#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
#include <vnet/feature/feature.h>
+#include <vnet/ipsec/ipsec_spd_fp_lookup.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
#include <vnet/ipsec/ah.h>
+#include <vnet/ipsec/ipsec_io.h>
-#define foreach_ipsec_input_error \
- _(RX_PKTS, "IPSEC pkts received") \
- _(DECRYPTION_FAILED, "IPSEC decryption failed")
+#define foreach_ipsec_input_error \
+_(RX_PKTS, "IPSec pkts received") \
+_(RX_POLICY_MATCH, "IPSec policy match") \
+_(RX_POLICY_NO_MATCH, "IPSec policy not matched") \
+_(RX_POLICY_BYPASS, "IPSec policy bypass") \
+_(RX_POLICY_DISCARD, "IPSec policy discard")
typedef enum
{
typedef struct
{
+ ip_protocol_t proto;
u32 spd;
+ u32 policy_index;
+ u32 policy_type;
u32 sa_id;
u32 spi;
u32 seq;
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
ipsec_input_trace_t *t = va_arg (*args, ipsec_input_trace_t *);
- if (t->spi == 0 && t->seq == 0)
- {
- s = format (s, "esp: no esp packet");
- return s;
- }
+ s =
+ format (s, "%U: sa_id %u type: %u spd %u policy %d spi %u (0x%08x) seq %u",
+ format_ip_protocol, t->proto, t->sa_id, t->policy_type, t->spd,
+ t->policy_index, t->spi, t->spi, t->seq);
- if (t->sa_id != 0)
- {
- s =
- format (s, "esp: sa_id %u spd %u spi %u seq %u", t->sa_id, t->spd,
- t->spi, t->seq);
- }
- else
+ return s;
+}
+
+always_inline void
+ipsec4_input_spd_add_flow_cache_entry (ipsec_main_t *im, u32 sa, u32 da,
+ ipsec_spd_policy_type_t policy_type,
+ u32 pol_id)
+{
+ u64 hash;
+ u8 is_overwrite = 0, is_stale_overwrite = 0;
+ /* Store in network byte order to avoid conversion on lookup */
+ ipsec4_inbound_spd_tuple_t ip4_tuple = {
+ .ip4_src_addr = (ip4_address_t) clib_host_to_net_u32 (sa),
+ .ip4_dest_addr = (ip4_address_t) clib_host_to_net_u32 (da),
+ .policy_type = policy_type
+ };
+
+ ip4_tuple.kv_16_8.value =
+ (((u64) pol_id) << 32) | ((u64) im->input_epoch_count);
+
+ hash = ipsec4_hash_16_8 (&ip4_tuple.kv_16_8);
+ hash &= (im->ipsec4_in_spd_hash_num_buckets - 1);
+
+ ipsec_spinlock_lock (&im->ipsec4_in_spd_hash_tbl[hash].bucket_lock);
+ /* Check if we are overwriting an existing entry so we know
+ whether to increment the flow cache counter. Since flow
+ cache counter is reset on any policy add/remove, but
+ hash table values are not, we need to check if the entry
+ we are overwriting is stale or not. If it's a stale entry
+ overwrite, we still want to increment flow cache counter */
+ is_overwrite = (im->ipsec4_in_spd_hash_tbl[hash].value != 0);
+ /* Check if we are overwriting a stale entry by comparing
+ with current epoch count */
+ if (PREDICT_FALSE (is_overwrite))
+ is_stale_overwrite =
+ (im->input_epoch_count !=
+ ((u32) (im->ipsec4_in_spd_hash_tbl[hash].value & 0xFFFFFFFF)));
+ clib_memcpy_fast (&im->ipsec4_in_spd_hash_tbl[hash], &ip4_tuple.kv_16_8,
+ sizeof (ip4_tuple.kv_16_8));
+ ipsec_spinlock_unlock (&im->ipsec4_in_spd_hash_tbl[hash].bucket_lock);
+
+ /* Increment the counter to track active flow cache entries
+ when entering a fresh entry or overwriting a stale one */
+ if (!is_overwrite || is_stale_overwrite)
+ clib_atomic_fetch_add_relax (&im->ipsec4_in_spd_flow_cache_entries, 1);
+
+ return;
+}
+
+always_inline ipsec_policy_t *
