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Commit c82e9aa0 authored by Eli Cohen's avatar Eli Cohen Committed by David S. Miller
Browse files

mlx4_core: resource tracking for HCA resources used by guests 



The resource tracker is used to track usage of HCA resources by the different
guests.

Virtual functions (VFs) are attached to guest operating systems but
resources are allocated from the same pool and are assigned to VFs. It is
essential that hostile/buggy guests not be able to affect the operation of
other VFs, possibly attached to other guest OSs since ConnectX firmware is not
tolerant to misuse of resources.

The resource tracker module associates each resource with a VF and maintains
state information for the allocated object. It also defines allowed state
transitions and enforces them.

Relationships between resources are also referred to. For example, CQs are
pointed to by QPs, so it is forbidden to destroy a CQ if a QP refers to it.

ICM memory is always accessible through the primary function and hence it is
allocated by the owner of the primary function.

When a guest dies, an FLR is generated for all the VFs it owns and all the
resources it used are freed.

The tracked resource types are: QPs, CQs, SRQs, MPTs, MTTs, MACs, RES_EQs,
and XRCDNs.

Signed-off-by: default avatarEli Cohen <eli@mellanox.co.il>
Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent acba2420

drivers/net/ethernet/mellanox/mlx4/Makefile

+1 −1
Original line number Diff line number Diff line 
obj-$(CONFIG_MLX4_CORE)		+= mlx4_core.o



mlx4_core-y :=	alloc.o catas.o cmd.o cq.o eq.o fw.o icm.o intf.o main.o mcg.o \

		mr.o pd.o port.o profile.o qp.o reset.o sense.o srq.o

		mr.o pd.o port.o profile.o qp.o reset.o sense.o srq.o resource_tracker.o



obj-$(CONFIG_MLX4_EN)               += mlx4_en.o

drivers/net/ethernet/mellanox/mlx4/cmd.c

+399 −6
Original line number Diff line number Diff line
@@ -172,12 +172,6 @@ static void mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param) 
	mmiowb();

}



/* dummy procedure for this patch */

int mlx4_GEN_EQE(struct mlx4_dev *dev, int slave, struct mlx4_eqe *eqe)

{

	return 0;

}



static int mlx4_comm_cmd_poll(struct mlx4_dev *dev, u8 cmd, u16 param,

		       unsigned long timeout)

{
@@ -614,6 +608,403 @@ static struct mlx4_cmd_info cmd_info[] = { 
		.verify = NULL,

		.wrapper = NULL

	},

	{

		.opcode = MLX4_CMD_QUERY_FUNC_CAP,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QUERY_FUNC_CAP_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_ADAPTER,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = NULL

	},

	{

		.opcode = MLX4_CMD_INIT_PORT,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_INIT_PORT_wrapper

	},

	{

		.opcode = MLX4_CMD_CLOSE_PORT,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm  = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_CLOSE_PORT_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_PORT,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QUERY_PORT_wrapper

	},

	{

		.opcode = MLX4_CMD_MAP_EQ,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_MAP_EQ_wrapper

	},

	{

		.opcode = MLX4_CMD_SW2HW_EQ,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_SW2HW_EQ_wrapper

	},

	{

		.opcode = MLX4_CMD_HW_HEALTH_CHECK,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = NULL

	},

	{

		.opcode = MLX4_CMD_NOP,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = NULL

	},

	{

		.opcode = MLX4_CMD_ALLOC_RES,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = true,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_ALLOC_RES_wrapper

	},

	{

		.opcode = MLX4_CMD_FREE_RES,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_FREE_RES_wrapper

	},

	{

		.opcode = MLX4_CMD_SW2HW_MPT,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_SW2HW_MPT_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_MPT,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QUERY_MPT_wrapper

	},

	{

		.opcode = MLX4_CMD_HW2SW_MPT,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_HW2SW_MPT_wrapper

	},

	{

		.opcode = MLX4_CMD_READ_MTT,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = NULL

	},

	{

		.opcode = MLX4_CMD_WRITE_MTT,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_WRITE_MTT_wrapper

	},

	{

		.opcode = MLX4_CMD_SYNC_TPT,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = NULL

	},

	{

		.opcode = MLX4_CMD_HW2SW_EQ,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_HW2SW_EQ_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_EQ,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_QUERY_EQ_wrapper

	},

	{

		.opcode = MLX4_CMD_SW2HW_CQ,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_SW2HW_CQ_wrapper

	},

	{

		.opcode = MLX4_CMD_HW2SW_CQ,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_HW2SW_CQ_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_CQ,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QUERY_CQ_wrapper

	},

	{

		.opcode = MLX4_CMD_MODIFY_CQ,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = true,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_MODIFY_CQ_wrapper

	},

	{

		.opcode = MLX4_CMD_SW2HW_SRQ,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_SW2HW_SRQ_wrapper

	},

	{

		.opcode = MLX4_CMD_HW2SW_SRQ,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_HW2SW_SRQ_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_SRQ,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QUERY_SRQ_wrapper

