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Date: Thu, 13 Jun 2024 15:19:38 +0800
From: Dust Li <dust.li@...ux.alibaba.com>
To: "D. Wythe" <alibuda@...ux.alibaba.com>, kgraul@...ux.ibm.com,
wenjia@...ux.ibm.com, jaka@...ux.ibm.com, wintera@...ux.ibm.com,
guwen@...ux.alibaba.com
Cc: kuba@...nel.org, davem@...emloft.net, netdev@...r.kernel.org,
linux-s390@...r.kernel.org, linux-rdma@...r.kernel.org,
tonylu@...ux.alibaba.com, pabeni@...hat.com, edumazet@...gle.com
Subject: Re: [PATCH net-next v7 2/3] net/smc: expose smc proto operations
On 2024-06-08 17:12:28, D. Wythe wrote:
>From: "D. Wythe" <alibuda@...ux.alibaba.com>
>
>Externalize smc proto operations (smc_xxx) to allow
>access from files other than af_smc.c
>
>This is in preparation for the subsequent implementation
>of the AF_INET version of SMC.
>
>Signed-off-by: D. Wythe <alibuda@...ux.alibaba.com>
>Reviewed-by: Wenjia Zhang <wenjia@...ux.ibm.com>
>Tested-by: Niklas Schnelle <schnelle@...ux.ibm.com>
>Tested-by: Wenjia Zhang <wenjia@...ux.ibm.com>
Reviewed-by: Dust Li <dust.li@...ux.alibaba.com>
>---
> net/smc/af_smc.c | 60 ++++++++++++++++++++++++++++----------------------------
> net/smc/smc.h | 33 +++++++++++++++++++++++++++++++
> 2 files changed, 63 insertions(+), 30 deletions(-)
>
>diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
>index 77a9d58..8e3ce76 100644
>--- a/net/smc/af_smc.c
>+++ b/net/smc/af_smc.c
>@@ -170,15 +170,15 @@ static bool smc_hs_congested(const struct sock *sk)
> return false;
> }
>
>-static struct smc_hashinfo smc_v4_hashinfo = {
>+struct smc_hashinfo smc_v4_hashinfo = {
> .lock = __RW_LOCK_UNLOCKED(smc_v4_hashinfo.lock),
> };
>
>-static struct smc_hashinfo smc_v6_hashinfo = {
>+struct smc_hashinfo smc_v6_hashinfo = {
> .lock = __RW_LOCK_UNLOCKED(smc_v6_hashinfo.lock),
> };
>
>-static int smc_hash_sk(struct sock *sk)
>+int smc_hash_sk(struct sock *sk)
> {
> struct smc_hashinfo *h = sk->sk_prot->h.smc_hash;
> struct hlist_head *head;
>@@ -193,7 +193,7 @@ static int smc_hash_sk(struct sock *sk)
> return 0;
> }
>
>-static void smc_unhash_sk(struct sock *sk)
>+void smc_unhash_sk(struct sock *sk)
> {
> struct smc_hashinfo *h = sk->sk_prot->h.smc_hash;
>
>@@ -207,7 +207,7 @@ static void smc_unhash_sk(struct sock *sk)
> * work which we didn't do because of user hold the sock_lock in the
> * BH context
> */
>-static void smc_release_cb(struct sock *sk)
>+void smc_release_cb(struct sock *sk)
> {
> struct smc_sock *smc = smc_sk(sk);
>
>@@ -307,7 +307,7 @@ static int __smc_release(struct smc_sock *smc)
> return rc;
> }
>
>-static int smc_release(struct socket *sock)
>+int smc_release(struct socket *sock)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -401,8 +401,8 @@ static struct sock *smc_sock_alloc(struct net *net, struct socket *sock,
> return sk;
> }
>
>-static int smc_bind(struct socket *sock, struct sockaddr *uaddr,
>- int addr_len)
>+int smc_bind(struct socket *sock, struct sockaddr *uaddr,
>+ int addr_len)
> {
> struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
> struct sock *sk = sock->sk;
>@@ -1649,8 +1649,8 @@ static void smc_connect_work(struct work_struct *work)
> release_sock(&smc->sk);
> }
>
>-static int smc_connect(struct socket *sock, struct sockaddr *addr,
>- int alen, int flags)
>+int smc_connect(struct socket *sock, struct sockaddr *addr,
>+ int alen, int flags)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -2631,7 +2631,7 @@ static void smc_clcsock_data_ready(struct sock *listen_clcsock)
> read_unlock_bh(&listen_clcsock->sk_callback_lock);
> }
>
>-static int smc_listen(struct socket *sock, int backlog)
>+int smc_listen(struct socket *sock, int backlog)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -2696,8 +2696,8 @@ static int smc_listen(struct socket *sock, int backlog)
> return rc;
> }
>
>-static int smc_accept(struct socket *sock, struct socket *new_sock,
>- struct proto_accept_arg *arg)
>+int smc_accept(struct socket *sock, struct socket *new_sock,
>+ struct proto_accept_arg *arg)
> {
> struct sock *sk = sock->sk, *nsk;
> DECLARE_WAITQUEUE(wait, current);
>@@ -2766,8 +2766,8 @@ static int smc_accept(struct socket *sock, struct socket *new_sock,
> return rc;
> }
>
>-static int smc_getname(struct socket *sock, struct sockaddr *addr,
>- int peer)
>+int smc_getname(struct socket *sock, struct sockaddr *addr,
>+ int peer)
> {
> struct smc_sock *smc;
>
>@@ -2780,7 +2780,7 @@ static int smc_getname(struct socket *sock, struct sockaddr *addr,
> return smc->clcsock->ops->getname(smc->clcsock, addr, peer);
> }
>
>-static int smc_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
>+int smc_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -2818,8 +2818,8 @@ static int smc_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
> return rc;
> }
>
>-static int smc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
>- int flags)
>+int smc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
>+ int flags)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -2868,8 +2868,8 @@ static __poll_t smc_accept_poll(struct sock *parent)
> return mask;
> }
>
>-static __poll_t smc_poll(struct file *file, struct socket *sock,
>- poll_table *wait)
>+__poll_t smc_poll(struct file *file, struct socket *sock,
>+ poll_table *wait)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -2921,7 +2921,7 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
> return mask;
> }
>
>-static int smc_shutdown(struct socket *sock, int how)
>+int smc_shutdown(struct socket *sock, int how)
> {
> struct sock *sk = sock->sk;
> bool do_shutdown = true;
>@@ -3061,8 +3061,8 @@ static int __smc_setsockopt(struct socket *sock, int level, int optname,
> return rc;
> }
>
>-static int smc_setsockopt(struct socket *sock, int level, int optname,
>- sockptr_t optval, unsigned int optlen)
>+int smc_setsockopt(struct socket *sock, int level, int optname,
>+ sockptr_t optval, unsigned int optlen)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>@@ -3148,8 +3148,8 @@ static int smc_setsockopt(struct socket *sock, int level, int optname,
> return rc;
> }
>
>-static int smc_getsockopt(struct socket *sock, int level, int optname,
>- char __user *optval, int __user *optlen)
>+int smc_getsockopt(struct socket *sock, int level, int optname,
>+ char __user *optval, int __user *optlen)
> {
> struct smc_sock *smc;
> int rc;
>@@ -3174,8 +3174,8 @@ static int smc_getsockopt(struct socket *sock, int level, int optname,
> return rc;
> }
>
>-static int smc_ioctl(struct socket *sock, unsigned int cmd,
>- unsigned long arg)
>+int smc_ioctl(struct socket *sock, unsigned int cmd,
>+ unsigned long arg)
> {
> union smc_host_cursor cons, urg;
> struct smc_connection *conn;
>@@ -3261,9 +3261,9 @@ static int smc_ioctl(struct socket *sock, unsigned int cmd,
> * Note that subsequent recv() calls have to wait till all splice() processing
> * completed.
> */
>-static ssize_t smc_splice_read(struct socket *sock, loff_t *ppos,
>- struct pipe_inode_info *pipe, size_t len,
>- unsigned int flags)
>+ssize_t smc_splice_read(struct socket *sock, loff_t *ppos,
>+ struct pipe_inode_info *pipe, size_t len,
>+ unsigned int flags)
> {
> struct sock *sk = sock->sk;
> struct smc_sock *smc;
>diff --git a/net/smc/smc.h b/net/smc/smc.h
>index 3edec1e..34b781e 100644
>--- a/net/smc/smc.h
>+++ b/net/smc/smc.h
>@@ -34,6 +34,39 @@
> extern struct proto smc_proto;
> extern struct proto smc_proto6;
>
>+extern struct smc_hashinfo smc_v4_hashinfo;
>+extern struct smc_hashinfo smc_v6_hashinfo;
>+
>+int smc_hash_sk(struct sock *sk);
>+void smc_unhash_sk(struct sock *sk);
>+void smc_release_cb(struct sock *sk);
>+
>+int smc_release(struct socket *sock);
>+int smc_bind(struct socket *sock, struct sockaddr *uaddr,
>+ int addr_len);
>+int smc_connect(struct socket *sock, struct sockaddr *addr,
>+ int alen, int flags);
>+int smc_accept(struct socket *sock, struct socket *new_sock,
>+ struct proto_accept_arg *arg);
>+int smc_getname(struct socket *sock, struct sockaddr *addr,
>+ int peer);
>+__poll_t smc_poll(struct file *file, struct socket *sock,
>+ poll_table *wait);
>+int smc_ioctl(struct socket *sock, unsigned int cmd,
>+ unsigned long arg);
>+int smc_listen(struct socket *sock, int backlog);
>+int smc_shutdown(struct socket *sock, int how);
>+int smc_setsockopt(struct socket *sock, int level, int optname,
>+ sockptr_t optval, unsigned int optlen);
>+int smc_getsockopt(struct socket *sock, int level, int optname,
>+ char __user *optval, int __user *optlen);
>+int smc_sendmsg(struct socket *sock, struct msghdr *msg, size_t len);
>+int smc_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
>+ int flags);
>+ssize_t smc_splice_read(struct socket *sock, loff_t *ppos,
>+ struct pipe_inode_info *pipe, size_t len,
>+ unsigned int flags);
>+
> /* smc sock initialization */
> void smc_sk_init(struct net *net, struct sock *sk, int protocol);
> /* clcsock initialization */
>--
>1.8.3.1
>
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