Merge branch 'net-y2038'

Arnd Bergmann says:

====================
net: assorted y2038 changes

This is a set of changes for network drivers and core code to
get rid of the use of time_t and derived data structures.

I have a longer set of patches that enables me to build kernels
with the time_t definition removed completely as a help to find
y2038 overflow issues. This is the subset for networking that
contains all code that has a reasonable way of fixing at the
moment and that is either commonly used (in one of the defconfigs)
or that blocks building a whole subsystem.

Most of the patches in this series should be noncontroversial,
but the last two that I marked [RFC] are a bit tricky and
need input from people that are more familiar with the code than
I am. All 12 patches are independent of one another and can
be applied in any order, so feel free to pick all that look
good.

Patches that are not included here are:

 - disabling less common device drivers that I don't have a fix
   for yet, this includes
	drivers/net/ethernet/brocade/bna/bfa_ioc.c
	drivers/net/ethernet/qlogic/netxen/netxen_nic_hw.c
	drivers/net/ethernet/tile/tilegx.c
	drivers/net/hamradio/baycom_ser_fdx.c
	drivers/net/wireless/ath/ath10k/core.h
	drivers/net/wireless/ath/ath9k/
	drivers/net/wireless/ath/ath9k/
	drivers/net/wireless/atmel.c
	drivers/net/wireless/prism54/isl_38xx.c
	drivers/net/wireless/rt2x00/rt2x00debug.c
	drivers/net/wireless/rtlwifi/
	drivers/net/wireless/ti/wlcore/
	drivers/staging/ozwpan/
	net/atm/mpoa_caches.c
	net/atm/mpoa_proc.c
	net/dccp/probe.c
	net/ipv4/tcp_probe.c
	net/netfilter/nfnetlink_queue_core.c
	net/netfilter/nfnetlink_queue_core.c
	net/netfilter/xt_time.c
	net/openvswitch/flow.c
	net/sctp/probe.c
	net/sunrpc/auth_gss/
	net/sunrpc/svcauth_unix.c
	net/vmw_vsock/af_vsock.c
   We'll get there eventually, or we an add a dependency to ensure
   they are not built on 32-bit kernels that need to survive
   beyond 2038. Most of these should be really easy to fix.

 - recvmmsg/sendmmsg system calls: patches have been sent out
   as part of the syscall series, need a little more work and
   review

 - SIOCGSTAMP/SIOCGSTAMPNS/ ioctl calls: tricky, need to discuss
   with some folks at kernel summit

 - SO_RCVTIMEO/SO_SNDTIMEO/SO_TIMESTAMP/SO_TIMESTAMPNS socket
   opt: similar and related to the ioctl

 - mmapped packet socket: need to create v4 of the API, nontrivial

 - pktgen: sends 32-bit timestamps over network, need to find out
   if using unsigned stamps is good enough

 - af_rxpc: similar to pktgen, uses 32-bit times for deadlines

 - ppp ioctl: patch is being worked on, nontrivial but doable
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 14 insertions, 20 deletions

diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index b9779d441b12..60c79a08e14a 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -118,7 +118,7 @@ static int mip6_mh_filter(struct sock *sk, struct sk_buff *skb)
 
 struct mip6_report_rate_limiter {
 	spinlock_t lock;
-	struct timeval stamp;
+	ktime_t stamp;
 	int iif;
 	struct in6_addr src;
 	struct in6_addr dst;
@@ -184,20 +184,18 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
 	return 0;
 }
 
-static inline int mip6_report_rl_allow(struct timeval *stamp,
+static inline int mip6_report_rl_allow(ktime_t stamp,
 				       const struct in6_addr *dst,
 				       const struct in6_addr *src, int iif)
 {
 	int allow = 0;
 
 	spin_lock_bh(&mip6_report_rl.lock);
-	if (mip6_report_rl.stamp.tv_sec != stamp->tv_sec ||
-	    mip6_report_rl.stamp.tv_usec != stamp->tv_usec ||
+	if (!ktime_equal(mip6_report_rl.stamp, stamp) ||
 	    mip6_report_rl.iif != iif ||
 	    !ipv6_addr_equal(&mip6_report_rl.src, src) ||
 	    !ipv6_addr_equal(&mip6_report_rl.dst, dst)) {
-		mip6_report_rl.stamp.tv_sec = stamp->tv_sec;
-		mip6_report_rl.stamp.tv_usec = stamp->tv_usec;
+		mip6_report_rl.stamp = stamp;
 		mip6_report_rl.iif = iif;
 		mip6_report_rl.src = *src;
 		mip6_report_rl.dst = *dst;
@@ -216,7 +214,7 @@ static int mip6_destopt_reject(struct xfrm_state *x, struct sk_buff *skb,
 	struct ipv6_destopt_hao *hao = NULL;
 	struct xfrm_selector sel;
 	int offset;
-	struct timeval stamp;
+	ktime_t stamp;
 	int err = 0;
 
 	if (unlikely(fl6->flowi6_proto == IPPROTO_MH &&
@@ -230,9 +228,9 @@ static int mip6_destopt_reject(struct xfrm_state *x, struct sk_buff *skb,
 					(skb_network_header(skb) + offset);
 	}
 
-	skb_get_timestamp(skb, &stamp);
+	stamp = skb_get_ktime(skb);
 
-	if (!mip6_report_rl_allow(&stamp, &ipv6_hdr(skb)->daddr,
+	if (!mip6_report_rl_allow(stamp, &ipv6_hdr(skb)->daddr,
 				  hao ? &hao->addr : &ipv6_hdr(skb)->saddr,
 				  opt->iif))
 		goto out;
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 64f1936350c6..c3644458e2ee 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -303,7 +303,6 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 	struct ieee80211_local *local = sdata->local;
 	struct ieee80211_hw *hw = &local->hw;
 	struct sta_info *sta;
-	struct timespec uptime;
 	int i;
 
 	sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp);
@@ -339,8 +338,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
 	/* Mark TID as unreserved */
 	sta->reserved_tid = IEEE80211_TID_UNRESERVED;
 
-	ktime_get_ts(&uptime);
-	sta->last_connected = uptime.tv_sec;
+	sta->last_connected = ktime_get_seconds();
 	ewma_signal_init(&sta->avg_signal);
 	for (i = 0; i < ARRAY_SIZE(sta->chain_signal_avg); i++)
 		ewma_signal_init(&sta->chain_signal_avg[i]);
@@ -1813,7 +1811,6 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
 	struct ieee80211_local *local = sdata->local;
 	struct rate_control_ref *ref = NULL;
-	struct timespec uptime;
 	u32 thr = 0;
 	int i, ac;
 
@@ -1838,8 +1835,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 			 BIT(NL80211_STA_INFO_RX_DROP_MISC) |
 			 BIT(NL80211_STA_INFO_BEACON_LOSS);
 
-	ktime_get_ts(&uptime);
-	sinfo->connected_time = uptime.tv_sec - sta->last_connected;
+	sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
 	sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 
 	if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) |
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 4670821b569d..cc2300f4e177 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -538,9 +538,9 @@ __build_packet_message(struct nfnl_log_net *log,
 
 	if (skb->tstamp.tv64) {
 		struct nfulnl_msg_packet_timestamp ts;
-		struct timeval tv = ktime_to_timeval(skb->tstamp);
-		ts.sec = cpu_to_be64(tv.tv_sec);
-		ts.usec = cpu_to_be64(tv.tv_usec);
+		struct timespec64 kts = ktime_to_timespec64(skb->tstamp);
+		ts.sec = cpu_to_be64(kts.tv_sec);
+		ts.usec = cpu_to_be64(kts.tv_nsec / NSEC_PER_USEC);
 
 		if (nla_put(inst->skb, NFULA_TIMESTAMP, sizeof(ts), &ts))
 			goto nla_put_failure;
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 7954c52e1794..763e06a55155 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2494,7 +2494,7 @@ static int sctp_process_param(struct sctp_association *asoc,
 	__u16 sat;
 	int retval = 1;
 	sctp_scope_t scope;
-	time_t stale;
+	u32 stale;
 	struct sctp_af *af;
 	union sctp_addr_param *addr_param;
 	struct sctp_transport *t;
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index d7eaa7354cf7..6f46aa16cb76 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -2306,7 +2306,7 @@ static sctp_disposition_t sctp_sf_do_5_2_6_stale(struct net *net,
 						 sctp_cmd_seq_t *commands)
 {
 	struct sctp_chunk *chunk = arg;
-	time_t stale;
+	u32 stale;
 	sctp_cookie_preserve_param_t bht;
 	sctp_errhdr_t *err;
 	struct sctp_chunk *reply;