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

Pull networking fixes from David Miller:

 1) Fix suspend and resume in mt76x0u USB driver, from Stanislaw
    Gruszka.

 2) Missing memory barriers in xsk, from Magnus Karlsson.

 3) rhashtable fixes in mac80211 from Herbert Xu.

 4) 32-bit MIPS eBPF JIT fixes from Paul Burton.

 5) Fix for_each_netdev_feature() on big endian, from Hauke Mehrtens.

 6) GSO validation fixes from Willem de Bruijn.

 7) Endianness fix for dwmac4 timestamp handling, from Alexandre Torgue.

 8) More strict checks in tcp_v4_err(), from Eric Dumazet.

 9) af_alg_release should NULL out the sk after the sock_put(), from Mao
    Wenan.

10) Missing unlock in mac80211 mesh error path, from Wei Yongjun.

11) Missing device put in hns driver, from Salil Mehta.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  sky2: Increase D3 delay again
  vhost: correctly check the return value of translate_desc() in log_used()
  net: netcp: Fix ethss driver probe issue
  net: hns: Fixes the missing put_device in positive leg for roce reset
  net: stmmac: Fix a race in EEE enable callback
  qed: Fix iWARP syn packet mac address validation.
  qed: Fix iWARP buffer size provided for syn packet processing.
  r8152: Add support for MAC address pass through on RTL8153-BD
  mac80211: mesh: fix missing unlock on error in table_path_del()
  net/mlx4_en: fix spelling mistake: "quiting" -> "quitting"
  net: crypto set sk to NULL when af_alg_release.
  net: Do not allocate page fragments that are not skb aligned
  mm: Use fixed constant in page_frag_alloc instead of size + 1
  tcp: tcp_v4_err() should be more careful
  tcp: clear icsk_backoff in tcp_write_queue_purge()
  net: mv643xx_eth: disable clk on error path in mv643xx_eth_shared_probe()
  qmi_wwan: apply SET_DTR quirk to Sierra WP7607
  net: stmmac: handle endianness in dwmac4_get_timestamp
  doc: Mention MSG_ZEROCOPY implementation for UDP
  mlxsw: __mlxsw_sp_port_headroom_set(): Fix a use of local variable
  ...

Documentation/networking/msg_zerocopy.rst

@@ -7,7 +7,7 @@ Intro
 =====
 
 The MSG_ZEROCOPY flag enables copy avoidance for socket send calls.
-The feature is currently implemented for TCP sockets.
+The feature is currently implemented for TCP and UDP sockets.
 
 
 Opportunity and Caveats

arch/mips/net/ebpf_jit.c

@@ -79,8 +79,6 @@ enum reg_val_type {
 	REG_64BIT_32BIT,
 	/* 32-bit compatible, need truncation for 64-bit ops. */
 	REG_32BIT,
-	/* 32-bit zero extended. */
-	REG_32BIT_ZERO_EX,
 	/* 32-bit no sign/zero extension needed. */
 	REG_32BIT_POS
 };
@@ -343,12 +341,15 @@ static int build_int_epilogue(struct jit_ctx *ctx, int dest_reg)
 	const struct bpf_prog *prog = ctx->skf;
 	int stack_adjust = ctx->stack_size;
 	int store_offset = stack_adjust - 8;
+	enum reg_val_type td;
 	int r0 = MIPS_R_V0;
 
-	if (dest_reg == MIPS_R_RA &&
+	if (dest_reg == MIPS_R_RA) {
-	    get_reg_val_type(ctx, prog->len, BPF_REG_0) == REG_32BIT_ZERO_EX)
 		/* Don't let zero extended value escape. */
-		emit_instr(ctx, sll, r0, r0, 0);
+		td = get_reg_val_type(ctx, prog->len, BPF_REG_0);
+		if (td == REG_64BIT)
+			emit_instr(ctx, sll, r0, r0, 0);
+	}
 
 	if (ctx->flags & EBPF_SAVE_RA) {
 		emit_instr(ctx, ld, MIPS_R_RA, store_offset, MIPS_R_SP);
@@ -692,7 +693,7 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
 		if (dst < 0)
 			return dst;
 		td = get_reg_val_type(ctx, this_idx, insn->dst_reg);
-		if (td == REG_64BIT || td == REG_32BIT_ZERO_EX) {
+		if (td == REG_64BIT) {
 			/* sign extend */
 			emit_instr(ctx, sll, dst, dst, 0);
 		}
@@ -707,7 +708,7 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
 		if (dst < 0)
 			return dst;
 		td = get_reg_val_type(ctx, this_idx, insn->dst_reg);
-		if (td == REG_64BIT || td == REG_32BIT_ZERO_EX) {
+		if (td == REG_64BIT) {
 			/* sign extend */
 			emit_instr(ctx, sll, dst, dst, 0);
 		}
@@ -721,7 +722,7 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
 		if (dst < 0)
 			return dst;
 		td = get_reg_val_type(ctx, this_idx, insn->dst_reg);
-		if (td == REG_64BIT || td == REG_32BIT_ZERO_EX)
+		if (td == REG_64BIT)
 			/* sign extend */
 			emit_instr(ctx, sll, dst, dst, 0);
 		if (insn->imm == 1) {
@@ -860,13 +861,13 @@ static int build_one_insn(const struct bpf_insn *insn, struct jit_ctx *ctx,
 		if (src < 0 || dst < 0)
 			return -EINVAL;
 		td = get_reg_val_type(ctx, this_idx, insn->dst_reg);
-		if (td == REG_64BIT || td == REG_32BIT_ZERO_EX) {
+		if (td == REG_64BIT) {
 			/* sign extend */
 			emit_instr(ctx, sll, dst, dst, 0);
 		}
 		did_move = false;
 		ts = get_reg_val_type(ctx, this_idx, insn->src_reg);
-		if (ts == REG_64BIT || ts == REG_32BIT_ZERO_EX) {
+		if (ts == REG_64BIT) {
 			int tmp_reg = MIPS_R_AT;
 
 			if (bpf_op == BPF_MOV) {
@@ -1254,8 +1255,7 @@ jeq_common:
 		if (insn->imm == 64 && td == REG_32BIT)
 			emit_instr(ctx, dinsu, dst, MIPS_R_ZERO, 32, 32);
 
-		if (insn->imm != 64 &&
+		if (insn->imm != 64 && td == REG_64BIT) {
-		    (td == REG_64BIT || td == REG_32BIT_ZERO_EX)) {
 			/* sign extend */
 			emit_instr(ctx, sll, dst, dst, 0);
 		}

crypto/af_alg.c

@@ -122,8 +122,10 @@ static void alg_do_release(const struct af_alg_type *type, void *private)
 
 int af_alg_release(struct socket *sock)
 {
-	if (sock->sk)
+	if (sock->sk) {
 		sock_put(sock->sk);
+		sock->sk = NULL;
+	}
 	return 0;
 }
 EXPORT_SYMBOL_GPL(af_alg_release);

drivers/net/dsa/b53/b53_common.c

@@ -344,7 +344,8 @@ static void b53_set_forwarding(struct b53_device *dev, int enable)
 	b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
 }
 
-static void b53_enable_vlan(struct b53_device *dev, bool enable)
+static void b53_enable_vlan(struct b53_device *dev, bool enable,
+			    bool enable_filtering)
 {
 	u8 mgmt, vc0, vc1, vc4 = 0, vc5;
 
@@ -369,8 +370,13 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable)
 		vc0 |= VC0_VLAN_EN | VC0_VID_CHK_EN | VC0_VID_HASH_VID;
 		vc1 |= VC1_RX_MCST_UNTAG_EN | VC1_RX_MCST_FWD_EN;
 		vc4 &= ~VC4_ING_VID_CHECK_MASK;
-		vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
+		if (enable_filtering) {
-		vc5 |= VC5_DROP_VTABLE_MISS;
+			vc4 |= VC4_ING_VID_VIO_DROP << VC4_ING_VID_CHECK_S;
+			vc5 |= VC5_DROP_VTABLE_MISS;
+		} else {
+			vc4 |= VC4_ING_VID_VIO_FWD << VC4_ING_VID_CHECK_S;
+			vc5 &= ~VC5_DROP_VTABLE_MISS;
+		}
 
 		if (is5325(dev))
 			vc0 &= ~VC0_RESERVED_1;
@@ -420,6 +426,9 @@ static void b53_enable_vlan(struct b53_device *dev, bool enable)
 	}
 
 	b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
+
+	dev->vlan_enabled = enable;
+	dev->vlan_filtering_enabled = enable_filtering;
 }
 
 static int b53_set_jumbo(struct b53_device *dev, bool enable, bool allow_10_100)
@@ -632,25 +641,35 @@ static void b53_enable_mib(struct b53_device *dev)
 	b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, gc);
 }
 
+static u16 b53_default_pvid(struct b53_device *dev)
+{
+	if (is5325(dev) || is5365(dev))
+		return 1;
+	else
+		return 0;
+}
+
 int b53_configure_vlan(struct dsa_switch *ds)
 {
 	struct b53_device *dev = ds->priv;
 	struct b53_vlan vl = { 0 };
-	int i;
+	int i, def_vid;
+
+	def_vid = b53_default_pvid(dev);
 
 	/* clear all vlan entries */
 	if (is5325(dev) || is5365(dev)) {
-		for (i = 1; i < dev->num_vlans; i++)
+		for (i = def_vid; i < dev->num_vlans; i++)
 			b53_set_vlan_entry(dev, i, &vl);
 	} else {
 		b53_do_vlan_op(dev, VTA_CMD_CLEAR);
 	}
 
-	b53_enable_vlan(dev, false);
+	b53_enable_vlan(dev, false, dev->vlan_filtering_enabled);
 
 	b53_for_each_port(dev, i)
 		b53_write16(dev, B53_VLAN_PAGE,
-			    B53_VLAN_PORT_DEF_TAG(i), 1);
+			    B53_VLAN_PORT_DEF_TAG(i), def_vid);
 
 	if (!is5325(dev) && !is5365(dev))
 		b53_set_jumbo(dev, dev->enable_jumbo, false);
@@ -1255,6 +1274,46 @@ EXPORT_SYMBOL(b53_phylink_mac_link_up);
 
 int b53_vlan_filtering(struct dsa_switch *ds, int port, bool vlan_filtering)
 {
+	struct b53_device *dev = ds->priv;
+	struct net_device *bridge_dev;
+	unsigned int i;
+	u16 pvid, new_pvid;
+
+	/* Handle the case were multiple bridges span the same switch device
+	 * and one of them has a different setting than what is being requested
+	 * which would be breaking filtering semantics for any of the other
+	 * bridge devices.
+	 */
+	b53_for_each_port(dev, i) {
+		bridge_dev = dsa_to_port(ds, i)->bridge_dev;
+		if (bridge_dev &&
+		    bridge_dev != dsa_to_port(ds, port)->bridge_dev &&
+		    br_vlan_enabled(bridge_dev) != vlan_filtering) {
+			netdev_err(bridge_dev,
+				   "VLAN filtering is global to the switch!\n");
+			return -EINVAL;
+		}
+	}
+
+	b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &pvid);
+	new_pvid = pvid;
+	if (dev->vlan_filtering_enabled && !vlan_filtering) {
+		/* Filtering is currently enabled, use the default PVID since
+		 * the bridge does not expect tagging anymore
+		 */
+		dev->ports[port].pvid = pvid;
+		new_pvid = b53_default_pvid(dev);
+	} else if (!dev->vlan_filtering_enabled && vlan_filtering) {
+		/* Filtering is currently disabled, restore the previous PVID */
+		new_pvid = dev->ports[port].pvid;
+	}
+
+	if (pvid != new_pvid)
+		b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
+			    new_pvid);
+
+	b53_enable_vlan(dev, dev->vlan_enabled, vlan_filtering);
+
 	return 0;
 }
 EXPORT_SYMBOL(b53_vlan_filtering);
@@ -1270,7 +1329,7 @@ int b53_vlan_prepare(struct dsa_switch *ds, int port,
 	if (vlan->vid_end > dev->num_vlans)
 		return -ERANGE;
 
-	b53_enable_vlan(dev, true);
+	b53_enable_vlan(dev, true, dev->vlan_filtering_enabled);
 
 	return 0;
 }
@@ -1300,7 +1359,7 @@ void b53_vlan_add(struct dsa_switch *ds, int port,
 		b53_fast_age_vlan(dev, vid);
 	}
 
-	if (pvid) {
+	if (pvid && !dsa_is_cpu_port(ds, port)) {
 		b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port),
 			    vlan->vid_end);
 		b53_fast_age_vlan(dev, vid);
@@ -1326,12 +1385,8 @@ int b53_vlan_del(struct dsa_switch *ds, int port,
 
 		vl->members &= ~BIT(port);
 
-		if (pvid == vid) {
+		if (pvid == vid)
-			if (is5325(dev) || is5365(dev))
+			pvid = b53_default_pvid(dev);
-				pvid = 1;
-			else
-				pvid = 0;
-		}
 
 		if (untagged && !dsa_is_cpu_port(ds, port))
 			vl->untag &= ~(BIT(port));
@@ -1644,10 +1699,7 @@ void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
 	b53_write16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), pvlan);
 	dev->ports[port].vlan_ctl_mask = pvlan;
 
-	if (is5325(dev) || is5365(dev))
+	pvid = b53_default_pvid(dev);
-		pvid = 1;
-	else
-		pvid = 0;
 
 	/* Make this port join all VLANs without VLAN entries */
 	if (is58xx(dev)) {

drivers/net/dsa/b53/b53_priv.h

@@ -91,6 +91,7 @@ enum {
 struct b53_port {
 	u16		vlan_ctl_mask;
 	struct ethtool_eee eee;
+	u16		pvid;
 };
 
 struct b53_vlan {
@@ -137,6 +138,8 @@ struct b53_device {
 
 	unsigned int num_vlans;
 	struct b53_vlan *vlans;
+	bool vlan_enabled;
+	bool vlan_filtering_enabled;
 	unsigned int num_ports;
 	struct b53_port *ports;
 };

drivers/net/dsa/bcm_sf2.c

@@ -726,10 +726,11 @@ static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
 {
 	struct net_device *p = ds->ports[port].cpu_dp->master;
 	struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
-	struct ethtool_wolinfo pwol;
+	struct ethtool_wolinfo pwol = { };
 
 	/* Get the parent device WoL settings */
-	p->ethtool_ops->get_wol(p, &pwol);
+	if (p->ethtool_ops->get_wol)
+		p->ethtool_ops->get_wol(p, &pwol);
 
 	/* Advertise the parent device supported settings */
 	wol->supported = pwol.supported;
@@ -750,9 +751,10 @@ static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
 	struct net_device *p = ds->ports[port].cpu_dp->master;
 	struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
 	s8 cpu_port = ds->ports[port].cpu_dp->index;
-	struct ethtool_wolinfo pwol;
+	struct ethtool_wolinfo pwol =  { };
 
-	p->ethtool_ops->get_wol(p, &pwol);
+	if (p->ethtool_ops->get_wol)
+		p->ethtool_ops->get_wol(p, &pwol);
 	if (wol->wolopts & ~pwol.supported)
 		return -EINVAL;
 

drivers/net/ethernet/broadcom/bcmsysport.c

@@ -134,6 +134,10 @@ static void bcm_sysport_set_rx_csum(struct net_device *dev,
 
 	priv->rx_chk_en = !!(wanted & NETIF_F_RXCSUM);
 	reg = rxchk_readl(priv, RXCHK_CONTROL);
+	/* Clear L2 header checks, which would prevent BPDUs
+	 * from being received.
+	 */
+	reg &= ~RXCHK_L2_HDR_DIS;
 	if (priv->rx_chk_en)
 		reg |= RXCHK_EN;
 	else

drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c

@@ -3128,6 +3128,9 @@ int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset)
 		dsaf_set_bit(credit, DSAF_SBM_ROCEE_CFG_CRD_EN_B, 1);
 		dsaf_write_dev(dsaf_dev, DSAF_SBM_ROCEE_CFG_REG_REG, credit);
 	}
+
+	put_device(&pdev->dev);
+
 	return 0;
 }
 EXPORT_SYMBOL(hns_dsaf_roce_reset);

drivers/net/ethernet/marvell/mv643xx_eth.c

@@ -2879,7 +2879,7 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
 
 	ret = mv643xx_eth_shared_of_probe(pdev);
 	if (ret)
-		return ret;
+		goto err_put_clk;
 	pd = dev_get_platdata(&pdev->dev);
 
 	msp->tx_csum_limit = (pd != NULL && pd->tx_csum_limit) ?
@@ -2887,6 +2887,11 @@ static int mv643xx_eth_shared_probe(struct platform_device *pdev)
 	infer_hw_params(msp);
 
 	return 0;
+
+err_put_clk:
+	if (!IS_ERR(msp->clk))
+		clk_disable_unprepare(msp->clk);
+	return ret;
 }
 
 static int mv643xx_eth_shared_remove(struct platform_device *pdev)

drivers/net/ethernet/marvell/sky2.c

@@ -5073,7 +5073,7 @@ static int sky2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	INIT_WORK(&hw->restart_work, sky2_restart);
 
 	pci_set_drvdata(pdev, hw);
-	pdev->d3_delay = 200;
+	pdev->d3_delay = 300;
 
 	return 0;
 

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

@@ -3360,7 +3360,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 	dev->addr_len = ETH_ALEN;
 	mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
 	if (!is_valid_ether_addr(dev->dev_addr)) {
-		en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
+		en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
 		       priv->port, dev->dev_addr);
 		err = -EINVAL;
 		goto out;

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

@@ -862,8 +862,9 @@ int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
 	for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 		bool configure = false;
 		bool pfc = false;
+		u16 thres_cells;
+		u16 delay_cells;
 		bool lossy;
-		u16 thres;
 
 		for (j = 0; j < IEEE_8021QAZ_MAX_TCS; j++) {
 			if (prio_tc[j] == i) {
@@ -877,10 +878,11 @@ int __mlxsw_sp_port_headroom_set(struct mlxsw_sp_port *mlxsw_sp_port, int mtu,
 			continue;
 
 		lossy = !(pfc || pause_en);
-		thres = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, mtu);
+		thres_cells = mlxsw_sp_pg_buf_threshold_get(mlxsw_sp, mtu);
-		delay = mlxsw_sp_pg_buf_delay_get(mlxsw_sp, mtu, delay, pfc,
+		delay_cells = mlxsw_sp_pg_buf_delay_get(mlxsw_sp, mtu, delay,
-						  pause_en);
+							pfc, pause_en);
-		mlxsw_sp_pg_buf_pack(pbmc_pl, i, thres + delay, thres, lossy);
+		mlxsw_sp_pg_buf_pack(pbmc_pl, i, thres_cells + delay_cells,
+				     thres_cells, lossy);
 	}
 
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pbmc), pbmc_pl);

drivers/net/ethernet/qlogic/qed/qed_iwarp.c

@@ -1688,6 +1688,15 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
 
 	eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
 
+	if (!ether_addr_equal(ethh->h_dest,
+			      p_hwfn->p_rdma_info->iwarp.mac_addr)) {
+		DP_VERBOSE(p_hwfn,
+			   QED_MSG_RDMA,
+			   "Got unexpected mac %pM instead of %pM\n",
+			   ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
+		return -EINVAL;
+	}
+
 	ether_addr_copy(remote_mac_addr, ethh->h_source);
 	ether_addr_copy(local_mac_addr, ethh->h_dest);
 
@@ -2605,7 +2614,7 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
 	struct qed_iwarp_info *iwarp_info;
 	struct qed_ll2_acquire_data data;
 	struct qed_ll2_cbs cbs;
-	u32 mpa_buff_size;
+	u32 buff_size;
 	u16 n_ooo_bufs;
 	int rc = 0;
 	int i;
@@ -2632,7 +2641,7 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
 
 	memset(&data, 0, sizeof(data));
 	data.input.conn_type = QED_LL2_TYPE_IWARP;
-	data.input.mtu = QED_IWARP_MAX_SYN_PKT_SIZE;
+	data.input.mtu = params->max_mtu;
 	data.input.rx_num_desc = QED_IWARP_LL2_SYN_RX_SIZE;
 	data.input.tx_num_desc = QED_IWARP_LL2_SYN_TX_SIZE;
 	data.input.tx_max_bds_per_packet = 1;	/* will never be fragmented */
@@ -2654,9 +2663,10 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
 		goto err;
 	}
 
+	buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
 	rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
 					 QED_IWARP_LL2_SYN_RX_SIZE,
-					 QED_IWARP_MAX_SYN_PKT_SIZE,
+					 buff_size,
 					 iwarp_info->ll2_syn_handle);
 	if (rc)
 		goto err;
@@ -2710,10 +2720,9 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
 	if (rc)
 		goto err;
 
-	mpa_buff_size = QED_IWARP_MAX_BUF_SIZE(params->max_mtu);
 	rc = qed_iwarp_ll2_alloc_buffers(p_hwfn,
 					 data.input.rx_num_desc,
-					 mpa_buff_size,
+					 buff_size,
 					 iwarp_info->ll2_mpa_handle);
 	if (rc)
 		goto err;
@@ -2726,7 +2735,7 @@ qed_iwarp_ll2_start(struct qed_hwfn *p_hwfn,
 
 	iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
 
-	iwarp_info->mpa_intermediate_buf = kzalloc(mpa_buff_size, GFP_KERNEL);
+	iwarp_info->mpa_intermediate_buf = kzalloc(buff_size, GFP_KERNEL);
 	if (!iwarp_info->mpa_intermediate_buf)
 		goto err;
 

drivers/net/ethernet/qlogic/qed/qed_iwarp.h

@@ -46,7 +46,6 @@ enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);
 
 #define QED_IWARP_LL2_SYN_TX_SIZE       (128)
 #define QED_IWARP_LL2_SYN_RX_SIZE       (256)
-#define QED_IWARP_MAX_SYN_PKT_SIZE      (128)
 
 #define QED_IWARP_LL2_OOO_DEF_TX_SIZE   (256)
 #define QED_IWARP_MAX_OOO		(16)

drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c

@@ -241,15 +241,18 @@ static inline void dwmac4_get_timestamp(void *desc, u32 ats, u64 *ts)
 static int dwmac4_rx_check_timestamp(void *desc)
 {
 	struct dma_desc *p = (struct dma_desc *)desc;
+	unsigned int rdes0 = le32_to_cpu(p->des0);
+	unsigned int rdes1 = le32_to_cpu(p->des1);
+	unsigned int rdes3 = le32_to_cpu(p->des3);
 	u32 own, ctxt;
 	int ret = 1;
 
-	own = p->des3 & RDES3_OWN;
+	own = rdes3 & RDES3_OWN;
-	ctxt = ((p->des3 & RDES3_CONTEXT_DESCRIPTOR)
+	ctxt = ((rdes3 & RDES3_CONTEXT_DESCRIPTOR)
 		>> RDES3_CONTEXT_DESCRIPTOR_SHIFT);
 
 	if (likely(!own && ctxt)) {
-		if ((p->des0 == 0xffffffff) && (p->des1 == 0xffffffff))
+		if ((rdes0 == 0xffffffff) && (rdes1 == 0xffffffff))
 			/* Corrupted value */
 			ret = -EINVAL;
 		else

drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

@@ -696,25 +696,27 @@ static int stmmac_ethtool_op_set_eee(struct net_device *dev,
 				     struct ethtool_eee *edata)
 {
 	struct stmmac_priv *priv = netdev_priv(dev);
+	int ret;
 
