Networking fixes for 5.17-rc1, including fixes from netfilter, bpf.

Current release - regressions:
 
  - fix memory leaks in the skb free deferral scheme if upper layer
    protocols are used, i.e. in-kernel TCP readers like TLS
 
 Current release - new code bugs:
 
  - nf_tables: fix NULL check typo in _clone() functions
 
  - change the default to y for Vertexcom vendor Kconfig
 
  - a couple of fixes to incorrect uses of ref tracking
 
  - two fixes for constifying netdev->dev_addr
 
 Previous releases - regressions:
 
  - bpf:
    - various verifier fixes mainly around register offset handling
      when passed to helper functions
    - fix mount source displayed for bpffs (none -> bpffs)
 
  - bonding:
    - fix extraction of ports for connection hash calculation
    - fix bond_xmit_broadcast return value when some devices are down
 
  - phy: marvell: add Marvell specific PHY loopback
 
  - sch_api: don't skip qdisc attach on ingress, prevent ref leak
 
  - htb: restore minimal packet size handling in rate control
 
  - sfp: fix high power modules without diagnostic monitoring
 
  - mscc: ocelot:
    - don't let phylink re-enable TX PAUSE on the NPI port
    - don't dereference NULL pointers with shared tc filters
 
  - smsc95xx: correct reset handling for LAN9514
 
  - cpsw: avoid alignment faults by taking NET_IP_ALIGN into account
 
  - phy: micrel: use kszphy_suspend/_resume for irq aware devices,
    avoid races with the interrupt
 
 Previous releases - always broken:
 
  - xdp: check prog type before updating BPF link
 
  - smc: resolve various races around abnormal connection termination
 
  - sit: allow encapsulated IPv6 traffic to be delivered locally
 
  - axienet: fix init/reset handling, add missing barriers,
    read the right status words, stop queues correctly
 
  - add missing dev_put() in sock_timestamping_bind_phc()
 
 Misc:
 
  - ipv4: prevent accidentally passing RTO_ONLINK to
    ip_route_output_key_hash() by sanitizing flags
 
  - ipv4: avoid quadratic behavior in netns dismantle
 
  - stmmac: dwmac-oxnas: add support for OX810SE
 
  - fsl: xgmac_mdio: add workaround for erratum A-009885
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter, bpf.

  Quite a handful of old regression fixes but most of those are
  pre-5.16.

  Current release - regressions:

   - fix memory leaks in the skb free deferral scheme if upper layer
     protocols are used, i.e. in-kernel TCP readers like TLS

  Current release - new code bugs:

   - nf_tables: fix NULL check typo in _clone() functions

   - change the default to y for Vertexcom vendor Kconfig

   - a couple of fixes to incorrect uses of ref tracking

   - two fixes for constifying netdev->dev_addr

  Previous releases - regressions:

   - bpf:
      - various verifier fixes mainly around register offset handling
        when passed to helper functions
      - fix mount source displayed for bpffs (none -> bpffs)

   - bonding:
      - fix extraction of ports for connection hash calculation
      - fix bond_xmit_broadcast return value when some devices are down

   - phy: marvell: add Marvell specific PHY loopback

   - sch_api: don't skip qdisc attach on ingress, prevent ref leak

   - htb: restore minimal packet size handling in rate control

   - sfp: fix high power modules without diagnostic monitoring

   - mscc: ocelot:
      - don't let phylink re-enable TX PAUSE on the NPI port
      - don't dereference NULL pointers with shared tc filters

   - smsc95xx: correct reset handling for LAN9514

   - cpsw: avoid alignment faults by taking NET_IP_ALIGN into account

   - phy: micrel: use kszphy_suspend/_resume for irq aware devices,
     avoid races with the interrupt

  Previous releases - always broken:

   - xdp: check prog type before updating BPF link

   - smc: resolve various races around abnormal connection termination

   - sit: allow encapsulated IPv6 traffic to be delivered locally

   - axienet: fix init/reset handling, add missing barriers, read the
     right status words, stop queues correctly

   - add missing dev_put() in sock_timestamping_bind_phc()

  Misc:

   - ipv4: prevent accidentally passing RTO_ONLINK to
     ip_route_output_key_hash() by sanitizing flags

   - ipv4: avoid quadratic behavior in netns dismantle

   - stmmac: dwmac-oxnas: add support for OX810SE

   - fsl: xgmac_mdio: add workaround for erratum A-009885"

* tag 'net-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (92 commits)
  ipv4: add net_hash_mix() dispersion to fib_info_laddrhash keys
  ipv4: avoid quadratic behavior in netns dismantle
  net/fsl: xgmac_mdio: Fix incorrect iounmap when removing module
  powerpc/fsl/dts: Enable WA for erratum A-009885 on fman3l MDIO buses
  dt-bindings: net: Document fsl,erratum-a009885
  net/fsl: xgmac_mdio: Add workaround for erratum A-009885
  net: mscc: ocelot: fix using match before it is set
  net: phy: micrel: use kszphy_suspend()/kszphy_resume for irq aware devices
  net: cpsw: avoid alignment faults by taking NET_IP_ALIGN into account
  nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind()
  net: axienet: increase default TX ring size to 128
  net: axienet: fix for TX busy handling
  net: axienet: fix number of TX ring slots for available check
  net: axienet: Fix TX ring slot available check
  net: axienet: limit minimum TX ring size
  net: axienet: add missing memory barriers
  net: axienet: reset core on initialization prior to MDIO access
  net: axienet: Wait for PhyRstCmplt after core reset
  net: axienet: increase reset timeout
  bpf, selftests: Add ringbuf memory type confusion test
  ...

Documentation/devicetree/bindings/net/fsl-fman.txt

@@ -410,6 +410,15 @@ PROPERTIES
 		The settings and programming routines for internal/external
 		MDIO are different. Must be included for internal MDIO.
 
+- fsl,erratum-a009885
+		Usage: optional
+		Value type: <boolean>
+		Definition: Indicates the presence of the A009885
+		erratum describing that the contents of MDIO_DATA may
+		become corrupt unless it is read within 16 MDC cycles
+		of MDIO_CFG[BSY] being cleared, when performing an
+		MDIO read operation.
+
 - fsl,erratum-a011043
 		Usage: optional
 		Value type: <boolean>

Documentation/devicetree/bindings/net/oxnas-dwmac.txt

@@ -9,6 +9,9 @@ Required properties on all platforms:
 - compatible:	For the OX820 SoC, it should be :
 		- "oxsemi,ox820-dwmac" to select glue
 		- "snps,dwmac-3.512" to select IP version.
+		For the OX810SE SoC, it should be :
+		- "oxsemi,ox810se-dwmac" to select glue
+		- "snps,dwmac-3.512" to select IP version.
 
 - clocks: Should contain phandles to the following clocks
 - clock-names:	Should contain the following:

arch/powerpc/boot/dts/fsl/qoriq-fman3l-0.dtsi

@@ -79,6 +79,7 @@ fman0: fman@400000 {
 		#size-cells = <0>;
 		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
 		reg = <0xfc000 0x1000>;
+		fsl,erratum-a009885;
 	};
 
 	xmdio0: mdio@fd000 {
@@ -86,6 +87,7 @@ fman0: fman@400000 {
 		#size-cells = <0>;
 		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
 		reg = <0xfd000 0x1000>;
+		fsl,erratum-a009885;
 	};
 };
 

drivers/atm/iphase.c

@@ -178,7 +178,6 @@ static void ia_hack_tcq(IADEV *dev) {
 
 static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
   u_short 		desc_num, i;
-  struct sk_buff        *skb;
   struct ia_vcc         *iavcc_r = NULL; 
   unsigned long delta;
   static unsigned long timer = 0;
@@ -202,8 +201,7 @@ static u16 get_desc (IADEV *dev, struct ia_vcc *iavcc) {
            else 
               dev->ffL.tcq_rd -= 2;
            *(u_short *)(dev->seg_ram + dev->ffL.tcq_rd) = i+1;
-           if (!(skb = dev->desc_tbl[i].txskb) || 
+           if (!dev->desc_tbl[i].txskb || !(iavcc_r = dev->desc_tbl[i].iavcc))
-                          !(iavcc_r = dev->desc_tbl[i].iavcc))
               printk("Fatal err, desc table vcc or skb is NULL\n");
            else 
               iavcc_r->vc_desc_cnt--;

drivers/net/bonding/bond_main.c

@@ -3874,8 +3874,8 @@ u32 bond_xmit_hash(struct bonding *bond, struct sk_buff *skb)
 	    skb->l4_hash)
 		return skb->hash;
 
-	return __bond_xmit_hash(bond, skb, skb->head, skb->protocol,
+	return __bond_xmit_hash(bond, skb, skb->data, skb->protocol,
-				skb->mac_header, skb->network_header,
+				skb_mac_offset(skb), skb_network_offset(skb),
 				skb_headlen(skb));
 }
 
@@ -4884,25 +4884,39 @@ static netdev_tx_t bond_xmit_broadcast(struct sk_buff *skb,
 	struct bonding *bond = netdev_priv(bond_dev);
 	struct slave *slave = NULL;
 	struct list_head *iter;
+	bool xmit_suc = false;
+	bool skb_used = false;
 
 	bond_for_each_slave_rcu(bond, slave, iter) {
-		if (bond_is_last_slave(bond, slave))
+		struct sk_buff *skb2;
-			break;
-		if (bond_slave_is_up(slave) && slave->link == BOND_LINK_UP) {
-			struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
 
+		if (!(bond_slave_is_up(slave) && slave->link == BOND_LINK_UP))
+			continue;
+
+		if (bond_is_last_slave(bond, slave)) {
+			skb2 = skb;
+			skb_used = true;
+		} else {
+			skb2 = skb_clone(skb, GFP_ATOMIC);
 			if (!skb2) {
 				net_err_ratelimited("%s: Error: %s: skb_clone() failed\n",
 						    bond_dev->name, __func__);
 				continue;
 			}
-			bond_dev_queue_xmit(bond, skb2, slave->dev);
 		}
-	}
-	if (slave && bond_slave_is_up(slave) && slave->link == BOND_LINK_UP)
-		return bond_dev_queue_xmit(bond, skb, slave->dev);
 
-	return bond_tx_drop(bond_dev, skb);
+		if (bond_dev_queue_xmit(bond, skb2, slave->dev) == NETDEV_TX_OK)
+			xmit_suc = true;
+	}
+
+	if (!skb_used)
+		dev_kfree_skb_any(skb);
+
+	if (xmit_suc)
+		return NETDEV_TX_OK;
+
+	atomic_long_inc(&bond_dev->tx_dropped);
+	return NET_XMIT_DROP;
 }
 
 /*------------------------- Device initialization ---------------------------*/

drivers/net/ethernet/allwinner/sun4i-emac.c

@@ -106,9 +106,9 @@ static void emac_update_speed(struct net_device *dev)
 
 	/* set EMAC SPEED, depend on PHY  */
 	reg_val = readl(db->membase + EMAC_MAC_SUPP_REG);
-	reg_val &= ~(0x1 << 8);
+	reg_val &= ~EMAC_MAC_SUPP_100M;
 	if (db->speed == SPEED_100)
-		reg_val |= 1 << 8;
+		reg_val |= EMAC_MAC_SUPP_100M;
 	writel(reg_val, db->membase + EMAC_MAC_SUPP_REG);
 }
 
@@ -264,7 +264,7 @@ static void emac_dma_done_callback(void *arg)
 
 	/* re enable interrupt */
 	reg_val = readl(db->membase + EMAC_INT_CTL_REG);
-	reg_val |= (0x01 << 8);
+	reg_val |= EMAC_INT_CTL_RX_EN;
 	writel(reg_val, db->membase + EMAC_INT_CTL_REG);
 
 	db->emacrx_completed_flag = 1;
@@ -429,7 +429,7 @@ static unsigned int emac_powerup(struct net_device *ndev)
 	/* initial EMAC */
 	/* flush RX FIFO */
 	reg_val = readl(db->membase + EMAC_RX_CTL_REG);
-	reg_val |= 0x8;
+	reg_val |= EMAC_RX_CTL_FLUSH_FIFO;
 	writel(reg_val, db->membase + EMAC_RX_CTL_REG);
 	udelay(1);
 
@@ -441,8 +441,8 @@ static unsigned int emac_powerup(struct net_device *ndev)
 
 	/* set MII clock */
 	reg_val = readl(db->membase + EMAC_MAC_MCFG_REG);
-	reg_val &= (~(0xf << 2));
+	reg_val &= ~EMAC_MAC_MCFG_MII_CLKD_MASK;
-	reg_val |= (0xD << 2);
+	reg_val |= EMAC_MAC_MCFG_MII_CLKD_72;
 	writel(reg_val, db->membase + EMAC_MAC_MCFG_REG);
 
 	/* clear RX counter */
@@ -506,7 +506,7 @@ static void emac_init_device(struct net_device *dev)
 
 	/* enable RX/TX0/RX Hlevel interrup */
 	reg_val = readl(db->membase + EMAC_INT_CTL_REG);
-	reg_val |= (0xf << 0) | (0x01 << 8);
+	reg_val |= (EMAC_INT_CTL_TX_EN | EMAC_INT_CTL_TX_ABRT_EN | EMAC_INT_CTL_RX_EN);
 	writel(reg_val, db->membase + EMAC_INT_CTL_REG);
 
 	spin_unlock_irqrestore(&db->lock, flags);
@@ -637,7 +637,9 @@ static void emac_rx(struct net_device *dev)
 		if (!rxcount) {
 			db->emacrx_completed_flag = 1;
 			reg_val = readl(db->membase + EMAC_INT_CTL_REG);
-			reg_val |= (0xf << 0) | (0x01 << 8);
+			reg_val |= (EMAC_INT_CTL_TX_EN |
+					EMAC_INT_CTL_TX_ABRT_EN |
+					EMAC_INT_CTL_RX_EN);
 			writel(reg_val, db->membase + EMAC_INT_CTL_REG);
 
 			/* had one stuck? */
@@ -669,7 +671,9 @@ static void emac_rx(struct net_device *dev)
 			writel(reg_val | EMAC_CTL_RX_EN,
 			       db->membase + EMAC_CTL_REG);
 			reg_val = readl(db->membase + EMAC_INT_CTL_REG);
-			reg_val |= (0xf << 0) | (0x01 << 8);
+			reg_val |= (EMAC_INT_CTL_TX_EN |
+					EMAC_INT_CTL_TX_ABRT_EN |
+					EMAC_INT_CTL_RX_EN);
 			writel(reg_val, db->membase + EMAC_INT_CTL_REG);
 
 			db->emacrx_completed_flag = 1;
@@ -783,20 +787,20 @@ static irqreturn_t emac_interrupt(int irq, void *dev_id)
 	}
 
 	/* Transmit Interrupt check */
-	if (int_status & (0x01 | 0x02))
+	if (int_status & EMAC_INT_STA_TX_COMPLETE)
 		emac_tx_done(dev, db, int_status);
 
-	if (int_status & (0x04 | 0x08))
+	if (int_status & EMAC_INT_STA_TX_ABRT)
 		netdev_info(dev, " ab : %x\n", int_status);
 
 	/* Re-enable interrupt mask */
 	if (db->emacrx_completed_flag == 1) {
 		reg_val = readl(db->membase + EMAC_INT_CTL_REG);
-		reg_val |= (0xf << 0) | (0x01 << 8);
+		reg_val |= (EMAC_INT_CTL_TX_EN | EMAC_INT_CTL_TX_ABRT_EN | EMAC_INT_CTL_RX_EN);
 		writel(reg_val, db->membase + EMAC_INT_CTL_REG);
 	} else {
 		reg_val = readl(db->membase + EMAC_INT_CTL_REG);
-		reg_val |= (0xf << 0);
+		reg_val |= (EMAC_INT_CTL_TX_EN | EMAC_INT_CTL_TX_ABRT_EN);
 		writel(reg_val, db->membase + EMAC_INT_CTL_REG);
 	}
 
@@ -1068,6 +1072,7 @@ out_clk_disable_unprepare:
 	clk_disable_unprepare(db->clk);
 out_dispose_mapping:
 	irq_dispose_mapping(ndev->irq);
+	dma_release_channel(db->rx_chan);
 out_iounmap:
 	iounmap(db->membase);
 out:

drivers/net/ethernet/allwinner/sun4i-emac.h

@@ -38,6 +38,7 @@
 #define EMAC_RX_CTL_REG		(0x3c)
 #define EMAC_RX_CTL_AUTO_DRQ_EN		(1 << 1)
 #define EMAC_RX_CTL_DMA_EN		(1 << 2)
+#define EMAC_RX_CTL_FLUSH_FIFO		(1 << 3)
 #define EMAC_RX_CTL_PASS_ALL_EN		(1 << 4)
 #define EMAC_RX_CTL_PASS_CTL_EN		(1 << 5)
 #define EMAC_RX_CTL_PASS_CRC_ERR_EN	(1 << 6)
@@ -61,7 +62,21 @@
 #define EMAC_RX_IO_DATA_STATUS_OK	(1 << 7)
 #define EMAC_RX_FBC_REG		(0x50)
 #define EMAC_INT_CTL_REG	(0x54)
+#define EMAC_INT_CTL_RX_EN	(1 << 8)
+#define EMAC_INT_CTL_TX0_EN	(1)
+#define EMAC_INT_CTL_TX1_EN	(1 << 1)
+#define EMAC_INT_CTL_TX_EN	(EMAC_INT_CTL_TX0_EN | EMAC_INT_CTL_TX1_EN)
+#define EMAC_INT_CTL_TX0_ABRT_EN	(0x1 << 2)
+#define EMAC_INT_CTL_TX1_ABRT_EN	(0x1 << 3)
+#define EMAC_INT_CTL_TX_ABRT_EN	(EMAC_INT_CTL_TX0_ABRT_EN | EMAC_INT_CTL_TX1_ABRT_EN)
 #define EMAC_INT_STA_REG	(0x58)
+#define EMAC_INT_STA_TX0_COMPLETE	(0x1)
+#define EMAC_INT_STA_TX1_COMPLETE	(0x1 << 1)
+#define EMAC_INT_STA_TX_COMPLETE	(EMAC_INT_STA_TX0_COMPLETE | EMAC_INT_STA_TX1_COMPLETE)
+#define EMAC_INT_STA_TX0_ABRT	(0x1 << 2)
+#define EMAC_INT_STA_TX1_ABRT	(0x1 << 3)
+#define EMAC_INT_STA_TX_ABRT	(EMAC_INT_STA_TX0_ABRT | EMAC_INT_STA_TX1_ABRT)
+#define EMAC_INT_STA_RX_COMPLETE	(0x1 << 8)
 #define EMAC_MAC_CTL0_REG	(0x5c)
 #define EMAC_MAC_CTL0_RX_FLOW_CTL_EN	(1 << 2)
 #define EMAC_MAC_CTL0_TX_FLOW_CTL_EN	(1 << 3)
@@ -87,8 +102,11 @@
 #define EMAC_MAC_CLRT_RM		(0x0f)
 #define EMAC_MAC_MAXF_REG	(0x70)
 #define EMAC_MAC_SUPP_REG	(0x74)
+#define EMAC_MAC_SUPP_100M	(0x1 << 8)
 #define EMAC_MAC_TEST_REG	(0x78)
 #define EMAC_MAC_MCFG_REG	(0x7c)
+#define EMAC_MAC_MCFG_MII_CLKD_MASK	(0xff << 2)
+#define EMAC_MAC_MCFG_MII_CLKD_72	(0x0d << 2)
 #define EMAC_MAC_A0_REG		(0x98)
 #define EMAC_MAC_A1_REG		(0x9c)
 #define EMAC_MAC_A2_REG		(0xa0)

drivers/net/ethernet/apple/bmac.c

@@ -1237,6 +1237,7 @@ static int bmac_probe(struct macio_dev *mdev, const struct of_device_id *match)
 	struct bmac_data *bp;
 	const unsigned char *prop_addr;
 	unsigned char addr[6];
+	u8 macaddr[6];
 	struct net_device *dev;
 	int is_bmac_plus = ((int)match->data) != 0;
 
