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Differential D17406

Fix ips_localout counter for SCTP
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Authored by tuexen on Oct 4 2018, 1:41 PM.

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Reviewers

rrs
jtl
bz
ae

Commits

rS339219: Ensure that the ips_localout counter is incremented for

Summary

When sending SCTP packets, the SCTP stack provides an IPv4 or IPv6 header when calling ip_output() or ipv6_output(). Currently, the IPv4 stack does not count these packets using the ips_localout counter whereas the IPv6 stack does count them correctly in the ip6s_localout counter.

This patch ensures that packets sent via IPv4 with an IPv4 header provided by the caller of ip_output() are counted in the ips_localout counter.

Test Plan

Run an SCTP capable test program on the loopback interface and watch the counter using systat -ip.

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Repository

rS FreeBSD src repository - subversion

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Event Timeline

tuexen created this revision.Oct 4 2018, 1:41 PM

Herald added a subscriber: imp. · View Herald TranscriptOct 4 2018, 1:41 PM

Harbormaster completed remote builds in B19958: Diff 48716.Oct 4 2018, 1:41 PM

Looking at the how IP_FORWARDING flag is used, I think gif/gre/me interfaces should not use this flag. What you think?

This revision is now accepted and ready to land.Oct 4 2018, 2:00 PM

jtl accepted this revision.Oct 4 2018, 4:21 PM

bz accepted this revision.Oct 4 2018, 5:20 PM

Closed by commit rS339219: Ensure that the ips_localout counter is incremented for (authored by tuexen). · Explain WhyOct 7 2018, 11:26 AM

This revision was automatically updated to reflect the committed changes.

In D17406#371337, @ae wrote:

Looking at the how IP_FORWARDING flag is used, I think gif/gre/me interfaces should not use this flag. What you think?

Need to look into this. Will report in the next days.

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head/

sys/

netinet/

3 lines

Diff 48850

head/sys/netinet/ip_output.c

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