cregit-Linux how code gets into the kernel

Release 4.11 net/decnet/dn_dev.c

Directory: net/decnet
/*
 * 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 Device Layer
 *
 * Authors:     Steve Whitehouse <SteveW@ACM.org>
 *              Eduardo Marcelo Serrat <emserrat@geocities.com>
 *
 * Changes:
 *          Steve Whitehouse : Devices now see incoming frames so they
 *                             can mark on who it came from.
 *          Steve Whitehouse : Fixed bug in creating neighbours. Each neighbour
 *                             can now have a device specific setup func.
 *          Steve Whitehouse : Added /proc/sys/net/decnet/conf/<dev>/
 *          Steve Whitehouse : Fixed bug which sometimes killed timer
 *          Steve Whitehouse : Multiple ifaddr support
 *          Steve Whitehouse : SIOCGIFCONF is now a compile time option
 *          Steve Whitehouse : /proc/sys/net/decnet/conf/<sys>/forwarding
 *          Steve Whitehouse : Removed timer1 - it's a user space issue now
 *         Patrick Caulfield : Fixed router hello message format
 *          Steve Whitehouse : Got rid of constant sizes for blksize for
 *                             devices. All mtu based now.
 */

#include <linux/capability.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/net.h>
#include <linux/netdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/if_addr.h>
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#include <linux/skbuff.h>
#include <linux/sysctl.h>
#include <linux/notifier.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/uaccess.h>
#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/flow.h>
#include <net/fib_rules.h>
#include <net/netlink.h>
#include <net/dn.h>
#include <net/dn_dev.h>
#include <net/dn_route.h>
#include <net/dn_neigh.h>
#include <net/dn_fib.h>


#define DN_IFREQ_SIZE (sizeof(struct ifreq) - sizeof(struct sockaddr) + sizeof(struct sockaddr_dn))


static char dn_rt_all_end_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x04,0x00,0x00};

static char dn_rt_all_rt_mcast[ETH_ALEN]  = {0xAB,0x00,0x00,0x03,0x00,0x00};

static char dn_hiord[ETH_ALEN]            = {0xAA,0x00,0x04,0x00,0x00,0x00};

static unsigned char dn_eco_version[3]    = {0x02,0x00,0x00};

extern struct neigh_table dn_neigh_table;

/*
 * decnet_address is kept in network order.
 */

__le16 decnet_address = 0;

static DEFINE_SPINLOCK(dndev_lock);

static struct net_device *decnet_default_device;
static BLOCKING_NOTIFIER_HEAD(dnaddr_chain);

static struct dn_dev *dn_dev_create(struct net_device *dev, int *err);
static void dn_dev_delete(struct net_device *dev);
static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa);

static int dn_eth_up(struct net_device *);
static void dn_eth_down(struct net_device *);
static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa);
static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa);


static struct dn_dev_parms dn_dev_list[] =  {
{
	.type =		ARPHRD_ETHER, /* Ethernet */
	.mode =		DN_DEV_BCAST,
	.state =	DN_DEV_S_RU,
	.t2 =		1,
	.t3 =		10,
	.name =		"ethernet",
	.up =		dn_eth_up,
	.down = 	dn_eth_down,
	.timer3 =	dn_send_brd_hello,
},
{
	.type =		ARPHRD_IPGRE, /* DECnet tunneled over GRE in IP */
	.mode =		DN_DEV_BCAST,
	.state =	DN_DEV_S_RU,
	.t2 =		1,
	.t3 =		10,
	.name =		"ipgre",
	.timer3 =	dn_send_brd_hello,
},
#if 0
{
        .type =         ARPHRD_X25, /* Bog standard X.25 */
	.mode =         DN_DEV_UCAST,
        .state =        DN_DEV_S_DS,
        .t2 =           1,
        .t3 =           120,
        .name =         "x25",
        .timer3 =       dn_send_ptp_hello,
},
#endif
#if 0
{
        .type =         ARPHRD_PPP, /* DECnet over PPP */
	.mode =         DN_DEV_BCAST,
        .state =        DN_DEV_S_RU,
        .t2 =           1,
        .t3 =           10,
        .name =         "ppp",
        .timer3 =       dn_send_brd_hello,
},
#endif
{
	.type =		ARPHRD_DDCMP, /* DECnet over DDCMP */
	.mode =		DN_DEV_UCAST,
	.state =	DN_DEV_S_DS,
	.t2 =		1,
	.t3 =		120,
	.name =		"ddcmp",
	.timer3 =	dn_send_ptp_hello,
},
{
	.type =		ARPHRD_LOOPBACK, /* Loopback interface - always last */
	.mode =		DN_DEV_BCAST,
	.state =	DN_DEV_S_RU,
	.t2 =		1,
	.t3 =		10,
	.name =		"loopback",
	.timer3 =	dn_send_brd_hello,
}
};


#define DN_DEV_LIST_SIZE ARRAY_SIZE(dn_dev_list)


#define DN_DEV_PARMS_OFFSET(x) offsetof(struct dn_dev_parms, x)

#ifdef CONFIG_SYSCTL


static int min_t2[] = { 1 };

static int max_t2[] = { 60 }; 
/* No max specified, but this seems sensible */

static int min_t3[] = { 1 };

static int max_t3[] = { 8191 }; 
/* Must fit in 16 bits when multiplied by BCT3MULT or T3MULT */


static int min_priority[1];

static int max_priority[] = { 127 }; 
/* From DECnet spec */

static int dn_forwarding_proc(struct ctl_table *, int,
			void __user *, size_t *, loff_t *);

static struct dn_dev_sysctl_table {
	
struct ctl_table_header *sysctl_header;
	
struct ctl_table dn_dev_vars[5];
} 
dn_dev_sysctl = {
	NULL,
	{
	{
		.procname = "forwarding",
		.data = (void *)DN_DEV_PARMS_OFFSET(forwarding),
		.maxlen = sizeof(int),
		.mode = 0644,
		.proc_handler = dn_forwarding_proc,
        },
	{
		.procname = "priority",
		.data = (void *)DN_DEV_PARMS_OFFSET(priority),
		.maxlen = sizeof(int),
		.mode = 0644,
		.proc_handler = proc_dointvec_minmax,
		.extra1 = &min_priority,
		.extra2 = &max_priority
	},
	{
		.procname = "t2",
		.data = (void *)DN_DEV_PARMS_OFFSET(t2),
		.maxlen = sizeof(int),
		.mode = 0644,
		.proc_handler = proc_dointvec_minmax,
		.extra1 = &min_t2,
		.extra2 = &max_t2
	},
	{
		.procname = "t3",
		.data = (void *)DN_DEV_PARMS_OFFSET(t3),
		.maxlen = sizeof(int),
		.mode = 0644,
		.proc_handler = proc_dointvec_minmax,
		.extra1 = &min_t3,
		.extra2 = &max_t3
	},
	{ }
	},
};