	},

	{

		.opcode = MLX4_CMD_ARM_SRQ,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_ARM_SRQ_wrapper

	},

	{

		.opcode = MLX4_CMD_RST2INIT_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = true,

		.verify = NULL,

		.wrapper = mlx4_RST2INIT_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_INIT2INIT_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_INIT2RTR_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_INIT2RTR_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_RTR2RTS_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_RTS2RTS_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_SQERR2RTS_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_2ERR_QP,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_RTS2SQD_QP,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_SQD2SQD_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_SQD2RTS_QP,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_2RST_QP,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_2RST_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_QP,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_SUSPEND_QP,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_UNSUSPEND_QP,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_GEN_QP_wrapper

	},

	{

		.opcode = MLX4_CMD_QUERY_IF_STAT,

		.has_inbox = false,

		.has_outbox = true,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QUERY_IF_STAT_wrapper

	},

	/* Native multicast commands are not available for guests */

	{

		.opcode = MLX4_CMD_QP_ATTACH,

		.has_inbox = true,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = mlx4_QP_ATTACH_wrapper

	},

	{

		.opcode = MLX4_CMD_INFORM_FLR_DONE,

		.has_inbox = false,

		.has_outbox = false,

		.out_is_imm = false,

		.encode_slave_id = false,

		.verify = NULL,

		.wrapper = NULL

	},

};



static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
@@ -877,6 +1268,8 @@ static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd, 
	return;



reset_slave:

	/* cleanup any slave resources */

	mlx4_delete_all_resources_for_slave(dev, slave);

	spin_lock(&priv->mfunc.master.slave_state_lock);

	if (!slave_state[slave].is_slave_going_down)

		slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;

drivers/net/ethernet/mellanox/mlx4/cq.c

+2 −23
Original line number Diff line number Diff line
@@ -44,27 +44,6 @@ 
#include "mlx4.h"

#include "icm.h"



struct mlx4_cq_context {

	__be32			flags;

	u16			reserved1[3];

	__be16			page_offset;

	__be32			logsize_usrpage;

	__be16			cq_period;

	__be16			cq_max_count;

	u8			reserved2[3];

	u8			comp_eqn;

	u8			log_page_size;

	u8			reserved3[2];

	u8			mtt_base_addr_h;

	__be32			mtt_base_addr_l;

	__be32			last_notified_index;

	__be32			solicit_producer_index;

	__be32			consumer_index;

	__be32			producer_index;

	u32			reserved4[2];

	__be64			db_rec_addr;

};



#define MLX4_CQ_STATUS_OK		( 0 << 28)

#define MLX4_CQ_STATUS_OVERFLOW		( 9 << 28)

#define MLX4_CQ_STATUS_WRITE_FAIL	(10 << 28)
@@ -189,7 +168,7 @@ int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq, 
}

EXPORT_SYMBOL_GPL(mlx4_cq_resize);



static int __mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn)

int __mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn)

{

	struct mlx4_priv *priv = mlx4_priv(dev);

	struct mlx4_cq_table *cq_table = &priv->cq_table;
@@ -235,7 +214,7 @@ static int mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn) 
	return __mlx4_cq_alloc_icm(dev, cqn);

}



static void __mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn)

void __mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn)

{

	struct mlx4_priv *priv = mlx4_priv(dev);

	struct mlx4_cq_table *cq_table = &priv->cq_table;

drivers/net/ethernet/mellanox/mlx4/eq.c

+0 −37
Original line number Diff line number Diff line
@@ -53,30 +53,6 @@ enum { 
	MLX4_EQ_ENTRY_SIZE	= 0x20

};



/*

 * Must be packed because start is 64 bits but only aligned to 32 bits.

 */

struct mlx4_eq_context {

	__be32			flags;

	u16			reserved1[3];

	__be16			page_offset;

	u8			log_eq_size;

	u8			reserved2[4];

	u8			eq_period;

	u8			reserved3;

	u8			eq_max_count;

	u8			reserved4[3];

	u8			intr;

	u8			log_page_size;

	u8			reserved5[2];

	u8			mtt_base_addr_h;

	__be32			mtt_base_addr_l;

	u32			reserved6[2];

	__be32			consumer_index;

	__be32			producer_index;

	u32			reserved7[4];

};



#define MLX4_EQ_STATUS_OK	   ( 0 << 28)

#define MLX4_EQ_STATUS_WRITE_FAIL  (10 << 28)

#define MLX4_EQ_OWNER_SW	   ( 0 << 24)
@@ -135,19 +111,6 @@ static struct mlx4_eqe *next_slave_event_eqe(struct mlx4_slave_event_eq *slave_e 
		eqe : NULL;

}



/* dummies for now */

void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave)

{

}



int mlx4_get_slave_from_resource_id(struct mlx4_dev *dev,

				    enum mlx4_resource type,

				    int res_id, int *slave)

{

	return -ENOENT;

}

/*  end dummies */



void mlx4_gen_slave_eqe(struct work_struct *work)

{

	struct mlx4_mfunc_master_ctx *master =

drivers/net/ethernet/mellanox/mlx4/mlx4.h

+110 −0
Original line number Diff line number Diff line
@@ -224,6 +224,91 @@ struct mlx4_icm_table { 
	struct mlx4_icm	      **icm;

};



/*

 * Must be packed because mtt_seg is 64 bits but only aligned to 32 bits.

