8 files changed, 83 insertions, 15 deletions
diff --git a/include/linux/dsa/ocelot.h b/include/linux/dsa/ocelot.h
index dca2969015d8..6fbfbde68a37 100644
--- a/include/linux/dsa/ocelot.h
+++ b/include/linux/dsa/ocelot.h
@@ -5,6 +5,8 @@
 #ifndef _NET_DSA_TAG_OCELOT_H
 #define _NET_DSA_TAG_OCELOT_H
 
+#include <linux/if_bridge.h>
+#include <linux/if_vlan.h>
 #include <linux/kthread.h>
 #include <linux/packing.h>
 #include <linux/skbuff.h>
@@ -273,4 +275,49 @@ static inline u32 ocelot_ptp_rew_op(struct sk_buff *skb)
 	return rew_op;
 }
 
+/**
+ * ocelot_xmit_get_vlan_info: Determine VLAN_TCI and TAG_TYPE for injected frame
+ * @skb: Pointer to socket buffer
+ * @br: Pointer to bridge device that the port is under, if any
+ * @vlan_tci:
+ * @tag_type:
+ *
+ * If the port is under a VLAN-aware bridge, remove the VLAN header from the
+ * payload and move it into the DSA tag, which will make the switch classify
+ * the packet to the bridge VLAN. Otherwise, leave the classified VLAN at zero,
+ * which is the pvid of standalone ports (OCELOT_STANDALONE_PVID), although not
+ * of VLAN-unaware bridge ports (that would be ocelot_vlan_unaware_pvid()).
+ * Anyway, VID 0 is fine because it is stripped on egress for these port modes,
+ * and source address learning is not performed for packets injected from the
+ * CPU anyway, so it doesn't matter that the VID is "wrong".
+ */
+static inline void ocelot_xmit_get_vlan_info(struct sk_buff *skb,
+					     struct net_device *br,
+					     u64 *vlan_tci, u64 *tag_type)
+{
+	struct vlan_ethhdr *hdr;
+	u16 proto, tci;
+
+	if (!br || !br_vlan_enabled(br)) {
+		*vlan_tci = 0;
+		*tag_type = IFH_TAG_TYPE_C;
+		return;
+	}
+
+	hdr = (struct vlan_ethhdr *)skb_mac_header(skb);
+	br_vlan_get_proto(br, &proto);
+
+	if (ntohs(hdr->h_vlan_proto) == proto) {
+		vlan_remove_tag(skb, &tci);
+		*vlan_tci = tci;
+	} else {
+		rcu_read_lock();
+		br_vlan_get_pvid_rcu(br, &tci);
+		rcu_read_unlock();
+		*vlan_tci = tci;
+	}
+
+	*tag_type = (proto != ETH_P_8021Q) ? IFH_TAG_TYPE_S : IFH_TAG_TYPE_C;
+}
+
 #endif
diff --git a/include/linux/panic.h b/include/linux/panic.h
index 3130e0b5116b..54d90b6c5f47 100644
--- a/include/linux/panic.h
+++ b/include/linux/panic.h
@@ -16,6 +16,7 @@ extern void oops_enter(void);
 extern void oops_exit(void);
 extern bool oops_may_print(void);
 
+extern bool panic_triggering_all_cpu_backtrace;
 extern int panic_timeout;
 extern unsigned long panic_print;
 extern int panic_on_oops;
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index e372a88e8c3f..d1d073089f38 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -206,14 +206,17 @@ enum {
 	 */
 	HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED,
 
-	/* When this quirk is set, the controller has validated that
-	 * LE states reported through the HCI_LE_READ_SUPPORTED_STATES are
-	 * valid.  This mechanism is necessary as many controllers have
-	 * been seen has having trouble initiating a connectable
-	 * advertisement despite the state combination being reported as
-	 * supported.
+	/* When this quirk is set, the LE states reported through the
+	 * HCI_LE_READ_SUPPORTED_STATES are invalid/broken.
+	 *
+	 * This mechanism is necessary as many controllers have been seen has
+	 * having trouble initiating a connectable advertisement despite the
+	 * state combination being reported as supported.
+	 *
+	 * This quirk can be set before hci_register_dev is called or
+	 * during the hdev->setup vendor callback.
 	 */
-	HCI_QUIRK_VALID_LE_STATES,
+	HCI_QUIRK_BROKEN_LE_STATES,
 
 	/* When this quirk is set, then erroneous data reporting
 	 * is ignored. This is mainly due to the fact that the HCI
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 31020891fc68..e449dba698f3 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -825,7 +825,7 @@ extern struct mutex hci_cb_list_lock;
 	} while (0)
 
 #define hci_dev_le_state_simultaneous(hdev) \
-	(test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
+	(!test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) && \
 	 (hdev->le_states[4] & 0x08) &&	/* Central */ \
 	 (hdev->le_states[4] & 0x40) &&	/* Peripheral */ \
 	 (hdev->le_states[3] & 0x10))	/* Simultaneous */
diff --git a/include/net/dsa.h b/include/net/dsa.h
index b06f97ae3da1..d7a6c2930277 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -403,14 +403,18 @@ struct dsa_switch {
 	 */
 	u32			configure_vlan_while_not_filtering:1;
 
-	/* If the switch driver always programs the CPU port as egress tagged
-	 * despite the VLAN configuration indicating otherwise, then setting
-	 * @untag_bridge_pvid will force the DSA receive path to pop the
-	 * bridge's default_pvid VLAN tagged frames to offer a consistent
-	 * behavior between a vlan_filtering=0 and vlan_filtering=1 bridge
-	 * device.
+	/* Pop the default_pvid of VLAN-unaware bridge ports from tagged frames.
+	 * DEPRECATED: Do NOT set this field in new drivers. Instead look at
+	 * the dsa_software_vlan_untag() comments.
 	 */
 	u32			untag_bridge_pvid:1;
+	/* Pop the default_pvid of VLAN-aware bridge ports from tagged frames.
+	 * Useful if the switch cannot preserve the VLAN tag as seen on the
+	 * wire for user port ingress, and chooses to send all frames as
+	 * VLAN-tagged to the CPU, including those which were originally
+	 * untagged.
+	 */
+	u32			untag_vlan_aware_bridge_pvid:1;
 
 	/* Let DSA manage the FDB entries towards the
 	 * CPU, based on the software bridge database.
diff --git a/include/net/kcm.h b/include/net/kcm.h
index 90279e5e09a5..441e993be634 100644
--- a/include/net/kcm.h
+++ b/include/net/kcm.h
@@ -70,6 +70,7 @@ struct kcm_sock {
 	struct work_struct tx_work;
 	struct list_head wait_psock_list;
 	struct sk_buff *seq_skb;
+	struct mutex tx_mutex;
 	u32 tx_stopped : 1;
 
 	/* Don't use bit fields here, these are set under different locks */
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 6a37b29f4b4c..462c653e1017 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -813,6 +813,9 @@ struct ocelot {
 	const u32 *const		*map;
 	struct list_head		stats_regions;
 
+	spinlock_t			inj_lock;
+	spinlock_t			xtr_lock;
+
 	u32				pool_size[OCELOT_SB_NUM][OCELOT_SB_POOL_NUM];
 	int				packet_buffer_size;
 	int				num_frame_refs;
@@ -966,10 +969,17 @@ void __ocelot_target_write_ix(struct ocelot *ocelot, enum ocelot_target target,
 			      u32 val, u32 reg, u32 offset);
 
 /* Packet I/O */
+void ocelot_lock_inj_grp(struct ocelot *ocelot, int grp);
+void ocelot_unlock_inj_grp(struct ocelot *ocelot, int grp);
+void ocelot_lock_xtr_grp(struct ocelot *ocelot, int grp);
+void ocelot_unlock_xtr_grp(struct ocelot *ocelot, int grp);
+void ocelot_lock_xtr_grp_bh(struct ocelot *ocelot, int grp);
+void ocelot_unlock_xtr_grp_bh(struct ocelot *ocelot, int grp);
 bool ocelot_can_inject(struct ocelot *ocelot, int grp);
 void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
 			      u32 rew_op, struct sk_buff *skb);
-void ocelot_ifh_port_set(void *ifh, int port, u32 rew_op, u32 vlan_tag);
+void ocelot_ifh_set_basic(void *ifh, struct ocelot *ocelot, int port,
+			  u32 rew_op, struct sk_buff *skb);
 int ocelot_xtr_poll_frame(struct ocelot *ocelot, int grp, struct sk_buff **skb);
 void ocelot_drain_cpu_queue(struct ocelot *ocelot, int grp);
 void ocelot_ptp_rx_timestamp(struct ocelot *ocelot, struct sk_buff *skb,
diff --git a/include/soc/mscc/ocelot_vcap.h b/include/soc/mscc/ocelot_vcap.h
index c601a4598b0d..eb19668a06db 100644
--- a/include/soc/mscc/ocelot_vcap.h
+++ b/include/soc/mscc/ocelot_vcap.h
@@ -13,6 +13,7 @@
  */
 #define OCELOT_VCAP_ES0_TAG_8021Q_RXVLAN(ocelot, port, upstream) ((upstream) << 16 | (port))
 #define OCELOT_VCAP_IS1_TAG_8021Q_TXVLAN(ocelot, port)		(port)
+#define OCELOT_VCAP_IS1_VLAN_RECLASSIFY(ocelot, port)		((ocelot)->num_phys_ports + (port))
 #define OCELOT_VCAP_IS2_TAG_8021Q_TXVLAN(ocelot, port)		(port)
 #define OCELOT_VCAP_IS2_MRP_REDIRECT(ocelot, port)		((ocelot)->num_phys_ports + (port))
 #define OCELOT_VCAP_IS2_MRP_TRAP(ocelot)			((ocelot)->num_phys_ports * 2)
@@ -499,6 +500,7 @@ struct ocelot_vcap_key_vlan {
 	struct ocelot_vcap_u8  pcp;    /* PCP (3 bit) */
 	enum ocelot_vcap_bit dei;    /* DEI */
 	enum ocelot_vcap_bit tagged; /* Tagged/untagged frame */
+	enum ocelot_vcap_bit tpid;
 };
 
 struct ocelot_vcap_key_etype {