static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms) { struct dn_dev_sysctl_table *t; int i; char path[sizeof("net/decnet/conf/") + IFNAMSIZ]; t = kmemdup(&dn_dev_sysctl, sizeof(*t), GFP_KERNEL); if (t == NULL) return; for(i = 0; i < ARRAY_SIZE(t->dn_dev_vars) - 1; i++) { long offset = (long)t->dn_dev_vars[i].data; t->dn_dev_vars[i].data = ((char *)parms) + offset; } snprintf(path, sizeof(path), "net/decnet/conf/%s", dev? dev->name : parms->name); t->dn_dev_vars[0].extra1 = (void *)dev; t->sysctl_header = register_net_sysctl(&init_net, path, t->dn_dev_vars); if (t->sysctl_header == NULL) kfree(t); else parms->sysctl = t; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)12968.98%337.50%
Eric W. Biedermann2915.51%225.00%
Pavel Emelyanov2412.83%112.50%
Arnaldo Carvalho de Melo42.14%112.50%
Andries E. Brouwer10.53%112.50%
Total187100.00%8100.00%


static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms) { if (parms->sysctl) { struct dn_dev_sysctl_table *t = parms->sysctl; parms->sysctl = NULL; unregister_net_sysctl_table(t->sysctl_header); kfree(t); } }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4597.83%150.00%
Eric W. Biedermann12.17%150.00%
Total46100.00%2100.00%


static int dn_forwarding_proc(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { #ifdef CONFIG_DECNET_ROUTER struct net_device *dev = table->extra1; struct dn_dev *dn_db; int err; int tmp, old; if (table->extra1 == NULL) return -EINVAL; dn_db = rcu_dereference_raw(dev->dn_ptr); old = dn_db->parms.forwarding; err = proc_dointvec(table, write, buffer, lenp, ppos); if ((err >= 0) && write) { if (dn_db->parms.forwarding < 0) dn_db->parms.forwarding = 0; if (dn_db->parms.forwarding > 2) dn_db->parms.forwarding = 2; /* * What an ugly hack this is... its works, just. It * would be nice if sysctl/proc were just that little * bit more flexible so I don't have to write a special * routine, or suffer hacks like this - SJW */ tmp = dn_db->parms.forwarding; dn_db->parms.forwarding = old; if (dn_db->parms.down) dn_db->parms.down(dev); dn_db->parms.forwarding = tmp; if (dn_db->parms.up) dn_db->parms.up(dev); } return err; #else return -EINVAL; #endif }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)20394.86%233.33%
Linus Torvalds62.80%116.67%
Eric Dumazet31.40%116.67%
Al Viro10.47%116.67%
Joe Perches10.47%116.67%
Total214100.00%6100.00%

#else /* CONFIG_SYSCTL */
static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms) { }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明10100.00%1100.00%
Total10100.00%1100.00%


static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms) { }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明15100.00%1100.00%
Total15100.00%1100.00%

#endif /* CONFIG_SYSCTL */
static inline __u16 mtu2blksize(struct net_device *dev) { u32 blksize = dev->mtu; if (blksize > 0xffff) blksize = 0xffff; if (dev->type == ARPHRD_ETHER || dev->type == ARPHRD_PPP || dev->type == ARPHRD_IPGRE || dev->type == ARPHRD_LOOPBACK) blksize -= 2; return (__u16)blksize; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明6396.92%150.00%
Linus Torvalds (pre-git)23.08%150.00%
Total65100.00%2100.00%


static struct dn_ifaddr *dn_dev_alloc_ifa(void) { struct dn_ifaddr *ifa; ifa = kzalloc(sizeof(*ifa), GFP_KERNEL); return ifa; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)3096.77%150.00%
Panagiotis Issaris13.23%150.00%
Total31100.00%2100.00%


static void dn_dev_free_ifa(struct dn_ifaddr *ifa) { kfree_rcu(ifa, rcu); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1583.33%133.33%
Lai Jiangshan211.11%133.33%
Eric Dumazet15.56%133.33%
Total18100.00%3100.00%


static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr __rcu **ifap, int destroy) { struct dn_ifaddr *ifa1 = rtnl_dereference(*ifap); unsigned char mac_addr[6]; struct net_device *dev = dn_db->dev; ASSERT_RTNL(); *ifap = ifa1->ifa_next; if (dn_db->dev->type == ARPHRD_ETHER) { if (ifa1->ifa_local != dn_eth2dn(dev->dev_addr)) { dn_dn2eth(mac_addr, ifa1->ifa_local); dev_mc_del(dev, mac_addr); } } dn_ifaddr_notify(RTM_DELADDR, ifa1); blocking_notifier_call_chain(&dnaddr_chain, NETDEV_DOWN, ifa1); if (destroy) { dn_dev_free_ifa(ifa1); if (dn_db->ifa_list == NULL) dn_dev_delete(dn_db->dev); } }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse8357.64%228.57%
Linus Torvalds (pre-git)5437.50%114.29%
Eric Dumazet42.78%114.29%
Jiri Pirko10.69%114.29%
Alan Stern10.69%114.29%
Thomas Graf10.69%114.29%
Total144100.00%7100.00%


static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa) { struct net_device *dev = dn_db->dev; struct dn_ifaddr *ifa1; unsigned char mac_addr[6]; ASSERT_RTNL(); /* Check for duplicates */ for (ifa1 = rtnl_dereference(dn_db->ifa_list); ifa1 != NULL; ifa1 = rtnl_dereference(ifa1->ifa_next)) { if (ifa1->ifa_local == ifa->ifa_local) return -EEXIST; } if (dev->type == ARPHRD_ETHER) { if (ifa->ifa_local != dn_eth2dn(dev->dev_addr)) { dn_dn2eth(mac_addr, ifa->ifa_local); dev_mc_add(dev, mac_addr); } } ifa->ifa_next = dn_db->ifa_list; rcu_assign_pointer(dn_db->ifa_list, ifa); dn_ifaddr_notify(RTM_NEWADDR, ifa); blocking_notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse10767.30%228.57%
Linus Torvalds (pre-git)3823.90%114.29%
Eric Dumazet127.55%228.57%
Thomas Graf10.63%114.29%
Alan Stern10.63%114.29%
Total159100.00%7100.00%


