Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking changes from David Miller:

 1) GRE now works over ipv6, from Dmitry Kozlov.

 2) Make SCTP more network namespace aware, from Eric Biederman.

 3) TEAM driver now works with non-ethernet devices, from Jiri Pirko.

 4) Make openvswitch network namespace aware, from Pravin B Shelar.

 5) IPV6 NAT implementation, from Patrick McHardy.

 6) Server side support for TCP Fast Open, from Jerry Chu and others.

 7) Packet BPF filter supports MOD and XOR, from Eric Dumazet and Daniel
    Borkmann.

 8) Increate the loopback default MTU to 64K, from Eric Dumazet.

 9) Use a per-task rather than per-socket page fragment allocator for
    outgoing networking traffic.  This benefits processes that have very
    many mostly idle sockets, which is quite common.

    From Eric Dumazet.

10) Use up to 32K for page fragment allocations, with fallbacks to
    smaller sizes when higher order page allocations fail.  Benefits are
    a) less segments for driver to process b) less calls to page
    allocator c) less waste of space.

    From Eric Dumazet.

11) Allow GRO to be used on GRE tunnels, from Eric Dumazet.

12) VXLAN device driver, one way to handle VLAN issues such as the
    limitation of 4096 VLAN IDs yet still have some level of isolation.
    From Stephen Hemminger.

13) As usual there is a large boatload of driver changes, with the scale
    perhaps tilted towards the wireless side this time around.

Fix up various fairly trivial conflicts, mostly caused by the user
namespace changes.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1012 commits)
  hyperv: Add buffer for extended info after the RNDIS response message.
  hyperv: Report actual status in receive completion packet
  hyperv: Remove extra allocated space for recv_pkt_list elements
  hyperv: Fix page buffer handling in rndis_filter_send_request()
  hyperv: Fix the missing return value in rndis_filter_set_packet_filter()
  hyperv: Fix the max_xfer_size in RNDIS initialization
  vxlan: put UDP socket in correct namespace
  vxlan: Depend on CONFIG_INET
  sfc: Fix the reported priorities of different filter types
  sfc: Remove EFX_FILTER_FLAG_RX_OVERRIDE_IP
  sfc: Fix loopback self-test with separate_tx_channels=1
  sfc: Fix MCDI structure field lookup
  sfc: Add parentheses around use of bitfield macro arguments
  sfc: Fix null function pointer in efx_sriov_channel_type
  vxlan: virtual extensible lan
  igmp: export symbol ip_mc_leave_group
  netlink: add attributes to fdb interface
  tg3: unconditionally select HWMON support when tg3 is enabled.
  Revert "net: ti cpsw ethernet: allow reading phy interface mode from DT"
  gre: fix sparse warning
  ...

7 files changed, 66 insertions, 77 deletions

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index e3d2c78cb52c..102761d294cb 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -644,7 +644,7 @@ errout:
 }
 
 static int
-tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
+tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 portid, u32 seq,
 	     u16 flags, int event, int bind, int ref)
 {
 	struct tcamsg *t;
@@ -652,7 +652,7 @@ tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
 	unsigned char *b = skb_tail_pointer(skb);
 	struct nlattr *nest;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*t), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*t), flags);
 	if (!nlh)
 		goto out_nlmsg_trim;
 	t = nlmsg_data(nlh);
@@ -678,7 +678,7 @@ out_nlmsg_trim:
 }
 
 static int
-act_get_notify(struct net *net, u32 pid, struct nlmsghdr *n,
+act_get_notify(struct net *net, u32 portid, struct nlmsghdr *n,
 	       struct tc_action *a, int event)
 {
 	struct sk_buff *skb;
@@ -686,16 +686,16 @@ act_get_notify(struct net *net, u32 pid, struct nlmsghdr *n,
 	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb)
 		return -ENOBUFS;
-	if (tca_get_fill(skb, a, pid, n->nlmsg_seq, 0, event, 0, 0) <= 0) {
+	if (tca_get_fill(skb, a, portid, n->nlmsg_seq, 0, event, 0, 0) <= 0) {
 		kfree_skb(skb);
 		return -EINVAL;
 	}
 
-	return rtnl_unicast(skb, net, pid);
+	return rtnl_unicast(skb, net, portid);
 }
 
 static struct tc_action *
-tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
+tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 portid)
 {
 	struct nlattr *tb[TCA_ACT_MAX + 1];
 	struct tc_action *a;
@@ -762,7 +762,7 @@ static struct tc_action *create_a(int i)
 }
 
 static int tca_action_flush(struct net *net, struct nlattr *nla,
-			    struct nlmsghdr *n, u32 pid)
+			    struct nlmsghdr *n, u32 portid)
 {
 	struct sk_buff *skb;
 	unsigned char *b;
@@ -799,7 +799,7 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
 	if (a->ops == NULL)
 		goto err_out;
 
-	nlh = nlmsg_put(skb, pid, n->nlmsg_seq, RTM_DELACTION, sizeof(*t), 0);
+	nlh = nlmsg_put(skb, portid, n->nlmsg_seq, RTM_DELACTION, sizeof(*t), 0);
 	if (!nlh)
 		goto out_module_put;
 	t = nlmsg_data(nlh);
@@ -823,7 +823,7 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
 	nlh->nlmsg_flags |= NLM_F_ROOT;
 	module_put(a->ops->owner);
 	kfree(a);
-	err = rtnetlink_send(skb, net, pid, RTNLGRP_TC,
+	err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
 			     n->nlmsg_flags & NLM_F_ECHO);
 	if (err > 0)
 		return 0;
@@ -841,7 +841,7 @@ noflush_out:
 
 static int
 tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
-	      u32 pid, int event)
+	      u32 portid, int event)
 {
 	int i, ret;
 	struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
@@ -853,13 +853,13 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
 
 	if (event == RTM_DELACTION && n->nlmsg_flags & NLM_F_ROOT) {
 		if (tb[1] != NULL)
-			return tca_action_flush(net, tb[1], n, pid);
+			return tca_action_flush(net, tb[1], n, portid);
 		else
 			return -EINVAL;
 	}
 
 	for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
-		act = tcf_action_get_1(tb[i], n, pid);
+		act = tcf_action_get_1(tb[i], n, portid);
 		if (IS_ERR(act)) {
 			ret = PTR_ERR(act);
 			goto err;
@@ -874,7 +874,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
 	}
 
 	if (event == RTM_GETACTION)
-		ret = act_get_notify(net, pid, n, head, event);
+		ret = act_get_notify(net, portid, n, head, event);
 	else { /* delete */
 		struct sk_buff *skb;
 
@@ -884,7 +884,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
 			goto err;
 		}
 
-		if (tca_get_fill(skb, head, pid, n->nlmsg_seq, 0, event,
+		if (tca_get_fill(skb, head, portid, n->nlmsg_seq, 0, event,
 				 0, 1) <= 0) {
 			kfree_skb(skb);
 			ret = -EINVAL;
@@ -893,7 +893,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
 
 		/* now do the delete */
 		tcf_action_destroy(head, 0);
-		ret = rtnetlink_send(skb, net, pid, RTNLGRP_TC,
+		ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
 				     n->nlmsg_flags & NLM_F_ECHO);
 		if (ret > 0)
 			return 0;
@@ -905,7 +905,7 @@ err:
 }
 
 static int tcf_add_notify(struct net *net, struct tc_action *a,
-			  u32 pid, u32 seq, int event, u16 flags)
+			  u32 portid, u32 seq, int event, u16 flags)
 {
 	struct tcamsg *t;
 	struct nlmsghdr *nlh;
@@ -920,7 +920,7 @@ static int tcf_add_notify(struct net *net, struct tc_action *a,
 
 	b = skb_tail_pointer(skb);
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*t), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*t), flags);
 	if (!nlh)
 		goto out_kfree_skb;
 	t = nlmsg_data(nlh);
@@ -940,7 +940,7 @@ static int tcf_add_notify(struct net *net, struct tc_action *a,
 	nlh->nlmsg_len = skb_tail_pointer(skb) - b;
 	NETLINK_CB(skb).dst_group = RTNLGRP_TC;
 
-	err = rtnetlink_send(skb, net, pid, RTNLGRP_TC, flags & NLM_F_ECHO);
+	err = rtnetlink_send(skb, net, portid, RTNLGRP_TC, flags & NLM_F_ECHO);
 	if (err > 0)
 		err = 0;
 	return err;
@@ -953,7 +953,7 @@ out_kfree_skb:
 
 static int
 tcf_action_add(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
-	       u32 pid, int ovr)
+	       u32 portid, int ovr)
 {
 	int ret = 0;
 	struct tc_action *act;
@@ -971,7 +971,7 @@ tcf_action_add(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
 	/* dump then free all the actions after update; inserted policy
 	 * stays intact
 	 */
-	ret = tcf_add_notify(net, act, pid, seq, RTM_NEWACTION, n->nlmsg_flags);
+	ret = tcf_add_notify(net, act, portid, seq, RTM_NEWACTION, n->nlmsg_flags);
 	for (a = act; a; a = act) {
 		act = a->next;
 		kfree(a);
@@ -984,7 +984,7 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 {
 	struct net *net = sock_net(skb->sk);
 	struct nlattr *tca[TCA_ACT_MAX + 1];
-	u32 pid = skb ? NETLINK_CB(skb).pid : 0;
+	u32 portid = skb ? NETLINK_CB(skb).portid : 0;
 	int ret = 0, ovr = 0;
 
 	ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL);
@@ -1008,17 +1008,17 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 		if (n->nlmsg_flags & NLM_F_REPLACE)
 			ovr = 1;
 replay:
-		ret = tcf_action_add(net, tca[TCA_ACT_TAB], n, pid, ovr);
+		ret = tcf_action_add(net, tca[TCA_ACT_TAB], n, portid, ovr);
 		if (ret == -EAGAIN)
 			goto replay;
 		break;
 	case RTM_DELACTION:
 		ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,
-				    pid, RTM_DELACTION);
+				    portid, RTM_DELACTION);
 		break;
 	case RTM_GETACTION:
 		ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,
-				    pid, RTM_GETACTION);
+				    portid, RTM_GETACTION);
 		break;
 	default:
 		BUG();
@@ -1085,7 +1085,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
 		goto out_module_put;
 	}
 
-	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
 			cb->nlh->nlmsg_type, sizeof(*t), 0);
 	if (!nlh)
 		goto out_module_put;
@@ -1109,7 +1109,7 @@ tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
 		nla_nest_cancel(skb, nest);
 
 	nlh->nlmsg_len = skb_tail_pointer(skb) - b;
-	if (NETLINK_CB(cb->skb).pid && ret)
+	if (NETLINK_CB(cb->skb).portid && ret)
 		nlh->nlmsg_flags |= NLM_F_MULTI;
 	module_put(a_o->owner);
 	return skb->len;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index dc3ef5aef355..7ae02892437c 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -343,13 +343,13 @@ errout:
 }
 
 static int tcf_fill_node(struct sk_buff *skb, struct tcf_proto *tp,
-			 unsigned long fh, u32 pid, u32 seq, u16 flags, int event)
+			 unsigned long fh, u32 portid, u32 seq, u16 flags, int event)
 {
 	struct tcmsg *tcm;
 	struct nlmsghdr  *nlh;
 	unsigned char *b = skb_tail_pointer(skb);
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
 	if (!nlh)
 		goto out_nlmsg_trim;
 	tcm = nlmsg_data(nlh);
@@ -381,18 +381,18 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,
 			  unsigned long fh, int event)
 {
 	struct sk_buff *skb;
-	u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
+	u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
 
