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SubjectRe: Latest bk build error in xfrm.h
From
   From: Rusty Lynch <rusty@linux.co.intel.com>
Date: 06 Mar 2003 13:38:44 -0800

The problem is now the core networking has a dependency on the crypto
hmac code (CONFIG_CRYOTPO_HMAC) since the ipv4 ipsec code was added to
include/net/xfrm.h (which is included from all kinds of places.)

The pretty much exhaust my networking/ipsec knowledge so no patch.

I just pushed the following patch to Linus, should fix the build for
everyone. It's also available at:

bk://kernel.bkbits.net/davem/netfix-2.5

Thanks.

ChangeSet@1.1075.2.1, 2003-03-06 16:17:07-08:00, davem@nuts.ninka.net
[IPSEC]: Fix build when ipsec is disabled.

diff -Nru a/include/net/ah.h b/include/net/ah.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/include/net/ah.h Thu Mar 6 15:39:12 2003
@@ -0,0 +1,35 @@
+#ifndef _NET_AH_H
+#define _NET_AH_H
+
+#include <net/xfrm.h>
+
+struct ah_data
+{
+ u8 *key;
+ int key_len;
+ u8 *work_icv;
+ int icv_full_len;
+ int icv_trunc_len;
+
+ void (*icv)(struct ah_data*,
+ struct sk_buff *skb, u8 *icv);
+
+ struct crypto_tfm *tfm;
+};
+
+extern void skb_ah_walk(const struct sk_buff *skb,
+ struct crypto_tfm *tfm, icv_update_fn_t icv_update);
+
+static inline void
+ah_hmac_digest(struct ah_data *ahp, struct sk_buff *skb, u8 *auth_data)
+{
+ struct crypto_tfm *tfm = ahp->tfm;
+
+ memset(auth_data, 0, ahp->icv_trunc_len);
+ crypto_hmac_init(tfm, ahp->key, &ahp->key_len);
+ skb_ah_walk(skb, tfm, crypto_hmac_update);
+ crypto_hmac_final(tfm, ahp->key, &ahp->key_len, ahp->work_icv);
+ memcpy(auth_data, ahp->work_icv, ahp->icv_trunc_len);
+}
+
+#endif
diff -Nru a/include/net/esp.h b/include/net/esp.h
--- /dev/null Wed Dec 31 16:00:00 1969
+++ b/include/net/esp.h Thu Mar 6 15:39:12 2003
@@ -0,0 +1,56 @@
+#ifndef _NET_ESP_H
+#define _NET_ESP_H
+
+#include <net/xfrm.h>
+
+struct esp_data
+{
+ /* Confidentiality */
+ struct {
+ u8 *key; /* Key */
+ int key_len; /* Key length */
+ u8 *ivec; /* ivec buffer */
+ /* ivlen is offset from enc_data, where encrypted data start.
+ * It is logically different of crypto_tfm_alg_ivsize(tfm).
+ * We assume that it is either zero (no ivec), or
+ * >= crypto_tfm_alg_ivsize(tfm). */
+ int ivlen;
+ int padlen; /* 0..255 */
+ struct crypto_tfm *tfm; /* crypto handle */
+ } conf;
+
+ /* Integrity. It is active when icv_full_len != 0 */
+ struct {
+ u8 *key; /* Key */
+ int key_len; /* Length of the key */
+ u8 *work_icv;
+ int icv_full_len;
+ int icv_trunc_len;
+ void (*icv)(struct esp_data*,
+ struct sk_buff *skb,
+ int offset, int len, u8 *icv);
+ struct crypto_tfm *tfm;
+ } auth;
+};
+
+extern void skb_icv_walk(const struct sk_buff *skb, struct crypto_tfm *tfm,
+ int offset, int len, icv_update_fn_t icv_update);
+extern int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len);
+extern int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer);
+extern void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len);
+
+static inline void
+esp_hmac_digest(struct esp_data *esp, struct sk_buff *skb, int offset,
+ int len, u8 *auth_data)
+{
+ struct crypto_tfm *tfm = esp->auth.tfm;
+ char *icv = esp->auth.work_icv;
+
+ memset(auth_data, 0, esp->auth.icv_trunc_len);
+ crypto_hmac_init(tfm, esp->auth.key, &esp->auth.key_len);
+ skb_icv_walk(skb, tfm, offset, len, crypto_hmac_update);
+ crypto_hmac_final(tfm, esp->auth.key, &esp->auth.key_len, icv);
+ memcpy(auth_data, icv, esp->auth.icv_trunc_len);
+}
+
+#endif
diff -Nru a/include/net/xfrm.h b/include/net/xfrm.h
--- a/include/net/xfrm.h Thu Mar 6 15:39:12 2003
+++ b/include/net/xfrm.h Thu Mar 6 15:39:12 2003
@@ -492,85 +492,8 @@
extern int xfrm6_unregister_type(struct xfrm_type *type);
extern struct xfrm_type *xfrm6_get_type(u8 proto);

