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

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 52 insertions, 26 deletions

diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c
index 525eb3a..f42025d 100644
--- a/net/sched/sch_cbq.c
+++ b/net/sched/sch_cbq.c
@@ -1132,7 +1132,8 @@ static const struct nla_policy cbq_policy[TCA_CBQ_MAX + 1] = {
 	[TCA_CBQ_POLICE]	= { .len = sizeof(struct tc_cbq_police) },
 };
 
-static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
+static int cbq_init(struct Qdisc *sch, struct nlattr *opt,
+		    struct netlink_ext_ack *extack)
 {
 	struct cbq_sched_data *q = qdisc_priv(sch);
 	struct nlattr *tb[TCA_CBQ_MAX + 1];
@@ -1143,22 +1144,27 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
 	hrtimer_init(&q->delay_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS_PINNED);
 	q->delay_timer.function = cbq_undelay;
 
-	if (!opt)
+	if (!opt) {
+		NL_SET_ERR_MSG(extack, "CBQ options are required for this operation");
 		return -EINVAL;
+	}
 
-	err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy, NULL);
+	err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy, extack);
 	if (err < 0)
 		return err;
 
-	if (tb[TCA_CBQ_RTAB] == NULL || tb[TCA_CBQ_RATE] == NULL)
+	if (!tb[TCA_CBQ_RTAB] || !tb[TCA_CBQ_RATE]) {
+		NL_SET_ERR_MSG(extack, "Rate specification missing or incomplete");
 		return -EINVAL;
+	}
 
 	r = nla_data(tb[TCA_CBQ_RATE]);
 
-	if ((q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB])) == NULL)
+	q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB], extack);
+	if (!q->link.R_tab)
 		return -EINVAL;
 
-	err = tcf_block_get(&q->link.block, &q->link.filter_list, sch);
+	err = tcf_block_get(&q->link.block, &q->link.filter_list, sch, extack);
 	if (err)
 		goto put_rtab;
 
@@ -1170,7 +1176,7 @@ static int cbq_init(struct Qdisc *sch, struct nlattr *opt)
 	q->link.common.classid = sch->handle;
 	q->link.qdisc = sch;
 	q->link.q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops,
-				      sch->handle);
+				      sch->handle, NULL);
 	if (!q->link.q)
 		q->link.q = &noop_qdisc;
 	else
@@ -1369,13 +1375,13 @@ cbq_dump_class_stats(struct Qdisc *sch, unsigned long arg,
 }
 
 static int cbq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
-		     struct Qdisc **old)
+		     struct Qdisc **old, struct netlink_ext_ack *extack)
 {
 	struct cbq_class *cl = (struct cbq_class *)arg;
 
 	if (new == NULL) {
-		new = qdisc_create_dflt(sch->dev_queue,
-					&pfifo_qdisc_ops, cl->common.classid);
+		new = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops,
+					cl->common.classid, extack);
 		if (new == NULL)
 			return -ENOBUFS;
 	}
@@ -1450,7 +1456,7 @@ static void cbq_destroy(struct Qdisc *sch)
 
 static int
 cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **tca,
-		 unsigned long *arg)
+		 unsigned long *arg, struct netlink_ext_ack *extack)
 {
 	int err;
 	struct cbq_sched_data *q = qdisc_priv(sch);
@@ -1460,29 +1466,37 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 	struct cbq_class *parent;
 	struct qdisc_rate_table *rtab = NULL;
 
-	if (opt == NULL)
+	if (!opt) {
+		NL_SET_ERR_MSG(extack, "Mandatory qdisc options missing");
 		return -EINVAL;
+	}
 
-	err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy, NULL);
+	err = nla_parse_nested(tb, TCA_CBQ_MAX, opt, cbq_policy, extack);
 	if (err < 0)
 		return err;
 
