• Robert Love's avatar
    [SCSI] libfcoe: Add fcoe_sysfs · 9a74e884
    Robert Love authored
    This patch adds a 'fcoe bus' infrastructure to the kernel
    that is driven by changes to libfcoe which allow LLDs to
    present FIP (FCoE Initialization Protocol) discovered
    entities and their attributes to user space via sysfs.
    This patch adds the following APIs-
    They allow the LLD to expose the FCoE ENode Controller
    and any discovered FCFs (Fibre Channel Forwarders, e.g.
    FCoE switches) to the user. Each of these new devices
    has their own bus_type so that they are grouped together
    for easy lookup from a user space application. Each
    new class has an attribute_group to expose attributes
    for any created instances. The attributes are-
    * fcf_dev_loss_tmo
    * lesb_link_fail
    * lesb_vlink_fail
    * lesb_miss_fka
    * lesb_symb_err
    * lesb_err_block
    * lesb_fcs_error
    * fabric_name
    * switch_name
    * priority
    * selected
    * fc_map
    * vfid
    * mac
    * fka_peroid
    * fabric_state
    * dev_loss_tmo
    A device loss infrastructre similar to the FC Transport's
    is also added by this patch. It is nice to have so that a
    link flapping adapter doesn't continually advance the count
    used to identify the discovered FCF. FCFs will exist in a
    "Disconnected" state until either the timer expires or the
    FCF is rediscovered and becomes "Connected."
    This patch generates a few checkpatch.pl WARNINGS that
    I'm not sure what to do about. They're macros modeled
    around the FC Transport attribute building macros, which
    have the same 'feature' where the caller can ommit a cast
    in the argument list and no cast occurs in the code. I'm
    not sure how to keep the code condensed while keeping the
    macros. Any advice would be appreciated.
    Signed-off-by: default avatarRobert Love <robert.w.love@intel.com>
    Tested-by: default avatarRoss Brattain <ross.b.brattain@intel.com>
    Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
Makefile 123 Bytes