+ipsec4_input_spd_find_flow_cache_entry (ipsec_main_t *im, u32 sa, u32 da,
+ ipsec_spd_policy_type_t policy_type)
+{
+ ipsec_policy_t *p = NULL;
+ ipsec4_hash_kv_16_8_t kv_result;
+ u64 hash;
+ ipsec4_inbound_spd_tuple_t ip4_tuple = { .ip4_src_addr = (ip4_address_t) sa,
+ .ip4_dest_addr = (ip4_address_t) da,
+ .policy_type = policy_type };
+
+ hash = ipsec4_hash_16_8 (&ip4_tuple.kv_16_8);
+ hash &= (im->ipsec4_in_spd_hash_num_buckets - 1);
+
+ ipsec_spinlock_lock (&im->ipsec4_in_spd_hash_tbl[hash].bucket_lock);
+ kv_result = im->ipsec4_in_spd_hash_tbl[hash];
+ ipsec_spinlock_unlock (&im->ipsec4_in_spd_hash_tbl[hash].bucket_lock);
+
+ if (ipsec4_hash_key_compare_16_8 ((u64 *) &ip4_tuple.kv_16_8,
+ (u64 *) &kv_result))
{
- s =
- format (s, "esp: no sa spd %u spi %u seq %u", t->spd, t->spi, t->seq);
+ if (im->input_epoch_count == ((u32) (kv_result.value & 0xFFFFFFFF)))
+ {
+ /* Get the policy based on the index */
+ p =
+ pool_elt_at_index (im->policies, ((u32) (kv_result.value >> 32)));
+ }
}
- return s;
+
+ return p;
+}
+
+always_inline void
+ipsec_fp_in_5tuple_from_ip4_range (ipsec_fp_5tuple_t *tuple, u32 sa, u32 da,
+ u32 spi, u8 action)
+{
+ clib_memset (tuple->l3_zero_pad, 0, sizeof (tuple->l3_zero_pad));
+ tuple->laddr.as_u32 = da;
+ tuple->raddr.as_u32 = sa;
+ tuple->spi = spi;
+ tuple->action = action;
+ tuple->is_ipv6 = 0;
+}
+
+always_inline void
+ipsec_fp_in_5tuple_from_ip6_range (ipsec_fp_5tuple_t *tuple, ip6_address_t *sa,
+ ip6_address_t *da, u32 spi, u8 action)
+
+{
+ clib_memcpy (&tuple->ip6_laddr, da, sizeof (ip6_address_t));
+ clib_memcpy (&tuple->ip6_raddr, sa, sizeof (ip6_address_t));
+
+ tuple->spi = spi;
+ tuple->action = action;
+ tuple->is_ipv6 = 1;
}
always_inline ipsec_policy_t *
-ipsec_input_protect_policy_match (ipsec_spd_t * spd, u32 sa, u32 da, u32 spi)
+ipsec_input_policy_match (ipsec_spd_t *spd, u32 sa, u32 da,
+ ipsec_spd_policy_type_t policy_type)
+{
+ ipsec_main_t *im = &ipsec_main;
+ ipsec_policy_t *p;
+ u32 *i;
+
+ vec_foreach (i, spd->policies[policy_type])
+ {
+ p = pool_elt_at_index (im->policies, *i);
+
+ if (da < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32))
+ continue;
+
+ if (da > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32))
+ continue;
+
+ if (sa < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32))
+ continue;
+
+ if (sa > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32))
+ continue;
+
+ if (im->input_flow_cache_flag)
+ {
+ /* Add an Entry in Flow cache */
+ ipsec4_input_spd_add_flow_cache_entry (im, sa, da, policy_type, *i);
+ }
+ return p;
+ }
+ return 0;
+}
+
+always_inline ipsec_policy_t *
+ipsec_input_protect_policy_match (ipsec_spd_t *spd, u32 sa, u32 da, u32 spi)
{
ipsec_main_t *im = &ipsec_main;
ipsec_policy_t *p;
ipsec_sa_t *s;
u32 *i;
- vec_foreach (i, spd->ipv4_inbound_protect_policy_indices)
+ vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP4_INBOUND_PROTECT])
{
- p = pool_elt_at_index (spd->policies, *i);
- s = pool_elt_at_index (im->sad, p->sa_index);
+ p = pool_elt_at_index (im->policies, *i);
+ s = ipsec_sa_get (p->sa_index);
if (spi != s->spi)
continue;
- if (s->is_tunnel)
+ if (ipsec_sa_is_set_IS_TUNNEL (s))
{
- if (da != clib_net_to_host_u32 (s->tunnel_dst_addr.ip4.as_u32))
