Merge: mlxsw: Update the driver to upstream v6.15

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9/-/merge_requests/6938

JIRA: https://issues.redhat.com/browse/RHEL-94569
Tested: Using mlxsw self-tests
Depends: !6918

Signed-off-by: Ivan Vecera <ivecera@redhat.com>

Approved-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Approved-by: Kamal Heib <kheib@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Augusto Caringi <acaringi@redhat.com>

Author: caringi

drivers/net/ethernet/mellanox/mlxfw/mlxfw_fsm.c

@@ -14,7 +14,6 @@
 #define MLXFW_FSM_STATE_WAIT_TIMEOUT_MS 30000
 #define MLXFW_FSM_STATE_WAIT_ROUNDS \
 	(MLXFW_FSM_STATE_WAIT_TIMEOUT_MS / MLXFW_FSM_STATE_WAIT_CYCLE_MS)
-#define MLXFW_FSM_MAX_COMPONENT_SIZE (10 * (1 << 20))
 
 static const int mlxfw_fsm_state_errno[] = {
 	[MLXFW_FSM_STATE_ERR_ERROR] = -EIO,
@@ -229,7 +228,6 @@ static int mlxfw_flash_component(struct mlxfw_dev *mlxfw_dev,
 		return err;
 	}
 
-	comp_max_size = min_t(u32, comp_max_size, MLXFW_FSM_MAX_COMPONENT_SIZE);
 	if (comp->data_size > comp_max_size) {
 		MLXFW_ERR_MSG(mlxfw_dev, extack,
 			      "Component size is bigger than limit", -EINVAL);

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

@@ -35,6 +35,7 @@
 #include "reg.h"
 #include "resources.h"
 #include "../mlxfw/mlxfw.h"
+#include "txheader.h"
 
 static LIST_HEAD(mlxsw_core_driver_list);
 static DEFINE_SPINLOCK(mlxsw_core_driver_list_lock);
@@ -677,7 +678,7 @@ struct mlxsw_reg_trans {
 	struct list_head bulk_list;
 	struct mlxsw_core *core;
 	struct sk_buff *tx_skb;
-	struct mlxsw_tx_info tx_info;
+	struct mlxsw_txhdr_info txhdr_info;
 	struct delayed_work timeout_dw;
 	unsigned int retries;
 	u64 tid;
@@ -737,12 +738,11 @@ static int mlxsw_emad_transmit(struct mlxsw_core *mlxsw_core,
 	if (!skb)
 		return -ENOMEM;
 
-	trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), false, 0,
-			    skb->data + mlxsw_core->driver->txhdr_len,
-			    skb->len - mlxsw_core->driver->txhdr_len);
+	trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), false, 0, skb->data,
+			    skb->len);
 
 	atomic_set(&trans->active, 1);
-	err = mlxsw_core_skb_transmit(mlxsw_core, skb, &trans->tx_info);
+	err = mlxsw_core_skb_transmit(mlxsw_core, skb, &trans->txhdr_info);
 	if (err) {
 		dev_kfree_skb(skb);
 		return err;
@@ -944,7 +944,7 @@ static struct sk_buff *mlxsw_emad_alloc(const struct mlxsw_core *mlxsw_core,
 
 	emad_len = (reg_len + sizeof(u32) + MLXSW_EMAD_ETH_HDR_LEN +
 		    (MLXSW_EMAD_OP_TLV_LEN + MLXSW_EMAD_END_TLV_LEN) *
-		    sizeof(u32) + mlxsw_core->driver->txhdr_len);
+		    sizeof(u32) + MLXSW_TXHDR_LEN);
 	if (mlxsw_core->emad.enable_string_tlv)
 		emad_len += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32);
 	if (mlxsw_core->emad.enable_latency_tlv)
@@ -984,8 +984,8 @@ static int mlxsw_emad_reg_access(struct mlxsw_core *mlxsw_core,
 	list_add_tail(&trans->bulk_list, bulk_list);
 	trans->core = mlxsw_core;
 	trans->tx_skb = skb;
-	trans->tx_info.local_port = MLXSW_PORT_CPU_PORT;
-	trans->tx_info.is_emad = true;
+	trans->txhdr_info.tx_info.local_port = MLXSW_PORT_CPU_PORT;
+	trans->txhdr_info.tx_info.is_emad = true;
 	INIT_DELAYED_WORK(&trans->timeout_dw, mlxsw_emad_trans_timeout_work);
 	trans->tid = tid;
 	init_completion(&trans->completion);
@@ -995,7 +995,6 @@ static int mlxsw_emad_reg_access(struct mlxsw_core *mlxsw_core,
 	trans->type = type;
 