@@ -1284,7 +1285,9 @@ static int bmac_probe(struct macio_dev *mdev, const struct of_device_id *match)
 
 	rev = addr[0] == 0 && addr[1] == 0xA0;
 	for (j = 0; j < 6; ++j)
-		dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
+		macaddr[j] = rev ? bitrev8(addr[j]): addr[j];
+
+	eth_hw_addr_set(dev, macaddr);
 
 	/* Enable chip without interrupts for now */
 	bmac_enable_and_reset_chip(dev);

drivers/net/ethernet/apple/mace.c

@@ -90,7 +90,7 @@ static void mace_set_timeout(struct net_device *dev);
 static void mace_tx_timeout(struct timer_list *t);
 static inline void dbdma_reset(volatile struct dbdma_regs __iomem *dma);
 static inline void mace_clean_rings(struct mace_data *mp);
-static void __mace_set_address(struct net_device *dev, void *addr);
+static void __mace_set_address(struct net_device *dev, const void *addr);
 
 /*
  * If we can't get a skbuff when we need it, we use this area for DMA.
@@ -112,6 +112,7 @@ static int mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
 	struct net_device *dev;
 	struct mace_data *mp;
 	const unsigned char *addr;
+	u8 macaddr[ETH_ALEN];
 	int j, rev, rc = -EBUSY;
 
 	if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) {
@@ -167,8 +168,9 @@ static int mace_probe(struct macio_dev *mdev, const struct of_device_id *match)
 
 	rev = addr[0] == 0 && addr[1] == 0xA0;
 	for (j = 0; j < 6; ++j) {
-		dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j];
+		macaddr[j] = rev ? bitrev8(addr[j]): addr[j];
 	}
+	eth_hw_addr_set(dev, macaddr);
 	mp->chipid = (in_8(&mp->mace->chipid_hi) << 8) |
 			in_8(&mp->mace->chipid_lo);
 
@@ -369,11 +371,12 @@ static void mace_reset(struct net_device *dev)
 	out_8(&mb->plscc, PORTSEL_GPSI + ENPLSIO);
 }
 
-static void __mace_set_address(struct net_device *dev, void *addr)
+static void __mace_set_address(struct net_device *dev, const void *addr)
 {
     struct mace_data *mp = netdev_priv(dev);
     volatile struct mace __iomem *mb = mp->mace;
-    unsigned char *p = addr;
+    const unsigned char *p = addr;
+    u8 macaddr[ETH_ALEN];
     int i;
 
     /* load up the hardware address */
@@ -385,7 +388,10 @@ static void __mace_set_address(struct net_device *dev, void *addr)
 	    ;
     }
     for (i = 0; i < 6; ++i)
-	out_8(&mb->padr, dev->dev_addr[i] = p[i]);
+        out_8(&mb->padr, macaddr[i] = p[i]);
+
+    eth_hw_addr_set(dev, macaddr);
+
     if (mp->chipid != BROKEN_ADDRCHG_REV)
         out_8(&mb->iac, 0);
 }

drivers/net/ethernet/broadcom/genet/bcmgenet.c

@@ -4020,10 +4020,12 @@ static int bcmgenet_probe(struct platform_device *pdev)
 
 	/* Request the WOL interrupt and advertise suspend if available */
 	priv->wol_irq_disabled = true;
-	err = devm_request_irq(&pdev->dev, priv->wol_irq, bcmgenet_wol_isr, 0,
+	if (priv->wol_irq > 0) {
-			       dev->name, priv);
+		err = devm_request_irq(&pdev->dev, priv->wol_irq,
-	if (!err)
+				       bcmgenet_wol_isr, 0, dev->name, priv);
-		device_set_wakeup_capable(&pdev->dev, 1);
+		if (!err)
+			device_set_wakeup_capable(&pdev->dev, 1);
+	}
 
 	/* Set the needed headroom to account for any possible
 	 * features enabling/disabling at runtime

drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c

@@ -32,6 +32,7 @@
 
 #include <linux/tcp.h>
 #include <linux/ipv6.h>
+#include <net/inet_ecn.h>
 #include <net/route.h>
 #include <net/ip6_route.h>
 
@@ -99,7 +100,7 @@ cxgb_find_route(struct cxgb4_lld_info *lldi,
 
 	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
 				   peer_port, local_port, IPPROTO_TCP,
-				   tos, 0);
+				   tos & ~INET_ECN_MASK, 0);
 	if (IS_ERR(rt))
 		return NULL;
 	n = dst_neigh_lookup(&rt->dst, &peer_ip);

drivers/net/ethernet/freescale/xgmac_mdio.c

@@ -51,6 +51,7 @@ struct tgec_mdio_controller {
 struct mdio_fsl_priv {
 	struct	tgec_mdio_controller __iomem *mdio_base;
 	bool	is_little_endian;
+	bool	has_a009885;
 	bool	has_a011043;
 };
 
@@ -186,10 +187,10 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 {
 	struct mdio_fsl_priv *priv = (struct mdio_fsl_priv *)bus->priv;
 	struct tgec_mdio_controller __iomem *regs = priv->mdio_base;
+	unsigned long flags;
 	uint16_t dev_addr;
 	uint32_t mdio_stat;
 	uint32_t mdio_ctl;
-	uint16_t value;
 	int ret;
 	bool endian = priv->is_little_endian;
 
@@ -221,12 +222,18 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 			return ret;
 	}
 
+	if (priv->has_a009885)
+		/* Once the operation completes, i.e. MDIO_STAT_BSY clears, we
+		 * must read back the data register within 16 MDC cycles.
+		 */
+		local_irq_save(flags);
+
 	/* Initiate the read */
 	xgmac_write32(mdio_ctl | MDIO_CTL_READ, &regs->mdio_ctl, endian);
 
 	ret = xgmac_wait_until_done(&bus->dev, regs, endian);
 	if (ret)
-		return ret;
+		goto irq_restore;
 
 	/* Return all Fs if nothing was there */
 	if ((xgmac_read32(&regs->mdio_stat, endian) & MDIO_STAT_RD_ER) &&
@@ -234,13 +241,17 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 		dev_dbg(&bus->dev,
 			"Error while reading PHY%d reg at %d.%hhu\n",
 			phy_id, dev_addr, regnum);
-		return 0xffff;
+		ret = 0xffff;
+	} else {
+		ret = xgmac_read32(&regs->mdio_data, endian) & 0xffff;
+		dev_dbg(&bus->dev, "read %04x\n", ret);
 	}
 
-	value = xgmac_read32(&regs->mdio_data, endian) & 0xffff;
+irq_restore:
-	dev_dbg(&bus->dev, "read %04x\n", value);
+	if (priv->has_a009885)
+		local_irq_restore(flags);
 
-	return value;
+	return ret;
 }
 
 static int xgmac_mdio_probe(struct platform_device *pdev)
@@ -287,6 +298,8 @@ static int xgmac_mdio_probe(struct platform_device *pdev)
 	priv->is_little_endian = device_property_read_bool(&pdev->dev,
 							   "little-endian");
 
+	priv->has_a009885 = device_property_read_bool(&pdev->dev,
+						      "fsl,erratum-a009885");
 	priv->has_a011043 = device_property_read_bool(&pdev->dev,
 						      "fsl,erratum-a011043");
 
@@ -318,9 +331,10 @@ err_ioremap:
 static int xgmac_mdio_remove(struct platform_device *pdev)
 {
 	struct mii_bus *bus = platform_get_drvdata(pdev);
+	struct mdio_fsl_priv *priv = bus->priv;
 
 	mdiobus_unregister(bus);
-	iounmap(bus->priv);
+	iounmap(priv->mdio_base);
 	mdiobus_free(bus);
 
 	return 0;

drivers/net/ethernet/i825xx/sni_82596.c

@@ -117,9 +117,10 @@ static int sni_82596_probe(struct platform_device *dev)
 	netdevice->dev_addr[5] = readb(eth_addr + 0x06);
 	iounmap(eth_addr);
 
-	if (!netdevice->irq) {
+	if (netdevice->irq < 0) {
 		printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n",
 			__FILE__, netdevice->base_addr);
+		retval = netdevice->irq;
 		goto probe_failed;
 	}
 

drivers/net/ethernet/marvell/prestera/prestera.h

@@ -283,7 +283,6 @@ struct prestera_router {
 	struct list_head rif_entry_list;
 	struct notifier_block inetaddr_nb;
 	struct notifier_block inetaddr_valid_nb;
-	bool aborted;
 };
 
 struct prestera_rxtx_params {

drivers/net/ethernet/marvell/prestera/prestera_hw.c

@@ -1831,8 +1831,8 @@ static int prestera_iface_to_msg(struct prestera_iface *iface,
 int prestera_hw_rif_create(struct prestera_switch *sw,
 			   struct prestera_iface *iif, u8 *mac, u16 *rif_id)
 {
-	struct prestera_msg_rif_req req;
 	struct prestera_msg_rif_resp resp;
+	struct prestera_msg_rif_req req;
 	int err;
 
 	memcpy(req.mac, mac, ETH_ALEN);
@@ -1868,9 +1868,9 @@ int prestera_hw_rif_delete(struct prestera_switch *sw, u16 rif_id,
 
 int prestera_hw_vr_create(struct prestera_switch *sw, u16 *vr_id)
 {
-	int err;
 	struct prestera_msg_vr_resp resp;
 	struct prestera_msg_vr_req req;
+	int err;
 
 	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_ROUTER_VR_CREATE,
 			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));

drivers/net/ethernet/marvell/prestera/prestera_main.c

@@ -982,6 +982,7 @@ static void prestera_switch_fini(struct prestera_switch *sw)
 	prestera_event_handlers_unregister(sw);
 	prestera_rxtx_switch_fini(sw);
 	prestera_switchdev_fini(sw);
+	prestera_router_fini(sw);
 	prestera_netdev_event_handler_unregister(sw);
 	prestera_hw_switch_fini(sw);
 }

drivers/net/ethernet/marvell/prestera/prestera_router.c

@@ -25,10 +25,10 @@ static int __prestera_inetaddr_port_event(struct net_device *port_dev,
 					  struct netlink_ext_ack *extack)
 {
 	struct prestera_port *port = netdev_priv(port_dev);
-	int err;
-	struct prestera_rif_entry *re;
 	struct prestera_rif_entry_key re_key = {};
+	struct prestera_rif_entry *re;
 	u32 kern_tb_id;
+	int err;
 
 	err = prestera_is_valid_mac_addr(port, port_dev->dev_addr);
 	if (err) {
@@ -45,21 +45,21 @@ static int __prestera_inetaddr_port_event(struct net_device *port_dev,
 	switch (event) {
 	case NETDEV_UP:
 		if (re) {
-			NL_SET_ERR_MSG_MOD(extack, "rif_entry already exist");
+			NL_SET_ERR_MSG_MOD(extack, "RIF already exist");
 			return -EEXIST;
 		}
 		re = prestera_rif_entry_create(port->sw, &re_key,
 					       prestera_fix_tb_id(kern_tb_id),
 					       port_dev->dev_addr);
 		if (!re) {
-			NL_SET_ERR_MSG_MOD(extack, "Can't create rif_entry");
+			NL_SET_ERR_MSG_MOD(extack, "Can't create RIF");
 			return -EINVAL;
 		}
 		dev_hold(port_dev);
 		break;
 	case NETDEV_DOWN:
 		if (!re) {
-			NL_SET_ERR_MSG_MOD(extack, "rif_entry not exist");
+			NL_SET_ERR_MSG_MOD(extack, "Can't find RIF");
 			return -EEXIST;
 		}
 		prestera_rif_entry_destroy(port->sw, re);
@@ -75,11 +75,11 @@ static int __prestera_inetaddr_event(struct prestera_switch *sw,
 				     unsigned long event,
 				     struct netlink_ext_ack *extack)
 {
-	if (prestera_netdev_check(dev) && !netif_is_bridge_port(dev) &&
+	if (!prestera_netdev_check(dev) || netif_is_bridge_port(dev) ||
-	    !netif_is_lag_port(dev) && !netif_is_ovs_port(dev))
+	    netif_is_lag_port(dev) || netif_is_ovs_port(dev))
-		return __prestera_inetaddr_port_event(dev, event, extack);
+		return 0;
 
-	return 0;
+	return __prestera_inetaddr_port_event(dev, event, extack);
 }
 
 static int __prestera_inetaddr_cb(struct notifier_block *nb,
@@ -126,6 +126,8 @@ static int __prestera_inetaddr_valid_cb(struct notifier_block *nb,
 		goto out;
 
 	if (ipv4_is_multicast(ivi->ivi_addr)) {
+		NL_SET_ERR_MSG_MOD(ivi->extack,
+				   "Multicast addr on RIF is not supported");
 		err = -EINVAL;
 		goto out;
 	}
@@ -166,7 +168,7 @@ int prestera_router_init(struct prestera_switch *sw)
 err_register_inetaddr_notifier:
 	unregister_inetaddr_validator_notifier(&router->inetaddr_valid_nb);
 err_register_inetaddr_validator_notifier:
-	/* prestera_router_hw_fini */
+	prestera_router_hw_fini(sw);
 err_router_lib_init:
 	kfree(sw->router);
 	return err;
@@ -176,7 +178,7 @@ void prestera_router_fini(struct prestera_switch *sw)
 {
 	unregister_inetaddr_notifier(&sw->router->inetaddr_nb);
 	unregister_inetaddr_validator_notifier(&sw->router->inetaddr_valid_nb);
-	/* router_hw_fini */
+	prestera_router_hw_fini(sw);
 	kfree(sw->router);
 	sw->router = NULL;
 }

drivers/net/ethernet/marvell/prestera/prestera_router_hw.c

@@ -29,6 +29,12 @@ int prestera_router_hw_init(struct prestera_switch *sw)
 	return 0;
 }
 
+void prestera_router_hw_fini(struct prestera_switch *sw)
+{
+	WARN_ON(!list_empty(&sw->router->vr_list));
+	WARN_ON(!list_empty(&sw->router->rif_entry_list));
+}
+
 static struct prestera_vr *__prestera_vr_find(struct prestera_switch *sw,
 					      u32 tb_id)
 {
@@ -47,13 +53,8 @@ static struct prestera_vr *__prestera_vr_create(struct prestera_switch *sw,
 						struct netlink_ext_ack *extack)
 {
 	struct prestera_vr *vr;
-	u16 hw_vr_id;
 	int err;
 
-	err = prestera_hw_vr_create(sw, &hw_vr_id);
-	if (err)
-		return ERR_PTR(-ENOMEM);
-
 	vr = kzalloc(sizeof(*vr), GFP_KERNEL);
 	if (!vr) {
 		err = -ENOMEM;
@@ -61,23 +62,26 @@ static struct prestera_vr *__prestera_vr_create(struct prestera_switch *sw,
 	}
 
 	vr->tb_id = tb_id;
-	vr->hw_vr_id = hw_vr_id;
+
+	err = prestera_hw_vr_create(sw, &vr->hw_vr_id);
+	if (err)
+		goto err_hw_create;
 
 	list_add(&vr->router_node, &sw->router->vr_list);
 
 	return vr;
 
-err_alloc_vr:
+err_hw_create:
-	prestera_hw_vr_delete(sw, hw_vr_id);
 	kfree(vr);
+err_alloc_vr:
 	return ERR_PTR(err);
 }
 
 static void __prestera_vr_destroy(struct prestera_switch *sw,
 				  struct prestera_vr *vr)
 {
-	prestera_hw_vr_delete(sw, vr->hw_vr_id);
 	list_del(&vr->router_node);
+	prestera_hw_vr_delete(sw, vr->hw_vr_id);
 	kfree(vr);
 }
 
@@ -87,17 +91,22 @@ static struct prestera_vr *prestera_vr_get(struct prestera_switch *sw, u32 tb_id
 	struct prestera_vr *vr;
 
 	vr = __prestera_vr_find(sw, tb_id);
-	if (!vr)
+	if (vr) {
+		refcount_inc(&vr->refcount);
+	} else {
 		vr = __prestera_vr_create(sw, tb_id, extack);
-	if (IS_ERR(vr))
+		if (IS_ERR(vr))
-		return ERR_CAST(vr);
+			return ERR_CAST(vr);
+
+		refcount_set(&vr->refcount, 1);
+	}
 
 	return vr;
 }
 
 static void prestera_vr_put(struct prestera_switch *sw, struct prestera_vr *vr)
 {
-	if (!vr->ref_cnt)
+	if (refcount_dec_and_test(&vr->refcount))
 		__prestera_vr_destroy(sw, vr);
 }
 
@@ -120,7 +129,7 @@ __prestera_rif_entry_key_copy(const struct prestera_rif_entry_key *in,
 		out->iface.vlan_id = in->iface.vlan_id;
 		break;
 	default:
-		pr_err("Unsupported iface type");
+		WARN(1, "Unsupported iface type");
 		return -EINVAL;
 	}
 
@@ -158,7 +167,6 @@ void prestera_rif_entry_destroy(struct prestera_switch *sw,
 	iface.vr_id = e->vr->hw_vr_id;
 	prestera_hw_rif_delete(sw, e->hw_id, &iface);
 
-	e->vr->ref_cnt--;
 	prestera_vr_put(sw, e->vr);
 	kfree(e);
 }
@@ -183,7 +191,6 @@ prestera_rif_entry_create(struct prestera_switch *sw,
 	if (IS_ERR(e->vr))
 		goto err_vr_get;
 
-	e->vr->ref_cnt++;
 	memcpy(&e->addr, addr, sizeof(e->addr));
 
 	/* HW */
@@ -198,7 +205,6 @@ prestera_rif_entry_create(struct prestera_switch *sw,
 	return e;
 
 err_hw_create:
-	e->vr->ref_cnt--;
 	prestera_vr_put(sw, e->vr);
 err_vr_get:
 err_key_copy:

drivers/net/ethernet/marvell/prestera/prestera_router_hw.h

@@ -6,7 +6,7 @@
 
 struct prestera_vr {
 	struct list_head router_node;
-	unsigned int ref_cnt;
+	refcount_t refcount;
 	u32 tb_id;			/* key (kernel fib table id) */
 	u16 hw_vr_id;			/* virtual router ID */
 	u8 __pad[2];
@@ -32,5 +32,6 @@ prestera_rif_entry_create(struct prestera_switch *sw,
 			  struct prestera_rif_entry_key *k,
 			  u32 tb_id, const unsigned char *addr);
 int prestera_router_hw_init(struct prestera_switch *sw);
+void prestera_router_hw_fini(struct prestera_switch *sw);
 
 #endif /* _PRESTERA_ROUTER_HW_H_ */

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -267,7 +267,7 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode,
 					   phylink_config);
 	struct mtk_eth *eth = mac->hw;
 	u32 mcr_cur, mcr_new, sid, i;
-	int val, ge_mode, err;
+	int val, ge_mode, err = 0;
 
 	/* MT76x8 has no hardware settings between for the MAC */
 	if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) &&

drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c

@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
 /* Copyright (c) 2018 Mellanox Technologies. */
 
+#include <net/inet_ecn.h>
 #include <net/vxlan.h>
 #include <net/gre.h>
 #include <net/geneve.h>
@@ -235,7 +236,7 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv,
 	int err;
 
 	/* add the IP fields */
-	attr.fl.fl4.flowi4_tos = tun_key->tos;
+	attr.fl.fl4.flowi4_tos = tun_key->tos & ~INET_ECN_MASK;
 	attr.fl.fl4.daddr = tun_key->u.ipv4.dst;
 	attr.fl.fl4.saddr = tun_key->u.ipv4.src;
 	attr.ttl = tun_key->ttl;
@@ -350,7 +351,7 @@ int mlx5e_tc_tun_update_header_ipv4(struct mlx5e_priv *priv,
 	int err;
 
 	/* add the IP fields */
-	attr.fl.fl4.flowi4_tos = tun_key->tos;
+	attr.fl.fl4.flowi4_tos = tun_key->tos & ~INET_ECN_MASK;
 	attr.fl.fl4.daddr = tun_key->u.ipv4.dst;
 	attr.fl.fl4.saddr = tun_key->u.ipv4.src;
 	attr.ttl = tun_key->ttl;

drivers/net/ethernet/mscc/ocelot.c

@@ -771,7 +771,10 @@ void ocelot_phylink_mac_link_up(struct ocelot *ocelot, int port,
 
 	ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
 
-	ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, tx_pause);
+	/* Don't attempt to send PAUSE frames on the NPI port, it's broken */
+	if (port != ocelot->npi)
+		ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA,
+				    tx_pause);
 
 	/* Undo the effects of ocelot_phylink_mac_link_down:
 	 * enable MAC module

drivers/net/ethernet/mscc/ocelot_flower.c

@@ -559,13 +559,6 @@ ocelot_flower_parse_key(struct ocelot *ocelot, int port, bool ingress,
 			return -EOPNOTSUPP;
 		}
 
-		if (filter->block_id == VCAP_IS1 &&
-		    !is_zero_ether_addr(match.mask->dst)) {
-			NL_SET_ERR_MSG_MOD(extack,
-					   "Key type S1_NORMAL cannot match on destination MAC");
-			return -EOPNOTSUPP;
-		}
-
 		/* The hw support mac matches only for MAC_ETYPE key,
 		 * therefore if other matches(port, tcp flags, etc) are added
 		 * then just bail out
@@ -580,6 +573,14 @@ ocelot_flower_parse_key(struct ocelot *ocelot, int port, bool ingress,
 			return -EOPNOTSUPP;
 
 		flow_rule_match_eth_addrs(rule, &match);
+
+		if (filter->block_id == VCAP_IS1 &&
+		    !is_zero_ether_addr(match.mask->dst)) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Key type S1_NORMAL cannot match on destination MAC");
+			return -EOPNOTSUPP;
+		}
+
 		filter->key_type = OCELOT_VCAP_KEY_ETYPE;
 		ether_addr_copy(filter->key.etype.dmac.value,
 				match.key->dst);
@@ -805,13 +806,34 @@ int ocelot_cls_flower_replace(struct ocelot *ocelot, int port,
 	struct netlink_ext_ack *extack = f->common.extack;
 	struct ocelot_vcap_filter *filter;
 	int chain = f->common.chain_index;
-	int ret;
+	int block_id, ret;
 
 	if (chain && !ocelot_find_vcap_filter_that_points_at(ocelot, chain)) {
 		NL_SET_ERR_MSG_MOD(extack, "No default GOTO action points to this chain");
 		return -EOPNOTSUPP;
 	}
 
+	block_id = ocelot_chain_to_block(chain, ingress);
+	if (block_id < 0) {
+		NL_SET_ERR_MSG_MOD(extack, "Cannot offload to this chain");
+		return -EOPNOTSUPP;
+	}
+
+	filter = ocelot_vcap_block_find_filter_by_id(&ocelot->block[block_id],
+						     f->cookie, true);
+	if (filter) {
+		/* Filter already exists on other ports */
+		if (!ingress) {
+			NL_SET_ERR_MSG_MOD(extack, "VCAP ES0 does not support shared filters");
+			return -EOPNOTSUPP;
+		}
+
+		filter->ingress_port_mask |= BIT(port);
+
+		return ocelot_vcap_filter_replace(ocelot, filter);
+	}
+
+	/* Filter didn't exist, create it now */
 	filter = ocelot_vcap_filter_create(ocelot, port, ingress, f);
 	if (!filter)
 		return -ENOMEM;
@@ -874,6 +896,12 @@ int ocelot_cls_flower_destroy(struct ocelot *ocelot, int port,
 	if (filter->type == OCELOT_VCAP_FILTER_DUMMY)
 		return ocelot_vcap_dummy_filter_del(ocelot, filter);
 
+	if (ingress) {
+		filter->ingress_port_mask &= ~BIT(port);
+		if (filter->ingress_port_mask)
+			return ocelot_vcap_filter_replace(ocelot, filter);
+	}
+
 	return ocelot_vcap_filter_del(ocelot, filter);
 }
 EXPORT_SYMBOL_GPL(ocelot_cls_flower_destroy);

drivers/net/ethernet/mscc/ocelot_net.c

@@ -1187,7 +1187,7 @@ static int ocelot_netdevice_bridge_join(struct net_device *dev,
 	ocelot_port_bridge_join(ocelot, port, bridge);
 
 	err = switchdev_bridge_port_offload(brport_dev, dev, priv,
-					    &ocelot_netdevice_nb,
+					    &ocelot_switchdev_nb,
 					    &ocelot_switchdev_blocking_nb,
 					    false, extack);
 	if (err)
@@ -1201,7 +1201,7 @@ static int ocelot_netdevice_bridge_join(struct net_device *dev,
 
 err_switchdev_sync:
 	switchdev_bridge_port_unoffload(brport_dev, priv,
-					&ocelot_netdevice_nb,
+					&ocelot_switchdev_nb,
 					&ocelot_switchdev_blocking_nb);
 err_switchdev_offload:
 	ocelot_port_bridge_leave(ocelot, port, bridge);
@@ -1214,7 +1214,7 @@ static void ocelot_netdevice_pre_bridge_leave(struct net_device *dev,
 	struct ocelot_port_private *priv = netdev_priv(dev);
 
 	switchdev_bridge_port_unoffload(brport_dev, priv,
-					&ocelot_netdevice_nb,
+					&ocelot_switchdev_nb,
 					&ocelot_switchdev_blocking_nb);
 }
 

drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c

@@ -12,6 +12,7 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/mfd/syscon.h>
@@ -48,16 +49,75 @@
 #define DWMAC_RX_VARDELAY(d)		((d) << DWMAC_RX_VARDELAY_SHIFT)
 #define DWMAC_RXN_VARDELAY(d)		((d) << DWMAC_RXN_VARDELAY_SHIFT)
 
+struct oxnas_dwmac;
+
+struct oxnas_dwmac_data {
+	int (*setup)(struct oxnas_dwmac *dwmac);
+};
+
 struct oxnas_dwmac {
 	struct device	*dev;
 	struct clk	*clk;
 	struct regmap	*regmap;
+	const struct oxnas_dwmac_data	*data;
 };
 
+static int oxnas_dwmac_setup_ox810se(struct oxnas_dwmac *dwmac)
+{
+	unsigned int value;
+	int ret;
+
+	ret = regmap_read(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, &value);
+	if (ret < 0)
+		return ret;
+
+	/* Enable GMII_GTXCLK to follow GMII_REFCLK, required for gigabit PHY */
+	value |= BIT(DWMAC_CKEN_GTX)		|
+		 /* Use simple mux for 25/125 Mhz clock switching */
+		 BIT(DWMAC_SIMPLE_MUX);
+
+	regmap_write(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, value);
+
+	return 0;
+}
+
+static int oxnas_dwmac_setup_ox820(struct oxnas_dwmac *dwmac)
+{
+	unsigned int value;
+	int ret;
+
+	ret = regmap_read(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, &value);
+	if (ret < 0)
+		return ret;
+
+	/* Enable GMII_GTXCLK to follow GMII_REFCLK, required for gigabit PHY */
+	value |= BIT(DWMAC_CKEN_GTX)		|
+		 /* Use simple mux for 25/125 Mhz clock switching */
+		BIT(DWMAC_SIMPLE_MUX)		|
+		/* set auto switch tx clock source */
+		BIT(DWMAC_AUTO_TX_SOURCE)	|
+		/* enable tx & rx vardelay */
+		BIT(DWMAC_CKEN_TX_OUT)		|
+		BIT(DWMAC_CKEN_TXN_OUT)	|
+		BIT(DWMAC_CKEN_TX_IN)		|
+		BIT(DWMAC_CKEN_RX_OUT)		|
+		BIT(DWMAC_CKEN_RXN_OUT)	|
+		BIT(DWMAC_CKEN_RX_IN);
+	regmap_write(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, value);
+
+	/* set tx & rx vardelay */
+	value = DWMAC_TX_VARDELAY(4)	|
+		DWMAC_TXN_VARDELAY(2)	|
+		DWMAC_RX_VARDELAY(10)	|
+		DWMAC_RXN_VARDELAY(8);
+	regmap_write(dwmac->regmap, OXNAS_DWMAC_DELAY_REGOFFSET, value);
+
+	return 0;
+}
+
 static int oxnas_dwmac_init(struct platform_device *pdev, void *priv)
 {
 	struct oxnas_dwmac *dwmac = priv;
-	unsigned int value;
 	int ret;
 
 	/* Reset HW here before changing the glue configuration */
@@ -69,35 +129,11 @@ static int oxnas_dwmac_init(struct platform_device *pdev, void *priv)
 	if (ret)
 		return ret;
 
-	ret = regmap_read(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, &value);
+	ret = dwmac->data->setup(dwmac);
-	if (ret < 0) {
+	if (ret)
 		clk_disable_unprepare(dwmac->clk);
-		return ret;
-	}
 
-	/* Enable GMII_GTXCLK to follow GMII_REFCLK, required for gigabit PHY */
+	return ret;
-	value |= BIT(DWMAC_CKEN_GTX)		|
-		 /* Use simple mux for 25/125 Mhz clock switching */
-		 BIT(DWMAC_SIMPLE_MUX)		|
-		 /* set auto switch tx clock source */
-		 BIT(DWMAC_AUTO_TX_SOURCE)	|
-		 /* enable tx & rx vardelay */
-		 BIT(DWMAC_CKEN_TX_OUT)		|
-		 BIT(DWMAC_CKEN_TXN_OUT)	|
-		 BIT(DWMAC_CKEN_TX_IN)		|
-		 BIT(DWMAC_CKEN_RX_OUT)		|
-		 BIT(DWMAC_CKEN_RXN_OUT)	|
-		 BIT(DWMAC_CKEN_RX_IN);
-	regmap_write(dwmac->regmap, OXNAS_DWMAC_CTRL_REGOFFSET, value);
-
-	/* set tx & rx vardelay */
-	value = DWMAC_TX_VARDELAY(4)	|
-		DWMAC_TXN_VARDELAY(2)	|
-		DWMAC_RX_VARDELAY(10)	|
-		DWMAC_RXN_VARDELAY(8);
-	regmap_write(dwmac->regmap, OXNAS_DWMAC_DELAY_REGOFFSET, value);
-
-	return 0;
 }
 
 static void oxnas_dwmac_exit(struct platform_device *pdev, void *priv)
@@ -128,6 +164,12 @@ static int oxnas_dwmac_probe(struct platform_device *pdev)
 		goto err_remove_config_dt;
 	}
 
+	dwmac->data = (const struct oxnas_dwmac_data *)of_device_get_match_data(&pdev->dev);
+	if (!dwmac->data) {
+		ret = -EINVAL;
+		goto err_remove_config_dt;
+	}
+
 	dwmac->dev = &pdev->dev;
 	plat_dat->bsp_priv = dwmac;
 	plat_dat->init = oxnas_dwmac_init;
@@ -166,8 +208,23 @@ err_remove_config_dt:
 	return ret;
 }
 
+static const struct oxnas_dwmac_data ox810se_dwmac_data = {
+	.setup = oxnas_dwmac_setup_ox810se,
+};
+
+static const struct oxnas_dwmac_data ox820_dwmac_data = {
+	.setup = oxnas_dwmac_setup_ox820,
+};
+
 static const struct of_device_id oxnas_dwmac_match[] = {
-	{ .compatible = "oxsemi,ox820-dwmac" },
+	{
+		.compatible = "oxsemi,ox810se-dwmac",
+		.data = &ox810se_dwmac_data,
+	},
+	{
+		.compatible = "oxsemi,ox820-dwmac",
+		.data = &ox820_dwmac_data,
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, oxnas_dwmac_match);

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

@@ -7159,7 +7159,8 @@ int stmmac_dvr_probe(struct device *device,
 
 	pm_runtime_get_noresume(device);
 	pm_runtime_set_active(device);
-	pm_runtime_enable(device);
+	if (!pm_runtime_enabled(device))
+		pm_runtime_enable(device);
 
 	if (priv->hw->pcs != STMMAC_PCS_TBI &&
 	    priv->hw->pcs != STMMAC_PCS_RTBI) {

drivers/net/ethernet/ti/cpsw.c

@@ -349,7 +349,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
 	struct cpsw_common	*cpsw = ndev_to_cpsw(xmeta->ndev);
 	int			pkt_size = cpsw->rx_packet_max;
 	int			ret = 0, port, ch = xmeta->ch;
-	int			headroom = CPSW_HEADROOM;
+	int			headroom = CPSW_HEADROOM_NA;
 	struct net_device	*ndev = xmeta->ndev;
 	struct cpsw_priv	*priv;
 	struct page_pool	*pool;
@@ -392,7 +392,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
 	}
 
 	if (priv->xdp_prog) {
-		int headroom = CPSW_HEADROOM, size = len;
+		int size = len;
 
 		xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 		if (status & CPDMA_RX_VLAN_ENCAP) {
@@ -442,7 +442,7 @@ requeue:
 	xmeta->ndev = ndev;
 	xmeta->ch = ch;
 
-	dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
+	dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
 	ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 				       pkt_size, 0);
 	if (ret < 0) {

drivers/net/ethernet/ti/cpsw_new.c

@@ -283,7 +283,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
 {
 	struct page *new_page, *page = token;
 	void *pa = page_address(page);
-	int headroom = CPSW_HEADROOM;
+	int headroom = CPSW_HEADROOM_NA;
 	struct cpsw_meta_xdp *xmeta;
 	struct cpsw_common *cpsw;
 	struct net_device *ndev;
@@ -336,7 +336,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
 	}
 
 	if (priv->xdp_prog) {
-		int headroom = CPSW_HEADROOM, size = len;
+		int size = len;
 
 		xdp_init_buff(&xdp, PAGE_SIZE, &priv->xdp_rxq[ch]);
 		if (status & CPDMA_RX_VLAN_ENCAP) {
@@ -386,7 +386,7 @@ requeue:
 	xmeta->ndev = ndev;
 	xmeta->ch = ch;
 
-	dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM;
+	dma = page_pool_get_dma_addr(new_page) + CPSW_HEADROOM_NA;
 	ret = cpdma_chan_submit_mapped(cpsw->rxv[ch].ch, new_page, dma,
 				       pkt_size, 0);
 	if (ret < 0) {

drivers/net/ethernet/ti/cpsw_priv.c

@@ -1122,7 +1122,7 @@ int cpsw_fill_rx_channels(struct cpsw_priv *priv)
 			xmeta->ndev = priv->ndev;
 			xmeta->ch = ch;
 
-			dma = page_pool_get_dma_addr(page) + CPSW_HEADROOM;
+			dma = page_pool_get_dma_addr(page) + CPSW_HEADROOM_NA;
 			ret = cpdma_chan_idle_submit_mapped(cpsw->rxv[ch].ch,
 							    page, dma,
 							    cpsw->rx_packet_max,

drivers/net/ethernet/vertexcom/Kconfig

@@ -5,7 +5,7 @@
 
 config NET_VENDOR_VERTEXCOM
 	bool "Vertexcom devices"
-	default n
+	default y
 	help
 	  If you have a network (Ethernet) card belonging to this class, say Y.
 

drivers/net/ethernet/xilinx/xilinx_axienet_main.c

@@ -41,8 +41,9 @@
 #include "xilinx_axienet.h"
 
 /* Descriptors defines for Tx and Rx DMA */
-#define TX_BD_NUM_DEFAULT		64
+#define TX_BD_NUM_DEFAULT		128
 #define RX_BD_NUM_DEFAULT		1024
+#define TX_BD_NUM_MIN			(MAX_SKB_FRAGS + 1)
 #define TX_BD_NUM_MAX			4096
 #define RX_BD_NUM_MAX			4096
 
@@ -496,7 +497,8 @@ static void axienet_setoptions(struct net_device *ndev, u32 options)
 
 static int __axienet_device_reset(struct axienet_local *lp)
 {
-	u32 timeout;
+	u32 value;
+	int ret;
 
 	/* Reset Axi DMA. This would reset Axi Ethernet core as well. The reset
 	 * process of Axi DMA takes a while to complete as all pending
@@ -506,15 +508,23 @@ static int __axienet_device_reset(struct axienet_local *lp)
 	 * they both reset the entire DMA core, so only one needs to be used.
 	 */
 	axienet_dma_out32(lp, XAXIDMA_TX_CR_OFFSET, XAXIDMA_CR_RESET_MASK);
-	timeout = DELAY_OF_ONE_MILLISEC;
+	ret = read_poll_timeout(axienet_dma_in32, value,
-	while (axienet_dma_in32(lp, XAXIDMA_TX_CR_OFFSET) &
+				!(value & XAXIDMA_CR_RESET_MASK),
-				XAXIDMA_CR_RESET_MASK) {
+				DELAY_OF_ONE_MILLISEC, 50000, false, lp,
-		udelay(1);
+				XAXIDMA_TX_CR_OFFSET);
-		if (--timeout == 0) {
+	if (ret) {
-			netdev_err(lp->ndev, "%s: DMA reset timeout!\n",
+		dev_err(lp->dev, "%s: DMA reset timeout!\n", __func__);
-				   __func__);
+		return ret;
-			return -ETIMEDOUT;
+	}
-		}
+
+	/* Wait for PhyRstCmplt bit to be set, indicating the PHY reset has finished */
+	ret = read_poll_timeout(axienet_ior, value,
+				value & XAE_INT_PHYRSTCMPLT_MASK,
+				DELAY_OF_ONE_MILLISEC, 50000, false, lp,
+				XAE_IS_OFFSET);
+	if (ret) {
+		dev_err(lp->dev, "%s: timeout waiting for PhyRstCmplt\n", __func__);
+		return ret;
 	}
 
 	return 0;
@@ -623,6 +633,8 @@ static int axienet_free_tx_chain(struct net_device *ndev, u32 first_bd,
 		if (nr_bds == -1 && !(status & XAXIDMA_BD_STS_COMPLETE_MASK))
 			break;
 
+		/* Ensure we see complete descriptor update */
+		dma_rmb();
 		phys = desc_get_phys_addr(lp, cur_p);
 		dma_unmap_single(ndev->dev.parent, phys,
 				 (cur_p->cntrl & XAXIDMA_BD_CTRL_LENGTH_MASK),
@@ -631,13 +643,15 @@ static int axienet_free_tx_chain(struct net_device *ndev, u32 first_bd,
 		if (cur_p->skb && (status & XAXIDMA_BD_STS_COMPLETE_MASK))
 			dev_consume_skb_irq(cur_p->skb);
 
