-/*
+/*
* xfrm algorithm interface
*
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
+ * Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pfkeyv2.h>
#include <linux/crypto.h>
+#include <linux/scatterlist.h>
#include <net/xfrm.h>
#if defined(CONFIG_INET_AH) || defined(CONFIG_INET_AH_MODULE) || defined(CONFIG_INET6_AH) || defined(CONFIG_INET6_AH_MODULE)
#include <net/ah.h>
#if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE)
#include <net/esp.h>
#endif
-#include <asm/scatterlist.h>
/*
* Algorithms supported by IPsec. These entries contain properties which
* that instantiated crypto transforms have correct parameters for IPsec
* purposes.
*/
+static struct xfrm_algo_desc aead_list[] = {
+{
+ .name = "rfc4106(gcm(aes))",
+
+ .uinfo = {
+ .aead = {
+ .icv_truncbits = 64,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV8,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "rfc4106(gcm(aes))",
+
+ .uinfo = {
+ .aead = {
+ .icv_truncbits = 96,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV12,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "rfc4106(gcm(aes))",
+
+ .uinfo = {
+ .aead = {
+ .icv_truncbits = 128,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV16,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "rfc4309(ccm(aes))",
+
+ .uinfo = {
+ .aead = {
+ .icv_truncbits = 64,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV8,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "rfc4309(ccm(aes))",
+
+ .uinfo = {
+ .aead = {
+ .icv_truncbits = 96,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV12,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "rfc4309(ccm(aes))",
+
+ .uinfo = {
+ .aead = {
+ .icv_truncbits = 128,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV16,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+};
+
static struct xfrm_algo_desc aalg_list[] = {
{
.name = "digest_null",
-
+
.uinfo = {
.auth = {
.icv_truncbits = 0,
.icv_fullbits = 0,
}
},
-
+
.desc = {
.sadb_alg_id = SADB_X_AALG_NULL,
.sadb_alg_ivlen = 0,
}
},
{
- .name = "md5",
+ .name = "hmac(md5)",
+ .compat = "md5",
.uinfo = {
.auth = {
.icv_fullbits = 128,
}
},
-
+
.desc = {
.sadb_alg_id = SADB_AALG_MD5HMAC,
.sadb_alg_ivlen = 0,
}
},
{
- .name = "sha1",
+ .name = "hmac(sha1)",
+ .compat = "sha1",
.uinfo = {
.auth = {
}
},
{
- .name = "sha256",
+ .name = "hmac(sha256)",
+ .compat = "sha256",
.uinfo = {
.auth = {
}
},
{
- .name = "ripemd160",
+ .name = "hmac(rmd160)",
+ .compat = "rmd160",
.uinfo = {
.auth = {
.sadb_alg_maxbits = 160
}
},
+{
+ .name = "xcbc(aes)",
+
+ .uinfo = {
+ .auth = {
+ .icv_truncbits = 96,
+ .icv_fullbits = 128,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_AALG_AES_XCBC_MAC,
+ .sadb_alg_ivlen = 0,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 128
+ }
+},
};
static struct xfrm_algo_desc ealg_list[] = {
{
- .name = "cipher_null",
-
+ .name = "ecb(cipher_null)",
+ .compat = "cipher_null",
+
.uinfo = {
.encr = {
.blockbits = 8,
.defkeybits = 0,
}
},
-
+
.desc = {
.sadb_alg_id = SADB_EALG_NULL,
.sadb_alg_ivlen = 0,
}
},
{
- .name = "des",
+ .name = "cbc(des)",
+ .compat = "des",
.uinfo = {
.encr = {
}
},
{
- .name = "des3_ede",
+ .name = "cbc(des3_ede)",
+ .compat = "des3_ede",
.uinfo = {
.encr = {
}
},
{
- .name = "cast128",
+ .name = "cbc(cast128)",
+ .compat = "cast128",
.uinfo = {
.encr = {
}
},
{
- .name = "blowfish",
+ .name = "cbc(blowfish)",
+ .compat = "blowfish",
.uinfo = {
.encr = {
}
},
{
- .name = "aes",
+ .name = "cbc(aes)",
+ .compat = "aes",
.uinfo = {
.encr = {
}
},
{
- .name = "serpent",
-
- .uinfo = {
- .encr = {
- .blockbits = 128,
- .defkeybits = 128,
- }
- },
-
- .desc = {
- .sadb_alg_id = SADB_X_EALG_SERPENTCBC,
