drivers/crypto/chelsio/chtls/chtls_cm.h

   1 /*
   2  * Copyright (c) 2018 Chelsio Communications, Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef __CHTLS_CM_H__
  10 #define __CHTLS_CM_H__
  11
  12 /*
  13  * TCB settings
  14  */
  15 /* 3:0 */
  16 #define TCB_ULP_TYPE_W    0
  17 #define TCB_ULP_TYPE_S    0
  18 #define TCB_ULP_TYPE_M    0xfULL
  19 #define TCB_ULP_TYPE_V(x) ((x) << TCB_ULP_TYPE_S)
  20
  21 /* 11:4 */
  22 #define TCB_ULP_RAW_W    0
  23 #define TCB_ULP_RAW_S    4
  24 #define TCB_ULP_RAW_M    0xffULL
  25 #define TCB_ULP_RAW_V(x) ((x) << TCB_ULP_RAW_S)
  26
  27 #define TF_TLS_KEY_SIZE_S    7
  28 #define TF_TLS_KEY_SIZE_V(x) ((x) << TF_TLS_KEY_SIZE_S)
  29
  30 #define TF_TLS_CONTROL_S     2
  31 #define TF_TLS_CONTROL_V(x) ((x) << TF_TLS_CONTROL_S)
  32
  33 #define TF_TLS_ACTIVE_S      1
  34 #define TF_TLS_ACTIVE_V(x) ((x) << TF_TLS_ACTIVE_S)
  35
  36 #define TF_TLS_ENABLE_S      0
  37 #define TF_TLS_ENABLE_V(x) ((x) << TF_TLS_ENABLE_S)
  38
  39 #define TF_RX_QUIESCE_S    15
  40 #define TF_RX_QUIESCE_V(x) ((x) << TF_RX_QUIESCE_S)
  41
  42 /*
  43  * Max receive window supported by HW in bytes.  Only a small part of it can
  44  * be set through option0, the rest needs to be set through RX_DATA_ACK.
  45  */
  46 #define MAX_RCV_WND ((1U << 27) - 1)
  47 #define MAX_MSS     65536
  48
  49 /*
  50  * Min receive window.  We want it to be large enough to accommodate receive
  51  * coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
  52  */
  53 #define MIN_RCV_WND (24 * 1024U)
  54 #define LOOPBACK(x)     (((x) & htonl(0xff000000)) == htonl(0x7f000000))
  55
  56 /* ulp_mem_io + ulptx_idata + payload + padding */
  57 #define MAX_IMM_ULPTX_WR_LEN (32 + 8 + 256 + 8)
  58
  59 /* for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */
  60 #define TX_HEADER_LEN \
  61         (sizeof(struct fw_ofld_tx_data_wr) + sizeof(struct sge_opaque_hdr))
  62 #define TX_TLSHDR_LEN \
  63         (sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo) + \
  64          sizeof(struct sge_opaque_hdr))
  65 #define TXDATA_SKB_LEN 128
  66
  67 enum {
  68         CPL_TX_TLS_SFO_TYPE_CCS,
  69         CPL_TX_TLS_SFO_TYPE_ALERT,
  70         CPL_TX_TLS_SFO_TYPE_HANDSHAKE,
  71         CPL_TX_TLS_SFO_TYPE_DATA,
  72         CPL_TX_TLS_SFO_TYPE_HEARTBEAT,
  73 };
  74
  75 enum {
  76         TLS_HDR_TYPE_CCS = 20,
  77         TLS_HDR_TYPE_ALERT,
  78         TLS_HDR_TYPE_HANDSHAKE,
  79         TLS_HDR_TYPE_RECORD,
  80         TLS_HDR_TYPE_HEARTBEAT,
  81 };
  82
  83 typedef void (*defer_handler_t)(struct chtls_dev *dev, struct sk_buff *skb);
  84 extern struct request_sock_ops chtls_rsk_ops;
  85
  86 struct deferred_skb_cb {
  87         defer_handler_t handler;
  88         struct chtls_dev *dev;
  89 };
  90
  91 #define DEFERRED_SKB_CB(skb) ((struct deferred_skb_cb *)(skb)->cb)
  92 #define failover_flowc_wr_len offsetof(struct fw_flowc_wr, mnemval[3])
  93 #define WR_SKB_CB(skb) ((struct wr_skb_cb *)(skb)->cb)
  94 #define ACCEPT_QUEUE(sk) (&inet_csk(sk)->icsk_accept_queue.rskq_accept_head)
  95
  96 #define SND_WSCALE(tp) ((tp)->rx_opt.snd_wscale)
  97 #define RCV_WSCALE(tp) ((tp)->rx_opt.rcv_wscale)
  98 #define USER_MSS(tp) ((tp)->rx_opt.user_mss)
  99 #define TS_RECENT_STAMP(tp) ((tp)->rx_opt.ts_recent_stamp)
 100 #define WSCALE_OK(tp) ((tp)->rx_opt.wscale_ok)
 101 #define TSTAMP_OK(tp) ((tp)->rx_opt.tstamp_ok)
 102 #define SACK_OK(tp) ((tp)->rx_opt.sack_ok)
 103 #define INC_ORPHAN_COUNT(sk) percpu_counter_inc((sk)->sk_prot->orphan_count)
 104
 105 /* TLS SKB */
 106 #define skb_ulp_tls_inline(skb)      (ULP_SKB_CB(skb)->ulp.tls.ofld)
 107 #define skb_ulp_tls_iv_imm(skb)      (ULP_SKB_CB(skb)->ulp.tls.iv)
 108
 109 void chtls_defer_reply(struct sk_buff *skb, struct chtls_dev *dev,
 110                        defer_handler_t handler);
 111
 112 /*
 113  * Returns true if the socket is in one of the supplied states.
