[linux-2.6-block.git] / drivers / net / ethernet / qlogic / qed / qed_iwarp.h

/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and /or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#ifndef _QED_IWARP_H
#define _QED_IWARP_H

enum qed_iwarp_qp_state {
	QED_IWARP_QP_STATE_IDLE,
	QED_IWARP_QP_STATE_RTS,
	QED_IWARP_QP_STATE_TERMINATE,
	QED_IWARP_QP_STATE_CLOSING,
	QED_IWARP_QP_STATE_ERROR,
};

enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);

#define QED_IWARP_PREALLOC_CNT  (256)

#define QED_IWARP_LL2_SYN_TX_SIZE       (128)
#define QED_IWARP_LL2_SYN_RX_SIZE       (256)
#define QED_IWARP_MAX_SYN_PKT_SIZE      (128)
#define QED_IWARP_HANDLE_INVAL			(0xff)

struct qed_iwarp_ll2_buff {
	void *data;
	dma_addr_t data_phys_addr;
	u32 buff_size;
};

struct qed_iwarp_info {
	struct list_head listen_list;	/* qed_iwarp_listener */
	struct list_head ep_list;	/* qed_iwarp_ep */
	struct list_head ep_free_list;	/* pre-allocated ep's */
	spinlock_t iw_lock;	/* for iwarp resources */
	spinlock_t qp_lock;	/* for teardown races */
	u32 rcv_wnd_scale;
	u16 max_mtu;
	u8 mac_addr[ETH_ALEN];
	u8 crc_needed;
	u8 tcp_flags;
	u8 ll2_syn_handle;
	u8 peer2peer;
	enum mpa_negotiation_mode mpa_rev;
	enum mpa_rtr_type rtr_type;
};

enum qed_iwarp_ep_state {
	QED_IWARP_EP_INIT,
	QED_IWARP_EP_MPA_REQ_RCVD,
	QED_IWARP_EP_MPA_OFFLOADED,
	QED_IWARP_EP_ESTABLISHED,
	QED_IWARP_EP_CLOSED
};

union async_output {
	struct iwarp_eqe_data_mpa_async_completion mpa_response;
	struct iwarp_eqe_data_tcp_async_completion mpa_request;
};

#define QED_MAX_PRIV_DATA_LEN (512)
struct qed_iwarp_ep_memory {
	u8 in_pdata[QED_MAX_PRIV_DATA_LEN];
	u8 out_pdata[QED_MAX_PRIV_DATA_LEN];
	union async_output async_output;
};

/* Endpoint structure represents a TCP connection. This connection can be
 * associated with a QP or not (in which case QP==NULL)
 */
struct qed_iwarp_ep {
	struct list_head list_entry;
	struct qed_rdma_qp *qp;
	struct qed_iwarp_ep_memory *ep_buffer_virt;
	dma_addr_t ep_buffer_phys;
	enum qed_iwarp_ep_state state;
	int sig;
	struct qed_iwarp_cm_info cm_info;
	enum tcp_connect_mode connect_mode;
	enum mpa_rtr_type rtr_type;
	enum mpa_negotiation_mode mpa_rev;
	u32 tcp_cid;
	u32 cid;
	u16 mss;
	u8 remote_mac_addr[6];
	u8 local_mac_addr[6];
	bool mpa_reply_processed;

	/* For Passive side - syn packet related data */
	u16 syn_ip_payload_length;
	struct qed_iwarp_ll2_buff *syn;
	dma_addr_t syn_phy_addr;

	/* The event_cb function is called for asynchrounous events associated
	 * with the ep. It is initialized at different entry points depending
	 * on whether the ep is the tcp connection active side or passive side
	 * The cb_context is passed to the event_cb function.
	 */
	iwarp_event_handler event_cb;
	void *cb_context;
};

struct qed_iwarp_listener {
	struct list_head list_entry;

