1 /* Copyright (c) 2002-2009 InMon Corp. Licensed under the terms of either the
2 * Sun Industry Standards Source License 1.1, that is available at:
3 * http://host-sflow.sourceforge.net/sissl.html
4 * or the InMon sFlow License, that is available at:
5 * http://www.inmon.com/technology/sflowlicense.txt
8 #ifndef __CHECKER__ /* Don't run sparse on anything in this file. */
11 #include "sflow_api.h"
13 static void resetSampleCollector(SFLReceiver
*receiver
);
14 static void sendSample(SFLReceiver
*receiver
);
15 static void sflError(SFLReceiver
*receiver
, char *errm
);
16 inline static void putNet32(SFLReceiver
*receiver
, u_int32_t val
);
17 inline static void putAddress(SFLReceiver
*receiver
, SFLAddress
*addr
);
18 #ifdef SFLOW_DO_SOCKET
19 static void initSocket(SFLReceiver
*receiver
);
22 /*_________________--------------------------__________________
23 _________________ sfl_receiver_init __________________
24 -----------------__________________________------------------
27 void sfl_receiver_init(SFLReceiver
*receiver
, SFLAgent
*agent
)
29 /* first clear everything */
30 memset(receiver
, 0, sizeof(*receiver
));
32 /* now copy in the parameters */
33 receiver
->agent
= agent
;
36 receiver
->sFlowRcvrMaximumDatagramSize
= SFL_DEFAULT_DATAGRAM_SIZE
;
37 receiver
->sFlowRcvrPort
= SFL_DEFAULT_COLLECTOR_PORT
;
39 #ifdef SFLOW_DO_SOCKET
40 /* initialize the socket address */
44 /* preset some of the header fields */
45 receiver
->sampleCollector
.datap
= receiver
->sampleCollector
.data
;
46 putNet32(receiver
, SFLDATAGRAM_VERSION5
);
47 putAddress(receiver
, &agent
->myIP
);
48 putNet32(receiver
, agent
->subId
);
50 /* prepare to receive the first sample */
51 resetSampleCollector(receiver
);
54 /*_________________---------------------------__________________
55 _________________ reset __________________
56 -----------------___________________________------------------
58 called on timeout, or when owner string is cleared
61 static void reset(SFLReceiver
*receiver
) {
62 // ask agent to tell samplers and pollers to stop sending samples
63 sfl_agent_resetReceiver(receiver
->agent
, receiver
);
65 sfl_receiver_init(receiver
, receiver
->agent
);
68 #ifdef SFLOW_DO_SOCKET
69 /*_________________---------------------------__________________
70 _________________ initSocket __________________
71 -----------------___________________________------------------
74 static void initSocket(SFLReceiver
*receiver
) {
75 if(receiver
->sFlowRcvrAddress
.type
== SFLADDRESSTYPE_IP_V6
) {
76 struct sockaddr_in6
*sa6
= &receiver
->receiver6
;
77 sa6
->sin6_port
= htons((u_int16_t
)receiver
->sFlowRcvrPort
);
78 sa6
->sin6_family
= AF_INET6
;
79 sa6
->sin6_addr
= receiver
->sFlowRcvrAddress
.address
.ip_v6
;
82 struct sockaddr_in
*sa4
= &receiver
->receiver4
;
83 sa4
->sin_port
= htons((u_int16_t
)receiver
->sFlowRcvrPort
);
84 sa4
->sin_family
= AF_INET
;
85 sa4
->sin_addr
= receiver
->sFlowRcvrAddress
.address
.ip_v4
;
90 /*_________________----------------------------------------_____________
91 _________________ MIB Vars _____________
92 -----------------________________________________________-------------
95 char * sfl_receiver_get_sFlowRcvrOwner(SFLReceiver
*receiver
) {
96 return receiver
->sFlowRcvrOwner
;
98 void sfl_receiver_set_sFlowRcvrOwner(SFLReceiver
*receiver
, char *sFlowRcvrOwner
) {
99 receiver
->sFlowRcvrOwner
= sFlowRcvrOwner
;
100 if(sFlowRcvrOwner
== NULL
|| sFlowRcvrOwner
[0] == '\0') {
101 // reset condition! owner string was cleared
105 time_t sfl_receiver_get_sFlowRcvrTimeout(SFLReceiver
*receiver
) {
106 return receiver
->sFlowRcvrTimeout
;
108 void sfl_receiver_set_sFlowRcvrTimeout(SFLReceiver
*receiver
, time_t sFlowRcvrTimeout
) {
109 receiver
->sFlowRcvrTimeout
=sFlowRcvrTimeout
;
111 u_int32_t
sfl_receiver_get_sFlowRcvrMaximumDatagramSize(SFLReceiver
*receiver
) {
112 return receiver
->sFlowRcvrMaximumDatagramSize
;
114 void sfl_receiver_set_sFlowRcvrMaximumDatagramSize(SFLReceiver
*receiver
, u_int32_t sFlowRcvrMaximumDatagramSize
) {
115 u_int32_t mdz
= sFlowRcvrMaximumDatagramSize
;
116 if(mdz
< SFL_MIN_DATAGRAM_SIZE
) mdz
= SFL_MIN_DATAGRAM_SIZE
;
117 receiver
->sFlowRcvrMaximumDatagramSize
= mdz
;
119 SFLAddress
*sfl_receiver_get_sFlowRcvrAddress(SFLReceiver
*receiver
) {
120 return &receiver
->sFlowRcvrAddress
;
122 void sfl_receiver_set_sFlowRcvrAddress(SFLReceiver
*receiver
, SFLAddress
*sFlowRcvrAddress
) {
123 if(sFlowRcvrAddress
) receiver
->sFlowRcvrAddress
= *sFlowRcvrAddress
; // structure copy
124 #ifdef SFLOW_DO_SOCKET
125 initSocket(receiver
);
128 u_int32_t
sfl_receiver_get_sFlowRcvrPort(SFLReceiver
*receiver
) {
129 return receiver
->sFlowRcvrPort
;
131 void sfl_receiver_set_sFlowRcvrPort(SFLReceiver
*receiver
, u_int32_t sFlowRcvrPort
) {
132 receiver
->sFlowRcvrPort
= sFlowRcvrPort
;
133 // update the socket structure
134 #ifdef SFLOW_DO_SOCKET
135 initSocket(receiver
);
139 /*_________________---------------------------__________________
140 _________________ sfl_receiver_tick __________________
141 -----------------___________________________------------------
144 void sfl_receiver_tick(SFLReceiver
*receiver
, time_t now
)
146 // if there are any samples to send, flush them now
147 if(receiver
->sampleCollector
.numSamples
> 0) sendSample(receiver
);
149 if(receiver
->sFlowRcvrTimeout
&& (u_int32_t
)receiver
->sFlowRcvrTimeout
!= 0xFFFFFFFF) {
150 // count down one tick and reset if we reach 0
151 if(--receiver
->sFlowRcvrTimeout
== 0) reset(receiver
);
155 /*_________________-----------------------------__________________
156 _________________ receiver write utilities __________________
157 -----------------_____________________________------------------
160 inline static void put32(SFLReceiver
*receiver
, u_int32_t val
)
162 *receiver
->sampleCollector
.datap
++ = val
;
165 inline static void putNet32(SFLReceiver
*receiver
, u_int32_t val
)
167 *receiver
->sampleCollector
.datap
++ = htonl(val
);
170 inline static void putNet32_run(SFLReceiver
*receiver
, void *obj
, size_t quads
)
172 u_int32_t
*from
= (u_int32_t
*)obj
;
173 while(quads
--) putNet32(receiver
, *from
++);
176 inline static void putNet64(SFLReceiver
*receiver
, u_int64_t val64
)
178 u_int32_t
*firstQuadPtr
= receiver
->sampleCollector
.datap
;
179 // first copy the bytes in
180 memcpy((u_char
*)firstQuadPtr
, &val64
, 8);
182 // swap the bytes, and reverse the quads too
183 u_int32_t tmp
= *receiver
->sampleCollector
.datap
++;
184 *firstQuadPtr
= htonl(*receiver
->sampleCollector
.datap
);
185 *receiver
->sampleCollector
.datap
++ = htonl(tmp
);
187 else receiver
->sampleCollector
.datap
+= 2;
190 inline static void put128(SFLReceiver
*receiver
, u_char
*val
)
192 memcpy(receiver
->sampleCollector
.datap
, val
, 16);
193 receiver
->sampleCollector
.datap
+= 4;
196 inline static void putString(SFLReceiver
*receiver
, SFLString
*s
)
198 putNet32(receiver
, s
->len
);
199 memcpy(receiver
->sampleCollector
.datap
, s
->str
, s
->len
);
200 receiver
->sampleCollector
.datap
+= (s
->len
+ 3) / 4; /* pad to 4-byte boundary */
203 inline static u_int32_t
stringEncodingLength(SFLString
*s
) {
204 // answer in bytes, so remember to mulitply by 4 after rounding up to nearest 4-byte boundary
205 return 4 + (((s
->len
+ 3) / 4) * 4);
208 inline static void putAddress(SFLReceiver
*receiver
, SFLAddress
*addr
)
210 // encode unspecified addresses as IPV4:0.0.0.0 - or should we flag this as an error?