 114  */
 115 static inline unsigned int sk_in_state(const struct sock *sk,
 116                                        unsigned int states)
 117 {
 118         return states & (1 << sk->sk_state);
 119 }
 120
 121 static void chtls_rsk_destructor(struct request_sock *req)
 122 {
 123         /* do nothing */
 124 }
 125
 126 static inline void chtls_init_rsk_ops(struct proto *chtls_tcp_prot,
 127                                       struct request_sock_ops *chtls_tcp_ops,
 128                                       struct proto *tcp_prot, int family)
 129 {
 130         memset(chtls_tcp_ops, 0, sizeof(*chtls_tcp_ops));
 131         chtls_tcp_ops->family = family;
 132         chtls_tcp_ops->obj_size = sizeof(struct tcp_request_sock);
 133         chtls_tcp_ops->destructor = chtls_rsk_destructor;
 134         chtls_tcp_ops->slab = tcp_prot->rsk_prot->slab;
 135         chtls_tcp_prot->rsk_prot = chtls_tcp_ops;
 136 }
 137
 138 static inline void chtls_reqsk_free(struct request_sock *req)
 139 {
 140         if (req->rsk_listener)
 141                 sock_put(req->rsk_listener);
 142         kmem_cache_free(req->rsk_ops->slab, req);
 143 }
 144
 145 #define DECLARE_TASK_FUNC(task, task_param) \
 146                 static void task(struct work_struct *task_param)
 147
 148 static inline void sk_wakeup_sleepers(struct sock *sk, bool interruptable)
 149 {
 150         struct socket_wq *wq;
 151
 152         rcu_read_lock();
 153         wq = rcu_dereference(sk->sk_wq);
 154         if (skwq_has_sleeper(wq)) {
 155                 if (interruptable)
 156                         wake_up_interruptible(sk_sleep(sk));
 157                 else
 158                         wake_up_all(sk_sleep(sk));
 159         }
 160         rcu_read_unlock();
 161 }
 162
 163 static inline void chtls_set_req_port(struct request_sock *oreq,
 164                                       __be16 source, __be16 dest)
 165 {
 166         inet_rsk(oreq)->ir_rmt_port = source;
 167         inet_rsk(oreq)->ir_num = ntohs(dest);
 168 }
 169
 170 static inline void chtls_set_req_addr(struct request_sock *oreq,
 171                                       __be32 local_ip, __be32 peer_ip)
 172 {
 173         inet_rsk(oreq)->ir_loc_addr = local_ip;
 174         inet_rsk(oreq)->ir_rmt_addr = peer_ip;
 175 }
 176
 177 static inline void chtls_free_skb(struct sock *sk, struct sk_buff *skb)
 178 {
 179         skb_dst_set(skb, NULL);
 180         __skb_unlink(skb, &sk->sk_receive_queue);
 181         __kfree_skb(skb);
 182 }
 183
 184 static inline void chtls_kfree_skb(struct sock *sk, struct sk_buff *skb)
 185 {
 186         skb_dst_set(skb, NULL);
 187         __skb_unlink(skb, &sk->sk_receive_queue);
 188         kfree_skb(skb);
 189 }
 190
 191 static inline void enqueue_wr(struct chtls_sock *csk, struct sk_buff *skb)
 192 {
 193         WR_SKB_CB(skb)->next_wr = NULL;
 194
 195         skb_get(skb);
 196
 197         if (!csk->wr_skb_head)
 198                 csk->wr_skb_head = skb;
 199         else
 200                 WR_SKB_CB(csk->wr_skb_tail)->next_wr = skb;
 201         csk->wr_skb_tail = skb;
 202 }
 203 #endif