Merge tag 'net-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/…

…git/netdev/net

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

  Not all that quiet given spring celebrations, but "current" fixes are
  thinning out, which is encouraging. One outstanding regression in the
  mlx5 driver when using old FW, not blocking but we're pushing for a
  fix.

  Current release - new code bugs:

   - eth: enetc: workaround for unresponsive pMAC after receiving
     express traffic

  Previous releases - regressions:

   - rtnetlink: restore RTM_NEW/DELLINK notification behavior, keep the
     pid/seq fields 0 for backward compatibility

  Previous releases - always broken:

   - sctp: fix a potential overflow in sctp_ifwdtsn_skip

   - mptcp:
      - use mptcp_schedule_work instead of open-coding it and make the
        worker check stricter, to avoid scheduling work on closed
        sockets
      - fix NULL pointer dereference on fastopen early fallback

   - skbuff: fix memory corruption due to a race between skb coalescing
     and releasing clones confusing page_pool reference counting

   - bonding: fix neighbor solicitation validation on backup slaves

   - bpf: tcp: use sock_gen_put instead of sock_put in bpf_iter_tcp

   - bpf: arm64: fixed a BTI error on returning to patched function

   - openvswitch: fix race on port output leading to inf loop

   - sfp: initialize sfp->i2c_block_size at sfp allocation to avoid
     returning a different errno than expected

   - phy: nxp-c45-tja11xx: unregister PTP, purge queues on remove

   - Bluetooth: fix printing errors if LE Connection times out

   - Bluetooth: assorted UaF, deadlock and data race fixes

   - eth: macb: fix memory corruption in extended buffer descriptor mode

  Misc:

   - adjust the XDP Rx flow hash API to also include the protocol layers
     over which the hash was computed"

* tag 'net-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits)
  selftests/bpf: Adjust bpf_xdp_metadata_rx_hash for new arg
  mlx4: bpf_xdp_metadata_rx_hash add xdp rss hash type
  veth: bpf_xdp_metadata_rx_hash add xdp rss hash type
  mlx5: bpf_xdp_metadata_rx_hash add xdp rss hash type
  xdp: rss hash types representation
  selftests/bpf: xdp_hw_metadata remove bpf_printk and add counters
  skbuff: Fix a race between coalescing and releasing SKBs
  net: macb: fix a memory corruption in extended buffer descriptor mode
  selftests: add the missing CONFIG_IP_SCTP in net config
  udp6: fix potential access to stale information
  selftests: openvswitch: adjust datapath NL message declaration
  selftests: mptcp: userspace pm: uniform verify events
  mptcp: fix NULL pointer dereference on fastopen early fallback
  mptcp: stricter state check in mptcp_worker
  mptcp: use mptcp_schedule_work instead of open-coding it
  net: enetc: workaround for unresponsive pMAC after receiving express traffic
  sctp: fix a potential overflow in sctp_ifwdtsn_skip
  net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()
  rtnetlink: Restore RTM_NEW/DELLINK notification behavior
  net: ti/cpsw: Add explicit platform_device.h and of_platform.h includes
  ...

Documentation/networking/ip-sysctl.rst

@@ -340,6 +340,8 @@ tcp_app_win - INTEGER
 	Reserve max(window/2^tcp_app_win, mss) of window for application
 	buffer. Value 0 is special, it means that nothing is reserved.
 
+	Possible values are [0, 31], inclusive.
+
 	Default: 31
 
 tcp_autocorking - BOOLEAN

arch/arm64/net/bpf_jit.h

@@ -281,4 +281,8 @@
 /* DMB */
 #define A64_DMB_ISH aarch64_insn_gen_dmb(AARCH64_INSN_MB_ISH)
 
+/* ADR */
+#define A64_ADR(Rd, offset) \
+	aarch64_insn_gen_adr(0, offset, Rd, AARCH64_INSN_ADR_TYPE_ADR)
+
 #endif /* _BPF_JIT_H */

arch/arm64/net/bpf_jit_comp.c

@@ -1900,7 +1900,8 @@ static int prepare_trampoline(struct jit_ctx *ctx, struct bpf_tramp_image *im,
 		restore_args(ctx, args_off, nargs);
 		/* call original func */
 		emit(A64_LDR64I(A64_R(10), A64_SP, retaddr_off), ctx);
-		emit(A64_BLR(A64_R(10)), ctx);
+		emit(A64_ADR(A64_LR, AARCH64_INSN_SIZE * 2), ctx);
+		emit(A64_RET(A64_R(10)), ctx);
 		/* store return value */
 		emit(A64_STR64I(A64_R(0), A64_SP, retval_off), ctx);
 		/* reserve a nop for bpf_tramp_image_put */

arch/loongarch/net/bpf_jit.c

@@ -1022,6 +1022,10 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext
 		emit_atomic(insn, ctx);
 		break;
 