211 if(addr
->type
== 0) {
212 putNet32(receiver
, SFLADDRESSTYPE_IP_V4
);
216 putNet32(receiver
, addr
->type
);
217 if(addr
->type
== SFLADDRESSTYPE_IP_V4
) put32(receiver
, addr
->address
.ip_v4
.addr
);
218 else put128(receiver
, addr
->address
.ip_v6
.addr
);
222 inline static u_int32_t
addressEncodingLength(SFLAddress
*addr
) {
223 return (addr
->type
== SFLADDRESSTYPE_IP_V6
) ? 20 : 8; // type + address (unspecified == IPV4)
226 inline static void putMACAddress(SFLReceiver
*receiver
, u_int8_t
*mac
)
228 memcpy(receiver
->sampleCollector
.datap
, mac
, 6);
229 receiver
->sampleCollector
.datap
+= 2;
232 inline static void putSwitch(SFLReceiver
*receiver
, SFLExtended_switch
*sw
)
234 putNet32(receiver
, sw
->src_vlan
);
235 putNet32(receiver
, sw
->src_priority
);
236 putNet32(receiver
, sw
->dst_vlan
);
237 putNet32(receiver
, sw
->dst_priority
);
240 inline static void putRouter(SFLReceiver
*receiver
, SFLExtended_router
*router
)
242 putAddress(receiver
, &router
->nexthop
);
243 putNet32(receiver
, router
->src_mask
);
244 putNet32(receiver
, router
->dst_mask
);
247 inline static u_int32_t
routerEncodingLength(SFLExtended_router
*router
) {
248 return addressEncodingLength(&router
->nexthop
) + 8;
251 inline static void putGateway(SFLReceiver
*receiver
, SFLExtended_gateway
*gw
)
253 putAddress(receiver
, &gw
->nexthop
);
254 putNet32(receiver
, gw
->as
);
255 putNet32(receiver
, gw
->src_as
);
256 putNet32(receiver
, gw
->src_peer_as
);
257 putNet32(receiver
, gw
->dst_as_path_segments
);
260 for(; seg
< gw
->dst_as_path_segments
; seg
++) {
261 putNet32(receiver
, gw
->dst_as_path
[seg
].type
);
262 putNet32(receiver
, gw
->dst_as_path
[seg
].length
);
263 putNet32_run(receiver
, gw
->dst_as_path
[seg
].as
.seq
, gw
->dst_as_path
[seg
].length
);
266 putNet32(receiver
, gw
->communities_length
);
267 putNet32_run(receiver
, gw
->communities
, gw
->communities_length
);
268 putNet32(receiver
, gw
->localpref
);
271 inline static u_int32_t
gatewayEncodingLength(SFLExtended_gateway
*gw
) {
272 u_int32_t elemSiz
= addressEncodingLength(&gw
->nexthop
);
274 elemSiz
+= 16; // as, src_as, src_peer_as, dst_as_path_segments
275 for(; seg
< gw
->dst_as_path_segments
; seg
++) {
276 elemSiz
+= 8; // type, length
277 elemSiz
+= 4 * gw
->dst_as_path
[seg
].length
; // set/seq bytes
279 elemSiz
+= 4; // communities_length
280 elemSiz
+= 4 * gw
->communities_length
; // communities
281 elemSiz
+= 4; // localpref
285 inline static void putUser(SFLReceiver
*receiver
, SFLExtended_user
*user
)
287 putNet32(receiver
, user
->src_charset
);
288 putString(receiver
, &user
->src_user
);
289 putNet32(receiver
, user
->dst_charset
);
290 putString(receiver
, &user
->dst_user
);
293 inline static u_int32_t
userEncodingLength(SFLExtended_user
*user
) {
295 + stringEncodingLength(&user
->src_user
)
297 + stringEncodingLength(&user
->dst_user
);
300 inline static void putUrl(SFLReceiver
*receiver
, SFLExtended_url
*url
)
302 putNet32(receiver
, url
->direction
);
303 putString(receiver
, &url
->url
);
304 putString(receiver
, &url
->host
);
307 inline static u_int32_t
urlEncodingLength(SFLExtended_url
*url
) {
309 + stringEncodingLength(&url
->url
)
310 + stringEncodingLength(&url
->host
);
313 inline static void putLabelStack(SFLReceiver
*receiver
, SFLLabelStack
*labelStack
)
315 putNet32(receiver
, labelStack
->depth
);
316 putNet32_run(receiver
, labelStack
->stack
, labelStack
->depth
);
319 inline static u_int32_t
labelStackEncodingLength(SFLLabelStack
*labelStack
) {
320 return 4 + (4 * labelStack
->depth
);
323 inline static void putMpls(SFLReceiver
*receiver
, SFLExtended_mpls
*mpls
)
325 putAddress(receiver
, &mpls
->nextHop
);
326 putLabelStack(receiver
, &mpls
->in_stack
);
327 putLabelStack(receiver
, &mpls
->out_stack
);
330 inline static u_int32_t
mplsEncodingLength(SFLExtended_mpls
*mpls
) {
331 return addressEncodingLength(&mpls
->nextHop
)
332 + labelStackEncodingLength(&mpls
->in_stack
)
333 + labelStackEncodingLength(&mpls
->out_stack
);
336 inline static void putNat(SFLReceiver
*receiver
, SFLExtended_nat
*nat
)
338 putAddress(receiver
, &nat
->src
);
339 putAddress(receiver
, &nat
->dst
);
