Eric Lee / smarc-ti-linux-kernel

17 Apr, 2014

1 commit

19 Feb, 2014

1 commit

  • 01325476d   Drivers: hv: Implement the file copy service ... Browse Code »

    Implement the file copy service for Linux guests on Hyper-V. This permits the
    host to copy a file (over VMBUS) into the guest. This facility is part of
    "guest integration services" supported on the Windows platform.
    Here is a link that provides additional details on this functionality:

    http://technet.microsoft.com/en-us/library/dn464282.aspx

    In V1 version of the patch I have addressed comments from
    Olaf Hering and Dan Carpenter

    In V2 version of this patch I did some minor cleanup (making some globals
    static). In V4 version of the patch I have addressed all of Olaf's
    most recent set of comments/concerns.

    In V5 version of the patch I had addressed Greg's most recent comments.
    I would like to thank Greg for suggesting that I use misc device; it has
    significantly simplified the code.

    In V6 version of the patch I have cleaned up error message based on Olaf's
    comments. I have also rebased the patch based on the current tip.

    In this version of the patch, I have addressed the latest comments from Greg.

    Signed-off-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    K. Y. Srinivasan
     

16 Feb, 2014

2 commits

09 Dec, 2013

1 commit

  • 51b68128e   Tools: hv: remove inclusion of linux/types.h ... Browse Code »

    With very old libc headers the inclusion of sys/types.h causes conflicts
    with linux/types.h. Since the latter is not required anyway, remove it
    from the source files. If any of the headers really needs linux/types.h
    it has to include it itself.

    Signed-off-by: Olaf Hering
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     

27 Sep, 2013

2 commits

  • 269ce62bb   Tools: hv: use single send+recv buffer ... Browse Code »

    send_buffer is used only once during registration. To reduce runtime
    memory usage reuse the recv_buffer for registration. Also use
    NLMSG_LENGTH instead of NLMSG_HDRLEN to take alignment into account.

    Signed-off-by: Olaf Hering
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     
  • 58125210a   Tools: hv: cache FQDN in kvp_daemon to avoid timeouts ... Browse Code »

    kvp_daemon does some operations which take an unpredicable amount of
    time. In addition the kernel driver gives the kvp_daemon a 5 second
    timeout to respond to message from the host. If an operation such as
    getaddrinfo takes a long time and the timeout triggers then netlink
    errors occour. As a result of such errors the daemon just terminates and
    the service becomes unavailable.

    Idendifying and fixing these shortcomings in the kernel-userland
    communication protocol will be done in separate patches. This change
    fixes just one obvious timeout bug.

    Update kvp_get_domain_name to not return a value, better diagnostic for
    the consumer of the hostname string, remove trailing newline in error
    case, use snprintf to not overrun output buffer, get hostname only once
    and return the cached result.

    Signed-off-by: Olaf Hering
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     

13 Aug, 2013

2 commits

  • b4fb0ca26   Tools: hv: use full nlmsghdr in netlink_send ... Browse Code »

    There is no need to have a nlmsghdr pointer to another temporary buffer.
    Instead use a full struct nlmsghdr.

    Signed-off-by: Olaf Hering
    Signed-off-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     
  • 2bc41ea3b   Tools: hv: correct payload size in netlink_send ... Browse Code »

    netlink_send is supposed to send just the cn_msg+hv_kvp_msg via netlink.
    Currently it sets an incorrect iovec size, as reported by valgrind.

    In the case of registering with the kernel the allocated buffer is large
    enough to hold nlmsghdr+cn_msg+hv_kvp_msg, no overrun happens. In the
    case of responding to the kernel the cn_msg is located in the middle of
    recv_buffer, after the nlmsghdr. Currently the code in netlink_send adds
    also the size of nlmsghdr to the payload. But nlmsghdr is a separate
    iovec. This leads to an (harmless) out-of-bounds access when the kernel
    processes the iovec. Correct the iovec size of the cn_msg to be just
    cn_msg + its payload.

