Thread: [bwm-tools-devel] COMMIT - r66 - in trunk: bwmd include
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From: SVN C. <sv...@li...> - 2005-01-30 16:04:15
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Author: nkukard
Date: 2005-01-30 18:03:38 +0200 (Sun, 30 Jan 2005)
New Revision: 66
Modified:
trunk/bwmd/autoclass.c
trunk/bwmd/flow.c
trunk/bwmd/ipq.c
trunk/include/autoclass.h
trunk/include/common.h
trunk/include/flow.h
Log:
* Added ECN support
Modified: trunk/bwmd/autoclass.c
===================================================================
--- trunk/bwmd/autoclass.c 2005-01-26 16:29:04 UTC (rev 65)
+++ trunk/bwmd/autoclass.c 2005-01-30 16:03:38 UTC (rev 66)
@@ -161,11 +161,13 @@
{
unsigned char prio = 0;
// Get type of service
- unsigned char tos = IPTOS_TOS(ip_packet->tos);
+// unsigned char ecn = AUTOCLASS_TOS_ECN_MASK(ip_packet->tos);
+ unsigned char tos = AUTOCLASS_TOS_MASK(ip_packet->tos);
+// unsigned char prec = AUTOCLASS_TOS_PREC_MASK(ip_packet->tos);
// Decide what we doing...
- if (tos == IPTOS_LOWDELAY)
+ if (tos == AUTOCLASS_TOS_LOWDELAY)
{
/*
* 1. LOW DELAY
@@ -174,7 +176,7 @@
*/
prio = 10;
}
- else if (tos == IPTOS_THROUGHPUT)
+ else if (tos == AUTOCLASS_TOS_THROUGHPUT)
{
/*
* 2. THROUGHPUT
@@ -182,22 +184,13 @@
* - low drop probability
*/
}
- else if (tos == IPTOS_RELIABILITY)
+ else if (tos == AUTOCLASS_TOS_RELIABILITY)
{
/*
* 3. RELIABILITY
* - low drop probability
*/
}
- else if (tos == IPTOS_MINCOST)
- {
-/*
- * 4. MIN COST
- * - PRIO 90
- * - high drop probability
- */
- prio = 90;
- }
return prio;
}
Modified: trunk/bwmd/flow.c
===================================================================
--- trunk/bwmd/flow.c 2005-01-26 16:29:04 UTC (rev 65)
+++ trunk/bwmd/flow.c 2005-01-30 16:03:38 UTC (rev 66)
@@ -365,7 +365,18 @@
{
// Re-inject packet for processing, check if it was ok...
g_mutex_lock(runnerData->IPQLock);
- status = ipq_set_verdict(runnerData->IPQHandle, PKT_ID(packet), NF_ACCEPT, 0, NULL);
+
+ // Check if our packet was changed
+ if (packet->changed)
+ {
+ struct ip_packet_t *ip_packet = (struct ip_packet_t *) packet->payload->payload;
+
+ // Send packet back modified
+ status = ipq_set_verdict(runnerData->IPQHandle, PKT_ID(packet), NF_ACCEPT, ip_packet->tot_len, (unsigned char *) ip_packet);
+ }
+ else
+ status = ipq_set_verdict(runnerData->IPQHandle, PKT_ID(packet), NF_ACCEPT, 0, NULL);
+
g_mutex_unlock(runnerData->IPQLock);
if (status < 0)
{
Modified: trunk/bwmd/ipq.c
===================================================================
--- trunk/bwmd/ipq.c 2005-01-26 16:29:04 UTC (rev 65)
+++ trunk/bwmd/ipq.c 2005-01-30 16:03:38 UTC (rev 66)
@@ -92,6 +92,7 @@
int status;
int result;
int drop = 0;
+ struct ip_packet_t *ip_packet = (struct ip_packet_t *) packet->payload->payload;
// Our find functions
@@ -138,15 +139,8 @@
// Now lets see if we don't have a queue... this means AUTO!
