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Message-Id: <1477914225-11298-7-git-send-email-elena.reshetova@intel.com>
Date: Mon, 31 Oct 2016 13:43:38 +0200
From: Elena Reshetova <elena.reshetova@...el.com>
To: kernel-hardening@...ts.openwall.com
Cc: keescook@...omium.org,
arnd@...db.de,
tglx@...utronix.de,
mingo@...hat.com,
h.peter.anvin@...el.com,
David Windsor <dwindsor@...il.com>,
Hans Liljestrand <ishkamiel@...il.com>,
Elena Reshetova <elena.reshetova@...el.com>
Subject: [RFC v3 PATCH 06/13] net: identify wrapping atomic usage
From: David Windsor <dwindsor@...il.com>
In some cases atomic is not used for reference
counting and therefore should be allowed to overflow.
Identify such cases and make a switch to non-hardened
atomic version.
The copyright for the original PAX_REFCOUNT code:
- all REFCOUNT code in general: PaX Team <pageexec@...email.hu>
- various false positive fixes: Mathias Krause <minipli@...glemail.com>
Signed-off-by: Hans Liljestrand <ishkamiel@...il.com>
Signed-off-by: Elena Reshetova <elena.reshetova@...el.com>
Signed-off-by: David Windsor <dwindsor@...il.com>
---
drivers/net/ipvlan/ipvlan_core.c | 2 +-
drivers/net/macvlan.c | 2 +-
include/linux/netdevice.h | 8 +++----
include/linux/sunrpc/svc_rdma.h | 18 +++++++--------
include/net/bonding.h | 2 +-
include/net/caif/cfctrl.h | 4 ++--
include/net/flow.h | 2 +-
include/net/gro_cells.h | 2 +-
include/net/inetpeer.h | 3 ++-
include/net/ip_fib.h | 2 +-
include/net/ip_vs.h | 4 ++--
include/net/iucv/af_iucv.h | 2 +-
include/net/net_namespace.h | 12 +++++-----
include/net/netns/ipv4.h | 4 ++--
include/net/netns/ipv6.h | 4 ++--
include/net/netns/xfrm.h | 2 +-
include/net/sock.h | 8 +++----
include/net/tcp.h | 2 +-
include/net/xfrm.h | 2 +-
net/batman-adv/bat_iv_ogm.c | 8 +++----
net/batman-adv/fragmentation.c | 3 ++-
net/batman-adv/soft-interface.c | 6 ++---
net/batman-adv/types.h | 6 ++---
net/caif/cfctrl.c | 11 +++++----
net/ceph/messenger.c | 4 ++--
net/core/datagram.c | 2 +-
net/core/dev.c | 18 +++++++--------
net/core/flow.c | 9 ++++----
net/core/net-sysfs.c | 2 +-
net/core/netpoll.c | 4 ++--
net/core/rtnetlink.c | 2 +-
net/core/sock.c | 14 ++++++------
net/core/sock_diag.c | 8 +++----
net/ipv4/devinet.c | 4 ++--
net/ipv4/fib_frontend.c | 6 ++---
net/ipv4/fib_semantics.c | 2 +-
net/ipv4/inet_connection_sock.c | 4 ++--
net/ipv4/inet_timewait_sock.c | 3 ++-
net/ipv4/inetpeer.c | 2 +-
net/ipv4/ip_fragment.c | 2 +-
net/ipv4/ping.c | 2 +-
net/ipv4/raw.c | 5 +++--
net/ipv4/route.c | 12 +++++-----
net/ipv4/tcp_input.c | 2 +-
net/ipv4/udp.c | 10 ++++-----
net/ipv6/addrconf.c | 7 +++---
net/ipv6/af_inet6.c | 2 +-
net/ipv6/datagram.c | 2 +-
net/ipv6/ip6_fib.c | 4 ++--
net/ipv6/raw.c | 6 ++---
net/ipv6/udp.c | 6 ++---
net/iucv/af_iucv.c | 5 +++--
net/key/af_key.c | 4 ++--
net/l2tp/l2tp_eth.c | 38 ++++++++++++++++----------------
net/netfilter/ipvs/ip_vs_conn.c | 6 ++---
net/netfilter/ipvs/ip_vs_core.c | 8 +++----
net/netfilter/ipvs/ip_vs_ctl.c | 12 +++++-----
net/netfilter/ipvs/ip_vs_sync.c | 6 ++---
net/netfilter/ipvs/ip_vs_xmit.c | 4 ++--
net/netfilter/nfnetlink_log.c | 4 ++--
net/netfilter/xt_statistic.c | 9 ++++----
net/netlink/af_netlink.c | 4 ++--
net/packet/af_packet.c | 4 ++--
net/phonet/pep.c | 6 ++---
net/phonet/socket.c | 2 +-
net/rds/cong.c | 6 ++---
net/rds/ib.h | 2 +-
net/rds/ib_cm.c | 2 +-
net/rds/ib_recv.c | 4 ++--
net/rxrpc/af_rxrpc.c | 2 +-
net/rxrpc/ar-internal.h | 4 ++--
net/rxrpc/call_object.c | 2 +-
net/rxrpc/conn_event.c | 4 ++--
net/rxrpc/conn_object.c | 2 +-
net/rxrpc/local_object.c | 2 +-
net/rxrpc/output.c | 6 ++---
net/rxrpc/peer_object.c | 2 +-
net/rxrpc/proc.c | 2 +-
net/rxrpc/rxkad.c | 4 ++--
net/sched/sch_generic.c | 4 ++--
net/sctp/sctp_diag.c | 2 +-
net/sunrpc/auth_gss/svcauth_gss.c | 4 ++--
net/sunrpc/sched.c | 4 ++--
net/sunrpc/xprtrdma/svc_rdma.c | 36 +++++++++++++++---------------
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 8 +++----
net/sunrpc/xprtrdma/svc_rdma_sendto.c | 2 +-
net/sunrpc/xprtrdma/svc_rdma_transport.c | 2 +-
net/xfrm/xfrm_policy.c | 11 ++++-----
net/xfrm/xfrm_state.c | 4 ++--
security/selinux/include/xfrm.h | 2 +-
90 files changed, 254 insertions(+), 244 deletions(-)
diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c
index b4e9907..17712d4 100644
--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -484,7 +484,7 @@ static void ipvlan_multicast_enqueue(struct ipvl_port *port,
schedule_work(&port->wq);
} else {
spin_unlock(&port->backlog.lock);
- atomic_long_inc(&skb->dev->rx_dropped);
+ atomic_long_inc_wrap(&skb->dev->rx_dropped);
kfree_skb(skb);
}
}
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 3234fcd..9d5435f 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -343,7 +343,7 @@ static void macvlan_broadcast_enqueue(struct macvlan_port *port,
free_nskb:
kfree_skb(nskb);
err:
- atomic_long_inc(&skb->dev->rx_dropped);
+ atomic_long_inc_wrap(&skb->dev->rx_dropped);
}
static void macvlan_flush_sources(struct macvlan_port *port,
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 136ae6bb..21ad33b 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1651,7 +1651,7 @@ struct net_device {
unsigned long base_addr;
int irq;
- atomic_t carrier_changes;
+ atomic_wrap_t carrier_changes;
/*
* Some hardware also needs these fields (state,dev_list,
@@ -1691,9 +1691,9 @@ struct net_device {
struct net_device_stats stats;
- atomic_long_t rx_dropped;
- atomic_long_t tx_dropped;
- atomic_long_t rx_nohandler;
+ atomic_long_wrap_t rx_dropped;
+ atomic_long_wrap_t tx_dropped;
+ atomic_long_wrap_t rx_nohandler;
#ifdef CONFIG_WIRELESS_EXT
const struct iw_handler_def *wireless_handlers;
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index cc3ae16..b257f44 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -54,15 +54,15 @@ extern unsigned int svcrdma_max_requests;
extern unsigned int svcrdma_max_bc_requests;
extern unsigned int svcrdma_max_req_size;
-extern atomic_t rdma_stat_recv;
-extern atomic_t rdma_stat_read;
-extern atomic_t rdma_stat_write;
-extern atomic_t rdma_stat_sq_starve;
-extern atomic_t rdma_stat_rq_starve;
-extern atomic_t rdma_stat_rq_poll;
-extern atomic_t rdma_stat_rq_prod;
-extern atomic_t rdma_stat_sq_poll;
-extern atomic_t rdma_stat_sq_prod;
+extern atomic_wrap_t rdma_stat_recv;
+extern atomic_wrap_t rdma_stat_read;
+extern atomic_wrap_t rdma_stat_write;
+extern atomic_wrap_t rdma_stat_sq_starve;
+extern atomic_wrap_t rdma_stat_rq_starve;
+extern atomic_wrap_t rdma_stat_rq_poll;
+extern atomic_wrap_t rdma_stat_rq_prod;
+extern atomic_wrap_t rdma_stat_sq_poll;
+extern atomic_wrap_t rdma_stat_sq_prod;
/*
* Contexts are built when an RDMA request is created and are a
diff --git a/include/net/bonding.h b/include/net/bonding.h
index f32f7ef..1de3052 100644
--- a/include/net/bonding.h
+++ b/include/net/bonding.h
@@ -695,7 +695,7 @@ extern struct rtnl_link_ops bond_link_ops;
static inline void bond_tx_drop(struct net_device *dev, struct sk_buff *skb)
{
- atomic_long_inc(&dev->tx_dropped);
+ atomic_long_inc_wrap(&dev->tx_dropped);
dev_kfree_skb_any(skb);
}
diff --git a/include/net/caif/cfctrl.h b/include/net/caif/cfctrl.h
index f2ae33d..1ef13f2 100644
--- a/include/net/caif/cfctrl.h
+++ b/include/net/caif/cfctrl.h
@@ -101,8 +101,8 @@ struct cfctrl_request_info {
struct cfctrl {
struct cfsrvl serv;
struct cfctrl_rsp res;
- atomic_t req_seq_no;
- atomic_t rsp_seq_no;
+ atomic_wrap_t req_seq_no;
+ atomic_wrap_t rsp_seq_no;
struct list_head list;
/* Protects from simultaneous access to first_req list */
spinlock_t info_list_lock;
diff --git a/include/net/flow.h b/include/net/flow.h
index 035aa77..37f1358 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -242,7 +242,7 @@ void flow_cache_fini(struct net *net);
void flow_cache_flush(struct net *net);
void flow_cache_flush_deferred(struct net *net);
-extern atomic_t flow_cache_genid;
+extern atomic_wrap_t flow_cache_genid;
__u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys);
diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h
index d15214d..32a3166 100644
--- a/include/net/gro_cells.h
+++ b/include/net/gro_cells.h
@@ -25,7 +25,7 @@ static inline int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *sk
cell = this_cpu_ptr(gcells->cells);
if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
- atomic_long_inc(&dev->rx_dropped);
+ atomic_long_inc_wrap(&dev->rx_dropped);
kfree_skb(skb);
return NET_RX_DROP;
}
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 235c781..c81eb78 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -52,7 +52,8 @@ struct inet_peer {
*/
union {
struct {
- atomic_t rid; /* Frag reception counter */
+ atomic_wrap_t rid;
+ /* Frag reception counter */
};
struct rcu_head rcu;
struct inet_peer *gc_next;
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index b9314b4..a8c2b24 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -189,7 +189,7 @@ static inline void fib_info_offload_dec(struct fib_info *fi)
#define FIB_RES_SADDR(net, res) \
((FIB_RES_NH(res).nh_saddr_genid == \
- atomic_read(&(net)->ipv4.dev_addr_genid)) ? \
+ atomic_read_wrap(&(net)->ipv4.dev_addr_genid)) ? \
FIB_RES_NH(res).nh_saddr : \
fib_info_update_nh_saddr((net), &FIB_RES_NH(res)))
#define FIB_RES_GW(res) (FIB_RES_NH(res).nh_gw)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index cd6018a..49835c6 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -543,7 +543,7 @@ struct ip_vs_conn {
struct ip_vs_conn *control; /* Master control connection */
atomic_t n_control; /* Number of controlled ones */
struct ip_vs_dest *dest; /* real server */
- atomic_t in_pkts; /* incoming packet counter */
+ atomic_wrap_t in_pkts; /* incoming packet counter */
/* Packet transmitter for different forwarding methods. If it
* mangles the packet, it must return NF_DROP or better NF_STOLEN,
@@ -664,7 +664,7 @@ struct ip_vs_dest {
__be16 port; /* port number of the server */
union nf_inet_addr addr; /* IP address of the server */
volatile unsigned int flags; /* dest status flags */
- atomic_t conn_flags; /* flags to copy to conn */
+ atomic_wrap_t conn_flags; /* flags to copy to conn */
atomic_t weight; /* server weight */
atomic_t refcnt; /* reference counter */
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 714cc9a..2401e9e 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -149,7 +149,7 @@ struct iucv_skb_cb {
struct iucv_sock_list {
struct hlist_head head;
rwlock_t lock;
- atomic_t autobind_name;
+ atomic_wrap_t autobind_name;
};
unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index fc4f757..792c736 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -53,7 +53,7 @@ struct net {
*/
spinlock_t rules_mod_lock;
- atomic64_t cookie_gen;
+ atomic64_wrap_t cookie_gen;
struct list_head list; /* list of network namespaces */
struct list_head cleanup_list; /* namespaces on death row */
@@ -142,7 +142,7 @@ struct net {
struct netns_mpls mpls;
#endif
struct sock *diag_nlsk;
- atomic_t fnhe_genid;
+ atomic_wrap_t fnhe_genid;
};
#include <linux/seq_file_net.h>
@@ -341,12 +341,12 @@ static inline void unregister_net_sysctl_table(struct ctl_table_header *header)
static inline int rt_genid_ipv4(struct net *net)
{
- return atomic_read(&net->ipv4.rt_genid);
+ return atomic_read_wrap(&net->ipv4.rt_genid);
}
static inline void rt_genid_bump_ipv4(struct net *net)
{
- atomic_inc(&net->ipv4.rt_genid);
+ atomic_inc_wrap(&net->ipv4.rt_genid);
}
extern void (*__fib6_flush_trees)(struct net *net);
@@ -373,12 +373,12 @@ static inline void rt_genid_bump_all(struct net *net)
static inline int fnhe_genid(struct net *net)
{
- return atomic_read(&net->fnhe_genid);
+ return atomic_read_wrap(&net->fnhe_genid);
}
static inline void fnhe_genid_bump(struct net *net)
{
- atomic_inc(&net->fnhe_genid);
+ atomic_inc_wrap(&net->fnhe_genid);
}
#endif /* __NET_NET_NAMESPACE_H */
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index 7adf438..33130b6 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -118,7 +118,7 @@ struct netns_ipv4 {
struct ping_group_range ping_group_range;
- atomic_t dev_addr_genid;
+ atomic_wrap_t dev_addr_genid;
#ifdef CONFIG_SYSCTL
unsigned long *sysctl_local_reserved_ports;
@@ -135,6 +135,6 @@ struct netns_ipv4 {
#ifdef CONFIG_IP_ROUTE_MULTIPATH
int sysctl_fib_multipath_use_neigh;
#endif
- atomic_t rt_genid;
+ atomic_wrap_t rt_genid;
};
#endif
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 10d0848..a0eb0a9 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -83,8 +83,8 @@ struct netns_ipv6 {
struct fib_rules_ops *mr6_rules_ops;
#endif
#endif
- atomic_t dev_addr_genid;
- atomic_t fib6_sernum;
+ atomic_wrap_t dev_addr_genid;
+ atomic_wrap_t fib6_sernum;
};
#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
index 27bb963..a39e73e 100644
--- a/include/net/netns/xfrm.h
+++ b/include/net/netns/xfrm.h
@@ -76,7 +76,7 @@ struct netns_xfrm {
/* flow cache part */
struct flow_cache flow_cache_global;
- atomic_t flow_cache_genid;
+ atomic_wrap_t flow_cache_genid;
struct list_head flow_cache_gc_list;
atomic_t flow_cache_gc_count;
spinlock_t flow_cache_gc_lock;
diff --git a/include/net/sock.h b/include/net/sock.h
index ebf75db..7253c97 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -188,7 +188,7 @@ struct sock_common {
struct in6_addr skc_v6_rcv_saddr;
#endif
- atomic64_t skc_cookie;
+ atomic64_wrap_t skc_cookie;
/* following fields are padding to force
* offset(struct sock, sk_refcnt) == 128 on 64bit arches
@@ -364,7 +364,7 @@ struct sock {
unsigned int sk_napi_id;
unsigned int sk_ll_usec;
#endif
- atomic_t sk_drops;
+ atomic_wrap_t sk_drops;
int sk_rcvbuf;
struct sk_filter __rcu *sk_filter;
@@ -2106,14 +2106,14 @@ struct sock_skb_cb {
static inline void
sock_skb_set_dropcount(const struct sock *sk, struct sk_buff *skb)
{
- SOCK_SKB_CB(skb)->dropcount = atomic_read(&sk->sk_drops);
+ SOCK_SKB_CB(skb)->dropcount = atomic_read_wrap(&sk->sk_drops);
}
static inline void sk_drops_add(struct sock *sk, const struct sk_buff *skb)
{
int segs = max_t(u16, 1, skb_shinfo(skb)->gso_segs);
- atomic_add(segs, &sk->sk_drops);
+ atomic_add_wrap(segs, &sk->sk_drops);
}
void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
diff --git a/include/net/tcp.h b/include/net/tcp.h
index f83b7f2..64a2571 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1919,7 +1919,7 @@ static inline void tcp_segs_in(struct tcp_sock *tp, const struct sk_buff *skb)
*/
static inline void tcp_listendrop(const struct sock *sk)
{
- atomic_inc(&((struct sock *)sk)->sk_drops);
+ atomic_inc_wrap(&((struct sock *)sk)->sk_drops);
__NET_INC_STATS(sock_net(sk), LINUX_MIB_LISTENDROPS);
}
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 31947b9..d24fca3 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -528,7 +528,7 @@ struct xfrm_policy {
struct timer_list timer;
struct flow_cache_object flo;
- atomic_t genid;
+ atomic_wrap_t genid;
u32 priority;
u32 index;
struct xfrm_mark mark;
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index e2d18d0..445263c7 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -368,7 +368,7 @@ static int batadv_iv_ogm_iface_enable(struct batadv_hard_iface *hard_iface)
/* randomize initial seqno to avoid collision */
get_random_bytes(&random_seqno, sizeof(random_seqno));
- atomic_set(&hard_iface->bat_iv.ogm_seqno, random_seqno);
+ atomic_set_wrap(&hard_iface->bat_iv.ogm_seqno, random_seqno);
hard_iface->bat_iv.ogm_buff_len = BATADV_OGM_HLEN;
ogm_buff = kmalloc(hard_iface->bat_iv.ogm_buff_len, GFP_ATOMIC);
@@ -953,9 +953,9 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
batadv_ogm_packet->tvlv_len = htons(tvlv_len);
/* change sequence number to network order */
- seqno = (u32)atomic_read(&hard_iface->bat_iv.ogm_seqno);
+ seqno = (u32)atomic_read_wrap(&hard_iface->bat_iv.ogm_seqno);
batadv_ogm_packet->seqno = htonl(seqno);
- atomic_inc(&hard_iface->bat_iv.ogm_seqno);
+ atomic_inc_wrap(&hard_iface->bat_iv.ogm_seqno);
batadv_iv_ogm_slide_own_bcast_window(hard_iface);
@@ -1653,7 +1653,7 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset,
return;
/* could be changed by schedule_own_packet() */
- if_incoming_seqno = atomic_read(&if_incoming->bat_iv.ogm_seqno);
+ if_incoming_seqno = atomic_read_wrap(&if_incoming->bat_iv.ogm_seqno);
if (ogm_packet->flags & BATADV_DIRECTLINK)
has_directlink_flag = true;
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 0934730..0f45636 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -469,7 +469,8 @@ int batadv_frag_send_packet(struct sk_buff *skb,
frag_header.packet_type = BATADV_UNICAST_FRAG;
frag_header.version = BATADV_COMPAT_VERSION;
frag_header.ttl = BATADV_TTL;
- frag_header.seqno = htons(atomic_inc_return(&bat_priv->frag_seqno));
+ frag_header.seqno = htons(atomic_inc_return_wrap(
+ &bat_priv->frag_seqno));
frag_header.reserved = 0;
frag_header.no = 0;
frag_header.total_size = htons(skb->len);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 49e16b6..1716004 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -333,7 +333,7 @@ static int batadv_interface_tx(struct sk_buff *skb,
primary_if->net_dev->dev_addr);
/* set broadcast sequence number */
- seqno = atomic_inc_return(&bat_priv->bcast_seqno);
+ seqno = atomic_inc_return_wrap(&bat_priv->bcast_seqno);
bcast_packet->seqno = htonl(seqno);
batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay);
@@ -813,7 +813,7 @@ static int batadv_softif_init_late(struct net_device *dev)
atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
- atomic_set(&bat_priv->bcast_seqno, 1);
+ atomic_set_wrap(&bat_priv->bcast_seqno, 1);
atomic_set(&bat_priv->tt.vn, 0);
atomic_set(&bat_priv->tt.local_changes, 0);
atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
@@ -829,7 +829,7 @@ static int batadv_softif_init_late(struct net_device *dev)
/* randomize initial seqno to avoid collision */
get_random_bytes(&random_seqno, sizeof(random_seqno));
- atomic_set(&bat_priv->frag_seqno, random_seqno);
+ atomic_set_wrap(&bat_priv->frag_seqno, random_seqno);
bat_priv->primary_if = NULL;
bat_priv->num_ifaces = 0;
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index b3dd1a3..e7debc5 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -85,7 +85,7 @@ enum batadv_dhcp_recipient {
struct batadv_hard_iface_bat_iv {
unsigned char *ogm_buff;
int ogm_buff_len;
- atomic_t ogm_seqno;
+ atomic_wrap_t ogm_seqno;
};
/**
@@ -1040,7 +1040,7 @@ struct batadv_priv {
atomic_t bonding;
atomic_t fragmentation;
atomic_t packet_size_max;
- atomic_t frag_seqno;
+ atomic_wrap_t frag_seqno;
#ifdef CONFIG_BATMAN_ADV_BLA
atomic_t bridge_loop_avoidance;
#endif
@@ -1057,7 +1057,7 @@ struct batadv_priv {
#endif
u32 isolation_mark;
u32 isolation_mark_mask;
- atomic_t bcast_seqno;
+ atomic_wrap_t bcast_seqno;
atomic_t bcast_queue_left;
atomic_t batman_queue_left;
char num_ifaces;
diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
index f5afda1..d40394a 100644
--- a/net/caif/cfctrl.c
+++ b/net/caif/cfctrl.c
@@ -43,8 +43,8 @@ struct cflayer *cfctrl_create(void)
memset(&dev_info, 0, sizeof(dev_info));
dev_info.id = 0xff;
cfsrvl_init(&this->serv, 0, &dev_info, false);
- atomic_set(&this->req_seq_no, 1);
- atomic_set(&this->rsp_seq_no, 1);
+ atomic_set_wrap(&this->req_seq_no, 1);
+ atomic_set_wrap(&this->rsp_seq_no, 1);
this->serv.layer.receive = cfctrl_recv;
sprintf(this->serv.layer.name, "ctrl");
this->serv.layer.ctrlcmd = cfctrl_ctrlcmd;
@@ -130,8 +130,8 @@ static void cfctrl_insert_req(struct cfctrl *ctrl,
struct cfctrl_request_info *req)
{
spin_lock_bh(&ctrl->info_list_lock);
- atomic_inc(&ctrl->req_seq_no);
- req->sequence_no = atomic_read(&ctrl->req_seq_no);
+ atomic_inc_wrap(&ctrl->req_seq_no);
+ req->sequence_no = atomic_read_wrap(&ctrl->req_seq_no);
list_add_tail(&req->list, &ctrl->list);
spin_unlock_bh(&ctrl->info_list_lock);
}
@@ -149,8 +149,7 @@ static struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
if (p != first)
pr_warn("Requests are not received in order\n");
- atomic_set(&ctrl->rsp_seq_no,
- p->sequence_no);
+ atomic_set_wrap(&ctrl->rsp_seq_no, p->sequence_no);
list_del(&p->list);
goto out;
}
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index a550289..9e0a0dd 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -187,7 +187,7 @@ static void con_fault(struct ceph_connection *con);
#define MAX_ADDR_STR_LEN 64 /* 54 is enough */
static char addr_str[ADDR_STR_COUNT][MAX_ADDR_STR_LEN];
-static atomic_t addr_str_seq = ATOMIC_INIT(0);
+static atomic_wrap_t addr_str_seq = ATOMIC_INIT(0);
static struct page *zero_page; /* used in certain error cases */
@@ -198,7 +198,7 @@ const char *ceph_pr_addr(const struct sockaddr_storage *ss)
struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
- i = atomic_inc_return(&addr_str_seq) & ADDR_STR_COUNT_MASK;
+ i = atomic_inc_return_wrap(&addr_str_seq) & ADDR_STR_COUNT_MASK;
s = addr_str[i];
switch (ss->ss_family) {
diff --git a/net/core/datagram.c b/net/core/datagram.c
index b7de71f..4fef0c8 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -360,7 +360,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags)
}
kfree_skb(skb);
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
sk_mem_reclaim_partial(sk);
return err;
diff --git a/net/core/dev.c b/net/core/dev.c
index 4bc19a1..3465949 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1768,7 +1768,7 @@ int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
{
if (skb_orphan_frags(skb, GFP_ATOMIC) ||
unlikely(!is_skb_forwardable(dev, skb))) {
- atomic_long_inc(&dev->rx_dropped);
+ atomic_long_inc_wrap(&dev->rx_dropped);
kfree_skb(skb);
return NET_RX_DROP;
}
@@ -3005,7 +3005,7 @@ static struct sk_buff *validate_xmit_skb(struct sk_buff *skb, struct net_device
out_kfree_skb:
kfree_skb(skb);
out_null:
- atomic_long_inc(&dev->tx_dropped);
+ atomic_long_inc_wrap(&dev->tx_dropped);
return NULL;
}
@@ -3415,7 +3415,7 @@ static int __dev_queue_xmit(struct sk_buff *skb, void *accel_priv)
rc = -ENETDOWN;
rcu_read_unlock_bh();
- atomic_long_inc(&dev->tx_dropped);
+ atomic_long_inc_wrap(&dev->tx_dropped);
kfree_skb_list(skb);
return rc;
out:
@@ -3768,7 +3768,7 @@ static int enqueue_to_backlog(struct sk_buff *skb, int cpu,
local_irq_restore(flags);
- atomic_long_inc(&skb->dev->rx_dropped);
+ atomic_long_inc_wrap(&skb->dev->rx_dropped);
kfree_skb(skb);
return NET_RX_DROP;
}
@@ -4212,9 +4212,9 @@ static int __netif_receive_skb_core(struct sk_buff *skb, bool pfmemalloc)
} else {
drop:
if (!deliver_exact)
- atomic_long_inc(&skb->dev->rx_dropped);
+ atomic_long_inc_wrap(&skb->dev->rx_dropped);
else
- atomic_long_inc(&skb->dev->rx_nohandler);
+ atomic_long_inc_wrap(&skb->dev->rx_nohandler);
kfree_skb(skb);
/* Jamal, now you will not able to escape explaining
* me how you were going to use this. :-)
@@ -7537,9 +7537,9 @@ struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
} else {
netdev_stats_to_stats64(storage, &dev->stats);
}
- storage->rx_dropped += atomic_long_read(&dev->rx_dropped);
- storage->tx_dropped += atomic_long_read(&dev->tx_dropped);
- storage->rx_nohandler += atomic_long_read(&dev->rx_nohandler);
+ storage->rx_dropped += atomic_long_read_wrap(&dev->rx_dropped);
+ storage->tx_dropped += atomic_long_read_wrap(&dev->tx_dropped);
+ storage->rx_nohandler += atomic_long_read_wrap(&dev->rx_nohandler);
return storage;
}
EXPORT_SYMBOL(dev_get_stats);
diff --git a/net/core/flow.c b/net/core/flow.c
index 3937b1b..ee91374 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -65,7 +65,7 @@ static void flow_cache_new_hashrnd(unsigned long arg)
static int flow_entry_valid(struct flow_cache_entry *fle,
struct netns_xfrm *xfrm)
{
- if (atomic_read(&xfrm->flow_cache_genid) != fle->genid)
+ if (atomic_read_wrap(&xfrm->flow_cache_genid) != fle->genid)
return 0;
if (fle->object && !fle->object->ops->check(fle->object))
return 0;
@@ -238,7 +238,7 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir,
if (fcp->hash_count > 2 * fc->high_watermark ||
atomic_read(&net->xfrm.flow_cache_gc_count) > fc->high_watermark) {
- atomic_inc(&net->xfrm.flow_cache_genid);
+ atomic_inc_wrap(&net->xfrm.flow_cache_genid);
flo = ERR_PTR(-ENOBUFS);
goto ret_object;
}
@@ -253,7 +253,8 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir,
hlist_add_head(&fle->u.hlist, &fcp->hash_table[hash]);
fcp->hash_count++;
}
- } else if (likely(fle->genid == atomic_read(&net->xfrm.flow_cache_genid))) {
+ } else if (likely(fle->genid == atomic_read_wrap(
+ &net->xfrm.flow_cache_genid))) {
flo = fle->object;
if (!flo)
goto ret_object;
@@ -274,7 +275,7 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir,
}
flo = resolver(net, key, family, dir, flo, ctx);
if (fle) {
- fle->genid = atomic_read(&net->xfrm.flow_cache_genid);
+ fle->genid = atomic_read_wrap(&net->xfrm.flow_cache_genid);
if (!IS_ERR(flo))
fle->object = flo;
else
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 6e4f347..c1a9bfc 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -290,7 +290,7 @@ static ssize_t carrier_changes_show(struct device *dev,
{
struct net_device *netdev = to_net_dev(dev);
return sprintf(buf, fmt_dec,
- atomic_read(&netdev->carrier_changes));
+ atomic_read_wrap(&netdev->carrier_changes));
}
static DEVICE_ATTR_RO(carrier_changes);
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 53599bd..dab9d4d 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -382,7 +382,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
struct udphdr *udph;
struct iphdr *iph;
struct ethhdr *eth;
- static atomic_t ip_ident;
+ static atomic_wrap_t ip_ident;
struct ipv6hdr *ip6h;
WARN_ON_ONCE(!irqs_disabled());
@@ -455,7 +455,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
put_unaligned(0x45, (unsigned char *)iph);
iph->tos = 0;
put_unaligned(htons(ip_len), &(iph->tot_len));
- iph->id = htons(atomic_inc_return(&ip_ident));
+ iph->id = htons(atomic_inc_return_wrap(&ip_ident));
iph->frag_off = 0;
iph->ttl = 64;
iph->protocol = IPPROTO_UDP;
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index fb7348f..0f04cd5 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1322,7 +1322,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
(dev->ifalias &&
nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
nla_put_u32(skb, IFLA_CARRIER_CHANGES,
- atomic_read(&dev->carrier_changes)) ||
+ atomic_read_wrap(&dev->carrier_changes)) ||
nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down))
goto nla_put_failure;
diff --git a/net/core/sock.c b/net/core/sock.c
index c73e28f..10cf15b 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -411,13 +411,13 @@ int __sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
struct sk_buff_head *list = &sk->sk_receive_queue;
if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
trace_sock_rcvqueue_full(sk, skb);
return -ENOMEM;
}
if (!sk_rmem_schedule(sk, skb, skb->truesize)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
return -ENOBUFS;
}
@@ -463,7 +463,7 @@ int __sk_receive_skb(struct sock *sk, struct sk_buff *skb,
skb->dev = NULL;
if (sk_rcvqueues_full(sk, sk->sk_rcvbuf)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
goto discard_and_relse;
}
if (nested)
@@ -481,7 +481,7 @@ int __sk_receive_skb(struct sock *sk, struct sk_buff *skb,
mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
} else if (sk_add_backlog(sk, skb, sk->sk_rcvbuf)) {
bh_unlock_sock(sk);
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
goto discard_and_relse;
}
@@ -1516,7 +1516,7 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
newsk->sk_dst_cache = NULL;
newsk->sk_wmem_queued = 0;
newsk->sk_forward_alloc = 0;
- atomic_set(&newsk->sk_drops, 0);
+ atomic_set_wrap(&newsk->sk_drops, 0);
newsk->sk_send_head = NULL;
newsk->sk_userlocks = sk->sk_userlocks & ~SOCK_BINDPORT_LOCK;
@@ -1545,7 +1545,7 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
newsk->sk_err = 0;
newsk->sk_priority = 0;
newsk->sk_incoming_cpu = raw_smp_processor_id();
- atomic64_set(&newsk->sk_cookie, 0);
+ atomic64_set_wrap(&newsk->sk_cookie, 0);
mem_cgroup_sk_alloc(newsk);
cgroup_sk_alloc(&newsk->sk_cgrp_data);
@@ -2475,7 +2475,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
*/
smp_wmb();
atomic_set(&sk->sk_refcnt, 1);
- atomic_set(&sk->sk_drops, 0);
+ atomic_set_wrap(&sk->sk_drops, 0);
}
EXPORT_SYMBOL(sock_init_data);
diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c
index 6b10573..b726bcb 100644
--- a/net/core/sock_diag.c
+++ b/net/core/sock_diag.c
@@ -22,12 +22,12 @@ static struct workqueue_struct *broadcast_wq;
static u64 sock_gen_cookie(struct sock *sk)
{
while (1) {
- u64 res = atomic64_read(&sk->sk_cookie);
+ u64 res = atomic64_read_wrap(&sk->sk_cookie);
if (res)
return res;
- res = atomic64_inc_return(&sock_net(sk)->cookie_gen);
- atomic64_cmpxchg(&sk->sk_cookie, 0, res);
+ res = atomic64_inc_return_wrap(&sock_net(sk)->cookie_gen);
+ atomic64_cmpxchg_wrap(&sk->sk_cookie, 0, res);
}
}
@@ -67,7 +67,7 @@ int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attrtype)
mem[SK_MEMINFO_WMEM_QUEUED] = sk->sk_wmem_queued;
mem[SK_MEMINFO_OPTMEM] = atomic_read(&sk->sk_omem_alloc);
mem[SK_MEMINFO_BACKLOG] = sk->sk_backlog.len;
- mem[SK_MEMINFO_DROPS] = atomic_read(&sk->sk_drops);
+ mem[SK_MEMINFO_DROPS] = atomic_read_wrap(&sk->sk_drops);
return nla_put(skb, attrtype, sizeof(mem), &mem);
}
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 062a67c..19201f0 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1605,7 +1605,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
idx = 0;
head = &net->dev_index_head[h];
rcu_read_lock();
- cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
+ cb->seq = atomic_read_wrap(&net->ipv4.dev_addr_genid) ^
net->dev_base_seq;
hlist_for_each_entry_rcu(dev, head, index_hlist) {
if (idx < s_idx)
@@ -1939,7 +1939,7 @@ static int inet_netconf_dump_devconf(struct sk_buff *skb,
idx = 0;
head = &net->dev_index_head[h];
rcu_read_lock();
- cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
+ cb->seq = atomic_read_wrap(&net->ipv4.dev_addr_genid) ^
net->dev_base_seq;
hlist_for_each_entry_rcu(dev, head, index_hlist) {
if (idx < s_idx)
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index c3b8047..f3b24aa 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1122,12 +1122,12 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
#ifdef CONFIG_IP_ROUTE_MULTIPATH
fib_sync_up(dev, RTNH_F_DEAD);
#endif
- atomic_inc(&net->ipv4.dev_addr_genid);
+ atomic_inc_wrap(&net->ipv4.dev_addr_genid);
rt_cache_flush(dev_net(dev));
break;
case NETDEV_DOWN:
fib_del_ifaddr(ifa, NULL);
- atomic_inc(&net->ipv4.dev_addr_genid);
+ atomic_inc_wrap(&net->ipv4.dev_addr_genid);
if (!ifa->ifa_dev->ifa_list) {
/* Last address was deleted from this interface.
* Disable IP.
@@ -1167,7 +1167,7 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
#ifdef CONFIG_IP_ROUTE_MULTIPATH
fib_sync_up(dev, RTNH_F_DEAD);
#endif
- atomic_inc(&net->ipv4.dev_addr_genid);
+ atomic_inc_wrap(&net->ipv4.dev_addr_genid);
rt_cache_flush(net);
break;
case NETDEV_DOWN:
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 388d3e2..ab24e60 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -916,7 +916,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh)
nh->nh_saddr = inet_select_addr(nh->nh_dev,
nh->nh_gw,
nh->nh_parent->fib_scope);
- nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid);
+ nh->nh_saddr_genid = atomic_read_wrap(&net->ipv4.dev_addr_genid);
return nh->nh_saddr;
}
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 61a9dee..2d327aa 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -666,8 +666,8 @@ struct sock *inet_csk_clone_lock(const struct sock *sk,
sock_reset_flag(newsk, SOCK_RCU_FREE);
newsk->sk_mark = inet_rsk(req)->ir_mark;
- atomic64_set(&newsk->sk_cookie,
- atomic64_read(&inet_rsk(req)->ir_cookie));
+ atomic64_set_wrap(&newsk->sk_cookie, atomic64_read_wrap(
+ &inet_rsk(req)->ir_cookie));
newicsk->icsk_retransmits = 0;
newicsk->icsk_backoff = 0;
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index ddcd56c..e36fd88 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -186,7 +186,8 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk,
tw->tw_ipv6only = 0;
tw->tw_transparent = inet->transparent;
tw->tw_prot = sk->sk_prot_creator;
- atomic64_set(&tw->tw_cookie, atomic64_read(&sk->sk_cookie));
+ atomic64_set_wrap(&tw->tw_cookie, atomic64_read_wrap(
+ &sk->sk_cookie));
twsk_net_set(tw, sock_net(sk));
setup_pinned_timer(&tw->tw_timer, tw_timer_handler,
(unsigned long)tw);
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index 86fa458..1bd7d85 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -445,7 +445,7 @@ struct inet_peer *inet_getpeer(struct inet_peer_base *base,
if (p) {
p->daddr = *daddr;
atomic_set(&p->refcnt, 1);
- atomic_set(&p->rid, 0);
+ atomic_set_wrap(&p->rid, 0);
p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW;
p->rate_tokens = 0;
/* 60*HZ is arbitrary, but chosen enough high so that the first
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index bbe7f72..2d58187 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -282,7 +282,7 @@ static int ip_frag_too_far(struct ipq *qp)
return 0;
start = qp->rid;
- end = atomic_inc_return(&peer->rid);
+ end = atomic_inc_return_wrap(&peer->rid);
qp->rid = end;
rc = qp->q.fragments && (end - start) > max;
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 7cf7d6e..5c0a197 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -1119,7 +1119,7 @@ static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
0, sock_i_ino(sp),
atomic_read(&sp->sk_refcnt), sp,
- atomic_read(&sp->sk_drops));
+ atomic_read_wrap(&sp->sk_drops));
}
static int ping_v4_seq_show(struct seq_file *seq, void *v)
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 90a85c9..691dbd3 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -325,7 +325,7 @@ static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
int raw_rcv(struct sock *sk, struct sk_buff *skb)
{
if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
kfree_skb(skb);
return NET_RX_DROP;
}
@@ -1029,7 +1029,8 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
0, 0L, 0,
from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
0, sock_i_ino(sp),
- atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
+ atomic_read(&sp->sk_refcnt), sp,
+ atomic_read_wrap(&sp->sk_drops));
}
static int raw_seq_show(struct seq_file *seq, void *v)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 62d4d90..099bd83 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -463,7 +463,7 @@ static struct neighbour *ipv4_neigh_lookup(const struct dst_entry *dst,
#define IP_IDENTS_SZ 2048u
-static atomic_t *ip_idents __read_mostly;
+static atomic_wrap_t *ip_idents __read_mostly;
static u32 *ip_tstamps __read_mostly;
/* In order to protect privacy, we add a perturbation to identifiers
@@ -473,7 +473,7 @@ static u32 *ip_tstamps __read_mostly;
u32 ip_idents_reserve(u32 hash, int segs)
{
u32 *p_tstamp = ip_tstamps + hash % IP_IDENTS_SZ;
- atomic_t *p_id = ip_idents + hash % IP_IDENTS_SZ;
+ atomic_wrap_t *p_id = ip_idents + hash % IP_IDENTS_SZ;
u32 old = ACCESS_ONCE(*p_tstamp);
u32 now = (u32)jiffies;
u32 new, delta = 0;
@@ -483,9 +483,9 @@ u32 ip_idents_reserve(u32 hash, int segs)
/* Do not use atomic_add_return() as it makes UBSAN unhappy */
do {
- old = (u32)atomic_read(p_id);
+ old = (u32)atomic_read_wrap(p_id);
new = old + delta + segs;
- } while (atomic_cmpxchg(p_id, old, new) != old);
+ } while (atomic_cmpxchg_wrap(p_id, old, new) != old);
return new - segs;
}
@@ -2824,8 +2824,8 @@ static __net_initdata struct pernet_operations sysctl_route_ops = {
static __net_init int rt_genid_init(struct net *net)
{
- atomic_set(&net->ipv4.rt_genid, 0);
- atomic_set(&net->fnhe_genid, 0);
+ atomic_set_wrap(&net->ipv4.rt_genid, 0);
+ atomic_set_wrap(&net->fnhe_genid, 0);
get_random_bytes(&net->ipv4.dev_addr_genid,
sizeof(net->ipv4.dev_addr_genid));
return 0;
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index a27b9c0..287f8d1 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -6215,7 +6215,7 @@ struct request_sock *inet_reqsk_alloc(const struct request_sock_ops *ops,
#if IS_ENABLED(CONFIG_IPV6)
ireq->pktopts = NULL;
#endif
- atomic64_set(&ireq->ir_cookie, 0);
+ atomic64_set_wrap(&ireq->ir_cookie, 0);
ireq->ireq_state = TCP_NEW_SYN_RECV;
write_pnet(&ireq->ireq_net, sock_net(sk_listener));
ireq->ireq_family = sk_listener->sk_family;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 7d96dc2..145846f 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1194,7 +1194,7 @@ static int first_packet_length(struct sock *sk)
IS_UDPLITE(sk));
__UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS,
IS_UDPLITE(sk));
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
__skb_unlink(skb, rcvq);
__skb_queue_tail(&list_kill, skb);
}
@@ -1299,7 +1299,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock,
if (unlikely(err)) {
trace_kfree_skb(skb, udp_recvmsg);
if (!peeked) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
UDP_INC_STATS(sock_net(sk),
UDP_MIB_INERRORS, is_udplite);
}
@@ -1604,7 +1604,7 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
__UDP_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
drop:
__UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
kfree_skb(skb);
return -1;
}
@@ -1662,7 +1662,7 @@ static int __udp4_lib_mcast_deliver(struct net *net, struct sk_buff *skb,
nskb = skb_clone(skb, GFP_ATOMIC);
if (unlikely(!nskb)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
__UDP_INC_STATS(net, UDP_MIB_RCVBUFERRORS,
IS_UDPLITE(sk));
__UDP_INC_STATS(net, UDP_MIB_INERRORS,
@@ -2381,7 +2381,7 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
0, sock_i_ino(sp),
atomic_read(&sp->sk_refcnt), sp,
- atomic_read(&sp->sk_drops));
+ atomic_read_wrap(&sp->sk_drops));
}
int udp4_seq_show(struct seq_file *seq, void *v)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d8983e1..1084a86 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -673,7 +673,7 @@ static int inet6_netconf_dump_devconf(struct sk_buff *skb,
idx = 0;
head = &net->dev_index_head[h];
rcu_read_lock();
- cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^
+ cb->seq = atomic_read_wrap(&net->ipv6.dev_addr_genid) ^
net->dev_base_seq;
hlist_for_each_entry_rcu(dev, head, index_hlist) {
if (idx < s_idx)
@@ -4773,7 +4773,8 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
s_ip_idx = ip_idx = cb->args[2];
rcu_read_lock();
- cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
+ cb->seq = atomic_read_wrap(
+ &net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
idx = 0;
head = &net->dev_index_head[h];
@@ -5457,7 +5458,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
rt_genid_bump_ipv6(net);
break;
}
- atomic_inc(&net->ipv6.dev_addr_genid);
+ atomic_inc_wrap(&net->ipv6.dev_addr_genid);
}
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 46ad699..635b455 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -796,7 +796,7 @@ static int __net_init inet6_net_init(struct net *net)
net->ipv6.sysctl.idgen_retries = 3;
net->ipv6.sysctl.idgen_delay = 1 * HZ;
net->ipv6.sysctl.flowlabel_state_ranges = 0;
- atomic_set(&net->ipv6.fib6_sernum, 1);
+ atomic_set_wrap(&net->ipv6.fib6_sernum, 1);
err = ipv6_init_mibs(net);
if (err)
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 37874e2..05a0e03 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -1032,5 +1032,5 @@ void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp,
0,
sock_i_ino(sp),
atomic_read(&sp->sk_refcnt), sp,
- atomic_read(&sp->sk_drops));
+ atomic_read_wrap(&sp->sk_drops));
}
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index ef54852..5932a9a 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -98,9 +98,9 @@ static int fib6_new_sernum(struct net *net)
int new, old;
do {
- old = atomic_read(&net->ipv6.fib6_sernum);
+ old = atomic_read_wrap(&net->ipv6.fib6_sernum);
new = old < INT_MAX ? old + 1 : 1;
- } while (atomic_cmpxchg(&net->ipv6.fib6_sernum,
+ } while (atomic_cmpxchg_wrap(&net->ipv6.fib6_sernum,
old, new) != old);
return new;
}
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 54404f0..0fcc926 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -389,7 +389,7 @@ static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) &&
skb_checksum_complete(skb)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
kfree_skb(skb);
return NET_RX_DROP;
}
@@ -417,7 +417,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
struct raw6_sock *rp = raw6_sk(sk);
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
kfree_skb(skb);
return NET_RX_DROP;
}
@@ -441,7 +441,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
if (inet->hdrincl) {
if (skb_checksum_complete(skb)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
kfree_skb(skb);
return NET_RX_DROP;
}
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 9aa7c1c..45c01a8 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -380,7 +380,7 @@ int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
if (unlikely(err)) {
trace_kfree_skb(skb, udpv6_recvmsg);
if (!peeked) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
if (is_udp4)
UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS,
is_udplite);
@@ -646,7 +646,7 @@ int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
__UDP6_INC_STATS(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
drop:
__UDP6_INC_STATS(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
kfree_skb(skb);
return -1;
}
@@ -727,7 +727,7 @@ static int __udp6_lib_mcast_deliver(struct net *net, struct sk_buff *skb,
}
nskb = skb_clone(skb, GFP_ATOMIC);
if (unlikely(!nskb)) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
__UDP6_INC_STATS(net, UDP_MIB_RCVBUFERRORS,
IS_UDPLITE(sk));
__UDP6_INC_STATS(net, UDP_MIB_INERRORS,
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 02b45a8..16f0511 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -688,10 +688,11 @@ static void __iucv_auto_name(struct iucv_sock *iucv)
{
char name[12];
- sprintf(name, "%08x", atomic_inc_return(&iucv_sk_list.autobind_name));
+ sprintf(name, "%08x", atomic_inc_return_wrap(
+ &iucv_sk_list.autobind_name));
while (__iucv_get_sock_by_name(name)) {
sprintf(name, "%08x",
- atomic_inc_return(&iucv_sk_list.autobind_name));
+ atomic_inc_return_wrap(&iucv_sk_list.autobind_name));
}
memcpy(iucv->src_name, name, 8);
}
diff --git a/net/key/af_key.c b/net/key/af_key.c
index f9c9ecb..039a50f 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3050,10 +3050,10 @@ static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, const struc
static u32 get_acqseq(void)
{
u32 res;
- static atomic_t acqseq;
+ static atomic_wrap_t acqseq;
do {
- res = atomic_inc_return(&acqseq);
+ res = atomic_inc_return_wrap(&acqseq);
} while (!res);
return res;
}
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index 965f7e3..aaea87f 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -42,12 +42,12 @@ struct l2tp_eth {
struct sock *tunnel_sock;
struct l2tp_session *session;
struct list_head list;
- atomic_long_t tx_bytes;
- atomic_long_t tx_packets;
- atomic_long_t tx_dropped;
- atomic_long_t rx_bytes;
- atomic_long_t rx_packets;
- atomic_long_t rx_errors;
+ atomic_long_wrap_t tx_bytes;
+ atomic_long_wrap_t tx_packets;
+ atomic_long_wrap_t tx_dropped;
+ atomic_long_wrap_t rx_bytes;
+ atomic_long_wrap_t rx_packets;
+ atomic_long_wrap_t rx_errors;
};
/* via l2tp_session_priv() */
@@ -98,10 +98,10 @@ static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
int ret = l2tp_xmit_skb(session, skb, session->hdr_len);
if (likely(ret == NET_XMIT_SUCCESS)) {
- atomic_long_add(len, &priv->tx_bytes);
- atomic_long_inc(&priv->tx_packets);
+ atomic_long_add_wrap(len, &priv->tx_bytes);
+ atomic_long_inc_wrap(&priv->tx_packets);
} else {
- atomic_long_inc(&priv->tx_dropped);
+ atomic_long_inc_wrap(&priv->tx_dropped);
}
return NETDEV_TX_OK;
}
@@ -111,12 +111,12 @@ static struct rtnl_link_stats64 *l2tp_eth_get_stats64(struct net_device *dev,
{
struct l2tp_eth *priv = netdev_priv(dev);
- stats->tx_bytes = atomic_long_read(&priv->tx_bytes);
- stats->tx_packets = atomic_long_read(&priv->tx_packets);
- stats->tx_dropped = atomic_long_read(&priv->tx_dropped);
- stats->rx_bytes = atomic_long_read(&priv->rx_bytes);
- stats->rx_packets = atomic_long_read(&priv->rx_packets);
- stats->rx_errors = atomic_long_read(&priv->rx_errors);
+ stats->tx_bytes = atomic_long_read_wrap(&priv->tx_bytes);
+ stats->tx_packets = atomic_long_read_wrap(&priv->tx_packets);
+ stats->tx_dropped = atomic_long_read_wrap(&priv->tx_dropped);
+ stats->rx_bytes = atomic_long_read_wrap(&priv->rx_bytes);
+ stats->rx_packets = atomic_long_read_wrap(&priv->rx_packets);
+ stats->rx_errors = atomic_long_read_wrap(&priv->rx_errors);
return stats;
}
@@ -167,15 +167,15 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
nf_reset(skb);
if (dev_forward_skb(dev, skb) == NET_RX_SUCCESS) {
- atomic_long_inc(&priv->rx_packets);
- atomic_long_add(data_len, &priv->rx_bytes);
+ atomic_long_inc_wrap(&priv->rx_packets);
+ atomic_long_add_wrap(data_len, &priv->rx_bytes);
} else {
- atomic_long_inc(&priv->rx_errors);
+ atomic_long_inc_wrap(&priv->rx_errors);
}
return;
error:
- atomic_long_inc(&priv->rx_errors);
+ atomic_long_inc_wrap(&priv->rx_errors);
kfree_skb(skb);
}
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 096a451..8da8794 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -591,7 +591,7 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
/* Increase the refcnt counter of the dest */
ip_vs_dest_hold(dest);
- conn_flags = atomic_read(&dest->conn_flags);
+ conn_flags = atomic_read_wrap(&dest->conn_flags);
if (cp->protocol != IPPROTO_UDP)
conn_flags &= ~IP_VS_CONN_F_ONE_PACKET;
flags = cp->flags;
@@ -945,7 +945,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p, int dest_af,
cp->control = NULL;
atomic_set(&cp->n_control, 0);
- atomic_set(&cp->in_pkts, 0);
+ atomic_set_wrap(&cp->in_pkts, 0);
cp->packet_xmit = NULL;
cp->app = NULL;
@@ -1252,7 +1252,7 @@ static inline int todrop_entry(struct ip_vs_conn *cp)
/* Don't drop the entry if its number of incoming packets is not
located in [0, 8] */
- i = atomic_read(&cp->in_pkts);
+ i = atomic_read_wrap(&cp->in_pkts);
if (i > 8 || i < 0) return 0;
if (!todrop_rate[i]) return 0;
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 2c1b498..a1fdff2 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -613,9 +613,9 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
/* do not touch skb anymore */
if ((cp->flags & IP_VS_CONN_F_ONE_PACKET) && cp->control)
- atomic_inc(&cp->control->in_pkts);
+ atomic_inc_wrap(&cp->control->in_pkts);
else
- atomic_inc(&cp->in_pkts);
+ atomic_inc_wrap(&cp->in_pkts);
ip_vs_conn_put(cp);
return ret;
}
@@ -1991,13 +1991,13 @@ ip_vs_in(struct netns_ipvs *ipvs, unsigned int hooknum, struct sk_buff *skb, int
if (cp->flags & IP_VS_CONN_F_ONE_PACKET)
pkts = sysctl_sync_threshold(ipvs);
else
- pkts = atomic_add_return(1, &cp->in_pkts);
+ pkts = atomic_add_return_wrap(1, &cp->in_pkts);
if (ipvs->sync_state & IP_VS_STATE_MASTER)
ip_vs_sync_conn(ipvs, cp, pkts);
else if ((cp->flags & IP_VS_CONN_F_ONE_PACKET) && cp->control)
/* increment is done inside ip_vs_sync_conn too */
- atomic_inc(&cp->control->in_pkts);
+ atomic_inc_wrap(&cp->control->in_pkts);
ip_vs_conn_put(cp);
return ret;
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index c3c809b..534e6a1 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -841,7 +841,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
*/
ip_vs_rs_hash(ipvs, dest);
}
- atomic_set(&dest->conn_flags, conn_flags);
+ atomic_set_wrap(&dest->conn_flags, conn_flags);
/* bind the service */
old_svc = rcu_dereference_protected(dest->svc, 1);
@@ -2083,7 +2083,8 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
" %-7s %-6d %-10d %-10d\n",
&dest->addr.in6,
ntohs(dest->port),
- ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
+ ip_vs_fwd_name(atomic_read_wrap(
+ &dest->conn_flags)),
atomic_read(&dest->weight),
atomic_read(&dest->activeconns),
atomic_read(&dest->inactconns));
@@ -2094,7 +2095,8 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
"%-7s %-6d %-10d %-10d\n",
ntohl(dest->addr.ip),
ntohs(dest->port),
- ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
+ ip_vs_fwd_name(atomic_read_wrap(
+ &dest->conn_flags)),
atomic_read(&dest->weight),
atomic_read(&dest->activeconns),
atomic_read(&dest->inactconns));
@@ -2603,7 +2605,7 @@ __ip_vs_get_dest_entries(struct netns_ipvs *ipvs, const struct ip_vs_get_dests *
entry.addr = dest->addr.ip;
entry.port = dest->port;
- entry.conn_flags = atomic_read(&dest->conn_flags);
+ entry.conn_flags = atomic_read_wrap(&dest->conn_flags);
entry.weight = atomic_read(&dest->weight);
entry.u_threshold = dest->u_threshold;
entry.l_threshold = dest->l_threshold;
@@ -3196,7 +3198,7 @@ static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest)
if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) ||
nla_put_be16(skb, IPVS_DEST_ATTR_PORT, dest->port) ||
nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD,
- (atomic_read(&dest->conn_flags) &
+ (atomic_read_wrap(&dest->conn_flags) &
IP_VS_CONN_F_FWD_MASK)) ||
nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT,
atomic_read(&dest->weight)) ||
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 1b07578..c469cad 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -611,7 +611,7 @@ static void ip_vs_sync_conn_v0(struct netns_ipvs *ipvs, struct ip_vs_conn *cp,
cp = cp->control;
if (cp) {
if (cp->flags & IP_VS_CONN_F_TEMPLATE)
- pkts = atomic_add_return(1, &cp->in_pkts);
+ pkts = atomic_add_return_wrap(1, &cp->in_pkts);
else
pkts = sysctl_sync_threshold(ipvs);
ip_vs_sync_conn(ipvs, cp, pkts);
@@ -772,7 +772,7 @@ void ip_vs_sync_conn(struct netns_ipvs *ipvs, struct ip_vs_conn *cp, int pkts)
if (!cp)
return;
if (cp->flags & IP_VS_CONN_F_TEMPLATE)
- pkts = atomic_add_return(1, &cp->in_pkts);
+ pkts = atomic_add_return_wrap(1, &cp->in_pkts);
else
pkts = sysctl_sync_threshold(ipvs);
goto sloop;
@@ -919,7 +919,7 @@ static void ip_vs_proc_conn(struct netns_ipvs *ipvs, struct ip_vs_conn_param *pa
if (opt)
memcpy(&cp->in_seq, opt, sizeof(*opt));
- atomic_set(&cp->in_pkts, sysctl_sync_threshold(ipvs));
+ atomic_set_wrap(&cp->in_pkts, sysctl_sync_threshold(ipvs));
cp->state = state;
cp->old_state = cp->state;
/*
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 01d3d89..91d3157 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -1255,7 +1255,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
else
rc = NF_ACCEPT;
/* do not touch skb anymore */
- atomic_inc(&cp->in_pkts);
+ atomic_inc_wrap(&cp->in_pkts);
goto out;
}
@@ -1348,7 +1348,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
else
rc = NF_ACCEPT;
/* do not touch skb anymore */
- atomic_inc(&cp->in_pkts);
+ atomic_inc_wrap(&cp->in_pkts);
goto out;
}
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index eb086a1..5d38f7c 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -85,7 +85,7 @@ static int nfnl_log_net_id __read_mostly;
struct nfnl_log_net {
spinlock_t instances_lock;
struct hlist_head instance_table[INSTANCE_BUCKETS];
- atomic_t global_seq;
+ atomic_wrap_t global_seq;
};
static struct nfnl_log_net *nfnl_log_pernet(struct net *net)
@@ -574,7 +574,7 @@ __build_packet_message(struct nfnl_log_net *log,
/* global sequence number */
if ((inst->flags & NFULNL_CFG_F_SEQ_GLOBAL) &&
nla_put_be32(inst->skb, NFULA_SEQ_GLOBAL,
- htonl(atomic_inc_return(&log->global_seq))))
+ htonl(atomic_inc_return_wrap(&log->global_seq))))
goto nla_put_failure;
if (ct && nfnl_ct->build(inst->skb, ct, ctinfo,
diff --git a/net/netfilter/xt_statistic.c b/net/netfilter/xt_statistic.c
index 11de55e..03793c1 100644
--- a/net/netfilter/xt_statistic.c
+++ b/net/netfilter/xt_statistic.c
@@ -19,7 +19,7 @@
#include <linux/module.h>
struct xt_statistic_priv {
- atomic_t count;
+ atomic_wrap_t count;
} ____cacheline_aligned_in_smp;
MODULE_LICENSE("GPL");
@@ -42,9 +42,10 @@ statistic_mt(const struct sk_buff *skb, struct xt_action_param *par)
break;
case XT_STATISTIC_MODE_NTH:
do {
- oval = atomic_read(&info->master->count);
+ oval = atomic_read_wrap(&info->master->count);
nval = (oval == info->u.nth.every) ? 0 : oval + 1;
- } while (atomic_cmpxchg(&info->master->count, oval, nval) != oval);
+ } while (atomic_cmpxchg_wrap(&info->master->count, oval, nval)
+ != oval);
if (nval == 0)
ret = !ret;
break;
@@ -64,7 +65,7 @@ static int statistic_mt_check(const struct xt_mtchk_param *par)
info->master = kzalloc(sizeof(*info->master), GFP_KERNEL);
if (info->master == NULL)
return -ENOMEM;
- atomic_set(&info->master->count, info->u.nth.count);
+ atomic_set_wrap(&info->master->count, info->u.nth.count);
return 0;
}
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 62bea45..6be0c73 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -287,7 +287,7 @@ static void netlink_overrun(struct sock *sk)
sk->sk_error_report(sk);
}
}
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
}
static void netlink_rcv_wake(struct sock *sk)
@@ -2453,7 +2453,7 @@ static int netlink_seq_show(struct seq_file *seq, void *v)
sk_wmem_alloc_get(s),
nlk->cb_running,
atomic_read(&s->sk_refcnt),
- atomic_read(&s->sk_drops),
+ atomic_read_wrap(&s->sk_drops),
sock_i_ino(s)
);
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 11db0d6..c54c6a2 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -279,7 +279,7 @@ static int packet_direct_xmit(struct sk_buff *skb)
return ret;
drop:
- atomic_long_inc(&dev->tx_dropped);
+ atomic_long_inc_wrap(&dev->tx_dropped);
kfree_skb(skb);
return NET_XMIT_DROP;
}
@@ -2107,7 +2107,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
is_drop_n_account = true;
spin_lock(&sk->sk_receive_queue.lock);
po->stats.stats1.tp_drops++;
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
spin_unlock(&sk->sk_receive_queue.lock);
drop_n_restore:
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 850a86c..88fda61 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -388,7 +388,7 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb)
case PNS_PEP_CTRL_REQ:
if (skb_queue_len(&pn->ctrlreq_queue) >= PNPIPE_CTRLREQ_MAX) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
break;
}
__skb_pull(skb, 4);
@@ -409,7 +409,7 @@ static int pipe_do_rcv(struct sock *sk, struct sk_buff *skb)
}
if (pn->rx_credits == 0) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
err = -ENOBUFS;
break;
}
@@ -579,7 +579,7 @@ static int pipe_handler_do_rcv(struct sock *sk, struct sk_buff *skb)
}
if (pn->rx_credits == 0) {
- atomic_inc(&sk->sk_drops);
+ atomic_inc_wrap(&sk->sk_drops);
err = NET_RX_DROP;
break;
}
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index ffd5f22..1d29fab 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -613,7 +613,7 @@ static int pn_sock_seq_show(struct seq_file *seq, void *v)
from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
sock_i_ino(sk),
atomic_read(&sk->sk_refcnt), sk,
- atomic_read(&sk->sk_drops));
+ atomic_read_wrap(&sk->sk_drops));
}
seq_pad(seq, '\n');
return 0;
diff --git a/net/rds/cong.c b/net/rds/cong.c
index 8398fee..1dcd60a 100644
--- a/net/rds/cong.c
+++ b/net/rds/cong.c
@@ -78,7 +78,7 @@
* finds that the saved generation number is smaller than the global generation
* number, it wakes up the process.
*/
-static atomic_t rds_cong_generation = ATOMIC_INIT(0);
+static atomic_wrap_t rds_cong_generation = ATOMIC_INIT(0);
/*
* Congestion monitoring
@@ -248,7 +248,7 @@ void rds_cong_map_updated(struct rds_cong_map *map, uint64_t portmask)
rdsdebug("waking map %p for %pI4\n",
map, &map->m_addr);
rds_stats_inc(s_cong_update_received);
- atomic_inc(&rds_cong_generation);
+ atomic_inc_wrap(&rds_cong_generation);
if (waitqueue_active(&map->m_waitq))
wake_up(&map->m_waitq);
if (waitqueue_active(&rds_poll_waitq))
@@ -274,7 +274,7 @@ EXPORT_SYMBOL_GPL(rds_cong_map_updated);
int rds_cong_updated_since(unsigned long *recent)
{
- unsigned long gen = atomic_read(&rds_cong_generation);
+ unsigned long gen = atomic_read_wrap(&rds_cong_generation);
if (likely(*recent == gen))
return 0;
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 45ac8e8..bddbee2 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -153,7 +153,7 @@ struct rds_ib_connection {
/* sending acks */
unsigned long i_ack_flags;
#ifdef KERNEL_HAS_ATOMIC64
- atomic64_t i_ack_next; /* next ACK to send */
+ atomic64_wrap_t i_ack_next; /* next ACK to send */
#else
spinlock_t i_ack_lock; /* protect i_ack_next */
u64 i_ack_next; /* next ACK to send */
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 5b2ab95..afad870 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -833,7 +833,7 @@ void rds_ib_conn_path_shutdown(struct rds_conn_path *cp)
/* Clear the ACK state */
clear_bit(IB_ACK_IN_FLIGHT, &ic->i_ack_flags);
#ifdef KERNEL_HAS_ATOMIC64
- atomic64_set(&ic->i_ack_next, 0);
+ atomic64_set_wrap(&ic->i_ack_next, 0);
#else
ic->i_ack_next = 0;
#endif
diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 606a11f..402212a 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -624,7 +624,7 @@ static u64 rds_ib_get_ack(struct rds_ib_connection *ic)
#else
void rds_ib_set_ack(struct rds_ib_connection *ic, u64 seq, int ack_required)
{
- atomic64_set(&ic->i_ack_next, seq);
+ atomic64_set_wrap(&ic->i_ack_next, seq);
if (ack_required) {
smp_mb__before_atomic();
set_bit(IB_ACK_REQUESTED, &ic->i_ack_flags);
@@ -636,7 +636,7 @@ static u64 rds_ib_get_ack(struct rds_ib_connection *ic)
clear_bit(IB_ACK_REQUESTED, &ic->i_ack_flags);
smp_mb__after_atomic();
- return atomic64_read(&ic->i_ack_next);
+ return atomic64_read_wrap(&ic->i_ack_next);
}
#endif
diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c
index 2d59c9b..1e71e8c 100644
--- a/net/rxrpc/af_rxrpc.c
+++ b/net/rxrpc/af_rxrpc.c
@@ -42,7 +42,7 @@ static const struct proto_ops rxrpc_rpc_ops;
u32 rxrpc_epoch;
/* current debugging ID */
-atomic_t rxrpc_debug_id;
+atomic_wrap_t rxrpc_debug_id;
/* count of skbs currently in use */
atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs;
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index f60e355..1167749 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -379,7 +379,7 @@ struct rxrpc_connection {
u32 local_abort; /* local abort code */
u32 remote_abort; /* remote abort code */
int debug_id; /* debug ID for printks */
- atomic_t serial; /* packet serial number counter */
+ atomic_wrap_t serial; /* packet serial number counter */
unsigned int hi_serial; /* highest serial number received */
u32 security_nonce; /* response re-use preventer */
u8 size_align; /* data size alignment (for security) */
@@ -794,7 +794,7 @@ extern const char rxrpc_ack_names[RXRPC_ACK__INVALID + 1][4];
*/
extern atomic_t rxrpc_n_tx_skbs, rxrpc_n_rx_skbs;
extern u32 rxrpc_epoch;
-extern atomic_t rxrpc_debug_id;
+extern atomic_wrap_t rxrpc_debug_id;
extern struct workqueue_struct *rxrpc_workqueue;
/*
diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c
index 4353a29..3a0573d 100644
--- a/net/rxrpc/call_object.c
+++ b/net/rxrpc/call_object.c
@@ -145,7 +145,7 @@ struct rxrpc_call *rxrpc_alloc_call(gfp_t gfp)
spin_lock_init(&call->lock);
rwlock_init(&call->state_lock);
atomic_set(&call->usage, 1);
- call->debug_id = atomic_inc_return(&rxrpc_debug_id);
+ call->debug_id = atomic_inc_return_wrap(&rxrpc_debug_id);
memset(&call->sock_node, 0xed, sizeof(call->sock_node));
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
index 3f9d8d7..53bc973 100644
--- a/net/rxrpc/conn_event.c
+++ b/net/rxrpc/conn_event.c
@@ -112,7 +112,7 @@ static void rxrpc_conn_retransmit_call(struct rxrpc_connection *conn,
iov.iov_base = &pkt;
iov.iov_len = len;
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
pkt.whdr.serial = htonl(serial);
switch (chan->last_type) {
@@ -219,7 +219,7 @@ static int rxrpc_abort_connection(struct rxrpc_connection *conn,
len = iov[0].iov_len + iov[1].iov_len;
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
whdr.serial = htonl(serial);
_proto("Tx CONN ABORT %%%u { %d }", serial, conn->local_abort);
diff --git a/net/rxrpc/conn_object.c b/net/rxrpc/conn_object.c
index e1e83af..728d25f 100644
--- a/net/rxrpc/conn_object.c
+++ b/net/rxrpc/conn_object.c
@@ -51,7 +51,7 @@ struct rxrpc_connection *rxrpc_alloc_connection(gfp_t gfp)
skb_queue_head_init(&conn->rx_queue);
conn->security = &rxrpc_no_security;
spin_lock_init(&conn->state_lock);
- conn->debug_id = atomic_inc_return(&rxrpc_debug_id);
+ conn->debug_id = atomic_inc_return_wrap(&rxrpc_debug_id);
conn->size_align = 4;
conn->idle_timestamp = jiffies;
}
diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index ff4864d..49556dc 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -93,7 +93,7 @@ static struct rxrpc_local *rxrpc_alloc_local(const struct sockaddr_rxrpc *srx)
spin_lock_init(&local->client_conns_lock);
spin_lock_init(&local->lock);
rwlock_init(&local->services_lock);
- local->debug_id = atomic_inc_return(&rxrpc_debug_id);
+ local->debug_id = atomic_inc_return_wrap(&rxrpc_debug_id);
memcpy(&local->srx, srx, sizeof(*srx));
}
diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index 5dab1ff..77481b9 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c
@@ -158,7 +158,7 @@ int rxrpc_send_ack_packet(struct rxrpc_call *call, bool ping)
iov[1].iov_len = sizeof(pkt->ackinfo);
len = iov[0].iov_len + iov[1].iov_len;
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
pkt->whdr.serial = htonl(serial);
trace_rxrpc_tx_ack(call, serial,
ntohl(pkt->ack.firstPacket),
@@ -249,7 +249,7 @@ int rxrpc_send_abort_packet(struct rxrpc_call *call)
iov[0].iov_base = &pkt;
iov[0].iov_len = sizeof(pkt);
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
pkt.whdr.serial = htonl(serial);
ret = kernel_sendmsg(conn->params.local->socket,
@@ -278,7 +278,7 @@ int rxrpc_send_data_packet(struct rxrpc_call *call, struct sk_buff *skb,
_enter(",{%d}", skb->len);
/* Each transmission of a Tx packet needs a new serial number */
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
whdr.epoch = htonl(conn->proto.epoch);
whdr.cid = htonl(call->cid);
diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c
index 941b724..58cee86 100644
--- a/net/rxrpc/peer_object.c
+++ b/net/rxrpc/peer_object.c
@@ -229,7 +229,7 @@ struct rxrpc_peer *rxrpc_alloc_peer(struct rxrpc_local *local, gfp_t gfp)
peer->service_conns = RB_ROOT;
seqlock_init(&peer->service_conn_lock);
spin_lock_init(&peer->lock);
- peer->debug_id = atomic_inc_return(&rxrpc_debug_id);
+ peer->debug_id = atomic_inc_return_wrap(&rxrpc_debug_id);
}
_leave(" = %p", peer);
diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c
index 65cd980..72e34c3 100644
--- a/net/rxrpc/proc.c
+++ b/net/rxrpc/proc.c
@@ -176,7 +176,7 @@ static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
atomic_read(&conn->usage),
rxrpc_conn_states[conn->state],
key_serial(conn->params.key),
- atomic_read(&conn->serial),
+ atomic_read_wrap(&conn->serial),
conn->hi_serial);
return 0;
diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c
index 4374e7b..6b28698 100644
--- a/net/rxrpc/rxkad.c
+++ b/net/rxrpc/rxkad.c
@@ -636,7 +636,7 @@ static int rxkad_issue_challenge(struct rxrpc_connection *conn)
len = iov[0].iov_len + iov[1].iov_len;
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
whdr.serial = htonl(serial);
_proto("Tx CHALLENGE %%%u", serial);
@@ -690,7 +690,7 @@ static int rxkad_send_response(struct rxrpc_connection *conn,
len = iov[0].iov_len + iov[1].iov_len + iov[2].iov_len;
- serial = atomic_inc_return(&conn->serial);
+ serial = atomic_inc_return_wrap(&conn->serial);
whdr.serial = htonl(serial);
_proto("Tx RESPONSE %%%u", serial);
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 6cfb6e9..0977283 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -362,7 +362,7 @@ void netif_carrier_on(struct net_device *dev)
if (test_and_clear_bit(__LINK_STATE_NOCARRIER, &dev->state)) {
if (dev->reg_state == NETREG_UNINITIALIZED)
return;
- atomic_inc(&dev->carrier_changes);
+ atomic_inc_wrap(&dev->carrier_changes);
