On Tue, May 14, 2013 at 2:02 PM, Eugene Grosbein <egrosb...@rdtc.ru> wrote: > > I've needed this feature several years ago so I made a patch for igb(4) and > em(4) drivers. > The patch introduces new per-interface sysctls with default zero values: > > dev.em.X.down_disables_link > dev.igb.X.down.disables_link > > With this patch, sysctl dev.em.0.down_disables_link=1 makes "ifconfig em0 > down" bring link down. > For LACP mode this feature is very useful as it makes LACP peer reconfigure > itself quickly. >
Great ! but what about adding a generic ifconfig mediaopt option in place of adding another new sysctl ? Something like "poweroff", "linkdown" or your "disablelink" as example. Because with this kind of sysctl values we can imagine a non-homogeneous future: We have already this problem with flow-control on em(4). The sysctl option for configuring flowcontrol on em(4) (no idea how to configure it with other drivers) are: - dev.em.0.fc (if chipset depends of if_em.c) - dev.em.0.flow_control (if chipset depends of if_lem.c) => By using ifconfig like "ifconfig INTERFACE mediaopt flowcontrol off|rx|tx|full" we could prevent different sysctl names between all NIC drivers. Regards, Olivier _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