-	priv->eee_enabled = edata->eee_enabled;
+	if (!edata->eee_enabled) {
-
-	if (!priv->eee_enabled)
 		stmmac_disable_eee_mode(priv);
-	else {
+	} else {
 		/* We are asking for enabling the EEE but it is safe
 		 * to verify all by invoking the eee_init function.
 		 * In case of failure it will return an error.
 		 */
-		priv->eee_enabled = stmmac_eee_init(priv);
+		edata->eee_enabled = stmmac_eee_init(priv);
-		if (!priv->eee_enabled)
+		if (!edata->eee_enabled)
 			return -EOPNOTSUPP;
-
-		/* Do not change tx_lpi_timer in case of failure */
-		priv->tx_lpi_timer = edata->tx_lpi_timer;
 	}
 
-	return phy_ethtool_set_eee(dev->phydev, edata);
+	ret = phy_ethtool_set_eee(dev->phydev, edata);
+	if (ret)
+		return ret;
+
+	priv->eee_enabled = edata->eee_enabled;
+	priv->tx_lpi_timer = edata->tx_lpi_timer;
+	return 0;
 }
 
 static u32 stmmac_usec2riwt(u32 usec, struct stmmac_priv *priv)

drivers/net/ethernet/ti/netcp_core.c

@@ -259,7 +259,7 @@ static int netcp_module_probe(struct netcp_device *netcp_device,
 		const char *name;
 		char node_name[32];
 
-		if (of_property_read_string(node, "label", &name) < 0) {
+		if (of_property_read_string(child, "label", &name) < 0) {
 			snprintf(node_name, sizeof(node_name), "%pOFn", child);
 			name = node_name;
 		}

drivers/net/phy/xilinx_gmii2rgmii.c

@@ -44,7 +44,10 @@ static int xgmiitorgmii_read_status(struct phy_device *phydev)
 	u16 val = 0;
 	int err;
 
-	err = priv->phy_drv->read_status(phydev);
+	if (priv->phy_drv->read_status)
+		err = priv->phy_drv->read_status(phydev);
+	else
+		err = genphy_read_status(phydev);
 	if (err < 0)
 		return err;
 

drivers/net/usb/qmi_wwan.c

@@ -1201,8 +1201,8 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
 	{QMI_FIXED_INTF(0x1199, 0x68a2, 8)},	/* Sierra Wireless MC7710 in QMI mode */
 	{QMI_FIXED_INTF(0x1199, 0x68a2, 19)},	/* Sierra Wireless MC7710 in QMI mode */
-	{QMI_FIXED_INTF(0x1199, 0x68c0, 8)},	/* Sierra Wireless MC7304/MC7354 */
+	{QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 8)},	/* Sierra Wireless MC7304/MC7354, WP76xx */
-	{QMI_FIXED_INTF(0x1199, 0x68c0, 10)},	/* Sierra Wireless MC7304/MC7354 */
+	{QMI_QUIRK_SET_DTR(0x1199, 0x68c0, 10)},/* Sierra Wireless MC7304/MC7354 */
 	{QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
 	{QMI_FIXED_INTF(0x1199, 0x901f, 8)},    /* Sierra Wireless EM7355 */
 	{QMI_FIXED_INTF(0x1199, 0x9041, 8)},	/* Sierra Wireless MC7305/MC7355 */

drivers/net/usb/r8152.c

@@ -557,6 +557,7 @@ enum spd_duplex {
 /* MAC PASSTHRU */
 #define AD_MASK			0xfee0
 #define BND_MASK		0x0004
+#define BD_MASK			0x0001
 #define EFUSE			0xcfdb
 #define PASS_THRU_MASK		0x1
 
@@ -1176,9 +1177,9 @@ static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
 			return -ENODEV;
 		}
 	} else {
-		/* test for RTL8153-BND */
+		/* test for RTL8153-BND and RTL8153-BD */
 		ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
-		if ((ocp_data & BND_MASK) == 0) {
+		if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK)) {
 			netif_dbg(tp, probe, tp->netdev,
 				  "Invalid variant for MAC pass through\n");
 			return -ENODEV;

drivers/net/wireless/mediatek/mt76/mt76x0/usb.c

@@ -158,6 +158,32 @@ static const struct ieee80211_ops mt76x0u_ops = {
 	.get_txpower = mt76x02_get_txpower,
 };
 
+static int mt76x0u_init_hardware(struct mt76x02_dev *dev)
+{
+	int err;
+
+	mt76x0_chip_onoff(dev, true, true);
+
+	if (!mt76x02_wait_for_mac(&dev->mt76))
+		return -ETIMEDOUT;
+
+	err = mt76x0u_mcu_init(dev);
+	if (err < 0)
+		return err;
+
+	mt76x0_init_usb_dma(dev);
+	err = mt76x0_init_hardware(dev);
+	if (err < 0)
+		return err;
+
+	mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
+	mt76_wr(dev, MT_TXOP_CTRL_CFG,
+		FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
+		FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
+
+	return 0;
+}
+
 static int mt76x0u_register_device(struct mt76x02_dev *dev)
 {
 	struct ieee80211_hw *hw = dev->mt76.hw;
@@ -171,26 +197,10 @@ static int mt76x0u_register_device(struct mt76x02_dev *dev)
 	if (err < 0)
 		goto out_err;
 
-	mt76x0_chip_onoff(dev, true, true);
+	err = mt76x0u_init_hardware(dev);
-	if (!mt76x02_wait_for_mac(&dev->mt76)) {
-		err = -ETIMEDOUT;
-		goto out_err;
-	}
-
-	err = mt76x0u_mcu_init(dev);
 	if (err < 0)
 		goto out_err;
 
-	mt76x0_init_usb_dma(dev);
-	err = mt76x0_init_hardware(dev);
-	if (err < 0)
-		goto out_err;
-
-	mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e);
-	mt76_wr(dev, MT_TXOP_CTRL_CFG,
-		FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) |
-		FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58));
-
 	err = mt76x0_register_device(dev);
 	if (err < 0)
 		goto out_err;
@@ -301,6 +311,8 @@ static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf,
 
 	mt76u_stop_queues(&dev->mt76);
 	mt76x0u_mac_stop(dev);
+	clear_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state);
+	mt76x0_chip_onoff(dev, false, false);
 	usb_kill_urb(usb->mcu.res.urb);
 
 	return 0;
@@ -328,7 +340,7 @@ static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf)
 	tasklet_enable(&usb->rx_tasklet);
 	tasklet_enable(&usb->tx_tasklet);
 
-	ret = mt76x0_init_hardware(dev);
+	ret = mt76x0u_init_hardware(dev);
 	if (ret)
 		goto err;
 

drivers/vhost/vhost.c

@@ -1788,7 +1788,7 @@ static int log_used(struct vhost_virtqueue *vq, u64 used_offset, u64 len)
 
 	ret = translate_desc(vq, (uintptr_t)vq->used + used_offset,
 			     len, iov, 64, VHOST_ACCESS_WO);
-	if (ret)
+	if (ret < 0)
 		return ret;
 
 	for (i = 0; i < ret; i++) {

include/linux/netdev_features.h

@@ -11,6 +11,8 @@
 #define _LINUX_NETDEV_FEATURES_H
 
 #include <linux/types.h>
+#include <linux/bitops.h>
+#include <asm/byteorder.h>
 
 typedef u64 netdev_features_t;
 
@@ -154,8 +156,26 @@ enum {
 #define NETIF_F_HW_TLS_TX	__NETIF_F(HW_TLS_TX)
 #define NETIF_F_HW_TLS_RX	__NETIF_F(HW_TLS_RX)
 
-#define for_each_netdev_feature(mask_addr, bit)	\
+/* Finds the next feature with the highest number of the range of start till 0.
-	for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
+ */
+static inline int find_next_netdev_feature(u64 feature, unsigned long start)
+{
+	/* like BITMAP_LAST_WORD_MASK() for u64
+	 * this sets the most significant 64 - start to 0.
+	 */
+	feature &= ~0ULL >> (-start & ((sizeof(feature) * 8) - 1));
+
+	return fls64(feature) - 1;
+}
+
+/* This goes for the MSB to the LSB through the set feature bits,
+ * mask_addr should be a u64 and bit an int
+ */
+#define for_each_netdev_feature(mask_addr, bit)				\
+	for ((bit) = find_next_netdev_feature((mask_addr),		\
+					      NETDEV_FEATURE_COUNT);	\
+	     (bit) >= 0;						\
+	     (bit) = find_next_netdev_feature((mask_addr), (bit) - 1))
 
 /* Features valid for ethtool to change */
 /* = all defined minus driver/device-class-related */

include/linux/skbuff.h

@@ -2434,7 +2434,7 @@ static inline void skb_probe_transport_header(struct sk_buff *skb,
 
 	if (skb_flow_dissect_flow_keys_basic(skb, &keys, NULL, 0, 0, 0, 0))
 		skb_set_transport_header(skb, keys.control.thoff);
-	else
+	else if (offset_hint >= 0)
 		skb_set_transport_header(skb, offset_hint);
 }
 
@@ -4212,6 +4212,12 @@ static inline bool skb_is_gso_sctp(const struct sk_buff *skb)
 	return skb_shinfo(skb)->gso_type & SKB_GSO_SCTP;
 }
 
+static inline bool skb_is_gso_tcp(const struct sk_buff *skb)
+{
+	return skb_is_gso(skb) &&
+	       skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6);
+}
+
 static inline void skb_gso_reset(struct sk_buff *skb)
 {
 	skb_shinfo(skb)->gso_size = 0;

include/linux/virtio_net.h

@@ -57,6 +57,15 @@ static inline int virtio_net_hdr_to_skb(struct sk_buff *skb,
 
 		if (!skb_partial_csum_set(skb, start, off))
 			return -EINVAL;
+	} else {
+		/* gso packets without NEEDS_CSUM do not set transport_offset.
+		 * probe and drop if does not match one of the above types.
+		 */
+		if (gso_type) {
+			skb_probe_transport_header(skb, -1);
+			if (!skb_transport_header_was_set(skb))
+				return -EINVAL;
+		}
 	}
 
 	if (hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {

kernel/bpf/stackmap.c

@@ -44,7 +44,7 @@ static void do_up_read(struct irq_work *entry)
 	struct stack_map_irq_work *work;
 
 	work = container_of(entry, struct stack_map_irq_work, irq_work);
-	up_read(work->sem);
+	up_read_non_owner(work->sem);
 	work->sem = NULL;
 }
 
@@ -338,6 +338,12 @@ static void stack_map_get_build_id_offset(struct bpf_stack_build_id *id_offs,
 	} else {
 		work->sem = &current->mm->mmap_sem;
 		irq_work_queue(&work->irq_work);
+		/*
+		 * The irq_work will release the mmap_sem with
+		 * up_read_non_owner(). The rwsem_release() is called
+		 * here to release the lock from lockdep's perspective.
+		 */
+		rwsem_release(&current->mm->mmap_sem.dep_map, 1, _RET_IP_);
 	}
 }
 

kernel/bpf/verifier.c

@@ -1617,12 +1617,13 @@ static int check_flow_keys_access(struct bpf_verifier_env *env, int off,
 	return 0;
 }
 
-static int check_sock_access(struct bpf_verifier_env *env, u32 regno, int off,
+static int check_sock_access(struct bpf_verifier_env *env, int insn_idx,
-			     int size, enum bpf_access_type t)
+			     u32 regno, int off, int size,
+			     enum bpf_access_type t)
 {
 	struct bpf_reg_state *regs = cur_regs(env);
 	struct bpf_reg_state *reg = &regs[regno];
-	struct bpf_insn_access_aux info;
+	struct bpf_insn_access_aux info = {};
 
 	if (reg->smin_value < 0) {
 		verbose(env, "R%d min value is negative, either use unsigned index or do a if (index >=0) check.\n",
@@ -1636,6 +1637,8 @@ static int check_sock_access(struct bpf_verifier_env *env, u32 regno, int off,
 		return -EACCES;
 	}
 
+	env->insn_aux_data[insn_idx].ctx_field_size = info.ctx_field_size;
+
 	return 0;
 }
 
@@ -2032,7 +2035,7 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn
 			verbose(env, "cannot write into socket\n");
 			return -EACCES;
 		}
-		err = check_sock_access(env, regno, off, size, t);
+		err = check_sock_access(env, insn_idx, regno, off, size, t);
 		if (!err && value_regno >= 0)
 			mark_reg_unknown(env, regs, value_regno);
 	} else {

mm/page_alloc.c

@@ -4675,11 +4675,11 @@ refill:
 		/* Even if we own the page, we do not use atomic_set().
 		 * This would break get_page_unless_zero() users.
 		 */
-		page_ref_add(page, size);
+		page_ref_add(page, PAGE_FRAG_CACHE_MAX_SIZE);
 
 		/* reset page count bias and offset to start of new frag */
 		nc->pfmemalloc = page_is_pfmemalloc(page);
-		nc->pagecnt_bias = size + 1;
+		nc->pagecnt_bias = PAGE_FRAG_CACHE_MAX_SIZE + 1;
 		nc->offset = size;
 	}
 
@@ -4695,10 +4695,10 @@ refill:
 		size = nc->size;
 #endif
 		/* OK, page count is 0, we can safely set it */
-		set_page_count(page, size + 1);
+		set_page_count(page, PAGE_FRAG_CACHE_MAX_SIZE + 1);
 
 		/* reset page count bias and offset to start of new frag */
-		nc->pagecnt_bias = size + 1;
+		nc->pagecnt_bias = PAGE_FRAG_CACHE_MAX_SIZE + 1;
 		offset = size - fragsz;
 	}
 

net/core/dev.c

@@ -8152,7 +8152,7 @@ static netdev_features_t netdev_sync_upper_features(struct net_device *lower,
 	netdev_features_t feature;
 	int feature_bit;
 
-	for_each_netdev_feature(&upper_disables, feature_bit) {
+	for_each_netdev_feature(upper_disables, feature_bit) {
 		feature = __NETIF_F_BIT(feature_bit);
 		if (!(upper->wanted_features & feature)
 		    && (features & feature)) {
@@ -8172,7 +8172,7 @@ static void netdev_sync_lower_features(struct net_device *upper,
 	netdev_features_t feature;
 	int feature_bit;
 
-	for_each_netdev_feature(&upper_disables, feature_bit) {
+	for_each_netdev_feature(upper_disables, feature_bit) {
 		feature = __NETIF_F_BIT(feature_bit);
 		if (!(features & feature) && (lower->features & feature)) {
 			netdev_dbg(upper, "Disabling feature %pNF on lower dev %s.\n",

net/core/filter.c

@@ -2789,8 +2789,7 @@ static int bpf_skb_proto_4_to_6(struct sk_buff *skb)
 	u32 off = skb_mac_header_len(skb);
 	int ret;
 
-	/* SCTP uses GSO_BY_FRAGS, thus cannot adjust it. */
+	if (!skb_is_gso_tcp(skb))
-	if (skb_is_gso(skb) && unlikely(skb_is_gso_sctp(skb)))
 		return -ENOTSUPP;
 
 	ret = skb_cow(skb, len_diff);
@@ -2831,8 +2830,7 @@ static int bpf_skb_proto_6_to_4(struct sk_buff *skb)
 	u32 off = skb_mac_header_len(skb);
 	int ret;
 
