1 /*- 2 * Copyright (c) 2012, 2015 Chelsio Communications, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #ifndef __CXGBEI_OFLD_H__ 29 #define __CXGBEI_OFLD_H__ 30 31 #include <dev/iscsi/icl.h> 32 33 #define CXGBEI_CONN_SIGNATURE 0x56788765 34 35 struct cxgbei_cmp { 36 LIST_ENTRY(cxgbei_cmp) link; 37 38 uint32_t tt; /* Transfer tag. */ 39 40 uint32_t next_buffer_offset; 41 uint32_t last_datasn; 42 }; 43 LIST_HEAD(cxgbei_cmp_head, cxgbei_cmp); 44 45 struct icl_cxgbei_conn { 46 struct icl_conn ic; 47 48 /* cxgbei specific stuff goes here. */ 49 uint32_t icc_signature; 50 int ulp_submode; 51 struct adapter *sc; 52 struct toepcb *toep; 53 54 /* Receive related. */ 55 bool rx_active; /* protected by so_rcv lock */ 56 bool rx_exiting; /* protected by so_rcv lock */ 57 STAILQ_HEAD(, icl_pdu) rcvd_pdus; /* protected by so_rcv lock */ 58 struct thread *rx_thread; 59 60 struct cxgbei_cmp_head *cmp_table; /* protected by cmp_lock */ 61 struct mtx cmp_lock; 62 unsigned long cmp_hash_mask; 63 64 /* Transmit related. */ 65 bool tx_active; /* protected by ic lock */ 66 STAILQ_HEAD(, icl_pdu) sent_pdus; /* protected by ic lock */ 67 struct thread *tx_thread; 68 }; 69 70 static inline struct icl_cxgbei_conn * 71 ic_to_icc(struct icl_conn *ic) 72 { 73 74 return (__containerof(ic, struct icl_cxgbei_conn, ic)); 75 } 76 77 /* PDU flags and signature. */ 78 enum { 79 ICPF_RX_HDR = 1 << 0, /* PDU header received. */ 80 ICPF_RX_FLBUF = 1 << 1, /* PDU payload received in a freelist. */ 81 ICPF_RX_DDP = 1 << 2, /* PDU payload DDP'd. */ 82 ICPF_RX_STATUS = 1 << 3, /* Rx status received. */ 83 84 CXGBEI_PDU_SIGNATURE = 0x12344321 85 }; 86 87 struct icl_cxgbei_pdu { 88 struct icl_pdu ip; 89 90 /* cxgbei specific stuff goes here. */ 91 uint32_t icp_signature; 92 uint32_t icp_seq; /* For debug only */ 93 u_int icp_flags; 94 95 u_int ref_cnt; 96 icl_pdu_cb cb; 97 int error; 98 }; 99 100 static inline struct icl_cxgbei_pdu * 101 ip_to_icp(struct icl_pdu *ip) 102 { 103 104 return (__containerof(ip, struct icl_cxgbei_pdu, ip)); 105 } 106 107 struct cxgbei_data { 108 u_int max_tx_data_len; 109 u_int max_rx_data_len; 110 111 u_int ddp_threshold; 112 struct ppod_region pr; 113 114 struct sysctl_ctx_list ctx; /* from uld_activate to deactivate */ 115 }; 116 117 #define CXGBEI_MAX_ISO_PAYLOAD 65535 118 119 /* cxgbei.c */ 120 u_int cxgbei_select_worker_thread(struct icl_cxgbei_conn *); 121 void cwt_queue_for_tx(struct icl_cxgbei_conn *); 122 void parse_pdus(struct icl_cxgbei_conn *, struct sockbuf *); 123 124 /* icl_cxgbei.c */ 125 void cwt_tx_main(void *); 126 int icl_cxgbei_mod_load(void); 127 int icl_cxgbei_mod_unload(void); 128 struct icl_pdu *icl_cxgbei_new_pdu(int); 129 void icl_cxgbei_new_pdu_set_conn(struct icl_pdu *, struct icl_conn *); 130 void icl_cxgbei_conn_pdu_free(struct icl_conn *, struct icl_pdu *); 131 struct cxgbei_cmp *cxgbei_find_cmp(struct icl_cxgbei_conn *, uint32_t); 132 133 #endif 134