From 72cb6962a91f2af9eef69a06198e1949c10259ae Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 20 Jun 2005 13:18:08 -0700 Subject: [PATCH 1/1] [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 Acked-by: James Morris Signed-off-by: David S. Miller --- include/net/xfrm.h | 3 ++- net/ipv4/ah4.c | 2 +- net/ipv4/esp4.c | 2 +- net/ipv4/ipcomp.c | 11 +++-------- net/ipv4/xfrm4_tunnel.c | 2 +- net/ipv6/ah6.c | 2 +- net/ipv6/esp6.c | 2 +- net/ipv6/ipcomp6.c | 9 ++------- net/ipv6/xfrm6_tunnel.c | 2 +- net/key/af_key.c | 12 +++--------- net/xfrm/xfrm_policy.c | 1 - net/xfrm/xfrm_state.c | 21 +++++++++++++++++++++ net/xfrm/xfrm_user.c | 9 +-------- 13 files changed, 38 insertions(+), 40 deletions(-) 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 xfrm_type 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 int xfrm_replay_check(struct xfrm_state *x, u32 seq); 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 @@ static void ah4_err(struct sk_buff *skb, u32 info) 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 @@ static void esp_destroy(struct xfrm_state *x) 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 @@ static struct xfrm_state *ipcomp_tunnel_create(struct xfrm_state *x) 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 @@ static void ipcomp_destroy(struct xfrm_state *x) 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 @@ static void ipip_err(struct sk_buff *skb, u32 info) 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 @@ static void ah6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, 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 @@ static void esp6_destroy(struct xfrm_state *x) 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 @@ static struct xfrm_state *ipcomp6_tunnel_create(struct xfrm_state *x) 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 @@ static void ipcomp6_destroy(struct xfrm_state *x) 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 @@ static void xfrm6_tunnel_err(struct sk_buff *skb, struct inet6_skb_parm *opt, 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 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct sadb_msg *hdr, } } - x->type = xfrm_get_type(proto, x->props.family); - if (x->type == NULL) { - err = -ENOPROTOOPT; - goto out; - } - if (x->type->init_state(x, NULL)) { - err = -EINVAL; + err = xfrm_init_state(x); + if (err) 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 @@ retry: 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 @@ int xfrm_state_mtu(struct xfrm_state *x, int mtu) } 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 @@ static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p, 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; -- 1.8.2.3