linux/arch/um/drivers/slirp_kern.c
Nick Desaulniers ab7ca2eb63 um: fix 3 instances of -Wmissing-prototypes
Fixes the following build errors observed from W=1 builds:
  arch/um/drivers/xterm_kern.c:35:5: warning: no previous prototype for
  function 'xterm_fd' [-Wmissing-prototypes]
  35 | int xterm_fd(int socket, int *pid_out)
     |     ^
  arch/um/drivers/xterm_kern.c:35:1: note: declare 'static' if the
  function is not intended to be used outside of this translation unit
  35 | int xterm_fd(int socket, int *pid_out)
     | ^
     | static
  arch/um/drivers/chan_kern.c:183:6: warning: no previous prototype for
  function 'free_irqs' [-Wmissing-prototypes]
  183 | void free_irqs(void)
      |      ^
  arch/um/drivers/chan_kern.c:183:1: note: declare 'static' if the
  function is not intended to be used outside of this translation unit
  183 | void free_irqs(void)
      | ^
      | static
  arch/um/drivers/slirp_kern.c:18:6: warning: no previous prototype for
  function 'slirp_init' [-Wmissing-prototypes]
  18 | void slirp_init(struct net_device *dev, void *data)
     |      ^
  arch/um/drivers/slirp_kern.c:18:1: note: declare 'static' if the
  function is not intended to be used outside of this translation unit
  18 | void slirp_init(struct net_device *dev, void *data)
     | ^
     | static

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308081050.sZEw4cQ5-lkp@intel.com/
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2023-08-26 22:45:05 +02:00

121 lines
2.6 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
*/
#include <linux/if_arp.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/string.h>
#include <net_kern.h>
#include <net_user.h>
#include "slirp.h"
struct slirp_init {
struct arg_list_dummy_wrapper argw; /* XXX should be simpler... */
};
static void slirp_init(struct net_device *dev, void *data)
{
struct uml_net_private *private;
struct slirp_data *spri;
struct slirp_init *init = data;
int i;
private = netdev_priv(dev);
spri = (struct slirp_data *) private->user;
spri->argw = init->argw;
spri->pid = -1;
spri->slave = -1;
spri->dev = dev;
slip_proto_init(&spri->slip);
dev->hard_header_len = 0;
dev->header_ops = NULL;
dev->addr_len = 0;
dev->type = ARPHRD_SLIP;
dev->tx_queue_len = 256;
dev->flags = IFF_NOARP;
printk("SLIRP backend - command line:");
for (i = 0; spri->argw.argv[i] != NULL; i++)
printk(" '%s'",spri->argw.argv[i]);
printk("\n");
}
static unsigned short slirp_protocol(struct sk_buff *skbuff)
{
return htons(ETH_P_IP);
}
static int slirp_read(int fd, struct sk_buff *skb, struct uml_net_private *lp)
{
return slirp_user_read(fd, skb_mac_header(skb), skb->dev->mtu,
(struct slirp_data *) &lp->user);
}
static int slirp_write(int fd, struct sk_buff *skb, struct uml_net_private *lp)
{
return slirp_user_write(fd, skb->data, skb->len,
(struct slirp_data *) &lp->user);
}
const struct net_kern_info slirp_kern_info = {
.init = slirp_init,
.protocol = slirp_protocol,
.read = slirp_read,
.write = slirp_write,
};
static int slirp_setup(char *str, char **mac_out, void *data)
{
struct slirp_init *init = data;
int i=0;
*init = ((struct slirp_init) { .argw = { { "slirp", NULL } } });
str = split_if_spec(str, mac_out, NULL);
if (str == NULL) /* no command line given after MAC addr */
return 1;
do {
if (i >= SLIRP_MAX_ARGS - 1) {
printk(KERN_WARNING "slirp_setup: truncating slirp "
"arguments\n");
break;
}
init->argw.argv[i++] = str;
while(*str && *str!=',') {
if (*str == '_')
*str=' ';
str++;
}
if (*str != ',')
break;
*str++ = '\0';
} while (1);
init->argw.argv[i] = NULL;
return 1;
}
static struct transport slirp_transport = {
.list = LIST_HEAD_INIT(slirp_transport.list),
.name = "slirp",
.setup = slirp_setup,
.user = &slirp_user_info,
.kern = &slirp_kern_info,
.private_size = sizeof(struct slirp_data),
.setup_size = sizeof(struct slirp_init),
};
static int register_slirp(void)
{
register_transport(&slirp_transport);
return 0;
}
late_initcall(register_slirp);