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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /net/decnet/sysctl_net_decnet.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'net/decnet/sysctl_net_decnet.c')
-rw-r--r-- | net/decnet/sysctl_net_decnet.c | 480 |
1 files changed, 480 insertions, 0 deletions
diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c new file mode 100644 index 0000000..02bca49 --- /dev/null +++ b/net/decnet/sysctl_net_decnet.c @@ -0,0 +1,480 @@ +/* + * DECnet An implementation of the DECnet protocol suite for the LINUX + * operating system. DECnet is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * DECnet sysctl support functions + * + * Author: Steve Whitehouse <SteveW@ACM.org> + * + * + * Changes: + * Steve Whitehouse - C99 changes and default device handling + * + */ +#include <linux/config.h> +#include <linux/mm.h> +#include <linux/sysctl.h> +#include <linux/fs.h> +#include <linux/netdevice.h> +#include <linux/string.h> +#include <net/neighbour.h> +#include <net/dst.h> +#include <net/flow.h> + +#include <asm/uaccess.h> + +#include <net/dn.h> +#include <net/dn_dev.h> +#include <net/dn_route.h> + + +int decnet_debug_level; +int decnet_time_wait = 30; +int decnet_dn_count = 1; +int decnet_di_count = 3; +int decnet_dr_count = 3; +int decnet_log_martians = 1; +int decnet_no_fc_max_cwnd = NSP_MIN_WINDOW; + +#ifdef CONFIG_SYSCTL +extern int decnet_dst_gc_interval; +static int min_decnet_time_wait[] = { 5 }; +static int max_decnet_time_wait[] = { 600 }; +static int min_state_count[] = { 1 }; +static int max_state_count[] = { NSP_MAXRXTSHIFT }; +static int min_decnet_dst_gc_interval[] = { 1 }; +static int max_decnet_dst_gc_interval[] = { 60 }; +static int min_decnet_no_fc_max_cwnd[] = { NSP_MIN_WINDOW }; +static int max_decnet_no_fc_max_cwnd[] = { NSP_MAX_WINDOW }; +static char node_name[7] = "???"; + +static struct ctl_table_header *dn_table_header = NULL; + +/* + * ctype.h :-) + */ +#define ISNUM(x) (((x) >= '0') && ((x) <= '9')) +#define ISLOWER(x) (((x) >= 'a') && ((x) <= 'z')) +#define ISUPPER(x) (((x) >= 'A') && ((x) <= 'Z')) +#define ISALPHA(x) (ISLOWER(x) || ISUPPER(x)) +#define INVALID_END_CHAR(x) (ISNUM(x) || ISALPHA(x)) + +static void strip_it(char *str) +{ + for(;;) { + switch(*str) { + case ' ': + case '\n': + case '\r': + case ':': + *str = 0; + case 0: + return; + } + str++; + } +} + +/* + * Simple routine to parse an ascii DECnet address + * into a network order address. + */ +static int parse_addr(dn_address *addr, char *str) +{ + dn_address area, node; + + while(*str && !ISNUM(*str)) str++; + + if (*str == 0) + return -1; + + area = (*str++ - '0'); + if (ISNUM(*str)) { + area *= 10; + area += (*str++ - '0'); + } + + if (*str++ != '.') + return -1; + + if (!ISNUM(*str)) + return -1; + + node = *str++ - '0'; + if (ISNUM(*str)) { + node *= 10; + node += (*str++ - '0'); + } + if (ISNUM(*str)) { + node *= 10; + node += (*str++ - '0'); + } + if (ISNUM(*str)) { + node *= 10; + node += (*str++ - '0'); + } + + if ((node > 1023) || (area > 63)) + return -1; + + if (INVALID_END_CHAR(*str)) + return -1; + + *addr = dn_htons((area << 10) | node); + + return 0; +} + + +static int dn_node_address_strategy(ctl_table *table, int __user *name, int nlen, + void __user *oldval, size_t __user *oldlenp, + void __user *newval, size_t newlen, + void **context) +{ + size_t len; + dn_address addr; + + if (oldval && oldlenp) { + if (get_user(len, oldlenp)) + return -EFAULT; + if (len) { + if (len != sizeof(unsigned short)) + return -EINVAL; + if (put_user(decnet_address, (unsigned short __user *)oldval)) + return -EFAULT; + } + } + if (newval && newlen) { + if (newlen != sizeof(unsigned short)) + return -EINVAL; + if (get_user(addr, (unsigned short __user *)newval)) + return -EFAULT; + + dn_dev_devices_off(); + + decnet_address = addr; + + dn_dev_devices_on(); + } + return 0; +} + +static int dn_node_address_handler(ctl_table *table, int write, + struct file *filp, + void __user *buffer, + size_t *lenp, loff_t *ppos) +{ + char addr[DN_ASCBUF_LEN]; + size_t len; + dn_address dnaddr; + + if (!