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netfilter: ctnetlink: allow to set expectfn for expectations

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This patch allows you to set expectfn which is specifically used
by the NAT side of most of the existing conntrack helpers.

I have added a symbol map that uses a string as key to look up for
the function that is attached to the expectation object. This is
the best solution I came out with to solve this issue.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso
2012-02-05 03:44:51 +01:00
parent 076a0ca026
commit 544d5c7d9f
7 changed files with 115 additions and 1 deletions
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include/linux/netfilter/nfnetlink_conntrack.h
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@@ -175,6 +175,7 @@ enum ctattr_expect {
CTA_EXPECT_FLAGS,
CTA_EXPECT_CLASS,
CTA_EXPECT_NAT,
CTA_EXPECT_FN,
__CTA_EXPECT_MAX
};
#define CTA_EXPECT_MAX (__CTA_EXPECT_MAX - 1)