Re: [PATCH net-next 5/6] vsock: use local transport when it is loaded
From: Stefan Hajnoczi <hidden>
Date: 2019-11-21 09:46:23
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kvm, lkml
On Tue, Nov 19, 2019 at 12:01:20PM +0100, Stefano Garzarella wrote:
quoted hunk ↗ jump to hunk
@@ -420,9 +436,10 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk) new_transport = transport_dgram; break; case SOCK_STREAM: - if (remote_cid <= VMADDR_CID_HOST || - (transport_g2h && - remote_cid == transport_g2h->get_local_cid())) + if (vsock_use_local_transport(remote_cid)) + new_transport = transport_local; + else if (remote_cid == VMADDR_CID_HOST || + remote_cid == VMADDR_CID_HYPERVISOR) new_transport = transport_g2h; else new_transport = transport_h2g;
We used to send VMADDR_CID_RESERVED to the host. Now we send VMADDR_CID_RESERVED (LOCAL) to the guest when there is no transport_local loaded? If this is correct, is there a justification for this change? It seems safest to retain existing behavior.
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