489 lines
13 KiB
C
489 lines
13 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2018 Chelsio Communications, Inc.
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*/
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#ifndef __CHTLS_H__
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#define __CHTLS_H__
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#include <crypto/aes.h>
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#include <crypto/algapi.h>
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#include <crypto/hash.h>
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#include <crypto/sha.h>
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#include <crypto/authenc.h>
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#include <crypto/ctr.h>
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#include <crypto/gf128mul.h>
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#include <crypto/internal/aead.h>
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#include <crypto/null.h>
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#include <crypto/internal/skcipher.h>
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#include <crypto/aead.h>
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#include <crypto/scatterwalk.h>
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#include <crypto/internal/hash.h>
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#include <linux/tls.h>
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#include <net/tls.h>
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#include "t4fw_api.h"
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#include "t4_msg.h"
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#include "cxgb4.h"
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#include "cxgb4_uld.h"
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#include "l2t.h"
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#include "chcr_algo.h"
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#include "chcr_core.h"
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#include "chcr_crypto.h"
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#define MAX_IVS_PAGE 256
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#define TLS_KEY_CONTEXT_SZ 64
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#define CIPHER_BLOCK_SIZE 16
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#define GCM_TAG_SIZE 16
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#define KEY_ON_MEM_SZ 16
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#define AEAD_EXPLICIT_DATA_SIZE 8
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#define TLS_HEADER_LENGTH 5
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#define SCMD_CIPH_MODE_AES_GCM 2
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/* Any MFS size should work and come from openssl */
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#define TLS_MFS 16384
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#define RSS_HDR sizeof(struct rss_header)
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#define TLS_WR_CPL_LEN \
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(sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo))
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enum {
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CHTLS_KEY_CONTEXT_DSGL,
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CHTLS_KEY_CONTEXT_IMM,
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CHTLS_KEY_CONTEXT_DDR,
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};
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enum {
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CHTLS_LISTEN_START,
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CHTLS_LISTEN_STOP,
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};
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/* Flags for return value of CPL message handlers */
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enum {
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CPL_RET_BUF_DONE = 1, /* buffer processing done */
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CPL_RET_BAD_MSG = 2, /* bad CPL message */
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CPL_RET_UNKNOWN_TID = 4 /* unexpected unknown TID */
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};
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#define LISTEN_INFO_HASH_SIZE 32
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#define RSPQ_HASH_BITS 5
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struct listen_info {
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struct listen_info *next; /* Link to next entry */
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struct sock *sk; /* The listening socket */
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unsigned int stid; /* The server TID */
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};
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enum {
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T4_LISTEN_START_PENDING,
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T4_LISTEN_STARTED
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};
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enum csk_flags {
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CSK_CALLBACKS_CHKD, /* socket callbacks have been sanitized */
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CSK_ABORT_REQ_RCVD, /* received one ABORT_REQ_RSS message */
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CSK_TX_MORE_DATA, /* sending ULP data; don't set SHOVE bit */
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CSK_TX_WAIT_IDLE, /* suspend Tx until in-flight data is ACKed */
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CSK_ABORT_SHUTDOWN, /* shouldn't send more abort requests */
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CSK_ABORT_RPL_PENDING, /* expecting an abort reply */
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CSK_CLOSE_CON_REQUESTED,/* we've sent a close_conn_req */
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CSK_TX_DATA_SENT, /* sent a TX_DATA WR on this connection */
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CSK_TX_FAILOVER, /* Tx traffic failing over */
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CSK_UPDATE_RCV_WND, /* Need to update rcv window */
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CSK_RST_ABORTED, /* outgoing RST was aborted */
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CSK_TLS_HANDSHK, /* TLS Handshake */
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CSK_CONN_INLINE, /* Connection on HW */
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};
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enum chtls_cdev_state {
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CHTLS_CDEV_STATE_UP = 1
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};
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struct listen_ctx {
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struct sock *lsk;
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struct chtls_dev *cdev;
