Jeremy Kerr 99ce45d5e7
mctp: Implement extended addressing ...
This change allows an extended address struct - struct sockaddr_mctp_ext
- to be passed to sendmsg/recvmsg. This allows userspace to specify
output ifindex and physical address information (for sendmsg) or receive
the input ifindex/physaddr for incoming messages (for recvmsg). This is
typically used by userspace for MCTP address discovery and assignment
operations.
The extended addressing facility is conditional on a new sockopt:
MCTP_OPT_ADDR_EXT; userspace must explicitly enable addressing before
the kernel will consume/populate the extended address data.
Includes a fix for an uninitialised var:
Reported-by: kernel test robot <lkp@intel.com >
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au >
Signed-off-by: David S. Miller <davem@davemloft.net >
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99ce45d5e7