1 /* Copyright (c) 2002-2009 InMon Corp. Licensed under the terms of the InMon sFlow licence: */
2 /* http://www.inmon.com/technology/sflowlicense.txt */
4 #ifndef __CHECKER__ /* Don't run sparse on anything in this file. */
9 static void resetSampleCollector(SFLReceiver
*receiver
);
10 static void sendSample(SFLReceiver
*receiver
);
11 static void sflError(SFLReceiver
*receiver
, char *errm
);
12 inline static void putNet32(SFLReceiver
*receiver
, u_int32_t val
);
13 inline static void putAddress(SFLReceiver
*receiver
, SFLAddress
*addr
);
14 #ifdef SFLOW_DO_SOCKET
15 static void initSocket(SFLReceiver
*receiver
);
18 /*_________________--------------------------__________________
19 _________________ sfl_receiver_init __________________
20 -----------------__________________________------------------
23 void sfl_receiver_init(SFLReceiver
*receiver
, SFLAgent
*agent
)
25 /* first clear everything */
26 memset(receiver
, 0, sizeof(*receiver
));
28 /* now copy in the parameters */
29 receiver
->agent
= agent
;
32 receiver
->sFlowRcvrMaximumDatagramSize
= SFL_DEFAULT_DATAGRAM_SIZE
;
33 receiver
->sFlowRcvrPort
= SFL_DEFAULT_COLLECTOR_PORT
;
35 #ifdef SFLOW_DO_SOCKET
36 /* initialize the socket address */
40 /* preset some of the header fields */
41 receiver
->sampleCollector
.datap
= receiver
->sampleCollector
.data
;
42 putNet32(receiver
, SFLDATAGRAM_VERSION5
);
43 putAddress(receiver
, &agent
->myIP
);
44 putNet32(receiver
, agent
->subId
);
46 /* prepare to receive the first sample */
47 resetSampleCollector(receiver
);
50 /*_________________---------------------------__________________
51 _________________ reset __________________
52 -----------------___________________________------------------
54 called on timeout, or when owner string is cleared
57 static void reset(SFLReceiver
*receiver
) {
58 // ask agent to tell samplers and pollers to stop sending samples
59 sfl_agent_resetReceiver(receiver
->agent
, receiver
);
61 sfl_receiver_init(receiver
, receiver
->agent
);
64 #ifdef SFLOW_DO_SOCKET
65 /*_________________---------------------------__________________
66 _________________ initSocket __________________
67 -----------------___________________________------------------
70 static void initSocket(SFLReceiver
*receiver
) {
71 if(receiver
->sFlowRcvrAddress
.type
== SFLADDRESSTYPE_IP_V6
) {
72 struct sockaddr_in6
*sa6
= &receiver
->receiver6
;
73 sa6
->sin6_port
= htons((u_int16_t
)receiver
->sFlowRcvrPort
);
74 sa6
->sin6_family
= AF_INET6
;
75 sa6
->sin6_addr
= receiver
->sFlowRcvrAddress
.address
.ip_v6
;
78 struct sockaddr_in
*sa4
= &receiver
->receiver4
;
79 sa4
->sin_port
= htons((u_int16_t
)receiver
->sFlowRcvrPort
);
80 sa4
->sin_family
= AF_INET
;
81 sa4
->sin_addr
= receiver
->sFlowRcvrAddress
.address
.ip_v4
;
86 /*_________________----------------------------------------_____________
87 _________________ MIB Vars _____________
88 -----------------________________________________________-------------
91 char * sfl_receiver_get_sFlowRcvrOwner(SFLReceiver
*receiver
) {
92 return receiver
->sFlowRcvrOwner
;
94 void sfl_receiver_set_sFlowRcvrOwner(SFLReceiver
*receiver
, char *sFlowRcvrOwner
) {
95 receiver
->sFlowRcvrOwner
= sFlowRcvrOwner
;
96 if(sFlowRcvrOwner
== NULL
|| sFlowRcvrOwner
[0] == '\0') {
97 // reset condition! owner string was cleared
101 time_t sfl_receiver_get_sFlowRcvrTimeout(SFLReceiver
*receiver
) {
102 return receiver
->sFlowRcvrTimeout
;
104 void sfl_receiver_set_sFlowRcvrTimeout(SFLReceiver
*receiver
, time_t sFlowRcvrTimeout
) {
105 receiver
->sFlowRcvrTimeout
=sFlowRcvrTimeout
;
107 u_int32_t