-	/* SCTP uses GSO_BY_FRAGS, thus cannot adjust it. */
+	if (!skb_is_gso_tcp(skb))
-	if (skb_is_gso(skb) && unlikely(skb_is_gso_sctp(skb)))
 		return -ENOTSUPP;
 
 	ret = skb_unclone(skb, GFP_ATOMIC);
@@ -2957,8 +2955,7 @@ static int bpf_skb_net_grow(struct sk_buff *skb, u32 len_diff)
 	u32 off = skb_mac_header_len(skb) + bpf_skb_net_base_len(skb);
 	int ret;
 
-	/* SCTP uses GSO_BY_FRAGS, thus cannot adjust it. */
+	if (!skb_is_gso_tcp(skb))
-	if (skb_is_gso(skb) && unlikely(skb_is_gso_sctp(skb)))
 		return -ENOTSUPP;
 
 	ret = skb_cow(skb, len_diff);
@@ -2987,8 +2984,7 @@ static int bpf_skb_net_shrink(struct sk_buff *skb, u32 len_diff)
 	u32 off = skb_mac_header_len(skb) + bpf_skb_net_base_len(skb);
 	int ret;
 
-	/* SCTP uses GSO_BY_FRAGS, thus cannot adjust it. */
+	if (!skb_is_gso_tcp(skb))
-	if (skb_is_gso(skb) && unlikely(skb_is_gso_sctp(skb)))
 		return -ENOTSUPP;
 
 	ret = skb_unclone(skb, GFP_ATOMIC);

net/core/skbuff.c

@@ -356,6 +356,8 @@ static void *__netdev_alloc_frag(unsigned int fragsz, gfp_t gfp_mask)
  */
 void *netdev_alloc_frag(unsigned int fragsz)
 {
+	fragsz = SKB_DATA_ALIGN(fragsz);
+
 	return __netdev_alloc_frag(fragsz, GFP_ATOMIC);
 }
 EXPORT_SYMBOL(netdev_alloc_frag);
@@ -369,6 +371,8 @@ static void *__napi_alloc_frag(unsigned int fragsz, gfp_t gfp_mask)
 
 void *napi_alloc_frag(unsigned int fragsz)
 {
+	fragsz = SKB_DATA_ALIGN(fragsz);
+
 	return __napi_alloc_frag(fragsz, GFP_ATOMIC);
 }
 EXPORT_SYMBOL(napi_alloc_frag);

net/ipv4/tcp.c

@@ -2528,6 +2528,7 @@ void tcp_write_queue_purge(struct sock *sk)
 	sk_mem_reclaim(sk);
 	tcp_clear_all_retrans_hints(tcp_sk(sk));
 	tcp_sk(sk)->packets_out = 0;
+	inet_csk(sk)->icsk_backoff = 0;
 }
 
 int tcp_disconnect(struct sock *sk, int flags)
@@ -2576,7 +2577,6 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tp->write_seq += tp->max_window + 2;
 	if (tp->write_seq == 0)
 		tp->write_seq = 1;
-	icsk->icsk_backoff = 0;
 	tp->snd_cwnd = 2;
 	icsk->icsk_probes_out = 0;
 	tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;

net/ipv4/tcp_ipv4.c

@@ -536,12 +536,15 @@ int tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
 		if (sock_owned_by_user(sk))
 			break;
 
+		skb = tcp_rtx_queue_head(sk);
+		if (WARN_ON_ONCE(!skb))
+			break;
+
 		icsk->icsk_backoff--;
 		icsk->icsk_rto = tp->srtt_us ? __tcp_set_rto(tp) :
 					       TCP_TIMEOUT_INIT;
 		icsk->icsk_rto = inet_csk_rto_backoff(icsk, TCP_RTO_MAX);
 
-		skb = tcp_rtx_queue_head(sk);
 
 		tcp_mstamp_refresh(tp);
 		delta_us = (u32)(tp->tcp_mstamp - tcp_skb_timestamp_us(skb));

net/ipv6/ip6_gre.c

@@ -1719,6 +1719,24 @@ static int ip6erspan_tap_validate(struct nlattr *tb[], struct nlattr *data[],
 	return 0;
 }
 
+static void ip6erspan_set_version(struct nlattr *data[],
+				  struct __ip6_tnl_parm *parms)
+{
+	parms->erspan_ver = 1;
+	if (data[IFLA_GRE_ERSPAN_VER])
+		parms->erspan_ver = nla_get_u8(data[IFLA_GRE_ERSPAN_VER]);
+
+	if (parms->erspan_ver == 1) {
+		if (data[IFLA_GRE_ERSPAN_INDEX])
+			parms->index = nla_get_u32(data[IFLA_GRE_ERSPAN_INDEX]);
+	} else if (parms->erspan_ver == 2) {
+		if (data[IFLA_GRE_ERSPAN_DIR])
+			parms->dir = nla_get_u8(data[IFLA_GRE_ERSPAN_DIR]);
+		if (data[IFLA_GRE_ERSPAN_HWID])
+			parms->hwid = nla_get_u16(data[IFLA_GRE_ERSPAN_HWID]);
+	}
+}
+
 static void ip6gre_netlink_parms(struct nlattr *data[],
 				struct __ip6_tnl_parm *parms)
 {
@@ -1767,20 +1785,6 @@ static void ip6gre_netlink_parms(struct nlattr *data[],
 
 	if (data[IFLA_GRE_COLLECT_METADATA])
 		parms->collect_md = true;
-
-	parms->erspan_ver = 1;
-	if (data[IFLA_GRE_ERSPAN_VER])
-		parms->erspan_ver = nla_get_u8(data[IFLA_GRE_ERSPAN_VER]);
-
-	if (parms->erspan_ver == 1) {
-		if (data[IFLA_GRE_ERSPAN_INDEX])
-			parms->index = nla_get_u32(data[IFLA_GRE_ERSPAN_INDEX]);
-	} else if (parms->erspan_ver == 2) {
-		if (data[IFLA_GRE_ERSPAN_DIR])
-			parms->dir = nla_get_u8(data[IFLA_GRE_ERSPAN_DIR]);
-		if (data[IFLA_GRE_ERSPAN_HWID])
-			parms->hwid = nla_get_u16(data[IFLA_GRE_ERSPAN_HWID]);
-	}
 }
 
 static int ip6gre_tap_init(struct net_device *dev)
@@ -2203,6 +2207,7 @@ static int ip6erspan_newlink(struct net *src_net, struct net_device *dev,
 	int err;
 
 	ip6gre_netlink_parms(data, &nt->parms);
+	ip6erspan_set_version(data, &nt->parms);
 	ign = net_generic(net, ip6gre_net_id);
 
 	if (nt->parms.collect_md) {
@@ -2248,6 +2253,7 @@ static int ip6erspan_changelink(struct net_device *dev, struct nlattr *tb[],
 	if (IS_ERR(t))
 		return PTR_ERR(t);
 
+	ip6erspan_set_version(data, &p);
 	ip6gre_tunnel_unlink_md(ign, t);
 	ip6gre_tunnel_unlink(ign, t);
 	ip6erspan_tnl_change(t, &p, !tb[IFLA_MTU]);

net/mac80211/cfg.c

@@ -941,6 +941,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 		      BSS_CHANGED_P2P_PS |
 		      BSS_CHANGED_TXPOWER;
 	int err;
+	int prev_beacon_int;
 
 	old = sdata_dereference(sdata->u.ap.beacon, sdata);
 	if (old)
@@ -963,6 +964,7 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 
 	sdata->needed_rx_chains = sdata->local->rx_chains;
 
+	prev_beacon_int = sdata->vif.bss_conf.beacon_int;
 	sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 
 	if (params->he_cap)
@@ -974,8 +976,10 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 	if (!err)
 		ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 	mutex_unlock(&local->mtx);
-	if (err)
+	if (err) {
+		sdata->vif.bss_conf.beacon_int = prev_beacon_int;
 		return err;
+	}
 
