From: Yuval Mintz <yuvalm@mellanox.com>
Date: Wed, 28 Feb 2018 23:29:34 +0200
Subject: ipmr, ip6mr: Make mfc_cache a common structure
Patch-mainline: v4.17-rc1
Git-commit: 494fff56379c4ad5b8fe36a5b7ffede4044ca7bb
References: bsc#1112374
mfc_cache and mfc6_cache are almost identical - the main difference is
in the origin/group addresses and comparison-key. Make a common
structure encapsulating most of the multicast routing logic - mr_mfc
and convert both ipmr and ip6mr into using it.
For easy conversion [casting, in this case] mr_mfc has to be the first
field inside every multicast routing abstraction utilizing it.
Signed-off-by: Yuval Mintz <yuvalm@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c | 21 -
include/linux/mroute.h | 45 ---
include/linux/mroute6.h | 23 --
include/linux/mroute_base.h | 45 +++
net/ipv4/ipmr.c | 233 +++++++++++---------
net/ipv6/ip6mr.c | 248 +++++++++++-----------
6 files changed, 312 insertions(+), 303 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c
@@ -126,8 +126,8 @@ mlxsw_sp_mr_route_ivif_in_evifs(const st
switch (mr_route->mr_table->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
- ivif = mr_route->mfc4->mfc_parent;
- return mr_route->mfc4->mfc_un.res.ttls[ivif] != 255;
+ ivif = mr_route->mfc4->_c.mfc_parent;
+ return mr_route->mfc4->_c.mfc_un.res.ttls[ivif] != 255;
case MLXSW_SP_L3_PROTO_IPV6:
/* fall through */
default:
@@ -364,7 +364,7 @@ mlxsw_sp_mr_route4_create(struct mlxsw_s
mr_route->mfc4 = mfc;
mr_route->mr_table = mr_table;
for (i = 0; i < MAXVIFS; i++) {
- if (mfc->mfc_un.res.ttls[i] != 255) {
+ if (mfc->_c.mfc_un.res.ttls[i] != 255) {
err = mlxsw_sp_mr_route_evif_link(mr_route,
&mr_table->vifs[i]);
if (err)
@@ -374,7 +374,8 @@ mlxsw_sp_mr_route4_create(struct mlxsw_s
mr_route->min_mtu = mr_table->vifs[i].dev->mtu;
}
}
- mlxsw_sp_mr_route_ivif_link(mr_route, &mr_table->vifs[mfc->mfc_parent]);
+ mlxsw_sp_mr_route_ivif_link(mr_route,
+ &mr_table->vifs[mfc->_c.mfc_parent]);
mr_route->route_action = mlxsw_sp_mr_route_action(mr_route);
return mr_route;
@@ -418,9 +419,9 @@ static void mlxsw_sp_mr_mfc_offload_set(
switch (mr_route->mr_table->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
if (offload)
- mr_route->mfc4->mfc_flags |= MFC_OFFLOAD;
+ mr_route->mfc4->_c.mfc_flags |= MFC_OFFLOAD;
else
- mr_route->mfc4->mfc_flags &= ~MFC_OFFLOAD;
+ mr_route->mfc4->_c.mfc_flags &= ~MFC_OFFLOAD;
break;
case MLXSW_SP_L3_PROTO_IPV6:
/* fall through */
@@ -943,10 +944,10 @@ static void mlxsw_sp_mr_route_stats_upda
switch (mr_route->mr_table->proto) {
case MLXSW_SP_L3_PROTO_IPV4:
- if (mr_route->mfc4->mfc_un.res.pkt != packets)
- mr_route->mfc4->mfc_un.res.lastuse = jiffies;
- mr_route->mfc4->mfc_un.res.pkt = packets;
- mr_route->mfc4->mfc_un.res.bytes = bytes;
+ if (mr_route->mfc4->_c.mfc_un.res.pkt != packets)
+ mr_route->mfc4->_c.mfc_un.res.lastuse = jiffies;
+ mr_route->mfc4->_c.mfc_un.res.pkt = packets;
+ mr_route->mfc4->_c.mfc_un.res.bytes = bytes;
break;
case MLXSW_SP_L3_PROTO_IPV6:
/* fall through */
--- a/include/linux/mroute.h
+++ b/include/linux/mroute.h
@@ -80,28 +80,13 @@ struct mfc_cache_cmp_arg {
/**
* struct mfc_cache - multicast routing entries
- * @mnode: rhashtable list
+ * @_c: Common multicast routing information; has to be first [for casting]
* @mfc_mcastgrp: destination multicast group address
* @mfc_origin: source address
* @cmparg: used for rhashtable comparisons
- * @mfc_parent: source interface (iif)
- * @mfc_flags: entry flags
- * @expires: unresolved entry expire time
- * @unresolved: unresolved cached skbs
- * @last_assert: time of last assert
- * @minvif: minimum VIF id
- * @maxvif: maximum VIF id
- * @bytes: bytes that have passed for this entry
- * @pkt: packets that have passed for this entry
- * @wrong_if: number of wrong source interface hits
- * @lastuse: time of last use of the group (traffic or update)
- * @ttls: OIF TTL threshold array
- * @refcount: reference count for this entry
- * @list: global entry list
- * @rcu: used for entry destruction
*/
struct mfc_cache {
- struct rhlist_head mnode;
+ struct mr_mfc _c;
union {
struct {
__be32 mfc_mcastgrp;
@@ -109,28 +94,6 @@ struct mfc_cache {
};
struct mfc_cache_cmp_arg cmparg;
};
- vifi_t mfc_parent;
- int mfc_flags;
-
- union {
- struct {
- unsigned long expires;
- struct sk_buff_head unresolved;
- } unres;
- struct {
- unsigned long last_assert;
- int minvif;
- int maxvif;
- unsigned long bytes;
- unsigned long pkt;
- unsigned long wrong_if;
- unsigned long lastuse;
- unsigned char ttls[MAXVIFS];
- refcount_t refcount;
- } res;
- } mfc_un;
- struct list_head list;
- struct rcu_head rcu;
};
struct mfc_entry_notifier_info {
@@ -154,12 +117,12 @@ static inline void ipmr_cache_free(struc
static inline void ipmr_cache_put(struct mfc_cache *c)
{
- if (refcount_dec_and_test(&c->mfc_un.res.refcount))
+ if (refcount_dec_and_test(&c->_c.mfc_un.res.refcount))
ipmr_cache_free(c);
}
static inline void ipmr_cache_hold(struct mfc_cache *c)
{
- refcount_inc(&c->mfc_un.res.refcount);
+ refcount_inc(&c->_c.mfc_un.res.refcount);
}
#endif
--- a/include/linux/mroute6.h
+++ b/include/linux/mroute6.h
@@ -70,7 +70,7 @@ struct mfc6_cache_cmp_arg {
};
struct mfc6_cache {
- struct rhlist_head mnode;
+ struct mr_mfc _c;
union {
struct {
struct in6_addr mf6c_mcastgrp;
@@ -78,27 +78,6 @@ struct mfc6_cache {
};
struct mfc6_cache_cmp_arg cmparg;
};
- mifi_t mf6c_parent; /* Source interface */
- int mfc_flags; /* Flags on line */
-
- union {
- struct {
- unsigned long expires;
- struct sk_buff_head unresolved; /* Unresolved buffers */
- } unres;
- struct {
- unsigned long last_assert;
- int minvif;
- int maxvif;
- unsigned long bytes;
- unsigned long pkt;
- unsigned long wrong_if;
- unsigned long lastuse;
- unsigned char ttls[MAXMIFS]; /* TTL thresholds */
- } res;
- } mfc_un;
- struct list_head list;
