From 2c9173986a0bee7db0a090b7cada8bd8123ffd9b Mon Sep 17 00:00:00 2001
From: "Kevin P. Fleming" <kpfleming@digium.com>
Date: Thu, 7 Jun 2007 22:18:38 +0000
Subject: Merged revisions 68313 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r68313 | kpfleming | 2007-06-07 17:14:35 -0500 (Thu, 07 Jun 2007) | 6 lines

some improvements to the IAX2 full frame dropping logic recently added:

- use inaddrcmp(), since we have it
- output the type of frame and subclass being dropped, and the type/subclass that is already being processed (which caused the drop)


........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@68321 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_iax2.c | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 086f4b03d..b218582ba 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -726,12 +726,16 @@ struct iax2_thread {
 	time_t checktime;
 	ast_mutex_t lock;
 	ast_cond_t cond;
-	/*! If this thread is processing a full frame, the callno for that frame
-	 *  will be here, so we can avoid dispatching any more full frames
-	 *  or that callno to other threads */
-	unsigned short ffcallno;
-	/*! Remember the peer IP/port number for a full frame in process */
-	struct sockaddr_in ffsin;
+	/*! if this thread is processing a full frame,
+	  some information about that frame will be stored
+	  here, so we can avoid dispatching any more full
+	  frames for that callno to other threads */
+	struct {
+		unsigned short callno;
+		struct sockaddr_in sin;
+		unsigned char type;
+		unsigned char csub;
+	} ffinfo;
 };
 
 /* Thread lists */
@@ -974,10 +978,8 @@ static struct iax2_thread *find_idle_thread(void)
 
 	/* this thread is not processing a full frame (since it is idle),
 	   so ensure that the field for the full frame call number is empty */
-	if (thread) {
-		thread->ffcallno = 0;
-		memset(&thread->ffsin, 0, sizeof(thread->ffsin));
-	}
+	if (thread)
+		memset(&thread->ffinfo, 0, sizeof(thread->ffinfo));
 
 	return thread;
 }
@@ -6562,22 +6564,24 @@ static int socket_read(int *id, int fd, short events, void *cbdata)
 		
 		AST_LIST_LOCK(&active_list);
 		AST_LIST_TRAVERSE(&active_list, cur, list) {
-			if ((cur->ffcallno == ntohs(fh->scallno)) &&
-			    !memcmp(&cur->ffsin, &thread->iosin, sizeof(cur->ffsin)))
+			if ((cur->ffinfo.callno == ntohs(fh->scallno)) &&
+			    !inaddrcmp(&cur->ffinfo.sin, &thread->iosin))
 				break;
 		}
 		AST_LIST_UNLOCK(&active_list);
 		if (cur) {
 			/* we found another thread processing a full frame for this call,
 			   so we can't accept this frame */
-			ast_log(LOG_WARNING, "Dropping full frame from %s (callno %d) received too rapidly\n",
-				ast_inet_ntoa(thread->iosin.sin_addr), cur->ffcallno);
+			ast_log(LOG_WARNING, "Dropping frame from %s (callno %d) of type %d (subclass %d) due to frame of type %d (subclass %d) already in process\n",
+				ast_inet_ntoa(thread->iosin.sin_addr), cur->ffinfo.callno,
+				fh->type, uncompress_subclass(fh->csub),
+				cur->ffinfo.type, uncompress_subclass(cur->ffinfo.csub));
 			insert_idle_thread(thread);
 			return 1;
 		} else {
 			/* this thread is going to process this frame, so mark it */
-			thread->ffcallno = ntohs(fh->scallno);
-			memcpy(&thread->ffsin, &thread->iosin, sizeof(thread->ffsin));
+			thread->ffinfo.callno = ntohs(fh->scallno);
+			memcpy(&thread->ffinfo.sin, &thread->iosin, sizeof(thread->ffinfo.sin));
 		}
 	}
 	
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