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struct sk_buff_head synq;
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u32 state;
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};
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struct key_map {
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unsigned long *addr;
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unsigned int start;
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unsigned int available;
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unsigned int size;
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spinlock_t lock; /* lock for key id request from map */
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} __packed;
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struct tls_scmd {
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u32 seqno_numivs;
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u32 ivgen_hdrlen;
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};
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struct chtls_dev {
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struct tls_device tlsdev;
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struct list_head list;
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struct cxgb4_lld_info *lldi;
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struct pci_dev *pdev;
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struct listen_info *listen_hash_tab[LISTEN_INFO_HASH_SIZE];
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spinlock_t listen_lock; /* lock for listen list */
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struct net_device **ports;
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struct tid_info *tids;
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unsigned int pfvf;
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const unsigned short *mtus;
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struct idr hwtid_idr;
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struct idr stid_idr;
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spinlock_t idr_lock ____cacheline_aligned_in_smp;
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struct net_device *egr_dev[NCHAN * 2];
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struct sk_buff *rspq_skb_cache[1 << RSPQ_HASH_BITS];
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struct sk_buff *askb;
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struct sk_buff_head deferq;
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struct work_struct deferq_task;
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struct list_head list_node;
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struct list_head rcu_node;
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struct list_head na_node;
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unsigned int send_page_order;
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int max_host_sndbuf;
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struct key_map kmap;
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unsigned int cdev_state;
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};
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struct chtls_listen {
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struct chtls_dev *cdev;
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struct sock *sk;
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};
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struct chtls_hws {
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struct sk_buff_head sk_recv_queue;
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u8 txqid;
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u8 ofld;
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u16 type;
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u16 rstate;
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u16 keyrpl;
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u16 pldlen;
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u16 rcvpld;
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u16 compute;
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u16 expansion;
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u16 keylen;
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u16 pdus;
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u16 adjustlen;
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u16 ivsize;
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u16 txleft;
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u32 mfs;
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s32 txkey;
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s32 rxkey;
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u32 fcplenmax;
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u32 copied_seq;
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u64 tx_seq_no;
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struct tls_scmd scmd;
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struct tls12_crypto_info_aes_gcm_128 crypto_info;
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};
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struct chtls_sock {
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struct sock *sk;
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struct chtls_dev *cdev;
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struct l2t_entry *l2t_entry; /* pointer to the L2T entry */
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struct net_device *egress_dev; /* TX_CHAN for act open retry */
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struct sk_buff_head txq;
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struct sk_buff *wr_skb_head;
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struct sk_buff *wr_skb_tail;
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struct sk_buff *ctrl_skb_cache;
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struct sk_buff *txdata_skb_cache; /* abort path messages */
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struct kref kref;
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unsigned long flags;
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u32 opt2;
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u32 wr_credits;
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u32 wr_unacked;
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u32 wr_max_credits;
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u32 wr_nondata;
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u32 hwtid; /* TCP Control Block ID */
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u32 txq_idx;
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u32 rss_qid;
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u32 tid;
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u32 idr;
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u32 mss;
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u32 ulp_mode;
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u32 tx_chan;
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u32 rx_chan;
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u32 sndbuf;
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u32 txplen_max;
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u32 mtu_idx; /* MTU table index */
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u32 smac_idx;
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u8 port_id;
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u8 tos;
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u16 resv2;
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u32 delack_mode;
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u32 delack_seq;
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u32 snd_win;
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u32 rcv_win;
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void *passive_reap_next; /* placeholder for passive */
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struct chtls_hws tlshws;
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struct synq {
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struct sk_buff *next;
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struct sk_buff *prev;
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} synq;
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struct listen_ctx *listen_ctx;
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};
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struct tls_hdr {
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u8 type;
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u16 version;
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u16 length;
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} __packed;
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struct tlsrx_cmp_hdr {
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u8 type;
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u16 version;
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u16 length;
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u64 tls_seq;
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u16 reserved1;
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u8 res_to_mac_error;
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} __packed;
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/* res_to_mac_error fields */
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#define TLSRX_HDR_PKT_INT_ERROR_S 4
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#define TLSRX_HDR_PKT_INT_ERROR_M 0x1
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#define TLSRX_HDR_PKT_INT_ERROR_V(x) \
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((x) << TLSRX_HDR_PKT_INT_ERROR_S)
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#define TLSRX_HDR_PKT_INT_ERROR_G(x) \
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(((x) >> TLSRX_HDR_PKT_INT_ERROR_S) & TLSRX_HDR_PKT_INT_ERROR_M)
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#define TLSRX_HDR_PKT_INT_ERROR_F TLSRX_HDR_PKT_INT_ERROR_V(1U)
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#define TLSRX_HDR_PKT_SPP_ERROR_S 3
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#define TLSRX_HDR_PKT_SPP_ERROR_M 0x1
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#define TLSRX_HDR_PKT_SPP_ERROR_V(x) ((x) << TLSRX_HDR_PKT_SPP_ERROR)
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#define TLSRX_HDR_PKT_SPP_ERROR_G(x) \
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(((x) >> TLSRX_HDR_PKT_SPP_ERROR_S) & TLSRX_HDR_PKT_SPP_ERROR_M)
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#define TLSRX_HDR_PKT_SPP_ERROR_F TLSRX_HDR_PKT_SPP_ERROR_V(1U)
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#define TLSRX_HDR_PKT_CCDX_ERROR_S 2
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#define TLSRX_HDR_PKT_CCDX_ERROR_M 0x1
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#define TLSRX_HDR_PKT_CCDX_ERROR_V(x) ((x) << TLSRX_HDR_PKT_CCDX_ERROR_S)
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#define TLSRX_HDR_PKT_CCDX_ERROR_G(x) \
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(((x) >> TLSRX_HDR_PKT_CCDX_ERROR_S) & TLSRX_HDR_PKT_CCDX_ERROR_M)
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#define TLSRX_HDR_PKT_CCDX_ERROR_F TLSRX_HDR_PKT_CCDX_ERROR_V(1U)
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#define TLSRX_HDR_PKT_PAD_ERROR_S 1
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#define TLSRX_HDR_PKT_PAD_ERROR_M 0x1
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#define TLSRX_HDR_PKT_PAD_ERROR_V(x) ((x) << TLSRX_HDR_PKT_PAD_ERROR_S)
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#define TLSRX_HDR_PKT_PAD_ERROR_G(x) \
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(((x) >> TLSRX_HDR_PKT_PAD_ERROR_S) & TLSRX_HDR_PKT_PAD_ERROR_M)
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#define TLSRX_HDR_PKT_PAD_ERROR_F TLSRX_HDR_PKT_PAD_ERROR_V(1U)
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#define TLSRX_HDR_PKT_MAC_ERROR_S 0
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#define TLSRX_HDR_PKT_MAC_ERROR_M 0x1
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#define TLSRX_HDR_PKT_MAC_ERROR_V(x) ((x) << TLSRX_HDR_PKT_MAC_ERROR)
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#define TLSRX_HDR_PKT_MAC_ERROR_G(x) \
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(((x) >> S_TLSRX_HDR_PKT_MAC_ERROR_S) & TLSRX_HDR_PKT_MAC_ERROR_M)
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#define TLSRX_HDR_PKT_MAC_ERROR_F TLSRX_HDR_PKT_MAC_ERROR_V(1U)
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#define TLSRX_HDR_PKT_ERROR_M 0x1F
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#define CONTENT_TYPE_ERROR 0x7F
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struct ulp_mem_rw {
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__be32 cmd;
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__be32 len16; /* command length */
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__be32 dlen; /* data length in 32-byte units */
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__be32 lock_addr;
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};
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struct tls_key_wr {
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__be32 op_to_compl;
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__be32 flowid_len16;
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__be32 ftid;
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u8 reneg_to_write_rx;
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u8 protocol;
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__be16 mfs;
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};
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struct tls_key_req {
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struct tls_key_wr wr;
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struct ulp_mem_rw req;
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struct ulptx_idata sc_imm;
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};
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/*
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* This lives in skb->cb and is used to chain WRs in a linked list.
