qemu/hw/net/rocker/rocker_world.c
Mao Zhongyi 107e4b352c net/rocker: Remove the dead error handling
Memory allocation functions like world_alloc, desc_ring_alloc etc,
they are all wrappers around g_malloc, g_new etc. But g_malloc and
similar functions doesn't return null. Because they ignore the fact
that g_malloc() of 0 bytes returns null. So error checks for these
allocation failure are superfluous. Now, remove them entirely.

Cc: jasowang@redhat.com
Cc: jiri@resnulli.us
Cc: armbru@redhat.com
Cc: f4bug@amsat.org
Signed-off-by: Mao Zhongyi <maozy.fnst@cn.fujitsu.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2017-09-08 08:17:37 +08:00

101 lines
2.1 KiB
C

/*
* QEMU rocker switch emulation - switch worlds
*
* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "qemu/osdep.h"
#include "qemu/iov.h"
#include "rocker.h"
#include "rocker_world.h"
struct world {
Rocker *r;
enum rocker_world_type type;
WorldOps *ops;
};
ssize_t world_ingress(World *world, uint32_t pport,
const struct iovec *iov, int iovcnt)
{
if (world->ops->ig) {
return world->ops->ig(world, pport, iov, iovcnt);
}
return -1;
}
int world_do_cmd(World *world, DescInfo *info,
char *buf, uint16_t cmd, RockerTlv *cmd_info_tlv)
{
if (world->ops->cmd) {
return world->ops->cmd(world, info, buf, cmd, cmd_info_tlv);
}
return -ROCKER_ENOTSUP;
}
World *world_alloc(Rocker *r, size_t sizeof_private,
enum rocker_world_type type, WorldOps *ops)
{
World *w = g_malloc0(sizeof(World) + sizeof_private);
w->r = r;
w->type = type;
w->ops = ops;
if (w->ops->init) {
w->ops->init(w);
}
return w;
}
void world_free(World *world)
{
if (world->ops->uninit) {
world->ops->uninit(world);
}
g_free(world);
}
void world_reset(World *world)
{
if (world->ops->uninit) {
world->ops->uninit(world);
}
if (world->ops->init) {
world->ops->init(world);
}
}
void *world_private(World *world)
{
return world + 1;
}
Rocker *world_rocker(World *world)
{
return world->r;
}
enum rocker_world_type world_type(World *world)
{
return world->type;
}
const char *world_name(World *world)
{
return world->ops->name;
}