diff options
| author | Jeremy Kerr <jk@codeconstruct.com.au> | 2021-10-26 04:57:28 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2022-03-18 03:37:16 +0300 |
| commit | f00785cbf91a3ef807270f2297d6c691a2201a6c (patch) | |
| tree | ae965101ea2388dad20b1a6e13feb85ebb82bef3 /include/uapi | |
| parent | b11452c34c3487e456cff70c051787a7d70dcf12 (diff) | |
| download | linux-f00785cbf91a3ef807270f2297d6c691a2201a6c.tar.xz | |
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>
Backport: exclude SOL_MPTCP
OpenBMC-Staging-Count: 1
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 99ce45d5e7dbde399997a630f45ac9f654fa4bcc)
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/mctp.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/uapi/linux/mctp.h b/include/uapi/linux/mctp.h index 6acd4ccafbf7..07b0318716fc 100644 --- a/include/uapi/linux/mctp.h +++ b/include/uapi/linux/mctp.h @@ -11,6 +11,7 @@ #include <linux/types.h> #include <linux/socket.h> +#include <linux/netdevice.h> typedef __u8 mctp_eid_t; @@ -28,6 +29,14 @@ struct sockaddr_mctp { __u8 __smctp_pad1; }; +struct sockaddr_mctp_ext { + struct sockaddr_mctp smctp_base; + int smctp_ifindex; + __u8 smctp_halen; + __u8 __smctp_pad0[3]; + __u8 smctp_haddr[MAX_ADDR_LEN]; +}; + #define MCTP_NET_ANY 0x0 #define MCTP_ADDR_NULL 0x00 @@ -36,4 +45,6 @@ struct sockaddr_mctp { #define MCTP_TAG_MASK 0x07 #define MCTP_TAG_OWNER 0x08 +#define MCTP_OPT_ADDR_EXT 1 + #endif /* __UAPI_MCTP_H */ |