 	mlxsw_emad_construct(mlxsw_core, skb, reg, payload, type, trans->tid);
-	mlxsw_core->driver->txhdr_construct(skb, &trans->tx_info);
 
 	spin_lock_bh(&mlxsw_core->emad.trans_list_lock);
 	list_add_tail_rcu(&trans->list, &mlxsw_core->emad.trans_list);
@@ -2330,10 +2329,10 @@ bool mlxsw_core_skb_transmit_busy(struct mlxsw_core *mlxsw_core,
 EXPORT_SYMBOL(mlxsw_core_skb_transmit_busy);
 
 int mlxsw_core_skb_transmit(struct mlxsw_core *mlxsw_core, struct sk_buff *skb,
-			    const struct mlxsw_tx_info *tx_info)
+			    const struct mlxsw_txhdr_info *txhdr_info)
 {
 	return mlxsw_core->bus->skb_transmit(mlxsw_core->bus_priv, skb,
-					     tx_info);
+					     txhdr_info);
 }
 EXPORT_SYMBOL(mlxsw_core_skb_transmit);
 

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

@@ -72,7 +72,14 @@ struct mlxsw_tx_info {
 	bool is_emad;
 };
 
+struct mlxsw_txhdr_info {
+	struct mlxsw_tx_info tx_info;
+	bool data;
+	u16 max_fid; /* Used for PTP packets which are sent as data. */
+};
+
 struct mlxsw_rx_md_info {
+	struct napi_struct *napi;
 	u32 cookie_index;
 	u32 latency;
 	u32 tx_congestion;
@@ -94,7 +101,7 @@ struct mlxsw_rx_md_info {
 bool mlxsw_core_skb_transmit_busy(struct mlxsw_core *mlxsw_core,
 				  const struct mlxsw_tx_info *tx_info);
 int mlxsw_core_skb_transmit(struct mlxsw_core *mlxsw_core, struct sk_buff *skb,
-			    const struct mlxsw_tx_info *tx_info);
+			    const struct mlxsw_txhdr_info *txhdr_info);
 void mlxsw_core_ptp_transmitted(struct mlxsw_core *mlxsw_core,
 				struct sk_buff *skb, u16 local_port);
 
@@ -425,8 +432,6 @@ struct mlxsw_driver {
 	int (*trap_policer_counter_get)(struct mlxsw_core *mlxsw_core,
 					const struct devlink_trap_policer *policer,
 					u64 *p_drops);
-	void (*txhdr_construct)(struct sk_buff *skb,
-				const struct mlxsw_tx_info *tx_info);
 	int (*resources_register)(struct mlxsw_core *mlxsw_core);
 	int (*kvd_sizes_get)(struct mlxsw_core *mlxsw_core,
 			     const struct mlxsw_config_profile *profile,
@@ -439,7 +444,6 @@ struct mlxsw_driver {
 	void (*ptp_transmitted)(struct mlxsw_core *mlxsw_core,
 				struct sk_buff *skb, u16 local_port);
 
-	u8 txhdr_len;
 	const struct mlxsw_config_profile *profile;
 	bool sdq_supports_cqe_v2;
 };
@@ -486,7 +490,7 @@ struct mlxsw_bus {
 	bool (*skb_transmit_busy)(void *bus_priv,
 				  const struct mlxsw_tx_info *tx_info);
 	int (*skb_transmit)(void *bus_priv, struct sk_buff *skb,
-			    const struct mlxsw_tx_info *tx_info);
+			    const struct mlxsw_txhdr_info *txhdr_info);
 	int (*cmd_exec)(void *bus_priv, u16 opcode, u8 opcode_mod,
 			u32 in_mod, bool out_mbox_direct,
 			char *in_mbox, size_t in_mbox_size,

