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path: root/net/ipv4/tcp_minisocks.c
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Diffstat (limited to 'net/ipv4/tcp_minisocks.c')
-rw-r--r--net/ipv4/tcp_minisocks.c48
1 files changed, 25 insertions, 23 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index eea1a17a9ac2..1037401c7cc8 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -692,6 +692,8 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct open_request *req,
692 struct sock *newsk = sk_alloc(PF_INET, GFP_ATOMIC, sk->sk_prot, 0); 692 struct sock *newsk = sk_alloc(PF_INET, GFP_ATOMIC, sk->sk_prot, 0);
693 693
694 if(newsk != NULL) { 694 if(newsk != NULL) {
695 struct inet_request_sock *ireq = inet_rsk(req);
696 struct tcp_request_sock *treq = tcp_rsk(req);
695 struct tcp_sock *newtp; 697 struct tcp_sock *newtp;
696 struct sk_filter *filter; 698 struct sk_filter *filter;
697 699
@@ -703,7 +705,7 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct open_request *req,
703 tcp_sk(newsk)->bind_hash = NULL; 705 tcp_sk(newsk)->bind_hash = NULL;
704 706
705 /* Clone the TCP header template */ 707 /* Clone the TCP header template */
706 inet_sk(newsk)->dport = req->rmt_port; 708 inet_sk(newsk)->dport = ireq->rmt_port;
707 709
708 sock_lock_init(newsk); 710 sock_lock_init(newsk);
709 bh_lock_sock(newsk); 711 bh_lock_sock(newsk);
@@ -739,14 +741,14 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct open_request *req,
739 /* Now setup tcp_sock */ 741 /* Now setup tcp_sock */
740 newtp = tcp_sk(newsk); 742 newtp = tcp_sk(newsk);
741 newtp->pred_flags = 0; 743 newtp->pred_flags = 0;
742 newtp->rcv_nxt = req->rcv_isn + 1; 744 newtp->rcv_nxt = treq->rcv_isn + 1;
743 newtp->snd_nxt = req->snt_isn + 1; 745 newtp->snd_nxt = treq->snt_isn + 1;
744 newtp->snd_una = req->snt_isn + 1; 746 newtp->snd_una = treq->snt_isn + 1;
745 newtp->snd_sml = req->snt_isn + 1; 747 newtp->snd_sml = treq->snt_isn + 1;
746 748
747 tcp_prequeue_init(newtp); 749 tcp_prequeue_init(newtp);
748 750
749 tcp_init_wl(newtp, req->snt_isn, req->rcv_isn); 751 tcp_init_wl(newtp, treq->snt_isn, treq->rcv_isn);
750 752
751 newtp->retransmits = 0; 753 newtp->retransmits = 0;
752 newtp->backoff = 0; 754 newtp->backoff = 0;
@@ -775,10 +777,10 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct open_request *req,
775 tcp_set_ca_state(newtp, TCP_CA_Open); 777 tcp_set_ca_state(newtp, TCP_CA_Open);
776 tcp_init_xmit_timers(newsk); 778 tcp_init_xmit_timers(newsk);
777 skb_queue_head_init(&newtp->out_of_order_queue); 779 skb_queue_head_init(&newtp->out_of_order_queue);
778 newtp->rcv_wup = req->rcv_isn + 1; 780 newtp->rcv_wup = treq->rcv_isn + 1;
779 newtp->write_seq = req->snt_isn + 1; 781 newtp->write_seq = treq->snt_isn + 1;
780 newtp->pushed_seq = newtp->write_seq; 782 newtp->pushed_seq = newtp->write_seq;
781 newtp->copied_seq = req->rcv_isn + 1; 783 newtp->copied_seq = treq->rcv_isn + 1;
782 784
783 newtp->rx_opt.saw_tstamp = 0; 785 newtp->rx_opt.saw_tstamp = 0;
784 786
@@ -808,18 +810,18 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct open_request *req,
808 newsk->sk_socket = NULL; 810 newsk->sk_socket = NULL;
809 newsk->sk_sleep = NULL; 811 newsk->sk_sleep = NULL;
810 812
811 newtp->rx_opt.tstamp_ok = req->tstamp_ok; 813 newtp->rx_opt.tstamp_ok = ireq->tstamp_ok;
812 if((newtp->rx_opt.sack_ok = req->sack_ok) != 0) { 814 if((newtp->rx_opt.sack_ok = ireq->sack_ok) != 0) {
813 if (sysctl_tcp_fack) 815 if (sysctl_tcp_fack)
814 newtp->rx_opt.sack_ok |= 2; 816 newtp->rx_opt.sack_ok |= 2;
815 } 817 }
816 newtp->window_clamp = req->window_clamp; 818 newtp->window_clamp = req->window_clamp;
817 newtp->rcv_ssthresh = req->rcv_wnd; 819 newtp->rcv_ssthresh = req->rcv_wnd;
818 newtp->rcv_wnd = req->rcv_wnd; 820 newtp->rcv_wnd = req->rcv_wnd;
