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60 lines
2.0 KiB
Diff
60 lines
2.0 KiB
Diff
From 6573cd78f66293e365fe857f88f7a33bc70311d8 Mon Sep 17 00:00:00 2001
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From: Stefan Hajnoczi <stefanha@redhat.com>
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Date: Thu, 28 Jul 2016 15:36:30 +0100
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Subject: [PATCH 05/44] VSOCK: transport-specific vsock_transport functions
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struct vsock_transport contains function pointers called by AF_VSOCK
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core code. The transport may want its own transport-specific function
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pointers and they can be added after struct vsock_transport.
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Allow the transport to fetch vsock_transport. It can downcast it to
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access transport-specific function pointers.
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The virtio transport will use this.
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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(cherry picked from commit 0b01aeb3d2fbf16787f0c9629f4ca52ae792f732)
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---
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include/net/af_vsock.h | 3 +++
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net/vmw_vsock/af_vsock.c | 9 +++++++++
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2 files changed, 12 insertions(+)
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diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h
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index e9eb2d6791b3..23f55259b60d 100644
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--- a/include/net/af_vsock.h
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+++ b/include/net/af_vsock.h
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@@ -165,6 +165,9 @@ static inline int vsock_core_init(const struct vsock_transport *t)
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}
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void vsock_core_exit(void);
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+/* The transport may downcast this to access transport-specific functions */
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+const struct vsock_transport *vsock_core_get_transport(void);
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+
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/**** UTILS ****/
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void vsock_release_pending(struct sock *pending);
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diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
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index b96ac918e0ba..e34d96f8bde2 100644
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--- a/net/vmw_vsock/af_vsock.c
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+++ b/net/vmw_vsock/af_vsock.c
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@@ -1995,6 +1995,15 @@ void vsock_core_exit(void)
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}
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EXPORT_SYMBOL_GPL(vsock_core_exit);
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+const struct vsock_transport *vsock_core_get_transport(void)
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+{
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+ /* vsock_register_mutex not taken since only the transport uses this
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+ * function and only while registered.
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+ */
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+ return transport;
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+}
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+EXPORT_SYMBOL_GPL(vsock_core_get_transport);
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+
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MODULE_AUTHOR("VMware, Inc.");
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MODULE_DESCRIPTION("VMware Virtual Socket Family");
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MODULE_VERSION("1.0.1.0-k");
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--
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2.12.2
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