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| author | Florian Westphal <[email protected]> | 2022-01-28 12:00:36 +0000 |
|---|---|---|
| committer | Pablo Neira Ayuso <[email protected]> | 2022-02-04 05:30:28 +0000 |
| commit | 7890cbea66e78a3a6037b2a12827118d7243270b (patch) | |
| tree | 87d76005c04107777a3561ad0bafe13168530dde /net/switchdev/switchdev.c | |
| parent | netfilter: conntrack: pptp: use single option structure (diff) | |
| download | kernel-7890cbea66e78a3a6037b2a12827118d7243270b.tar.gz kernel-7890cbea66e78a3a6037b2a12827118d7243270b.zip | |
netfilter: exthdr: add support for tcp option removal
This allows to replace a tcp option with nop padding to selectively disable
a particular tcp option.
Optstrip mode is chosen when userspace passes the exthdr expression with
neither a source nor a destination register attribute.
This is identical to xtables TCPOPTSTRIP extension.
The only difference is that TCPOPTSTRIP allows to pass in a bitmap
of options to remove rather than a single number.
Unlike TCPOPTSTRIP this expression can be used multiple times
in the same rule to get the same effect.
We could add a new nested attribute later on in case there is a
use case for single-expression-multi-remove.
Signed-off-by: Florian Westphal <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions