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authorLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:39:20 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:39:20 -0800
commitb55813a2e50088ca30df33fa62aeed5d3adb1796 (patch)
treebe50fe404e94869fe854766e190a5753dbc7dd49 /net
parent368d17e068f691dba5a4f122c271db5ec9b2ebd6 (diff)
parent9e19bb6d7a0959f5028d46e1ab99c50f0d36eda8 (diff)
downloadlinux-sh-b55813a2e50088ca30df33fa62aeed5d3adb1796.tar.gz
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NETFILTER] x_table.c: sem2mutex [IPV4]: Aggregate route entries with different TOS values [TCP]: Mark tcp_*mem[] __read_mostly. [TCP]: Set default max buffers from memory pool size [SCTP]: Fix up sctp_rcv return value [NET]: Take RTNL when unregistering notifier [WIRELESS]: Fix config dependencies. [NET]: Fill in a 32-bit hole in struct sock on 64-bit platforms. [NET]: Ensure device name passed to SO_BINDTODEVICE is NULL terminated. [MODULES]: Don't allow statically declared exports [BRIDGE]: Unaligned accesses in the ethernet bridge
Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_stp_bpdu.c5
-rw-r--r--net/core/dev.c7
-rw-r--r--net/core/sock.c5
-rw-r--r--net/ipv4/icmp.c2
-rw-r--r--net/ipv4/route.c45
-rw-r--r--net/ipv4/tcp.c26
-rw-r--r--net/netfilter/x_tables.c56
-rw-r--r--net/sctp/input.c12
8 files changed, 80 insertions, 78 deletions
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 8934a54792be..a7ba0cce0b46 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -19,6 +19,7 @@
#include <linux/llc.h>
#include <net/llc.h>
#include <net/llc_pdu.h>
+#include <asm/unaligned.h>
#include "br_private.h"
#include "br_private_stp.h"
@@ -59,12 +60,12 @@ static inline void br_set_ticks(unsigned char *dest, int j)
{
unsigned long ticks = (STP_HZ * j)/ HZ;
- *((__be16 *) dest) = htons(ticks);
+ put_unaligned(htons(ticks), (__be16 *)dest);
}
static inline int br_get_ticks(const unsigned char *src)
{
- unsigned long ticks = ntohs(*(__be16 *)src);
+ unsigned long ticks = ntohs(get_unaligned((__be16 *)src));
return (ticks * HZ + STP_HZ - 1) / STP_HZ;
}
diff --git a/net/core/dev.c b/net/core/dev.c
index 08dec6eb922b..e0489ca731c5 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -977,7 +977,12 @@ int register_netdevice_notifier(struct notifier_block *nb)
int unregister_netdevice_notifier(struct notifier_block *nb)
{
- return notifier_chain_unregister(&netdev_chain, nb);
+ int err;
+
+ rtnl_lock();
+ err = notifier_chain_unregister(&netdev_chain, nb);
+ rtnl_unlock();
+ return err;
}
/**
diff --git a/net/core/sock.c b/net/core/sock.c
index 1a7e6eac90b0..e110b9004147 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -404,8 +404,9 @@ set_rcvbuf:
if (!valbool) {
sk->sk_bound_dev_if = 0;
} else {
- if (optlen > IFNAMSIZ)
- optlen = IFNAMSIZ;
+ if (optlen > IFNAMSIZ - 1)
+ optlen = IFNAMSIZ - 1;
+ memset(devname, 0, sizeof(devname));
if (copy_from_user(devname, optval, optlen)) {
ret = -EFAULT;
break;
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index e7bbff4340bb..9831fd2c73a0 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -753,7 +753,7 @@ static void icmp_redirect(struct sk_buff *skb)
case ICMP_REDIR_HOST:
case ICMP_REDIR_HOSTTOS:
ip_rt_redirect(skb->nh.iph->saddr, ip, skb->h.icmph->un.gateway,
- iph->saddr, iph->tos, skb->dev);
+ iph->saddr, skb->dev);
break;
}
out:
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index fca5fe0cf94a..94fcbc5e5a1b 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -55,6 +55,8 @@
* Robert Olsson : Added rt_cache statistics
* Arnaldo C. Melo : Convert proc stuff to seq_file
* Eric Dumazet : hashed spinlocks and rt_check_expire() fixes.
