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-rw-r--r--net/sunrpc/cache.c2
-rw-r--r--net/sunrpc/svc_xprt.c57
-rw-r--r--net/sunrpc/svcsock.c122
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_recvfrom.c8
4 files changed, 129 insertions, 60 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 20029a79a5d..ff0c23053d2 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -488,7 +488,7 @@ static void do_cache_clean(struct work_struct *work)
{
int delay = 5;
if (cache_clean() == -1)
- delay = 30*HZ;
+ delay = round_jiffies_relative(30*HZ);
if (list_empty(&cache_list))
delay = 0;
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index c200d92e57e..6f33d33cc06 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -11,6 +11,7 @@
#include <net/sock.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/svc_xprt.h>
+#include <linux/sunrpc/svcsock.h>
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
@@ -1097,36 +1098,58 @@ struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
}
EXPORT_SYMBOL_GPL(svc_find_xprt);
-/*
- * Format a buffer with a list of the active transports. A zero for
- * the buflen parameter disables target buffer overflow checking.
+static int svc_one_xprt_name(const struct svc_xprt *xprt,
+ char *pos, int remaining)
+{
+ int len;
+
+ len = snprintf(pos, remaining, "%s %u\n",
+ xprt->xpt_class->xcl_name,
+ svc_xprt_local_port(xprt));
+ if (len >= remaining)
+ return -ENAMETOOLONG;
+ return len;
+}
+
+/**
+ * svc_xprt_names - format a buffer with a list of transport names
+ * @serv: pointer to an RPC service
+ * @buf: pointer to a buffer to be filled in
+ * @buflen: length of buffer to be filled in
+ *
+ * Fills in @buf with a string containing a list of transport names,
+ * each name terminated with '\n'.
+ *
+ * Returns positive length of the filled-in string on success; otherwise
+ * a negative errno value is returned if an error occurs.
*/
-int svc_xprt_names(struct svc_serv *serv, char *buf, int buflen)
+int svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen)
{
struct svc_xprt *xprt;
- char xprt_str[64];
- int totlen = 0;
- int len;
+ int len, totlen;
+ char *pos;
/* Sanity check args */
if (!serv)
return 0;
spin_lock_bh(&serv->sv_lock);
+
+ pos = buf;
+ totlen = 0;
list_for_each_entry(xprt, &serv->sv_permsocks, xpt_list) {
- len = snprintf(xprt_str, sizeof(xprt_str),
- "%s %d\n", xprt->xpt_class->xcl_name,
- svc_xprt_local_port(xprt));
- /* If the string was truncated, replace with error string */
- if (len >= sizeof(xprt_str))
- strcpy(xprt_str, "name-too-long\n");
- /* Don't overflow buffer */
- len = strlen(xprt_str);
- if (buflen && (len + totlen >= buflen))
+ len = svc_one_xprt_name(xprt, pos, buflen - totlen);
+ if (len < 0) {
+ *buf = '\0';
+ totlen = len;
+ }
+ if (len <= 0)
break;
- strcpy(buf+totlen, xprt_str);
+
+ pos += len;
totlen += len;
}
+
spin_unlock_bh(&serv->sv_lock);
return totlen;
}
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index a2a03e50053..23128ee191a 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -240,42 +240,76 @@ out:
/*
* Report socket names for nfsdfs
*/
-static int one_sock_name(char *buf, struct svc_sock *svsk)
+static int svc_one_sock_name(struct svc_sock *svsk, char *buf, int remaining)
{
+ const struct sock *sk = svsk->sk_sk;
+ const char *proto_name = sk->sk_protocol == IPPROTO_UDP ?
+ "udp" : "tcp";
int len;
- switch(svsk->sk_sk->sk_family) {
- case AF_INET:
- len = sprintf(buf, "ipv4 %s %pI4 %d\n",
- svsk->sk_sk->sk_protocol == IPPROTO_UDP ?
- "udp" : "tcp",
- &inet_sk(svsk->sk_sk)->rcv_saddr,
- inet_sk(svsk->sk_sk)->num);
+ switch (sk->sk_family) {
+ case PF_INET:
+ len = snprintf(buf, remaining, "ipv4 %s %pI4 %d\n",
+ proto_name,
+ &inet_sk(sk)->rcv_saddr,
+ inet_sk(sk)->num);
+ break;
+ case PF_INET6:
+ len = snprintf(buf, remaining, "ipv6 %s %pI6 %d\n",
+ proto_name,
+ &inet6_sk(sk)->rcv_saddr,
+ inet_sk(sk)->num);
break;
default:
- len = sprintf(buf, "*unknown-%d*\n",
- svsk->sk_sk->sk_family);
+ len = snprintf(buf, remaining, "*unknown-%d*\n",
+ sk->sk_family);
+ }
+
+ if (len >= remaining) {
+ *buf = '\0';
+ return -ENAMETOOLONG;
}
return len;
}
-int
-svc_sock_names(char *buf, struct svc_serv *serv, char *toclose)
+/**
+ * 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 = one_sock_name(buf+len, svsk);
- if (toclose && strcmp(toclose, buf+len) == 0)
+ 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;
else
len += onelen;
}
spin_unlock_bh(&serv->sv_lock);
+
if (closesk)
/* Should unregister with portmap, but you cannot
* unregister just one protocol...
