• Thomas Richter's avatar
    smc: establish pnet table management · 6812baab
    Thomas Richter authored
    Connection creation with SMC-R starts through an internal
    TCP-connection. The Ethernet interface for this TCP-connection is not
    restricted to the Ethernet interface of a RoCE device. Any existing
    Ethernet interface belonging to the same physical net can be used, as
    long as there is a defined relation between the Ethernet interface and
    some RoCE devices. This relation is defined with the help of an
    identification string called "Physical Net ID" or short "pnet ID".
    Information about defined pnet IDs and their related Ethernet
    interfaces and RoCE devices is stored in the SMC-R pnet table.
    
    A pnet table entry consists of the identifying pnet ID and the
    associated network and IB device.
    This patch adds pnet table configuration support using the
    generic netlink message interface referring to network and IB device
    by their names. Commands exist to add, delete, and display pnet table
    entries, and to flush or display the entire pnet table.
    
    There are cross-checks to verify whether the ethernet interfaces
    or infiniband devices really exist in the system. If either device
    is not available, the pnet ID entry is not created.
    Loss of network devices and IB devices is also monitored;
    a pnet ID entry is removed when an associated network or
    IB device is removed.
    Signed-off-by: default avatarThomas Richter <tmricht@linux.vnet.ibm.com>
    Signed-off-by: default avatarUrsula Braun <ubraun@linux.vnet.ibm.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    6812baab
af_smc.c 13.7 KB