+ if (da != clib_net_to_host_u32 (s->tunnel.t_dst.ip.ip4.as_u32))
continue;
- if (sa != clib_net_to_host_u32 (s->tunnel_src_addr.ip4.as_u32))
+ if (sa != clib_net_to_host_u32 (s->tunnel.t_src.ip.ip4.as_u32))
continue;
- return p;
+ goto return_policy;
}
if (da < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32))
if (sa > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32))
continue;
+ return_policy:
+ if (im->input_flow_cache_flag)
+ {
+ /* Add an Entry in Flow cache */
+ ipsec4_input_spd_add_flow_cache_entry (
+ im, sa, da, IPSEC_SPD_POLICY_IP4_INBOUND_PROTECT, *i);
+ }
+
return p;
}
return 0;
return 0;
}
+always_inline void
+ipsec_collect_ah_trace (vlib_buffer_t **b, vlib_node_runtime_t *node,
+ vlib_main_t *vm, ip4_header_t *ip0, ah_header_t *ah0,
+ u8 has_space0, ipsec_spd_t *spd0, ipsec_policy_t *p0,
+ u32 pi0)
+{
+ if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
+ PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_input_trace_t *tr = vlib_add_trace (vm, node, b[0], sizeof (*tr));
+
+ tr->proto = ip0->protocol;
+ tr->sa_id = p0 ? p0->sa_id : ~0;
+ tr->spi = has_space0 ? clib_net_to_host_u32 (ah0->spi) : ~0;
+ tr->seq = has_space0 ? clib_net_to_host_u32 (ah0->seq_no) : ~0;
+ tr->spd = spd0->id;
+ tr->policy_index = pi0;
+ }
+}
+
+always_inline void
+ipsec_ah_packet_process (vlib_main_t *vm, ipsec_main_t *im, ip4_header_t *ip0,
+ ah_header_t *ah0, u32 thread_index, ipsec_spd_t *spd0,
+ vlib_buffer_t **b, vlib_node_runtime_t *node,
+ u64 *ipsec_bypassed, u64 *ipsec_dropped,
+ u64 *ipsec_matched, u64 *ipsec_unprocessed, u16 *next)
+
+{
+ ipsec_policy_t *p0 = NULL;
+ u32 pi0 = ~0;
+ u8 has_space0;
+ /* if flow cache is enabled, first search through flow cache for a
+ * policy match and revert back to linear search on failure */
+ bool search_flow_cache = im->input_flow_cache_flag;
+
+ while (1)
+ {
+ if (search_flow_cache)
+ {
+ p0 = ipsec4_input_spd_find_flow_cache_entry (
+ im, ip0->src_address.as_u32, ip0->dst_address.as_u32,
+ IPSEC_SPD_POLICY_IP4_INBOUND_PROTECT);
+ }
+ else
+ {
+ p0 = ipsec_input_protect_policy_match (
+ spd0, clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ clib_net_to_host_u32 (ah0->spi));
+ }
+
+ has_space0 = vlib_buffer_has_space (b[0], (clib_address_t) (ah0 + 1) -
+ (clib_address_t) ip0);
+
+ if (PREDICT_TRUE ((p0 != NULL) & (has_space0)))
+ {
+ *ipsec_matched += 1;
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->length));
+
+ vnet_buffer (b[0])->ipsec.sad_index = p0->sa_index;
+ next[0] = im->ah4_decrypt_next_index;
+ ipsec_collect_ah_trace (b, node, vm, ip0, ah0, has_space0, spd0, p0,
+ pi0);
+ return;
+ }
+ else
+ {
+ p0 = 0;
+ pi0 = ~0;
+ }
+ if (search_flow_cache)
+ {
+ p0 = ipsec4_input_spd_find_flow_cache_entry (
+ im, ip0->src_address.as_u32, ip0->dst_address.as_u32,
+ IPSEC_SPD_POLICY_IP4_INBOUND_BYPASS);
+ }
+
+ else
+ {
+ p0 = ipsec_input_policy_match (
+ spd0, clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ IPSEC_SPD_POLICY_IP4_INBOUND_BYPASS);
+ }
+
+ if (PREDICT_TRUE ((p0 != NULL)))
+ {
+ *ipsec_bypassed += 1;
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->length));
+ ipsec_collect_ah_trace (b, node, vm, ip0, ah0, has_space0, spd0, p0,
