/******************************************************************************
(c) 1995-1998 E.M. Serrat emserrat@geocities.com
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
#include <linux/inet.h>
#include <linux/route.h>
#include <linux/in_route.h>
+#include <linux/slab.h>
#include <net/sock.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/rcupdate.h>
#include <linux/times.h>
#include <asm/errno.h>
+#include <net/net_namespace.h>
+#include <net/netlink.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/flow.h>
{
struct dn_route *chain;
spinlock_t lock;
-} __attribute__((__aligned__(8)));
+};
extern struct neigh_table dn_neigh_table;
static unsigned long dn_rt_deadline;
-static int dn_dst_gc(void);
+static int dn_dst_gc(struct dst_ops *ops);
static struct dst_entry *dn_dst_check(struct dst_entry *, __u32);
static struct dst_entry *dn_dst_negative_advice(struct dst_entry *);
static void dn_dst_link_failure(struct sk_buff *);
static struct dst_ops dn_dst_ops = {
.family = PF_DECnet,
- .protocol = __constant_htons(ETH_P_DNA_RT),
+ .protocol = cpu_to_be16(ETH_P_DNA_RT),
.gc_thresh = 128,
.gc = dn_dst_gc,
.check = dn_dst_check,
.negative_advice = dn_dst_negative_advice,
.link_failure = dn_dst_link_failure,
.update_pmtu = dn_dst_update_pmtu,
- .entry_size = sizeof(struct dn_route),
.entries = ATOMIC_INIT(0),
};
while((rt=*rtp) != NULL) {
if (atomic_read(&rt->u.dst.__refcnt) ||
(now - rt->u.dst.lastuse) < expire) {
- rtp = &rt->u.rt_next;
+ rtp = &rt->u.dst.dn_next;
continue;
}
- *rtp = rt->u.rt_next;
- rt->u.rt_next = NULL;
+ *rtp = rt->u.dst.dn_next;
+ rt->u.dst.dn_next = NULL;
dnrt_free(rt);
}
spin_unlock(&dn_rt_hash_table[i].lock);
mod_timer(&dn_route_timer, now + decnet_dst_gc_interval * HZ);
}
-static int dn_dst_gc(void)
+static int dn_dst_gc(struct dst_ops *ops)
{
struct dn_route *rt, **rtp;
int i;
while((rt=*rtp) != NULL) {
if (atomic_read(&rt->u.dst.__refcnt) ||
(now - rt->u.dst.lastuse) < expire) {
- rtp = &rt->u.rt_next;
+ rtp = &rt->u.dst.dn_next;
continue;
}
- *rtp = rt->u.rt_next;
- rt->u.rt_next = NULL;
+ *rtp = rt->u.dst.dn_next;
+ rt->u.dst.dn_next = NULL;
dnrt_drop(rt);
break;
}
else
min_mtu -= 21;
- if (dst->metrics[RTAX_MTU-1] > mtu && mtu >= min_mtu) {
+ if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= min_mtu) {
if (!(dst_metric_locked(dst, RTAX_MTU))) {
dst->metrics[RTAX_MTU-1] = mtu;
dst_set_expires(dst, dn_rt_mtu_expires);
}
if (!(dst_metric_locked(dst, RTAX_ADVMSS))) {
u32 mss = mtu - DN_MAX_NSP_DATA_HEADER;
- if (dst->metrics[RTAX_ADVMSS-1] > mss)
+ if (dst_metric(dst, RTAX_ADVMSS) > mss)
dst->metrics[RTAX_ADVMSS-1] = mss;
}
}
}
-/*
+/*
* When a route has been marked obsolete. (e.g. routing cache flush)
*/
static struct dst_entry *dn_dst_check(struct dst_entry *dst, __u32 cookie)
static void dn_dst_link_failure(struct sk_buff *skb)
{
- return;
}
static inline int compare_keys(struct flowi *fl1, struct flowi *fl2)
{
- return memcmp(&fl1->nl_u.dn_u, &fl2->nl_u.dn_u, sizeof(fl1->nl_u.dn_u)) == 0 &&
- fl1->oif == fl2->oif &&
- fl1->iif == fl2->iif;
+ return ((fl1->nl_u.dn_u.daddr ^ fl2->nl_u.dn_u.daddr) |
+ (fl1->nl_u.dn_u.saddr ^ fl2->nl_u.dn_u.saddr) |
+ (fl1->mark ^ fl2->mark) |
+ (fl1->nl_u.dn_u.scope ^ fl2->nl_u.dn_u.scope) |
+ (fl1->oif ^ fl2->oif) |
+ (fl1->iif ^ fl2->iif)) == 0;
}
static int dn_insert_route(struct dn_route *rt, unsigned hash, struct dn_route **rp)
while((rth = *rthp) != NULL) {
if (compare_keys(&rth->fl, &rt->fl)) {
/* Put it first */
- *rthp = rth->u.rt_next;
- rcu_assign_pointer(rth->u.rt_next,
+ *rthp = rth->u.dst.dn_next;
+ rcu_assign_pointer(rth->u.dst.dn_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);