static int dn_dev_set_ifa(struct net_device *dev, struct dn_ifaddr *ifa) { struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr); int rv; if (dn_db == NULL) { int err; dn_db = dn_dev_create(dev, &err); if (dn_db == NULL) return err; } ifa->ifa_dev = dn_db; if (dev->flags & IFF_LOOPBACK) ifa->ifa_scope = RT_SCOPE_HOST; rv = dn_dev_insert_ifa(dn_db, ifa); if (rv) dn_dev_free_ifa(ifa); return rv; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)8280.39%250.00%
Steven Whitehouse1716.67%125.00%
Eric Dumazet32.94%125.00%
Total102100.00%4100.00%


int dn_dev_ioctl(unsigned int cmd, void __user *arg) { char buffer[DN_IFREQ_SIZE]; struct ifreq *ifr = (struct ifreq *)buffer; struct sockaddr_dn *sdn = (struct sockaddr_dn *)&ifr->ifr_addr; struct dn_dev *dn_db; struct net_device *dev; struct dn_ifaddr *ifa = NULL; struct dn_ifaddr __rcu **ifap = NULL; int ret = 0; if (copy_from_user(ifr, arg, DN_IFREQ_SIZE)) return -EFAULT; ifr->ifr_name[IFNAMSIZ-1] = 0; dev_load(&init_net, ifr->ifr_name); switch (cmd) { case SIOCGIFADDR: break; case SIOCSIFADDR: if (!capable(CAP_NET_ADMIN)) return -EACCES; if (sdn->sdn_family != AF_DECnet) return -EINVAL; break; default: return -EINVAL; } rtnl_lock(); if ((dev = __dev_get_by_name(&init_net, ifr->ifr_name)) == NULL) { ret = -ENODEV; goto done; } if ((dn_db = rtnl_dereference(dev->dn_ptr)) != NULL) { for (ifap = &dn_db->ifa_list; (ifa = rtnl_dereference(*ifap)) != NULL; ifap = &ifa->ifa_next) if (strcmp(ifr->ifr_name, ifa->ifa_label) == 0) break; } if (ifa == NULL && cmd != SIOCSIFADDR) { ret = -EADDRNOTAVAIL; goto done; } switch (cmd) { case SIOCGIFADDR: *((__le16 *)sdn->sdn_nodeaddr) = ifa->ifa_local; goto rarok; case SIOCSIFADDR: if (!ifa) { if ((ifa = dn_dev_alloc_ifa()) == NULL) { ret = -ENOBUFS; break; } memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); } else { if (ifa->ifa_local == dn_saddr2dn(sdn)) break; dn_dev_del_ifa(dn_db, ifap, 0); } ifa->ifa_local = ifa->ifa_address = dn_saddr2dn(sdn); ret = dn_dev_set_ifa(dev, ifa); } done: rtnl_unlock(); return ret; rarok: if (copy_to_user(arg, ifr, DN_IFREQ_SIZE)) ret = -EFAULT; goto done; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)38292.49%436.36%
Steven Whitehouse133.15%327.27%
Eric Dumazet102.42%19.09%
Eric W. Biedermann61.45%19.09%
Al Viro10.24%19.09%
David S. Miller10.24%19.09%
Total413100.00%11100.00%


struct net_device *dn_dev_get_default(void) { struct net_device *dev; spin_lock(&dndev_lock); dev = decnet_default_device; if (dev) { if (dev->dn_ptr) dev_hold(dev); else dev = NULL; } spin_unlock(&dndev_lock); return dev; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明5396.36%150.00%
Stephen Hemminger23.64%150.00%
Total55100.00%2100.00%


int dn_dev_set_default(struct net_device *dev, int force) { struct net_device *old = NULL; int rv = -EBUSY; if (!dev->dn_ptr) return -ENODEV; spin_lock(&dndev_lock); if (force || decnet_default_device == NULL) { old = decnet_default_device; decnet_default_device = dev; rv = 0; } spin_unlock(&dndev_lock); if (old) dev_put(old); return rv; }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明8096.39%133.33%
Stephen Hemminger22.41%133.33%
Patrick Caulfield11.20%133.33%
Total83100.00%3100.00%


static void dn_dev_check_default(struct net_device *dev) { spin_lock(&dndev_lock); if (dev == decnet_default_device) { decnet_default_device = NULL; } else { dev = NULL; } spin_unlock(&dndev_lock); if (dev) dev_put(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Hideaki Yoshifuji / 吉藤英明4996.08%150.00%
Stephen Hemminger23.92%150.00%
Total51100.00%2100.00%

/* * Called with RTNL */
static struct dn_dev *dn_dev_by_index(int ifindex) { struct net_device *dev; struct dn_dev *dn_dev = NULL; dev = __dev_get_by_index(&init_net, ifindex); if (dev) dn_dev = rtnl_dereference(dev->dn_ptr); return dn_dev; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4285.71%240.00%
Eric Dumazet48.16%240.00%
Eric W. Biedermann36.12%120.00%
Total49100.00%5100.00%