+ * Ilia Sotnikov : Ignore TOS on PMTUD and Redirect
+ * Ilia Sotnikov : Removed TOS from hash calculations
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -247,9 +249,9 @@ static DEFINE_PER_CPU(struct rt_cache_stat, rt_cache_stat);
static int rt_intern_hash(unsigned hash, struct rtable *rth,
struct rtable **res);
-static unsigned int rt_hash_code(u32 daddr, u32 saddr, u8 tos)
+static unsigned int rt_hash_code(u32 daddr, u32 saddr)
{
- return (jhash_3words(daddr, saddr, (u32) tos, rt_hash_rnd)
+ return (jhash_2words(daddr, saddr, rt_hash_rnd)
& rt_hash_mask);
}
@@ -1111,7 +1113,7 @@ static void rt_del(unsigned hash, struct rtable *rt)
}
void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
- u32 saddr, u8 tos, struct net_device *dev)
+ u32 saddr, struct net_device *dev)
{
int i, k;
struct in_device *in_dev = in_dev_get(dev);
@@ -1119,8 +1121,6 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
u32 skeys[2] = { saddr, 0 };
int ikeys[2] = { dev->ifindex, 0 };
- tos &= IPTOS_RT_MASK;
-
if (!in_dev)
return;
@@ -1141,8 +1141,7 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
for (i = 0; i < 2; i++) {
for (k = 0; k < 2; k++) {
unsigned hash = rt_hash_code(daddr,
- skeys[i] ^ (ikeys[k] << 5),
- tos);
+ skeys[i] ^ (ikeys[k] << 5));
rthp=&rt_hash_table[hash].chain;
@@ -1152,7 +1151,6 @@ void ip_rt_redirect(u32 old_gw, u32 daddr, u32 new_gw,
if (rth->fl.fl4_dst != daddr ||
rth->fl.fl4_src != skeys[i] ||
- rth->fl.fl4_tos != tos ||
rth->fl.oif != ikeys[k] ||
rth->fl.iif != 0) {
rthp = &rth->u.rt_next;
@@ -1232,10 +1230,9 @@ reject_redirect:
if (IN_DEV_LOG_MARTIANS(in_dev) && net_ratelimit())
printk(KERN_INFO "Redirect from %u.%u.%u.%u on %s about "
"%u.%u.%u.%u ignored.\n"
- " Advised path = %u.%u.%u.%u -> %u.%u.%u.%u, "
- "tos %02x\n",
+ " Advised path = %u.%u.%u.%u -> %u.%u.%u.%u\n",
NIPQUAD(old_gw), dev->name, NIPQUAD(new_gw),
- NIPQUAD(saddr), NIPQUAD(daddr), tos);
+ NIPQUAD(saddr), NIPQUAD(daddr));
#endif
in_dev_put(in_dev);
}
@@ -1253,8 +1250,7 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst)
rt->u.dst.expires) {
unsigned hash = rt_hash_code(rt->fl.fl4_dst,
rt->fl.fl4_src ^
- (rt->fl.oif << 5),
- rt->fl.fl4_tos);
+ (rt->fl.oif << 5));
#if RT_CACHE_DEBUG >= 1
printk(KERN_DEBUG "ip_rt_advice: redirect to "
"%u.%u.%u.%u/%02x dropped\n",
@@ -1391,14 +1387,13 @@ unsigned short ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu)
struct rtable *rth;
u32 skeys[2] = { iph->saddr, 0, };
u32 daddr = iph->daddr;
- u8 tos = iph->tos & IPTOS_RT_MASK;
unsigned short est_mtu = 0;
if (ipv4_config.no_pmtu_disc)
return 0;
for (i = 0; i < 2; i++) {
- unsigned hash = rt_hash_code(daddr, skeys[i], tos);
+ unsigned hash = rt_hash_code(daddr, skeys[i]);
rcu_read_lock();
for (rth = rcu_dereference(rt_hash_table[hash].chain); rth;
@@ -1407,7 +1402,6 @@ unsigned short ip_rt_frag_needed(struct iphdr *iph, unsigned short new_mtu)
rth->fl.fl4_src == skeys[i] &&
rth->rt_dst == daddr &&
rth->rt_src == iph->saddr &&
- rth->fl.fl4_tos == tos &&
rth->fl.iif == 0 &&
!(dst_metric_locked(&rth->u.dst, RTAX_MTU))) {
unsigned short mtu = new_mtu;
@@ -1658,7 +1652,7 @@ static int ip_route_input_mc(struct sk_buff *skb, u32 daddr, u32 saddr,
RT_CACHE_STAT_INC(in_slow_mc);
in_dev_put(in_dev);
- hash = rt_hash_code(daddr, saddr ^ (dev->ifindex << 5), tos);
+ hash = rt_hash_code(daddr, saddr ^ (dev->ifindex << 5));
return rt_intern_hash(hash, rth, (struct rtable**) &skb->dst);
e_nobufs:
@@ -1823,7 +1817,7 @@ static inline int ip_mkroute_input_def(struct sk_buff *skb,
return err;
/* put it into the cache */
- hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5), tos);
+ hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5));
return rt_intern_hash(hash, rth, (struct rtable**)&skb->dst);
}
@@ -1864,7 +1858,7 @@ static inline int ip_mkroute_input(struct sk_buff *skb,
return err;
/* put it into the cache */
- hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5), tos);
+ hash = rt_hash_code(daddr, saddr ^ (fl->iif << 5));
err = rt_intern_hash(hash, rth, &rtres);
if (err)
return err;
@@ -2041,7 +2035,7 @@ local_input:
rth->rt_flags &= ~RTCF_LOCAL;
}
rth->rt_type = res.type;
- hash = rt_hash_code(daddr, saddr ^ (fl.iif << 5), tos);
+ hash = rt_hash_code(daddr, saddr ^ (fl.iif << 5));
err = rt_intern_hash(hash, rth, (struct rtable**)&skb->dst);
goto done;
@@ -2088,7 +2082,7 @@ int ip_route_input(struct sk_buff *skb, u32 daddr, u32 saddr,
int iif = dev->ifindex;
tos &= IPTOS_RT_MASK;
- hash = rt_hash_code(daddr, saddr ^ (iif << 5), tos);
+ hash = rt_hash_code(daddr, saddr ^ (iif << 5));
rcu_read_lock();
for (rth = rcu_dereference(rt_hash_table[hash].chain); rth;
@@ -2286,10 +2280,8 @@ static inline int ip_mkroute_output_def(struct rtable **rp,
int err = __mkroute_output(&rth, res, fl, oldflp, dev_out, flags);
unsigned hash;
if (err == 0) {
- u32 tos = RT_FL_TOS(oldflp);
-
hash = rt_hash_code(oldflp->fl4_dst,
- oldflp->fl4_src ^ (oldflp->oif << 5), tos);
+ oldflp->fl4_src ^ (oldflp->oif << 5));
err = rt_intern_hash(hash, rth, rp);
}
@@ -2304,7 +2296,6 @@ static inline int ip_mkroute_output(struct rtable** rp,
unsigned flags)
{
#ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED
- u32 tos = RT_FL_TOS(oldflp);
unsigned char hop;
unsigned hash;
int err = -EINVAL;
@@ -2334,7 +2325,7 @@ static inline int ip_mkroute_output(struct rtable** rp,
hash = rt_hash_code(oldflp->fl4_dst,
oldflp->fl4_src ^
- (oldflp->oif << 5), tos);
+ (oldflp->oif << 5));
err = rt_intern_hash(hash, rth, rp);
/* forward hop information to multipath impl. */
@@ -2563,7 +2554,7 @@ int __ip_route_output_key(struct rtable **rp, const struct flowi *flp)
unsigned hash;
struct rtable *rth;
- hash = rt_hash_code(flp->fl4_dst, flp->fl4_src ^ (flp->oif << 5), flp->fl4_tos);
+ hash = rt_hash_code(flp->fl4_dst, flp->fl4_src ^ (flp->oif << 5));