- rth->u.dst.lastuse = now;
+ dst_use(&rth->u.dst, now);
spin_unlock_bh(&dn_rt_hash_table[hash].lock);
dnrt_drop(rt);
*rp = rth;
return 0;
}
- rthp = &rth->u.rt_next;
+ rthp = &rth->u.dst.dn_next;
}
- rcu_assign_pointer(rt->u.rt_next, dn_rt_hash_table[hash].chain);
+ rcu_assign_pointer(rt->u.dst.dn_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++;
- rt->u.dst.lastuse = now;
+
+ dst_use(&rt->u.dst, now);
spin_unlock_bh(&dn_rt_hash_table[hash].lock);
*rp = rt;
return 0;
}
-void dn_run_flush(unsigned long dummy)
+static void dn_run_flush(unsigned long dummy)
{
int i;
struct dn_route *rt, *next;
goto nothing_to_declare;
for(; rt; rt=next) {
- next = rt->u.rt_next;
- rt->u.rt_next = NULL;
+ next = rt->u.dst.dn_next;
+ rt->u.dst.dn_next = NULL;
dst_free((struct dst_entry *)rt);
}
unsigned char *ptr;
__le16 *src;
__le16 *dst;
- __le16 tmp;
/* Add back headers */
- skb_push(skb, skb->data - skb->nh.raw);
+ skb_push(skb, skb->data - skb_network_header(skb));
if ((skb = skb_unshare(skb, GFP_ATOMIC)) == NULL)
return NET_RX_DROP;
ptr += 2;
*ptr = 0; /* Zero hop count */
- /* Swap source and destination */
- tmp = *src;
- *src = *dst;
- *dst = tmp;
+ swap(*src, *dst);
skb->pkt_type = PACKET_OUTGOING;
dn_rt_finish_output(skb, NULL, NULL);
unsigned char tmp[ETH_ALEN];
/* Add back all headers */
- skb_push(skb, skb->data - skb->nh.raw);
+ skb_push(skb, skb->data - skb_network_header(skb));
if ((skb = skb_unshare(skb, GFP_ATOMIC)) == NULL)
return NET_RX_DROP;
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,
- dn_ntohs(cb->src), dn_ntohs(cb->dst),
+ le16_to_cpu(cb->src), le16_to_cpu(cb->dst),
err, skb->pkt_type);
}
goto drop_it;
skb_pull(skb, 20);
- skb->h.raw = skb->data;
+ skb_reset_transport_header(skb);
- /* Destination info */
- ptr += 2;
+ /* Destination info */
+ ptr += 2;
cb->dst = dn_eth2dn(ptr);
- if (memcmp(ptr, dn_hiord_addr, 4) != 0)
- goto drop_it;
- ptr += 6;
+ if (memcmp(ptr, dn_hiord_addr, 4) != 0)
+ goto drop_it;
+ ptr += 6;
- /* Source info */
- ptr += 2;
+ /* Source info */
+ ptr += 2;
cb->src = dn_eth2dn(ptr);
- if (memcmp(ptr, dn_hiord_addr, 4) != 0)
- goto drop_it;
- ptr += 6;
- /* Other junk */
- ptr++;
- cb->hops = *ptr++; /* Visit Count */
+ if (memcmp(ptr, dn_hiord_addr, 4) != 0)
+ goto drop_it;
+ ptr += 6;
+ /* Other junk */
+ ptr++;
+ cb->hops = *ptr++; /* Visit Count */
- return NF_HOOK(PF_DECnet, NF_DN_PRE_ROUTING, skb, skb->dev, NULL, dn_route_rx_packet);
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_PRE_ROUTING, skb, skb->dev, NULL,
+ dn_route_rx_packet);
drop_it:
kfree_skb(skb);
goto drop_it;
skb_pull(skb, 5);
- skb->h.raw = skb->data;
+ skb_reset_transport_header(skb);
cb->dst = *(__le16 *)ptr;
- ptr += 2;
- cb->src = *(__le16 *)ptr;
- ptr += 2;
- cb->hops = *ptr & 0x3f;
+ ptr += 2;
+ cb->src = *(__le16 *)ptr;
+ ptr += 2;
+ cb->hops = *ptr & 0x3f;
- return NF_HOOK(PF_DECnet, NF_DN_PRE_ROUTING, skb, skb->dev, NULL, dn_route_rx_packet);
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_PRE_ROUTING, skb, skb->dev, NULL,
+ dn_route_rx_packet);
drop_it:
- kfree_skb(skb);
- return NET_RX_DROP;
+ kfree_skb(skb);
+ return NET_RX_DROP;
}
static int dn_route_discard(struct sk_buff *skb)
{
struct dn_skb_cb *cb;
unsigned char flags = 0;
- __u16 len = dn_ntohs(*(__le16 *)skb->data);
+ __u16 len = le16_to_cpu(*(__le16 *)skb->data);
struct dn_dev *dn = (struct dn_dev *)dev->dn_ptr;
unsigned char padlen = 0;
+ if (!net_eq(dev_net(dev), &init_net))
+ goto dump_it;
+
if (dn == NULL)
goto dump_it;
flags = *skb->data;
}
- skb->nh.raw = skb->data;
+ skb_reset_network_header(skb);
/*
* Weed out future version DECnet