- struct rcu_head rcu;
};
#define MFC_STATIC 1
--- a/include/linux/mroute_base.h
+++ b/include/linux/mroute_base.h
@@ -45,6 +45,51 @@ struct vif_device {
#define VIF_EXISTS(_mrt, _idx) (!!((_mrt)->vif_table[_idx].dev))
/**
+ * struct mr_mfc - common multicast routing entries
+ * @mnode: rhashtable list
+ * @mfc_parent: source interface (iif)
+ * @mfc_flags: entry flags
+ * @expires: unresolved entry expire time
+ * @unresolved: unresolved cached skbs
+ * @last_assert: time of last assert
+ * @minvif: minimum VIF id
+ * @maxvif: maximum VIF id
+ * @bytes: bytes that have passed for this entry
+ * @pkt: packets that have passed for this entry
+ * @wrong_if: number of wrong source interface hits
+ * @lastuse: time of last use of the group (traffic or update)
+ * @ttls: OIF TTL threshold array
+ * @refcount: reference count for this entry
+ * @list: global entry list
+ * @rcu: used for entry destruction
+ */
+struct mr_mfc {
+ struct rhlist_head mnode;
+ unsigned short mfc_parent;
+ int mfc_flags;
+
+ union {
+ struct {
+ unsigned long expires;
+ struct sk_buff_head unresolved;
+ } unres;
+ struct {
+ unsigned long last_assert;
+ int minvif;
+ int maxvif;
+ unsigned long bytes;
+ unsigned long pkt;
+ unsigned long wrong_if;
+ unsigned long lastuse;
+ unsigned char ttls[MAXVIFS];
+ refcount_t refcount;
+ } res;
+ } mfc_un;
+ struct list_head list;
+ struct rcu_head rcu;
+};
+
+/**
* struct mr_table - a multicast routing table
* @list: entry within a list of multicast routing tables
* @net: net where this table belongs
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -105,7 +105,7 @@ static void ip_mr_forward(struct net *ne
static int ipmr_cache_report(struct mr_table *mrt,
struct sk_buff *pkt, vifi_t vifi, int assert);
static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
- struct mfc_cache *c, struct rtmsg *rtm);
+ struct mr_mfc *c, struct rtmsg *rtm);
static void mroute_netlink_event(struct mr_table *mrt, struct mfc_cache *mfc,
int cmd);
static void mroute_clean_tables(struct mr_table *mrt, bool all);
@@ -341,7 +341,7 @@ static inline int ipmr_hash_cmp(struct r
}
static const struct rhashtable_params ipmr_rht_params = {
- .head_offset = offsetof(struct mfc_cache, mnode),
+ .head_offset = offsetof(struct mr_mfc, mnode),
.key_offset = offsetof(struct mfc_cache, cmparg),
.key_len = sizeof(struct mfc_cache_cmp_arg),
.nelem_hint = 3,
@@ -758,14 +758,14 @@ static int vif_delete(struct mr_table *m
static void ipmr_cache_free_rcu(struct rcu_head *head)
{
- struct mfc_cache *c = container_of(head, struct mfc_cache, rcu);
+ struct mr_mfc *c = container_of(head, struct mr_mfc, rcu);
- kmem_cache_free(mrt_cachep, c);
+ kmem_cache_free(mrt_cachep, (struct mfc_cache *)c);
}
void ipmr_cache_free(struct mfc_cache *c)
{
- call_rcu(&c->rcu, ipmr_cache_free_rcu);
+ call_rcu(&c->_c.rcu, ipmr_cache_free_rcu);
}
EXPORT_SYMBOL(ipmr_cache_free);
@@ -780,7 +780,7 @@ static void ipmr_destroy_unres(struct mr
atomic_dec(&mrt->cache_resolve_queue_len);
- while ((skb = skb_dequeue(&c->mfc_un.unres.unresolved))) {
+ while ((skb = skb_dequeue(&c->_c.mfc_un.unres.unresolved))) {
if (ip_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = skb_pull(skb,
sizeof(struct iphdr));
@@ -804,9 +804,9 @@ static void ipmr_destroy_unres(struct mr
static void ipmr_expire_process(unsigned long arg)
{
struct mr_table *mrt = (struct mr_table *)arg;
- unsigned long now;
+ struct mr_mfc *c, *next;
unsigned long expires;
- struct mfc_cache *c, *next;
+ unsigned long now;
if (!spin_trylock(&mfc_unres_lock)) {
mod_timer(&mrt->ipmr_expire_timer, jiffies+HZ/10);
@@ -828,8 +828,8 @@ static void ipmr_expire_process(unsigned
}
list_del(&c->list);
- mroute_netlink_event(mrt, c, RTM_DELROUTE);
- ipmr_destroy_unres(mrt, c);
+ mroute_netlink_event(mrt, (struct mfc_cache *)c, RTM_DELROUTE);
+ ipmr_destroy_unres(mrt, (struct mfc_cache *)c);
}
if (!list_empty(&mrt->mfc_unres_queue))
@@ -840,7 +840,7 @@ out:
}
/* Fill oifs list. It is called under write locked mrt_lock. */
-static void ipmr_update_thresholds(struct mr_table *mrt, struct mfc_cache *cache,
+static void ipmr_update_thresholds(struct mr_table *mrt, struct mr_mfc *cache,
unsigned char *ttls)
{
int vifi;
@@ -980,11 +980,11 @@ static struct mfc_cache *ipmr_cache_find
.mfc_origin = origin
};
struct rhlist_head *tmp, *list;
- struct mfc_cache *c;
+ struct mr_mfc *c;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ipmr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode)
- return c;
+ return (struct mfc_cache *)c;
return NULL;
}
@@ -998,12 +998,12 @@ static struct mfc_cache *ipmr_cache_find
.mfc_origin = htonl(INADDR_ANY)
};
struct rhlist_head *tmp, *list;
- struct mfc_cache *c;
+ struct mr_mfc *c;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ipmr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode)
if (c->mfc_un.res.ttls[vifi] < 255)
- return c;
+ return (struct mfc_cache *)c;
return NULL;
}
@@ -1017,20 +1017,22 @@ static struct mfc_cache *ipmr_cache_find
.mfc_origin = htonl(INADDR_ANY)
};
struct rhlist_head *tmp, *list;
- struct mfc_cache *c, *proxy;
+ struct mr_mfc *c;
if (mcastgrp == htonl(INADDR_ANY))
goto skip;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ipmr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode) {
+ struct mfc_cache *proxy;
+
if (c->mfc_un.res.ttls[vifi] < 255)
- return c;
+ return (struct mfc_cache *)c;
/* It's ok if the vifi is part of the static tree */
proxy = ipmr_cache_find_any_parent(mrt, c->mfc_parent);
- if (proxy && proxy->mfc_un.res.ttls[vifi] < 255)
- return c;
+ if (proxy && proxy->_c.mfc_un.res.ttls[vifi] < 255)
+ return (struct mfc_cache *)c;
}
skip:
@@ -1047,12 +1049,12 @@ static struct mfc_cache *ipmr_cache_find
.mfc_origin = origin,
};
struct rhlist_head *tmp, *list;
- struct mfc_cache *c;