sfl_receiver_get_sFlowRcvrMaximumDatagramSize(SFLReceiver
*receiver
) {
108 return receiver
->sFlowRcvrMaximumDatagramSize
;
110 void sfl_receiver_set_sFlowRcvrMaximumDatagramSize(SFLReceiver
*receiver
, u_int32_t sFlowRcvrMaximumDatagramSize
) {
111 u_int32_t mdz
= sFlowRcvrMaximumDatagramSize
;
112 if(mdz
< SFL_MIN_DATAGRAM_SIZE
) mdz
= SFL_MIN_DATAGRAM_SIZE
;
113 receiver
->sFlowRcvrMaximumDatagramSize
= mdz
;
115 SFLAddress
*sfl_receiver_get_sFlowRcvrAddress(SFLReceiver
*receiver
) {
116 return &receiver
->sFlowRcvrAddress
;
118 void sfl_receiver_set_sFlowRcvrAddress(SFLReceiver
*receiver
, SFLAddress
*sFlowRcvrAddress
) {
119 if(sFlowRcvrAddress
) receiver
->sFlowRcvrAddress
= *sFlowRcvrAddress
; // structure copy
120 #ifdef SFLOW_DO_SOCKET
121 initSocket(receiver
);
124 u_int32_t
sfl_receiver_get_sFlowRcvrPort(SFLReceiver
*receiver
) {
125 return receiver
->sFlowRcvrPort
;
127 void sfl_receiver_set_sFlowRcvrPort(SFLReceiver
*receiver
, u_int32_t sFlowRcvrPort
) {
128 receiver
->sFlowRcvrPort
= sFlowRcvrPort
;
129 // update the socket structure
130 #ifdef SFLOW_DO_SOCKET
131 initSocket(receiver
);
135 /*_________________---------------------------__________________
136 _________________ sfl_receiver_tick __________________
137 -----------------___________________________------------------
140 void sfl_receiver_tick(SFLReceiver
*receiver
, time_t now
)
142 // if there are any samples to send, flush them now
143 if(receiver
->sampleCollector
.numSamples
> 0) sendSample(receiver
);
145 if(receiver
->sFlowRcvrTimeout
&& (u_int32_t
)receiver
->sFlowRcvrTimeout
!= 0xFFFFFFFF) {
146 // count down one tick and reset if we reach 0
147 if(--receiver
->sFlowRcvrTimeout
== 0) reset(receiver
);
151 /*_________________-----------------------------__________________
152 _________________ receiver write utilities __________________
153 -----------------_____________________________------------------
156 inline static void put32(SFLReceiver
*receiver
, u_int32_t val
)
158 *receiver
->sampleCollector
.datap
++ = val
;
161 inline static void putNet32(SFLReceiver
*receiver
, u_int32_t val
)
163 *receiver
->sampleCollector
.datap
++ = htonl(val
);
166 inline static void putNet32_run(SFLReceiver
*receiver
, void *obj
, size_t quads
)
168 u_int32_t
*from
= (u_int32_t
*)obj
;
169 while(quads
--) putNet32(receiver
, *from
++);
172 inline static void putNet64(SFLReceiver
*receiver
, u_int64_t val64
)
174 u_int32_t
*firstQuadPtr
= receiver
->sampleCollector
.datap
;
175 // first copy the bytes in
176 memcpy((u_char
*)firstQuadPtr
, &val64
, 8);
178 // swap the bytes, and reverse the quads too
179 u_int32_t tmp
= *receiver
->sampleCollector
.datap
++;
180 *firstQuadPtr
= htonl(*receiver
->sampleCollector
.datap
);
181 *receiver
->sampleCollector
.datap
++ = htonl(tmp
);
183 else receiver
->sampleCollector
.datap
+= 2;
186 inline static void put128(SFLReceiver
*receiver
, u_char
*val
)
188 memcpy(receiver
->sampleCollector
.datap
, val
, 16);
189 receiver
->sampleCollector
.datap
+= 4;
192 inline static void putString(SFLReceiver
*receiver
, SFLString
*s
)
194 putNet32(receiver
, s
->len
);
195 memcpy(receiver
->sampleCollector
.datap
, s
->str
, s
->len
);
196 receiver
->sampleCollector
.datap
+= (s
->len
+ 3) / 4; /* pad to 4-byte boundary */
199 inline static u_int32_t
stringEncodingLength(SFLString
*s
) {
200 // answer in bytes, so remember to mulitply by 4 after rounding up to nearest 4-byte boundary
201 return 4 + (((s
->len
+ 3) / 4) * 4);
204 inline static void putAddress(SFLReceiver
*receiver
, SFLAddress
*addr
)
206 // encode unspecified addresses as IPV4:0.0.0.0 - or should we flag this as an error?