cb->rt_flags = flags;
if (decnet_debug_level & 1)
- printk(KERN_DEBUG
+ printk(KERN_DEBUG
"dn_route_rcv: got 0x%02x from %s [%d %d %d]\n",
- (int)flags, (dev) ? dev->name : "???", len, skb->len,
+ (int)flags, (dev) ? dev->name : "???", len, skb->len,
padlen);
- if (flags & DN_RT_PKT_CNTL) {
+ if (flags & DN_RT_PKT_CNTL) {
if (unlikely(skb_linearize(skb)))
goto dump_it;
- switch(flags & DN_RT_CNTL_MSK) {
- case DN_RT_PKT_INIT:
+ switch(flags & DN_RT_CNTL_MSK) {
+ case DN_RT_PKT_INIT:
dn_dev_init_pkt(skb);
break;
- case DN_RT_PKT_VERI:
+ case DN_RT_PKT_VERI:
dn_dev_veri_pkt(skb);
break;
}
goto dump_it;
switch(flags & DN_RT_CNTL_MSK) {
- case DN_RT_PKT_HELO:
- return NF_HOOK(PF_DECnet, NF_DN_HELLO, skb, skb->dev, NULL, dn_route_ptp_hello);
-
- case DN_RT_PKT_L1RT:
- case DN_RT_PKT_L2RT:
- return NF_HOOK(PF_DECnet, NF_DN_ROUTE, skb, skb->dev, NULL, dn_route_discard);
- case DN_RT_PKT_ERTH:
- return NF_HOOK(PF_DECnet, NF_DN_HELLO, skb, skb->dev, NULL, dn_neigh_router_hello);
-
- case DN_RT_PKT_EEDH:
- return NF_HOOK(PF_DECnet, NF_DN_HELLO, skb, skb->dev, NULL, dn_neigh_endnode_hello);
- }
- } else {
+ case DN_RT_PKT_HELO:
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_HELLO,
+ skb, skb->dev, NULL,
+ dn_route_ptp_hello);
+
+ case DN_RT_PKT_L1RT:
+ case DN_RT_PKT_L2RT:
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_ROUTE,
+ skb, skb->dev, NULL,
+ dn_route_discard);
+ case DN_RT_PKT_ERTH:
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_HELLO,
+ skb, skb->dev, NULL,
+ dn_neigh_router_hello);
+
+ case DN_RT_PKT_EEDH:
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_HELLO,
+ skb, skb->dev, NULL,
+ dn_neigh_endnode_hello);
+ }
+ } else {
if (dn->parms.state != DN_DEV_S_RU)
goto dump_it;
skb_pull(skb, 1); /* Pull flags */
- switch(flags & DN_RT_PKT_MSK) {
- case DN_RT_PKT_LONG:
- return dn_route_rx_long(skb);
- case DN_RT_PKT_SHORT:
- return dn_route_rx_short(skb);
+ switch(flags & DN_RT_PKT_MSK) {
+ case DN_RT_PKT_LONG:
+ return dn_route_rx_long(skb);
+ case DN_RT_PKT_SHORT:
+ return dn_route_rx_short(skb);
}
- }
+ }
dump_it:
kfree_skb(skb);
static int dn_output(struct sk_buff *skb)
{
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct dn_route *rt = (struct dn_route *)dst;
struct net_device *dev = dst->dev;
struct dn_skb_cb *cb = DN_SKB_CB(skb);
cb->rt_flags |= DN_RT_F_IE;
cb->hops = 0;
- return NF_HOOK(PF_DECnet, NF_DN_LOCAL_OUT, skb, NULL, dev, neigh->output);
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_LOCAL_OUT, skb, NULL, dev,
+ neigh->output);
error:
if (net_ratelimit())
static int dn_forward(struct sk_buff *skb)
{
struct dn_skb_cb *cb = DN_SKB_CB(skb);
- struct dst_entry *dst = skb->dst;
+ struct dst_entry *dst = skb_dst(skb);
struct dn_dev *dn_db = dst->dev->dn_ptr;
struct dn_route *rt;
struct neighbour *neigh = dst->neighbour;
goto drop;
/* Ensure that we have enough space for headers */
- rt = (struct dn_route *)skb->dst;
+ rt = (struct dn_route *)skb_dst(skb);
header_len = dn_db->use_long ? 21 : 6;
if (skb_cow(skb, LL_RESERVED_SPACE(rt->u.dst.dev)+header_len))
goto drop;
if (rt->rt_flags & RTCF_DOREDIRECT)
cb->rt_flags |= DN_RT_F_IE;
- return NF_HOOK(PF_DECnet, NF_DN_FORWARD, skb, dev, skb->dev, neigh->output);
+ return NF_HOOK(NFPROTO_DECNET, NF_DN_FORWARD, skb, dev, skb->dev,
+ neigh->output);
drop:
kfree_skb(skb);
}
/*
- * Drop packet. This is used for endnodes and for
- * when we should not be forwarding packets from
- * this dest.
- */
-static int dn_blackhole(struct sk_buff *skb)
-{
- kfree_skb(skb);
- return NET_RX_DROP;
-}
-
-/*
* Used to catch bugs. This should never normally get
* called.
