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Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NET]: Fix MAX_HEADER setting.
  [NETFILTER]: ipt_REJECT: fix memory corruption
  [NETFILTER]: conntrack: fix refcount leak when finding expectation
  [NETFILTER]: ctnetlink: fix reference count leak
  [NETFILTER]: nf_conntrack: fix the race on assign helper to new conntrack
  [NETFILTER]: nfctnetlink: assign helper to newly created conntrack
This commit is contained in:
Linus Torvalds 2006-11-28 21:28:14 -08:00
commit 1275361c40
6 changed files with 35 additions and 22 deletions
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6
include/linux/netdevice.h
View File

@ -93,8 +93,10 @@ struct netpoll_info;
#endif
#endif
#if !defined(CONFIG_NET_IPIP) && \
!defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
!defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
!defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
!defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
#define MAX_HEADER LL_MAX_HEADER
#else
#define MAX_HEADER (LL_MAX_HEADER + 48)

6
net/ipv4/netfilter/ip_conntrack_core.c
View File

@ -225,10 +225,8 @@ __ip_conntrack_expect_find(const struct ip_conntrack_tuple *tuple)
struct ip_conntrack_expect *i;
list_for_each_entry(i, &ip_conntrack_expect_list, list) {
if (ip_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask)) {
atomic_inc(&i->use);
if (ip_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask))
return i;
}
}
return NULL;
}
@ -241,6 +239,8 @@ ip_conntrack_expect_find(const struct ip_conntrack_tuple *tuple)
read_lock_bh(&ip_conntrack_lock);
i = __ip_conntrack_expect_find(tuple);
if (i)
atomic_inc(&i->use);
read_unlock_bh(&ip_conntrack_lock);
return i;

1
net/ipv4/netfilter/ip_conntrack_netlink.c
View File

@ -153,6 +153,7 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct ip_conntrack *ct)
return ret;
nfattr_failure:
ip_conntrack_proto_put(proto);
return -1;
}

16
net/ipv4/netfilter/ipt_REJECT.c
View File

@ -114,6 +114,14 @@ static void send_reset(struct sk_buff *oldskb, int hook)
tcph->window = 0;
tcph->urg_ptr = 0;
/* Adjust TCP checksum */
tcph->check = 0;
tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
nskb->nh.iph->saddr,
nskb->nh.iph->daddr,
csum_partial((char *)tcph,
sizeof(struct tcphdr), 0));
/* Set DF, id = 0 */
nskb->nh.iph->frag_off = htons(IP_DF);
nskb->nh.iph->id = 0;
@ -129,14 +137,8 @@ static void send_reset(struct sk_buff *oldskb, int hook)
if (ip_route_me_harder(&nskb, addr_type))
goto free_nskb;
/* Adjust TCP checksum */
nskb->ip_summed = CHECKSUM_NONE;
tcph->check = 0;
tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
nskb->nh.iph->saddr,
nskb->nh.iph->daddr,
csum_partial((char *)tcph,
sizeof(struct tcphdr), 0));
/* Adjust IP TTL */
nskb->nh.iph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);

19
net/netfilter/nf_conntrack_core.c
View File

@ -469,10 +469,8 @@ __nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple)
struct nf_conntrack_expect *i;
list_for_each_entry(i, &nf_conntrack_expect_list, list) {
if (nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask)) {
atomic_inc(&i->use);
if (nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask))
return i;
}
}
return NULL;
}
@ -485,6 +483,8 @@ nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple)
read_lock_bh(&nf_conntrack_lock);
i = __nf_conntrack_expect_find(tuple);
if (i)
atomic_inc(&i->use);
read_unlock_bh(&nf_conntrack_lock);
return i;
@ -893,12 +893,6 @@ __nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
memset(conntrack, 0, nf_ct_cache[features].size);
conntrack->features = features;
if (helper) {
struct nf_conn_help *help = nfct_help(conntrack);
NF_CT_ASSERT(help);
help->helper = helper;
}
atomic_set(&conntrack->ct_general.use, 1);
conntrack->ct_general.destroy = destroy_conntrack;
conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
@ -982,8 +976,13 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
#endif
nf_conntrack_get(&conntrack->master->ct_general);
NF_CT_STAT_INC(expect_new);
} else
} else {
struct nf_conn_help *help = nfct_help(conntrack);
if (help)
help->helper = __nf_ct_helper_find(&repl_tuple);
NF_CT_STAT_INC(new);
}
/* Overload tuple linked list to put us in unconfirmed list. */
list_add(&conntrack->tuplehash[IP_CT_DIR_ORIGINAL].list, &unconfirmed);

9
net/netfilter/nf_conntrack_netlink.c
View File

@ -161,6 +161,7 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
return ret;
nfattr_failure:
nf_ct_proto_put(proto);
return -1;
}
@ -949,6 +950,7 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
{
struct nf_conn *ct;
int err = -EINVAL;
struct nf_conn_help *help;
ct = nf_conntrack_alloc(otuple, rtuple);
if (ct == NULL || IS_ERR(ct))
@ -976,9 +978,16 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
ct->mark = ntohl(*(u_int32_t *)NFA_DATA(cda[CTA_MARK-1]));
#endif
help = nfct_help(ct);
if (help)
help->helper = nf_ct_helper_find_get(rtuple);
add_timer(&ct->timeout);
nf_conntrack_hash_insert(ct);
if (help && help->helper)
nf_ct_helper_put(help->helper);
return 0;
err: