netfilter: nf_tables: variable sized set element keys / data

This patch changes sets to support variable sized set element keys / data up to 64 bytes each by using variable sized set extensions. This allows to use concatenations with bigger data items suchs as IPv6 addresses. As a side effect, small keys/data now don't require the full 16 bytes of struct nft_data anymore but just the space they need.

Patrick McHardy committed 11 years ago

Commit 7d740261 parent d0a11fc5 files · +23 −19Browse files

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include/uapi/linux/netfilter/nf_tables.h+3−0

@@ -388,6 +388,9 @@ enum nft_data_attributes { · 387 unmodified lines
388	388	};
389	389	#define NFTA_DATA_MAX (__NFTA_DATA_MAX - 1)
390	390
	391	+/* Maximum length of a value */
	392	+#define NFT_DATA_VALUE_MAXLEN 64
	393	+
391	394	/**
392	395	* enum nft_verdict_attributes - nf_tables verdict netlink attributes
393	396	*