[IPSEC] Turn km_event.data into a union

This patch turns km_event.data into a union.  This makes code that
uses it clearer.
  
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 5 insertions, 12 deletions

diff --git a/net/key/af_key.c b/net/key/af_key.c
index 560c93c10890..3fae5c4b48f6 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1293,13 +1293,6 @@ static int key_notify_sa(struct xfrm_state *x, struct km_event *c)
         if (c->event == XFRM_SAP_DELETED)
                 hsc = 0;
 
-        if (c->event == XFRM_SAP_EXPIRED) {
-                if (c->data)
-                        hsc = 2;
-                else
-                        hsc = 1;
-        }
-
         skb = pfkey_xfrm_state2msg(x, 0, hsc);
 
         if (IS_ERR(skb))
@@ -1534,7 +1527,7 @@ static int key_notify_sa_flush(struct km_event *c)
         if (!skb)
                 return -ENOBUFS;
         hdr = (struct sadb_msg *) skb_put(skb, sizeof(struct sadb_msg));
-        hdr->sadb_msg_satype = pfkey_proto2satype(c->data);
+        hdr->sadb_msg_satype = pfkey_proto2satype(c->data.proto);
         hdr->sadb_msg_seq = c->seq;
         hdr->sadb_msg_pid = c->pid;
         hdr->sadb_msg_version = PF_KEY_V2;
@@ -1556,7 +1549,7 @@ static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hd
                 return -EINVAL;
 
         xfrm_state_flush(proto);
-        c.data = proto;
+        c.data.proto = proto;
         c.seq = hdr->sadb_msg_seq;
         c.pid = hdr->sadb_msg_pid;
         c.event = XFRM_SAP_FLUSHED;
@@ -1969,7 +1962,7 @@ static int key_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c
         out_hdr = (struct sadb_msg *) out_skb->data;
         out_hdr->sadb_msg_version = PF_KEY_V2;
 
-        if (c->data && c->event == XFRM_SAP_DELETED)
+        if (c->data.byid && c->event == XFRM_SAP_DELETED)
                 out_hdr->sadb_msg_type = SADB_X_SPDDELETE2;
         else
                 out_hdr->sadb_msg_type = event2poltype(c->event);
@@ -2180,7 +2173,7 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
         c.seq = hdr->sadb_msg_seq;
         c.pid = hdr->sadb_msg_pid;
         if (hdr->sadb_msg_type == SADB_X_SPDDELETE2) {
-                c.data = 1; // to signal pfkey of SADB_X_SPDDELETE2
+                c.data.byid = 1;
                 c.event = XFRM_SAP_DELETED;
                 km_policy_notify(xp, pol->sadb_x_policy_dir-1, &c);
         } else {
@@ -2460,7 +2453,7 @@ static int key_notify_sa_expire(struct xfrm_state *x, struct km_event *c)
         int hard;
         int hsc;
 
-        hard = c->data;
+        hard = c->data.hard;
         if (hard)
                 hsc = 2;
         else