[PATCH RFC net-next v4 2/8] vsock: refactor transport lookup code
From: Bobby Eshleman <hidden>
Date: 2023-06-10 00:58:55
Also in:
bpf, kvm, linux-hyperv, lkml
Subsystem:
networking [general], the rest, vm sockets (af_vsock) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Stefano Garzarella
Introduce new reusable function vsock_connectible_lookup_transport() that performs the transport lookup logic. No functional change intended. Signed-off-by: Bobby Eshleman <redacted> --- net/vmw_vsock/af_vsock.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index ffb4dd8b6ea7..74358f0b47fa 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c@@ -422,6 +422,22 @@ static void vsock_deassign_transport(struct vsock_sock *vsk) vsk->transport = NULL; } +static const struct vsock_transport * +vsock_connectible_lookup_transport(unsigned int cid, __u8 flags) +{ + const struct vsock_transport *transport; + + if (vsock_use_local_transport(cid)) + transport = transport_local; + else if (cid <= VMADDR_CID_HOST || !transport_h2g || + (flags & VMADDR_FLAG_TO_HOST)) + transport = transport_g2h; + else + transport = transport_h2g; + + return transport; +} + /* Assign a transport to a socket and call the .init transport callback. * * Note: for connection oriented socket this must be called when vsk->remote_addr
@@ -462,13 +478,8 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk) break; case SOCK_STREAM: case SOCK_SEQPACKET: - if (vsock_use_local_transport(remote_cid)) - new_transport = transport_local; - else if (remote_cid <= VMADDR_CID_HOST || !transport_h2g || - (remote_flags & VMADDR_FLAG_TO_HOST)) - new_transport = transport_g2h; - else - new_transport = transport_h2g; + new_transport = vsock_connectible_lookup_transport(remote_cid, + remote_flags); break; default: return -ESOCKTNOSUPPORT;
--
2.30.2