207 if(addr
->type
== 0) {
208 putNet32(receiver
, SFLADDRESSTYPE_IP_V4
);
212 putNet32(receiver
, addr
->type
);
213 if(addr
->type
== SFLADDRESSTYPE_IP_V4
) put32(receiver
, addr
->address
.ip_v4
.addr
);
214 else put128(receiver
, addr
->address
.ip_v6
.addr
);
218 inline static u_int32_t
addressEncodingLength(SFLAddress
*addr
) {
219 return (addr
->type
== SFLADDRESSTYPE_IP_V6
) ? 20 : 8; // type + address (unspecified == IPV4)
222 inline static void putMACAddress(SFLReceiver
*receiver
, u_int8_t
*mac
)
224 memcpy(receiver
->sampleCollector
.datap
, mac
, 6);
225 receiver
->sampleCollector
.datap
+= 2;
228 inline static void putSwitch(SFLReceiver
*receiver
, SFLExtended_switch
*sw
)
230 putNet32(receiver
, sw
->src_vlan
);
231 putNet32(receiver
, sw
->src_priority
);
232 putNet32(receiver
, sw
->dst_vlan
);
233 putNet32(receiver
, sw
->dst_priority
);
236 inline static void putRouter(SFLReceiver
*receiver
, SFLExtended_router
*router
)
238 putAddress(receiver
, &router
->nexthop
);
239 putNet32(receiver
, router
->src_mask
);
240 putNet32(receiver
, router
->dst_mask
);
243 inline static u_int32_t
routerEncodingLength(SFLExtended_router
*router
) {
244 return addressEncodingLength(&router
->nexthop
) + 8;
247 inline static void putGateway(SFLReceiver
*receiver
, SFLExtended_gateway
*gw
)
249 putAddress(receiver
, &gw
->nexthop
);
250 putNet32(receiver
, gw
->as
);
251 putNet32(receiver
, gw
->src_as
);
252 putNet32(receiver
, gw
->src_peer_as
);
253 putNet32(receiver
, gw
->dst_as_path_segments
);
256 for(; seg
< gw
->dst_as_path_segments
; seg
++) {
257 putNet32(receiver
, gw
->dst_as_path
[seg
].type
);
258 putNet32(receiver
, gw
->dst_as_path
[seg
].length
);
259 putNet32_run(receiver
, gw
->dst_as_path
[seg
].as
.seq
, gw
->dst_as_path
[seg
].length
);
262 putNet32(receiver
, gw
->communities_length
);
263 putNet32_run(receiver
, gw
->communities
, gw
->communities_length
);
264 putNet32(receiver
, gw
->localpref
);
267 inline static u_int32_t
gatewayEncodingLength(SFLExtended_gateway
*gw
) {
268 u_int32_t elemSiz
= addressEncodingLength(&gw
->nexthop
);
270 elemSiz
+= 16; // as, src_as, src_peer_as, dst_as_path_segments
271 for(; seg
< gw
->dst_as_path_segments
; seg
++) {
272 elemSiz
+= 8; // type, length
273 elemSiz
+= 4 * gw
->dst_as_path
[seg
].length
; // set/seq bytes
275 elemSiz
+= 4; // communities_length
276 elemSiz
+= 4 * gw
->communities_length
; // communities
277 elemSiz
+= 4; // localpref
281 inline static void putUser(SFLReceiver
*receiver
, SFLExtended_user
*user
)
283 putNet32(receiver
, user
->src_charset
);
284 putString(receiver
, &user
->src_user
);
285 putNet32(receiver
, user
->dst_charset
);
286 putString(receiver
, &user
->dst_user
);
289 inline static u_int32_t
userEncodingLength(SFLExtended_user
*user
) {
291 + stringEncodingLength(&user
->src_user
)
293 + stringEncodingLength(&user
->dst_user
);
296 inline static void putUrl(SFLReceiver
*receiver
, SFLExtended_url
*url
)
298 putNet32(receiver
, url
->direction
);
299 putString(receiver
, &url
->url
);
300 putString(receiver
, &url
->host
);
303 inline static u_int32_t
urlEncodingLength(SFLExtended_url
*url
) {
305 + stringEncodingLength(&url
->url
)
306 + stringEncodingLength(&url
->host
);
309 inline static void putLabelStack(SFLReceiver
*receiver
, SFLLabelStack
*labelStack
)
311 putNet32(receiver
, labelStack
->depth
);
312 putNet32_run(receiver
, labelStack
->stack
, labelStack
->depth
);
315 inline static u_int32_t
labelStackEncodingLength(SFLLabelStack
*labelStack
) {
316 return 4 + (4 * labelStack
->depth
);
319 inline static void putMpls(SFLReceiver
*receiver
, SFLExtended_mpls
*mpls
)
321 putAddress(receiver
, &mpls
->nextHop
);
322 putLabelStack(receiver
, &mpls
->in_stack
);
323 putLabelStack(receiver
, &mpls
->out_stack
);
326 inline static u_int32_t
mplsEncodingLength(SFLExtended_mpls
*mpls
) {
327 return addressEncodingLength(&mpls
->nextHop
)
328 + labelStackEncodingLength(&mpls
->in_stack
)
329 + labelStackEncodingLength(&mpls
->out_stack
);
332 inline static void putNat(SFLReceiver
*receiver
, SFLExtended_nat
*nat
)
334 putAddress(receiver
, &nat
->src
);
335 putAddress(receiver
, &nat
->dst
);