	/* The event_cb function is called for connection requests.
	 * The cb_context is passed to the event_cb function.
	 */
	iwarp_event_handler event_cb;
	void *cb_context;
	u32 max_backlog;
	u32 ip_addr[4];
	u16 port;
	u16 vlan;
	u8 ip_version;
};

int qed_iwarp_alloc(struct qed_hwfn *p_hwfn);

int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
		    struct qed_rdma_start_in_params *params);

int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn);

void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn);

void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
			struct qed_rdma_qp *qp,
			struct qed_rdma_create_qp_out_params *out_params);

int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp,
			enum qed_iwarp_qp_state new_state, bool internal);

int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);

int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);

void qed_iwarp_query_qp(struct qed_rdma_qp *qp,
			struct qed_rdma_query_qp_out_params *out_params);

int
qed_iwarp_connect(void *rdma_cxt,
		  struct qed_iwarp_connect_in *iparams,
		  struct qed_iwarp_connect_out *oparams);

int
qed_iwarp_create_listen(void *rdma_cxt,
			struct qed_iwarp_listen_in *iparams,
			struct qed_iwarp_listen_out *oparams);

int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams);

int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams);
int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle);

int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams);

#endif
Commit	Line	Data
67b40dcc KM	1	/* QLogic qed NIC Driver
	2	* Copyright (c) 2015-2017 QLogic Corporation
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and /or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32	#ifndef _QED_IWARP_H
	33	#define _QED_IWARP_H
	34
	35	enum qed_iwarp_qp_state {
	36	QED_IWARP_QP_STATE_IDLE,
	37	QED_IWARP_QP_STATE_RTS,
	38	QED_IWARP_QP_STATE_TERMINATE,
	39	QED_IWARP_QP_STATE_CLOSING,
	40	QED_IWARP_QP_STATE_ERROR,
	41	};
	42
	43	enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);
	44
456a5849 KM	45	#define QED_IWARP_PREALLOC_CNT (256)
456a5849 KM	46
b5c29ca7 KM	47	#define QED_IWARP_LL2_SYN_TX_SIZE (128)
	48	#define QED_IWARP_LL2_SYN_RX_SIZE (256)
	49	#define QED_IWARP_MAX_SYN_PKT_SIZE (128)
	50	#define QED_IWARP_HANDLE_INVAL (0xff)
	51
	52	struct qed_iwarp_ll2_buff {
	53	void *data;
	54	dma_addr_t data_phys_addr;
	55	u32 buff_size;
	56	};
	57
67b40dcc	58	struct qed_iwarp_info {
65a91a6c	59	struct list_head listen_list; /* qed_iwarp_listener */
456a5849 KM	60	struct list_head ep_list; /* qed_iwarp_ep */
456a5849 KM	61	struct list_head ep_free_list; /* pre-allocated ep's */
67b40dcc KM	62	spinlock_t iw_lock; /* for iwarp resources */
	63	spinlock_t qp_lock; /* for teardown races */
	64	u32 rcv_wnd_scale;
	65	u16 max_mtu;
	66	u8 mac_addr[ETH_ALEN];
	67	u8 crc_needed;
	68	u8 tcp_flags;
b5c29ca7	69	u8 ll2_syn_handle;
67b40dcc KM	70	u8 peer2peer;
	71	enum mpa_negotiation_mode mpa_rev;
	72	enum mpa_rtr_type rtr_type;
	73	};
	74
456a5849 KM	75	enum qed_iwarp_ep_state {
	76	QED_IWARP_EP_INIT,
	77	QED_IWARP_EP_MPA_REQ_RCVD,
	78	QED_IWARP_EP_MPA_OFFLOADED,
	79	QED_IWARP_EP_ESTABLISHED,
	80	QED_IWARP_EP_CLOSED
	81	};
	82
	83	union async_output {
	84	struct iwarp_eqe_data_mpa_async_completion mpa_response;
	85	struct iwarp_eqe_data_tcp_async_completion mpa_request;
	86	};
	87
	88	#define QED_MAX_PRIV_DATA_LEN (512)
	89	struct qed_iwarp_ep_memory {
