• Xin Long's avatar
    sctp: add support for dscp and flowlabel per transport · 8a9c58d2
    Xin Long authored
    Like some other per transport params, flowlabel and dscp are added
    in transport, asoc and sctp_sock. By default, transport sets its
    value from asoc's, and asoc does it from sctp_sock. flowlabel
    only works for ipv6 transport.
    
    Other than that they need to be passed down in sctp_xmit, flow4/6
    also needs to set them before looking up route in get_dst.
    
    Note that it uses '& 0x100000' to check if flowlabel is set and
    '& 0x1' (tos 1st bit is unused) to check if dscp is set by users,
    so that they could be set to 0 by sockopt in next patch.
    Signed-off-by: default avatarXin Long <lucien.xin@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    8a9c58d2
sctp.h 22.6 KB