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use m_pulldown not m_pullup2. fix some bugs in IPv6 tcp_trace().
This commit is contained in:
itojun
parent
3a42e73970
commit
24773939e6
@ -1,4 +1,4 @@
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/* $OpenBSD: tcp_debug.c,v 1.14 2003/05/14 01:12:27 jason Exp $ */
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/* $OpenBSD: tcp_debug.c,v 1.15 2003/05/29 00:35:18 itojun Exp $ */
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/* $NetBSD: tcp_debug.c,v 1.10 1996/02/13 23:43:36 christos Exp $ */
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/*
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@ -113,16 +113,16 @@ int tcpconsdebug = 0;
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#endif
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struct tcp_debug tcp_debug[TCP_NDEBUG];
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int tcp_debx;
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int tcp_debx = 0;
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/*
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* Tcp debug routines
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*/
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void
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tcp_trace(act, ostate, tp, headers, req, len)
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tcp_trace(act, ostate, tp, m, req, len)
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short act, ostate;
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struct tcpcb *tp;
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caddr_t headers;
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struct mbuf *m;
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int req;
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int len;
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{
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@ -130,15 +130,27 @@ tcp_trace(act, ostate, tp, headers, req, len)
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tcp_seq seq, ack;
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int flags;
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#endif
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struct tcp_debug *td = &tcp_debug[tcp_debx++];
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struct tcpiphdr *ti = (struct tcpiphdr *)headers;
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caddr_t headers;
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struct tcp_debug *td;
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struct tcpiphdr *ti;
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struct tcphdr *th;
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#ifdef INET6
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struct tcpipv6hdr *ti6 = (struct tcpipv6hdr *)ti;
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#endif
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td = &tcp_debug[tcp_debx++];
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if (tcp_debx == TCP_NDEBUG)
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tcp_debx = 0;
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if (m)
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headers = mtod(m, caddr_t);
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else
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headers = NULL;
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ti = (struct tcpiphdr *)headers;
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#ifdef INET6
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ti6 = (struct tcpipv6hdr *)headers;
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#endif
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td->td_time = iptime();
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td->td_act = act;
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td->td_ostate = ostate;
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@ -150,7 +162,7 @@ tcp_trace(act, ostate, tp, headers, req, len)
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switch (tp->pf) {
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#ifdef INET6
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case PF_INET6:
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if (ti) {
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if (ti6) {
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th = &ti6->ti6_t;
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td->td_ti6 = *ti6;
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} else
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@ -1,4 +1,4 @@
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/* $OpenBSD: tcp_input.c,v 1.127 2003/05/19 02:03:28 dhartmei Exp $ */
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/* $OpenBSD: tcp_input.c,v 1.128 2003/05/29 00:35:18 itojun Exp $ */
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/* $NetBSD: tcp_input.c,v 1.23 1996/02/13 23:43:44 christos Exp $ */
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/*
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@ -101,9 +101,6 @@
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#include <netinet6/in6_var.h>
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#include <netinet6/nd6.h>
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struct tcpiphdr tcp_saveti;
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struct tcpipv6hdr tcp_saveti6;
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/* for the packet header length in the mbuf */
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#define M_PH_LEN(m) (((struct mbuf *)(m))->m_pkthdr.len)
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#define M_V6_LEN(m) (M_PH_LEN(m) - sizeof(struct ip6_hdr))
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@ -111,7 +108,6 @@ struct tcpipv6hdr tcp_saveti6;
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#endif /* INET6 */
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int tcprexmtthresh = 3;
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struct tcpiphdr tcp_saveti;
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int tcptv_keep_init = TCPTV_KEEP_INIT;
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extern u_long sb_max;
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@ -417,7 +413,7 @@ tcp_input(struct mbuf *m, ...)
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u_long tiwin;
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u_int32_t ts_val, ts_ecr;
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int ts_present = 0;
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int iphlen;
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int iphlen, toff;
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va_list ap;
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struct tcphdr *th;
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#ifdef INET6
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@ -431,12 +427,13 @@ tcp_input(struct mbuf *m, ...)
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int error, s;
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#endif /* IPSEC */
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int af;
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struct mbuf *tcp_saveti = NULL;
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#ifdef TCP_ECN
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u_char iptos;
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#endif
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va_start(ap, m);
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iphlen = va_arg(ap, int);
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toff = va_arg(ap, int);
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va_end(ap);
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tcpstat.tcps_rcvtotal++;
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@ -466,101 +463,44 @@ tcp_input(struct mbuf *m, ...)
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switch (af) {
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case AF_INET:
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#ifdef DIAGNOSTIC
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if (iphlen < sizeof(struct ip)) {
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if (toff < sizeof(struct ip)) {
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m_freem(m);
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return;
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}
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#endif /* DIAGNOSTIC */
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if (iphlen > sizeof(struct ip)) {
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#if 0 /*XXX*/
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ip_stripoptions(m, (struct mbuf *)0);
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iphlen = sizeof(struct ip);
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#else
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m_freem(m);
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return;
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#endif
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}
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break;
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#ifdef INET6
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case AF_INET6:
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#ifdef DIAGNOSTIC
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if (iphlen < sizeof(struct ip6_hdr)) {
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m_freem(m);
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return;
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}
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#endif /* DIAGNOSTIC */
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if (iphlen > sizeof(struct ip6_hdr)) {
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#if 0 /*XXX*/
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ipv6_stripoptions(m, iphlen);
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iphlen = sizeof(struct ip6_hdr);
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#else
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m_freem(m);
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return;
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#endif
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}
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break;
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#endif
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default:
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m_freem(m);
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return;
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}
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if (m->m_len < iphlen + sizeof(struct tcphdr)) {
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m = m_pullup2(m, iphlen + sizeof(struct tcphdr));
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if (m == NULL) {
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ip = mtod(m, struct ip *);
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iphlen = sizeof(*ip);
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IP6_EXTHDR_GET(th, struct tcphdr *, m, toff,
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sizeof(struct tcphdr));
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if (th == NULL) {
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tcpstat.tcps_rcvshort++;
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return;
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}
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}
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ip = NULL;
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#ifdef INET6
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ip6 = NULL;
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#endif
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switch (af) {
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case AF_INET:
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{
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struct tcpiphdr *ti;
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ip = mtod(m, struct ip *);
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#if 1
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tlen = m->m_pkthdr.len - iphlen;
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#else
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tlen = ((struct ip *)ti)->ip_len;
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#endif
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ti = mtod(m, struct tcpiphdr *);
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len = m->m_pkthdr.len;
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tlen = len - toff;
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#ifdef TCP_ECN
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/* save ip_tos before clearing it for checksum */
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iptos = ip->ip_tos;
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#endif
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/*
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* Checksum extended TCP header and data.
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*/
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len = sizeof(struct ip) + tlen;
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bzero(ti->ti_x1, sizeof ti->ti_x1);
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ti->ti_len = (u_int16_t)tlen;
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HTONS(ti->ti_len);
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if ((m->m_pkthdr.csum & M_TCP_CSUM_IN_OK) == 0) {
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if (m->m_pkthdr.csum & M_TCP_CSUM_IN_BAD) {
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tcpstat.tcps_inhwcsum++;
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tcpstat.tcps_rcvbadsum++;
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goto drop;
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}
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if ((ti->ti_sum = in_cksum(m, len)) != 0) {
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tcpstat.tcps_rcvbadsum++;
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goto drop;
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}
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} else {
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m->m_pkthdr.csum &= ~M_TCP_CSUM_IN_OK;
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tcpstat.tcps_inhwcsum++;
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}
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break;
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}
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#ifdef INET6
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case AF_INET6:
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#ifdef DIAGNOSTIC
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if (toff < sizeof(struct ip6_hdr)) {
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m_freem(m);
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return;
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}
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#endif /* DIAGNOSTIC */
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ip6 = mtod(m, struct ip6_hdr *);
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tlen = m->m_pkthdr.len - iphlen;
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iphlen = sizeof(*ip6);
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IP6_EXTHDR_GET(th, struct tcphdr *, m, toff,
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sizeof(struct tcphdr));
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if (th == NULL) {
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tcpstat.tcps_rcvshort++;
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return;
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}
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len = m->m_pkthdr.len;
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tlen = len - toff;
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#ifdef TCP_ECN
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iptos = (ntohl(ip6->ip6_flow) >> 20) & 0xff;
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#endif
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@ -585,6 +525,36 @@ tcp_input(struct mbuf *m, ...)
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goto drop;
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}
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break;
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#endif
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default:
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m_freem(m);
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return;
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}
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switch (af) {
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case AF_INET:
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/*
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* Checksum extended TCP header and data.
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*/
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HTONS(ip->ip_len);
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if ((m->m_pkthdr.csum & M_TCP_CSUM_IN_OK) == 0) {
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if (m->m_pkthdr.csum & M_TCP_CSUM_IN_BAD) {
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tcpstat.tcps_inhwcsum++;
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tcpstat.tcps_rcvbadsum++;
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goto drop;
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}
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if (in4_cksum(m, IPPROTO_TCP, toff, tlen) != 0) {
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tcpstat.tcps_rcvbadsum++;
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goto drop;
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}
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} else {
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m->m_pkthdr.csum &= ~M_TCP_CSUM_IN_OK;
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tcpstat.tcps_inhwcsum++;
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}
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break;
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#ifdef INET6
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case AF_INET6:
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/*
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* Checksum extended TCP header and data.
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*/
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@ -597,8 +567,6 @@ tcp_input(struct mbuf *m, ...)
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}
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#endif /* TUBA_INCLUDE */
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th = (struct tcphdr *)(mtod(m, caddr_t) + iphlen);
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/*
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* Check that TCP offset makes sense,
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* pull out TCP options and adjust length. XXX
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@ -610,25 +578,13 @@ tcp_input(struct mbuf *m, ...)
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}
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tlen -= off;
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if (off > sizeof(struct tcphdr)) {
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if (m->m_len < iphlen + off) {
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if ((m = m_pullup2(m, iphlen + off)) == NULL) {
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tcpstat.tcps_rcvshort++;
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return;
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}
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switch (af) {
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case AF_INET:
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ip = mtod(m, struct ip *);
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break;
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#ifdef INET6
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case AF_INET6:
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ip6 = mtod(m, struct ip6_hdr *);
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break;
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#endif
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}
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th = (struct tcphdr *)(mtod(m, caddr_t) + iphlen);
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IP6_EXTHDR_GET(th, struct tcphdr *, m, toff, off);
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if (th == NULL) {
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tcpstat.tcps_rcvshort++;
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return;
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}
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optlen = off - sizeof(struct tcphdr);
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optp = mtod(m, u_int8_t *) + iphlen + sizeof(struct tcphdr);
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optp = mtod(m, u_int8_t *) + toff + sizeof(struct tcphdr);
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/*
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* Do quick retrieval of timestamp options ("options
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* prediction?"). If timestamp is the only option and it's
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@ -716,16 +672,28 @@ findpcb:
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if (so->so_options & (SO_DEBUG|SO_ACCEPTCONN)) {
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if (so->so_options & SO_DEBUG) {
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ostate = tp->t_state;
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switch (af) {
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#ifdef INET6
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case AF_INET6:
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tcp_saveti6 = *(mtod(m, struct tcpipv6hdr *));
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break;
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#endif
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case AF_INET:
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tcp_saveti = *(mtod(m, struct tcpiphdr *));
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break;
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tcp_saveti = NULL;
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MGETHDR(tcp_saveti, M_DONTWAIT, MT_HEADER);
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if (!tcp_saveti)
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goto nosave;
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#ifdef DIAGNOSTIC
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if (iphlen + sizeof(struct tcphdr) > MCLBYTES) {
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printf("cannot save to tcp_saveti\n");
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goto nosave;
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}
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#endif
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if (iphlen + sizeof(struct tcphdr) > MHLEN) {
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MCLGET(tcp_saveti, M_DONTWAIT);
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if ((tcp_saveti->m_flags & M_EXT) == 0) {
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m_freem(tcp_saveti);
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tcp_saveti = NULL;
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goto nosave;
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}
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}
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m_copydata(m, 0, iphlen, mtod(tcp_saveti, caddr_t));
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m_copydata(m, toff, sizeof(struct tcphdr),
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mtod(tcp_saveti, caddr_t) + iphlen);
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nosave:;
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}
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if (so->so_options & SO_ACCEPTCONN) {
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struct socket *so1;
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@ -883,7 +851,7 @@ findpcb:
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tdb = gettdb(tdbi->spi, &tdbi->dst, tdbi->proto);
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} else
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tdb = NULL;
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ipsp_spd_lookup(m, af, iphlen, &error, IPSP_DIRECTION_IN,
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ipsp_spd_lookup(m, af, toff, &error, IPSP_DIRECTION_IN,
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tdb, inp);
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if (error) {
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splx(s);
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@ -1080,7 +1048,7 @@ findpcb:
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if (so->so_state & SS_CANTRCVMORE)
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m_freem(m);
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else {
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m_adj(m, iphlen + off);
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m_adj(m, toff + off);
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sbappendstream(&so->so_rcv, m);
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}
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sorwakeup(so);
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@ -1094,7 +1062,7 @@ findpcb:
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/*
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* Compute mbuf offset to TCP data segment.
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*/
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hdroptlen = iphlen + off;
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hdroptlen = toff + off;
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/*
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* Calculate amount of space in receive window,
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@ -2242,20 +2210,8 @@ dodata: /* XXX */
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break;
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}
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}
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if (so->so_options & SO_DEBUG) {
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switch (tp->pf) {
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#ifdef INET6
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case PF_INET6:
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tcp_trace(TA_INPUT, ostate, tp, (caddr_t) &tcp_saveti6,
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0, tlen);
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break;
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#endif /* INET6 */
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case PF_INET:
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tcp_trace(TA_INPUT, ostate, tp, (caddr_t) &tcp_saveti,
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0, tlen);
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break;
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}
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}
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if (so->so_options & SO_DEBUG)
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tcp_trace(TA_INPUT, ostate, tp, tcp_saveti, 0, tlen);
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/*
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* Return any desired output.
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@ -2263,6 +2219,7 @@ dodata: /* XXX */
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if (needoutput || (tp->t_flags & TF_ACKNOW)) {
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(void) tcp_output(tp);
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}
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m_freem(tcp_saveti);
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return;
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|
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dropafterack:
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@ -2275,6 +2232,7 @@ dropafterack:
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m_freem(m);
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tp->t_flags |= TF_ACKNOW;
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(void) tcp_output(tp);
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m_freem(tcp_saveti);
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return;
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dropwithreset_ratelim:
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@ -2324,27 +2282,17 @@ dropwithreset:
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/* destroy temporarily created socket */
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if (dropsocket)
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(void) soabort(so);
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m_freem(tcp_saveti);
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return;
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drop:
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/*
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* Drop space held by incoming segment and return.
|
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*/
|
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if (tp && (tp->t_inpcb->inp_socket->so_options & SO_DEBUG)) {
|
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switch (tp->pf) {
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#ifdef INET6
|
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case PF_INET6:
|
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tcp_trace(TA_DROP, ostate, tp, (caddr_t) &tcp_saveti6,
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0, tlen);
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break;
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#endif /* INET6 */
|
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case PF_INET:
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tcp_trace(TA_DROP, ostate, tp, (caddr_t) &tcp_saveti,
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0, tlen);
|
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break;
|
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}
|
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}
|
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if (tp && (tp->t_inpcb->inp_socket->so_options & SO_DEBUG))
|
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tcp_trace(TA_DROP, ostate, tp, tcp_saveti, 0, tlen);
|
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|
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m_freem(tcp_saveti);
|
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m_freem(m);
|
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/* destroy temporarily created socket */
|
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if (dropsocket)
|
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|
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@ -1,4 +1,4 @@
|
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/* $OpenBSD: tcp_output.c,v 1.54 2003/01/25 15:27:29 markus Exp $ */
|
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/* $OpenBSD: tcp_output.c,v 1.55 2003/05/29 00:35:18 itojun Exp $ */
|
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/* $NetBSD: tcp_output.c,v 1.16 1997/06/03 16:17:09 kml Exp $ */
|
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|
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/*
|
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@ -1071,9 +1071,20 @@ send:
|
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/*
|
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* Trace.
|
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*/
|
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if (so->so_options & SO_DEBUG)
|
||||
tcp_trace(TA_OUTPUT, tp->t_state, tp, mtod(m, caddr_t), 0,
|
||||
len);
|
||||
if (so->so_options & SO_DEBUG) {
|
||||
/* TCP template does not fill ip version, so fill it in here */
|
||||
struct ip *sip;
|
||||
sip = mtod(m, struct ip *);
|
||||
switch (tp->pf) {
|
||||
case AF_INET:
|
||||
sip->ip_v = 4;
|
||||
break;
|
||||
case AF_INET6:
|
||||
sip->ip_v = 6;
|
||||
break;
|
||||
}
|
||||
tcp_trace(TA_OUTPUT, tp->t_state, tp, m, 0, len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Fill in IP length and desired time to live and
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $OpenBSD: tcp_usrreq.c,v 1.68 2003/02/12 14:41:08 jason Exp $ */
|
||||
/* $OpenBSD: tcp_usrreq.c,v 1.69 2003/05/29 00:35:18 itojun Exp $ */
|
||||
/* $NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $ */
|
||||
|
||||
/*
|
||||
@ -488,7 +488,7 @@ tcp_usrreq(so, req, m, nam, control)
|
||||
panic("tcp_usrreq");
|
||||
}
|
||||
if (tp && (so->so_options & SO_DEBUG))
|
||||
tcp_trace(TA_USER, ostate, tp, (caddr_t)0, req, 0);
|
||||
tcp_trace(TA_USER, ostate, tp, NULL, req, 0);
|
||||
splx(s);
|
||||
return (error);
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $OpenBSD: tcp_var.h,v 1.48 2003/05/26 05:01:55 itojun Exp $ */
|
||||
/* $OpenBSD: tcp_var.h,v 1.49 2003/05/29 00:35:18 itojun Exp $ */
|
||||
/* $NetBSD: tcp_var.h,v 1.17 1996/02/13 23:44:24 christos Exp $ */
|
||||
|
||||
/*
|
||||
@ -424,7 +424,7 @@ void tcp_setpersist(struct tcpcb *);
|
||||
void tcp_slowtimo(void);
|
||||
struct mbuf *
|
||||
tcp_template(struct tcpcb *);
|
||||
void tcp_trace(int, int, struct tcpcb *, caddr_t, int, int);
|
||||
void tcp_trace(int, int, struct tcpcb *, struct mbuf *, int, int);
|
||||
struct tcpcb *
|
||||
tcp_usrclosed(struct tcpcb *);
|
||||
int tcp_sysctl(int *, u_int, void *, size_t *, void *, size_t);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user