144fd1c1fSVinay Kumar Yadav // SPDX-License-Identifier: GPL-2.0-only 244fd1c1fSVinay Kumar Yadav /* 344fd1c1fSVinay Kumar Yadav * Copyright (c) 2018 Chelsio Communications, Inc. 444fd1c1fSVinay Kumar Yadav * 544fd1c1fSVinay Kumar Yadav * Written by: Atul Gupta (atul.gupta@chelsio.com) 644fd1c1fSVinay Kumar Yadav */ 744fd1c1fSVinay Kumar Yadav 844fd1c1fSVinay Kumar Yadav #include <linux/module.h> 944fd1c1fSVinay Kumar Yadav #include <linux/list.h> 1044fd1c1fSVinay Kumar Yadav #include <linux/workqueue.h> 1144fd1c1fSVinay Kumar Yadav #include <linux/skbuff.h> 1244fd1c1fSVinay Kumar Yadav #include <linux/timer.h> 1344fd1c1fSVinay Kumar Yadav #include <linux/notifier.h> 1444fd1c1fSVinay Kumar Yadav #include <linux/inetdevice.h> 1544fd1c1fSVinay Kumar Yadav #include <linux/ip.h> 1644fd1c1fSVinay Kumar Yadav #include <linux/tcp.h> 1744fd1c1fSVinay Kumar Yadav #include <linux/sched/signal.h> 1844fd1c1fSVinay Kumar Yadav #include <linux/kallsyms.h> 1944fd1c1fSVinay Kumar Yadav #include <linux/kprobes.h> 2044fd1c1fSVinay Kumar Yadav #include <linux/if_vlan.h> 2144fd1c1fSVinay Kumar Yadav #include <linux/ipv6.h> 2244fd1c1fSVinay Kumar Yadav #include <net/ipv6.h> 2344fd1c1fSVinay Kumar Yadav #include <net/transp_v6.h> 2444fd1c1fSVinay Kumar Yadav #include <net/ip6_route.h> 2544fd1c1fSVinay Kumar Yadav #include <net/inet_common.h> 2644fd1c1fSVinay Kumar Yadav #include <net/tcp.h> 2744fd1c1fSVinay Kumar Yadav #include <net/dst.h> 2844fd1c1fSVinay Kumar Yadav #include <net/tls.h> 2944fd1c1fSVinay Kumar Yadav #include <net/addrconf.h> 3044fd1c1fSVinay Kumar Yadav #include <net/secure_seq.h> 3144fd1c1fSVinay Kumar Yadav 3244fd1c1fSVinay Kumar Yadav #include "chtls.h" 3344fd1c1fSVinay Kumar Yadav #include "chtls_cm.h" 3444fd1c1fSVinay Kumar Yadav #include "clip_tbl.h" 3544fd1c1fSVinay Kumar Yadav 3644fd1c1fSVinay Kumar Yadav /* 3744fd1c1fSVinay Kumar Yadav * State transitions and actions for close. Note that if we are in SYN_SENT 3844fd1c1fSVinay Kumar Yadav * we remain in that state as we cannot control a connection while it's in 3944fd1c1fSVinay Kumar Yadav * SYN_SENT; such connections are allowed to establish and are then aborted. 4044fd1c1fSVinay Kumar Yadav */ 4144fd1c1fSVinay Kumar Yadav static unsigned char new_state[16] = { 4244fd1c1fSVinay Kumar Yadav /* current state: new state: action: */ 4344fd1c1fSVinay Kumar Yadav /* (Invalid) */ TCP_CLOSE, 4444fd1c1fSVinay Kumar Yadav /* TCP_ESTABLISHED */ TCP_FIN_WAIT1 | TCP_ACTION_FIN, 4544fd1c1fSVinay Kumar Yadav /* TCP_SYN_SENT */ TCP_SYN_SENT, 4644fd1c1fSVinay Kumar Yadav /* TCP_SYN_RECV */ TCP_FIN_WAIT1 | TCP_ACTION_FIN, 4744fd1c1fSVinay Kumar Yadav /* TCP_FIN_WAIT1 */ TCP_FIN_WAIT1, 4844fd1c1fSVinay Kumar Yadav /* TCP_FIN_WAIT2 */ TCP_FIN_WAIT2, 4944fd1c1fSVinay Kumar Yadav /* TCP_TIME_WAIT */ TCP_CLOSE, 5044fd1c1fSVinay Kumar Yadav /* TCP_CLOSE */ TCP_CLOSE, 5144fd1c1fSVinay Kumar Yadav /* TCP_CLOSE_WAIT */ TCP_LAST_ACK | TCP_ACTION_FIN, 5244fd1c1fSVinay Kumar Yadav /* TCP_LAST_ACK */ TCP_LAST_ACK, 5344fd1c1fSVinay Kumar Yadav /* TCP_LISTEN */ TCP_CLOSE, 5444fd1c1fSVinay Kumar Yadav /* TCP_CLOSING */ TCP_CLOSING, 5544fd1c1fSVinay Kumar Yadav }; 5644fd1c1fSVinay Kumar Yadav 5744fd1c1fSVinay Kumar Yadav static struct chtls_sock *chtls_sock_create(struct chtls_dev *cdev) 5844fd1c1fSVinay Kumar Yadav { 5944fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = kzalloc(sizeof(*csk), GFP_ATOMIC); 6044fd1c1fSVinay Kumar Yadav 6144fd1c1fSVinay Kumar Yadav if (!csk) 6244fd1c1fSVinay Kumar Yadav return NULL; 6344fd1c1fSVinay Kumar Yadav 6444fd1c1fSVinay Kumar Yadav csk->txdata_skb_cache = alloc_skb(TXDATA_SKB_LEN, GFP_ATOMIC); 6544fd1c1fSVinay Kumar Yadav if (!csk->txdata_skb_cache) { 6644fd1c1fSVinay Kumar Yadav kfree(csk); 6744fd1c1fSVinay Kumar Yadav return NULL; 6844fd1c1fSVinay Kumar Yadav } 6944fd1c1fSVinay Kumar Yadav 7044fd1c1fSVinay Kumar Yadav kref_init(&csk->kref); 7144fd1c1fSVinay Kumar Yadav csk->cdev = cdev; 7244fd1c1fSVinay Kumar Yadav skb_queue_head_init(&csk->txq); 7344fd1c1fSVinay Kumar Yadav csk->wr_skb_head = NULL; 7444fd1c1fSVinay Kumar Yadav csk->wr_skb_tail = NULL; 7544fd1c1fSVinay Kumar Yadav csk->mss = MAX_MSS; 7644fd1c1fSVinay Kumar Yadav csk->tlshws.ofld = 1; 7744fd1c1fSVinay Kumar Yadav csk->tlshws.txkey = -1; 7844fd1c1fSVinay Kumar Yadav csk->tlshws.rxkey = -1; 7944fd1c1fSVinay Kumar Yadav csk->tlshws.mfs = TLS_MFS; 8044fd1c1fSVinay Kumar Yadav skb_queue_head_init(&csk->tlshws.sk_recv_queue); 8144fd1c1fSVinay Kumar Yadav return csk; 8244fd1c1fSVinay Kumar Yadav } 8344fd1c1fSVinay Kumar Yadav 8444fd1c1fSVinay Kumar Yadav static void chtls_sock_release(struct kref *ref) 8544fd1c1fSVinay Kumar Yadav { 8644fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = 8744fd1c1fSVinay Kumar Yadav container_of(ref, struct chtls_sock, kref); 8844fd1c1fSVinay Kumar Yadav 8944fd1c1fSVinay Kumar Yadav kfree(csk); 9044fd1c1fSVinay Kumar Yadav } 9144fd1c1fSVinay Kumar Yadav 9244fd1c1fSVinay Kumar Yadav static struct net_device *chtls_find_netdev(struct chtls_dev *cdev, 9344fd1c1fSVinay Kumar Yadav struct sock *sk) 9444fd1c1fSVinay Kumar Yadav { 9544fd1c1fSVinay Kumar Yadav struct net_device *ndev = cdev->ports[0]; 9644fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 9744fd1c1fSVinay Kumar Yadav struct net_device *temp; 9844fd1c1fSVinay Kumar Yadav int addr_type; 9944fd1c1fSVinay Kumar Yadav #endif 10044fd1c1fSVinay Kumar Yadav 10144fd1c1fSVinay Kumar Yadav switch (sk->sk_family) { 10244fd1c1fSVinay Kumar Yadav case PF_INET: 10344fd1c1fSVinay Kumar Yadav if (likely(!inet_sk(sk)->inet_rcv_saddr)) 10444fd1c1fSVinay Kumar Yadav return ndev; 10544fd1c1fSVinay Kumar Yadav ndev = __ip_dev_find(&init_net, inet_sk(sk)->inet_rcv_saddr, false); 10644fd1c1fSVinay Kumar Yadav break; 10744fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 10844fd1c1fSVinay Kumar Yadav case PF_INET6: 10944fd1c1fSVinay Kumar Yadav addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr); 11044fd1c1fSVinay Kumar Yadav if (likely(addr_type == IPV6_ADDR_ANY)) 11144fd1c1fSVinay Kumar Yadav return ndev; 11244fd1c1fSVinay Kumar Yadav 11344fd1c1fSVinay Kumar Yadav for_each_netdev_rcu(&init_net, temp) { 11444fd1c1fSVinay Kumar Yadav if (ipv6_chk_addr(&init_net, (struct in6_addr *) 11544fd1c1fSVinay Kumar Yadav &sk->sk_v6_rcv_saddr, temp, 1)) { 11644fd1c1fSVinay Kumar Yadav ndev = temp; 11744fd1c1fSVinay Kumar Yadav break; 11844fd1c1fSVinay Kumar Yadav } 11944fd1c1fSVinay Kumar Yadav } 12044fd1c1fSVinay Kumar Yadav break; 12144fd1c1fSVinay Kumar Yadav #endif 12244fd1c1fSVinay Kumar Yadav default: 12344fd1c1fSVinay Kumar Yadav return NULL; 12444fd1c1fSVinay Kumar Yadav } 12544fd1c1fSVinay Kumar Yadav 12644fd1c1fSVinay Kumar Yadav if (!ndev) 12744fd1c1fSVinay Kumar Yadav return NULL; 12844fd1c1fSVinay Kumar Yadav 12944fd1c1fSVinay Kumar Yadav if (is_vlan_dev(ndev)) 13044fd1c1fSVinay Kumar Yadav return vlan_dev_real_dev(ndev); 13144fd1c1fSVinay Kumar Yadav return ndev; 13244fd1c1fSVinay Kumar Yadav } 13344fd1c1fSVinay Kumar Yadav 13444fd1c1fSVinay Kumar Yadav static void assign_rxopt(struct sock *sk, unsigned int opt) 13544fd1c1fSVinay Kumar Yadav { 13644fd1c1fSVinay Kumar Yadav const struct chtls_dev *cdev; 13744fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 13844fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 13944fd1c1fSVinay Kumar Yadav 14044fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 14144fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 14244fd1c1fSVinay Kumar Yadav 14344fd1c1fSVinay Kumar Yadav cdev = csk->cdev; 14444fd1c1fSVinay Kumar Yadav tp->tcp_header_len = sizeof(struct tcphdr); 14544fd1c1fSVinay Kumar Yadav tp->rx_opt.mss_clamp = cdev->mtus[TCPOPT_MSS_G(opt)] - 40; 14644fd1c1fSVinay Kumar Yadav tp->mss_cache = tp->rx_opt.mss_clamp; 14744fd1c1fSVinay Kumar Yadav tp->rx_opt.tstamp_ok = TCPOPT_TSTAMP_G(opt); 14844fd1c1fSVinay Kumar Yadav tp->rx_opt.snd_wscale = TCPOPT_SACK_G(opt); 14944fd1c1fSVinay Kumar Yadav tp->rx_opt.wscale_ok = TCPOPT_WSCALE_OK_G(opt); 15044fd1c1fSVinay Kumar Yadav SND_WSCALE(tp) = TCPOPT_SND_WSCALE_G(opt); 15144fd1c1fSVinay Kumar Yadav if (!tp->rx_opt.wscale_ok) 15244fd1c1fSVinay Kumar Yadav tp->rx_opt.rcv_wscale = 0; 15344fd1c1fSVinay Kumar Yadav if (tp->rx_opt.tstamp_ok) { 15444fd1c1fSVinay Kumar Yadav tp->tcp_header_len += TCPOLEN_TSTAMP_ALIGNED; 15544fd1c1fSVinay Kumar Yadav tp->rx_opt.mss_clamp -= TCPOLEN_TSTAMP_ALIGNED; 15644fd1c1fSVinay Kumar Yadav } else if (csk->opt2 & TSTAMPS_EN_F) { 15744fd1c1fSVinay Kumar Yadav csk->opt2 &= ~TSTAMPS_EN_F; 15844fd1c1fSVinay Kumar Yadav csk->mtu_idx = TCPOPT_MSS_G(opt); 15944fd1c1fSVinay Kumar Yadav } 16044fd1c1fSVinay Kumar Yadav } 16144fd1c1fSVinay Kumar Yadav 16244fd1c1fSVinay Kumar Yadav static void chtls_purge_receive_queue(struct sock *sk) 16344fd1c1fSVinay Kumar Yadav { 16444fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 16544fd1c1fSVinay Kumar Yadav 16644fd1c1fSVinay Kumar Yadav while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) { 16744fd1c1fSVinay Kumar Yadav skb_dst_set(skb, (void *)NULL); 16844fd1c1fSVinay Kumar Yadav kfree_skb(skb); 16944fd1c1fSVinay Kumar Yadav } 17044fd1c1fSVinay Kumar Yadav } 17144fd1c1fSVinay Kumar Yadav 17244fd1c1fSVinay Kumar Yadav static void chtls_purge_write_queue(struct sock *sk) 17344fd1c1fSVinay Kumar Yadav { 17444fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); 17544fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 17644fd1c1fSVinay Kumar Yadav 17744fd1c1fSVinay Kumar Yadav while ((skb = __skb_dequeue(&csk->txq))) { 17844fd1c1fSVinay Kumar Yadav sk->sk_wmem_queued -= skb->truesize; 17944fd1c1fSVinay Kumar Yadav __kfree_skb(skb); 18044fd1c1fSVinay Kumar Yadav } 18144fd1c1fSVinay Kumar Yadav } 18244fd1c1fSVinay Kumar Yadav 18344fd1c1fSVinay Kumar Yadav static void chtls_purge_recv_queue(struct sock *sk) 18444fd1c1fSVinay Kumar Yadav { 18544fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); 18644fd1c1fSVinay Kumar Yadav struct chtls_hws *tlsk = &csk->tlshws; 18744fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 18844fd1c1fSVinay Kumar Yadav 18944fd1c1fSVinay Kumar Yadav while ((skb = __skb_dequeue(&tlsk->sk_recv_queue)) != NULL) { 19044fd1c1fSVinay Kumar Yadav skb_dst_set(skb, NULL); 19144fd1c1fSVinay Kumar Yadav kfree_skb(skb); 19244fd1c1fSVinay Kumar Yadav } 19344fd1c1fSVinay Kumar Yadav } 19444fd1c1fSVinay Kumar Yadav 19544fd1c1fSVinay Kumar Yadav static void abort_arp_failure(void *handle, struct sk_buff *skb) 19644fd1c1fSVinay Kumar Yadav { 19744fd1c1fSVinay Kumar Yadav struct cpl_abort_req *req = cplhdr(skb); 19844fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev; 19944fd1c1fSVinay Kumar Yadav 20044fd1c1fSVinay Kumar Yadav cdev = (struct chtls_dev *)handle; 20144fd1c1fSVinay Kumar Yadav req->cmd = CPL_ABORT_NO_RST; 20244fd1c1fSVinay Kumar Yadav cxgb4_ofld_send(cdev->lldi->ports[0], skb); 20344fd1c1fSVinay Kumar Yadav } 20444fd1c1fSVinay Kumar Yadav 20544fd1c1fSVinay Kumar Yadav static struct sk_buff *alloc_ctrl_skb(struct sk_buff *skb, int len) 20644fd1c1fSVinay Kumar Yadav { 20744fd1c1fSVinay Kumar Yadav if (likely(skb && !skb_shared(skb) && !skb_cloned(skb))) { 20844fd1c1fSVinay Kumar Yadav __skb_trim(skb, 0); 20944fd1c1fSVinay Kumar Yadav refcount_add(2, &skb->users); 21044fd1c1fSVinay Kumar Yadav } else { 21144fd1c1fSVinay Kumar Yadav skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL); 21244fd1c1fSVinay Kumar Yadav } 21344fd1c1fSVinay Kumar Yadav return skb; 21444fd1c1fSVinay Kumar Yadav } 21544fd1c1fSVinay Kumar Yadav 21644fd1c1fSVinay Kumar Yadav static void chtls_send_abort(struct sock *sk, int mode, struct sk_buff *skb) 21744fd1c1fSVinay Kumar Yadav { 21844fd1c1fSVinay Kumar Yadav struct cpl_abort_req *req; 21944fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 22044fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 22144fd1c1fSVinay Kumar Yadav 22244fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 22344fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 22444fd1c1fSVinay Kumar Yadav 22544fd1c1fSVinay Kumar Yadav if (!skb) 22644fd1c1fSVinay Kumar Yadav skb = alloc_ctrl_skb(csk->txdata_skb_cache, sizeof(*req)); 22744fd1c1fSVinay Kumar Yadav 22844fd1c1fSVinay Kumar Yadav req = (struct cpl_abort_req *)skb_put(skb, sizeof(*req)); 22944fd1c1fSVinay Kumar Yadav INIT_TP_WR_CPL(req, CPL_ABORT_REQ, csk->tid); 23044fd1c1fSVinay Kumar Yadav skb_set_queue_mapping(skb, (csk->txq_idx << 1) | CPL_PRIORITY_DATA); 23144fd1c1fSVinay Kumar Yadav req->rsvd0 = htonl(tp->snd_nxt); 23244fd1c1fSVinay Kumar Yadav req->rsvd1 = !csk_flag_nochk(csk, CSK_TX_DATA_SENT); 23344fd1c1fSVinay Kumar Yadav req->cmd = mode; 23444fd1c1fSVinay Kumar Yadav t4_set_arp_err_handler(skb, csk->cdev, abort_arp_failure); 23544fd1c1fSVinay Kumar Yadav send_or_defer(sk, tp, skb, mode == CPL_ABORT_SEND_RST); 23644fd1c1fSVinay Kumar Yadav } 23744fd1c1fSVinay Kumar Yadav 23844fd1c1fSVinay Kumar Yadav static void chtls_send_reset(struct sock *sk, int mode, struct sk_buff *skb) 23944fd1c1fSVinay Kumar Yadav { 24044fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); 24144fd1c1fSVinay Kumar Yadav 24244fd1c1fSVinay Kumar Yadav if (unlikely(csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) || 24344fd1c1fSVinay Kumar Yadav !csk->cdev)) { 24444fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_SYN_RECV) 24544fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_RST_ABORTED); 24644fd1c1fSVinay Kumar Yadav goto out; 24744fd1c1fSVinay Kumar Yadav } 24844fd1c1fSVinay Kumar Yadav 24944fd1c1fSVinay Kumar Yadav if (!csk_flag_nochk(csk, CSK_TX_DATA_SENT)) { 25044fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 25144fd1c1fSVinay Kumar Yadav 25244fd1c1fSVinay Kumar Yadav if (send_tx_flowc_wr(sk, 0, tp->snd_nxt, tp->rcv_nxt) < 0) 25344fd1c1fSVinay Kumar Yadav WARN_ONCE(1, "send tx flowc error"); 25444fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_TX_DATA_SENT); 25544fd1c1fSVinay Kumar Yadav } 25644fd1c1fSVinay Kumar Yadav 25744fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_ABORT_RPL_PENDING); 25844fd1c1fSVinay Kumar Yadav chtls_purge_write_queue(sk); 25944fd1c1fSVinay Kumar Yadav 26044fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_ABORT_SHUTDOWN); 26144fd1c1fSVinay Kumar Yadav if (sk->sk_state != TCP_SYN_RECV) 26244fd1c1fSVinay Kumar Yadav chtls_send_abort(sk, mode, skb); 26344fd1c1fSVinay Kumar Yadav else 26444fd1c1fSVinay Kumar Yadav goto out; 26544fd1c1fSVinay Kumar Yadav 26644fd1c1fSVinay Kumar Yadav return; 26744fd1c1fSVinay Kumar Yadav out: 26844fd1c1fSVinay Kumar Yadav kfree_skb(skb); 26944fd1c1fSVinay Kumar Yadav } 27044fd1c1fSVinay Kumar Yadav 27144fd1c1fSVinay Kumar Yadav static void release_tcp_port(struct sock *sk) 27244fd1c1fSVinay Kumar Yadav { 27344fd1c1fSVinay Kumar Yadav if (inet_csk(sk)->icsk_bind_hash) 27444fd1c1fSVinay Kumar Yadav inet_put_port(sk); 27544fd1c1fSVinay Kumar Yadav } 27644fd1c1fSVinay Kumar Yadav 27744fd1c1fSVinay Kumar Yadav static void tcp_uncork(struct sock *sk) 27844fd1c1fSVinay Kumar Yadav { 27944fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 28044fd1c1fSVinay Kumar Yadav 28144fd1c1fSVinay Kumar Yadav if (tp->nonagle & TCP_NAGLE_CORK) { 28244fd1c1fSVinay Kumar Yadav tp->nonagle &= ~TCP_NAGLE_CORK; 28344fd1c1fSVinay Kumar Yadav chtls_tcp_push(sk, 0); 28444fd1c1fSVinay Kumar Yadav } 28544fd1c1fSVinay Kumar Yadav } 28644fd1c1fSVinay Kumar Yadav 28744fd1c1fSVinay Kumar Yadav static void chtls_close_conn(struct sock *sk) 28844fd1c1fSVinay Kumar Yadav { 28944fd1c1fSVinay Kumar Yadav struct cpl_close_con_req *req; 29044fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 29144fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 29244fd1c1fSVinay Kumar Yadav unsigned int tid; 29344fd1c1fSVinay Kumar Yadav unsigned int len; 29444fd1c1fSVinay Kumar Yadav 29544fd1c1fSVinay Kumar Yadav len = roundup(sizeof(struct cpl_close_con_req), 16); 29644fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 29744fd1c1fSVinay Kumar Yadav tid = csk->tid; 29844fd1c1fSVinay Kumar Yadav 29944fd1c1fSVinay Kumar Yadav skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL); 30044fd1c1fSVinay Kumar Yadav req = (struct cpl_close_con_req *)__skb_put(skb, len); 30144fd1c1fSVinay Kumar Yadav memset(req, 0, len); 30244fd1c1fSVinay Kumar Yadav req->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) | 30344fd1c1fSVinay Kumar Yadav FW_WR_IMMDLEN_V(sizeof(*req) - 30444fd1c1fSVinay Kumar Yadav sizeof(req->wr))); 30544fd1c1fSVinay Kumar Yadav req->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)) | 30644fd1c1fSVinay Kumar Yadav FW_WR_FLOWID_V(tid)); 30744fd1c1fSVinay Kumar Yadav 30844fd1c1fSVinay Kumar Yadav OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, tid)); 30944fd1c1fSVinay Kumar Yadav 31044fd1c1fSVinay Kumar Yadav tcp_uncork(sk); 31144fd1c1fSVinay Kumar Yadav skb_entail(sk, skb, ULPCB_FLAG_NO_HDR | ULPCB_FLAG_NO_APPEND); 31244fd1c1fSVinay Kumar Yadav if (sk->sk_state != TCP_SYN_SENT) 31344fd1c1fSVinay Kumar Yadav chtls_push_frames(csk, 1); 31444fd1c1fSVinay Kumar Yadav } 31544fd1c1fSVinay Kumar Yadav 31644fd1c1fSVinay Kumar Yadav /* 31744fd1c1fSVinay Kumar Yadav * Perform a state transition during close and return the actions indicated 31844fd1c1fSVinay Kumar Yadav * for the transition. Do not make this function inline, the main reason 31944fd1c1fSVinay Kumar Yadav * it exists at all is to avoid multiple inlining of tcp_set_state. 