-struct ah_data
-{
- u8 *key;
- int key_len;
- u8 *work_icv;
- int icv_full_len;
- int icv_trunc_len;
-
- void (*icv)(struct ah_data*,
- struct sk_buff *skb, u8 *icv);
-
- struct crypto_tfm *tfm;
-};
-
-struct esp_data
-{
- /* Confidentiality */
- struct {
- u8 *key; /* Key */
- int key_len; /* Key length */
- u8 *ivec; /* ivec buffer */
- /* ivlen is offset from enc_data, where encrypted data start.
- * It is logically different of crypto_tfm_alg_ivsize(tfm).
- * We assume that it is either zero (no ivec), or
- * >= crypto_tfm_alg_ivsize(tfm). */
- int ivlen;
- int padlen; /* 0..255 */
- struct crypto_tfm *tfm; /* crypto handle */
- } conf;
-
- /* Integrity. It is active when icv_full_len != 0 */
- struct {
- u8 *key; /* Key */
- int key_len; /* Length of the key */
- u8 *work_icv;
- int icv_full_len;
- int icv_trunc_len;
- void (*icv)(struct esp_data*,
- struct sk_buff *skb,
- int offset, int len, u8 *icv);
- struct crypto_tfm *tfm;
- } auth;
-};
-
+struct crypto_tfm;
typedef void (icv_update_fn_t)(struct crypto_tfm *, struct scatterlist *, unsigned int);
-extern void skb_ah_walk(const struct sk_buff *skb,
- struct crypto_tfm *tfm, icv_update_fn_t icv_update);
-extern void skb_icv_walk(const struct sk_buff *skb, struct crypto_tfm *tfm,
- int offset, int len, icv_update_fn_t icv_update);
-extern int skb_to_sgvec(struct sk_buff *skb, struct scatterlist *sg, int offset, int len);
-extern int skb_cow_data(struct sk_buff *skb, int tailbits, struct sk_buff **trailer);
-extern void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len);
-
-static inline void
-ah_hmac_digest(struct ah_data *ahp, struct sk_buff *skb, u8 *auth_data)
-{
- struct crypto_tfm *tfm = ahp->tfm;
-
- memset(auth_data, 0, ahp->icv_trunc_len);
- crypto_hmac_init(tfm, ahp->key, &ahp->key_len);
- skb_ah_walk(skb, tfm, crypto_hmac_update);
- crypto_hmac_final(tfm, ahp->key, &ahp->key_len, ahp->work_icv);
- memcpy(auth_data, ahp->work_icv, ahp->icv_trunc_len);
-}
-
-static inline void
-esp_hmac_digest(struct esp_data *esp, struct sk_buff *skb, int offset,
- int len, u8 *auth_data)
-{
- struct crypto_tfm *tfm = esp->auth.tfm;
- char *icv = esp->auth.work_icv;
-
- memset(auth_data, 0, esp->auth.icv_trunc_len);
- crypto_hmac_init(tfm, esp->auth.key, &esp->auth.key_len);
- skb_icv_walk(skb, tfm, offset, len, crypto_hmac_update);
- crypto_hmac_final(tfm, esp->auth.key, &esp->auth.key_len, icv);
- memcpy(auth_data, icv, esp->auth.icv_trunc_len);
-}
-

typedef int (xfrm_dst_lookup_t)(struct xfrm_dst **dst, struct flowi *fl);
int xfrm_dst_lookup_register(xfrm_dst_lookup_t *dst_lookup, unsigned short family);
diff -Nru a/net/ipv4/ah.c b/net/ipv4/ah.c
--- a/net/ipv4/ah.c Thu Mar 6 15:39:12 2003
+++ b/net/ipv4/ah.c Thu Mar 6 15:39:12 2003
@@ -2,6 +2,7 @@
#include <linux/module.h>
#include <net/ip.h>
#include <net/xfrm.h>
+#include <net/ah.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
#include <net/icmp.h>
diff -Nru a/net/ipv4/esp.c b/net/ipv4/esp.c
--- a/net/ipv4/esp.c Thu Mar 6 15:39:12 2003
+++ b/net/ipv4/esp.c Thu Mar 6 15:39:12 2003
@@ -2,6 +2,7 @@
#include <linux/module.h>
#include <net/ip.h>
#include <net/xfrm.h>
+#include <net/esp.h>
#include <asm/scatterlist.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
diff -Nru a/net/ipv4/xfrm_algo.c b/net/ipv4/xfrm_algo.c
--- a/net/ipv4/xfrm_algo.c Thu Mar 6 15:39:12 2003
+++ b/net/ipv4/xfrm_algo.c Thu Mar 6 15:39:12 2003
@@ -12,6 +12,12 @@
#include <linux/kernel.h>
#include <linux/pfkeyv2.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>
+#endif
+#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>

/*
diff -Nru a/net/ipv6/ah6.c b/net/ipv6/ah6.c
--- a/net/ipv6/ah6.c Thu Mar 6 15:39:12 2003
+++ b/net/ipv6/ah6.c Thu Mar 6 15:39:12 2003
@@ -28,6 +28,7 @@
#include <linux/module.h>
#include <net/ip.h>
#include <net/xfrm.h>
+#include <net/ah.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
#include <net/icmp.h>
diff -Nru a/net/ipv6/esp6.c b/net/ipv6/esp6.c
--- a/net/ipv6/esp6.c Thu Mar 6 15:39:12 2003
+++ b/net/ipv6/esp6.c Thu Mar 6 15:39:12 2003
@@ -28,6 +28,7 @@
#include <linux/module.h>
#include <net/ip.h>
#include <net/xfrm.h>
+#include <net/esp.h>
#include <asm/scatterlist.h>
#include <linux/crypto.h>
#include <linux/pfkeyv2.h>
diff -Nru a/net/netsyms.c b/net/netsyms.c
--- a/net/netsyms.c Thu Mar 6 15:39:12 2003
+++ b/net/netsyms.c Thu Mar 6 15:39:12 2003
@@ -54,6 +54,12 @@
#include <linux/mroute.h>
#include <linux/igmp.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>
+#endif
+#if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE)
+#include <net/esp.h>
+#endif

extern struct net_proto_family inet_family_ops;


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