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qapi net: Elide redundant has_FOO in generated C

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The has_FOO for pointer-valued FOO are redundant, except for arrays.
They are also a nuisance to work with.  Recent commit "qapi: Start to
elide redundant has_FOO in generated C" provided the means to elide
them step by step.  This is the step for qapi/net.json.

Said commit explains the transformation in more detail.  The invariant
violations mentioned there do not occur here.

Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221104160712.3005652-19-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
[Fixes for MacOS squashed in]
This commit is contained in:
Markus Armbruster
2022-11-04 17:07:00 +01:00
parent 9492718b7c
commit 7480874a69
14 changed files with 77 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
net/tap.c
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@ -611,8 +611,8 @@ int net_init_bridge(const Netdev *netdev, const char *name,
assert(netdev->type == NET_CLIENT_DRIVER_BRIDGE);
bridge = &netdev->u.bridge;
helper = bridge->has_helper ? bridge->helper : NULL;
br = bridge->has_br ? bridge->br : DEFAULT_BRIDGE_INTERFACE;
helper = bridge->helper;
br = bridge->br ?: DEFAULT_BRIDGE_INTERFACE;
fd = net_bridge_run_helper(helper, br, errp);
if (fd == -1) {
@ -688,9 +688,9 @@ static void net_init_tap_one(const NetdevTapOptions *tap, NetClientState *peer,
goto failed;
}
if (tap->has_fd || tap->has_fds) {
if (tap->fd || tap->fds) {
qemu_set_info_str(&s->nc, "fd=%d", fd);
} else if (tap->has_helper) {
} else if (tap->helper) {
qemu_set_info_str(&s->nc, "helper=%s", tap->helper);
} else {
qemu_set_info_str(&s->nc, "ifname=%s,script=%s,downscript=%s", ifname,
@ -812,21 +812,21 @@ int net_init_tap(const Netdev *netdev, const char *name,
assert(netdev->type == NET_CLIENT_DRIVER_TAP);
tap = &netdev->u.tap;
queues = tap->has_queues ? tap->queues : 1;
vhostfdname = tap->has_vhostfd ? tap->vhostfd : NULL;
script = tap->has_script ? tap->script : NULL;
downscript = tap->has_downscript ? tap->downscript : NULL;
vhostfdname = tap->vhostfd;
script = tap->script;
downscript = tap->downscript;
/* QEMU hubs do not support multiqueue tap, in this case peer is set.
* For -netdev, peer is always NULL. */
if (peer && (tap->has_queues || tap->has_fds || tap->has_vhostfds)) {
if (peer && (tap->has_queues || tap->fds || tap->vhostfds)) {
error_setg(errp, "Multiqueue tap cannot be used with hubs");
return -1;
}
if (tap->has_fd) {
if (tap->has_ifname || tap->has_script || tap->has_downscript ||
tap->has_vnet_hdr || tap->has_helper || tap->has_queues ||
tap->has_fds || tap->has_vhostfds) {
if (tap->fd) {
if (tap->ifname || tap->script || tap->downscript ||
tap->has_vnet_hdr || tap->helper || tap->has_queues ||
tap->fds || tap->vhostfds) {
error_setg(errp, "ifname=, script=, downscript=, vnet_hdr=, "
"helper=, queues=, fds=, and vhostfds= "
"are invalid with fd=");
@ -859,14 +859,14 @@ int net_init_tap(const Netdev *netdev, const char *name,
close(fd);
return -1;
}
} else if (tap->has_fds) {
} else if (tap->fds) {
char **fds;
char **vhost_fds;
int nfds = 0, nvhosts = 0;
if (tap->has_ifname || tap->has_script || tap->has_downscript ||
tap->has_vnet_hdr || tap->has_helper || tap->has_queues ||
tap->has_vhostfd) {
if (tap->ifname || tap->script || tap->downscript ||
tap->has_vnet_hdr || tap->helper || tap->has_queues ||
tap->vhostfd) {
error_setg(errp, "ifname=, script=, downscript=, vnet_hdr=, "
"helper=, queues=, and vhostfd= "
"are invalid with fds=");
@ -877,7 +877,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
vhost_fds = g_new0(char *, MAX_TAP_QUEUES);
nfds = get_fds(tap->fds, fds, MAX_TAP_QUEUES);
if (tap->has_vhostfds) {
if (tap->vhostfds) {
nvhosts = get_fds(tap->vhostfds, vhost_fds, MAX_TAP_QUEUES);
if (nfds != nvhosts) {
error_setg(errp, "The number of fds passed does not match "
@ -916,7 +916,7 @@ int net_init_tap(const Netdev *netdev, const char *name,
net_init_tap_one(tap, peer, "tap", name, ifname,
script, downscript,
tap->has_vhostfds ? vhost_fds[i] : NULL,
tap->vhostfds ? vhost_fds[i] : NULL,
vnet_hdr, fd, &err);
if (err) {
error_propagate(errp, err);
@ -935,17 +935,16 @@ free_fail:
g_free(fds);
g_free(vhost_fds);
return ret;
} else if (tap->has_helper) {
if (tap->has_ifname || tap->has_script || tap->has_downscript ||
tap->has_vnet_hdr || tap->has_queues || tap->has_vhostfds) {
} else if (tap->helper) {
if (tap->ifname || tap->script || tap->downscript ||
tap->has_vnet_hdr || tap->has_queues || tap->vhostfds) {
error_setg(errp, "ifname=, script=, downscript=, vnet_hdr=, "
"queues=, and vhostfds= are invalid with helper=");
return -1;
}
fd = net_bridge_run_helper(tap->helper,
tap->has_br ?
tap->br : DEFAULT_BRIDGE_INTERFACE,
tap->br ?: DEFAULT_BRIDGE_INTERFACE,
errp);
if (fd == -1) {
return -1;
@ -972,7 +971,7 @@ free_fail:
} else {
g_autofree char *default_script = NULL;
g_autofree char *default_downscript = NULL;
if (tap->has_vhostfds) {
if (tap->vhostfds) {
error_setg(errp, "vhostfds= is invalid if fds= wasn't specified");
return -1;
}
@ -985,7 +984,7 @@ free_fail:
get_relocated_path(DEFAULT_NETWORK_DOWN_SCRIPT);
}
if (tap->has_ifname) {
if (tap->ifname) {
pstrcpy(ifname, sizeof ifname, tap->ifname);
} else {
ifname[0] = '\0';
@ -998,7 +997,7 @@ free_fail:
return -1;
}
if (queues > 1 && i == 0 && !tap->has_ifname) {
if (queues > 1 && i == 0 && !tap->ifname) {
if (tap_fd_get_ifname(fd, ifname)) {
error_setg(errp, "Fail to get ifname");
close(fd);