342 inline static u_int32_t
natEncodingLength(SFLExtended_nat
*nat
) {
343 return addressEncodingLength(&nat
->src
)
344 + addressEncodingLength(&nat
->dst
);
347 inline static void putMplsTunnel(SFLReceiver
*receiver
, SFLExtended_mpls_tunnel
*tunnel
)
349 putString(receiver
, &tunnel
->tunnel_lsp_name
);
350 putNet32(receiver
, tunnel
->tunnel_id
);
351 putNet32(receiver
, tunnel
->tunnel_cos
);
354 inline static u_int32_t
mplsTunnelEncodingLength(SFLExtended_mpls_tunnel
*tunnel
) {
355 return stringEncodingLength(&tunnel
->tunnel_lsp_name
) + 8;
358 inline static void putMplsVc(SFLReceiver
*receiver
, SFLExtended_mpls_vc
*vc
)
360 putString(receiver
, &vc
->vc_instance_name
);
361 putNet32(receiver
, vc
->vll_vc_id
);
362 putNet32(receiver
, vc
->vc_label_cos
);
365 inline static u_int32_t
mplsVcEncodingLength(SFLExtended_mpls_vc
*vc
) {
366 return stringEncodingLength( &vc
->vc_instance_name
) + 8;
369 inline static void putMplsFtn(SFLReceiver
*receiver
, SFLExtended_mpls_FTN
*ftn
)
371 putString(receiver
, &ftn
->mplsFTNDescr
);
372 putNet32(receiver
, ftn
->mplsFTNMask
);
375 inline static u_int32_t
mplsFtnEncodingLength(SFLExtended_mpls_FTN
*ftn
) {
376 return stringEncodingLength( &ftn
->mplsFTNDescr
) + 4;
379 inline static void putMplsLdpFec(SFLReceiver
*receiver
, SFLExtended_mpls_LDP_FEC
*ldpfec
)
381 putNet32(receiver
, ldpfec
->mplsFecAddrPrefixLength
);
384 inline static u_int32_t
mplsLdpFecEncodingLength(SFLExtended_mpls_LDP_FEC
*ldpfec
) {
388 inline static void putVlanTunnel(SFLReceiver
*receiver
, SFLExtended_vlan_tunnel
*vlanTunnel
)
390 putLabelStack(receiver
, &vlanTunnel
->stack
);
393 inline static u_int32_t
vlanTunnelEncodingLength(SFLExtended_vlan_tunnel
*vlanTunnel
) {
394 return labelStackEncodingLength(&vlanTunnel
->stack
);
398 inline static void putGenericCounters(SFLReceiver
*receiver
, SFLIf_counters
*counters
)
400 putNet32(receiver
, counters
->ifIndex
);
401 putNet32(receiver
, counters
->ifType
);
402 putNet64(receiver
, counters
->ifSpeed
);
403 putNet32(receiver
, counters
->ifDirection
);
404 putNet32(receiver
, counters
->ifStatus
);
405 putNet64(receiver
, counters
->ifInOctets
);
406 putNet32(receiver
, counters
->ifInUcastPkts
);
407 putNet32(receiver
, counters
->ifInMulticastPkts
);
408 putNet32(receiver
, counters
->ifInBroadcastPkts
);
409 putNet32(receiver
, counters
->ifInDiscards
);
410 putNet32(receiver
, counters
->ifInErrors
);
411 putNet32(receiver
, counters
->ifInUnknownProtos
);
412 putNet64(receiver
, counters
->ifOutOctets
);
413 putNet32(receiver
, counters
->ifOutUcastPkts
);
414 putNet32(receiver
, counters
->ifOutMulticastPkts
);
415 putNet32(receiver
, counters
->ifOutBroadcastPkts
);
416 putNet32(receiver
, counters
->ifOutDiscards
);
417 putNet32(receiver
, counters
->ifOutErrors
);
418 putNet32(receiver
, counters
->ifPromiscuousMode
);
422 /*_________________-----------------------------__________________
423 _________________ computeFlowSampleSize __________________
424 -----------------_____________________________------------------
427 static int computeFlowSampleSize(SFLReceiver
*receiver
, SFL_FLOW_SAMPLE_TYPE
*fs
)
429 SFLFlow_sample_element
*elem
= fs
->elements
;
430 #ifdef SFL_USE_32BIT_INDEX
431 u_int siz
= 52; /* tag, length, sequence_number, ds_class, ds_index, sampling_rate,
432 sample_pool, drops, inputFormat, input, outputFormat, output, number of elements */
434 u_int siz
= 40; /* tag, length, sequence_number, source_id, sampling_rate,
435 sample_pool, drops, input, output, number of elements */
438 fs
->num_elements
= 0; /* we're going to count them again even if this was set by the client */
439 for(; elem
!= NULL
; elem
= elem
->nxt
) {
442 siz
+= 8; /* tag, length */
445 elemSiz
= 16; /* header_protocol, frame_length, stripped, header_length */
446 elemSiz
+= ((elem
->flowType
.header
.header_length
+ 3) / 4) * 4; /* header, rounded up to nearest 4 bytes */
448 case SFLFLOW_ETHERNET
: elemSiz
= sizeof(SFLSampled_ethernet
); break;
449 case SFLFLOW_IPV4
: elemSiz
= sizeof(SFLSampled_ipv4
); break;
450 case SFLFLOW_IPV6
: elemSiz
= sizeof(SFLSampled_ipv6
); break;
451 case SFLFLOW_EX_SWITCH
: elemSiz
= sizeof(SFLExtended_switch