+ struct mr_mfc *c;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ipmr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode)
if (parent == -1 || parent == c->mfc_parent)
- return c;
+ return (struct mfc_cache *)c;
return NULL;
}
@@ -1063,9 +1065,9 @@ static struct mfc_cache *ipmr_cache_allo
struct mfc_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
if (c) {
- c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
- c->mfc_un.res.minvif = MAXVIFS;
- refcount_set(&c->mfc_un.res.refcount, 1);
+ c->_c.mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
+ c->_c.mfc_un.res.minvif = MAXVIFS;
+ refcount_set(&c->_c.mfc_un.res.refcount, 1);
}
return c;
}
@@ -1075,8 +1077,8 @@ static struct mfc_cache *ipmr_cache_allo
struct mfc_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC);
if (c) {
- skb_queue_head_init(&c->mfc_un.unres.unresolved);
- c->mfc_un.unres.expires = jiffies + 10*HZ;
+ skb_queue_head_init(&c->_c.mfc_un.unres.unresolved);
+ c->_c.mfc_un.unres.expires = jiffies + 10 * HZ;
}
return c;
}
@@ -1089,12 +1091,13 @@ static void ipmr_cache_resolve(struct ne
struct nlmsgerr *e;
/* Play the pending entries through our router */
- while ((skb = __skb_dequeue(&uc->mfc_un.unres.unresolved))) {
+ while ((skb = __skb_dequeue(&uc->_c.mfc_un.unres.unresolved))) {
if (ip_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = skb_pull(skb,
sizeof(struct iphdr));
- if (__ipmr_fill_mroute(mrt, skb, c, nlmsg_data(nlh)) > 0) {
+ if (__ipmr_fill_mroute(mrt, skb, &c->_c,
+ nlmsg_data(nlh)) > 0) {
nlh->nlmsg_len = skb_tail_pointer(skb) -
(u8 *)nlh;
} else {
@@ -1201,7 +1204,7 @@ static int ipmr_cache_unresolved(struct
int err;
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry(c, &mrt->mfc_unres_queue, list) {
+ list_for_each_entry(c, &mrt->mfc_unres_queue, _c.list) {
if (c->mfc_mcastgrp == iph->daddr &&
c->mfc_origin == iph->saddr) {
found = true;
@@ -1220,12 +1223,13 @@ static int ipmr_cache_unresolved(struct
}
/* Fill in the new cache entry */
- c->mfc_parent = -1;
+ c->_c.mfc_parent = -1;
c->mfc_origin = iph->saddr;
c->mfc_mcastgrp = iph->daddr;
/* Reflect first query at mrouted. */
err = ipmr_cache_report(mrt, skb, vifi, IGMPMSG_NOCACHE);
+
if (err < 0) {
/* If the report failed throw the cache entry
out - Brad Parker
@@ -1238,15 +1242,16 @@ static int ipmr_cache_unresolved(struct
}
atomic_inc(&mrt->cache_resolve_queue_len);
- list_add(&c->list, &mrt->mfc_unres_queue);
+ list_add(&c->_c.list, &mrt->mfc_unres_queue);
mroute_netlink_event(mrt, c, RTM_NEWROUTE);
if (atomic_read(&mrt->cache_resolve_queue_len) == 1)
- mod_timer(&mrt->ipmr_expire_timer, c->mfc_un.unres.expires);
+ mod_timer(&mrt->ipmr_expire_timer,
+ c->_c.mfc_un.unres.expires);
}
/* See if we can append the packet */
- if (c->mfc_un.unres.unresolved.qlen > 3) {
+ if (c->_c.mfc_un.unres.unresolved.qlen > 3) {
kfree_skb(skb);
err = -ENOBUFS;
} else {
@@ -1254,7 +1259,7 @@ static int ipmr_cache_unresolved(struct
skb->dev = dev;
skb->skb_iif = dev->ifindex;
}
- skb_queue_tail(&c->mfc_un.unres.unresolved, skb);
+ skb_queue_tail(&c->_c.mfc_un.unres.unresolved, skb);
err = 0;
}
@@ -1276,8 +1281,8 @@ static int ipmr_mfc_delete(struct mr_tab
rcu_read_unlock();
if (!c)
return -ENOENT;
- rhltable_remove(&mrt->mfc_hash, &c->mnode, ipmr_rht_params);
- list_del_rcu(&c->list);
+ rhltable_remove(&mrt->mfc_hash, &c->_c.mnode, ipmr_rht_params);
+ list_del_rcu(&c->_c.list);
call_ipmr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, c, mrt->id);
mroute_netlink_event(mrt, c, RTM_DELROUTE);
ipmr_cache_put(c);
@@ -1289,6 +1294,7 @@ static int ipmr_mfc_add(struct net *net,
struct mfcctl *mfc, int mrtsock, int parent)
{
struct mfc_cache *uc, *c;
+ struct mr_mfc *_uc;
bool found;
int ret;
@@ -1302,10 +1308,10 @@ static int ipmr_mfc_add(struct net *net,
rcu_read_unlock();
if (c) {
write_lock_bh(&mrt_lock);
- c->mfc_parent = mfc->mfcc_parent;
- ipmr_update_thresholds(mrt, c, mfc->mfcc_ttls);
+ c->_c.mfc_parent = mfc->mfcc_parent;
+ ipmr_update_thresholds(mrt, &c->_c, mfc->mfcc_ttls);
if (!mrtsock)
- c->mfc_flags |= MFC_STATIC;
+ c->_c.mfc_flags |= MFC_STATIC;
write_unlock_bh(&mrt_lock);
call_ipmr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_REPLACE, c,
mrt->id);
@@ -1323,28 +1329,29 @@ static int ipmr_mfc_add(struct net *net,
c->mfc_origin = mfc->mfcc_origin.s_addr;
c->mfc_mcastgrp = mfc->mfcc_mcastgrp.s_addr;
- c->mfc_parent = mfc->mfcc_parent;
- ipmr_update_thresholds(mrt, c, mfc->mfcc_ttls);
+ c->_c.mfc_parent = mfc->mfcc_parent;
+ ipmr_update_thresholds(mrt, &c->_c, mfc->mfcc_ttls);
if (!mrtsock)
- c->mfc_flags |= MFC_STATIC;
+ c->_c.mfc_flags |= MFC_STATIC;
- ret = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->mnode,
+ ret = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->_c.mnode,
ipmr_rht_params);
if (ret) {
pr_err("ipmr: rhtable insert error %d\n", ret);
ipmr_cache_free(c);
return ret;
}
- list_add_tail_rcu(&c->list, &mrt->mfc_cache_list);
+ list_add_tail_rcu(&c->_c.list, &mrt->mfc_cache_list);
/* Check to see if we resolved a queued list. If so we
* need to send on the frames and tidy up.
*/
found = false;
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry(uc, &mrt->mfc_unres_queue, list) {
+ list_for_each_entry(_uc, &mrt->mfc_unres_queue, list) {
+ uc = (struct mfc_cache *)_uc;
if (uc->mfc_origin == c->mfc_origin &&
uc->mfc_mcastgrp == c->mfc_mcastgrp) {
- list_del(&uc->list);
+ list_del(&_uc->list);
atomic_dec(&mrt->cache_resolve_queue_len);
found = true;
break;
@@ -1367,7 +1374,8 @@ static int ipmr_mfc_add(struct net *net,
static void mroute_clean_tables(struct mr_table *mrt, bool all)
{
struct net *net = read_pnet(&mrt->net);
- struct mfc_cache *c, *tmp;
+ struct mr_mfc *c, *tmp;
+ struct mfc_cache *cache;
LIST_HEAD(list);
int i;
@@ -1385,18 +1393,20 @@ static void mroute_clean_tables(struct m
continue;
