drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright(c) 2017 Oracle and/or its affiliates. All rights reserved. */
   3
   4 #ifndef _IXGBE_IPSEC_H_
   5 #define _IXGBE_IPSEC_H_
   6
   7 #define IXGBE_IPSEC_MAX_SA_COUNT        1024
   8 #define IXGBE_IPSEC_MAX_RX_IP_COUNT     128
   9 #define IXGBE_IPSEC_BASE_RX_INDEX       0
  10 #define IXGBE_IPSEC_BASE_TX_INDEX       IXGBE_IPSEC_MAX_SA_COUNT
  11 #define IXGBE_IPSEC_AUTH_BITS           128
  12
  13 #define IXGBE_RXTXIDX_IPS_EN            0x00000001
  14 #define IXGBE_RXIDX_TBL_SHIFT           1
  15 enum ixgbe_ipsec_tbl_sel {
  16         ips_rx_ip_tbl   =       0x01,
  17         ips_rx_spi_tbl  =       0x02,
  18         ips_rx_key_tbl  =       0x03,
  19 };
  20
  21 #define IXGBE_RXTXIDX_IDX_SHIFT         3
  22 #define IXGBE_RXTXIDX_READ              0x40000000
  23 #define IXGBE_RXTXIDX_WRITE             0x80000000
  24
  25 #define IXGBE_RXMOD_VALID               0x00000001
  26 #define IXGBE_RXMOD_PROTO_ESP           0x00000004
  27 #define IXGBE_RXMOD_DECRYPT             0x00000008
  28 #define IXGBE_RXMOD_IPV6                0x00000010
  29 #define IXGBE_RXTXMOD_VF                0x00000020
  30
  31 struct rx_sa {
  32         struct hlist_node hlist;
  33         struct xfrm_state *xs;
  34         __be32 ipaddr[4];
  35         u32 key[4];
  36         u32 salt;
  37         u32 mode;
  38         u8  iptbl_ind;
  39         bool used;
  40         bool decrypt;
  41         u32 vf;
  42 };
  43
  44 struct rx_ip_sa {
  45         __be32 ipaddr[4];
  46         u32 ref_cnt;
  47         bool used;
  48 };
  49
  50 struct tx_sa {
  51         struct xfrm_state *xs;
  52         u32 key[4];
  53         u32 salt;
  54         u32 mode;
  55         bool encrypt;
  56         bool used;
  57         u32 vf;
  58 };
  59
  60 struct ixgbe_ipsec_tx_data {
  61         u32 flags;
  62         u16 trailer_len;
  63         u16 sa_idx;
  64 };
  65
  66 struct ixgbe_ipsec {
  67         u16 num_rx_sa;
  68         u16 num_tx_sa;
  69         struct rx_ip_sa *ip_tbl;
  70         struct rx_sa *rx_tbl;
  71         struct tx_sa *tx_tbl;
  72         DECLARE_HASHTABLE(rx_sa_list, 10);
  73 };
  74
  75 struct sa_mbx_msg {
  76         __be32 spi;
  77         u8 flags;
  78         u8 proto;
  79         u16 family;
  80         __be32 addr[4];
  81         u32 key[5];
  82 };
  83 #endif /* _IXGBE_IPSEC_H_ */