+ pi0);
+ return;
+ }
+ else
+ {
+ p0 = 0;
+ pi0 = ~0;
+ };
+
+ if (search_flow_cache)
+ {
+ p0 = ipsec4_input_spd_find_flow_cache_entry (
+ im, ip0->src_address.as_u32, ip0->dst_address.as_u32,
+ IPSEC_SPD_POLICY_IP4_INBOUND_DISCARD);
+ }
+
+ else
+ {
+ p0 = ipsec_input_policy_match (
+ spd0, clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ IPSEC_SPD_POLICY_IP4_INBOUND_DISCARD);
+ }
+
+ if (PREDICT_TRUE ((p0 != NULL)))
+ {
+ *ipsec_dropped += 1;
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->length));
+
+ next[0] = IPSEC_INPUT_NEXT_DROP;
+ ipsec_collect_ah_trace (b, node, vm, ip0, ah0, has_space0, spd0, p0,
+ pi0);
+ return;
+ }
+ else
+ {
+ p0 = 0;
+ pi0 = ~0;
+ };
+ /* flow cache search failed, retry with linear search */
+ if (search_flow_cache && p0 == NULL)
+ {
+ search_flow_cache = false;
+ }
+ else if (search_flow_cache == false && p0 == NULL)
+ {
+ /* Drop by default if no match on PROTECT, BYPASS or DISCARD */
+ *ipsec_unprocessed += 1;
+ next[0] = IPSEC_INPUT_NEXT_DROP;
+ return;
+ }
+ }
+}
+
+always_inline void
+ipsec_esp_packet_process (vlib_main_t *vm, ipsec_main_t *im, ip4_header_t *ip0,
+ esp_header_t *esp0, u32 thread_index,
+ ipsec_spd_t *spd0, vlib_buffer_t **b,
+ vlib_node_runtime_t *node, u64 *ipsec_bypassed,
+ u64 *ipsec_dropped, u64 *ipsec_matched,
+ u64 *ipsec_unprocessed, u16 *next)
+
+{
+ ipsec_policy_t *p0 = NULL;
+ u32 pi0;
+ u8 has_space0;
+ bool search_flow_cache = false;
+ ipsec_policy_t *policies[1];
+ ipsec_fp_5tuple_t tuples[1];
+ bool ip_v6 = true;
+
+ /* if flow cache is enabled, first search through flow cache for a
+ * policy match for either protect, bypass or discard rules, in that
+ * order. if no match is found search_flow_cache is set to false (1)
+ * and we revert back to linear search
+ */
+
+ search_flow_cache = im->input_flow_cache_flag;
+udp_or_esp:
+
+ if (esp0->spi == 0)
+ {
+ /* RFC 4303, section 2.1: The SPI value of zero (0 is reserved for
+ * local, implementation-specific use and MUST NOT be sent on the wire.
+ */
+ *ipsec_unprocessed += 1;
+ next[0] = IPSEC_INPUT_NEXT_DROP;
+ return;
+ }
+
+ if (im->fp_spd_ipv4_in_is_enabled &&
+ PREDICT_TRUE (INDEX_INVALID != spd0->fp_spd.ip4_in_lookup_hash_idx))
+ {
+ ipsec_fp_in_5tuple_from_ip4_range (&tuples[0], ip0->src_address.as_u32,
+ ip0->dst_address.as_u32,
+ clib_net_to_host_u32 (esp0->spi),
+ IPSEC_SPD_POLICY_IP4_INBOUND_PROTECT);
+ ipsec_fp_in_policy_match_n (&spd0->fp_spd, !ip_v6, tuples, policies, 1);
+ p0 = policies[0];
+ }
+ else if (search_flow_cache) /* attempt to match policy in flow cache */
+ {
+ p0 = ipsec4_input_spd_find_flow_cache_entry (
+ im, ip0->src_address.as_u32, ip0->dst_address.as_u32,
+ IPSEC_SPD_POLICY_IP4_INBOUND_PROTECT);
+ }
+
+ else /* linear search if flow cache is not enabled,
+ or flow cache search just failed */
+ {
+ p0 = ipsec_input_protect_policy_match (
+ spd0, clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ clib_net_to_host_u32 (esp0->spi));
+ }
+ has_space0 = vlib_buffer_has_space (b[0], (clib_address_t) (esp0 + 1) -
+ (clib_address_t) ip0);
+
+ if (PREDICT_TRUE ((p0 != NULL) & (has_space0)))
+ {
+ *ipsec_matched += 1;
+
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->length));
