xfrm: Use separate low and high order bits of the sequence numbers in xfrm_skb_cb

To support IPsec extended sequence numbers, we split the
output sequence numbers of xfrm_skb_cb in low and high order 32 bits
and we add the high order 32 bits to the input sequence numbers.
All users are updated accordingly.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 9 insertions, 9 deletions

diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 325053df6e70..4286fd3cc0e2 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -208,7 +208,7 @@ static int ah_output(struct xfrm_state *x, struct sk_buff *skb)
 
         ah->reserved = 0;
         ah->spi = x->id.spi;
-        ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output);
+        ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low);
 
         sg_init_table(sg, nfrags);
         skb_to_sgvec(skb, sg, 0, skb->len);
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index e42a905180f0..882dbbb7d799 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -215,7 +215,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
         }
 
         esph->spi = x->id.spi;
-        esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output);
+        esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low);
 
         sg_init_table(sg, nfrags);
         skb_to_sgvec(skb, sg,
@@ -227,7 +227,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
         aead_givcrypt_set_crypt(req, sg, sg, clen, iv);
         aead_givcrypt_set_assoc(req, asg, sizeof(*esph));
         aead_givcrypt_set_giv(req, esph->enc_data,
-                              XFRM_SKB_CB(skb)->seq.output);
+                              XFRM_SKB_CB(skb)->seq.output.low);
 
         ESP_SKB_CB(skb)->tmp = tmp;
         err = crypto_aead_givencrypt(req);
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 1aba54ae53c4..2195ae651923 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -409,7 +409,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
 
         ah->reserved = 0;
         ah->spi = x->id.spi;
-        ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output);
+        ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low);
 
         sg_init_table(sg, nfrags);
         skb_to_sgvec(skb, sg, 0, skb->len);
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 1b5c9825743b..c7b5d5ee0dee 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -204,7 +204,7 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
         *skb_mac_header(skb) = IPPROTO_ESP;
 
         esph->spi = x->id.spi;
-        esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output);
+        esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low);
 
         sg_init_table(sg, nfrags);
         skb_to_sgvec(skb, sg,
@@ -216,7 +216,7 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
         aead_givcrypt_set_crypt(req, sg, sg, clen, iv);
         aead_givcrypt_set_assoc(req, asg, sizeof(*esph));
         aead_givcrypt_set_giv(req, esph->enc_data,
-                              XFRM_SKB_CB(skb)->seq.output);
+                              XFRM_SKB_CB(skb)->seq.output.low);
 
         ESP_SKB_CB(skb)->tmp = tmp;
         err = crypto_aead_givencrypt(req);
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 45f1c98d4fce..b173b7fdc433 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -118,7 +118,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
         if (encap_type < 0) {
                 async = 1;
                 x = xfrm_input_state(skb);
-                seq = XFRM_SKB_CB(skb)->seq.input;
+                seq = XFRM_SKB_CB(skb)->seq.input.low;
                 goto resume;
         }
 
@@ -184,7 +184,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
 
                 spin_unlock(&x->lock);
 
-                XFRM_SKB_CB(skb)->seq.input = seq;
+                XFRM_SKB_CB(skb)->seq.input.low = seq;
 
                 nexthdr = x->type->input(x, skb);
 
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 64f2ae1fdc15..4b63776a0264 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -68,7 +68,7 @@ static int xfrm_output_one(struct sk_buff *skb, int err)
                 }
 
                 if (x->type->flags & XFRM_TYPE_REPLAY_PROT) {
-                        XFRM_SKB_CB(skb)->seq.output = ++x->replay.oseq;
+                        XFRM_SKB_CB(skb)->seq.output.low = ++x->replay.oseq;
                         if (unlikely(x->replay.oseq == 0)) {
                                 XFRM_INC_STATS(net, LINUX_MIB_XFRMOUTSTATESEQERROR);
                                 x->replay.oseq--;