diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-03-07 22:39:50 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-03-07 22:39:50 +0100 |
| commit | 4b8f7a2110d80fdad0f09f376dbfd2204e2e8f8e (patch) | |
| tree | de1716025d3e3a5a61967dfe196f8d7299094a06 /sys/src/9/ip/icmp.c | |
| parent | 4885c75526f91ff9eb245b32a63512e2e67b3038 (diff) | |
devip: ignore the evil bit in fragment info field
using ~IP_DF mask to select offset and "more fragments" bits
includes the evil bit 15. so instead define a constant IP_FO
for the fragment offset bits and use (IP_MF|IP_FO). that way
the evil bit gets ignored and doesnt cause any useless calls
to ipreassemble().
Diffstat (limited to 'sys/src/9/ip/icmp.c')
| -rw-r--r-- | sys/src/9/ip/icmp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/src/9/ip/icmp.c b/sys/src/9/ip/icmp.c index 90c289f4b..5a2a810e8 100644 --- a/sys/src/9/ip/icmp.c +++ b/sys/src/9/ip/icmp.c @@ -401,7 +401,7 @@ icmpiput(Proto *icmp, Ipifc*, Block *bp) goto raise; } p = (Icmp *)bp->rp; - if((nhgets(p->frag) & ~(IP_DF|IP_MF)) == 0){ + if((nhgets(p->frag) & IP_FO) == 0){ pr = Fsrcvpcolx(icmp->f, p->proto); if(pr != nil && pr->advise != nil) { (*pr->advise)(pr, bp, msg); |