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to embed up to four counters in outgoing packets. The message specifies
the offset at which the counter should be inserted as well as the
parameters of the counter.
Example usage:
ngctl msg src0: setcounter \
'{ index=0 offset=0x40 flags=1 width=4 increment=1 max_val=12345 }'
Sponsored by: Sandvine Incorporated
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to embed a timestamp (struct timeval) in outgoing packets. The message
specifies the offset at which the timestamp should be inserted.
NG_SOURCE(4) gives an example usage that queues an ICMP packet. Using that
example, the following command will insert a timestamp in the ICMP's data
payload:
ngctl msg src0: settimestamp '{ offset=0x2a flags=1 }'
Sponsored by: Sandvine Incorporated
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Functional changes:
- Cut struct source_hookinfo. Just use hook_p pointer.
- Remove "start_now" command. "start" command now requires number of
packets to send as argument. "start" command actually starts sending.
Move the code that actually starts sending from ng_source_rcvmsg()
to ng_source_start().
- Remove check for NG_SOURCE_ACTIVE in ng_source_stop(). We can be called
with flag cleared (see begin of ng_source_intr()).
- If NG_SEND_DATA_ONLY() use log(LOG_DEBUG) instead of printf(). Otherwise
we will *flood* console.
- Add ng_connect_t method, which sends NGM_ETHER_GET_IFNAME command
to "output" hook. Cut ng_source_request_output_ifp(). Refactor
ng_source_store_output_ifp() to use ifunit() and don't muck through
interface list.
- Add "setiface" command, which gives ability to configure interface
in case when ng_source_connect() failed. This happens, when we are not
connected directly to ng_ether(4) node.
- Remove KASSERTs, which can never fire.
- Don't check for M_PKTHDR in rcvdata method. netgraph(4) does this
for us.
Style:
- Assign sc_p = NG_NODE_PRIVATE(node) in declaration, to be
consistent with style of other nodes.
- Sort variables.
- u_intXX -> uintXX.
- Dots at ends of comments.
Sponsored by: Rambler
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The latter was particularly violated by someone's editor in the past, due
to an effect I like to call "premature linewrapping."
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traffic for non-ethernet hooks. This commit should have been packaged
with the commit to ng_source.c.
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Reviewed by: archie, harti, emax
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This is NOT YET CONVERTED TO -current.
This node is a source for preprogrammed packets at a known rate for testing.
I will convert it to -current "in place" but will MFC teh original
pre-conversion variant as that is what is originally submitted.
Man page my me, info from Dave's README.
Submitted by: Dave Chapeskie <dchapeskie@SANDVINE.com>
Obtained from: Sandvine inc.
MFC after: 1 week
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