338 inline static u_int32_t
natEncodingLength(SFLExtended_nat
*nat
) {
339 return addressEncodingLength(&nat
->src
)
340 + addressEncodingLength(&nat
->dst
);
343 inline static void putMplsTunnel(SFLReceiver
*receiver
, SFLExtended_mpls_tunnel
*tunnel
)
345 putString(receiver
, &tunnel
->tunnel_lsp_name
);
346 putNet32(receiver
, tunnel
->tunnel_id
);
347 putNet32(receiver
, tunnel
->tunnel_cos
);
350 inline static u_int32_t
mplsTunnelEncodingLength(SFLExtended_mpls_tunnel
*tunnel
) {
351 return stringEncodingLength(&tunnel
->tunnel_lsp_name
) + 8;
354 inline static void putMplsVc(SFLReceiver
*receiver
, SFLExtended_mpls_vc
*vc
)
356 putString(receiver
, &vc
->vc_instance_name
);
357 putNet32(receiver
, vc
->vll_vc_id
);
358 putNet32(receiver
, vc
->vc_label_cos
);
361 inline static u_int32_t
mplsVcEncodingLength(SFLExtended_mpls_vc
*vc
) {
362 return stringEncodingLength( &vc
->vc_instance_name
) + 8;
365 inline static void putMplsFtn(SFLReceiver
*receiver
, SFLExtended_mpls_FTN
*ftn
)
367 putString(receiver
, &ftn
->mplsFTNDescr
);
368 putNet32(receiver
, ftn
->mplsFTNMask
);
371 inline static u_int32_t
mplsFtnEncodingLength(SFLExtended_mpls_FTN
*ftn
) {
372 return stringEncodingLength( &ftn
->mplsFTNDescr
) + 4;
375 inline static void putMplsLdpFec(SFLReceiver
*receiver
, SFLExtended_mpls_LDP_FEC
*ldpfec
)
377 putNet32(receiver
, ldpfec
->mplsFecAddrPrefixLength
);
380 inline static u_int32_t
mplsLdpFecEncodingLength(SFLExtended_mpls_LDP_FEC
*ldpfec
) {
384 inline static void putVlanTunnel(SFLReceiver
*receiver
, SFLExtended_vlan_tunnel
*vlanTunnel
)
386 putLabelStack(receiver
, &vlanTunnel
->stack
);
389 inline static u_int32_t
vlanTunnelEncodingLength(SFLExtended_vlan_tunnel
*vlanTunnel
) {
390 return labelStackEncodingLength(&vlanTunnel
->stack
);
394 inline static void putGenericCounters(SFLReceiver
*receiver
, SFLIf_counters
*counters
)
396 putNet32(receiver
, counters
->ifIndex
);
397 putNet32(receiver
, counters
->ifType
);
398 putNet64(receiver
, counters
->ifSpeed
);
399 putNet32(receiver
, counters
->ifDirection
);
400 putNet32(receiver
, counters
->ifStatus
);
401 putNet64(receiver
, counters
->ifInOctets
);
402 putNet32(receiver
, counters
->ifInUcastPkts
);
403 putNet32(receiver
, counters
->ifInMulticastPkts
);
404 putNet32(receiver
, counters
->ifInBroadcastPkts
);
405 putNet32(receiver
, counters
->ifInDiscards
);
406 putNet32(receiver
, counters
->ifInErrors
);
407 putNet32(receiver
, counters
->ifInUnknownProtos
);
408 putNet64(receiver
, counters
->ifOutOctets
);
409 putNet32(receiver
, counters
->ifOutUcastPkts
);
410 putNet32(receiver
, counters
->ifOutMulticastPkts
);
411 putNet32(receiver
, counters
->ifOutBroadcastPkts
);
412 putNet32(receiver
, counters
->ifOutDiscards
);
413 putNet32(receiver
, counters
->ifOutErrors
);
414 putNet32(receiver
, counters
->ifPromiscuousMode
);
418 /*_________________-----------------------------__________________
419 _________________ computeFlowSampleSize __________________
420 -----------------_____________________________------------------
423 static int computeFlowSampleSize(SFLReceiver
*receiver
, SFL_FLOW_SAMPLE_TYPE
*fs
)
425 SFLFlow_sample_element
*elem
= fs
->elements
;
426 #ifdef SFL_USE_32BIT_INDEX
427 u_int siz
= 52; /* tag, length, sequence_number, ds_class, ds_index, sampling_rate,
428 sample_pool, drops, inputFormat, input, outputFormat, output, number of elements */
430 u_int siz
= 40; /* tag, length, sequence_number, source_id, sampling_rate,
431 sample_pool, drops, input, output, number of elements */
434 fs
->num_elements
= 0; /* we're going to count them again even if this was set by the client */
435 for(; elem
!= NULL
; elem
= elem
->nxt
) {
438 siz
+= 8; /* tag, length */
441 elemSiz
= 16; /* header_protocol, frame_length, stripped, header_length */
442 elemSiz
+= ((elem
->flowType
.header
.header_length
+ 3) / 4) * 4; /* header, rounded up to nearest 4 bytes */
444 case SFLFLOW_ETHERNET
: elemSiz
= sizeof(SFLSampled_ethernet
); break;
445 case SFLFLOW_IPV4
: elemSiz
= sizeof(SFLSampled_ipv4
); break;
446 case SFLFLOW_IPV6
: elemSiz
= sizeof(SFLSampled_ipv6
); break;
447 case SFLFLOW_EX_SWITCH
: elemSiz
= sizeof(SFLExtended_switch
