dst_port0 = -1;
+ if (PREDICT_FALSE (ip40->ttl == 1))
+ {
+ icmp4_error_set_vnet_buffer (p0, ICMP4_time_exceeded,
+ ICMP4_time_exceeded_ttl_exceeded_in_transit,
+ 0);
+ p0->error = error_node->errors[MAP_ERROR_TIME_EXCEEDED];
+ next0 = IP4_MAPT_NEXT_ICMP_ERROR;
+ goto trace;
+ }
+
bool df0 =
ip40->flags_and_fragment_offset &
clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT);
_(FRAGMENT_MALFORMED, "fragment has unexpected format")\
_(FRAGMENT_DROPPED, "dropped cached fragment") \
_(MALFORMED, "malformed packet") \
- _(DF_SET, "can't fragment, DF set")
+ _(DF_SET, "can't fragment, DF set") \
+ _(TIME_EXCEEDED, "time exceeded") \
typedef enum
{
for p in rx:
self.validate(p[1], p4_translated)
- # IPv4 TTL
+ # IPv4 TTL=0
ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0)
p4 = (p_ether / ip4_ttl_expired / payload)
for p in rx:
self.validate(p[1], icmp4_reply)
- '''
- This one is broken, cause it would require hairpinning...
- # IPv4 TTL TTL1
+ # IPv4 TTL=1
ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=1)
p4 = (p_ether / ip4_ttl_expired / payload)
- icmp4_reply = IP(id=0, ttl=254, src=self.pg0.local_ip4,
- dst=self.pg0.remote_ip4) / \
- ICMP(type='time-exceeded', code='ttl-zero-during-transit' ) / \
- IP(src=self.pg0.remote_ip4, dst='192.168.0.1', ttl=0) / payload
+ icmp4_reply = (IP(id=0, ttl=254, src=self.pg0.local_ip4,
+ dst=self.pg0.remote_ip4) /
+ ICMP(type='time-exceeded',
+ code='ttl-zero-during-transit') /
+ IP(src=self.pg0.remote_ip4,
+ dst='192.168.0.1', ttl=1) / payload)
rx = self.send_and_expect(self.pg0, p4*1, self.pg0)
for p in rx:
self.validate(p[1], icmp4_reply)
- '''
# IPv6 Hop limit
ip6_hlim_expired = IPv6(hlim=0, src='2001:db8:1ab::c0a8:1:ab',