); break;
452 case SFLFLOW_EX_ROUTER
: elemSiz
= routerEncodingLength(&elem
->flowType
.router
); break;
453 case SFLFLOW_EX_GATEWAY
: elemSiz
= gatewayEncodingLength(&elem
->flowType
.gateway
); break;
454 case SFLFLOW_EX_USER
: elemSiz
= userEncodingLength(&elem
->flowType
.user
); break;
455 case SFLFLOW_EX_URL
: elemSiz
= urlEncodingLength(&elem
->flowType
.url
); break;
456 case SFLFLOW_EX_MPLS
: elemSiz
= mplsEncodingLength(&elem
->flowType
.mpls
); break;
457 case SFLFLOW_EX_NAT
: elemSiz
= natEncodingLength(&elem
->flowType
.nat
); break;
458 case SFLFLOW_EX_MPLS_TUNNEL
: elemSiz
= mplsTunnelEncodingLength(&elem
->flowType
.mpls_tunnel
); break;
459 case SFLFLOW_EX_MPLS_VC
: elemSiz
= mplsVcEncodingLength(&elem
->flowType
.mpls_vc
); break;
460 case SFLFLOW_EX_MPLS_FTN
: elemSiz
= mplsFtnEncodingLength(&elem
->flowType
.mpls_ftn
); break;
461 case SFLFLOW_EX_MPLS_LDP_FEC
: elemSiz
= mplsLdpFecEncodingLength(&elem
->flowType
.mpls_ldp_fec
); break;
462 case SFLFLOW_EX_VLAN_TUNNEL
: elemSiz
= vlanTunnelEncodingLength(&elem
->flowType
.vlan_tunnel
); break;
464 sflError(receiver
, "unexpected packet_data_tag");
468 // cache the element size, and accumulate it into the overall FlowSample size
469 elem
->length
= elemSiz
;
476 /*_________________-------------------------------__________________
477 _________________ sfl_receiver_writeFlowSample __________________
478 -----------------_______________________________------------------
481 int sfl_receiver_writeFlowSample(SFLReceiver
*receiver
, SFL_FLOW_SAMPLE_TYPE
*fs
)
484 if(fs
== NULL
) return -1;
485 if((packedSize
= computeFlowSampleSize(receiver
, fs
)) == -1) return -1;
487 // check in case this one sample alone is too big for the datagram
488 // in fact - if it is even half as big then we should ditch it. Very
489 // important to avoid overruning the packet buffer.
490 if(packedSize
> (int)(receiver
->sFlowRcvrMaximumDatagramSize
/ 2)) {
491 sflError(receiver
, "flow sample too big for datagram");
495 // if the sample pkt is full enough so that this sample might put
496 // it over the limit, then we should send it now before going on.
497 if((receiver
->sampleCollector
.pktlen
+ packedSize
) >= receiver
->sFlowRcvrMaximumDatagramSize
)
498 sendSample(receiver
);
500 receiver
->sampleCollector
.numSamples
++;
502 #ifdef SFL_USE_32BIT_INDEX
503 putNet32(receiver
, SFLFLOW_SAMPLE_EXPANDED
);
505 putNet32(receiver
, SFLFLOW_SAMPLE
);
508 putNet32(receiver
, packedSize
- 8); // don't include tag and len
509 putNet32(receiver
, fs
->sequence_number
);
511 #ifdef SFL_USE_32BIT_INDEX
512 putNet32(receiver
, fs
->ds_class
);
513 putNet32(receiver
, fs
->ds_index
);
515 putNet32(receiver
, fs
->source_id
);
518 putNet32(receiver
, fs
->sampling_rate
);
519 putNet32(receiver
, fs
->sample_pool
);
520 putNet32(receiver
, fs
->drops
);
522 #ifdef SFL_USE_32BIT_INDEX
523 putNet32(receiver
, fs
->inputFormat
);
524 putNet32(receiver
, fs
->input
);
525 putNet32(receiver
, fs
->outputFormat
);
526 putNet32(receiver
, fs
->output
);
528 putNet32(receiver
, fs
->input
);
529 putNet32(receiver
, fs
->output
);
532 putNet32(receiver
, fs
->num_elements
);
535 SFLFlow_sample_element
*elem
= fs
->elements
;
536 for(; elem
!= NULL
; elem
= elem
->nxt
) {
538 putNet32(receiver
, elem
->tag
);
539 putNet32(receiver
, elem
->length
); // length cached in computeFlowSampleSize()
543 putNet32(receiver
, elem
->flowType
.header
.header_protocol
);
544 putNet32(receiver
, elem
->flowType
.header
.frame_length
);
545 putNet32(receiver
, elem
->flowType
.header
.stripped
);
546 putNet32(receiver
, elem
->flowType
.header
.header_length
);
548 memcpy(receiver
->sampleCollector
.datap
, elem
->flowType
.header
.header_bytes
, elem
->flowType
.header
.header_length
);
549 /* round up to multiple of 4 to preserve alignment */
550 receiver
->sampleCollector
.datap
+= ((elem
->flowType
.header
.header_length
+ 3) / 4);
552 case SFLFLOW_ETHERNET
:
553 putNet32(receiver
, elem
->flowType
.ethernet
.eth_len
);
554 putMACAddress(receiver
, elem
->flowType
.ethernet
.src_mac
);
555 putMACAddress(receiver
, elem
->flowType
.ethernet
.dst_mac
);
556 putNet32(receiver
, elem
->flowType
