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authorStefan Hajnoczi <stefanha@redhat.com>2017-10-05 16:46:53 -0400
committerDavid S. Miller <davem@davemloft.net>2017-10-05 18:44:17 -0700
commit413a4317aca7d6367d57a5971b0c461f03851207 (patch)
treecf1b8a4ac209b5ce6ef8aaf861f84bc8279cf4d8 /tools
parentVSOCK: use TCP state constants for sk_state (diff)
VSOCK: add sock_diag interface
This patch adds the sock_diag interface for querying sockets from userspace. Tools like ss(8) and netstat(8) can use this interface to list open sockets. The userspace ABI is defined in <linux/vm_sockets_diag.h> and includes netlink request and response structs. The request can query sockets based on their sk_state (e.g. listening sockets only) and the response contains socket information fields including the local/remote addresses, inode number, etc. This patch does not dump VMCI pending sockets because I have only tested the virtio transport, which does not use pending sockets. Support can be added later by extending vsock_diag_dump() if needed by VMCI users. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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