*/
struct dn_skb_cb *cb = DN_SKB_CB(skb);
printk(KERN_DEBUG "dn_rt_bug: skb from:%04x to:%04x\n",
- dn_ntohs(cb->src), dn_ntohs(cb->dst));
+ le16_to_cpu(cb->src), le16_to_cpu(cb->dst));
}
kfree_skb(skb);
- return NET_RX_BAD;
+ return NET_RX_DROP;
}
static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
rt->u.dst.neighbour = n;
}
- if (rt->u.dst.metrics[RTAX_MTU-1] == 0 ||
- rt->u.dst.metrics[RTAX_MTU-1] > rt->u.dst.dev->mtu)
+ if (dst_metric(&rt->u.dst, RTAX_MTU) == 0 ||
+ dst_metric(&rt->u.dst, RTAX_MTU) > rt->u.dst.dev->mtu)
rt->u.dst.metrics[RTAX_MTU-1] = rt->u.dst.dev->mtu;
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)
+ if (dst_metric(&rt->u.dst, RTAX_ADVMSS) == 0 ||
+ dst_metric(&rt->u.dst, RTAX_ADVMSS) > mss)
rt->u.dst.metrics[RTAX_ADVMSS-1] = mss;
return 0;
}
static inline int dn_match_addr(__le16 addr1, __le16 addr2)
{
- __u16 tmp = dn_ntohs(addr1) ^ dn_ntohs(addr2);
+ __u16 tmp = le16_to_cpu(addr1) ^ le16_to_cpu(addr2);
int match = 16;
while(tmp) {
tmp >>= 1;
static int dn_route_output_slow(struct dst_entry **pprt, const struct flowi *oldflp, int try_hard)
{
- struct flowi fl = { .nl_u = { .dn_u =
+ struct flowi fl = { .nl_u = { .dn_u =
{ .daddr = oldflp->fld_dst,
.saddr = oldflp->fld_src,
.scope = RT_SCOPE_UNIVERSE,
-#ifdef CONFIG_DECNET_ROUTE_FWMARK
- .fwmark = oldflp->fld_fwmark
-#endif
} },
- .iif = loopback_dev.ifindex,
+ .mark = oldflp->mark,
+ .iif = init_net.loopback_dev->ifindex,
.oif = oldflp->oif };
struct dn_route *rt = NULL;
- struct net_device *dev_out = NULL;
+ struct net_device *dev_out = NULL, *dev;
struct neighbour *neigh = NULL;
unsigned hash;
unsigned flags = 0;
if (decnet_debug_level & 16)
printk(KERN_DEBUG
"dn_route_output_slow: dst=%04x src=%04x mark=%d"
- " iif=%d oif=%d\n", dn_ntohs(oldflp->fld_dst),
- dn_ntohs(oldflp->fld_src),
- oldflp->fld_fwmark, loopback_dev.ifindex, oldflp->oif);
+ " iif=%d oif=%d\n", le16_to_cpu(oldflp->fld_dst),
+ le16_to_cpu(oldflp->fld_src),
+ oldflp->mark, init_net.loopback_dev->ifindex, oldflp->oif);
/* If we have an output interface, verify its a DECnet device */
if (oldflp->oif) {
- dev_out = dev_get_by_index(oldflp->oif);
+ dev_out = dev_get_by_index(&init_net, oldflp->oif);
err = -ENODEV;
if (dev_out && dev_out->dn_ptr == NULL) {
dev_put(dev_out);
dev_put(dev_out);
goto out;
}
- read_lock(&dev_base_lock);
- for(dev_out = dev_base; dev_out; dev_out = dev_out->next) {
- if (!dev_out->dn_ptr)
+ rcu_read_lock();
+ for_each_netdev_rcu(&init_net, dev) {
+ if (!dev->dn_ptr)
continue;
- if (!dn_dev_islocal(dev_out, oldflp->fld_src))
+ if (!dn_dev_islocal(dev, oldflp->fld_src))
continue;
- if ((dev_out->flags & IFF_LOOPBACK) &&
+ if ((dev->flags & IFF_LOOPBACK) &&
oldflp->fld_dst &&
- !dn_dev_islocal(dev_out, oldflp->fld_dst))
+ !dn_dev_islocal(dev, oldflp->fld_dst))
continue;
+
+ dev_out = dev;
break;
}
- read_unlock(&dev_base_lock);
+ rcu_read_unlock();
if (dev_out == NULL)
goto out;
dev_hold(dev_out);
err = -EADDRNOTAVAIL;
if (dev_out)
dev_put(dev_out);
- dev_out = &loopback_dev;
+ dev_out = init_net.loopback_dev;
dev_hold(dev_out);
if (!fl.fld_dst) {
fl.fld_dst =
if (!fl.fld_dst)
goto out;
}
- fl.oif = loopback_dev.ifindex;
+ fl.oif = init_net.loopback_dev->ifindex;
res.type = RTN_LOCAL;
goto make_route;
}
printk(KERN_DEBUG
"dn_route_output_slow: initial checks complete."
" dst=%o4x src=%04x oif=%d try_hard=%d\n",
- dn_ntohs(fl.fld_dst), dn_ntohs(fl.fld_src),
+ le16_to_cpu(fl.fld_dst), le16_to_cpu(fl.fld_src),
fl.oif, try_hard);
/*
if (err != -ESRCH)
goto out;
/*
- * Here the fallback is basically the standard algorithm for
+ * Here the fallback is basically the standard algorithm for
* routing in endnodes which is described in the DECnet routing
* docs
*
* If we are not trying hard, look in neighbour cache.
* The result is tested to ensure that if a specific output
- * device/source address was requested, then we honour that
+ * device/source address was requested, then we honour that
* here
*/
if (!try_hard) {
- neigh = neigh_lookup_nodev(&dn_neigh_table, &fl.fld_dst);
+ neigh = neigh_lookup_nodev(&dn_neigh_table, &init_net, &fl.fld_dst);
if (neigh) {
- if ((oldflp->oif &&
+ if ((oldflp->oif &&
(neigh->dev->ifindex != oldflp->oif)) ||
(oldflp->fld_src &&
(!dn_dev_islocal(neigh->dev,
if (dev_out)
dev_put(dev_out);
if (dn_dev_islocal(neigh->dev, fl.fld_dst)) {
- dev_out = &loopback_dev;
+ dev_out = init_net.loopback_dev;
res.type = RTN_LOCAL;
} else {
dev_out = neigh->dev;
/* Possible improvement - check all devices for local addr */
if (dn_dev_islocal(dev_out, fl.fld_dst)) {
dev_put(dev_out);
- dev_out = &loopback_dev;
+ dev_out = init_net.loopback_dev;
dev_hold(dev_out);
res.type = RTN_LOCAL;
goto select_source;
if (fl.fld_src == 0) {
fl.fld_src = dnet_select_source(dev_out, gateway,
res.type == RTN_LOCAL ?
- RT_SCOPE_HOST :
+ RT_SCOPE_HOST :
RT_SCOPE_LINK);
if (fl.fld_src == 0 && res.type != RTN_LOCAL)
goto e_addr;
fl.fld_src = fl.fld_dst;
if (dev_out)
dev_put(dev_out);
- dev_out = &loopback_dev;
+ dev_out = init_net.loopback_dev;
dev_hold(dev_out);
fl.oif = dev_out->ifindex;
if (res.fi)
if (res.fi->fib_nhs > 1 && fl.oif == 0)
dn_fib_select_multipath(&fl, &res);
- /*
+ /*
* We could add some logic to deal with default routes here and
* get rid of some of the special casing above.
*/
if (!fl.fld_src)
fl.fld_src = DN_FIB_RES_PREFSRC(res);
-
+
if (dev_out)
dev_put(dev_out);
dev_out = DN_FIB_RES_DEV(res);
rt->fl.fld_dst = oldflp->fld_dst;
rt->fl.oif = oldflp->oif;
rt->fl.iif = 0;
-#ifdef CONFIG_DECNET_ROUTE_FWMARK
- rt->fl.fld_fwmark = oldflp->fld_fwmark;
-#endif
+ rt->fl.mark = oldflp->mark;
rt->rt_saddr = fl.fld_src;
rt->rt_daddr = fl.fld_dst;
return err;
e_addr:
- err = -EADDRNOTAVAIL;
- goto done;
+ err = -EADDRNOTAVAIL;
+ goto done;
e_inval:
err = -EINVAL;
goto done;
if (!(flags & MSG_TRYHARD)) {
rcu_read_lock_bh();
- for(rt = rcu_dereference(dn_rt_hash_table[hash].chain); rt;
- rt = rcu_dereference(rt->u.rt_next)) {
+ for (rt = rcu_dereference_bh(dn_rt_hash_table[hash].chain); rt;
+ rt = rcu_dereference_bh(rt->u.dst.dn_next)) {
if ((flp->fld_dst == rt->fl.fld_dst) &&
(flp->fld_src == rt->fl.fld_src) &&
-#ifdef CONFIG_DECNET_ROUTE_FWMARK
- (flp->fld_fwmark == rt->fl.fld_fwmark) &&
-#endif
+ (flp->mark == rt->fl.mark) &&
(rt->fl.iif == 0) &&
(rt->fl.oif == flp->oif)) {
- rt->u.dst.lastuse = jiffies;
- dst_hold(&rt->u.dst);
- rt->u.dst.__use++;
+ dst_use(&rt->u.dst, jiffies);
rcu_read_unlock_bh();
*pprt = &rt->u.dst;
return 0;
err = __dn_route_output_key(pprt, flp, flags);
if (err == 0 && flp->proto) {
- err = xfrm_lookup(pprt, flp, NULL, 0);
+ err = xfrm_lookup(&init_net, pprt, flp, NULL, 0);
}
return err;
}
err = __dn_route_output_key(pprt, fl, flags & MSG_TRYHARD);
if (err == 0 && fl->proto) {
- err = xfrm_lookup(pprt, fl, sk, !(flags & MSG_DONTWAIT));
+ err = xfrm_lookup(&init_net, pprt, fl, sk,
+ (flags & MSG_DONTWAIT) ? 0 : XFRM_LOOKUP_WAIT);
}
return err;
}
int flags = 0;
__le16 gateway = 0;
__le16 local_src = 0;
- struct flowi fl = { .nl_u = { .dn_u =
+ struct flowi fl = { .nl_u = { .dn_u =
{ .daddr = cb->dst,
.saddr = cb->src,
.scope = RT_SCOPE_UNIVERSE,
-#ifdef CONFIG_DECNET_ROUTE_FWMARK
- .fwmark = skb->nfmark
-#endif
} },
+ .mark = skb->mark,
.iif = skb->dev->ifindex };