32044fd1c1fSVinay Kumar Yadav */ 32144fd1c1fSVinay Kumar Yadav static int make_close_transition(struct sock *sk) 32244fd1c1fSVinay Kumar Yadav { 32344fd1c1fSVinay Kumar Yadav int next = (int)new_state[sk->sk_state]; 32444fd1c1fSVinay Kumar Yadav 32544fd1c1fSVinay Kumar Yadav tcp_set_state(sk, next & TCP_STATE_MASK); 32644fd1c1fSVinay Kumar Yadav return next & TCP_ACTION_FIN; 32744fd1c1fSVinay Kumar Yadav } 32844fd1c1fSVinay Kumar Yadav 32944fd1c1fSVinay Kumar Yadav void chtls_close(struct sock *sk, long timeout) 33044fd1c1fSVinay Kumar Yadav { 33144fd1c1fSVinay Kumar Yadav int data_lost, prev_state; 33244fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 33344fd1c1fSVinay Kumar Yadav 33444fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 33544fd1c1fSVinay Kumar Yadav 33644fd1c1fSVinay Kumar Yadav lock_sock(sk); 33744fd1c1fSVinay Kumar Yadav sk->sk_shutdown |= SHUTDOWN_MASK; 33844fd1c1fSVinay Kumar Yadav 33944fd1c1fSVinay Kumar Yadav data_lost = skb_queue_len(&sk->sk_receive_queue); 34044fd1c1fSVinay Kumar Yadav data_lost |= skb_queue_len(&csk->tlshws.sk_recv_queue); 34144fd1c1fSVinay Kumar Yadav chtls_purge_recv_queue(sk); 34244fd1c1fSVinay Kumar Yadav chtls_purge_receive_queue(sk); 34344fd1c1fSVinay Kumar Yadav 34444fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_CLOSE) { 34544fd1c1fSVinay Kumar Yadav goto wait; 34644fd1c1fSVinay Kumar Yadav } else if (data_lost || sk->sk_state == TCP_SYN_SENT) { 34744fd1c1fSVinay Kumar Yadav chtls_send_reset(sk, CPL_ABORT_SEND_RST, NULL); 34844fd1c1fSVinay Kumar Yadav release_tcp_port(sk); 34944fd1c1fSVinay Kumar Yadav goto unlock; 35044fd1c1fSVinay Kumar Yadav } else if (sock_flag(sk, SOCK_LINGER) && !sk->sk_lingertime) { 35144fd1c1fSVinay Kumar Yadav sk->sk_prot->disconnect(sk, 0); 35244fd1c1fSVinay Kumar Yadav } else if (make_close_transition(sk)) { 35344fd1c1fSVinay Kumar Yadav chtls_close_conn(sk); 35444fd1c1fSVinay Kumar Yadav } 35544fd1c1fSVinay Kumar Yadav wait: 35644fd1c1fSVinay Kumar Yadav if (timeout) 35744fd1c1fSVinay Kumar Yadav sk_stream_wait_close(sk, timeout); 35844fd1c1fSVinay Kumar Yadav 35944fd1c1fSVinay Kumar Yadav unlock: 36044fd1c1fSVinay Kumar Yadav prev_state = sk->sk_state; 36144fd1c1fSVinay Kumar Yadav sock_hold(sk); 36244fd1c1fSVinay Kumar Yadav sock_orphan(sk); 36344fd1c1fSVinay Kumar Yadav 36444fd1c1fSVinay Kumar Yadav release_sock(sk); 36544fd1c1fSVinay Kumar Yadav 36644fd1c1fSVinay Kumar Yadav local_bh_disable(); 36744fd1c1fSVinay Kumar Yadav bh_lock_sock(sk); 36844fd1c1fSVinay Kumar Yadav 36944fd1c1fSVinay Kumar Yadav if (prev_state != TCP_CLOSE && sk->sk_state == TCP_CLOSE) 37044fd1c1fSVinay Kumar Yadav goto out; 37144fd1c1fSVinay Kumar Yadav 37244fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_FIN_WAIT2 && tcp_sk(sk)->linger2 < 0 && 37344fd1c1fSVinay Kumar Yadav !csk_flag(sk, CSK_ABORT_SHUTDOWN)) { 37444fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 37544fd1c1fSVinay Kumar Yadav 37644fd1c1fSVinay Kumar Yadav skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC); 37744fd1c1fSVinay Kumar Yadav if (skb) 37844fd1c1fSVinay Kumar Yadav chtls_send_reset(sk, CPL_ABORT_SEND_RST, skb); 37944fd1c1fSVinay Kumar Yadav } 38044fd1c1fSVinay Kumar Yadav 38144fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_CLOSE) 38244fd1c1fSVinay Kumar Yadav inet_csk_destroy_sock(sk); 38344fd1c1fSVinay Kumar Yadav 38444fd1c1fSVinay Kumar Yadav out: 38544fd1c1fSVinay Kumar Yadav bh_unlock_sock(sk); 38644fd1c1fSVinay Kumar Yadav local_bh_enable(); 38744fd1c1fSVinay Kumar Yadav sock_put(sk); 38844fd1c1fSVinay Kumar Yadav } 38944fd1c1fSVinay Kumar Yadav 39044fd1c1fSVinay Kumar Yadav /* 39144fd1c1fSVinay Kumar Yadav * Wait until a socket enters on of the given states. 39244fd1c1fSVinay Kumar Yadav */ 39344fd1c1fSVinay Kumar Yadav static int wait_for_states(struct sock *sk, unsigned int states) 39444fd1c1fSVinay Kumar Yadav { 39544fd1c1fSVinay Kumar Yadav DECLARE_WAITQUEUE(wait, current); 39644fd1c1fSVinay Kumar Yadav struct socket_wq _sk_wq; 39744fd1c1fSVinay Kumar Yadav long current_timeo; 39844fd1c1fSVinay Kumar Yadav int err = 0; 39944fd1c1fSVinay Kumar Yadav 40044fd1c1fSVinay Kumar Yadav current_timeo = 200; 40144fd1c1fSVinay Kumar Yadav 40244fd1c1fSVinay Kumar Yadav /* 40344fd1c1fSVinay Kumar Yadav * We want this to work even when there's no associated struct socket. 40444fd1c1fSVinay Kumar Yadav * In that case we provide a temporary wait_queue_head_t. 40544fd1c1fSVinay Kumar Yadav */ 40644fd1c1fSVinay Kumar Yadav if (!sk->sk_wq) { 40744fd1c1fSVinay Kumar Yadav init_waitqueue_head(&_sk_wq.wait); 40844fd1c1fSVinay Kumar Yadav _sk_wq.fasync_list = NULL; 40944fd1c1fSVinay Kumar Yadav init_rcu_head_on_stack(&_sk_wq.rcu); 41044fd1c1fSVinay Kumar Yadav RCU_INIT_POINTER(sk->sk_wq, &_sk_wq); 41144fd1c1fSVinay Kumar Yadav } 41244fd1c1fSVinay Kumar Yadav 41344fd1c1fSVinay Kumar Yadav add_wait_queue(sk_sleep(sk), &wait); 41444fd1c1fSVinay Kumar Yadav while (!sk_in_state(sk, states)) { 41544fd1c1fSVinay Kumar Yadav if (!current_timeo) { 41644fd1c1fSVinay Kumar Yadav err = -EBUSY; 41744fd1c1fSVinay Kumar Yadav break; 41844fd1c1fSVinay Kumar Yadav } 41944fd1c1fSVinay Kumar Yadav if (signal_pending(current)) { 42044fd1c1fSVinay Kumar Yadav err = sock_intr_errno(current_timeo); 42144fd1c1fSVinay Kumar Yadav break; 42244fd1c1fSVinay Kumar Yadav } 42344fd1c1fSVinay Kumar Yadav set_current_state(TASK_UNINTERRUPTIBLE); 42444fd1c1fSVinay Kumar Yadav release_sock(sk); 42544fd1c1fSVinay Kumar Yadav if (!sk_in_state(sk, states)) 42644fd1c1fSVinay Kumar Yadav current_timeo = schedule_timeout(current_timeo); 42744fd1c1fSVinay Kumar Yadav __set_current_state(TASK_RUNNING); 42844fd1c1fSVinay Kumar Yadav lock_sock(sk); 42944fd1c1fSVinay Kumar Yadav } 43044fd1c1fSVinay Kumar Yadav remove_wait_queue(sk_sleep(sk), &wait); 43144fd1c1fSVinay Kumar Yadav 43244fd1c1fSVinay Kumar Yadav if (rcu_dereference(sk->sk_wq) == &_sk_wq) 43344fd1c1fSVinay Kumar Yadav sk->sk_wq = NULL; 43444fd1c1fSVinay Kumar Yadav return err; 43544fd1c1fSVinay Kumar Yadav } 43644fd1c1fSVinay Kumar Yadav 43744fd1c1fSVinay Kumar Yadav int chtls_disconnect(struct sock *sk, int flags) 43844fd1c1fSVinay Kumar Yadav { 43944fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 44044fd1c1fSVinay Kumar Yadav int err; 44144fd1c1fSVinay Kumar Yadav 44244fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 44344fd1c1fSVinay Kumar Yadav chtls_purge_recv_queue(sk); 44444fd1c1fSVinay Kumar Yadav chtls_purge_receive_queue(sk); 44544fd1c1fSVinay Kumar Yadav chtls_purge_write_queue(sk); 44644fd1c1fSVinay Kumar Yadav 44744fd1c1fSVinay Kumar Yadav if (sk->sk_state != TCP_CLOSE) { 44844fd1c1fSVinay Kumar Yadav sk->sk_err = ECONNRESET; 44944fd1c1fSVinay Kumar Yadav chtls_send_reset(sk, CPL_ABORT_SEND_RST, NULL); 45044fd1c1fSVinay Kumar Yadav err = wait_for_states(sk, TCPF_CLOSE); 45144fd1c1fSVinay Kumar Yadav if (err) 45244fd1c1fSVinay Kumar Yadav return err; 45344fd1c1fSVinay Kumar Yadav } 45444fd1c1fSVinay Kumar Yadav chtls_purge_recv_queue(sk); 45544fd1c1fSVinay Kumar Yadav chtls_purge_receive_queue(sk); 45644fd1c1fSVinay Kumar Yadav tp->max_window = 0xFFFF << (tp->rx_opt.snd_wscale); 45744fd1c1fSVinay Kumar Yadav return tcp_disconnect(sk, flags); 45844fd1c1fSVinay Kumar Yadav } 45944fd1c1fSVinay Kumar Yadav 46044fd1c1fSVinay Kumar Yadav #define SHUTDOWN_ELIGIBLE_STATE (TCPF_ESTABLISHED | \ 46144fd1c1fSVinay Kumar Yadav TCPF_SYN_RECV | TCPF_CLOSE_WAIT) 46244fd1c1fSVinay Kumar Yadav void chtls_shutdown(struct sock *sk, int how) 46344fd1c1fSVinay Kumar Yadav { 46444fd1c1fSVinay Kumar Yadav if ((how & SEND_SHUTDOWN) && 46544fd1c1fSVinay Kumar Yadav sk_in_state(sk, SHUTDOWN_ELIGIBLE_STATE) && 46644fd1c1fSVinay Kumar Yadav make_close_transition(sk)) 46744fd1c1fSVinay Kumar Yadav chtls_close_conn(sk); 46844fd1c1fSVinay Kumar Yadav } 46944fd1c1fSVinay Kumar Yadav 47044fd1c1fSVinay Kumar Yadav void chtls_destroy_sock(struct sock *sk) 47144fd1c1fSVinay Kumar Yadav { 47244fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 47344fd1c1fSVinay Kumar Yadav 47444fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 47544fd1c1fSVinay Kumar Yadav chtls_purge_recv_queue(sk); 47644fd1c1fSVinay Kumar Yadav csk->ulp_mode = ULP_MODE_NONE; 47744fd1c1fSVinay Kumar Yadav chtls_purge_write_queue(sk); 47844fd1c1fSVinay Kumar Yadav free_tls_keyid(sk); 47944fd1c1fSVinay Kumar Yadav kref_put(&csk->kref, chtls_sock_release); 48044fd1c1fSVinay Kumar Yadav csk->cdev = NULL; 48144fd1c1fSVinay Kumar Yadav if (sk->sk_family == AF_INET) 48244fd1c1fSVinay Kumar Yadav sk->sk_prot = &tcp_prot; 48344fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 48444fd1c1fSVinay Kumar Yadav else 48544fd1c1fSVinay Kumar Yadav sk->sk_prot = &tcpv6_prot; 48644fd1c1fSVinay Kumar Yadav #endif 48744fd1c1fSVinay Kumar Yadav sk->sk_prot->destroy(sk); 48844fd1c1fSVinay Kumar Yadav } 48944fd1c1fSVinay Kumar Yadav 49044fd1c1fSVinay Kumar Yadav static void reset_listen_child(struct sock *child) 49144fd1c1fSVinay Kumar Yadav { 49244fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(child); 49344fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 49444fd1c1fSVinay Kumar Yadav 49544fd1c1fSVinay Kumar Yadav skb = alloc_ctrl_skb(csk->txdata_skb_cache, 49644fd1c1fSVinay Kumar Yadav sizeof(struct cpl_abort_req)); 49744fd1c1fSVinay Kumar Yadav 49844fd1c1fSVinay Kumar Yadav chtls_send_reset(child, CPL_ABORT_SEND_RST, skb); 49944fd1c1fSVinay Kumar Yadav sock_orphan(child); 50044fd1c1fSVinay Kumar Yadav INC_ORPHAN_COUNT(child); 50144fd1c1fSVinay Kumar Yadav if (child->sk_state == TCP_CLOSE) 50244fd1c1fSVinay Kumar Yadav inet_csk_destroy_sock(child); 50344fd1c1fSVinay Kumar Yadav } 50444fd1c1fSVinay Kumar Yadav 50544fd1c1fSVinay Kumar Yadav static void chtls_disconnect_acceptq(struct sock *listen_sk) 50644fd1c1fSVinay Kumar Yadav { 50744fd1c1fSVinay Kumar Yadav struct request_sock **pprev; 50844fd1c1fSVinay Kumar Yadav 50944fd1c1fSVinay Kumar Yadav pprev = ACCEPT_QUEUE(listen_sk); 51044fd1c1fSVinay Kumar Yadav while (*pprev) { 51144fd1c1fSVinay Kumar Yadav struct request_sock *req = *pprev; 51244fd1c1fSVinay Kumar Yadav 51344fd1c1fSVinay Kumar Yadav if (req->rsk_ops == &chtls_rsk_ops || 51444fd1c1fSVinay Kumar Yadav req->rsk_ops == &chtls_rsk_opsv6) { 51544fd1c1fSVinay Kumar Yadav struct sock *child = req->sk; 51644fd1c1fSVinay Kumar Yadav 51744fd1c1fSVinay Kumar Yadav *pprev = req->dl_next; 51844fd1c1fSVinay Kumar Yadav sk_acceptq_removed(listen_sk); 51944fd1c1fSVinay Kumar Yadav reqsk_put(req); 52044fd1c1fSVinay Kumar Yadav sock_hold(child); 52144fd1c1fSVinay Kumar Yadav local_bh_disable(); 52244fd1c1fSVinay Kumar Yadav bh_lock_sock(child); 52344fd1c1fSVinay Kumar Yadav release_tcp_port(child); 52444fd1c1fSVinay Kumar Yadav reset_listen_child(child); 52544fd1c1fSVinay Kumar Yadav bh_unlock_sock(child); 52644fd1c1fSVinay Kumar Yadav local_bh_enable(); 52744fd1c1fSVinay Kumar Yadav sock_put(child); 52844fd1c1fSVinay Kumar Yadav } else { 52944fd1c1fSVinay Kumar Yadav pprev = &req->dl_next; 53044fd1c1fSVinay Kumar Yadav } 53144fd1c1fSVinay Kumar Yadav } 53244fd1c1fSVinay Kumar Yadav } 53344fd1c1fSVinay Kumar Yadav 53444fd1c1fSVinay Kumar Yadav static int listen_hashfn(const struct sock *sk) 53544fd1c1fSVinay Kumar Yadav { 53644fd1c1fSVinay Kumar Yadav return ((unsigned long)sk >> 10) & (LISTEN_INFO_HASH_SIZE - 1); 53744fd1c1fSVinay Kumar Yadav } 53844fd1c1fSVinay Kumar Yadav 53944fd1c1fSVinay Kumar Yadav static struct listen_info *listen_hash_add(struct chtls_dev *cdev, 54044fd1c1fSVinay Kumar Yadav struct sock *sk, 54144fd1c1fSVinay Kumar Yadav unsigned int stid) 54244fd1c1fSVinay Kumar Yadav { 54344fd1c1fSVinay Kumar Yadav struct listen_info *p = kmalloc(sizeof(*p), GFP_KERNEL); 54444fd1c1fSVinay Kumar Yadav 54544fd1c1fSVinay Kumar Yadav if (p) { 54644fd1c1fSVinay Kumar Yadav int key = listen_hashfn(sk); 54744fd1c1fSVinay Kumar Yadav 54844fd1c1fSVinay Kumar Yadav p->sk = sk; 54944fd1c1fSVinay Kumar Yadav p->stid = stid; 55044fd1c1fSVinay Kumar Yadav spin_lock(&cdev->listen_lock); 55144fd1c1fSVinay Kumar Yadav p->next = cdev->listen_hash_tab[key]; 55244fd1c1fSVinay Kumar Yadav cdev->listen_hash_tab[key] = p; 55344fd1c1fSVinay Kumar Yadav spin_unlock(&cdev->listen_lock); 55444fd1c1fSVinay Kumar Yadav } 55544fd1c1fSVinay Kumar Yadav return p; 55644fd1c1fSVinay Kumar Yadav } 55744fd1c1fSVinay Kumar Yadav 55844fd1c1fSVinay Kumar Yadav static int listen_hash_find(struct chtls_dev *cdev, 55944fd1c1fSVinay Kumar Yadav struct sock *sk) 56044fd1c1fSVinay Kumar Yadav { 56144fd1c1fSVinay Kumar Yadav struct listen_info *p; 56244fd1c1fSVinay Kumar Yadav int stid = -1; 56344fd1c1fSVinay Kumar Yadav int key; 56444fd1c1fSVinay Kumar Yadav 56544fd1c1fSVinay Kumar Yadav key = listen_hashfn(sk); 56644fd1c1fSVinay Kumar Yadav 56744fd1c1fSVinay Kumar Yadav spin_lock(&cdev->listen_lock); 56844fd1c1fSVinay Kumar Yadav for (p = cdev->listen_hash_tab[key]; p; p = p->next) 56944fd1c1fSVinay Kumar Yadav if (p->sk == sk) { 57044fd1c1fSVinay Kumar Yadav stid = p->stid; 57144fd1c1fSVinay Kumar Yadav break; 57244fd1c1fSVinay Kumar Yadav } 57344fd1c1fSVinay Kumar Yadav spin_unlock(&cdev->listen_lock); 57444fd1c1fSVinay Kumar Yadav return stid; 57544fd1c1fSVinay Kumar Yadav } 57644fd1c1fSVinay Kumar Yadav 57744fd1c1fSVinay Kumar Yadav static int listen_hash_del(struct chtls_dev *cdev, 57844fd1c1fSVinay Kumar Yadav struct sock *sk) 57944fd1c1fSVinay Kumar Yadav { 58044fd1c1fSVinay Kumar Yadav struct listen_info *p, **prev; 58144fd1c1fSVinay Kumar Yadav int stid = -1; 58244fd1c1fSVinay Kumar Yadav int key; 58344fd1c1fSVinay Kumar Yadav 58444fd1c1fSVinay Kumar Yadav key = listen_hashfn(sk); 58544fd1c1fSVinay Kumar Yadav prev = &cdev->listen_hash_tab[key]; 58644fd1c1fSVinay Kumar Yadav 58744fd1c1fSVinay Kumar Yadav spin_lock(&cdev->listen_lock); 58844fd1c1fSVinay Kumar Yadav for (p = *prev; p; prev = &p->next, p = p->next) 58944fd1c1fSVinay Kumar Yadav if (p->sk == sk) { 59044fd1c1fSVinay Kumar Yadav stid = p->stid; 59144fd1c1fSVinay Kumar Yadav *prev = p->next; 59244fd1c1fSVinay Kumar Yadav kfree(p); 59344fd1c1fSVinay Kumar Yadav break; 59444fd1c1fSVinay Kumar Yadav } 59544fd1c1fSVinay Kumar Yadav spin_unlock(&cdev->listen_lock); 59644fd1c1fSVinay