rcu_read_lock_bh();
for (rth = rcu_dereference(rt_hash_table[hash].chain); rth;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 19ea5c0b094b..87f68e787d0c 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -257,6 +257,7 @@
#include <linux/fs.h>
#include <linux/random.h>
#include <linux/bootmem.h>
+#include <linux/cache.h>
#include <net/icmp.h>
#include <net/tcp.h>
@@ -275,9 +276,9 @@ atomic_t tcp_orphan_count = ATOMIC_INIT(0);
EXPORT_SYMBOL_GPL(tcp_orphan_count);
-int sysctl_tcp_mem[3];
-int sysctl_tcp_wmem[3] = { 4 * 1024, 16 * 1024, 128 * 1024 };
-int sysctl_tcp_rmem[3] = { 4 * 1024, 87380, 87380 * 2 };
+int sysctl_tcp_mem[3] __read_mostly;
+int sysctl_tcp_wmem[3] __read_mostly;
+int sysctl_tcp_rmem[3] __read_mostly;
EXPORT_SYMBOL(sysctl_tcp_mem);
EXPORT_SYMBOL(sysctl_tcp_rmem);
@@ -2081,7 +2082,8 @@ __setup("thash_entries=", set_thash_entries);
void __init tcp_init(void)
{
struct sk_buff *skb = NULL;
- int order, i;
+ unsigned long limit;
+ int order, i, max_share;
if (sizeof(struct tcp_skb_cb) > sizeof(skb->cb))
__skb_cb_too_small_for_tcp(sizeof(struct tcp_skb_cb),
@@ -2155,12 +2157,16 @@ void __init tcp_init(void)
sysctl_tcp_mem[1] = 1024 << order;
sysctl_tcp_mem[2] = 1536 << order;
- if (order < 3) {
- sysctl_tcp_wmem[2] = 64 * 1024;
- sysctl_tcp_rmem[0] = PAGE_SIZE;
- sysctl_tcp_rmem[1] = 43689;
- sysctl_tcp_rmem[2] = 2 * 43689;
- }
+ limit = ((unsigned long)sysctl_tcp_mem[1]) << (PAGE_SHIFT - 7);
+ max_share = min(4UL*1024*1024, limit);
+
+ sysctl_tcp_wmem[0] = SK_STREAM_MEM_QUANTUM;
+ sysctl_tcp_wmem[1] = 16*1024;
+ sysctl_tcp_wmem[2] = max(64*1024, max_share);
+
+ sysctl_tcp_rmem[0] = SK_STREAM_MEM_QUANTUM;
+ sysctl_tcp_rmem[1] = 87380;
+ sysctl_tcp_rmem[2] = max(87380, max_share);
printk(KERN_INFO "TCP: Hash tables configured "
"(established %d bind %d)\n",
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 0a29a24d9a72..a657ab5394c3 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -21,10 +21,12 @@
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/vmalloc.h>
+#include <linux/mutex.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_arp.h>
+
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
MODULE_DESCRIPTION("[ip,ip6,arp]_tables backend module");
@@ -32,7 +34,7 @@ MODULE_DESCRIPTION("[ip,ip6,arp]_tables backend module");
#define SMP_ALIGN(x) (((x) + SMP_CACHE_BYTES-1) & ~(SMP_CACHE_BYTES-1))
struct xt_af {
- struct semaphore mutex;
+ struct mutex mutex;
struct list_head match;
struct list_head target;
struct list_head tables;
@@ -64,11 +66,11 @@ xt_register_target(struct xt_target *target)
{
int ret, af = target->family;
- ret = down_interruptible(&xt[af].mutex);
+ ret = mutex_lock_interruptible(&xt[af].mutex);
if (ret != 0)
return ret;
list_add(&target->list, &xt[af].target);
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return ret;
}
EXPORT_SYMBOL(xt_register_target);