struct dn_fib_res res = { .fi = NULL, .type = RTN_UNREACHABLE };
int err = -EINVAL;
goto e_inval;
res.type = RTN_LOCAL;
- flags |= RTCF_DIRECTSRC;
} else {
__le16 src_map = fl.fld_src;
free_res = 1;
if (res.fi->fib_nhs > 1 && fl.oif == 0)
dn_fib_select_multipath(&fl, &res);
- /*
+ /*
* Check for out_dev == in_dev. We use the RTCF_DOREDIRECT
* flag as a hint to set the intra-ethernet bit when
* forwarding. If we've got NAT in operation, we don't do
goto make_route;
/* Packet was intra-ethernet, so we know its on-link */
- if (cb->rt_flags | DN_RT_F_IE) {
+ if (cb->rt_flags & DN_RT_F_IE) {
gateway = cb->src;
flags |= RTCF_DIRECTSRC;
goto make_route;
rt->fl.fld_dst = cb->dst;
rt->fl.oif = 0;
rt->fl.iif = in_dev->ifindex;
- rt->fl.fld_fwmark = fl.fld_fwmark;
+ rt->fl.mark = fl.mark;
rt->u.dst.flags = DST_HOST;
rt->u.dst.neighbour = neigh;
default:
case RTN_UNREACHABLE:
case RTN_BLACKHOLE:
- rt->u.dst.input = dn_blackhole;
+ rt->u.dst.input = dst_discard;
}
rt->rt_flags = flags;
if (rt->u.dst.dev)
goto e_neighbour;
hash = dn_hash(rt->fl.fld_src, rt->fl.fld_dst);
- dn_insert_route(rt, hash, (struct dn_route **)&skb->dst);
+ dn_insert_route(rt, hash, &rt);
+ skb_dst_set(skb, &rt->u.dst);
done:
if (neigh)
goto done;
}
-int dn_route_input(struct sk_buff *skb)
+static int dn_route_input(struct sk_buff *skb)
{
struct dn_route *rt;
struct dn_skb_cb *cb = DN_SKB_CB(skb);
unsigned hash = dn_hash(cb->src, cb->dst);
- if (skb->dst)
+ if (skb_dst(skb))
return 0;
rcu_read_lock();
for(rt = rcu_dereference(dn_rt_hash_table[hash].chain); rt != NULL;
- rt = rcu_dereference(rt->u.rt_next)) {
+ rt = rcu_dereference(rt->u.dst.dn_next)) {
if ((rt->fl.fld_src == cb->src) &&
- (rt->fl.fld_dst == cb->dst) &&
+ (rt->fl.fld_dst == cb->dst) &&
(rt->fl.oif == 0) &&
-#ifdef CONFIG_DECNET_ROUTE_FWMARK
- (rt->fl.fld_fwmark == skb->nfmark) &&
-#endif
+ (rt->fl.mark == skb->mark) &&
(rt->fl.iif == cb->iif)) {
- rt->u.dst.lastuse = jiffies;
- dst_hold(&rt->u.dst);
- rt->u.dst.__use++;
+ dst_use(&rt->u.dst, jiffies);
rcu_read_unlock();
- skb->dst = (struct dst_entry *)rt;
+ skb_dst_set(skb, (struct dst_entry *)rt);
return 0;
}
}
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 dn_route *rt = (struct dn_route *)skb_dst(skb);
struct rtmsg *r;
struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
- struct rta_cacheinfo ci;
+ unsigned char *b = skb_tail_pointer(skb);
+ long expires;
nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
r = NLMSG_DATA(nlh);
RTA_PUT(skb, RTA_GATEWAY, 2, &rt->rt_gateway);
if (rtnetlink_put_metrics(skb, rt->u.dst.metrics) < 0)
goto rtattr_failure;
- ci.rta_lastuse = jiffies_to_clock_t(jiffies - rt->u.dst.lastuse);
- ci.rta_used = rt->u.dst.__use;
- ci.rta_clntref = atomic_read(&rt->u.dst.__refcnt);
- if (rt->u.dst.expires)
- ci.rta_expires = jiffies_to_clock_t(rt->u.dst.expires - jiffies);
- else
- ci.rta_expires = 0;
- ci.rta_error = rt->u.dst.error;
- ci.rta_id = ci.rta_ts = ci.rta_tsage = 0;
- RTA_PUT(skb, RTA_CACHEINFO, sizeof(ci), &ci);
+ expires = rt->u.dst.expires ? rt->u.dst.expires - jiffies : 0;
+ if (rtnl_put_cacheinfo(skb, &rt->u.dst, 0, 0, 0, expires,
+ rt->u.dst.error) < 0)
+ goto rtattr_failure;
if (rt->fl.iif)
RTA_PUT(skb, RTA_IIF, sizeof(int), &rt->fl.iif);
- nlh->nlmsg_len = skb->tail - b;
+ nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
nlmsg_failure:
rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ nlmsg_trim(skb, b);
+ return -1;
}
/*
* This is called by both endnodes and routers now.