); break;
448 case SFLFLOW_EX_ROUTER
: elemSiz
= routerEncodingLength(&elem
->flowType
.router
); break;
449 case SFLFLOW_EX_GATEWAY
: elemSiz
= gatewayEncodingLength(&elem
->flowType
.gateway
); break;
450 case SFLFLOW_EX_USER
: elemSiz
= userEncodingLength(&elem
->flowType
.user
); break;
451 case SFLFLOW_EX_URL
: elemSiz
= urlEncodingLength(&elem
->flowType
.url
); break;
452 case SFLFLOW_EX_MPLS
: elemSiz
= mplsEncodingLength(&elem
->flowType
.mpls
); break;
453 case SFLFLOW_EX_NAT
: elemSiz
= natEncodingLength(&elem
->flowType
.nat
); break;
454 case SFLFLOW_EX_MPLS_TUNNEL
: elemSiz
= mplsTunnelEncodingLength(&elem
->flowType
.mpls_tunnel
); break;
455 case SFLFLOW_EX_MPLS_VC
: elemSiz
= mplsVcEncodingLength(&elem
->flowType
.mpls_vc
); break;
456 case SFLFLOW_EX_MPLS_FTN
: elemSiz
= mplsFtnEncodingLength(&elem
->flowType
.mpls_ftn
); break;
457 case SFLFLOW_EX_MPLS_LDP_FEC
: elemSiz
= mplsLdpFecEncodingLength(&elem
->flowType
.mpls_ldp_fec
); break;
458 case SFLFLOW_EX_VLAN_TUNNEL
: elemSiz
= vlanTunnelEncodingLength(&elem
->flowType
.vlan_tunnel
); break;
460 sflError(receiver
, "unexpected packet_data_tag");
464 // cache the element size, and accumulate it into the overall FlowSample size
465 elem
->length
= elemSiz
;
472 /*_________________-------------------------------__________________
473 _________________ sfl_receiver_writeFlowSample __________________
474 -----------------_______________________________------------------
477 int sfl_receiver_writeFlowSample(SFLReceiver
*receiver
, SFL_FLOW_SAMPLE_TYPE
*fs
)
480 if(fs
== NULL
) return -1;
481 if((packedSize
= computeFlowSampleSize(receiver
, fs
)) == -1) return -1;
483 // check in case this one sample alone is too big for the datagram
484 // in fact - if it is even half as big then we should ditch it. Very
485 // important to avoid overruning the packet buffer.
486 if(packedSize
> (int)(receiver
->sFlowRcvrMaximumDatagramSize
/ 2)) {
487 sflError(receiver
, "flow sample too big for datagram");
491 // if the sample pkt is full enough so that this sample might put
492 // it over the limit, then we should send it now before going on.
493 if((receiver
->sampleCollector
.pktlen
+ packedSize
) >= receiver
->sFlowRcvrMaximumDatagramSize
)
494 sendSample(receiver
);
496 receiver
->sampleCollector
.numSamples
++;
498 #ifdef SFL_USE_32BIT_INDEX
499 putNet32(receiver
, SFLFLOW_SAMPLE_EXPANDED
);
501 putNet32(receiver
, SFLFLOW_SAMPLE
);
504 putNet32(receiver
, packedSize
- 8); // don't include tag and len
505 putNet32(receiver
, fs
->sequence_number
);
507 #ifdef SFL_USE_32BIT_INDEX
508 putNet32(receiver
, fs
->ds_class
);
509 putNet32(receiver
, fs
->ds_index
);
511 putNet32(receiver
, fs
->source_id
);
514 putNet32(receiver
, fs
->sampling_rate
);
515 putNet32(receiver
, fs
->sample_pool
);
516 putNet32(receiver
, fs
->drops
);
518 #ifdef SFL_USE_32BIT_INDEX
519 putNet32(receiver
, fs
->inputFormat
);
520 putNet32(receiver
, fs
->input
);
521 putNet32(receiver
, fs
->outputFormat
);
522 putNet32(receiver
, fs
->output
);
524 putNet32(receiver
, fs
->input
);
525 putNet32(receiver
, fs
->output
);
528 putNet32(receiver
, fs
->num_elements
);
531 SFLFlow_sample_element
*elem
= fs
->elements
;
532 for(; elem
!= NULL
; elem
= elem
->nxt
) {
534 putNet32(receiver
, elem
->tag
);
535 putNet32(receiver
, elem
->length
); // length cached in computeFlowSampleSize()
539 putNet32(receiver
, elem
->flowType
.header
.header_protocol
);
540 putNet32(receiver
, elem
->flowType
.header
.frame_length
);
541 putNet32(receiver
, elem
->flowType
.header
.stripped
);
542 putNet32(receiver
, elem
->flowType
.header
.header_length
);
544 memcpy(receiver
->sampleCollector
.datap
, elem
->flowType
.header
.header_bytes
, elem
->flowType
.header
.header_length
);
545 /* round up to multiple of 4 to preserve alignment */
546 receiver
->sampleCollector
.datap
+= ((elem
->flowType
.header
.header_length
+ 3) / 4);
548 case SFLFLOW_ETHERNET
:
549 putNet32(receiver
, elem
->flowType
.ethernet
.eth_len
);
550 putMACAddress(receiver
, elem
->flowType
.ethernet
.src_mac
);
551 putMACAddress(receiver
, elem
->flowType
.ethernet
.dst_mac
);
552 putNet32(receiver
, elem
->flowType
