[TFRC]: Put RX/TX initialisation into tfrc.c

[~andy/linux] / net / dccp / dccp.h

diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index f62eeb37493120312bc7760d414aee86b8d6f75d..f4a5ea116e34868581f626d0ac1edfce46137ca2 100644 (file)
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -92,6 +92,7 @@ extern int  sysctl_dccp_feat_ack_ratio;
 extern int  sysctl_dccp_feat_send_ack_vector;
 extern int  sysctl_dccp_feat_send_ndp_count;
 extern int  sysctl_dccp_tx_qlen;
+extern int  sysctl_dccp_sync_ratelimit;
 
 /*
  *     48-bit sequence number arithmetic (signed and unsigned)
@@ -293,6 +294,8 @@ extern unsigned int dccp_poll(struct file *file, struct socket *sock,
 extern int        dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr,
                                   int addr_len);
 
+extern struct sk_buff *dccp_ctl_make_reset(struct socket *ctl,
+                                          struct sk_buff *skb);
 extern int        dccp_send_reset(struct sock *sk, enum dccp_reset_codes code);
 extern void       dccp_send_close(struct sock *sk, const int active);
 extern int        dccp_invalid_packet(struct sk_buff *skb);
@@ -308,10 +311,22 @@ static inline int dccp_bad_service_code(const struct sock *sk,
        return !dccp_list_has_service(dp->dccps_service_list, service);
 }
 
+/**
+ * dccp_skb_cb  -  DCCP per-packet control information
+ * @dccpd_type: one of %dccp_pkt_type (or unknown)
+ * @dccpd_ccval: CCVal field (5.1), see e.g. RFC 4342, 8.1
+ * @dccpd_reset_code: one of %dccp_reset_codes
+ * @dccpd_reset_data: Data1..3 fields (depend on @dccpd_reset_code)
+ * @dccpd_opt_len: total length of all options (5.8) in the packet
+ * @dccpd_seq: sequence number
+ * @dccpd_ack_seq: acknowledgment number subheader field value
+ * This is used for transmission as well as for reception.
+ */
 struct dccp_skb_cb {
        __u8  dccpd_type:4;
        __u8  dccpd_ccval:4;
-       __u8  dccpd_reset_code;
+       __u8  dccpd_reset_code,
+             dccpd_reset_data[3];
        __u16 dccpd_opt_len;
        __u64 dccpd_seq;
        __u64 dccpd_ack_seq;
@@ -319,6 +334,7 @@ struct dccp_skb_cb {
 
 #define DCCP_SKB_CB(__skb) ((struct dccp_skb_cb *)&((__skb)->cb[0]))
 
+/* RFC 4340, sec. 7.7 */
 static inline int dccp_non_data_packet(const struct sk_buff *skb)
 {
        const __u8 type = DCCP_SKB_CB(skb)->dccpd_type;
@@ -331,6 +347,17 @@ static inline int dccp_non_data_packet(const struct sk_buff *skb)
               type == DCCP_PKT_SYNCACK;
 }
 
+/* RFC 4340, sec. 7.7 */
+static inline int dccp_data_packet(const struct sk_buff *skb)
+{
+       const __u8 type = DCCP_SKB_CB(skb)->dccpd_type;
+
+       return type == DCCP_PKT_DATA     ||
+              type == DCCP_PKT_DATAACK  ||
+              type == DCCP_PKT_REQUEST  ||
+              type == DCCP_PKT_RESPONSE;
+}
+
 static inline int dccp_packet_without_ack(const struct sk_buff *skb)
 {
        const __u8 type = DCCP_SKB_CB(skb)->dccpd_type;