[IPSEC]: Add xfrm_init_state
This patch adds xfrm_init_state which is simply a wrapper that calls
xfrm_get_type and subsequently x->type->init_state. It also gets rid
of the unused args argument.
Abstracting it out allows us to add common initialisation code, e.g.,
to set family-specific flags.
The add_time setting in xfrm_user.c was deleted because it's already
set by xfrm_state_alloc.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: James Morris <jmorris@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 0e65e02..77bfdde 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -225,7 +225,7 @@
struct module *owner;
__u8 proto;
- int (*init_state)(struct xfrm_state *x, void *args);
+ int (*init_state)(struct xfrm_state *x);
void (*destructor)(struct xfrm_state *);
int (*input)(struct xfrm_state *, struct xfrm_decap_state *, struct sk_buff *skb);
int (*post_input)(struct xfrm_state *, struct xfrm_decap_state *, struct sk_buff *skb);
@@ -839,6 +839,7 @@
extern void xfrm_replay_advance(struct xfrm_state *x, u32 seq);
extern int xfrm_state_check(struct xfrm_state *x, struct sk_buff *skb);
extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
+extern int xfrm_init_state(struct xfrm_state *x);
extern int xfrm4_rcv(struct sk_buff *skb);
extern int xfrm4_output(struct sk_buff *skb);
extern int xfrm4_tunnel_register(struct xfrm_tunnel *handler);
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 0e98f22..514c85b 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -200,7 +200,7 @@
xfrm_state_put(x);
}
-static int ah_init_state(struct xfrm_state *x, void *args)
+static int ah_init_state(struct xfrm_state *x)
{
struct ah_data *ahp = NULL;
struct xfrm_algo_desc *aalg_desc;
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index eae84cc..ba57446 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -362,7 +362,7 @@
kfree(esp);
}
-static int esp_init_state(struct xfrm_state *x, void *args)
+static int esp_init_state(struct xfrm_state *x)
{
struct esp_data *esp = NULL;
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index 1a23c52..2065944 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -236,15 +236,10 @@
t->props.mode = 1;
t->props.saddr.a4 = x->props.saddr.a4;
t->props.flags = x->props.flags;
-
- t->type = xfrm_get_type(IPPROTO_IPIP, t->props.family);
- if (t->type == NULL)
- goto error;
-
- if (t->type->init_state(t, NULL))
+
+ if (xfrm_init_state(t))
goto error;
- t->km.state = XFRM_STATE_VALID;
atomic_set(&t->tunnel_users, 1);
out:
return t;
@@ -422,7 +417,7 @@
kfree(ipcd);
}
-static int ipcomp_init_state(struct xfrm_state *x, void *args)
+static int ipcomp_init_state(struct xfrm_state *x)
{
int err;
struct ipcomp_data *ipcd;
diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index 413191f..e1fe360 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -84,7 +84,7 @@
handler->err_handler(skb, &arg);
}
-static int ipip_init_state(struct xfrm_state *x, void *args)
+static int ipip_init_state(struct xfrm_state *x)
{
if (!x->props.mode)
return -EINVAL;
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index e3ecf62..986fdfd 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -339,7 +339,7 @@
xfrm_state_put(x);
}
-static int ah6_init_state(struct xfrm_state *x, void *args)
+static int ah6_init_state(struct xfrm_state *x)
{
struct ah_data *ahp = NULL;
struct xfrm_algo_desc *aalg_desc;
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index be7095d..324db62 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -296,7 +296,7 @@
kfree(esp);
}
-static int esp6_init_state(struct xfrm_state *x, void *args)
+static int esp6_init_state(struct xfrm_state *x)
{
struct esp_data *esp = NULL;
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 6cde531..423feb4 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -234,14 +234,9 @@
t->props.mode = 1;
memcpy(t->props.saddr.a6, x->props.saddr.a6, sizeof(struct in6_addr));
- t->type = xfrm_get_type(IPPROTO_IPV6, t->props.family);
- if (t->type == NULL)
+ if (xfrm_init_state(t))
goto error;
- if (t->type->init_state(t, NULL))
- goto error;
-
- t->km.state = XFRM_STATE_VALID;
atomic_set(&t->tunnel_users, 1);
out:
@@ -420,7 +415,7 @@
xfrm6_tunnel_free_spi((xfrm_address_t *)&x->props.saddr);
}
-static int ipcomp6_init_state(struct xfrm_state *x, void *args)
+static int ipcomp6_init_state(struct xfrm_state *x)
{
int err;
struct ipcomp_data *ipcd;
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index ffcadd6..60c26c8 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -466,7 +466,7 @@
return;
}
-static int xfrm6_tunnel_init_state(struct xfrm_state *x, void *args)
+static int xfrm6_tunnel_init_state(struct xfrm_state *x)
{
if (!x->props.mode)
return -EINVAL;
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 98b72f2..652dd09 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1096,17 +1096,11 @@
}
}
- x->type = xfrm_get_type(proto, x->props.family);
- if (x->type == NULL) {
- err = -ENOPROTOOPT;
+ err = xfrm_init_state(x);
+ if (err)
goto out;
- }
- if (x->type->init_state(x, NULL)) {
- err = -EINVAL;
- goto out;
- }
+
x->km.seq = hdr->sadb_msg_seq;
- x->km.state = XFRM_STATE_VALID;
return x;
out:
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 0a42607..d65ed86 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -118,7 +118,6 @@
xfrm_policy_put_afinfo(afinfo);
return type;
}
-EXPORT_SYMBOL(xfrm_get_type);
int xfrm_dst_lookup(struct xfrm_dst **dst, struct flowi *fl,
unsigned short family)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 2537f26..1845b73 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1055,6 +1055,27 @@
}
EXPORT_SYMBOL(xfrm_state_mtu);
+
+int xfrm_init_state(struct xfrm_state *x)
+{
+ int err;
+
+ err = -ENOENT;
+ x->type = xfrm_get_type(x->id.proto, x->props.family);
+ if (x->type == NULL)
+ goto error;
+
+ err = x->type->init_state(x);
+ if (err)
+ goto error;
+
+ x->km.state = XFRM_STATE_VALID;
+
+error:
+ return err;
+}
+
+EXPORT_SYMBOL(xfrm_init_state);
void __init xfrm_state_init(void)
{
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 5ce8558..ecade48 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -249,17 +249,10 @@
if ((err = attach_encap_tmpl(&x->encap, xfrma[XFRMA_ENCAP-1])))
goto error;
- err = -ENOENT;
- x->type = xfrm_get_type(x->id.proto, x->props.family);
- if (x->type == NULL)
- goto error;
-
- err = x->type->init_state(x, NULL);
+ err = xfrm_init_state(x);
if (err)
goto error;
- x->curlft.add_time = (unsigned long) xtime.tv_sec;
- x->km.state = XFRM_STATE_VALID;
x->km.seq = p->seq;
return x;