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Diffstat (limited to 'net/sunrpc/svcsock.c')
-rw-r--r--net/sunrpc/svcsock.c157
1 files changed, 52 insertions, 105 deletions
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 998aa8c1807..03827cef1fa 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -59,7 +59,7 @@
static struct svc_sock *svc_setup_socket(struct svc_serv *, struct socket *,
- int *errp, int flags);
+ int flags);
static void svc_udp_data_ready(struct sock *, int);
static int svc_udp_recvfrom(struct svc_rqst *);
static int svc_udp_sendto(struct svc_rqst *);
@@ -305,57 +305,6 @@ static int svc_one_sock_name(struct svc_sock *svsk, char *buf, int remaining)
return len;
}
-/**
- * svc_sock_names - construct a list of listener names in a string
- * @serv: pointer to RPC service
- * @buf: pointer to a buffer to fill in with socket names
- * @buflen: size of the buffer to be filled
- * @toclose: pointer to '\0'-terminated C string containing the name
- * of a listener to be closed
- *
- * Fills in @buf with a '\n'-separated list of names of listener
- * sockets. If @toclose is not NULL, the socket named by @toclose
- * is closed, and is not included in the output list.
- *
- * Returns positive length of the socket name string, or a negative
- * errno value on error.
- */
-int svc_sock_names(struct svc_serv *serv, char *buf, const size_t buflen,
- const char *toclose)
-{
- struct svc_sock *svsk, *closesk = NULL;
- int len = 0;
-
- if (!serv)
- return 0;
-
- spin_lock_bh(&serv->sv_lock);
- list_for_each_entry(svsk, &serv->sv_permsocks, sk_xprt.xpt_list) {
- int onelen = svc_one_sock_name(svsk, buf + len, buflen - len);
- if (onelen < 0) {
- len = onelen;
- break;
- }
- if (toclose && strcmp(toclose, buf + len) == 0) {
- closesk = svsk;
- svc_xprt_get(&closesk->sk_xprt);
- } else
- len += onelen;
- }
- spin_unlock_bh(&serv->sv_lock);
-
- if (closesk) {
- /* Should unregister with portmap, but you cannot
- * unregister just one protocol...
- */
- svc_close_xprt(&closesk->sk_xprt);
- svc_xprt_put(&closesk->sk_xprt);
- } else if (toclose)
- return -ENOENT;
- return len;
-}
-EXPORT_SYMBOL_GPL(svc_sock_names);
-
/*
* Check input queue length
*/
@@ -598,11 +547,9 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
dprintk("svc: recvfrom returned error %d\n", -err);
set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags);
}
- return -EAGAIN;
+ return 0;
}
len = svc_addr_len(svc_addr(rqstp));
- if (len == 0)
- return -EAFNOSUPPORT;
rqstp->rq_addrlen = len;
if (skb->tstamp.tv64 == 0) {
skb->tstamp = ktime_get_real();
@@ -620,10 +567,7 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
if (!svc_udp_get_dest_address(rqstp, cmh)) {
net_warn_ratelimited("svc: received unknown control message %d/%d; dropping RPC reply datagram\n",
cmh->cmsg_level, cmh->cmsg_type);
-out_free:
- trace_kfree_skb(skb, svc_udp_recvfrom);
- skb_free_datagram_locked(svsk->sk_sk, skb);
- return 0;
+ goto out_free;
}
rqstp->rq_daddrlen = svc_addr_len(svc_daddr(rqstp));
@@ -662,6 +606,10 @@ out_free:
serv->sv_stats->netudpcnt++;
return len;
+out_free:
+ trace_kfree_skb(skb, svc_udp_recvfrom);
+ skb_free_datagram_locked(svsk->sk_sk, skb);
+ return 0;
}
static int
@@ -900,8 +848,9 @@ static struct svc_xprt *svc_tcp_accept(struct svc_xprt *xprt)
*/
newsock->sk->sk_sndtimeo = HZ*30;
- if (!(newsvsk = svc_setup_socket(serv, newsock, &err,
- (SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY))))
+ newsvsk = svc_setup_socket(serv, newsock,
+ (SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY));
+ if (IS_ERR(newsvsk))
goto failed;
svc_xprt_set_remote(&newsvsk->sk_xprt, sin, slen);
err = kernel_getsockname(newsock, sin, &slen);
@@ -1174,13 +1123,13 @@ error:
if (len != -EAGAIN)
goto err_other;