if (!foundQueue)
{
- struct ip_packet_t *ip_packet = (struct ip_packet_t *) packet->payload->payload;
unsigned char prio = 0;
-/*
- fprintf(stderr,"auto packet queue -> protocol = %i, src = %i.%i.%i.%i, dest = %i.%i.%i.%i, tos = 0x%x\n", ip_packet->protocol,
- ip_packet->u_saddr.addr.a, ip_packet->u_saddr.addr.b, ip_packet->u_saddr.addr.c, ip_packet->u_saddr.addr.d,
- ip_packet->u_daddr.addr.a, ip_packet->u_daddr.addr.b, ip_packet->u_daddr.addr.c, ip_packet->u_daddr.addr.d,
- IPTOS_PREC(ip_packet->tos));
-*/
prio = autoClassify(ip_packet,foundFlow->prioClassifier);
@@ -191,8 +185,24 @@
prob = avgProb + curProb;
// Check if we should drop packet
drop = drand < prob;
+
+ // If queue is 10% full, set CE bit if we ECN capable
+ if (!drop && (avgQueueSize / curQueueSize) > 0.10)
+ {
+ unsigned char ecn = AUTOCLASS_TOS_ECN_MASK(ip_packet->tos);
+
+
+ // We are ECN capable
+ if (ecn < 3)
+ {
+ // Set CE codepoint to communicate congestion
+ ip_packet->tos |= AUTOCLASS_TOS_ECN_CE;
+ // Tell flowRunner we modified the packet
+ packet->changed = 1;
+ }
+ }
}
-
+
}
// Check if we must pass the packet
@@ -327,6 +337,9 @@
// Copy packet
memcpy(packet->payload,m,pkt_len);
+ // Set packet as not changed
+ packet->changed = 0;
+
// Queue the packet...
status = queuePacket(runnerData,packet->payload->mark,packet);
if (status < 0)
Modified: trunk/include/autoclass.h
===================================================================
--- trunk/include/autoclass.h 2005-01-26 16:29:04 UTC (rev 65)
+++ trunk/include/autoclass.h 2005-01-30 16:03:38 UTC (rev 66)
@@ -35,6 +35,28 @@
#define AUTOCLASS_TOS 2
+// Type of Service / DSCP / ECN ... etc
+#define AUTOCLASS_TOS_ECN_MASK(tos) ((tos) & 0x03) // Mask of all ECN bits
+#define AUTOCLASS_TOS_ECN_ECT0 0x01
+#define AUTOCLASS_TOS_ECN_ECT1 0x02
+#define AUTOCLASS_TOS_ECN_CE 0x03
+
+#define AUTOCLASS_TOS_MASK(tos) ((tos) & 0x1c) // Mask of all TOS bits
+#define AUTOCLASS_TOS_RELIABILITY 0x04 // High Reliability
+#define AUTOCLASS_TOS_THROUGHPUT 0x08 // High Throughput
+#define AUTOCLASS_TOS_LOWDELAY 0x10 // Low Delay
+
+#define AUTOCLASS_TOS_PREC_MASK(tos) ((tos) & 0xe0) // Mask of all PREC bits
+#define AUTOCLASS_TOS_PREC_ROUTINE 0x00 // Routine
+#define AUTOCLASS_TOS_PREC_PRIORITY 0x20 // Priority
+#define AUTOCLASS_TOS_PREC_IMMEDIATE 0x40 // Immediate
+#define AUTOCLASS_TOS_PREC_FLASH 0x60 // Flash
+#define AUTOCLASS_TOS_PREC_FLASH_OVERRIDE 0x80 // Flash Override
+#define AUTOCLASS_TOS_PREC_CRITIC_ECP 0xa0 // Critic/ECP
+#define AUTOCLASS_TOS_PREC_INTERNETWORK_CONTROL 0xc0 // Internetwork control
+#define AUTOCLASS_TOS_PREC_NETWORK_CONTROL 0xe0 // Network control
+
+
// Auto classify packet and return priority (1 - best, 100 - worst)
unsigned char autoClassify(struct ip_packet_t *ip_packet, unsigned char prioClassifier);
Modified: trunk/include/common.h
===================================================================
--- trunk/include/common.h 2005-01-26 16:29:04 UTC (rev 65)
+++ trunk/include/common.h 2005-01-30 16:03:38 UTC (rev 66)
@@ -81,9 +81,11 @@
};
+// This is used in the queueing and is the item used in the queue
struct packet_t
{
ipq_packet_msg_t *payload;
+ unsigned char changed;
};
Modified: trunk/include/flow.h
===================================================================
--- trunk/include/flow.h 2005-01-26 16:29:04 UTC (rev 65)
+++ trunk/include/flow.h 2005-01-30 16:03:38 UTC (rev 66)
@@ -176,12 +176,14 @@
int pktBursted);
+// Message log facility
+void logMessage(int priority, const char *fmt, ...);
+
+
// Flow runner thread
void *flowRunner(void *data);
-
-
// Check if we will exceed flow queuing limits
static inline int will_exceed_flow_queue(struct flow_t *flow, unsigned int pktSize)
{
@@ -189,7 +191,5 @@
(flow->curQueueSize + pktSize >= flow->maxQueueSize && flow->maxQueueSize != 0));
}
-extern void logMessage(int priority, const char *fmt, ...);
-
#endif
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