*/
-int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg)
+static int dn_cache_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = sock_net(in_skb->sk);
struct rtattr **rta = arg;
struct rtmsg *rtm = NLMSG_DATA(nlh);
struct dn_route *rt = NULL;
struct sk_buff *skb;
struct flowi fl;
+ if (!net_eq(net, &init_net))
+ return -EINVAL;
+
memset(&fl, 0, sizeof(fl));
fl.proto = DNPROTO_NSP;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
return -ENOBUFS;
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
cb = DN_SKB_CB(skb);
if (rta[RTA_SRC-1])
if (fl.iif) {
struct net_device *dev;
- if ((dev = dev_get_by_index(fl.iif)) == NULL) {
+ if ((dev = dev_get_by_index(&init_net, fl.iif)) == NULL) {
kfree_skb(skb);
return -ENODEV;
}
kfree_skb(skb);
return -ENODEV;
}
- skb->protocol = __constant_htons(ETH_P_DNA_RT);
+ skb->protocol = htons(ETH_P_DNA_RT);
skb->dev = dev;
cb->src = fl.fld_src;
cb->dst = fl.fld_dst;
err = dn_route_input(skb);
local_bh_enable();
memset(cb, 0, sizeof(struct dn_skb_cb));
- rt = (struct dn_route *)skb->dst;
+ rt = (struct dn_route *)skb_dst(skb);
if (!err && -rt->u.dst.error)
err = rt->u.dst.error;
} else {
skb->dev = NULL;
if (err)
goto out_free;
- skb->dst = &rt->u.dst;
+ skb_dst_set(skb, &rt->u.dst);
if (rtm->rtm_flags & RTM_F_NOTIFY)
rt->rt_flags |= RTCF_NOTIFY;
- 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, 0);
if (err == 0)
goto out_free;
}
- return rtnl_unicast(skb, NETLINK_CB(in_skb).pid);
+ return rtnl_unicast(skb, &init_net, NETLINK_CB(in_skb).pid);
out_free:
kfree_skb(skb);
*/
int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = sock_net(skb->sk);
struct dn_route *rt;
int h, s_h;
int idx, s_idx;
+ if (!net_eq(net, &init_net))
+ return 0;
+
if (NLMSG_PAYLOAD(cb->nlh, 0) < sizeof(struct rtmsg))
return -EINVAL;
if (!(((struct rtmsg *)NLMSG_DATA(cb->nlh))->rtm_flags&RTM_F_CLONED))
if (h > s_h)
s_idx = 0;
rcu_read_lock_bh();
- for(rt = rcu_dereference(dn_rt_hash_table[h].chain), idx = 0;
+ for(rt = rcu_dereference_bh(dn_rt_hash_table[h].chain), idx = 0;
rt;
- rt = rcu_dereference(rt->u.rt_next), idx++) {
+ rt = rcu_dereference_bh(rt->u.dst.dn_next), idx++) {
if (idx < s_idx)
continue;
- skb->dst = dst_clone(&rt->u.dst);
+ skb_dst_set(skb, dst_clone(&rt->u.dst));
if (dn_rt_fill_info(skb, NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, RTM_NEWROUTE,
+ cb->nlh->nlmsg_seq, RTM_NEWROUTE,
1, NLM_F_MULTI) <= 0) {
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
rcu_read_unlock_bh();
goto done;
}
- dst_release(xchg(&skb->dst, NULL));
+ skb_dst_drop(skb);
}
rcu_read_unlock_bh();
}
for(s->bucket = dn_rt_hash_mask; s->bucket >= 0; --s->bucket) {
rcu_read_lock_bh();
- rt = dn_rt_hash_table[s->bucket].chain;
+ rt = rcu_dereference_bh(dn_rt_hash_table[s->bucket].chain);
if (rt)
break;
rcu_read_unlock_bh();
static struct dn_route *dn_rt_cache_get_next(struct seq_file *seq, struct dn_route *rt)
{
- struct dn_rt_cache_iter_state *s = rcu_dereference(seq->private);
+ struct dn_rt_cache_iter_state *s = seq->private;
- rt = rt->u.rt_next;
+ rt = rt->u.dst.dn_next;
while(!rt) {
rcu_read_unlock_bh();
if (--s->bucket < 0)
rcu_read_lock_bh();
rt = dn_rt_hash_table[s->bucket].chain;
}
- return rt;
+ return rcu_dereference_bh(rt);
}
static void *dn_rt_cache_seq_start(struct seq_file *seq, loff_t *pos)
seq_printf(seq, "%-8s %-7s %-7s %04d %04d %04d\n",
rt->u.dst.dev ? rt->u.dst.dev->name : "*",
- dn_addr2asc(dn_ntohs(rt->rt_daddr), buf1),
- dn_addr2asc(dn_ntohs(rt->rt_saddr), buf2),
+ dn_addr2asc(le16_to_cpu(rt->rt_daddr), buf1),
+ dn_addr2asc(le16_to_cpu(rt->rt_saddr), buf2),
atomic_read(&rt->u.dst.__refcnt),
rt->u.dst.__use,
(int) dst_metric(&rt->u.dst, RTAX_RTT));
return 0;
-}
+}
-static struct seq_operations dn_rt_cache_seq_ops = {
+static const struct seq_operations dn_rt_cache_seq_ops = {
.start = dn_rt_cache_seq_start,
.next = dn_rt_cache_seq_next,