-		cur_p->cntrl = 0;
 		cur_p->app0 = 0;
 		cur_p->app1 = 0;
 		cur_p->app2 = 0;
 		cur_p->app4 = 0;
-		cur_p->status = 0;
 		cur_p->skb = NULL;
+		/* ensure our transmit path and device don't prematurely see status cleared */
+		wmb();
+		cur_p->cntrl = 0;
+		cur_p->status = 0;
 
 		if (sizep)
 			*sizep += status & XAXIDMA_BD_STS_ACTUAL_LEN_MASK;
@@ -646,6 +660,32 @@ static int axienet_free_tx_chain(struct net_device *ndev, u32 first_bd,
 	return i;
 }
 
+/**
+ * axienet_check_tx_bd_space - Checks if a BD/group of BDs are currently busy
+ * @lp:		Pointer to the axienet_local structure
+ * @num_frag:	The number of BDs to check for
+ *
+ * Return: 0, on success
+ *	    NETDEV_TX_BUSY, if any of the descriptors are not free
+ *
+ * This function is invoked before BDs are allocated and transmission starts.
+ * This function returns 0 if a BD or group of BDs can be allocated for
+ * transmission. If the BD or any of the BDs are not free the function
+ * returns a busy status. This is invoked from axienet_start_xmit.
+ */
+static inline int axienet_check_tx_bd_space(struct axienet_local *lp,
+					    int num_frag)
+{
+	struct axidma_bd *cur_p;
+
+	/* Ensure we see all descriptor updates from device or TX IRQ path */
+	rmb();
+	cur_p = &lp->tx_bd_v[(lp->tx_bd_tail + num_frag) % lp->tx_bd_num];
+	if (cur_p->cntrl)
+		return NETDEV_TX_BUSY;
+	return 0;
+}
+
 /**
  * axienet_start_xmit_done - Invoked once a transmit is completed by the
  * Axi DMA Tx channel.
@@ -675,30 +715,8 @@ static void axienet_start_xmit_done(struct net_device *ndev)
 	/* Matches barrier in axienet_start_xmit */
 	smp_mb();
 
-	netif_wake_queue(ndev);
+	if (!axienet_check_tx_bd_space(lp, MAX_SKB_FRAGS + 1))
-}
+		netif_wake_queue(ndev);
-
-/**
- * axienet_check_tx_bd_space - Checks if a BD/group of BDs are currently busy
- * @lp:		Pointer to the axienet_local structure
- * @num_frag:	The number of BDs to check for
- *
- * Return: 0, on success
- *	    NETDEV_TX_BUSY, if any of the descriptors are not free
- *
- * This function is invoked before BDs are allocated and transmission starts.
- * This function returns 0 if a BD or group of BDs can be allocated for
- * transmission. If the BD or any of the BDs are not free the function
- * returns a busy status. This is invoked from axienet_start_xmit.
- */
-static inline int axienet_check_tx_bd_space(struct axienet_local *lp,
-					    int num_frag)
-{
-	struct axidma_bd *cur_p;
-	cur_p = &lp->tx_bd_v[(lp->tx_bd_tail + num_frag) % lp->tx_bd_num];
-	if (cur_p->status & XAXIDMA_BD_STS_ALL_MASK)
-		return NETDEV_TX_BUSY;
-	return 0;
 }
 
 /**
@@ -730,20 +748,15 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	num_frag = skb_shinfo(skb)->nr_frags;
 	cur_p = &lp->tx_bd_v[lp->tx_bd_tail];
 
-	if (axienet_check_tx_bd_space(lp, num_frag)) {
+	if (axienet_check_tx_bd_space(lp, num_frag + 1)) {
-		if (netif_queue_stopped(ndev))
+		/* Should not happen as last start_xmit call should have
-			return NETDEV_TX_BUSY;
+		 * checked for sufficient space and queue should only be
-
+		 * woken when sufficient space is available.
+		 */
 		netif_stop_queue(ndev);
-
+		if (net_ratelimit())
-		/* Matches barrier in axienet_start_xmit_done */
+			netdev_warn(ndev, "TX ring unexpectedly full\n");
-		smp_mb();
+		return NETDEV_TX_BUSY;
-
-		/* Space might have just been freed - check again */
-		if (axienet_check_tx_bd_space(lp, num_frag))
-			return NETDEV_TX_BUSY;
-
-		netif_wake_queue(ndev);
 	}
 
 	if (skb->ip_summed == CHECKSUM_PARTIAL) {
@@ -804,6 +817,18 @@ axienet_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	if (++lp->tx_bd_tail >= lp->tx_bd_num)
 		lp->tx_bd_tail = 0;
 
+	/* Stop queue if next transmit may not have space */
+	if (axienet_check_tx_bd_space(lp, MAX_SKB_FRAGS + 1)) {
+		netif_stop_queue(ndev);
+
+		/* Matches barrier in axienet_start_xmit_done */
+		smp_mb();
+
+		/* Space might have just been freed - check again */
+		if (!axienet_check_tx_bd_space(lp, MAX_SKB_FRAGS + 1))
+			netif_wake_queue(ndev);
+	}
+
 	return NETDEV_TX_OK;
 }
 
@@ -834,6 +859,8 @@ static void axienet_recv(struct net_device *ndev)
 
 		tail_p = lp->rx_bd_p + sizeof(*lp->rx_bd_v) * lp->rx_bd_ci;
 
+		/* Ensure we see complete descriptor update */
+		dma_rmb();
 		phys = desc_get_phys_addr(lp, cur_p);
 		dma_unmap_single(ndev->dev.parent, phys, lp->max_frm_size,
 				 DMA_FROM_DEVICE);
@@ -1352,7 +1379,8 @@ axienet_ethtools_set_ringparam(struct net_device *ndev,
 	if (ering->rx_pending > RX_BD_NUM_MAX ||
 	    ering->rx_mini_pending ||
 	    ering->rx_jumbo_pending ||
-	    ering->rx_pending > TX_BD_NUM_MAX)
+	    ering->tx_pending < TX_BD_NUM_MIN ||
+	    ering->tx_pending > TX_BD_NUM_MAX)
 		return -EINVAL;
 
 	if (netif_running(ndev))
@@ -2027,6 +2055,11 @@ static int axienet_probe(struct platform_device *pdev)
 	lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD;
 	lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD;
 
+	/* Reset core now that clocks are enabled, prior to accessing MDIO */
+	ret = __axienet_device_reset(lp);
+	if (ret)
+		goto cleanup_clk;
+
 	lp->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
 	if (lp->phy_node) {
 		ret = axienet_mdio_setup(lp);

drivers/net/ipa/ipa_endpoint.c

@@ -1080,27 +1080,38 @@ static void ipa_endpoint_replenish(struct ipa_endpoint *endpoint, bool add_one)
 {
 	struct gsi *gsi;
 	u32 backlog;
+	int delta;
 
-	if (!endpoint->replenish_enabled) {
+	if (!test_bit(IPA_REPLENISH_ENABLED, endpoint->replenish_flags)) {
 		if (add_one)
 			atomic_inc(&endpoint->replenish_saved);
 		return;
 	}
 
+	/* If already active, just update the backlog */
+	if (test_and_set_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags)) {
+		if (add_one)
+			atomic_inc(&endpoint->replenish_backlog);
+		return;
+	}
+
 	while (atomic_dec_not_zero(&endpoint->replenish_backlog))
 		if (ipa_endpoint_replenish_one(endpoint))
 			goto try_again_later;
+
+	clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags);
+
 	if (add_one)
 		atomic_inc(&endpoint->replenish_backlog);
 
 	return;
 
 try_again_later:
-	/* The last one didn't succeed, so fix the backlog */
+	clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags);
-	backlog = atomic_inc_return(&endpoint->replenish_backlog);
 
-	if (add_one)
+	/* The last one didn't succeed, so fix the backlog */
-		atomic_inc(&endpoint->replenish_backlog);
+	delta = add_one ? 2 : 1;
+	backlog = atomic_add_return(delta, &endpoint->replenish_backlog);
 
 	/* Whenever a receive buffer transaction completes we'll try to
 	 * replenish again.  It's unlikely, but if we fail to supply even
@@ -1120,7 +1131,7 @@ static void ipa_endpoint_replenish_enable(struct ipa_endpoint *endpoint)
 	u32 max_backlog;
 	u32 saved;
 
-	endpoint->replenish_enabled = true;
+	set_bit(IPA_REPLENISH_ENABLED, endpoint->replenish_flags);
 	while ((saved = atomic_xchg(&endpoint->replenish_saved, 0)))
 		atomic_add(saved, &endpoint->replenish_backlog);
 
@@ -1134,7 +1145,7 @@ static void ipa_endpoint_replenish_disable(struct ipa_endpoint *endpoint)
 {
 	u32 backlog;
 
-	endpoint->replenish_enabled = false;
+	clear_bit(IPA_REPLENISH_ENABLED, endpoint->replenish_flags);
 	while ((backlog = atomic_xchg(&endpoint->replenish_backlog, 0)))
 		atomic_add(backlog, &endpoint->replenish_saved);
 }
@@ -1691,7 +1702,8 @@ static void ipa_endpoint_setup_one(struct ipa_endpoint *endpoint)
 		/* RX transactions require a single TRE, so the maximum
 		 * backlog is the same as the maximum outstanding TREs.
 		 */
-		endpoint->replenish_enabled = false;
+		clear_bit(IPA_REPLENISH_ENABLED, endpoint->replenish_flags);
+		clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags);
 		atomic_set(&endpoint->replenish_saved,
 			   gsi_channel_tre_max(gsi, endpoint->channel_id));
 		atomic_set(&endpoint->replenish_backlog, 0);

drivers/net/ipa/ipa_endpoint.h

@@ -40,6 +40,19 @@ enum ipa_endpoint_name {
 
 #define IPA_ENDPOINT_MAX		32	/* Max supported by driver */
 
+/**
+ * enum ipa_replenish_flag:	RX buffer replenish flags
+ *
+ * @IPA_REPLENISH_ENABLED:	Whether receive buffer replenishing is enabled
+ * @IPA_REPLENISH_ACTIVE:	Whether replenishing is underway
+ * @IPA_REPLENISH_COUNT:	Number of defined replenish flags
+ */
+enum ipa_replenish_flag {
+	IPA_REPLENISH_ENABLED,
+	IPA_REPLENISH_ACTIVE,
+	IPA_REPLENISH_COUNT,	/* Number of flags (must be last) */
+};
+
 /**
  * struct ipa_endpoint - IPA endpoint information
  * @ipa:		IPA pointer
@@ -51,7 +64,7 @@ enum ipa_endpoint_name {
  * @trans_tre_max:	Maximum number of TRE descriptors per transaction
  * @evt_ring_id:	GSI event ring used by the endpoint
  * @netdev:		Network device pointer, if endpoint uses one
- * @replenish_enabled:	Whether receive buffer replenishing is enabled
+ * @replenish_flags:	Replenishing state flags
  * @replenish_ready:	Number of replenish transactions without doorbell
  * @replenish_saved:	Replenish requests held while disabled
  * @replenish_backlog:	Number of buffers needed to fill hardware queue
@@ -72,7 +85,7 @@ struct ipa_endpoint {
 	struct net_device *netdev;
 
 	/* Receive buffer replenishing for RX endpoints */
-	bool replenish_enabled;
+	DECLARE_BITMAP(replenish_flags, IPA_REPLENISH_COUNT);
 	u32 replenish_ready;
 	atomic_t replenish_saved;
 	atomic_t replenish_backlog;

drivers/net/phy/at803x.c

@@ -421,7 +421,7 @@ static int at803x_set_wol(struct phy_device *phydev,
 	const u8 *mac;
 	int ret, irq_enabled;
 	unsigned int i;
-	const unsigned int offsets[] = {
+	static const unsigned int offsets[] = {
 		AT803X_LOC_MAC_ADDR_32_47_OFFSET,
 		AT803X_LOC_MAC_ADDR_16_31_OFFSET,
 		AT803X_LOC_MAC_ADDR_0_15_OFFSET,

drivers/net/phy/marvell.c

@@ -189,6 +189,8 @@
 #define MII_88E1510_GEN_CTRL_REG_1_MODE_RGMII_SGMII	0x4
 #define MII_88E1510_GEN_CTRL_REG_1_RESET	0x8000	/* Soft reset */
 
+#define MII_88E1510_MSCR_2		0x15
+
 #define MII_VCT5_TX_RX_MDI0_COUPLING	0x10
 #define MII_VCT5_TX_RX_MDI1_COUPLING	0x11
 #define MII_VCT5_TX_RX_MDI2_COUPLING	0x12
@@ -1932,6 +1934,58 @@ static void marvell_get_stats(struct phy_device *phydev,
 		data[i] = marvell_get_stat(phydev, i);
 }
 
+static int m88e1510_loopback(struct phy_device *phydev, bool enable)
+{
+	int err;
+
+	if (enable) {
+		u16 bmcr_ctl = 0, mscr2_ctl = 0;
+
+		if (phydev->speed == SPEED_1000)
+			bmcr_ctl = BMCR_SPEED1000;
+		else if (phydev->speed == SPEED_100)
+			bmcr_ctl = BMCR_SPEED100;
+
+		if (phydev->duplex == DUPLEX_FULL)
+			bmcr_ctl |= BMCR_FULLDPLX;
+
+		err = phy_write(phydev, MII_BMCR, bmcr_ctl);
+		if (err < 0)
+			return err;
+
+		if (phydev->speed == SPEED_1000)
+			mscr2_ctl = BMCR_SPEED1000;
+		else if (phydev->speed == SPEED_100)
+			mscr2_ctl = BMCR_SPEED100;
+
+		err = phy_modify_paged(phydev, MII_MARVELL_MSCR_PAGE,
+				       MII_88E1510_MSCR_2, BMCR_SPEED1000 |
+				       BMCR_SPEED100, mscr2_ctl);
+		if (err < 0)
+			return err;
+
+		/* Need soft reset to have speed configuration takes effect */
+		err = genphy_soft_reset(phydev);
+		if (err < 0)
+			return err;
+
+		/* FIXME: Based on trial and error test, it seem 1G need to have
+		 * delay between soft reset and loopback enablement.
+		 */
+		if (phydev->speed == SPEED_1000)
+			msleep(1000);
+
+		return phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK,
+				  BMCR_LOOPBACK);
+	} else {
+		err = phy_modify(phydev, MII_BMCR, BMCR_LOOPBACK, 0);
+		if (err < 0)
+			return err;
+
+		return phy_config_aneg(phydev);
+	}
+}
+
 static int marvell_vct5_wait_complete(struct phy_device *phydev)
 {
 	int i;
@@ -3078,7 +3132,7 @@ static struct phy_driver marvell_drivers[] = {
 		.get_sset_count = marvell_get_sset_count,
 		.get_strings = marvell_get_strings,
 		.get_stats = marvell_get_stats,
-		.set_loopback = genphy_loopback,
+		.set_loopback = m88e1510_loopback,
 		.get_tunable = m88e1011_get_tunable,
 		.set_tunable = m88e1011_set_tunable,
 		.cable_test_start = marvell_vct7_cable_test_start,

drivers/net/phy/micrel.c

@@ -1726,8 +1726,8 @@ static struct phy_driver ksphy_driver[] = {
 	.config_init	= kszphy_config_init,
 	.config_intr	= kszphy_config_intr,
 	.handle_interrupt = kszphy_handle_interrupt,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ8021,
 	.phy_id_mask	= 0x00ffffff,
@@ -1741,8 +1741,8 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ8031,
 	.phy_id_mask	= 0x00ffffff,
@@ -1756,8 +1756,8 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ8041,
 	.phy_id_mask	= MICREL_PHY_ID_MASK,
@@ -1788,8 +1788,8 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.name		= "Micrel KSZ8051",
 	/* PHY_BASIC_FEATURES */
@@ -1802,8 +1802,8 @@ static struct phy_driver ksphy_driver[] = {
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
 	.match_phy_device = ksz8051_match_phy_device,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ8001,
 	.name		= "Micrel KSZ8001 or KS8721",
@@ -1817,8 +1817,8 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ8081,
 	.name		= "Micrel KSZ8081 or KSZ8091",
@@ -1848,8 +1848,8 @@ static struct phy_driver ksphy_driver[] = {
 	.config_init	= ksz8061_config_init,
 	.config_intr	= kszphy_config_intr,
 	.handle_interrupt = kszphy_handle_interrupt,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ9021,
 	.phy_id_mask	= 0x000ffffe,
@@ -1864,8 +1864,8 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= kszphy_resume,
 	.read_mmd	= genphy_read_mmd_unsupported,
 	.write_mmd	= genphy_write_mmd_unsupported,
 }, {
@@ -1883,7 +1883,7 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
 	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_LAN8814,
@@ -1928,7 +1928,7 @@ static struct phy_driver ksphy_driver[] = {
 	.get_sset_count = kszphy_get_sset_count,
 	.get_strings	= kszphy_get_strings,
 	.get_stats	= kszphy_get_stats,
-	.suspend	= genphy_suspend,
+	.suspend	= kszphy_suspend,
 	.resume		= kszphy_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ8873MLL,

drivers/net/phy/sfp.c

@@ -1641,17 +1641,20 @@ static int sfp_sm_probe_for_phy(struct sfp *sfp)
 static int sfp_module_parse_power(struct sfp *sfp)
 {
 	u32 power_mW = 1000;
+	bool supports_a2;
 
 	if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL))
 		power_mW = 1500;
 	if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL))
 		power_mW = 2000;
 
+	supports_a2 = sfp->id.ext.sff8472_compliance !=
+				SFP_SFF8472_COMPLIANCE_NONE ||
+		      sfp->id.ext.diagmon & SFP_DIAGMON_DDM;
+
 	if (power_mW > sfp->max_power_mW) {
 		/* Module power specification exceeds the allowed maximum. */
-		if (sfp->id.ext.sff8472_compliance ==
+		if (!supports_a2) {
-			SFP_SFF8472_COMPLIANCE_NONE &&
-		    !(sfp->id.ext.diagmon & SFP_DIAGMON_DDM)) {
 			/* The module appears not to implement bus address
 			 * 0xa2, so assume that the module powers up in the
 			 * indicated mode.
@@ -1668,11 +1671,25 @@ static int sfp_module_parse_power(struct sfp *sfp)
 		}
 	}
 
