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authorAlexander V. Chernikov <melifaro@FreeBSD.org>2022-12-03 17:10:50 +0000
committerAlexander V. Chernikov <melifaro@FreeBSD.org>2022-12-09 11:20:07 +0000
commit1bcd230f9508b3c917f26be4b905e4b5141decea (patch)
tree57c7ffb469b0972e3ed6cdb48cc4d42d7e82c482 /release/arm/GENERICSD.conf
parent0ca90ed42a495074392a8316ae58a9bbf4eda01a (diff)
downloadsrc-main.tar.gz
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netlink: add interface notification on link status / flags change.HEADmain
* Add link-state change notifications by subscribing to ifnet_link_event. In the Linux netlink model, link state is reported in 2 places: first is the IFLA_OPERSTATE, which stores state per RFC2863. The second is an IFF_LOWER_UP interface flag. As many applications rely on the latter, reserve 1 bit from if_flags, named as IFF_NETLINK_1. This flag is mapped to IFF_LOWER_UP in the netlink headers. This is done to avoid making applications think this flag is actually supported / presented in non-netlink outputs. * Add flag change notifications, by hooking into rt_ifmsg(). In the netlink model, notification should include the bitmask for the change flags. Update rt_ifmsg() to include such bitmask. Differential Revision: https://reviews.freebsd.org/D37597
Diffstat (limited to 'release/arm/GENERICSD.conf')
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