Merge branch 'mlxsw-Preparations-for-VxLAN-support'

Ido Schimmel says:

====================
mlxsw: Preparations for VxLAN support

This patchset prepares mlxsw for VxLAN support. It contains small and
mostly non-functional changes.

The first eight patches perform small changes in the code to make it
more receptive towards the actual VxLAN changes in the next patchset.

Patches 9-17 add the registers used to configure the device for VxLAN
offload.

Last two patches add the required resources and trap IDs.

The next patchset is available here [1].

1. https://github.com/idosch/linux/tree/vxlan
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/resources.h

@@ -46,6 +46,8 @@ enum mlxsw_res_id {
 	MLXSW_RES_ID_MAX_RIFS,
 	MLXSW_RES_ID_MC_ERIF_LIST_ENTRIES,
 	MLXSW_RES_ID_MAX_LPM_TREES,
+	MLXSW_RES_ID_MAX_NVE_MC_ENTRIES_IPV4,
+	MLXSW_RES_ID_MAX_NVE_MC_ENTRIES_IPV6,
 
 	/* Internal resources.
 	 * Determined by the SW, not queried from the HW.
@@ -96,6 +98,8 @@ static u16 mlxsw_res_ids[] = {
 	[MLXSW_RES_ID_MAX_RIFS] = 0x2C02,
 	[MLXSW_RES_ID_MC_ERIF_LIST_ENTRIES] = 0x2C10,
 	[MLXSW_RES_ID_MAX_LPM_TREES] = 0x2C30,
+	[MLXSW_RES_ID_MAX_NVE_MC_ENTRIES_IPV4] = 0x2E02,
+	[MLXSW_RES_ID_MAX_NVE_MC_ENTRIES_IPV6] = 0x2E03,
 };
 
 struct mlxsw_res {

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

@@ -21,6 +21,7 @@
 #include <linux/dcbnl.h>
 #include <linux/inetdevice.h>
 #include <linux/netlink.h>
+#include <linux/random.h>
 #include <net/switchdev.h>
 #include <net/pkt_cls.h>
 #include <net/tc_act/tc_mirred.h>
@@ -3469,6 +3470,7 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
 	MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV4, TRAP_TO_CPU, ROUTER_EXP, false),
 	MLXSW_SP_RXL_MARK(ROUTER_ALERT_IPV6, TRAP_TO_CPU, ROUTER_EXP, false),
 	MLXSW_SP_RXL_MARK(IPIP_DECAP_ERROR, TRAP_TO_CPU, ROUTER_EXP, false),
+	MLXSW_SP_RXL_MARK(DECAP_ECN0, TRAP_TO_CPU, ROUTER_EXP, false),
 	MLXSW_SP_RXL_MARK(IPV4_VRRP, TRAP_TO_CPU, ROUTER_EXP, false),
 	MLXSW_SP_RXL_MARK(IPV6_VRRP, TRAP_TO_CPU, ROUTER_EXP, false),
 	/* PKT Sample trap */
@@ -3482,6 +3484,8 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = {
 	MLXSW_SP_RXL_MARK(RPF, TRAP_TO_CPU, RPF, false),
 	MLXSW_SP_RXL_MARK(ACL1, TRAP_TO_CPU, MULTICAST, false),
 	MLXSW_SP_RXL_MR_MARK(ACL2, TRAP_TO_CPU, MULTICAST, false),
+	/* NVE traps */
+	MLXSW_SP_RXL_MARK(NVE_ENCAP_ARP, TRAP_TO_CPU, ARP, false),
 };
 
 static int mlxsw_sp_cpu_policers_set(struct mlxsw_core *mlxsw_core)
@@ -3666,8 +3670,10 @@ static void mlxsw_sp_traps_fini(struct mlxsw_sp *mlxsw_sp)
 static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
 {
 	char slcr_pl[MLXSW_REG_SLCR_LEN];
+	u32 seed;
 	int err;
 
+	get_random_bytes(&seed, sizeof(seed));
 	mlxsw_reg_slcr_pack(slcr_pl, MLXSW_REG_SLCR_LAG_HASH_SMAC |
 				     MLXSW_REG_SLCR_LAG_HASH_DMAC |
 				     MLXSW_REG_SLCR_LAG_HASH_ETHERTYPE |
@@ -3676,7 +3682,7 @@ static int mlxsw_sp_lag_init(struct mlxsw_sp *mlxsw_sp)
 				     MLXSW_REG_SLCR_LAG_HASH_DIP |
 				     MLXSW_REG_SLCR_LAG_HASH_SPORT |
 				     MLXSW_REG_SLCR_LAG_HASH_DPORT |
-				     MLXSW_REG_SLCR_LAG_HASH_IPPROTO);
+				     MLXSW_REG_SLCR_LAG_HASH_IPPROTO, seed);
 	err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(slcr), slcr_pl);
 	if (err)
 		return err;