Kumar Yadav return stid; 59744fd1c1fSVinay Kumar Yadav } 59844fd1c1fSVinay Kumar Yadav 59944fd1c1fSVinay Kumar Yadav static void cleanup_syn_rcv_conn(struct sock *child, struct sock *parent) 60044fd1c1fSVinay Kumar Yadav { 60144fd1c1fSVinay Kumar Yadav struct request_sock *req; 60244fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 60344fd1c1fSVinay Kumar Yadav 60444fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(child); 60544fd1c1fSVinay Kumar Yadav req = csk->passive_reap_next; 60644fd1c1fSVinay Kumar Yadav 60744fd1c1fSVinay Kumar Yadav reqsk_queue_removed(&inet_csk(parent)->icsk_accept_queue, req); 60844fd1c1fSVinay Kumar Yadav __skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq); 60944fd1c1fSVinay Kumar Yadav chtls_reqsk_free(req); 61044fd1c1fSVinay Kumar Yadav csk->passive_reap_next = NULL; 61144fd1c1fSVinay Kumar Yadav } 61244fd1c1fSVinay Kumar Yadav 61344fd1c1fSVinay Kumar Yadav static void chtls_reset_synq(struct listen_ctx *listen_ctx) 61444fd1c1fSVinay Kumar Yadav { 61544fd1c1fSVinay Kumar Yadav struct sock *listen_sk = listen_ctx->lsk; 61644fd1c1fSVinay Kumar Yadav 61744fd1c1fSVinay Kumar Yadav while (!skb_queue_empty(&listen_ctx->synq)) { 61844fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = 61944fd1c1fSVinay Kumar Yadav container_of((struct synq *)__skb_dequeue 62044fd1c1fSVinay Kumar Yadav (&listen_ctx->synq), struct chtls_sock, synq); 62144fd1c1fSVinay Kumar Yadav struct sock *child = csk->sk; 62244fd1c1fSVinay Kumar Yadav 62344fd1c1fSVinay Kumar Yadav cleanup_syn_rcv_conn(child, listen_sk); 62444fd1c1fSVinay Kumar Yadav sock_hold(child); 62544fd1c1fSVinay Kumar Yadav local_bh_disable(); 62644fd1c1fSVinay Kumar Yadav bh_lock_sock(child); 62744fd1c1fSVinay Kumar Yadav release_tcp_port(child); 62844fd1c1fSVinay Kumar Yadav reset_listen_child(child); 62944fd1c1fSVinay Kumar Yadav bh_unlock_sock(child); 63044fd1c1fSVinay Kumar Yadav local_bh_enable(); 63144fd1c1fSVinay Kumar Yadav sock_put(child); 63244fd1c1fSVinay Kumar Yadav } 63344fd1c1fSVinay Kumar Yadav } 63444fd1c1fSVinay Kumar Yadav 63544fd1c1fSVinay Kumar Yadav int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk) 63644fd1c1fSVinay Kumar Yadav { 63744fd1c1fSVinay Kumar Yadav struct net_device *ndev; 63844fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 63944fd1c1fSVinay Kumar Yadav bool clip_valid = false; 64044fd1c1fSVinay Kumar Yadav #endif 64144fd1c1fSVinay Kumar Yadav struct listen_ctx *ctx; 64244fd1c1fSVinay Kumar Yadav struct adapter *adap; 64344fd1c1fSVinay Kumar Yadav struct port_info *pi; 64444fd1c1fSVinay Kumar Yadav int ret = 0; 64544fd1c1fSVinay Kumar Yadav int stid; 64644fd1c1fSVinay Kumar Yadav 64744fd1c1fSVinay Kumar Yadav rcu_read_lock(); 64844fd1c1fSVinay Kumar Yadav ndev = chtls_find_netdev(cdev, sk); 64944fd1c1fSVinay Kumar Yadav rcu_read_unlock(); 65044fd1c1fSVinay Kumar Yadav if (!ndev) 65144fd1c1fSVinay Kumar Yadav return -EBADF; 65244fd1c1fSVinay Kumar Yadav 65344fd1c1fSVinay Kumar Yadav pi = netdev_priv(ndev); 65444fd1c1fSVinay Kumar Yadav adap = pi->adapter; 65544fd1c1fSVinay Kumar Yadav if (!(adap->flags & CXGB4_FULL_INIT_DONE)) 65644fd1c1fSVinay Kumar Yadav return -EBADF; 65744fd1c1fSVinay Kumar Yadav 65844fd1c1fSVinay Kumar Yadav if (listen_hash_find(cdev, sk) >= 0) /* already have it */ 65944fd1c1fSVinay Kumar Yadav return -EADDRINUSE; 66044fd1c1fSVinay Kumar Yadav 66144fd1c1fSVinay Kumar Yadav ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); 66244fd1c1fSVinay Kumar Yadav if (!ctx) 66344fd1c1fSVinay Kumar Yadav return -ENOMEM; 66444fd1c1fSVinay Kumar Yadav 66544fd1c1fSVinay Kumar Yadav __module_get(THIS_MODULE); 66644fd1c1fSVinay Kumar Yadav ctx->lsk = sk; 66744fd1c1fSVinay Kumar Yadav ctx->cdev = cdev; 66844fd1c1fSVinay Kumar Yadav ctx->state = T4_LISTEN_START_PENDING; 66944fd1c1fSVinay Kumar Yadav skb_queue_head_init(&ctx->synq); 67044fd1c1fSVinay Kumar Yadav 67144fd1c1fSVinay Kumar Yadav stid = cxgb4_alloc_stid(cdev->tids, sk->sk_family, ctx); 67244fd1c1fSVinay Kumar Yadav if (stid < 0) 67344fd1c1fSVinay Kumar Yadav goto free_ctx; 67444fd1c1fSVinay Kumar Yadav 67544fd1c1fSVinay Kumar Yadav sock_hold(sk); 67644fd1c1fSVinay Kumar Yadav if (!listen_hash_add(cdev, sk, stid)) 67744fd1c1fSVinay Kumar Yadav goto free_stid; 67844fd1c1fSVinay Kumar Yadav 67944fd1c1fSVinay Kumar Yadav if (sk->sk_family == PF_INET) { 68044fd1c1fSVinay Kumar Yadav ret = cxgb4_create_server(ndev, stid, 68144fd1c1fSVinay Kumar Yadav inet_sk(sk)->inet_rcv_saddr, 68244fd1c1fSVinay Kumar Yadav inet_sk(sk)->inet_sport, 0, 68344fd1c1fSVinay Kumar Yadav cdev->lldi->rxq_ids[0]); 68444fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 68544fd1c1fSVinay Kumar Yadav } else { 68644fd1c1fSVinay Kumar Yadav int addr_type; 68744fd1c1fSVinay Kumar Yadav 68844fd1c1fSVinay Kumar Yadav addr_type = ipv6_addr_type(&sk->sk_v6_rcv_saddr); 68944fd1c1fSVinay Kumar Yadav if (addr_type != IPV6_ADDR_ANY) { 69044fd1c1fSVinay Kumar Yadav ret = cxgb4_clip_get(ndev, (const u32 *) 69144fd1c1fSVinay Kumar Yadav &sk->sk_v6_rcv_saddr, 1); 69244fd1c1fSVinay Kumar Yadav if (ret) 69344fd1c1fSVinay Kumar Yadav goto del_hash; 69444fd1c1fSVinay Kumar Yadav clip_valid = true; 69544fd1c1fSVinay Kumar Yadav } 69644fd1c1fSVinay Kumar Yadav ret = cxgb4_create_server6(ndev, stid, 69744fd1c1fSVinay Kumar Yadav &sk->sk_v6_rcv_saddr, 69844fd1c1fSVinay Kumar Yadav inet_sk(sk)->inet_sport, 69944fd1c1fSVinay Kumar Yadav cdev->lldi->rxq_ids[0]); 70044fd1c1fSVinay Kumar Yadav #endif 70144fd1c1fSVinay Kumar Yadav } 70244fd1c1fSVinay Kumar Yadav if (ret > 0) 70344fd1c1fSVinay Kumar Yadav ret = net_xmit_errno(ret); 70444fd1c1fSVinay Kumar Yadav if (ret) 70544fd1c1fSVinay Kumar Yadav goto del_hash; 70644fd1c1fSVinay Kumar Yadav return 0; 70744fd1c1fSVinay Kumar Yadav del_hash: 70844fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 70944fd1c1fSVinay Kumar Yadav if (clip_valid) 71044fd1c1fSVinay Kumar Yadav cxgb4_clip_release(ndev, (const u32 *)&sk->sk_v6_rcv_saddr, 1); 71144fd1c1fSVinay Kumar Yadav #endif 71244fd1c1fSVinay Kumar Yadav listen_hash_del(cdev, sk); 71344fd1c1fSVinay Kumar Yadav free_stid: 71444fd1c1fSVinay Kumar Yadav cxgb4_free_stid(cdev->tids, stid, sk->sk_family); 71544fd1c1fSVinay Kumar Yadav sock_put(sk); 71644fd1c1fSVinay Kumar Yadav free_ctx: 71744fd1c1fSVinay Kumar Yadav kfree(ctx); 71844fd1c1fSVinay Kumar Yadav module_put(THIS_MODULE); 71944fd1c1fSVinay Kumar Yadav return -EBADF; 72044fd1c1fSVinay Kumar Yadav } 72144fd1c1fSVinay Kumar Yadav 72244fd1c1fSVinay Kumar Yadav void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk) 72344fd1c1fSVinay Kumar Yadav { 72444fd1c1fSVinay Kumar Yadav struct listen_ctx *listen_ctx; 72544fd1c1fSVinay Kumar Yadav int stid; 72644fd1c1fSVinay Kumar Yadav 72744fd1c1fSVinay Kumar Yadav stid = listen_hash_del(cdev, sk); 72844fd1c1fSVinay Kumar Yadav if (stid < 0) 72944fd1c1fSVinay Kumar Yadav return; 73044fd1c1fSVinay Kumar Yadav 73144fd1c1fSVinay Kumar Yadav listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid); 73244fd1c1fSVinay Kumar Yadav chtls_reset_synq(listen_ctx); 73344fd1c1fSVinay Kumar Yadav 73444fd1c1fSVinay Kumar Yadav cxgb4_remove_server(cdev->lldi->ports[0], stid, 73544fd1c1fSVinay Kumar Yadav cdev->lldi->rxq_ids[0], sk->sk_family == PF_INET6); 73644fd1c1fSVinay Kumar Yadav 73744fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 73844fd1c1fSVinay Kumar Yadav if (sk->sk_family == PF_INET6) { 73944fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 74044fd1c1fSVinay Kumar Yadav int addr_type = 0; 74144fd1c1fSVinay Kumar Yadav 74244fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 74344fd1c1fSVinay Kumar Yadav addr_type = ipv6_addr_type((const struct in6_addr *) 74444fd1c1fSVinay Kumar Yadav &sk->sk_v6_rcv_saddr); 74544fd1c1fSVinay Kumar Yadav if (addr_type != IPV6_ADDR_ANY) 74644fd1c1fSVinay Kumar Yadav cxgb4_clip_release(csk->egress_dev, (const u32 *) 74744fd1c1fSVinay Kumar Yadav &sk->sk_v6_rcv_saddr, 1); 74844fd1c1fSVinay Kumar Yadav } 74944fd1c1fSVinay Kumar Yadav #endif 75044fd1c1fSVinay Kumar Yadav chtls_disconnect_acceptq(sk); 75144fd1c1fSVinay Kumar Yadav } 75244fd1c1fSVinay Kumar Yadav 75344fd1c1fSVinay Kumar Yadav static int chtls_pass_open_rpl(struct chtls_dev *cdev, struct sk_buff *skb) 75444fd1c1fSVinay Kumar Yadav { 75544fd1c1fSVinay Kumar Yadav struct cpl_pass_open_rpl *rpl = cplhdr(skb) + RSS_HDR; 75644fd1c1fSVinay Kumar Yadav unsigned int stid = GET_TID(rpl); 75744fd1c1fSVinay Kumar Yadav struct listen_ctx *listen_ctx; 75844fd1c1fSVinay Kumar Yadav 75944fd1c1fSVinay Kumar Yadav listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid); 76044fd1c1fSVinay Kumar Yadav if (!listen_ctx) 76144fd1c1fSVinay Kumar Yadav return CPL_RET_BUF_DONE; 76244fd1c1fSVinay Kumar Yadav 76344fd1c1fSVinay Kumar Yadav if (listen_ctx->state == T4_LISTEN_START_PENDING) { 76444fd1c1fSVinay Kumar Yadav listen_ctx->state = T4_LISTEN_STARTED; 76544fd1c1fSVinay Kumar Yadav return CPL_RET_BUF_DONE; 76644fd1c1fSVinay Kumar Yadav } 76744fd1c1fSVinay Kumar Yadav 76844fd1c1fSVinay Kumar Yadav if (rpl->status != CPL_ERR_NONE) { 76944fd1c1fSVinay Kumar Yadav pr_info("Unexpected PASS_OPEN_RPL status %u for STID %u\n", 77044fd1c1fSVinay Kumar Yadav rpl->status, stid); 77144fd1c1fSVinay Kumar Yadav return CPL_RET_BUF_DONE; 77244fd1c1fSVinay Kumar Yadav } 77344fd1c1fSVinay Kumar Yadav cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family); 77444fd1c1fSVinay Kumar Yadav sock_put(listen_ctx->lsk); 77544fd1c1fSVinay Kumar Yadav kfree(listen_ctx); 77644fd1c1fSVinay Kumar Yadav module_put(THIS_MODULE); 77744fd1c1fSVinay Kumar Yadav 77844fd1c1fSVinay Kumar Yadav return 0; 77944fd1c1fSVinay Kumar Yadav } 78044fd1c1fSVinay Kumar Yadav 78144fd1c1fSVinay Kumar Yadav static int chtls_close_listsrv_rpl(struct chtls_dev *cdev, struct sk_buff *skb) 78244fd1c1fSVinay Kumar Yadav { 78344fd1c1fSVinay Kumar Yadav struct cpl_close_listsvr_rpl *rpl = cplhdr(skb) + RSS_HDR; 78444fd1c1fSVinay Kumar Yadav struct listen_ctx *listen_ctx; 78544fd1c1fSVinay Kumar Yadav unsigned int stid; 78644fd1c1fSVinay Kumar Yadav void *data; 78744fd1c1fSVinay Kumar Yadav 78844fd1c1fSVinay Kumar Yadav stid = GET_TID(rpl); 78944fd1c1fSVinay Kumar Yadav data = lookup_stid(cdev->tids, stid); 79044fd1c1fSVinay Kumar Yadav listen_ctx = (struct listen_ctx *)data; 79144fd1c1fSVinay Kumar Yadav 79244fd1c1fSVinay Kumar Yadav if (rpl->status != CPL_ERR_NONE) { 79344fd1c1fSVinay Kumar Yadav pr_info("Unexpected CLOSE_LISTSRV_RPL status %u for STID %u\n", 79444fd1c1fSVinay Kumar Yadav rpl->status, stid); 79544fd1c1fSVinay Kumar Yadav return CPL_RET_BUF_DONE; 79644fd1c1fSVinay Kumar Yadav } 79744fd1c1fSVinay Kumar Yadav 79844fd1c1fSVinay Kumar Yadav cxgb4_free_stid(cdev->tids, stid, listen_ctx->lsk->sk_family); 79944fd1c1fSVinay Kumar Yadav sock_put(listen_ctx->lsk); 80044fd1c1fSVinay Kumar Yadav kfree(listen_ctx); 80144fd1c1fSVinay Kumar Yadav module_put(THIS_MODULE); 80244fd1c1fSVinay Kumar Yadav 80344fd1c1fSVinay Kumar Yadav return 0; 80444fd1c1fSVinay Kumar Yadav } 80544fd1c1fSVinay Kumar Yadav 80644fd1c1fSVinay Kumar Yadav static void chtls_purge_wr_queue(struct sock *sk) 80744fd1c1fSVinay Kumar Yadav { 80844fd1c1fSVinay Kumar Yadav struct sk_buff *skb; 80944fd1c1fSVinay Kumar Yadav 81044fd1c1fSVinay Kumar Yadav while ((skb = dequeue_wr(sk)) != NULL) 81144fd1c1fSVinay Kumar Yadav kfree_skb(skb); 81244fd1c1fSVinay Kumar Yadav } 81344fd1c1fSVinay Kumar Yadav 81444fd1c1fSVinay Kumar Yadav static void chtls_release_resources(struct sock *sk) 81544fd1c1fSVinay Kumar Yadav { 81644fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); 81744fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev = csk->cdev; 81844fd1c1fSVinay Kumar Yadav unsigned int tid = csk->tid; 81944fd1c1fSVinay Kumar Yadav struct tid_info *tids; 82044fd1c1fSVinay Kumar Yadav 82144fd1c1fSVinay Kumar Yadav if (!cdev) 82244fd1c1fSVinay Kumar Yadav return; 82344fd1c1fSVinay Kumar Yadav 82444fd1c1fSVinay Kumar Yadav tids = cdev->tids; 82544fd1c1fSVinay Kumar Yadav kfree_skb(csk->txdata_skb_cache); 82644fd1c1fSVinay Kumar Yadav csk->txdata_skb_cache = NULL; 82744fd1c1fSVinay Kumar Yadav 82844fd1c1fSVinay Kumar Yadav if (csk->wr_credits != csk->wr_max_credits) { 82944fd1c1fSVinay Kumar Yadav chtls_purge_wr_queue(sk); 83044fd1c1fSVinay Kumar Yadav chtls_reset_wr_list(csk); 83144fd1c1fSVinay Kumar Yadav } 83244fd1c1fSVinay Kumar Yadav 83344fd1c1fSVinay Kumar Yadav if (csk->l2t_entry) { 83444fd1c1fSVinay Kumar Yadav cxgb4_l2t_release(csk->l2t_entry); 83544fd1c1fSVinay Kumar Yadav csk->l2t_entry = NULL; 83644fd1c1fSVinay Kumar Yadav } 83744fd1c1fSVinay Kumar Yadav 83844fd1c1fSVinay Kumar Yadav if (sk->sk_state != TCP_SYN_SENT) { 83944fd1c1fSVinay Kumar Yadav cxgb4_remove_tid(tids, csk->port_id, tid, sk->sk_family); 84044fd1c1fSVinay Kumar Yadav sock_put(sk); 84144fd1c1fSVinay Kumar Yadav } 84244fd1c1fSVinay Kumar Yadav } 84344fd1c1fSVinay Kumar Yadav 84444fd1c1fSVinay Kumar Yadav static void chtls_conn_done(struct sock *sk) 84544fd1c1fSVinay Kumar Yadav { 84644fd1c1fSVinay Kumar Yadav if (sock_flag(sk, SOCK_DEAD)) 84744fd1c1fSVinay Kumar Yadav chtls_purge_receive_queue(sk); 84844fd1c1fSVinay Kumar Yadav sk_wakeup_sleepers(sk, 0); 84944fd1c1fSVinay Kumar Yadav tcp_done(sk); 85044fd1c1fSVinay Kumar Yadav } 85144fd1c1fSVinay Kumar Yadav 85244fd1c1fSVinay Kumar Yadav static void do_abort_syn_rcv(struct sock *child, struct sock *parent) 85344fd1c1fSVinay Kumar Yadav { 85444fd1c1fSVinay Kumar Yadav /* 85544fd1c1fSVinay Kumar Yadav * If the server is still open we clean up the child connection, 85644fd1c1fSVinay Kumar Yadav * otherwise the server already did the clean up as it was purging 85744fd1c1fSVinay Kumar Yadav * its SYN queue and the skb was just sitting in its backlog. 85844fd1c1fSVinay Kumar Yadav */ 85944fd1c1fSVinay Kumar Yadav if (likely(parent->sk_state == TCP_LISTEN)) { 86044fd1c1fSVinay Kumar Yadav cleanup_syn_rcv_conn(child, parent); 86144fd1c1fSVinay Kumar Yadav /* Without the below call to sock_orphan, 86244fd1c1fSVinay Kumar Yadav * we leak the socket resource with syn_flood test 86344fd1c1fSVinay Kumar Yadav * as inet_csk_destroy_sock will not be called 86444fd1c1fSVinay Kumar Yadav * in tcp_done since SOCK_DEAD flag is not set. 86544fd1c1fSVinay Kumar Yadav * Kernel handles this differently where new socket is 86644fd1c1fSVinay Kumar Yadav * created only after 3 way handshake is done. 86744fd1c1fSVinay Kumar Yadav */ 86844fd1c1fSVinay Kumar Yadav sock_orphan(child); 86944fd1c1fSVinay Kumar Yadav percpu_counter_inc((child)->sk_prot->orphan_count); 87044fd1c1fSVinay Kumar Yadav chtls_release_resources(child); 87144fd1c1fSVinay Kumar Yadav chtls_conn_done(child); 87244fd1c1fSVinay Kumar Yadav } else { 87344fd1c1fSVinay Kumar Yadav if (csk_flag(child, CSK_RST_ABORTED)) { 87444fd1c1fSVinay Kumar Yadav chtls_release_resources(child); 87544fd1c1fSVinay Kumar Yadav chtls_conn_done(child); 87644fd1c1fSVinay Kumar Yadav } 87744fd1c1fSVinay Kumar Yadav } 87844fd1c1fSVinay Kumar Yadav } 87944fd1c1fSVinay Kumar Yadav 88044fd1c1fSVinay Kumar Yadav static void pass_open_abort(struct sock *child, struct sock *parent, 88144fd1c1fSVinay Kumar Yadav struct sk_buff *skb) 88244fd1c1fSVinay Kumar Yadav { 88344fd1c1fSVinay Kumar Yadav do_abort_syn_rcv(child, parent); 88444fd1c1fSVinay Kumar Yadav kfree_skb(skb); 88544fd1c1fSVinay Kumar Yadav } 88644fd1c1fSVinay Kumar Yadav 88744fd1c1fSVinay Kumar Yadav static void bl_pass_open_abort(struct sock *lsk, struct sk_buff *skb) 88844fd1c1fSVinay Kumar Yadav { 88944fd1c1fSVinay Kumar Yadav pass_open_abort(skb->sk, lsk, skb); 89044fd1c1fSVinay Kumar Yadav } 89144fd1c1fSVinay Kumar Yadav 89244fd1c1fSVinay Kumar Yadav static void chtls_pass_open_arp_failure(struct sock *sk, 89344fd1c1fSVinay Kumar Yadav struct sk_buff *skb) 89444fd1c1fSVinay Kumar Yadav { 89544fd1c1fSVinay Kumar Yadav const struct request_sock *oreq; 89644fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 89744fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev; 89844fd1c1fSVinay Kumar Yadav struct sock *parent; 89944fd1c1fSVinay Kumar Yadav void *data; 90044fd1c1fSVinay Kumar Yadav 90144fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 90244fd1c1fSVinay Kumar Yadav cdev = csk->cdev; 90344fd1c1fSVinay Kumar Yadav 90444fd1c1fSVinay Kumar Yadav /* 90544fd1c1fSVinay Kumar Yadav * If the connection is being aborted due to the parent listening 90644fd1c1fSVinay Kumar Yadav * socket going away there's nothing to do, the ABORT_REQ will close 90744fd1c1fSVinay Kumar Yadav * the connection. 