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-rw-r--r--src/plugins/map/CMakeLists.txt2
-rw-r--r--src/plugins/map/ip4_map.c41
-rw-r--r--src/plugins/map/ip4_map_t.c176
-rw-r--r--src/plugins/map/ip6_map.c26
-rw-r--r--src/plugins/map/ip6_map_t.c375
-rw-r--r--src/plugins/map/map.api5
-rw-r--r--src/plugins/map/map.c138
-rw-r--r--src/plugins/map/map.h116
-rw-r--r--src/plugins/map/map_api.c7
-rw-r--r--src/plugins/map/map_dpo.c130
-rw-r--r--src/plugins/map/map_dpo.h43
11 files changed, 582 insertions, 477 deletions
diff --git a/src/plugins/map/CMakeLists.txt b/src/plugins/map/CMakeLists.txt
index 2d604e6e4d8..2919199c938 100644
--- a/src/plugins/map/CMakeLists.txt
+++ b/src/plugins/map/CMakeLists.txt
@@ -19,7 +19,6 @@ add_vpp_plugin(map
ip6_map_t.c
map_api.c
map.c
- map_dpo.c
lpm.c
API_FILES
@@ -28,6 +27,5 @@ add_vpp_plugin(map
INSTALL_HEADERS
map_all_api_h.h
map_msg_enum.h
- map_dpo.h
map.h
)
diff --git a/src/plugins/map/ip4_map.c b/src/plugins/map/ip4_map.c
index 487b9212681..64da602e838 100644
--- a/src/plugins/map/ip4_map.c
+++ b/src/plugins/map/ip4_map.c
@@ -248,12 +248,12 @@ ip4_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
p1 = vlib_get_buffer (vm, pi1);
ip40 = vlib_buffer_get_current (p0);
ip41 = vlib_buffer_get_current (p1);
- map_domain_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- d0 = ip4_map_get_domain (map_domain_index0);
- map_domain_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX];
- d1 = ip4_map_get_domain (map_domain_index1);
- ASSERT (d0);
- ASSERT (d1);
+ d0 =
+ ip4_map_get_domain (&ip40->dst_address, &map_domain_index0,
+ &error0);
+ d1 =
+ ip4_map_get_domain (&ip41->dst_address, &map_domain_index1,
+ &error1);
/*
* Shared IPv4 address
@@ -417,9 +417,15 @@ ip4_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
p0 = vlib_get_buffer (vm, pi0);
ip40 = vlib_buffer_get_current (p0);
- map_domain_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- d0 = ip4_map_get_domain (map_domain_index0);
- ASSERT (d0);
+
+ d0 =
+ ip4_map_get_domain (&ip40->dst_address, &map_domain_index0,
+ &error0);
+ if (!d0)
+ { /* Guess it wasn't for us */
+ vnet_feature_next (&next0, p0);
+ goto exit;
+ }
/*
* Shared IPv4 address
@@ -495,6 +501,7 @@ ip4_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
}
p0->error = error_node->errors[error0];
+ exit:
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, pi0, next0);
}
@@ -537,7 +544,7 @@ ip4_map_reass (vlib_main_t * vm,
i32 port0 = 0;
ip6_header_t *ip60;
u32 next0 = IP4_MAP_REASS_NEXT_IP6_LOOKUP;
- u32 map_domain_index0;
+ u32 map_domain_index0 = ~0;
u8 cached = 0;
pi0 = to_next[0] = from[0];
@@ -549,8 +556,9 @@ ip4_map_reass (vlib_main_t * vm,
p0 = vlib_get_buffer (vm, pi0);
ip60 = vlib_buffer_get_current (p0);
ip40 = (ip4_header_t *) (ip60 + 1);
- map_domain_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- d0 = ip4_map_get_domain (map_domain_index0);
+ d0 =
+ ip4_map_get_domain (&ip40->dst_address, &map_domain_index0,
+ &error0);
map_ip4_reass_lock ();
map_ip4_reass_t *r = map_ip4_reass_get (ip40->src_address.as_u32,
@@ -698,7 +706,16 @@ static char *map_error_strings[] = {
#undef _
};
+
/* *INDENT-OFF* */
+VNET_FEATURE_INIT (ip4_map_feature, static) =
+{
+ .arc_name = "ip4-unicast",
+ .node_name = "ip4-map",
+ .runs_before =
+ VNET_FEATURES ("ip4-flow-classify"),
+};
+
VLIB_REGISTER_NODE(ip4_map_node) = {
.function = ip4_map,
.name = "ip4-map",
diff --git a/src/plugins/map/ip4_map_t.c b/src/plugins/map/ip4_map_t.c
index 67df6a087b9..21d17d77910 100644
--- a/src/plugins/map/ip4_map_t.c
+++ b/src/plugins/map/ip4_map_t.c
@@ -229,10 +229,44 @@ ip4_map_t_icmp (vlib_main_t * vm,
return frame->n_vectors;
}
-static int
-ip4_to_ip6_set_cb (ip4_header_t * ip4, ip6_header_t * ip6, void *ctx)
+/*
+ * Translate fragmented IPv4 UDP/TCP packet to IPv6.
+ */
+always_inline int
+map_ip4_to_ip6_fragmented (vlib_buffer_t * p,
+ ip4_mapt_pseudo_header_t * pheader)
{
- ip4_mapt_pseudo_header_t *pheader = ctx;
+ ip4_header_t *ip4;
+ ip6_header_t *ip6;
+ ip6_frag_hdr_t *frag;
+
+ ip4 = vlib_buffer_get_current (p);
+ frag = (ip6_frag_hdr_t *) u8_ptr_add (ip4, sizeof (*ip4) - sizeof (*frag));
+ ip6 =
+ (ip6_header_t *) u8_ptr_add (ip4,
+ sizeof (*ip4) - sizeof (*frag) -
+ sizeof (*ip6));
+ vlib_buffer_advance (p, sizeof (*ip4) - sizeof (*ip6) - sizeof (*frag));
+
+ //We know that the protocol was one of ICMP, TCP or UDP
+ //because the first fragment was found and cached
+ frag->next_hdr =
+ (ip4->protocol == IP_PROTOCOL_ICMP) ? IP_PROTOCOL_ICMP6 : ip4->protocol;
+ frag->identification = frag_id_4to6 (ip4->fragment_id);
+ frag->rsv = 0;
+ frag->fragment_offset_and_more =
+ ip6_frag_hdr_offset_and_more (ip4_get_fragment_offset (ip4),
+ clib_net_to_host_u16
+ (ip4->flags_and_fragment_offset) &
+ IP4_HEADER_FLAG_MORE_FRAGMENTS);
+
+ ip6->ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 ((6 << 28) + (ip4->tos << 20));
+ ip6->payload_length =
+ clib_host_to_net_u16 (clib_net_to_host_u16 (ip4->length) -
+ sizeof (*ip4) + sizeof (*frag));
+ ip6->hop_limit = ip4->ttl;
+ ip6->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION;
ip6->dst_address.as_u64[0] = pheader->daddr.as_u64[0];
ip6->dst_address.as_u64[1] = pheader->daddr.as_u64[1];
@@ -277,7 +311,7 @@ ip4_map_t_fragmented (vlib_main_t * vm,
pheader0 = vlib_buffer_get_current (p0);
vlib_buffer_advance (p0, sizeof (*pheader0));
- if (ip4_to_ip6_fragmented (p0, ip4_to_ip6_set_cb, pheader0))
+ if (map_ip4_to_ip6_fragmented (p0, pheader0))
{
p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED];
next0 = IP4_MAPT_FRAGMENTED_NEXT_DROP;
@@ -302,6 +336,110 @@ ip4_map_t_fragmented (vlib_main_t * vm,
return frame->n_vectors;
}
+/*
+ * Translate IPv4 UDP/TCP packet to IPv6.
+ */
+always_inline int
+map_ip4_to_ip6_tcp_udp (vlib_buffer_t * p, ip4_mapt_pseudo_header_t * pheader)
+{
+ map_main_t *mm = &map_main;
+ ip4_header_t *ip4;
+ ip6_header_t *ip6;
+ ip_csum_t csum;
+ u16 *checksum;
+ ip6_frag_hdr_t *frag;
+ u32 frag_id;
+ ip4_address_t old_src, old_dst;
+
+ ip4 = vlib_buffer_get_current (p);
+
+ if (ip4->protocol == IP_PROTOCOL_UDP)
+ {
+ udp_header_t *udp = ip4_next_header (ip4);
+ checksum = &udp->checksum;
+
+ /*
+ * UDP checksum is optional over IPv4 but mandatory for IPv6 We
+ * do not check udp->length sanity but use our safe computed
+ * value instead
+ */
+ if (PREDICT_FALSE (!*checksum))
+ {
+ u16 udp_len = clib_host_to_net_u16 (ip4->length) - sizeof (*ip4);
+ csum = ip_incremental_checksum (0, udp, udp_len);
+ csum = ip_csum_with_carry (csum, clib_host_to_net_u16 (udp_len));
+ csum =
+ ip_csum_with_carry (csum, clib_host_to_net_u16 (IP_PROTOCOL_UDP));
+ csum = ip_csum_with_carry (csum, *((u64 *) (&ip4->src_address)));
+ *checksum = ~ip_csum_fold (csum);
+ }
+ }
+ else
+ {
+ tcp_header_t *tcp = ip4_next_header (ip4);
+ if (mm->tcp_mss > 0)
+ {
+ csum = tcp->checksum;
+ map_mss_clamping (tcp, &csum, mm->tcp_mss);
+ tcp->checksum = ip_csum_fold (csum);
+ }
+ checksum = &tcp->checksum;
+ }
+
+ old_src.as_u32 = ip4->src_address.as_u32;
+ old_dst.as_u32 = ip4->dst_address.as_u32;
+
+ /* Deal with fragmented packets */
+ if (PREDICT_FALSE (ip4->flags_and_fragment_offset &
+ clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS)))
+ {
+ ip6 =
+ (ip6_header_t *) u8_ptr_add (ip4,
+ sizeof (*ip4) - sizeof (*ip6) -
+ sizeof (*frag));
+ frag =
+ (ip6_frag_hdr_t *) u8_ptr_add (ip4, sizeof (*ip4) - sizeof (*frag));
+ frag_id = frag_id_4to6 (ip4->fragment_id);
+ vlib_buffer_advance (p, sizeof (*ip4) - sizeof (*ip6) - sizeof (*frag));
+ }
+ else
+ {
+ ip6 = (ip6_header_t *) (((u8 *) ip4) + sizeof (*ip4) - sizeof (*ip6));
+ vlib_buffer_advance (p, sizeof (*ip4) - sizeof (*ip6));
+ frag = NULL;
+ }
+
+ ip6->ip_version_traffic_class_and_flow_label =
+ clib_host_to_net_u32 ((6 << 28) + (ip4->tos << 20));
+ ip6->payload_length = u16_net_add (ip4->length, -sizeof (*ip4));
+ ip6->hop_limit = ip4->ttl;
+ ip6->protocol = ip4->protocol;
+ if (PREDICT_FALSE (frag != NULL))
+ {
+ frag->next_hdr = ip6->protocol;
+ frag->identification = frag_id;
+ frag->rsv = 0;
+ frag->fragment_offset_and_more = ip6_frag_hdr_offset_and_more (0, 1);
+ ip6->protocol = IP_PROTOCOL_IPV6_FRAGMENTATION;
+ ip6->payload_length = u16_net_add (ip6->payload_length, sizeof (*frag));
+ }
+
+ ip6->dst_address.as_u64[0] = pheader->daddr.as_u64[0];
+ ip6->dst_address.as_u64[1] = pheader->daddr.as_u64[1];
+ ip6->src_address.as_u64[0] = pheader->saddr.as_u64[0];
+ ip6->src_address.as_u64[1] = pheader->saddr.as_u64[1];
+
+ csum = ip_csum_sub_even (*checksum, old_src.as_u32);
+ csum = ip_csum_sub_even (csum, old_dst.as_u32);
+ csum = ip_csum_add_even (csum, ip6->src_address.as_u64[0]);
+ csum = ip_csum_add_even (csum, ip6->src_address.as_u64[1]);
+ csum = ip_csum_add_even (csum, ip6->dst_address.as_u64[0]);
+ csum = ip_csum_add_even (csum, ip6->dst_address.as_u64[1]);
+ *checksum = ip_csum_fold (csum);
+
+ return 0;
+}
+
static uword
ip4_map_t_tcp_udp (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
@@ -338,7 +476,7 @@ ip4_map_t_tcp_udp (vlib_main_t * vm,
pheader0 = vlib_buffer_get_current (p0);
vlib_buffer_advance (p0, sizeof (*pheader0));
- if (ip4_to_ip6_tcp_udp (p0, ip4_to_ip6_set_cb, pheader0))
+ if (map_ip4_to_ip6_tcp_udp (p0, pheader0))
{
p0->error = error_node->errors[MAP_ERROR_UNKNOWN];
next0 = IP4_MAPT_TCP_UDP_NEXT_DROP;
@@ -436,7 +574,7 @@ ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
vlib_buffer_t *p0;
ip4_header_t *ip40;
map_domain_t *d0;
- ip4_mapt_next_t next0;
+ ip4_mapt_next_t next0 = 0;
u16 ip4_len0;
u8 error0;
i32 dst_port0;
@@ -456,12 +594,17 @@ ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
ip40->ip_version_and_header_length != 0x45))
{
error0 = MAP_ERROR_UNKNOWN;
- next0 = IP4_MAPT_NEXT_DROP;
}
- vnet_buffer (p0)->map_t.map_domain_index =
- vnet_buffer (p0)->ip.adj_index[VLIB_TX];
- d0 = ip4_map_get_domain (vnet_buffer (p0)->map_t.map_domain_index);
+ d0 = ip4_map_get_domain (&ip40->dst_address,
+ &vnet_buffer (p0)->map_t.map_domain_index,
+ &error0);
+
+ if (!d0)
+ { /* Guess it wasn't for us */
+ vnet_feature_next (&next0, p0);
+ goto exit;
+ }
vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
@@ -489,9 +632,10 @@ ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
pheader0->daddr.as_u64[1] =
map_get_sfx_net (d0, ip40->dst_address.as_u32, (u16) dst_port0);
- //It is important to cache at this stage because the result might be necessary
- //for packets within the same vector.
- //Actually, this approach even provides some limited out-of-order fragments support
+ // It is important to cache at this stage because the result
+ // might be necessary for packets within the same vector.
