drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (c) 2018 Chelsio Communications, Inc.
   4  */
   5
   6 #ifndef __CHTLS_CM_H__
   7 #define __CHTLS_CM_H__
   8
   9 /*
  10  * TCB settings
  11  */
  12 /* 3:0 */
  13 #define TCB_ULP_TYPE_W    0
  14 #define TCB_ULP_TYPE_S    0
  15 #define TCB_ULP_TYPE_M    0xfULL
  16 #define TCB_ULP_TYPE_V(x) ((x) << TCB_ULP_TYPE_S)
  17
  18 /* 11:4 */
  19 #define TCB_ULP_RAW_W    0
  20 #define TCB_ULP_RAW_S    4
  21 #define TCB_ULP_RAW_M    0xffULL
  22 #define TCB_ULP_RAW_V(x) ((x) << TCB_ULP_RAW_S)
  23
  24 #define TF_TLS_KEY_SIZE_S    7
  25 #define TF_TLS_KEY_SIZE_V(x) ((x) << TF_TLS_KEY_SIZE_S)
  26
  27 #define TF_TLS_CONTROL_S     2
  28 #define TF_TLS_CONTROL_V(x) ((x) << TF_TLS_CONTROL_S)
  29
  30 #define TF_TLS_ACTIVE_S      1
  31 #define TF_TLS_ACTIVE_V(x) ((x) << TF_TLS_ACTIVE_S)
  32
  33 #define TF_TLS_ENABLE_S      0
  34 #define TF_TLS_ENABLE_V(x) ((x) << TF_TLS_ENABLE_S)
  35
  36 #define TF_RX_QUIESCE_S    15
  37 #define TF_RX_QUIESCE_V(x) ((x) << TF_RX_QUIESCE_S)
  38
  39 /*
  40  * Max receive window supported by HW in bytes.  Only a small part of it can
  41  * be set through option0, the rest needs to be set through RX_DATA_ACK.
  42  */
  43 #define MAX_RCV_WND ((1U << 27) - 1)
  44 #define MAX_MSS     65536
  45
  46 /*
  47  * Min receive window.  We want it to be large enough to accommodate receive
  48  * coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
  49  */
  50 #define MIN_RCV_WND (24 * 1024U)
  51 #define LOOPBACK(x)     (((x) & htonl(0xff000000)) == htonl(0x7f000000))
  52
  53 /* for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */
  54 #define TX_HEADER_LEN \
  55         (sizeof(struct fw_ofld_tx_data_wr) + sizeof(struct sge_opaque_hdr))
  56 #define TX_TLSHDR_LEN \
  57         (sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo) + \
  58          sizeof(struct sge_opaque_hdr))
  59 #define TXDATA_SKB_LEN 128
  60
  61 enum {
  62         CPL_TX_TLS_SFO_TYPE_CCS,
  63         CPL_TX_TLS_SFO_TYPE_ALERT,
  64         CPL_TX_TLS_SFO_TYPE_HANDSHAKE,
  65         CPL_TX_TLS_SFO_TYPE_DATA,
  66         CPL_TX_TLS_SFO_TYPE_HEARTBEAT,
  67 };
  68
  69 enum {
  70         TLS_HDR_TYPE_CCS = 20,
  71         TLS_HDR_TYPE_ALERT,
  72         TLS_HDR_TYPE_HANDSHAKE,
  73         TLS_HDR_TYPE_RECORD,
  74         TLS_HDR_TYPE_HEARTBEAT,
  75 };
  76
  77 typedef void (*defer_handler_t)(struct chtls_dev *dev, struct sk_buff *skb);
  78 extern struct request_sock_ops chtls_rsk_ops;
  79 extern struct request_sock_ops chtls_rsk_opsv6;
  80
  81 struct deferred_skb_cb {
  82         defer_handler_t handler;
  83         struct chtls_dev *dev;
  84 };
  85
  86 #define DEFERRED_SKB_CB(skb) ((struct deferred_skb_cb *)(skb)->cb)
  87 #define failover_flowc_wr_len offsetof(struct fw_flowc_wr, mnemval[3])
  88 #define WR_SKB_CB(skb) ((struct wr_skb_cb *)(skb)->cb)
  89 #define ACCEPT_QUEUE(sk) (&inet_csk(sk)->icsk_accept_queue.rskq_accept_head)
  90
  91 #define SND_WSCALE(tp) ((tp)->rx_opt.snd_wscale)
  92 #define RCV_WSCALE(tp) ((tp)->rx_opt.rcv_wscale)
  93 #define USER_MSS(tp) ((tp)->rx_opt.user_mss)
  94 #define TS_RECENT_STAMP(tp) ((tp)->rx_opt.ts_recent_stamp)
  95 #define WSCALE_OK(tp) ((tp)->rx_opt.wscale_ok)
  96 #define TSTAMP_OK(tp) ((tp)->rx_opt.tstamp_ok)
  97 #define SACK_OK(tp) ((tp)->rx_opt.sack_ok)
  98 #define INC_ORPHAN_COUNT(sk) this_cpu_inc(*(sk)->sk_prot->orphan_count)
  99
 100 /* TLS SKB */
 101 #define skb_ulp_tls_inline(skb)      (ULP_SKB_CB(skb)->ulp.tls.ofld)
 102 #define skb_ulp_tls_iv_imm(skb)      (ULP_SKB_CB(skb)->ulp.tls.iv)
 103
 104 void chtls_defer_reply(struct sk_buff *skb, struct chtls_dev *dev,
 105                        defer_handler_t handler);
 106
 107 /*
 108  * Returns true if the socket is in one of the supplied states.