static const struct nla_policy dn_ifa_policy[IFA_MAX+1] = { [IFA_ADDRESS] = { .type = NLA_U16 }, [IFA_LOCAL] = { .type = NLA_U16 }, [IFA_LABEL] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 }, [IFA_FLAGS] = { .type = NLA_U32 }, };
static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct nlattr *tb[IFA_MAX+1]; struct dn_dev *dn_db; struct ifaddrmsg *ifm; struct dn_ifaddr *ifa; struct dn_ifaddr __rcu **ifap; int err = -EINVAL; if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!net_eq(net, &init_net)) goto errout; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy); if (err < 0) goto errout; err = -ENODEV; ifm = nlmsg_data(nlh); if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL) goto errout; err = -EADDRNOTAVAIL; for (ifap = &dn_db->ifa_list; (ifa = rtnl_dereference(*ifap)) != NULL; ifap = &ifa->ifa_next) { if (tb[IFA_LOCAL] && nla_memcmp(tb[IFA_LOCAL], &ifa->ifa_local, 2)) continue; if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label)) continue; dn_dev_del_ifa(dn_db, ifap, 1); return 0; } errout: return err; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)11847.77%111.11%
Thomas Graf6727.13%111.11%
Denis V. Lunev218.50%111.11%
Eric W. Biedermann145.67%222.22%
Pavel Emelyanov104.05%111.11%
Eric Dumazet93.64%111.11%
Octavian Purdila52.02%111.11%
Hideaki Yoshifuji / 吉藤英明31.21%111.11%
Total247100.00%9100.00%


static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) { struct net *net = sock_net(skb->sk); struct nlattr *tb[IFA_MAX+1]; struct net_device *dev; struct dn_dev *dn_db; struct ifaddrmsg *ifm; struct dn_ifaddr *ifa; int err; if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!net_eq(net, &init_net)) return -EINVAL; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy); if (err < 0) return err; if (tb[IFA_LOCAL] == NULL) return -EINVAL; ifm = nlmsg_data(nlh); if ((dev = __dev_get_by_index(&init_net, ifm->ifa_index)) == NULL) return -ENODEV; if ((dn_db = rtnl_dereference(dev->dn_ptr)) == NULL) { dn_db = dn_dev_create(dev, &err); if (!dn_db) return err; } if ((ifa = dn_dev_alloc_ifa()) == NULL) return -ENOBUFS; if (tb[IFA_ADDRESS] == NULL) tb[IFA_ADDRESS] = tb[IFA_LOCAL]; ifa->ifa_local = nla_get_le16(tb[IFA_LOCAL]); ifa->ifa_address = nla_get_le16(tb[IFA_ADDRESS]); ifa->ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags; ifa->ifa_scope = ifm->ifa_scope; ifa->ifa_dev = dn_db; if (tb[IFA_LABEL]) nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ); else memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); err = dn_dev_insert_ifa(dn_db, ifa); if (err) dn_dev_free_ifa(ifa); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)18654.07%321.43%
Thomas Graf6218.02%17.14%
Steven Whitehouse3610.47%214.29%
Denis V. Lunev195.52%17.14%
Eric W. Biedermann174.94%321.43%
Jiri Pirko133.78%17.14%
Octavian Purdila51.45%17.14%
Hideaki Yoshifuji / 吉藤英明30.87%17.14%
Eric Dumazet30.87%17.14%
Total344100.00%14100.00%


static inline size_t dn_ifaddr_nlmsg_size(void) { return NLMSG_ALIGN(sizeof(struct ifaddrmsg)) + nla_total_size(IFNAMSIZ) /* IFA_LABEL */ + nla_total_size(2) /* IFA_ADDRESS */ + nla_total_size(2) /* IFA_LOCAL */ + nla_total_size(4); /* IFA_FLAGS */ }

Contributors

PersonTokensPropCommitsCommitProp
Thomas Graf3683.72%150.00%
Jiri Pirko716.28%150.00%
Total43100.00%2100.00%


static int dn_nl_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa, u32 portid, u32 seq, int event, unsigned int flags) { struct ifaddrmsg *ifm; struct nlmsghdr *nlh; u32 ifa_flags = ifa->ifa_flags | IFA_F_PERMANENT; nlh = nlmsg_put(skb, portid, seq, event, sizeof(*ifm), flags); if (nlh == NULL) return -EMSGSIZE; ifm = nlmsg_data(nlh); ifm->ifa_family = AF_DECnet; ifm->ifa_prefixlen = 16; ifm->ifa_flags = ifa_flags; ifm->ifa_scope = ifa->ifa_scope; ifm->ifa_index = ifa->ifa_dev->dev->ifindex; if ((ifa->ifa_address && nla_put_le16(skb, IFA_ADDRESS, ifa->ifa_address)) || (ifa->ifa_local && nla_put_le16(skb, IFA_LOCAL, ifa->ifa_local)) || (ifa->ifa_label[0] && nla_put_string(skb, IFA_LABEL, ifa->ifa_label)) || nla_put_u32(skb, IFA_FLAGS, ifa_flags)) goto nla_put_failure; nlmsg_end(skb, nlh); return 0; nla_put_failure: nlmsg_cancel(skb, nlh); return -EMSGSIZE; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)12658.60%220.00%
Thomas Graf209.30%110.00%
David S. Miller188.37%110.00%
Jiri Pirko188.37%110.00%
Steven Whitehouse177.91%110.00%
Jamal Hadi Salim62.79%110.00%
Patrick McHardy52.33%110.00%
Johannes Berg31.40%110.00%
Eric W. Biedermann20.93%110.00%
Total215100.00%10100.00%


static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa) { struct sk_buff *skb; int err = -ENOBUFS; skb = alloc_skb(dn_ifaddr_nlmsg_size(), GFP_KERNEL); if (skb == NULL) goto errout; err = dn_nl_fill_ifaddr(skb, ifa, 0, 0, event, 0); if (err < 0) { /* -EMSGSIZE implies BUG in dn_ifaddr_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); kfree_skb(skb); goto errout; } rtnl_notify(skb, &init_net, 0, RTNLGRP_DECnet_IFADDR, NULL, GFP_KERNEL); return; errout: if (err < 0) rtnl_set_sk_err(&init_net, RTNLGRP_DECnet_IFADDR, err); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5847.93%218.18%
Thomas Graf3226.45%436.36%
Patrick McHardy2218.18%218.18%
Denis V. Lunev64.96%19.09%
Jamal Hadi Salim21.65%19.09%
Pablo Neira Ayuso10.83%19.09%
Total121100.00%11100.00%