+	/* Speculation barrier */
+	case BPF_ST | BPF_NOSPEC:
+		break;
+
 	default:
 		pr_err("bpf_jit: unknown opcode %02x\n", code);
 		return -EINVAL;

drivers/bluetooth/btbcm.c

@@ -511,7 +511,7 @@ static const char *btbcm_get_board_name(struct device *dev)
 	len = strlen(tmp) + 1;
 	board_type = devm_kzalloc(dev, len, GFP_KERNEL);
 	strscpy(board_type, tmp, len);
-	for (i = 0; i < board_type[i]; i++) {
+	for (i = 0; i < len; i++) {
 		if (board_type[i] == '/')
 			board_type[i] = '-';
 	}

drivers/bluetooth/btsdio.c

@@ -358,6 +358,7 @@ static void btsdio_remove(struct sdio_func *func)
 	if (!data)
 		return;
 
+	cancel_work_sync(&data->work);
 	hdev = data->hdev;
 
 	sdio_set_drvdata(func, NULL);

drivers/net/bonding/bond_main.c

@@ -3269,7 +3269,8 @@ static int bond_na_rcv(const struct sk_buff *skb, struct bonding *bond,
 
 	combined = skb_header_pointer(skb, 0, sizeof(_combined), &_combined);
 	if (!combined || combined->ip6.nexthdr != NEXTHDR_ICMP ||
-	    combined->icmp6.icmp6_type != NDISC_NEIGHBOUR_ADVERTISEMENT)
+	    (combined->icmp6.icmp6_type != NDISC_NEIGHBOUR_SOLICITATION &&
+	     combined->icmp6.icmp6_type != NDISC_NEIGHBOUR_ADVERTISEMENT))
 		goto out;
 
 	saddr = &combined->ip6.saddr;
@@ -3291,7 +3292,7 @@ static int bond_na_rcv(const struct sk_buff *skb, struct bonding *bond,
 	else if (curr_active_slave &&
 		 time_after(slave_last_rx(bond, curr_active_slave),
 			    curr_active_slave->last_link_up))
-		bond_validate_na(bond, slave, saddr, daddr);
+		bond_validate_na(bond, slave, daddr, saddr);
 	else if (curr_arp_slave &&
 		 bond_time_in_interval(bond, slave_last_tx(curr_arp_slave), 1))
 		bond_validate_na(bond, slave, saddr, daddr);

drivers/net/ethernet/cadence/macb_main.c

@@ -1064,6 +1064,10 @@ static dma_addr_t macb_get_addr(struct macb *bp, struct macb_dma_desc *desc)
 	}
 #endif
 	addr |= MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, desc->addr));
+#ifdef CONFIG_MACB_USE_HWSTAMP
+	if (bp->hw_dma_cap & HW_DMA_CAP_PTP)
+		addr &= ~GEM_BIT(DMA_RXVALID);
+#endif
 	return addr;
 }
 

drivers/net/ethernet/freescale/enetc/enetc_ethtool.c

@@ -989,6 +989,20 @@ static int enetc_get_mm(struct net_device *ndev, struct ethtool_mm_state *state)
 	return 0;
 }
 
+/* FIXME: Workaround for the link partner's verification failing if ENETC
+ * priorly received too much express traffic. The documentation doesn't
+ * suggest this is needed.
+ */
+static void enetc_restart_emac_rx(struct enetc_si *si)
+{
+	u32 val = enetc_port_rd(&si->hw, ENETC_PM0_CMD_CFG);
+
+	enetc_port_wr(&si->hw, ENETC_PM0_CMD_CFG, val & ~ENETC_PM0_RX_EN);
+
+	if (val & ENETC_PM0_RX_EN)
+		enetc_port_wr(&si->hw, ENETC_PM0_CMD_CFG, val);
+}
+
 static int enetc_set_mm(struct net_device *ndev, struct ethtool_mm_cfg *cfg,
 			struct netlink_ext_ack *extack)
 {
@@ -1040,6 +1054,8 @@ static int enetc_set_mm(struct net_device *ndev, struct ethtool_mm_cfg *cfg,
 
 	enetc_port_wr(hw, ENETC_MMCSR, val);
 
+	enetc_restart_emac_rx(priv->si);
+
 	mutex_unlock(&priv->mm_lock);
 
 	return 0;

drivers/net/ethernet/intel/iavf/iavf.h

@@ -59,8 +59,6 @@ enum iavf_vsi_state_t {
 struct iavf_vsi {
 	struct iavf_adapter *back;
 	struct net_device *netdev;
-	unsigned long active_cvlans[BITS_TO_LONGS(VLAN_N_VID)];
-	unsigned long active_svlans[BITS_TO_LONGS(VLAN_N_VID)];
 	u16 seid;
 	u16 id;
 	DECLARE_BITMAP(state, __IAVF_VSI_STATE_SIZE__);
@@ -158,15 +156,20 @@ struct iavf_vlan {
 	u16 tpid;
 };
 
