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-rw-r--r--os/ip/devip.c2
-rw-r--r--os/ip/ip.h1
-rw-r--r--os/ip/ipifc.c88
-rw-r--r--os/ip/iproute.c2
-rw-r--r--os/ip/ipv6.h14
-rw-r--r--os/ip/tcp.c72
6 files changed, 96 insertions, 83 deletions
diff --git a/os/ip/devip.c b/os/ip/devip.c
index 8564e987..bb37d341 100644
--- a/os/ip/devip.c
+++ b/os/ip/devip.c
@@ -982,7 +982,6 @@ Fsstdannounce(Conv* c, char* argv[], int argc)
case 2:
return setladdrport(c, argv[1], 1);
}
- return nil;
}
/*
@@ -1033,7 +1032,6 @@ Fsstdbind(Conv* c, char* argv[], int argc)
case 2:
return setladdrport(c, argv[1], 0);
}
- return nil;
}
static void
diff --git a/os/ip/ip.h b/os/ip/ip.h
index ca49430a..5d504160 100644
--- a/os/ip/ip.h
+++ b/os/ip/ip.h
@@ -669,5 +669,4 @@ extern Chan* chandial(char*, char*, char*, Chan**);
/*
* global to all of the stack
*/
-extern int debug;
extern void (*igmpreportfn)(Ipifc*, uchar*);
diff --git a/os/ip/ipifc.c b/os/ip/ipifc.c
index 345c7404..a044a57e 100644
--- a/os/ip/ipifc.c
+++ b/os/ip/ipifc.c
@@ -11,11 +11,11 @@
#define DPRINT if(0)print
enum {
- Maxmedia = 32,
- Nself = Maxmedia*5,
- NHASH = (1<<6),
- NCACHE = 256,
- QMAX = 64*1024-1,
+ Maxmedia = 32,
+ Nself = Maxmedia*5,
+ NHASH = (1<<6),
+ NCACHE = 256,
+ QMAX = 64*1024-1,
};
Medium *media[Maxmedia] =
@@ -135,7 +135,7 @@ ipifcbind(Conv *c, char **argv, int argc)
if(argc > 2)
strncpy(ifc->dev, argv[2], sizeof(ifc->dev));
else
- sprint(ifc->dev, "%s%d", m->name, c->x);
+ snprint(ifc->dev, sizeof ifc->dev, "%s%d", m->name, c->x);
ifc->dev[sizeof(ifc->dev)-1] = 0;
/* set up parameters */
@@ -144,15 +144,15 @@ ipifcbind(Conv *c, char **argv, int argc)
ifc->maxtu = ifc->m->maxtu;
if(ifc->m->unbindonclose == 0)
ifc->conv->inuse++;
- ifc->rp.mflag = 0; // default not managed
- ifc->rp.oflag = 0;
- ifc->rp.maxraint = 600000; // millisecs
- ifc->rp.minraint = 200000;
- ifc->rp.linkmtu = 0; // no mtu sent
- ifc->rp.reachtime = 0;
- ifc->rp.rxmitra = 0;
- ifc->rp.ttl = MAXTTL;
- ifc->rp.routerlt = 3*(ifc->rp.maxraint);
+ ifc->rp.mflag = 0; // default not managed
+ ifc->rp.oflag = 0;
+ ifc->rp.maxraint = 600000; // millisecs
+ ifc->rp.minraint = 200000;
+ ifc->rp.linkmtu = 0; // no mtu sent
+ ifc->rp.reachtime = 0;
+ ifc->rp.rxmitra = 0;
+ ifc->rp.ttl = MAXTTL;
+ ifc->rp.routerlt = 3*(ifc->rp.maxraint);
/* any ancillary structures (like routes) no longer pertain */
ifc->ifcid++;
@@ -229,7 +229,7 @@ ipifcstate(Conv *c, char *state, int n)
ifc = (Ipifc*)c->ptcl;
- m = snprint(state, n, sfixedformat,
+ m = snprint(state, n, sfixedformat,
ifc->dev, ifc->maxtu, ifc->sendra6, ifc->recvra6,
ifc->rp.mflag, ifc->rp.oflag, ifc->rp.maxraint,
ifc->rp.minraint, ifc->rp.linkmtu, ifc->rp.reachtime,
@@ -328,7 +328,7 @@ ipifccreate(Conv *c)
ifc->reassemble = 0;
}
-/*
+/*
* called after last close of ipifc data or ctl
* called with c locked, we must unlock
*/
@@ -424,7 +424,7 @@ ipifcadd(Ipifc *ifc, char **argv, int argc, int tentative, Iplifc *lifcp)
/* ignore if this is already a local address for this ifc */