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

@@ -67,7 +67,7 @@ static bool mlxsw_afk_blocks_check(struct mlxsw_afk *mlxsw_afk)
 
 		for (j = 0; j < block->instances_count; j++) {
 			const struct mlxsw_afk_element_info *elinfo;
-			struct mlxsw_afk_element_inst *elinst;
+			const struct mlxsw_afk_element_inst *elinst;
 
 			elinst = &block->instances[j];
 			elinfo = &mlxsw_afk_element_infos[elinst->element];
@@ -154,7 +154,7 @@ static void mlxsw_afk_picker_count_hits(struct mlxsw_afk *mlxsw_afk,
 		const struct mlxsw_afk_block *block = &mlxsw_afk->blocks[i];
 
 		for (j = 0; j < block->instances_count; j++) {
-			struct mlxsw_afk_element_inst *elinst;
+			const struct mlxsw_afk_element_inst *elinst;
 
 			elinst = &block->instances[j];
 			if (elinst->element == element) {
@@ -386,7 +386,7 @@ mlxsw_afk_block_elinst_get(const struct mlxsw_afk_block *block,
 	int i;
 
 	for (i = 0; i < block->instances_count; i++) {
-		struct mlxsw_afk_element_inst *elinst;
+		const struct mlxsw_afk_element_inst *elinst;
 
 		elinst = &block->instances[i];
 		if (elinst->element == element)

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

@@ -117,7 +117,7 @@ struct mlxsw_afk_element_inst { /* element instance in actual block */
 
 struct mlxsw_afk_block {
 	u16 encoding; /* block ID */
-	struct mlxsw_afk_element_inst *instances;
+	const struct mlxsw_afk_element_inst *instances;
 	unsigned int instances_count;
 	bool high_entropy;
 };

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

@@ -1484,6 +1484,7 @@ static int mlxsw_linecard_types_init(struct mlxsw_core *mlxsw_core,
 	vfree(types_info->data);
 err_data_alloc:
 	kfree(types_info);
+	linecards->types_info = NULL;
 	return err;
 }
 

drivers/net/ethernet/mellanox/mlxsw/i2c.c

@@ -516,7 +516,7 @@ static bool mlxsw_i2c_skb_transmit_busy(void *bus_priv,
 }
 
 static int mlxsw_i2c_skb_transmit(void *bus_priv, struct sk_buff *skb,
-				  const struct mlxsw_tx_info *tx_info)
+				  const struct mlxsw_txhdr_info *txhdr_info)
 {
 	return 0;
 }

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

@@ -21,6 +21,7 @@
 #include "cmd.h"
 #include "port.h"
 #include "resources.h"
+#include "txheader.h"
 
 #define mlxsw_pci_write32(mlxsw_pci, reg, val) \
 	iowrite32be(val, (mlxsw_pci)->hw_addr + (MLXSW_PCI_ ## reg))
@@ -737,6 +738,7 @@ static void mlxsw_pci_cqe_rdq_md_init(struct sk_buff *skb, const char *cqe)
 }
 
 static void mlxsw_pci_cqe_rdq_handle(struct mlxsw_pci *mlxsw_pci,
+				     struct napi_struct *napi,
 				     struct mlxsw_pci_queue *q,
 				     u16 consumer_counter_limit,
 				     enum mlxsw_pci_cqe_v cqe_v, char *cqe)
@@ -807,6 +809,7 @@ static void mlxsw_pci_cqe_rdq_handle(struct mlxsw_pci *mlxsw_pci,
 	}
 
 	mlxsw_pci_skb_cb_ts_set(mlxsw_pci, skb, cqe_v, cqe);
+	mlxsw_skb_cb(skb)->rx_md_info.napi = napi;
 
 	mlxsw_core_skb_receive(mlxsw_pci->core, skb, &rx_info);
 
@@ -869,7 +872,7 @@ static int mlxsw_pci_napi_poll_cq_rx(struct napi_struct *napi, int budget)
 			continue;
 		}
 
-		mlxsw_pci_cqe_rdq_handle(mlxsw_pci, rdq,
+		mlxsw_pci_cqe_rdq_handle(mlxsw_pci, napi, rdq,
 					 wqe_counter, q->u.cq.v, cqe);
 
 		if (++work_done == budget)
@@ -2093,6 +2096,39 @@ static void mlxsw_pci_fini(void *bus_priv)
 	mlxsw_pci_free_irq_vectors(mlxsw_pci);
 }
 
