Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 233 insertions, 22 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
index 6a979a0..b698fb4 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c
@@ -310,9 +310,33 @@ struct mlxsw_afa_block {
 	struct mlxsw_afa_set *first_set;
 	struct mlxsw_afa_set *cur_set;
 	unsigned int cur_act_index; /* In current set. */
-	struct list_head fwd_entry_ref_list;
+	struct list_head resource_list; /* List of resources held by actions
+					 * in this block.
+					 */
 };
 
+struct mlxsw_afa_resource {
+	struct list_head list;
+	void (*destructor)(struct mlxsw_afa_block *block,
+			   struct mlxsw_afa_resource *resource);
+};
+
+static void mlxsw_afa_resource_add(struct mlxsw_afa_block *block,
+				   struct mlxsw_afa_resource *resource)
+{
+	list_add(&resource->list, &block->resource_list);
+}
+
+static void mlxsw_afa_resources_destroy(struct mlxsw_afa_block *block)
+{
+	struct mlxsw_afa_resource *resource, *tmp;
+
+	list_for_each_entry_safe(resource, tmp, &block->resource_list, list) {
+		list_del(&resource->list);
+		resource->destructor(block, resource);
+	}
+}
+
 struct mlxsw_afa_block *mlxsw_afa_block_create(struct mlxsw_afa *mlxsw_afa)
 {
 	struct mlxsw_afa_block *block;
@@ -320,7 +344,7 @@ struct mlxsw_afa_block *mlxsw_afa_block_create(struct mlxsw_afa *mlxsw_afa)
 	block = kzalloc(sizeof(*block), GFP_KERNEL);
 	if (!block)
 		return NULL;
-	INIT_LIST_HEAD(&block->fwd_entry_ref_list);
+	INIT_LIST_HEAD(&block->resource_list);
 	block->afa = mlxsw_afa;
 
 	/* At least one action set is always present, so just create it here */
@@ -336,8 +360,6 @@ err_first_set_create:
 }
 EXPORT_SYMBOL(mlxsw_afa_block_create);
 
-static void mlxsw_afa_fwd_entry_refs_destroy(struct mlxsw_afa_block *block);
-
 void mlxsw_afa_block_destroy(struct mlxsw_afa_block *block)
 {
 	struct mlxsw_afa_set *set = block->first_set;
@@ -348,7 +370,7 @@ void mlxsw_afa_block_destroy(struct mlxsw_afa_block *block)
 		mlxsw_afa_set_put(block->afa, set);
 		set = next_set;
 	} while (set);
-	mlxsw_afa_fwd_entry_refs_destroy(block);
+	mlxsw_afa_resources_destroy(block);
 	kfree(block);
 }
 EXPORT_SYMBOL(mlxsw_afa_block_destroy);
@@ -489,10 +511,29 @@ static void mlxsw_afa_fwd_entry_put(struct mlxsw_afa *mlxsw_afa,
 }
 
 struct mlxsw_afa_fwd_entry_ref {
-	struct list_head list;
+	struct mlxsw_afa_resource resource;
 	struct mlxsw_afa_fwd_entry *fwd_entry;
 };
 
+static void
+mlxsw_afa_fwd_entry_ref_destroy(struct mlxsw_afa_block *block,
+				struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref)
+{
+	mlxsw_afa_fwd_entry_put(block->afa, fwd_entry_ref->fwd_entry);
+	kfree(fwd_entry_ref);
+}
+
+static void
+mlxsw_afa_fwd_entry_ref_destructor(struct mlxsw_afa_block *block,
+				   struct mlxsw_afa_resource *resource)
+{
+	struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref;
+
+	fwd_entry_ref = container_of(resource, struct mlxsw_afa_fwd_entry_ref,
+				     resource);
+	mlxsw_afa_fwd_entry_ref_destroy(block, fwd_entry_ref);
+}
+
 static struct mlxsw_afa_fwd_entry_ref *
 mlxsw_afa_fwd_entry_ref_create(struct mlxsw_afa_block *block, u8 local_port)
 {
@@ -509,7 +550,8 @@ mlxsw_afa_fwd_entry_ref_create(struct mlxsw_afa_block *block, u8 local_port)
 		goto err_fwd_entry_get;
 	}
 	fwd_entry_ref->fwd_entry = fwd_entry;
-	list_add(&fwd_entry_ref->list, &block->fwd_entry_ref_list);
+	fwd_entry_ref->resource.destructor = mlxsw_afa_fwd_entry_ref_destructor;
+	mlxsw_afa_resource_add(block, &fwd_entry_ref->resource);
 	return fwd_entry_ref;
 
 err_fwd_entry_get:
@@ -517,23 +559,51 @@ err_fwd_entry_get:
 	return ERR_PTR(err);
 }
 
+struct mlxsw_afa_counter {
+	struct mlxsw_afa_resource resource;
+	u32 counter_index;
+};
+
 static void
-mlxsw_afa_fwd_entry_ref_destroy(struct mlxsw_afa_block *block,
-				struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref)
+mlxsw_afa_counter_destroy(struct mlxsw_afa_block *block,
+			  struct mlxsw_afa_counter *counter)
 {
-	list_del(&fwd_entry_ref->list);
-	mlxsw_afa_fwd_entry_put(block->afa, fwd_entry_ref->fwd_entry);
-	kfree(fwd_entry_ref);
+	block->afa->ops->counter_index_put(block->afa->ops_priv,
+					   counter->counter_index);
+	kfree(counter);
+}
+
+static void
+mlxsw_afa_counter_destructor(struct mlxsw_afa_block *block,
+			     struct mlxsw_afa_resource *resource)
+{
+	struct mlxsw_afa_counter *counter;
+
+	counter = container_of(resource, struct mlxsw_afa_counter, resource);
+	mlxsw_afa_counter_destroy(block, counter);
 }
 
-static void mlxsw_afa_fwd_entry_refs_destroy(struct mlxsw_afa_block *block)
+static struct mlxsw_afa_counter *
+mlxsw_afa_counter_create(struct mlxsw_afa_block *block)
 {
-	struct mlxsw_afa_fwd_entry_ref *fwd_entry_ref;
-	struct mlxsw_afa_fwd_entry_ref *tmp;
+	struct mlxsw_afa_counter *counter;
+	int err;
+
+	counter = kzalloc(sizeof(*counter), GFP_KERNEL);
+	if (!counter)
+		return ERR_PTR(-ENOMEM);
+
+	err = block->afa->ops->counter_index_get(block->afa->ops_priv,
+						 &counter->counter_index);
+	if (err)
+		goto err_counter_index_get;
+	counter->resource.destructor = mlxsw_afa_counter_destructor;
+	mlxsw_afa_resource_add(block, &counter->resource);
+	return counter;
 
-	list_for_each_entry_safe(fwd_entry_ref, tmp,
-				 &block->fwd_entry_ref_list, list)
-		mlxsw_afa_fwd_entry_ref_destroy(block, fwd_entry_ref);
+err_counter_index_get:
+	kfree(counter);
+	return ERR_PTR(err);
 }
 
 #define MLXSW_AFA_ONE_ACTION_LEN 32
@@ -690,6 +760,16 @@ MLXSW_ITEM32(afa, trapdisc, forward_action, 0x00, 0, 4);
  */
 MLXSW_ITEM32(afa, trapdisc, trap_id, 0x04, 0, 9);
 
+/* afa_trapdisc_mirror_agent
+ * Mirror agent.
+ */
+MLXSW_ITEM32(afa, trapdisc, mirror_agent, 0x08, 29, 3);
+
+/* afa_trapdisc_mirror_enable
+ * Mirror enable.
+ */
+MLXSW_ITEM32(afa, trapdisc, mirror_enable, 0x08, 24, 1);
+
 static inline void
 mlxsw_afa_trapdisc_pack(char *payload,
 			enum mlxsw_afa_trapdisc_trap_action trap_action,
@@ -701,6 +781,14 @@ mlxsw_afa_trapdisc_pack(char *payload,
 	mlxsw_afa_trapdisc_trap_id_set(payload, trap_id);
 }
 
+static inline void
+mlxsw_afa_trapdisc_mirror_pack(char *payload, bool mirror_enable,
+			       u8 mirror_agent)
+{
+	mlxsw_afa_trapdisc_mirror_enable_set(payload, mirror_enable);
+	mlxsw_afa_trapdisc_mirror_agent_set(payload, mirror_agent);
+}
+
 int mlxsw_afa_block_append_drop(struct mlxsw_afa_block *block)
 {
 	char *act = mlxsw_afa_block_append_action(block,
@@ -746,6 +834,104 @@ int mlxsw_afa_block_append_trap_and_forward(struct mlxsw_afa_block *block,
 }
 EXPORT_SYMBOL(mlxsw_afa_block_append_trap_and_forward);
 
