|
|
|---|
| 993 |
uint8_t nextHeaderPosition = 0; |
993 |
uint8_t nextHeaderPosition = 0; |
| 994 |
bool isDropped = false; |
994 |
bool isDropped = false; |
| 995 |
|
995 |
|
| 996 |
/* process hop-by-hop extension first if exists */ |
996 |
// check for a malformed hop-by-hop extension |
|
|
997 |
// this is a common case when forging IPv6 raw packets |
| 997 |
if (nextHeader == Ipv6Header::IPV6_EXT_HOP_BY_HOP) |
998 |
if (nextHeader == Ipv6Header::IPV6_EXT_HOP_BY_HOP) |
| 998 |
{ |
999 |
{ |
| 999 |
uint8_t buf[2]; |
1000 |
uint8_t buf; |
| 1000 |
p->CopyData (buf, sizeof(buf)); |
1001 |
p->CopyData (&buf, 1); |
| 1001 |
nextHeader = buf[0]; |
1002 |
if (buf == Ipv6Header::IPV6_EXT_HOP_BY_HOP) |
| 1002 |
nextHeaderPosition = buf[1]; |
1003 |
{ |
| 1003 |
NS_ASSERT_MSG (nextHeader != Ipv6Header::IPV6_EXT_HOP_BY_HOP, "Double Ipv6Header::IPV6_EXT_HOP_BY_HOP in packet, aborting"); |
1004 |
NS_LOG_WARN("Double Ipv6Header::IPV6_EXT_HOP_BY_HOP in packet, dropping packet"); |
| 1004 |
NS_ASSERT_MSG (nextHeaderPosition != 0, "Zero-size IPv6 Option Header, aborting"); |
1005 |
return; |
|
|
1006 |
} |
| 1005 |
} |
1007 |
} |
| 1006 |
|
1008 |
|
| 1007 |
/* process all the extensions found and the layer 4 protocol */ |
1009 |
/* process all the extensions found and the layer 4 protocol */ |