drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright (C) 2020 Chelsio Communications.  All rights reserved. */
   3
   4 #ifndef __CHCR_KTLS_H__
   5 #define __CHCR_KTLS_H__
   6
   7 #include "cxgb4.h"
   8 #include "t4_msg.h"
   9 #include "t4_tcb.h"
  10 #include "l2t.h"
  11 #include "chcr_common.h"
  12 #include "cxgb4_uld.h"
  13 #include "clip_tbl.h"
  14
  15 #define CHCR_KTLS_DRV_MODULE_NAME "ch_ktls"
  16 #define CHCR_KTLS_DRV_VERSION "1.0.0.0-ko"
  17 #define CHCR_KTLS_DRV_DESC "Chelsio NIC TLS ULD Driver"
  18
  19 #define CHCR_TCB_STATE_CLOSED   0
  20 #define CHCR_KTLS_KEY_CTX_LEN   16
  21 #define CHCR_SET_TCB_FIELD_LEN  sizeof(struct cpl_set_tcb_field)
  22 #define CHCR_PLAIN_TX_DATA_LEN  (sizeof(struct fw_ulptx_wr) +\
  23                                  sizeof(struct ulp_txpkt) +\
  24                                  sizeof(struct ulptx_idata) +\
  25                                  sizeof(struct cpl_tx_data))
  26
  27 #define CHCR_KTLS_WR_SIZE       (CHCR_PLAIN_TX_DATA_LEN +\
  28                                  sizeof(struct cpl_tx_sec_pdu))
  29 #define FALLBACK                35
  30
  31 enum ch_ktls_open_state {
  32         CH_KTLS_OPEN_SUCCESS = 0,
  33         CH_KTLS_OPEN_PENDING = 1,
  34         CH_KTLS_OPEN_FAILURE = 2,
  35 };
  36
  37 struct chcr_ktls_info {
  38         struct sock *sk;
  39         spinlock_t lock; /* lock for pending_close */
  40         struct ktls_key_ctx key_ctx;
  41         struct adapter *adap;
  42         struct l2t_entry *l2te;
  43         struct net_device *netdev;
  44         struct completion completion;
  45         u64 iv;
  46         u64 record_no;
  47         int tid;
  48         int atid;
  49         int rx_qid;
  50         u32 iv_size;
  51         u32 prev_seq;
  52         u32 prev_ack;
  53         u32 salt_size;
  54         u32 key_ctx_len;
  55         u32 scmd0_seqno_numivs;
  56         u32 scmd0_ivgen_hdrlen;
  57         u32 tcp_start_seq_number;
  58         u32 scmd0_short_seqno_numivs;
  59         u32 scmd0_short_ivgen_hdrlen;
  60         u16 prev_win;
  61         u8 tx_chan;
  62         u8 smt_idx;
  63         u8 port_id;
  64         u8 ip_family;
  65         u8 first_qset;
  66         enum ch_ktls_open_state open_state;
  67         bool pending_close;
  68 };
  69
  70 struct chcr_ktls_ofld_ctx_tx {
  71         struct tls_offload_context_tx base;
  72         struct chcr_ktls_info *chcr_info;
  73 };
  74
  75 struct chcr_ktls_uld_ctx {
  76         struct list_head entry;
  77         struct cxgb4_lld_info lldi;
  78 };
  79
  80 static inline struct chcr_ktls_ofld_ctx_tx *
  81 chcr_get_ktls_tx_context(struct tls_context *tls_ctx)
  82 {
  83         BUILD_BUG_ON(sizeof(struct chcr_ktls_ofld_ctx_tx) >
  84                      TLS_OFFLOAD_CONTEXT_SIZE_TX);
  85         return container_of(tls_offload_ctx_tx(tls_ctx),
  86                             struct chcr_ktls_ofld_ctx_tx,
  87                             base);
  88 }
  89
  90 static inline int chcr_get_first_rx_qid(struct adapter *adap)
  91 {
  92         /* u_ctx is saved in adap, fetch it */
  93         struct chcr_ktls_uld_ctx *u_ctx = adap->uld[CXGB4_ULD_KTLS].handle;
  94
  95         if (!u_ctx)
  96                 return -1;
  97         return u_ctx->lldi.rxq_ids[0];
  98 }
  99
 100 typedef int (*chcr_handler_func)(struct adapter *adap, unsigned char *input);
 101 #endif /* __CHCR_KTLS_H__ */