+	if (power_mW <= 1000) {
+		/* Modules below 1W do not require a power change sequence */
+		sfp->module_power_mW = power_mW;
+		return 0;
+	}
+
+	if (!supports_a2) {
+		/* The module power level is below the host maximum and the
+		 * module appears not to implement bus address 0xa2, so assume
+		 * that the module powers up in the indicated mode.
+		 */
+		return 0;
+	}
+
 	/* If the module requires a higher power mode, but also requires
 	 * an address change sequence, warn the user that the module may
 	 * not be functional.
 	 */
-	if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE && power_mW > 1000) {
+	if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE) {
 		dev_warn(sfp->dev,
 			 "Address Change Sequence not supported but module requires %u.%uW, module may not be functional\n",
 			 power_mW / 1000, (power_mW / 100) % 10);

drivers/net/usb/qmi_wwan.c

@@ -1316,6 +1316,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x19d2, 0x1426, 2)},	/* ZTE MF91 */
 	{QMI_FIXED_INTF(0x19d2, 0x1428, 2)},	/* Telewell TW-LTE 4G v2 */
 	{QMI_FIXED_INTF(0x19d2, 0x1432, 3)},	/* ZTE ME3620 */
+	{QMI_FIXED_INTF(0x19d2, 0x1485, 5)},	/* ZTE MF286D */
 	{QMI_FIXED_INTF(0x19d2, 0x2002, 4)},	/* ZTE (Vodafone) K3765-Z */
 	{QMI_FIXED_INTF(0x2001, 0x7e16, 3)},	/* D-Link DWM-221 */
 	{QMI_FIXED_INTF(0x2001, 0x7e19, 4)},	/* D-Link DWM-221 B1 */
@@ -1401,6 +1402,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x413c, 0x81e0, 0)},	/* Dell Wireless 5821e with eSIM support*/
 	{QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)},	/* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
 	{QMI_FIXED_INTF(0x03f0, 0x9d1d, 1)},	/* HP lt4120 Snapdragon X5 LTE */
+	{QMI_QUIRK_SET_DTR(0x22de, 0x9051, 2)}, /* Hucom Wireless HM-211S/K */
 	{QMI_FIXED_INTF(0x22de, 0x9061, 3)},	/* WeTelecom WPD-600N */
 	{QMI_QUIRK_SET_DTR(0x1e0e, 0x9001, 5)},	/* SIMCom 7100E, 7230E, 7600E ++ */
 	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)},	/* Quectel EC21 Mini PCIe */

drivers/net/usb/smsc95xx.c

@@ -1962,7 +1962,8 @@ static const struct driver_info smsc95xx_info = {
 	.bind		= smsc95xx_bind,
 	.unbind		= smsc95xx_unbind,
 	.link_reset	= smsc95xx_link_reset,
-	.reset		= smsc95xx_start_phy,
+	.reset		= smsc95xx_reset,
+	.check_connect	= smsc95xx_start_phy,
 	.stop		= smsc95xx_stop,
 	.rx_fixup	= smsc95xx_rx_fixup,
 	.tx_fixup	= smsc95xx_tx_fixup,

drivers/net/wwan/mhi_wwan_mbim.c

@@ -385,13 +385,13 @@ static void mhi_net_rx_refill_work(struct work_struct *work)
 	int err;
 
 	while (!mhi_queue_is_full(mdev, DMA_FROM_DEVICE)) {
-		struct sk_buff *skb = alloc_skb(MHI_DEFAULT_MRU, GFP_KERNEL);
+		struct sk_buff *skb = alloc_skb(mbim->mru, GFP_KERNEL);
 
 		if (unlikely(!skb))
 			break;
 
 		err = mhi_queue_skb(mdev, DMA_FROM_DEVICE, skb,
-				    MHI_DEFAULT_MRU, MHI_EOT);
+				    mbim->mru, MHI_EOT);
 		if (unlikely(err)) {
 			kfree_skb(skb);
 			break;

drivers/nfc/pn544/i2c.c

@@ -188,7 +188,7 @@ do {								\
 static void pn544_hci_i2c_platform_init(struct pn544_i2c_phy *phy)
 {
 	int polarity, retry, ret;
-	char rset_cmd[] = { 0x05, 0xF9, 0x04, 0x00, 0xC3, 0xE5 };
+	static const char rset_cmd[] = { 0x05, 0xF9, 0x04, 0x00, 0xC3, 0xE5 };
 	int count = sizeof(rset_cmd);
 
 	nfc_info(&phy->i2c_dev->dev, "Detecting nfc_en polarity\n");

drivers/nfc/st21nfca/se.c

@@ -316,6 +316,11 @@ int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
 			return -ENOMEM;
 
 		transaction->aid_len = skb->data[1];
+
+		/* Checking if the length of the AID is valid */
+		if (transaction->aid_len > sizeof(transaction->aid))
+			return -EINVAL;
+
 		memcpy(transaction->aid, &skb->data[2],
 		       transaction->aid_len);
 
@@ -325,6 +330,11 @@ int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
 			return -EPROTO;
 
 		transaction->params_len = skb->data[transaction->aid_len + 3];
+
+		/* Total size is allocated (skb->len - 2) minus fixed array members */
+		if (transaction->params_len > ((skb->len - 2) - sizeof(struct nfc_evt_transaction)))
+			return -EINVAL;
+
 		memcpy(transaction->params, skb->data +
 		       transaction->aid_len + 4, transaction->params_len);
 

include/linux/bpf.h

@@ -316,7 +316,12 @@ enum bpf_type_flag {
 	 */
 	MEM_RDONLY		= BIT(1 + BPF_BASE_TYPE_BITS),
 
-	__BPF_TYPE_LAST_FLAG	= MEM_RDONLY,
+	/* MEM was "allocated" from a different helper, and cannot be mixed
+	 * with regular non-MEM_ALLOC'ed MEM types.
+	 */
+	MEM_ALLOC		= BIT(2 + BPF_BASE_TYPE_BITS),
+
+	__BPF_TYPE_LAST_FLAG	= MEM_ALLOC,
 };
 
 /* Max number of base types. */
@@ -400,7 +405,7 @@ enum bpf_return_type {
 	RET_PTR_TO_SOCKET_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_SOCKET,
 	RET_PTR_TO_TCP_SOCK_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_TCP_SOCK,
 	RET_PTR_TO_SOCK_COMMON_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_SOCK_COMMON,
-	RET_PTR_TO_ALLOC_MEM_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_ALLOC_MEM,
+	RET_PTR_TO_ALLOC_MEM_OR_NULL	= PTR_MAYBE_NULL | MEM_ALLOC | RET_PTR_TO_ALLOC_MEM,
 	RET_PTR_TO_BTF_ID_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_BTF_ID,
 
 	/* This must be the last entry. Its purpose is to ensure the enum is

include/linux/bpf_verifier.h

@@ -519,8 +519,8 @@ bpf_prog_offload_replace_insn(struct bpf_verifier_env *env, u32 off,
 void
 bpf_prog_offload_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt);
 
-int check_ctx_reg(struct bpf_verifier_env *env,
+int check_ptr_off_reg(struct bpf_verifier_env *env,
-		  const struct bpf_reg_state *reg, int regno);
+		      const struct bpf_reg_state *reg, int regno);
 int check_mem_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg,
 		   u32 regno, u32 mem_size);
 

include/net/inet_frag.h

@@ -117,8 +117,15 @@ int fqdir_init(struct fqdir **fqdirp, struct inet_frags *f, struct net *net);
 
 static inline void fqdir_pre_exit(struct fqdir *fqdir)
 {
-	fqdir->high_thresh = 0; /* prevent creation of new frags */
+	/* Prevent creation of new frags.
-	fqdir->dead = true;
+	 * Pairs with READ_ONCE() in inet_frag_find().
+	 */
+	WRITE_ONCE(fqdir->high_thresh, 0);
+
+	/* Pairs with READ_ONCE() in inet_frag_kill(), ip_expire()
+	 * and ip6frag_expire_frag_queue().
+	 */
+	WRITE_ONCE(fqdir->dead, true);
 }
 void fqdir_exit(struct fqdir *fqdir);
 

include/net/ipv6_frag.h

@@ -67,7 +67,8 @@ ip6frag_expire_frag_queue(struct net *net, struct frag_queue *fq)
 	struct sk_buff *head;
 
 	rcu_read_lock();
-	if (fq->q.fqdir->dead)
+	/* Paired with the WRITE_ONCE() in fqdir_pre_exit(). */
+	if (READ_ONCE(fq->q.fqdir->dead))
 		goto out_rcu_unlock;
 	spin_lock(&fq->q.lock);
 

include/net/pkt_cls.h

@@ -218,8 +218,10 @@ static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net,
 #ifdef CONFIG_NET_CLS_ACT
 	exts->type = 0;
 	exts->nr_actions = 0;
+	/* Note: we do not own yet a reference on net.
+	 * This reference might be taken later from tcf_exts_get_net().
+	 */
 	exts->net = net;
-	netns_tracker_alloc(net, &exts->ns_tracker, GFP_KERNEL);
 	exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
 				GFP_KERNEL);
 	if (!exts->actions)

include/net/sch_generic.h

@@ -1244,6 +1244,7 @@ struct psched_ratecfg {
 	u64	rate_bytes_ps; /* bytes per second */
 	u32	mult;
 	u16	overhead;
+	u16	mpu;
 	u8	linklayer;
 	u8	shift;
 };
@@ -1253,6 +1254,9 @@ static inline u64 psched_l2t_ns(const struct psched_ratecfg *r,
 {
 	len += r->overhead;
 
+	if (len < r->mpu)
+		len = r->mpu;
+
 	if (unlikely(r->linklayer == TC_LINKLAYER_ATM))
 		return ((u64)(DIV_ROUND_UP(len,48)*53) * r->mult) >> r->shift;
 
@@ -1275,6 +1279,7 @@ static inline void psched_ratecfg_getrate(struct tc_ratespec *res,
 	res->rate = min_t(u64, r->rate_bytes_ps, ~0U);
 
 	res->overhead = r->overhead;
+	res->mpu = r->mpu;
 	res->linklayer = (r->linklayer & TC_LINKLAYER_MASK);
 }
 

kernel/bpf/btf.c

@@ -5686,7 +5686,7 @@ static int btf_check_func_arg_match(struct bpf_verifier_env *env,
 					i, btf_type_str(t));
 				return -EINVAL;
 			}
-			if (check_ctx_reg(env, reg, regno))
+			if (check_ptr_off_reg(env, reg, regno))
 				return -EINVAL;
 		} else if (is_kfunc && (reg->type == PTR_TO_BTF_ID || reg2btf_ids[reg->type])) {
 			const struct btf_type *reg_ref_t;

kernel/bpf/inode.c

@@ -648,12 +648,22 @@ static int bpf_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	int opt;
 
 	opt = fs_parse(fc, bpf_fs_parameters, param, &result);
-	if (opt < 0)
+	if (opt < 0) {
 		/* We might like to report bad mount options here, but
 		 * traditionally we've ignored all mount options, so we'd
 		 * better continue to ignore non-existing options for bpf.
 		 */
-		return opt == -ENOPARAM ? 0 : opt;
+		if (opt == -ENOPARAM) {
+			opt = vfs_parse_fs_param_source(fc, param);
+			if (opt != -ENOPARAM)
+				return opt;
+
+			return 0;
+		}
+
+		if (opt < 0)
+			return opt;
+	}
 
 	switch (opt) {
 	case OPT_MODE:

kernel/bpf/verifier.c

@@ -570,6 +570,8 @@ static const char *reg_type_str(struct bpf_verifier_env *env,
 
 	if (type & MEM_RDONLY)
 		strncpy(prefix, "rdonly_", 16);
+	if (type & MEM_ALLOC)
+		strncpy(prefix, "alloc_", 16);
 
 	snprintf(env->type_str_buf, TYPE_STR_BUF_LEN, "%s%s%s",
 		 prefix, str[base_type(type)], postfix);
@@ -616,7 +618,7 @@ static void mark_reg_scratched(struct bpf_verifier_env *env, u32 regno)
 
 static void mark_stack_slot_scratched(struct bpf_verifier_env *env, u32 spi)
 {
-	env->scratched_stack_slots |= 1UL << spi;
+	env->scratched_stack_slots |= 1ULL << spi;
 }
 
 static bool reg_scratched(const struct bpf_verifier_env *env, u32 regno)
@@ -637,14 +639,14 @@ static bool verifier_state_scratched(const struct bpf_verifier_env *env)
 static void mark_verifier_state_clean(struct bpf_verifier_env *env)
 {
 	env->scratched_regs = 0U;
-	env->scratched_stack_slots = 0UL;
+	env->scratched_stack_slots = 0ULL;
 }
 
 /* Used for printing the entire verifier state. */
 static void mark_verifier_state_scratched(struct bpf_verifier_env *env)
 {
 	env->scratched_regs = ~0U;
-	env->scratched_stack_slots = ~0UL;
+	env->scratched_stack_slots = ~0ULL;
 }
 
 /* The reg state of a pointer or a bounded scalar was saved when
@@ -3969,16 +3971,17 @@ static int get_callee_stack_depth(struct bpf_verifier_env *env,
 }
 #endif
 
-int check_ctx_reg(struct bpf_verifier_env *env,
+static int __check_ptr_off_reg(struct bpf_verifier_env *env,
-		  const struct bpf_reg_state *reg, int regno)
+			       const struct bpf_reg_state *reg, int regno,
+			       bool fixed_off_ok)
 {
-	/* Access to ctx or passing it to a helper is only allowed in
+	/* Access to this pointer-typed register or passing it to a helper
-	 * its original, unmodified form.
+	 * is only allowed in its original, unmodified form.
 	 */
 
-	if (reg->off) {
+	if (!fixed_off_ok && reg->off) {
-		verbose(env, "dereference of modified ctx ptr R%d off=%d disallowed\n",
+		verbose(env, "dereference of modified %s ptr R%d off=%d disallowed\n",
-			regno, reg->off);
+			reg_type_str(env, reg->type), regno, reg->off);
 		return -EACCES;
 	}
 
@@ -3986,13 +3989,20 @@ int check_ctx_reg(struct bpf_verifier_env *env,
 		char tn_buf[48];
 
 		tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off);
-		verbose(env, "variable ctx access var_off=%s disallowed\n", tn_buf);
+		verbose(env, "variable %s access var_off=%s disallowed\n",
+			reg_type_str(env, reg->type), tn_buf);
 		return -EACCES;
 	}
 
 	return 0;
 }
 
+int check_ptr_off_reg(struct bpf_verifier_env *env,
+		      const struct bpf_reg_state *reg, int regno)
+{
+	return __check_ptr_off_reg(env, reg, regno, false);
+}
+
 static int __check_buffer_access(struct bpf_verifier_env *env,
 				 const char *buf_info,
 				 const struct bpf_reg_state *reg,
@@ -4437,7 +4447,7 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn
 			return -EACCES;
 		}
 
-		err = check_ctx_reg(env, reg, regno);
+		err = check_ptr_off_reg(env, reg, regno);
 		if (err < 0)
 			return err;
 
@@ -5127,6 +5137,7 @@ static const struct bpf_reg_types mem_types = {
 		PTR_TO_MAP_KEY,
 		PTR_TO_MAP_VALUE,
 		PTR_TO_MEM,
+		PTR_TO_MEM | MEM_ALLOC,
 		PTR_TO_BUF,
 	},
 };
@@ -5144,7 +5155,7 @@ static const struct bpf_reg_types int_ptr_types = {
 static const struct bpf_reg_types fullsock_types = { .types = { PTR_TO_SOCKET } };
 static const struct bpf_reg_types scalar_types = { .types = { SCALAR_VALUE } };
 static const struct bpf_reg_types context_types = { .types = { PTR_TO_CTX } };
-static const struct bpf_reg_types alloc_mem_types = { .types = { PTR_TO_MEM } };
+static const struct bpf_reg_types alloc_mem_types = { .types = { PTR_TO_MEM | MEM_ALLOC } };
 static const struct bpf_reg_types const_map_ptr_types = { .types = { CONST_PTR_TO_MAP } };
 static const struct bpf_reg_types btf_ptr_types = { .types = { PTR_TO_BTF_ID } };
 static const struct bpf_reg_types spin_lock_types = { .types = { PTR_TO_MAP_VALUE } };
@@ -5244,12 +5255,6 @@ found:
 				kernel_type_name(btf_vmlinux, *arg_btf_id));
 			return -EACCES;
 		}
-
-		if (!tnum_is_const(reg->var_off) || reg->var_off.value) {
-			verbose(env, "R%d is a pointer to in-kernel struct with non-zero offset\n",
-				regno);
-			return -EACCES;
-		}
 	}
 
 	return 0;
@@ -5304,10 +5309,33 @@ static int check_func_arg(struct bpf_verifier_env *env, u32 arg,
 	if (err)
 		return err;
 
-	if (type == PTR_TO_CTX) {
+	switch ((u32)type) {
-		err = check_ctx_reg(env, reg, regno);
+	case SCALAR_VALUE:
+	/* Pointer types where reg offset is explicitly allowed: */
+	case PTR_TO_PACKET:
+	case PTR_TO_PACKET_META:
+	case PTR_TO_MAP_KEY:
+	case PTR_TO_MAP_VALUE:
+	case PTR_TO_MEM:
+	case PTR_TO_MEM | MEM_RDONLY:
+	case PTR_TO_MEM | MEM_ALLOC:
+	case PTR_TO_BUF:
+	case PTR_TO_BUF | MEM_RDONLY:
+	case PTR_TO_STACK:
+		/* Some of the argument types nevertheless require a
+		 * zero register offset.
+		 */
+		if (arg_type == ARG_PTR_TO_ALLOC_MEM)
+			goto force_off_check;
+		break;
+	/* All the rest must be rejected: */
+	default:
+force_off_check:
+		err = __check_ptr_off_reg(env, reg, regno,
+					  type == PTR_TO_BTF_ID);
 		if (err < 0)
 			return err;
+		break;
 	}
 
 skip_type_check:
@@ -9507,9 +9535,13 @@ static int check_ld_imm(struct bpf_verifier_env *env, struct bpf_insn *insn)
 		return 0;
 	}
 
-	if (insn->src_reg == BPF_PSEUDO_BTF_ID) {
+	/* All special src_reg cases are listed below. From this point onwards
-		mark_reg_known_zero(env, regs, insn->dst_reg);
+	 * we either succeed and assign a corresponding dst_reg->type after
+	 * zeroing the offset, or fail and reject the program.
+	 */
+	mark_reg_known_zero(env, regs, insn->dst_reg);
 
+	if (insn->src_reg == BPF_PSEUDO_BTF_ID) {
 		dst_reg->type = aux->btf_var.reg_type;
 		switch (base_type(dst_reg->type)) {
 		case PTR_TO_MEM:
@@ -9547,7 +9579,6 @@ static int check_ld_imm(struct bpf_verifier_env *env, struct bpf_insn *insn)
 	}
 
 	map = env->used_maps[aux->map_index];
-	mark_reg_known_zero(env, regs, insn->dst_reg);
 	dst_reg->map_ptr = map;
 
 	if (insn->src_reg == BPF_PSEUDO_MAP_VALUE ||
@@ -9651,7 +9682,7 @@ static int check_ld_abs(struct bpf_verifier_env *env, struct bpf_insn *insn)
 			return err;
 	}
 
-	err = check_ctx_reg(env, &regs[ctx_reg], ctx_reg);
+	err = check_ptr_off_reg(env, &regs[ctx_reg], ctx_reg);
 	if (err < 0)
 		return err;
 

lib/ref_tracker.c

@@ -69,9 +69,12 @@ int ref_tracker_alloc(struct ref_tracker_dir *dir,
 	unsigned long entries[REF_TRACKER_STACK_ENTRIES];
 	struct ref_tracker *tracker;
 	unsigned int nr_entries;
+	gfp_t gfp_mask = gfp;
 	unsigned long flags;
 