+
+ vnet_buffer (b[0])->ipsec.sad_index = p0->sa_index;
+ next[0] = im->esp4_decrypt_next_index;
+ vlib_buffer_advance (b[0], ((u8 *) esp0 - (u8 *) ip0));
+ goto trace0;
+ }
+ else
+ {
+ p0 = 0;
+ pi0 = ~0;
+ }
+ if (im->fp_spd_ipv4_in_is_enabled &&
+ PREDICT_TRUE (INDEX_INVALID != spd0->fp_spd.ip4_in_lookup_hash_idx))
+ {
+ tuples->action = IPSEC_SPD_POLICY_IP4_INBOUND_BYPASS;
+ ipsec_fp_in_policy_match_n (&spd0->fp_spd, !ip_v6, tuples, policies, 1);
+ p0 = policies[0];
+ }
+ else if (search_flow_cache)
+ {
+ p0 = ipsec4_input_spd_find_flow_cache_entry (
+ im, ip0->src_address.as_u32, ip0->dst_address.as_u32,
+ IPSEC_SPD_POLICY_IP4_INBOUND_BYPASS);
+ }
+
+ else
+ {
+ p0 = ipsec_input_policy_match (
+ spd0, clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ IPSEC_SPD_POLICY_IP4_INBOUND_BYPASS);
+ }
+
+ if (PREDICT_TRUE ((p0 != NULL)))
+ {
+ *ipsec_bypassed += 1;
+
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->length));
+
+ goto trace0;
+ }
+ else
+ {
+ p0 = 0;
+ pi0 = ~0;
+ };
+ if (im->fp_spd_ipv4_in_is_enabled &&
+ PREDICT_TRUE (INDEX_INVALID != spd0->fp_spd.ip4_in_lookup_hash_idx))
+ {
+ tuples->action = IPSEC_SPD_POLICY_IP4_INBOUND_DISCARD;
+ ipsec_fp_in_policy_match_n (&spd0->fp_spd, !ip_v6, tuples, policies, 1);
+ p0 = policies[0];
+ }
+ else
+
+ if (search_flow_cache)
+ {
+ p0 = ipsec4_input_spd_find_flow_cache_entry (
+ im, ip0->src_address.as_u32, ip0->dst_address.as_u32,
+ IPSEC_SPD_POLICY_IP4_INBOUND_DISCARD);
+ }
+
+ else
+ {
+ p0 = ipsec_input_policy_match (
+ spd0, clib_net_to_host_u32 (ip0->src_address.as_u32),
+ clib_net_to_host_u32 (ip0->dst_address.as_u32),
+ IPSEC_SPD_POLICY_IP4_INBOUND_DISCARD);
+ }
+
+ if (PREDICT_TRUE ((p0 != NULL)))
+ {
+ *ipsec_dropped += 1;
+
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->length));
+
+ next[0] = IPSEC_INPUT_NEXT_DROP;
+ goto trace0;
+ }
+ else
+ {
+ p0 = 0;
+ pi0 = ~0;
+ };
+ /* flow cache search failed, try again with linear search */
+ if (search_flow_cache && p0 == NULL)
+ {
+ search_flow_cache = false;
+ goto udp_or_esp;
+ }
+
+ /* Drop by default if no match on PROTECT, BYPASS or DISCARD */
+ *ipsec_unprocessed += 1;
+ next[0] = IPSEC_INPUT_NEXT_DROP;
+
+trace0:
+ if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
+ PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_input_trace_t *tr = vlib_add_trace (vm, node, b[0], sizeof (*tr));
+
+ tr->proto = ip0->protocol;
+ tr->sa_id = p0 ? p0->sa_id : ~0;
+ tr->spi = has_space0 ? clib_net_to_host_u32 (esp0->spi) : ~0;
+ tr->seq = has_space0 ? clib_net_to_host_u32 (esp0->seq) : ~0;
+ tr->spd = spd0->id;
+ tr->policy_index = pi0;
+ }
+}
+
always_inline ipsec_policy_t *
ipsec6_input_protect_policy_match (ipsec_spd_t * spd,
ip6_address_t * sa,
ipsec_sa_t *s;
u32 *i;
- vec_foreach (i, spd->ipv6_inbound_protect_policy_indices)
+ vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP6_INBOUND_PROTECT])
{
- p = pool_elt_at_index (spd->policies, *i);
- s = pool_elt_at_index (im->sad, p->sa_index);
+ p = pool_elt_at_index (im->policies, *i);
+ s = ipsec_sa_get (p->sa_index);
if (spi != s->spi)
continue;
- if (s->is_tunnel)
+ if (ipsec_sa_is_set_IS_TUNNEL (s))
{
- if (!ip6_address_is_equal (sa, &s->tunnel_src_addr.ip6))
+ if (!ip6_address_is_equal (sa, &s->tunnel.t_src.ip.ip6))
continue;
- if (!ip6_address_is_equal (da, &s->tunnel_dst_addr.ip6))
+ if (!ip6_address_is_equal (da, &s->tunnel.t_dst.ip.ip6))
continue;
return p;
return 0;
}
-static vlib_node_registration_t ipsec4_input_node;
+extern vlib_node_registration_t ipsec4_input_node;
VLIB_NODE_FN (ipsec4_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
+ vlib_frame_t * frame)
{
- u32 n_left_from, *from, next_index, *to_next;
+ u32 n_left_from, *from, thread_index;
ipsec_main_t *im = &ipsec_main;
+ u64 ipsec_unprocessed = 0, ipsec_matched = 0;
+ u64 ipsec_dropped = 0, ipsec_bypassed = 0;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE];
+ vlib_buffer_t **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next;
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next = nexts;
+ vlib_get_buffers (vm, from, bufs, n_left_from);
+ thread_index = vm->thread_index;
- next_index = node->cached_next_index;
while (n_left_from > 0)
{
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
+ u32 next32;
+ ip4_header_t *ip0;
+ esp_header_t *esp0 = NULL;
+ ah_header_t *ah0;
+ ip4_ipsec_config_t *c0;
+ ipsec_spd_t *spd0;
+
+ if (n_left_from > 2)
{
- u32 bi0, next0;
- vlib_buffer_t *b0;
- ip4_header_t *ip0;
- esp_header_t *esp0;
- ah_header_t *ah0;
- ip4_ipsec_config_t *c0;
- ipsec_spd_t *spd0;
- ipsec_policy_t *p0 = 0;
+ vlib_prefetch_buffer_data (b[1], LOAD);
+ }
- bi0 = to_next[0] = from[0];
- from += 1;
- n_left_from -= 1;
- to_next += 1;
- n_left_to_next -= 1;
+ b[0]->flags |= VNET_BUFFER_F_IS_IP4;
+ b[0]->flags &= ~VNET_BUFFER_F_IS_IP6;
+ c0 = vnet_feature_next_with_data (&next32, b[0], sizeof (c0[0]));
+ next[0] = (u16) next32;
- b0 = vlib_get_buffer (vm, bi0);
- b0->flags |= VNET_BUFFER_F_IS_IP4;
- b0->flags &= ~VNET_BUFFER_F_IS_IP6;
- c0 = vnet_feature_next_with_data (&next0, b0, sizeof (c0[0]));
+ spd0 = pool_elt_at_index (im->spds, c0->spd_index);
- spd0 = pool_elt_at_index (im->spds, c0->spd_index);
+ ip0 = vlib_buffer_get_current (b[0]);
- ip0 = vlib_buffer_get_current (b0);
+ if (ip0->protocol == IP_PROTOCOL_UDP)
+ {
+ udp_header_t *udp0 = NULL;
+ udp0 = (udp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
- if (PREDICT_TRUE
- (ip0->protocol == IP_PROTOCOL_IPSEC_ESP
- || ip0->protocol == IP_PROTOCOL_UDP))
+ /* RFC5996 Section 2.23 "Port 4500 is reserved for
+ * UDP-encapsulated ESP and IKE."
+ */
+ if (clib_host_to_net_u16 (4500) == udp0->dst_port)
{
-#if 0
- clib_warning
- ("packet received from %U to %U spi %u size %u spd_id %u",
- format_ip4_address, ip0->src_address.as_u8,
- format_ip4_address, ip0->dst_address.as_u8,
- clib_net_to_host_u32 (esp0->spi),
- clib_net_to_host_u16 (ip0->length), spd0->id);
-#endif
-
- esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
- if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_UDP))
- {
- esp0 =
- (esp_header_t *) ((u8 *) esp0 + sizeof (udp_header_t));
- }
- /* FIXME TODO missing check whether there is enough data inside
- * IP/UDP to contain ESP header & stuff ? */
- p0 = ipsec_input_protect_policy_match (spd0,
- clib_net_to_host_u32
- (ip0->src_address.
- as_u32),
- clib_net_to_host_u32
- (ip0->dst_address.
- as_u32),
- clib_net_to_host_u32
- (esp0->spi));
+ esp0 = (esp_header_t *) ((u8 *) udp0 + sizeof (udp_header_t));
+
+ ipsec_esp_packet_process (vm, im, ip0, esp0, thread_index, spd0,
+ b, node, &ipsec_bypassed,
+ &ipsec_dropped, &ipsec_matched,
+ &ipsec_unprocessed, next);
+ if (ipsec_bypassed > 0)
+ goto ipsec_bypassed;
+ }
+ }
+ else if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP))
+ {
+ esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
+ ipsec_esp_packet_process (vm, im, ip0, esp0, thread_index, spd0, b,
+ node, &ipsec_bypassed, &ipsec_dropped,
+ &ipsec_matched, &ipsec_unprocessed, next);
+ if (ipsec_bypassed > 0)
+ goto ipsec_bypassed;
+ }
+ else if (ip0->protocol == IP_PROTOCOL_IPSEC_AH)
+ {
+ ah0 = (ah_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
- if (PREDICT_TRUE (p0 != 0))
- {
- p0->counter.packets++;
- p0->counter.bytes += clib_net_to_host_u16 (ip0->length);
- vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
- vnet_buffer (b0)->ipsec.flags = 0;
- next0 = im->esp4_decrypt_next_index;
- vlib_buffer_advance (b0, ((u8 *) esp0 - (u8 *) ip0));
- goto trace0;
- }
+ ipsec_ah_packet_process (vm, im, ip0, ah0, thread_index, spd0, b,
+ node, &ipsec_bypassed, &ipsec_dropped,
+ &ipsec_matched, &ipsec_unprocessed, next);
+ }
+ else
+ {
+ ipsec_bypassed:
+ ipsec_unprocessed += 1;
+ }
+ n_left_from -= 1;
+ b += 1;
+ next += 1;
+ }
- /* FIXME bypass and discard */
- trace0:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- ipsec_input_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP ||
- ip0->protocol == IP_PROTOCOL_UDP)
- {
- if (p0)
- tr->sa_id = p0->sa_id;
- tr->spi = clib_host_to_net_u32 (esp0->spi);
- tr->seq = clib_host_to_net_u32 (esp0->seq);
- tr->spd = spd0->id;
- }
- }
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
- }
+ vlib_node_increment_counter (vm, ipsec4_input_node.index,
+ IPSEC_INPUT_ERROR_RX_PKTS, frame->n_vectors);
+ vlib_node_increment_counter (vm, ipsec4_input_node.index,
+ IPSEC_INPUT_ERROR_RX_POLICY_MATCH,
+ ipsec_matched);
- if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_AH))
- {
- ah0 = (ah_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
- p0 = ipsec_input_protect_policy_match (spd0,
- clib_net_to_host_u32
- (ip0->src_address.
- as_u32),
- clib_net_to_host_u32
- (ip0->dst_address.
- as_u32),
- clib_net_to_host_u32
- (ah0->spi));
+ vlib_node_increment_counter (vm, ipsec4_input_node.index,
+ IPSEC_INPUT_ERROR_RX_POLICY_NO_MATCH,
+ ipsec_unprocessed);
- if (PREDICT_TRUE (p0 != 0))
- {
- p0->counter.packets++;
- p0->counter.bytes += clib_net_to_host_u16 (ip0->length);
- vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
- vnet_buffer (b0)->ipsec.flags = 0;
- next0 = im->ah4_decrypt_next_index;
- goto trace1;
- }
- /* FIXME bypass and discard */
- trace1:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- ipsec_input_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)
- {
- if (p0)
- tr->sa_id = p0->sa_id;
- tr->spi = clib_host_to_net_u32 (ah0->spi);
- tr->seq = clib_host_to_net_u32 (ah0->seq_no);
- tr->spd = spd0->id;
- }
- }
- }
+ vlib_node_increment_counter (vm, ipsec4_input_node.index,
+ IPSEC_INPUT_ERROR_RX_POLICY_DISCARD,
+ ipsec_dropped);
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next, bi0,
- next0);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
vlib_node_increment_counter (vm, ipsec4_input_node.index,
- IPSEC_INPUT_ERROR_RX_PKTS,
- from_frame->n_vectors);
+ IPSEC_INPUT_ERROR_RX_POLICY_BYPASS,
+ ipsec_bypassed);
- return from_frame->n_vectors;
+ return frame->n_vectors;
}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ipsec4_input_node,static) = {
- .name = "ipsec4-input",
+VLIB_REGISTER_NODE (ipsec4_input_node) = {
+ .name = "ipsec4-input-feature",
.vector_size = sizeof (u32),
.format_trace = format_ipsec_input_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
-
.n_errors = ARRAY_LEN(ipsec_input_error_strings),
.error_strings = ipsec_input_error_strings,
-
.n_next_nodes = IPSEC_INPUT_N_NEXT,
.next_nodes = {
#define _(s,n) [IPSEC_INPUT_NEXT_##s] = n,
#undef _
},
};
-/* *INDENT-ON* */
-static vlib_node_registration_t ipsec6_input_node;
+extern vlib_node_registration_t ipsec6_input_node;
VLIB_NODE_FN (ipsec6_input_node) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
- u32 n_left_from, *from, next_index, *to_next;
+ u32 n_left_from, *from, next_index, *to_next, thread_index;
ipsec_main_t *im = &ipsec_main;
+ u32 ipsec_unprocessed = 0;
+ u32 ipsec_matched = 0;
+ ipsec_policy_t *policies[1];
+ ipsec_fp_5tuple_t tuples[1];
+ bool ip_v6 = true;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
+ thread_index = vm->thread_index;
next_index = node->cached_next_index;
while (n_left_from > 0 && n_left_to_next > 0)
{
- u32 bi0, next0;
+ u32 bi0, next0, pi0 = ~0;
vlib_buffer_t *b0;
ip6_header_t *ip0;
esp_header_t *esp0;
clib_net_to_host_u16 (ip0->payload_length) + header_size,
spd0->id);
#endif
- p0 = ipsec6_input_protect_policy_match (spd0,
- &ip0->src_address,
- &ip0->dst_address,
- clib_net_to_host_u32
- (esp0->spi));
+ if (im->fp_spd_ipv6_in_is_enabled &&
+ PREDICT_TRUE (INDEX_INVALID !=
+ spd0->fp_spd.ip6_in_lookup_hash_idx))
+ {
+ ipsec_fp_in_5tuple_from_ip6_range (
+ &tuples[0], &ip0->src_address, &ip0->dst_address,
+ clib_net_to_host_u32 (esp0->spi),
+ IPSEC_SPD_POLICY_IP6_INBOUND_PROTECT);
+ ipsec_fp_in_policy_match_n (&spd0->fp_spd, ip_v6, tuples,
+ policies, 1);
+ p0 = policies[0];
+ }
+ else
+ p0 = ipsec6_input_protect_policy_match (
+ spd0, &ip0->src_address, &ip0->dst_address,
+ clib_net_to_host_u32 (esp0->spi));
if (PREDICT_TRUE (p0 != 0))
{
- p0->counter.packets++;
- p0->counter.bytes +=
- clib_net_to_host_u16 (ip0->payload_length);
- p0->counter.bytes += header_size;
+ ipsec_matched += 1;
+
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter
+ (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->payload_length) +
+ header_size);
+
vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
- vnet_buffer (b0)->ipsec.flags = 0;
next0 = im->esp6_decrypt_next_index;
vlib_buffer_advance (b0, header_size);
+ /* TODO Add policy matching for bypass and discard policy
+ * type */
goto trace0;
}
+ else
+ {
+ pi0 = ~0;
+ ipsec_unprocessed += 1;
+ next0 = IPSEC_INPUT_NEXT_DROP;
+ }
}
else if (ip0->protocol == IP_PROTOCOL_IPSEC_AH)
{
if (PREDICT_TRUE (p0 != 0))
{
- p0->counter.packets++;
- p0->counter.bytes +=
- clib_net_to_host_u16 (ip0->payload_length);
- p0->counter.bytes += header_size;
+ ipsec_matched += 1;
+ pi0 = p0 - im->policies;
+ vlib_increment_combined_counter
+ (&ipsec_spd_policy_counters,
+ thread_index, pi0, 1,
+ clib_net_to_host_u16 (ip0->payload_length) +
+ header_size);
+
vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
- vnet_buffer (b0)->ipsec.flags = 0;
next0 = im->ah6_decrypt_next_index;
goto trace0;
}
+ else
+ {
+ pi0 = ~0;
+ ipsec_unprocessed += 1;
+ next0 = IPSEC_INPUT_NEXT_DROP;
+ }
+ }
+ else
+ {
+ ipsec_unprocessed += 1;
}
trace0:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) &&
+ PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
{
ipsec_input_trace_t *tr =
vlib_add_trace (vm, node, b0, sizeof (*tr));
- if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)
+
+ if (p0)
{
- if (p0)
- tr->sa_id = p0->sa_id;
- tr->spi = clib_host_to_net_u32 (esp0->spi);
- tr->seq = clib_host_to_net_u32 (esp0->seq);
- tr->spd = spd0->id;
+ tr->sa_id = p0->sa_id;
+ tr->policy_type = p0->type;
}
+
+ tr->proto = ip0->protocol;
+ tr->spi = clib_net_to_host_u32 (esp0->spi);
+ tr->seq = clib_net_to_host_u32 (esp0->seq);
+ tr->spd = spd0->id;
+ tr->policy_index = pi0;
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
+
vlib_node_increment_counter (vm, ipsec6_input_node.index,
IPSEC_INPUT_ERROR_RX_PKTS,
- from_frame->n_vectors);
+ from_frame->n_vectors - ipsec_unprocessed);
+
+ vlib_node_increment_counter (vm, ipsec6_input_node.index,
+ IPSEC_INPUT_ERROR_RX_POLICY_MATCH,
+ ipsec_matched);
return from_frame->n_vectors;
}
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (ipsec6_input_node,static) = {
- .name = "ipsec6-input",
+VLIB_REGISTER_NODE (ipsec6_input_node) = {
+ .name = "ipsec6-input-feature",
.vector_size = sizeof (u32),
.format_trace = format_ipsec_input_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
-
.n_errors = ARRAY_LEN(ipsec_input_error_strings),
.error_strings = ipsec_input_error_strings,
-
- .sibling_of = "ipsec4-input",
+ .n_next_nodes = IPSEC_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s,n) [IPSEC_INPUT_NEXT_##s] = n,
+ foreach_ipsec_input_next
+#undef _
+ },
};
-/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff