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Date: Wed, 29 May 2024 19:57:28 +0200
From: Zhu Yanjun <yanjun.zhu@...ux.dev>
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 v4 2/3] net/smc: expose smc proto operations
在 2024/5/29 5:59, D. Wythe 写道:
> From: "D. Wythe" <alibuda@...ux.alibaba.com>
>
> Externalize smc proto operations (smc_xxx) to allow
> access from files other that af_smc.c
s/other that/other than ?
Zhu Yanjun
>
> This is in preparation for the subsequent implementation
> of the AF_INET version of SMC.
>
> Signed-off-by: D. Wythe <alibuda@...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 */
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