linkwatch_fire_event(dev);
if (netif_running(dev))
__netdev_watchdog_up(dev);
@@ -381,7 +381,7 @@ void netif_carrier_off(struct net_device *dev)
if (!test_and_set_bit(__LINK_STATE_NOCARRIER, &dev->state)) {
if (dev->reg_state == NETREG_UNINITIALIZED)
return;
- atomic_inc(&dev->carrier_changes);
+ atomic_inc_wrap(&dev->carrier_changes);
linkwatch_fire_event(dev);
}
}
diff --git a/net/sctp/sctp_diag.c b/net/sctp/sctp_diag.c
index 048954e..2c61be1 100644
--- a/net/sctp/sctp_diag.c
+++ b/net/sctp/sctp_diag.c
@@ -157,7 +157,7 @@ static int inet_sctp_diag_fill(struct sock *sk, struct sctp_association *asoc,
mem[SK_MEMINFO_WMEM_QUEUED] = sk->sk_wmem_queued;
mem[SK_MEMINFO_OPTMEM] = atomic_read(&sk->sk_omem_alloc);
mem[SK_MEMINFO_BACKLOG] = sk->sk_backlog.len;
- mem[SK_MEMINFO_DROPS] = atomic_read(&sk->sk_drops);
+ mem[SK_MEMINFO_DROPS] = atomic_read_wrap(&sk->sk_drops);
if (nla_put(skb, INET_DIAG_SKMEMINFO, sizeof(mem), &mem) < 0)
goto errout;
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index d67f7e1..a2f90b0 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1142,7 +1142,7 @@ static int gss_proxy_save_rsc(struct cache_detail *cd,
uint64_t *handle)
{
struct rsc rsci, *rscp = NULL;
- static atomic64_t ctxhctr;
+ static atomic64_wrap_t ctxhctr = ATOMIC64_INIT(0);
long long ctxh;
struct gss_api_mech *gm = NULL;
time_t expiry;
@@ -1153,7 +1153,7 @@ static int gss_proxy_save_rsc(struct cache_detail *cd,
status = -ENOMEM;
/* the handle needs to be just a unique id,
* use a static counter */
- ctxh = atomic64_inc_return(&ctxhctr);
+ ctxh = atomic64_inc_return_wrap(&ctxhctr);
/* make a copy for the caller */
*handle = ctxh;
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 5db68b3..3dc6567 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -262,9 +262,9 @@ static int rpc_wait_bit_killable(struct wait_bit_key *key, int mode)
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS)
static void rpc_task_set_debuginfo(struct rpc_task *task)
{
- static atomic_t rpc_pid;
+ static atomic_wrap_t rpc_pid;
- task->tk_pid = atomic_inc_return(&rpc_pid);
+ task->tk_pid = atomic_inc_return_wrap(&rpc_pid);
}
#else
static inline void rpc_task_set_debuginfo(struct rpc_task *task)
diff --git a/net/sunrpc/xprtrdma/svc_rdma.c b/net/sunrpc/xprtrdma/svc_rdma.c
index c846ca9..211919a 100644
--- a/net/sunrpc/xprtrdma/svc_rdma.c
+++ b/net/sunrpc/xprtrdma/svc_rdma.c
@@ -62,15 +62,15 @@ unsigned int svcrdma_max_req_size = RPCRDMA_MAX_REQ_SIZE;
static unsigned int min_max_inline = 4096;
static unsigned int max_max_inline = 65536;
-atomic_t rdma_stat_recv;
-atomic_t rdma_stat_read;
-atomic_t rdma_stat_write;
-atomic_t rdma_stat_sq_starve;
-atomic_t rdma_stat_rq_starve;
-atomic_t rdma_stat_rq_poll;
-atomic_t rdma_stat_rq_prod;
-atomic_t rdma_stat_sq_poll;
-atomic_t rdma_stat_sq_prod;
+atomic_wrap_t rdma_stat_recv;
+atomic_wrap_t rdma_stat_read;
+atomic_wrap_t rdma_stat_write;
+atomic_wrap_t rdma_stat_sq_starve;
+atomic_wrap_t rdma_stat_rq_starve;
+atomic_wrap_t rdma_stat_rq_poll;
+atomic_wrap_t rdma_stat_rq_prod;
+atomic_wrap_t rdma_stat_sq_poll;
+atomic_wrap_t rdma_stat_sq_prod;
struct workqueue_struct *svc_rdma_wq;
@@ -147,63 +147,63 @@ static struct ctl_table svcrdma_parm_table[] = {
{
.procname = "rdma_stat_read",
.data = &rdma_stat_read,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_recv",
.data = &rdma_stat_recv,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_write",
.data = &rdma_stat_write,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_sq_starve",
.data = &rdma_stat_sq_starve,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_rq_starve",
.data = &rdma_stat_rq_starve,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_rq_poll",
.data = &rdma_stat_rq_poll,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_rq_prod",
.data = &rdma_stat_rq_prod,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_sq_poll",
.data = &rdma_stat_sq_poll,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
{
.procname = "rdma_stat_sq_prod",
.data = &rdma_stat_sq_prod,
- .maxlen = sizeof(atomic_t),
+ .maxlen = sizeof(atomic_wrap_t),
.mode = 0644,
.proc_handler = read_reset_stat,
},
diff --git a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
index ad1df97..cfba859 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
@@ -200,7 +200,7 @@ int rdma_read_chunk_lcl(struct svcxprt_rdma *xprt,
*page_no = pg_no;
*page_offset = pg_off;
ret = read;
- atomic_inc(&rdma_stat_read);
+ atomic_inc_wrap(&rdma_stat_read);
return ret;
err:
svc_rdma_unmap_dma(ctxt);
@@ -345,7 +345,7 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
*page_no = pg_no;
*page_offset = pg_off;
ret = read;
- atomic_inc(&rdma_stat_read);
+ atomic_inc_wrap(&rdma_stat_read);
return ret;
err:
ib_dma_unmap_sg(xprt->sc_cm_id->device,
@@ -612,7 +612,7 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp)
dto_q);
list_del_init(&ctxt->dto_q);
} else {
- atomic_inc(&rdma_stat_rq_starve);
+ atomic_inc_wrap(&rdma_stat_rq_starve);
clear_bit(XPT_DATA, &xprt->xpt_flags);
ctxt = NULL;
}
@@ -629,7 +629,7 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp)
}
dprintk("svcrdma: processing ctxt=%p on xprt=%p, rqstp=%p, status=%d\n",
ctxt, rdma_xprt, rqstp, ctxt->wc_status);
- atomic_inc(&rdma_stat_recv);
+ atomic_inc_wrap(&rdma_stat_recv);
/* Build up the XDR from the receive buffers. */
rdma_build_arg_xdr(rqstp, ctxt, ctxt->byte_len);
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index f5a91ed..4612251 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -349,7 +349,7 @@ static int send_write(struct svcxprt_rdma *xprt, struct svc_rqst *rqstp,
write_wr.remote_addr = to;
/* Post It */
- atomic_inc(&rdma_stat_write);
+ atomic_inc_wrap(&rdma_stat_write);
if (svc_rdma_send(xprt, &write_wr.wr))
goto err;
return write_len - bc;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 6864fb9..7457aae 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -1336,7 +1336,7 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr)
spin_lock_bh(&xprt->sc_lock);
if (xprt->sc_sq_depth < atomic_read(&xprt->sc_sq_count) + wr_count) {
spin_unlock_bh(&xprt->sc_lock);
- atomic_inc(&rdma_stat_sq_starve);
+ atomic_inc_wrap(&rdma_stat_sq_starve);
/* Wait until SQ WR available if SQ still full */
wait_event(xprt->sc_send_wait,
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index fd69866..c8d30df 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -338,7 +338,7 @@ static void xfrm_policy_kill(struct xfrm_policy *policy)
{
policy->walk.dead = 1;
- atomic_inc(&policy->genid);
+ atomic_inc_wrap(&policy->genid);
if (del_timer(&policy->polq.hold_timer))
xfrm_pol_put(policy);
@@ -803,7 +803,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
else
hlist_add_head(&policy->bydst, chain);
__xfrm_policy_link(policy, dir);
- atomic_inc(&net->xfrm.flow_cache_genid);
+ atomic_inc_wrap(&net->xfrm.flow_cache_genid);
/* After previous checking, family can either be AF_INET or AF_INET6 */
if (policy->family == AF_INET)
@@ -1926,7 +1926,7 @@ xfrm_resolve_and_create_bundle(struct xfrm_policy **pols, int num_pols,
xdst->num_pols = num_pols;
memcpy(xdst->pols, pols, sizeof(struct xfrm_policy *) * num_pols);
- xdst->policy_genid = atomic_read(&pols[0]->genid);
+ xdst->policy_genid = atomic_read_wrap(&pols[0]->genid);
return xdst;
}
@@ -2793,7 +2793,8 @@ static int xfrm_bundle_ok(struct xfrm_dst *first)
if (xdst->xfrm_genid != dst->xfrm->genid)
return 0;
if (xdst->num_pols > 0 &&
- xdst->policy_genid != atomic_read(&xdst->pols[0]->genid))
+ xdst->policy_genid !=
+ atomic_read_wrap(&xdst->pols[0]->genid))
return 0;
mtu = dst_mtu(dst->child);
@@ -3297,7 +3298,7 @@ static int xfrm_policy_migrate(struct xfrm_policy *pol,
sizeof(pol->xfrm_vec[i].saddr));
pol->xfrm_vec[i].encap_family = mp->new_family;
/* flush bundles */
- atomic_inc(&pol->genid);
+ atomic_inc_wrap(&pol->genid);
}
}
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 419bf5d..46d5ef2 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1543,10 +1543,10 @@ EXPORT_SYMBOL(xfrm_find_acq_byseq);
u32 xfrm_get_acqseq(void)
{
u32 res;
- static atomic_t acqseq;
+ static atomic_wrap_t acqseq;
do {
- res = atomic_inc_return(&acqseq);
+ res = atomic_inc_return_wrap(&acqseq);
} while (!res);
return res;
diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h
index 1450f85..056dfe8 100644
--- a/security/selinux/include/xfrm.h
+++ b/security/selinux/include/xfrm.h
@@ -48,7 +48,7 @@ static inline void selinux_xfrm_notify_policyload(void)
rtnl_lock();
for_each_net(net) {
- atomic_inc(&net->xfrm.flow_cache_genid);
+ atomic_inc_wrap(&net->xfrm.flow_cache_genid);
rt_genid_bump_all(net);
}
rtnl_unlock();
--
2.7.4
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