unimore/kernel-hacking-2024-linux-steffo
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net/smc: expose smc proto operations

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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@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Tested-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
D. Wythe 2024-06-14 02:00:29 +08:00 committed by David S. Miller
parent d0e35656d8
commit 13543d02c9
2 changed files with 63 additions and 30 deletions
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60
net/smc/af_smc.c
View file

@ -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;
@ -1631,8 +1631,8 @@ 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;
@ -2613,7 +2613,7 @@ 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;
@ -2678,8 +2678,8 @@ 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);
@ -2748,8 +2748,8 @@ 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;
@ -2762,7 +2762,7 @@ 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;
@ -2800,8 +2800,8 @@ 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;
@ -2850,8 +2850,8 @@ 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;
@ -2903,7 +2903,7 @@ 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;
@ -3043,8 +3043,8 @@ 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;
@ -3130,8 +3130,8 @@ 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;
@ -3156,8 +3156,8 @@ 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;
@ -3243,9 +3243,9 @@ 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;

33
net/smc/smc.h
View file

@ -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 */