.ethernet
.eth_type
);
555 putNet32(receiver
, elem
->flowType
.ipv4
.length
);
556 putNet32(receiver
, elem
->flowType
.ipv4
.protocol
);
557 put32(receiver
, elem
->flowType
.ipv4
.src_ip
.addr
);
558 put32(receiver
, elem
->flowType
.ipv4
.dst_ip
.addr
);
559 putNet32(receiver
, elem
->flowType
.ipv4
.src_port
);
560 putNet32(receiver
, elem
->flowType
.ipv4
.dst_port
);
561 putNet32(receiver
, elem
->flowType
.ipv4
.tcp_flags
);
562 putNet32(receiver
, elem
->flowType
.ipv4
.tos
);
565 putNet32(receiver
, elem
->flowType
.ipv6
.length
);
566 putNet32(receiver
, elem
->flowType
.ipv6
.protocol
);
567 put128(receiver
, elem
->flowType
.ipv6
.src_ip
.addr
);
568 put128(receiver
, elem
->flowType
.ipv6
.dst_ip
.addr
);
569 putNet32(receiver
, elem
->flowType
.ipv6
.src_port
);
570 putNet32(receiver
, elem
->flowType
.ipv6
.dst_port
);
571 putNet32(receiver
, elem
->flowType
.ipv6
.tcp_flags
);
572 putNet32(receiver
, elem
->flowType
.ipv6
.priority
);
574 case SFLFLOW_EX_SWITCH
: putSwitch(receiver
, &elem
->flowType
.sw
); break;
575 case SFLFLOW_EX_ROUTER
: putRouter(receiver
, &elem
->flowType
.router
); break;
576 case SFLFLOW_EX_GATEWAY
: putGateway(receiver
, &elem
->flowType
.gateway
); break;
577 case SFLFLOW_EX_USER
: putUser(receiver
, &elem
->flowType
.user
); break;
578 case SFLFLOW_EX_URL
: putUrl(receiver
, &elem
->flowType
.url
); break;
579 case SFLFLOW_EX_MPLS
: putMpls(receiver
, &elem
->flowType
.mpls
); break;
580 case SFLFLOW_EX_NAT
: putNat(receiver
, &elem
->flowType
.nat
); break;
581 case SFLFLOW_EX_MPLS_TUNNEL
: putMplsTunnel(receiver
, &elem
->flowType
.mpls_tunnel
); break;
582 case SFLFLOW_EX_MPLS_VC
: putMplsVc(receiver
, &elem
->flowType
.mpls_vc
); break;
583 case SFLFLOW_EX_MPLS_FTN
: putMplsFtn(receiver
, &elem
->flowType
.mpls_ftn
); break;
584 case SFLFLOW_EX_MPLS_LDP_FEC
: putMplsLdpFec(receiver
, &elem
->flowType
.mpls_ldp_fec
); break;
585 case SFLFLOW_EX_VLAN_TUNNEL
: putVlanTunnel(receiver
, &elem
->flowType
.vlan_tunnel
); break;
587 sflError(receiver
, "unexpected packet_data_tag");
595 assert(((u_char
*)receiver
->sampleCollector
.datap
596 - (u_char
*)receiver
->sampleCollector
.data
597 - receiver
->sampleCollector
.pktlen
) == (u_int32_t
)packedSize
);
600 receiver
->sampleCollector
.pktlen
= (u_char
*)receiver
->sampleCollector
.datap
- (u_char
*)receiver
->sampleCollector
.data
;
604 /*_________________-----------------------------__________________
605 _________________ computeCountersSampleSize __________________
606 -----------------_____________________________------------------
609 static int computeCountersSampleSize(SFLReceiver
*receiver
, SFL_COUNTERS_SAMPLE_TYPE
*cs
)
611 SFLCounters_sample_element
*elem
= cs
->elements
;
612 #ifdef SFL_USE_32BIT_INDEX
613 u_int siz
= 24; /* tag, length, sequence_number, ds_class, ds_index, number of elements */
615 u_int siz
= 20; /* tag, length, sequence_number, source_id, number of elements */
618 cs
->num_elements
= 0; /* we're going to count them again even if this was set by the client */
619 for(; elem
!= NULL
; elem
= elem
->nxt
) {
622 siz
+= 8; /* tag, length */
624 case SFLCOUNTERS_GENERIC
: elemSiz
= sizeof(elem
->counterBlock
.generic
); break;
625 case SFLCOUNTERS_ETHERNET
: elemSiz
= sizeof(elem
->counterBlock
.ethernet
); break;
626 case SFLCOUNTERS_TOKENRING
: elemSiz
= sizeof(elem
->counterBlock
.tokenring
); break;
627 case SFLCOUNTERS_VG
: elemSiz
= sizeof(elem
->counterBlock
.vg
); break;
628 case SFLCOUNTERS_VLAN
: elemSiz
= sizeof(elem
->counterBlock
.vlan
); break;
630 sflError(receiver
, "unexpected counters_tag");
634 // cache the element size, and accumulate it into the overall FlowSample size
635 elem
->length
= elemSiz
;
641 /*_________________----------------------------------__________________
642 _________________ sfl_receiver_writeCountersSample __________________
643 -----------------__________________________________------------------
646 int sfl_receiver_writeCountersSample(SFLReceiver
*receiver
, SFL_COUNTERS_SAMPLE_TYPE
*cs
)
649 if(cs
== NULL
) return -1;
650 // if the sample pkt is full enough so that this sample might put
651 // it over the limit, then we should send it now.
