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netfilter: nf_tables: Allow table names of up to 255 chars

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Allocate all table names dynamically to allow for arbitrary lengths but
introduce NFT_NAME_MAXLEN as an upper sanity boundary. It's value was
chosen to allow using a domain name as per RFC 1035.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Phil Sutter
2017-07-27 16:56:41 +02:00
committed by Pablo Neira Ayuso
parent 2cf0c8b3e6
commit e46abbcc05
4 changed files with 40 additions and 16 deletions
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2
include/net/netfilter/nf_tables.h
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@@ -957,7 +957,7 @@ struct nft_table {
u32 use;
u16 flags:14,
genmask:2;
char name[NFT_TABLE_MAXNAMELEN];
char *name;
};
enum nft_af_flags {