Commit d094cd83c06e06e01d8edb540555f3f64e4081c2

Authored by Herbert Xu
Committed by David S. Miller
1 parent 72cb6962a9

[IPSEC]: Add xfrm_state_afinfo->init_flags

This patch adds the xfrm_state_afinfo->init_flags hook which allows
each address family to perform any common initialisation that does
not require a corresponding destructor call.

It will be used subsequently to set the XFRM_STATE_NOPMTUDISC flag
in IPv4.

It also fixes up the error codes returned by xfrm_init_state.

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>

Showing 2 changed files with 19 additions and 2 deletions Side-by-side Diff

... ... @@ -204,6 +204,7 @@
204 204 rwlock_t lock;
205 205 struct list_head *state_bydst;
206 206 struct list_head *state_byspi;
  207 + int (*init_flags)(struct xfrm_state *x);
207 208 void (*init_tempsel)(struct xfrm_state *x, struct flowi *fl,
208 209 struct xfrm_tmpl *tmpl,
209 210 xfrm_address_t *daddr, xfrm_address_t *saddr);
net/xfrm/xfrm_state.c
... ... @@ -1058,10 +1058,26 @@
1058 1058  
1059 1059 int xfrm_init_state(struct xfrm_state *x)
1060 1060 {
  1061 + struct xfrm_state_afinfo *afinfo;
  1062 + int family = x->props.family;
1061 1063 int err;
1062 1064  
1063   - err = -ENOENT;
1064   - x->type = xfrm_get_type(x->id.proto, x->props.family);
  1065 + err = -EAFNOSUPPORT;
  1066 + afinfo = xfrm_state_get_afinfo(family);
  1067 + if (!afinfo)
  1068 + goto error;
  1069 +
  1070 + err = 0;
  1071 + if (afinfo->init_flags)
  1072 + err = afinfo->init_flags(x);
  1073 +
  1074 + xfrm_state_put_afinfo(afinfo);
  1075 +
  1076 + if (err)
  1077 + goto error;
  1078 +
  1079 + err = -EPROTONOSUPPORT;
  1080 + x->type = xfrm_get_type(x->id.proto, family);
1065 1081 if (x->type == NULL)
1066 1082 goto error;
1067 1083