 	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb)
 		return -ENOBUFS;
 
-	if (tcf_fill_node(skb, tp, fh, pid, n->nlmsg_seq, 0, event) <= 0) {
+	if (tcf_fill_node(skb, tp, fh, portid, n->nlmsg_seq, 0, event) <= 0) {
 		kfree_skb(skb);
 		return -EINVAL;
 	}
 
-	return rtnetlink_send(skb, net, pid, RTNLGRP_TC,
+	return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
 			      n->nlmsg_flags & NLM_F_ECHO);
 }
 
@@ -407,7 +407,7 @@ static int tcf_node_dump(struct tcf_proto *tp, unsigned long n,
 {
 	struct tcf_dump_args *a = (void *)arg;
 
-	return tcf_fill_node(a->skb, tp, n, NETLINK_CB(a->cb->skb).pid,
+	return tcf_fill_node(a->skb, tp, n, NETLINK_CB(a->cb->skb).portid,
 			     a->cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWTFILTER);
 }
 
@@ -465,7 +465,7 @@ static int tc_dump_tfilter(struct sk_buff *skb, struct netlink_callback *cb)
 		if (t > s_t)
 			memset(&cb->args[1], 0, sizeof(cb->args)-sizeof(cb->args[0]));
 		if (cb->args[1] == 0) {
-			if (tcf_fill_node(skb, tp, 0, NETLINK_CB(cb->skb).pid,
+			if (tcf_fill_node(skb, tp, 0, NETLINK_CB(cb->skb).portid,
 					  cb->nlh->nlmsg_seq, NLM_F_MULTI,
 					  RTM_NEWTFILTER) <= 0)
 				break;
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 4ab6e3325573..7c3de6ffa516 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -461,7 +461,7 @@ META_COLLECTOR(int_sk_sndtimeo)
 META_COLLECTOR(int_sk_sendmsg_off)
 {
 	SKIP_NONLOCAL(skb);
-	dst->value = skb->sk->sk_sndmsg_off;
+	dst->value = skb->sk->sk_frag.offset;
 }
 
 META_COLLECTOR(int_sk_write_pend)
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index a08b4ab3e421..a18d975db59c 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1185,7 +1185,7 @@ graft:
 }
 
 static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
-			 u32 pid, u32 seq, u16 flags, int event)
+			 u32 portid, u32 seq, u16 flags, int event)
 {
 	struct tcmsg *tcm;
 	struct nlmsghdr  *nlh;
@@ -1193,7 +1193,7 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
 	struct gnet_dump d;
 	struct qdisc_size_table *stab;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
 	if (!nlh)
 		goto out_nlmsg_trim;
 	tcm = nlmsg_data(nlh);
@@ -1248,25 +1248,25 @@ static int qdisc_notify(struct net *net, struct sk_buff *oskb,
 			struct Qdisc *old, struct Qdisc *new)
 {
 	struct sk_buff *skb;
-	u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
+	u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
 
 	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb)
 		return -ENOBUFS;
 
 	if (old && !tc_qdisc_dump_ignore(old)) {
-		if (tc_fill_qdisc(skb, old, clid, pid, n->nlmsg_seq,
+		if (tc_fill_qdisc(skb, old, clid, portid, n->nlmsg_seq,
 				  0, RTM_DELQDISC) < 0)
 			goto err_out;
 	}
 	if (new && !tc_qdisc_dump_ignore(new)) {
-		if (tc_fill_qdisc(skb, new, clid, pid, n->nlmsg_seq,
+		if (tc_fill_qdisc(skb, new, clid, portid, n->nlmsg_seq,
 				  old ? NLM_F_REPLACE : 0, RTM_NEWQDISC) < 0)
 			goto err_out;
 	}
 
 	if (skb->len)
-		return rtnetlink_send(skb, net, pid, RTNLGRP_TC,
+		return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
 				      n->nlmsg_flags & NLM_F_ECHO);
 