for(lifc = ifc->lifc; lifc; lifc = lifc->next) {
if(ipcmp(lifc->local, ip) == 0) {
- if(lifc->tentative != tentative)
+ if(lifc->tentative != tentative)
lifc->tentative = tentative;
if(lifcp != nil) {
lifc->onlink = lifcp->onlink;
@@ -506,7 +506,7 @@ ipifcadd(Ipifc *ifc, char **argv, int argc, int tentative, Iplifc *lifcp)
addselfcache(f, ifc, lifc, bcast, Rbcast);
addselfcache(f, ifc, lifc, IPv4bcast, Rbcast);
- }
+ }
else {
if(ipcmp(ip, v6loopback) == 0) {
/* add node-local mcast address */
@@ -535,7 +535,7 @@ ipifcadd(Ipifc *ifc, char **argv, int argc, int tentative, Iplifc *lifcp)
out:
wunlock(ifc);
- if(tentative && sendnbrdisc)
+ if(tentative && sendnbrdisc)
icmpns(f, 0, SRC_UNSPEC, ip, TARG_MULTI, ifc->mac);
return nil;
}
@@ -721,29 +721,29 @@ ipifcsetpar6(Ipifc *ifc, char **argv, int argc)
return Ebadarg;
while (argsleft > 1) {
- if(strcmp(argv[i],"recvra")==0)
+ if(strcmp(argv[i],"recvra")==0)
ifc->recvra6 = (atoi(argv[i+1]) != 0);
- else if(strcmp(argv[i],"sendra")==0)
+ else if(strcmp(argv[i],"sendra")==0)
ifc->sendra6 = (atoi(argv[i+1]) != 0);
- else if(strcmp(argv[i],"mflag")==0)
+ else if(strcmp(argv[i],"mflag")==0)
ifc->rp.mflag = (atoi(argv[i+1]) != 0);
- else if(strcmp(argv[i],"oflag")==0)
+ else if(strcmp(argv[i],"oflag")==0)
ifc->rp.oflag = (atoi(argv[i+1]) != 0);
else if(strcmp(argv[i],"maxraint")==0)
ifc->rp.maxraint = atoi(argv[i+1]);
else if(strcmp(argv[i],"minraint")==0)
ifc->rp.minraint = atoi(argv[i+1]);
- else if(strcmp(argv[i],"linkmtu")==0)
+ else if(strcmp(argv[i],"linkmtu")==0)
ifc->rp.linkmtu = atoi(argv[i+1]);
- else if(strcmp(argv[i],"reachtime")==0)
+ else if(strcmp(argv[i],"reachtime")==0)
ifc->rp.reachtime = atoi(argv[i+1]);
- else if(strcmp(argv[i],"rxmitra")==0)
+ else if(strcmp(argv[i],"rxmitra")==0)
ifc->rp.rxmitra = atoi(argv[i+1]);
- else if(strcmp(argv[i],"ttl")==0)
+ else if(strcmp(argv[i],"ttl")==0)
ifc->rp.ttl = atoi(argv[i+1]);
- else if(strcmp(argv[i],"routerlt")==0)
+ else if(strcmp(argv[i],"routerlt")==0)
ifc->rp.routerlt = atoi(argv[i+1]);
- else
+ else
return Ebadarg;
argsleft -= 2;
@@ -778,7 +778,7 @@ ipifcrecvra6(Ipifc *ifc, char **argv, int argc)
int i;
i = 0;
- if(argc > 1)
+ if(argc > 1)
i = atoi(argv[1]);
ifc->recvra6 = (i!=0);
return nil;
@@ -826,7 +826,7 @@ ipifcctl(Conv* c, char**argv, int argc)
return ipifcaddpref6(ifc, argv, argc);
else if(strcmp(argv[0], "setpar6") == 0)
return ipifcsetpar6(ifc, argv, argc);
- else if(strcmp(argv[0], "sendra6") == 0)
+ else if(strcmp(argv[0], "sendra6") == 0)
return ipifcsendra6(ifc, argv, argc);
else if(strcmp(argv[0], "recvra6") == 0)
return ipifcrecvra6(ifc, argv, argc);
@@ -1097,7 +1097,7 @@ ipselftabread(Fs *f, char *cp, ulong offset, int n)
}
int
-iptentative(Fs *f, uchar *addr)
+iptentative(Fs *f, uchar *addr)
{
Ipself *p;
@@ -1210,8 +1210,8 @@ v6addrtype(uchar *addr)
#define v6addrcurr(lifc) (( (lifc)->origint + (lifc)->preflt >= (NOW/10^3) ) || ( (lifc)->preflt == 0xffffffff ))
-void
-findprimaryip6(Fs *f, uchar *local)
+static void
+findprimaryipv6(Fs *f, uchar *local)
