[XFRM] SAD info TLV aggregationx

Aggregate the SAD info TLVs.

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

4 files changed, 25 insertions, 37 deletions

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index a5d53e0fe152..c237fe3af8ce 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -243,17 +243,6 @@ enum xfrm_ae_ftype_t {
 #define XFRM_AE_MAX (__XFRM_AE_MAX - 1)
 };
 
-/* SAD Table filter flags  */
-enum xfrm_sad_ftype_t {
-        XFRM_SAD_UNSPEC,
-        XFRM_SAD_HMASK=1,
-        XFRM_SAD_HMAX=2,
-        XFRM_SAD_CNT=4,
-        __XFRM_SAD_MAX
-
-#define XFRM_SAD_MAX (__XFRM_SAD_MAX - 1)
-};
-
 struct xfrm_userpolicy_type {
         __u8            type;
         __u16           reserved1;
@@ -287,14 +276,18 @@ enum xfrm_attr_type_t {
 
 enum xfrm_sadattr_type_t {
         XFRMA_SAD_UNSPEC,
-        XFRMA_SADHMASK,
-        XFRMA_SADHMAX,
-        XFRMA_SADCNT,
+        XFRMA_SAD_CNT,
+        XFRMA_SAD_HINFO,
         __XFRMA_SAD_MAX
 
 #define XFRMA_SAD_MAX (__XFRMA_SAD_MAX - 1)
 };
 
+struct xfrmu_sadhinfo {
+        __u32 sadhcnt; /* current hash bkts */
+        __u32 sadhmcnt; /* max allowed hash bkts */
+};
+
 /* SPD Table filter flags  */
 enum xfrm_spd_ftype_t {
         XFRM_SPD_UNSPEC,
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 66c2d3eec03c..d0d7db51d3fc 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -416,14 +416,6 @@ struct xfrm_audit
         u32     secid;
 };
 
-/* SAD metadata, add more later */
-struct xfrm_sadinfo
-{
-        u32 sadhcnt; /* current hash bkts */
-        u32 sadhmcnt; /* max allowed hash bkts */
-        u32 sadcnt; /* current running count */
-};
-
 struct xfrm_spdinfo
 {
         u32 incnt;
@@ -964,10 +956,17 @@ static inline int xfrm_state_sort(struct xfrm_state **dst, struct xfrm_state **s
         return -ENOSYS;
 }
 #endif
+
+struct xfrmk_sadinfo {
+        u32 sadhcnt; /* current hash bkts */
+        u32 sadhmcnt; /* max allowed hash bkts */
+        u32 sadcnt; /* current running count */
+};
+
 extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
 extern int xfrm_state_delete(struct xfrm_state *x);
 extern void xfrm_state_flush(u8 proto, struct xfrm_audit *audit_info);
-extern void xfrm_sad_getinfo(struct xfrm_sadinfo *si);
+extern void xfrm_sad_getinfo(struct xfrmk_sadinfo *si);
 extern void xfrm_spd_getinfo(struct xfrm_spdinfo *si);
 extern int xfrm_replay_check(struct xfrm_state *x, __be32 seq);
 extern void xfrm_replay_advance(struct xfrm_state *x, __be32 seq);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index f3a61ebd8d65..9955ff4da0a2 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -421,7 +421,7 @@ restart:
 }
 EXPORT_SYMBOL(xfrm_state_flush);
 
-void xfrm_sad_getinfo(struct xfrm_sadinfo *si)
+void xfrm_sad_getinfo(struct xfrmk_sadinfo *si)
 {
         spin_lock_bh(&xfrm_state_lock);
         si->sadcnt = xfrm_state_num;
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 4210d91624cd..c35b9ea3b62b 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -749,7 +749,8 @@ static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 static int build_sadinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
 {
-        struct xfrm_sadinfo si;
+        struct xfrmk_sadinfo si;
+        struct xfrmu_sadhinfo sh;
         struct nlmsghdr *nlh;
         u32 *f;
 
@@ -761,12 +762,11 @@ static int build_sadinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
         *f = flags;
         xfrm_sad_getinfo(&si);
 
-        if (flags & XFRM_SAD_HMASK)
-                NLA_PUT_U32(skb, XFRMA_SADHMASK, si.sadhcnt);
-        if (flags & XFRM_SAD_HMAX)
-                NLA_PUT_U32(skb, XFRMA_SADHMAX, si.sadhmcnt);
-        if (flags & XFRM_SAD_CNT)
-                NLA_PUT_U32(skb, XFRMA_SADCNT, si.sadcnt);
+        sh.sadhmcnt = si.sadhmcnt;
+        sh.sadhcnt = si.sadhcnt;
+
+        NLA_PUT_U32(skb, XFRMA_SAD_CNT, si.sadcnt);
+        NLA_PUT(skb, XFRMA_SAD_HINFO, sizeof(sh), &sh);
 
         return nlmsg_end(skb, nlh);
 
@@ -784,12 +784,8 @@ static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
         u32 seq = nlh->nlmsg_seq;
         int len = NLMSG_LENGTH(sizeof(u32));
 
-        if (*flags & XFRM_SAD_HMASK)
-                len += RTA_SPACE(sizeof(u32));
-        if (*flags & XFRM_SAD_HMAX)
-                len += RTA_SPACE(sizeof(u32));
-        if (*flags & XFRM_SAD_CNT)
-                len += RTA_SPACE(sizeof(u32));
+        len += RTA_SPACE(sizeof(struct xfrmu_sadhinfo));
+        len += RTA_SPACE(sizeof(u32));
 
         r_skb = alloc_skb(len, GFP_ATOMIC);