") 35 * xfrm_tunnel_spi things are for allocating unique id ("spi")
57 * per xfrm_address_t. 36 * per xfrm_address_t.
@@ -62,15 +41,8 @@ struct xfrm6_tunnel_spi {
62 xfrm_address_t addr; 41 xfrm_address_t addr;
63 u32 spi; 42 u32 spi;
64 atomic_t refcnt; 43 atomic_t refcnt;
65#ifdef XFRM6_TUNNEL_SPI_MAGIC
66 u32 magic;
67#endif
68}; 44};
69 45
70#ifdef CONFIG_IPV6_XFRM6_TUNNEL_DEBUG
71# define XFRM6_TUNNEL_SPI_MAGIC 0xdeadbeef
72#endif
73
74static DEFINE_RWLOCK(xfrm6_tunnel_spi_lock); 46static DEFINE_RWLOCK(xfrm6_tunnel_spi_lock);
75 47
76static u32 xfrm6_tunnel_spi; 48static u32 xfrm6_tunnel_spi;
@@ -86,43 +58,15 @@ static kmem_cache_t *xfrm6_tunnel_spi_kmem __read_mostly;
86static struct hlist_head xfrm6_tunnel_spi_byaddr[XFRM6_TUNNEL_SPI_BYADDR_HSIZE]; 58static struct hlist_head xfrm6_tunnel_spi_byaddr[XFRM6_TUNNEL_SPI_BYADDR_HSIZE];
87static struct hlist_head xfrm6_tunnel_spi_byspi[XFRM6_TUNNEL_SPI_BYSPI_HSIZE]; 59static struct hlist_head xfrm6_tunnel_spi_byspi[XFRM6_TUNNEL_SPI_BYSPI_HSIZE];
88 60
89#ifdef XFRM6_TUNNEL_SPI_MAGIC
90static int x6spi_check_magic(const struct xfrm6_tunnel_spi *x6spi,
91 const char *name)
92{
93 if (unlikely(x6spi->magic != XFRM6_TUNNEL_SPI_MAGIC)) {
94 X6TPRINTK3(KERN_DEBUG "%s(): x6spi object "
95 "at %p has corrupted magic %08x "
96 "(should be %08x)\n",
97 name, x6spi, x6spi->magic, XFRM6_TUNNEL_SPI_MAGIC);
98 return -1;
99 }
100 return 0;
101}
102#else
103static int inline x6spi_check_magic(const struct xfrm6_tunnel_spi *x6spi,
104 const char *name)
105{
106 return 0;
107}
108#endif
109
110#define X6SPI_CHECK_MAGIC(x6spi) x6spi_check_magic((x6spi), __FUNCTION__)
111
112
113static unsigned inline xfrm6_tunnel_spi_hash_byaddr(xfrm_address_t *addr) 61static unsigned inline xfrm6_tunnel_spi_hash_byaddr(xfrm_address_t *addr)
114{ 62{
115 unsigned h; 63 unsigned h;
116 64
117 X6TPRINTK3(KERN_DEBUG "%s(addr=%p)\n", __FUNCTION__, addr);
118
119 h = addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3]; 65 h = addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3];
120 h ^= h >> 16; 66 h ^= h >> 16;
121 h ^= h >> 8; 67 h ^= h >> 8;
122 h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1; 68 h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1;
123 69
124 X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, h);
125
126 return h; 70 return h;
127} 71}
128 72
@@ -136,19 +80,13 @@ static int xfrm6_tunnel_spi_init(void)
136{ 80{
137 int i; 81 int i;
138 82
139 X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
140
141 xfrm6_tunnel_spi = 0; 83 xfrm6_tunnel_spi = 0;
142 xfrm6_tunnel_spi_kmem = kmem_cache_create("xfrm6_tunnel_spi", 84 xfrm6_tunnel_spi_kmem = kmem_cache_create("xfrm6_tunnel_spi",
143 sizeof(struct xfrm6_tunnel_spi), 85 sizeof(struct xfrm6_tunnel_spi),
144 0, SLAB_HWCACHE_ALIGN, 86 0, SLAB_HWCACHE_ALIGN,
145 NULL, NULL); 87 NULL, NULL);
146 if (!xfrm6_tunnel_spi_kmem) { 88 if (!xfrm6_tunnel_spi_kmem)
147 X6TPRINTK1(KERN_ERR
148 "%s(): failed to allocate xfrm6_tunnel_spi_kmem\n",
149 __FUNCTION__);
150 return -ENOMEM; 89 return -ENOMEM;
151 }
152 90
153 for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) 91 for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++)
154 INIT_HLIST_HEAD(&xfrm6_tunnel_spi_byaddr[i]); 92 INIT_HLIST_HEAD(&xfrm6_tunnel_spi_byaddr[i]);
@@ -161,22 +99,16 @@ static void xfrm6_tunnel_spi_fini(void)
161{ 99{
162 int i; 100 int i;
163 101
164 X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
165
166 for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) { 102 for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) {
167 if (!hlist_empty(&xfrm6_tunnel_spi_byaddr[i])) 103 if (!hlist_empty(&xfrm6_tunnel_spi_byaddr[i]))
168 goto err; 104 return;
169 } 105 }
170 for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) { 106 for (i = 0; i < XFRM6_TUNNEL_SPI_BYSPI_HSIZE; i++) {
171 if (!hlist_empty(&xfrm6_tunnel_spi_byspi[i])) 107 if (!hlist_empty(&xfrm6_tunnel_spi_byspi[i]))
172 goto err; 108 return;
173 } 109 }
174 kmem_cache_destroy(xfrm6_tunnel_spi_kmem); 110 kmem_cache_destroy(xfrm6_tunnel_spi_kmem);
175 xfrm6_tunnel_spi_kmem = NULL; 111 xfrm6_tunnel_spi_kmem = NULL;
176 return;
177err:
178 X6TPRINTK1(KERN_ERR "%s(): table is not empty\n", __FUNCTION__);
179 return;
180} 112}
181 113
182static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr) 114static 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)
184 struct xfrm6_tunnel_spi *x6spi; 116 struct xfrm6_tunnel_spi *x6spi;
185 struct hlist_node *pos; 117 struct hlist_node *pos;
186 118
187 X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
188
189 hlist_for_each_entry(x6spi, pos, 119 hlist_for_each_entry(x6spi, pos,
190 &xfrm6_tunnel_spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)], 120 &xfrm6_tunnel_spi_byaddr[xfrm6_tunnel_spi_hash_byaddr(saddr)],
191 list_byaddr) { 121 list_byaddr) {
192 if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) { 122 if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0)
193 X6SPI_CHECK_MAGIC(x6spi);
194 X6TPRINTK3(KERN_DEBUG "%s() = %p(%u)\n", __FUNCTION__, x6spi, x6spi->spi);
195 return x6spi; 123 return x6spi;
196 }
197 } 124 }
198 125
199 X6TPRINTK3(KERN_DEBUG "%s() = NULL(0)\n", __FUNCTION__);
200 return NULL; 126 return NULL;
201} 127}
202 128
@@ -205,8 +131,6 @@ u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
205 struct xfrm6_tunnel_spi *x6spi; 131 struct xfrm6_tunnel_spi *x6spi;
206 u32 spi; 132 u32 spi;
207 133
208 X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
209
210 read_lock_bh(&xfrm6_tunnel_spi_lock); 134 read_lock_bh(&xfrm6_tunnel_spi_lock);
211 x6spi = __xfrm6_tunnel_spi_lookup(saddr); 135 x6spi = __xfrm6_tunnel_spi_lookup(saddr);
212 spi = x6spi ? x6spi->spi : 0; 136 spi = x6spi ? x6spi->spi : 0;
@@ -223,8 +147,6 @@ static u32 __xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
223 struct hlist_node *pos; 147 struct hlist_node *pos;
224 unsigned index; 148 unsigned index;
225 149
226 X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
227
228 if (xfrm6_tunnel_spi < XFRM6_TUNNEL_SPI_MIN || 150 if (xfrm6_tunnel_spi < XFRM6_TUNNEL_SPI_MIN ||
229 xfrm6_tunnel_spi >= XFRM6_TUNNEL_SPI_MAX) 151 xfrm6_tunnel_spi >= XFRM6_TUNNEL_SPI_MAX)
