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devip: use common code in icmp for handling advise

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This commit is contained in:
cinap_lenrek 2019-03-04 03:09:39 +01:00
parent 827020f686
commit 2af6b08960
1 changed files with 3 additions and 14 deletions
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17
sys/src/9/ip/icmp.c
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@ -394,6 +394,7 @@ icmpiput(Proto *icmp, Ipifc*, Block *bp)
} else
msg = unreachcode[p->code];
Advise:
bp->rp += ICMP_IPSIZE+ICMP_HDRSIZE;
if(BLEN(bp) < MinAdvise){
ipriv->stats[LenErrs]++;
@ -410,20 +411,8 @@ icmpiput(Proto *icmp, Ipifc*, Block *bp)
break;
case TimeExceed:
if(p->code == 0){
snprint(m2, sizeof m2, "ttl exceeded at %V", p->src);
bp->rp += ICMP_IPSIZE+ICMP_HDRSIZE;
if(BLEN(bp) < MinAdvise){
ipriv->stats[LenErrs]++;
goto raise;
}
p = (Icmp *)bp->rp;
pr = Fsrcvpcolx(icmp->f, p->proto);
if(pr != nil && pr->advise != nil) {
(*pr->advise)(pr, bp, m2);
return;
}
bp->rp -= ICMP_IPSIZE+ICMP_HDRSIZE;
snprint(msg = m2, sizeof m2, "ttl exceeded at %V", p->src);
goto Advise;
}
goticmpkt(icmp, bp);
break;