{
Conv **cp, **e;
Ipifc *ifc;
@@ -1231,7 +1231,7 @@ findprimaryip6(Fs *f, uchar *local)
ifc = (Ipifc*)(*cp)->ptcl;
for(lifc = ifc->lifc; lifc; lifc = lifc->next){
atypel = v6addrtype(lifc->local);
- if(atypel > atype)
+ if(atypel > atype)
if(v6addrcurr(lifc)) {
ipmove(local, lifc->local);
atype = atypel;
@@ -1243,10 +1243,10 @@ findprimaryip6(Fs *f, uchar *local)
}
/*
- * returns first ip address configured
+ * returns first ip address configured
*/
-void
-findprimaryip(Fs *f, uchar *local)
+static void
+findprimaryipv4(Fs *f, uchar *local)
{
Conv **cp, **e;
Ipifc *ifc;
@@ -1258,7 +1258,7 @@ findprimaryip(Fs *f, uchar *local)
if(*cp == 0)
continue;
ifc = (Ipifc*)(*cp)->ptcl;
- for(lifc = ifc->lifc; lifc; lifc = lifc->next){
+ if((lifc = ifc->lifc) != nil){
ipmove(local, lifc->local);
return;
}
@@ -1329,10 +1329,10 @@ findlocalip(Fs *f, uchar *local, uchar *remote)
switch(version){
case V4:
- findprimaryip(f, local);
+ findprimaryipv4(f, local);
break;
case V6:
- findprimaryip6(f, local);
+ findprimaryipv6(f, local);
break;
default:
panic("findlocalip2: version %d", version);
@@ -1642,7 +1642,7 @@ adddefroute6(Fs *f, uchar *gate, int force)
Route *r;
r = v6lookup(f, v6Unspecified, nil);
- if(r!=nil)
+ if(r!=nil)
if(!(force) && (strcmp(r->tag,"ra")!=0)) // route entries generated
return; // by all other means take
// precedence over router annc
@@ -1705,7 +1705,7 @@ ipifcaddpref6(Ipifc *ifc, char**argv, int argc)
lifc->preflt = preflt;
lifc->origint = origint;
- if(ifc->m->pref2addr!=nil)
+ if(ifc->m->pref2addr!=nil)
ifc->m->pref2addr(prefix, ifc->mac);
else
return Ebadarg;
diff --git a/os/ip/iproute.c b/os/ip/iproute.c
index 3229435e..1888a89c 100644
--- a/os/ip/iproute.c
+++ b/os/ip/iproute.c
@@ -662,7 +662,7 @@ sprintroute(Route *r, Routewalk *rw)
iname = "-";
if(nifc != -1) {
iname = ifbuf;
- sprint(ifbuf, "%d", nifc);
+ snprint(ifbuf, sizeof ifbuf, "%d", nifc);
}
p = seprint(rw->p, rw->e, rformat, addr, mask, gate, t, r->tag, iname);
if(rw->o < 0){
diff --git a/os/ip/ipv6.h b/os/ip/ipv6.h
index 8da63cfd..d0a06cf5 100644
--- a/os/ip/ipv6.h
+++ b/os/ip/ipv6.h
@@ -61,12 +61,12 @@ enum { /* Header Types */
RSVP = 46,
AH = 51,
ESP = 52,
- ICMPv6 = 58,
+ ICMPv6 = 58,
NNH = 59,
DOH = 60,
ISO_IP = 80,
IGRP = 88,
- OSPF = 89,
+ OSPF = 89,
Maxhdrtype = 256,
};
@@ -98,7 +98,7 @@ enum {
// various flags & constants
- v6MINTU = 1280,
+ v6MINTU = 1280,
HOP_LIMIT = 255,
ETHERHDR_LEN = 14,
IPV6HDR_LEN = 40,
@@ -113,7 +113,7 @@ enum {
MTU_OPTION = 5,
SRC_UNSPEC = 0,
- SRC_UNI = 1,
+ SRC_UNI = 1,
TARG_UNI = 2,
TARG_MULTI = 3,
@@ -124,7 +124,7 @@ enum {
// Router constants (all times in milliseconds)
MAX_INITIAL_RTR_ADVERT_INTERVAL = 16000,
- MAX_INITIAL_RTR_ADVERTISEMENTS = 3,
+ MAX_INITIAL_RTR_ADVERTISEMENTS = 3,
MAX_FINAL_RTR_ADVERTISEMENTS = 3,
MIN_DELAY_BETWEEN_RAS = 3000,
MAX_RA_DELAY_TIME = 500,
@@ -140,9 +140,9 @@ enum {
MAX_MULTICAST_SOLICIT = 3,
MAX_UNICAST_SOLICIT = 3,
MAX_ANYCAST_DELAY_TIME = 1000,
- MAX_NEIGHBOR_ADVERTISEMENT = 3,
+ MAX_NEIGHBOR_ADVERTISEMENT = 3,
REACHABLE_TIME = 30000,
- RETRANS_TIMER = 1000,
+ RETRANS_TIMER = 1000,
DELAY_FIRST_PROBE_TIME = 5000,
};
diff --git a/os/ip/tcp.c b/os/ip/tcp.c
index c2bf7274..c6e0a54f 100644
--- a/os/ip/tcp.c
+++ b/os/ip/tcp.c
@@ -54,7 +54,7 @@ enum
TCP_CONNECT = 1, /* Outgoing connection */
SYNACK_RXTIMER = 250, /* ms between SYNACK retransmits */
- TCPREXMTTHRESH = 3, /* dupack threshhold for rxt */
+ TCPREXMTTHRESH = 3, /* dupack threshhold for rxt */
FORCE = 1,
CLONE = 2,
@@ -285,7 +285,7 @@ struct Limbo
};
int tcp_irtt = DEF_RTT; /* Initial guess at round trip time */
-ushort tcp_mss = DEF_MSS; /* Maximum segment size to be sent */
+ushort tcp_mss = DEF_MSS; /* Maximum segment size to be sent */
enum {
/* MIB stats */
@@ -350,7 +350,7 @@ struct Tcppriv
ulong stats[Nstats];
};
-/*
+/*
* Setting tcpporthogdefense to non-zero enables Dong Lin's
* solution to hijacked systems staking out port's as a form
* of DoS attack.
@@ -375,7 +375,7 @@ void tcprcvwin(Conv*);
void tcpacktimer(void*);
void tcpkeepalive(void*);
void tcpsetkacounter(Tcpctl*);
-void tcprxmit(Conv*);
+void tcprxmit(Conv*);
void tcpsettimer(Tcpctl*);
void tcpsynackrtt(Conv*);
void tcpsetscale(Conv*, Tcpctl*, ushort, ushort);
@@ -711,7 +711,7 @@ backoff(int n)
}
void
-localclose(Conv *s, char *reason) /* called with tcb locked */
+localclose(Conv *s, char *reason) /* called with tcb locked */
{
Tcpctl *tcb;
Reseq *rp,*rp1;
@@ -1804,8 +1804,8 @@ update(Conv *s, Tcp *seg)
/*
* update window
*/
- if( seq_gt(seg->ack, tcb->snd.wl2)
- || (tcb->snd.wl2 == seg->ack && seg->wnd > tcb->snd.wnd)){
+ if(seq_gt(seg->ack, tcb->snd.wl2)
+ || (tcb->snd.wl2 == seg->ack && seg->wnd > tcb->snd.wnd)){
tcb->snd.wnd = seg->wnd;
tcb->snd.wl2 = seg->ack;
}
@@ -1821,9 +1821,9 @@ update(Conv *s, Tcp *seg)
return;
}
- /*
+ /*
* any positive ack turns off fast rxt,
- * (should we do new-reno on partial acks?)
+ * (should we do new-reno on partial acks?)
*/
if(!tcb->snd.recovery || seq_ge(seg->ack, tcb->snd.rxt)) {
tcb->snd.dupacks = 0;
@@ -1925,7 +1925,7 @@ tcpiput(Proto *tcp, Ipifc*, Block *bp)
f = tcp->f;
tpriv = tcp->priv;
-
+
tpriv->stats[InSegs]++;
h4 = (Tcp4hdr*)(bp->rp);
@@ -1939,7 +1939,7 @@ tcpiput(Proto *tcp, Ipifc*, Block *bp)
h4->Unused = 0;
hnputs(h4->tcplen, length-TCP4_PKT);
- if(!(bp->flag & Btcpck) && (h4->tcpcksum[0] || h4->tcpcksum[1]) &&
+ if(!(bp->flag & Btcpck) && (h4->tcpcksum[0] || h4->tcpcksum[1]) &&
ptclcsum(bp, TCP4_IPLEN, length-TCP4_IPLEN)) {
tpriv->stats[CsumErrs]++;
tpriv->stats[InErrs]++;
@@ -1978,7 +1978,7 @@ tcpiput(Proto *tcp, Ipifc*, Block *bp)
h6->ploadlen[0] = h6->ploadlen[1] = h6->proto = 0;
h6->ttl = proto;
hnputl(h6->vcf, length);
- if((h6->tcpcksum[0] || h6->tcpcksum[1]) &&
+ if((h6->tcpcksum[0] || h6->tcpcksum[1]) &&
ptclcsum(bp, TCP6_IPLEN, length+TCP6_PHDRSIZE)) {
tpriv->stats[CsumErrs]++;
tpriv->stats[InErrs]++;
@@ -2277,7 +2277,7 @@ reset:
qpassnolim(s->rq, bp);
bp = nil;
- /*
+ /*
* Force an ack every 2 data messages. This is
* a hack for rob to make his home system run
* faster.
@@ -2412,20 +2412,20 @@ tcpoutput(Conv *s)
for(msgs = 0; msgs < 100; msgs++) {
tcb = (Tcpctl*)s->ptcl;
-
+
switch(tcb->state) {
case Listen:
case Closed:
case Finwait2:
return;
}
-
+
/* force an ack when a window has opened up */
if(tcb->rcv.blocked && tcb->rcv.wnd > 0){
tcb->rcv.blocked = 0;
tcb->flags |= FORCE;
}
-
+
sndcnt = qlen(s->wq)+tcb->flgcnt;
sent = tcb->snd.ptr - tcb->snd.una;
@@ -2841,8 +2841,7 @@ int
addreseq(Tcpctl *tcb, Tcppriv *tpriv, Tcp *seg, Block *bp, ushort length)
{
Reseq *rp, *rp1;
- int i;
- static int once;
+ int i, rqlen, qmax;
rp = malloc(sizeof(Reseq));
if(rp == nil){
@@ -2864,9 +2863,9 @@ addreseq(Tcpctl *tcb, Tcppriv *tpriv, Tcp *seg, Block *bp, ushort length)
return 0;
}
- length = 0;
+ rqlen = 0;
for(i = 0;; i++) {
- length += rp1->length;
+ rqlen += rp1->length;
if(rp1->next == nil || seq_lt(seg->seq, rp1->next->seg.seq)) {
rp->next = rp1->next;
rp1->next = rp;
@@ -2876,12 +2875,29 @@ addreseq(Tcpctl *tcb, Tcppriv *tpriv, Tcp *seg, Block *bp, ushort length)
}
rp1 = rp1->next;
}
- if(length > QMAX && once++ == 0){
- print("very long tcp resequence queue: %d\n", length);
- for(rp1 = tcb->reseq, i = 0; i < 10 && rp1 != nil; rp1 = rp1->next, i++)
- print("0x%lux 0x%lux 0x%ux\n", rp1->seg.seq, rp1->seg.ack,
- rp1->seg.flags);
- return -1;
+ qmax = QMAX<<tcb->rcv.scale;
+ if(rqlen > qmax){
+ print("resequence queue > window: %d > %d\n", rqlen, qmax);
+ i = 0;
+ for(rp1 = tcb->reseq; rp1 != nil; rp1 = rp1->next){
+ print("%#lux %#lux %#ux\n", rp1->seg.seq,
+ rp1->seg.ack, rp1->seg.flags);
+ if(i++ > 10){
+ print("...\n");
+ break;
+ }
+ }
+
+ // delete entire reassembly queue; wait for retransmit.
+ // - should we be smarter and only delete the tail?
+ for(rp = tcb->reseq; rp != nil; rp = rp1){
+ rp1 = rp->next;
+ freeblist(rp->bp);
+ free(rp);
+ }
+ tcb->reseq = nil;
+
+ return -1;
}
return 0;
}
@@ -2994,7 +3010,7 @@ tcpadvise(Proto *tcp, Block *bp, char *msg)
v4tov6(source, h4->tcpsrc);
psource = nhgets(h4->tcpsport);
pdest = nhgets(h4->tcpdport);
- }
+ }
else {
ipmove(dest, h6->tcpdst);
ipmove(source, h6->tcpsrc);
@@ -3122,7 +3138,7 @@ tcpsettimer(Tcpctl *tcb)
/* round trip dependency */
x = backoff(tcb->backoff) *
- (tcb->mdev + (tcb->srtt>>LOGAGAIN) + MSPTICK) / MSPTICK;
+ (tcb->mdev + (tcb->srtt>>LOGAGAIN) + MSPTICK) / MSPTICK;
/* bounded twixt 1/2 and 64 seconds */
if(x < 500/MSPTICK)
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-10 06:27:09 +0000