230 xfrm6_tunnel_spi = XFRM6_TUNNEL_SPI_MIN; 152 xfrm6_tunnel_spi = XFRM6_TUNNEL_SPI_MIN;
@@ -258,18 +180,10 @@ try_next_2:;
258 spi = 0; 180 spi = 0;
259 goto out; 181 goto out;
260alloc_spi: 182alloc_spi:
261 X6TPRINTK3(KERN_DEBUG "%s(): allocate new spi for " NIP6_FMT "\n",
262 __FUNCTION__,
263 NIP6(*(struct in6_addr *)saddr));
264 x6spi = kmem_cache_alloc(xfrm6_tunnel_spi_kmem, SLAB_ATOMIC); 183 x6spi = kmem_cache_alloc(xfrm6_tunnel_spi_kmem, SLAB_ATOMIC);
265 if (!x6spi) { 184 if (!x6spi)
266 X6TPRINTK1(KERN_ERR "%s(): kmem_cache_alloc() failed\n",
267 __FUNCTION__);
268 goto out; 185 goto out;
269 } 186
270#ifdef XFRM6_TUNNEL_SPI_MAGIC
271 x6spi->magic = XFRM6_TUNNEL_SPI_MAGIC;
272#endif
273 memcpy(&x6spi->addr, saddr, sizeof(x6spi->addr)); 187 memcpy(&x6spi->addr, saddr, sizeof(x6spi->addr));
274 x6spi->spi = spi; 188 x6spi->spi = spi;
275 atomic_set(&x6spi->refcnt, 1); 189 atomic_set(&x6spi->refcnt, 1);
@@ -278,9 +192,7 @@ alloc_spi:
278 192
279 index = xfrm6_tunnel_spi_hash_byaddr(saddr); 193 index = xfrm6_tunnel_spi_hash_byaddr(saddr);
280 hlist_add_head(&x6spi->list_byaddr, &xfrm6_tunnel_spi_byaddr[index]); 194 hlist_add_head(&x6spi->list_byaddr, &xfrm6_tunnel_spi_byaddr[index]);
281 X6SPI_CHECK_MAGIC(x6spi);
282out: 195out:
283 X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, spi);
284 return spi; 196 return spi;
285} 197}
286 198
@@ -289,8 +201,6 @@ u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
289 struct xfrm6_tunnel_spi *x6spi; 201 struct xfrm6_tunnel_spi *x6spi;
290 u32 spi; 202 u32 spi;
291 203
292 X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
293
294 write_lock_bh(&xfrm6_tunnel_spi_lock); 204 write_lock_bh(&xfrm6_tunnel_spi_lock);
295 x6spi = __xfrm6_tunnel_spi_lookup(saddr); 205 x6spi = __xfrm6_tunnel_spi_lookup(saddr);
296 if (x6spi) { 206 if (x6spi) {
@@ -300,8 +210,6 @@ u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
300 spi = __xfrm6_tunnel_alloc_spi(saddr); 210 spi = __xfrm6_tunnel_alloc_spi(saddr);
301 write_unlock_bh(&xfrm6_tunnel_spi_lock); 211 write_unlock_bh(&xfrm6_tunnel_spi_lock);
302 212
303 X6TPRINTK3(KERN_DEBUG "%s() = %u\n", __FUNCTION__, spi);
304
305 return spi; 213 return spi;
306} 214}
307 215
@@ -312,8 +220,6 @@ void xfrm6_tunnel_free_spi(xfrm_address_t *saddr)
312 struct xfrm6_tunnel_spi *x6spi; 220 struct xfrm6_tunnel_spi *x6spi;
313 struct hlist_node *pos, *n; 221 struct hlist_node *pos, *n;
314 222
315 X6TPRINTK3(KERN_DEBUG "%s(saddr=%p)\n", __FUNCTION__, saddr);
316
317 write_lock_bh(&xfrm6_tunnel_spi_lock); 223 write_lock_bh(&xfrm6_tunnel_spi_lock);
318 224
319 hlist_for_each_entry_safe(x6spi, pos, n, 225 hlist_for_each_entry_safe(x6spi, pos, n,
@@ -321,12 +227,6 @@ void xfrm6_tunnel_free_spi(xfrm_address_t *saddr)
321 list_byaddr) 227 list_byaddr)
322 { 228 {
323 if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) { 229 if (memcmp(&x6spi->addr, saddr, sizeof(x6spi->addr)) == 0) {
324 X6TPRINTK3(KERN_DEBUG "%s(): x6spi object for " NIP6_FMT
325 " found at %p\n",
326 __FUNCTION__,
327 NIP6(*(struct in6_addr *)saddr),
328 x6spi);
329 X6SPI_CHECK_MAGIC(x6spi);
