[PATCH 06/24] netfilter: Remove unnecessary OOM logging messages

From: Joe Perches
Date: Mon Aug 29 2011 - 17:19:37 EST

Removing unnecessary messages saves code and text.

Site specific OOM messages are duplications of a generic MM
out of memory message and aren't really useful, so just
delete them.

Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
net/bridge/netfilter/ebt_ulog.c | 7 +++----
net/ipv4/netfilter/ipt_CLUSTERIP.c | 1 -
net/ipv4/netfilter/ipt_ULOG.c | 4 +---
net/ipv4/netfilter/nf_nat_snmp_basic.c | 22 ++--------------------
net/ipv6/netfilter/nf_conntrack_reasm.c | 7 +++----
net/netfilter/ipset/ip_set_core.c | 4 +---
net/netfilter/ipvs/ip_vs_core.c | 5 ++---
net/netfilter/ipvs/ip_vs_ctl.c | 18 ++++++------------
net/netfilter/ipvs/ip_vs_dh.c | 5 ++---
net/netfilter/ipvs/ip_vs_lblc.c | 9 +++------
net/netfilter/ipvs/ip_vs_lblcr.c | 13 ++++---------
net/netfilter/ipvs/ip_vs_proto.c | 5 ++---
net/netfilter/ipvs/ip_vs_sh.c | 5 ++---
net/netfilter/ipvs/ip_vs_wrr.c | 5 ++---
net/netfilter/nf_conntrack_core.c | 5 +----
net/netfilter/nfnetlink_log.c | 7 ++-----
net/netfilter/xt_IDLETIMER.c | 2 --
net/netfilter/xt_hashlimit.c | 5 +----
18 files changed, 37 insertions(+), 92 deletions(-)

diff --git a/net/bridge/netfilter/ebt_ulog.c b/net/bridge/netfilter/ebt_ulog.c
index bf2a333..5449294 100644
--- a/net/bridge/netfilter/ebt_ulog.c
+++ b/net/bridge/netfilter/ebt_ulog.c
@@ -102,16 +102,15 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size)
unsigned int n;

n = max(size, nlbufsiz);
- skb = alloc_skb(n, GFP_ATOMIC);
+ skb = alloc_skb(n, GFP_ATOMIC | __GFP_NOWARN);
if (!skb) {
- pr_debug("cannot alloc whole buffer of size %ub!\n", n);
if (n > size) {
/* try to allocate only as much as we need for
* current packet */
skb = alloc_skb(size, GFP_ATOMIC);
if (!skb)
- pr_debug("cannot even allocate "
- "buffer of size %ub\n", size);
+ pr_debug("cannot even allocate buffer of size %ub\n",
+ size);
}
}

diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index db8d22d..a639967 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -395,7 +395,6 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
config = clusterip_config_init(cipinfo,
e->ip.dst.s_addr, dev);
if (!config) {
- pr_info("cannot allocate config\n");
dev_put(dev);
return -ENOMEM;
}
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index 446e0f4..b550815 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -135,10 +135,8 @@ static struct sk_buff *ulog_alloc_skb(unsigned int size)
* due to slab allocator restrictions */

n = max(size, nlbufsiz);
- skb = alloc_skb(n, GFP_ATOMIC);
+ skb = alloc_skb(n, GFP_ATOMIC | __GFP_NOWARN);
if (!skb) {
- pr_debug("cannot alloc whole buffer %ub!\n", n);
-
if (n > size) {
/* try to allocate only as much as we need for
* current packet */
diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic.c b/net/ipv4/netfilter/nf_nat_snmp_basic.c
index d1cb412..2133c30 100644
--- a/net/ipv4/netfilter/nf_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/nf_nat_snmp_basic.c
@@ -400,11 +400,8 @@ static unsigned char asn1_octets_decode(struct asn1_ctx *ctx,
*len = 0;

*octets = kmalloc(eoc - ctx->pointer, GFP_ATOMIC);
- if (*octets == NULL) {
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
+ if (*octets == NULL)
return 0;
- }

ptr = *octets;
while (ctx->pointer < eoc) {
@@ -451,11 +448,8 @@ static unsigned char asn1_oid_decode(struct asn1_ctx *ctx,
return 0;

*oid = kmalloc(size * sizeof(unsigned long), GFP_ATOMIC);
- if (*oid == NULL) {
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
+ if (*oid == NULL)
return 0;
- }

optr = *oid;

@@ -728,8 +722,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
*obj = kmalloc(sizeof(struct snmp_object) + len, GFP_ATOMIC);
if (*obj == NULL) {
kfree(id);
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
return 0;
}
(*obj)->syntax.l[0] = l;
@@ -744,8 +736,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
if (*obj == NULL) {
kfree(p);
kfree(id);
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
return 0;
}
memcpy((*obj)->syntax.c, p, len);
@@ -759,8 +749,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
*obj = kmalloc(sizeof(struct snmp_object), GFP_ATOMIC);
if (*obj == NULL) {
kfree(id);
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
return 0;
}
if (!asn1_null_decode(ctx, end)) {
@@ -780,8 +768,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
if (*obj == NULL) {
kfree(lp);
kfree(id);
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
return 0;
}
memcpy((*obj)->syntax.ul, lp, len);
@@ -801,8 +787,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
if (*obj == NULL) {
kfree(p);
kfree(id);
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
return 0;
}
memcpy((*obj)->syntax.uc, p, len);
@@ -819,8 +803,6 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
*obj = kmalloc(sizeof(struct snmp_object) + len, GFP_ATOMIC);
if (*obj == NULL) {
kfree(id);
- if (net_ratelimit())
- pr_notice("OOM in bsalg (%d)\n", __LINE__);
return 0;
}
(*obj)->syntax.ul[0] = ul;
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 0857272..f2f2523 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -182,7 +182,6 @@ fq_find(__be32 id, u32 user, struct in6_addr *src, struct in6_addr *dst)
return container_of(q, struct nf_ct_frag6_queue, q);

oom:
- pr_debug("Can't alloc new queue\n");
return NULL;
}

@@ -370,10 +369,10 @@ nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
struct sk_buff *clone;
int i, plen = 0;

- if ((clone = alloc_skb(0, GFP_ATOMIC)) == NULL) {
- pr_debug("Can't alloc skb\n");
+ clone = alloc_skb(0, GFP_ATOMIC);
+ if (clone == NULL)
goto out_oom;
- }
+
clone->next = head->next;
head->next = clone;
skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index d7e86ef..86137b5 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -1699,10 +1699,8 @@ ip_set_init(void)

ip_set_list = kzalloc(sizeof(struct ip_set *) * ip_set_max,
GFP_KERNEL);
- if (!ip_set_list) {
- pr_err("ip_set: Unable to create ip_set_list\n");
+ if (!ip_set_list)
return -ENOMEM;
- }

ret = nfnetlink_subsys_register(&ip_set_netlink_subsys);
if (ret != 0) {
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 4f77bb1..67d7ff7 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1878,10 +1878,9 @@ static int __net_init __ip_vs_init(struct net *net)
struct netns_ipvs *ipvs;

ipvs = net_generic(net, ip_vs_net_id);
- if (ipvs == NULL) {
- pr_err("%s(): no memory.\n", __func__);
+ if (ipvs == NULL)
return -ENOMEM;
- }
+
/* Hold the beast until a service is registerd */
ipvs->enable = 0;
ipvs->net = net;
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 2b771dc..1d1926c 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -856,15 +856,12 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest,
}

dest = kzalloc(sizeof(struct ip_vs_dest), GFP_KERNEL);
- if (dest == NULL) {
- pr_err("%s(): no memory.\n", __func__);
+ if (dest == NULL)
return -ENOMEM;
- }
+
dest->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
- if (!dest->stats.cpustats) {
- pr_err("%s() alloc_percpu failed\n", __func__);
+ if (!dest->stats.cpustats)
goto err_alloc;
- }

dest->af = svc->af;
dest->protocol = svc->protocol;
@@ -1168,10 +1165,8 @@ ip_vs_add_service(struct net *net, struct ip_vs_service_user_kern *u,
goto out_err;
}
svc->stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
- if (!svc->stats.cpustats) {
- pr_err("%s() alloc_percpu failed\n", __func__);
+ if (!svc->stats.cpustats)
goto out_err;
- }

/* I'm the first user of the service */
atomic_set(&svc->usecnt, 0);
@@ -3691,10 +3686,9 @@ int __net_init ip_vs_control_net_init(struct net *net)

/* procfs stats */
ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
- if (!ipvs->tot_stats.cpustats) {
- pr_err("%s(): alloc_percpu.\n", __func__);
+ if (!ipvs->tot_stats.cpustats)
return -ENOMEM;
- }
+
spin_lock_init(&ipvs->tot_stats.lock);

proc_net_fops_create(net, "ip_vs", 0, &ip_vs_info_fops);
diff --git a/net/netfilter/ipvs/ip_vs_dh.c b/net/netfilter/ipvs/ip_vs_dh.c
index 95fd0d1..1c269e5 100644
--- a/net/netfilter/ipvs/ip_vs_dh.c
+++ b/net/netfilter/ipvs/ip_vs_dh.c
@@ -150,10 +150,9 @@ static int ip_vs_dh_init_svc(struct ip_vs_service *svc)
/* allocate the DH table for this service */
tbl = kmalloc(sizeof(struct ip_vs_dh_bucket)*IP_VS_DH_TAB_SIZE,
GFP_ATOMIC);
- if (tbl == NULL) {
- pr_err("%s(): no memory\n", __func__);
+ if (tbl == NULL)
return -ENOMEM;
- }
+
svc->sched_data = tbl;
IP_VS_DBG(6, "DH hash table (memory=%Zdbytes) allocated for "
"current service\n",
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 87e40ea..0f16283 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -202,10 +202,8 @@ ip_vs_lblc_new(struct ip_vs_lblc_table *tbl, const union nf_inet_addr *daddr,
en = ip_vs_lblc_get(dest->af, tbl, daddr);
if (!en) {
en = kmalloc(sizeof(*en), GFP_ATOMIC);
- if (!en) {
- pr_err("%s(): no memory\n", __func__);
+ if (!en)
return NULL;
- }

en->af = dest->af;
ip_vs_addr_copy(dest->af, &en->addr, daddr);
@@ -345,10 +343,9 @@ static int ip_vs_lblc_init_svc(struct ip_vs_service *svc)
* Allocate the ip_vs_lblc_table for this service
*/
tbl = kmalloc(sizeof(*tbl), GFP_ATOMIC);
- if (tbl == NULL) {
- pr_err("%s(): no memory\n", __func__);
+ if (tbl == NULL)
return -ENOMEM;
- }
+
svc->sched_data = tbl;
IP_VS_DBG(6, "LBLC hash table (memory=%Zdbytes) allocated for "
"current service\n", sizeof(*tbl));
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 90f618a..eec797f 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -112,10 +112,8 @@ ip_vs_dest_set_insert(struct ip_vs_dest_set *set, struct ip_vs_dest *dest)
}

e = kmalloc(sizeof(*e), GFP_ATOMIC);
- if (e == NULL) {
- pr_err("%s(): no memory\n", __func__);
+ if (e == NULL)
return NULL;
- }

atomic_inc(&dest->refcnt);
e->dest = dest;
@@ -373,10 +371,8 @@ ip_vs_lblcr_new(struct ip_vs_lblcr_table *tbl, const union nf_inet_addr *daddr,
en = ip_vs_lblcr_get(dest->af, tbl, daddr);
if (!en) {
en = kmalloc(sizeof(*en), GFP_ATOMIC);
- if (!en) {
- pr_err("%s(): no memory\n", __func__);
+ if (!en)
return NULL;
- }

en->af = dest->af;
ip_vs_addr_copy(dest->af, &en->addr, daddr);
@@ -516,10 +512,9 @@ static int ip_vs_lblcr_init_svc(struct ip_vs_service *svc)
* Allocate the ip_vs_lblcr_table for this service
*/
tbl = kmalloc(sizeof(*tbl), GFP_ATOMIC);
- if (tbl == NULL) {
- pr_err("%s(): no memory\n", __func__);
+ if (tbl == NULL)
return -ENOMEM;
- }
+
svc->sched_data = tbl;
IP_VS_DBG(6, "LBLCR hash table (memory=%Zdbytes) allocated for "
"current service\n", sizeof(*tbl));
diff --git a/net/netfilter/ipvs/ip_vs_proto.c b/net/netfilter/ipvs/ip_vs_proto.c
index 52d073c..8531293 100644
--- a/net/netfilter/ipvs/ip_vs_proto.c
+++ b/net/netfilter/ipvs/ip_vs_proto.c
@@ -74,10 +74,9 @@ register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp)
struct ip_vs_proto_data *pd =
kzalloc(sizeof(struct ip_vs_proto_data), GFP_ATOMIC);