- .sadb_alg_ivlen = 8,
- .sadb_alg_minbits = 128,
- .sadb_alg_maxbits = 256,
- }
+ .name = "cbc(serpent)",
+ .compat = "serpent",
+
+ .uinfo = {
+ .encr = {
+ .blockbits = 128,
+ .defkeybits = 128,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_SERPENTCBC,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256,
+ }
},
{
- .name = "twofish",
-
- .uinfo = {
- .encr = {
- .blockbits = 128,
- .defkeybits = 128,
- }
- },
-
- .desc = {
- .sadb_alg_id = SADB_X_EALG_TWOFISHCBC,
- .sadb_alg_ivlen = 8,
- .sadb_alg_minbits = 128,
- .sadb_alg_maxbits = 256
- }
+ .name = "cbc(camellia)",
+
+ .uinfo = {
+ .encr = {
+ .blockbits = 128,
+ .defkeybits = 128,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_CAMELLIACBC,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "cbc(twofish)",
+ .compat = "twofish",
+
+ .uinfo = {
+ .encr = {
+ .blockbits = 128,
+ .defkeybits = 128,
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_TWOFISHCBC,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
+},
+{
+ .name = "rfc3686(ctr(aes))",
+
+ .uinfo = {
+ .encr = {
+ .blockbits = 128,
+ .defkeybits = 160, /* 128-bit key + 32-bit nonce */
+ }
+ },
+
+ .desc = {
+ .sadb_alg_id = SADB_X_EALG_AESCTR,
+ .sadb_alg_ivlen = 8,
+ .sadb_alg_minbits = 128,
+ .sadb_alg_maxbits = 256
+ }
},
};
},
};
+static inline int aead_entries(void)
+{
+ return ARRAY_SIZE(aead_list);
+}
+
static inline int aalg_entries(void)
{
return ARRAY_SIZE(aalg_list);
return ARRAY_SIZE(calg_list);
}
-/* Todo: generic iterators */
-struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id)
-{
- int i;
-
- for (i = 0; i < aalg_entries(); i++) {
- if (aalg_list[i].desc.sadb_alg_id == alg_id) {
- if (aalg_list[i].available)
- return &aalg_list[i];
- else
- break;
- }
- }
- return NULL;
-}
-EXPORT_SYMBOL_GPL(xfrm_aalg_get_byid);
+struct xfrm_algo_list {
+ struct xfrm_algo_desc *algs;
+ int entries;
+ u32 type;
+ u32 mask;
+};
-struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)
-{
- int i;
+static const struct xfrm_algo_list xfrm_aead_list = {
+ .algs = aead_list,
+ .entries = ARRAY_SIZE(aead_list),
+ .type = CRYPTO_ALG_TYPE_AEAD,
+ .mask = CRYPTO_ALG_TYPE_MASK,
+};
- for (i = 0; i < ealg_entries(); i++) {
- if (ealg_list[i].desc.sadb_alg_id == alg_id) {
- if (ealg_list[i].available)
- return &ealg_list[i];
- else
- break;
- }
- }
- return NULL;
-}
-EXPORT_SYMBOL_GPL(xfrm_ealg_get_byid);
+static const struct xfrm_algo_list xfrm_aalg_list = {
+ .algs = aalg_list,
+ .entries = ARRAY_SIZE(aalg_list),
+ .type = CRYPTO_ALG_TYPE_HASH,
+ .mask = CRYPTO_ALG_TYPE_HASH_MASK,
+};
-struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id)
-{
- int i;
+static const struct xfrm_algo_list xfrm_ealg_list = {
+ .algs = ealg_list,
+ .entries = ARRAY_SIZE(ealg_list),
+ .type = CRYPTO_ALG_TYPE_BLKCIPHER,
+ .mask = CRYPTO_ALG_TYPE_BLKCIPHER_MASK,
+};
- for (i = 0; i < calg_entries(); i++) {
- if (calg_list[i].desc.sadb_alg_id == alg_id) {
- if (calg_list[i].available)
- return &calg_list[i];
- else
- break;
- }
- }
- return NULL;
-}
-EXPORT_SYMBOL_GPL(xfrm_calg_get_byid);
+static const struct xfrm_algo_list xfrm_calg_list = {
+ .algs = calg_list,
+ .entries = ARRAY_SIZE(calg_list),
+ .type = CRYPTO_ALG_TYPE_COMPRESS,
+ .mask = CRYPTO_ALG_TYPE_MASK,
+};
-static struct xfrm_algo_desc *xfrm_get_byname(struct xfrm_algo_desc *list,
- int entries, char *name,
- int probe)
+static struct xfrm_algo_desc *xfrm_find_algo(
+ const struct xfrm_algo_list *algo_list,
+ int match(const struct xfrm_algo_desc *entry, const void *data),
+ const void *data, int probe)
{
+ struct xfrm_algo_desc *list = algo_list->algs;
int i, status;
- if (!name)
- return NULL;
-