-	if (tb[TCA_CBQ_OVL_STRATEGY] || tb[TCA_CBQ_POLICE])
+	if (tb[TCA_CBQ_OVL_STRATEGY] || tb[TCA_CBQ_POLICE]) {
+		NL_SET_ERR_MSG(extack, "Neither overlimit strategy nor policing attributes can be used for changing class params");
 		return -EOPNOTSUPP;
+	}
 
 	if (cl) {
 		/* Check parent */
 		if (parentid) {
 			if (cl->tparent &&
-			    cl->tparent->common.classid != parentid)
+			    cl->tparent->common.classid != parentid) {
+				NL_SET_ERR_MSG(extack, "Invalid parent id");
 				return -EINVAL;
-			if (!cl->tparent && parentid != TC_H_ROOT)
+			}
+			if (!cl->tparent && parentid != TC_H_ROOT) {
+				NL_SET_ERR_MSG(extack, "Parent must be root");
 				return -EINVAL;
+			}
 		}
 
 		if (tb[TCA_CBQ_RATE]) {
 			rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]),
-					      tb[TCA_CBQ_RTAB]);
+					      tb[TCA_CBQ_RTAB], extack);
 			if (rtab == NULL)
 				return -EINVAL;
 		}
@@ -1494,6 +1508,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 						    qdisc_root_sleeping_running(sch),
 						    tca[TCA_RATE]);
 			if (err) {
+				NL_SET_ERR_MSG(extack, "Failed to replace specified rate estimator");
 				qdisc_put_rtab(rtab);
 				return err;
 			}
@@ -1532,19 +1547,23 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 	if (parentid == TC_H_ROOT)
 		return -EINVAL;
 
-	if (tb[TCA_CBQ_WRROPT] == NULL || tb[TCA_CBQ_RATE] == NULL ||
-	    tb[TCA_CBQ_LSSOPT] == NULL)
+	if (!tb[TCA_CBQ_WRROPT] || !tb[TCA_CBQ_RATE] || !tb[TCA_CBQ_LSSOPT]) {
+		NL_SET_ERR_MSG(extack, "One of the following attributes MUST be specified: WRR, rate or link sharing");
 		return -EINVAL;
+	}
 
-	rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]), tb[TCA_CBQ_RTAB]);
+	rtab = qdisc_get_rtab(nla_data(tb[TCA_CBQ_RATE]), tb[TCA_CBQ_RTAB],
+			      extack);
 	if (rtab == NULL)
 		return -EINVAL;
 
 	if (classid) {
 		err = -EINVAL;
 		if (TC_H_MAJ(classid ^ sch->handle) ||
-		    cbq_class_lookup(q, classid))
+		    cbq_class_lookup(q, classid)) {
+			NL_SET_ERR_MSG(extack, "Specified class not found");
 			goto failure;
+		}
 	} else {
 		int i;
 		classid = TC_H_MAKE(sch->handle, 0x8000);
@@ -1556,8 +1575,10 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 				break;
 		}
 		err = -ENOSR;
-		if (i >= 0x8000)
+		if (i >= 0x8000) {
+			NL_SET_ERR_MSG(extack, "Unable to generate classid");
 			goto failure;
+		}
 		classid = classid|q->hgenerator;
 	}
 
@@ -1565,8 +1586,10 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 	if (parentid) {
 		parent = cbq_class_lookup(q, parentid);
 		err = -EINVAL;
-		if (parent == NULL)
+		if (!parent) {
+			NL_SET_ERR_MSG(extack, "Failed to find parentid");
 			goto failure;
+		}
 	}
 
 	err = -ENOBUFS;
@@ -1574,7 +1597,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 	if (cl == NULL)
 		goto failure;
 
-	err = tcf_block_get(&cl->block, &cl->filter_list, sch);
+	err = tcf_block_get(&cl->block, &cl->filter_list, sch, extack);
 	if (err) {
 		kfree(cl);
 		return err;
@@ -1586,6 +1609,7 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 					qdisc_root_sleeping_running(sch),
 					tca[TCA_RATE]);
 		if (err) {
+			NL_SET_ERR_MSG(extack, "Couldn't create new estimator");
 			tcf_block_put(cl->block);
 			kfree(cl);
 			goto failure;
@@ -1594,7 +1618,8 @@ cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct nlattr **t
 
 	cl->R_tab = rtab;
 	rtab = NULL;
-	cl->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, classid);
+	cl->q = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops, classid,
+				  NULL);
 	if (!cl->q)
 		cl->q = &noop_qdisc;
 	else
@@ -1678,7 +1703,8 @@ static int cbq_delete(struct Qdisc *sch, unsigned long arg)
 	return 0;
 }
 
-static struct tcf_block *cbq_tcf_block(struct Qdisc *sch, unsigned long arg)
+static struct tcf_block *cbq_tcf_block(struct Qdisc *sch, unsigned long arg,
+				       struct netlink_ext_ack *extack)
 {
 	struct cbq_sched_data *q = qdisc_priv(sch);
 	struct cbq_class *cl = (struct cbq_class *)arg;