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  1. 01 Apr, 2020 1 commit
  3. 28 Mar, 2020 2 commits
    • Trond Myklebust's avatar
      Merge tag 'nfs-rdma-for-5.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfs · f764a1e1
      Trond Myklebust authored 
      NFSoRDMA Client Updates for Linux 5.7

New Features:
- Allow one active connection and several zombie connections to prevent
  blocking if the remote server is unresponsive.

Bugfixes and Cleanups:
- Enhance MR-related trace points
- Refactor connection set-up and disconnect functions
- Make Protection Domains per-connection instead of per-transport
- Merge struct rpcrdma_ia into rpcrdma_ep
      f764a1e1
    • Trond Myklebust's avatar
      NFS: Remove unused FLUSH_SYNC support in nfs_initiate_pgio() · 1de3af98
      Trond Myklebust authored 
      If the FLUSH_SYNC flag is set, nfs_initiate_pgio() will currently
wait for completion, and then return the status of the I/O operation.
What we actually want to report in nfs_pageio_doio() is whether or
not the RPC call was launched successfully, whereas actual I/O
status is intended handled in the reply callbacks.

Since FLUSH_SYNC is never set by any of the callers anyway, let's
just remove that code altogether.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
      1de3af98
  5. 27 Mar, 2020 31 commits
  7. 26 Mar, 2020 4 commits
    • Trond Myklebust's avatar
      pNFS: Add a helper to allocate the array of buckets · d7242c46
      Trond Myklebust authored 
      Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
      d7242c46
    • Trond Myklebust's avatar
      NFS/pNFS: Refactor pnfs_generic_commit_pagelist() · 19573c93
      Trond Myklebust authored 
      Refactor pnfs_generic_commit_pagelist() to simplify the conversion
to layout segment based commit lists.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
      19573c93
    • Trond Myklebust's avatar
      pNFS/flexfiles: Simplify allocation of the mirror array · 329651b1
      Trond Myklebust authored 
      Just allocate the array at the end of the layout segment structure,
instead of allocating it as a separate array of pointers.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
      329651b1
    • Olga Kornievskaia's avatar
      SUNRPC: fix krb5p mount to provide large enough buffer in rq_rcvsize · df513a77
      Olga Kornievskaia authored 
      Ever since commit 2c94b8ec ("SUNRPC: Use au_rslack when computing
reply buffer size"). It changed how "req->rq_rcvsize" is calculated. It
used to use au_cslack value which was nice and large and changed it to
au_rslack value which turns out to be too small.

Since 5.1, v3 mount with sec=krb5p fails against an Ontap server
because client's receive buffer it too small.

For gss krb5p, we need to account for the mic token in the verifier,
and the wrap token in the wrap token.

RFC 4121 defines:
mic token
Octet no   Name        Description
         --------------------------------------------------------------
         0..1     TOK_ID     Identification field.  Tokens emitted by
                             GSS_GetMIC() contain the hex value 04 04
                             expressed in big-endian order in this
                             field.
         2        Flags      Attributes field, as described in section
                             4.2.2.
         3..7     Filler     Contains five octets of hex value FF.
         8..15    SND_SEQ    Sequence number field in clear text,
                             expressed in big-endian order.
         16..last SGN_CKSUM  Checksum of the "to-be-signed" data and
                             octet 0..15, as described in section 4.2.4.

that's 16bytes (GSS_KRB5_TOK_HDR_LEN) + chksum

wrap token
Octet no   Name        Description
         --------------------------------------------------------------
          0..1     TOK_ID    Identification field.  Tokens emitted by
                             GSS_Wrap() contain the hex value 05 04
                             expressed in big-endian order in this
                             field.
          2        Flags     Attributes field, as described in section
                             4.2.2.
          3        Filler    Contains the hex value FF.
          4..5     EC        Contains the "extra count" field, in big-
                             endian order as described in section 4.2.3.
          6..7     RRC       Contains the "right rotation count" in big-
                             endian order, as described in section
                             4.2.5.
          8..15    SND_SEQ   Sequence number field in clear text,
                             expressed in big-endian order.
          16..last Data      Encrypted data for Wrap tokens with
                             confidentiality, or plaintext data followed
                             by the checksum for Wrap tokens without
                             confidentiality, as described in section
                             4.2.4.

Also 16bytes of header (GSS_KRB5_TOK_HDR_LEN), encrypted data, and cksum
(other things like padding)

RFC 3961 defines known cksum sizes:
Checksum type              sumtype        checksum         section or
                                value            size         reference
   ---------------------------------------------------------------------
   CRC32                            1               4           6.1.3
   rsa-md4                          2              16           6.1.2
   rsa-md4-des                      3              24           6.2.5
   des-mac                          4              16           6.2.7
   des-mac-k                        5               8           6.2.8
   rsa-md4-des-k                    6              16           6.2.6
   rsa-md5                          7              16           6.1.1
   rsa-md5-des                      8              24           6.2.4
   rsa-md5-des3                     9              24             ??
   sha1 (unkeyed)                  10              20             ??
   hmac-sha1-des3-kd               12              20            6.3
   hmac-sha1-des3                  13              20             ??
   sha1 (unkeyed)                  14              20             ??
   hmac-sha1-96-aes128             15              20         [KRB5-AES]
   hmac-sha1-96-aes256             16              20         [KRB5-AES]
   [reserved]                  0x8003               ?         [GSS-KRB5]

Linux kernel now mainly supports type 15,16 so max cksum size is 20bytes.
(GSS_KRB5_MAX_CKSUM_LEN)

Re-use already existing define of GSS_KRB5_MAX_SLACK_NEEDED that's used
for encoding the gss_wrap tokens (same tokens are used in reply).

Fixes: 2c94b8ec ("SUNRPC: Use au_rslack when computing reply buffer size")
Signed-off-by: default avatarOlga Kornievskaia <kolga@netapp.com>
Reviewed-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
      df513a77
  9. 25 Mar, 2020 2 commits
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