+static int mlxsw_pci_txhdr_construct(struct sk_buff *skb,
+				     const struct mlxsw_txhdr_info *txhdr_info)
+{
+	const struct mlxsw_tx_info tx_info = txhdr_info->tx_info;
+	char *txhdr;
+
+	if (skb_cow_head(skb, MLXSW_TXHDR_LEN))
+		return -ENOMEM;
+
+	txhdr = skb_push(skb, MLXSW_TXHDR_LEN);
+	memset(txhdr, 0, MLXSW_TXHDR_LEN);
+
+	mlxsw_tx_hdr_version_set(txhdr, MLXSW_TXHDR_VERSION_1);
+	mlxsw_tx_hdr_proto_set(txhdr, MLXSW_TXHDR_PROTO_ETH);
+	mlxsw_tx_hdr_swid_set(txhdr, 0);
+
+	if (unlikely(txhdr_info->data)) {
+		u16 fid = txhdr_info->max_fid + tx_info.local_port - 1;
+
+		mlxsw_tx_hdr_rx_is_router_set(txhdr, true);
+		mlxsw_tx_hdr_fid_valid_set(txhdr, true);
+		mlxsw_tx_hdr_fid_set(txhdr, fid);
+		mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_DATA);
+	} else {
+		mlxsw_tx_hdr_ctl_set(txhdr, MLXSW_TXHDR_ETH_CTL);
+		mlxsw_tx_hdr_control_tclass_set(txhdr, 1);
+		mlxsw_tx_hdr_port_mid_set(txhdr, tx_info.local_port);
+		mlxsw_tx_hdr_type_set(txhdr, MLXSW_TXHDR_TYPE_CONTROL);
+	}
+
+	return 0;
+}
+
 static struct mlxsw_pci_queue *
 mlxsw_pci_sdq_pick(struct mlxsw_pci *mlxsw_pci,
 		   const struct mlxsw_tx_info *tx_info)
@@ -2120,7 +2156,7 @@ static bool mlxsw_pci_skb_transmit_busy(void *bus_priv,
 }
 
 static int mlxsw_pci_skb_transmit(void *bus_priv, struct sk_buff *skb,
-				  const struct mlxsw_tx_info *tx_info)
+				  const struct mlxsw_txhdr_info *txhdr_info)
 {
 	struct mlxsw_pci *mlxsw_pci = bus_priv;
 	struct mlxsw_pci_queue *q;
@@ -2129,21 +2165,25 @@ static int mlxsw_pci_skb_transmit(void *bus_priv, struct sk_buff *skb,
 	int i;
 	int err;
 
+	err = mlxsw_pci_txhdr_construct(skb, txhdr_info);
+	if (err)
+		return err;
+
 	if (skb_shinfo(skb)->nr_frags > MLXSW_PCI_WQE_SG_ENTRIES - 1) {
 		err = skb_linearize(skb);
 		if (err)
 			return err;
 	}
 
-	q = mlxsw_pci_sdq_pick(mlxsw_pci, tx_info);
+	q = mlxsw_pci_sdq_pick(mlxsw_pci, &txhdr_info->tx_info);
 	spin_lock_bh(&q->lock);
 	elem_info = mlxsw_pci_queue_elem_info_producer_get(q);
 	if (!elem_info) {
 		/* queue is full */
 		err = -EAGAIN;
 		goto unlock;
 	}
-	mlxsw_skb_cb(skb)->tx_info = *tx_info;
+	mlxsw_skb_cb(skb)->tx_info = txhdr_info->tx_info;
 	elem_info->sdq.skb = skb;
 
 	wqe = elem_info->elem;
@@ -2174,6 +2214,8 @@ static int mlxsw_pci_skb_transmit(void *bus_priv, struct sk_buff *skb,
 	for (i++; i < MLXSW_PCI_WQE_SG_ENTRIES; i++)
 		mlxsw_pci_wqe_byte_count_set(wqe, i, 0);
 
+	mlxsw_pci_wqe_ipcs_set(wqe, skb->ip_summed == CHECKSUM_PARTIAL);
+
 	/* Everything is set up, ring producer doorbell to get HW going */
 	q->producer_counter++;
 	mlxsw_pci_queue_doorbell_producer_ring(mlxsw_pci, q);

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

@@ -90,6 +90,11 @@ MLXSW_ITEM32(pci, wqe, lp, 0x00, 30, 1);
  */
 MLXSW_ITEM32(pci, wqe, type, 0x00, 23, 4);
 
+/* pci_wqe_ipcs
+ * Calculate IPv4 and TCP / UDP checksums.
+ */
+MLXSW_ITEM32(pci, wqe, ipcs, 0x00, 14, 1);
+
 /* pci_wqe_byte_count
  * Size of i-th scatter/gather entry, 0 if entry is unused.
  */