+ // Actually, this approach even provides some limited
+ // out-of-order fragments support
if (PREDICT_FALSE
(ip4_is_first_fragment (ip40) && (dst_port0 != -1)
&& (d0->ea_bits_len != 0 || !d0->rules)
@@ -513,6 +657,7 @@ ip4_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
next0 = (error0 != MAP_ERROR_NONE) ? IP4_MAPT_NEXT_DROP : next0;
p0->error = error_node->errors[error0];
+ exit:
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next, pi0,
next0);
@@ -528,6 +673,11 @@ static char *map_t_error_strings[] = {
#undef _
};
+VNET_FEATURE_INIT (ip4_map_t_feature, static) =
+{
+.arc_name = "ip4-unicast",.node_name = "ip4-map-t",.runs_before =
+ VNET_FEATURES ("ip4-flow-classify"),};
+
/* *INDENT-OFF* */
VLIB_REGISTER_NODE(ip4_map_t_fragmented_node) = {
.function = ip4_map_t_fragmented,
diff --git a/src/plugins/map/ip6_map.c b/src/plugins/map/ip6_map.c
index 35b58110876..d9db602bad8 100644
--- a/src/plugins/map/ip6_map.c
+++ b/src/plugins/map/ip6_map.c
@@ -244,8 +244,7 @@ ip6_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
&& clib_net_to_host_u16 (ip60->payload_length) > 20))
{
d0 =
- ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- (ip4_address_t *) & ip40->
+ ip4_map_get_domain ((ip4_address_t *) & ip40->
src_address.as_u32, &map_domain_index0,
&error0);
}
@@ -272,8 +271,7 @@ ip6_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
&& clib_net_to_host_u16 (ip61->payload_length) > 20))
{
d1 =
- ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX],
- (ip4_address_t *) & ip41->
+ ip4_map_get_domain ((ip4_address_t *) & ip41->
src_address.as_u32, &map_domain_index1,
&error1);
}
@@ -455,8 +453,7 @@ ip6_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
&& clib_net_to_host_u16 (ip60->payload_length) > 20))
{
d0 =
- ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- (ip4_address_t *) & ip40->
+ ip4_map_get_domain ((ip4_address_t *) & ip40->
src_address.as_u32, &map_domain_index0,
&error0);
}
@@ -478,7 +475,10 @@ ip6_map (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
}
else
{
- error0 = MAP_ERROR_BAD_PROTOCOL;
+ /* XXX: Move get_domain to ip6_get_domain lookup on source */
+ //error0 = MAP_ERROR_BAD_PROTOCOL;
+ vlib_buffer_advance (p0, -sizeof (ip6_header_t));
+ vnet_feature_next (&next0, p0);
}
if (d0)
@@ -811,7 +811,7 @@ ip6_map_ip6_reass (vlib_main_t * vm,
}
/*
- * ip6_ip4_virt_reass
+ * ip6_map_ip4_reass
*/
static uword
ip6_map_ip4_reass (vlib_main_t * vm,
@@ -858,8 +858,7 @@ ip6_map_ip4_reass (vlib_main_t * vm,
ip60 = ((ip6_header_t *) ip40) - 1;
d0 =
- ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- (ip4_address_t *) & ip40->src_address.as_u32,
+ ip4_map_get_domain ((ip4_address_t *) & ip40->src_address.as_u32,
&map_domain_index0, &error0);
map_ip4_reass_lock ();
@@ -1172,6 +1171,13 @@ static char *map_error_strings[] = {
};
/* *INDENT-OFF* */
+VNET_FEATURE_INIT (ip6_map_feature, static) =
+{
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-map",
+ .runs_before = VNET_FEATURES ("ip6-flow-classify"),
+};
+
VLIB_REGISTER_NODE(ip6_map_node) = {
.function = ip6_map,
.name = "ip6-map",
diff --git a/src/plugins/map/ip6_map_t.c b/src/plugins/map/ip6_map_t.c
index 069d392de09..21d6e10c5ae 100644
--- a/src/plugins/map/ip6_map_t.c
+++ b/src/plugins/map/ip6_map_t.c
@@ -14,9 +14,9 @@
*/
#include "map.h"
-#include <vnet/ip/ip_frag.h>
-#include <vnet/ip/ip6_to_ip4.h>
#include <vnet/ip/ip4_to_ip6.h>
+#include <vnet/ip/ip6_to_ip4.h>
+#include <vnet/ip/ip_frag.h>
typedef enum
{
@@ -57,16 +57,13 @@ ip6_map_fragment_cache (ip6_header_t * ip6, ip6_frag_hdr_t * frag,
{
u32 *ignore = NULL;
map_ip4_reass_lock ();
- map_ip4_reass_t *r = map_ip4_reass_get (map_get_ip4 (&ip6->src_address,
- d->flags),
- ip6_map_t_embedded_address (d,
- &ip6->
- dst_address),
- frag_id_6to4 (frag->identification),
- (ip6->protocol ==
- IP_PROTOCOL_ICMP6) ?
- IP_PROTOCOL_ICMP : ip6->protocol,
- &ignore);
+ map_ip4_reass_t *r =
+ map_ip4_reass_get (map_get_ip4 (&ip6->src_address, d->ip6_src_len),
+ ip6_map_t_embedded_address (d, &ip6->dst_address),
+ frag_id_6to4 (frag->identification),
+ (ip6->protocol ==
+ IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : ip6->protocol,
+ &ignore);
if (r)
r->port = port;
@@ -81,16 +78,13 @@ ip6_map_fragment_get (ip6_header_t * ip6, ip6_frag_hdr_t * frag,
{
u32 *ignore = NULL;
map_ip4_reass_lock ();
- map_ip4_reass_t *r = map_ip4_reass_get (map_get_ip4 (&ip6->src_address,
- d->flags),
- ip6_map_t_embedded_address (d,
- &ip6->
- dst_address),
- frag_id_6to4 (frag->identification),
- (ip6->protocol ==
- IP_PROTOCOL_ICMP6) ?
- IP_PROTOCOL_ICMP : ip6->protocol,
- &ignore);
+ map_ip4_reass_t *r =
+ map_ip4_reass_get (map_get_ip4 (&ip6->src_address, d->ip6_src_len),
+ ip6_map_t_embedded_address (d, &ip6->dst_address),
+ frag_id_6to4 (frag->identification),
+ (ip6->protocol ==
+ IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : ip6->protocol,
+ &ignore);
i32 ret = r ? r->port : -1;
map_ip4_reass_unlock ();
return ret;
@@ -108,8 +102,9 @@ ip6_to_ip4_set_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg)
icmp6_to_icmp_ctx_t *ctx = arg;
u32 ip4_sadr;
- //Security check
- //Note that this prevents an intermediate IPv6 router from answering the request
+ // Security check
+ // Note that this prevents an intermediate IPv6 router from answering
+ // the request.
ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags);
if (ip6->src_address.as_u64[0] !=
map_get_pfx_net (ctx->d, ip4_sadr, ctx->sender_port)
@@ -211,7 +206,7 @@ ip6_map_t_icmp (vlib_main_t * vm,
if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
{
- //Send to fragmentation node if necessary
+ // Send to fragmentation node if necessary
vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
vnet_buffer (p0)->ip_frag.next_index = IP4_FRAG_NEXT_IP4_LOOKUP;
next0 = IP6_MAPT_ICMP_NEXT_IP4_FRAG;
@@ -240,14 +235,53 @@ ip6_map_t_icmp (vlib_main_t * vm,
return frame->n_vectors;
}
-static int
-ip6_to_ip4_set_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *ctx)
+/*
+ * Translate IPv6 fragmented packet to IPv4.
+ */
+always_inline int
+map_ip6_to_ip4_fragmented (vlib_buffer_t * p)
{
- vlib_buffer_t *p = ctx;
+ ip6_header_t *ip6;
+ ip6_frag_hdr_t *frag;
+ ip4_header_t *ip4;
+ u16 frag_id;
+ u8 frag_more;
+ u16 frag_offset;
+ u8 l4_protocol;
+ u16 l4_offset;
+
+ ip6 = vlib_buffer_get_current (p);
+
+ if (ip6_parse
+ (ip6, p->current_length, &l4_protocol, &l4_offset, &frag_offset))
+ return -1;
+
+ frag = (ip6_frag_hdr_t *) u8_ptr_add (ip6, frag_offset);
+ ip4 = (ip4_header_t *) u8_ptr_add (ip6, l4_offset - sizeof (*ip4));
+ vlib_buffer_advance (p, l4_offset - sizeof (*ip4));
+
+ frag_id = frag_id_6to4 (frag->identification);
+ frag_more = ip6_frag_hdr_more (frag);
+ frag_offset = ip6_frag_hdr_offset (frag);
ip4->dst_address.as_u32 = vnet_buffer (p)->map_t.v6.daddr;
ip4->src_address.as_u32 = vnet_buffer (p)->map_t.v6.saddr;
+ ip4->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip4->tos = ip6_translate_tos (ip6);
+ ip4->length =
+ u16_net_add (ip6->payload_length,
+ sizeof (*ip4) - l4_offset + sizeof (*ip6));
+ ip4->fragment_id = frag_id;
+ ip4->flags_and_fragment_offset =
+ clib_host_to_net_u16 (frag_offset |
+ (frag_more ? IP4_HEADER_FLAG_MORE_FRAGMENTS : 0));
+ ip4->ttl = ip6->hop_limit;
+ ip4->protocol =
+ (l4_protocol == IP_PROTOCOL_ICMP6) ? IP_PROTOCOL_ICMP : l4_protocol;
+ ip4->checksum = ip4_header_checksum (ip4);
+
return 0;
}
@@ -281,7 +315,7 @@ ip6_map_t_fragmented (vlib_main_t * vm,
next0 = IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP;
p0 = vlib_get_buffer (vm, pi0);
- if (ip6_to_ip4_fragmented (p0, ip6_to_ip4_set_cb, p0))
+ if (map_ip6_to_ip4_fragmented (p0))
{
p0->error = error_node->errors[MAP_ERROR_FRAGMENT_DROPPED];
next0 = IP6_MAPT_FRAGMENTED_NEXT_DROP;
@@ -290,7 +324,7 @@ ip6_map_t_fragmented (vlib_main_t * vm,
{
if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
{
- //Send to fragmentation node if necessary
+ // Send to fragmentation node if necessary
vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
vnet_buffer (p0)->ip_frag.next_index =
IP4_FRAG_NEXT_IP4_LOOKUP;
@@ -307,6 +341,103 @@ ip6_map_t_fragmented (vlib_main_t * vm,
return frame->n_vectors;
}
+/*
+ * Translate IPv6 UDP/TCP packet to IPv4.