652 if((packedSize
= computeCountersSampleSize(receiver
, cs
)) == -1) return -1;
654 // check in case this one sample alone is too big for the datagram
655 // in fact - if it is even half as big then we should ditch it. Very
656 // important to avoid overruning the packet buffer.
657 if(packedSize
> (int)(receiver
->sFlowRcvrMaximumDatagramSize
/ 2)) {
658 sflError(receiver
, "counters sample too big for datagram");
662 if((receiver
->sampleCollector
.pktlen
+ packedSize
) >= receiver
->sFlowRcvrMaximumDatagramSize
)
663 sendSample(receiver
);
665 receiver
->sampleCollector
.numSamples
++;
667 #ifdef SFL_USE_32BIT_INDEX
668 putNet32(receiver
, SFLCOUNTERS_SAMPLE_EXPANDED
);
670 putNet32(receiver
, SFLCOUNTERS_SAMPLE
);
673 putNet32(receiver
, packedSize
- 8); // tag and length not included
674 putNet32(receiver
, cs
->sequence_number
);
676 #ifdef SFL_USE_32BIT_INDEX
677 putNet32(receiver
, cs
->ds_class
);
678 putNet32(receiver
, cs
->ds_index
);
680 putNet32(receiver
, cs
->source_id
);
683 putNet32(receiver
, cs
->num_elements
);
686 SFLCounters_sample_element
*elem
= cs
->elements
;
687 for(; elem
!= NULL
; elem
= elem
->nxt
) {
689 putNet32(receiver
, elem
->tag
);
690 putNet32(receiver
, elem
->length
); // length cached in computeCountersSampleSize()
693 case SFLCOUNTERS_GENERIC
:
694 putGenericCounters(receiver
, &(elem
->counterBlock
.generic
));
696 case SFLCOUNTERS_ETHERNET
:
697 // all these counters are 32-bit
698 putNet32_run(receiver
, &elem
->counterBlock
.ethernet
, sizeof(elem
->counterBlock
.ethernet
) / 4);
700 case SFLCOUNTERS_TOKENRING
:
701 // all these counters are 32-bit
702 putNet32_run(receiver
, &elem
->counterBlock
.tokenring
, sizeof(elem
->counterBlock
.tokenring
) / 4);
706 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InHighPriorityFrames
);
707 putNet64(receiver
, elem
->counterBlock
.vg
.dot12InHighPriorityOctets
);
708 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InNormPriorityFrames
);
709 putNet64(receiver
, elem
->counterBlock
.vg
.dot12InNormPriorityOctets
);
710 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InIPMErrors
);
711 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InOversizeFrameErrors
);
712 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InDataErrors
);
713 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InNullAddressedFrames
);
714 putNet32(receiver
, elem
->counterBlock
.vg
.dot12OutHighPriorityFrames
);
715 putNet64(receiver
, elem
->counterBlock
.vg
.dot12OutHighPriorityOctets
);
716 putNet32(receiver
, elem
->counterBlock
.vg
.dot12TransitionIntoTrainings
);
717 putNet64(receiver
, elem
->counterBlock
.vg
.dot12HCInHighPriorityOctets
);
718 putNet64(receiver
, elem
->counterBlock
.vg
.dot12HCInNormPriorityOctets
);
719 putNet64(receiver
, elem
->counterBlock
.vg
.dot12HCOutHighPriorityOctets
);
721 case SFLCOUNTERS_VLAN
:
723 putNet32(receiver
, elem
->counterBlock
.vlan
.vlan_id
);
724 putNet64(receiver
, elem
->counterBlock
.vlan
.octets
);
725 putNet32(receiver
, elem
->counterBlock
.vlan
.ucastPkts
);
726 putNet32(receiver
, elem
->counterBlock
.vlan
.multicastPkts
);
727 putNet32(receiver
, elem
->counterBlock
.vlan
.broadcastPkts
);
728 putNet32(receiver
, elem
->counterBlock
.vlan
.discards
);
731 sflError(receiver
, "unexpected counters_tag");
738 assert(((u_char
*)receiver
->sampleCollector
.datap
739 - (u_char
*)receiver
->sampleCollector
.data
740 - receiver
->sampleCollector
.pktlen
) == (u_int32_t
)packedSize
);
743 receiver
->sampleCollector
.pktlen
= (u_char
*)receiver
->sampleCollector
.datap
- (u_char
*)receiver
->sampleCollector
