diff options
Diffstat (limited to 'slirp/tcp_input.c')
| -rw-r--r-- | slirp/tcp_input.c | 43 |
1 files changed, 22 insertions, 21 deletions
diff --git a/slirp/tcp_input.c b/slirp/tcp_input.c index 408875e..f324adb 100644 --- a/slirp/tcp_input.c +++ b/slirp/tcp_input.c @@ -71,7 +71,7 @@ tcp_seq tcp_iss; /* tcp initial send seq # */ #ifdef TCP_ACK_HACK #define TCP_REASS(tp, ti, m, so, flags) {\ if ((ti)->ti_seq == (tp)->rcv_nxt && \ - (tp)->seg_next == (tcpiphdrp_32)(tp) && \ + tcpfrag_list_empty(tp) && \ (tp)->t_state == TCPS_ESTABLISHED) {\ if (ti->ti_flags & TH_PUSH) \ tp->t_flags |= TF_ACKNOW; \ @@ -94,7 +94,7 @@ tcp_seq tcp_iss; /* tcp initial send seq # */ #else #define TCP_REASS(tp, ti, m, so, flags) { \ if ((ti)->ti_seq == (tp)->rcv_nxt && \ - (tp)->seg_next == (tcpiphdrp_32)(tp) && \ + tcpfrag_list_empty(tp) && \ (tp)->t_state == TCPS_ESTABLISHED) { \ tp->t_flags |= TF_DELACK; \ (tp)->rcv_nxt += (ti)->ti_len; \ @@ -134,8 +134,8 @@ tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti, /* * Find a segment which begins after this one does. */ - for (q = (struct tcpiphdr *)tp->seg_next; q != (struct tcpiphdr *)tp; - q = (struct tcpiphdr *)q->ti_next) + for (q = tcpfrag_list_first(tp); !tcpfrag_list_end(q, tp); + q = tcpiphdr_next(q)) if (SEQ_GT(q->ti_seq, ti->ti_seq)) break; @@ -144,9 +144,9 @@ tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti, * our data already. If so, drop the data from the incoming * segment. If it provides all of our data, drop us. */ - if ((struct tcpiphdr *)q->ti_prev != (struct tcpiphdr *)tp) { + if (!tcpfrag_list_end(tcpiphdr_prev(q), tp)) { register int i; - q = (struct tcpiphdr *)q->ti_prev; + q = tcpiphdr_prev(q); /* conversion to int (in i) handles seq wraparound */ i = q->ti_seq + q->ti_len - ti->ti_seq; if (i > 0) { @@ -166,36 +166,36 @@ tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti, ti->ti_len -= i; ti->ti_seq += i; } - q = (struct tcpiphdr *)(q->ti_next); + q = tcpiphdr_next(q); } STAT(tcpstat.tcps_rcvoopack++); STAT(tcpstat.tcps_rcvoobyte += ti->ti_len); - REASS_MBUF(ti) = (mbufp_32) m; /* XXX */ + ti->ti_mbuf = m; /* * While we overlap succeeding segments trim them or, * if they are completely covered, dequeue them. */ - while (q != (struct tcpiphdr *)tp) { + while (!tcpfrag_list_end(q, tp)) { register int i = (ti->ti_seq + ti->ti_len) - q->ti_seq; if (i <= 0) break; if (i < q->ti_len) { q->ti_seq += i; q->ti_len -= i; - m_adj((struct mbuf *) REASS_MBUF(q), i); + m_adj(q->ti_mbuf, i); break; } - q = (struct tcpiphdr *)q->ti_next; - m = (struct mbuf *) REASS_MBUF((struct tcpiphdr *)q->ti_prev); - remque_32((void *)(q->ti_prev)); + q = tcpiphdr_next(q); + m = tcpiphdr_prev(q)->ti_mbuf; + remque(tcpiphdr2qlink(tcpiphdr_prev(q))); m_freem(m); } /* * Stick new segment in its place. */ - insque_32(ti, (void *)(q->ti_prev)); + insque(tcpiphdr2qlink(ti), tcpiphdr2qlink(tcpiphdr_prev(q))); present: /* @@ -204,17 +204,17 @@ present: */ if (!TCPS_HAVEESTABLISHED(tp->t_state)) return (0); - ti = (struct tcpiphdr *) tp->seg_next; - if (ti == (struct tcpiphdr *)tp || ti->ti_seq != tp->rcv_nxt) + ti = tcpfrag_list_first(tp); + if (tcpfrag_list_end(ti, tp) || ti->ti_seq != tp->rcv_nxt) return (0); if (tp->t_state == TCPS_SYN_RECEIVED && ti->ti_len) return (0); do { tp->rcv_nxt += ti->ti_len; flags = ti->ti_flags & TH_FIN; - remque_32(ti); - m = (struct mbuf *) REASS_MBUF(ti); /* XXX */ - ti = (struct tcpiphdr *)ti->ti_next; + remque(tcpiphdr2qlink(ti)); + m = ti->ti_mbuf; + ti = tcpiphdr_next(ti); /* if (so->so_state & SS_FCANTRCVMORE) */ if (so->so_state & SS_FCANTSENDMORE) m_freem(m); @@ -302,7 +302,8 @@ tcp_input(m, iphlen, inso) * Checksum extended TCP header and data. */ tlen = ((struct ip *)ti)->ip_len; - ti->ti_next = ti->ti_prev = 0; + tcpiphdr2qlink(ti)->next = tcpiphdr2qlink(ti)->prev = 0; + memset(&ti->ti_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr)); ti->ti_x1 = 0; ti->ti_len = htons((u_int16_t)tlen); len = sizeof(struct ip ) + tlen; @@ -560,7 +561,7 @@ findso: return; } } else if (ti->ti_ack == tp->snd_una && - tp->seg_next == (tcpiphdrp_32)tp && + tcpfrag_list_empty(tp) && ti->ti_len <= sbspace(&so->so_rcv)) { /* * this is a pure, in-sequence data packet |