/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <config.h>
#include "stream-fd.h"
-#include <assert.h>
#include <errno.h>
#include <poll.h>
#include <stdlib.h>
#include "leak-checker.h"
#include "poll-loop.h"
#include "socket-util.h"
+#include "stress.h"
#include "util.h"
#include "stream-provider.h"
#include "stream.h"
-
#include "vlog.h"
-#define THIS_MODULE VLM_stream_fd
+
+VLOG_DEFINE_THIS_MODULE(stream_fd);
/* Active file descriptor stream. */
{
struct stream stream;
int fd;
- char *unlink_path;
};
-static struct stream_class stream_fd_class;
+static const struct stream_class stream_fd_class;
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(10, 25);
* and stores a pointer to the stream in '*streamp'. Initial connection status
* 'connect_status' is interpreted as described for stream_init().
*
- * When '*streamp' is closed, then 'unlink_path' (if nonnull) will be passed to
- * fatal_signal_unlink_file_now() and then freed with free().
- *
* Returns 0 if successful, otherwise a positive errno value. (The current
* implementation never fails.) */
int
new_fd_stream(const char *name, int fd, int connect_status,
- char *unlink_path, struct stream **streamp)
+ struct stream **streamp)
{
struct stream_fd *s;
s = xmalloc(sizeof *s);
stream_init(&s->stream, &stream_fd_class, connect_status, name);
s->fd = fd;
- s->unlink_path = unlink_path;
*streamp = &s->stream;
return 0;
}
{
struct stream_fd *s = stream_fd_cast(stream);
close(s->fd);
- maybe_unlink_and_free(s->unlink_path);
free(s);
}
return check_connection_completion(s->fd);
}
+STRESS_OPTION(
+ stream_flaky_recv, "simulate failure of fd stream recvs",
+ 100, 0, -1, 0);
+
static ssize_t
fd_recv(struct stream *stream, void *buffer, size_t n)
{
struct stream_fd *s = stream_fd_cast(stream);
- ssize_t retval = read(s->fd, buffer, n);
+ ssize_t retval;
+
+ if (STRESS(stream_flaky_recv)) {
+ return -EIO;
+ }
+
+ retval = read(s->fd, buffer, n);
return retval >= 0 ? retval : -errno;
}
+STRESS_OPTION(
+ stream_flaky_send, "simulate failure of fd stream sends",
+ 100, 0, -1, 0);
+
static ssize_t
fd_send(struct stream *stream, const void *buffer, size_t n)
{
struct stream_fd *s = stream_fd_cast(stream);
- ssize_t retval = write(s->fd, buffer, n);
+ ssize_t retval;
+
+ if (STRESS(stream_flaky_send)) {
+ return -EIO;
+ }
+
+ retval = write(s->fd, buffer, n);
return (retval > 0 ? retval
: retval == 0 ? -EAGAIN
: -errno);
}
}
-static struct stream_class stream_fd_class = {
+static const struct stream_class stream_fd_class = {
"fd", /* name */
+ false, /* needs_probes */
NULL, /* open */
fd_close, /* close */
fd_connect, /* connect */
int fd;
int (*accept_cb)(int fd, const struct sockaddr *, size_t sa_len,
struct stream **);
+ int (*set_dscp_cb)(int fd, uint8_t dscp);
char *unlink_path;
};
new_fd_pstream(const char *name, int fd,
int (*accept_cb)(int fd, const struct sockaddr *sa,
size_t sa_len, struct stream **streamp),
+ int (*set_dscp_cb)(int fd, uint8_t dscp),
char *unlink_path, struct pstream **pstreamp)
{
struct fd_pstream *ps = xmalloc(sizeof *ps);
pstream_init(&ps->pstream, &fd_pstream_class, name);
ps->fd = fd;
ps->accept_cb = accept_cb;
+ ps->set_dscp_cb = set_dscp_cb;
ps->unlink_path = unlink_path;
*pstreamp = &ps->pstream;
return 0;
new_fd = accept(ps->fd, (struct sockaddr *) &ss, &ss_len);
if (new_fd < 0) {
- int retval = errno;
+ retval = errno;
if (retval != EAGAIN) {
VLOG_DBG_RL(&rl, "accept: %s", strerror(retval));
}
poll_fd_wait(ps->fd, POLLIN);
}
+static int
+pfd_set_dscp(struct pstream *pstream, uint8_t dscp)
+{
+ struct fd_pstream *ps = fd_pstream_cast(pstream);
+ if (ps->set_dscp_cb) {
+ return ps->set_dscp_cb(ps->fd, dscp);
+ }
+ return 0;
+}
+
static struct pstream_class fd_pstream_class = {
"pstream",
+ false,
NULL,
pfd_close,
pfd_accept,
- pfd_wait
+ pfd_wait,
+ pfd_set_dscp,
};
\f
/* Helper functions. */