-	*trackerp = tracker = kzalloc(sizeof(*tracker), gfp | __GFP_NOFAIL);
+	if (gfp & __GFP_DIRECT_RECLAIM)
+		gfp_mask |= __GFP_NOFAIL;
+	*trackerp = tracker = kzalloc(sizeof(*tracker), gfp_mask);
 	if (unlikely(!tracker)) {
 		pr_err_once("memory allocation failure, unreliable refcount tracker.\n");
 		refcount_inc(&dir->untracked);

net/bridge/br_if.c

@@ -615,6 +615,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev,
 	err = dev_set_allmulti(dev, 1);
 	if (err) {
 		br_multicast_del_port(p);
+		dev_put_track(dev, &p->dev_tracker);
 		kfree(p);	/* kobject not yet init'd, manually free */
 		goto err1;
 	}
@@ -724,10 +725,10 @@ err3:
 	sysfs_remove_link(br->ifobj, p->dev->name);
 err2:
 	br_multicast_del_port(p);
+	dev_put_track(dev, &p->dev_tracker);
 	kobject_put(&p->kobj);
 	dev_set_allmulti(dev, -1);
 err1:
-	dev_put(dev);
 	return err;
 }
 

net/core/dev.c

@@ -8981,6 +8981,12 @@ static int bpf_xdp_link_update(struct bpf_link *link, struct bpf_prog *new_prog,
 		goto out_unlock;
 	}
 	old_prog = link->prog;
+	if (old_prog->type != new_prog->type ||
+	    old_prog->expected_attach_type != new_prog->expected_attach_type) {
+		err = -EINVAL;
+		goto out_unlock;
+	}
+
 	if (old_prog == new_prog) {
 		/* no-op, don't disturb drivers */
 		bpf_prog_put(new_prog);

net/core/net_namespace.c

@@ -164,8 +164,10 @@ static void ops_exit_list(const struct pernet_operations *ops,
 {
 	struct net *net;
 	if (ops->exit) {
-		list_for_each_entry(net, net_exit_list, exit_list)
+		list_for_each_entry(net, net_exit_list, exit_list) {
 			ops->exit(net);
+			cond_resched();
+		}
 	}
 	if (ops->exit_batch)
 		ops->exit_batch(net_exit_list);

net/core/of_net.c

@@ -61,7 +61,7 @@ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
 {
 	struct platform_device *pdev = of_find_device_by_node(np);
 	struct nvmem_cell *cell;
-	const void *buf;
+	const void *mac;
 	size_t len;
 	int ret;
 
@@ -78,32 +78,21 @@ static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr)
 	if (IS_ERR(cell))
 		return PTR_ERR(cell);
 
-	buf = nvmem_cell_read(cell, &len);
+	mac = nvmem_cell_read(cell, &len);
 	nvmem_cell_put(cell);
 
-	if (IS_ERR(buf))
+	if (IS_ERR(mac))
-		return PTR_ERR(buf);
+		return PTR_ERR(mac);
 
-	ret = 0;
+	if (len != ETH_ALEN || !is_valid_ether_addr(mac)) {
-	if (len == ETH_ALEN) {
+		kfree(mac);
-		if (is_valid_ether_addr(buf))
+		return -EINVAL;
-			memcpy(addr, buf, ETH_ALEN);
-		else
-			ret = -EINVAL;
-	} else if (len == 3 * ETH_ALEN - 1) {
-		u8 mac[ETH_ALEN];
-
-		if (mac_pton(buf, mac))
-			memcpy(addr, mac, ETH_ALEN);
-		else
-			ret = -EINVAL;
-	} else {
-		ret = -EINVAL;
 	}
 
-	kfree(buf);
+	memcpy(addr, mac, ETH_ALEN);
+	kfree(mac);
 
-	return ret;
+	return 0;
 }
 
 /**

net/core/sock.c

@@ -844,6 +844,8 @@ static int sock_timestamping_bind_phc(struct sock *sk, int phc_index)
 	}
 
 	num = ethtool_get_phc_vclocks(dev, &vclock_index);
+	dev_put(dev);
+
 	for (i = 0; i < num; i++) {
 		if (*(vclock_index + i) == phc_index) {
 			match = true;
@@ -2047,6 +2049,9 @@ void sk_destruct(struct sock *sk)
 {
 	bool use_call_rcu = sock_flag(sk, SOCK_RCU_FREE);
 
+	WARN_ON_ONCE(!llist_empty(&sk->defer_list));
+	sk_defer_free_flush(sk);
+
 	if (rcu_access_pointer(sk->sk_reuseport_cb)) {
 		reuseport_detach_sock(sk);
 		use_call_rcu = true;

net/ipv4/fib_semantics.c

@@ -29,6 +29,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/netlink.h>
+#include <linux/hash.h>
 
 #include <net/arp.h>
 #include <net/ip.h>
@@ -51,6 +52,7 @@ static DEFINE_SPINLOCK(fib_info_lock);
 static struct hlist_head *fib_info_hash;
 static struct hlist_head *fib_info_laddrhash;
 static unsigned int fib_info_hash_size;
+static unsigned int fib_info_hash_bits;
 static unsigned int fib_info_cnt;
 
 #define DEVINDEX_HASHBITS 8
@@ -249,7 +251,6 @@ void free_fib_info(struct fib_info *fi)
 		pr_warn("Freeing alive fib_info %p\n", fi);
 		return;
 	}
-	fib_info_cnt--;
 
 	call_rcu(&fi->rcu, free_fib_info_rcu);
 }
@@ -260,6 +261,10 @@ void fib_release_info(struct fib_info *fi)
 	spin_lock_bh(&fib_info_lock);
 	if (fi && refcount_dec_and_test(&fi->fib_treeref)) {
 		hlist_del(&fi->fib_hash);
+
+		/* Paired with READ_ONCE() in fib_create_info(). */
+		WRITE_ONCE(fib_info_cnt, fib_info_cnt - 1);
+
 		if (fi->fib_prefsrc)
 			hlist_del(&fi->fib_lhash);
 		if (fi->nh) {
@@ -316,11 +321,15 @@ static inline int nh_comp(struct fib_info *fi, struct fib_info *ofi)
 
 static inline unsigned int fib_devindex_hashfn(unsigned int val)
 {
-	unsigned int mask = DEVINDEX_HASHSIZE - 1;
+	return hash_32(val, DEVINDEX_HASHBITS);
+}
 
-	return (val ^
+static struct hlist_head *
-		(val >> DEVINDEX_HASHBITS) ^
+fib_info_devhash_bucket(const struct net_device *dev)
-		(val >> (DEVINDEX_HASHBITS * 2))) & mask;
+{
+	u32 val = net_hash_mix(dev_net(dev)) ^ dev->ifindex;
+
+	return &fib_info_devhash[fib_devindex_hashfn(val)];
 }
 
 static unsigned int fib_info_hashfn_1(int init_val, u8 protocol, u8 scope,
@@ -430,12 +439,11 @@ int ip_fib_check_default(__be32 gw, struct net_device *dev)
 {
 	struct hlist_head *head;
 	struct fib_nh *nh;
-	unsigned int hash;
 
 	spin_lock(&fib_info_lock);
 
-	hash = fib_devindex_hashfn(dev->ifindex);
+	head = fib_info_devhash_bucket(dev);
-	head = &fib_info_devhash[hash];
+
 	hlist_for_each_entry(nh, head, nh_hash) {
 		if (nh->fib_nh_dev == dev &&
 		    nh->fib_nh_gw4 == gw &&
@@ -1240,13 +1248,13 @@ int fib_check_nh(struct net *net, struct fib_nh *nh, u32 table, u8 scope,
 	return err;
 }
 
-static inline unsigned int fib_laddr_hashfn(__be32 val)
+static struct hlist_head *
+fib_info_laddrhash_bucket(const struct net *net, __be32 val)
 {
-	unsigned int mask = (fib_info_hash_size - 1);
+	u32 slot = hash_32(net_hash_mix(net) ^ (__force u32)val,
+			   fib_info_hash_bits);
 
-	return ((__force u32)val ^
+	return &fib_info_laddrhash[slot];
-		((__force u32)val >> 7) ^
-		((__force u32)val >> 14)) & mask;
 }
 
 static struct hlist_head *fib_info_hash_alloc(int bytes)
@@ -1282,6 +1290,7 @@ static void fib_info_hash_move(struct hlist_head *new_info_hash,
 	old_info_hash = fib_info_hash;
 	old_laddrhash = fib_info_laddrhash;
 	fib_info_hash_size = new_size;
+	fib_info_hash_bits = ilog2(new_size);
 
 	for (i = 0; i < old_size; i++) {
 		struct hlist_head *head = &fib_info_hash[i];
@@ -1299,21 +1308,20 @@ static void fib_info_hash_move(struct hlist_head *new_info_hash,
 	}
 	fib_info_hash = new_info_hash;
 
+	fib_info_laddrhash = new_laddrhash;
 	for (i = 0; i < old_size; i++) {
-		struct hlist_head *lhead = &fib_info_laddrhash[i];
+		struct hlist_head *lhead = &old_laddrhash[i];
 		struct hlist_node *n;
 		struct fib_info *fi;
 
 		hlist_for_each_entry_safe(fi, n, lhead, fib_lhash) {
 			struct hlist_head *ldest;
-			unsigned int new_hash;
 
-			new_hash = fib_laddr_hashfn(fi->fib_prefsrc);
+			ldest = fib_info_laddrhash_bucket(fi->fib_net,
-			ldest = &new_laddrhash[new_hash];
+							  fi->fib_prefsrc);
 			hlist_add_head(&fi->fib_lhash, ldest);
 		}
 	}
-	fib_info_laddrhash = new_laddrhash;
 
 	spin_unlock_bh(&fib_info_lock);
 
@@ -1430,7 +1438,9 @@ struct fib_info *fib_create_info(struct fib_config *cfg,
 #endif
 
 	err = -ENOBUFS;
-	if (fib_info_cnt >= fib_info_hash_size) {
+
+	/* Paired with WRITE_ONCE() in fib_release_info() */
+	if (READ_ONCE(fib_info_cnt) >= fib_info_hash_size) {
 		unsigned int new_size = fib_info_hash_size << 1;
 		struct hlist_head *new_info_hash;
 		struct hlist_head *new_laddrhash;
@@ -1462,7 +1472,6 @@ struct fib_info *fib_create_info(struct fib_config *cfg,
 		return ERR_PTR(err);
 	}
 
-	fib_info_cnt++;
 	fi->fib_net = net;
 	fi->fib_protocol = cfg->fc_protocol;
 	fi->fib_scope = cfg->fc_scope;
@@ -1591,12 +1600,13 @@ link_it:
 	refcount_set(&fi->fib_treeref, 1);
 	refcount_set(&fi->fib_clntref, 1);
 	spin_lock_bh(&fib_info_lock);
+	fib_info_cnt++;
 	hlist_add_head(&fi->fib_hash,
 		       &fib_info_hash[fib_info_hashfn(fi)]);
 	if (fi->fib_prefsrc) {
 		struct hlist_head *head;
 
-		head = &fib_info_laddrhash[fib_laddr_hashfn(fi->fib_prefsrc)];
+		head = fib_info_laddrhash_bucket(net, fi->fib_prefsrc);
 		hlist_add_head(&fi->fib_lhash, head);
 	}
 	if (fi->nh) {
@@ -1604,12 +1614,10 @@ link_it:
 	} else {
 		change_nexthops(fi) {
 			struct hlist_head *head;
-			unsigned int hash;
 
 			if (!nexthop_nh->fib_nh_dev)
 				continue;
-			hash = fib_devindex_hashfn(nexthop_nh->fib_nh_dev->ifindex);
+			head = fib_info_devhash_bucket(nexthop_nh->fib_nh_dev);
-			head = &fib_info_devhash[hash];
 			hlist_add_head(&nexthop_nh->nh_hash, head);
 		} endfor_nexthops(fi)
 	}
@@ -1870,16 +1878,16 @@ nla_put_failure:
  */
 int fib_sync_down_addr(struct net_device *dev, __be32 local)
 {
-	int ret = 0;
-	unsigned int hash = fib_laddr_hashfn(local);
-	struct hlist_head *head = &fib_info_laddrhash[hash];
 	int tb_id = l3mdev_fib_table(dev) ? : RT_TABLE_MAIN;
 	struct net *net = dev_net(dev);
+	struct hlist_head *head;
 	struct fib_info *fi;
+	int ret = 0;
 
 	if (!fib_info_laddrhash || local == 0)
 		return 0;
 
+	head = fib_info_laddrhash_bucket(net, local);
 	hlist_for_each_entry(fi, head, fib_lhash) {
 		if (!net_eq(fi->fib_net, net) ||
 		    fi->fib_tb_id != tb_id)
@@ -1961,8 +1969,7 @@ void fib_nhc_update_mtu(struct fib_nh_common *nhc, u32 new, u32 orig)
 
 void fib_sync_mtu(struct net_device *dev, u32 orig_mtu)
 {
-	unsigned int hash = fib_devindex_hashfn(dev->ifindex);
+	struct hlist_head *head = fib_info_devhash_bucket(dev);
-	struct hlist_head *head = &fib_info_devhash[hash];
 	struct fib_nh *nh;
 
 	hlist_for_each_entry(nh, head, nh_hash) {
@@ -1981,12 +1988,11 @@ void fib_sync_mtu(struct net_device *dev, u32 orig_mtu)
  */
 int fib_sync_down_dev(struct net_device *dev, unsigned long event, bool force)
 {
-	int ret = 0;
+	struct hlist_head *head = fib_info_devhash_bucket(dev);
-	int scope = RT_SCOPE_NOWHERE;
 	struct fib_info *prev_fi = NULL;
-	unsigned int hash = fib_devindex_hashfn(dev->ifindex);
+	int scope = RT_SCOPE_NOWHERE;
-	struct hlist_head *head = &fib_info_devhash[hash];
 	struct fib_nh *nh;
+	int ret = 0;
 
 	if (force)
 		scope = -1;
@@ -2131,7 +2137,6 @@ out:
 int fib_sync_up(struct net_device *dev, unsigned char nh_flags)
 {
 	struct fib_info *prev_fi;
-	unsigned int hash;
 	struct hlist_head *head;
 	struct fib_nh *nh;
 	int ret;
@@ -2147,8 +2152,7 @@ int fib_sync_up(struct net_device *dev, unsigned char nh_flags)
 	}
 
 	prev_fi = NULL;
-	hash = fib_devindex_hashfn(dev->ifindex);
+	head = fib_info_devhash_bucket(dev);
-	head = &fib_info_devhash[hash];
 	ret = 0;
 
 	hlist_for_each_entry(nh, head, nh_hash) {

net/ipv4/inet_fragment.c

@@ -235,9 +235,9 @@ void inet_frag_kill(struct inet_frag_queue *fq)
 		/* The RCU read lock provides a memory barrier
 		 * guaranteeing that if fqdir->dead is false then
 		 * the hash table destruction will not start until
-		 * after we unlock.  Paired with inet_frags_exit_net().
+		 * after we unlock.  Paired with fqdir_pre_exit().
 		 */
-		if (!fqdir->dead) {
+		if (!READ_ONCE(fqdir->dead)) {
 			rhashtable_remove_fast(&fqdir->rhashtable, &fq->node,
 					       fqdir->f->rhash_params);
 			refcount_dec(&fq->refcnt);
@@ -352,9 +352,11 @@ static struct inet_frag_queue *inet_frag_create(struct fqdir *fqdir,
 /* TODO : call from rcu_read_lock() and no longer use refcount_inc_not_zero() */
 struct inet_frag_queue *inet_frag_find(struct fqdir *fqdir, void *key)
 {
+	/* This pairs with WRITE_ONCE() in fqdir_pre_exit(). */
+	long high_thresh = READ_ONCE(fqdir->high_thresh);
 	struct inet_frag_queue *fq = NULL, *prev;
 
-	if (!fqdir->high_thresh || frag_mem_limit(fqdir) > fqdir->high_thresh)
+	if (!high_thresh || frag_mem_limit(fqdir) > high_thresh)
 		return NULL;
 
 	rcu_read_lock();

net/ipv4/ip_fragment.c

@@ -144,7 +144,8 @@ static void ip_expire(struct timer_list *t)
 
 	rcu_read_lock();
 
-	if (qp->q.fqdir->dead)
+	/* Paired with WRITE_ONCE() in fqdir_pre_exit(). */
+	if (READ_ONCE(qp->q.fqdir->dead))
 		goto out_rcu_unlock;
 
 	spin_lock(&qp->q.lock);

net/ipv4/ip_gre.c

@@ -604,8 +604,9 @@ static int gre_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
 
 	key = &info->key;
 	ip_tunnel_init_flow(&fl4, IPPROTO_GRE, key->u.ipv4.dst, key->u.ipv4.src,
-			    tunnel_id_to_key32(key->tun_id), key->tos, 0,
+			    tunnel_id_to_key32(key->tun_id),
-			    skb->mark, skb_get_hash(skb));
+			    key->tos & ~INET_ECN_MASK, 0, skb->mark,
+			    skb_get_hash(skb));
 	rt = ip_route_output_key(dev_net(dev), &fl4);
 	if (IS_ERR(rt))
 		return PTR_ERR(rt);

net/ipv6/sit.c

@@ -956,7 +956,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 		dst_cache_set_ip4(&tunnel->dst_cache, &rt->dst, fl4.saddr);
 	}
 
-	if (rt->rt_type != RTN_UNICAST) {
+	if (rt->rt_type != RTN_UNICAST && rt->rt_type != RTN_LOCAL) {
 		ip_rt_put(rt);
 		dev->stats.tx_carrier_errors++;
 		goto tx_error_icmp;

net/mctp/test/route-test.c

@@ -285,7 +285,7 @@ static void __mctp_route_test_init(struct kunit *test,
 				   struct mctp_test_route **rtp,
 				   struct socket **sockp)
 {
-	struct sockaddr_mctp addr;
+	struct sockaddr_mctp addr = {0};
 	struct mctp_test_route *rt;
 	struct mctp_test_dev *dev;
 	struct socket *sock;

net/netfilter/nft_connlimit.c

@@ -206,7 +206,7 @@ static int nft_connlimit_clone(struct nft_expr *dst, const struct nft_expr *src)
 	struct nft_connlimit *priv_src = nft_expr_priv(src);
 
 	priv_dst->list = kmalloc(sizeof(*priv_dst->list), GFP_ATOMIC);
-	if (priv_dst->list)
+	if (!priv_dst->list)
 		return -ENOMEM;
 
 	nf_conncount_list_init(priv_dst->list);

net/netfilter/nft_last.c

@@ -106,7 +106,7 @@ static int nft_last_clone(struct nft_expr *dst, const struct nft_expr *src)
 	struct nft_last_priv *priv_dst = nft_expr_priv(dst);
 
 	priv_dst->last = kzalloc(sizeof(*priv_dst->last), GFP_ATOMIC);
-	if (priv_dst->last)
+	if (!priv_dst->last)
 		return -ENOMEM;
 
 	return 0;

net/netfilter/nft_limit.c

@@ -145,7 +145,7 @@ static int nft_limit_clone(struct nft_limit_priv *priv_dst,
 	priv_dst->invert = priv_src->invert;
 
 	priv_dst->limit = kmalloc(sizeof(*priv_dst->limit), GFP_ATOMIC);
-	if (priv_dst->limit)
+	if (!priv_dst->limit)
 		return -ENOMEM;
 
 	spin_lock_init(&priv_dst->limit->lock);

net/netfilter/nft_quota.c

@@ -237,7 +237,7 @@ static int nft_quota_clone(struct nft_expr *dst, const struct nft_expr *src)
 	struct nft_quota *priv_dst = nft_expr_priv(dst);
 
 	priv_dst->consumed = kmalloc(sizeof(*priv_dst->consumed), GFP_ATOMIC);
-	if (priv_dst->consumed)
+	if (!priv_dst->consumed)
 		return -ENOMEM;
 
 	atomic64_set(priv_dst->consumed, 0);

net/nfc/llcp_sock.c

@@ -789,6 +789,11 @@ static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
 
 	lock_sock(sk);
 
+	if (!llcp_sock->local) {
+		release_sock(sk);
+		return -ENODEV;
+	}
+
 	if (sk->sk_type == SOCK_DGRAM) {
 		DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
 				 msg->msg_name);

net/sched/sch_api.c

@@ -1062,7 +1062,7 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
 
 		qdisc_offload_graft_root(dev, new, old, extack);
 
