[PATCH nf-next v3 00/10] netfilter: nft_bitwise: shift support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The connmark xtables extension supports bit-shifts.  Add support for
shifts to nft_bitwise in order to allow nftables to do likewise, e.g.:

  nft add rule t c oif lo ct mark set meta mark << 8 | 0xab
  nft add rule t c iif lo meta mark & 0xff 0xab ct mark set meta mark >> 8

Changes since v2:

  * convert NFTA_BITWISE_DATA from u32 to nft_data;
  * add check that shift value is not too large;
  * use BITS_PER_TYPE to get the size of u32, rather than hard-coding it
    when evaluating shifts.

Changes since v1:

  * more white-space fixes;
  * move bitwise op enum to UAPI;
  * add NFTA_BITWISE_OP and NFTA_BITWISE_DATA;
  * remove NFTA_BITWISE_LSHIFT and NFTA_BITWISE_RSHIFT;
  * add helpers for initializaing, evaluating and dumping different
    types of operation.

Jeremy Sowden (10):
  netfilter: nf_tables: white-space fixes.
  netfilter: bitwise: remove NULL comparisons from attribute checks.
  netfilter: bitwise: replace gotos with returns.
  netfilter: bitwise: add NFTA_BITWISE_OP netlink attribute.
  netfilter: bitwise: add helper for initializing boolean operations.
  netfilter: bitwise: add helper for evaluating boolean operations.
  netfilter: bitwise: add helper for dumping boolean operations.
  netfilter: bitwise: only offload boolean operations.
  netfilter: bitwise: add NFTA_BITWISE_DATA attribute.
  netfilter: bitwise: add support for shifts.

 include/uapi/linux/netfilter/nf_tables.h |  24 ++-
 net/netfilter/nft_bitwise.c              | 217 ++++++++++++++++++-----
 net/netfilter/nft_set_bitmap.c           |   4 +-
 net/netfilter/nft_set_hash.c             |   2 +-
 4 files changed, 200 insertions(+), 47 deletions(-)

-- 
2.24.1




[Index of Archives]     [Netfitler Users]     [Berkeley Packet Filter]     [LARTC]     [Bugtraq]     [Yosemite Forum]

  Powered by Linux