-
/*
* DECnet An implementation of the DECnet protocol suite for the LINUX
* operating system. DECnet is implemented using the BSD Socket
static unsigned char dn_hiord_addr[6] = {0xAA,0x00,0x04,0x00,0x00,0x00};
-int dn_rt_min_delay = 2 * HZ;
-int dn_rt_max_delay = 10 * HZ;
-int dn_rt_mtu_expires = 10 * 60 * HZ;
+static const int dn_rt_min_delay = 2 * HZ;
+static const int dn_rt_max_delay = 10 * HZ;
+static const int dn_rt_mtu_expires = 10 * 60 * HZ;
static unsigned long dn_rt_deadline;
static unsigned dn_rt_hash_mask;
static struct timer_list dn_route_timer;
-static struct timer_list dn_rt_flush_timer =
- TIMER_INITIALIZER(dn_run_flush, 0, 0);
+static DEFINE_TIMER(dn_rt_flush_timer, dn_run_flush, 0, 0);
int decnet_dst_gc_interval = 2;
static struct dst_ops dn_dst_ops = {
.entries = ATOMIC_INIT(0),
};
-static __inline__ unsigned dn_hash(unsigned short src, unsigned short dst)
+static __inline__ unsigned dn_hash(__le16 src, __le16 dst)
{
- unsigned short tmp = src ^ dst;
+ __u16 tmp = (__u16 __force)(src ^ dst);
tmp ^= (tmp >> 3);
tmp ^= (tmp >> 5);
tmp ^= (tmp >> 10);
static inline void dnrt_free(struct dn_route *rt)
{
- call_rcu(&rt->u.dst.rcu_head, (void (*)(void *))dst_free, &rt->u.dst);
+ call_rcu_bh(&rt->u.dst.rcu_head, dst_rcu_free);
}
static inline void dnrt_drop(struct dn_route *rt)
{
- if (rt)
- dst_release(&rt->u.dst);
- call_rcu(&rt->u.dst.rcu_head, (void (*)(void *))dst_free, &rt->u.dst);
+ dst_release(&rt->u.dst);
+ call_rcu_bh(&rt->u.dst.rcu_head, dst_rcu_free);
}
static void dn_dst_check_expire(unsigned long dummy)
*/
static struct dst_entry *dn_dst_check(struct dst_entry *dst, __u32 cookie)
{
- dst_release(dst);
return NULL;
}
if (compare_keys(&rth->fl, &rt->fl)) {
/* Put it first */
*rthp = rth->u.rt_next;
- smp_wmb();
- rth->u.rt_next = dn_rt_hash_table[hash].chain;
- smp_wmb();
- dn_rt_hash_table[hash].chain = rth;
+ rcu_assign_pointer(rth->u.rt_next,
+ dn_rt_hash_table[hash].chain);
+ rcu_assign_pointer(dn_rt_hash_table[hash].chain, rth);
rth->u.dst.__use++;
dst_hold(&rth->u.dst);
rthp = &rth->u.rt_next;
}
- smp_wmb();
- rt->u.rt_next = dn_rt_hash_table[hash].chain;
- smp_wmb();
- dn_rt_hash_table[hash].chain = rt;
+ rcu_assign_pointer(rt->u.rt_next, dn_rt_hash_table[hash].chain);
+ rcu_assign_pointer(dn_rt_hash_table[hash].chain, rt);
dst_hold(&rt->u.dst);
rt->u.dst.__use++;
}
}
-static spinlock_t dn_rt_flush_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(dn_rt_flush_lock);
void dn_rt_cache_flush(int delay)
{
{
struct dn_skb_cb *cb;
unsigned char *ptr;
- dn_address *src;
- dn_address *dst;
- dn_address tmp;
+ __le16 *src;
+ __le16 *dst;
+ __le16 tmp;
/* Add back headers */
skb_push(skb, skb->data - skb->nh.raw);
ptr = skb->data + 2;
*ptr++ = (cb->rt_flags & ~DN_RT_F_RQR) | DN_RT_F_RTS;
- dst = (dn_address *)ptr;
+ dst = (__le16 *)ptr;
ptr += 2;
- src = (dn_address *)ptr;
+ src = (__le16 *)ptr;
ptr += 2;
*ptr = 0; /* Zero hop count */
struct dn_skb_cb *cb = DN_SKB_CB(skb);
printk(KERN_DEBUG
"DECnet: dn_route_rx_packet: rt_flags=0x%02x dev=%s len=%d src=0x%04hx dst=0x%04hx err=%d type=%d\n",
- (int)cb->rt_flags, devname, skb->len, cb->src, cb->dst,
+ (int)cb->rt_flags, devname, skb->len,
+ dn_ntohs(cb->src), dn_ntohs(cb->dst),
err, skb->pkt_type);
}
/* Destination info */
ptr += 2;
- cb->dst = dn_htons(dn_eth2dn(ptr));
+ cb->dst = dn_eth2dn(ptr);
if (memcmp(ptr, dn_hiord_addr, 4) != 0)
goto drop_it;
ptr += 6;
/* Source info */
ptr += 2;
- cb->src = dn_htons(dn_eth2dn(ptr));
+ cb->src = dn_eth2dn(ptr);
if (memcmp(ptr, dn_hiord_addr, 4) != 0)
goto drop_it;
ptr += 6;
skb_pull(skb, 5);
skb->h.raw = skb->data;
- cb->dst = *(dn_address *)ptr;
+ cb->dst = *(__le16 *)ptr;
ptr += 2;
- cb->src = *(dn_address *)ptr;
+ cb->src = *(__le16 *)ptr;
ptr += 2;
cb->hops = *ptr & 0x3f;
return NET_RX_SUCCESS;
}
-int dn_route_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt)
+int dn_route_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)
{
struct dn_skb_cb *cb;
unsigned char flags = 0;
- __u16 len = dn_ntohs(*(__u16 *)skb->data);
+ __u16 len = dn_ntohs(*(__le16 *)skb->data);
struct dn_dev *dn = (struct dn_dev *)dev->dn_ptr;
unsigned char padlen = 0;
return NET_RX_DROP;
}
-static int dn_output(struct sk_buff **pskb)
+static int dn_output(struct sk_buff *skb)
{
- struct sk_buff *skb = *pskb;
struct dst_entry *dst = skb->dst;
struct dn_route *rt = (struct dn_route *)dst;
struct net_device *dev = dst->dev;
struct dn_skb_cb *cb = DN_SKB_CB(skb);
printk(KERN_DEBUG "dn_rt_bug: skb from:%04x to:%04x\n",
- cb->src, cb->dst);
+ dn_ntohs(cb->src), dn_ntohs(cb->dst));
}
kfree_skb(skb);
return NET_RX_BAD;
}
-static int dn_rt_bug_out(struct sk_buff **pskb)
-{
- return dn_rt_bug(*pskb);
-}
-
static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
{
struct dn_fib_info *fi = res->fi;
if (rt->u.dst.metrics[RTAX_MTU-1] == 0 ||
rt->u.dst.metrics[RTAX_MTU-1] > rt->u.dst.dev->mtu)
rt->u.dst.metrics[RTAX_MTU-1] = rt->u.dst.dev->mtu;
- mss = dn_mss_from_pmtu(dev, dst_pmtu(&rt->u.dst));
+ mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->u.dst));
if (rt->u.dst.metrics[RTAX_ADVMSS-1] == 0 ||
rt->u.dst.metrics[RTAX_ADVMSS-1] > mss)
rt->u.dst.metrics[RTAX_ADVMSS-1] = mss;
return 0;
}
-static inline int dn_match_addr(__u16 addr1, __u16 addr2)
+static inline int dn_match_addr(__le16 addr1, __le16 addr2)
{
__u16 tmp = dn_ntohs(addr1) ^ dn_ntohs(addr2);
int match = 16;
return match;
}
-static __u16 dnet_select_source(const struct net_device *dev, __u16 daddr, int scope)
+static __le16 dnet_select_source(const struct net_device *dev, __le16 daddr, int scope)
{
- __u16 saddr = 0;
+ __le16 saddr = 0;
struct dn_dev *dn_db = dev->dn_ptr;
struct dn_ifaddr *ifa;
int best_match = 0;
return saddr;
}
-static inline __u16 __dn_fib_res_prefsrc(struct dn_fib_res *res)
+static inline __le16 __dn_fib_res_prefsrc(struct dn_fib_res *res)
{
return dnet_select_source(DN_FIB_RES_DEV(*res), DN_FIB_RES_GW(*res), res->scope);
}
-static inline __u16 dn_fib_rules_map_destination(__u16 daddr, struct dn_fib_res *res)
+static inline __le16 dn_fib_rules_map_destination(__le16 daddr, struct dn_fib_res *res)
{
- __u16 mask = dnet_make_mask(res->prefixlen);
+ __le16 mask = dnet_make_mask(res->prefixlen);
return (daddr&~mask)|res->fi->fib_nh->nh_gw;
}
struct dn_fib_res res = { .fi = NULL, .type = RTN_UNICAST };
int err;
int free_res = 0;
- __u16 gateway = 0;
+ __le16 gateway = 0;
if (decnet_debug_level & 16)
printk(KERN_DEBUG
"dn_route_output_slow: dst=%04x src=%04x mark=%d"
- " iif=%d oif=%d\n", oldflp->fld_dst, oldflp->fld_src,
+ " iif=%d oif=%d\n", dn_ntohs(oldflp->fld_dst),
+ dn_ntohs(oldflp->fld_src),
oldflp->fld_fwmark, loopback_dev.ifindex, oldflp->oif);
/* If we have an output interface, verify its a DECnet device */
if (decnet_debug_level & 16)
printk(KERN_DEBUG
"dn_route_output_slow: initial checks complete."
- " dst=%o4x src=%04x oif=%d try_hard=%d\n", fl.fld_dst,
- fl.fld_src, fl.oif, try_hard);
+ " dst=%o4x src=%04x oif=%d try_hard=%d\n",
+ dn_ntohs(fl.fld_dst), dn_ntohs(fl.fld_src),
+ fl.oif, try_hard);
/*
* N.B. If the kernel is compiled without router support then
* here
*/
if (!try_hard) {
- neigh = dn_neigh_lookup(&dn_neigh_table, &fl.fld_dst);
+ neigh = neigh_lookup_nodev(&dn_neigh_table, &fl.fld_dst);
if (neigh) {
if ((oldflp->oif &&
(neigh->dev->ifindex != oldflp->oif)) ||
struct dn_route *rt = NULL;
if (!(flags & MSG_TRYHARD)) {
- rcu_read_lock();
- for(rt = dn_rt_hash_table[hash].chain; rt; rt = rt->u.rt_next) {
- read_barrier_depends();
+ rcu_read_lock_bh();
+ for(rt = rcu_dereference(dn_rt_hash_table[hash].chain); rt;
+ rt = rcu_dereference(rt->u.rt_next)) {
if ((flp->fld_dst == rt->fl.fld_dst) &&
(flp->fld_src == rt->fl.fld_src) &&
#ifdef CONFIG_DECNET_ROUTE_FWMARK
rt->u.dst.lastuse = jiffies;
dst_hold(&rt->u.dst);
rt->u.dst.__use++;
- rcu_read_unlock();
+ rcu_read_unlock_bh();
*pprt = &rt->u.dst;
return 0;
}
}
- rcu_read_unlock();
+ rcu_read_unlock_bh();
}
return dn_route_output_slow(pprt, flp, flags);
struct neighbour *neigh = NULL;
unsigned hash;
int flags = 0;
- __u16 gateway = 0;
- __u16 local_src = 0;
+ __le16 gateway = 0;
+ __le16 local_src = 0;
struct flowi fl = { .nl_u = { .dn_u =
{ .daddr = cb->dst,
.saddr = cb->src,
res.type = RTN_LOCAL;
flags |= RTCF_DIRECTSRC;
} else {
- __u16 src_map = fl.fld_src;
+ __le16 src_map = fl.fld_src;
free_res = 1;
out_dev = DN_FIB_RES_DEV(res);
rt->u.dst.neighbour = neigh;
rt->u.dst.dev = out_dev;
rt->u.dst.lastuse = jiffies;
- rt->u.dst.output = dn_rt_bug_out;
+ rt->u.dst.output = dn_rt_bug;
switch(res.type) {
case RTN_UNICAST:
rt->u.dst.input = dn_forward;
return 0;
rcu_read_lock();
- for(rt = dn_rt_hash_table[hash].chain; rt != NULL; rt = rt->u.rt_next) {
- read_barrier_depends();
+ for(rt = rcu_dereference(dn_rt_hash_table[hash].chain); rt != NULL;
+ rt = rcu_dereference(rt->u.rt_next)) {
if ((rt->fl.fld_src == cb->src) &&
(rt->fl.fld_dst == cb->dst) &&
(rt->fl.oif == 0) &&
return dn_route_input_slow(skb);
}
-static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq, int event, int nowait)
+static int dn_rt_fill_info(struct sk_buff *skb, u32 pid, u32 seq,
+ int event, int nowait, unsigned int flags)
{
struct dn_route *rt = (struct dn_route *)skb->dst;
struct rtmsg *r;
unsigned char *b = skb->tail;
struct rta_cacheinfo ci;
- nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*r));
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
r = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = (nowait && pid) ? NLM_F_MULTI : 0;
r->rtm_family = AF_DECnet;
r->rtm_dst_len = 16;
r->rtm_src_len = 0;
NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
- err = dn_rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, RTM_NEWROUTE, 0);
+ err = dn_rt_fill_info(skb, NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, RTM_NEWROUTE, 0, 0);
if (err == 0)
goto out_free;
continue;
if (h > s_h)
s_idx = 0;
- rcu_read_lock();
- for(rt = dn_rt_hash_table[h].chain, idx = 0; rt; rt = rt->u.rt_next, idx++) {
- read_barrier_depends();
+ rcu_read_lock_bh();
+ for(rt = rcu_dereference(dn_rt_hash_table[h].chain), idx = 0;
+ rt;
+ rt = rcu_dereference(rt->u.rt_next), idx++) {
if (idx < s_idx)
continue;
skb->dst = dst_clone(&rt->u.dst);
if (dn_rt_fill_info(skb, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, RTM_NEWROUTE, 1) <= 0) {
+ cb->nlh->nlmsg_seq, RTM_NEWROUTE,
+ 1, NLM_F_MULTI) <= 0) {
dst_release(xchg(&skb->dst, NULL));
- rcu_read_unlock();
+ rcu_read_unlock_bh();
goto done;
}
dst_release(xchg(&skb->dst, NULL));
}
- rcu_read_unlock();
+ rcu_read_unlock_bh();
}
done:
struct dn_rt_cache_iter_state *s = seq->private;
for(s->bucket = dn_rt_hash_mask; s->bucket >= 0; --s->bucket) {
- rcu_read_lock();
+ rcu_read_lock_bh();
rt = dn_rt_hash_table[s->bucket].chain;
if (rt)
break;
- rcu_read_unlock();
+ rcu_read_unlock_bh();
}
return rt;
}
static struct dn_route *dn_rt_cache_get_next(struct seq_file *seq, struct dn_route *rt)
{
- struct dn_rt_cache_iter_state *s = seq->private;
+ struct dn_rt_cache_iter_state *s = rcu_dereference(seq->private);
- smp_read_barrier_depends();
rt = rt->u.rt_next;
while(!rt) {
- rcu_read_unlock();
+ rcu_read_unlock_bh();
if (--s->bucket < 0)
break;
- rcu_read_lock();
+ rcu_read_lock_bh();
rt = dn_rt_hash_table[s->bucket].chain;
}
return rt;
static void dn_rt_cache_seq_stop(struct seq_file *seq, void *v)
{
if (v)
- rcu_read_unlock();
+ rcu_read_unlock_bh();
}
static int dn_rt_cache_seq_show(struct seq_file *seq, void *v)
dn_rt_hash_mask--;
for(i = 0; i <= dn_rt_hash_mask; i++) {
- dn_rt_hash_table[i].lock = SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&dn_rt_hash_table[i].lock);
dn_rt_hash_table[i].chain = NULL;
}
git://git.onelab.eu / linux-2.6.git / blobdiff