90844fd1c1fSVinay Kumar Yadav */ 90944fd1c1fSVinay Kumar Yadav if (csk_flag(sk, CSK_ABORT_RPL_PENDING)) { 91044fd1c1fSVinay Kumar Yadav kfree_skb(skb); 91144fd1c1fSVinay Kumar Yadav return; 91244fd1c1fSVinay Kumar Yadav } 91344fd1c1fSVinay Kumar Yadav 91444fd1c1fSVinay Kumar Yadav oreq = csk->passive_reap_next; 91544fd1c1fSVinay Kumar Yadav data = lookup_stid(cdev->tids, oreq->ts_recent); 91644fd1c1fSVinay Kumar Yadav parent = ((struct listen_ctx *)data)->lsk; 91744fd1c1fSVinay Kumar Yadav 91844fd1c1fSVinay Kumar Yadav bh_lock_sock(parent); 91944fd1c1fSVinay Kumar Yadav if (!sock_owned_by_user(parent)) { 92044fd1c1fSVinay Kumar Yadav pass_open_abort(sk, parent, skb); 92144fd1c1fSVinay Kumar Yadav } else { 92244fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->backlog_rcv = bl_pass_open_abort; 92344fd1c1fSVinay Kumar Yadav __sk_add_backlog(parent, skb); 92444fd1c1fSVinay Kumar Yadav } 92544fd1c1fSVinay Kumar Yadav bh_unlock_sock(parent); 92644fd1c1fSVinay Kumar Yadav } 92744fd1c1fSVinay Kumar Yadav 92844fd1c1fSVinay Kumar Yadav static void chtls_accept_rpl_arp_failure(void *handle, 92944fd1c1fSVinay Kumar Yadav struct sk_buff *skb) 93044fd1c1fSVinay Kumar Yadav { 93144fd1c1fSVinay Kumar Yadav struct sock *sk = (struct sock *)handle; 93244fd1c1fSVinay Kumar Yadav 93344fd1c1fSVinay Kumar Yadav sock_hold(sk); 93444fd1c1fSVinay Kumar Yadav process_cpl_msg(chtls_pass_open_arp_failure, sk, skb); 93544fd1c1fSVinay Kumar Yadav sock_put(sk); 93644fd1c1fSVinay Kumar Yadav } 93744fd1c1fSVinay Kumar Yadav 93844fd1c1fSVinay Kumar Yadav static unsigned int chtls_select_mss(const struct chtls_sock *csk, 93944fd1c1fSVinay Kumar Yadav unsigned int pmtu, 94044fd1c1fSVinay Kumar Yadav struct cpl_pass_accept_req *req) 94144fd1c1fSVinay Kumar Yadav { 94244fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev; 94344fd1c1fSVinay Kumar Yadav struct dst_entry *dst; 94444fd1c1fSVinay Kumar Yadav unsigned int tcpoptsz; 94544fd1c1fSVinay Kumar Yadav unsigned int iphdrsz; 94644fd1c1fSVinay Kumar Yadav unsigned int mtu_idx; 94744fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 94844fd1c1fSVinay Kumar Yadav unsigned int mss; 94944fd1c1fSVinay Kumar Yadav struct sock *sk; 95044fd1c1fSVinay Kumar Yadav 95144fd1c1fSVinay Kumar Yadav mss = ntohs(req->tcpopt.mss); 95244fd1c1fSVinay Kumar Yadav sk = csk->sk; 95344fd1c1fSVinay Kumar Yadav dst = __sk_dst_get(sk); 95444fd1c1fSVinay Kumar Yadav cdev = csk->cdev; 95544fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 95644fd1c1fSVinay Kumar Yadav tcpoptsz = 0; 95744fd1c1fSVinay Kumar Yadav 95844fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 95944fd1c1fSVinay Kumar Yadav if (sk->sk_family == AF_INET6) 96044fd1c1fSVinay Kumar Yadav iphdrsz = sizeof(struct ipv6hdr) + sizeof(struct tcphdr); 96144fd1c1fSVinay Kumar Yadav else 96244fd1c1fSVinay Kumar Yadav #endif 96344fd1c1fSVinay Kumar Yadav iphdrsz = sizeof(struct iphdr) + sizeof(struct tcphdr); 96444fd1c1fSVinay Kumar Yadav if (req->tcpopt.tstamp) 96544fd1c1fSVinay Kumar Yadav tcpoptsz += round_up(TCPOLEN_TIMESTAMP, 4); 96644fd1c1fSVinay Kumar Yadav 96744fd1c1fSVinay Kumar Yadav tp->advmss = dst_metric_advmss(dst); 96844fd1c1fSVinay Kumar Yadav if (USER_MSS(tp) && tp->advmss > USER_MSS(tp)) 96944fd1c1fSVinay Kumar Yadav tp->advmss = USER_MSS(tp); 97044fd1c1fSVinay Kumar Yadav if (tp->advmss > pmtu - iphdrsz) 97144fd1c1fSVinay Kumar Yadav tp->advmss = pmtu - iphdrsz; 97244fd1c1fSVinay Kumar Yadav if (mss && tp->advmss > mss) 97344fd1c1fSVinay Kumar Yadav tp->advmss = mss; 97444fd1c1fSVinay Kumar Yadav 97544fd1c1fSVinay Kumar Yadav tp->advmss = cxgb4_best_aligned_mtu(cdev->lldi->mtus, 97644fd1c1fSVinay Kumar Yadav iphdrsz + tcpoptsz, 97744fd1c1fSVinay Kumar Yadav tp->advmss - tcpoptsz, 97844fd1c1fSVinay Kumar Yadav 8, &mtu_idx); 97944fd1c1fSVinay Kumar Yadav tp->advmss -= iphdrsz; 98044fd1c1fSVinay Kumar Yadav 98144fd1c1fSVinay Kumar Yadav inet_csk(sk)->icsk_pmtu_cookie = pmtu; 98244fd1c1fSVinay Kumar Yadav return mtu_idx; 98344fd1c1fSVinay Kumar Yadav } 98444fd1c1fSVinay Kumar Yadav 98544fd1c1fSVinay Kumar Yadav static unsigned int select_rcv_wscale(int space, int wscale_ok, int win_clamp) 98644fd1c1fSVinay Kumar Yadav { 98744fd1c1fSVinay Kumar Yadav int wscale = 0; 98844fd1c1fSVinay Kumar Yadav 98944fd1c1fSVinay Kumar Yadav if (space > MAX_RCV_WND) 99044fd1c1fSVinay Kumar Yadav space = MAX_RCV_WND; 99144fd1c1fSVinay Kumar Yadav if (win_clamp && win_clamp < space) 99244fd1c1fSVinay Kumar Yadav space = win_clamp; 99344fd1c1fSVinay Kumar Yadav 99444fd1c1fSVinay Kumar Yadav if (wscale_ok) { 99544fd1c1fSVinay Kumar Yadav while (wscale < 14 && (65535 << wscale) < space) 99644fd1c1fSVinay Kumar Yadav wscale++; 99744fd1c1fSVinay Kumar Yadav } 99844fd1c1fSVinay Kumar Yadav return wscale; 99944fd1c1fSVinay Kumar Yadav } 100044fd1c1fSVinay Kumar Yadav 100144fd1c1fSVinay Kumar Yadav static void chtls_pass_accept_rpl(struct sk_buff *skb, 100244fd1c1fSVinay Kumar Yadav struct cpl_pass_accept_req *req, 100344fd1c1fSVinay Kumar Yadav unsigned int tid) 100444fd1c1fSVinay Kumar Yadav 100544fd1c1fSVinay Kumar Yadav { 100644fd1c1fSVinay Kumar Yadav struct cpl_t5_pass_accept_rpl *rpl5; 100744fd1c1fSVinay Kumar Yadav struct cxgb4_lld_info *lldi; 100844fd1c1fSVinay Kumar Yadav const struct tcphdr *tcph; 100944fd1c1fSVinay Kumar Yadav const struct tcp_sock *tp; 101044fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 101144fd1c1fSVinay Kumar Yadav unsigned int len; 101244fd1c1fSVinay Kumar Yadav struct sock *sk; 101344fd1c1fSVinay Kumar Yadav u32 opt2, hlen; 101444fd1c1fSVinay Kumar Yadav u64 opt0; 101544fd1c1fSVinay Kumar Yadav 101644fd1c1fSVinay Kumar Yadav sk = skb->sk; 101744fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 101844fd1c1fSVinay Kumar Yadav csk = sk->sk_user_data; 101944fd1c1fSVinay Kumar Yadav csk->tid = tid; 102044fd1c1fSVinay Kumar Yadav lldi = csk->cdev->lldi; 102144fd1c1fSVinay Kumar Yadav len = roundup(sizeof(*rpl5), 16); 102244fd1c1fSVinay Kumar Yadav 102344fd1c1fSVinay Kumar Yadav rpl5 = __skb_put_zero(skb, len); 102444fd1c1fSVinay Kumar Yadav INIT_TP_WR(rpl5, tid); 102544fd1c1fSVinay Kumar Yadav 102644fd1c1fSVinay Kumar Yadav OPCODE_TID(rpl5) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, 102744fd1c1fSVinay Kumar Yadav csk->tid)); 102844fd1c1fSVinay Kumar Yadav csk->mtu_idx = chtls_select_mss(csk, dst_mtu(__sk_dst_get(sk)), 102944fd1c1fSVinay Kumar Yadav req); 103044fd1c1fSVinay Kumar Yadav opt0 = TCAM_BYPASS_F | 103144fd1c1fSVinay Kumar Yadav WND_SCALE_V(RCV_WSCALE(tp)) | 103244fd1c1fSVinay Kumar Yadav MSS_IDX_V(csk->mtu_idx) | 103344fd1c1fSVinay Kumar Yadav L2T_IDX_V(csk->l2t_entry->idx) | 103444fd1c1fSVinay Kumar Yadav NAGLE_V(!(tp->nonagle & TCP_NAGLE_OFF)) | 103544fd1c1fSVinay Kumar Yadav TX_CHAN_V(csk->tx_chan) | 103644fd1c1fSVinay Kumar Yadav SMAC_SEL_V(csk->smac_idx) | 103744fd1c1fSVinay Kumar Yadav DSCP_V(csk->tos >> 2) | 103844fd1c1fSVinay Kumar Yadav ULP_MODE_V(ULP_MODE_TLS) | 103944fd1c1fSVinay Kumar Yadav RCV_BUFSIZ_V(min(tp->rcv_wnd >> 10, RCV_BUFSIZ_M)); 104044fd1c1fSVinay Kumar Yadav 104144fd1c1fSVinay Kumar Yadav opt2 = RX_CHANNEL_V(0) | 104244fd1c1fSVinay Kumar Yadav RSS_QUEUE_VALID_F | RSS_QUEUE_V(csk->rss_qid); 104344fd1c1fSVinay Kumar Yadav 104444fd1c1fSVinay Kumar Yadav if (!is_t5(lldi->adapter_type)) 104544fd1c1fSVinay Kumar Yadav opt2 |= RX_FC_DISABLE_F; 104644fd1c1fSVinay Kumar Yadav if (req->tcpopt.tstamp) 104744fd1c1fSVinay Kumar Yadav opt2 |= TSTAMPS_EN_F; 104844fd1c1fSVinay Kumar Yadav if (req->tcpopt.sack) 104944fd1c1fSVinay Kumar Yadav opt2 |= SACK_EN_F; 105044fd1c1fSVinay Kumar Yadav hlen = ntohl(req->hdr_len); 105144fd1c1fSVinay Kumar Yadav 105244fd1c1fSVinay Kumar Yadav tcph = (struct tcphdr *)((u8 *)(req + 1) + 105344fd1c1fSVinay Kumar Yadav T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen)); 105444fd1c1fSVinay Kumar Yadav if (tcph->ece && tcph->cwr) 105544fd1c1fSVinay Kumar Yadav opt2 |= CCTRL_ECN_V(1); 105644fd1c1fSVinay Kumar Yadav opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO); 105744fd1c1fSVinay Kumar Yadav opt2 |= T5_ISS_F; 105844fd1c1fSVinay Kumar Yadav opt2 |= T5_OPT_2_VALID_F; 105944fd1c1fSVinay Kumar Yadav opt2 |= WND_SCALE_EN_V(WSCALE_OK(tp)); 106044fd1c1fSVinay Kumar Yadav rpl5->opt0 = cpu_to_be64(opt0); 106144fd1c1fSVinay Kumar Yadav rpl5->opt2 = cpu_to_be32(opt2); 106244fd1c1fSVinay Kumar Yadav rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1); 106344fd1c1fSVinay Kumar Yadav set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id); 106444fd1c1fSVinay Kumar Yadav t4_set_arp_err_handler(skb, sk, chtls_accept_rpl_arp_failure); 106544fd1c1fSVinay Kumar Yadav cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry); 106644fd1c1fSVinay Kumar Yadav } 106744fd1c1fSVinay Kumar Yadav 106844fd1c1fSVinay Kumar Yadav static void inet_inherit_port(struct inet_hashinfo *hash_info, 106944fd1c1fSVinay Kumar Yadav struct sock *lsk, struct sock *newsk) 107044fd1c1fSVinay Kumar Yadav { 107144fd1c1fSVinay Kumar Yadav local_bh_disable(); 107244fd1c1fSVinay Kumar Yadav __inet_inherit_port(lsk, newsk); 107344fd1c1fSVinay Kumar Yadav local_bh_enable(); 107444fd1c1fSVinay Kumar Yadav } 107544fd1c1fSVinay Kumar Yadav 107644fd1c1fSVinay Kumar Yadav static int chtls_backlog_rcv(struct sock *sk, struct sk_buff *skb) 107744fd1c1fSVinay Kumar Yadav { 107844fd1c1fSVinay Kumar Yadav if (skb->protocol) { 107944fd1c1fSVinay Kumar Yadav kfree_skb(skb); 108044fd1c1fSVinay Kumar Yadav return 0; 108144fd1c1fSVinay Kumar Yadav } 108244fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->backlog_rcv(sk, skb); 108344fd1c1fSVinay Kumar Yadav return 0; 108444fd1c1fSVinay Kumar Yadav } 108544fd1c1fSVinay Kumar Yadav 108644fd1c1fSVinay Kumar Yadav static void chtls_set_tcp_window(struct chtls_sock *csk) 108744fd1c1fSVinay Kumar Yadav { 108844fd1c1fSVinay Kumar Yadav struct net_device *ndev = csk->egress_dev; 108944fd1c1fSVinay Kumar Yadav struct port_info *pi = netdev_priv(ndev); 109044fd1c1fSVinay Kumar Yadav unsigned int linkspeed; 109144fd1c1fSVinay Kumar Yadav u8 scale; 109244fd1c1fSVinay Kumar Yadav 109344fd1c1fSVinay Kumar Yadav linkspeed = pi->link_cfg.speed; 109444fd1c1fSVinay Kumar Yadav scale = linkspeed / SPEED_10000; 109544fd1c1fSVinay Kumar Yadav #define CHTLS_10G_RCVWIN (256 * 1024) 109644fd1c1fSVinay Kumar Yadav csk->rcv_win = CHTLS_10G_RCVWIN; 109744fd1c1fSVinay Kumar Yadav if (scale) 109844fd1c1fSVinay Kumar Yadav csk->rcv_win *= scale; 109944fd1c1fSVinay Kumar Yadav #define CHTLS_10G_SNDWIN (256 * 1024) 110044fd1c1fSVinay Kumar Yadav csk->snd_win = CHTLS_10G_SNDWIN; 110144fd1c1fSVinay Kumar Yadav if (scale) 110244fd1c1fSVinay Kumar Yadav csk->snd_win *= scale; 110344fd1c1fSVinay Kumar Yadav } 110444fd1c1fSVinay Kumar Yadav 110544fd1c1fSVinay Kumar Yadav static struct sock *chtls_recv_sock(struct sock *lsk, 110644fd1c1fSVinay Kumar Yadav struct request_sock *oreq, 110744fd1c1fSVinay Kumar Yadav void *network_hdr, 110844fd1c1fSVinay Kumar Yadav const struct cpl_pass_accept_req *req, 110944fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev) 111044fd1c1fSVinay Kumar Yadav { 111144fd1c1fSVinay Kumar Yadav struct neighbour *n = NULL; 111244fd1c1fSVinay Kumar Yadav struct inet_sock *newinet; 111344fd1c1fSVinay Kumar Yadav const struct iphdr *iph; 111444fd1c1fSVinay Kumar Yadav struct tls_context *ctx; 111544fd1c1fSVinay Kumar Yadav struct net_device *ndev; 111644fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 111744fd1c1fSVinay Kumar Yadav struct dst_entry *dst; 111844fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 111944fd1c1fSVinay Kumar Yadav struct sock *newsk; 112044fd1c1fSVinay Kumar Yadav u16 port_id; 112144fd1c1fSVinay Kumar Yadav int rxq_idx; 112244fd1c1fSVinay Kumar Yadav int step; 112344fd1c1fSVinay Kumar Yadav 112444fd1c1fSVinay Kumar Yadav iph = (const struct iphdr *)network_hdr; 112544fd1c1fSVinay Kumar Yadav newsk = tcp_create_openreq_child(lsk, oreq, cdev->askb); 112644fd1c1fSVinay Kumar Yadav if (!newsk) 112744fd1c1fSVinay Kumar Yadav goto free_oreq; 112844fd1c1fSVinay Kumar Yadav 112944fd1c1fSVinay Kumar Yadav if (lsk->sk_family == AF_INET) { 113044fd1c1fSVinay Kumar Yadav dst = inet_csk_route_child_sock(lsk, newsk, oreq); 113144fd1c1fSVinay Kumar Yadav if (!dst) 113244fd1c1fSVinay Kumar Yadav goto free_sk; 113344fd1c1fSVinay Kumar Yadav 113444fd1c1fSVinay Kumar Yadav n = dst_neigh_lookup(dst, &iph->saddr); 113544fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 113644fd1c1fSVinay Kumar Yadav } else { 113744fd1c1fSVinay Kumar Yadav const struct ipv6hdr *ip6h; 113844fd1c1fSVinay Kumar Yadav struct flowi6 fl6; 113944fd1c1fSVinay Kumar Yadav 114044fd1c1fSVinay Kumar Yadav ip6h = (const struct ipv6hdr *)network_hdr; 114144fd1c1fSVinay Kumar Yadav memset(&fl6, 0, sizeof(fl6)); 114244fd1c1fSVinay Kumar Yadav fl6.flowi6_proto = IPPROTO_TCP; 114344fd1c1fSVinay Kumar Yadav fl6.saddr = ip6h->daddr; 114444fd1c1fSVinay Kumar Yadav fl6.daddr = ip6h->saddr; 114544fd1c1fSVinay Kumar Yadav fl6.fl6_dport = inet_rsk(oreq)->ir_rmt_port; 114644fd1c1fSVinay Kumar Yadav fl6.fl6_sport = htons(inet_rsk(oreq)->ir_num); 114744fd1c1fSVinay Kumar Yadav security_req_classify_flow(oreq, flowi6_to_flowi(&fl6)); 114844fd1c1fSVinay Kumar Yadav dst = ip6_dst_lookup_flow(sock_net(lsk), lsk, &fl6, NULL); 114944fd1c1fSVinay Kumar Yadav if (IS_ERR(dst)) 115044fd1c1fSVinay Kumar Yadav goto free_sk; 115144fd1c1fSVinay Kumar Yadav n = dst_neigh_lookup(dst, &ip6h->saddr); 115244fd1c1fSVinay Kumar Yadav #endif 115344fd1c1fSVinay Kumar Yadav } 115444fd1c1fSVinay Kumar Yadav if (!n) 115544fd1c1fSVinay Kumar Yadav goto free_sk; 115644fd1c1fSVinay Kumar Yadav 115744fd1c1fSVinay Kumar Yadav ndev = n->dev; 115844fd1c1fSVinay Kumar Yadav if (!ndev) 115944fd1c1fSVinay Kumar Yadav goto free_dst; 116044fd1c1fSVinay Kumar Yadav port_id = cxgb4_port_idx(ndev); 116144fd1c1fSVinay Kumar Yadav 116244fd1c1fSVinay Kumar Yadav csk = chtls_sock_create(cdev); 116344fd1c1fSVinay Kumar Yadav if (!csk) 116444fd1c1fSVinay Kumar Yadav goto free_dst; 116544fd1c1fSVinay Kumar Yadav 116644fd1c1fSVinay Kumar Yadav csk->l2t_entry = cxgb4_l2t_get(cdev->lldi->l2t, n, ndev, 0); 116744fd1c1fSVinay Kumar Yadav if (!csk->l2t_entry) 116844fd1c1fSVinay Kumar Yadav goto free_csk; 116944fd1c1fSVinay Kumar Yadav 117044fd1c1fSVinay Kumar Yadav newsk->sk_user_data = csk; 117144fd1c1fSVinay Kumar Yadav newsk->sk_backlog_rcv = chtls_backlog_rcv; 117244fd1c1fSVinay Kumar Yadav 117344fd1c1fSVinay Kumar Yadav tp = tcp_sk(newsk); 117444fd1c1fSVinay Kumar Yadav newinet = inet_sk(newsk); 117544fd1c1fSVinay Kumar Yadav 117644fd1c1fSVinay Kumar Yadav if (iph->version == 0x4) { 117744fd1c1fSVinay Kumar Yadav newinet->inet_daddr = iph->saddr; 117844fd1c1fSVinay Kumar Yadav newinet->inet_rcv_saddr = iph->daddr; 117944fd1c1fSVinay Kumar Yadav newinet->inet_saddr = iph->daddr; 118044fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 118144fd1c1fSVinay Kumar Yadav } else { 118244fd1c1fSVinay Kumar Yadav struct tcp6_sock *newtcp6sk = (struct tcp6_sock *)newsk; 118344fd1c1fSVinay Kumar Yadav struct inet_request_sock *treq = inet_rsk(oreq); 118444fd1c1fSVinay Kumar Yadav struct ipv6_pinfo *newnp = inet6_sk(newsk); 118544fd1c1fSVinay Kumar Yadav struct ipv6_pinfo *np = inet6_sk(lsk); 118644fd1c1fSVinay Kumar Yadav 118744fd1c1fSVinay Kumar Yadav inet_sk(newsk)->pinet6 = &newtcp6sk->inet6; 118844fd1c1fSVinay Kumar Yadav memcpy(newnp, np, sizeof(struct ipv6_pinfo)); 118944fd1c1fSVinay Kumar Yadav newsk->sk_v6_daddr = treq->ir_v6_rmt_addr; 119044fd1c1fSVinay Kumar Yadav newsk->sk_v6_rcv_saddr = treq->ir_v6_loc_addr; 119144fd1c1fSVinay Kumar Yadav inet6_sk(newsk)->saddr = treq->ir_v6_loc_addr; 119244fd1c1fSVinay Kumar Yadav newnp->ipv6_fl_list = NULL; 119344fd1c1fSVinay Kumar Yadav newnp->pktoptions = NULL; 119444fd1c1fSVinay Kumar Yadav newsk->sk_bound_dev_if = treq->ir_iif; 119544fd1c1fSVinay Kumar Yadav newinet->inet_opt = NULL; 119644fd1c1fSVinay Kumar Yadav newinet->inet_daddr = LOOPBACK4_IPV6; 119744fd1c1fSVinay Kumar Yadav newinet->inet_saddr = LOOPBACK4_IPV6; 119844fd1c1fSVinay Kumar Yadav #endif 119944fd1c1fSVinay Kumar Yadav } 120044fd1c1fSVinay Kumar Yadav 120144fd1c1fSVinay Kumar Yadav oreq->ts_recent = PASS_OPEN_TID_G(ntohl(req->tos_stid)); 120244fd1c1fSVinay Kumar Yadav sk_setup_caps(newsk, dst); 120344fd1c1fSVinay Kumar Yadav ctx = tls_get_ctx(lsk); 120444fd1c1fSVinay Kumar Yadav newsk->sk_destruct = ctx->sk_destruct; 120544fd1c1fSVinay Kumar Yadav csk->sk = newsk; 120644fd1c1fSVinay Kumar Yadav csk->passive_reap_next = oreq; 120744fd1c1fSVinay Kumar Yadav csk->tx_chan = cxgb4_port_chan(ndev); 120844fd1c1fSVinay Kumar Yadav csk->port_id = port_id; 120944fd1c1fSVinay Kumar Yadav csk->egress_dev = ndev; 121044fd1c1fSVinay Kumar Yadav csk->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid)); 121144fd1c1fSVinay Kumar Yadav chtls_set_tcp_window(csk); 121244fd1c1fSVinay Kumar Yadav tp->rcv_wnd = csk->rcv_win; 121344fd1c1fSVinay Kumar Yadav csk->sndbuf = csk->snd_win; 121444fd1c1fSVinay Kumar Yadav csk->ulp_mode = ULP_MODE_TLS; 121544fd1c1fSVinay Kumar Yadav step = cdev->lldi->nrxq / cdev->lldi->nchan; 121644fd1c1fSVinay Kumar Yadav csk->rss_qid = cdev->lldi->rxq_ids[port_id * step]; 121744fd1c1fSVinay Kumar Yadav rxq_idx = port_id * step; 121844fd1c1fSVinay Kumar Yadav csk->txq_idx = (rxq_idx < cdev->lldi->ntxq) ? rxq_idx : 121944fd1c1fSVinay Kumar Yadav port_id * step; 122044fd1c1fSVinay Kumar Yadav csk->sndbuf = newsk->sk_sndbuf; 122144fd1c1fSVinay Kumar Yadav csk->smac_idx = ((struct port_info *)netdev_priv(ndev))->smt_idx; 122244fd1c1fSVinay Kumar Yadav RCV_WSCALE(tp) = select_rcv_wscale(tcp_full_space(newsk), 122344fd1c1fSVinay Kumar Yadav sock_net(newsk)-> 122444fd1c1fSVinay Kumar Yadav ipv4.sysctl_tcp_window_scaling, 122544fd1c1fSVinay Kumar Yadav tp->window_clamp); 122644fd1c1fSVinay Kumar Yadav neigh_release(n); 122744fd1c1fSVinay Kumar Yadav inet_inherit_port(&tcp_hashinfo, lsk, newsk); 122844fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_CONN_INLINE); 122944fd1c1fSVinay Kumar Yadav bh_unlock_sock(newsk); /* tcp_create_openreq_child ->sk_clone_lock */ 123044fd1c1fSVinay Kumar Yadav 123144fd1c1fSVinay Kumar Yadav return newsk; 123244fd1c1fSVinay Kumar Yadav free_csk: 123344fd1c1fSVinay Kumar Yadav chtls_sock_release(&csk->kref); 123444fd1c1fSVinay Kumar Yadav free_dst: 123544fd1c1fSVinay Kumar Yadav dst_release(dst); 123644fd1c1fSVinay Kumar Yadav free_sk: 123744fd1c1fSVinay Kumar Yadav inet_csk_prepare_forced_close(newsk); 123844fd1c1fSVinay Kumar Yadav tcp_done(newsk); 123944fd1c1fSVinay Kumar Yadav free_oreq: 124044fd1c1fSVinay Kumar Yadav chtls_reqsk_free(oreq); 124144fd1c1fSVinay Kumar Yadav return NULL; 124244fd1c1fSVinay Kumar Yadav } 124344fd1c1fSVinay Kumar Yadav 124444fd1c1fSVinay Kumar Yadav /* 124544fd1c1fSVinay Kumar Yadav * Populate a TID_RELEASE WR. The skb must be already propely sized. 124644fd1c1fSVinay Kumar Yadav */ 124744fd1c1fSVinay Kumar Yadav static void mk_tid_release(struct sk_buff *skb, 124844fd1c1fSVinay Kumar Yadav unsigned int chan, unsigned int tid) 124944fd1c1fSVinay Kumar Yadav { 125044fd1c1fSVinay Kumar Yadav struct cpl_tid_release *req; 125144fd1c1fSVinay Kumar Yadav unsigned int len; 125244fd1c1fSVinay Kumar Yadav 125344fd1c1fSVinay Kumar Yadav len = roundup(sizeof(struct cpl_tid_release), 16); 125444fd1c1fSVinay Kumar Yadav req = (struct cpl_tid_release *)__skb_put(skb, len); 125544fd1c1fSVinay Kumar Yadav memset(req, 0, len); 125644fd1c1fSVinay Kumar Yadav set_wr_txq(skb, CPL_PRIORITY_SETUP, chan); 125744fd1c1fSVinay Kumar Yadav INIT_TP_WR_CPL(req, CPL_TID_RELEASE, tid); 125844fd1c1fSVinay Kumar Yadav } 125944fd1c1fSVinay Kumar Yadav 126044fd1c1fSVinay Kumar Yadav static int chtls_get_module(struct sock *sk) 126144fd1c1fSVinay Kumar Yadav { 126244fd1c1fSVinay Kumar Yadav struct inet_connection_sock *icsk = inet_csk(sk); 126344fd1c1fSVinay Kumar Yadav 126444fd1c1fSVinay Kumar Yadav if (!try_module_get(icsk->icsk_ulp_ops->owner)) 126544fd1c1fSVinay Kumar Yadav return -1; 126644fd1c1fSVinay Kumar Yadav 126744fd1c1fSVinay Kumar Yadav return 0; 126844fd1c1fSVinay Kumar Yadav } 126944fd1c1fSVinay Kumar Yadav 127044fd1c1fSVinay Kumar Yadav static void chtls_pass_accept_request(struct sock *sk, 127144fd1c1fSVinay Kumar Yadav struct sk_buff *skb) 127244fd1c1fSVinay Kumar Yadav { 127344fd1c1fSVinay Kumar Yadav struct cpl_t5_pass_accept_rpl *rpl; 127444fd1c1fSVinay Kumar Yadav struct cpl_pass_accept_req *req; 127544fd1c1fSVinay Kumar Yadav struct listen_ctx *listen_ctx; 127644fd1c1fSVinay Kumar Yadav struct vlan_ethhdr *vlan_eh; 127744fd1c1fSVinay Kumar Yadav struct request_sock *oreq; 127844fd1c1fSVinay Kumar Yadav struct sk_buff *reply_skb; 127944fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 128044fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev; 128144fd1c1fSVinay Kumar Yadav struct ipv6hdr *ip6h; 128244fd1c1fSVinay Kumar Yadav struct tcphdr *tcph; 128344fd1c1fSVinay Kumar Yadav struct sock *newsk; 128444fd1c1fSVinay Kumar Yadav struct ethhdr *eh; 128544fd1c1fSVinay Kumar Yadav struct iphdr *iph; 128644fd1c1fSVinay Kumar Yadav void *network_hdr; 128744fd1c1fSVinay Kumar Yadav unsigned int stid; 128844fd1c1fSVinay Kumar Yadav unsigned int len; 128944fd1c1fSVinay Kumar Yadav unsigned int tid; 129044fd1c1fSVinay Kumar Yadav bool th_ecn, ect; 129144fd1c1fSVinay Kumar Yadav __u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */ 129244fd1c1fSVinay Kumar Yadav u16 eth_hdr_len; 129344fd1c1fSVinay Kumar Yadav bool ecn_ok; 129444fd1c1fSVinay Kumar Yadav 129544fd1c1fSVinay Kumar Yadav req = cplhdr(skb) + RSS_HDR; 129644fd1c1fSVinay Kumar Yadav tid = GET_TID(req); 129744fd1c1fSVinay Kumar Yadav cdev = BLOG_SKB_CB(skb)->cdev; 129844fd1c1fSVinay Kumar Yadav newsk = lookup_tid(cdev->tids, tid); 129944fd1c1fSVinay Kumar Yadav stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); 130044fd1c1fSVinay Kumar Yadav if (newsk) { 130144fd1c1fSVinay Kumar Yadav pr_info("tid (%d) already in use\n", tid); 130244fd1c1fSVinay Kumar Yadav return; 130344fd1c1fSVinay Kumar Yadav } 130444fd1c1fSVinay Kumar Yadav 130544fd1c1fSVinay Kumar Yadav len = roundup(sizeof(*rpl), 16); 130644fd1c1fSVinay Kumar Yadav reply_skb = alloc_skb(len, GFP_ATOMIC); 130744fd1c1fSVinay Kumar Yadav if (!reply_skb) { 130844fd1c1fSVinay Kumar Yadav cxgb4_remove_tid(cdev->tids, 0, tid, sk->sk_family); 130944fd1c1fSVinay Kumar Yadav kfree_skb(skb); 131044fd1c1fSVinay Kumar Yadav return; 131144fd1c1fSVinay Kumar Yadav } 131244fd1c1fSVinay Kumar Yadav 131344fd1c1fSVinay Kumar Yadav if (sk->sk_state != TCP_LISTEN) 131444fd1c1fSVinay Kumar Yadav goto reject; 131544fd1c1fSVinay Kumar Yadav 131644fd1c1fSVinay Kumar Yadav if (inet_csk_reqsk_queue_is_full(sk)) 131744fd1c1fSVinay Kumar Yadav goto reject; 131844fd1c1fSVinay Kumar Yadav 131944fd1c1fSVinay Kumar Yadav if (sk_acceptq_is_full(sk)) 132044fd1c1fSVinay Kumar Yadav goto reject; 132144fd1c1fSVinay Kumar Yadav 132244fd1c1fSVinay Kumar Yadav 132344fd1c1fSVinay Kumar Yadav eth_hdr_len = T6_ETH_HDR_LEN_G(ntohl(req->hdr_len)); 132444fd1c1fSVinay Kumar Yadav if (eth_hdr_len == ETH_HLEN) { 132544fd1c1fSVinay Kumar Yadav eh = (struct ethhdr *)(req + 1); 132644fd1c1fSVinay Kumar Yadav iph = (struct iphdr *)(eh + 1); 132744fd1c1fSVinay Kumar Yadav ip6h = (struct ipv6hdr *)(eh + 1); 132844fd1c1fSVinay Kumar Yadav network_hdr = (void *)(eh + 1); 132944fd1c1fSVinay Kumar Yadav } else { 133044fd1c1fSVinay Kumar Yadav vlan_eh = (struct vlan_ethhdr *)(req + 1); 133144fd1c1fSVinay Kumar Yadav iph = (struct iphdr *)(vlan_eh + 1); 133244fd1c1fSVinay Kumar Yadav ip6h = (struct ipv6hdr *)(vlan_eh + 1); 133344fd1c1fSVinay Kumar Yadav network_hdr = (void *)(vlan_eh + 1); 133444fd1c1fSVinay Kumar Yadav } 133544fd1c1fSVinay Kumar Yadav 133644fd1c1fSVinay Kumar Yadav if (iph->version == 0x4) { 133744fd1c1fSVinay Kumar Yadav tcph = (struct tcphdr *)(iph + 1); 133844fd1c1fSVinay Kumar Yadav skb_set_network_header(skb, (void *)iph - (void *)req); 133944fd1c1fSVinay Kumar Yadav oreq = inet_reqsk_alloc(&chtls_rsk_ops, sk, true); 134044fd1c1fSVinay Kumar Yadav } else { 134144fd1c1fSVinay Kumar Yadav tcph = (struct tcphdr *)(ip6h + 1); 134244fd1c1fSVinay Kumar Yadav skb_set_network_header(skb, (void *)ip6h - (void *)req); 134344fd1c1fSVinay Kumar Yadav oreq = inet_reqsk_alloc(&chtls_rsk_opsv6, sk, false); 134444fd1c1fSVinay Kumar Yadav } 134544fd1c1fSVinay Kumar Yadav 134644fd1c1fSVinay Kumar Yadav if (!oreq) 134744fd1c1fSVinay Kumar Yadav goto reject; 134844fd1c1fSVinay Kumar Yadav 134944fd1c1fSVinay Kumar Yadav oreq->rsk_rcv_wnd = 0; 135044fd1c1fSVinay Kumar Yadav oreq->rsk_window_clamp = 0; 135144fd1c1fSVinay Kumar Yadav oreq->syncookie = 0; 135244fd1c1fSVinay Kumar Yadav oreq->mss = 0; 135344fd1c1fSVinay Kumar Yadav oreq->ts_recent = 0; 135444fd1c1fSVinay Kumar Yadav 135544fd1c1fSVinay Kumar Yadav tcp_rsk(oreq)->tfo_listener = false; 135644fd1c1fSVinay Kumar Yadav tcp_rsk(oreq)->rcv_isn = ntohl(tcph->seq); 135744fd1c1fSVinay Kumar Yadav chtls_set_req_port(oreq, tcph->source, tcph->dest); 135844fd1c1fSVinay Kumar Yadav if (iph->version == 0x4) { 135944fd1c1fSVinay Kumar Yadav chtls_set_req_addr(oreq, iph->daddr, iph->saddr); 136044fd1c1fSVinay Kumar Yadav ip_dsfield = ipv4_get_dsfield(iph); 136144fd1c1fSVinay Kumar Yadav #if IS_ENABLED(CONFIG_IPV6) 136244fd1c1fSVinay Kumar Yadav } else { 136344fd1c1fSVinay Kumar Yadav inet_rsk(oreq)->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr; 136444fd1c1fSVinay Kumar Yadav inet_rsk(oreq)->ir_v6_loc_addr = ipv6_hdr(skb)->daddr; 136544fd1c1fSVinay Kumar Yadav ip_dsfield = ipv6_get_dsfield(ipv6_hdr(skb)); 136644fd1c1fSVinay Kumar Yadav #endif 136744fd1c1fSVinay Kumar Yadav } 136844fd1c1fSVinay Kumar Yadav if (req->tcpopt.wsf <= 14 && 136944fd1c1fSVinay Kumar Yadav sock_net(sk)->ipv4.sysctl_tcp_window_scaling) { 137044fd1c1fSVinay Kumar Yadav inet_rsk(oreq)->wscale_ok = 1; 137144fd1c1fSVinay Kumar Yadav inet_rsk(oreq)->snd_wscale = req->tcpopt.wsf; 137244fd1c1fSVinay Kumar Yadav } 137344fd1c1fSVinay Kumar Yadav inet_rsk(oreq)->ir_iif = sk->sk_bound_dev_if; 137444fd1c1fSVinay Kumar Yadav th_ecn = tcph->ece && tcph->cwr; 137544fd1c1fSVinay Kumar Yadav if (th_ecn) { 137644fd1c1fSVinay Kumar Yadav ect = !INET_ECN_is_not_ect(ip_dsfield); 137744fd1c1fSVinay Kumar Yadav ecn_ok = sock_net(sk)->ipv4.sysctl_tcp_ecn; 137844fd1c1fSVinay Kumar Yadav if ((!ect && ecn_ok) || tcp_ca_needs_ecn(sk)) 137944fd1c1fSVinay Kumar Yadav inet_rsk(oreq)->ecn_ok = 1; 138044fd1c1fSVinay Kumar Yadav } 138144fd1c1fSVinay Kumar Yadav 138244fd1c1fSVinay Kumar Yadav newsk = chtls_recv_sock(sk, oreq, network_hdr, req, cdev); 138344fd1c1fSVinay Kumar Yadav if (!newsk) 138444fd1c1fSVinay Kumar Yadav goto free_oreq; 138544fd1c1fSVinay Kumar Yadav 138644fd1c1fSVinay Kumar Yadav if (chtls_get_module(newsk)) 138744fd1c1fSVinay Kumar Yadav goto reject; 138844fd1c1fSVinay Kumar Yadav inet_csk_reqsk_queue_added(sk); 138944fd1c1fSVinay Kumar Yadav reply_skb->sk = newsk; 139044fd1c1fSVinay Kumar Yadav chtls_install_cpl_ops(newsk); 139144fd1c1fSVinay Kumar Yadav cxgb4_insert_tid(cdev->tids, newsk, tid, newsk->sk_family); 139244fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(newsk); 139344fd1c1fSVinay Kumar Yadav listen_ctx = (struct listen_ctx *)lookup_stid(cdev->tids, stid); 139444fd1c1fSVinay Kumar Yadav csk->listen_ctx = listen_ctx; 139544fd1c1fSVinay Kumar Yadav __skb_queue_tail(&listen_ctx->synq, (struct sk_buff *)&csk->synq); 139644fd1c1fSVinay Kumar Yadav chtls_pass_accept_rpl(reply_skb, req, tid); 139744fd1c1fSVinay Kumar Yadav kfree_skb(skb); 139844fd1c1fSVinay Kumar Yadav return; 139944fd1c1fSVinay Kumar Yadav 140044fd1c1fSVinay Kumar Yadav free_oreq: 140144fd1c1fSVinay Kumar Yadav chtls_reqsk_free(oreq); 140244fd1c1fSVinay Kumar Yadav reject: 140344fd1c1fSVinay Kumar Yadav mk_tid_release(reply_skb, 0, tid); 140444fd1c1fSVinay Kumar Yadav cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb); 140544fd1c1fSVinay Kumar Yadav kfree_skb(skb); 140644fd1c1fSVinay Kumar Yadav } 140744fd1c1fSVinay Kumar Yadav 140844fd1c1fSVinay Kumar Yadav /* 140944fd1c1fSVinay Kumar Yadav * Handle a CPL_PASS_ACCEPT_REQ message. 141044fd1c1fSVinay Kumar Yadav */ 141144fd1c1fSVinay Kumar Yadav static int chtls_pass_accept_req(struct chtls_dev *cdev, struct sk_buff *skb) 141244fd1c1fSVinay Kumar Yadav { 141344fd1c1fSVinay Kumar Yadav struct cpl_pass_accept_req *req = cplhdr(skb) + RSS_HDR; 141444fd1c1fSVinay Kumar Yadav struct listen_ctx *ctx; 141544fd1c1fSVinay Kumar Yadav unsigned int stid; 141644fd1c1fSVinay Kumar Yadav unsigned int tid; 141744fd1c1fSVinay Kumar Yadav struct sock *lsk; 141844fd1c1fSVinay Kumar Yadav void *data; 141944fd1c1fSVinay Kumar Yadav 142044fd1c1fSVinay Kumar Yadav stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); 142144fd1c1fSVinay Kumar Yadav tid = GET_TID(req); 142244fd1c1fSVinay Kumar Yadav 142344fd1c1fSVinay Kumar Yadav data = lookup_stid(cdev->tids, stid); 142444fd1c1fSVinay Kumar Yadav if (!data) 142544fd1c1fSVinay Kumar Yadav return 1; 142644fd1c1fSVinay Kumar Yadav 142744fd1c1fSVinay Kumar Yadav ctx = (struct listen_ctx *)data; 142844fd1c1fSVinay Kumar Yadav lsk = ctx->lsk; 142944fd1c1fSVinay Kumar Yadav 143044fd1c1fSVinay Kumar Yadav if (unlikely(tid_out_of_range(cdev->tids, tid))) { 143144fd1c1fSVinay Kumar Yadav pr_info("passive open TID %u too large\n", tid); 143244fd1c1fSVinay Kumar Yadav return 1; 143344fd1c1fSVinay Kumar Yadav } 143444fd1c1fSVinay Kumar Yadav 143544fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->cdev = cdev; 143644fd1c1fSVinay Kumar Yadav process_cpl_msg(chtls_pass_accept_request, lsk, skb); 143744fd1c1fSVinay Kumar Yadav return 0; 143844fd1c1fSVinay Kumar Yadav } 143944fd1c1fSVinay Kumar Yadav 144044fd1c1fSVinay Kumar Yadav /* 144144fd1c1fSVinay Kumar Yadav * Completes some final bits of initialization for just established connections 144244fd1c1fSVinay Kumar Yadav * and changes their state to TCP_ESTABLISHED. 144344fd1c1fSVinay Kumar Yadav * 144444fd1c1fSVinay Kumar Yadav * snd_isn here is the ISN after the SYN, i.e., the true ISN + 1. 