This is the follow-up announced in the receive queue hint series [1]: SO_INQ and SCM_INQ for AF_VSOCK stream sockets, as AF_UNIX has.
The value is the one SIOCINQ returns, so on Hyper-V it covers the current packet only. The flag is per socket, is not inherited by accepted sockets, and the sockmap receive path does not report it. Tested over loopback with vsock_test and vsock_uring_test. [1] https://lore.kernel.org/netdev/[email protected]/ David Carlier (2): vsock: support SO_INQ on stream sockets vsock/test: cover SO_INQ include/net/af_vsock.h | 1 + net/vmw_vsock/af_vsock.c | 41 +++++-- tools/testing/vsock/vsock_test.c | 191 +++++++++++++++++++++++++++++++ 3 files changed, 224 insertions(+), 9 deletions(-) base-commit: a4057f51efc2b74ddf46721e83f45e9efb13649d -- 2.55.0