	90	u8 in_pdata[QED_MAX_PRIV_DATA_LEN];
	91	u8 out_pdata[QED_MAX_PRIV_DATA_LEN];
	92	union async_output async_output;
	93	};
	94
	95	/* Endpoint structure represents a TCP connection. This connection can be
	96	* associated with a QP or not (in which case QP==NULL)
	97	*/
	98	struct qed_iwarp_ep {
	99	struct list_head list_entry;
	100	struct qed_rdma_qp *qp;
	101	struct qed_iwarp_ep_memory *ep_buffer_virt;
	102	dma_addr_t ep_buffer_phys;
	103	enum qed_iwarp_ep_state state;
	104	int sig;
	105	struct qed_iwarp_cm_info cm_info;
	106	enum tcp_connect_mode connect_mode;
	107	enum mpa_rtr_type rtr_type;
	108	enum mpa_negotiation_mode mpa_rev;
	109	u32 tcp_cid;
	110	u32 cid;
	111	u16 mss;
	112	u8 remote_mac_addr[6];
	113	u8 local_mac_addr[6];
	114	bool mpa_reply_processed;
	115
	116	/* For Passive side - syn packet related data */
	117	u16 syn_ip_payload_length;
	118	struct qed_iwarp_ll2_buff *syn;
	119	dma_addr_t syn_phy_addr;
	120
	121	/* The event_cb function is called for asynchrounous events associated
	122	* with the ep. It is initialized at different entry points depending
	123	* on whether the ep is the tcp connection active side or passive side
	124	* The cb_context is passed to the event_cb function.
	125	*/
	126	iwarp_event_handler event_cb;
	127	void *cb_context;
	128	};
	129
65a91a6c KM	130	struct qed_iwarp_listener {
	131	struct list_head list_entry;
	132
	133	/* The event_cb function is called for connection requests.
	134	* The cb_context is passed to the event_cb function.
	135	*/
	136	iwarp_event_handler event_cb;
	137	void *cb_context;
	138	u32 max_backlog;
	139	u32 ip_addr[4];
	140	u16 port;
	141	u16 vlan;
	142	u8 ip_version;
	143	};
	144
67b40dcc KM	145	int qed_iwarp_alloc(struct qed_hwfn *p_hwfn);
	146
	147	int qed_iwarp_setup(struct qed_hwfn p_hwfn, struct qed_ptt p_ptt,
	148	struct qed_rdma_start_in_params *params);
	149
	150	int qed_iwarp_stop(struct qed_hwfn p_hwfn, struct qed_ptt p_ptt);
	151
	152	void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn);
	153
	154	void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn);
	155
	156	void qed_iwarp_init_hw(struct qed_hwfn p_hwfn, struct qed_ptt p_ptt);
	157
	158	int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
	159	struct qed_rdma_qp *qp,
	160	struct qed_rdma_create_qp_out_params *out_params);
	161
	162	int qed_iwarp_modify_qp(struct qed_hwfn p_hwfn, struct qed_rdma_qp qp,
	163	enum qed_iwarp_qp_state new_state, bool internal);
	164
	165	int qed_iwarp_destroy_qp(struct qed_hwfn p_hwfn, struct qed_rdma_qp qp);
	166
	167	int qed_iwarp_fw_destroy(struct qed_hwfn p_hwfn, struct qed_rdma_qp qp);
	168
	169	void qed_iwarp_query_qp(struct qed_rdma_qp *qp,
	170	struct qed_rdma_query_qp_out_params *out_params);
	171
4b0fdd7c KM	172	int
	173	qed_iwarp_connect(void *rdma_cxt,
	174	struct qed_iwarp_connect_in *iparams,
	175	struct qed_iwarp_connect_out *oparams);
	176
65a91a6c KM	177	int
	178	qed_iwarp_create_listen(void *rdma_cxt,
	179	struct qed_iwarp_listen_in *iparams,
	180	struct qed_iwarp_listen_out *oparams);
	181
456a5849 KM	182	int qed_iwarp_accept(void rdma_cxt, struct qed_iwarp_accept_in iparams);
	183
	184	int qed_iwarp_reject(void rdma_cxt, struct qed_iwarp_reject_in iparams);
65a91a6c KM	185	int qed_iwarp_destroy_listen(void rdma_cxt, void handle);
65a91a6c KM	186
4b0fdd7c KM	187	int qed_iwarp_send_rtr(void rdma_cxt, struct qed_iwarp_send_rtr_in iparams);
4b0fdd7c KM	188
67b40dcc	189	#endif