+struct mlxsw_afa_mirror {
+	struct mlxsw_afa_resource resource;
+	int span_id;
+	u8 local_in_port;
+	u8 local_out_port;
+	bool ingress;
+};
+
+static void
+mlxsw_afa_mirror_destroy(struct mlxsw_afa_block *block,
+			 struct mlxsw_afa_mirror *mirror)
+{
+	block->afa->ops->mirror_del(block->afa->ops_priv,
+				    mirror->local_in_port,
+				    mirror->local_out_port,
+				    mirror->ingress);
+	kfree(mirror);
+}
+
+static void
+mlxsw_afa_mirror_destructor(struct mlxsw_afa_block *block,
+			    struct mlxsw_afa_resource *resource)
+{
+	struct mlxsw_afa_mirror *mirror;
+
+	mirror = container_of(resource, struct mlxsw_afa_mirror, resource);
+	mlxsw_afa_mirror_destroy(block, mirror);
+}
+
+static struct mlxsw_afa_mirror *
+mlxsw_afa_mirror_create(struct mlxsw_afa_block *block,
+			u8 local_in_port, u8 local_out_port,
+			bool ingress)
+{
+	struct mlxsw_afa_mirror *mirror;
+	int err;
+
+	mirror = kzalloc(sizeof(*mirror), GFP_KERNEL);
+	if (!mirror)
+		return ERR_PTR(-ENOMEM);
+
+	err = block->afa->ops->mirror_add(block->afa->ops_priv,
+					  local_in_port, local_out_port,
+					  ingress, &mirror->span_id);
+	if (err)
+		goto err_mirror_add;
+
+	mirror->ingress = ingress;
+	mirror->local_out_port = local_out_port;
+	mirror->local_in_port = local_in_port;
+	mirror->resource.destructor = mlxsw_afa_mirror_destructor;
+	mlxsw_afa_resource_add(block, &mirror->resource);
+	return mirror;
+
+err_mirror_add:
+	kfree(mirror);
+	return ERR_PTR(err);
+}
+
+static int
+mlxsw_afa_block_append_allocated_mirror(struct mlxsw_afa_block *block,
+					u8 mirror_agent)
+{
+	char *act = mlxsw_afa_block_append_action(block,
+						  MLXSW_AFA_TRAPDISC_CODE,
+						  MLXSW_AFA_TRAPDISC_SIZE);
+	if (!act)
+		return -ENOBUFS;
+	mlxsw_afa_trapdisc_pack(act, MLXSW_AFA_TRAPDISC_TRAP_ACTION_NOP,
+				MLXSW_AFA_TRAPDISC_FORWARD_ACTION_FORWARD, 0);
+	mlxsw_afa_trapdisc_mirror_pack(act, true, mirror_agent);
+	return 0;
+}
+
+int
+mlxsw_afa_block_append_mirror(struct mlxsw_afa_block *block,
+			      u8 local_in_port, u8 local_out_port, bool ingress)
+{
+	struct mlxsw_afa_mirror *mirror;
+	int err;
+
+	mirror = mlxsw_afa_mirror_create(block, local_in_port, local_out_port,
+					 ingress);
+	if (IS_ERR(mirror))
+		return PTR_ERR(mirror);
+
+	err = mlxsw_afa_block_append_allocated_mirror(block, mirror->span_id);
+	if (err)
+		goto err_append_allocated_mirror;
+
+	return 0;
+
+err_append_allocated_mirror:
+	mlxsw_afa_mirror_destroy(block, mirror);
+	return err;
+}
+EXPORT_SYMBOL(mlxsw_afa_block_append_mirror);
+
 /* Forwarding Action
  * -----------------
  * Forwarding Action can be used to implement Policy Based Switching (PBS)
@@ -853,11 +1039,10 @@ mlxsw_afa_polcnt_pack(char *payload,
 	mlxsw_afa_polcnt_counter_index_set(payload, counter_index);
 }
 
-int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block,
-				   u32 counter_index)
+int mlxsw_afa_block_append_allocated_counter(struct mlxsw_afa_block *block,
+					     u32 counter_index)
 {
-	char *act = mlxsw_afa_block_append_action(block,
-						  MLXSW_AFA_POLCNT_CODE,
+	char *act = mlxsw_afa_block_append_action(block, MLXSW_AFA_POLCNT_CODE,
 						  MLXSW_AFA_POLCNT_SIZE);
 	if (!act)
 		return -ENOBUFS;
@@ -865,6 +1050,32 @@ int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block,
 			      counter_index);
 	return 0;
 }
+EXPORT_SYMBOL(mlxsw_afa_block_append_allocated_counter);
+
+int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block,
+				   u32 *p_counter_index)
+{
+	struct mlxsw_afa_counter *counter;
+	u32 counter_index;
+	int err;
+
+	counter = mlxsw_afa_counter_create(block);
+	if (IS_ERR(counter))
+		return PTR_ERR(counter);
+	counter_index = counter->counter_index;
+
+	err = mlxsw_afa_block_append_allocated_counter(block, counter_index);
+	if (err)
+		goto err_append_allocated_counter;
+
+	if (p_counter_index)
+		*p_counter_index = counter_index;
+	return 0;
+
+err_append_allocated_counter:
+	mlxsw_afa_counter_destroy(block, counter);
+	return err;
+}
 EXPORT_SYMBOL(mlxsw_afa_block_append_counter);
 
 /* Virtual Router and Forwarding Domain Action