- for (i = 0; i < entries; i++) {
- if (strcmp(name, list[i].name))
+ for (i = 0; i < algo_list->entries; i++) {
+ if (!match(list + i, data))
continue;
if (list[i].available)
if (!probe)
break;
- status = crypto_alg_available(name, 0);
+ status = crypto_has_alg(list[i].name, algo_list->type,
+ algo_list->mask);
if (!status)
break;
return NULL;
}
+static int xfrm_alg_id_match(const struct xfrm_algo_desc *entry,
+ const void *data)
+{
+ return entry->desc.sadb_alg_id == (unsigned long)data;
+}
+
+struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id)
+{
+ return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_id_match,
+ (void *)(unsigned long)alg_id, 1);
+}
+EXPORT_SYMBOL_GPL(xfrm_aalg_get_byid);
+
+struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id)
+{
+ return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_id_match,
+ (void *)(unsigned long)alg_id, 1);
+}
+EXPORT_SYMBOL_GPL(xfrm_ealg_get_byid);
+
+struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id)
+{
+ return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_id_match,
+ (void *)(unsigned long)alg_id, 1);
+}
+EXPORT_SYMBOL_GPL(xfrm_calg_get_byid);
+
+static int xfrm_alg_name_match(const struct xfrm_algo_desc *entry,
+ const void *data)
+{
+ const char *name = data;
+
+ return name && (!strcmp(name, entry->name) ||
+ (entry->compat && !strcmp(name, entry->compat)));
+}
+
struct xfrm_algo_desc *xfrm_aalg_get_byname(char *name, int probe)
{
- return xfrm_get_byname(aalg_list, aalg_entries(), name, probe);
+ return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_name_match, name,
+ probe);
}
EXPORT_SYMBOL_GPL(xfrm_aalg_get_byname);
struct xfrm_algo_desc *xfrm_ealg_get_byname(char *name, int probe)
{
- return xfrm_get_byname(ealg_list, ealg_entries(), name, probe);
+ return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_name_match, name,
+ probe);
}
EXPORT_SYMBOL_GPL(xfrm_ealg_get_byname);
struct xfrm_algo_desc *xfrm_calg_get_byname(char *name, int probe)
{
- return xfrm_get_byname(calg_list, calg_entries(), name, probe);
+ return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_name_match, name,
+ probe);
}
EXPORT_SYMBOL_GPL(xfrm_calg_get_byname);
+struct xfrm_aead_name {
+ const char *name;
+ int icvbits;
+};
+
+static int xfrm_aead_name_match(const struct xfrm_algo_desc *entry,
+ const void *data)
+{
+ const struct xfrm_aead_name *aead = data;
+ const char *name = aead->name;
+
+ return aead->icvbits == entry->uinfo.aead.icv_truncbits && name &&
+ !strcmp(name, entry->name);
+}
+
+struct xfrm_algo_desc *xfrm_aead_get_byname(char *name, int icv_len, int probe)
+{
+ struct xfrm_aead_name data = {
+ .name = name,
+ .icvbits = icv_len,
+ };
+
+ return xfrm_find_algo(&xfrm_aead_list, xfrm_aead_name_match, &data,
+ probe);
+}
+EXPORT_SYMBOL_GPL(xfrm_aead_get_byname);
+
struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx)
{
if (idx >= aalg_entries())
*/
void xfrm_probe_algs(void)
{
-#ifdef CONFIG_CRYPTO
int i, status;
-
+
BUG_ON(in_softirq());
for (i = 0; i < aalg_entries(); i++) {
- status = crypto_alg_available(aalg_list[i].name, 0);
+ status = crypto_has_hash(aalg_list[i].name, 0,
+ CRYPTO_ALG_ASYNC);
if (aalg_list[i].available != status)
aalg_list[i].available = status;
}
-
+
for (i = 0; i < ealg_entries(); i++) {
- status = crypto_alg_available(ealg_list[i].name, 0);
+ status = crypto_has_blkcipher(ealg_list[i].name, 0,
+ CRYPTO_ALG_ASYNC);
if (ealg_list[i].available != status)
ealg_list[i].available = status;
}
-
+
for (i = 0; i < calg_entries(); i++) {
- status = crypto_alg_available(calg_list[i].name, 0);
+ status = crypto_has_comp(calg_list[i].name, 0,
+ CRYPTO_ALG_ASYNC);