+ */
+always_inline int
+map_ip6_to_ip4_tcp_udp (vlib_buffer_t * p, bool udp_checksum)
+{
+ map_main_t *mm = &map_main;
+ ip6_header_t *ip6;
+ u16 *checksum;
+ ip_csum_t csum = 0;
+ ip4_header_t *ip4;
+ u16 fragment_id;
+ u16 flags;
+ u16 frag_offset;
+ u8 l4_protocol;
+ u16 l4_offset;
+ ip6_address_t old_src, old_dst;
+
+ ip6 = vlib_buffer_get_current (p);
+
+ if (ip6_parse
+ (ip6, p->current_length, &l4_protocol, &l4_offset, &frag_offset))
+ return -1;
+
+ if (l4_protocol == IP_PROTOCOL_TCP)
+ {
+ tcp_header_t *tcp = ip6_next_header (ip6);
+ if (mm->tcp_mss > 0)
+ {
+ csum = tcp->checksum;
+ map_mss_clamping (tcp, &csum, mm->tcp_mss);
+ tcp->checksum = ip_csum_fold (csum);
+ }
+ checksum = &tcp->checksum;
+ }
+ else
+ {
+ udp_header_t *udp = ip6_next_header (ip6);
+ checksum = &udp->checksum;
+ }
+
+ old_src.as_u64[0] = ip6->src_address.as_u64[0];
+ old_src.as_u64[1] = ip6->src_address.as_u64[1];
+ old_dst.as_u64[0] = ip6->dst_address.as_u64[0];
+ old_dst.as_u64[1] = ip6->dst_address.as_u64[1];
+
+ ip4 = (ip4_header_t *) u8_ptr_add (ip6, l4_offset - sizeof (*ip4));
+
+ vlib_buffer_advance (p, l4_offset - sizeof (*ip4));
+
+ if (PREDICT_FALSE (frag_offset))
+ {
+ // Only the first fragment
+ ip6_frag_hdr_t *hdr = (ip6_frag_hdr_t *) u8_ptr_add (ip6, frag_offset);
+ fragment_id = frag_id_6to4 (hdr->identification);
+ flags = clib_host_to_net_u16 (IP4_HEADER_FLAG_MORE_FRAGMENTS);
+ }
+ else
+ {
+ fragment_id = 0;
+ flags = 0;
+ }
+
+ ip4->dst_address.as_u32 = vnet_buffer (p)->map_t.v6.daddr;
+ ip4->src_address.as_u32 = vnet_buffer (p)->map_t.v6.saddr;
+
+ ip4->ip_version_and_header_length =
+ IP4_VERSION_AND_HEADER_LENGTH_NO_OPTIONS;
+ ip4->tos = ip6_translate_tos (ip6);
+ ip4->length =
+ u16_net_add (ip6->payload_length,
+ sizeof (*ip4) + sizeof (*ip6) - l4_offset);
+ ip4->fragment_id = fragment_id;
+ ip4->flags_and_fragment_offset = flags;
+ ip4->ttl = ip6->hop_limit;
+ ip4->protocol = l4_protocol;
+ ip4->checksum = ip4_header_checksum (ip4);
+
+ // UDP checksum is optional over IPv4
+ if (!udp_checksum && l4_protocol == IP_PROTOCOL_UDP)
+ {
+ *checksum = 0;
+ }
+ else
+ {
+ csum = ip_csum_sub_even (*checksum, old_src.as_u64[0]);
+ csum = ip_csum_sub_even (csum, old_src.as_u64[1]);
+ csum = ip_csum_sub_even (csum, old_dst.as_u64[0]);
+ csum = ip_csum_sub_even (csum, old_dst.as_u64[1]);
+ csum = ip_csum_add_even (csum, ip4->dst_address.as_u32);
+ csum = ip_csum_add_even (csum, ip4->src_address.as_u32);
+ *checksum = ip_csum_fold (csum);
+ }
+
+ return 0;
+}
+
static uword
ip6_map_t_tcp_udp (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
@@ -337,7 +468,7 @@ ip6_map_t_tcp_udp (vlib_main_t * vm,
p0 = vlib_get_buffer (vm, pi0);
- if (ip6_to_ip4_tcp_udp (p0, ip6_to_ip4_set_cb, p0, 1))
+ if (map_ip6_to_ip4_tcp_udp (p0, true))
{
p0->error = error_node->errors[MAP_ERROR_UNKNOWN];
next0 = IP6_MAPT_TCP_UDP_NEXT_DROP;
@@ -346,7 +477,7 @@ ip6_map_t_tcp_udp (vlib_main_t * vm,
{
if (vnet_buffer (p0)->map_t.mtu < p0->current_length)
{
- //Send to fragmentation node if necessary
+ // Send to fragmentation node if necessary
vnet_buffer (p0)->ip_frag.mtu = vnet_buffer (p0)->map_t.mtu;
vnet_buffer (p0)->ip_frag.next_index =
IP4_FRAG_NEXT_IP4_LOOKUP;
@@ -386,7 +517,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
ip6_header_t *ip60;
u8 error0;
u32 l4_len0;
- i32 src_port0;
+ i32 map_port0;
map_domain_t *d0;
ip6_frag_hdr_t *frag0;
ip6_mapt_next_t next0 = 0;
@@ -402,50 +533,52 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
p0 = vlib_get_buffer (vm, pi0);
ip60 = vlib_buffer_get_current (p0);
- //Save saddr in a different variable to not overwrite ip.adj_index
- saddr = 0; /* TODO */
- /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
-
- d0 = ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
- (ip4_address_t *) & saddr,
- &vnet_buffer (p0)->map_t.map_domain_index,
- &error0);
-
- saddr = map_get_ip4 (&ip60->src_address, d0->flags);
+ d0 =
+ ip6_map_get_domain (&ip60->dst_address,
+ &vnet_buffer (p0)->map_t.map_domain_index,
+ &error0);
+ if (!d0)
+ { /* Guess it wasn't for us */
+ vnet_feature_next (&next0, p0);
+ goto exit;
+ }
- //FIXME: What if d0 is null
+ saddr = map_get_ip4 (&ip60->src_address, d0->ip6_src_len);
vnet_buffer (p0)->map_t.v6.saddr = saddr;
vnet_buffer (p0)->map_t.v6.daddr =
ip6_map_t_embedded_address (d0, &ip60->dst_address);
vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
- if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length,
- &(vnet_buffer (p0)->map_t.
- v6.l4_protocol),
- &(vnet_buffer (p0)->map_t.
- v6.l4_offset),
- &(vnet_buffer (p0)->map_t.
- v6.frag_offset))))
+ if (PREDICT_FALSE
+ (ip6_parse (ip60, p0->current_length,
+ &(vnet_buffer (p0)->map_t.v6.l4_protocol),
+ &(vnet_buffer (p0)->map_t.v6.l4_offset),
+ &(vnet_buffer (p0)->map_t.v6.frag_offset))))
{
- error0 = MAP_ERROR_MALFORMED;
- next0 = IP6_MAPT_NEXT_DROP;
+ error0 =
+ error0 == MAP_ERROR_NONE ? MAP_ERROR_MALFORMED : error0;
}
- src_port0 = -1;
- l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) +
+ map_port0 = -1;
+ l4_len0 =
+ (u32) clib_net_to_host_u16 (ip60->payload_length) +
sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset;
frag0 =
(ip6_frag_hdr_t *) u8_ptr_add (ip60,
- vnet_buffer (p0)->map_t.
- v6.frag_offset);
-
+ vnet_buffer (p0)->map_t.v6.
+ frag_offset);
- if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
- ip6_frag_hdr_offset (frag0)))
+ if (PREDICT_FALSE
+ (vnet_buffer (p0)->map_t.v6.frag_offset
+ && ip6_frag_hdr_offset (frag0)))
{
- src_port0 = ip6_map_fragment_get (ip60, frag0, d0);
- error0 = (src_port0 != -1) ? error0 : MAP_ERROR_FRAGMENT_MEMORY;
- next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
+ map_port0 = ip6_map_fragment_get (ip60, frag0, d0);
+ if (map_port0 == -1)
+ error0 =
+ error0 ==
+ MAP_ERROR_NONE ? MAP_ERROR_FRAGMENT_MEMORY : error0;
+ else
+ next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
}
else
if (PREDICT_TRUE
@@ -457,7 +590,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
vnet_buffer (p0)->map_t.checksum_offset =
vnet_buffer (p0)->map_t.v6.l4_offset + 16;
next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
- src_port0 =
+ map_port0 =
(i32) *
((u16 *)
u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
@@ -472,7 +605,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
vnet_buffer (p0)->map_t.checksum_offset =
vnet_buffer (p0)->map_t.v6.l4_offset + 6;
next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
- src_port0 =
+ map_port0 =
(i32) *
((u16 *)
u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
@@ -490,9 +623,9 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
ICMP6_echo_reply
|| ((icmp46_header_t *)
u8_ptr_add (ip60,
- vnet_buffer (p0)->map_t.v6.
- l4_offset))->code == ICMP6_echo_request)
- src_port0 =
+ vnet_buffer (p0)->map_t.v6.l4_offset))->
+ code == ICMP6_echo_request)
+ map_port0 =
(i32) *
((u16 *)
u8_ptr_add (ip60,
@@ -500,41 +633,44 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
}
else
{
- //TODO: In case of 1:1 mapping, it might be possible to do something with those packets.
+ // TODO: In case of 1:1 mapping, it might be possible to
+ // do something with those packets.
error0 = MAP_ERROR_BAD_PROTOCOL;
}
- //Security check
- if (PREDICT_FALSE
- ((src_port0 != -1)
- && (ip60->src_address.as_u64[0] !=
- map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr,
- src_port0)
- || ip60->src_address.as_u64[1] != map_get_sfx_net (d0,
- vnet_buffer
- (p0)->map_t.v6.saddr,
- src_port0))))
+ if (PREDICT_FALSE (map_port0 != -1) &&
+ (ip60->src_address.as_u64[0] !=
+ map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr,
+ map_port0)
+ || ip60->src_address.as_u64[1] != map_get_sfx_net (d0,
+ vnet_buffer
+ (p0)->map_t.
+ v6.saddr,
+ map_port0)))
{
- //Security check when src_port0 is not zero (non-first fragment, UDP or TCP)
- error0 = MAP_ERROR_SEC_CHECK;
+ // Security check when map_port0 is not zero (non-first
+ // fragment, UDP or TCP)
+ error0 =
+ error0 == MAP_ERROR_NONE ? MAP_ERROR_SEC_CHECK : error0;
}
- //Fragmented first packet needs to be cached for following packets
- if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
- !ip6_frag_hdr_offset ((ip6_frag_hdr_t *)
- u8_ptr_add (ip60,
- vnet_buffer
- (p0)->map_t.
- v6.frag_offset)))
- && (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
+ // Fragmented first packet needs to be cached for following packets
+ if (PREDICT_FALSE
+ (vnet_buffer (p0)->map_t.v6.frag_offset
+ && !ip6_frag_hdr_offset ((ip6_frag_hdr_t *)
+ u8_ptr_add (ip60,
+ vnet_buffer (p0)->map_t.
+ v6.frag_offset)))
+ && (map_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
&& (error0 == MAP_ERROR_NONE))
{
ip6_map_fragment_cache (ip60,
(ip6_frag_hdr_t *) u8_ptr_add (ip60,
vnet_buffer
- (p0)->map_t.
- v6.frag_offset),
- d0, src_port0);
+ (p0)->
+ map_t.v6.
+ frag_offset),
+ d0, map_port0);
}
if (PREDICT_TRUE
@@ -542,14 +678,15 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
{
vlib_increment_combined_counter (cm + MAP_DOMAIN_COUNTER_RX,
thread_index,
- vnet_buffer (p0)->
- map_t.map_domain_index, 1,
- clib_net_to_host_u16
- (ip60->payload_length));
+ vnet_buffer (p0)->map_t.
+ map_domain_index, 1,
+ clib_net_to_host_u16 (ip60->
+ payload_length));
}
next0 = (error0 != MAP_ERROR_NONE) ? IP6_MAPT_NEXT_DROP : next0;
p0->error = error_node->errors[error0];
+ exit:
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next, pi0,
next0);
@@ -560,7 +697,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
}
static char *map_t_error_strings[] = {
-#define _(sym,string) string,
+#define _(sym, string) string,
foreach_map_error
#undef _
};
@@ -577,10 +714,11 @@ VLIB_REGISTER_NODE(ip6_map_t_fragmented_node) = {
.error_strings = map_t_error_strings,
.n_next_nodes = IP6_MAPT_FRAGMENTED_N_NEXT,
- .next_nodes = {
- [IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP] = "ip4-lookup",
- [IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME,
- [IP6_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop",
+ .next_nodes =
+ {
+ [IP6_MAPT_FRAGMENTED_NEXT_IP4_LOOKUP] = "ip4-lookup",
+ [IP6_MAPT_FRAGMENTED_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME,
+ [IP6_MAPT_FRAGMENTED_NEXT_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
@@ -597,10 +735,11 @@ VLIB_REGISTER_NODE(ip6_map_t_icmp_node) = {
.error_strings = map_t_error_strings,
.n_next_nodes = IP6_MAPT_ICMP_N_NEXT,
- .next_nodes = {
- [IP6_MAPT_ICMP_NEXT_IP4_LOOKUP] = "ip4-lookup",
- [IP6_MAPT_ICMP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME,
- [IP6_MAPT_ICMP_NEXT_DROP] = "error-drop",
+ .next_nodes =
+ {
+ [IP6_MAPT_ICMP_NEXT_IP4_LOOKUP] = "ip4-lookup",
+ [IP6_MAPT_ICMP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME,
+ [IP6_MAPT_ICMP_NEXT_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
@@ -617,15 +756,22 @@ VLIB_REGISTER_NODE(ip6_map_t_tcp_udp_node) = {
.error_strings = map_t_error_strings,
.n_next_nodes = IP6_MAPT_TCP_UDP_N_NEXT,
- .next_nodes = {
- [IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP] = "ip4-lookup",
- [IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME,
- [IP6_MAPT_TCP_UDP_NEXT_DROP] = "error-drop",
+ .next_nodes =
+ {
+ [IP6_MAPT_TCP_UDP_NEXT_IP4_LOOKUP] = "ip4-lookup",
+ [IP6_MAPT_TCP_UDP_NEXT_IP4_FRAG] = IP4_FRAG_NODE_NAME,
+ [IP6_MAPT_TCP_UDP_NEXT_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
/* *INDENT-OFF* */
+VNET_FEATURE_INIT(ip4_map_t_feature, static) = {
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-map-t",
+ .runs_before = VNET_FEATURES("ip6-flow-classify"),
+};
+
VLIB_REGISTER_NODE(ip6_map_t_node) = {
.function = ip6_map_t,
.name = "ip6-map-t",
@@ -637,11 +783,12 @@ VLIB_REGISTER_NODE(ip6_map_t_node) = {
.error_strings = map_t_error_strings,
.n_next_nodes = IP6_MAPT_N_NEXT,
- .next_nodes = {
- [IP6_MAPT_NEXT_MAPT_TCP_UDP] = "ip6-map-t-tcp-udp",
- [IP6_MAPT_NEXT_MAPT_ICMP] = "ip6-map-t-icmp",
- [IP6_MAPT_NEXT_MAPT_FRAGMENTED] = "ip6-map-t-fragmented",
- [IP6_MAPT_NEXT_DROP] = "error-drop",
+ .next_nodes =
+ {
+ [IP6_MAPT_NEXT_MAPT_TCP_UDP] = "ip6-map-t-tcp-udp",
+ [IP6_MAPT_NEXT_MAPT_ICMP] = "ip6-map-t-icmp",
+ [IP6_MAPT_NEXT_MAPT_FRAGMENTED] = "ip6-map-t-fragmented",
+ [IP6_MAPT_NEXT_DROP] = "error-drop",
},
};
/* *INDENT-ON* */
diff --git a/src/plugins/map/map.api b/src/plugins/map/map.api
index 752d1b55d9c..f64fe4ccd0d 100644
--- a/src/plugins/map/map.api
+++ b/src/plugins/map/map.api
@@ -13,7 +13,7 @@
* limitations under the License.
*/
-option version = "2.3.0";
+option version = "3.0.0";
import "vnet/ip/ip_types.api";
@@ -38,8 +38,6 @@ define map_add_domain
u8 ea_bits_len;
u8 psid_offset;
u8 psid_length;
- bool is_translation;
- bool is_rfc6052;
u16 mtu;
};
@@ -108,7 +106,6 @@ define map_domain_details
u8 psid_length;
u8 flags;
u16 mtu;
- bool is_translation;
};
define map_rule_dump
diff --git a/src/plugins/map/map.c b/src/plugins/map/map.c
index 307b7a97cfc..1ce3b6faeec 100644
--- a/src/plugins/map/map.c
+++ b/src/plugins/map/map.c
@@ -18,7 +18,6 @@
#include <vnet/fib/fib_table.h>
#include <vnet/fib/ip6_fib.h>
#include <vnet/adj/adj.h>
-#include <map/map_dpo.h>
#include <vppinfra/crc32.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
@@ -74,30 +73,8 @@ map_create_domain (ip4_address_t * ip4_prefix,
{
u8 suffix_len, suffix_shift;
map_main_t *mm = &map_main;
- dpo_id_t dpo_v4 = DPO_INVALID;
- dpo_id_t dpo_v6 = DPO_INVALID;
map_domain_t *d;
- /* Sanity check on the src prefix length */
- if (flags & MAP_DOMAIN_TRANSLATION)
- {
- if (ip6_src_len != 96 && ip6_src_len != 64)
- {
- clib_warning ("MAP-T only supports prefix lengths of 64 and 96.");
- return -1;
- }
- }
- else
- {
- if (ip6_src_len != 128)
- {
- clib_warning
- ("MAP-E requires a BR address, not a prefix (ip6_src_len should "
- "be 128).");
- return -1;
- }
- }
-
/* How many, and which bits to grab from the IPv4 DA */
if (ip4_prefix_len + ea_bits_len < 32)
{
@@ -145,53 +122,13 @@ map_create_domain (ip4_address_t * ip4_prefix,
d->psid_mask = (1 << d->psid_length) - 1;
d->ea_shift = 64 - ip6_prefix_len - suffix_len - d->psid_length;
- /* MAP data-plane object */
- if (d->flags & MAP_DOMAIN_TRANSLATION)
- map_t_dpo_create (DPO_PROTO_IP4, *map_domain_index, &dpo_v4);
- else
- map_dpo_create (DPO_PROTO_IP4, *map_domain_index, &dpo_v4);
-
- /* Create ip4 route */
- fib_prefix_t pfx = {
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_len = d->ip4_prefix_len,
- .fp_addr = {
- .ip4 = d->ip4_prefix,
- }
- ,
- };
- fib_table_entry_special_dpo_add (0, &pfx,
- FIB_SOURCE_MAP,
- FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v4);
- dpo_reset (&dpo_v4);
+ /* MAP longest match lookup table (input feature / FIB) */
+ mm->ip4_prefix_tbl->add (mm->ip4_prefix_tbl, &d->ip4_prefix,
+ d->ip4_prefix_len, *map_domain_index);
- /*
- * construct a DPO to use the v6 domain
- */
- if (d->flags & MAP_DOMAIN_TRANSLATION)
- map_t_dpo_create (DPO_PROTO_IP6, *map_domain_index, &dpo_v6);
- else
- map_dpo_create (DPO_PROTO_IP6, *map_domain_index, &dpo_v6);
-
- /*
- * Multiple MAP domains may share same source IPv6 TEP. Which is just dandy.
- * We are not tracking the sharing. So a v4 lookup to find the correct
- * domain post decap/trnaslate is always done
- *
- * Create ip6 route. This is a reference counted add. If the prefix
- * already exists and is MAP sourced, it is now MAP source n+1 times
- * and will need to be removed n+1 times.
- */
- fib_prefix_t pfx6 = {
- .fp_proto = FIB_PROTOCOL_IP6,
- .fp_len = d->ip6_src_len,
- .fp_addr.ip6 = d->ip6_src,
- };
-
- fib_table_entry_special_dpo_add (0, &pfx6,
- FIB_SOURCE_MAP,
- FIB_ENTRY_FLAG_EXCLUSIVE, &dpo_v6);
- dpo_reset (&dpo_v6);
+ /* Really needed? Or always use FIB? */
+ mm->ip6_src_prefix_tbl->add (mm->ip6_src_prefix_tbl, &d->ip6_src,
+ d->ip6_src_len, *map_domain_index);
/* Validate packet/byte counters */
map_domain_counter_lock (mm);
@@ -231,26 +168,10 @@ map_delete_domain (u32 map_domain_index)
}
d = pool_elt_at_index (mm->domains, map_domain_index);
-
- fib_prefix_t pfx = {
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_len = d->ip4_prefix_len,
- .fp_addr = {
- .ip4 = d->ip4_prefix,
- }
- ,
- };
- fib_table_entry_special_remove (0, &pfx, FIB_SOURCE_MAP);
-
- fib_prefix_t pfx6 = {
- .fp_proto = FIB_PROTOCOL_IP6,
- .fp_len = d->ip6_src_len,
- .fp_addr = {
- .ip6 = d->ip6_src,
- }
- ,
- };
- fib_table_entry_special_remove (0, &pfx6, FIB_SOURCE_MAP);
+ mm->ip4_prefix_tbl->delete (mm->ip4_prefix_tbl, &d->ip4_prefix,
+ d->ip4_prefix_len);
+ mm->ip6_src_prefix_tbl->delete (mm->ip6_src_prefix_tbl, &d->ip6_src,
+ d->ip6_src_len);
/* Deleting rules */
if (d->rules)
@@ -263,7 +184,7 @@ map_delete_domain (u32 map_domain_index)
int
map_add_del_psid (u32 map_domain_index, u16 psid, ip6_address_t * tep,
- u8 is_add)
+ bool is_add)
{
map_domain_t *d;
map_main_t *mm = &map_main;
@@ -441,7 +362,7 @@ map_fib_unresolve (map_main_pre_resolved_t * pr,
}
void
-map_pre_resolve (ip4_address_t * ip4, ip6_address_t * ip6, int is_del)
+map_pre_resolve (ip4_address_t * ip4, ip6_address_t * ip6, bool is_del)
{
if (ip6 && (ip6->as_u64[0] != 0 || ip6->as_u64[1] != 0))
{
@@ -587,10 +508,6 @@ map_add_domain_command_fn (vlib_main_t * vm,
num_m_args++;
else if (unformat (line_input, "mtu %d", &mtu))
num_m_args++;
- else if (unformat (line_input, "map-t"))
- flags |= MAP_DOMAIN_TRANSLATION;
- else if (unformat (line_input, "rfc6052"))
- flags |= (MAP_DOMAIN_TRANSLATION | MAP_DOMAIN_RFC6052);
else
{
error = clib_error_return (0, "unknown input `%U'",
@@ -714,7 +631,7 @@ map_pre_resolve_command_fn (vlib_main_t * vm,
ip4_address_t ip4nh, *p_v4 = NULL;
ip6_address_t ip6nh, *p_v6 = NULL;
clib_error_t *error = NULL;
- int is_del = 0;
+ bool is_del = false;
clib_memset (&ip4nh, 0, sizeof (ip4nh));
clib_memset (&ip6nh, 0, sizeof (ip6nh));
@@ -731,7 +648,7 @@ map_pre_resolve_command_fn (vlib_main_t * vm,
if (unformat (line_input, "ip6-nh %U", unformat_ip6_address, &ip6nh))
p_v6 = &ip6nh;
else if (unformat (line_input, "del"))
- is_del = 1;
+ is_del = true;
else
{
error = clib_error_return (0, "unknown input `%U'",
@@ -938,12 +855,8 @@ done:
static char *
map_flags_to_string (u32 flags)
{
- if (flags & MAP_DOMAIN_RFC6052)
- return "rfc6052";
if (flags & MAP_DOMAIN_PREFIX)
return "prefix";
- if (flags & MAP_DOMAIN_TRANSLATION)
- return "map-t";
return "";
}
@@ -1070,9 +983,10 @@ show_map_domain_command_fn (vlib_main_t * vm, unformat_input_t * input,
if (map_domain_index == ~0)
{
- /* *INDENT-OFF* */
- pool_foreach(d, mm->domains, ({vlib_cli_output(vm, "%U", format_map_domain, d, counters);}));
- /* *INDENT-ON* */
+ /* *INDENT-OFF* */
+ pool_foreach(d, mm->domains,
+ ({vlib_cli_output(vm, "%U", format_map_domain, d, counters);}));
+ /* *INDENT-ON* */
}
else
{
@@ -2257,6 +2171,9 @@ map_init (vlib_main_t * vm)
{
map_main_t *mm = &map_main;
clib_error_t *error = 0;
+
+ memset (mm, 0, sizeof (*mm));
+
mm->vnet_main = vnet_get_main ();
mm->vlib_main = vm;
@@ -2290,6 +2207,7 @@ map_init (vlib_main_t * vm)
vlib_validate_simple_counter (&mm->icmp_relayed, 0);
vlib_zero_simple_counter (&mm->icmp_relayed, 0);
+ mm->icmp_relayed.stat_segment_name = "/map/icmp-relayed";
/* IP4 virtual reassembly */
mm->ip4_reass_hash_table = 0;
@@ -2326,7 +2244,17 @@ map_init (vlib_main_t * vm)
#ifdef MAP_SKIP_IP6_LOOKUP
fib_node_register_type (FIB_NODE_TYPE_MAP_E, &map_vft);
#endif
- map_dpo_module_init ();
+
+ /* Create empty domain that's used in case of error */
+ map_domain_t *d;
+ pool_get_aligned (mm->domains, d, CLIB_CACHE_LINE_BYTES);
+ memset (d, 0, sizeof (*d));
+ d->ip6_src_len = 64;
+
+ /* LPM lookup tables */
+ mm->ip4_prefix_tbl = lpm_table_init (LPM_TYPE_KEY32);
+ mm->ip6_prefix_tbl = lpm_table_init (LPM_TYPE_KEY128);
+ mm->ip6_src_prefix_tbl = lpm_table_init (LPM_TYPE_KEY128);
error = map_plugin_api_hookup (vm);
diff --git a/src/plugins/map/map.h b/src/plugins/map/map.h
index 5b8aef4e872..2169435bc09 100644
--- a/src/plugins/map/map.h
+++ b/src/plugins/map/map.h
@@ -20,8 +20,8 @@
#include <vnet/fib/fib_types.h>
#include <vnet/fib/ip4_fib.h>
#include <vnet/adj/adj.h>
-#include <map/map_dpo.h>
#include <vnet/dpo/load_balance.h>
+#include "lpm.h"
#define MAP_SKIP_IP6_LOOKUP 1
@@ -39,7 +39,7 @@ int map_create_domain (ip4_address_t * ip4_prefix, u8 ip4_prefix_len,
u32 * map_domain_index, u16 mtu, u8 flags);
int map_delete_domain (u32 map_domain_index);
int map_add_del_psid (u32 map_domain_index, u16 psid, ip6_address_t * tep,
- u8 is_add);
+ bool is_add);
int map_if_enable_disable (bool is_enable, u32 sw_if_index,
bool is_translation);
u8 *format_map_trace (u8 * s, va_list * args);
@@ -47,7 +47,7 @@ u8 *format_map_trace (u8 * s, va_list * args);
int map_param_set_fragmentation (bool inner, bool ignore_df);
int map_param_set_icmp (ip4_address_t * ip4_err_relay_src);
int map_param_set_icmp6 (u8 enable_unreachable);
-void map_pre_resolve (ip4_address_t * ip4, ip6_address_t * ip6, int is_del);
+void map_pre_resolve (ip4_address_t * ip4, ip6_address_t * ip6, bool is_del);
int map_param_set_reassembly (bool is_ipv6, u16 lifetime_ms,
u16 pool_size, u32 buffers, f64 ht_ratio,
u32 * reass, u32 * packets);
@@ -321,6 +321,10 @@ typedef struct {
/* Counters */
u32 ip6_reass_buffered_counter;
+ /* Lookup tables */
+ lpm_t *ip4_prefix_tbl;
+ lpm_t *ip6_prefix_tbl;
+ lpm_t *ip6_src_prefix_tbl;
} map_main_t;
/*
@@ -412,7 +416,7 @@ map_get_sfx (map_domain_t *d, u32 addr, u16 port)
if (d->ip6_prefix_len == 128)
return clib_net_to_host_u64(d->ip6_prefix.as_u64[1]);
- if (d->flags & MAP_DOMAIN_RFC6052)
+ if (d->ip6_src_len == 96)
return (clib_net_to_host_u64(d->ip6_prefix.as_u64[1]) | addr);
/* IPv4 prefix */
@@ -431,62 +435,48 @@ map_get_sfx_net (map_domain_t *d, u32 addr, u16 port)
}
static_always_inline u32
-map_get_ip4 (ip6_address_t *addr, map_domain_flags_e flags)
+map_get_ip4 (ip6_address_t *addr, u16 prefix_len)
{
- if (flags & MAP_DOMAIN_RFC6052)
+ ASSERT(prefix_len == 64 || prefix_len == 96);
+ if (prefix_len == 96)
return clib_host_to_net_u32(clib_net_to_host_u64(addr->as_u64[1]));
else
return clib_host_to_net_u32(clib_net_to_host_u64(addr->as_u64[1]) >> 16);
}
-/*
- * Get the MAP domain from an IPv4 lookup adjacency.
- */
static_always_inline map_domain_t *
-ip4_map_get_domain (u32 mdi)
+ip4_map_get_domain (ip4_address_t *addr, u32 *map_domain_index, u8 *error)
{
map_main_t *mm = &map_main;
+ u32 mdi = mm->ip4_prefix_tbl->lookup(mm->ip4_prefix_tbl, addr, 32);
+ if (mdi == ~0) {
+ *error = MAP_ERROR_NO_DOMAIN;
+ return 0;
+ }
+ *map_domain_index = mdi;
return pool_elt_at_index(mm->domains, mdi);
}
/*
- * Get the MAP domain from an IPv6 lookup adjacency.
- * If the IPv6 address or prefix is not shared, no lookup is required.
- * The IPv4 address is used otherwise.
+ * Get the MAP domain from an IPv6 address.
+ * If the IPv6 address or
+ * prefix is shared the IPv4 address must be used.
*/
static_always_inline map_domain_t *
-ip6_map_get_domain (u32 mdi,
- ip4_address_t *addr,
+ip6_map_get_domain (ip6_address_t *addr,
u32 *map_domain_index,
u8 *error)
{
map_main_t *mm = &map_main;
-
-#ifdef TODO
- /*
- * Disable direct MAP domain lookup on decap, until the security check is updated to verify IPv4 SA.
- * (That's done implicitly when MAP domain is looked up in the IPv4 FIB)
- */
- //#ifdef MAP_NONSHARED_DOMAIN_ENABLED
- //#error "How can you be sure this domain is not shared?"
-#endif
+ u32 mdi = mm->ip6_src_prefix_tbl->lookup(mm->ip6_src_prefix_tbl, addr, 128);
+ if (mdi == ~0) {
+ *error = MAP_ERROR_NO_DOMAIN;
+ return 0;
+ }
*map_domain_index = mdi;
return pool_elt_at_index(mm->domains, mdi);
-
-#ifdef TODO
- u32 lbi = ip4_fib_forwarding_lookup(0, addr);
- const dpo_id_t *dpo = load_balance_get_bucket(lbi, 0);
- if (PREDICT_TRUE(dpo->dpoi_type == map_dpo_type ||
- dpo->dpoi_type == map_t_dpo_type))
- {
- *map_domain_index = dpo->dpoi_index;
- return pool_elt_at_index(mm->domains, *map_domain_index);
- }
- *error = MAP_ERROR_NO_DOMAIN;
- return NULL;
-#endif
}
map_ip4_reass_t *
@@ -551,6 +541,9 @@ int map_ip6_reass_conf_lifetime(u16 lifetime_ms);
int map_ip6_reass_conf_buffers(u32 buffers);
#define MAP_IP6_REASS_CONF_BUFFERS_MAX (0xffffffff)
+/*
+ * Supports prefix of 96 or 64 (with u-octet)
+ */
static_always_inline void
ip4_map_t_embedded_address (map_domain_t *d,
ip6_address_t *ip6, const ip4_address_t *ip4)
@@ -613,6 +606,55 @@ map_send_all_to_node(vlib_main_t *vm, u32 *pi_vector,
}
}
+static_always_inline void
+map_mss_clamping (tcp_header_t * tcp, ip_csum_t * sum, u16 mss_clamping)
+{
+ u8 *data;
+ u8 opt_len, opts_len, kind;
+ u16 mss;
+ u16 mss_value_net = clib_host_to_net_u16(mss_clamping);
+
+ if (!tcp_syn (tcp))
+ return;
+
+ opts_len = (tcp_doff (tcp) << 2) - sizeof (tcp_header_t);
+ data = (u8 *) (tcp + 1);
+ for (; opts_len > 0; opts_len -= opt_len, data += opt_len)
+ {
+ kind = data[0];
+
+ if (kind == TCP_OPTION_EOL)
+ break;
+ else if (kind == TCP_OPTION_NOOP)
+ {
+ opt_len = 1;
+ continue;
+ }
+ else
+ {
+ if (opts_len < 2)
+ return;
+ opt_len = data[1];
+
+ if (opt_len < 2 || opt_len > opts_len)
+ return;
+ }
+
+ if (kind == TCP_OPTION_MSS)
+ {
+ mss = *(u16 *) (data + 2);
+ if (clib_net_to_host_u16 (mss) > mss_clamping)
+ {
+ *sum =
+ ip_csum_update (*sum, mss, mss_value_net, ip4_header_t,
+ length);
+ clib_memcpy (data + 2, &mss_value_net, 2);
+ }
+ return;
+ }
+ }
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/plugins/map/map_api.c b/src/plugins/map/map_api.c
index ac1665e5384..1b8ffc72a6a 100644
--- a/src/plugins/map/map_api.c
+++ b/src/plugins/map/map_api.c
@@ -54,12 +54,6 @@ vl_api_map_add_domain_t_handler (vl_api_map_add_domain_t * mp)
u32 index;
u8 flags = 0;
- if (mp->is_translation)
- flags |= MAP_DOMAIN_TRANSLATION;
-
- if (mp->is_rfc6052)
- flags |= MAP_DOMAIN_RFC6052;
-
rv =
map_create_domain ((ip4_address_t *) & mp->ip4_prefix.prefix,
mp->ip4_prefix.len,
@@ -137,7 +131,6 @@ vl_api_map_domain_dump_t_handler (vl_api_map_domain_dump_t * mp)
rmp->psid_length = d->psid_length;
rmp->flags = d->flags;
rmp->mtu = htons(d->mtu);
- rmp->is_translation = (d->flags & MAP_DOMAIN_TRANSLATION); // Redundant
vl_api_send_msg (reg, (u8 *) rmp);
}));
diff --git a/src/plugins/map/map_dpo.c b/src/plugins/map/map_dpo.c
deleted file mode 100644
index 059a4df0a44..00000000000
--- a/src/plugins/map/map_dpo.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <vnet/ip/ip.h>
-#include <map/map_dpo.h>
-
-/**
- * The register MAP DPO type
- */
-dpo_type_t map_dpo_type;
-dpo_type_t map_t_dpo_type;
-
-void
-map_dpo_create (dpo_proto_t dproto,
- u32 domain_index,
- dpo_id_t *dpo)
-{
- dpo_set(dpo,
- map_dpo_type,
- dproto,
- domain_index);
-}
-
-void
-map_t_dpo_create (dpo_proto_t dproto,
- u32 domain_index,
- dpo_id_t *dpo)
-{
- dpo_set(dpo,
- map_t_dpo_type,
- dproto,
- domain_index);
-}
-
-
-u8*
-format_map_dpo (u8 *s, va_list *args)
-{
- index_t index = va_arg (*args, index_t);
- CLIB_UNUSED(u32 indent) = va_arg (*args, u32);
-
- return (format(s, "map: domain:%d", index));
-}
-
-u8*
-format_map_t_dpo (u8 *s, va_list *args)
-{
- index_t index = va_arg (*args, index_t);
- CLIB_UNUSED(u32 indent) = va_arg (*args, u32);
-
- return (format(s, "map-t: domain:%d", index));
-}
-
-
-static void
-map_dpo_lock (dpo_id_t *dpo)
-{
-}
-
-static void
-map_dpo_unlock (dpo_id_t *dpo)
-{
-}
-
-const static dpo_vft_t md_vft = {
- .dv_lock = map_dpo_lock,
- .dv_unlock = map_dpo_unlock,
- .dv_format = format_map_dpo,
-};
-
-const static char* const map_ip4_nodes[] =
-{
- "ip4-map",
- NULL,
-};
-const static char* const map_ip6_nodes[] =
-{
- "ip6-map",
- NULL,
-};
-
-const static char* const * const map_nodes[DPO_PROTO_NUM] =
-{
- [DPO_PROTO_IP4] = map_ip4_nodes,
- [DPO_PROTO_IP6] = map_ip6_nodes,
- [DPO_PROTO_MPLS] = NULL,
-};
-
-const static dpo_vft_t md_t_vft = {
- .dv_lock = map_dpo_lock,
- .dv_unlock = map_dpo_unlock,
- .dv_format = format_map_t_dpo,
-};
-
-const static char* const map_t_ip4_nodes[] =
-{
- "ip4-map-t",
- NULL,
-};
-const static char* const map_t_ip6_nodes[] =
-{
- "ip6-map-t",
- NULL,
-};
-
-const static char* const * const map_t_nodes[DPO_PROTO_NUM] =
-{
- [DPO_PROTO_IP4] = map_t_ip4_nodes,
- [DPO_PROTO_IP6] = map_t_ip6_nodes,
- [DPO_PROTO_MPLS] = NULL,
-};
-
-void
-map_dpo_module_init (void)
-{
- map_dpo_type = dpo_register_new_type(&md_vft, map_nodes);
- map_t_dpo_type = dpo_register_new_type(&md_t_vft, map_t_nodes);
-}
diff --git a/src/plugins/map/map_dpo.h b/src/plugins/map/map_dpo.h
deleted file mode 100644
index 63bf4787383..00000000000
--- a/src/plugins/map/map_dpo.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef __MAP_DPO_H__
-#define __MAP_DPO_H__
-
-#include <vnet/vnet.h>
-#include <vnet/dpo/dpo.h>
-
-/**
- * A representation of a MAP DPO
- */
-
-extern void map_dpo_create (dpo_proto_t dproto,
- u32 domain_index,
- dpo_id_t *dpo);
-extern void map_t_dpo_create (dpo_proto_t dproto,
- u32 domain_index,
- dpo_id_t *dpo);
-
-extern u8* format_map_dpo(u8 *s, va_list *args);
-
-/*
- * Encapsulation violation for fast data-path access
- */
-extern dpo_type_t map_dpo_type;
-extern dpo_type_t map_t_dpo_type;
-
-extern void map_dpo_module_init(void);
-
-#endif