IP4_MAPT_NEXT_MAPT_TCP_UDP,
IP4_MAPT_NEXT_MAPT_ICMP,
IP4_MAPT_NEXT_MAPT_FRAGMENTED,
+ IP4_MAPT_NEXT_ICMP_ERROR,
IP4_MAPT_NEXT_DROP,
IP4_MAPT_N_NEXT
} ip4_mapt_next_t;
typedef enum
{
IP4_MAPT_ICMP_NEXT_IP6_LOOKUP,
+ IP4_MAPT_ICMP_NEXT_IP6_REWRITE,
IP4_MAPT_ICMP_NEXT_IP6_FRAG,
IP4_MAPT_ICMP_NEXT_DROP,
IP4_MAPT_ICMP_N_NEXT
typedef enum
{
IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP,
+ IP4_MAPT_TCP_UDP_NEXT_IP6_REWRITE,
IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG,
IP4_MAPT_TCP_UDP_NEXT_DROP,
IP4_MAPT_TCP_UDP_N_NEXT
typedef enum
{
IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP,
+ IP4_MAPT_FRAGMENTED_NEXT_IP6_REWRITE,
IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG,
IP4_MAPT_FRAGMENTED_NEXT_DROP,
IP4_MAPT_FRAGMENTED_N_NEXT
} icmp_to_icmp6_ctx_t;
static int
-ip4_to_ip6_set_icmp_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *arg)
+ip4_to_ip6_set_icmp_cb (vlib_buffer_t * b, ip4_header_t * ip4,
+ ip6_header_t * ip6, void *arg)
{
icmp_to_icmp6_ctx_t *ctx = arg;
}
static int
-ip4_to_ip6_set_inner_icmp_cb (ip4_header_t * ip4, ip6_header_t * ip6,
- void *arg)
+ip4_to_ip6_set_inner_icmp_cb (vlib_buffer_t * b, ip4_header_t * ip4,
+ ip6_header_t * ip6, void *arg)
{
icmp_to_icmp6_ctx_t *ctx = arg;
+ ip4_address_t old_src, old_dst;
+
+ old_src.as_u32 = ip4->src_address.as_u32;
+ old_dst.as_u32 = ip4->dst_address.as_u32;
//Note that the source address is within the domain
//while the destination address is the one outside the domain
- ip4_map_t_embedded_address (ctx->d, &ip6->dst_address, &ip4->dst_address);
+ ip4_map_t_embedded_address (ctx->d, &ip6->dst_address, &old_dst);
ip6->src_address.as_u64[0] =
- map_get_pfx_net (ctx->d, ip4->src_address.as_u32, ctx->recv_port);
+ map_get_pfx_net (ctx->d, old_src.as_u32, ctx->recv_port);
ip6->src_address.as_u64[1] =
- map_get_sfx_net (ctx->d, ip4->src_address.as_u32, ctx->recv_port);
+ map_get_sfx_net (ctx->d, old_src.as_u32, ctx->recv_port);
return 0;
}
vnet_buffer (p0)->map_t.map_domain_index);
ip40 = vlib_buffer_get_current (p0);
- ctx0.recv_port = ip4_get_port (ip40, 1);
+ ctx0.recv_port = ip4_get_port (ip40, 0);
ctx0.d = d0;
if (ctx0.recv_port == 0)
{
vnet_buffer (p0)->ip_frag.next_index = IP_FRAG_NEXT_IP6_LOOKUP;
next0 = IP4_MAPT_ICMP_NEXT_IP6_FRAG;
}
+ else
+ {
+ next0 = ip4_map_ip6_lookup_bypass (p0, NULL) ?
+ IP4_MAPT_ICMP_NEXT_IP6_REWRITE : next0;
+ }
err0:
if (PREDICT_TRUE (error0 == MAP_ERROR_NONE))
{
IP_FRAG_NEXT_IP6_LOOKUP;
next0 = IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG;
}
+ else
+ {
+ next0 = ip4_map_ip6_lookup_bypass (p0, NULL) ?
+ IP4_MAPT_FRAGMENTED_NEXT_IP6_REWRITE : next0;
+ }
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
IP_FRAG_NEXT_IP6_LOOKUP;
next0 = IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG;
}
+ else
+ {
+ next0 = ip4_map_ip6_lookup_bypass (p0, NULL) ?
+ IP4_MAPT_TCP_UDP_NEXT_IP6_REWRITE : next0;
+ }
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next, pi0,
*next0 = IP4_MAPT_NEXT_MAPT_ICMP;
if (d0->ea_bits_len == 0 && d0->rules)
*dst_port0 = 0;
- else if (((icmp46_header_t *) u8_ptr_add (ip40, sizeof (*ip40)))->code
+ else if (((icmp46_header_t *) u8_ptr_add (ip40, sizeof (*ip40)))->type
== ICMP4_echo_reply
|| ((icmp46_header_t *)
u8_ptr_add (ip40,
- sizeof (*ip40)))->code == ICMP4_echo_request)
+ sizeof (*ip40)))->type == ICMP4_echo_request)
*dst_port0 = l4_dst_port;
}
else
goto exit;
}
+ 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);
+
vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
- dst_port0 = -1;
+ if (PREDICT_FALSE
+ (df0 && !map_main.frag_ignore_df
+ &&
+ ((ip4_len0 +
+ (sizeof (ip6_header_t) - sizeof (ip4_header_t))) >
+ vnet_buffer (p0)->map_t.mtu)))
+ {
+ icmp4_error_set_vnet_buffer (p0, ICMP4_destination_unreachable,
+ ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set,
+ vnet_buffer (p0)->map_t.mtu -
+ (sizeof (ip6_header_t) -
+ sizeof (ip4_header_t)));
+ p0->error = error_node->errors[MAP_ERROR_DF_SET];
+ next0 = IP4_MAPT_NEXT_ICMP_ERROR;
+ goto trace;
+ }
+
ip4_map_t_classify (p0, d0, ip40, ip4_len0, &dst_port0, &error0,
&next0, l4_dst_port);
pheader0->daddr.as_u64[1] =
map_get_sfx_net (d0, ip40->dst_address.as_u32, (u16) dst_port0);
- bool df0 =
- ip40->flags_and_fragment_offset &
- clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT);
-
- if (PREDICT_TRUE (ip4_is_first_fragment (ip40) && df0))
- {
- p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED];
- next0 = IP4_MAPT_NEXT_MAPT_FRAGMENTED;
- goto exit;
- }
-
if (PREDICT_TRUE
(error0 == MAP_ERROR_NONE && next0 != IP4_MAPT_NEXT_MAPT_ICMP))
{
next0 = (error0 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next0;
p0->error = error_node->errors[error0];
-
+ trace:
if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
{
map_add_trace (vm, node, p0, d0 - map_main.domains, dst_port0);
.n_next_nodes = IP4_MAPT_FRAGMENTED_N_NEXT,
.next_nodes = {
[IP4_MAPT_FRAGMENTED_NEXT_IP6_LOOKUP] = "ip6-lookup",
+ [IP4_MAPT_FRAGMENTED_NEXT_IP6_REWRITE] = "ip6-load-balance",
[IP4_MAPT_FRAGMENTED_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME,
[IP4_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop",
},
.n_next_nodes = IP4_MAPT_ICMP_N_NEXT,
.next_nodes = {
[IP4_MAPT_ICMP_NEXT_IP6_LOOKUP] = "ip6-lookup",
+ [IP4_MAPT_ICMP_NEXT_IP6_REWRITE] = "ip6-load-balance",
[IP4_MAPT_ICMP_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME,
[IP4_MAPT_ICMP_NEXT_DROP] = "error-drop",
},
.n_next_nodes = IP4_MAPT_TCP_UDP_N_NEXT,
.next_nodes = {
[IP4_MAPT_TCP_UDP_NEXT_IP6_LOOKUP] = "ip6-lookup",
+ [IP4_MAPT_TCP_UDP_NEXT_IP6_REWRITE] = "ip6-load-balance",
[IP4_MAPT_TCP_UDP_NEXT_IP6_FRAG] = IP6_FRAG_NODE_NAME,
[IP4_MAPT_TCP_UDP_NEXT_DROP] = "error-drop",
},
[IP4_MAPT_NEXT_MAPT_TCP_UDP] = "ip4-map-t-tcp-udp",
[IP4_MAPT_NEXT_MAPT_ICMP] = "ip4-map-t-icmp",
[IP4_MAPT_NEXT_MAPT_FRAGMENTED] = "ip4-map-t-fragmented",
+ [IP4_MAPT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[IP4_MAPT_NEXT_DROP] = "error-drop",
},
};