dprintk("RPC: TCP recvfrom got EAGAIN\n");
- return -EAGAIN;
+ return 0;
err_other:
printk(KERN_NOTICE "%s: recvfrom returned errno %d\n",
svsk->sk_xprt.xpt_server->sv_name, -len);
set_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags);
err_noclose:
- return -EAGAIN; /* record not complete */
+ return 0; /* record not complete */
}
/*
@@ -1383,29 +1332,29 @@ EXPORT_SYMBOL_GPL(svc_sock_update_bufs);
*/
static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
struct socket *sock,
- int *errp, int flags)
+ int flags)
{
struct svc_sock *svsk;
struct sock *inet;
int pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
+ int err = 0;
dprintk("svc: svc_setup_socket %p\n", sock);
- if (!(svsk = kzalloc(sizeof(*svsk), GFP_KERNEL))) {
- *errp = -ENOMEM;
- return NULL;
- }
+ svsk = kzalloc(sizeof(*svsk), GFP_KERNEL);
+ if (!svsk)
+ return ERR_PTR(-ENOMEM);
inet = sock->sk;
/* Register socket with portmapper */
- if (*errp >= 0 && pmap_register)
- *errp = svc_register(serv, sock_net(sock->sk), inet->sk_family,
+ if (pmap_register)
+ err = svc_register(serv, sock_net(sock->sk), inet->sk_family,
inet->sk_protocol,
ntohs(inet_sk(inet)->inet_sport));
- if (*errp < 0) {
+ if (err < 0) {
kfree(svsk);
- return NULL;
+ return ERR_PTR(err);
}
inet->sk_user_data = svsk;
@@ -1450,42 +1399,38 @@ int svc_addsock(struct svc_serv *serv, const int fd, char *name_return,
int err = 0;
struct socket *so = sockfd_lookup(fd, &err);
struct svc_sock *svsk = NULL;
+ struct sockaddr_storage addr;
+ struct sockaddr *sin = (struct sockaddr *)&addr;
+ int salen;
if (!so)
return err;
+ err = -EAFNOSUPPORT;
if ((so->sk->sk_family != PF_INET) && (so->sk->sk_family != PF_INET6))
- err = -EAFNOSUPPORT;
- else if (so->sk->sk_protocol != IPPROTO_TCP &&
+ goto out;
+ err = -EPROTONOSUPPORT;
+ if (so->sk->sk_protocol != IPPROTO_TCP &&
so->sk->sk_protocol != IPPROTO_UDP)
- err = -EPROTONOSUPPORT;
- else if (so->state > SS_UNCONNECTED)
- err = -EISCONN;
- else {
- if (!try_module_get(THIS_MODULE))
- err = -ENOENT;
- else
- svsk = svc_setup_socket(serv, so, &err,
- SVC_SOCK_DEFAULTS);
- if (svsk) {
- struct sockaddr_storage addr;
- struct sockaddr *sin = (struct sockaddr *)&addr;
- int salen;
- if (kernel_getsockname(svsk->sk_sock, sin, &salen) == 0)
- svc_xprt_set_local(&svsk->sk_xprt, sin, salen);
- clear_bit(XPT_TEMP, &svsk->sk_xprt.xpt_flags);
- spin_lock_bh(&serv->sv_lock);
- list_add(&svsk->sk_xprt.xpt_list, &serv->sv_permsocks);
- spin_unlock_bh(&serv->sv_lock);
- svc_xprt_received(&svsk->sk_xprt);
- err = 0;
- } else
- module_put(THIS_MODULE);
- }
- if (err) {
- sockfd_put(so);
- return err;
+ goto out;
+ err = -EISCONN;
+ if (so->state > SS_UNCONNECTED)
+ goto out;
+ err = -ENOENT;
+ if (!try_module_get(THIS_MODULE))
+ goto out;
+ svsk = svc_setup_socket(serv, so, SVC_SOCK_DEFAULTS);
+ if (IS_ERR(svsk)) {
+ module_put(THIS_MODULE);
+ err = PTR_ERR(svsk);
+ goto out;
}
+ if (kernel_getsockname(svsk->sk_sock, sin, &salen) == 0)
+ svc_xprt_set_local(&svsk->sk_xprt, sin, salen);
+ svc_add_new_perm_xprt(serv, &svsk->sk_xprt);
return svc_one_sock_name(svsk, name_return, len);
+out:
+ sockfd_put(so);
+ return err;
}
EXPORT_SYMBOL_GPL(svc_addsock);
@@ -1563,11 +1508,13 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
goto bummer;
}
- if ((svsk = svc_setup_socket(serv, sock, &error, flags)) != NULL) {
- svc_xprt_set_local(&svsk->sk_xprt, newsin, newlen);
- return (struct svc_xprt *)svsk;
+ svsk = svc_setup_socket(serv, sock, flags);
+ if (IS_ERR(svsk)) {
+ error = PTR_ERR(svsk);
+ goto bummer;
}
-
+ svc_xprt_set_local(&svsk->sk_xprt, newsin, newlen);
+ return (struct svc_xprt *)svsk;
bummer:
dprintk("svc: svc_create_socket error = %d\n", -error);
sock_release(sock);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 20:36:38 +0000