- if (!pd) {
- pr_err("%s(): no memory.\n", __func__);
+ if (!pd)
return -ENOMEM;
- }
+
pd->pp = pp; /* For speed issues */
pd->next = ipvs->proto_data_table[hash];
ipvs->proto_data_table[hash] = pd;
diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c
index b5e2556..33815f4 100644
--- a/net/netfilter/ipvs/ip_vs_sh.c
+++ b/net/netfilter/ipvs/ip_vs_sh.c
@@ -147,10 +147,9 @@ static int ip_vs_sh_init_svc(struct ip_vs_service *svc)
/* allocate the SH table for this service */
tbl = kmalloc(sizeof(struct ip_vs_sh_bucket)*IP_VS_SH_TAB_SIZE,
GFP_ATOMIC);
- if (tbl == NULL) {
- pr_err("%s(): no memory\n", __func__);
+ if (tbl == NULL)
return -ENOMEM;
- }
+
svc->sched_data = tbl;
IP_VS_DBG(6, "SH hash table (memory=%Zdbytes) allocated for "
"current service\n",
diff --git a/net/netfilter/ipvs/ip_vs_wrr.c b/net/netfilter/ipvs/ip_vs_wrr.c
index 1ef41f5..fd0d4e0 100644
--- a/net/netfilter/ipvs/ip_vs_wrr.c
+++ b/net/netfilter/ipvs/ip_vs_wrr.c
@@ -85,10 +85,9 @@ static int ip_vs_wrr_init_svc(struct ip_vs_service *svc)
* Allocate the mark variable for WRR scheduling
*/
mark = kmalloc(sizeof(struct ip_vs_wrr_mark), GFP_ATOMIC);
- if (mark == NULL) {
- pr_err("%s(): no memory\n", __func__);
+ if (mark == NULL)
return -ENOMEM;
- }
+
mark->cl = &svc->destinations;
mark->cw = 0;
mark->mw = ip_vs_wrr_max_weight(svc);
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 5acfaf5..7202b06 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -661,7 +661,6 @@ __nf_conntrack_alloc(struct net *net, u16 zone,
*/
ct = kmem_cache_alloc(net->ct.nf_conntrack_cachep, gfp);
if (ct == NULL) {
- pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n");
atomic_dec(&net->ct.count);
return ERR_PTR(-ENOMEM);
}
@@ -749,10 +748,8 @@ init_conntrack(struct net *net, struct nf_conn *tmpl,

ct = __nf_conntrack_alloc(net, zone, tuple, &repl_tuple, GFP_ATOMIC,
hash);
- if (IS_ERR(ct)) {
- pr_debug("Can't allocate conntrack.\n");
+ if (IS_ERR(ct))
return (struct nf_conntrack_tuple_hash *)ct;
- }

if (!l4proto->new(ct, skb, dataoff)) {
nf_conntrack_free(ct);
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 2d8158a..66b2c54 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -307,17 +307,14 @@ nfulnl_alloc_skb(unsigned int inst_size, unsigned int pkt_size)
n = max(inst_size, pkt_size);
skb = alloc_skb(n, GFP_ATOMIC);
if (!skb) {
- pr_notice("nfnetlink_log: can't alloc whole buffer (%u bytes)\n",
- inst_size);
-
if (n > pkt_size) {
/* try to allocate only as much as we need for current
* packet */

skb = alloc_skb(pkt_size, GFP_ATOMIC);
if (!skb)
- pr_err("nfnetlink_log: can't even alloc %u "
- "bytes\n", pkt_size);
+ pr_err("nfnetlink_log: can't even alloc %u bytes\n",
+ pkt_size);
}
}

diff --git a/net/netfilter/xt_IDLETIMER.c b/net/netfilter/xt_IDLETIMER.c
index 3bdd443..f407ebc1 100644
--- a/net/netfilter/xt_IDLETIMER.c
+++ b/net/netfilter/xt_IDLETIMER.c
@@ -122,14 +122,12 @@ static int idletimer_tg_create(struct idletimer_tg_info *info)

info->timer = kmalloc(sizeof(*info->timer), GFP_KERNEL);
if (!info->timer) {
- pr_debug("couldn't alloc timer\n");
ret = -ENOMEM;
goto out;
}

info->timer->attr.attr.name = kstrdup(info->label, GFP_KERNEL);
if (!info->timer->attr.attr.name) {
- pr_debug("couldn't alloc attribute name\n");
ret = -ENOMEM;
goto out_free_timer;
}
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 9228ee0..dfd52ba 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -176,10 +176,7 @@ dsthash_alloc_init(struct xt_hashlimit_htable *ht,
ent = NULL;
} else
ent = kmem_cache_alloc(hashlimit_cachep, GFP_ATOMIC);
- if (!ent) {
- if (net_ratelimit())
- pr_err("cannot allocate dsthash_ent\n");
- } else {
+ if (ent) {
memcpy(&ent->dst, dst, sizeof(ent->dst));
spin_lock_init(&ent->lock);

--
1.7.6.405.gc1be0

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