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

Pull networking updates from David Miller:

 1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.

 2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
    Benniston.

 3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
    Mork.

 4) BPF now has a "random" opcode, from Chema Gonzalez.

 5) Add more BPF documentation and improve test framework, from Daniel
    Borkmann.

 6) Support TCP fastopen over ipv6, from Daniel Lee.

 7) Add software TSO helper functions and use them to support software
    TSO in mvneta and mv643xx_eth drivers.  From Ezequiel Garcia.

 8) Support software TSO in fec driver too, from Nimrod Andy.

 9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.

10) Handle broadcasts more gracefully over macvlan when there are large
    numbers of interfaces configured, from Herbert Xu.

11) Allow more control over fwmark used for non-socket based responses,
    from Lorenzo Colitti.

12) Do TCP congestion window limiting based upon measurements, from Neal
    Cardwell.

13) Support busy polling in SCTP, from Neal Horman.

14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.

15) Bridge promisc mode handling improvements from Vlad Yasevich.

16) Don't use inetpeer entries to implement ID generation any more, it
    performs poorly, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
  rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
  tcp: fixing TLP's FIN recovery
  net: fec: Add software TSO support
  net: fec: Add Scatter/gather support
  net: fec: Increase buffer descriptor entry number
  net: fec: Factorize feature setting
  net: fec: Enable IP header hardware checksum
  net: fec: Factorize the .xmit transmit function
  bridge: fix compile error when compiling without IPv6 support
  bridge: fix smatch warning / potential null pointer dereference
  via-rhine: fix full-duplex with autoneg disable
  bnx2x: Enlarge the dorq threshold for VFs
  bnx2x: Check for UNDI in uncommon branch
  bnx2x: Fix 1G-baseT link
  bnx2x: Fix link for KR with swapped polarity lane
  sctp: Fix sk_ack_backlog wrap-around problem
  net/core: Add VF link state control policy
  net/fsl: xgmac_mdio is dependent on OF_MDIO
  net/fsl: Make xgmac_mdio read error message useful
  net_sched: drr: warn when qdisc is not work conserving
  ...

1 files changed, 73 insertions, 51 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 2ba3b7623960..0efc1368e5a8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -279,7 +279,7 @@ enum qp_transition {
 };
 
 /* For Debug uses */
-static const char *ResourceType(enum mlx4_resource rt)
+static const char *resource_str(enum mlx4_resource rt)
 {
 	switch (rt) {
 	case RES_QP: return "RES_QP";
@@ -307,6 +307,7 @@ static inline int mlx4_grant_resource(struct mlx4_dev *dev, int slave,
 		&priv->mfunc.master.res_tracker.res_alloc[res_type];
 	int err = -EINVAL;
 	int allocated, free, reserved, guaranteed, from_free;
+	int from_rsvd;
 
 	if (slave > dev->num_vfs)
 		return -EINVAL;
@@ -321,11 +322,16 @@ static inline int mlx4_grant_resource(struct mlx4_dev *dev, int slave,
 		res_alloc->res_reserved;
 	guaranteed = res_alloc->guaranteed[slave];
 
-	if (allocated + count > res_alloc->quota[slave])
+	if (allocated + count > res_alloc->quota[slave]) {
+		mlx4_warn(dev, "VF %d port %d res %s: quota exceeded, count %d alloc %d quota %d\n",
+			  slave, port, resource_str(res_type), count,
+			  allocated, res_alloc->quota[slave]);
 		goto out;
+	}
 
 	if (allocated + count <= guaranteed) {
 		err = 0;
+		from_rsvd = count;
 	} else {
 		/* portion may need to be obtained from free area */
 		if (guaranteed - allocated > 0)
@@ -333,8 +339,14 @@ static inline int mlx4_grant_resource(struct mlx4_dev *dev, int slave,
 		else
 			from_free = count;
 