-		if (new && new->ops->attach)
+		if (new && new->ops->attach && !ingress)
 			goto skip;
 
 		for (i = 0; i < num_q; i++) {

net/sched/sch_generic.c

@@ -1529,6 +1529,7 @@ void psched_ratecfg_precompute(struct psched_ratecfg *r,
 {
 	memset(r, 0, sizeof(*r));
 	r->overhead = conf->overhead;
+	r->mpu = conf->mpu;
 	r->rate_bytes_ps = max_t(u64, conf->rate, rate64);
 	r->linklayer = (conf->linklayer & TC_LINKLAYER_MASK);
 	psched_ratecfg_precompute__(r->rate_bytes_ps, &r->mult, &r->shift);

net/smc/af_smc.c

@@ -634,9 +634,13 @@ static void smc_conn_abort(struct smc_sock *smc, int local_first)
 {
 	struct smc_connection *conn = &smc->conn;
 	struct smc_link_group *lgr = conn->lgr;
+	bool lgr_valid = false;
+
+	if (smc_conn_lgr_valid(conn))
+		lgr_valid = true;
 
 	smc_conn_free(conn);
-	if (local_first)
+	if (local_first && lgr_valid)
 		smc_lgr_cleanup_early(lgr);
 }
 

net/smc/smc.h

@@ -221,6 +221,7 @@ struct smc_connection {
 						 */
 	u64			peer_token;	/* SMC-D token of peer */
 	u8			killed : 1;	/* abnormal termination */
+	u8			freed : 1;	/* normal termiation */
 	u8			out_of_sync : 1; /* out of sync with peer */
 };
 

net/smc/smc_cdc.c

@@ -197,7 +197,8 @@ int smc_cdc_get_slot_and_msg_send(struct smc_connection *conn)
 {
 	int rc;
 
-	if (!conn->lgr || (conn->lgr->is_smcd && conn->lgr->peer_shutdown))
+	if (!smc_conn_lgr_valid(conn) ||
+	    (conn->lgr->is_smcd && conn->lgr->peer_shutdown))
 		return -EPIPE;
 
 	if (conn->lgr->is_smcd) {

net/smc/smc_clc.c

@@ -774,7 +774,7 @@ int smc_clc_send_decline(struct smc_sock *smc, u32 peer_diag_info, u8 version)
 	dclc.os_type = version == SMC_V1 ? 0 : SMC_CLC_OS_LINUX;
 	dclc.hdr.typev2 = (peer_diag_info == SMC_CLC_DECL_SYNCERR) ?
 						SMC_FIRST_CONTACT_MASK : 0;
-	if ((!smc->conn.lgr || !smc->conn.lgr->is_smcd) &&
+	if ((!smc_conn_lgr_valid(&smc->conn) || !smc->conn.lgr->is_smcd) &&
 	    smc_ib_is_valid_local_systemid())
 		memcpy(dclc.id_for_peer, local_systemid,
 		       sizeof(local_systemid));

net/smc/smc_core.c

@@ -211,14 +211,13 @@ static void smc_lgr_unregister_conn(struct smc_connection *conn)
 {
 	struct smc_link_group *lgr = conn->lgr;
 
-	if (!lgr)
+	if (!smc_conn_lgr_valid(conn))
 		return;
 	write_lock_bh(&lgr->conns_lock);
 	if (conn->alert_token_local) {
 		__smc_lgr_unregister_conn(conn);
 	}
 	write_unlock_bh(&lgr->conns_lock);
-	conn->lgr = NULL;
 }
 
 int smc_nl_get_sys_info(struct sk_buff *skb, struct netlink_callback *cb)
@@ -749,9 +748,12 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
 	}
 	get_device(&lnk->smcibdev->ibdev->dev);
 	atomic_inc(&lnk->smcibdev->lnk_cnt);
+	refcount_set(&lnk->refcnt, 1); /* link refcnt is set to 1 */
+	lnk->clearing = 0;
 	lnk->path_mtu = lnk->smcibdev->pattr[lnk->ibport - 1].active_mtu;
 	lnk->link_id = smcr_next_link_id(lgr);
 	lnk->lgr = lgr;
+	smc_lgr_hold(lgr); /* lgr_put in smcr_link_clear() */
 	lnk->link_idx = link_idx;
 	smc_ibdev_cnt_inc(lnk);
 	smcr_copy_dev_info_to_link(lnk);
@@ -806,6 +808,7 @@ out:
 	lnk->state = SMC_LNK_UNUSED;
 	if (!atomic_dec_return(&smcibdev->lnk_cnt))
 		wake_up(&smcibdev->lnks_deleted);
+	smc_lgr_put(lgr); /* lgr_hold above */
 	return rc;
 }
 
@@ -844,6 +847,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
 	lgr->terminating = 0;
 	lgr->freeing = 0;
 	lgr->vlan_id = ini->vlan_id;
+	refcount_set(&lgr->refcnt, 1); /* set lgr refcnt to 1 */
 	mutex_init(&lgr->sndbufs_lock);
 	mutex_init(&lgr->rmbs_lock);
 	rwlock_init(&lgr->conns_lock);
@@ -996,8 +1000,12 @@ void smc_switch_link_and_count(struct smc_connection *conn,
 			       struct smc_link *to_lnk)
 {
 	atomic_dec(&conn->lnk->conn_cnt);
+	/* link_hold in smc_conn_create() */
+	smcr_link_put(conn->lnk);
 	conn->lnk = to_lnk;
 	atomic_inc(&conn->lnk->conn_cnt);
+	/* link_put in smc_conn_free() */
+	smcr_link_hold(conn->lnk);
 }
 
 struct smc_link *smc_switch_conns(struct smc_link_group *lgr,
@@ -1130,8 +1138,19 @@ void smc_conn_free(struct smc_connection *conn)
 {
 	struct smc_link_group *lgr = conn->lgr;
 
-	if (!lgr)
+	if (!lgr || conn->freed)
+		/* Connection has never been registered in a
+		 * link group, or has already been freed.
+		 */
 		return;
+
+	conn->freed = 1;
+	if (!smc_conn_lgr_valid(conn))
+		/* Connection has already unregistered from
+		 * link group.
+		 */
+		goto lgr_put;
+
 	if (lgr->is_smcd) {
 		if (!list_empty(&lgr->list))
 			smc_ism_unset_conn(conn);
@@ -1148,6 +1167,10 @@ void smc_conn_free(struct smc_connection *conn)
 
 	if (!lgr->conns_num)
 		smc_lgr_schedule_free_work(lgr);
+lgr_put:
+	if (!lgr->is_smcd)
+		smcr_link_put(conn->lnk); /* link_hold in smc_conn_create() */
+	smc_lgr_put(lgr); /* lgr_hold in smc_conn_create() */
 }
 
 /* unregister a link from a buf_desc */
@@ -1203,21 +1226,11 @@ static void smcr_rtoken_clear_link(struct smc_link *lnk)
 	}
 }
 
-/* must be called under lgr->llc_conf_mutex lock */
+static void __smcr_link_clear(struct smc_link *lnk)
-void smcr_link_clear(struct smc_link *lnk, bool log)
 {
+	struct smc_link_group *lgr = lnk->lgr;
 	struct smc_ib_device *smcibdev;
 
-	if (!lnk->lgr || lnk->state == SMC_LNK_UNUSED)
-		return;
-	lnk->peer_qpn = 0;
-	smc_llc_link_clear(lnk, log);
-	smcr_buf_unmap_lgr(lnk);
-	smcr_rtoken_clear_link(lnk);
-	smc_ib_modify_qp_error(lnk);
-	smc_wr_free_link(lnk);
-	smc_ib_destroy_queue_pair(lnk);
-	smc_ib_dealloc_protection_domain(lnk);
 	smc_wr_free_link_mem(lnk);
 	smc_ibdev_cnt_dec(lnk);
 	put_device(&lnk->smcibdev->ibdev->dev);
@@ -1226,6 +1239,36 @@ void smcr_link_clear(struct smc_link *lnk, bool log)
 	lnk->state = SMC_LNK_UNUSED;
 	if (!atomic_dec_return(&smcibdev->lnk_cnt))
 		wake_up(&smcibdev->lnks_deleted);
+	smc_lgr_put(lgr); /* lgr_hold in smcr_link_init() */
+}
+
+/* must be called under lgr->llc_conf_mutex lock */
+void smcr_link_clear(struct smc_link *lnk, bool log)
+{
+	if (!lnk->lgr || lnk->clearing ||
+	    lnk->state == SMC_LNK_UNUSED)
+		return;
+	lnk->clearing = 1;
+	lnk->peer_qpn = 0;
+	smc_llc_link_clear(lnk, log);
+	smcr_buf_unmap_lgr(lnk);
+	smcr_rtoken_clear_link(lnk);
+	smc_ib_modify_qp_error(lnk);
+	smc_wr_free_link(lnk);
+	smc_ib_destroy_queue_pair(lnk);
+	smc_ib_dealloc_protection_domain(lnk);
+	smcr_link_put(lnk); /* theoretically last link_put */
+}
+
+void smcr_link_hold(struct smc_link *lnk)
+{
+	refcount_inc(&lnk->refcnt);
+}
+
+void smcr_link_put(struct smc_link *lnk)
+{
+	if (refcount_dec_and_test(&lnk->refcnt))
+		__smcr_link_clear(lnk);
 }
 
 static void smcr_buf_free(struct smc_link_group *lgr, bool is_rmb,
@@ -1290,6 +1333,21 @@ static void smc_lgr_free_bufs(struct smc_link_group *lgr)
 	__smc_lgr_free_bufs(lgr, true);
 }
 
+/* won't be freed until no one accesses to lgr anymore */
+static void __smc_lgr_free(struct smc_link_group *lgr)
+{
+	smc_lgr_free_bufs(lgr);
+	if (lgr->is_smcd) {
+		if (!atomic_dec_return(&lgr->smcd->lgr_cnt))
+			wake_up(&lgr->smcd->lgrs_deleted);
+	} else {
+		smc_wr_free_lgr_mem(lgr);
+		if (!atomic_dec_return(&lgr_cnt))
+			wake_up(&lgrs_deleted);
+	}
+	kfree(lgr);
+}
+
 /* remove a link group */
 static void smc_lgr_free(struct smc_link_group *lgr)
 {
@@ -1305,19 +1363,23 @@ static void smc_lgr_free(struct smc_link_group *lgr)
 		smc_llc_lgr_clear(lgr);
 	}
 
-	smc_lgr_free_bufs(lgr);
 	destroy_workqueue(lgr->tx_wq);
 	if (lgr->is_smcd) {
 		smc_ism_put_vlan(lgr->smcd, lgr->vlan_id);
 		put_device(&lgr->smcd->dev);
-		if (!atomic_dec_return(&lgr->smcd->lgr_cnt))
-			wake_up(&lgr->smcd->lgrs_deleted);
-	} else {
-		smc_wr_free_lgr_mem(lgr);
-		if (!atomic_dec_return(&lgr_cnt))
-			wake_up(&lgrs_deleted);
 	}
-	kfree(lgr);
+	smc_lgr_put(lgr); /* theoretically last lgr_put */
+}
+
+void smc_lgr_hold(struct smc_link_group *lgr)
+{
+	refcount_inc(&lgr->refcnt);
+}
+
+void smc_lgr_put(struct smc_link_group *lgr)
+{
+	if (refcount_dec_and_test(&lgr->refcnt))
+		__smc_lgr_free(lgr);
 }
 
 static void smc_sk_wake_ups(struct smc_sock *smc)
@@ -1469,16 +1531,11 @@ void smc_smcd_terminate_all(struct smcd_dev *smcd)
 /* Called when an SMCR device is removed or the smc module is unloaded.
  * If smcibdev is given, all SMCR link groups using this device are terminated.
  * If smcibdev is NULL, all SMCR link groups are terminated.
- *
- * We must wait here for QPs been destroyed before we destroy the CQs,
- * or we won't received any CQEs and cdc_pend_tx_wr cannot reach 0 thus
- * smc_sock cannot be released.
  */
 void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
 {
 	struct smc_link_group *lgr, *lg;
 	LIST_HEAD(lgr_free_list);
-	LIST_HEAD(lgr_linkdown_list);
 	int i;
 
 	spin_lock_bh(&smc_lgr_list.lock);
@@ -1490,7 +1547,7 @@ void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
 		list_for_each_entry_safe(lgr, lg, &smc_lgr_list.list, list) {
 			for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
 				if (lgr->lnk[i].smcibdev == smcibdev)
-					list_move_tail(&lgr->list, &lgr_linkdown_list);
+					smcr_link_down_cond_sched(&lgr->lnk[i]);
 			}
 		}
 	}
@@ -1502,16 +1559,6 @@ void smc_smcr_terminate_all(struct smc_ib_device *smcibdev)
 		__smc_lgr_terminate(lgr, false);
 	}
 
-	list_for_each_entry_safe(lgr, lg, &lgr_linkdown_list, list) {
-		for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
-			if (lgr->lnk[i].smcibdev == smcibdev) {
-				mutex_lock(&lgr->llc_conf_mutex);
-				smcr_link_down_cond(&lgr->lnk[i]);
-				mutex_unlock(&lgr->llc_conf_mutex);
-			}
-		}
-	}
-
 	if (smcibdev) {
 		if (atomic_read(&smcibdev->lnk_cnt))
 			wait_event(smcibdev->lnks_deleted,
@@ -1856,6 +1903,10 @@ create:
 			goto out;
 		}
 	}
+	smc_lgr_hold(conn->lgr); /* lgr_put in smc_conn_free() */
+	if (!conn->lgr->is_smcd)
+		smcr_link_hold(conn->lnk); /* link_put in smc_conn_free() */
+	conn->freed = 0;
 	conn->local_tx_ctrl.common.type = SMC_CDC_MSG_TYPE;
 	conn->local_tx_ctrl.len = SMC_WR_TX_SIZE;
 	conn->urg_state = SMC_URG_READ;
@@ -2240,14 +2291,16 @@ static int __smc_buf_create(struct smc_sock *smc, bool is_smcd, bool is_rmb)
 
 void smc_sndbuf_sync_sg_for_cpu(struct smc_connection *conn)
 {
-	if (!conn->lgr || conn->lgr->is_smcd || !smc_link_active(conn->lnk))
+	if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd ||
+	    !smc_link_active(conn->lnk))
 		return;
 	smc_ib_sync_sg_for_cpu(conn->lnk, conn->sndbuf_desc, DMA_TO_DEVICE);
 }
 
 void smc_sndbuf_sync_sg_for_device(struct smc_connection *conn)
 {
-	if (!conn->lgr || conn->lgr->is_smcd || !smc_link_active(conn->lnk))
+	if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd ||
+	    !smc_link_active(conn->lnk))
 		return;
 	smc_ib_sync_sg_for_device(conn->lnk, conn->sndbuf_desc, DMA_TO_DEVICE);
 }
@@ -2256,7 +2309,7 @@ void smc_rmb_sync_sg_for_cpu(struct smc_connection *conn)
 {
 	int i;
 
-	if (!conn->lgr || conn->lgr->is_smcd)
+	if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd)
 		return;
 	for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
 		if (!smc_link_active(&conn->lgr->lnk[i]))
@@ -2270,7 +2323,7 @@ void smc_rmb_sync_sg_for_device(struct smc_connection *conn)
 {
 	int i;
 
-	if (!conn->lgr || conn->lgr->is_smcd)
+	if (!smc_conn_lgr_valid(conn) || conn->lgr->is_smcd)
 		return;
 	for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {
 		if (!smc_link_active(&conn->lgr->lnk[i]))

net/smc/smc_core.h

@@ -137,6 +137,8 @@ struct smc_link {
 	u8			peer_link_uid[SMC_LGR_ID_SIZE]; /* peer uid */
 	u8			link_idx;	/* index in lgr link array */
 	u8			link_is_asym;	/* is link asymmetric? */
+	u8			clearing : 1;	/* link is being cleared */
+	refcount_t		refcnt;		/* link reference count */
 	struct smc_link_group	*lgr;		/* parent link group */
 	struct work_struct	link_down_wrk;	/* wrk to bring link down */
 	char			ibname[IB_DEVICE_NAME_MAX]; /* ib device name */
@@ -249,6 +251,7 @@ struct smc_link_group {
 	u8			terminating : 1;/* lgr is terminating */
 	u8			freeing : 1;	/* lgr is being freed */
 
+	refcount_t		refcnt;		/* lgr reference count */
 	bool			is_smcd;	/* SMC-R or SMC-D */
 	u8			smc_version;
 	u8			negotiated_eid[SMC_MAX_EID_LEN];
@@ -409,6 +412,11 @@ static inline struct smc_connection *smc_lgr_find_conn(
 	return res;
 }
 
+static inline bool smc_conn_lgr_valid(struct smc_connection *conn)
+{
+	return conn->lgr && conn->alert_token_local;
+}
+
 /*
  * Returns true if the specified link is usable.
  *
@@ -487,6 +495,8 @@ struct smc_clc_msg_accept_confirm;
 
 void smc_lgr_cleanup_early(struct smc_link_group *lgr);
 void smc_lgr_terminate_sched(struct smc_link_group *lgr);
+void smc_lgr_hold(struct smc_link_group *lgr);
+void smc_lgr_put(struct smc_link_group *lgr);
 void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport);
 void smcr_port_err(struct smc_ib_device *smcibdev, u8 ibport);
 void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid,
@@ -518,6 +528,8 @@ void smc_core_exit(void);
 int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
 		   u8 link_idx, struct smc_init_info *ini);
 void smcr_link_clear(struct smc_link *lnk, bool log);
+void smcr_link_hold(struct smc_link *lnk);
+void smcr_link_put(struct smc_link *lnk);
 void smc_switch_link_and_count(struct smc_connection *conn,
 			       struct smc_link *to_lnk);
 int smcr_buf_map_lgr(struct smc_link *lnk);

net/smc/smc_diag.c

@@ -89,7 +89,7 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
 	r->diag_state = sk->sk_state;
 	if (smc->use_fallback)
 		r->diag_mode = SMC_DIAG_MODE_FALLBACK_TCP;
-	else if (smc->conn.lgr && smc->conn.lgr->is_smcd)
+	else if (smc_conn_lgr_valid(&smc->conn) && smc->conn.lgr->is_smcd)
 		r->diag_mode = SMC_DIAG_MODE_SMCD;
 	else
 		r->diag_mode = SMC_DIAG_MODE_SMCR;
@@ -142,7 +142,7 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
 			goto errout;
 	}
 