.stop = dn_rt_cache_seq_stop,
static int dn_rt_cache_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct dn_rt_cache_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
- rc = seq_open(file, &dn_rt_cache_seq_ops);
- if (rc)
- goto out_kfree;
- seq = file->private_data;
- seq->private = s;
- memset(s, 0, sizeof(*s));
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_private(file, &dn_rt_cache_seq_ops,
+ sizeof(struct dn_rt_cache_iter_state));
}
-static struct file_operations dn_rt_cache_seq_fops = {
+static const struct file_operations dn_rt_cache_seq_fops = {
.owner = THIS_MODULE,
.open = dn_rt_cache_seq_open,
.read = seq_read,
{
int i, goal, order;
- dn_dst_ops.kmem_cachep = kmem_cache_create("dn_dst_cache",
- sizeof(struct dn_route),
- 0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
-
- if (!dn_dst_ops.kmem_cachep)
- panic("DECnet: Failed to allocate dn_dst_cache\n");
-
- init_timer(&dn_route_timer);
- dn_route_timer.function = dn_dst_check_expire;
+ dn_dst_ops.kmem_cachep =
+ kmem_cache_create("dn_dst_cache", sizeof(struct dn_route), 0,
+ SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+ setup_timer(&dn_route_timer, dn_dst_check_expire, 0);
dn_route_timer.expires = jiffies + decnet_dst_gc_interval * HZ;
add_timer(&dn_route_timer);
- goal = num_physpages >> (26 - PAGE_SHIFT);
+ goal = totalram_pages >> (26 - PAGE_SHIFT);
for(order = 0; (1UL << order) < goal; order++)
/* NOTHING */;
- /*
- * Only want 1024 entries max, since the table is very, very unlikely
- * to be larger than that.
- */
- while(order && ((((1UL << order) * PAGE_SIZE) /
- sizeof(struct dn_rt_hash_bucket)) >= 2048))
- order--;
-
- do {
- dn_rt_hash_mask = (1UL << order) * PAGE_SIZE /
- sizeof(struct dn_rt_hash_bucket);
- while(dn_rt_hash_mask & (dn_rt_hash_mask - 1))
- dn_rt_hash_mask--;
- dn_rt_hash_table = (struct dn_rt_hash_bucket *)
- __get_free_pages(GFP_ATOMIC, order);
- } while (dn_rt_hash_table == NULL && --order > 0);
+ /*
+ * Only want 1024 entries max, since the table is very, very unlikely
+ * to be larger than that.
+ */
+ while(order && ((((1UL << order) * PAGE_SIZE) /
+ sizeof(struct dn_rt_hash_bucket)) >= 2048))
+ order--;
+
+ do {
+ dn_rt_hash_mask = (1UL << order) * PAGE_SIZE /
+ sizeof(struct dn_rt_hash_bucket);
+ while(dn_rt_hash_mask & (dn_rt_hash_mask - 1))
+ dn_rt_hash_mask--;
+ dn_rt_hash_table = (struct dn_rt_hash_bucket *)
+ __get_free_pages(GFP_ATOMIC, order);
+ } while (dn_rt_hash_table == NULL && --order > 0);
if (!dn_rt_hash_table)
- panic("Failed to allocate DECnet route cache hash table\n");
+ panic("Failed to allocate DECnet route cache hash table\n");
- printk(KERN_INFO
- "DECnet: Routing cache hash table of %u buckets, %ldKbytes\n",
- dn_rt_hash_mask,
+ printk(KERN_INFO
+ "DECnet: Routing cache hash table of %u buckets, %ldKbytes\n",
+ dn_rt_hash_mask,
(long)(dn_rt_hash_mask*sizeof(struct dn_rt_hash_bucket))/1024);
dn_rt_hash_mask--;
- for(i = 0; i <= dn_rt_hash_mask; i++) {
- spin_lock_init(&dn_rt_hash_table[i].lock);
- dn_rt_hash_table[i].chain = NULL;
- }
+ for(i = 0; i <= dn_rt_hash_mask; i++) {
+ spin_lock_init(&dn_rt_hash_table[i].lock);
+ dn_rt_hash_table[i].chain = NULL;
+ }
- dn_dst_ops.gc_thresh = (dn_rt_hash_mask + 1);
+ dn_dst_ops.gc_thresh = (dn_rt_hash_mask + 1);
- proc_net_fops_create("decnet_cache", S_IRUGO, &dn_rt_cache_seq_fops);
+ proc_net_fops_create(&init_net, "decnet_cache", S_IRUGO, &dn_rt_cache_seq_fops);
+
+#ifdef CONFIG_DECNET_ROUTER
+ rtnl_register(PF_DECnet, RTM_GETROUTE, dn_cache_getroute, dn_fib_dump);
+#else
+ rtnl_register(PF_DECnet, RTM_GETROUTE, dn_cache_getroute,
+ dn_cache_dump);
+#endif
}
void __exit dn_route_cleanup(void)
del_timer(&dn_route_timer);
dn_run_flush(0);
- proc_net_remove("decnet_cache");
+ proc_net_remove(&init_net, "decnet_cache");
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff