232 lines
6.8 KiB
C
232 lines
6.8 KiB
C
/* QLogic qed NIC Driver
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* Copyright (c) 2015-2017 QLogic Corporation
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and /or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _QED_IWARP_H
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#define _QED_IWARP_H
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enum qed_iwarp_qp_state {
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QED_IWARP_QP_STATE_IDLE,
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QED_IWARP_QP_STATE_RTS,
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QED_IWARP_QP_STATE_TERMINATE,
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QED_IWARP_QP_STATE_CLOSING,
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QED_IWARP_QP_STATE_ERROR,
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};
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enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);
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#define QED_IWARP_PREALLOC_CNT (256)
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#define QED_IWARP_LL2_SYN_TX_SIZE (128)
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#define QED_IWARP_LL2_SYN_RX_SIZE (256)
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#define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256)
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#define QED_IWARP_MAX_OOO (16)
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#define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384)
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#define QED_IWARP_HANDLE_INVAL (0xff)
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struct qed_iwarp_ll2_buff {
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struct qed_iwarp_ll2_buff *piggy_buf;
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void *data;
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dma_addr_t data_phys_addr;
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u32 buff_size;
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};
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struct qed_iwarp_ll2_mpa_buf {
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struct list_head list_entry;
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struct qed_iwarp_ll2_buff *ll2_buf;
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struct unaligned_opaque_data data;
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u16 tcp_payload_len;
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u8 placement_offset;
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};
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/* In some cases a fpdu will arrive with only one byte of the header, in this
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* case the fpdu_length will be partial (contain only higher byte and
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* incomplete bytes will contain the invalid value
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*/
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#define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff
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struct qed_iwarp_fpdu {
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struct qed_iwarp_ll2_buff *mpa_buf;
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void *mpa_frag_virt;
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dma_addr_t mpa_frag;
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dma_addr_t pkt_hdr;
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u16 mpa_frag_len;
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u16 fpdu_length;
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u16 incomplete_bytes;
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u8 pkt_hdr_size;
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};
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struct qed_iwarp_info {
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struct list_head listen_list; /* qed_iwarp_listener */
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struct list_head ep_list; /* qed_iwarp_ep */
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struct list_head ep_free_list; /* pre-allocated ep's */
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struct list_head mpa_buf_list; /* list of mpa_bufs */
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struct list_head mpa_buf_pending_list;
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spinlock_t iw_lock; /* for iwarp resources */
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spinlock_t qp_lock; /* for teardown races */
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u32 rcv_wnd_scale;
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u16 rcv_wnd_size;
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u16 max_mtu;
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u8 mac_addr[ETH_ALEN];
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u8 crc_needed;
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u8 tcp_flags;
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u8 ll2_syn_handle;
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u8 ll2_ooo_handle;
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u8 ll2_mpa_handle;
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u8 peer2peer;
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enum mpa_negotiation_mode mpa_rev;
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enum mpa_rtr_type rtr_type;
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struct qed_iwarp_fpdu *partial_fpdus;
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struct qed_iwarp_ll2_mpa_buf *mpa_bufs;
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u8 *mpa_intermediate_buf;
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u16 max_num_partial_fpdus;
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};
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enum qed_iwarp_ep_state {
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QED_IWARP_EP_INIT,
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QED_IWARP_EP_MPA_REQ_RCVD,
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QED_IWARP_EP_MPA_OFFLOADED,
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QED_IWARP_EP_ESTABLISHED,
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QED_IWARP_EP_CLOSED
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};
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union async_output {
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struct iwarp_eqe_data_mpa_async_completion mpa_response;
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struct iwarp_eqe_data_tcp_async_completion mpa_request;
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};
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#define QED_MAX_PRIV_DATA_LEN (512)
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struct qed_iwarp_ep_memory {
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u8 in_pdata[QED_MAX_PRIV_DATA_LEN];
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u8 out_pdata[QED_MAX_PRIV_DATA_LEN];
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union async_output async_output;
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};
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/* Endpoint structure represents a TCP connection. This connection can be
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* associated with a QP or not (in which case QP==NULL)
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*/
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struct qed_iwarp_ep {
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struct list_head list_entry;
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struct qed_rdma_qp *qp;
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struct qed_iwarp_ep_memory *ep_buffer_virt;
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dma_addr_t ep_buffer_phys;
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enum qed_iwarp_ep_state state;
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int sig;
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struct qed_iwarp_cm_info cm_info;
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enum tcp_connect_mode connect_mode;
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enum mpa_rtr_type rtr_type;
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enum mpa_negotiation_mode mpa_rev;
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u32 tcp_cid;
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u32 cid;
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u16 mss;
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u8 remote_mac_addr[6];
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u8 local_mac_addr[6];
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bool mpa_reply_processed;
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/* For Passive side - syn packet related data */
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u16 syn_ip_payload_length;
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struct qed_iwarp_ll2_buff *syn;
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dma_addr_t syn_phy_addr;
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/* The event_cb function is called for asynchrounous events associated
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* with the ep. It is initialized at different entry points depending
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* on whether the ep is the tcp connection active side or passive side
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* The cb_context is passed to the event_cb function.
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*/
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iwarp_event_handler event_cb;
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void *cb_context;
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};
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struct qed_iwarp_listener {
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struct list_head list_entry;
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/* The event_cb function is called for connection requests.
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* The cb_context is passed to the event_cb function.
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*/
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iwarp_event_handler event_cb;
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void *cb_context;
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u32 max_backlog;
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u32 ip_addr[4];
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u16 port;
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u16 vlan;
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u8 ip_version;
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};
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int qed_iwarp_alloc(struct qed_hwfn *p_hwfn);
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int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt,
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struct qed_rdma_start_in_params *params);
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void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
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struct iwarp_init_func_ramrod_data *p_ramrod);
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int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
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void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn);
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void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn);
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void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
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int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn,
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struct qed_rdma_qp *qp,
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struct qed_rdma_create_qp_out_params *out_params);
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int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp,
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enum qed_iwarp_qp_state new_state, bool internal);
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int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);
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int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);
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void qed_iwarp_query_qp(struct qed_rdma_qp *qp,
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struct qed_rdma_query_qp_out_params *out_params);
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int
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qed_iwarp_connect(void *rdma_cxt,
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struct qed_iwarp_connect_in *iparams,
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struct qed_iwarp_connect_out *oparams);
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int
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qed_iwarp_create_listen(void *rdma_cxt,
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struct qed_iwarp_listen_in *iparams,
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struct qed_iwarp_listen_out *oparams);
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int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams);
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int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams);
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int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle);
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int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams);
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#endif
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