1. 17 Apr, 2016 16 commits
  2. 16 Apr, 2016 17 commits
  3. 15 Apr, 2016 7 commits
    • David S. Miller's avatar
      Merge branch 'sctp-diag' · 4e811b1e
      David S. Miller authored
      Xin Long says:
      
      ====================
      sctp: support sctp_diag in kernel
      
      This patchset will add sctp_diag module to implement diag interface on
      sctp in kernel.
      
      For a listening sctp endpoint, we will just dump it's ep info.
      For a sctp connection, we will the assoc info and it's ep info.
      
      The ss dump will looks like:
      
      [iproute2]# ./misc/ss --sctp  -n -l
      State      Recv-Q Send-Q   Local Address:Port       Peer Address:Port
      LISTEN     0      128      172.16.254.254:8888      *:*
      LISTEN     0      5        127.0.0.1:1234           *:*
      LISTEN     0      5        127.0.0.1:1234           *:*
        - ESTAB  0      0        127.0.0.1%lo:1234        127.0.0.1:4321
      LISTEN     0      128      172.16.254.254:8888      *:*
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.253.253:8888
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.1.1:8888
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.1.2:8888
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.2.1:8888
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.2.2:8888
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.3.1:8888
        - ESTAB  0      0        172.16.254.254%eth1:8888 172.16.3.2:8888
      LISTEN     0      0        127.0.0.1:4321           *:*
        - ESTAB  0      0        127.0.0.1%lo:4321        127.0.0.1:1234
      
      The entries with '- ESTAB' are the assocs, some of them may belong to
      the same endpoint. So we will dump the parent endpoint first, like the
      entry with 'LISTEN'. then dump the assocs. ep and assocs entries will
      be dumped in right order so that ss can show them in tree format easily.
      
      Besides, this patchset also simplifies sctp proc codes, cause it has
      some similar codes with sctp diag in sctp transport traversal.
      
      v1->v2:
        1. inet_diag_get_handler needs to return it as const.
        2. merge 5/7 into 2/7 of v1.
      
      v2->v3:
        do some improvements and fixes in patch 1-4, see the details in
        each patch's comment.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4e811b1e
    • Xin Long's avatar
      sctp: fix some rhashtable functions using in sctp proc/diag · 53fa1036
      Xin Long authored
      When rhashtable_walk_init return err, no release function should be
      called, and when rhashtable_walk_start return err, we should only invoke
      rhashtable_walk_exit to release the source.
      
      But now when sctp_transport_walk_start return err, we just call
      rhashtable_walk_stop/exit, and never care about if rhashtable_walk_init
      or start return err, which is so bad.
      
      We will fix it by calling rhashtable_walk_exit if rhashtable_walk_start
      return err in sctp_transport_walk_start, and if sctp_transport_walk_start
      return err, we do not need to call sctp_transport_walk_stop any more.
      
      For sctp proc, we will use 'iter->start_fail' to decide if we will call
      rhashtable_walk_stop/exit.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      53fa1036
    • Xin Long's avatar
      sctp: merge the seq_start/next/exits in remaddrs and assocs · b5e2f4e6
      Xin Long authored
      In sctp proc, these three functions in remaddrs and assocs are the
      same. we should merge them into one.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b5e2f4e6
    • Xin Long's avatar
      sctp: add the sctp_diag.c file · 8f840e47
      Xin Long authored
      This one will implement all the interface of inet_diag, inet_diag_handler.
      which includes sctp_diag_dump, sctp_diag_dump_one and sctp_diag_get_info.
      
      It will work as a module, and register inet_diag_handler when loading.
      
      v2->v3:
      - fix the mistake in inet_assoc_attr_size().
      
      - change inet_diag_msg_laddrs_fill() name to inet_diag_msg_sctpladdrs_fill.
      
      - change inet_diag_msg_paddrs_fill() name to inet_diag_msg_sctpaddrs_fill.
      
      - add inet_diag_msg_sctpinfo_fill() to make asoc/ep fill code clearer.
      
      - add inet_diag_msg_sctpasoc_fill() to make asoc fill code clearer.
      
      - merge inet_asoc_diag_fill() and inet_ep_diag_fill() to
        inet_sctp_diag_fill().
      
      - call sctp_diag_get_info() directly, instead by handler, cause the caller
        is in the same file with it.
      
      - call lock_sock in sctp_tsp_dump_one() to make sure we call get sctp info
        safely.
      
      - after lock_sock(sk), we should check sk != assoc->base.sk.
      
      - change mem[SK_MEMINFO_WMEM_ALLOC] to asoc->sndbuf_used for asoc dump when
        asoc->ep->sndbuf_policy is set. don't use INET_DIAG_MEMINFO attr any more.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8f840e47
    • Xin Long's avatar
      sctp: export some functions for sctp_diag in inet_diag · cb2050a7
      Xin Long authored
      inet_diag_msg_common_fill is used to fill the diag msg common info,
      we need to use it in sctp_diag as well, so export it.
      
      inet_diag_msg_attrs_fill is used to fill some common attrs info between
      sctp diag and tcp diag.
      
      v2->v3:
      - do not need to define and export inet_diag_get_handler any more.
        cause all the functions in it are in sctp_diag.ko, we just call
        them in sctp_diag.ko.
      
      - add inet_diag_msg_attrs_fill to make codes clear.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cb2050a7
    • Xin Long's avatar
      sctp: export some apis or variables for sctp_diag and reuse some for proc · 626d16f5
      Xin Long authored
      For some main variables in sctp.ko, we couldn't export it to other modules,
      so we have to define some api to access them.
      
      It will include sctp transport and endpoint's traversal.
      
      There are some transport traversal functions for sctp_diag, we can also
      use it for sctp_proc. cause they have the similar situation to traversal
      transport.
      
      v2->v3:
      - rhashtable_walk_init need the parameter gfp, because of recent upstrem
        update
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      626d16f5
    • Xin Long's avatar
      sctp: add sctp_info dump api for sctp_diag · 52c52a61
      Xin Long authored
      sctp_diag will dump some important details of sctp's assoc or ep, we use
      sctp_info to describe them,  sctp_get_sctp_info to get them, and export
      it to sctp_diag.ko.
      
      v2->v3:
      - we will not use list_for_each_safe in sctp_get_sctp_info, cause
        all the callers of it will use lock_sock.
      
      - fix the holes in struct sctp_info with __reserved* field.
        because sctp_diag is a new feature, and sctp_info is just for now,
        it may be changed in the future.
      Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      52c52a61