@@ -78,9 +80,9 @@ xt_unregister_target(struct xt_target *target)
{
int af = target->family;
- down(&xt[af].mutex);
+ mutex_lock(&xt[af].mutex);
LIST_DELETE(&xt[af].target, target);
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
}
EXPORT_SYMBOL(xt_unregister_target);
@@ -89,12 +91,12 @@ xt_register_match(struct xt_match *match)
{
int ret, af = match->family;
- ret = down_interruptible(&xt[af].mutex);
+ ret = mutex_lock_interruptible(&xt[af].mutex);
if (ret != 0)
return ret;
list_add(&match->list, &xt[af].match);
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return ret;
}
@@ -105,9 +107,9 @@ xt_unregister_match(struct xt_match *match)
{
int af = match->family;
- down(&xt[af].mutex);
+ mutex_lock(&xt[af].mutex);
LIST_DELETE(&xt[af].match, match);
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
}
EXPORT_SYMBOL(xt_unregister_match);
@@ -124,21 +126,21 @@ struct xt_match *xt_find_match(int af, const char *name, u8 revision)
struct xt_match *m;
int err = 0;
- if (down_interruptible(&xt[af].mutex) != 0)
+ if (mutex_lock_interruptible(&xt[af].mutex) != 0)
return ERR_PTR(-EINTR);
list_for_each_entry(m, &xt[af].match, list) {
if (strcmp(m->name, name) == 0) {
if (m->revision == revision) {
if (try_module_get(m->me)) {
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return m;
}
} else
err = -EPROTOTYPE; /* Found something. */
}
}
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return ERR_PTR(err);
}
EXPORT_SYMBOL(xt_find_match);
@@ -149,21 +151,21 @@ struct xt_target *xt_find_target(int af, const char *name, u8 revision)
struct xt_target *t;
int err = 0;
- if (down_interruptible(&xt[af].mutex) != 0)
+ if (mutex_lock_interruptible(&xt[af].mutex) != 0)
return ERR_PTR(-EINTR);
list_for_each_entry(t, &xt[af].target, list) {
if (strcmp(t->name, name) == 0) {
if (t->revision == revision) {
if (try_module_get(t->me)) {
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return t;
}
} else
err = -EPROTOTYPE; /* Found something. */
}
}
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return ERR_PTR(err);
}
EXPORT_SYMBOL(xt_find_target);
@@ -218,7 +220,7 @@ int xt_find_revision(int af, const char *name, u8 revision, int target,
{
int have_rev, best = -1;
- if (down_interruptible(&xt[af].mutex) != 0) {
+ if (mutex_lock_interruptible(&xt[af].mutex) != 0) {
*err = -EINTR;
return 1;
}
@@ -226,7 +228,7 @@ int xt_find_revision(int af, const char *name, u8 revision, int target,
have_rev = target_revfn(af, name, revision, &best);
else
have_rev = match_revfn(af, name, revision, &best);
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
/* Nothing at all? Return 0 to try loading module. */
if (best == -1) {
@@ -352,20 +354,20 @@ struct xt_table *xt_find_table_lock(int af, const char *name)
{
struct xt_table *t;
- if (down_interruptible(&xt[af].mutex) != 0)
+ if (mutex_lock_interruptible(&xt[af].mutex) != 0)
return ERR_PTR(-EINTR);