.ethernet
.eth_type
);
559 putNet32(receiver
, elem
->flowType
.ipv4
.length
);
560 putNet32(receiver
, elem
->flowType
.ipv4
.protocol
);
561 put32(receiver
, elem
->flowType
.ipv4
.src_ip
.addr
);
562 put32(receiver
, elem
->flowType
.ipv4
.dst_ip
.addr
);
563 putNet32(receiver
, elem
->flowType
.ipv4
.src_port
);
564 putNet32(receiver
, elem
->flowType
.ipv4
.dst_port
);
565 putNet32(receiver
, elem
->flowType
.ipv4
.tcp_flags
);
566 putNet32(receiver
, elem
->flowType
.ipv4
.tos
);
569 putNet32(receiver
, elem
->flowType
.ipv6
.length
);
570 putNet32(receiver
, elem
->flowType
.ipv6
.protocol
);
571 put128(receiver
, elem
->flowType
.ipv6
.src_ip
.addr
);
572 put128(receiver
, elem
->flowType
.ipv6
.dst_ip
.addr
);
573 putNet32(receiver
, elem
->flowType
.ipv6
.src_port
);
574 putNet32(receiver
, elem
->flowType
.ipv6
.dst_port
);
575 putNet32(receiver
, elem
->flowType
.ipv6
.tcp_flags
);
576 putNet32(receiver
, elem
->flowType
.ipv6
.priority
);
578 case SFLFLOW_EX_SWITCH
: putSwitch(receiver
, &elem
->flowType
.sw
); break;
579 case SFLFLOW_EX_ROUTER
: putRouter(receiver
, &elem
->flowType
.router
); break;
580 case SFLFLOW_EX_GATEWAY
: putGateway(receiver
, &elem
->flowType
.gateway
); break;
581 case SFLFLOW_EX_USER
: putUser(receiver
, &elem
->flowType
.user
); break;
582 case SFLFLOW_EX_URL
: putUrl(receiver
, &elem
->flowType
.url
); break;
583 case SFLFLOW_EX_MPLS
: putMpls(receiver
, &elem
->flowType
.mpls
); break;
584 case SFLFLOW_EX_NAT
: putNat(receiver
, &elem
->flowType
.nat
); break;
585 case SFLFLOW_EX_MPLS_TUNNEL
: putMplsTunnel(receiver
, &elem
->flowType
.mpls_tunnel
); break;
586 case SFLFLOW_EX_MPLS_VC
: putMplsVc(receiver
, &elem
->flowType
.mpls_vc
); break;
587 case SFLFLOW_EX_MPLS_FTN
: putMplsFtn(receiver
, &elem
->flowType
.mpls_ftn
); break;
588 case SFLFLOW_EX_MPLS_LDP_FEC
: putMplsLdpFec(receiver
, &elem
->flowType
.mpls_ldp_fec
); break;
589 case SFLFLOW_EX_VLAN_TUNNEL
: putVlanTunnel(receiver
, &elem
->flowType
.vlan_tunnel
); break;
591 sflError(receiver
, "unexpected packet_data_tag");
599 assert(((u_char
*)receiver
->sampleCollector
.datap
600 - (u_char
*)receiver
->sampleCollector
.data
601 - receiver
->sampleCollector
.pktlen
) == (u_int32_t
)packedSize
);
604 receiver
->sampleCollector
.pktlen
= (u_char
*)receiver
->sampleCollector
.datap
- (u_char
*)receiver
->sampleCollector
.data
;
608 /*_________________-----------------------------__________________
609 _________________ computeCountersSampleSize __________________
610 -----------------_____________________________------------------
613 static int computeCountersSampleSize(SFLReceiver
*receiver
, SFL_COUNTERS_SAMPLE_TYPE
*cs
)
615 SFLCounters_sample_element
*elem
= cs
->elements
;
616 #ifdef SFL_USE_32BIT_INDEX
617 u_int siz
= 24; /* tag, length, sequence_number, ds_class, ds_index, number of elements */
619 u_int siz
= 20; /* tag, length, sequence_number, source_id, number of elements */
622 cs
->num_elements
= 0; /* we're going to count them again even if this was set by the client */
623 for(; elem
!= NULL
; elem
= elem
->nxt
) {
626 siz
+= 8; /* tag, length */
628 case SFLCOUNTERS_GENERIC
: elemSiz
= sizeof(elem
->counterBlock
.generic
); break;
629 case SFLCOUNTERS_ETHERNET
: elemSiz
= sizeof(elem
->counterBlock
.ethernet
); break;
630 case SFLCOUNTERS_TOKENRING
: elemSiz
= sizeof(elem
->counterBlock
.tokenring
); break;
631 case SFLCOUNTERS_VG
: elemSiz
= sizeof(elem
->counterBlock
.vg
); break;
632 case SFLCOUNTERS_VLAN
: elemSiz
= sizeof(elem
->counterBlock
.vlan
); break;
634 sflError(receiver
, "unexpected counters_tag");
638 // cache the element size, and accumulate it into the overall FlowSample size
639 elem
->length
= elemSiz
;
645 /*_________________----------------------------------__________________
646 _________________ sfl_receiver_writeCountersSample __________________
647 -----------------__________________________________------------------
650 int sfl_receiver_writeCountersSample(SFLReceiver
*receiver
, SFL_COUNTERS_SAMPLE_TYPE
*cs
)
653 if(cs
== NULL
) return -1;
654 // if the sample pkt is full enough so that this sample might put
655 // it over the limit, then we should send it now.
