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/* 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_LL2_OOO_DEF_TX_SIZE (256)
#define QED_IWARP_MAX_OOO (16)
#define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384)
#define QED_IWARP_HANDLE_INVAL (0xff)
struct qed_iwarp_ll2_buff {
struct qed_iwarp_ll2_buff *piggy_buf;
void *data;
dma_addr_t data_phys_addr;
u32 buff_size;
};
struct qed_iwarp_ll2_mpa_buf {
struct list_head list_entry;
struct qed_iwarp_ll2_buff *ll2_buf;
struct unaligned_opaque_data data;
u16 tcp_payload_len;
u8 placement_offset;
};
/* In some cases a fpdu will arrive with only one byte of the header, in this
* case the fpdu_length will be partial (contain only higher byte and
* incomplete bytes will contain the invalid value
*/
#define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff
struct qed_iwarp_fpdu {
struct qed_iwarp_ll2_buff *mpa_buf;
void *mpa_frag_virt;
dma_addr_t mpa_frag;
dma_addr_t pkt_hdr;
u16 mpa_frag_len;
u16 fpdu_length;
u16 incomplete_bytes;
u8 pkt_hdr_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 */
struct list_head mpa_buf_list; /* list of mpa_bufs */
struct list_head mpa_buf_pending_list;
spinlock_t iw_lock; /* for iwarp resources */
spinlock_t qp_lock; /* for teardown races */
u32 rcv_wnd_scale;
u16 rcv_wnd_size;
u16 max_mtu;
u8 mac_addr[ETH_ALEN];
u8 crc_needed;
u8 tcp_flags;
u8 ll2_syn_handle;
u8 ll2_ooo_handle;
u8 ll2_mpa_handle;
u8 peer2peer;
enum mpa_negotiation_mode mpa_rev;
enum mpa_rtr_type rtr_type;
struct qed_iwarp_fpdu *partial_fpdus;
struct qed_iwarp_ll2_mpa_buf *mpa_bufs;
u8 *mpa_intermediate_buf;
u16 max_num_partial_fpdus;
};
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_rdma_start_in_params *params);
void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
struct iwarp_init_func_ramrod_data *p_ramrod);
int qed_iwarp_stop(struct qed_hwfn *p_hwfn);
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
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