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Diffstat (limited to 'net/decnet/dn_table.c')
-rw-r--r--net/decnet/dn_table.c242
1 files changed, 120 insertions, 122 deletions
diff --git a/net/decnet/dn_table.c b/net/decnet/dn_table.c
index c1f0cc1b1c6..780a141f834 100644
--- a/net/decnet/dn_table.c
+++ b/net/decnet/dn_table.c
@@ -60,7 +60,7 @@ struct dn_hash
#define dz_prefix(key,dz) ((key).datum)
#define for_nexthops(fi) { int nhsel; const struct dn_fib_nh *nh;\
- for(nhsel = 0, nh = (fi)->fib_nh; nhsel < (fi)->fib_nhs; nh++, nhsel++)
+ for(nhsel = 0, nh = (fi)->fib_nh; nhsel < (fi)->fib_nhs; nh++, nhsel++)
#define endfor_nexthops(fi) }
@@ -290,82 +290,82 @@ static inline size_t dn_fib_nlmsg_size(struct dn_fib_info *fi)
}
static int dn_fib_dump_info(struct sk_buff *skb, u32 pid, u32 seq, int event,
- u32 tb_id, u8 type, u8 scope, void *dst, int dst_len,
- struct dn_fib_info *fi, unsigned int flags)
+ u32 tb_id, u8 type, u8 scope, void *dst, int dst_len,
+ struct dn_fib_info *fi, unsigned int flags)
{
- struct rtmsg *rtm;
- struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
-
- nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*rtm), flags);
- rtm = NLMSG_DATA(nlh);
- rtm->rtm_family = AF_DECnet;
- rtm->rtm_dst_len = dst_len;
- rtm->rtm_src_len = 0;
- rtm->rtm_tos = 0;
- rtm->rtm_table = tb_id;
+ struct rtmsg *rtm;
+ struct nlmsghdr *nlh;
+ unsigned char *b = skb->tail;
+
+ nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*rtm), flags);
+ rtm = NLMSG_DATA(nlh);
+ rtm->rtm_family = AF_DECnet;
+ rtm->rtm_dst_len = dst_len;
+ rtm->rtm_src_len = 0;
+ rtm->rtm_tos = 0;
+ rtm->rtm_table = tb_id;
RTA_PUT_U32(skb, RTA_TABLE, tb_id);
- rtm->rtm_flags = fi->fib_flags;
- rtm->rtm_scope = scope;
+ rtm->rtm_flags = fi->fib_flags;
+ rtm->rtm_scope = scope;
rtm->rtm_type = type;
- if (rtm->rtm_dst_len)
- RTA_PUT(skb, RTA_DST, 2, dst);
- rtm->rtm_protocol = fi->fib_protocol;
- if (fi->fib_priority)
- RTA_PUT(skb, RTA_PRIORITY, 4, &fi->fib_priority);
+ if (rtm->rtm_dst_len)
+ RTA_PUT(skb, RTA_DST, 2, dst);
+ rtm->rtm_protocol = fi->fib_protocol;
+ if (fi->fib_priority)
+ RTA_PUT(skb, RTA_PRIORITY, 4, &fi->fib_priority);
if (rtnetlink_put_metrics(skb, fi->fib_metrics) < 0)
goto rtattr_failure;
- if (fi->fib_nhs == 1) {
- if (fi->fib_nh->nh_gw)
- RTA_PUT(skb, RTA_GATEWAY, 2, &fi->fib_nh->nh_gw);
- if (fi->fib_nh->nh_oif)
- RTA_PUT(skb, RTA_OIF, sizeof(int), &fi->fib_nh->nh_oif);
- }
- if (fi->fib_nhs > 1) {
- struct rtnexthop *nhp;
- struct rtattr *mp_head;
- if (skb_tailroom(skb) <= RTA_SPACE(0))
- goto rtattr_failure;
- mp_head = (struct rtattr *)skb_put(skb, RTA_SPACE(0));
-
- for_nexthops(fi) {
- if (skb_tailroom(skb) < RTA_ALIGN(RTA_ALIGN(sizeof(*nhp)) + 4))
- goto rtattr_failure;
- nhp = (struct rtnexthop *)skb_put(skb, RTA_ALIGN(sizeof(*nhp)));
- nhp->rtnh_flags = nh->nh_flags & 0xFF;
- nhp->rtnh_hops = nh->nh_weight - 1;
- nhp->rtnh_ifindex = nh->nh_oif;
- if (nh->nh_gw)
- RTA_PUT(skb, RTA_GATEWAY, 2, &nh->nh_gw);
- nhp->rtnh_len = skb->tail - (unsigned char *)nhp;
- } endfor_nexthops(fi);
- mp_head->rta_type = RTA_MULTIPATH;
- mp_head->rta_len = skb->tail - (u8*)mp_head;
- }
-
- nlh->nlmsg_len = skb->tail - b;
- return skb->len;
+ if (fi->fib_nhs == 1) {
+ if (fi->fib_nh->nh_gw)
+ RTA_PUT(skb, RTA_GATEWAY, 2, &fi->fib_nh->nh_gw);
+ if (fi->fib_nh->nh_oif)
+ RTA_PUT(skb, RTA_OIF, sizeof(int), &fi->fib_nh->nh_oif);
+ }
+ if (fi->fib_nhs > 1) {
+ struct rtnexthop *nhp;
+ struct rtattr *mp_head;
+ if (skb_tailroom(skb) <= RTA_SPACE(0))
+ goto rtattr_failure;
+ mp_head = (struct rtattr *)skb_put(skb, RTA_SPACE(0));
+
+ for_nexthops(fi) {
+ if (skb_tailroom(skb) < RTA_ALIGN(RTA_ALIGN(sizeof(*nhp)) + 4))
+ goto rtattr_failure;
+ nhp = (struct rtnexthop *)skb_put(skb, RTA_ALIGN(sizeof(*nhp)));
+ nhp->rtnh_flags = nh->nh_flags & 0xFF;
+ nhp->rtnh_hops = nh->nh_weight - 1;
+ nhp->rtnh_ifindex = nh->nh_oif;
+ if (nh->nh_gw)
+ RTA_PUT(skb, RTA_GATEWAY, 2, &nh->nh_gw);
+ nhp->rtnh_len = skb->tail - (unsigned char *)nhp;
+ } endfor_nexthops(fi);
+ mp_head->rta_type = RTA_MULTIPATH;
+ mp_head->rta_len = skb->tail - (u8*)mp_head;
+ }
+
+ nlh->nlmsg_len = skb->tail - b;
+ return skb->len;
nlmsg_failure:
rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -EMSGSIZE;
+ skb_trim(skb, b - skb->data);
+ return -EMSGSIZE;
}
static void dn_rtmsg_fib(int event, struct dn_fib_node *f, int z, u32 tb_id,
- struct nlmsghdr *nlh, struct netlink_skb_parms *req)
+ struct nlmsghdr *nlh, struct netlink_skb_parms *req)
{
- struct sk_buff *skb;
- u32 pid = req ? req->pid : 0;
+ struct sk_buff *skb;
+ u32 pid = req ? req->pid : 0;
int err = -ENOBUFS;
- skb = nlmsg_new(dn_fib_nlmsg_size(DN_FIB_INFO(f)), GFP_KERNEL);
- if (skb == NULL)
+ skb = nlmsg_new(dn_fib_nlmsg_size(DN_FIB_INFO(f)), GFP_KERNEL);
+ if (skb == NULL)
goto errout;
- err = dn_fib_dump_info(skb, pid, nlh->nlmsg_seq, event, tb_id,
+ err = dn_fib_dump_info(skb, pid, nlh->nlmsg_seq, event, tb_id,
f->fn_type, f->fn_scope, &f->fn_key, z,
DN_FIB_INFO(f), 0);
if (err < 0) {
@@ -380,7 +380,7 @@ errout:
rtnl_set_sk_err(RTNLGRP_DECnet_ROUTE, err);
}
-static __inline__ int dn_hash_dump_bucket(struct sk_buff *skb,
+static __inline__ int dn_hash_dump_bucket(struct sk_buff *skb,
struct netlink_callback *cb,
struct dn_fib_table *tb,
struct dn_zone *dz,
@@ -394,12 +394,12 @@ static __inline__ int dn_hash_dump_bucket(struct sk_buff *skb,
continue;
if (f->fn_state & DN_S_ZOMBIE)
continue;
- if (dn_fib_dump_info(skb, NETLINK_CB(cb->skb).pid,
+ if (dn_fib_dump_info(skb, NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq,
RTM_NEWROUTE,
- tb->n,
+ tb->n,
(f->fn_state & DN_S_ZOMBIE) ? 0 : f->fn_type,
- f->fn_scope, &f->fn_key, dz->dz_order,
+ f->fn_scope, &f->fn_key, dz->dz_order,
f->fn_info, NLM_F_MULTI) < 0) {
cb->args[4] = i;
return -1;
@@ -409,7 +409,7 @@ static __inline__ int dn_hash_dump_bucket(struct sk_buff *skb,
return skb->len;
}
-static __inline__ int dn_hash_dump_zone(struct sk_buff *skb,
+static __inline__ int dn_hash_dump_zone(struct sk_buff *skb,
struct netlink_callback *cb,
struct dn_fib_table *tb,
struct dn_zone *dz)
@@ -433,10 +433,10 @@ static __inline__ int dn_hash_dump_zone(struct sk_buff *skb,
return skb->len;
}
-static int dn_fib_table_dump(struct dn_fib_table *tb, struct sk_buff *skb,
- struct netlink_callback *cb)
+static int dn_fib_table_dump(struct dn_fib_table *tb, struct sk_buff *skb,
+ struct netlink_callback *cb)
{
- int m, s_m;