static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) { struct net *net = sock_net(skb->sk); int idx, dn_idx = 0, skip_ndevs, skip_naddr; struct net_device *dev; struct dn_dev *dn_db; struct dn_ifaddr *ifa; if (!net_eq(net, &init_net)) return 0; skip_ndevs = cb->args[0]; skip_naddr = cb->args[1]; idx = 0; rcu_read_lock(); for_each_netdev_rcu(&init_net, dev) { if (idx < skip_ndevs) goto cont; else if (idx > skip_ndevs) { /* Only skip over addresses for first dev dumped * in this iteration (idx == skip_ndevs) */ skip_naddr = 0; } if ((dn_db = rcu_dereference(dev->dn_ptr)) == NULL) goto cont; for (ifa = rcu_dereference(dn_db->ifa_list), dn_idx = 0; ifa; ifa = rcu_dereference(ifa->ifa_next), dn_idx++) { if (dn_idx < skip_naddr) continue; if (dn_nl_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWADDR, NLM_F_MULTI) < 0) goto done; } cont: idx++; } done: rcu_read_unlock(); cb->args[0] = idx; cb->args[1] = dn_idx; return skb->len; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)16466.67%425.00%
Denis V. Lunev187.32%16.25%
Thomas Graf187.32%16.25%
Eric Dumazet166.50%212.50%
Pavel Emelyanov156.10%16.25%
Octavian Purdila52.03%16.25%
Eric W. Biedermann31.22%212.50%
Hideaki Yoshifuji / 吉藤英明31.22%16.25%
Jamal Hadi Salim20.81%16.25%
Patrick McHardy10.41%16.25%
Steven Whitehouse10.41%16.25%
Total246100.00%16100.00%


static int dn_dev_get_first(struct net_device *dev, __le16 *addr) { struct dn_dev *dn_db; struct dn_ifaddr *ifa; int rv = -ENODEV; rcu_read_lock(); dn_db = rcu_dereference(dev->dn_ptr); if (dn_db == NULL) goto out; ifa = rcu_dereference(dn_db->ifa_list); if (ifa != NULL) { *addr = ifa->ifa_local; rv = 0; } out: rcu_read_unlock(); return rv; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse5056.82%240.00%
Linus Torvalds (pre-git)2022.73%240.00%
Eric Dumazet1820.45%120.00%
Total88100.00%5100.00%

/* * Find a default address to bind to. * * This is one of those areas where the initial VMS concepts don't really * map onto the Linux concepts, and since we introduced multiple addresses * per interface we have to cope with slightly odd ways of finding out what * "our address" really is. Mostly it's not a problem; for this we just guess * a sensible default. Eventually the routing code will take care of all the * nasties for us I hope. */
int dn_dev_bind_default(__le16 *addr) { struct net_device *dev; int rv; dev = dn_dev_get_default(); last_chance: if (dev) { rv = dn_dev_get_first(dev, addr); dev_put(dev); if (rv == 0 || dev == init_net.loopback_dev) return rv; } dev = init_net.loopback_dev; dev_hold(dev); goto last_chance; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse6994.52%266.67%
Eric W. Biedermann45.48%133.33%
Total73100.00%3100.00%


static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa) { struct endnode_hello_message *msg; struct sk_buff *skb = NULL; __le16 *pktlen; struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); if ((skb = dn_alloc_skb(NULL, sizeof(*msg), GFP_ATOMIC)) == NULL) return; skb->dev = dev; msg = (struct endnode_hello_message *)skb_put(skb,sizeof(*msg)); msg->msgflg = 0x0D; memcpy(msg->tiver, dn_eco_version, 3); dn_dn2eth(msg->id, ifa->ifa_local); msg->iinfo = DN_RT_INFO_ENDN; msg->blksize = cpu_to_le16(mtu2blksize(dev)); msg->area = 0x00; memset(msg->seed, 0, 8); memcpy(msg->neighbor, dn_hiord, ETH_ALEN); if (dn_db->router) { struct dn_neigh *dn = (struct dn_neigh *)dn_db->router; dn_dn2eth(msg->neighbor, dn->addr); } msg->timer = cpu_to_le16((unsigned short)dn_db->parms.t3); msg->mpd = 0x00; msg->datalen = 0x02; memset(msg->data, 0xAA, 2); pktlen = (__le16 *)skb_push(skb,2); *pktlen = cpu_to_le16(skb->len - 2); skb_reset_network_header(skb); dn_rt_finish_output(skb, dn_rt_all_rt_mcast, msg->id); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)18064.75%225.00%
Steven Whitehouse8932.01%337.50%
Arnaldo Carvalho de Melo31.08%112.50%
Eric Dumazet31.08%112.50%
Harvey Harrison31.08%112.50%
Total278100.00%8100.00%

#define DRDELAY (5 * HZ)
static int dn_am_i_a_router(struct dn_neigh *dn, struct dn_dev *dn_db, struct dn_ifaddr *ifa) { /* First check time since device went up */ if (time_before(jiffies, dn_db->uptime + DRDELAY)) return 0; /* If there is no router, then yes... */ if (!dn_db->router) return 1; /* otherwise only if we have a higher priority or.. */ if (dn->priority < dn_db->parms.priority) return 1; /* if we have equal priority and a higher node number */ if (dn->priority != dn_db->parms.priority) return 0; if (le16_to_cpu(dn->addr) < le16_to_cpu(ifa->ifa_local)) return 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)8885.44%125.00%
Steven Whitehouse87.77%125.00%
Himangi Saraogi54.85%125.00%
Harvey Harrison21.94%125.00%
Total103100.00%4100.00%


static void dn_send_router_hello(struct net_device *dev, struct dn_ifaddr *ifa) { int n; struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); struct dn_neigh *dn = (struct dn_neigh *)dn_db->router; struct sk_buff *skb; size_t size; unsigned char *ptr; unsigned char *i1, *i2; __le16 *pktlen; char *src; if (mtu2blksize(dev) < (26 + 7)) return; n = mtu2blksize(dev) - 26; n /= 7; if (n > 32) n = 32; size = 2 + 26 + 7 * n; if ((skb = dn_alloc_skb(NULL, size, GFP_ATOMIC)) == NULL) return; skb->dev = dev; ptr = skb_put(skb, size); *ptr++ = DN_RT_PKT_CNTL | DN_RT_PKT_ERTH; *ptr++ = 2; /* ECO */ *ptr++ = 0; *ptr++ = 0; dn_dn2eth(ptr, ifa->ifa_local); src = ptr; ptr += ETH_ALEN; *ptr++ = dn_db->parms.forwarding == 1 ? DN_RT_INFO_L1RT : DN_RT_INFO_L2RT; *((__le16 *)ptr) = cpu_to_le16(mtu2blksize(dev)); ptr += 2; *ptr++ = dn_db->parms.priority; /* Priority */ *ptr++ = 0; /* Area: Reserved */ *((__le16 *)ptr) = cpu_to_le16((unsigned short)dn_db->parms.t3); ptr += 2; *ptr++ = 0; /* MPD: Reserved */ i1 = ptr++; memset(ptr, 0, 7); /* Name: Reserved */ ptr += 7; i2 = ptr++; n = dn_neigh_elist(dev, ptr, n); *i2 = 7 * n; *i1 = 8 + *i2; skb_trim(skb, (27 + *i2)); pktlen = (__le16 *)skb_push(skb, 2); *pktlen = cpu_to_le16(skb->len - 2); skb_reset_network_header(skb); if (dn_am_i_a_router(dn, dn_db, ifa)) { struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC); if (skb2) { dn_rt_finish_output(skb2, dn_rt_all_end_mcast, src); } } dn_rt_finish_output(skb, dn_rt_all_rt_mcast, src); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)37988.76%545.45%
Steven Whitehouse399.13%327.27%
Eric Dumazet30.70%19.09%
Harvey Harrison30.70%19.09%
Arnaldo Carvalho de Melo30.70%19.09%
Total427100.00%11100.00%


static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa) { struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); if (dn_db->parms.forwarding == 0) dn_send_endnode_hello(dev, ifa); else dn_send_router_hello(dev, ifa); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4177.36%360.00%
Steven Whitehouse916.98%120.00%
Eric Dumazet35.66%120.00%
Total53100.00%5100.00%


static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa) { int tdlen = 16; int size = dev->hard_header_len + 2 + 4 + tdlen; struct sk_buff *skb = dn_alloc_skb(NULL, size, GFP_ATOMIC); int i; unsigned char *ptr; char src[ETH_ALEN]; if (skb == NULL) return ; skb->dev = dev; skb_push(skb, dev->hard_header_len); ptr = skb_put(skb, 2 + 4 + tdlen); *ptr++ = DN_RT_PKT_HELO; *((__le16 *)ptr) = ifa->ifa_local; ptr += 2; *ptr++ = tdlen; for(i = 0; i < tdlen; i++) *ptr++ = 0252; dn_dn2eth(src, ifa->ifa_local); dn_rt_finish_output(skb, dn_rt_all_rt_mcast, src); }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse14588.96%250.00%
Linus Torvalds (pre-git)1811.04%250.00%
Total163100.00%4100.00%


static int dn_eth_up(struct net_device *dev) { struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); if (dn_db->parms.forwarding == 0) dev_mc_add(dev, dn_rt_all_end_mcast); else dev_mc_add(dev, dn_rt_all_rt_mcast); dn_db->use_long = 1; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse3459.65%125.00%
Linus Torvalds (pre-git)2035.09%250.00%
Eric Dumazet35.26%125.00%
Total57100.00%4100.00%


static void dn_eth_down(struct net_device *dev) { struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); if (dn_db->parms.forwarding == 0) dev_mc_del(dev, dn_rt_all_end_mcast); else dev_mc_del(dev, dn_rt_all_rt_mcast); }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse4389.58%133.33%
Eric Dumazet36.25%133.33%
Jiri Pirko24.17%133.33%
Total48100.00%3100.00%

static void dn_dev_set_timer(struct net_device *dev);
static void dn_dev_timer_func(unsigned long arg) { struct net_device *dev = (struct net_device *)arg; struct dn_dev *dn_db; struct dn_ifaddr *ifa; rcu_read_lock(); dn_db = rcu_dereference(dev->dn_ptr); if (dn_db->t3 <= dn_db->parms.t2) { if (dn_db->parms.timer3) { for (ifa = rcu_dereference(dn_db->ifa_list); ifa; ifa = rcu_dereference(ifa->ifa_next)) { if (!(ifa->ifa_flags & IFA_F_SECONDARY)) dn_db->parms.timer3(dev, ifa); } } dn_db->t3 = dn_db->parms.t3; } else { dn_db->t3 -= dn_db->parms.t2; } rcu_read_unlock(); dn_dev_set_timer(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)8659.31%250.00%
Steven Whitehouse3826.21%125.00%
Eric Dumazet2114.48%125.00%
Total145100.00%4100.00%


static void dn_dev_set_timer(struct net_device *dev) { struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); if (dn_db->parms.t2 > dn_db->parms.t3) dn_db->parms.t2 = dn_db->parms.t3; dn_db->timer.data = (unsigned long)dev; dn_db->timer.function = dn_dev_timer_func; dn_db->timer.expires = jiffies + (dn_db->parms.t2 * HZ); add_timer(&dn_db->timer); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)9296.84%266.67%
Eric Dumazet33.16%133.33%
Total95100.00%3100.00%


static struct dn_dev *dn_dev_create(struct net_device *dev, int *err) { int i; struct dn_dev_parms *p = dn_dev_list; struct dn_dev *dn_db; for(i = 0; i < DN_DEV_LIST_SIZE; i++, p++) { if (p->type == dev->type) break; } *err = -ENODEV; if (i == DN_DEV_LIST_SIZE) return NULL; *err = -ENOBUFS; if ((dn_db = kzalloc(sizeof(struct dn_dev), GFP_ATOMIC)) == NULL) return NULL; memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms)); rcu_assign_pointer(dev->dn_ptr, dn_db); dn_db->dev = dev; init_timer(&dn_db->timer); dn_db->uptime = jiffies; dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table); if (!dn_db->neigh_parms) { RCU_INIT_POINTER(dev->dn_ptr, NULL); kfree(dn_db); return NULL; } if (dn_db->parms.up) { if (dn_db->parms.up(dev) < 0) { neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms); dev->dn_ptr = NULL; kfree(dn_db); return NULL; } } dn_dev_sysctl_register(dev, &dn_db->parms); dn_dev_set_timer(dev); *err = 0; return dn_db; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)20579.15%225.00%
Eric W. Biedermann4416.99%112.50%
Eric Dumazet72.70%225.00%
Roel Kluin10.39%112.50%
Stephen Hemminger10.39%112.50%
Panagiotis Issaris10.39%112.50%
Total259100.00%8100.00%