rhltable_remove(&mrt->mfc_hash, &c->mnode, ipmr_rht_params);
list_del_rcu(&c->list);
- call_ipmr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, c,
+ cache = (struct mfc_cache *)c;
+ call_ipmr_mfc_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, cache,
mrt->id);
- mroute_netlink_event(mrt, c, RTM_DELROUTE);
- ipmr_cache_put(c);
+ mroute_netlink_event(mrt, cache, RTM_DELROUTE);
+ ipmr_cache_put(cache);
}
if (atomic_read(&mrt->cache_resolve_queue_len) != 0) {
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry_safe(c, tmp, &mrt->mfc_unres_queue, list) {
list_del(&c->list);
- mroute_netlink_event(mrt, c, RTM_DELROUTE);
- ipmr_destroy_unres(mrt, c);
+ cache = (struct mfc_cache *)c;
+ mroute_netlink_event(mrt, cache, RTM_DELROUTE);
+ ipmr_destroy_unres(mrt, cache);
}
spin_unlock_bh(&mfc_unres_lock);
}
@@ -1687,9 +1697,9 @@ int ipmr_ioctl(struct sock *sk, int cmd,
rcu_read_lock();
c = ipmr_cache_find(mrt, sr.src.s_addr, sr.grp.s_addr);
if (c) {
- sr.pktcnt = c->mfc_un.res.pkt;
- sr.bytecnt = c->mfc_un.res.bytes;
- sr.wrong_if = c->mfc_un.res.wrong_if;
+ sr.pktcnt = c->_c.mfc_un.res.pkt;
+ sr.bytecnt = c->_c.mfc_un.res.bytes;
+ sr.wrong_if = c->_c.mfc_un.res.wrong_if;
rcu_read_unlock();
if (copy_to_user(arg, &sr, sizeof(sr)))
@@ -1761,9 +1771,9 @@ int ipmr_compat_ioctl(struct sock *sk, u
rcu_read_lock();
c = ipmr_cache_find(mrt, sr.src.s_addr, sr.grp.s_addr);
if (c) {
- sr.pktcnt = c->mfc_un.res.pkt;
- sr.bytecnt = c->mfc_un.res.bytes;
- sr.wrong_if = c->mfc_un.res.wrong_if;
+ sr.pktcnt = c->_c.mfc_un.res.pkt;
+ sr.bytecnt = c->_c.mfc_un.res.bytes;
+ sr.wrong_if = c->_c.mfc_un.res.wrong_if;
rcu_read_unlock();
if (copy_to_user(arg, &sr, sizeof(sr)))
@@ -1987,18 +1997,18 @@ static int ipmr_find_vif(struct mr_table
/* "local" means that we should preserve one skb (for local delivery) */
static void ip_mr_forward(struct net *net, struct mr_table *mrt,
struct net_device *dev, struct sk_buff *skb,
- struct mfc_cache *cache, int local)
+ struct mfc_cache *c, int local)
{
int true_vifi = ipmr_find_vif(mrt, dev);
int psend = -1;
int vif, ct;
- vif = cache->mfc_parent;
- cache->mfc_un.res.pkt++;
- cache->mfc_un.res.bytes += skb->len;
- cache->mfc_un.res.lastuse = jiffies;
+ vif = c->_c.mfc_parent;
+ c->_c.mfc_un.res.pkt++;
+ c->_c.mfc_un.res.bytes += skb->len;
+ c->_c.mfc_un.res.lastuse = jiffies;
- if (cache->mfc_origin == htonl(INADDR_ANY) && true_vifi >= 0) {
+ if (c->mfc_origin == htonl(INADDR_ANY) && true_vifi >= 0) {
struct mfc_cache *cache_proxy;
/* For an (*,G) entry, we only check that the incomming
@@ -2006,7 +2016,7 @@ static void ip_mr_forward(struct net *ne
*/
cache_proxy = ipmr_cache_find_any_parent(mrt, vif);
if (cache_proxy &&
- cache_proxy->mfc_un.res.ttls[true_vifi] < 255)
+ cache_proxy->_c.mfc_un.res.ttls[true_vifi] < 255)
goto forward;
}
@@ -2027,7 +2037,7 @@ static void ip_mr_forward(struct net *ne
goto dont_forward;
}
- cache->mfc_un.res.wrong_if++;
+ c->_c.mfc_un.res.wrong_if++;
if (true_vifi >= 0 && mrt->mroute_do_assert &&
/* pimsm uses asserts, when switching from RPT to SPT,
@@ -2036,10 +2046,11 @@ static void ip_mr_forward(struct net *ne
* large chunk of pimd to kernel. Ough... --ANK
*/
(mrt->mroute_do_pim ||
- cache->mfc_un.res.ttls[true_vifi] < 255) &&
+ c->_c.mfc_un.res.ttls[true_vifi] < 255) &&
time_after(jiffies,
- cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) {
- cache->mfc_un.res.last_assert = jiffies;
+ c->_c.mfc_un.res.last_assert +
+ MFC_ASSERT_THRESH)) {
+ c->_c.mfc_un.res.last_assert = jiffies;
ipmr_cache_report(mrt, skb, true_vifi, IGMPMSG_WRONGVIF);
}
goto dont_forward;
@@ -2050,33 +2061,33 @@ forward:
mrt->vif_table[vif].bytes_in += skb->len;
/* Forward the frame */
- if (cache->mfc_origin == htonl(INADDR_ANY) &&
- cache->mfc_mcastgrp == htonl(INADDR_ANY)) {
+ if (c->mfc_origin == htonl(INADDR_ANY) &&
+ c->mfc_mcastgrp == htonl(INADDR_ANY)) {
if (true_vifi >= 0 &&
- true_vifi != cache->mfc_parent &&
+ true_vifi != c->_c.mfc_parent &&
ip_hdr(skb)->ttl >
- cache->mfc_un.res.ttls[cache->mfc_parent]) {
+ c->_c.mfc_un.res.ttls[c->_c.mfc_parent]) {
/* It's an (*,*) entry and the packet is not coming from
* the upstream: forward the packet to the upstream
* only.
*/
- psend = cache->mfc_parent;
+ psend = c->_c.mfc_parent;
goto last_forward;
}
goto dont_forward;
}
- for (ct = cache->mfc_un.res.maxvif - 1;
- ct >= cache->mfc_un.res.minvif; ct--) {
+ for (ct = c->_c.mfc_un.res.maxvif - 1;
+ ct >= c->_c.mfc_un.res.minvif; ct--) {
/* For (*,G) entry, don't forward to the incoming interface */
- if ((cache->mfc_origin != htonl(INADDR_ANY) ||
+ if ((c->mfc_origin != htonl(INADDR_ANY) ||
ct != true_vifi) &&
- ip_hdr(skb)->ttl > cache->mfc_un.res.ttls[ct]) {
+ ip_hdr(skb)->ttl > c->_c.mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
ipmr_queue_xmit(net, mrt, true_vifi,
- skb2, cache, psend);
+ skb2, c, psend);
}
psend = ct;
}
@@ -2088,9 +2099,9 @@ last_forward:
if (skb2)
ipmr_queue_xmit(net, mrt, true_vifi, skb2,
- cache, psend);
+ c, psend);
} else {
- ipmr_queue_xmit(net, mrt, true_vifi, skb, cache, psend);
+ ipmr_queue_xmit(net, mrt, true_vifi, skb, c, psend);
return;
}
}
@@ -2289,7 +2300,7 @@ drop:
#endif
static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
- struct mfc_cache *c, struct rtmsg *rtm)
+ struct mr_mfc *c, struct rtmsg *rtm)
{
struct rta_mfc_stats mfcs;
struct nlattr *mp_attr;
@@ -2405,7 +2416,7 @@ int ipmr_get_route(struct net *net, stru
}
read_lock(&mrt_lock);
- err = __ipmr_fill_mroute(mrt, skb, cache, rtm);
+ err = __ipmr_fill_mroute(mrt, skb, &cache->_c, rtm);
read_unlock(&mrt_lock);
rcu_read_unlock();
return err;
@@ -2433,7 +2444,7 @@ static int ipmr_fill_mroute(struct mr_ta
goto nla_put_failure;
rtm->rtm_type = RTN_MULTICAST;
rtm->rtm_scope = RT_SCOPE_UNIVERSE;
- if (c->mfc_flags & MFC_STATIC)
+ if (c->_c.mfc_flags & MFC_STATIC)
rtm->rtm_protocol = RTPROT_STATIC;
