BMC/Intel-BMC/linux.git/net/ncsi/ncsi-cmd.c, branch devIntel OpenBMC Linux kernel source tree (mirror)https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev2015-10-06T03:50:03+00:00net/ncsi: Packet handler2015-10-06T03:50:03+00:00Gavin Shangwshan@linux.vnet.ibm.com2015-10-06T02:52:39+00:00urn:sha1:95b4c4d49ca7eac358e533ae8a66e434a1c76e17
NCSI packet encapsulated in ethernet frame is recognized by the
ethernet protocol field (0x88F8). According to NCSI spec, the
destination MAC field should be 0xFF's, but the source MAC field
could be arbitrary one since channel field in NCSI header indicates
the source of the packet.
There are 3 types of packets depending on the type field in the NCSI
packet header: command, response, Asynchronous Event Notification
(AEN). The command packets are sent from NCSI enabled interace to
the NCSI package or channel for purpose of information retrival or
configuration. The response packets, as responses to the received
command packets, originate from NCSI package or channel and terminate
at NCSI enabled interface. AEN packets are sent from NCSI channel
for asynchronous events that might indicate failure detected on
the active channel.
This implements the functions to handle NCSI packets.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>