@@ -346,6 +380,7 @@ static void svc_sock_setbufsize(struct socket *sock, unsigned int snd,
sock->sk->sk_sndbuf = snd * 2;
sock->sk->sk_rcvbuf = rcv * 2;
sock->sk->sk_userlocks |= SOCK_SNDBUF_LOCK|SOCK_RCVBUF_LOCK;
+ sock->sk->sk_write_space(sock->sk);
release_sock(sock->sk);
#endif
}
@@ -387,6 +422,15 @@ static void svc_write_space(struct sock *sk)
}
}
+static void svc_tcp_write_space(struct sock *sk)
+{
+ struct socket *sock = sk->sk_socket;
+
+ if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk) && sock)
+ clear_bit(SOCK_NOSPACE, &sock->flags);
+ svc_write_space(sk);
+}
+
/*
* Copy the UDP datagram's destination address to the rqstp structure.
* The 'destination' address in this case is the address to which the
@@ -427,13 +471,14 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
long all[SVC_PKTINFO_SPACE / sizeof(long)];
} buffer;
struct cmsghdr *cmh = &buffer.hdr;
- int err, len;
struct msghdr msg = {
.msg_name = svc_addr(rqstp),
.msg_control = cmh,
.msg_controllen = sizeof(buffer),
.msg_flags = MSG_DONTWAIT,
};
+ size_t len;
+ int err;
if (test_and_clear_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags))
/* udp sockets need large rcvbuf as all pending
@@ -465,8 +510,8 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
return -EAGAIN;
}
len = svc_addr_len(svc_addr(rqstp));
- if (len < 0)
- return len;
+ if (len == 0)
+ return -EAFNOSUPPORT;
rqstp->rq_addrlen = len;
if (skb->tstamp.tv64 == 0) {
skb->tstamp = ktime_get_real();
@@ -980,25 +1025,16 @@ static void svc_tcp_prep_reply_hdr(struct svc_rqst *rqstp)
static int svc_tcp_has_wspace(struct svc_xprt *xprt)
{
struct svc_sock *svsk = container_of(xprt, struct svc_sock, sk_xprt);
- struct svc_serv *serv = svsk->sk_xprt.xpt_server;
+ struct svc_serv *serv = svsk->sk_xprt.xpt_server;
int required;
- int wspace;
- /*
- * Set the SOCK_NOSPACE flag before checking the available
- * sock space.
- */
+ if (test_bit(XPT_LISTENER, &xprt->xpt_flags))
+ return 1;
+ required = atomic_read(&xprt->xpt_reserved) + serv->sv_max_mesg;
+ if (sk_stream_wspace(svsk->sk_sk) >= required)
+ return 1;
set_bit(SOCK_NOSPACE, &svsk->sk_sock->flags);
- required = atomic_read(&svsk->sk_xprt.xpt_reserved) + serv->sv_max_mesg;
- wspace = sk_stream_wspace(svsk->sk_sk);
-
- if (wspace < sk_stream_min_wspace(svsk->sk_sk))
- return 0;
- if (required * 2 > wspace)
- return 0;
-
- clear_bit(SOCK_NOSPACE, &svsk->sk_sock->flags);
- return 1;
+ return 0;
}
static struct svc_xprt *svc_tcp_create(struct svc_serv *serv,
@@ -1054,7 +1090,7 @@ static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv)
dprintk("setting up TCP socket for reading\n");
sk->sk_state_change = svc_tcp_state_change;
sk->sk_data_ready = svc_tcp_data_ready;
- sk->sk_write_space = svc_write_space;
+ sk->sk_write_space = svc_tcp_write_space;
svsk->sk_reclen = 0;
svsk->sk_tcplen = 0;
@@ -1148,9 +1184,19 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
return svsk;
}
-int svc_addsock(struct svc_serv *serv,
- int fd,
- char *name_return)
+/**
+ * svc_addsock - add a listener socket to an RPC service
+ * @serv: pointer to RPC service to which to add a new listener
+ * @fd: file descriptor of the new listener
+ * @name_return: pointer to buffer to fill in with name of listener
+ * @len: size of the buffer
+ *
+ * Fills in socket name and returns positive length of name if successful.
+ * Name is terminated with '\n'. On error, returns a negative errno
+ * value.
+ */
+int svc_addsock(struct svc_serv *serv, const int fd, char *name_return,
+ const size_t len)
{
int err = 0;
struct socket *so = sockfd_lookup(fd, &err);
@@ -1190,7 +1236,7 @@ int svc_addsock(struct svc_serv *serv,
sockfd_put(so);
return err;
}
- return one_sock_name(name_return, svsk);
+ return svc_one_sock_name(svsk, name_return, len);
}
EXPORT_SYMBOL_GPL(svc_addsock);
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index 42a6f9f2028..9e884383134 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -397,14 +397,14 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
if (!ch)
return 0;
- /* Allocate temporary reply and chunk maps */
- rpl_map = svc_rdma_get_req_map();
- chl_map = svc_rdma_get_req_map();
-
svc_rdma_rcl_chunk_counts(ch, &ch_count, &byte_count);
if (ch_count > RPCSVC_MAXPAGES)
return -EINVAL;
+ /* Allocate temporary reply and chunk maps */
+ rpl_map = svc_rdma_get_req_map();
+ chl_map = svc_rdma_get_req_map();
+
if (!xprt->sc_frmr_pg_list_len)
sge_count = map_read_chunks(xprt, rqstp, hdr_ctxt, rmsgp,
rpl_map, chl_map, ch_count,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-21 12:06:22 +0000