 err_out:
@@ -1289,7 +1289,7 @@ static int tc_dump_qdisc_root(struct Qdisc *root, struct sk_buff *skb,
 		q_idx++;
 	} else {
 		if (!tc_qdisc_dump_ignore(q) &&
-		    tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
+		    tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).portid,
 				  cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
 			goto done;
 		q_idx++;
@@ -1300,7 +1300,7 @@ static int tc_dump_qdisc_root(struct Qdisc *root, struct sk_buff *skb,
 			continue;
 		}
 		if (!tc_qdisc_dump_ignore(q) &&
-		    tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).pid,
+		    tc_fill_qdisc(skb, q, q->parent, NETLINK_CB(cb->skb).portid,
 				  cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWQDISC) <= 0)
 			goto done;
 		q_idx++;
@@ -1375,7 +1375,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 	const struct Qdisc_class_ops *cops;
 	unsigned long cl = 0;
 	unsigned long new_cl;
-	u32 pid = tcm->tcm_parent;
+	u32 portid = tcm->tcm_parent;
 	u32 clid = tcm->tcm_handle;
 	u32 qid = TC_H_MAJ(clid);
 	int err;
@@ -1403,8 +1403,8 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 
 	/* Step 1. Determine qdisc handle X:0 */
 
-	if (pid != TC_H_ROOT) {
-		u32 qid1 = TC_H_MAJ(pid);
+	if (portid != TC_H_ROOT) {
+		u32 qid1 = TC_H_MAJ(portid);
 
 		if (qid && qid1) {
 			/* If both majors are known, they must be identical. */
@@ -1418,10 +1418,10 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 		/* Now qid is genuine qdisc handle consistent
 		 * both with parent and child.
 		 *
-		 * TC_H_MAJ(pid) still may be unspecified, complete it now.
+		 * TC_H_MAJ(portid) still may be unspecified, complete it now.
 		 */
-		if (pid)
-			pid = TC_H_MAKE(qid, pid);
+		if (portid)
+			portid = TC_H_MAKE(qid, portid);
 	} else {
 		if (qid == 0)
 			qid = dev->qdisc->handle;
@@ -1439,7 +1439,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 
 	/* Now try to get class */
 	if (clid == 0) {
-		if (pid == TC_H_ROOT)
+		if (portid == TC_H_ROOT)
 			clid = qid;
 	} else
 		clid = TC_H_MAKE(qid, clid);
@@ -1478,7 +1478,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
 	new_cl = cl;
 	err = -EOPNOTSUPP;
 	if (cops->change)
-		err = cops->change(q, clid, pid, tca, &new_cl);
+		err = cops->change(q, clid, portid, tca, &new_cl);
 	if (err == 0)
 		tclass_notify(net, skb, n, q, new_cl, RTM_NEWTCLASS);
 
@@ -1492,7 +1492,7 @@ out:
 
 static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q,
 			  unsigned long cl,
-			  u32 pid, u32 seq, u16 flags, int event)
+			  u32 portid, u32 seq, u16 flags, int event)
 {
 	struct tcmsg *tcm;
 	struct nlmsghdr  *nlh;
@@ -1500,7 +1500,7 @@ static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q,
 	struct gnet_dump d;
 	const struct Qdisc_class_ops *cl_ops = q->ops->cl_ops;
 
-	nlh = nlmsg_put(skb, pid, seq, event, sizeof(*tcm), flags);
+	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
 	if (!nlh)
 		goto out_nlmsg_trim;
 	tcm = nlmsg_data(nlh);
@@ -1540,18 +1540,18 @@ static int tclass_notify(struct net *net, struct sk_buff *oskb,
 			 unsigned long cl, int event)
 {
 	struct sk_buff *skb;
-	u32 pid = oskb ? NETLINK_CB(oskb).pid : 0;
+	u32 portid = oskb ? NETLINK_CB(oskb).portid : 0;
 
 	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
 	if (!skb)
 		return -ENOBUFS;
 
