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tap: Convert net_init_tap_one() to Error 

[Dropped %s from "tap: open vhost char device failed: %s" since
error_setg_errno() already prints a human-readable error string and
there is no format string argument.
--Stefan]

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-9-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2015-05-15 13:58:56 +02:00 committed by Stefan Hajnoczi
parent 80b832c300
commit 445f116cab
1 changed files with 38 additions and 32 deletions
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70
net/tap.c
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@ -600,11 +600,11 @@ static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr,
#define MAX_TAP_QUEUES 1024
static int net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
const char *model, const char *name,
const char *ifname, const char *script,
const char *downscript, const char *vhostfdname,
int vnet_hdr, int fd)
static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
const char *model, const char *name,
const char *ifname, const char *script,
const char *downscript, const char *vhostfdname,
int vnet_hdr, int fd, Error **errp)
{
Error *err = NULL;
TAPState *s = net_tap_fd_init(peer, model, name, fd, vnet_hdr);
@ -612,8 +612,8 @@ static int net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
tap_set_sndbuf(s->fd, tap, &err);
if (err) {
error_report_err(err);
return -1;
error_propagate(errp, err);
return;
}
if (tap->has_fd || tap->has_fds) {
@ -644,30 +644,28 @@ static int net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
if (tap->has_vhostfd || tap->has_vhostfds) {
vhostfd = monitor_fd_param(cur_mon, vhostfdname, &err);
if (vhostfd == -1) {
error_report_err(err);
return -1;
error_propagate(errp, err);
return;
}
} else {
vhostfd = open("/dev/vhost-net", O_RDWR);
if (vhostfd < 0) {
error_report("tap: open vhost char device failed: %s",
strerror(errno));
return -1;
error_setg_errno(errp, errno,
"tap: open vhost char device failed");
return;
}
}
options.opaque = (void *)(uintptr_t)vhostfd;
s->vhost_net = vhost_net_init(&options);
if (!s->vhost_net) {
error_report("vhost-net requested but could not be initialized");
return -1;
error_setg(errp,
"vhost-net requested but could not be initialized");
return;
}
} else if (tap->has_vhostfd || tap->has_vhostfds) {
error_report("vhostfd= is not valid without vhost");
return -1;
error_setg(errp, "vhostfd= is not valid without vhost");
}
return 0;
}
static int get_fds(char *str, char *fds[], int max)
@ -741,9 +739,11 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
vnet_hdr = tap_probe_vnet_hdr(fd);
if (net_init_tap_one(tap, peer, "tap", name, NULL,
script, downscript,
vhostfdname, vnet_hdr, fd)) {
net_init_tap_one(tap, peer, "tap", name, NULL,
script, downscript,
vhostfdname, vnet_hdr, fd, &err);
if (err) {
error_report_err(err);
return -1;
}
} else if (tap->has_fds) {
@ -786,10 +786,12 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
return -1;
}
if (net_init_tap_one(tap, peer, "tap", name, ifname,
script, downscript,
tap->has_vhostfds ? vhost_fds[i] : NULL,
vnet_hdr, fd)) {
net_init_tap_one(tap, peer, "tap", name, ifname,
script, downscript,
tap->has_vhostfds ? vhost_fds[i] : NULL,
vnet_hdr, fd, &err);
if (err) {
error_report_err(err);
return -1;
}
}
@ -810,9 +812,11 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
fcntl(fd, F_SETFL, O_NONBLOCK);
vnet_hdr = tap_probe_vnet_hdr(fd);
if (net_init_tap_one(tap, peer, "bridge", name, ifname,
script, downscript, vhostfdname,
vnet_hdr, fd)) {
net_init_tap_one(tap, peer, "bridge", name, ifname,
script, downscript, vhostfdname,
vnet_hdr, fd, &err);
if (err) {
error_report_err(err);
close(fd);
return -1;
}
@ -846,10 +850,12 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
}
}
if (net_init_tap_one(tap, peer, "tap", name, ifname,
i >= 1 ? "no" : script,
i >= 1 ? "no" : downscript,
vhostfdname, vnet_hdr, fd)) {
net_init_tap_one(tap, peer, "tap", name, ifname,
i >= 1 ? "no" : script,
i >= 1 ? "no" : downscript,
vhostfdname, vnet_hdr, fd, &err);
if (err) {
error_report_err(err);
close(fd);
return -1;
}