diff options
author | Alex Shi <alex.shi@linaro.org> | 2018-03-19 12:01:32 +0800 |
---|---|---|
committer | Alex Shi <alex.shi@linaro.org> | 2018-03-19 12:01:32 +0800 |
commit | 9ad0ea90a166b728745bdbef04f573a4eed811fd (patch) | |
tree | bd4bc901c5588576603f3ec15169bf4c07359a3a /net/netfilter | |
parent | c87aba7d0caf207f717c52ba9271d6185576d9aa (diff) | |
parent | 06eb38abaf83b589a5e66ca4749eee16fa0d9854 (diff) |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Diffstat (limited to 'net/netfilter')
-rw-r--r-- | net/netfilter/nf_nat_proto_common.c | 7 | ||||
-rw-r--r-- | net/netfilter/nfnetlink_queue.c | 2 | ||||
-rw-r--r-- | net/netfilter/x_tables.c | 55 | ||||
-rw-r--r-- | net/netfilter/xt_IDLETIMER.c | 9 | ||||
-rw-r--r-- | net/netfilter/xt_LED.c | 12 |
5 files changed, 73 insertions, 12 deletions
diff --git a/net/netfilter/nf_nat_proto_common.c b/net/netfilter/nf_nat_proto_common.c index fbce552a796e..7d7466dbf663 100644 --- a/net/netfilter/nf_nat_proto_common.c +++ b/net/netfilter/nf_nat_proto_common.c @@ -41,7 +41,7 @@ void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto, const struct nf_conn *ct, u16 *rover) { - unsigned int range_size, min, i; + unsigned int range_size, min, max, i; __be16 *portptr; u_int16_t off; @@ -71,7 +71,10 @@ void nf_nat_l4proto_unique_tuple(const struct nf_nat_l3proto *l3proto, } } else { min = ntohs(range->min_proto.all); - range_size = ntohs(range->max_proto.all) - min + 1; + max = ntohs(range->max_proto.all); + if (unlikely(max < min)) + swap(max, min); + range_size = max - min + 1; } if (range->flags & NF_NAT_RANGE_PROTO_RANDOM) { diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c index f853b55bf877..7edcfda288c4 100644 --- a/net/netfilter/nfnetlink_queue.c +++ b/net/netfilter/nfnetlink_queue.c @@ -501,7 +501,7 @@ nfqnl_build_packet_message(struct net *net, struct nfqnl_instance *queue, if (entskb->tstamp.tv64) { struct nfqnl_msg_packet_timestamp ts; - struct timespec64 kts = ktime_to_timespec64(skb->tstamp); + struct timespec64 kts = ktime_to_timespec64(entskb->tstamp); ts.sec = cpu_to_be64(kts.tv_sec); ts.usec = cpu_to_be64(kts.tv_nsec / NSEC_PER_USEC); diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 5b52dd3feb7d..34ae20490c94 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -38,6 +38,8 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>"); MODULE_DESCRIPTION("{ip,ip6,arp,eb}_tables backend module"); +#define XT_PCPU_BLOCK_SIZE 4096 + struct compat_delta { unsigned int offset; /* offset in kernel */ int delta; /* delta in 32bit user land */ @@ -1592,6 +1594,59 @@ void xt_proto_fini(struct net *net, u_int8_t af) } EXPORT_SYMBOL_GPL(xt_proto_fini); +/** + * xt_percpu_counter_alloc - allocate x_tables rule counter + * + * @state: pointer to xt_percpu allocation state + * @counter: pointer to counter struct inside the ip(6)/arpt_entry struct + * + * On SMP, the packet counter [ ip(6)t_entry->counters.pcnt ] will then + * contain the address of the real (percpu) counter. + * + * Rule evaluation needs to use xt_get_this_cpu_counter() helper + * to fetch the real percpu counter. + * + * To speed up allocation and improve data locality, a 4kb block is + * allocated. + * + * xt_percpu_counter_alloc_state contains the base address of the + * allocated page and the current sub-offset. + * + * returns false on error. + */ +bool xt_percpu_counter_alloc(struct xt_percpu_counter_alloc_state *state, + struct xt_counters *counter) +{ + BUILD_BUG_ON(XT_PCPU_BLOCK_SIZE < (sizeof(*counter) * 2)); + + if (nr_cpu_ids <= 1) + return true; + + if (!state->mem) { + state->mem = __alloc_percpu(XT_PCPU_BLOCK_SIZE, + XT_PCPU_BLOCK_SIZE); + if (!state->mem) + return false; + } + counter->pcnt = (__force unsigned long)(state->mem + state->off); + state->off += sizeof(*counter); + if (state->off > (XT_PCPU_BLOCK_SIZE - sizeof(*counter))) { + state->mem = NULL; + state->off = 0; + } + return true; +} +EXPORT_SYMBOL_GPL(xt_percpu_counter_alloc); + +void xt_percpu_counter_free(struct xt_counters *counters) +{ + unsigned long pcnt = counters->pcnt; + + if (nr_cpu_ids > 1 && (pcnt & (XT_PCPU_BLOCK_SIZE - 1)) == 0) + free_percpu((void __percpu *)pcnt); +} +EXPORT_SYMBOL_GPL(xt_percpu_counter_free); + static int __net_init xt_net_init(struct net *net) { int i; diff --git a/net/netfilter/xt_IDLETIMER.c b/net/netfilter/xt_IDLETIMER.c index f11aa28b96ce..12d33ea361bc 100644 --- a/net/netfilter/xt_IDLETIMER.c +++ b/net/netfilter/xt_IDLETIMER.c @@ -323,11 +323,11 @@ static int idletimer_tg_create(struct idletimer_tg_info *info) printk(KERN_WARNING "[%s] Failed to register pm notifier %d\n", __func__, ret); + INIT_WORK(&info->timer->work, idletimer_tg_work); + mod_timer(&info->timer->timer, msecs_to_jiffies(info->timeout * 1000) + jiffies); - INIT_WORK(&info->timer->work, idletimer_tg_work); - return 0; out_free_attr: @@ -412,7 +412,10 @@ static int idletimer_tg_checkentry(const struct xt_tgchk_param *par) pr_debug("timeout value is zero\n"); return -EINVAL; } - + if (info->timeout >= INT_MAX / 1000) { + pr_debug("timeout value is too big\n"); + return -EINVAL; + } if (info->label[0] == '\0' || strnlen(info->label, MAX_IDLETIMER_LABEL_SIZE) == MAX_IDLETIMER_LABEL_SIZE) { diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c index 3ba31c194cce..0858fe17e14a 100644 --- a/net/netfilter/xt_LED.c +++ b/net/netfilter/xt_LED.c @@ -141,10 +141,11 @@ static int led_tg_check(const struct xt_tgchk_param *par) goto exit_alloc; } - /* See if we need to set up a timer */ - if (ledinfo->delay > 0) - setup_timer(&ledinternal->timer, led_timeout_callback, - (unsigned long)ledinternal); + /* Since the letinternal timer can be shared between multiple targets, + * always set it up, even if the current target does not need it + */ + setup_timer(&ledinternal->timer, led_timeout_callback, + (unsigned long)ledinternal); list_add_tail(&ledinternal->list, &xt_led_triggers); @@ -181,8 +182,7 @@ static void led_tg_destroy(const struct xt_tgdtor_param *par) list_del(&ledinternal->list); - if (ledinfo->delay > 0) - del_timer_sync(&ledinternal->timer); + del_timer_sync(&ledinternal->timer); led_trigger_unregister(&ledinternal->netfilter_led_trigger); |