else
rtm->rtm_protocol = RTPROT_MROUTED;
@@ -2442,7 +2453,7 @@ static int ipmr_fill_mroute(struct mr_ta
if (nla_put_in_addr(skb, RTA_SRC, c->mfc_origin) ||
nla_put_in_addr(skb, RTA_DST, c->mfc_mcastgrp))
goto nla_put_failure;
- err = __ipmr_fill_mroute(mrt, skb, c, rtm);
+ err = __ipmr_fill_mroute(mrt, skb, &c->_c, rtm);
/* do not break the dump if cache is unresolved */
if (err < 0 && err != -ENOENT)
goto nla_put_failure;
@@ -2483,7 +2494,8 @@ static void mroute_netlink_event(struct
struct sk_buff *skb;
int err = -ENOBUFS;
- skb = nlmsg_new(mroute_msgsize(mfc->mfc_parent >= MAXVIFS, mrt->maxvif),
+ skb = nlmsg_new(mroute_msgsize(mfc->_c.mfc_parent >= MAXVIFS,
+ mrt->maxvif),
GFP_ATOMIC);
if (!skb)
goto errout;
@@ -2504,10 +2516,10 @@ errout:
static int ipmr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
- struct mr_table *mrt;
- struct mfc_cache *mfc;
unsigned int t = 0, s_t;
unsigned int e = 0, s_e;
+ struct mr_table *mrt;
+ struct mr_mfc *mfc;
s_t = cb->args[0];
s_e = cb->args[1];
@@ -2522,8 +2534,8 @@ static int ipmr_rtm_dumproute(struct sk_
if (ipmr_fill_mroute(mrt, skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
- mfc, RTM_NEWROUTE,
- NLM_F_MULTI) < 0)
+ (struct mfc_cache *)mfc,
+ RTM_NEWROUTE, NLM_F_MULTI) < 0)
goto done;
next_entry:
e++;
@@ -2538,8 +2550,8 @@ next_entry:
if (ipmr_fill_mroute(mrt, skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
- mfc, RTM_NEWROUTE,
- NLM_F_MULTI) < 0) {
+ (struct mfc_cache *)mfc,
+ RTM_NEWROUTE, NLM_F_MULTI) < 0) {
spin_unlock_bh(&mfc_unres_lock);
goto done;
}
@@ -2809,20 +2821,21 @@ static struct mfc_cache *ipmr_mfc_seq_id
struct ipmr_mfc_iter *it, loff_t pos)
{
struct mr_table *mrt = it->mrt;
- struct mfc_cache *mfc;
+ struct mr_mfc *mfc;
rcu_read_lock();
it->cache = &mrt->mfc_cache_list;
list_for_each_entry_rcu(mfc, &mrt->mfc_cache_list, list)
if (pos-- == 0)
- return mfc;
+ return (struct mfc_cache *)mfc;
rcu_read_unlock();
spin_lock_bh(&mfc_unres_lock);
it->cache = &mrt->mfc_unres_queue;
list_for_each_entry(mfc, it->cache, list)
if (pos-- == 0)
- return mfc;
+ return (struct mfc_cache *)mfc;
+
spin_unlock_bh(&mfc_unres_lock);
it->cache = NULL;
@@ -2858,8 +2871,9 @@ static void *ipmr_mfc_seq_next(struct se
if (v == SEQ_START_TOKEN)
return ipmr_mfc_seq_idx(net, seq->private, 0);
- if (mfc->list.next != it->cache)
- return list_entry(mfc->list.next, struct mfc_cache, list);
+ if (mfc->_c.list.next != it->cache)
+ return (struct mfc_cache *)(list_entry(mfc->_c.list.next,
+ struct mr_mfc, list));
if (it->cache == &mrt->mfc_unres_queue)
goto end_of_list;
@@ -2870,7 +2884,9 @@ static void *ipmr_mfc_seq_next(struct se
spin_lock_bh(&mfc_unres_lock);
if (!list_empty(it->cache))
- return list_first_entry(it->cache, struct mfc_cache, list);
+ return (struct mfc_cache *)(list_first_entry(it->cache,
+ struct mr_mfc,
+ list));
end_of_list:
spin_unlock_bh(&mfc_unres_lock);
@@ -2905,20 +2921,20 @@ static int ipmr_mfc_seq_show(struct seq_
seq_printf(seq, "%08X %08X %-3hd",
(__force u32) mfc->mfc_mcastgrp,
(__force u32) mfc->mfc_origin,
- mfc->mfc_parent);
+ mfc->_c.mfc_parent);
if (it->cache != &mrt->mfc_unres_queue) {
seq_printf(seq, " %8lu %8lu %8lu",
- mfc->mfc_un.res.pkt,
- mfc->mfc_un.res.bytes,
- mfc->mfc_un.res.wrong_if);
- for (n = mfc->mfc_un.res.minvif;
- n < mfc->mfc_un.res.maxvif; n++) {
+ mfc->_c.mfc_un.res.pkt,
+ mfc->_c.mfc_un.res.bytes,
+ mfc->_c.mfc_un.res.wrong_if);
+ for (n = mfc->_c.mfc_un.res.minvif;
+ n < mfc->_c.mfc_un.res.maxvif; n++) {
if (VIF_EXISTS(mrt, n) &&
- mfc->mfc_un.res.ttls[n] < 255)
+ mfc->_c.mfc_un.res.ttls[n] < 255)
seq_printf(seq,
" %2d:%-3d",
- n, mfc->mfc_un.res.ttls[n]);
+ n, mfc->_c.mfc_un.res.ttls[n]);
}
} else {
/* unresolved mfc_caches don't contain
@@ -2978,7 +2994,7 @@ static int ipmr_dump(struct net *net, st
ipmr_for_each_table(mrt, net) {
struct vif_device *v = &mrt->vif_table[0];
- struct mfc_cache *mfc;
+ struct mr_mfc *mfc;
int vifi;
/* Notifiy on table VIF entries */
@@ -2995,7 +3011,8 @@ static int ipmr_dump(struct net *net, st
/* Notify on table MFC entries */
list_for_each_entry_rcu(mfc, &mrt->mfc_cache_list, list)
call_ipmr_mfc_entry_notifier(nb, net,
- FIB_EVENT_ENTRY_ADD, mfc,
+ FIB_EVENT_ENTRY_ADD,
+ (struct mfc_cache *)mfc,
mrt->id);
}
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -285,7 +285,7 @@ static int ip6mr_hash_cmp(struct rhashta
}
static const struct rhashtable_params ip6mr_rht_params = {
- .head_offset = offsetof(struct mfc6_cache, mnode),
+ .head_offset = offsetof(struct mr_mfc, mnode),
.key_offset = offsetof(struct mfc6_cache, cmparg),
.key_len = sizeof(struct mfc6_cache_cmp_arg),
.nelem_hint = 3,
@@ -345,20 +345,20 @@ static struct mfc6_cache *ipmr_mfc_seq_i
struct ipmr_mfc_iter *it, loff_t pos)
{
struct mr_table *mrt = it->mrt;
- struct mfc6_cache *mfc;
+ struct mr_mfc *mfc;
rcu_read_lock();
it->cache = &mrt->mfc_cache_list;
list_for_each_entry_rcu(mfc, &mrt->mfc_cache_list, list)
if (pos-- == 0)
- return mfc;
+ return (struct mfc6_cache *)mfc;
rcu_read_unlock();
spin_lock_bh(&mfc_unres_lock);
it->cache = &mrt->mfc_unres_queue;
list_for_each_entry(mfc, it->cache, list)
if (pos-- == 0)
- return mfc;
+ return (struct mfc6_cache *)mfc;
spin_unlock_bh(&mfc_unres_lock);
it->cache = NULL;
@@ -503,8 +503,9 @@ static void *ipmr_mfc_seq_next(struct se
if (v == SEQ_START_TOKEN)
return ipmr_mfc_seq_idx(net, seq->private, 0);
- if (mfc->list.next != it->cache)
- return list_entry(mfc->list.next, struct mfc6_cache, list);
+ if (mfc->_c.list.next != it->cache)
+ return (struct mfc6_cache *)(list_entry(mfc->_c.list.next,
+ struct mr_mfc, list));
if (it->cache == &mrt->mfc_unres_queue)
goto end_of_list;
@@ -515,7 +516,9 @@ static void *ipmr_mfc_seq_next(struct se
spin_lock_bh(&mfc_unres_lock);
if (!list_empty(it->cache))
- return list_first_entry(it->cache, struct mfc6_cache, list);