+ int m, s_m;
struct dn_zone *dz;
struct dn_hash *table = (struct dn_hash *)tb->data;
@@ -457,7 +457,7 @@ static int dn_fib_table_dump(struct dn_fib_table *tb, struct sk_buff *skb,
read_unlock(&dn_fib_tables_lock);
cb->args[2] = m;
- return skb->len;
+ return skb->len;
}
int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb)
@@ -482,7 +482,7 @@ int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb)
goto next;
if (dumped)
memset(&cb->args[2], 0, sizeof(cb->args) -
- 2 * sizeof(cb->args[0]));
+ 2 * sizeof(cb->args[0]));
if (tb->dump(tb, skb, cb) < 0)
goto out;
dumped = 1;
@@ -503,13 +503,13 @@ static int dn_fib_table_insert(struct dn_fib_table *tb, struct rtmsg *r, struct
struct dn_fib_node *new_f, *f, **fp, **del_fp;
struct dn_zone *dz;
struct dn_fib_info *fi;
- int z = r->rtm_dst_len;
+ int z = r->rtm_dst_len;
int type = r->rtm_type;
dn_fib_key_t key;
- int err;
+ int err;
- if (z > 16)
- return -EINVAL;
+ if (z > 16)
+ return -EINVAL;
dz = table->dh_zones[z];
if (!dz && !(dz = dn_new_zone(table, z)))
@@ -524,8 +524,8 @@ static int dn_fib_table_insert(struct dn_fib_table *tb, struct rtmsg *r, struct
key = dz_key(dst, dz);
}
- if ((fi = dn_fib_create_info(r, rta, n, &err)) == NULL)
- return err;
+ if ((fi = dn_fib_create_info(r, rta, n, &err)) == NULL)
+ return err;
if (dz->dz_nent > (dz->dz_divisor << 2) &&
dz->dz_divisor > DN_MAX_DIVISOR &&
@@ -593,12 +593,10 @@ create:
replace:
err = -ENOBUFS;
- new_f = kmem_cache_alloc(dn_hash_kmem, GFP_KERNEL);
+ new_f = kmem_cache_zalloc(dn_hash_kmem, GFP_KERNEL);
if (new_f == NULL)
goto out;
- memset(new_f, 0, sizeof(struct dn_fib_node));
-
new_f->fn_key = key;
new_f->fn_type = type;
new_f->fn_scope = r->rtm_scope;
@@ -626,9 +624,9 @@ replace:
dn_rt_cache_flush(-1);
}
- dn_rtmsg_fib(RTM_NEWROUTE, new_f, z, tb->n, n, req);
+ dn_rtmsg_fib(RTM_NEWROUTE, new_f, z, tb->n, n, req);
- return 0;
+ return 0;
out:
dn_fib_release_info(fi);
return err;
@@ -639,14 +637,14 @@ static int dn_fib_table_delete(struct dn_fib_table *tb, struct rtmsg *r, struct
{
struct dn_hash *table = (struct dn_hash*)tb->data;
struct dn_fib_node **fp, **del_fp, *f;
- int z = r->rtm_dst_len;
+ int z = r->rtm_dst_len;
struct dn_zone *dz;
dn_fib_key_t key;
int matched;
- if (z > 16)
- return -EINVAL;
+ if (z > 16)
+ return -EINVAL;
if ((dz = table->dh_zones[z]) == NULL)
return -ESRCH;
@@ -682,7 +680,7 @@ static int dn_fib_table_delete(struct dn_fib_table *tb, struct rtmsg *r, struct
if (del_fp == NULL &&
(!r->rtm_type || f->fn_type == r->rtm_type) &&
(r->rtm_scope == RT_SCOPE_NOWHERE || f->fn_scope == r->rtm_scope) &&
- (!r->rtm_protocol ||
+ (!r->rtm_protocol ||
fi->fib_protocol == r->rtm_protocol) &&
dn_fib_nh_match(r, n, rta, fi) == 0)
del_fp = fp;
@@ -690,7 +688,7 @@ static int dn_fib_table_delete(struct dn_fib_table *tb, struct rtmsg *r, struct
if (del_fp) {
f = *del_fp;
- dn_rtmsg_fib(RTM_DELROUTE, f, z, tb->n, n, req);
+ dn_rtmsg_fib(RTM_DELROUTE, f, z, tb->n, n, req);
if (matched != 1) {
write_lock_bh(&dn_fib_tables_lock);
@@ -714,7 +712,7 @@ static int dn_fib_table_delete(struct dn_fib_table *tb, struct rtmsg *r, struct
return 0;
}
- return -ESRCH;
+ return -ESRCH;
}
static inline int dn_flush_list(struct dn_fib_node **fp, int z, struct dn_hash *table)
@@ -761,7 +759,7 @@ static int dn_fib_table_flush(struct dn_fib_table *tb)
static int dn_fib_table_lookup(struct dn_fib_table *tb, const struct flowi *flp, struct dn_fib_res *res)
{
- int err;
+ int err;
struct dn_zone *dz;
struct dn_hash *t = (struct dn_hash *)tb->data;
@@ -790,7 +788,7 @@ static int dn_fib_table_lookup(struct dn_fib_table *tb, const struct flowi *flp,
if (err == 0) {
res->type = f->fn_type;
- res->scope = f->fn_scope;
+ res->scope = f->fn_scope;
res->prefixlen = dz->dz_order;
goto out;
}
@@ -801,21 +799,21 @@ static int dn_fib_table_lookup(struct dn_fib_table *tb, const struct flowi *flp,
err = 1;
out:
read_unlock(&dn_fib_tables_lock);
- return err;
+ return err;
}
struct dn_fib_table *dn_fib_get_table(u32 n, int create)
{
- struct dn_fib_table *t;
+ struct dn_fib_table *t;
struct hlist_node *node;
unsigned int h;
- if (n < RT_TABLE_MIN)
- return NULL;
+ if (n < RT_TABLE_MIN)
+ return NULL;
- if (n > RT_TABLE_MAX)
- return NULL;
+ if (n > RT_TABLE_MAX)
+ return NULL;
h = n & (DN_FIB_TABLE_HASHSZ - 1);
rcu_read_lock();
@@ -827,54 +825,54 @@ struct dn_fib_table *dn_fib_get_table(u32 n, int create)
}
rcu_read_unlock();
- if (!create)
- return NULL;
+ if (!create)
+ return NULL;
- if (in_interrupt() && net_ratelimit()) {
- printk(KERN_DEBUG "DECnet: BUG! Attempt to create routing table from interrupt\n");
- return NULL;
- }
+ if (in_interrupt() && net_ratelimit()) {
+ printk(KERN_DEBUG "DECnet: BUG! Attempt to create routing table from interrupt\n");
+ return NULL;
+ }
- t = kzalloc(sizeof(struct dn_fib_table) + sizeof(struct dn_hash),
+ t = kzalloc(sizeof(struct dn_fib_table) + sizeof(struct dn_hash),
GFP_KERNEL);
- if (t == NULL)
- return NULL;
-
- t->n = n;
- t->insert = dn_fib_table_insert;
- t->delete = dn_fib_table_delete;
- t->lookup = dn_fib_table_lookup;
- t->flush = dn_fib_table_flush;
- t->dump = dn_fib_table_dump;
+ if (t == NULL)
+ return NULL;
+
+ t->n = n;
+ t->insert = dn_fib_table_insert;
+ t->delete = dn_fib_table_delete;
+ t->lookup = dn_fib_table_lookup;
+ t->flush = dn_fib_table_flush;
+ t->dump = dn_fib_table_dump;
hlist_add_head_rcu(&t->hlist, &dn_fib_table_hash[h]);
- return t;
+ return t;
}
struct dn_fib_table *dn_fib_empty_table(void)
{
- u32 id;
+ u32 id;
- for(id = RT_TABLE_MIN; id <= RT_TABLE_MAX; id++)
+ for(id = RT_TABLE_MIN; id <= RT_TABLE_MAX; id++)
if (dn_fib_get_table(id, 0) == NULL)
- return dn_fib_get_table(id, 1);
- return NULL;
+ return dn_fib_get_table(id, 1);
+ return NULL;
}
void dn_fib_flush(void)
{
- int flushed = 0;
- struct dn_fib_table *tb;
+ int flushed = 0;
+ struct dn_fib_table *tb;
struct hlist_node *node;
unsigned int h;
for (h = 0; h < DN_FIB_TABLE_HASHSZ; h++) {
hlist_for_each_entry(tb, node, &dn_fib_table_hash[h], hlist)
- flushed += tb->flush(tb);
- }
+ flushed += tb->flush(tb);
+ }
- if (flushed)
- dn_rt_cache_flush(-1);
+ if (flushed)
+ dn_rt_cache_flush(-1);
}
void __init dn_fib_table_init(void)
@@ -894,7 +892,7 @@ void __exit dn_fib_table_cleanup(void)
write_lock(&dn_fib_tables_lock);
for (h = 0; h < DN_FIB_TABLE_HASHSZ; h++) {
hlist_for_each_entry_safe(t, node, next, &dn_fib_table_hash[h],
- hlist) {
+ hlist) {
hlist_del(&t->hlist);
kfree(t);
}