[DCCP]: Update code comments for Step 2/3

Sorts out the comments for processing steps 2,3 in section 8.5 of RFC 4340.
All comments have been updated against this document, and the reference to step
2 has been made consistent throughout the files.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

1 files changed, 17 insertions, 21 deletions

diff --git a/net/dccp/input.c b/net/dccp/input.c
index 1d24881ac0ab..97ccdc30fd89 100644
--- a/net/dccp/input.c
+++ b/net/dccp/input.c
@@ -431,29 +431,25 @@ int dccp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 
 	/*
 	 *  Step 3: Process LISTEN state
-	 *  	(Continuing from dccp_v4_do_rcv and dccp_v6_do_rcv)
 	 *
 	 *     If S.state == LISTEN,
-	 *	  If P.type == Request or P contains a valid Init Cookie
-	 *	  	option,
-	 *	     * Must scan the packet's options to check for an Init
-	 *		Cookie.  Only the Init Cookie is processed here,
-	 *		however; other options are processed in Step 8.  This
-	 *		scan need only be performed if the endpoint uses Init
-	 *		Cookies *
-	 *	     * Generate a new socket and switch to that socket *
-	 *	     Set S := new socket for this port pair
-	 *	     S.state = RESPOND
-	 *	     Choose S.ISS (initial seqno) or set from Init Cookie
-	 *	     Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init Cookie
-	 *	     Continue with S.state == RESPOND
-	 *	     * A Response packet will be generated in Step 11 *
-	 *	  Otherwise,
-	 *	     Generate Reset(No Connection) unless P.type == Reset
-	 *	     Drop packet and return
-	 *
-	 * NOTE: the check for the packet types is done in
-	 *	 dccp_rcv_state_process
+	 *	 If P.type == Request or P contains a valid Init Cookie option,
+	 *	      (* Must scan the packet's options to check for Init
+	 *		 Cookies.  Only Init Cookies are processed here,
+	 *		 however; other options are processed in Step 8.  This
+	 *		 scan need only be performed if the endpoint uses Init
+	 *		 Cookies *)
+	 *	      (* Generate a new socket and switch to that socket *)
+	 *	      Set S := new socket for this port pair
+	 *	      S.state = RESPOND
+	 *	      Choose S.ISS (initial seqno) or set from Init Cookies
+	 *	      Initialize S.GAR := S.ISS
+	 *	      Set S.ISR, S.GSR, S.SWL, S.SWH from packet or Init
+	 *	      Cookies Continue with S.state == RESPOND
+	 *	      (* A Response packet will be generated in Step 11 *)
+	 *	 Otherwise,
+	 *	      Generate Reset(No Connection) unless P.type == Reset
+	 *	      Drop packet and return
 	 */
 	if (sk->sk_state == DCCP_LISTEN) {
 		if (dh->dccph_type == DCCP_PKT_REQUEST) {