• Chuck Lever's avatar
    SUNRPC: Add rpc_auth::au_ralign field · 35e77d21
    Chuck Lever authored
    Currently rpc_inline_rcv_pages() uses au_rslack to estimate the
    size of the upper layer reply header. This is fine for auth flavors
    where au_verfsize == au_rslack.
    
    However, some auth flavors have more going on. krb5i for example has
    two more words after the verifier, and another blob following the
    RPC message. The calculation involving au_rslack pushes the upper
    layer reply header too far into the rcv_buf.
    
    au_rslack is still valuable: it's the amount of buffer space needed
    for the reply, and is used when allocating the reply buffer. We'll
    keep that.
    
    But, add a new field that can be used to properly estimate the
    location of the upper layer header in each RPC reply, based on the
    auth flavor in use.
    Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
    Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
    35e77d21