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author | David S. Miller <davem@davemloft.net> | 2015-08-31 22:34:00 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2015-08-31 22:34:00 +0300 |
commit | 9dc30648f0708cf063e29470d83f63f8dc8fc430 (patch) | |
tree | f12130b61955f4471ebd61474244ecf9ebdc0858 /mm/maccess.c | |
parent | 87583ebb9f6ea6dc7f8ef167b815656787e429fc (diff) | |
parent | c3a8d9474684d391b0afc3970d9b249add15ec07 (diff) | |
download | linux-9dc30648f0708cf063e29470d83f63f8dc8fc430.tar.xz |
Merge branch 'per-route-dctcp-receive-side'
Daniel Borkmann says:
====================
tcp: receive-side per route dctcp handling
Original cover letter:
Currently, the following case doesn't use DCTCP, even if it should:
- responder has f.e. cubic as system wide default
- 'ip route congctl dctcp $src' was set
Then, DCTCP is NOT used if a DCTCP sender attempts to connect from a
host in the $src range: ECT(0) is set, but listen_sk is not dctcp, so
we fail the INET_ECN_is_not_ect sanity check.
We also have to examine the dst used for the SYN/ACK reply to make
this case work.
In order to minimize additional cost, store the 'ecn is must have'
information is the dst_features field.
The set targets -next instead of -net since this doesn't seem to be a
serious bug and to give the change more soak time until it hits linus
tree.
v1 -> v2:
- Addressed Dave's feedback, not exposing any bits to user space
- Added patch 3 to reject incorrect configurations
- Rest as is, rebased and retested
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/maccess.c')
0 files changed, 0 insertions, 0 deletions