/* * This file is part of the Chelsio T6 Crypto driver for Linux. * * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #ifndef __CHCR_CORE_H__ #define __CHCR_CORE_H__ #include #include "t4_hw.h" #include "cxgb4.h" #include "t4_msg.h" #include "cxgb4_uld.h" #define DRV_MODULE_NAME "chcr" #define DRV_VERSION "1.0.0.0" #define MAX_PENDING_REQ_TO_HW 20 #define CHCR_TEST_RESPONSE_TIMEOUT 1000 #define PAD_ERROR_BIT 1 #define CHK_PAD_ERR_BIT(x) (((x) >> PAD_ERROR_BIT) & 1) #define MAC_ERROR_BIT 0 #define CHK_MAC_ERR_BIT(x) (((x) >> MAC_ERROR_BIT) & 1) #define MAX_SALT 4 #define WR_MIN_LEN (sizeof(struct chcr_wr) + \ sizeof(struct cpl_rx_phys_dsgl) + \ sizeof(struct ulptx_sgl)) #define padap(dev) pci_get_drvdata(dev->u_ctx->lldi.pdev) struct uld_ctx; struct _key_ctx { __be32 ctx_hdr; u8 salt[MAX_SALT]; __be64 reserverd; unsigned char key[0]; }; struct chcr_wr { struct fw_crypto_lookaside_wr wreq; struct ulp_txpkt ulptx; struct ulptx_idata sc_imm; struct cpl_tx_sec_pdu sec_cpl; struct _key_ctx key_ctx; }; struct chcr_dev { spinlock_t lock_chcr_dev; struct uld_ctx *u_ctx; unsigned char tx_channel_id; unsigned char rx_channel_id; }; struct uld_ctx { struct list_head entry; struct cxgb4_lld_info lldi; struct chcr_dev *dev; }; struct chcr_ipsec_req { struct ulp_txpkt ulptx; struct ulptx_idata sc_imm; struct cpl_tx_sec_pdu sec_cpl; struct _key_ctx key_ctx; }; struct chcr_ipsec_wr { struct fw_ulptx_wr wreq; struct chcr_ipsec_req req; }; struct ipsec_sa_entry { int hmac_ctrl; unsigned int enckey_len; unsigned int kctx_len; unsigned int authsize; __be32 key_ctx_hdr; char salt[MAX_SALT]; char key[2 * AES_MAX_KEY_SIZE]; }; /* * sgl_len - calculates the size of an SGL of the given capacity * @n: the number of SGL entries * Calculates the number of flits needed for a scatter/gather list that * can hold the given number of entries. */ static inline unsigned int sgl_len(unsigned int n) { n--; return (3 * n) / 2 + (n & 1) + 2; } struct uld_ctx *assign_chcr_device(void); int chcr_send_wr(struct sk_buff *skb); int start_crypto(void); int stop_crypto(void); int chcr_uld_rx_handler(void *handle, const __be64 *rsp, const struct pkt_gl *pgl); int chcr_uld_tx_handler(struct sk_buff *skb, struct net_device *dev); int chcr_handle_resp(struct crypto_async_request *req, unsigned char *input, int err); int chcr_ipsec_xmit(struct sk_buff *skb, struct net_device *dev); void chcr_add_xfrmops(const struct cxgb4_lld_info *lld); #endif /* __CHCR_CORE_H__ */