-	if (smc->conn.lgr && !smc->conn.lgr->is_smcd &&
+	if (smc_conn_lgr_valid(&smc->conn) && !smc->conn.lgr->is_smcd &&
 	    (req->diag_ext & (1 << (SMC_DIAG_LGRINFO - 1))) &&
 	    !list_empty(&smc->conn.lgr->list)) {
 		struct smc_link *link = smc->conn.lnk;
@@ -164,7 +164,7 @@ static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb,
 		if (nla_put(skb, SMC_DIAG_LGRINFO, sizeof(linfo), &linfo) < 0)
 			goto errout;
 	}
-	if (smc->conn.lgr && smc->conn.lgr->is_smcd &&
+	if (smc_conn_lgr_valid(&smc->conn) && smc->conn.lgr->is_smcd &&
 	    (req->diag_ext & (1 << (SMC_DIAG_DMBINFO - 1))) &&
 	    !list_empty(&smc->conn.lgr->list)) {
 		struct smc_connection *conn = &smc->conn;

net/smc/smc_pnet.c

@@ -369,7 +369,8 @@ static int smc_pnet_add_eth(struct smc_pnettable *pnettable, struct net *net,
 	memcpy(new_pe->pnet_name, pnet_name, SMC_MAX_PNETID_LEN);
 	strncpy(new_pe->eth_name, eth_name, IFNAMSIZ);
 	new_pe->ndev = ndev;
-	netdev_tracker_alloc(ndev, &new_pe->dev_tracker, GFP_KERNEL);
+	if (ndev)
+		netdev_tracker_alloc(ndev, &new_pe->dev_tracker, GFP_KERNEL);
 	rc = -EEXIST;
 	new_netdev = true;
 	write_lock(&pnettable->lock);

net/smc/smc_wr.h

@@ -125,10 +125,6 @@ int smc_wr_tx_v2_send(struct smc_link *link,
 int smc_wr_tx_send_wait(struct smc_link *link, struct smc_wr_tx_pend_priv *priv,
 			unsigned long timeout);
 void smc_wr_tx_cq_handler(struct ib_cq *ib_cq, void *cq_context);
-void smc_wr_tx_dismiss_slots(struct smc_link *lnk, u8 wr_rx_hdr_type,
-			     smc_wr_tx_filter filter,
-			     smc_wr_tx_dismisser dismisser,
-			     unsigned long data);
 void smc_wr_tx_wait_no_pending_sends(struct smc_link *link);
 
 int smc_wr_rx_register_handler(struct smc_wr_rx_handler *handler);

net/tls/tls_sw.c

@@ -2059,6 +2059,7 @@ ssize_t tls_sw_splice_read(struct socket *sock,  loff_t *ppos,
 
 splice_read_end:
 	release_sock(sk);
+	sk_defer_free_flush(sk);
 	return copied ? : err;
 }
 

net/unix/garbage.c

@@ -192,8 +192,11 @@ void wait_for_unix_gc(void)
 {
 	/* If number of inflight sockets is insane,
 	 * force a garbage collect right now.
+	 * Paired with the WRITE_ONCE() in unix_inflight(),
+	 * unix_notinflight() and gc_in_progress().
 	 */
-	if (unix_tot_inflight > UNIX_INFLIGHT_TRIGGER_GC && !gc_in_progress)
+	if (READ_ONCE(unix_tot_inflight) > UNIX_INFLIGHT_TRIGGER_GC &&
+	    !READ_ONCE(gc_in_progress))
 		unix_gc();
 	wait_event(unix_gc_wait, gc_in_progress == false);
 }
@@ -213,7 +216,9 @@ void unix_gc(void)
 	if (gc_in_progress)
 		goto out;
 
-	gc_in_progress = true;
+	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
+	WRITE_ONCE(gc_in_progress, true);
+
 	/* First, select candidates for garbage collection.  Only
 	 * in-flight sockets are considered, and from those only ones
 	 * which don't have any external reference.
@@ -299,7 +304,10 @@ void unix_gc(void)
 
 	/* All candidates should have been detached by now. */
 	BUG_ON(!list_empty(&gc_candidates));
-	gc_in_progress = false;
+
+	/* Paired with READ_ONCE() in wait_for_unix_gc(). */
+	WRITE_ONCE(gc_in_progress, false);
+
 	wake_up(&unix_gc_wait);
 
  out:

net/unix/scm.c

@@ -60,7 +60,8 @@ void unix_inflight(struct user_struct *user, struct file *fp)
 		} else {
 			BUG_ON(list_empty(&u->link));
 		}
-		unix_tot_inflight++;
+		/* Paired with READ_ONCE() in wait_for_unix_gc() */
+		WRITE_ONCE(unix_tot_inflight, unix_tot_inflight + 1);
 	}
 	user->unix_inflight++;
 	spin_unlock(&unix_gc_lock);
@@ -80,7 +81,8 @@ void unix_notinflight(struct user_struct *user, struct file *fp)
 
 		if (atomic_long_dec_and_test(&u->inflight))
 			list_del_init(&u->link);
-		unix_tot_inflight--;
+		/* Paired with READ_ONCE() in wait_for_unix_gc() */
+		WRITE_ONCE(unix_tot_inflight, unix_tot_inflight - 1);
 	}
 	user->unix_inflight--;
 	spin_unlock(&unix_gc_lock);

net/xfrm/xfrm_policy.c

@@ -31,6 +31,7 @@
 #include <linux/if_tunnel.h>
 #include <net/dst.h>
 #include <net/flow.h>
+#include <net/inet_ecn.h>
 #include <net/xfrm.h>
 #include <net/ip.h>
 #include <net/gre.h>
@@ -3295,7 +3296,7 @@ decode_session4(struct sk_buff *skb, struct flowi *fl, bool reverse)
 	fl4->flowi4_proto = iph->protocol;
 	fl4->daddr = reverse ? iph->saddr : iph->daddr;
 	fl4->saddr = reverse ? iph->daddr : iph->saddr;
-	fl4->flowi4_tos = iph->tos;
+	fl4->flowi4_tos = iph->tos & ~INET_ECN_MASK;
 
 	if (!ip_is_fragment(iph)) {
 		switch (iph->protocol) {

tools/testing/selftests/bpf/prog_tests/d_path.c

@@ -10,6 +10,7 @@
 
 #include "test_d_path.skel.h"
 #include "test_d_path_check_rdonly_mem.skel.h"
+#include "test_d_path_check_types.skel.h"
 
 static int duration;
 
@@ -167,6 +168,16 @@ static void test_d_path_check_rdonly_mem(void)
 	test_d_path_check_rdonly_mem__destroy(skel);
 }
 
+static void test_d_path_check_types(void)
+{
+	struct test_d_path_check_types *skel;
+
+	skel = test_d_path_check_types__open_and_load();
+	ASSERT_ERR_PTR(skel, "unexpected_load_passing_wrong_type");
+
+	test_d_path_check_types__destroy(skel);
+}
+
 void test_d_path(void)
 {
 	if (test__start_subtest("basic"))
@@ -174,4 +185,7 @@ void test_d_path(void)
 
 	if (test__start_subtest("check_rdonly_mem"))
 		test_d_path_check_rdonly_mem();
+
+	if (test__start_subtest("check_alloc_mem"))
+		test_d_path_check_types();
 }

tools/testing/selftests/bpf/prog_tests/xdp_link.c

@@ -8,46 +8,47 @@
 
 void serial_test_xdp_link(void)
 {
-	__u32 duration = 0, id1, id2, id0 = 0, prog_fd1, prog_fd2, err;
 	DECLARE_LIBBPF_OPTS(bpf_xdp_set_link_opts, opts, .old_fd = -1);
 	struct test_xdp_link *skel1 = NULL, *skel2 = NULL;
+	__u32 id1, id2, id0 = 0, prog_fd1, prog_fd2;
 	struct bpf_link_info link_info;
 	struct bpf_prog_info prog_info;
 	struct bpf_link *link;
+	int err;
 	__u32 link_info_len = sizeof(link_info);
 	__u32 prog_info_len = sizeof(prog_info);
 
 	skel1 = test_xdp_link__open_and_load();
-	if (CHECK(!skel1, "skel_load", "skeleton open and load failed\n"))
+	if (!ASSERT_OK_PTR(skel1, "skel_load"))
 		goto cleanup;
 	prog_fd1 = bpf_program__fd(skel1->progs.xdp_handler);
 
 	skel2 = test_xdp_link__open_and_load();
-	if (CHECK(!skel2, "skel_load", "skeleton open and load failed\n"))
+	if (!ASSERT_OK_PTR(skel2, "skel_load"))
 		goto cleanup;
 	prog_fd2 = bpf_program__fd(skel2->progs.xdp_handler);
 
 	memset(&prog_info, 0, sizeof(prog_info));
 	err = bpf_obj_get_info_by_fd(prog_fd1, &prog_info, &prog_info_len);
-	if (CHECK(err, "fd_info1", "failed %d\n", -errno))
+	if (!ASSERT_OK(err, "fd_info1"))
 		goto cleanup;
 	id1 = prog_info.id;
 
 	memset(&prog_info, 0, sizeof(prog_info));
 	err = bpf_obj_get_info_by_fd(prog_fd2, &prog_info, &prog_info_len);
-	if (CHECK(err, "fd_info2", "failed %d\n", -errno))
+	if (!ASSERT_OK(err, "fd_info2"))
 		goto cleanup;
 	id2 = prog_info.id;
 
 	/* set initial prog attachment */
 	err = bpf_set_link_xdp_fd_opts(IFINDEX_LO, prog_fd1, XDP_FLAGS_REPLACE, &opts);
-	if (CHECK(err, "fd_attach", "initial prog attach failed: %d\n", err))
+	if (!ASSERT_OK(err, "fd_attach"))
 		goto cleanup;
 
 	/* validate prog ID */
 	err = bpf_get_link_xdp_id(IFINDEX_LO, &id0, 0);
-	CHECK(err || id0 != id1, "id1_check",
+	if (!ASSERT_OK(err, "id1_check_err") || !ASSERT_EQ(id0, id1, "id1_check_val"))
-	      "loaded prog id %u != id1 %u, err %d", id0, id1, err);
+		goto cleanup;
 
 	/* BPF link is not allowed to replace prog attachment */
 	link = bpf_program__attach_xdp(skel1->progs.xdp_handler, IFINDEX_LO);
@@ -62,7 +63,7 @@ void serial_test_xdp_link(void)
 	/* detach BPF program */
 	opts.old_fd = prog_fd1;
 	err = bpf_set_link_xdp_fd_opts(IFINDEX_LO, -1, XDP_FLAGS_REPLACE, &opts);
-	if (CHECK(err, "prog_detach", "failed %d\n", err))
+	if (!ASSERT_OK(err, "prog_detach"))
 		goto cleanup;
 
 	/* now BPF link should attach successfully */
@@ -73,24 +74,23 @@ void serial_test_xdp_link(void)
 
 	/* validate prog ID */
 	err = bpf_get_link_xdp_id(IFINDEX_LO, &id0, 0);
-	if (CHECK(err || id0 != id1, "id1_check",
+	if (!ASSERT_OK(err, "id1_check_err") || !ASSERT_EQ(id0, id1, "id1_check_val"))
-		  "loaded prog id %u != id1 %u, err %d", id0, id1, err))
 		goto cleanup;
 
 	/* BPF prog attach is not allowed to replace BPF link */
 	opts.old_fd = prog_fd1;
 	err = bpf_set_link_xdp_fd_opts(IFINDEX_LO, prog_fd2, XDP_FLAGS_REPLACE, &opts);
-	if (CHECK(!err, "prog_attach_fail", "unexpected success\n"))
+	if (!ASSERT_ERR(err, "prog_attach_fail"))
 		goto cleanup;
 
 	/* Can't force-update when BPF link is active */
 	err = bpf_set_link_xdp_fd(IFINDEX_LO, prog_fd2, 0);
-	if (CHECK(!err, "prog_update_fail", "unexpected success\n"))
+	if (!ASSERT_ERR(err, "prog_update_fail"))
 		goto cleanup;
 
 	/* Can't force-detach when BPF link is active */
 	err = bpf_set_link_xdp_fd(IFINDEX_LO, -1, 0);
-	if (CHECK(!err, "prog_detach_fail", "unexpected success\n"))
+	if (!ASSERT_ERR(err, "prog_detach_fail"))
 		goto cleanup;
 
 	/* BPF link is not allowed to replace another BPF link */
@@ -110,40 +110,39 @@ void serial_test_xdp_link(void)
 	skel2->links.xdp_handler = link;
 
 	err = bpf_get_link_xdp_id(IFINDEX_LO, &id0, 0);
-	if (CHECK(err || id0 != id2, "id2_check",
+	if (!ASSERT_OK(err, "id2_check_err") || !ASSERT_EQ(id0, id2, "id2_check_val"))
-		  "loaded prog id %u != id2 %u, err %d", id0, id1, err))
 		goto cleanup;
 
 	/* updating program under active BPF link works as expected */
 	err = bpf_link__update_program(link, skel1->progs.xdp_handler);
-	if (CHECK(err, "link_upd", "failed: %d\n", err))
+	if (!ASSERT_OK(err, "link_upd"))
 		goto cleanup;
 
 	memset(&link_info, 0, sizeof(link_info));
 	err = bpf_obj_get_info_by_fd(bpf_link__fd(link), &link_info, &link_info_len);
-	if (CHECK(err, "link_info", "failed: %d\n", err))
+	if (!ASSERT_OK(err, "link_info"))
 		goto cleanup;
 
-	CHECK(link_info.type != BPF_LINK_TYPE_XDP, "link_type",
+	ASSERT_EQ(link_info.type, BPF_LINK_TYPE_XDP, "link_type");
-	      "got %u != exp %u\n", link_info.type, BPF_LINK_TYPE_XDP);
+	ASSERT_EQ(link_info.prog_id, id1, "link_prog_id");
-	CHECK(link_info.prog_id != id1, "link_prog_id",
+	ASSERT_EQ(link_info.xdp.ifindex, IFINDEX_LO, "link_ifindex");
-	      "got %u != exp %u\n", link_info.prog_id, id1);
+
-	CHECK(link_info.xdp.ifindex != IFINDEX_LO, "link_ifindex",
+	/* updating program under active BPF link with different type fails */
-	      "got %u != exp %u\n", link_info.xdp.ifindex, IFINDEX_LO);
+	err = bpf_link__update_program(link, skel1->progs.tc_handler);
+	if (!ASSERT_ERR(err, "link_upd_invalid"))
+		goto cleanup;
 
 	err = bpf_link__detach(link);
-	if (CHECK(err, "link_detach", "failed %d\n", err))
+	if (!ASSERT_OK(err, "link_detach"))
 		goto cleanup;
 
 	memset(&link_info, 0, sizeof(link_info));
 	err = bpf_obj_get_info_by_fd(bpf_link__fd(link), &link_info, &link_info_len);
-	if (CHECK(err, "link_info", "failed: %d\n", err))
+
-		goto cleanup;
+	ASSERT_OK(err, "link_info");
-	CHECK(link_info.prog_id != id1, "link_prog_id",
+	ASSERT_EQ(link_info.prog_id, id1, "link_prog_id");
-	      "got %u != exp %u\n", link_info.prog_id, id1);
 	/* ifindex should be zeroed out */
-	CHECK(link_info.xdp.ifindex != 0, "link_ifindex",
+	ASSERT_EQ(link_info.xdp.ifindex, 0, "link_ifindex");
-	      "got %u != exp %u\n", link_info.xdp.ifindex, 0);
 
 cleanup:
 	test_xdp_link__destroy(skel1);

tools/testing/selftests/bpf/progs/test_d_path_check_types.c

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+extern const int bpf_prog_active __ksym;
+
+struct {
+	__uint(type, BPF_MAP_TYPE_RINGBUF);
+	__uint(max_entries, 1 << 12);
+} ringbuf SEC(".maps");
+
+SEC("fentry/security_inode_getattr")
+int BPF_PROG(d_path_check_rdonly_mem, struct path *path, struct kstat *stat,
+	     __u32 request_mask, unsigned int query_flags)
+{
+	void *active;
+	u32 cpu;
+
+	cpu = bpf_get_smp_processor_id();
+	active = (void *)bpf_per_cpu_ptr(&bpf_prog_active, cpu);
+	if (active) {
+		/* FAIL here! 'active' points to 'regular' memory. It
+		 * cannot be submitted to ring buffer.
+		 */
+		bpf_ringbuf_submit(active, 0);
+	}
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";

tools/testing/selftests/bpf/progs/test_xdp_link.c

@@ -10,3 +10,9 @@ int xdp_handler(struct xdp_md *xdp)
 {
 	return 0;
 }
+
+SEC("tc")
+int tc_handler(struct __sk_buff *skb)
+{
+	return 0;
+}

tools/testing/selftests/bpf/verifier/ringbuf.c

@@ -0,0 +1,95 @@
+{
+	"ringbuf: invalid reservation offset 1",
+	.insns = {
+	/* reserve 8 byte ringbuf memory */
+	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_MOV64_IMM(BPF_REG_2, 8),
+	BPF_MOV64_IMM(BPF_REG_3, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve),
+	/* store a pointer to the reserved memory in R6 */
+	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
+	/* check whether the reservation was successful */
+	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
+	/* spill R6(mem) into the stack */
+	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
+	/* fill it back in R7 */
+	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_10, -8),
+	/* should be able to access *(R7) = 0 */
+	BPF_ST_MEM(BPF_DW, BPF_REG_7, 0, 0),
+	/* submit the reserved ringbuf memory */
+	BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
+	/* add invalid offset to reserved ringbuf memory */
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0xcafe),
+	BPF_MOV64_IMM(BPF_REG_2, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_map_ringbuf = { 1 },
+	.result = REJECT,
+	.errstr = "dereference of modified alloc_mem ptr R1",
+},
+{
+	"ringbuf: invalid reservation offset 2",
+	.insns = {
+	/* reserve 8 byte ringbuf memory */
+	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_MOV64_IMM(BPF_REG_2, 8),
+	BPF_MOV64_IMM(BPF_REG_3, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve),
+	/* store a pointer to the reserved memory in R6 */
+	BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
+	/* check whether the reservation was successful */
+	BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
+	/* spill R6(mem) into the stack */
+	BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
+	/* fill it back in R7 */
+	BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_10, -8),
+	/* add invalid offset to reserved ringbuf memory */
+	BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, 0xcafe),
+	/* should be able to access *(R7) = 0 */
+	BPF_ST_MEM(BPF_DW, BPF_REG_7, 0, 0),
+	/* submit the reserved ringbuf memory */
+	BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
+	BPF_MOV64_IMM(BPF_REG_2, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_map_ringbuf = { 1 },
+	.result = REJECT,
+	.errstr = "R7 min value is outside of the allowed memory range",
+},
+{
+	"ringbuf: check passing rb mem to helpers",
+	.insns = {
+	BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
+	/* reserve 8 byte ringbuf memory */
+	BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
+	BPF_LD_MAP_FD(BPF_REG_1, 0),
+	BPF_MOV64_IMM(BPF_REG_2, 8),
+	BPF_MOV64_IMM(BPF_REG_3, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve),
+	BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
+	/* check whether the reservation was successful */
+	BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
+	BPF_EXIT_INSN(),
+	/* pass allocated ring buffer memory to fib lookup */
+	BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
+	BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
+	BPF_MOV64_IMM(BPF_REG_3, 8),
+	BPF_MOV64_IMM(BPF_REG_4, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_fib_lookup),
+	/* submit the ringbuf memory */
+	BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
+	BPF_MOV64_IMM(BPF_REG_2, 0),
+	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.fixup_map_ringbuf = { 2 },
+	.prog_type = BPF_PROG_TYPE_XDP,
+	.result = ACCEPT,
+},

tools/testing/selftests/bpf/verifier/spill_fill.c

@@ -84,7 +84,7 @@
 	},
 	.fixup_map_ringbuf = { 1 },
 	.result = REJECT,
-	.errstr = "R0 pointer arithmetic on mem_or_null prohibited",
+	.errstr = "R0 pointer arithmetic on alloc_mem_or_null prohibited",
 },
 {
 	"check corrupted spill/fill",

tools/testing/selftests/net/fcnal-test.sh

@@ -4059,6 +4059,9 @@ usage: ${0##*/} OPTS
 	-p          Pause on fail
 	-P          Pause after each test
 	-v          Be verbose
+
+Tests:
+	$TESTS_IPV4 $TESTS_IPV6 $TESTS_OTHER
 EOF
 }
 

tools/testing/selftests/net/settings

@@ -1 +1 @@
-timeout=300
+timeout=1500