-		if (free - from_free > reserved)
+		from_rsvd = count - from_free;
+
+		if (free - from_free >= reserved)
 			err = 0;
+		else
+			mlx4_warn(dev, "VF %d port %d res %s: free pool empty, free %d from_free %d rsvd %d\n",
+				  slave, port, resource_str(res_type), free,
+				  from_free, reserved);
 	}
 
 	if (!err) {
@@ -342,9 +354,11 @@ static inline int mlx4_grant_resource(struct mlx4_dev *dev, int slave,
 		if (port > 0) {
 			res_alloc->allocated[(port - 1) * (dev->num_vfs + 1) + slave] += count;
 			res_alloc->res_port_free[port - 1] -= count;
+			res_alloc->res_port_rsvd[port - 1] -= from_rsvd;
 		} else {
 			res_alloc->allocated[slave] += count;
 			res_alloc->res_free -= count;
+			res_alloc->res_reserved -= from_rsvd;
 		}
 	}
 
@@ -360,17 +374,36 @@ static inline void mlx4_release_resource(struct mlx4_dev *dev, int slave,
 	struct mlx4_priv *priv = mlx4_priv(dev);
 	struct resource_allocator *res_alloc =
 		&priv->mfunc.master.res_tracker.res_alloc[res_type];
+	int allocated, guaranteed, from_rsvd;
 
 	if (slave > dev->num_vfs)
 		return;
 
 	spin_lock(&res_alloc->alloc_lock);
+
+	allocated = (port > 0) ?
+		res_alloc->allocated[(port - 1) * (dev->num_vfs + 1) + slave] :
+		res_alloc->allocated[slave];
+	guaranteed = res_alloc->guaranteed[slave];
+
+	if (allocated - count >= guaranteed) {
+		from_rsvd = 0;
+	} else {
+		/* portion may need to be returned to reserved area */
+		if (allocated - guaranteed > 0)
+			from_rsvd = count - (allocated - guaranteed);
+		else
+			from_rsvd = count;
+	}
+
 	if (port > 0) {
 		res_alloc->allocated[(port - 1) * (dev->num_vfs + 1) + slave] -= count;
 		res_alloc->res_port_free[port - 1] += count;
+		res_alloc->res_port_rsvd[port - 1] += from_rsvd;
 	} else {
 		res_alloc->allocated[slave] -= count;
 		res_alloc->res_free += count;
+		res_alloc->res_reserved += from_rsvd;
 	}
 
 	spin_unlock(&res_alloc->alloc_lock);
@@ -963,7 +996,7 @@ static struct res_common *alloc_tr(u64 id, enum mlx4_resource type, int slave,
 		ret = alloc_srq_tr(id);
 		break;
 	case RES_MAC:
-		printk(KERN_ERR "implementation missing\n");
+		pr_err("implementation missing\n");
 		return NULL;
 	case RES_COUNTER:
 		ret = alloc_counter_tr(id);
@@ -1057,10 +1090,10 @@ static int remove_mtt_ok(struct res_mtt *res, int order)
 {
 	if (res->com.state == RES_MTT_BUSY ||
 	    atomic_read(&res->ref_count)) {
-		printk(KERN_DEBUG "%s-%d: state %s, ref_count %d\n",
-		       __func__, __LINE__,
-		       mtt_states_str(res->com.state),
-		       atomic_read(&res->ref_count));
+		pr_devel("%s-%d: state %s, ref_count %d\n",
+			 __func__, __LINE__,
+			 mtt_states_str(res->com.state),
+			 atomic_read(&res->ref_count));
 		return -EBUSY;
 	} else if (res->com.state != RES_MTT_ALLOCATED)
 		return -EPERM;
@@ -3897,7 +3930,7 @@ static int add_eth_header(struct mlx4_dev *dev, int slave,
 		}
 	}
 	if (!be_mac) {
-		pr_err("Failed adding eth header to FS rule, Can't find matching MAC for port %d .\n",
+		pr_err("Failed adding eth header to FS rule, Can't find matching MAC for port %d\n",
 		       port);
 		return -EINVAL;
 	}
@@ -3994,7 +4027,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
 	qpn = be32_to_cpu(ctrl->qpn) & 0xffffff;
 	err = get_res(dev, slave, qpn, RES_QP, &rqp);
 	if (err) {
-		pr_err("Steering rule with qpn 0x%x rejected.\n", qpn);
+		pr_err("Steering rule with qpn 0x%x rejected\n", qpn);
 		return err;
 	}
 	rule_header = (struct _rule_hw *)(ctrl + 1);
@@ -4012,7 +4045,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
 	case MLX4_NET_TRANS_RULE_ID_IPV4:
 	case MLX4_NET_TRANS_RULE_ID_TCP:
 	case MLX4_NET_TRANS_RULE_ID_UDP:
-		pr_warn("Can't attach FS rule without L2 headers, adding L2 header.\n");
+		pr_warn("Can't attach FS rule without L2 headers, adding L2 header\n");
 		if (add_eth_header(dev, slave, inbox, rlist, header_id)) {
 			err = -EINVAL;
 			goto err_put;
@@ -4021,7 +4054,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
 			sizeof(struct mlx4_net_trans_rule_hw_eth) >> 2;
 		break;
 	default:
-		pr_err("Corrupted mailbox.\n");
+		pr_err("Corrupted mailbox\n");
 		err = -EINVAL;
 		goto err_put;
 	}
@@ -4035,7 +4068,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
 
 	err = add_res_range(dev, slave, vhcr->out_param, 1, RES_FS_RULE, qpn);
 	if (err) {
-		mlx4_err(dev, "Fail to add flow steering resources.\n ");
+		mlx4_err(dev, "Fail to add flow steering resources\n");
 		/* detach rule*/
 		mlx4_cmd(dev, vhcr->out_param, 0, 0,
 			 MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
@@ -4073,7 +4106,7 @@ int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,
 
 	err = rem_res_range(dev, slave, vhcr->in_param, 1, RES_FS_RULE, 0);
 	if (err) {
-		mlx4_err(dev, "Fail to remove flow steering resources.\n ");
+		mlx4_err(dev, "Fail to remove flow steering resources\n");
 		goto out;
 	}
 
@@ -4151,7 +4184,7 @@ static int _move_all_busy(struct mlx4_dev *dev, int slave,
 					if (print)
 						mlx4_dbg(dev,
 							 "%s id 0x%llx is busy\n",
-							  ResourceType(type),
+							  resource_str(type),
 							  r->res_id);
 					++busy;
 				} else {
@@ -4202,8 +4235,8 @@ static void rem_slave_qps(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_QP);
 	if (err)
-		mlx4_warn(dev, "rem_slave_qps: Could not move all qps to busy"
-			  "for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_qps: Could not move all qps to busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(qp, tmp, qp_list, com.list) {
@@ -4241,10 +4274,8 @@ static void rem_slave_qps(struct mlx4_dev *dev, int slave)
 						       MLX4_CMD_TIME_CLASS_A,
 						       MLX4_CMD_NATIVE);
 					if (err)
-						mlx4_dbg(dev, "rem_slave_qps: failed"
-							 " to move slave %d qpn %d to"
-							 " reset\n", slave,
-							 qp->local_qpn);
+						mlx4_dbg(dev, "rem_slave_qps: failed to move slave %d qpn %d to reset\n",
+							 slave, qp->local_qpn);
 					atomic_dec(&qp->rcq->ref_count);
 					atomic_dec(&qp->scq->ref_count);
 					atomic_dec(&qp->mtt->ref_count);
@@ -4278,8 +4309,8 @@ static void rem_slave_srqs(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_SRQ);
 	if (err)
-		mlx4_warn(dev, "rem_slave_srqs: Could not move all srqs to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_srqs: Could not move all srqs - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(srq, tmp, srq_list, com.list) {
@@ -4309,9 +4340,7 @@ static void rem_slave_srqs(struct mlx4_dev *dev, int slave)
 						       MLX4_CMD_TIME_CLASS_A,
 						       MLX4_CMD_NATIVE);
 					if (err)
-						mlx4_dbg(dev, "rem_slave_srqs: failed"
-							 " to move slave %d srq %d to"
-							 " SW ownership\n",
+						mlx4_dbg(dev, "rem_slave_srqs: failed to move slave %d srq %d to SW ownership\n",
 							 slave, srqn);
 
 					atomic_dec(&srq->mtt->ref_count);
@@ -4346,8 +4375,8 @@ static void rem_slave_cqs(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_CQ);
 	if (err)
-		mlx4_warn(dev, "rem_slave_cqs: Could not move all cqs to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_cqs: Could not move all cqs - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(cq, tmp, cq_list, com.list) {
@@ -4377,9 +4406,7 @@ static void rem_slave_cqs(struct mlx4_dev *dev, int slave)
 						       MLX4_CMD_TIME_CLASS_A,
 						       MLX4_CMD_NATIVE);
 					if (err)
-						mlx4_dbg(dev, "rem_slave_cqs: failed"
-							 " to move slave %d cq %d to"
-							 " SW ownership\n",
+						mlx4_dbg(dev, "rem_slave_cqs: failed to move slave %d cq %d to SW ownership\n",
 							 slave, cqn);
 					atomic_dec(&cq->mtt->ref_count);
 					state = RES_CQ_ALLOCATED;
@@ -4411,8 +4438,8 @@ static void rem_slave_mrs(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_MPT);
 	if (err)
-		mlx4_warn(dev, "rem_slave_mrs: Could not move all mpts to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_mrs: Could not move all mpts - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(mpt, tmp, mpt_list, com.list) {
@@ -4447,9 +4474,7 @@ static void rem_slave_mrs(struct mlx4_dev *dev, int slave)
 						     MLX4_CMD_TIME_CLASS_A,
 						     MLX4_CMD_NATIVE);
 					if (err)
-						mlx4_dbg(dev, "rem_slave_mrs: failed"
-							 " to move slave %d mpt %d to"
-							 " SW ownership\n",
+						mlx4_dbg(dev, "rem_slave_mrs: failed to move slave %d mpt %d to SW ownership\n",
 							 slave, mptn);
 					if (mpt->mtt)
 						atomic_dec(&mpt->mtt->ref_count);
@@ -4481,8 +4506,8 @@ static void rem_slave_mtts(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_MTT);
 	if (err)
-		mlx4_warn(dev, "rem_slave_mtts: Could not move all mtts to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_mtts: Could not move all mtts  - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(mtt, tmp, mtt_list, com.list) {
@@ -4584,8 +4609,8 @@ static void rem_slave_eqs(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_EQ);
 	if (err)
-		mlx4_warn(dev, "rem_slave_eqs: Could not move all eqs to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_eqs: Could not move all eqs - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(eq, tmp, eq_list, com.list) {
@@ -4617,9 +4642,8 @@ static void rem_slave_eqs(struct mlx4_dev *dev, int slave)
 							   MLX4_CMD_TIME_CLASS_A,
 							   MLX4_CMD_NATIVE);
 					if (err)
-						mlx4_dbg(dev, "rem_slave_eqs: failed"
-							 " to move slave %d eqs %d to"
-							 " SW ownership\n", slave, eqn);
+						mlx4_dbg(dev, "rem_slave_eqs: failed to move slave %d eqs %d to SW ownership\n",
+							 slave, eqn);
 					mlx4_free_cmd_mailbox(dev, mailbox);
 					atomic_dec(&eq->mtt->ref_count);
 					state = RES_EQ_RESERVED;
@@ -4648,8 +4672,8 @@ static void rem_slave_counters(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_COUNTER);
 	if (err)
-		mlx4_warn(dev, "rem_slave_counters: Could not move all counters to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_counters: Could not move all counters - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(counter, tmp, counter_list, com.list) {
@@ -4679,8 +4703,8 @@ static void rem_slave_xrcdns(struct mlx4_dev *dev, int slave)
 
 	err = move_all_busy(dev, slave, RES_XRCD);
 	if (err)
-		mlx4_warn(dev, "rem_slave_xrcdns: Could not move all xrcdns to "
-			  "busy for slave %d\n", slave);
+		mlx4_warn(dev, "rem_slave_xrcdns: Could not move all xrcdns - too busy for slave %d\n",
+			  slave);
 
 	spin_lock_irq(mlx4_tlock(dev));
 	list_for_each_entry_safe(xrcd, tmp, xrcdn_list, com.list) {
@@ -4825,10 +4849,8 @@ void mlx4_vf_immed_vlan_work_handler(struct work_struct *_work)
 				       0, MLX4_CMD_UPDATE_QP,
 				       MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 			if (err) {
-				mlx4_info(dev, "UPDATE_QP failed for slave %d, "
-					  "port %d, qpn %d (%d)\n",
-					  work->slave, port, qp->local_qpn,
-					  err);
+				mlx4_info(dev, "UPDATE_QP failed for slave %d, port %d, qpn %d (%d)\n",
+					  work->slave, port, qp->local_qpn, err);
 				errors++;
 			}
 		}