/* * This processes a device up event. We only start up * the loopback device & ethernet devices with correct * MAC addresses automatically. Others must be started * specifically. * * FIXME: How should we configure the loopback address ? If we could dispense * with using decnet_address here and for autobind, it will be one less thing * for users to worry about setting up. */
void dn_dev_up(struct net_device *dev) { struct dn_ifaddr *ifa; __le16 addr = decnet_address; int maybe_default = 0; struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr); if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK)) return; /* * Need to ensure that loopback device has a dn_db attached to it * to allow creation of neighbours against it, even though it might * not have a local address of its own. Might as well do the same for * all autoconfigured interfaces. */ if (dn_db == NULL) { int err; dn_db = dn_dev_create(dev, &err); if (dn_db == NULL) return; } if (dev->type == ARPHRD_ETHER) { if (memcmp(dev->dev_addr, dn_hiord, 4) != 0) return; addr = dn_eth2dn(dev->dev_addr); maybe_default = 1; } if (addr == 0) return; if ((ifa = dn_dev_alloc_ifa()) == NULL) return; ifa->ifa_local = ifa->ifa_address = addr; ifa->ifa_flags = 0; ifa->ifa_scope = RT_SCOPE_UNIVERSE; strcpy(ifa->ifa_label, dev->name); dn_dev_set_ifa(dev, ifa); /* * Automagically set the default device to the first automatically * configured ethernet card in the system. */ if (maybe_default) { dev_hold(dev); if (dn_dev_set_default(dev, 0)) dev_put(dev); } }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)10349.28%233.33%
Steven Whitehouse10349.28%350.00%
Eric Dumazet31.44%116.67%
Total209100.00%6100.00%


static void dn_dev_delete(struct net_device *dev) { struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr); if (dn_db == NULL) return; del_timer_sync(&dn_db->timer); dn_dev_sysctl_unregister(&dn_db->parms); dn_dev_check_default(dev); neigh_ifdown(&dn_neigh_table, dev); if (dn_db->parms.down) dn_db->parms.down(dev); dev->dn_ptr = NULL; neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms); neigh_ifdown(&dn_neigh_table, dev); if (dn_db->router) neigh_release(dn_db->router); if (dn_db->peer) neigh_release(dn_db->peer); kfree(dn_db); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)11587.79%350.00%
Herbert Xu86.11%116.67%
Steven Whitehouse53.82%116.67%
Eric Dumazet32.29%116.67%
Total131100.00%6100.00%


void dn_dev_down(struct net_device *dev) { struct dn_dev *dn_db = rtnl_dereference(dev->dn_ptr); struct dn_ifaddr *ifa; if (dn_db == NULL) return; while ((ifa = rtnl_dereference(dn_db->ifa_list)) != NULL) { dn_dev_del_ifa(dn_db, &dn_db->ifa_list, 0); dn_dev_free_ifa(ifa); } dn_dev_delete(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)6791.78%266.67%
Eric Dumazet68.22%133.33%
Total73100.00%3100.00%


void dn_dev_init_pkt(struct sk_buff *skb) { }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)888.89%150.00%
Joe Perches111.11%150.00%
Total9100.00%2100.00%


void dn_dev_veri_pkt(struct sk_buff *skb) { }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)888.89%150.00%
Joe Perches111.11%150.00%
Total9100.00%2100.00%


void dn_dev_hello(struct sk_buff *skb) { }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)888.89%150.00%
Joe Perches111.11%150.00%
Total9100.00%2100.00%


void dn_dev_devices_off(void) { struct net_device *dev; rtnl_lock(); for_each_netdev(&init_net, dev) dn_dev_down(dev); rtnl_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1758.62%233.33%
Steven Whitehouse517.24%116.67%
Pavel Emelyanov413.79%116.67%
Eric W. Biedermann26.90%116.67%
David S. Miller13.45%116.67%
Total29100.00%6100.00%


void dn_dev_devices_on(void) { struct net_device *dev; rtnl_lock(); for_each_netdev(&init_net, dev) { if (dev->flags & IFF_UP) dn_dev_up(dev); } rtnl_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)2769.23%233.33%
Steven Whitehouse512.82%116.67%
Pavel Emelyanov410.26%116.67%
Eric W. Biedermann25.13%116.67%
David S. Miller12.56%116.67%
Total39100.00%6100.00%


int register_dnaddr_notifier(struct notifier_block *nb) { return blocking_notifier_chain_register(&dnaddr_chain, nb); }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse1894.74%150.00%
Alan Stern15.26%150.00%
Total19100.00%2100.00%


int unregister_dnaddr_notifier(struct notifier_block *nb) { return blocking_notifier_chain_unregister(&dnaddr_chain, nb); }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse1894.74%150.00%
Alan Stern15.26%150.00%
Total19100.00%2100.00%

#ifdef CONFIG_PROC_FS
static inline int is_dn_dev(struct net_device *dev) { return dev->dn_ptr != NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse1052.63%133.33%
Linus Torvalds (pre-git)526.32%133.33%
Pavel Emelyanov421.05%133.33%
Total19100.00%3100.00%


static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos) __acquires (RCU) { int i; struct net_device *dev; rcu_read_lock(); if (*pos == 0) return SEQ_START_TOKEN; i = 1; for_each_netdev_rcu(&init_net, dev) { if (!is_dn_dev(dev)) continue; if (i++ == *pos) return dev; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse3748.68%116.67%
Pavel Emelyanov3039.47%116.67%
Stephen Hemminger45.26%116.67%
Hannes Eder22.63%116.67%
Eric W. Biedermann22.63%116.67%
Eric Dumazet11.32%116.67%
Total76100.00%6100.00%


static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) { struct net_device *dev; ++*pos; dev = v; if (v == SEQ_START_TOKEN) dev = net_device_entry(&init_net.dev_base_head); for_each_netdev_continue_rcu(&init_net, dev) { if (!is_dn_dev(dev)) continue; return dev; } return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse4359.72%116.67%
Pavel Emelyanov2129.17%116.67%
Eric W. Biedermann45.56%116.67%
Linus Torvalds (pre-git)22.78%116.67%
Stephen Hemminger11.39%116.67%
Joe Perches11.39%116.67%
Total72100.00%6100.00%


static void dn_dev_seq_stop(struct seq_file *seq, void *v) __releases (RCU) { rcu_read_unlock(); }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse1672.73%125.00%
Stephen Hemminger313.64%125.00%
Hannes Eder29.09%125.00%
Eric Dumazet14.55%125.00%
Total22100.00%4100.00%