-	if (tc_fill_tclass(skb, q, cl, pid, n->nlmsg_seq, 0, event) < 0) {
+	if (tc_fill_tclass(skb, q, cl, portid, n->nlmsg_seq, 0, event) < 0) {
 		kfree_skb(skb);
 		return -EINVAL;
 	}
 
-	return rtnetlink_send(skb, net, pid, RTNLGRP_TC,
+	return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
 			      n->nlmsg_flags & NLM_F_ECHO);
 }
 
@@ -1565,7 +1565,7 @@ static int qdisc_class_dump(struct Qdisc *q, unsigned long cl, struct qdisc_walk
 {
 	struct qdisc_dump_args *a = (struct qdisc_dump_args *)arg;
 
-	return tc_fill_tclass(a->skb, q, cl, NETLINK_CB(a->cb->skb).pid,
+	return tc_fill_tclass(a->skb, q, cl, NETLINK_CB(a->cb->skb).portid,
 			      a->cb->nlh->nlmsg_seq, NLM_F_MULTI, RTM_NEWTCLASS);
 }
 
diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index 9ce0b4fe23ff..71e50c80315f 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -352,7 +352,7 @@ static int drr_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
 	struct drr_sched *q = qdisc_priv(sch);
 	struct drr_class *cl;
-	int err;
+	int err = 0;
 
 	cl = drr_classify(skb, sch, &err);
 	if (cl == NULL) {
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 511323e89cec..aefc1504dc88 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -324,24 +324,6 @@ void netif_carrier_off(struct net_device *dev)
 }
 EXPORT_SYMBOL(netif_carrier_off);
 
-/**
- * 	netif_notify_peers - notify network peers about existence of @dev
- * 	@dev: network device
- *
- * Generate traffic such that interested network peers are aware of
- * @dev, such as by generating a gratuitous ARP. This may be used when
- * a device wants to inform the rest of the network about some sort of
- * reconfiguration such as a failover event or virtual machine
- * migration.
- */
-void netif_notify_peers(struct net_device *dev)
-{
-	rtnl_lock();
-	call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, dev);
-	rtnl_unlock();
-}
-EXPORT_SYMBOL(netif_notify_peers);
-
 /* "NOOP" scheduler: the best scheduler, recommended for all interfaces
    under all circumstances. It is difficult to invent anything faster or
    cheaper.
@@ -545,6 +527,8 @@ struct Qdisc_ops pfifo_fast_ops __read_mostly = {
 };
 EXPORT_SYMBOL(pfifo_fast_ops);
 
+static struct lock_class_key qdisc_tx_busylock;
+
 struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 			  struct Qdisc_ops *ops)
 {
@@ -552,6 +536,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 	struct Qdisc *sch;
 	unsigned int size = QDISC_ALIGN(sizeof(*sch)) + ops->priv_size;
 	int err = -ENOBUFS;
+	struct net_device *dev = dev_queue->dev;
 
 	p = kzalloc_node(size, GFP_KERNEL,
 			 netdev_queue_numa_node_read(dev_queue));
@@ -571,12 +556,16 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
 	}
 	INIT_LIST_HEAD(&sch->list);
 	skb_queue_head_init(&sch->q);
+
 	spin_lock_init(&sch->busylock);
+	lockdep_set_class(&sch->busylock,
+			  dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);
+
 	sch->ops = ops;
 	sch->enqueue = ops->enqueue;
 	sch->dequeue = ops->dequeue;
 	sch->dev_queue = dev_queue;
-	dev_hold(qdisc_dev(sch));
+	dev_hold(dev);
 	atomic_set(&sch->refcnt, 1);
 
 	return sch;
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index 211a21217045..f0dd83cff906 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -881,7 +881,7 @@ static int qfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
 	struct qfq_sched *q = qdisc_priv(sch);
 	struct qfq_class *cl;
-	int err;
+	int err = 0;
 
 	cl = qfq_classify(skb, sch, &err);
 	if (cl == NULL) {