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

@@ -383,6 +383,17 @@ static inline void mlxsw_sp_port_dcb_fini(struct mlxsw_sp_port *mlxsw_sp_port)
 #endif
 
 /* spectrum_router.c */
+enum mlxsw_sp_l3proto {
+	MLXSW_SP_L3_PROTO_IPV4,
+	MLXSW_SP_L3_PROTO_IPV6,
+#define MLXSW_SP_L3_PROTO_MAX	(MLXSW_SP_L3_PROTO_IPV6 + 1)
+};
+
+union mlxsw_sp_l3addr {
+	__be32 addr4;
+	struct in6_addr addr6;
+};
+
 int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp);
 void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp);
 int mlxsw_sp_netdevice_router_port_event(struct net_device *dev);
@@ -416,6 +427,10 @@ mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan);
 void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif);
 void mlxsw_sp_rif_destroy_by_dev(struct mlxsw_sp *mlxsw_sp,
 				 struct net_device *dev);
+struct mlxsw_sp_rif *mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
+					      const struct net_device *dev);
+u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp);
+struct mlxsw_sp_fid *mlxsw_sp_rif_fid(const struct mlxsw_sp_rif *rif);
 
 /* spectrum_kvdl.c */
 enum mlxsw_sp_kvdl_entry_type {
@@ -423,6 +438,7 @@ enum mlxsw_sp_kvdl_entry_type {
 	MLXSW_SP_KVDL_ENTRY_TYPE_ACTSET,
 	MLXSW_SP_KVDL_ENTRY_TYPE_PBS,
 	MLXSW_SP_KVDL_ENTRY_TYPE_MCRIGR,
+	MLXSW_SP_KVDL_ENTRY_TYPE_TNUMT,
 };
 
 static inline unsigned int
@@ -433,6 +449,7 @@ mlxsw_sp_kvdl_entry_size(enum mlxsw_sp_kvdl_entry_type type)
 	case MLXSW_SP_KVDL_ENTRY_TYPE_ACTSET: /* fall through */
 	case MLXSW_SP_KVDL_ENTRY_TYPE_PBS: /* fall through */
 	case MLXSW_SP_KVDL_ENTRY_TYPE_MCRIGR: /* fall through */
+	case MLXSW_SP_KVDL_ENTRY_TYPE_TNUMT: /* fall through */
 	default:
 		return 1;
 	}

drivers/net/ethernet/mellanox/mlxsw/spectrum2_kvdl.c

@@ -35,6 +35,7 @@ static const struct mlxsw_sp2_kvdl_part_info mlxsw_sp2_kvdl_parts_info[] = {
 				 MAX_KVD_ACTION_SETS),
 	MLXSW_SP2_KVDL_PART_INFO(PBS, 0x24, KVD_SIZE, KVD_SIZE),
 	MLXSW_SP2_KVDL_PART_INFO(MCRIGR, 0x26, KVD_SIZE, KVD_SIZE),
+	MLXSW_SP2_KVDL_PART_INFO(TNUMT, 0x29, KVD_SIZE, KVD_SIZE),
 };
 
 #define MLXSW_SP2_KVDL_PARTS_INFO_LEN ARRAY_SIZE(mlxsw_sp2_kvdl_parts_info)

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h

@@ -7,17 +7,6 @@
 #include "spectrum.h"
 #include "reg.h"
 
-enum mlxsw_sp_l3proto {
-	MLXSW_SP_L3_PROTO_IPV4,
-	MLXSW_SP_L3_PROTO_IPV6,
-#define MLXSW_SP_L3_PROTO_MAX	(MLXSW_SP_L3_PROTO_IPV6 + 1)
-};
-
-union mlxsw_sp_l3addr {
-	__be32 addr4;
-	struct in6_addr addr6;
-};
-
 struct mlxsw_sp_rif_ipip_lb;
 struct mlxsw_sp_rif_ipip_lb_config {
 	enum mlxsw_reg_ritr_loopback_ipip_type lb_ipipt;
@@ -35,8 +24,6 @@ struct mlxsw_sp_neigh_entry;
 struct mlxsw_sp_nexthop;
 struct mlxsw_sp_ipip_entry;
 