819 newtp->rx_opt.wscale_ok = req->wscale_ok; 821 newtp->rx_opt.wscale_ok = ireq->wscale_ok;
820 if (newtp->rx_opt.wscale_ok) { 822 if (newtp->rx_opt.wscale_ok) {
821 newtp->rx_opt.snd_wscale = req->snd_wscale; 823 newtp->rx_opt.snd_wscale = ireq->snd_wscale;
822 newtp->rx_opt.rcv_wscale = req->rcv_wscale; 824 newtp->rx_opt.rcv_wscale = ireq->rcv_wscale;
823 } else { 825 } else {
824 newtp->rx_opt.snd_wscale = newtp->rx_opt.rcv_wscale = 0; 826 newtp->rx_opt.snd_wscale = newtp->rx_opt.rcv_wscale = 0;
825 newtp->window_clamp = min(newtp->window_clamp, 65535U); 827 newtp->window_clamp = min(newtp->window_clamp, 65535U);
@@ -881,7 +883,7 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
881 } 883 }
882 884
883 /* Check for pure retransmitted SYN. */ 885 /* Check for pure retransmitted SYN. */
884 if (TCP_SKB_CB(skb)->seq == req->rcv_isn && 886 if (TCP_SKB_CB(skb)->seq == tcp_rsk(req)->rcv_isn &&
885 flg == TCP_FLAG_SYN && 887 flg == TCP_FLAG_SYN &&
886 !paws_reject) { 888 !paws_reject) {
887 /* 889 /*
@@ -959,7 +961,7 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
959 * Invalid ACK: reset will be sent by listening socket 961 * Invalid ACK: reset will be sent by listening socket
960 */ 962 */
961 if ((flg & TCP_FLAG_ACK) && 963 if ((flg & TCP_FLAG_ACK) &&
962 (TCP_SKB_CB(skb)->ack_seq != req->snt_isn+1)) 964 (TCP_SKB_CB(skb)->ack_seq != tcp_rsk(req)->snt_isn + 1))
963 return sk; 965 return sk;
964 966
965 /* Also, it would be not so bad idea to check rcv_tsecr, which 967 /* Also, it would be not so bad idea to check rcv_tsecr, which
@@ -970,7 +972,7 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
970 /* RFC793: "first check sequence number". */ 972 /* RFC793: "first check sequence number". */
971 973
972 if (paws_reject || !tcp_in_window(TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq, 974 if (paws_reject || !tcp_in_window(TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq,
973 req->rcv_isn+1, req->rcv_isn+1+req->rcv_wnd)) { 975 tcp_rsk(req)->rcv_isn + 1, tcp_rsk(req)->rcv_isn + 1 + req->rcv_wnd)) {
974 /* Out of window: send ACK and drop. */ 976 /* Out of window: send ACK and drop. */
975 if (!(flg & TCP_FLAG_RST)) 977 if (!(flg & TCP_FLAG_RST))
976 req->class->send_ack(skb, req); 978 req->class->send_ack(skb, req);
@@ -981,12 +983,12 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
981 983
982 /* In sequence, PAWS is OK. */ 984 /* In sequence, PAWS is OK. */
983 985
984 if (tmp_opt.saw_tstamp && !after(TCP_SKB_CB(skb)->seq, req->rcv_isn+1)) 986 if (tmp_opt.saw_tstamp && !after(TCP_SKB_CB(skb)->seq, tcp_rsk(req)->rcv_isn + 1))
985 req->ts_recent = tmp_opt.rcv_tsval; 987 req->ts_recent = tmp_opt.rcv_tsval;
986 988
987 if (TCP_SKB_CB(skb)->seq == req->rcv_isn) { 989 if (TCP_SKB_CB(skb)->seq == tcp_rsk(req)->rcv_isn) {
988 /* Truncate SYN, it is out of window starting 990 /* Truncate SYN, it is out of window starting
989 at req->rcv_isn+1. */ 991 at tcp_rsk(req)->rcv_isn + 1. */
990 flg &= ~TCP_FLAG_SYN; 992 flg &= ~TCP_FLAG_SYN;
991 } 993 }
992 994
@@ -1003,8 +1005,8 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
1003 return NULL; 1005 return NULL;
1004 1006
1005 /* If TCP_DEFER_ACCEPT is set, drop bare ACK. */ 1007 /* If TCP_DEFER_ACCEPT is set, drop bare ACK. */
1006 if (tp->defer_accept && TCP_SKB_CB(skb)->end_seq == req->rcv_isn+1) { 1008 if (tp->defer_accept && TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
1007 req->acked = 1; 1009 inet_rsk(req)->acked = 1;
1008 return NULL; 1010 return NULL;
1009 } 1011 }
1010 1012
@@ -1026,7 +1028,7 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
1026 1028
1027 listen_overflow: 1029 listen_overflow:
1028 if (!sysctl_tcp_abort_on_overflow) { 1030 if (!sysctl_tcp_abort_on_overflow) {
1029 req->acked = 1; 1031 inet_rsk(req)->acked = 1;
1030 return NULL; 1032 return NULL;
1031 } 1033 }
1032 1034