    Signed-off-by: Olaf Hering
    Signed-off-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     

05 Aug, 2013

2 commits

02 Aug, 2013

2 commits

  • 00663d73e   Tools: hv: check return value of daemon to fix compiler warning. ... Browse Code »

    hv_kvp_daemon.c: In function 'main':
    hv_kvp_daemon.c:1441:8: warning: ignoring return value of 'daemon', declared with attribute warn_unused_result [-Wunused-result]

    Signed-off-by: Olaf Hering
    Signed-off-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     
  • b4919a5f9   Tools: hv: fix send/recv buffer allocation ... Browse Code »

    hv_kvp_daemon fails to start in current openSuSE 13.1 snapshots because
    the kvp_send_buffer is too small to hold cn_msg+hv_kvp_msg, the very
    first sendmsg returns with EFAULT. In addition it fixes the Network info
    tab in Windows Server 2012R2 in SLES11.

    Adjust the code in kvp and vss daemon to allocate the needed buffers at
    runtime. To keep the code simple, the buffer_len includes also the
    nlmsghdr, although only the recv_buffer needs this extra space.

    Signed-off-by: Olaf Hering
    Signed-off-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Olaf Hering
     

30 Jul, 2013

1 commit

27 Jul, 2013

3 commits

17 Jul, 2013

1 commit

18 Jun, 2013

1 commit

04 Jun, 2013

4 commits

25 Apr, 2013

7 commits

16 Mar, 2013

4 commits

  • 96dd86fa5   Drivers: hv: Add a new driver to support host initiated backup ... Browse Code »

    This driver supports host initiated backup of the guest. On Windows guests,
    the host can generate application consistent backups using the Windows VSS
    framework. On Linux, we ensure that the backup will be file system consistent.
    This driver allows the host to initiate a "Freeze" operation on all the mounted
    file systems in the guest. Once the mounted file systems in the guest are frozen,
    the host snapshots the guest's file systems. Once this is done, the guest's file
    systems are "thawed".

    This driver has a user-level component (daemon) that invokes the appropriate
    operation on all the mounted file systems in response to the requests from
    the host. The duration for which the guest is frozen is very short - a few seconds.
    During this interval, the diff disk is comitted.

    In this version of the patch I have addressed the feedback from Olaf Herring.
    Also, some of the connector related issues have been fixed.

    Signed-off-by: K. Y. Srinivasan
    Reviewed-by: Haiyang Zhang
    Cc: Evgeniy Polyakov
    Signed-off-by: Greg Kroah-Hartman

    K. Y. Srinivasan
     
  • 75db60149   tools: hv: daemon should check type of received Netlink msg ... Browse Code »

    HyperV KVP daemon should check nlmsg_type in received netlink message
    header. If message type is NLMSG_DONE daemon can proceed with processing
    otherwise it should wait for next message.

    Signed-off-by: Tomas Hozza
    Acked-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Tomas Hozza
     
  • f4685fa6d   tools: hv: daemon setsockopt should use options macros ... Browse Code »

    HyperV daemon should use macros for option values when calling setsockopt.
    Using specific numeric values instead of macros is confusing.

    Signed-off-by: Tomas Hozza
    Acked-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Tomas Hozza
     
  • 77d6a5289   tools: hv: daemon should subscribe only to CN_KVP_IDX group ... Browse Code »

    Previously HyperV daemon set sockaddr_nl.nl_groups to CN_KVP_IDX.
    Netlink documentation says: "nl_groups is a bit mask with every bit
    representing a netlink group number". Since CN_KVP_IDX value is "9"
    HyperV daemon was receiving Netlink messages also from group number
    "1" which is used by CGroup Rules Engine Daemon. This caused the
    daemon to segfault (at least on 2.6.32 kernel).

    HyperV daemon should set nl_groups to zero and specify multicast
    group CN_KVP_IDX only by using socket options.

    Signed-off-by: Tomas Hozza
    Acked-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Tomas Hozza
     

19 Jan, 2013

1 commit

18 Jan, 2013

4 commits

16 Nov, 2012

1 commit

  • d892de8d3   tools/hv: Fix string types ... Browse Code »

    Initial patch by Ben Hutchings

    Standard C strings are arrays of char, not __u8 (unsigned char).
    Declare variables and parameters accordingly, and add the necessary
    casts.

    Signed-off-by: Tomas Hozza
    Acked-by: K. Y. Srinivasan
    Signed-off-by: Greg Kroah-Hartman

    Tomas Hozza