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sys/netinet/tcp_stacks/bbr.c
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| Show First 20 Lines • Show All 9,487 Lines • ▼ Show 20 Lines | bbr_do_fin_wait_1(struct mbuf *m, struct tcphdr *th, struct socket *so, | ||||
| } | } | ||||
| INP_WLOCK_ASSERT(tp->t_inpcb); | INP_WLOCK_ASSERT(tp->t_inpcb); | ||||
| if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | ||||
| return (ret_val); | return (ret_val); | ||||
| } | } | ||||
| /* | /* | ||||
| * If new data are received on a connection after the user processes | * If new data are received on a connection after the user processes | ||||
| * are gone, then RST the other end. | * are gone, then RST the other end. | ||||
| */ | |||||
| if ((so->so_state & SS_NOFDREF) && tlen) { | |||||
| /* | |||||
| * We call a new function now so we might continue and setup | * We call a new function now so we might continue and setup | ||||
| * to reset at all data being ack'd. | * to reset at all data being ack'd. | ||||
| */ | */ | ||||
| if (bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | if ((tp->t_flags & TF_CLOSED) && tlen && | ||||
| bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | |||||
| return (1); | return (1); | ||||
| } | |||||
| /* | /* | ||||
| * If last ACK falls within this segment's sequence numbers, record | * If last ACK falls within this segment's sequence numbers, record | ||||
| * its timestamp. NOTE: 1) That the test incorporates suggestions | * its timestamp. NOTE: 1) That the test incorporates suggestions | ||||
| * from the latest proposal of the tcplw@cray.com list (Braden | * from the latest proposal of the tcplw@cray.com list (Braden | ||||
| * 1993/04/26). 2) That updating only on newer timestamps interferes | * 1993/04/26). 2) That updating only on newer timestamps interferes | ||||
| * with our earlier PAWS tests, so this check should be solely | * with our earlier PAWS tests, so this check should be solely | ||||
| * predicated on the sequence space of this segment. 3) That we | * predicated on the sequence space of this segment. 3) That we | ||||
| * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | ||||
| ▲ Show 20 Lines • Show All 102 Lines • ▼ Show 20 Lines | bbr_do_closing(struct mbuf *m, struct tcphdr *th, struct socket *so, | ||||
| } | } | ||||
| INP_WLOCK_ASSERT(tp->t_inpcb); | INP_WLOCK_ASSERT(tp->t_inpcb); | ||||
| if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | ||||
| return (ret_val); | return (ret_val); | ||||
| } | } | ||||
| /* | /* | ||||
| * If new data are received on a connection after the user processes | * If new data are received on a connection after the user processes | ||||
| * are gone, then RST the other end. | * are gone, then RST the other end. | ||||
| */ | |||||
| if ((so->so_state & SS_NOFDREF) && tlen) { | |||||
| /* | |||||
| * We call a new function now so we might continue and setup | * We call a new function now so we might continue and setup | ||||
| * to reset at all data being ack'd. | * to reset at all data being ack'd. | ||||
| */ | */ | ||||
| if (bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | if ((tp->t_flags & TF_CLOSED) && tlen && | ||||
| bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | |||||
| return (1); | return (1); | ||||
| } | |||||
| /* | /* | ||||
| * If last ACK falls within this segment's sequence numbers, record | * If last ACK falls within this segment's sequence numbers, record | ||||
| * its timestamp. NOTE: 1) That the test incorporates suggestions | * its timestamp. NOTE: 1) That the test incorporates suggestions | ||||
| * from the latest proposal of the tcplw@cray.com list (Braden | * from the latest proposal of the tcplw@cray.com list (Braden | ||||
| * 1993/04/26). 2) That updating only on newer timestamps interferes | * 1993/04/26). 2) That updating only on newer timestamps interferes | ||||
| * with our earlier PAWS tests, so this check should be solely | * with our earlier PAWS tests, so this check should be solely | ||||
| * predicated on the sequence space of this segment. 3) That we | * predicated on the sequence space of this segment. 3) That we | ||||
| * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | ||||
| ▲ Show 20 Lines • Show All 88 Lines • ▼ Show 20 Lines | bbr_do_lastack(struct mbuf *m, struct tcphdr *th, struct socket *so, | ||||
| } | } | ||||
| INP_WLOCK_ASSERT(tp->t_inpcb); | INP_WLOCK_ASSERT(tp->t_inpcb); | ||||
| if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | ||||
| return (ret_val); | return (ret_val); | ||||
| } | } | ||||
| /* | /* | ||||
| * If new data are received on a connection after the user processes | * If new data are received on a connection after the user processes | ||||
| * are gone, then RST the other end. | * are gone, then RST the other end. | ||||
| */ | |||||
| if ((so->so_state & SS_NOFDREF) && tlen) { | |||||
| /* | |||||
| * We call a new function now so we might continue and setup | * We call a new function now so we might continue and setup | ||||
| * to reset at all data being ack'd. | * to reset at all data being ack'd. | ||||
| */ | */ | ||||
| if (bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | if ((tp->t_flags & TF_CLOSED) && tlen && | ||||
| bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | |||||
| return (1); | return (1); | ||||
| } | |||||
| /* | /* | ||||
| * If last ACK falls within this segment's sequence numbers, record | * If last ACK falls within this segment's sequence numbers, record | ||||
| * its timestamp. NOTE: 1) That the test incorporates suggestions | * its timestamp. NOTE: 1) That the test incorporates suggestions | ||||
| * from the latest proposal of the tcplw@cray.com list (Braden | * from the latest proposal of the tcplw@cray.com list (Braden | ||||
| * 1993/04/26). 2) That updating only on newer timestamps interferes | * 1993/04/26). 2) That updating only on newer timestamps interferes | ||||
| * with our earlier PAWS tests, so this check should be solely | * with our earlier PAWS tests, so this check should be solely | ||||
| * predicated on the sequence space of this segment. 3) That we | * predicated on the sequence space of this segment. 3) That we | ||||
| * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | ||||
| ▲ Show 20 Lines • Show All 92 Lines • ▼ Show 20 Lines | bbr_do_fin_wait_2(struct mbuf *m, struct tcphdr *th, struct socket *so, | ||||
| INP_WLOCK_ASSERT(tp->t_inpcb); | INP_WLOCK_ASSERT(tp->t_inpcb); | ||||
| if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | if (ctf_drop_checks(to, m, th, tp, &tlen, &thflags, &drop_hdrlen, &ret_val)) { | ||||
| return (ret_val); | return (ret_val); | ||||
| } | } | ||||
| /* | /* | ||||
| * If new data are received on a connection after the user processes | * If new data are received on a connection after the user processes | ||||
| * are gone, then we may RST the other end depending on the outcome | * are gone, then we may RST the other end depending on the outcome | ||||
| * of bbr_check_data_after_close. | * of bbr_check_data_after_close. | ||||
| */ | |||||
| if ((so->so_state & SS_NOFDREF) && | |||||
| tlen) { | |||||
| /* | |||||
| * We call a new function now so we might continue and setup | * We call a new function now so we might continue and setup | ||||
| * to reset at all data being ack'd. | * to reset at all data being ack'd. | ||||
| */ | */ | ||||
| if (bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | if (tp->t_state > TCPS_CLOSE_WAIT && tlen && | ||||
| bbr_check_data_after_close(m, bbr, tp, &tlen, th, so)) | |||||
| return (1); | return (1); | ||||
| } | |||||
| INP_WLOCK_ASSERT(tp->t_inpcb); | |||||
| /* | /* | ||||
| * If last ACK falls within this segment's sequence numbers, record | * If last ACK falls within this segment's sequence numbers, record | ||||
| * its timestamp. NOTE: 1) That the test incorporates suggestions | * its timestamp. NOTE: 1) That the test incorporates suggestions | ||||
| * from the latest proposal of the tcplw@cray.com list (Braden | * from the latest proposal of the tcplw@cray.com list (Braden | ||||
| * 1993/04/26). 2) That updating only on newer timestamps interferes | * 1993/04/26). 2) That updating only on newer timestamps interferes | ||||
| * with our earlier PAWS tests, so this check should be solely | * with our earlier PAWS tests, so this check should be solely | ||||
| * predicated on the sequence space of this segment. 3) That we | * predicated on the sequence space of this segment. 3) That we | ||||
| * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | * modify the segment boundary check to be Last.ACK.Sent <= SEG.SEQ | ||||
| ▲ Show 20 Lines • Show All 5,034 Lines • Show Last 20 Lines | |||||