 */

struct mlx4_mpt_entry {

	__be32 flags;

	__be32 qpn;

	__be32 key;

	__be32 pd_flags;

	__be64 start;

	__be64 length;

	__be32 lkey;

	__be32 win_cnt;

	u8	reserved1[3];

	u8	mtt_rep;

	__be64 mtt_seg;

	__be32 mtt_sz;

	__be32 entity_size;

	__be32 first_byte_offset;

} __packed;



/*

 * Must be packed because start is 64 bits but only aligned to 32 bits.

 */

struct mlx4_eq_context {

	__be32			flags;

	u16			reserved1[3];

	__be16			page_offset;

	u8			log_eq_size;

	u8			reserved2[4];

	u8			eq_period;

	u8			reserved3;

	u8			eq_max_count;

	u8			reserved4[3];

	u8			intr;

	u8			log_page_size;

	u8			reserved5[2];

	u8			mtt_base_addr_h;

	__be32			mtt_base_addr_l;

	u32			reserved6[2];

	__be32			consumer_index;

	__be32			producer_index;

	u32			reserved7[4];

};



struct mlx4_cq_context {

	__be32			flags;

	u16			reserved1[3];

	__be16			page_offset;

	__be32			logsize_usrpage;

	__be16			cq_period;

	__be16			cq_max_count;

	u8			reserved2[3];

	u8			comp_eqn;

	u8			log_page_size;

	u8			reserved3[2];

	u8			mtt_base_addr_h;

	__be32			mtt_base_addr_l;

	__be32			last_notified_index;

	__be32			solicit_producer_index;

	__be32			consumer_index;

	__be32			producer_index;

	u32			reserved4[2];

	__be64			db_rec_addr;

};



struct mlx4_srq_context {

	__be32			state_logsize_srqn;

	u8			logstride;

	u8			reserved1;

	__be16			xrcd;

	__be32			pg_offset_cqn;

	u32			reserved2;

	u8			log_page_size;

	u8			reserved3[2];

	u8			mtt_base_addr_h;

	__be32			mtt_base_addr_l;

	__be32			pd;

	__be16			limit_watermark;

	__be16			wqe_cnt;

	u16			reserved4;

	__be16			wqe_counter;

	u32			reserved5;

	__be64			db_rec_addr;

};



struct mlx4_eqe {

	u8			reserved1;

	u8			type;
@@ -657,6 +742,18 @@ void mlx4_cleanup_cq_table(struct mlx4_dev *dev); 
void mlx4_cleanup_qp_table(struct mlx4_dev *dev);

void mlx4_cleanup_srq_table(struct mlx4_dev *dev);

void mlx4_cleanup_mcg_table(struct mlx4_dev *dev);

int __mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn);

void __mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn);

int __mlx4_cq_alloc_icm(struct mlx4_dev *dev, int *cqn);

void __mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn);

int __mlx4_srq_alloc_icm(struct mlx4_dev *dev, int *srqn);

void __mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn);

int __mlx4_mr_reserve(struct mlx4_dev *dev);

void __mlx4_mr_release(struct mlx4_dev *dev, u32 index);

int __mlx4_mr_alloc_icm(struct mlx4_dev *dev, u32 index);

void __mlx4_mr_free_icm(struct mlx4_dev *dev, u32 index);

u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order);

void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 first_seg, int order);



int mlx4_WRITE_MTT_wrapper(struct mlx4_dev *dev, int slave,

			   struct mlx4_vhcr *vhcr,
@@ -693,6 +790,14 @@ int mlx4_DMA_wrapper(struct mlx4_dev *dev, int slave, 
		     struct mlx4_cmd_mailbox *inbox,

		     struct mlx4_cmd_mailbox *outbox,

		     struct mlx4_cmd_info *cmd);

int __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,

			    int *base);

void __mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt);

int __mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac);

void __mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac);

int __mlx4_replace_mac(struct mlx4_dev *dev, u8 port, int qpn, u64 new_mac);

int __mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt,

		     int start_index, int npages, u64 *page_list);



void mlx4_start_catas_poll(struct mlx4_dev *dev);

void mlx4_stop_catas_poll(struct mlx4_dev *dev);
@@ -936,6 +1041,11 @@ static inline u32 get_param_h(u64 *arg) 
	return (u32)(*arg >> 32);

}



static inline spinlock_t *mlx4_tlock(struct mlx4_dev *dev)

{

	return &mlx4_priv(dev)->mfunc.master.res_tracker.lock;

}



#define NOT_MASKED_PD_BITS 17



#endif /* MLX4_H */