-struct mlxsw_sp_rif *mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
-					      const struct net_device *dev);
 struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,
 					   u16 rif_index);
 u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif);
@@ -44,9 +31,7 @@ u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *rif);
 u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *rif);
 u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev);
 int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif);
-u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp);
 const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif);
-struct mlxsw_sp_fid *mlxsw_sp_rif_fid(const struct mlxsw_sp_rif *rif);
 int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp,
 				   struct mlxsw_sp_rif *rif,
 				   enum mlxsw_sp_rif_counter_dir dir,

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

@@ -17,7 +17,6 @@
 #include <net/switchdev.h>
 
 #include "spectrum_span.h"
-#include "spectrum_router.h"
 #include "spectrum_switchdev.h"
 #include "spectrum.h"
 #include "core.h"
@@ -2289,7 +2288,7 @@ struct mlxsw_sp_switchdev_event_work {
 	unsigned long event;
 };
 
-static void mlxsw_sp_switchdev_event_work(struct work_struct *work)
+static void mlxsw_sp_switchdev_bridge_fdb_event_work(struct work_struct *work)
 {
 	struct mlxsw_sp_switchdev_event_work *switchdev_work =
 		container_of(work, struct mlxsw_sp_switchdev_event_work, work);
@@ -2344,16 +2343,23 @@ static int mlxsw_sp_switchdev_event(struct notifier_block *unused,
 {
 	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
 	struct mlxsw_sp_switchdev_event_work *switchdev_work;
-	struct switchdev_notifier_fdb_info *fdb_info = ptr;
+	struct switchdev_notifier_fdb_info *fdb_info;
+	struct switchdev_notifier_info *info = ptr;
+	struct net_device *br_dev;
 
-	if (!mlxsw_sp_port_dev_lower_find_rcu(dev))
+	/* Tunnel devices are not our uppers, so check their master instead */
+	br_dev = netdev_master_upper_dev_get_rcu(dev);
+	if (!br_dev)
+		return NOTIFY_DONE;
+	if (!netif_is_bridge_master(br_dev))
+		return NOTIFY_DONE;
+	if (!mlxsw_sp_port_dev_lower_find_rcu(br_dev))
 		return NOTIFY_DONE;
 
 	switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
 	if (!switchdev_work)
 		return NOTIFY_BAD;
 
-	INIT_WORK(&switchdev_work->work, mlxsw_sp_switchdev_event_work);
 	switchdev_work->dev = dev;
 	switchdev_work->event = event;
 
@@ -2362,6 +2368,11 @@ static int mlxsw_sp_switchdev_event(struct notifier_block *unused,
 	case SWITCHDEV_FDB_DEL_TO_DEVICE: /* fall through */
 	case SWITCHDEV_FDB_ADD_TO_BRIDGE: /* fall through */
 	case SWITCHDEV_FDB_DEL_TO_BRIDGE:
+		fdb_info = container_of(info,
+					struct switchdev_notifier_fdb_info,
+					info);
+		INIT_WORK(&switchdev_work->work,
+			  mlxsw_sp_switchdev_bridge_fdb_event_work);
 		memcpy(&switchdev_work->fdb_info, ptr,
 		       sizeof(switchdev_work->fdb_info));
 		switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC);

drivers/net/ethernet/mellanox/mlxsw/trap.h

@@ -24,6 +24,7 @@ enum {
 	MLXSW_TRAP_ID_IGMP_V3_REPORT = 0x34,
 	MLXSW_TRAP_ID_PKT_SAMPLE = 0x38,
 	MLXSW_TRAP_ID_FID_MISS = 0x3D,
+	MLXSW_TRAP_ID_DECAP_ECN0 = 0x40,
 	MLXSW_TRAP_ID_ARPBC = 0x50,
 	MLXSW_TRAP_ID_ARPUC = 0x51,
 	MLXSW_TRAP_ID_MTUERROR = 0x52,
@@ -59,6 +60,7 @@ enum {
 	MLXSW_TRAP_ID_IPV6_MC_LINK_LOCAL_DEST = 0x91,
 	MLXSW_TRAP_ID_HOST_MISS_IPV6 = 0x92,
 	MLXSW_TRAP_ID_IPIP_DECAP_ERROR = 0xB1,
+	MLXSW_TRAP_ID_NVE_ENCAP_ARP = 0xBD,
 	MLXSW_TRAP_ID_ROUTER_ALERT_IPV4 = 0xD6,
 	MLXSW_TRAP_ID_ROUTER_ALERT_IPV6 = 0xD7,
 	MLXSW_TRAP_ID_ACL0 = 0x1C0,