+ return (struct mfc6_cache *)(list_first_entry(it->cache,
+ struct mr_mfc,
+ list));
end_of_list:
spin_unlock_bh(&mfc_unres_lock);
@@ -551,20 +554,20 @@ static int ipmr_mfc_seq_show(struct seq_
seq_printf(seq, "%pI6 %pI6 %-3hd",
&mfc->mf6c_mcastgrp, &mfc->mf6c_origin,
- mfc->mf6c_parent);
+ mfc->_c.mfc_parent);
if (it->cache != &mrt->mfc_unres_queue) {
seq_printf(seq, " %8lu %8lu %8lu",
- mfc->mfc_un.res.pkt,
- mfc->mfc_un.res.bytes,
- mfc->mfc_un.res.wrong_if);
- for (n = mfc->mfc_un.res.minvif;
- n < mfc->mfc_un.res.maxvif; n++) {
+ mfc->_c.mfc_un.res.pkt,
+ mfc->_c.mfc_un.res.bytes,
+ mfc->_c.mfc_un.res.wrong_if);
+ for (n = mfc->_c.mfc_un.res.minvif;
+ n < mfc->_c.mfc_un.res.maxvif; n++) {
if (VIF_EXISTS(mrt, n) &&
- mfc->mfc_un.res.ttls[n] < 255)
+ mfc->_c.mfc_un.res.ttls[n] < 255)
seq_printf(seq,
- " %2d:%-3d",
- n, mfc->mfc_un.res.ttls[n]);
+ " %2d:%-3d", n,
+ mfc->_c.mfc_un.res.ttls[n]);
}
} else {
/* unresolved mfc_caches don't contain
@@ -812,14 +815,14 @@ static int mif6_delete(struct mr_table *
static inline void ip6mr_cache_free_rcu(struct rcu_head *head)
{
- struct mfc6_cache *c = container_of(head, struct mfc6_cache, rcu);
+ struct mr_mfc *c = container_of(head, struct mr_mfc, rcu);
- kmem_cache_free(mrt_cachep, c);
+ kmem_cache_free(mrt_cachep, (struct mfc6_cache *)c);
}
static inline void ip6mr_cache_free(struct mfc6_cache *c)
{
- call_rcu(&c->rcu, ip6mr_cache_free_rcu);
+ call_rcu(&c->_c.rcu, ip6mr_cache_free_rcu);
}
/* Destroy an unresolved cache entry, killing queued skbs
@@ -833,7 +836,7 @@ static void ip6mr_destroy_unres(struct m
atomic_dec(&mrt->cache_resolve_queue_len);
- while ((skb = skb_dequeue(&c->mfc_un.unres.unresolved)) != NULL) {
+ while ((skb = skb_dequeue(&c->_c.mfc_un.unres.unresolved)) != NULL) {
if (ipv6_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = skb_pull(skb,
sizeof(struct ipv6hdr));
@@ -856,7 +859,7 @@ static void ipmr_do_expire_process(struc
{
unsigned long now = jiffies;
unsigned long expires = 10 * HZ;
- struct mfc6_cache *c, *next;
+ struct mr_mfc *c, *next;
list_for_each_entry_safe(c, next, &mrt->mfc_unres_queue, list) {
if (time_after(c->mfc_un.unres.expires, now)) {
@@ -868,8 +871,8 @@ static void ipmr_do_expire_process(struc
}
list_del(&c->list);
- mr6_netlink_event(mrt, c, RTM_DELROUTE);
- ip6mr_destroy_unres(mrt, c);
+ mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE);
+ ip6mr_destroy_unres(mrt, (struct mfc6_cache *)c);
}
if (!list_empty(&mrt->mfc_unres_queue))
@@ -894,7 +897,7 @@ static void ipmr_expire_process(unsigned
/* Fill oifs list. It is called under write locked mrt_lock. */
static void ip6mr_update_thresholds(struct mr_table *mrt,
- struct mfc6_cache *cache,
+ struct mr_mfc *cache,
unsigned char *ttls)
{
int vifi;
@@ -998,11 +1001,11 @@ static struct mfc6_cache *ip6mr_cache_fi
.mf6c_mcastgrp = *mcastgrp,
};
struct rhlist_head *tmp, *list;
- struct mfc6_cache *c;
+ struct mr_mfc *c;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode)
- return c;
+ return (struct mfc6_cache *)c;
return NULL;
}
@@ -1016,12 +1019,12 @@ static struct mfc6_cache *ip6mr_cache_fi
.mf6c_mcastgrp = in6addr_any,
};
struct rhlist_head *tmp, *list;
- struct mfc6_cache *c;
+ struct mr_mfc *c;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode)
if (c->mfc_un.res.ttls[mifi] < 255)
- return c;
+ return (struct mfc6_cache *)c;
return NULL;
}
@@ -1036,7 +1039,8 @@ static struct mfc6_cache *ip6mr_cache_fi
.mf6c_mcastgrp = *mcastgrp,
};
struct rhlist_head *tmp, *list;
- struct mfc6_cache *c, *proxy;
+ struct mr_mfc *c;
+ struct mfc6_cache *proxy;
if (ipv6_addr_any(mcastgrp))
goto skip;
@@ -1044,12 +1048,12 @@ static struct mfc6_cache *ip6mr_cache_fi
list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode) {
if (c->mfc_un.res.ttls[mifi] < 255)
- return c;
+ return (struct mfc6_cache *)c;
/* It's ok if the mifi is part of the static tree */
- proxy = ip6mr_cache_find_any_parent(mrt, c->mf6c_parent);
- if (proxy && proxy->mfc_un.res.ttls[mifi] < 255)
- return c;
+ proxy = ip6mr_cache_find_any_parent(mrt, c->mfc_parent);
+ if (proxy && proxy->_c.mfc_un.res.ttls[mifi] < 255)
+ return (struct mfc6_cache *)c;
}
skip:
@@ -1068,12 +1072,12 @@ ip6mr_cache_find_parent(struct mr_table
.mf6c_mcastgrp = *mcastgrp,
};
struct rhlist_head *tmp, *list;
- struct mfc6_cache *c;
+ struct mr_mfc *c;
list = rhltable_lookup(&mrt->mfc_hash, &arg, ip6mr_rht_params);
rhl_for_each_entry_rcu(c, tmp, list, mnode)
- if (parent == -1 || parent == c->mf6c_parent)
- return c;
+ if (parent == -1 || parent == c->mfc_parent)
+ return (struct mfc6_cache *)c;
return NULL;
}
@@ -1086,8 +1090,8 @@ static struct mfc6_cache *ip6mr_cache_al
struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
if (!c)
return NULL;
- c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
- c->mfc_un.res.minvif = MAXMIFS;
+ c->_c.mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
+ c->_c.mfc_un.res.minvif = MAXMIFS;
return c;
}
@@ -1096,8 +1100,8 @@ static struct mfc6_cache *ip6mr_cache_al
struct mfc6_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_ATOMIC);
if (!c)
return NULL;
- skb_queue_head_init(&c->mfc_un.unres.unresolved);
- c->mfc_un.unres.expires = jiffies + 10 * HZ;
+ skb_queue_head_init(&c->_c.mfc_un.unres.unresolved);
+ c->_c.mfc_un.unres.expires = jiffies + 10 * HZ;
return c;
}
@@ -1114,7 +1118,7 @@ static void ip6mr_cache_resolve(struct n
* Play the pending entries through our router
*/
- while ((skb = __skb_dequeue(&uc->mfc_un.unres.unresolved))) {
+ while ((skb = __skb_dequeue(&uc->_c.mfc_un.unres.unresolved))) {
if (ipv6_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = skb_pull(skb,
sizeof(struct ipv6hdr));
@@ -1232,19 +1236,16 @@ static int ip6mr_cache_report(struct mr_
return ret;
}
-/*
- * Queue a packet for resolution. It gets locked cache entry!