if (calg_list[i].available != status)
calg_list[i].available = status;
}
-#endif
}
EXPORT_SYMBOL_GPL(xfrm_probe_algs);
/* Move to common area: it is shared with AH. */
-void skb_icv_walk(const struct sk_buff *skb, struct crypto_tfm *tfm,
- int offset, int len, icv_update_fn_t icv_update)
+int skb_icv_walk(const struct sk_buff *skb, struct hash_desc *desc,
+ int offset, int len, icv_update_fn_t icv_update)
{
int start = skb_headlen(skb);
int i, copy = start - offset;
+ int err;
struct scatterlist sg;
/* Checksum header. */
if (copy > 0) {
if (copy > len)
copy = len;
-
- sg.page = virt_to_page(skb->data + offset);
- sg.offset = (unsigned long)(skb->data + offset) % PAGE_SIZE;
- sg.length = copy;
-
- icv_update(tfm, &sg, 1);
-
- if ((len -= copy) == 0)
- return;
- offset += copy;
- }
-
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + skb_shinfo(skb)->frags[i].size;
- if ((copy = end - offset) > 0) {
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- if (copy > len)
- copy = len;
-
- sg.page = frag->page;
- sg.offset = frag->page_offset + offset-start;
- sg.length = copy;
-
- icv_update(tfm, &sg, 1);
-
- if (!(len -= copy))
- return;
- offset += copy;
- }
- start = end;
- }
-
- if (skb_shinfo(skb)->frag_list) {
- struct sk_buff *list = skb_shinfo(skb)->frag_list;
-
- for (; list; list = list->next) {
- int end;
-
- BUG_TRAP(start <= offset + len);
-
- end = start + list->len;
- if ((copy = end - offset) > 0) {
- if (copy > len)
- copy = len;
- skb_icv_walk(list, tfm, offset-start, copy, icv_update);
- if ((len -= copy) == 0)
- return;
- offset += copy;
- }
- start = end;
- }
- }
- if (len)
- BUG();
-}
-EXPORT_SYMBOL_GPL(skb_icv_walk);
-
-#if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE)
-/* Looking generic it is not used in another places. */
+ sg_init_one(&sg, skb->data + offset, copy);
-int
-skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len)
-{
- int start = skb_headlen(skb);
- int i, copy = start - offset;
- int elt = 0;
+ err = icv_update(desc, &sg, copy);
+ if (unlikely(err))
+ return err;
- if (copy > 0) {
- if (copy > len)
- copy = len;
- sg[elt].page = virt_to_page(skb->data + offset);
- sg[elt].offset = (unsigned long)(skb->data + offset) % PAGE_SIZE;
- sg[elt].length = copy;
- elt++;
if ((len -= copy) == 0)
- return elt;
+ return 0;
offset += copy;
}
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
int end;
- BUG_TRAP(start <= offset + len);
+ WARN_ON(start > offset + len);
end = start + skb_shinfo(skb)->frags[i].size;
if ((copy = end - offset) > 0) {
if (copy > len)
copy = len;
- sg[elt].page = frag->page;
- sg[elt].offset = frag->page_offset+offset-start;
- sg[elt].length = copy;
- elt++;
+
+ sg_init_table(&sg, 1);
+ sg_set_page(&sg, frag->page, copy,
+ frag->page_offset + offset-start);
+
+ err = icv_update(desc, &sg, copy);
+ if (unlikely(err))
+ return err;
+
if (!(len -= copy))
- return elt;
+ return 0;
offset += copy;
}
start = end;
for (; list; list = list->next) {
int end;
- BUG_TRAP(start <= offset + len);
+ WARN_ON(start > offset + len);
end = start + list->len;
if ((copy = end - offset) > 0) {
if (copy > len)
copy = len;
- elt += skb_to_sgvec(list, sg+elt, offset - start, copy);
+ err = skb_icv_walk(list, desc, offset-start,
+ copy, icv_update);
+ if (unlikely(err))
+ return err;
if ((len -= copy) == 0)
- return elt;
+ return 0;
offset += copy;
}
start = end;
}
}
- if (len)
- BUG();
- return elt;
+ BUG_ON(len);
+ return 0;
}
-EXPORT_SYMBOL_GPL(skb_to_sgvec);
-
-/* Check that skb data bits are writable. If they are not, copy data
- * to newly created private area. If "tailbits" is given, make sure that
- * tailbits bytes beyond current end of skb are writable.
