static_branch_enable(&tcp_have_smc);
return 0;
+#if IS_ENABLED(CONFIG_IPV6)
+out_inet_prot:
+ inet_unregister_protosw(&smc_inet_protosw);
+ proto_unregister(&smc_inet_prot);
+#endif
+out_ulp:
+ tcp_unregister_ulp(&smc_ulp_ops);
out_lo:
smc_loopback_exit();
out_ib:
@@ -3633,6 +3656,10 @@ static int __init smc_init(void)
static void __exit smc_exit(void)
{
static_branch_disable(&tcp_have_smc);
+ inet_unregister_protosw(&smc_inet_protosw);
+#if IS_ENABLED(CONFIG_IPV6)
+ inet6_unregister_protosw(&smc_inet6_protosw);
+#endif
tcp_unregister_ulp(&smc_ulp_ops);
sock_unregister(PF_SMC);
smc_core_exit();
@@ -3644,6 +3671,10 @@ static void __exit smc_exit(void)
destroy_workqueue(smc_hs_wq);
proto_unregister(&smc_proto6);
proto_unregister(&smc_proto);
+ proto_unregister(&smc_inet_prot);
+#if IS_ENABLED(CONFIG_IPV6)
+ proto_unregister(&smc_inet6_prot);
+#endif
smc_pnet_exit();
smc_nl_exit();
smc_clc_exit();
@@ -3660,4 +3691,9 @@ static void __exit smc_exit(void)
MODULE_LICENSE("GPL");
MODULE_ALIAS_NETPROTO(PF_SMC);
MODULE_ALIAS_TCP_ULP("smc");
+/* 263 for IPPROTO_SMC and 1 for SOCK_STREAM */
+MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 263, 1);
+#if IS_ENABLED(CONFIG_IPV6)
+MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET6, 263, 1);
+#endif
MODULE_ALIAS_GENL_FAMILY(SMC_GENL_FAMILY_NAME);
diff --git a/net/smc/inet_smc.c b/net/smc/inet_smc.c
new file mode 100644
index 00000000..1ba73d7
--- /dev/null
+++ b/net/smc/inet_smc.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Shared Memory Communications over RDMA (SMC-R) and RoCE
+ *
+ * Definitions for the IPPROTO_SMC (socket related)
+ *
+ * Copyright IBM Corp. 2016, 2018
+ * Copyright (c) 2024, Alibaba Inc.
+ *
+ * Author: D. Wythe <alibuda@xxxxxxxxxxxxxxxxx>
+ */
+
+#include "inet_smc.h"
+#include "smc.h"
+
+struct proto smc_inet_prot = {
+ .name = "INET_SMC",
+ .owner = THIS_MODULE,
+ .init = smc_inet_init_sock,
+ .hash = smc_hash_sk,
+ .unhash = smc_unhash_sk,
+ .release_cb = smc_release_cb,
+ .obj_size = sizeof(struct smc_sock),
+ .h.smc_hash = &smc_v4_hashinfo,
+ .slab_flags = SLAB_TYPESAFE_BY_RCU,
+};
+
+const struct proto_ops smc_inet_stream_ops = {
+ .family = PF_INET,
+ .owner = THIS_MODULE,
+ .release = smc_release,
+ .bind = smc_bind,
+ .connect = smc_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = smc_accept,
+ .getname = smc_getname,
+ .poll = smc_poll,
+ .ioctl = smc_ioctl,
+ .listen = smc_listen,
+ .shutdown = smc_shutdown,
+ .setsockopt = smc_setsockopt,
+ .getsockopt = smc_getsockopt,
+ .sendmsg = smc_sendmsg,
+ .recvmsg = smc_recvmsg,
+ .mmap = sock_no_mmap,
+ .splice_read = smc_splice_read,
+};
+
+struct inet_protosw smc_inet_protosw = {
+ .type = SOCK_STREAM,
+ .protocol = IPPROTO_SMC,
+ .prot = &smc_inet_prot,
+ .ops = &smc_inet_stream_ops,
+ .flags = INET_PROTOSW_ICSK,
+};
+
+#if IS_ENABLED(CONFIG_IPV6)
+struct proto smc_inet6_prot = {
+ .name = "INET6_SMC",
+ .owner = THIS_MODULE,
+ .init = smc_inet_init_sock,
+ .hash = smc_hash_sk,
+ .unhash = smc_unhash_sk,
+ .release_cb = smc_release_cb,
+ .obj_size = sizeof(struct smc_sock),
+ .h.smc_hash = &smc_v6_hashinfo,
+ .slab_flags = SLAB_TYPESAFE_BY_RCU,
+};
+
+const struct proto_ops smc_inet6_stream_ops = {
+ .family = PF_INET6,
+ .owner = THIS_MODULE,
+ .release = smc_release,
+ .bind = smc_bind,
+ .connect = smc_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = smc_accept,
+ .getname = smc_getname,
+ .poll = smc_poll,
+ .ioctl = smc_ioctl,
+ .listen = smc_listen,
+ .shutdown = smc_shutdown,
+ .setsockopt = smc_setsockopt,
+ .getsockopt = smc_getsockopt,
+ .sendmsg = smc_sendmsg,
+ .recvmsg = smc_recvmsg,
+ .mmap = sock_no_mmap,
+ .splice_read = smc_splice_read,
+};
+
+struct inet_protosw smc_inet6_protosw = {
+ .type = SOCK_STREAM,
+ .protocol = IPPROTO_SMC,
+ .prot = &smc_inet6_prot,
+ .ops = &smc_inet6_stream_ops,
+ .flags = INET_PROTOSW_ICSK,
+};
+#endif
+
+int smc_inet_init_sock(struct sock *sk)
+{
+ struct net *net = sock_net(sk);
+
+ /* init common smc sock */
+ smc_sk_init(net, sk, IPPROTO_SMC);
+ /* create clcsock */
+ return smc_create_clcsk(net, sk, sk->sk_family);
+}
diff --git a/net/smc/inet_smc.h b/net/smc/inet_smc.h
new file mode 100644
index 00000000..c55345d
--- /dev/null
+++ b/net/smc/inet_smc.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Shared Memory Communications over RDMA (SMC-R) and RoCE
+ *
+ * Definitions for the IPPROTO_SMC (socket related)
+
+ * Copyright IBM Corp. 2016
+ * Copyright (c) 2024, Alibaba Inc.
+ *
+ * Author: D. Wythe <alibuda@xxxxxxxxxxxxxxxxx>
+ */
+#ifndef __INET_SMC
+#define __INET_SMC
+
+#include <net/protocol.h>
+#include <net/sock.h>
+#include <net/tcp.h>