*lenp || (*ppos && !write)) { + *lenp = 0; + return 0; + } + + if (write) { + int len = (*lenp < DN_ASCBUF_LEN) ? *lenp : (DN_ASCBUF_LEN-1); + + if (copy_from_user(addr, buffer, len)) + return -EFAULT; + + addr[len] = 0; + strip_it(addr); + + if (parse_addr(&dnaddr, addr)) + return -EINVAL; + + dn_dev_devices_off(); + + decnet_address = dnaddr; + + dn_dev_devices_on(); + + *ppos += len; + + return 0; + } + + dn_addr2asc(dn_ntohs(decnet_address), addr); + len = strlen(addr); + addr[len++] = '\n'; + + if (len > *lenp) len = *lenp; + + if (copy_to_user(buffer, addr, len)) + return -EFAULT; + + *lenp = len; + *ppos += len; + + return 0; +} + + +static int dn_def_dev_strategy(ctl_table *table, int __user *name, int nlen, + void __user *oldval, size_t __user *oldlenp, + void __user *newval, size_t newlen, + void **context) +{ + size_t len; + struct net_device *dev; + char devname[17]; + size_t namel; + int rv = 0; + + devname[0] = 0; + + if (oldval && oldlenp) { + if (get_user(len, oldlenp)) + return -EFAULT; + if (len) { + dev = dn_dev_get_default(); + if (dev) { + strcpy(devname, dev->name); + dev_put(dev); + } + + namel = strlen(devname) + 1; + if (len > namel) len = namel; + + if (copy_to_user(oldval, devname, len)) + return -EFAULT; + + if (put_user(len, oldlenp)) + return -EFAULT; + } + } + + if (newval && newlen) { + if (newlen > 16) + return -E2BIG; + + if (copy_from_user(devname, newval, newlen)) + return -EFAULT; + + devname[newlen] = 0; + + dev = dev_get_by_name(devname); + if (dev == NULL) + return -ENODEV; + + rv = -ENODEV; + if (dev->dn_ptr != NULL) { + rv = dn_dev_set_default(dev, 1); + if (rv) + dev_put(dev); + } + } + + return rv; +} + + +static int dn_def_dev_handler(ctl_table *table, int write, + struct file * filp, + void __user *buffer, + size_t *lenp, loff_t *ppos) +{ + size_t len; + struct net_device *dev; + char devname[17]; + + if (!*lenp || (*ppos && !write)) { + *lenp = 0; + return 0; + } + + if (write) { + if (*lenp > 16) + return -E2BIG; + + if (copy_from_user(devname, buffer, *lenp)) + return -EFAULT; + + devname[*lenp] = 0; + strip_it(devname); + + dev = dev_get_by_name(devname); + if (dev == NULL) + return -ENODEV; + + if (dev->dn_ptr == NULL) { + dev_put(dev); + return -ENODEV; + } + + if (dn_dev_set_default(dev, 1)) { + dev_put(dev); + return -ENODEV; + } + *ppos += *lenp; + + return 0; + } + + dev = dn_dev_get_default(); + if (dev == NULL) { + *lenp = 0; + return 0; + } + + strcpy(devname, dev->name); + dev_put(dev); + len = strlen(devname); + devname[len++] = '\n'; + + if (len > *lenp) len = *lenp; + + if (copy_to_user(buffer, devname, len)) + return -EFAULT; + + *lenp = len; + *ppos += len; + + return 0; +} + +static ctl_table dn_table[] = { + { + .ctl_name = NET_DECNET_NODE_ADDRESS, + .procname = "node_address", + .maxlen = 7, + .mode = 0644, + .proc_handler = dn_node_address_handler, + .strategy = dn_node_address_strategy, + }, + { + .ctl_name = NET_DECNET_NODE_NAME, + .procname = "node_name", + .data = node_name, + .maxlen = 7, + .mode = 0644, + .proc_handler = &proc_dostring, + .strategy = &sysctl_string, + }, + { + .ctl_name = NET_DECNET_DEFAULT_DEVICE, + .procname = "default_device", + .maxlen = 16, + .mode = 0644, + .proc_handler = dn_def_dev_handler, + .strategy = dn_def_dev_strategy, + }, + { + .ctl_name = NET_DECNET_TIME_WAIT, + .procname = "time_wait", + .data = &decnet_time_wait, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &min_decnet_time_wait, + .extra2 = &max_decnet_time_wait + }, + { + .ctl_name = NET_DECNET_DN_COUNT, + .procname = "dn_count", + .data = &decnet_dn_count, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &min_state_count, + .extra2 = &max_state_count + }, + { + .ctl_name = NET_DECNET_DI_COUNT, + .procname = "di_count", + .data = &decnet_di_count, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &min_state_count, + .extra2 = &max_state_count + }, + { + .ctl_name = NET_DECNET_DR_COUNT, + .procname = "dr_count", + .data = &decnet_dr_count, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &min_state_count, + .extra2 = &max_state_count + }, + { + .ctl_name = NET_DECNET_DST_GC_INTERVAL, + .procname = "dst_gc_interval", + .data = &decnet_dst_gc_interval, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &min_decnet_dst_gc_interval, + .extra2 = &max_decnet_dst_gc_interval + }, + { + .ctl_name = NET_DECNET_NO_FC_MAX_CWND, + .procname = "no_fc_max_cwnd", + .data = &decnet_no_fc_max_cwnd, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec_minmax, + .strategy = &sysctl_intvec, + .extra1 = &min_decnet_no_fc_max_cwnd, + .extra2 = &max_decnet_no_fc_max_cwnd + }, + { + .ctl_name = NET_DECNET_DEBUG_LEVEL, + .procname = "debug", + .data = &decnet_debug_level, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + .strategy = &sysctl_intvec, + }, + {0} +}; + +static ctl_table dn_dir_table[] = { + { + .ctl_name = NET_DECNET, + .procname = "decnet", + .mode = 0555, + .child = dn_table}, + {0} +}; + +static ctl_table dn_root_table[] = { + { + .ctl_name = CTL_NET, + .procname = "net", + .mode = 0555, + .child = dn_dir_table + }, + {0} +}; + +void dn_register_sysctl(void) +{ + dn_table_header = register_sysctl_table(dn_root_table, 1); +} + +void dn_unregister_sysctl(void) +{ + unregister_sysctl_table(dn_table_header); +} + +#else /* CONFIG_SYSCTL */ +void dn_unregister_sysctl(void) +{ +} +void dn_register_sysctl(void) +{ +} + +#endif |