144544fd1c1fSVinay Kumar Yadav */ 144644fd1c1fSVinay Kumar Yadav static void make_established(struct sock *sk, u32 snd_isn, unsigned int opt) 144744fd1c1fSVinay Kumar Yadav { 144844fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 144944fd1c1fSVinay Kumar Yadav 145044fd1c1fSVinay Kumar Yadav tp->pushed_seq = snd_isn; 145144fd1c1fSVinay Kumar Yadav tp->write_seq = snd_isn; 145244fd1c1fSVinay Kumar Yadav tp->snd_nxt = snd_isn; 145344fd1c1fSVinay Kumar Yadav tp->snd_una = snd_isn; 145444fd1c1fSVinay Kumar Yadav inet_sk(sk)->inet_id = prandom_u32(); 145544fd1c1fSVinay Kumar Yadav assign_rxopt(sk, opt); 145644fd1c1fSVinay Kumar Yadav 145744fd1c1fSVinay Kumar Yadav if (tp->rcv_wnd > (RCV_BUFSIZ_M << 10)) 145844fd1c1fSVinay Kumar Yadav tp->rcv_wup -= tp->rcv_wnd - (RCV_BUFSIZ_M << 10); 145944fd1c1fSVinay Kumar Yadav 146044fd1c1fSVinay Kumar Yadav smp_mb(); 146144fd1c1fSVinay Kumar Yadav tcp_set_state(sk, TCP_ESTABLISHED); 146244fd1c1fSVinay Kumar Yadav } 146344fd1c1fSVinay Kumar Yadav 146444fd1c1fSVinay Kumar Yadav static void chtls_abort_conn(struct sock *sk, struct sk_buff *skb) 146544fd1c1fSVinay Kumar Yadav { 146644fd1c1fSVinay Kumar Yadav struct sk_buff *abort_skb; 146744fd1c1fSVinay Kumar Yadav 146844fd1c1fSVinay Kumar Yadav abort_skb = alloc_skb(sizeof(struct cpl_abort_req), GFP_ATOMIC); 146944fd1c1fSVinay Kumar Yadav if (abort_skb) 147044fd1c1fSVinay Kumar Yadav chtls_send_reset(sk, CPL_ABORT_SEND_RST, abort_skb); 147144fd1c1fSVinay Kumar Yadav } 147244fd1c1fSVinay Kumar Yadav 147344fd1c1fSVinay Kumar Yadav static struct sock *reap_list; 147444fd1c1fSVinay Kumar Yadav static DEFINE_SPINLOCK(reap_list_lock); 147544fd1c1fSVinay Kumar Yadav 147644fd1c1fSVinay Kumar Yadav /* 147744fd1c1fSVinay Kumar Yadav * Process the reap list. 147844fd1c1fSVinay Kumar Yadav */ 147944fd1c1fSVinay Kumar Yadav DECLARE_TASK_FUNC(process_reap_list, task_param) 148044fd1c1fSVinay Kumar Yadav { 148144fd1c1fSVinay Kumar Yadav spin_lock_bh(&reap_list_lock); 148244fd1c1fSVinay Kumar Yadav while (reap_list) { 148344fd1c1fSVinay Kumar Yadav struct sock *sk = reap_list; 148444fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); 148544fd1c1fSVinay Kumar Yadav 148644fd1c1fSVinay Kumar Yadav reap_list = csk->passive_reap_next; 148744fd1c1fSVinay Kumar Yadav csk->passive_reap_next = NULL; 148844fd1c1fSVinay Kumar Yadav spin_unlock(&reap_list_lock); 148944fd1c1fSVinay Kumar Yadav sock_hold(sk); 149044fd1c1fSVinay Kumar Yadav 149144fd1c1fSVinay Kumar Yadav bh_lock_sock(sk); 149244fd1c1fSVinay Kumar Yadav chtls_abort_conn(sk, NULL); 149344fd1c1fSVinay Kumar Yadav sock_orphan(sk); 149444fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_CLOSE) 149544fd1c1fSVinay Kumar Yadav inet_csk_destroy_sock(sk); 149644fd1c1fSVinay Kumar Yadav bh_unlock_sock(sk); 149744fd1c1fSVinay Kumar Yadav sock_put(sk); 149844fd1c1fSVinay Kumar Yadav spin_lock(&reap_list_lock); 149944fd1c1fSVinay Kumar Yadav } 150044fd1c1fSVinay Kumar Yadav spin_unlock_bh(&reap_list_lock); 150144fd1c1fSVinay Kumar Yadav } 150244fd1c1fSVinay Kumar Yadav 150344fd1c1fSVinay Kumar Yadav static DECLARE_WORK(reap_task, process_reap_list); 150444fd1c1fSVinay Kumar Yadav 150544fd1c1fSVinay Kumar Yadav static void add_to_reap_list(struct sock *sk) 150644fd1c1fSVinay Kumar Yadav { 150744fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = sk->sk_user_data; 150844fd1c1fSVinay Kumar Yadav 150944fd1c1fSVinay Kumar Yadav local_bh_disable(); 151044fd1c1fSVinay Kumar Yadav bh_lock_sock(sk); 151144fd1c1fSVinay Kumar Yadav release_tcp_port(sk); /* release the port immediately */ 151244fd1c1fSVinay Kumar Yadav 151344fd1c1fSVinay Kumar Yadav spin_lock(&reap_list_lock); 151444fd1c1fSVinay Kumar Yadav csk->passive_reap_next = reap_list; 151544fd1c1fSVinay Kumar Yadav reap_list = sk; 151644fd1c1fSVinay Kumar Yadav if (!csk->passive_reap_next) 151744fd1c1fSVinay Kumar Yadav schedule_work(&reap_task); 151844fd1c1fSVinay Kumar Yadav spin_unlock(&reap_list_lock); 151944fd1c1fSVinay Kumar Yadav bh_unlock_sock(sk); 152044fd1c1fSVinay Kumar Yadav local_bh_enable(); 152144fd1c1fSVinay Kumar Yadav } 152244fd1c1fSVinay Kumar Yadav 152344fd1c1fSVinay Kumar Yadav static void add_pass_open_to_parent(struct sock *child, struct sock *lsk, 152444fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev) 152544fd1c1fSVinay Kumar Yadav { 152644fd1c1fSVinay Kumar Yadav struct request_sock *oreq; 152744fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 152844fd1c1fSVinay Kumar Yadav 152944fd1c1fSVinay Kumar Yadav if (lsk->sk_state != TCP_LISTEN) 153044fd1c1fSVinay Kumar Yadav return; 153144fd1c1fSVinay Kumar Yadav 153244fd1c1fSVinay Kumar Yadav csk = child->sk_user_data; 153344fd1c1fSVinay Kumar Yadav oreq = csk->passive_reap_next; 153444fd1c1fSVinay Kumar Yadav csk->passive_reap_next = NULL; 153544fd1c1fSVinay Kumar Yadav 153644fd1c1fSVinay Kumar Yadav reqsk_queue_removed(&inet_csk(lsk)->icsk_accept_queue, oreq); 153744fd1c1fSVinay Kumar Yadav __skb_unlink((struct sk_buff *)&csk->synq, &csk->listen_ctx->synq); 153844fd1c1fSVinay Kumar Yadav 153944fd1c1fSVinay Kumar Yadav if (sk_acceptq_is_full(lsk)) { 154044fd1c1fSVinay Kumar Yadav chtls_reqsk_free(oreq); 154144fd1c1fSVinay Kumar Yadav add_to_reap_list(child); 154244fd1c1fSVinay Kumar Yadav } else { 154344fd1c1fSVinay Kumar Yadav refcount_set(&oreq->rsk_refcnt, 1); 154444fd1c1fSVinay Kumar Yadav inet_csk_reqsk_queue_add(lsk, oreq, child); 154544fd1c1fSVinay Kumar Yadav lsk->sk_data_ready(lsk); 154644fd1c1fSVinay Kumar Yadav } 154744fd1c1fSVinay Kumar Yadav } 154844fd1c1fSVinay Kumar Yadav 154944fd1c1fSVinay Kumar Yadav static void bl_add_pass_open_to_parent(struct sock *lsk, struct sk_buff *skb) 155044fd1c1fSVinay Kumar Yadav { 155144fd1c1fSVinay Kumar Yadav struct sock *child = skb->sk; 155244fd1c1fSVinay Kumar Yadav 155344fd1c1fSVinay Kumar Yadav skb->sk = NULL; 155444fd1c1fSVinay Kumar Yadav add_pass_open_to_parent(child, lsk, BLOG_SKB_CB(skb)->cdev); 155544fd1c1fSVinay Kumar Yadav kfree_skb(skb); 155644fd1c1fSVinay Kumar Yadav } 155744fd1c1fSVinay Kumar Yadav 155844fd1c1fSVinay Kumar Yadav static int chtls_pass_establish(struct chtls_dev *cdev, struct sk_buff *skb) 155944fd1c1fSVinay Kumar Yadav { 156044fd1c1fSVinay Kumar Yadav struct cpl_pass_establish *req = cplhdr(skb) + RSS_HDR; 156144fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 156244fd1c1fSVinay Kumar Yadav struct sock *lsk, *sk; 156344fd1c1fSVinay Kumar Yadav unsigned int hwtid; 156444fd1c1fSVinay Kumar Yadav 156544fd1c1fSVinay Kumar Yadav hwtid = GET_TID(req); 156644fd1c1fSVinay Kumar Yadav sk = lookup_tid(cdev->tids, hwtid); 156744fd1c1fSVinay Kumar Yadav if (!sk) 156844fd1c1fSVinay Kumar Yadav return (CPL_RET_UNKNOWN_TID | CPL_RET_BUF_DONE); 156944fd1c1fSVinay Kumar Yadav 157044fd1c1fSVinay Kumar Yadav bh_lock_sock(sk); 157144fd1c1fSVinay Kumar Yadav if (unlikely(sock_owned_by_user(sk))) { 157244fd1c1fSVinay Kumar Yadav kfree_skb(skb); 157344fd1c1fSVinay Kumar Yadav } else { 157444fd1c1fSVinay Kumar Yadav unsigned int stid; 157544fd1c1fSVinay Kumar Yadav void *data; 157644fd1c1fSVinay Kumar Yadav 157744fd1c1fSVinay Kumar Yadav csk = sk->sk_user_data; 157844fd1c1fSVinay Kumar Yadav csk->wr_max_credits = 64; 157944fd1c1fSVinay Kumar Yadav csk->wr_credits = 64; 158044fd1c1fSVinay Kumar Yadav csk->wr_unacked = 0; 158144fd1c1fSVinay Kumar Yadav make_established(sk, ntohl(req->snd_isn), ntohs(req->tcp_opt)); 158244fd1c1fSVinay Kumar Yadav stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); 158344fd1c1fSVinay Kumar Yadav sk->sk_state_change(sk); 158444fd1c1fSVinay Kumar Yadav if (unlikely(sk->sk_socket)) 158544fd1c1fSVinay Kumar Yadav sk_wake_async(sk, 0, POLL_OUT); 158644fd1c1fSVinay Kumar Yadav 158744fd1c1fSVinay Kumar Yadav data = lookup_stid(cdev->tids, stid); 158844fd1c1fSVinay Kumar Yadav lsk = ((struct listen_ctx *)data)->lsk; 158944fd1c1fSVinay Kumar Yadav 159044fd1c1fSVinay Kumar Yadav bh_lock_sock(lsk); 159144fd1c1fSVinay Kumar Yadav if (unlikely(skb_queue_empty(&csk->listen_ctx->synq))) { 159244fd1c1fSVinay Kumar Yadav /* removed from synq */ 159344fd1c1fSVinay Kumar Yadav bh_unlock_sock(lsk); 159444fd1c1fSVinay Kumar Yadav kfree_skb(skb); 159544fd1c1fSVinay Kumar Yadav goto unlock; 159644fd1c1fSVinay Kumar Yadav } 159744fd1c1fSVinay Kumar Yadav 159844fd1c1fSVinay Kumar Yadav if (likely(!sock_owned_by_user(lsk))) { 159944fd1c1fSVinay Kumar Yadav kfree_skb(skb); 160044fd1c1fSVinay Kumar Yadav add_pass_open_to_parent(sk, lsk, cdev); 160144fd1c1fSVinay Kumar Yadav } else { 160244fd1c1fSVinay Kumar Yadav skb->sk = sk; 160344fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->cdev = cdev; 160444fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->backlog_rcv = 160544fd1c1fSVinay Kumar Yadav bl_add_pass_open_to_parent; 160644fd1c1fSVinay Kumar Yadav __sk_add_backlog(lsk, skb); 160744fd1c1fSVinay Kumar Yadav } 160844fd1c1fSVinay Kumar Yadav bh_unlock_sock(lsk); 160944fd1c1fSVinay Kumar Yadav } 161044fd1c1fSVinay Kumar Yadav unlock: 161144fd1c1fSVinay Kumar Yadav bh_unlock_sock(sk); 161244fd1c1fSVinay Kumar Yadav return 0; 161344fd1c1fSVinay Kumar Yadav } 161444fd1c1fSVinay Kumar Yadav 161544fd1c1fSVinay Kumar Yadav /* 161644fd1c1fSVinay Kumar Yadav * Handle receipt of an urgent pointer. 161744fd1c1fSVinay Kumar Yadav */ 161844fd1c1fSVinay Kumar Yadav static void handle_urg_ptr(struct sock *sk, u32 urg_seq) 161944fd1c1fSVinay Kumar Yadav { 162044fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 162144fd1c1fSVinay Kumar Yadav 162244fd1c1fSVinay Kumar Yadav urg_seq--; 162344fd1c1fSVinay Kumar Yadav if (tp->urg_data && !after(urg_seq, tp->urg_seq)) 162444fd1c1fSVinay Kumar Yadav return; /* duplicate pointer */ 162544fd1c1fSVinay Kumar Yadav 162644fd1c1fSVinay Kumar Yadav sk_send_sigurg(sk); 162744fd1c1fSVinay Kumar Yadav if (tp->urg_seq == tp->copied_seq && tp->urg_data && 162844fd1c1fSVinay Kumar Yadav !sock_flag(sk, SOCK_URGINLINE) && 162944fd1c1fSVinay Kumar Yadav tp->copied_seq != tp->rcv_nxt) { 163044fd1c1fSVinay Kumar Yadav struct sk_buff *skb = skb_peek(&sk->sk_receive_queue); 163144fd1c1fSVinay Kumar Yadav 163244fd1c1fSVinay Kumar Yadav tp->copied_seq++; 163344fd1c1fSVinay Kumar Yadav if (skb && tp->copied_seq - ULP_SKB_CB(skb)->seq >= skb->len) 163444fd1c1fSVinay Kumar Yadav chtls_free_skb(sk, skb); 163544fd1c1fSVinay Kumar Yadav } 163644fd1c1fSVinay Kumar Yadav 163744fd1c1fSVinay Kumar Yadav tp->urg_data = TCP_URG_NOTYET; 163844fd1c1fSVinay Kumar Yadav tp->urg_seq = urg_seq; 163944fd1c1fSVinay Kumar Yadav } 164044fd1c1fSVinay Kumar Yadav 164144fd1c1fSVinay Kumar Yadav static void check_sk_callbacks(struct chtls_sock *csk) 164244fd1c1fSVinay Kumar Yadav { 164344fd1c1fSVinay Kumar Yadav struct sock *sk = csk->sk; 164444fd1c1fSVinay Kumar Yadav 164544fd1c1fSVinay Kumar Yadav if (unlikely(sk->sk_user_data && 164644fd1c1fSVinay Kumar Yadav !csk_flag_nochk(csk, CSK_CALLBACKS_CHKD))) 164744fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_CALLBACKS_CHKD); 164844fd1c1fSVinay Kumar Yadav } 164944fd1c1fSVinay Kumar Yadav 165044fd1c1fSVinay Kumar Yadav /* 165144fd1c1fSVinay Kumar Yadav * Handles Rx data that arrives in a state where the socket isn't accepting 165244fd1c1fSVinay Kumar Yadav * new data. 165344fd1c1fSVinay Kumar Yadav */ 165444fd1c1fSVinay Kumar Yadav static void handle_excess_rx(struct sock *sk, struct sk_buff *skb) 165544fd1c1fSVinay Kumar Yadav { 165644fd1c1fSVinay Kumar Yadav if (!csk_flag(sk, CSK_ABORT_SHUTDOWN)) 165744fd1c1fSVinay Kumar Yadav chtls_abort_conn(sk, skb); 165844fd1c1fSVinay Kumar Yadav 165944fd1c1fSVinay Kumar Yadav kfree_skb(skb); 166044fd1c1fSVinay Kumar Yadav } 166144fd1c1fSVinay Kumar Yadav 166244fd1c1fSVinay Kumar Yadav static void chtls_recv_data(struct sock *sk, struct sk_buff *skb) 166344fd1c1fSVinay Kumar Yadav { 166444fd1c1fSVinay Kumar Yadav struct cpl_rx_data *hdr = cplhdr(skb) + RSS_HDR; 166544fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 166644fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 166744fd1c1fSVinay Kumar Yadav 166844fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 166944fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 167044fd1c1fSVinay Kumar Yadav 167144fd1c1fSVinay Kumar Yadav if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) { 167244fd1c1fSVinay Kumar Yadav handle_excess_rx(sk, skb); 167344fd1c1fSVinay Kumar Yadav return; 167444fd1c1fSVinay Kumar Yadav } 167544fd1c1fSVinay Kumar Yadav 167644fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->seq = ntohl(hdr->seq); 167744fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->psh = hdr->psh; 167844fd1c1fSVinay Kumar Yadav skb_ulp_mode(skb) = ULP_MODE_NONE; 167944fd1c1fSVinay Kumar Yadav 168044fd1c1fSVinay Kumar Yadav skb_reset_transport_header(skb); 168144fd1c1fSVinay Kumar Yadav __skb_pull(skb, sizeof(*hdr) + RSS_HDR); 168244fd1c1fSVinay Kumar Yadav if (!skb->data_len) 168344fd1c1fSVinay Kumar Yadav __skb_trim(skb, ntohs(hdr->len)); 168444fd1c1fSVinay Kumar Yadav 168544fd1c1fSVinay Kumar Yadav if (unlikely(hdr->urg)) 168644fd1c1fSVinay Kumar Yadav handle_urg_ptr(sk, tp->rcv_nxt + ntohs(hdr->urg)); 168744fd1c1fSVinay Kumar Yadav if (unlikely(tp->urg_data == TCP_URG_NOTYET && 168844fd1c1fSVinay Kumar Yadav tp->urg_seq - tp->rcv_nxt < skb->len)) 168944fd1c1fSVinay Kumar Yadav tp->urg_data = TCP_URG_VALID | 169044fd1c1fSVinay Kumar Yadav skb->data[tp->urg_seq - tp->rcv_nxt]; 169144fd1c1fSVinay Kumar Yadav 169244fd1c1fSVinay Kumar Yadav if (unlikely(hdr->dack_mode != csk->delack_mode)) { 169344fd1c1fSVinay Kumar Yadav csk->delack_mode = hdr->dack_mode; 169444fd1c1fSVinay Kumar Yadav csk->delack_seq = tp->rcv_nxt; 169544fd1c1fSVinay Kumar Yadav } 169644fd1c1fSVinay Kumar Yadav 169744fd1c1fSVinay Kumar Yadav tcp_hdr(skb)->fin = 0; 169844fd1c1fSVinay Kumar Yadav tp->rcv_nxt += skb->len; 169944fd1c1fSVinay Kumar Yadav 170044fd1c1fSVinay Kumar Yadav __skb_queue_tail(&sk->sk_receive_queue, skb); 170144fd1c1fSVinay Kumar Yadav 170244fd1c1fSVinay Kumar Yadav if (!sock_flag(sk, SOCK_DEAD)) { 170344fd1c1fSVinay Kumar Yadav check_sk_callbacks(csk); 170444fd1c1fSVinay Kumar Yadav sk->sk_data_ready(sk); 170544fd1c1fSVinay Kumar Yadav } 170644fd1c1fSVinay Kumar Yadav } 170744fd1c1fSVinay Kumar Yadav 170844fd1c1fSVinay Kumar Yadav static int chtls_rx_data(struct chtls_dev *cdev, struct sk_buff *skb) 170944fd1c1fSVinay Kumar Yadav { 171044fd1c1fSVinay Kumar Yadav struct cpl_rx_data *req = cplhdr(skb) + RSS_HDR; 171144fd1c1fSVinay Kumar Yadav unsigned int hwtid = GET_TID(req); 171244fd1c1fSVinay Kumar Yadav struct sock *sk; 171344fd1c1fSVinay Kumar Yadav 171444fd1c1fSVinay Kumar Yadav sk = lookup_tid(cdev->tids, hwtid); 171544fd1c1fSVinay Kumar Yadav if (unlikely(!sk)) { 171644fd1c1fSVinay Kumar Yadav pr_err("can't find conn. for hwtid %u.\n", hwtid); 171744fd1c1fSVinay Kumar Yadav return -EINVAL; 171844fd1c1fSVinay Kumar Yadav } 171944fd1c1fSVinay Kumar Yadav skb_dst_set(skb, NULL); 172044fd1c1fSVinay Kumar Yadav process_cpl_msg(chtls_recv_data, sk, skb); 172144fd1c1fSVinay Kumar Yadav return 0; 172244fd1c1fSVinay Kumar Yadav } 172344fd1c1fSVinay Kumar Yadav 172444fd1c1fSVinay Kumar Yadav static void chtls_recv_pdu(struct sock *sk, struct sk_buff *skb) 172544fd1c1fSVinay Kumar Yadav { 172644fd1c1fSVinay Kumar Yadav struct cpl_tls_data *hdr = cplhdr(skb); 172744fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 172844fd1c1fSVinay Kumar Yadav struct chtls_hws *tlsk; 172944fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 173044fd1c1fSVinay Kumar Yadav 173144fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 173244fd1c1fSVinay Kumar Yadav tlsk = &csk->tlshws; 173344fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 173444fd1c1fSVinay Kumar Yadav 173544fd1c1fSVinay Kumar Yadav if (unlikely(sk->sk_shutdown & RCV_SHUTDOWN)) { 173644fd1c1fSVinay Kumar Yadav handle_excess_rx(sk, skb); 173744fd1c1fSVinay Kumar Yadav return; 173844fd1c1fSVinay Kumar Yadav } 173944fd1c1fSVinay Kumar Yadav 174044fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->seq = ntohl(hdr->seq); 174144fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->flags = 0; 174244fd1c1fSVinay Kumar Yadav skb_ulp_mode(skb) = ULP_MODE_TLS; 174344fd1c1fSVinay Kumar Yadav 174444fd1c1fSVinay Kumar Yadav skb_reset_transport_header(skb); 174544fd1c1fSVinay Kumar Yadav __skb_pull(skb, sizeof(*hdr)); 174644fd1c1fSVinay Kumar Yadav if (!skb->data_len) 174744fd1c1fSVinay Kumar Yadav __skb_trim(skb, 174844fd1c1fSVinay Kumar Yadav CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd))); 174944fd1c1fSVinay Kumar Yadav 175044fd1c1fSVinay Kumar Yadav if (unlikely(tp->urg_data == TCP_URG_NOTYET && tp->urg_seq - 175144fd1c1fSVinay Kumar Yadav tp->rcv_nxt < skb->len)) 175244fd1c1fSVinay Kumar Yadav tp->urg_data = TCP_URG_VALID | 175344fd1c1fSVinay Kumar Yadav skb->data[tp->urg_seq - tp->rcv_nxt]; 175444fd1c1fSVinay Kumar Yadav 175544fd1c1fSVinay Kumar Yadav tcp_hdr(skb)->fin = 0; 175644fd1c1fSVinay Kumar Yadav tlsk->pldlen = CPL_TLS_DATA_LENGTH_G(ntohl(hdr->length_pkd)); 175744fd1c1fSVinay Kumar Yadav __skb_queue_tail(&tlsk->sk_recv_queue, skb); 175844fd1c1fSVinay Kumar Yadav } 175944fd1c1fSVinay Kumar Yadav 176044fd1c1fSVinay Kumar Yadav static int chtls_rx_pdu(struct chtls_dev *cdev, struct sk_buff *skb) 176144fd1c1fSVinay Kumar Yadav { 176244fd1c1fSVinay Kumar Yadav struct cpl_tls_data *req = cplhdr(skb); 176344fd1c1fSVinay Kumar Yadav unsigned int hwtid = GET_TID(req); 176444fd1c1fSVinay Kumar Yadav struct sock *sk; 176544fd1c1fSVinay Kumar Yadav 176644fd1c1fSVinay Kumar Yadav sk = lookup_tid(cdev->tids, hwtid); 176744fd1c1fSVinay Kumar Yadav if (unlikely(!sk)) { 176844fd1c1fSVinay Kumar Yadav pr_err("can't find conn. for hwtid %u.\n", hwtid); 176944fd1c1fSVinay Kumar Yadav return -EINVAL; 177044fd1c1fSVinay Kumar Yadav } 177144fd1c1fSVinay Kumar Yadav skb_dst_set(skb, NULL); 177244fd1c1fSVinay Kumar Yadav process_cpl_msg(chtls_recv_pdu, sk, skb); 177344fd1c1fSVinay Kumar Yadav return 0; 177444fd1c1fSVinay Kumar Yadav } 177544fd1c1fSVinay Kumar Yadav 177644fd1c1fSVinay Kumar Yadav static void chtls_set_hdrlen(struct sk_buff *skb, unsigned int nlen) 177744fd1c1fSVinay Kumar Yadav { 177844fd1c1fSVinay Kumar Yadav struct tlsrx_cmp_hdr *tls_cmp_hdr = cplhdr(skb); 177944fd1c1fSVinay Kumar Yadav 178044fd1c1fSVinay Kumar Yadav skb->hdr_len = ntohs((__force __be16)tls_cmp_hdr->length); 178144fd1c1fSVinay Kumar Yadav tls_cmp_hdr->length = ntohs((__force __be16)nlen); 178244fd1c1fSVinay Kumar Yadav } 178344fd1c1fSVinay Kumar Yadav 178444fd1c1fSVinay Kumar Yadav static void chtls_rx_hdr(struct sock *sk, struct sk_buff *skb) 178544fd1c1fSVinay Kumar Yadav { 178644fd1c1fSVinay Kumar Yadav struct tlsrx_cmp_hdr *tls_hdr_pkt; 178744fd1c1fSVinay Kumar Yadav struct cpl_rx_tls_cmp *cmp_cpl; 178844fd1c1fSVinay Kumar Yadav struct sk_buff *skb_rec; 178944fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 179044fd1c1fSVinay Kumar Yadav struct chtls_hws *tlsk; 179144fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 179244fd1c1fSVinay Kumar Yadav 179344fd1c1fSVinay Kumar Yadav cmp_cpl = cplhdr(skb); 179444fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 179544fd1c1fSVinay Kumar Yadav tlsk = &csk->tlshws; 179644fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 179744fd1c1fSVinay Kumar Yadav 179844fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->seq = ntohl(cmp_cpl->seq); 179944fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->flags = 0; 180044fd1c1fSVinay Kumar Yadav 180144fd1c1fSVinay Kumar Yadav skb_reset_transport_header(skb); 180244fd1c1fSVinay Kumar Yadav __skb_pull(skb, sizeof(*cmp_cpl)); 180344fd1c1fSVinay Kumar Yadav tls_hdr_pkt = (struct tlsrx_cmp_hdr *)skb->data; 180444fd1c1fSVinay Kumar Yadav if (tls_hdr_pkt->res_to_mac_error & TLSRX_HDR_PKT_ERROR_M) 180544fd1c1fSVinay Kumar Yadav tls_hdr_pkt->type = CONTENT_TYPE_ERROR; 180644fd1c1fSVinay Kumar Yadav if (!skb->data_len) 180744fd1c1fSVinay Kumar Yadav __skb_trim(skb, TLS_HEADER_LENGTH); 180844fd1c1fSVinay Kumar Yadav 180944fd1c1fSVinay Kumar Yadav tp->rcv_nxt += 181044fd1c1fSVinay Kumar Yadav CPL_RX_TLS_CMP_PDULENGTH_G(ntohl(cmp_cpl->pdulength_length)); 181144fd1c1fSVinay Kumar Yadav 181244fd1c1fSVinay Kumar Yadav ULP_SKB_CB(skb)->flags |= ULPCB_FLAG_TLS_HDR; 181344fd1c1fSVinay Kumar Yadav skb_rec = __skb_dequeue(&tlsk->sk_recv_queue); 181444fd1c1fSVinay Kumar Yadav if (!skb_rec) { 181544fd1c1fSVinay Kumar Yadav __skb_queue_tail(&sk->sk_receive_queue, skb); 181644fd1c1fSVinay Kumar Yadav } else { 181744fd1c1fSVinay Kumar Yadav chtls_set_hdrlen(skb, tlsk->pldlen); 181844fd1c1fSVinay Kumar Yadav tlsk->pldlen = 0; 181944fd1c1fSVinay Kumar Yadav __skb_queue_tail(&sk->sk_receive_queue, skb); 182044fd1c1fSVinay Kumar Yadav __skb_queue_tail(&sk->sk_receive_queue, skb_rec); 182144fd1c1fSVinay Kumar Yadav } 182244fd1c1fSVinay Kumar Yadav 182344fd1c1fSVinay Kumar Yadav if (!sock_flag(sk, SOCK_DEAD)) { 182444fd1c1fSVinay Kumar Yadav check_sk_callbacks(csk); 182544fd1c1fSVinay Kumar Yadav sk->sk_data_ready(sk); 182644fd1c1fSVinay Kumar Yadav } 182744fd1c1fSVinay Kumar Yadav } 182844fd1c1fSVinay Kumar Yadav 182944fd1c1fSVinay Kumar Yadav static int chtls_rx_cmp(struct chtls_dev *cdev, struct sk_buff *skb) 183044fd1c1fSVinay Kumar Yadav { 183144fd1c1fSVinay Kumar Yadav struct cpl_rx_tls_cmp *req = cplhdr(skb); 183244fd1c1fSVinay Kumar Yadav unsigned int hwtid = GET_TID(req); 183344fd1c1fSVinay Kumar Yadav struct sock *sk; 183444fd1c1fSVinay Kumar Yadav 183544fd1c1fSVinay Kumar Yadav sk = lookup_tid(cdev->tids, hwtid); 183644fd1c1fSVinay Kumar Yadav if (unlikely(!sk)) { 183744fd1c1fSVinay Kumar Yadav pr_err("can't find conn. for hwtid %u.\n", hwtid); 183844fd1c1fSVinay Kumar Yadav return -EINVAL; 183944fd1c1fSVinay Kumar Yadav } 184044fd1c1fSVinay Kumar Yadav skb_dst_set(skb, NULL); 184144fd1c1fSVinay Kumar Yadav process_cpl_msg(chtls_rx_hdr, sk, skb); 184244fd1c1fSVinay Kumar Yadav 184344fd1c1fSVinay Kumar Yadav return 0; 184444fd1c1fSVinay Kumar Yadav } 184544fd1c1fSVinay Kumar Yadav 184644fd1c1fSVinay Kumar Yadav static void chtls_timewait(struct sock *sk) 184744fd1c1fSVinay Kumar Yadav { 184844fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 184944fd1c1fSVinay Kumar Yadav 185044fd1c1fSVinay Kumar Yadav tp->rcv_nxt++; 185144fd1c1fSVinay Kumar Yadav tp->rx_opt.ts_recent_stamp = ktime_get_seconds(); 185244fd1c1fSVinay Kumar Yadav tp->srtt_us = 0; 185344fd1c1fSVinay Kumar Yadav tcp_time_wait(sk, TCP_TIME_WAIT, 0); 185444fd1c1fSVinay Kumar Yadav } 185544fd1c1fSVinay Kumar Yadav 185644fd1c1fSVinay Kumar Yadav static void chtls_peer_close(struct sock *sk, struct sk_buff *skb) 185744fd1c1fSVinay Kumar Yadav { 185844fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = rcu_dereference_sk_user_data(sk); 185944fd1c1fSVinay Kumar Yadav 186044fd1c1fSVinay Kumar Yadav if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) 186144fd1c1fSVinay Kumar Yadav goto out; 186244fd1c1fSVinay Kumar Yadav 186344fd1c1fSVinay Kumar Yadav sk->sk_shutdown |= RCV_SHUTDOWN; 186444fd1c1fSVinay Kumar Yadav sock_set_flag(sk, SOCK_DONE); 186544fd1c1fSVinay Kumar Yadav 186644fd1c1fSVinay Kumar Yadav switch (sk->sk_state) { 186744fd1c1fSVinay Kumar Yadav case TCP_SYN_RECV: 186844fd1c1fSVinay Kumar Yadav case TCP_ESTABLISHED: 186944fd1c1fSVinay Kumar Yadav tcp_set_state(sk, TCP_CLOSE_WAIT); 187044fd1c1fSVinay Kumar Yadav break; 187144fd1c1fSVinay Kumar Yadav case TCP_FIN_WAIT1: 187244fd1c1fSVinay Kumar Yadav tcp_set_state(sk, TCP_CLOSING); 187344fd1c1fSVinay Kumar Yadav break; 187444fd1c1fSVinay Kumar Yadav case TCP_FIN_WAIT2: 187544fd1c1fSVinay Kumar Yadav chtls_release_resources(sk); 187644fd1c1fSVinay Kumar Yadav if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) 187744fd1c1fSVinay Kumar Yadav chtls_conn_done(sk); 187844fd1c1fSVinay Kumar Yadav else 187944fd1c1fSVinay Kumar Yadav chtls_timewait(sk); 188044fd1c1fSVinay Kumar Yadav break; 188144fd1c1fSVinay Kumar Yadav default: 188244fd1c1fSVinay Kumar Yadav pr_info("cpl_peer_close in bad state %d\n", sk->sk_state); 188344fd1c1fSVinay Kumar Yadav } 188444fd1c1fSVinay Kumar Yadav 188544fd1c1fSVinay Kumar Yadav if (!sock_flag(sk, SOCK_DEAD)) { 188644fd1c1fSVinay Kumar Yadav sk->sk_state_change(sk); 188744fd1c1fSVinay Kumar Yadav /* Do not send POLL_HUP for half duplex close. */ 188844fd1c1fSVinay Kumar Yadav 188944fd1c1fSVinay Kumar Yadav if ((sk->sk_shutdown & SEND_SHUTDOWN) || 189044fd1c1fSVinay Kumar Yadav sk->sk_state == TCP_CLOSE) 189144fd1c1fSVinay Kumar Yadav sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP); 189244fd1c1fSVinay Kumar Yadav else 189344fd1c1fSVinay Kumar Yadav sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN); 189444fd1c1fSVinay Kumar Yadav } 189544fd1c1fSVinay Kumar Yadav out: 189644fd1c1fSVinay Kumar Yadav kfree_skb(skb); 189744fd1c1fSVinay Kumar Yadav } 189844fd1c1fSVinay Kumar Yadav 189944fd1c1fSVinay Kumar Yadav static void chtls_close_con_rpl(struct sock *sk, struct sk_buff *skb) 190044fd1c1fSVinay Kumar Yadav { 190144fd1c1fSVinay Kumar Yadav struct cpl_close_con_rpl *rpl = cplhdr(skb) + RSS_HDR; 190244fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 190344fd1c1fSVinay Kumar Yadav struct tcp_sock *tp; 190444fd1c1fSVinay Kumar Yadav 190544fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 190644fd1c1fSVinay Kumar Yadav 190744fd1c1fSVinay Kumar Yadav if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) 190844fd1c1fSVinay Kumar Yadav goto out; 190944fd1c1fSVinay Kumar Yadav 191044fd1c1fSVinay Kumar Yadav tp = tcp_sk(sk); 191144fd1c1fSVinay Kumar Yadav 191244fd1c1fSVinay Kumar Yadav tp->snd_una = ntohl(rpl->snd_nxt) - 1; /* exclude FIN */ 191344fd1c1fSVinay Kumar Yadav 191444fd1c1fSVinay Kumar Yadav switch (sk->sk_state) { 191544fd1c1fSVinay Kumar Yadav case TCP_CLOSING: 191644fd1c1fSVinay Kumar Yadav chtls_release_resources(sk); 191744fd1c1fSVinay Kumar Yadav if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) 191844fd1c1fSVinay Kumar Yadav chtls_conn_done(sk); 191944fd1c1fSVinay Kumar Yadav else 192044fd1c1fSVinay Kumar Yadav chtls_timewait(sk); 192144fd1c1fSVinay Kumar Yadav break; 192244fd1c1fSVinay Kumar Yadav case TCP_LAST_ACK: 192344fd1c1fSVinay Kumar Yadav chtls_release_resources(sk); 192444fd1c1fSVinay Kumar Yadav chtls_conn_done(sk); 192544fd1c1fSVinay Kumar Yadav break; 192644fd1c1fSVinay Kumar Yadav case TCP_FIN_WAIT1: 192744fd1c1fSVinay Kumar Yadav tcp_set_state(sk, TCP_FIN_WAIT2); 192844fd1c1fSVinay Kumar Yadav sk->sk_shutdown |= SEND_SHUTDOWN; 192944fd1c1fSVinay Kumar Yadav 193044fd1c1fSVinay Kumar Yadav if (!sock_flag(sk, SOCK_DEAD)) 193144fd1c1fSVinay Kumar Yadav sk->sk_state_change(sk); 193244fd1c1fSVinay Kumar Yadav else if (tcp_sk(sk)->linger2 < 0 && 193344fd1c1fSVinay Kumar Yadav !csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN)) 193444fd1c1fSVinay Kumar Yadav chtls_abort_conn(sk, skb); 193544fd1c1fSVinay Kumar Yadav break; 193644fd1c1fSVinay Kumar Yadav default: 193744fd1c1fSVinay Kumar Yadav pr_info("close_con_rpl in bad state %d\n", sk->sk_state); 193844fd1c1fSVinay Kumar Yadav } 193944fd1c1fSVinay Kumar Yadav out: 194044fd1c1fSVinay Kumar Yadav kfree_skb(skb); 194144fd1c1fSVinay Kumar Yadav } 194244fd1c1fSVinay Kumar Yadav 194344fd1c1fSVinay Kumar Yadav static struct sk_buff *get_cpl_skb(struct sk_buff *skb, 194444fd1c1fSVinay Kumar Yadav size_t len, gfp_t gfp) 194544fd1c1fSVinay Kumar Yadav { 194644fd1c1fSVinay Kumar Yadav if (likely(!skb_is_nonlinear(skb) && !skb_cloned(skb))) { 194744fd1c1fSVinay Kumar Yadav WARN_ONCE(skb->len < len, "skb alloc error"); 194844fd1c1fSVinay Kumar Yadav __skb_trim(skb, len); 194944fd1c1fSVinay Kumar Yadav skb_get(skb); 195044fd1c1fSVinay Kumar Yadav } else { 195144fd1c1fSVinay Kumar Yadav skb = alloc_skb(len, gfp); 195244fd1c1fSVinay Kumar Yadav if (skb) 195344fd1c1fSVinay Kumar Yadav __skb_put(skb, len); 195444fd1c1fSVinay Kumar Yadav } 195544fd1c1fSVinay Kumar Yadav return skb; 195644fd1c1fSVinay Kumar Yadav } 195744fd1c1fSVinay Kumar Yadav 195844fd1c1fSVinay Kumar Yadav static void set_abort_rpl_wr(struct sk_buff *skb, unsigned int tid, 195944fd1c1fSVinay Kumar Yadav int cmd) 196044fd1c1fSVinay Kumar Yadav { 196144fd1c1fSVinay Kumar Yadav struct cpl_abort_rpl *rpl = cplhdr(skb); 196244fd1c1fSVinay Kumar Yadav 196344fd1c1fSVinay Kumar Yadav INIT_TP_WR_CPL(rpl, CPL_ABORT_RPL, tid); 196444fd1c1fSVinay Kumar Yadav rpl->cmd = cmd; 196544fd1c1fSVinay Kumar Yadav } 196644fd1c1fSVinay Kumar Yadav 196744fd1c1fSVinay Kumar Yadav static void send_defer_abort_rpl(struct chtls_dev *cdev, struct sk_buff *skb) 196844fd1c1fSVinay Kumar Yadav { 196944fd1c1fSVinay Kumar Yadav struct cpl_abort_req_rss *req = cplhdr(skb); 197044fd1c1fSVinay Kumar Yadav struct sk_buff *reply_skb; 197144fd1c1fSVinay Kumar Yadav 197244fd1c1fSVinay Kumar Yadav reply_skb = alloc_skb(sizeof(struct cpl_abort_rpl), 197344fd1c1fSVinay Kumar Yadav GFP_KERNEL | __GFP_NOFAIL); 197444fd1c1fSVinay Kumar Yadav __skb_put(reply_skb, sizeof(struct cpl_abort_rpl)); 197544fd1c1fSVinay Kumar Yadav set_abort_rpl_wr(reply_skb, GET_TID(req), 197644fd1c1fSVinay Kumar Yadav (req->status & CPL_ABORT_NO_RST)); 197744fd1c1fSVinay Kumar Yadav set_wr_txq(reply_skb, CPL_PRIORITY_DATA, req->status >> 1); 197844fd1c1fSVinay Kumar Yadav cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb); 197944fd1c1fSVinay Kumar Yadav kfree_skb(skb); 198044fd1c1fSVinay Kumar Yadav } 198144fd1c1fSVinay Kumar Yadav 198244fd1c1fSVinay Kumar Yadav /* 198344fd1c1fSVinay Kumar Yadav * Add an skb to the deferred skb queue for processing from process context. 198444fd1c1fSVinay Kumar Yadav */ 198544fd1c1fSVinay Kumar Yadav static void t4_defer_reply(struct sk_buff *skb, struct chtls_dev *cdev, 198644fd1c1fSVinay Kumar Yadav defer_handler_t handler) 198744fd1c1fSVinay Kumar Yadav { 198844fd1c1fSVinay Kumar Yadav DEFERRED_SKB_CB(skb)->handler = handler; 198944fd1c1fSVinay Kumar Yadav spin_lock_bh(&cdev->deferq.lock); 199044fd1c1fSVinay Kumar Yadav __skb_queue_tail(&cdev->deferq, skb); 199144fd1c1fSVinay Kumar Yadav if (skb_queue_len(&cdev->deferq) == 1) 199244fd1c1fSVinay Kumar Yadav schedule_work(&cdev->deferq_task); 199344fd1c1fSVinay Kumar Yadav spin_unlock_bh(&cdev->deferq.lock); 199444fd1c1fSVinay Kumar Yadav } 199544fd1c1fSVinay Kumar Yadav 199644fd1c1fSVinay Kumar Yadav static void send_abort_rpl(struct sock *sk, struct sk_buff *skb, 199744fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev, int status, int queue) 199844fd1c1fSVinay Kumar Yadav { 199944fd1c1fSVinay Kumar Yadav struct cpl_abort_req_rss *req = cplhdr(skb); 200044fd1c1fSVinay Kumar Yadav struct sk_buff *reply_skb; 200144fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 200244fd1c1fSVinay Kumar Yadav 200344fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 200444fd1c1fSVinay Kumar Yadav 200544fd1c1fSVinay Kumar Yadav reply_skb = alloc_skb(sizeof(struct cpl_abort_rpl), 200644fd1c1fSVinay Kumar Yadav GFP_KERNEL); 200744fd1c1fSVinay Kumar Yadav 200844fd1c1fSVinay Kumar Yadav if (!reply_skb) { 200944fd1c1fSVinay Kumar Yadav req->status = (queue << 1); 201044fd1c1fSVinay Kumar Yadav t4_defer_reply(skb, cdev, send_defer_abort_rpl); 201144fd1c1fSVinay Kumar Yadav return; 201244fd1c1fSVinay Kumar Yadav } 201344fd1c1fSVinay Kumar Yadav 201444fd1c1fSVinay Kumar Yadav set_abort_rpl_wr(reply_skb, GET_TID(req), status); 201544fd1c1fSVinay Kumar Yadav kfree_skb(skb); 201644fd1c1fSVinay Kumar Yadav 201744fd1c1fSVinay Kumar Yadav set_wr_txq(reply_skb, CPL_PRIORITY_DATA, queue); 201844fd1c1fSVinay Kumar Yadav if (csk_conn_inline(csk)) { 201944fd1c1fSVinay Kumar Yadav struct l2t_entry *e = csk->l2t_entry; 202044fd1c1fSVinay Kumar Yadav 202144fd1c1fSVinay Kumar Yadav if (e && sk->sk_state != TCP_SYN_RECV) { 202244fd1c1fSVinay Kumar Yadav cxgb4_l2t_send(csk->egress_dev, reply_skb, e); 202344fd1c1fSVinay Kumar Yadav return; 202444fd1c1fSVinay Kumar Yadav } 202544fd1c1fSVinay Kumar Yadav } 202644fd1c1fSVinay Kumar Yadav cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb); 202744fd1c1fSVinay Kumar Yadav } 202844fd1c1fSVinay Kumar Yadav 202944fd1c1fSVinay Kumar Yadav static void chtls_send_abort_rpl(struct sock *sk, struct sk_buff *skb, 203044fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev, 203144fd1c1fSVinay Kumar Yadav int status, int queue) 203244fd1c1fSVinay Kumar Yadav { 203344fd1c1fSVinay Kumar Yadav struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR; 203444fd1c1fSVinay Kumar Yadav struct sk_buff *reply_skb; 203544fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 203644fd1c1fSVinay Kumar Yadav unsigned int tid; 203744fd1c1fSVinay Kumar Yadav 203844fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 203944fd1c1fSVinay Kumar Yadav tid = GET_TID(req); 204044fd1c1fSVinay Kumar Yadav 204144fd1c1fSVinay Kumar Yadav reply_skb = get_cpl_skb(skb, sizeof(struct cpl_abort_rpl), gfp_any()); 204244fd1c1fSVinay Kumar Yadav if (!reply_skb) { 204344fd1c1fSVinay Kumar Yadav req->status = (queue << 1) | status; 204444fd1c1fSVinay Kumar Yadav t4_defer_reply(skb, cdev, send_defer_abort_rpl); 204544fd1c1fSVinay Kumar Yadav return; 204644fd1c1fSVinay Kumar Yadav } 204744fd1c1fSVinay Kumar Yadav 204844fd1c1fSVinay Kumar Yadav set_abort_rpl_wr(reply_skb, tid, status); 204944fd1c1fSVinay Kumar Yadav kfree_skb(skb); 205044fd1c1fSVinay Kumar Yadav set_wr_txq(reply_skb, CPL_PRIORITY_DATA, queue); 205144fd1c1fSVinay Kumar Yadav if (csk_conn_inline(csk)) { 205244fd1c1fSVinay Kumar Yadav struct l2t_entry *e = csk->l2t_entry; 205344fd1c1fSVinay Kumar Yadav 205444fd1c1fSVinay Kumar Yadav if (e && sk->sk_state != TCP_SYN_RECV) { 205544fd1c1fSVinay Kumar Yadav cxgb4_l2t_send(csk->egress_dev, reply_skb, e); 205644fd1c1fSVinay Kumar Yadav return; 205744fd1c1fSVinay Kumar Yadav } 205844fd1c1fSVinay Kumar Yadav } 205944fd1c1fSVinay Kumar Yadav cxgb4_ofld_send(cdev->lldi->ports[0], reply_skb); 206044fd1c1fSVinay Kumar Yadav } 206144fd1c1fSVinay Kumar Yadav 206244fd1c1fSVinay Kumar Yadav /* 206344fd1c1fSVinay Kumar Yadav * This is run from a listener's backlog to abort a child connection in 206444fd1c1fSVinay Kumar Yadav * SYN_RCV state (i.e., one on the listener's SYN queue). 206544fd1c1fSVinay Kumar Yadav */ 206644fd1c1fSVinay Kumar Yadav static void bl_abort_syn_rcv(struct sock *lsk, struct sk_buff *skb) 206744fd1c1fSVinay Kumar Yadav { 206844fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 206944fd1c1fSVinay Kumar Yadav struct sock *child; 207044fd1c1fSVinay Kumar Yadav int queue; 207144fd1c1fSVinay Kumar Yadav 207244fd1c1fSVinay Kumar Yadav child = skb->sk; 207344fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(child); 207444fd1c1fSVinay Kumar Yadav queue = csk->txq_idx; 207544fd1c1fSVinay Kumar Yadav 207644fd1c1fSVinay Kumar Yadav skb->sk = NULL; 207744fd1c1fSVinay Kumar Yadav do_abort_syn_rcv(child, lsk); 207844fd1c1fSVinay Kumar Yadav send_abort_rpl(child, skb, BLOG_SKB_CB(skb)->cdev, 207944fd1c1fSVinay Kumar Yadav CPL_ABORT_NO_RST, queue); 208044fd1c1fSVinay Kumar Yadav } 208144fd1c1fSVinay Kumar Yadav 208244fd1c1fSVinay Kumar Yadav static int abort_syn_rcv(struct sock *sk, struct sk_buff *skb) 208344fd1c1fSVinay Kumar Yadav { 208444fd1c1fSVinay Kumar Yadav const struct request_sock *oreq; 208544fd1c1fSVinay Kumar Yadav struct listen_ctx *listen_ctx; 208644fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 208744fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev; 208844fd1c1fSVinay Kumar Yadav struct sock *psk; 208944fd1c1fSVinay Kumar Yadav void *ctx; 209044fd1c1fSVinay Kumar Yadav 209144fd1c1fSVinay Kumar Yadav csk = sk->sk_user_data; 209244fd1c1fSVinay Kumar Yadav oreq = csk->passive_reap_next; 209344fd1c1fSVinay Kumar Yadav cdev = csk->cdev; 209444fd1c1fSVinay Kumar Yadav 209544fd1c1fSVinay Kumar Yadav if (!oreq) 209644fd1c1fSVinay Kumar Yadav return -1; 209744fd1c1fSVinay Kumar Yadav 209844fd1c1fSVinay Kumar Yadav ctx = lookup_stid(cdev->tids, oreq->ts_recent); 209944fd1c1fSVinay Kumar Yadav if (!ctx) 210044fd1c1fSVinay Kumar Yadav return -1; 210144fd1c1fSVinay Kumar Yadav 210244fd1c1fSVinay Kumar Yadav listen_ctx = (struct listen_ctx *)ctx; 210344fd1c1fSVinay Kumar Yadav psk = listen_ctx->lsk; 210444fd1c1fSVinay Kumar Yadav 210544fd1c1fSVinay Kumar Yadav bh_lock_sock(psk); 210644fd1c1fSVinay Kumar Yadav if (!sock_owned_by_user(psk)) { 210744fd1c1fSVinay Kumar Yadav int queue = csk->txq_idx; 210844fd1c1fSVinay Kumar Yadav 210944fd1c1fSVinay Kumar Yadav do_abort_syn_rcv(sk, psk); 211044fd1c1fSVinay Kumar Yadav send_abort_rpl(sk, skb, cdev, CPL_ABORT_NO_RST, queue); 211144fd1c1fSVinay Kumar Yadav } else { 211244fd1c1fSVinay Kumar Yadav skb->sk = sk; 211344fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->backlog_rcv = bl_abort_syn_rcv; 211444fd1c1fSVinay Kumar Yadav __sk_add_backlog(psk, skb); 211544fd1c1fSVinay Kumar Yadav } 211644fd1c1fSVinay Kumar Yadav bh_unlock_sock(psk); 211744fd1c1fSVinay Kumar Yadav return 0; 211844fd1c1fSVinay Kumar Yadav } 211944fd1c1fSVinay Kumar Yadav 212044fd1c1fSVinay Kumar Yadav static void chtls_abort_req_rss(struct sock *sk, struct sk_buff *skb) 212144fd1c1fSVinay Kumar Yadav { 212244fd1c1fSVinay Kumar Yadav const struct cpl_abort_req_rss *req = cplhdr(skb) + RSS_HDR; 212344fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = sk->sk_user_data; 212444fd1c1fSVinay Kumar Yadav int rst_status = CPL_ABORT_NO_RST; 212544fd1c1fSVinay Kumar Yadav int queue = csk->txq_idx; 212644fd1c1fSVinay Kumar Yadav 212744fd1c1fSVinay Kumar Yadav if (is_neg_adv(req->status)) { 212844fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_SYN_RECV) 212944fd1c1fSVinay Kumar Yadav chtls_set_tcb_tflag(sk, 0, 0); 213044fd1c1fSVinay Kumar Yadav 213144fd1c1fSVinay Kumar Yadav kfree_skb(skb); 213244fd1c1fSVinay Kumar Yadav return; 213344fd1c1fSVinay Kumar Yadav } 213444fd1c1fSVinay Kumar Yadav 213544fd1c1fSVinay Kumar Yadav csk_reset_flag(csk, CSK_ABORT_REQ_RCVD); 213644fd1c1fSVinay Kumar Yadav 213744fd1c1fSVinay Kumar Yadav if (!csk_flag_nochk(csk, CSK_ABORT_SHUTDOWN) && 213844fd1c1fSVinay Kumar Yadav !csk_flag_nochk(csk, CSK_TX_DATA_SENT)) { 213944fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 214044fd1c1fSVinay Kumar Yadav 214144fd1c1fSVinay Kumar Yadav if (send_tx_flowc_wr(sk, 0, tp->snd_nxt, tp->rcv_nxt) < 0) 214244fd1c1fSVinay Kumar Yadav WARN_ONCE(1, "send_tx_flowc error"); 214344fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_TX_DATA_SENT); 214444fd1c1fSVinay Kumar Yadav } 214544fd1c1fSVinay Kumar Yadav 214644fd1c1fSVinay Kumar Yadav csk_set_flag(csk, CSK_ABORT_SHUTDOWN); 214744fd1c1fSVinay Kumar Yadav 214844fd1c1fSVinay Kumar Yadav if (!csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) { 214944fd1c1fSVinay Kumar Yadav sk->sk_err = ETIMEDOUT; 215044fd1c1fSVinay Kumar Yadav 215144fd1c1fSVinay Kumar Yadav if (!sock_flag(sk, SOCK_DEAD)) 215244fd1c1fSVinay Kumar Yadav sk->sk_error_report(sk); 215344fd1c1fSVinay Kumar Yadav 215444fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_SYN_RECV && !abort_syn_rcv(sk, skb)) 215544fd1c1fSVinay Kumar Yadav return; 215644fd1c1fSVinay Kumar Yadav 215744fd1c1fSVinay Kumar Yadav chtls_release_resources(sk); 215844fd1c1fSVinay Kumar Yadav chtls_conn_done(sk); 215944fd1c1fSVinay Kumar Yadav } 216044fd1c1fSVinay Kumar Yadav 216144fd1c1fSVinay Kumar Yadav chtls_send_abort_rpl(sk, skb, BLOG_SKB_CB(skb)->cdev, 216244fd1c1fSVinay Kumar Yadav rst_status, queue); 216344fd1c1fSVinay Kumar Yadav } 216444fd1c1fSVinay Kumar Yadav 216544fd1c1fSVinay Kumar Yadav static void chtls_abort_rpl_rss(struct sock *sk, struct sk_buff *skb) 216644fd1c1fSVinay Kumar Yadav { 216744fd1c1fSVinay Kumar Yadav struct cpl_abort_rpl_rss *rpl = cplhdr(skb) + RSS_HDR; 216844fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 216944fd1c1fSVinay Kumar Yadav struct chtls_dev *cdev; 217044fd1c1fSVinay Kumar Yadav 217144fd1c1fSVinay Kumar Yadav csk = rcu_dereference_sk_user_data(sk); 217244fd1c1fSVinay Kumar Yadav cdev = csk->cdev; 217344fd1c1fSVinay Kumar Yadav 217444fd1c1fSVinay Kumar Yadav if (csk_flag_nochk(csk, CSK_ABORT_RPL_PENDING)) { 217544fd1c1fSVinay Kumar Yadav csk_reset_flag(csk, CSK_ABORT_RPL_PENDING); 217644fd1c1fSVinay Kumar Yadav if (!csk_flag_nochk(csk, CSK_ABORT_REQ_RCVD)) { 217744fd1c1fSVinay Kumar Yadav if (sk->sk_state == TCP_SYN_SENT) { 217844fd1c1fSVinay Kumar Yadav cxgb4_remove_tid(cdev->tids, 217944fd1c1fSVinay Kumar Yadav csk->port_id, 218044fd1c1fSVinay Kumar Yadav GET_TID(rpl), 218144fd1c1fSVinay Kumar Yadav sk->sk_family); 218244fd1c1fSVinay Kumar Yadav sock_put(sk); 218344fd1c1fSVinay Kumar Yadav } 218444fd1c1fSVinay Kumar Yadav chtls_release_resources(sk); 218544fd1c1fSVinay Kumar Yadav chtls_conn_done(sk); 218644fd1c1fSVinay Kumar Yadav } 218744fd1c1fSVinay Kumar Yadav } 218844fd1c1fSVinay Kumar Yadav kfree_skb(skb); 218944fd1c1fSVinay Kumar Yadav } 219044fd1c1fSVinay Kumar Yadav 219144fd1c1fSVinay Kumar Yadav static int chtls_conn_cpl(struct chtls_dev *cdev, struct sk_buff *skb) 219244fd1c1fSVinay Kumar Yadav { 219344fd1c1fSVinay Kumar Yadav struct cpl_peer_close *req = cplhdr(skb) + RSS_HDR; 219444fd1c1fSVinay Kumar Yadav void (*fn)(struct sock *sk, struct sk_buff *skb); 219544fd1c1fSVinay Kumar Yadav unsigned int hwtid = GET_TID(req); 219644fd1c1fSVinay Kumar Yadav struct chtls_sock *csk; 219744fd1c1fSVinay Kumar Yadav struct sock *sk; 219844fd1c1fSVinay Kumar Yadav u8 opcode; 219944fd1c1fSVinay Kumar Yadav 220044fd1c1fSVinay Kumar Yadav opcode = ((const struct rss_header *)cplhdr(skb))->opcode; 220144fd1c1fSVinay Kumar Yadav 220244fd1c1fSVinay Kumar Yadav sk = lookup_tid(cdev->tids, hwtid); 220344fd1c1fSVinay Kumar Yadav if (!sk) 220444fd1c1fSVinay Kumar Yadav goto rel_skb; 220544fd1c1fSVinay Kumar Yadav 220644fd1c1fSVinay Kumar Yadav csk = sk->sk_user_data; 220744fd1c1fSVinay Kumar Yadav 220844fd1c1fSVinay Kumar Yadav switch (opcode) { 220944fd1c1fSVinay Kumar Yadav case CPL_PEER_CLOSE: 221044fd1c1fSVinay Kumar Yadav fn = chtls_peer_close; 221144fd1c1fSVinay Kumar Yadav break; 221244fd1c1fSVinay Kumar Yadav case CPL_CLOSE_CON_RPL: 221344fd1c1fSVinay Kumar Yadav fn = chtls_close_con_rpl; 221444fd1c1fSVinay Kumar Yadav break; 221544fd1c1fSVinay Kumar Yadav case CPL_ABORT_REQ_RSS: 221644fd1c1fSVinay Kumar Yadav /* 221744fd1c1fSVinay Kumar Yadav * Save the offload device in the skb, we may process this 221844fd1c1fSVinay Kumar Yadav * message after the socket has closed. 221944fd1c1fSVinay Kumar Yadav */ 222044fd1c1fSVinay Kumar Yadav BLOG_SKB_CB(skb)->cdev = csk->cdev; 222144fd1c1fSVinay Kumar Yadav fn = chtls_abort_req_rss; 222244fd1c1fSVinay Kumar Yadav break; 222344fd1c1fSVinay Kumar Yadav case CPL_ABORT_RPL_RSS: 222444fd1c1fSVinay Kumar Yadav fn = chtls_abort_rpl_rss; 222544fd1c1fSVinay Kumar Yadav break; 222644fd1c1fSVinay Kumar Yadav default: 222744fd1c1fSVinay Kumar Yadav goto rel_skb; 222844fd1c1fSVinay Kumar Yadav } 222944fd1c1fSVinay Kumar Yadav 223044fd1c1fSVinay Kumar Yadav process_cpl_msg(fn, sk, skb); 223144fd1c1fSVinay Kumar Yadav return 0; 223244fd1c1fSVinay Kumar Yadav 223344fd1c1fSVinay Kumar Yadav rel_skb: 223444fd1c1fSVinay Kumar Yadav kfree_skb(skb); 223544fd1c1fSVinay Kumar Yadav return 0; 223644fd1c1fSVinay Kumar Yadav } 223744fd1c1fSVinay Kumar Yadav 223844fd1c1fSVinay Kumar Yadav static void chtls_rx_ack(struct sock *sk, struct sk_buff *skb) 223944fd1c1fSVinay Kumar Yadav { 224044fd1c1fSVinay Kumar Yadav struct cpl_fw4_ack *hdr = cplhdr(skb) + RSS_HDR; 224144fd1c1fSVinay Kumar Yadav struct chtls_sock *csk = sk->sk_user_data; 224244fd1c1fSVinay Kumar Yadav struct tcp_sock *tp = tcp_sk(sk); 224344fd1c1fSVinay Kumar Yadav u32 credits = hdr->credits; 224444fd1c1fSVinay Kumar Yadav u32 snd_una; 224544fd1c1fSVinay Kumar Yadav 224644fd1c1fSVinay Kumar Yadav snd_una = ntohl(hdr->snd_una); 224744fd1c1fSVinay Kumar Yadav csk->wr_credits += credits; 224844fd1c1fSVinay Kumar Yadav 224944fd1c1fSVinay Kumar Yadav if (csk->wr_unacked > csk->wr_max_credits - csk->wr_credits) 225044fd1c1fSVinay Kumar Yadav csk->wr_unacked = csk->wr_max_credits - csk->wr_credits; 225144fd1c1fSVinay Kumar Yadav 225244fd1c1fSVinay Kumar Yadav while (credits) { 225344fd1c1fSVinay Kumar Yadav struct sk_buff *pskb = csk->wr_skb_head; 225444fd1c1fSVinay Kumar Yadav u32 csum; 225544fd1c1fSVinay Kumar Yadav 225644fd1c1fSVinay Kumar Yadav if (unlikely(!pskb)) { 225744fd1c1fSVinay Kumar Yadav if (csk->wr_nondata) 225844fd1c1fSVinay Kumar Yadav csk->wr_nondata -= credits; 225944fd1c1fSVinay Kumar Yadav break; 226044fd1c1fSVinay Kumar Yadav } 226144fd1c1fSVinay Kumar Yadav csum = (__force u32)pskb->csum; 226244fd1c1fSVinay Kumar Yadav if (unlikely(credits < csum)) { 226344fd1c1fSVinay Kumar Yadav pskb->csum = (__force __wsum)(csum - credits); 226444fd1c1fSVinay Kumar Yadav break; 226544fd1c1fSVinay Kumar Yadav } 226644fd1c1fSVinay Kumar Yadav dequeue_wr(sk); 226744fd1c1fSVinay Kumar Yadav credits -= csum; 226844fd1c1fSVinay Kumar Yadav kfree_skb(pskb); 226944fd1c1fSVinay Kumar Yadav } 227044fd1c1fSVinay Kumar Yadav if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_SEQVAL) { 227144fd1c1fSVinay Kumar Yadav if (unlikely(before(snd_una, tp->snd_una))) { 227244fd1c1fSVinay Kumar Yadav kfree_skb(skb); 227344fd1c1fSVinay Kumar Yadav return; 227444fd1c1fSVinay Kumar Yadav } 227544fd1c1fSVinay Kumar Yadav 227644fd1c1fSVinay Kumar Yadav if (tp->snd_una != snd_una) { 227744fd1c1fSVinay Kumar Yadav tp->snd_una = snd_una; 227844fd1c1fSVinay Kumar Yadav tp->rcv_tstamp = tcp_time_stamp(tp); 227944fd1c1fSVinay Kumar Yadav if (tp->snd_una == tp->snd_nxt && 228044fd1c1fSVinay Kumar Yadav !csk_flag_nochk(csk, CSK_TX_FAILOVER)) 228144fd1c1fSVinay Kumar Yadav csk_reset_flag(csk, CSK_TX_WAIT_IDLE); 228244fd1c1fSVinay Kumar Yadav } 228344fd1c1fSVinay Kumar Yadav } 228444fd1c1fSVinay Kumar Yadav 228544fd1c1fSVinay Kumar Yadav if (hdr->seq_vld & CPL_FW4_ACK_FLAGS_CH) { 228644fd1c1fSVinay Kumar Yadav unsigned int fclen16 = roundup(failover_flowc_wr_len, 16); 228744fd1c1fSVinay Kumar Yadav 228844fd1c1fSVinay Kumar Yadav csk->wr_credits -= fclen16; 228944fd1c1fSVinay Kumar Yadav csk_reset_flag(csk, CSK_TX_WAIT_IDLE); 229044fd1c1fSVinay Kumar Yadav csk_reset_flag(csk, CSK_TX_FAILOVER); 229144fd1c1fSVinay Kumar Yadav } 229244fd1c1fSVinay Kumar Yadav if (skb_queue_len(&csk->txq) && chtls_push_frames(csk, 0)) 229344fd1c1fSVinay Kumar Yadav sk->sk_write_space(sk); 229444fd1c1fSVinay Kumar Yadav 229544fd1c1fSVinay Kumar Yadav kfree_skb(skb); 229644fd1c1fSVinay Kumar Yadav } 229744fd1c1fSVinay Kumar Yadav 229844fd1c1fSVinay Kumar Yadav static int chtls_wr_ack(struct chtls_dev *cdev, struct sk_buff *skb) 229944fd1c1fSVinay Kumar Yadav { 230044fd1c1fSVinay Kumar Yadav struct cpl_fw4_ack *rpl = cplhdr(skb) + RSS_HDR; 230144fd1c1fSVinay Kumar Yadav unsigned int hwtid = GET_TID(rpl); 230244fd1c1fSVinay Kumar Yadav struct sock *sk; 230344fd1c1fSVinay Kumar Yadav 230444fd1c1fSVinay Kumar Yadav sk = lookup_tid(cdev->tids, hwtid); 230544fd1c1fSVinay Kumar Yadav if (unlikely(!sk)) { 230644fd1c1fSVinay Kumar Yadav pr_err("can't find conn. for hwtid %u.\n", hwtid); 230744fd1c1fSVinay Kumar Yadav return -EINVAL; 230844fd1c1fSVinay Kumar Yadav } 230944fd1c1fSVinay Kumar Yadav process_cpl_msg(chtls_rx_ack, sk, skb); 231044fd1c1fSVinay Kumar Yadav 231144fd1c1fSVinay Kumar Yadav return 0; 231244fd1c1fSVinay Kumar Yadav } 231344fd1c1fSVinay Kumar Yadav 231444fd1c1fSVinay Kumar Yadav chtls_handler_func chtls_handlers[NUM_CPL_CMDS] = { 231544fd1c1fSVinay Kumar Yadav [CPL_PASS_OPEN_RPL] = chtls_pass_open_rpl, 231644fd1c1fSVinay Kumar Yadav [CPL_CLOSE_LISTSRV_RPL] = chtls_close_listsrv_rpl, 231744fd1c1fSVinay Kumar Yadav [CPL_PASS_ACCEPT_REQ] = chtls_pass_accept_req, 231844fd1c1fSVinay Kumar Yadav [CPL_PASS_ESTABLISH] = chtls_pass_establish, 231944fd1c1fSVinay Kumar Yadav [CPL_RX_DATA] = chtls_rx_data, 232044fd1c1fSVinay Kumar Yadav [CPL_TLS_DATA] = chtls_rx_pdu, 232144fd1c1fSVinay Kumar Yadav [CPL_RX_TLS_CMP] = chtls_rx_cmp, 232244fd1c1fSVinay Kumar Yadav [CPL_PEER_CLOSE] = chtls_conn_cpl, 232344fd1c1fSVinay Kumar Yadav [CPL_CLOSE_CON_RPL] = chtls_conn_cpl, 232444fd1c1fSVinay Kumar Yadav [CPL_ABORT_REQ_RSS] = chtls_conn_cpl, 232544fd1c1fSVinay Kumar Yadav [CPL_ABORT_RPL_RSS] = chtls_conn_cpl, 232644fd1c1fSVinay Kumar Yadav [CPL_FW4_ACK] = chtls_wr_ack, 232744fd1c1fSVinay Kumar Yadav }; 2328