[XFRM]: Fix aevent structuring to be more complete.

aevents can not uniquely identify an SA. We break the ABI with this
patch, but consensus is that since it is not yet utilized by any
(known) application then it is fine (better do it now than later).

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 9 insertions, 2 deletions

diff --git a/Documentation/networking/xfrm_sync.txt b/Documentation/networking/xfrm_sync.txt
index 8be626f7c0b8..d7aac9dedeb4 100644
--- a/Documentation/networking/xfrm_sync.txt
+++ b/Documentation/networking/xfrm_sync.txt
@@ -47,10 +47,13 @@ aevent_id structure looks like:
 
    struct xfrm_aevent_id {
              struct xfrm_usersa_id           sa_id;
+             xfrm_address_t                  saddr;
              __u32                           flags;
+             __u32                           reqid;
    };
 
-xfrm_usersa_id in this message layout identifies the SA.
+The unique SA is identified by the combination of xfrm_usersa_id,
+reqid and saddr.
 
 flags are used to indicate different things. The possible
 flags are:
diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 7907c42bd4e4..088ba8113f7e 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -289,7 +289,9 @@ struct xfrm_usersa_id {
 
 struct xfrm_aevent_id {
         struct xfrm_usersa_id           sa_id;
+        xfrm_address_t                  saddr;
         __u32                           flags;
+        __u32                           reqid;
 };
 
 struct xfrm_userspi_info {
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 055b72fb37bc..6f97665983d2 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1281,10 +1281,12 @@ static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, struct km_eve
         id = NLMSG_DATA(nlh);
         nlh->nlmsg_flags = 0;
 
-        id->sa_id.daddr = x->id.daddr;
+        memcpy(&id->sa_id.daddr, &x->id.daddr,sizeof(x->id.daddr));
         id->sa_id.spi = x->id.spi;
         id->sa_id.family = x->props.family;
         id->sa_id.proto = x->id.proto;
+        memcpy(&id->saddr, &x->props.saddr,sizeof(x->props.saddr));
+        id->reqid = x->props.reqid;
         id->flags = c->data.aevent;
 
         RTA_PUT(skb, XFRMA_REPLAY_VAL, sizeof(x->replay), &x->replay);