.data
;
747 /*_________________---------------------------------__________________
748 _________________ sfl_receiver_samplePacketsSent __________________
749 -----------------_________________________________------------------
752 u_int32_t
sfl_receiver_samplePacketsSent(SFLReceiver
*receiver
)
754 return receiver
->sampleCollector
.packetSeqNo
;
757 /*_________________---------------------------__________________
758 _________________ sendSample __________________
759 -----------------___________________________------------------
762 static void sendSample(SFLReceiver
*receiver
)
764 /* construct and send out the sample, then reset for the next one... */
765 /* first fill in the header with the latest values */
766 /* version, agent_address and sub_agent_id were pre-set. */
767 u_int32_t hdrIdx
= (receiver
->agent
->myIP
.type
== SFLADDRESSTYPE_IP_V6
) ? 7 : 4;
768 receiver
->sampleCollector
.data
[hdrIdx
++] = htonl(++receiver
->sampleCollector
.packetSeqNo
); /* seq no */
769 receiver
->sampleCollector
.data
[hdrIdx
++] = htonl((receiver
->agent
->now
- receiver
->agent
->bootTime
) * 1000); /* uptime */
770 receiver
->sampleCollector
.data
[hdrIdx
++] = htonl(receiver
->sampleCollector
.numSamples
); /* num samples */
772 if(receiver
->agent
->sendFn
) (*receiver
->agent
->sendFn
)(receiver
->agent
->magic
,
775 (u_char
*)receiver
->sampleCollector
.data
,
776 receiver
->sampleCollector
.pktlen
);
778 #ifdef SFLOW_DO_SOCKET
780 if (receiver
->sFlowRcvrAddress
.type
== SFLADDRESSTYPE_IP_V6
) {
781 u_int32_t soclen
= sizeof(struct sockaddr_in6
);
782 int result
= sendto(receiver
->agent
->receiverSocket6
,
783 receiver
->sampleCollector
.data
,
784 receiver
->sampleCollector
.pktlen
,
786 (struct sockaddr
*)&receiver
->receiver6
,
788 if(result
== -1 && errno
!= EINTR
) sfl_agent_sysError(receiver
->agent
, "receiver", "IPv6 socket sendto error");
789 if(result
== 0) sfl_agent_error(receiver
->agent
, "receiver", "IPv6 socket sendto returned 0");
792 u_int32_t soclen
= sizeof(struct sockaddr_in
);
793 int result
= sendto(receiver
->agent
->receiverSocket4
,
794 receiver
->sampleCollector
.data
,
795 receiver
->sampleCollector
.pktlen
,
797 (struct sockaddr
*)&receiver
->receiver4
,
799 if(result
== -1 && errno
!= EINTR
) sfl_agent_sysError(receiver
->agent
, "receiver", "socket sendto error");
800 if(result
== 0) sfl_agent_error(receiver
->agent
, "receiver", "socket sendto returned 0");
805 /* reset for the next time */
806 resetSampleCollector(receiver
);
809 /*_________________---------------------------__________________
810 _________________ resetSampleCollector __________________
811 -----------------___________________________------------------
814 static void resetSampleCollector(SFLReceiver
*receiver
)
816 receiver
->sampleCollector
.pktlen
= 0;
817 receiver
->sampleCollector
.numSamples
= 0;
818 /* point the datap to just after the header */
819 receiver
->sampleCollector
.datap
= (receiver
->agent
->myIP
.type
== SFLADDRESSTYPE_IP_V6
) ?
820 (receiver
->sampleCollector
.data
+ 10) : (receiver
->sampleCollector
.data
+ 7);
822 receiver
->sampleCollector
.pktlen
= (u_char
*)receiver
->sampleCollector
.datap
- (u_char
*)receiver
->sampleCollector
.data
;
825 /*_________________---------------------------__________________
826 _________________ sflError __________________
827 -----------------___________________________------------------
830 static void sflError(SFLReceiver
*receiver
, char *msg
)
832 sfl_agent_error(receiver
->agent
, "receiver", msg
);
833 resetSampleCollector(receiver
);
836 #endif /* !__CHECKER__ */