static char *dn_type2asc(char type) { switch (type) { case DN_DEV_BCAST: return "B"; case DN_DEV_UCAST: return "U"; case DN_DEV_MPOINT: return "M"; } return "?"; }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse37100.00%1100.00%
Total37100.00%1100.00%


static int dn_dev_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) seq_puts(seq, "Name Flags T1 Timer1 T3 Timer3 BlkSize Pri State DevType Router Peer\n"); else { struct net_device *dev = v; char peer_buf[DN_ASCBUF_LEN]; char router_buf[DN_ASCBUF_LEN]; struct dn_dev *dn_db = rcu_dereference(dev->dn_ptr); seq_printf(seq, "%-8s %1s %04u %04u %04lu %04lu" " %04hu %03d %02x %-10s %-7s %-7s\n", dev->name ? dev->name : "???", dn_type2asc(dn_db->parms.mode), 0, 0, dn_db->t3, dn_db->parms.t3, mtu2blksize(dev), dn_db->parms.priority, dn_db->parms.state, dn_db->parms.name, dn_db->router ? dn_addr2asc(le16_to_cpu(*(__le16 *)dn_db->router->primary_key), router_buf) : "", dn_db->peer ? dn_addr2asc(le16_to_cpu(*(__le16 *)dn_db->peer->primary_key), peer_buf) : ""); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)10357.54%337.50%
Steven Whitehouse7039.11%225.00%
Eric Dumazet31.68%112.50%
Harvey Harrison21.12%112.50%
Joe Perches10.56%112.50%
Total179100.00%8100.00%

static const struct seq_operations dn_dev_seq_ops = { .start = dn_dev_seq_start, .next = dn_dev_seq_next, .stop = dn_dev_seq_stop, .show = dn_dev_seq_show, };
static int dn_dev_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &dn_dev_seq_ops); }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse2288.00%150.00%
Linus Torvalds (pre-git)312.00%150.00%
Total25100.00%2100.00%

static const struct file_operations dn_dev_seq_fops = { .owner = THIS_MODULE, .open = dn_dev_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; #endif /* CONFIG_PROC_FS */ static int addr[2]; module_param_array(addr, int, NULL, 0444); MODULE_PARM_DESC(addr, "The DECnet address of this machine: area,node");
void __init dn_dev_init(void) { if (addr[0] > 63 || addr[0] < 0) { printk(KERN_ERR "DECnet: Area must be between 0 and 63"); return; } if (addr[1] > 1023 || addr[1] < 0) { printk(KERN_ERR "DECnet: Node must be between 0 and 1023"); return; } decnet_address = cpu_to_le16((addr[0] << 10) | addr[1]); dn_dev_devices_on(); rtnl_register(PF_DECnet, RTM_NEWADDR, dn_nl_newaddr, NULL, NULL); rtnl_register(PF_DECnet, RTM_DELADDR, dn_nl_deladdr, NULL, NULL); rtnl_register(PF_DECnet, RTM_GETADDR, NULL, dn_nl_dump_ifaddr, NULL); proc_create("decnet_dev", S_IRUGO, init_net.proc_net, &dn_dev_seq_fops); #ifdef CONFIG_SYSCTL { int i; for(i = 0; i < DN_DEV_LIST_SIZE; i++) dn_dev_sysctl_register(NULL, &dn_dev_list[i]); } #endif /* CONFIG_SYSCTL */ }

Contributors

PersonTokensPropCommitsCommitProp
Steven Whitehouse6941.07%220.00%
Linus Torvalds (pre-git)4627.38%220.00%
Thomas Graf3118.45%110.00%
Rafael J. Wysocki84.76%110.00%
Greg Rose63.57%110.00%
Gao Feng52.98%110.00%
David S. Miller21.19%110.00%
Harvey Harrison10.60%110.00%
Total168100.00%10100.00%


void __exit dn_dev_cleanup(void) { #ifdef CONFIG_SYSCTL { int i; for(i = 0; i < DN_DEV_LIST_SIZE; i++) dn_dev_sysctl_unregister(&dn_dev_list[i]); } #endif /* CONFIG_SYSCTL */ remove_proc_entry("decnet_dev", init_net.proc_net); dn_dev_devices_off(); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)4177.36%360.00%
Rafael J. Wysocki713.21%120.00%
Gao Feng59.43%120.00%
Total53100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)385856.74%1010.31%
Steven Whitehouse150822.18%88.25%
Thomas Graf3274.81%66.19%
Hideaki Yoshifuji / 吉藤英明2864.21%33.09%
Eric Dumazet1472.16%44.12%
Eric W. Biedermann1382.03%1010.31%
Pavel Emelyanov1141.68%33.09%
Denis V. Lunev640.94%22.06%
Jiri Pirko520.76%22.06%
Rusty Russell470.69%22.06%
Linus Torvalds380.56%33.09%
Patrick McHardy290.43%44.12%
David S. Miller240.35%44.12%
Rafael J. Wysocki180.26%11.03%
Stephen Hemminger160.24%33.09%
Octavian Purdila150.22%11.03%
Al Viro110.16%22.06%
Harvey Harrison110.16%11.03%
Jamal Hadi Salim100.15%11.03%
Gao Feng100.15%22.06%
Arnaldo Carvalho de Melo100.15%22.06%
Herbert Xu80.12%11.03%
Joe Perches80.12%33.09%
Alan Stern80.12%11.03%
Himangi Saraogi80.12%11.03%
Greg Rose60.09%11.03%
Hannes Eder40.06%11.03%
Thomas Gleixner30.04%11.03%
Johannes Berg30.04%11.03%
Tejun Heo30.04%11.03%
Randy Dunlap30.04%11.03%
Panagiotis Issaris20.03%11.03%
Lai Jiangshan20.03%11.03%
Andries E. Brouwer10.01%11.03%
Arjan van de Ven10.01%11.03%
Roel Kluin10.01%11.03%
Kees Cook10.01%11.03%
Patrick Caulfield10.01%11.03%
Philippe De Muyter10.01%11.03%
Cheng Renquan10.01%11.03%
Uwe Kleine-König10.01%11.03%
Pablo Neira Ayuso10.01%11.03%
Total6800100.00%97100.00%
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