- *
- * Returns amount of elements of scatterlist to load for subsequent
- * transformations and pointer to writable trailer skb.
- */
-
-int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer)
-{
- int copyflag;
- int elt;
- struct sk_buff *skb1, **skb_p;
-
- /* If skb is cloned or its head is paged, reallocate
- * head pulling out all the pages (pages are considered not writable
- * at the moment even if they are anonymous).
- */
- if ((skb_cloned(skb) || skb_shinfo(skb)->nr_frags) &&
- __pskb_pull_tail(skb, skb_pagelen(skb)-skb_headlen(skb)) == NULL)
- return -ENOMEM;
-
- /* Easy case. Most of packets will go this way. */
- if (!skb_shinfo(skb)->frag_list) {
- /* A little of trouble, not enough of space for trailer.
- * This should not happen, when stack is tuned to generate
- * good frames. OK, on miss we reallocate and reserve even more
- * space, 128 bytes is fair. */
-
- if (skb_tailroom(skb) < tailbits &&
- pskb_expand_head(skb, 0, tailbits-skb_tailroom(skb)+128, GFP_ATOMIC))
- return -ENOMEM;
-
- /* Voila! */
- *trailer = skb;
- return 1;
- }
-
- /* Misery. We are in troubles, going to mincer fragments... */
-
- elt = 1;
- skb_p = &skb_shinfo(skb)->frag_list;
- copyflag = 0;
-
- while ((skb1 = *skb_p) != NULL) {
- int ntail = 0;
-
- /* The fragment is partially pulled by someone,
- * this can happen on input. Copy it and everything
- * after it. */
-
- if (skb_shared(skb1))
- copyflag = 1;
-
- /* If the skb is the last, worry about trailer. */
-
- if (skb1->next == NULL && tailbits) {
- if (skb_shinfo(skb1)->nr_frags ||
- skb_shinfo(skb1)->frag_list ||
- skb_tailroom(skb1) < tailbits)
- ntail = tailbits + 128;
- }
-
- if (copyflag ||
- skb_cloned(skb1) ||
- ntail ||
- skb_shinfo(skb1)->nr_frags ||
- skb_shinfo(skb1)->frag_list) {
- struct sk_buff *skb2;
-
- /* Fuck, we are miserable poor guys... */
- if (ntail == 0)
- skb2 = skb_copy(skb1, GFP_ATOMIC);
- else
- skb2 = skb_copy_expand(skb1,
- skb_headroom(skb1),
- ntail,
- GFP_ATOMIC);
- if (unlikely(skb2 == NULL))
- return -ENOMEM;
-
- if (skb1->sk)
- skb_set_owner_w(skb2, skb1->sk);
-
- /* Looking around. Are we still alive?
- * OK, link new skb, drop old one */
-
- skb2->next = skb1->next;
- *skb_p = skb2;
- kfree_skb(skb1);
- skb1 = skb2;
- }
- elt++;
- *trailer = skb1;
- skb_p = &skb1->next;
- }
+EXPORT_SYMBOL_GPL(skb_icv_walk);
- return elt;
-}
-EXPORT_SYMBOL_GPL(skb_cow_data);
+#if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE)
void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len)
{
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff