#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
#include <vnet/ipsec/ipsec_io.h>
+#include <vnet/ipsec/ipsec_punt.h>
/* Statistics (not really errors) */
#define foreach_ipsec_if_input_error \
_(RX, "good packets received") \
_(DISABLED, "ipsec packets received on disabled interface") \
-_(NO_TUNNEL, "no matching tunnel")
+_(NO_TUNNEL, "no matching tunnel") \
+_(SPI_0, "SPI 0")
static char *ipsec_if_input_error_strings[] = {
#define _(sym,string) string,
return s;
}
+always_inline u16
+ipsec_ip4_if_no_tunnel (vlib_node_runtime_t * node,
+ vlib_buffer_t * b,
+ const esp_header_t * esp,
+ const ip4_header_t * ip4, u16 offset)
+{
+ if (PREDICT_FALSE (0 == esp->spi))
+ {
+ b->error = node->errors[IPSEC_IF_INPUT_ERROR_SPI_0];
+ b->punt_reason =
+ ipsec_punt_reason[(ip4->protocol == IP_PROTOCOL_UDP ?
+ IPSEC_PUNT_IP4_SPI_UDP_0 : IPSEC_PUNT_IP4_SPI_0)];
+ }
+ else
+ {
+ b->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL];
+ b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP4_NO_SUCH_TUNNEL];
+ }
+ vlib_buffer_advance (b, -offset);
+ return IPSEC_INPUT_NEXT_PUNT;
+}
+
+always_inline u16
+ipsec_ip6_if_no_tunnel (vlib_node_runtime_t * node,
+ vlib_buffer_t * b,
+ const esp_header_t * esp, u16 offset)
+{
+ if (PREDICT_FALSE (0 == esp->spi))
+ {
+ b->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL];
+ b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP6_SPI_0];
+ }
+ else
+ {
+ b->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL];
+ b->punt_reason = ipsec_punt_reason[IPSEC_PUNT_IP6_NO_SUCH_TUNNEL];
+ }
+ vlib_buffer_advance (b, -offset);
+ return (IPSEC_INPUT_NEXT_PUNT);
+}
always_inline uword
-ipsec_if_input_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+ipsec_if_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int is_ip6)
{
ipsec_main_t *im = &ipsec_main;
vnet_main_t *vnm = im->vnet_main;
u32 last_sw_if_index = ~0;
u32 last_tunnel_id = ~0;
- u64 last_key = ~0;
+ ipsec4_tunnel_key_t last_key4;
+ ipsec6_tunnel_key_t last_key6;
vlib_combined_counter_main_t *rx_counter;
vlib_combined_counter_main_t *drop_counter;
+ if (is_ip6)
+ clib_memset (&last_key6, 0xff, sizeof (last_key6));
+ else
+ last_key4.as_u64 = ~0;
+
rx_counter = vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX;
drop_counter = vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_DROP;
while (n_left_from >= 2)
{
u32 sw_if_index0, sw_if_index1;
- ip4_header_t *ip0, *ip1;
+ ip4_header_t *ip40, *ip41;
+ ip6_header_t *ip60, *ip61;
esp_header_t *esp0, *esp1;
u32 len0, len1;
u16 buf_adv0, buf_adv1;
u32 tid0, tid1;
ipsec_tunnel_if_t *t0, *t1;
- u64 key0, key1;
+ ipsec4_tunnel_key_t key40, key41;
+ ipsec6_tunnel_key_t key60, key61;
if (n_left_from >= 4)
{
CLIB_PREFETCH (b[3]->data, CLIB_CACHE_LINE_BYTES, LOAD);
}
- ip0 = (ip4_header_t *) (b[0]->data + vnet_buffer (b[0])->l3_hdr_offset);
- ip1 = (ip4_header_t *) (b[1]->data + vnet_buffer (b[1])->l3_hdr_offset);
+ ip40 =
+ (ip4_header_t *) (b[0]->data + vnet_buffer (b[0])->l3_hdr_offset);
+ ip41 =
+ (ip4_header_t *) (b[1]->data + vnet_buffer (b[1])->l3_hdr_offset);
- /* NAT UDP port 4500 case, don't advance any more */
- if (ip0->protocol == IP_PROTOCOL_UDP)
+ if (is_ip6)
{
- esp0 =
- (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0) +
- sizeof (udp_header_t));
- buf_adv0 = 0;
+ ip60 = (ip6_header_t *) ip40;
+ ip61 = (ip6_header_t *) ip41;
+ esp0 = (esp_header_t *) ((u8 *) ip60 + sizeof (ip6_header_t));
+ esp1 = (esp_header_t *) ((u8 *) ip61 + sizeof (ip6_header_t));
+ buf_adv0 = sizeof (ip6_header_t);
+ buf_adv1 = sizeof (ip6_header_t);
}
else
{
- esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
- buf_adv0 = ip4_header_bytes (ip0);
- }
- if (ip1->protocol == IP_PROTOCOL_UDP)
- {
- esp1 =
- (esp_header_t *) ((u8 *) ip1 + ip4_header_bytes (ip1) +
- sizeof (udp_header_t));
- buf_adv1 = 0;
- }
- else
- {
- esp1 = (esp_header_t *) ((u8 *) ip1 + ip4_header_bytes (ip1));
- buf_adv1 = ip4_header_bytes (ip1);
+ /* NAT UDP port 4500 case, don't advance any more */
+ if (ip40->protocol == IP_PROTOCOL_UDP)
+ {
+ esp0 =
+ (esp_header_t *) ((u8 *) ip40 + ip4_header_bytes (ip40) +
+ sizeof (udp_header_t));
+ buf_adv0 = 0;
+ }
+ else
+ {
+ esp0 = (esp_header_t *) ((u8 *) ip40 + ip4_header_bytes (ip40));
+ buf_adv0 = ip4_header_bytes (ip40);
+ }
+ /* NAT UDP port 4500 case, don't advance any more */
+ if (ip41->protocol == IP_PROTOCOL_UDP)
+ {
+ esp1 =
+ (esp_header_t *) ((u8 *) ip41 + ip4_header_bytes (ip41) +
+ sizeof (udp_header_t));
+ buf_adv1 = 0;
+ }
+ else
+ {
+ esp1 = (esp_header_t *) ((u8 *) ip41 + ip4_header_bytes (ip41));
+ buf_adv1 = ip4_header_bytes (ip41);
+ }
}
vlib_buffer_advance (b[0], buf_adv0);
len0 = vlib_buffer_length_in_chain (vm, b[0]);
len1 = vlib_buffer_length_in_chain (vm, b[1]);
- key0 = (u64) ip0->src_address.as_u32 << 32 | (u64) esp0->spi;
- key1 = (u64) ip1->src_address.as_u32 << 32 | (u64) esp1->spi;
-
- if (key0 == last_key)
+ if (is_ip6)
{
- tid0 = last_tunnel_id;
+ key60.remote_ip = ip60->src_address;
+ key60.spi = esp0->spi;
+
+ if (memcmp (&key60, &last_key6, sizeof (last_key6)) == 0)
+ {
+ tid0 = last_tunnel_id;
+ }
+ else
+ {
+ uword *p =
+ hash_get_mem (im->ipsec6_if_pool_index_by_key, &key60);
+ if (p)
+ {
+ tid0 = p[0];
+ last_tunnel_id = tid0;
+ clib_memcpy_fast (&last_key6, &key60, sizeof (key60));
+ }
+ else
+ {
+ next[0] =
+ ipsec_ip6_if_no_tunnel (node, b[0], esp0, buf_adv0);
+ n_no_tunnel++;
+ goto pkt1;
+ }
+ }
}
- else
+ else /* !is_ip6 */
{
- uword *p = hash_get (im->ipsec_if_pool_index_by_key, key0);
- if (p)
+ key40.remote_ip = ip40->src_address.as_u32;
+ key40.spi = esp0->spi;
+
+ if (key40.as_u64 == last_key4.as_u64)
{
- tid0 = p[0];
- last_tunnel_id = tid0;
- last_key = key0;
+ tid0 = last_tunnel_id;
}
else
{
- n_no_tunnel++;
- next[0] = IPSEC_INPUT_NEXT_DROP;
- goto pkt1;
+ uword *p =
+ hash_get (im->ipsec4_if_pool_index_by_key, key40.as_u64);
+ if (p)
+ {
+ tid0 = p[0];
+ last_tunnel_id = tid0;
+ last_key4.as_u64 = key40.as_u64;
+ }
+ else
+ {
+ next[0] =
+ ipsec_ip4_if_no_tunnel (node, b[0], esp0, ip40, buf_adv0);
+ n_no_tunnel++;
+ goto pkt1;
+ }
}
}
if (PREDICT_TRUE (t0->hw_if_index != ~0))
{
- vnet_buffer (b[0])->ipsec.flags = 0;
sw_if_index0 = t0->sw_if_index;
vnet_buffer (b[0])->sw_if_index[VLIB_RX] = sw_if_index0;
vlib_increment_combined_counter
(drop_counter, thread_index, sw_if_index0, 1, len0);
n_disabled++;
+ b[0]->error = node->errors[IPSEC_IF_INPUT_ERROR_DISABLED];
next[0] = IPSEC_INPUT_NEXT_DROP;
goto pkt1;
}
n_bytes = len0;
}
}
- else
- {
- vnet_buffer (b[0])->ipsec.flags = IPSEC_FLAG_IPSEC_GRE_TUNNEL;
- }
pkt1:
- if (key1 == last_key)
+ if (is_ip6)
{
- tid1 = last_tunnel_id;
+ key61.remote_ip = ip61->src_address;
+ key61.spi = esp1->spi;
+
+ if (memcmp (&key61, &last_key6, sizeof (last_key6)) == 0)
+ {
+ tid1 = last_tunnel_id;
+ }
+ else
+ {
+ uword *p =
+ hash_get_mem (im->ipsec6_if_pool_index_by_key, &key61);
+ if (p)
+ {
+ tid1 = p[0];
+ last_tunnel_id = tid1;
+ clib_memcpy_fast (&last_key6, &key61, sizeof (key61));
+ }
+ else
+ {
+ next[1] =
+ ipsec_ip6_if_no_tunnel (node, b[1], esp1, buf_adv1);
+ n_no_tunnel++;
+ goto trace1;
+ }
+ }
}
- else
+ else /* !is_ip6 */
{
- uword *p = hash_get (im->ipsec_if_pool_index_by_key, key1);
- if (p)
+ key41.remote_ip = ip41->src_address.as_u32;
+ key41.spi = esp1->spi;
+
+ if (key41.as_u64 == last_key4.as_u64)
{
- tid1 = p[0];
- last_tunnel_id = tid1;
- last_key = key1;
+ tid1 = last_tunnel_id;
}
else
{
- n_no_tunnel++;
- next[1] = IPSEC_INPUT_NEXT_DROP;
- goto trace1;
+ uword *p =
+ hash_get (im->ipsec4_if_pool_index_by_key, key41.as_u64);
+ if (p)
+ {
+ tid1 = p[0];
+ last_tunnel_id = tid1;
+ last_key4.as_u64 = key41.as_u64;
+ }
+ else
+ {
+ next[1] =
+ ipsec_ip4_if_no_tunnel (node, b[1], esp1, ip41, buf_adv1);
+ n_no_tunnel++;
+ goto trace1;
+ }
}
}
if (PREDICT_TRUE (t1->hw_if_index != ~0))
{
- vnet_buffer (b[1])->ipsec.flags = 0;
sw_if_index1 = t1->sw_if_index;
vnet_buffer (b[1])->sw_if_index[VLIB_RX] = sw_if_index1;
vlib_increment_combined_counter
(drop_counter, thread_index, sw_if_index1, 1, len1);
n_disabled++;
+ b[1]->error = node->errors[IPSEC_IF_INPUT_ERROR_DISABLED];
next[1] = IPSEC_INPUT_NEXT_DROP;
goto trace1;
}
n_bytes = len1;
}
}
- else
- {
- vnet_buffer (b[1])->ipsec.flags = IPSEC_FLAG_IPSEC_GRE_TUNNEL;
- }
trace1:
- if (is_trace)
+ if (PREDICT_FALSE (is_trace))
{
- if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
ipsec_if_input_trace_t *tr =
vlib_add_trace (vm, node, b[0], sizeof (*tr));
tr->spi = clib_host_to_net_u32 (esp0->spi);
tr->seq = clib_host_to_net_u32 (esp0->seq);
}
- if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED))
+ if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
{
ipsec_if_input_trace_t *tr =
vlib_add_trace (vm, node, b[1], sizeof (*tr));
while (n_left_from > 0)
{
u32 sw_if_index0;
- ip4_header_t *ip0;
+ ip4_header_t *ip40;
+ ip6_header_t *ip60;
esp_header_t *esp0;
u32 len0;
u16 buf_adv0;
u32 tid0;
ipsec_tunnel_if_t *t0;
- u64 key0;
+ ipsec4_tunnel_key_t key40;
+ ipsec6_tunnel_key_t key60;
- ip0 = (ip4_header_t *) (b[0]->data + vnet_buffer (b[0])->l3_hdr_offset);
+ ip40 =
+ (ip4_header_t *) (b[0]->data + vnet_buffer (b[0])->l3_hdr_offset);
- /* NAT UDP port 4500 case, don't advance any more */
- if (ip0->protocol == IP_PROTOCOL_UDP)
+ if (is_ip6)
{
- esp0 =
- (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0) +
- sizeof (udp_header_t));
- buf_adv0 = 0;
+ ip60 = (ip6_header_t *) ip40;
+ esp0 = (esp_header_t *) ((u8 *) ip60 + sizeof (ip6_header_t));
+ buf_adv0 = sizeof (ip6_header_t);
}
else
{
- esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
- buf_adv0 = ip4_header_bytes (ip0);
+ /* NAT UDP port 4500 case, don't advance any more */
+ if (ip40->protocol == IP_PROTOCOL_UDP)
+ {
+ esp0 =
+ (esp_header_t *) ((u8 *) ip40 + ip4_header_bytes (ip40) +
+ sizeof (udp_header_t));
+ buf_adv0 = 0;
+ }
+ else
+ {
+ esp0 = (esp_header_t *) ((u8 *) ip40 + ip4_header_bytes (ip40));
+ buf_adv0 = ip4_header_bytes (ip40);
+ }
}
/* stats for the tunnel include all the data after the IP header
vlib_buffer_advance (b[0], buf_adv0);
len0 = vlib_buffer_length_in_chain (vm, b[0]);
- key0 = (u64) ip0->src_address.as_u32 << 32 | (u64) esp0->spi;
- if (key0 == last_key)
+ if (is_ip6)
{
- tid0 = last_tunnel_id;
+ key60.remote_ip = ip60->src_address;
+ key60.spi = esp0->spi;
+
+ if (memcmp (&key60, &last_key6, sizeof (last_key6)) == 0)
+ {
+ tid0 = last_tunnel_id;
+ }
+ else
+ {
+ uword *p =
+ hash_get_mem (im->ipsec6_if_pool_index_by_key, &key60);
+ if (p)
+ {
+ tid0 = p[0];
+ last_tunnel_id = tid0;
+ clib_memcpy_fast (&last_key6, &key60, sizeof (key60));
+ }
+ else
+ {
+ next[0] =
+ ipsec_ip6_if_no_tunnel (node, b[0], esp0, buf_adv0);
+ n_no_tunnel++;
+ goto trace00;
+ }
+ }
}
- else
+ else /* !is_ip6 */
{
- uword *p = hash_get (im->ipsec_if_pool_index_by_key, key0);
- if (p)
+ key40.remote_ip = ip40->src_address.as_u32;
+ key40.spi = esp0->spi;
+
+ if (key40.as_u64 == last_key4.as_u64)
{
- tid0 = p[0];
- last_tunnel_id = tid0;
- last_key = key0;
+ tid0 = last_tunnel_id;
}
else
{
- n_no_tunnel++;
- next[0] = IPSEC_INPUT_NEXT_DROP;
- goto trace00;
+ uword *p =
+ hash_get (im->ipsec4_if_pool_index_by_key, key40.as_u64);
+ if (p)
+ {
+ tid0 = p[0];
+ last_tunnel_id = tid0;
+ last_key4.as_u64 = key40.as_u64;
+ }
+ else
+ {
+ next[0] =
+ ipsec_ip4_if_no_tunnel (node, b[0], esp0, ip40, buf_adv0);
+ n_no_tunnel++;
+ goto trace00;
+ }
}
}
if (PREDICT_TRUE (t0->hw_if_index != ~0))
{
- vnet_buffer (b[0])->ipsec.flags = 0;
sw_if_index0 = t0->sw_if_index;
vnet_buffer (b[0])->sw_if_index[VLIB_RX] = sw_if_index0;
vlib_increment_combined_counter
(drop_counter, thread_index, sw_if_index0, 1, len0);
n_disabled++;
+ b[0]->error = node->errors[IPSEC_IF_INPUT_ERROR_DISABLED];
next[0] = IPSEC_INPUT_NEXT_DROP;
goto trace00;
}
n_bytes = len0;
}
}
- else
- {
- vnet_buffer (b[0])->ipsec.flags = IPSEC_FLAG_IPSEC_GRE_TUNNEL;
- }
trace00:
- if (is_trace)
+ if (PREDICT_FALSE (is_trace))
{
- if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
ipsec_if_input_trace_t *tr =
vlib_add_trace (vm, node, b[0], sizeof (*tr));
last_sw_if_index, n_packets, n_bytes);
}
- vlib_node_increment_counter (vm, ipsec_if_input_node.index,
+ vlib_node_increment_counter (vm, node->node_index,
IPSEC_IF_INPUT_ERROR_RX,
- from_frame->n_vectors - n_disabled);
- vlib_node_increment_counter (vm, ipsec_if_input_node.index,
- IPSEC_IF_INPUT_ERROR_DISABLED, n_disabled);
- vlib_node_increment_counter (vm, ipsec_if_input_node.index,
- IPSEC_IF_INPUT_ERROR_NO_TUNNEL, n_no_tunnel);
+ from_frame->n_vectors - (n_disabled +
+ n_no_tunnel));
vlib_buffer_enqueue_to_next (vm, node, from, nexts, from_frame->n_vectors);
return from_frame->n_vectors;
}
-VLIB_NODE_FN (ipsec_if_input_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
+VLIB_NODE_FN (ipsec4_if_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
{
- return ipsec_if_input_inline (vm, node, from_frame);
+ return ipsec_if_input_inline (vm, node, from_frame, 0 /* is_ip6 */ );
}
/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ipsec_if_input_node) = {
- .name = "ipsec-if-input",
+VLIB_REGISTER_NODE (ipsec4_if_input_node) = {
+ .name = "ipsec4-if-input",
.vector_size = sizeof (u32),
.format_trace = format_ipsec_if_input_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
};
/* *INDENT-ON* */
+VLIB_NODE_FN (ipsec6_if_input_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return ipsec_if_input_inline (vm, node, from_frame, 1 /* is_ip6 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ipsec6_if_input_node) = {
+ .name = "ipsec6-if-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_ipsec_if_input_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(ipsec_if_input_error_strings),
+ .error_strings = ipsec_if_input_error_strings,
+ .sibling_of = "ipsec6-input-feature",
+};
+/* *INDENT-ON* */
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff