1. 03 11月, 2016 12 次提交
  2. 02 11月, 2016 7 次提交
    • F
      netfilter: nf_queue: place volatile data in own cacheline · 886bc503
      Florian Westphal 提交于
      As the comment indicates, the data at the end of nfqnl_instance struct is
      written on every queue/dequeue, so it should reside in its own cacheline.
      
      Before this change, 'lock' was in first cacheline so we dirtied both.
      Signed-off-by: NFlorian Westphal <fw@strlen.de>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      886bc503
    • L
      netfilter: nf_tables: remove useless U8_MAX validation · e41e9d62
      Liping Zhang 提交于
      After call nft_data_init, size is already validated and desc.len will
      not exceed the sizeof(struct nft_data), i.e. 16 bytes. So it will never
      exceed U8_MAX.
      
      Furthermore, in nft_immediate_init, we forget to call nft_data_uninit
      when desc.len exceeds U8_MAX, although this will not happen, but it's
      a logical mistake.
      
      Now remove these redundant validation introduced by commit 36b701fa
      ("netfilter: nf_tables: validate maximum value of u32 netlink attributes")
      Signed-off-by: NLiping Zhang <zlpnobody@gmail.com>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      e41e9d62
    • A
      netfilter: nf_tables: introduce routing expression · 2fa84193
      Anders K. Pedersen 提交于
      Introduces an nftables rt expression for routing related data with support
      for nexthop (i.e. the directly connected IP address that an outgoing packet
      is sent to), which can be used either for matching or accounting, eg.
      
       # nft add rule filter postrouting \
      	ip daddr 192.168.1.0/24 rt nexthop != 192.168.0.1 drop
      
      This will drop any traffic to 192.168.1.0/24 that is not routed via
      192.168.0.1.
      
       # nft add rule filter postrouting \
      	flow table acct { rt nexthop timeout 600s counter }
       # nft add rule ip6 filter postrouting \
      	flow table acct { rt nexthop timeout 600s counter }
      
      These rules count outgoing traffic per nexthop. Note that the timeout
      releases an entry if no traffic is seen for this nexthop within 10 minutes.
      
       # nft add rule inet filter postrouting \
      	ether type ip \
      	flow table acct { rt nexthop timeout 600s counter }
       # nft add rule inet filter postrouting \
      	ether type ip6 \
      	flow table acct { rt nexthop timeout 600s counter }
      
      Same as above, but via the inet family, where the ether type must be
      specified explicitly.
      
      "rt classid" is also implemented identical to "meta rtclassid", since it
      is more logical to have this match in the routing expression going forward.
      Signed-off-by: NAnders K. Pedersen <akp@cohaesio.com>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      2fa84193
    • P
      netfilter: move socket lookup infrastructure to nf_socket_ipv{4,6}.c · 8db4c5be
      Pablo Neira Ayuso 提交于
      We need this split to reuse existing codebase for the upcoming nf_tables
      socket expression.
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      8db4c5be
    • P
      netfilter: nf_log: add packet logging for netdev family · 1fddf4ba
      Pablo Neira Ayuso 提交于
      Move layer 2 packet logging into nf_log_l2packet() that resides in
      nf_log_common.c, so this can be shared by both bridge and netdev
      families.
      
      This patch adds the boiler plate code to register the netdev logging
      family.
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      1fddf4ba
    • F
      netfilter: nf_tables: add fib expression · f6d0cbcf
      Florian Westphal 提交于
      Add FIB expression, supported for ipv4, ipv6 and inet family (the latter
      just dispatches to ipv4 or ipv6 one based on nfproto).
      
      Currently supports fetching output interface index/name and the
      rtm_type associated with an address.
      
      This can be used for adding path filtering. rtm_type is useful
      to e.g. enforce a strong-end host model where packets
      are only accepted if daddr is configured on the interface the
      packet arrived on.
      
      The fib expression is a native nftables alternative to the
      xtables addrtype and rp_filter matches.
      
      FIB result order for oif/oifname retrieval is as follows:
       - if packet is local (skb has rtable, RTF_LOCAL set, this
         will also catch looped-back multicast packets), set oif to
         the loopback interface.
       - if fib lookup returns an error, or result points to local,
         store zero result.  This means '--local' option of -m rpfilter
         is not supported. It is possible to use 'fib type local' or add
         explicit saddr/daddr matching rules to create exceptions if this
         is really needed.
       - store result in the destination register.
         In case of multiple routes, search set for desired oif in case
         strict matching is requested.
      
      ipv4 and ipv6 behave fib expressions are supposed to behave the same.
      
      [ I have collapsed Arnd Bergmann's ("netfilter: nf_tables: fib warnings")
      
      	http://patchwork.ozlabs.org/patch/688615/
      
        to address fallout from this patch after rebasing nf-next, that was
        posted to address compilation warnings. --pablo ]
      Signed-off-by: NFlorian Westphal <fw@strlen.de>
      Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
      f6d0cbcf
    • W
      genetlink: fix error return code in genl_register_family() · 22ca904a
      Wei Yongjun 提交于
      Fix to return a negative error code from the idr_alloc() error handling
      case instead of 0, as done elsewhere in this function.
      
      Also fix the return value check of idr_alloc() since idr_alloc return
      negative errors on failure, not zero.
      
      Fixes: 2ae0f17d ("genetlink: use idr to track families")
      Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      22ca904a
  3. 01 11月, 2016 21 次提交