+enum iavf_vlan_state_t {
+	IAVF_VLAN_INVALID,
+	IAVF_VLAN_ADD,		/* filter needs to be added */
+	IAVF_VLAN_IS_NEW,	/* filter is new, wait for PF answer */
+	IAVF_VLAN_ACTIVE,	/* filter is accepted by PF */
+	IAVF_VLAN_DISABLE,	/* filter needs to be deleted by PF, then marked INACTIVE */
+	IAVF_VLAN_INACTIVE,	/* filter is inactive, we are in IFF_DOWN */
+	IAVF_VLAN_REMOVE,	/* filter needs to be removed from list */
+};
+
 struct iavf_vlan_filter {
 	struct list_head list;
 	struct iavf_vlan vlan;
-	struct {
-		u8 is_new_vlan:1;	/* filter is new, wait for PF answer */
-		u8 remove:1;		/* filter needs to be removed */
-		u8 add:1;		/* filter needs to be added */
-		u8 padding:5;
-	};
+	enum iavf_vlan_state_t state;
 };
 
 #define IAVF_MAX_TRAFFIC_CLASS	4
@@ -258,6 +261,7 @@ struct iavf_adapter {
 	wait_queue_head_t vc_waitqueue;
 	struct iavf_q_vector *q_vectors;
 	struct list_head vlan_filter_list;
+	int num_vlan_filters;
 	struct list_head mac_filter_list;
 	struct mutex crit_lock;
 	struct mutex client_lock;

drivers/net/ethernet/intel/iavf/iavf_main.c

@@ -791,7 +791,8 @@ iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter,
 		f->vlan = vlan;
 
 		list_add_tail(&f->list, &adapter->vlan_filter_list);
-		f->add = true;
+		f->state = IAVF_VLAN_ADD;
+		adapter->num_vlan_filters++;
 		adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
 	}
 
@@ -813,7 +814,7 @@ static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
 
 	f = iavf_find_vlan(adapter, vlan);
 	if (f) {
-		f->remove = true;
+		f->state = IAVF_VLAN_REMOVE;
 		adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
 	}
 
@@ -828,14 +829,18 @@ static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
  **/
 static void iavf_restore_filters(struct iavf_adapter *adapter)
 {
-	u16 vid;
+	struct iavf_vlan_filter *f;
 
 	/* re-add all VLAN filters */
-	for_each_set_bit(vid, adapter->vsi.active_cvlans, VLAN_N_VID)
-		iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021Q));
+	spin_lock_bh(&adapter->mac_vlan_list_lock);
 
-	for_each_set_bit(vid, adapter->vsi.active_svlans, VLAN_N_VID)
-		iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021AD));
+	list_for_each_entry(f, &adapter->vlan_filter_list, list) {
+		if (f->state == IAVF_VLAN_INACTIVE)
+			f->state = IAVF_VLAN_ADD;
+	}
+
+	spin_unlock_bh(&adapter->mac_vlan_list_lock);
+	adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
 }
 
 /**
@@ -844,8 +849,7 @@ static void iavf_restore_filters(struct iavf_adapter *adapter)
  */
 u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
 {
-	return bitmap_weight(adapter->vsi.active_cvlans, VLAN_N_VID) +
-		bitmap_weight(adapter->vsi.active_svlans, VLAN_N_VID);
+	return adapter->num_vlan_filters;
 }
 
 /**
@@ -928,11 +932,6 @@ static int iavf_vlan_rx_kill_vid(struct net_device *netdev,
 		return 0;
 
 	iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)));
-	if (proto == cpu_to_be16(ETH_P_8021Q))
-		clear_bit(vid, adapter->vsi.active_cvlans);
-	else
-		clear_bit(vid, adapter->vsi.active_svlans);
-
 	return 0;
 }
 
@@ -1293,16 +1292,11 @@ static void iavf_clear_mac_vlan_filters(struct iavf_adapter *adapter)
 		}
 	}
 
-	/* remove all VLAN filters */
+	/* disable all VLAN filters */
 	list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
-				 list) {
-		if (vlf->add) {
-			list_del(&vlf->list);
-			kfree(vlf);
-		} else {
-			vlf->remove = true;
-		}
-	}
+				 list)
+		vlf->state = IAVF_VLAN_DISABLE;
+
 	spin_unlock_bh(&adapter->mac_vlan_list_lock);
 }
 
@@ -2914,6 +2908,7 @@ static void iavf_disable_vf(struct iavf_adapter *adapter)
 		list_del(&fv->list);
 		kfree(fv);
 	}
+	adapter->num_vlan_filters = 0;
 
 	spin_unlock_bh(&adapter->mac_vlan_list_lock);
 
@@ -3131,9 +3126,6 @@ static void iavf_reset_task(struct work_struct *work)
 	adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
 	iavf_misc_irq_enable(adapter);
 
-	bitmap_clear(adapter->vsi.active_cvlans, 0, VLAN_N_VID);
-	bitmap_clear(adapter->vsi.active_svlans, 0, VLAN_N_VID);
-
 	mod_delayed_work(adapter->wq, &adapter->watchdog_task, 2);
 
 	/* We were running when the reset started, so we need to restore some