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*/
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struct wr_skb_cb {
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struct l2t_skb_cb l2t; /* reserve space for l2t CB */
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struct sk_buff *next_wr; /* next write request */
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};
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/* Per-skb backlog handler. Run when a socket's backlog is processed. */
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struct blog_skb_cb {
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void (*backlog_rcv)(struct sock *sk, struct sk_buff *skb);
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struct chtls_dev *cdev;
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};
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/*
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* Similar to tcp_skb_cb but with ULP elements added to support TLS,
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* etc.
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*/
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struct ulp_skb_cb {
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struct wr_skb_cb wr; /* reserve space for write request */
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u16 flags; /* TCP-like flags */
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u8 psh;
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u8 ulp_mode; /* ULP mode/submode of sk_buff */
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u32 seq; /* TCP sequence number */
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union { /* ULP-specific fields */
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struct {
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u8 type;
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u8 ofld;
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u8 iv;
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} tls;
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} ulp;
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};
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#define ULP_SKB_CB(skb) ((struct ulp_skb_cb *)&((skb)->cb[0]))
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#define BLOG_SKB_CB(skb) ((struct blog_skb_cb *)(skb)->cb)
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/*
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* Flags for ulp_skb_cb.flags.
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*/
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enum {
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ULPCB_FLAG_NEED_HDR = 1 << 0, /* packet needs a TX_DATA_WR header */
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ULPCB_FLAG_NO_APPEND = 1 << 1, /* don't grow this skb */
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ULPCB_FLAG_BARRIER = 1 << 2, /* set TX_WAIT_IDLE after sending */
|
||
|
|
ULPCB_FLAG_HOLD = 1 << 3, /* skb not ready for Tx yet */
|
||
|
|
ULPCB_FLAG_COMPL = 1 << 4, /* request WR completion */
|
||
|
|
ULPCB_FLAG_URG = 1 << 5, /* urgent data */
|
||
|
|
ULPCB_FLAG_TLS_HDR = 1 << 6, /* payload with tls hdr */
|
||
|
|
ULPCB_FLAG_NO_HDR = 1 << 7, /* not a ofld wr */
|
||
|
|
};
|
||
|
|
|
||
|
|
/* The ULP mode/submode of an skbuff */
|
||
|
|
#define skb_ulp_mode(skb) (ULP_SKB_CB(skb)->ulp_mode)
|
||
|
|
#define TCP_PAGE(sk) (sk->sk_frag.page)
|
||
|
|
#define TCP_OFF(sk) (sk->sk_frag.offset)
|
||
|
|
|
||
|
|
static inline struct chtls_dev *to_chtls_dev(struct tls_device *tlsdev)
|
||
|
|
{
|
||
|
|
return container_of(tlsdev, struct chtls_dev, tlsdev);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void csk_set_flag(struct chtls_sock *csk,
|
||
|
|
enum csk_flags flag)
|
||
|
|
{
|
||
|
|
__set_bit(flag, &csk->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void csk_reset_flag(struct chtls_sock *csk,
|
||
|
|
enum csk_flags flag)
|
||
|
|
{
|
||
|
|
__clear_bit(flag, &csk->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline bool csk_conn_inline(const struct chtls_sock *csk)
|