656 if((packedSize
= computeCountersSampleSize(receiver
, cs
)) == -1) return -1;
658 // check in case this one sample alone is too big for the datagram
659 // in fact - if it is even half as big then we should ditch it. Very
660 // important to avoid overruning the packet buffer.
661 if(packedSize
> (int)(receiver
->sFlowRcvrMaximumDatagramSize
/ 2)) {
662 sflError(receiver
, "counters sample too big for datagram");
666 if((receiver
->sampleCollector
.pktlen
+ packedSize
) >= receiver
->sFlowRcvrMaximumDatagramSize
)
667 sendSample(receiver
);
669 receiver
->sampleCollector
.numSamples
++;
671 #ifdef SFL_USE_32BIT_INDEX
672 putNet32(receiver
, SFLCOUNTERS_SAMPLE_EXPANDED
);
674 putNet32(receiver
, SFLCOUNTERS_SAMPLE
);
677 putNet32(receiver
, packedSize
- 8); // tag and length not included
678 putNet32(receiver
, cs
->sequence_number
);
680 #ifdef SFL_USE_32BIT_INDEX
681 putNet32(receiver
, cs
->ds_class
);
682 putNet32(receiver
, cs
->ds_index
);
684 putNet32(receiver
, cs
->source_id
);
687 putNet32(receiver
, cs
->num_elements
);
690 SFLCounters_sample_element
*elem
= cs
->elements
;
691 for(; elem
!= NULL
; elem
= elem
->nxt
) {
693 putNet32(receiver
, elem
->tag
);
694 putNet32(receiver
, elem
->length
); // length cached in computeCountersSampleSize()
697 case SFLCOUNTERS_GENERIC
:
698 putGenericCounters(receiver
, &(elem
->counterBlock
.generic
));
700 case SFLCOUNTERS_ETHERNET
:
701 // all these counters are 32-bit
702 putNet32_run(receiver
, &elem
->counterBlock
.ethernet
, sizeof(elem
->counterBlock
.ethernet
) / 4);
704 case SFLCOUNTERS_TOKENRING
:
705 // all these counters are 32-bit
706 putNet32_run(receiver
, &elem
->counterBlock
.tokenring
, sizeof(elem
->counterBlock
.tokenring
) / 4);
710 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InHighPriorityFrames
);
711 putNet64(receiver
, elem
->counterBlock
.vg
.dot12InHighPriorityOctets
);
712 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InNormPriorityFrames
);
713 putNet64(receiver
, elem
->counterBlock
.vg
.dot12InNormPriorityOctets
);
714 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InIPMErrors
);
715 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InOversizeFrameErrors
);
716 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InDataErrors
);
717 putNet32(receiver
, elem
->counterBlock
.vg
.dot12InNullAddressedFrames
);
718 putNet32(receiver
, elem
->counterBlock
.vg
.dot12OutHighPriorityFrames
);
719 putNet64(receiver
, elem
->counterBlock
.vg
.dot12OutHighPriorityOctets
);
720 putNet32(receiver
, elem
->counterBlock
.vg
.dot12TransitionIntoTrainings
);
721 putNet64(receiver
, elem
->counterBlock
.vg
.dot12HCInHighPriorityOctets
);
722 putNet64(receiver
, elem
->counterBlock
.vg
.dot12HCInNormPriorityOctets
);
723 putNet64(receiver
, elem
->counterBlock
.vg
.dot12HCOutHighPriorityOctets
);
725 case SFLCOUNTERS_VLAN
:
727 putNet32(receiver
, elem
->counterBlock
.vlan
.vlan_id
);
728 putNet64(receiver
, elem
->counterBlock
.vlan
.octets
);
729 putNet32(receiver
, elem
->counterBlock
.vlan
.ucastPkts
);
730 putNet32(receiver
, elem
->counterBlock
.vlan
.multicastPkts
);
731 putNet32(receiver
, elem
->counterBlock
.vlan
.broadcastPkts
);
732 putNet32(receiver
, elem
->counterBlock
.vlan
.discards
);
735 sflError(receiver
, "unexpected counters_tag");
742 assert(((u_char
*)receiver
->sampleCollector
.datap
743 - (u_char
*)receiver
->sampleCollector
.data
744 - receiver
->sampleCollector
.pktlen
) == (u_int32_t
)packedSize
);
747 receiver
->sampleCollector
.pktlen
= (u_char
*)receiver
->sampleCollector
.datap
- (u_char
*)receiver
->sampleCollector