- */
-
-static int
-ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi, struct sk_buff *skb)
+/* Queue a packet for resolution. It gets locked cache entry! */
+static int ip6mr_cache_unresolved(struct mr_table *mrt, mifi_t mifi,
+ struct sk_buff *skb)
{
+ struct mfc6_cache *c;
bool found = false;
int err;
- struct mfc6_cache *c;
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry(c, &mrt->mfc_unres_queue, list) {
+ list_for_each_entry(c, &mrt->mfc_unres_queue, _c.list) {
if (ipv6_addr_equal(&c->mf6c_mcastgrp, &ipv6_hdr(skb)->daddr) &&
ipv6_addr_equal(&c->mf6c_origin, &ipv6_hdr(skb)->saddr)) {
found = true;
@@ -1265,10 +1266,8 @@ ip6mr_cache_unresolved(struct mr_table *
return -ENOBUFS;
}
- /*
- * Fill in the new cache entry
- */
- c->mf6c_parent = -1;
+ /* Fill in the new cache entry */
+ c->_c.mfc_parent = -1;
c->mf6c_origin = ipv6_hdr(skb)->saddr;
c->mf6c_mcastgrp = ipv6_hdr(skb)->daddr;
@@ -1288,20 +1287,18 @@ ip6mr_cache_unresolved(struct mr_table *
}
atomic_inc(&mrt->cache_resolve_queue_len);
- list_add(&c->list, &mrt->mfc_unres_queue);
+ list_add(&c->_c.list, &mrt->mfc_unres_queue);
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
ipmr_do_expire_process(mrt);
}
- /*
- * See if we can append the packet
- */
- if (c->mfc_un.unres.unresolved.qlen > 3) {
+ /* See if we can append the packet */
+ if (c->_c.mfc_un.unres.unresolved.qlen > 3) {
kfree_skb(skb);
err = -ENOBUFS;
} else {
- skb_queue_tail(&c->mfc_un.unres.unresolved, skb);
+ skb_queue_tail(&c->_c.mfc_un.unres.unresolved, skb);
err = 0;
}
@@ -1325,8 +1322,8 @@ static int ip6mr_mfc_delete(struct mr_ta
rcu_read_unlock();
if (!c)
return -ENOENT;
- rhltable_remove(&mrt->mfc_hash, &c->mnode, ip6mr_rht_params);
- list_del_rcu(&c->list);
+ rhltable_remove(&mrt->mfc_hash, &c->_c.mnode, ip6mr_rht_params);
+ list_del_rcu(&c->_c.list);
mr6_netlink_event(mrt, c, RTM_DELROUTE);
ip6mr_cache_free(c);
@@ -1461,6 +1458,7 @@ static int ip6mr_mfc_add(struct net *net
{
unsigned char ttls[MAXMIFS];
struct mfc6_cache *uc, *c;
+ struct mr_mfc *_uc;
bool found;
int i, err;
@@ -1480,10 +1478,10 @@ static int ip6mr_mfc_add(struct net *net
rcu_read_unlock();
if (c) {
write_lock_bh(&mrt_lock);
- c->mf6c_parent = mfc->mf6cc_parent;
- ip6mr_update_thresholds(mrt, c, ttls);
+ c->_c.mfc_parent = mfc->mf6cc_parent;
+ ip6mr_update_thresholds(mrt, &c->_c, ttls);
if (!mrtsock)
- c->mfc_flags |= MFC_STATIC;
+ c->_c.mfc_flags |= MFC_STATIC;
write_unlock_bh(&mrt_lock);
mr6_netlink_event(mrt, c, RTM_NEWROUTE);
return 0;
@@ -1499,29 +1497,30 @@ static int ip6mr_mfc_add(struct net *net
c->mf6c_origin = mfc->mf6cc_origin.sin6_addr;
c->mf6c_mcastgrp = mfc->mf6cc_mcastgrp.sin6_addr;
- c->mf6c_parent = mfc->mf6cc_parent;
- ip6mr_update_thresholds(mrt, c, ttls);
+ c->_c.mfc_parent = mfc->mf6cc_parent;
+ ip6mr_update_thresholds(mrt, &c->_c, ttls);
if (!mrtsock)
- c->mfc_flags |= MFC_STATIC;
+ c->_c.mfc_flags |= MFC_STATIC;
- err = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->mnode,
+ err = rhltable_insert_key(&mrt->mfc_hash, &c->cmparg, &c->_c.mnode,
ip6mr_rht_params);
if (err) {
pr_err("ip6mr: rhtable insert error %d\n", err);
ip6mr_cache_free(c);
return err;
}
- list_add_tail_rcu(&c->list, &mrt->mfc_cache_list);
+ list_add_tail_rcu(&c->_c.list, &mrt->mfc_cache_list);
/* Check to see if we resolved a queued list. If so we
* need to send on the frames and tidy up.
*/
found = false;
spin_lock_bh(&mfc_unres_lock);
- list_for_each_entry(uc, &mrt->mfc_unres_queue, list) {
+ list_for_each_entry(_uc, &mrt->mfc_unres_queue, list) {
+ uc = (struct mfc6_cache *)_uc;
if (ipv6_addr_equal(&uc->mf6c_origin, &c->mf6c_origin) &&
ipv6_addr_equal(&uc->mf6c_mcastgrp, &c->mf6c_mcastgrp)) {
- list_del(&uc->list);
+ list_del(&_uc->list);
atomic_dec(&mrt->cache_resolve_queue_len);
found = true;
break;
@@ -1545,7 +1544,7 @@ static int ip6mr_mfc_add(struct net *net
static void mroute_clean_tables(struct mr_table *mrt, bool all)
{
- struct mfc6_cache *c, *tmp;
+ struct mr_mfc *c, *tmp;
LIST_HEAD(list);
int i;
@@ -1563,16 +1562,17 @@ static void mroute_clean_tables(struct m
continue;
rhltable_remove(&mrt->mfc_hash, &c->mnode, ip6mr_rht_params);
list_del_rcu(&c->list);
- mr6_netlink_event(mrt, c, RTM_DELROUTE);
- ip6mr_cache_free(c);
+ mr6_netlink_event(mrt, (struct mfc6_cache *)c, RTM_DELROUTE);
+ ip6mr_cache_free((struct mfc6_cache *)c);
}
if (atomic_read(&mrt->cache_resolve_queue_len) != 0) {
spin_lock_bh(&mfc_unres_lock);
list_for_each_entry_safe(c, tmp, &mrt->mfc_unres_queue, list) {
list_del(&c->list);
- mr6_netlink_event(mrt, c, RTM_DELROUTE);
- ip6mr_destroy_unres(mrt, c);
+ mr6_netlink_event(mrt, (struct mfc6_cache *)c,
+ RTM_DELROUTE);
+ ip6mr_destroy_unres(mrt, (struct mfc6_cache *)c);
}
spin_unlock_bh(&mfc_unres_lock);
}
@@ -1901,9 +1901,9 @@ int ip6mr_ioctl(struct sock *sk, int cmd
rcu_read_lock();
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
- sr.pktcnt = c->mfc_un.res.pkt;
- sr.bytecnt = c->mfc_un.res.bytes;
- sr.wrong_if = c->mfc_un.res.wrong_if;
+ sr.pktcnt = c->_c.mfc_un.res.pkt;
+ sr.bytecnt = c->_c.mfc_un.res.bytes;
+ sr.wrong_if = c->_c.mfc_un.res.wrong_if;
rcu_read_unlock();
if (copy_to_user(arg, &sr, sizeof(sr)))
@@ -1975,9 +1975,9 @@ int ip6mr_compat_ioctl(struct sock *sk,
rcu_read_lock();
c = ip6mr_cache_find(mrt, &sr.src.sin6_addr, &sr.grp.sin6_addr);
if (c) {
- sr.pktcnt = c->mfc_un.res.pkt;
- sr.bytecnt = c->mfc_un.res.bytes;
- sr.wrong_if = c->mfc_un.res.wrong_if;
+ sr.pktcnt = c->_c.mfc_un.res.pkt;
+ sr.bytecnt = c->_c.mfc_un.res.bytes;
+ sr.wrong_if = c->_c.mfc_un.res.wrong_if;
rcu_read_unlock();
if (copy_to_user(arg, &sr, sizeof(sr)))
@@ -2091,18 +2091,18 @@ static int ip6mr_find_vif(struct mr_tabl
}
static void ip6_mr_forward(struct net *net, struct mr_table *mrt,
- struct sk_buff *skb, struct mfc6_cache *cache)
+ struct sk_buff *skb, struct mfc6_cache *c)
{
int psend = -1;
int vif, ct;
int true_vifi = ip6mr_find_vif(mrt, skb->dev);
- vif = cache->mf6c_parent;
- cache->mfc_un.res.pkt++;
- cache->mfc_un.res.bytes += skb->len;
- cache->mfc_un.res.lastuse = jiffies;
+ vif = c->_c.mfc_parent;
+ c->_c.mfc_un.res.pkt++;
+ c->_c.mfc_un.res.bytes += skb->len;
+ c->_c.mfc_un.res.lastuse = jiffies;
- if (ipv6_addr_any(&cache->mf6c_origin) && true_vifi >= 0) {
+ if (ipv6_addr_any(&c->mf6c_origin) && true_vifi >= 0) {
struct mfc6_cache *cache_proxy;
/* For an (*,G) entry, we only check that the incoming
@@ -2111,7 +2111,7 @@ static void ip6_mr_forward(struct net *n
rcu_read_lock();
cache_proxy = ip6mr_cache_find_any_parent(mrt, vif);
if (cache_proxy &&
- cache_proxy->mfc_un.res.ttls[true_vifi] < 255) {
+ cache_proxy->_c.mfc_un.res.ttls[true_vifi] < 255) {
rcu_read_unlock();
goto forward;
}
@@ -2122,7 +2122,7 @@ static void ip6_mr_forward(struct net *n
* Wrong interface: drop packet and (maybe) send PIM assert.