||
|
|
{
|
||
|
|
return test_bit(CSK_CONN_INLINE, &csk->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int csk_flag(const struct sock *sk, enum csk_flags flag)
|
||
|
|
{
|
||
|
|
struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
|
||
|
|
|
||
|
|
if (!csk_conn_inline(csk))
|
||
|
|
return 0;
|
||
|
|
return test_bit(flag, &csk->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int csk_flag_nochk(const struct chtls_sock *csk,
|
||
|
|
enum csk_flags flag)
|
||
|
|
{
|
||
|
|
return test_bit(flag, &csk->flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void *cplhdr(struct sk_buff *skb)
|
||
|
|
{
|
||
|
|
return skb->data;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int is_neg_adv(unsigned int status)
|
||
|
|
{
|
||
|
|
return status == CPL_ERR_RTX_NEG_ADVICE ||
|
||
|
|
status == CPL_ERR_KEEPALV_NEG_ADVICE ||
|
||
|
|
status == CPL_ERR_PERSIST_NEG_ADVICE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void process_cpl_msg(void (*fn)(struct sock *, struct sk_buff *),
|
||
|
|
struct sock *sk,
|
||
|
|
struct sk_buff *skb)
|
||
|
|
{
|
||
|
|
skb_reset_mac_header(skb);
|
||
|
|
skb_reset_network_header(skb);
|
||
|
|
skb_reset_transport_header(skb);
|
||
|
|
|
||
|
|
bh_lock_sock(sk);
|
||
|
|
if (unlikely(sock_owned_by_user(sk))) {
|
||
|
|
BLOG_SKB_CB(skb)->backlog_rcv = fn;
|
||
|
|
__sk_add_backlog(sk, skb);
|
||
|
|
} else {
|
||
|
|
fn(sk, skb);
|
||
|
|
}
|
||
|
|
bh_unlock_sock(sk);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void chtls_sock_free(struct kref *ref)
|
||
|
|
{
|
||
|
|
struct chtls_sock *csk = container_of(ref, struct chtls_sock,
|
||
|
|
kref);
|
||
|
|
kfree(csk);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void __chtls_sock_put(const char *fn, struct chtls_sock *csk)
|
||
|
|
{
|
||
|
|
kref_put(&csk->kref, chtls_sock_free);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void __chtls_sock_get(const char *fn,
|
||
|
|
struct chtls_sock *csk)
|
||
|
|
{
|
||
|
|
kref_get(&csk->kref);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void send_or_defer(struct sock *sk, struct tcp_sock *tp,
|
||
|
|
struct sk_buff *skb, int through_l2t)
|
||
|
|
{
|
||
|
|
struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
|
||
|
|
|
||
|
|
if (through_l2t) {
|
||
|
|
/* send through L2T */
|
||
|
|
cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
|
||
|
|
} else {
|
||
|
|
/* send directly */
|
||
|
|
cxgb4_ofld_send(csk->egress_dev, skb);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
typedef int (*chtls_handler_func)(struct chtls_dev *, struct sk_buff *);
|
||
|
|
extern chtls_handler_func chtls_handlers[NUM_CPL_CMDS];
|
||
|
|
void chtls_install_cpl_ops(struct sock *sk);
|
||
|
|
int chtls_init_kmap(struct chtls_dev *cdev, struct cxgb4_lld_info *lldi);
|
||
|
|
void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk);
|
||
|
|
int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk);
|
||
|
|
void chtls_close(struct sock *sk, long timeout);
|
||
|
|
int chtls_disconnect(struct sock *sk, int flags);
|
||
|
|
void chtls_shutdown(struct sock *sk, int how);
|
||
|
|
void chtls_destroy_sock(struct sock *sk);
|
||
|
|
int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
|
||
|
|
int chtls_recvmsg(struct sock *sk, struct msghdr *msg,
|
||
|
|
size_t len, int nonblock, int flags, int *addr_len);
|
||
|
|
int chtls_sendpage(struct sock *sk, struct page *page,
|
||
|
|
int offset, size_t size, int flags);
|
||
|
|
int send_tx_flowc_wr(struct sock *sk, int compl,
|
||
|
|
u32 snd_nxt, u32 rcv_nxt);
|
||
|
|
void chtls_tcp_push(struct sock *sk, int flags);
|
||
|
|
int chtls_push_frames(struct chtls_sock *csk, int comp);
|
||
|
|
int chtls_set_tcb_tflag(struct sock *sk, unsigned int bit_pos, int val);
|
||
|
|
int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 mode);
|
||
|
|
void skb_entail(struct sock *sk, struct sk_buff *skb, int flags);
|
||
|
|
unsigned int keyid_to_addr(int start_addr, int keyid);
|
||
|
|
void free_tls_keyid(struct sock *sk);
|
||
|
|
#endif
|