.data
;
751 /*_________________---------------------------------__________________
752 _________________ sfl_receiver_samplePacketsSent __________________
753 -----------------_________________________________------------------
756 u_int32_t
sfl_receiver_samplePacketsSent(SFLReceiver
*receiver
)
758 return receiver
->sampleCollector
.packetSeqNo
;
761 /*_________________---------------------------__________________
762 _________________ sendSample __________________
763 -----------------___________________________------------------
766 static void sendSample(SFLReceiver
*receiver
)
768 /* construct and send out the sample, then reset for the next one... */
769 /* first fill in the header with the latest values */
770 /* version, agent_address and sub_agent_id were pre-set. */
771 u_int32_t hdrIdx
= (receiver
->agent
->myIP
.type
== SFLADDRESSTYPE_IP_V6
) ? 7 : 4;
772 receiver
->sampleCollector
.data
[hdrIdx
++] = htonl(++receiver
->sampleCollector
.packetSeqNo
); /* seq no */
773 receiver
->sampleCollector
.data
[hdrIdx
++] = htonl((receiver
->agent
->now
- receiver
->agent
->bootTime
) * 1000); /* uptime */
774 receiver
->sampleCollector
.data
[hdrIdx
++] = htonl(receiver
->sampleCollector
.numSamples
); /* num samples */
776 if(receiver
->agent
->sendFn
) (*receiver
->agent
->sendFn
)(receiver
->agent
->magic
,
779 (u_char
*)receiver
->sampleCollector
.data
,
780 receiver
->sampleCollector
.pktlen
);
782 #ifdef SFLOW_DO_SOCKET
784 if (receiver
->sFlowRcvrAddress
.type
== SFLADDRESSTYPE_IP_V6
) {
785 u_int32_t soclen
= sizeof(struct sockaddr_in6
);
786 int result
= sendto(receiver
->agent
->receiverSocket6
,
787 receiver
->sampleCollector
.data
,
788 receiver
->sampleCollector
.pktlen
,
790 (struct sockaddr
*)&receiver
->receiver6
,
792 if(result
== -1 && errno
!= EINTR
) sfl_agent_sysError(receiver
->agent
, "receiver", "IPv6 socket sendto error");
793 if(result
== 0) sfl_agent_error(receiver
->agent
, "receiver", "IPv6 socket sendto returned 0");
796 u_int32_t soclen
= sizeof(struct sockaddr_in
);
797 int result
= sendto(receiver
->agent
->receiverSocket4
,
798 receiver
->sampleCollector
.data
,
799 receiver
->sampleCollector
.pktlen
,
801 (struct sockaddr
*)&receiver
->receiver4
,
803 if(result
== -1 && errno
!= EINTR
) sfl_agent_sysError(receiver
->agent
, "receiver", "socket sendto error");
804 if(result
== 0) sfl_agent_error(receiver
->agent
, "receiver", "socket sendto returned 0");
809 /* reset for the next time */
810 resetSampleCollector(receiver
);
813 /*_________________---------------------------__________________
814 _________________ resetSampleCollector __________________
815 -----------------___________________________------------------
818 static void resetSampleCollector(SFLReceiver
*receiver
)
820 receiver
->sampleCollector
.pktlen
= 0;
821 receiver
->sampleCollector
.numSamples
= 0;
822 /* point the datap to just after the header */
823 receiver
->sampleCollector
.datap
= (receiver
->agent
->myIP
.type
== SFLADDRESSTYPE_IP_V6
) ?
824 (receiver
->sampleCollector
.data
+ 10) : (receiver
->sampleCollector
.data
+ 7);
826 receiver
->sampleCollector
.pktlen
= (u_char
*)receiver
->sampleCollector
.datap
- (u_char
*)receiver
->sampleCollector
.data
;
829 /*_________________---------------------------__________________
830 _________________ sflError __________________
831 -----------------___________________________------------------
834 static void sflError(SFLReceiver
*receiver
, char *msg
)
836 sfl_agent_error(receiver
->agent
, "receiver", msg
);
837 resetSampleCollector(receiver
);
840 #endif /* !__CHECKER__ */