1 files changed, 34 insertions, 22 deletions

diff --git a/net/dccp/input.c b/net/dccp/input.c
index 55e921bdd131..5e312b04a7db 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -151,29 +151,12 @@ static int dccp_check_seqno(struct sock *sk, struct sk_buff *skb)
         return 0;
 }
 
-int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
-                         const struct dccp_hdr *dh, const unsigned len)
+static inline int __dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
+                                         const struct dccp_hdr *dh,
+                                         const unsigned len)
 {
         struct dccp_sock *dp = dccp_sk(sk);
 
-        if (dccp_check_seqno(sk, skb))
-                goto discard;
-
-        if (dccp_parse_options(sk, skb))
-                goto discard;
-
-        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
-                dccp_event_ack_recv(sk, skb);
-
-        if (dp->dccps_options.dccpo_send_ack_vector &&
-            dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
-                            DCCP_SKB_CB(skb)->dccpd_seq,
-                            DCCP_ACKVEC_STATE_RECEIVED))
-                goto discard;
-
-        ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
-        ccid_hc_tx_packet_recv(dp->dccps_hc_tx_ccid, sk, skb);
-
         switch (dccp_hdr(skb)->dccph_type) {
         case DCCP_PKT_DATAACK:
         case DCCP_PKT_DATA:
@@ -250,6 +233,35 @@ discard:
         return 0;
 }
 
+int dccp_rcv_established(struct sock *sk, struct sk_buff *skb,
+                         const struct dccp_hdr *dh, const unsigned len)
+{
+        struct dccp_sock *dp = dccp_sk(sk);
+
+        if (dccp_check_seqno(sk, skb))
+                goto discard;
+
+        if (dccp_parse_options(sk, skb))
+                goto discard;
+
+        if (DCCP_SKB_CB(skb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
+                dccp_event_ack_recv(sk, skb);
+
+        if (dp->dccps_options.dccpo_send_ack_vector &&
+            dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk,
+                            DCCP_SKB_CB(skb)->dccpd_seq,
+                            DCCP_ACKVEC_STATE_RECEIVED))
+                goto discard;
+
+        ccid_hc_rx_packet_recv(dp->dccps_hc_rx_ccid, sk, skb);
+        ccid_hc_tx_packet_recv(dp->dccps_hc_tx_ccid, sk, skb);
+
+        return __dccp_rcv_established(sk, skb, dh, len);
+discard:
+        __kfree_skb(skb);
+        return 0;
+}
+
 EXPORT_SYMBOL_GPL(dccp_rcv_established);
 
 static int dccp_rcv_request_sent_state_process(struct sock *sk,
@@ -400,9 +412,9 @@ static int dccp_rcv_respond_partopen_state_process(struct sock *sk,
 
                 if (dh->dccph_type == DCCP_PKT_DATAACK ||
                     dh->dccph_type == DCCP_PKT_DATA) {
-                        dccp_rcv_established(sk, skb, dh, len);
+                        __dccp_rcv_established(sk, skb, dh, len);
                         queued = 1; /* packet was queued
-                                       (by dccp_rcv_established) */
+                                       (by __dccp_rcv_established) */
                 }
                 break;
         }