330 if (atomic_dec_and_test(&x6spi->refcnt)) { 230 if (atomic_dec_and_test(&x6spi->refcnt)) {
331 hlist_del(&x6spi->list_byaddr); 231 hlist_del(&x6spi->list_byaddr);
332 hlist_del(&x6spi->list_byspi); 232 hlist_del(&x6spi->list_byspi);
@@ -377,20 +277,14 @@ static int xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
377 case ICMPV6_ADDR_UNREACH: 277 case ICMPV6_ADDR_UNREACH:
378 case ICMPV6_PORT_UNREACH: 278 case ICMPV6_PORT_UNREACH:
379 default: 279 default:
380 X6TPRINTK3(KERN_DEBUG
381 "xfrm6_tunnel: Destination Unreach.\n");
382 break; 280 break;
383 } 281 }
384 break; 282 break;
385 case ICMPV6_PKT_TOOBIG: 283 case ICMPV6_PKT_TOOBIG:
386 X6TPRINTK3(KERN_DEBUG
387 "xfrm6_tunnel: Packet Too Big.\n");
388 break; 284 break;
389 case ICMPV6_TIME_EXCEED: 285 case ICMPV6_TIME_EXCEED:
390 switch (code) { 286 switch (code) {
391 case ICMPV6_EXC_HOPLIMIT: 287 case ICMPV6_EXC_HOPLIMIT:
392 X6TPRINTK3(KERN_DEBUG
393 "xfrm6_tunnel: Too small Hoplimit.\n");
394 break; 288 break;
395 case ICMPV6_EXC_FRAGTIME: 289 case ICMPV6_EXC_FRAGTIME:
396 default: 290 default:
@@ -447,22 +341,14 @@ static struct xfrm6_tunnel xfrm6_tunnel_handler = {
447 341
448static int __init xfrm6_tunnel_init(void) 342static int __init xfrm6_tunnel_init(void)
449{ 343{
450 X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__); 344 if (xfrm_register_type(&xfrm6_tunnel_type, AF_INET6) < 0)
451
452 if (xfrm_register_type(&xfrm6_tunnel_type, AF_INET6) < 0) {
453 X6TPRINTK1(KERN_ERR
454 "xfrm6_tunnel init: can't add xfrm type\n");
455 return -EAGAIN; 345 return -EAGAIN;
456 } 346
457 if (xfrm6_tunnel_register(&xfrm6_tunnel_handler)) { 347 if (xfrm6_tunnel_register(&xfrm6_tunnel_handler)) {
458 X6TPRINTK1(KERN_ERR
459 "xfrm6_tunnel init(): can't add handler\n");
460 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6); 348 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
461 return -EAGAIN; 349 return -EAGAIN;
462 } 350 }
463 if (xfrm6_tunnel_spi_init() < 0) { 351 if (xfrm6_tunnel_spi_init() < 0) {
464 X6TPRINTK1(KERN_ERR
465 "xfrm6_tunnel init: failed to initialize spi\n");
466 xfrm6_tunnel_deregister(&xfrm6_tunnel_handler); 352 xfrm6_tunnel_deregister(&xfrm6_tunnel_handler);
467 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6); 353 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
468 return -EAGAIN; 354 return -EAGAIN;
@@ -472,15 +358,9 @@ static int __init xfrm6_tunnel_init(void)
472 358
473static void __exit xfrm6_tunnel_fini(void) 359static void __exit xfrm6_tunnel_fini(void)
474{ 360{
475 X6TPRINTK3(KERN_DEBUG "%s()\n", __FUNCTION__);
476
477 xfrm6_tunnel_spi_fini(); 361 xfrm6_tunnel_spi_fini();
478 if (xfrm6_tunnel_deregister(&xfrm6_tunnel_handler)) 362 xfrm6_tunnel_deregister(&xfrm6_tunnel_handler);
479 X6TPRINTK1(KERN_ERR 363 xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6);
480 "xfrm6_tunnel close: can't remove handler\n");
481 if (xfrm_unregister_type(&xfrm6_tunnel_type, AF_INET6) < 0)
482 X6TPRINTK1(KERN_ERR
483 "xfrm6_tunnel close: can't remove xfrm type\n");
484} 364}
485 365
486module_init(xfrm6_tunnel_init); 366module_init(xfrm6_tunnel_init);