list_for_each_entry(t, &xt[af].tables, list)
if (strcmp(t->name, name) == 0 && try_module_get(t->me))
return t;
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
return NULL;
}
EXPORT_SYMBOL_GPL(xt_find_table_lock);
void xt_table_unlock(struct xt_table *table)
{
- up(&xt[table->af].mutex);
+ mutex_unlock(&xt[table->af].mutex);
}
EXPORT_SYMBOL_GPL(xt_table_unlock);
@@ -405,7 +407,7 @@ int xt_register_table(struct xt_table *table,
int ret;
struct xt_table_info *private;
- ret = down_interruptible(&xt[table->af].mutex);
+ ret = mutex_lock_interruptible(&xt[table->af].mutex);
if (ret != 0)
return ret;
@@ -431,7 +433,7 @@ int xt_register_table(struct xt_table *table,
ret = 0;
unlock:
- up(&xt[table->af].mutex);
+ mutex_unlock(&xt[table->af].mutex);
return ret;
}
EXPORT_SYMBOL_GPL(xt_register_table);
@@ -440,10 +442,10 @@ void *xt_unregister_table(struct xt_table *table)
{
struct xt_table_info *private;
- down(&xt[table->af].mutex);
+ mutex_lock(&xt[table->af].mutex);
private = table->private;
LIST_DELETE(&xt[table->af].tables, table);
- up(&xt[table->af].mutex);
+ mutex_unlock(&xt[table->af].mutex);
return private;
}
@@ -507,7 +509,7 @@ static void *xt_tgt_seq_start(struct seq_file *seq, loff_t *pos)
if (!list)
return NULL;
- if (down_interruptible(&xt[af].mutex) != 0)
+ if (mutex_lock_interruptible(&xt[af].mutex) != 0)
return NULL;
return xt_get_idx(list, seq, *pos);
@@ -536,7 +538,7 @@ static void xt_tgt_seq_stop(struct seq_file *seq, void *v)
struct proc_dir_entry *pde = seq->private;
u_int16_t af = (unsigned long)pde->data & 0xffff;
- up(&xt[af].mutex);
+ mutex_unlock(&xt[af].mutex);
}
static int xt_name_seq_show(struct seq_file *seq, void *v)
@@ -668,7 +670,7 @@ static int __init xt_init(void)
return -ENOMEM;
for (i = 0; i < NPROTO; i++) {
- init_MUTEX(&xt[i].mutex);
+ mutex_init(&xt[i].mutex);
INIT_LIST_HEAD(&xt[i].target);
INIT_LIST_HEAD(&xt[i].match);
INIT_LIST_HEAD(&xt[i].tables);
diff --git a/net/sctp/input.c b/net/sctp/input.c
index cb78b50868ee..d117ebc75cf8 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -127,7 +127,6 @@ int sctp_rcv(struct sk_buff *skb)
union sctp_addr dest;
int family;
struct sctp_af *af;
- int ret = 0;
if (skb->pkt_type!=PACKET_HOST)
goto discard_it;
@@ -227,16 +226,13 @@ int sctp_rcv(struct sk_buff *skb)
goto discard_release;
nf_reset(skb);
- ret = sk_filter(sk, skb, 1);
- if (ret)
+ if (sk_filter(sk, skb, 1))
goto discard_release;
/* Create an SCTP packet structure. */
chunk = sctp_chunkify(skb, asoc, sk);
- if (!chunk) {
- ret = -ENOMEM;
+ if (!chunk)
goto discard_release;
- }
SCTP_INPUT_CB(skb)->chunk = chunk;
/* Remember what endpoint is to handle this packet. */
@@ -277,11 +273,11 @@ int sctp_rcv(struct sk_buff *skb)
sctp_bh_unlock_sock(sk);
sock_put(sk);
- return ret;
+ return 0;
discard_it:
kfree_skb(skb);
- return ret;
+ return 0;
discard_release:
/* Release any structures we may be holding. */