Merge tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - support "prefer busy polling" NAPI operation mode, where we defer
     softirq for some time expecting applications to periodically busy
     poll

   - AF_XDP: improve efficiency by more batching and hindering the
     adjacency cache prefetcher

   - af_packet: make packet_fanout.arr size configurable up to 64K

   - tcp: optimize TCP zero copy receive in presence of partial or
     unaligned reads making zero copy a performance win for much smaller
     messages

   - XDP: add bulk APIs for returning / freeing frames

   - sched: support fragmenting IP packets as they come out of conntrack

   - net: allow virtual netdevs to forward UDP L4 and fraglist GSO skbs

  BPF:

   - BPF switch from crude rlimit-based to memcg-based memory accounting

   - BPF type format information for kernel modules and related tracing
     enhancements

   - BPF implement task local storage for BPF LSM

   - allow the FENTRY/FEXIT/RAW_TP tracing programs to use
     bpf_sk_storage

  Protocols:

   - mptcp: improve multiple xmit streams support, memory accounting and
     many smaller improvements

   - TLS: support CHACHA20-POLY1305 cipher

   - seg6: add support for SRv6 End.DT4/DT6 behavior

   - sctp: Implement RFC 6951: UDP Encapsulation of SCTP

   - ppp_generic: add ability to bridge channels directly

   - bridge: Connectivity Fault Management (CFM) support as is defined
     in IEEE 802.1Q section 12.14.

  Drivers:

   - mlx5: make use of the new auxiliary bus to organize the driver
     internals

   - mlx5: more accurate port TX timestamping support

   - mlxsw:
      - improve the efficiency of offloaded next hop updates by using
        the new nexthop object API
      - support blackhole nexthops
      - support IEEE 802.1ad (Q-in-Q) bridging

   - rtw88: major bluetooth co-existance improvements

   - iwlwifi: support new 6 GHz frequency band

   - ath11k: Fast Initial Link Setup (FILS)

   - mt7915: dual band concurrent (DBDC) support

   - net: ipa: add basic support for IPA v4.5

  Refactor:

   - a few pieces of in_interrupt() cleanup work from Sebastian Andrzej
     Siewior

   - phy: add support for shared interrupts; get rid of multiple driver
     APIs and have the drivers write a full IRQ handler, slight growth
     of driver code should be compensated by the simpler API which also
     allows shared IRQs

   - add common code for handling netdev per-cpu counters

   - move TX packet re-allocation from Ethernet switch tag drivers to a
     central place

   - improve efficiency and rename nla_strlcpy

   - number of W=1 warning cleanups as we now catch those in a patchwork
     build bot

  Old code removal:

   - wan: delete the DLCI / SDLA drivers

   - wimax: move to staging

   - wifi: remove old WDS wifi bridging support"

* tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1922 commits)
  net: hns3: fix expression that is currently always true
  net: fix proc_fs init handling in af_packet and tls
  nfc: pn533: convert comma to semicolon
  af_vsock: Assign the vsock transport considering the vsock address flags
  af_vsock: Set VMADDR_FLAG_TO_HOST flag on the receive path
  vsock_addr: Check for supported flag values
  vm_sockets: Add VMADDR_FLAG_TO_HOST vsock flag
  vm_sockets: Add flags field in the vsock address data structure
  net: Disable NETIF_F_HW_TLS_TX when HW_CSUM is disabled
  tcp: Add logic to check for SYN w/ data in tcp_simple_retransmit
  net: mscc: ocelot: install MAC addresses in .ndo_set_rx_mode from process context
  nfc: s3fwrn5: Release the nfc firmware
  net: vxget: clean up sparse warnings
  mlxsw: spectrum_router: Use eXtended mezzanine to offload IPv4 router
  mlxsw: spectrum: Set KVH XLT cache mode for Spectrum2/3
  mlxsw: spectrum_router_xm: Introduce basic XM cache flushing
  mlxsw: reg: Add Router LPM Cache Enable Register
  mlxsw: reg: Add Router LPM Cache ML Delete Register
  mlxsw: spectrum_router_xm: Implement L-value tracking for M-index
  mlxsw: reg: Add XM Router M Table Register
  ...

1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
index 8418dc3ae967..2875ee8ec537 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.h
@@ -15,6 +15,27 @@ struct mlxsw_sp_router_nve_decap {
 	u8 valid:1;
 };
 
+struct mlxsw_sp_fib_entry_op_ctx {
+	u8 bulk_ok:1, /* Indicate to the low-level op it is ok to bulk
+		       * the actual entry with the one that is the next
+		       * in queue.
+		       */
+	   initialized:1; /* Bit that the low-level op sets in case
+			   * the context priv is initialized.
+			   */
+	struct list_head fib_entry_priv_list;
+	unsigned long event;
+	unsigned long ll_priv[];
+};
+
+static inline void
+mlxsw_sp_fib_entry_op_ctx_clear(struct mlxsw_sp_fib_entry_op_ctx *op_ctx)
+{
+	WARN_ON_ONCE(!list_empty(&op_ctx->fib_entry_priv_list));
+	memset(op_ctx, 0, sizeof(*op_ctx));
+	INIT_LIST_HEAD(&op_ctx->fib_entry_priv_list);
+}
+
 struct mlxsw_sp_router {
 	struct mlxsw_sp *mlxsw_sp;
 	struct mlxsw_sp_rif **rifs;
@@ -38,6 +59,7 @@ struct mlxsw_sp_router {
 	struct list_head nexthop_neighs_list;
 	struct list_head ipip_list;
 	bool aborted;
+	struct notifier_block nexthop_nb;
 	struct notifier_block fib_nb;
 	struct notifier_block netevent_nb;
 	struct notifier_block inetaddr_nb;
@@ -48,6 +70,56 @@ struct mlxsw_sp_router {
 	bool adj_discard_index_valid;
 	struct mlxsw_sp_router_nve_decap nve_decap_config;
 	struct mutex lock; /* Protects shared router resources */
+	struct work_struct fib_event_work;
+	struct list_head fib_event_queue;
+	spinlock_t fib_event_queue_lock; /* Protects fib event queue list */
+	/* One set of ops for each protocol: IPv4 and IPv6 */
+	const struct mlxsw_sp_router_ll_ops *proto_ll_ops[MLXSW_SP_L3_PROTO_MAX];
+	struct mlxsw_sp_fib_entry_op_ctx *ll_op_ctx;
+	u16 lb_rif_index;
+	struct mlxsw_sp_router_xm *xm;
+};
+
+struct mlxsw_sp_fib_entry_priv {
+	refcount_t refcnt;
+	struct list_head list; /* Member in op_ctx->fib_entry_priv_list */
+	unsigned long priv[];
+};
+
+enum mlxsw_sp_fib_entry_op {
+	MLXSW_SP_FIB_ENTRY_OP_WRITE,
+	MLXSW_SP_FIB_ENTRY_OP_UPDATE,
+	MLXSW_SP_FIB_ENTRY_OP_DELETE,
+};
+
+/* Low-level router ops. Basically this is to handle the different
+ * register sets to work with ordinary and XM trees and FIB entries.
+ */
+struct mlxsw_sp_router_ll_ops {
+	int (*init)(struct mlxsw_sp *mlxsw_sp, u16 vr_id,
+		    enum mlxsw_sp_l3proto proto);
+	int (*ralta_write)(struct mlxsw_sp *mlxsw_sp, char *xralta_pl);
+	int (*ralst_write)(struct mlxsw_sp *mlxsw_sp, char *xralst_pl);
+	int (*raltb_write)(struct mlxsw_sp *mlxsw_sp, char *xraltb_pl);
+	size_t fib_entry_op_ctx_size;
+	size_t fib_entry_priv_size;
+	void (*fib_entry_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx,
+			       enum mlxsw_sp_l3proto proto, enum mlxsw_sp_fib_entry_op op,
+			       u16 virtual_router, u8 prefix_len, unsigned char *addr,
+			       struct mlxsw_sp_fib_entry_priv *priv);
+	void (*fib_entry_act_remote_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx,
+					  enum mlxsw_reg_ralue_trap_action trap_action,
+					  u16 trap_id, u32 adjacency_index, u16 ecmp_size);
+	void (*fib_entry_act_local_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx,
+					 enum mlxsw_reg_ralue_trap_action trap_action,
+					 u16 trap_id, u16 local_erif);
+	void (*fib_entry_act_ip2me_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx);
+	void (*fib_entry_act_ip2me_tun_pack)(struct mlxsw_sp_fib_entry_op_ctx *op_ctx,
+					     u32 tunnel_ptr);
+	int (*fib_entry_commit)(struct mlxsw_sp *mlxsw_sp,
+				struct mlxsw_sp_fib_entry_op_ctx *op_ctx,
+				bool *postponed_for_bulk);
+	bool (*fib_entry_is_committed)(struct mlxsw_sp_fib_entry_priv *priv);
 };
 
 struct mlxsw_sp_rif_ipip_lb;
@@ -129,6 +201,7 @@ int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index,
 			     u32 *p_adj_size, u32 *p_adj_hash_index);
 struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh);
 bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh);
+bool mlxsw_sp_nexthop_is_discard(const struct mlxsw_sp_nexthop *nh);
 #define mlxsw_sp_nexthop_for_each(nh, router)				\
 	for (nh = mlxsw_sp_nexthop_next(router, NULL); nh;		\
 	     nh = mlxsw_sp_nexthop_next(router, nh))
@@ -150,4 +223,10 @@ static inline bool mlxsw_sp_l3addr_eq(const union mlxsw_sp_l3addr *addr1,
 int mlxsw_sp_ipip_ecn_encap_init(struct mlxsw_sp *mlxsw_sp);
 int mlxsw_sp_ipip_ecn_decap_init(struct mlxsw_sp *mlxsw_sp);
 
+extern const struct mlxsw_sp_router_ll_ops mlxsw_sp_router_ll_xm_ops;
+
+int mlxsw_sp_router_xm_init(struct mlxsw_sp *mlxsw_sp);
+void mlxsw_sp_router_xm_fini(struct mlxsw_sp *mlxsw_sp);
+bool mlxsw_sp_router_xm_ipv4_is_supported(const struct mlxsw_sp *mlxsw_sp);
+
 #endif /* _MLXSW_ROUTER_H_*/