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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-10-16 07:29:37 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-10-16 07:29:37 +0200 |
commit | 43dc972cbc261ebafc8ebea5d08fc07ba74fdf34 (patch) | |
tree | 0187a993ed250a611b5b608e69527002f60b4fb1 /libbsd.txt | |
parent | SYSLOG(3): Replace implementation (diff) | |
download | rtems-libbsd-43dc972cbc261ebafc8ebea5d08fc07ba74fdf34.tar.bz2 |
doc: Add network interface link up/down hint
Diffstat (limited to 'libbsd.txt')
-rw-r--r-- | libbsd.txt | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -274,6 +274,17 @@ http://www.freebsd.org/cgi/man.cgi?query=resolver&sektion=3&apropos=0&manpath=Fr http://www.freebsd.org/cgi/man.cgi?query=gethostbyname&sektion=3&apropos=0&manpath=FreeBSD+9.2-RELEASE[GETHOSTBYNAME(3)]:: Get network host entry +== Network Interface Drivers + +=== Link Up/Down Events + +You can notifiy the application space of link up/down events in your network +interface driver via the if_link_state_change(LINK_STATE_UP/LINK_STATE_DOWN) +function. The DHCPCD(8) client is a consumer of these events for example. +Make sure that the interface flag IFF_UP and the interface driver flag +IFF_DRV_RUNNING is set in case the link is up, otherwise ether_output() will +return the error status ENETDOWN. + == Issues and TODO * Per-CPU data should be enabled once the new stack is ready for SMP. |