*/
if (mrt->vif_table[vif].dev != skb->dev) {
- cache->mfc_un.res.wrong_if++;
+ c->_c.mfc_un.res.wrong_if++;
if (true_vifi >= 0 && mrt->mroute_do_assert &&
/* pimsm uses asserts, when switching from RPT to SPT,
@@ -2131,10 +2131,11 @@ static void ip6_mr_forward(struct net *n
large chunk of pimd to kernel. Ough... --ANK
*/
(mrt->mroute_do_pim ||
- cache->mfc_un.res.ttls[true_vifi] < 255) &&
+ c->_c.mfc_un.res.ttls[true_vifi] < 255) &&
time_after(jiffies,
- cache->mfc_un.res.last_assert + MFC_ASSERT_THRESH)) {
- cache->mfc_un.res.last_assert = jiffies;
+ c->_c.mfc_un.res.last_assert +
+ MFC_ASSERT_THRESH)) {
+ c->_c.mfc_un.res.last_assert = jiffies;
ip6mr_cache_report(mrt, skb, true_vifi, MRT6MSG_WRONGMIF);
}
goto dont_forward;
@@ -2147,36 +2148,38 @@ forward:
/*
* Forward the frame
*/
- if (ipv6_addr_any(&cache->mf6c_origin) &&
- ipv6_addr_any(&cache->mf6c_mcastgrp)) {
+ if (ipv6_addr_any(&c->mf6c_origin) &&
+ ipv6_addr_any(&c->mf6c_mcastgrp)) {
if (true_vifi >= 0 &&
- true_vifi != cache->mf6c_parent &&
+ true_vifi != c->_c.mfc_parent &&
ipv6_hdr(skb)->hop_limit >
- cache->mfc_un.res.ttls[cache->mf6c_parent]) {
+ c->_c.mfc_un.res.ttls[c->_c.mfc_parent]) {
/* It's an (*,*) entry and the packet is not coming from
* the upstream: forward the packet to the upstream
* only.
*/
- psend = cache->mf6c_parent;
+ psend = c->_c.mfc_parent;
goto last_forward;
}
goto dont_forward;
}
- for (ct = cache->mfc_un.res.maxvif - 1; ct >= cache->mfc_un.res.minvif; ct--) {
+ for (ct = c->_c.mfc_un.res.maxvif - 1;
+ ct >= c->_c.mfc_un.res.minvif; ct--) {
/* For (*,G) entry, don't forward to the incoming interface */
- if ((!ipv6_addr_any(&cache->mf6c_origin) || ct != true_vifi) &&
- ipv6_hdr(skb)->hop_limit > cache->mfc_un.res.ttls[ct]) {
+ if ((!ipv6_addr_any(&c->mf6c_origin) || ct != true_vifi) &&
+ ipv6_hdr(skb)->hop_limit > c->_c.mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
- ip6mr_forward2(net, mrt, skb2, cache, psend);
+ ip6mr_forward2(net, mrt, skb2,
+ c, psend);
}
psend = ct;
}
}
last_forward:
if (psend != -1) {
- ip6mr_forward2(net, mrt, skb, cache, psend);
+ ip6mr_forward2(net, mrt, skb, c, psend);
return;
}
@@ -2254,21 +2257,22 @@ static int __ip6mr_fill_mroute(struct mr
int ct;
/* If cache is unresolved, don't try to parse IIF and OIF */
- if (c->mf6c_parent >= MAXMIFS) {
+ if (c->_c.mfc_parent >= MAXMIFS) {
rtm->rtm_flags |= RTNH_F_UNRESOLVED;
return -ENOENT;
}
- if (VIF_EXISTS(mrt, c->mf6c_parent) &&
+ if (VIF_EXISTS(mrt, c->_c.mfc_parent) &&
nla_put_u32(skb, RTA_IIF,
- mrt->vif_table[c->mf6c_parent].dev->ifindex) < 0)
+ mrt->vif_table[c->_c.mfc_parent].dev->ifindex) < 0)
return -EMSGSIZE;
mp_attr = nla_nest_start(skb, RTA_MULTIPATH);
if (!mp_attr)
return -EMSGSIZE;
- for (ct = c->mfc_un.res.minvif; ct < c->mfc_un.res.maxvif; ct++) {
- if (VIF_EXISTS(mrt, ct) && c->mfc_un.res.ttls[ct] < 255) {
+ for (ct = c->_c.mfc_un.res.minvif;
+ ct < c->_c.mfc_un.res.maxvif; ct++) {
+ if (VIF_EXISTS(mrt, ct) && c->_c.mfc_un.res.ttls[ct] < 255) {
nhp = nla_reserve_nohdr(skb, sizeof(*nhp));
if (!nhp) {
nla_nest_cancel(skb, mp_attr);
@@ -2276,7 +2280,7 @@ static int __ip6mr_fill_mroute(struct mr
}
nhp->rtnh_flags = 0;
- nhp->rtnh_hops = c->mfc_un.res.ttls[ct];
+ nhp->rtnh_hops = c->_c.mfc_un.res.ttls[ct];
nhp->rtnh_ifindex = mrt->vif_table[ct].dev->ifindex;
nhp->rtnh_len = sizeof(*nhp);
}
@@ -2284,12 +2288,12 @@ static int __ip6mr_fill_mroute(struct mr
nla_nest_end(skb, mp_attr);
- lastuse = READ_ONCE(c->mfc_un.res.lastuse);
+ lastuse = READ_ONCE(c->_c.mfc_un.res.lastuse);
lastuse = time_after_eq(jiffies, lastuse) ? jiffies - lastuse : 0;
- mfcs.mfcs_packets = c->mfc_un.res.pkt;
- mfcs.mfcs_bytes = c->mfc_un.res.bytes;
- mfcs.mfcs_wrong_if = c->mfc_un.res.wrong_if;
+ mfcs.mfcs_packets = c->_c.mfc_un.res.pkt;
+ mfcs.mfcs_bytes = c->_c.mfc_un.res.bytes;
+ mfcs.mfcs_wrong_if = c->_c.mfc_un.res.wrong_if;
if (nla_put_64bit(skb, RTA_MFC_STATS, sizeof(mfcs), &mfcs, RTA_PAD) ||
nla_put_u64_64bit(skb, RTA_EXPIRES, jiffies_to_clock_t(lastuse),
RTA_PAD))
@@ -2365,7 +2369,7 @@ int ip6mr_get_route(struct net *net, str
}
if (rtm->rtm_flags & RTM_F_NOTIFY)
- cache->mfc_flags |= MFC_NOTIFY;
+ cache->_c.mfc_flags |= MFC_NOTIFY;
err = __ip6mr_fill_mroute(mrt, skb, cache, rtm);
read_unlock(&mrt_lock);
@@ -2394,7 +2398,7 @@ static int ip6mr_fill_mroute(struct mr_t
goto nla_put_failure;
rtm->rtm_type = RTN_MULTICAST;
rtm->rtm_scope = RT_SCOPE_UNIVERSE;
- if (c->mfc_flags & MFC_STATIC)
+ if (c->_c.mfc_flags & MFC_STATIC)
rtm->rtm_protocol = RTPROT_STATIC;
else
rtm->rtm_protocol = RTPROT_MROUTED;
@@ -2444,7 +2448,7 @@ static void mr6_netlink_event(struct mr_
struct sk_buff *skb;
int err = -ENOBUFS;
- skb = nlmsg_new(mr6_msgsize(mfc->mf6c_parent >= MAXMIFS, mrt->maxvif),
+ skb = nlmsg_new(mr6_msgsize(mfc->_c.mfc_parent >= MAXMIFS, mrt->maxvif),
GFP_ATOMIC);
if (!skb)
goto errout;
@@ -2465,10 +2469,10 @@ errout:
static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
- struct mr_table *mrt;
- struct mfc6_cache *mfc;
unsigned int t = 0, s_t;
unsigned int e = 0, s_e;
+ struct mr_table *mrt;
+ struct mr_mfc *mfc;
s_t = cb->args[0];
s_e = cb->args[1];
@@ -2483,8 +2487,8 @@ static int ip6mr_rtm_dumproute(struct sk
if (ip6mr_fill_mroute(mrt, skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
- mfc, RTM_NEWROUTE,
- NLM_F_MULTI) < 0)
+ (struct mfc6_cache *)mfc,
+ RTM_NEWROUTE, NLM_F_MULTI) < 0)
goto done;
next_entry:
e++;
@@ -2499,8 +2503,8 @@ next_entry:
if (ip6mr_fill_mroute(mrt, skb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
- mfc, RTM_NEWROUTE,
- NLM_F_MULTI) < 0) {
+ (struct mfc6_cache *)mfc,
+ RTM_NEWROUTE, NLM_F_MULTI) < 0) {
spin_unlock_bh(&mfc_unres_lock);
goto done;
}