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use the meta template to translate the textual token to the enum value.
This allows to remove two keywords from the scanner and also means we do
not need to introduce new keywords when more meta keys get added.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Error: conflicting protocols specified: inet vs. ether
tcp dport 22 iiftype ether ether saddr 00:0f:54:0c:11:4
^^^^^^^^^^^
This allows the implicit inet proto dependency to get replaced
by an ethernet one.
This is possible since by the time we detect the conflict the
meta dependency for the network protocol has already been added.
So we only need to add another dependency on the Linklayer frame type.
Closes: http://bugzilla.netfilter.org/show_bug.cgi?id=981
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
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This allows you to clone packets to destination address, eg.
... dup to 172.20.0.2
... dup to 172.20.0.2 device eth1
... dup to ip saddr map { 192.168.0.2 : 172.20.0.2, ... } device eth1
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add a callback function to the expression ops to update the protocol
context for relational protocol expressions (EXPR_F_PROTOCOL).
Also set the EXPR_F_PROTOCOL flag for IIFTYPE meta expressions to make
sure the callback is invoked when necessary.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Currently the context of higher layer protocols is specific to payload
expressions with some special cases for meta IIFTYPE expressions. This
approach has a few shortcomings, concretely there are more expression
types which define upper layer protocols like the ct expression and two
upcoming new types for the meta expression.
Replace the payload context by a generic protocol context to deal with
this. This patch just splits off the requires parts from the payload
expression without any functional changes, the following patches will
add further functionality for other expressions.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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