 109  */
 110 static inline unsigned int sk_in_state(const struct sock *sk,
 111                                        unsigned int states)
 112 {
 113         return states & (1 << sk->sk_state);
 114 }
 115
 116 static void chtls_rsk_destructor(struct request_sock *req)
 117 {
 118         /* do nothing */
 119 }
 120
 121 static inline void chtls_init_rsk_ops(struct proto *chtls_tcp_prot,
 122                                       struct request_sock_ops *chtls_tcp_ops,
 123                                       struct proto *tcp_prot, int family)
 124 {
 125         memset(chtls_tcp_ops, 0, sizeof(*chtls_tcp_ops));
 126         chtls_tcp_ops->family = family;
 127         chtls_tcp_ops->obj_size = sizeof(struct tcp_request_sock);
 128         chtls_tcp_ops->destructor = chtls_rsk_destructor;
 129         chtls_tcp_ops->slab = tcp_prot->rsk_prot->slab;
 130         chtls_tcp_prot->rsk_prot = chtls_tcp_ops;
 131 }
 132
 133 static inline void chtls_reqsk_free(struct request_sock *req)
 134 {
 135         if (req->rsk_listener)
 136                 sock_put(req->rsk_listener);
 137         kmem_cache_free(req->rsk_ops->slab, req);
 138 }
 139
 140 #define DECLARE_TASK_FUNC(task, task_param) \
 141                 static void task(struct work_struct *task_param)
 142
 143 static inline void sk_wakeup_sleepers(struct sock *sk, bool interruptable)
 144 {
 145         struct socket_wq *wq;
 146
 147         rcu_read_lock();
 148         wq = rcu_dereference(sk->sk_wq);
 149         if (skwq_has_sleeper(wq)) {
 150                 if (interruptable)
 151                         wake_up_interruptible(sk_sleep(sk));
 152                 else
 153                         wake_up_all(sk_sleep(sk));
 154         }
 155         rcu_read_unlock();
 156 }
 157
 158 static inline void chtls_set_req_port(struct request_sock *oreq,
 159                                       __be16 source, __be16 dest)
 160 {
 161         inet_rsk(oreq)->ir_rmt_port = source;
 162         inet_rsk(oreq)->ir_num = ntohs(dest);
 163 }
 164
 165 static inline void chtls_set_req_addr(struct request_sock *oreq,
 166                                       __be32 local_ip, __be32 peer_ip)
 167 {
 168         inet_rsk(oreq)->ir_loc_addr = local_ip;
 169         inet_rsk(oreq)->ir_rmt_addr = peer_ip;
 170 }
 171
 172 static inline void chtls_free_skb(struct sock *sk, struct sk_buff *skb)
 173 {
 174         skb_dst_set(skb, NULL);
 175         __skb_unlink(skb, &sk->sk_receive_queue);
 176         __kfree_skb(skb);
 177 }
 178
 179 static inline void chtls_kfree_skb(struct sock *sk, struct sk_buff *skb)
 180 {
 181         skb_dst_set(skb, NULL);
 182         __skb_unlink(skb, &sk->sk_receive_queue);
 183         kfree_skb(skb);
 184 }
 185
 186 static inline void chtls_reset_wr_list(struct chtls_sock *csk)
 187 {
 188         csk->wr_skb_head = NULL;
 189         csk->wr_skb_tail = NULL;
 190 }
 191
 192 static inline void enqueue_wr(struct chtls_sock *csk, struct sk_buff *skb)
 193 {
 194         WR_SKB_CB(skb)->next_wr = NULL;
 195
 196         skb_get(skb);
 197
 198         if (!csk->wr_skb_head)
 199                 csk->wr_skb_head = skb;
 200         else
 201                 WR_SKB_CB(csk->wr_skb_tail)->next_wr = skb;
 202         csk->wr_skb_tail = skb;
 203 }
 204
 205 static inline struct sk_buff *dequeue_wr(struct sock *sk)
 206 {
 207         struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
 208         struct sk_buff *skb = NULL;
 209
 210         skb = csk->wr_skb_head;
 211
 212         if (likely(skb)) {
 213          /* Don't bother clearing the tail */
 214                 csk->wr_skb_head = WR_SKB_CB(skb)->next_wr;
 215                 WR_SKB_CB(skb)->next_wr = NULL;
 216         }
 217         return skb;
 218 }
 219 #endif