 	/*
 	 * Apply control port protocol, this allows us to

net/mac80211/mesh.h

@@ -70,6 +70,7 @@ enum mesh_deferred_task_flags {
  * @dst: mesh path destination mac address
  * @mpp: mesh proxy mac address
  * @rhash: rhashtable list pointer
+ * @walk_list: linked list containing all mesh_path objects.
  * @gate_list: list pointer for known gates list
  * @sdata: mesh subif
  * @next_hop: mesh neighbor to which frames for this destination will be
@@ -105,6 +106,7 @@ struct mesh_path {
 	u8 dst[ETH_ALEN];
 	u8 mpp[ETH_ALEN];	/* used for MPP or MAP */
 	struct rhash_head rhash;
+	struct hlist_node walk_list;
 	struct hlist_node gate_list;
 	struct ieee80211_sub_if_data *sdata;
 	struct sta_info __rcu *next_hop;
@@ -133,12 +135,16 @@ struct mesh_path {
  * gate's mpath may or may not be resolved and active.
  * @gates_lock: protects updates to known_gates
  * @rhead: the rhashtable containing struct mesh_paths, keyed by dest addr
+ * @walk_head: linked list containging all mesh_path objects
+ * @walk_lock: lock protecting walk_head
  * @entries: number of entries in the table
  */
 struct mesh_table {
 	struct hlist_head known_gates;
 	spinlock_t gates_lock;
 	struct rhashtable rhead;
+	struct hlist_head walk_head;
+	spinlock_t walk_lock;
 	atomic_t entries;		/* Up to MAX_MESH_NEIGHBOURS */
 };
 

net/mac80211/mesh_pathtbl.c

@@ -59,8 +59,10 @@ static struct mesh_table *mesh_table_alloc(void)
 		return NULL;
 
 	INIT_HLIST_HEAD(&newtbl->known_gates);
+	INIT_HLIST_HEAD(&newtbl->walk_head);
 	atomic_set(&newtbl->entries,  0);
 	spin_lock_init(&newtbl->gates_lock);
+	spin_lock_init(&newtbl->walk_lock);
 
 	return newtbl;
 }
@@ -249,28 +251,15 @@ mpp_path_lookup(struct ieee80211_sub_if_data *sdata, const u8 *dst)
 static struct mesh_path *
 __mesh_path_lookup_by_idx(struct mesh_table *tbl, int idx)
 {
-	int i = 0, ret;
+	int i = 0;
-	struct mesh_path *mpath = NULL;
+	struct mesh_path *mpath;
-	struct rhashtable_iter iter;
 
-	ret = rhashtable_walk_init(&tbl->rhead, &iter, GFP_ATOMIC);
+	hlist_for_each_entry_rcu(mpath, &tbl->walk_head, walk_list) {
-	if (ret)
-		return NULL;
-
-	rhashtable_walk_start(&iter);
-
-	while ((mpath = rhashtable_walk_next(&iter))) {
-		if (IS_ERR(mpath) && PTR_ERR(mpath) == -EAGAIN)
-			continue;
-		if (IS_ERR(mpath))
-			break;
 		if (i++ == idx)
 			break;
 	}
-	rhashtable_walk_stop(&iter);
-	rhashtable_walk_exit(&iter);
 
-	if (IS_ERR(mpath) || !mpath)
+	if (!mpath)
 		return NULL;
 
 	if (mpath_expired(mpath)) {
@@ -432,6 +421,7 @@ struct mesh_path *mesh_path_add(struct ieee80211_sub_if_data *sdata,
 		return ERR_PTR(-ENOMEM);
 
 	tbl = sdata->u.mesh.mesh_paths;
+	spin_lock_bh(&tbl->walk_lock);
 	do {
 		ret = rhashtable_lookup_insert_fast(&tbl->rhead,
 						    &new_mpath->rhash,
@@ -441,20 +431,20 @@ struct mesh_path *mesh_path_add(struct ieee80211_sub_if_data *sdata,
 			mpath = rhashtable_lookup_fast(&tbl->rhead,
 						       dst,
 						       mesh_rht_params);
-
+		else if (!ret)
+			hlist_add_head(&new_mpath->walk_list, &tbl->walk_head);
 	} while (unlikely(ret == -EEXIST && !mpath));
+	spin_unlock_bh(&tbl->walk_lock);
 
-	if (ret && ret != -EEXIST)
+	if (ret) {
-		return ERR_PTR(ret);
-
-	/* At this point either new_mpath was added, or we found a
-	 * matching entry already in the table; in the latter case
-	 * free the unnecessary new entry.
-	 */
-	if (ret == -EEXIST) {
 		kfree(new_mpath);
+
+		if (ret != -EEXIST)
+			return ERR_PTR(ret);
+
 		new_mpath = mpath;
 	}
+
 	sdata->u.mesh.mesh_paths_generation++;
 	return new_mpath;
 }
@@ -480,9 +470,17 @@ int mpp_path_add(struct ieee80211_sub_if_data *sdata,
 
 	memcpy(new_mpath->mpp, mpp, ETH_ALEN);
 	tbl = sdata->u.mesh.mpp_paths;
+
+	spin_lock_bh(&tbl->walk_lock);
 	ret = rhashtable_lookup_insert_fast(&tbl->rhead,
 					    &new_mpath->rhash,
 					    mesh_rht_params);
+	if (!ret)
+		hlist_add_head_rcu(&new_mpath->walk_list, &tbl->walk_head);
+	spin_unlock_bh(&tbl->walk_lock);
+
+	if (ret)
+		kfree(new_mpath);
 
 	sdata->u.mesh.mpp_paths_generation++;
 	return ret;
@@ -503,20 +501,9 @@ void mesh_plink_broken(struct sta_info *sta)
 	struct mesh_table *tbl = sdata->u.mesh.mesh_paths;
 	static const u8 bcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 	struct mesh_path *mpath;
-	struct rhashtable_iter iter;
-	int ret;
 
-	ret = rhashtable_walk_init(&tbl->rhead, &iter, GFP_ATOMIC);
+	rcu_read_lock();
-	if (ret)
+	hlist_for_each_entry_rcu(mpath, &tbl->walk_head, walk_list) {
-		return;
-
-	rhashtable_walk_start(&iter);
-
-	while ((mpath = rhashtable_walk_next(&iter))) {
-		if (IS_ERR(mpath) && PTR_ERR(mpath) == -EAGAIN)
-			continue;
-		if (IS_ERR(mpath))
-			break;
 		if (rcu_access_pointer(mpath->next_hop) == sta &&
 		    mpath->flags & MESH_PATH_ACTIVE &&
 		    !(mpath->flags & MESH_PATH_FIXED)) {
@@ -530,8 +517,7 @@ void mesh_plink_broken(struct sta_info *sta)
 				WLAN_REASON_MESH_PATH_DEST_UNREACHABLE, bcast);
 		}
 	}
-	rhashtable_walk_stop(&iter);
+	rcu_read_unlock();
-	rhashtable_walk_exit(&iter);
 }
 
 static void mesh_path_free_rcu(struct mesh_table *tbl,
@@ -551,6 +537,7 @@ static void mesh_path_free_rcu(struct mesh_table *tbl,
 
 static void __mesh_path_del(struct mesh_table *tbl, struct mesh_path *mpath)
 {
+	hlist_del_rcu(&mpath->walk_list);
 	rhashtable_remove_fast(&tbl->rhead, &mpath->rhash, mesh_rht_params);
 	mesh_path_free_rcu(tbl, mpath);
 }
@@ -571,27 +558,14 @@ void mesh_path_flush_by_nexthop(struct sta_info *sta)
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
 	struct mesh_table *tbl = sdata->u.mesh.mesh_paths;
 	struct mesh_path *mpath;
-	struct rhashtable_iter iter;
+	struct hlist_node *n;
-	int ret;
-
-	ret = rhashtable_walk_init(&tbl->rhead, &iter, GFP_ATOMIC);
-	if (ret)
-		return;
-
-	rhashtable_walk_start(&iter);
-
-	while ((mpath = rhashtable_walk_next(&iter))) {
-		if (IS_ERR(mpath) && PTR_ERR(mpath) == -EAGAIN)
-			continue;
-		if (IS_ERR(mpath))
-			break;
 
+	spin_lock_bh(&tbl->walk_lock);
+	hlist_for_each_entry_safe(mpath, n, &tbl->walk_head, walk_list) {
 		if (rcu_access_pointer(mpath->next_hop) == sta)
 			__mesh_path_del(tbl, mpath);
 	}
-
+	spin_unlock_bh(&tbl->walk_lock);
-	rhashtable_walk_stop(&iter);
-	rhashtable_walk_exit(&iter);
 }
 
 static void mpp_flush_by_proxy(struct ieee80211_sub_if_data *sdata,
@@ -599,51 +573,26 @@ static void mpp_flush_by_proxy(struct ieee80211_sub_if_data *sdata,
 {
 	struct mesh_table *tbl = sdata->u.mesh.mpp_paths;
 	struct mesh_path *mpath;
-	struct rhashtable_iter iter;
+	struct hlist_node *n;
-	int ret;
-
-	ret = rhashtable_walk_init(&tbl->rhead, &iter, GFP_ATOMIC);
-	if (ret)
-		return;
-
-	rhashtable_walk_start(&iter);
-
-	while ((mpath = rhashtable_walk_next(&iter))) {
-		if (IS_ERR(mpath) && PTR_ERR(mpath) == -EAGAIN)
-			continue;
-		if (IS_ERR(mpath))
-			break;
 
+	spin_lock_bh(&tbl->walk_lock);
+	hlist_for_each_entry_safe(mpath, n, &tbl->walk_head, walk_list) {
 		if (ether_addr_equal(mpath->mpp, proxy))
 			__mesh_path_del(tbl, mpath);
 	}
-
+	spin_unlock_bh(&tbl->walk_lock);
-	rhashtable_walk_stop(&iter);
-	rhashtable_walk_exit(&iter);
 }
 
 static void table_flush_by_iface(struct mesh_table *tbl)
 {
 	struct mesh_path *mpath;
-	struct rhashtable_iter iter;
+	struct hlist_node *n;
-	int ret;
 
-	ret = rhashtable_walk_init(&tbl->rhead, &iter, GFP_ATOMIC);
+	spin_lock_bh(&tbl->walk_lock);
-	if (ret)
+	hlist_for_each_entry_safe(mpath, n, &tbl->walk_head, walk_list) {
-		return;
-
-	rhashtable_walk_start(&iter);
-
-	while ((mpath = rhashtable_walk_next(&iter))) {
-		if (IS_ERR(mpath) && PTR_ERR(mpath) == -EAGAIN)
-			continue;
-		if (IS_ERR(mpath))
-			break;
 		__mesh_path_del(tbl, mpath);
 	}
-
+	spin_unlock_bh(&tbl->walk_lock);
-	rhashtable_walk_stop(&iter);
-	rhashtable_walk_exit(&iter);
 }
 
 /**
@@ -675,15 +624,15 @@ static int table_path_del(struct mesh_table *tbl,
 {
 	struct mesh_path *mpath;
 
-	rcu_read_lock();
+	spin_lock_bh(&tbl->walk_lock);
 	mpath = rhashtable_lookup_fast(&tbl->rhead, addr, mesh_rht_params);
 	if (!mpath) {
-		rcu_read_unlock();
+		spin_unlock_bh(&tbl->walk_lock);
 		return -ENXIO;
 	}
 
 	__mesh_path_del(tbl, mpath);
-	rcu_read_unlock();
+	spin_unlock_bh(&tbl->walk_lock);
 	return 0;
 }
 
@@ -854,28 +803,16 @@ void mesh_path_tbl_expire(struct ieee80211_sub_if_data *sdata,
 			  struct mesh_table *tbl)
 {
 	struct mesh_path *mpath;
-	struct rhashtable_iter iter;
+	struct hlist_node *n;
-	int ret;
 
-	ret = rhashtable_walk_init(&tbl->rhead, &iter, GFP_KERNEL);
+	spin_lock_bh(&tbl->walk_lock);
-	if (ret)
+	hlist_for_each_entry_safe(mpath, n, &tbl->walk_head, walk_list) {
-		return;
-
-	rhashtable_walk_start(&iter);
-
-	while ((mpath = rhashtable_walk_next(&iter))) {
-		if (IS_ERR(mpath) && PTR_ERR(mpath) == -EAGAIN)
-			continue;
-		if (IS_ERR(mpath))
-			break;
 		if ((!(mpath->flags & MESH_PATH_RESOLVING)) &&
 		    (!(mpath->flags & MESH_PATH_FIXED)) &&
 		     time_after(jiffies, mpath->exp_time + MESH_PATH_EXPIRE))
 			__mesh_path_del(tbl, mpath);
 	}
-
+	spin_unlock_bh(&tbl->walk_lock);
-	rhashtable_walk_stop(&iter);
-	rhashtable_walk_exit(&iter);
 }
 
 void mesh_path_expire(struct ieee80211_sub_if_data *sdata)

net/netfilter/ipvs/ip_vs_ctl.c

@@ -896,12 +896,13 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user_kern *udest,
 {
 	struct ip_vs_dest *dest;
 	unsigned int atype, i;
-	int ret = 0;
 
 	EnterFunction(2);
 
 #ifdef CONFIG_IP_VS_IPV6
 	if (udest->af == AF_INET6) {
+		int ret;
+
 		atype = ipv6_addr_type(&udest->addr.in6);
 		if ((!(atype & IPV6_ADDR_UNICAST) ||
 			atype & IPV6_ADDR_LINKLOCAL) &&

net/netfilter/nf_tables_api.c

@@ -313,6 +313,9 @@ static int nft_delrule_by_chain(struct nft_ctx *ctx)
 	int err;
 
 	list_for_each_entry(rule, &ctx->chain->rules, list) {
+		if (!nft_is_active_next(ctx->net, rule))
+			continue;
+
 		err = nft_delrule(ctx, rule);
 		if (err < 0)
 			return err;

net/xdp/xdp_umem.c

@@ -125,9 +125,10 @@ int xdp_umem_assign_dev(struct xdp_umem *umem, struct net_device *dev,
 	return 0;
 
 err_unreg_umem:
-	xdp_clear_umem_at_qid(dev, queue_id);
 	if (!force_zc)
 		err = 0; /* fallback to copy mode */
+	if (err)
+		xdp_clear_umem_at_qid(dev, queue_id);
 out_rtnl_unlock:
 	rtnl_unlock();
 	return err;
@@ -259,10 +260,10 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem)
 	if (!umem->pgs)
 		return -ENOMEM;
 
-	down_write(&current->mm->mmap_sem);
+	down_read(&current->mm->mmap_sem);
-	npgs = get_user_pages(umem->address, umem->npgs,
+	npgs = get_user_pages_longterm(umem->address, umem->npgs,
-			      gup_flags, &umem->pgs[0], NULL);
+				       gup_flags, &umem->pgs[0], NULL);
-	up_write(&current->mm->mmap_sem);
+	up_read(&current->mm->mmap_sem);
 
 	if (npgs != umem->npgs) {
 		if (npgs >= 0) {

net/xdp/xsk.c

@@ -669,6 +669,8 @@ static int xsk_mmap(struct file *file, struct socket *sock,
 		if (!umem)
 			return -EINVAL;
 
+		/* Matches the smp_wmb() in XDP_UMEM_REG */
+		smp_rmb();
 		if (offset == XDP_UMEM_PGOFF_FILL_RING)
 			q = READ_ONCE(umem->fq);
 		else if (offset == XDP_UMEM_PGOFF_COMPLETION_RING)
@@ -678,6 +680,8 @@ static int xsk_mmap(struct file *file, struct socket *sock,
 	if (!q)
 		return -EINVAL;
 
+	/* Matches the smp_wmb() in xsk_init_queue */
+	smp_rmb();
 	qpg = virt_to_head_page(q->ring);
 	if (size > (PAGE_SIZE << compound_order(qpg)))
 		return -EINVAL;