X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=net%2Fdccp%2Fackvec.h;h=bcb64fb4acefd5ef96d31637d5d5ff80b439bd87;hb=d203b8ef8e5acf9dad5a53d7067ef146e6b2e837;hp=d6a58db5fb132fff48dd6d211ff2e02b0749ffcc;hpb=0bd4ff1b1528a39b07aab6c744ac37e053740ad0;p=linux-2.6-omap-h63xx.git

diff --git a/net/dccp/ackvec.h b/net/dccp/ackvec.h
index d6a58db5fb1..bcb64fb4ace 100644
--- a/net/dccp/ackvec.h
+++ b/net/dccp/ackvec.h
@@ -12,12 +12,14 @@
  */
 
 #include <linux/compiler.h>
+#include <linux/ktime.h>
 #include <linux/list.h>
-#include <linux/time.h>
 #include <linux/types.h>
 
 /* Read about the ECN nonce to see why it is 253 */
-#define DCCP_MAX_ACKVEC_LEN 253
+#define DCCP_MAX_ACKVEC_OPT_LEN 253
+/* We can spread an ack vector across multiple options */
+#define DCCP_MAX_ACKVEC_LEN (DCCP_MAX_ACKVEC_OPT_LEN * 2)
 
 #define DCCP_ACKVEC_STATE_RECEIVED	0
 #define DCCP_ACKVEC_STATE_ECN_MARKED	(1 << 6)
@@ -30,54 +32,54 @@
  *
  * This data structure is the one defined in RFC 4340, Appendix A.
  *
- * @dccpav_buf_head - circular buffer head
- * @dccpav_buf_tail - circular buffer tail
- * @dccpav_buf_ackno - ack # of the most recent packet acknowledgeable in the
- * 		       buffer (i.e. %dccpav_buf_head)
- * @dccpav_buf_nonce - the one-bit sum of the ECN Nonces on all packets acked
+ * @av_buf_head - circular buffer head
+ * @av_buf_tail - circular buffer tail
+ * @av_buf_ackno - ack # of the most recent packet acknowledgeable in the
+ *		       buffer (i.e. %av_buf_head)
+ * @av_buf_nonce - the one-bit sum of the ECN Nonces on all packets acked
  * 		       by the buffer with State 0
  *
  * Additionally, the HC-Receiver must keep some information about the
  * Ack Vectors it has recently sent. For each packet sent carrying an
  * Ack Vector, it remembers four variables:
  *
- * @dccpav_records - list of dccp_ackvec_record
- * @dccpav_ack_nonce - the one-bit sum of the ECN Nonces for all State 0.
+ * @av_records - list of dccp_ackvec_record
+ * @av_ack_nonce - the one-bit sum of the ECN Nonces for all State 0.
  *
- * @dccpav_time		- the time in usecs
- * @dccpav_buf - circular buffer of acknowledgeable packets
+ * @av_time - the time in usecs
+ * @av_buf - circular buffer of acknowledgeable packets
  */
 struct dccp_ackvec {
-	u64		dccpav_buf_ackno;
-	struct list_head dccpav_records;
-	struct timeval	dccpav_time;
-	u8		dccpav_buf_head;
-	u8		dccpav_vec_len;
-	u8		dccpav_buf_nonce;
-	u8		dccpav_ack_nonce;
-	u8		dccpav_buf[DCCP_MAX_ACKVEC_LEN];
+	u64			av_buf_ackno;
+	struct list_head	av_records;
+	ktime_t			av_time;
+	u16			av_buf_head;
+	u16			av_vec_len;
+	u8			av_buf_nonce;
+	u8			av_ack_nonce;
+	u8			av_buf[DCCP_MAX_ACKVEC_LEN];
 };
 
 /** struct dccp_ackvec_record - ack vector record
  *
  * ACK vector record as defined in Appendix A of spec.
  *
- * The list is sorted by dccpavr_ack_seqno
+ * The list is sorted by avr_ack_seqno
  *
- * @dccpavr_node - node in dccpav_records
- * @dccpavr_ack_seqno - sequence number of the packet this record was sent on
- * @dccpavr_ack_ackno - sequence number being acknowledged
- * @dccpavr_ack_ptr - pointer into dccpav_buf where this record starts
- * @dccpavr_ack_nonce - dccpav_ack_nonce at the time this record was sent
- * @dccpavr_sent_len - lenght of the record in dccpav_buf
+ * @avr_node - node in av_records
+ * @avr_ack_seqno - sequence number of the packet this record was sent on
+ * @avr_ack_ackno - sequence number being acknowledged
+ * @avr_ack_ptr - pointer into av_buf where this record starts
+ * @avr_ack_nonce - av_ack_nonce at the time this record was sent
+ * @avr_sent_len - lenght of the record in av_buf
  */
 struct dccp_ackvec_record {
-	struct list_head dccpavr_node;
-	u64		 dccpavr_ack_seqno;
-	u64		 dccpavr_ack_ackno;
-	u8		 dccpavr_ack_ptr;
-	u8		 dccpavr_ack_nonce;
-	u8		 dccpavr_sent_len;
+	struct list_head avr_node;
+	u64		 avr_ack_seqno;
+	u64		 avr_ack_ackno;
+	u16		 avr_ack_ptr;
+	u16		 avr_sent_len;
+	u8		 avr_ack_nonce;
 };
 
 struct sock;
@@ -96,13 +98,14 @@ extern int dccp_ackvec_add(struct dccp_ackvec *av, const struct sock *sk,
 extern void dccp_ackvec_check_rcv_ackno(struct dccp_ackvec *av,
 					struct sock *sk, const u64 ackno);
 extern int dccp_ackvec_parse(struct sock *sk, const struct sk_buff *skb,
-			     const u8 opt, const u8 *value, const u8 len);
+			     u64 *ackno, const u8 opt,
+			     const u8 *value, const u8 len);
 
 extern int dccp_insert_option_ackvec(struct sock *sk, struct sk_buff *skb);
 
 static inline int dccp_ackvec_pending(const struct dccp_ackvec *av)
 {
-	return av->dccpav_vec_len;
+	return av->av_vec_len;
 }
 #else /* CONFIG_IP_DCCP_ACKVEC */
 static inline int dccp_ackvec_init(void)
@@ -135,7 +138,8 @@ static inline void dccp_ackvec_check_rcv_ackno(struct dccp_ackvec *av,
 }
 
 static inline int dccp_ackvec_parse(struct sock *sk, const struct sk_buff *skb,
-				    const u8 opt, const u8 *value, const u8 len)
+				    const u64 *ackno, const u8 opt,
+				    const u8 *value, const u8 len)
 {
 	return -1;
 }