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-rw-r--r--src/vnet/ipsec/ipsec_output.c147
-rw-r--r--src/vnet/ipsec/ipsec_output.h169
2 files changed, 171 insertions, 145 deletions
diff --git a/src/vnet/ipsec/ipsec_output.c b/src/vnet/ipsec/ipsec_output.c
index 760d0921f67..d2eb412bb18 100644
--- a/src/vnet/ipsec/ipsec_output.c
+++ b/src/vnet/ipsec/ipsec_output.c
@@ -21,6 +21,7 @@
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/ipsec_io.h>
+#include <vnet/ipsec/ipsec_output.h>
#define foreach_ipsec_output_error \
_(RX_PKTS, "IPSec pkts received") \
@@ -63,151 +64,6 @@ format_ipsec_output_trace (u8 * s, va_list * args)
return s;
}
-always_inline void
-ipsec4_out_spd_add_flow_cache_entry (ipsec_main_t *im, u8 pr, u32 la, u32 ra,
- u16 lp, u16 rp, u32 pol_id)
-{
- u64 hash;
- u8 overwrite = 0, stale_overwrite = 0;
- ipsec4_spd_5tuple_t ip4_5tuple = { .ip4_addr = { (ip4_address_t) la,
- (ip4_address_t) ra },
- .port = { lp, rp },
- .proto = pr };
-
- ip4_5tuple.kv_16_8.value = (((u64) pol_id) << 32) | ((u64) im->epoch_count);
-
- hash = ipsec4_hash_16_8 (&ip4_5tuple.kv_16_8);
- hash &= (im->ipsec4_out_spd_hash_num_buckets - 1);
-
- ipsec_spinlock_lock (&im->ipsec4_out_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 also 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 */
- overwrite = (im->ipsec4_out_spd_hash_tbl[hash].value != 0);
- /* Check for stale entry by comparing with current epoch count */
- if (PREDICT_FALSE (overwrite))
- stale_overwrite =
- (im->epoch_count !=
- ((u32) (im->ipsec4_out_spd_hash_tbl[hash].value & 0xFFFFFFFF)));
- clib_memcpy_fast (&im->ipsec4_out_spd_hash_tbl[hash], &ip4_5tuple.kv_16_8,
- sizeof (ip4_5tuple.kv_16_8));
- ipsec_spinlock_unlock (&im->ipsec4_out_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 (!overwrite || stale_overwrite)
- clib_atomic_fetch_add_relax (&im->ipsec4_out_spd_flow_cache_entries, 1);
-
- return;
-}
-
-always_inline ipsec_policy_t *
-ipsec4_out_spd_find_flow_cache_entry (ipsec_main_t *im, u8 pr, u32 la, u32 ra,
- u16 lp, u16 rp)
-{
- ipsec_policy_t *p = NULL;
- ipsec4_hash_kv_16_8_t kv_result;
- u64 hash;
-
- if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) &&
- (pr != IP_PROTOCOL_SCTP)))
- {
- lp = 0;
- rp = 0;
- }
- ipsec4_spd_5tuple_t ip4_5tuple = { .ip4_addr = { (ip4_address_t) la,
- (ip4_address_t) ra },
- .port = { lp, rp },
- .proto = pr };
-
- hash = ipsec4_hash_16_8 (&ip4_5tuple.kv_16_8);
- hash &= (im->ipsec4_out_spd_hash_num_buckets - 1);
-
- ipsec_spinlock_lock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock);
- kv_result = im->ipsec4_out_spd_hash_tbl[hash];
- ipsec_spinlock_unlock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock);
-
- if (ipsec4_hash_key_compare_16_8 ((u64 *) &ip4_5tuple.kv_16_8,
- (u64 *) &kv_result))
- {
- if (im->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 p;
-}
-
-always_inline ipsec_policy_t *
-ipsec_output_policy_match (ipsec_spd_t *spd, u8 pr, u32 la, u32 ra, u16 lp,
- u16 rp, u8 flow_cache_enabled)
-{
- ipsec_main_t *im = &ipsec_main;
- ipsec_policy_t *p;
- u32 *i;
-
- if (!spd)
- return 0;
-
- vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP4_OUTBOUND])
- {
- p = pool_elt_at_index (im->policies, *i);
- if (PREDICT_FALSE ((p->protocol != IPSEC_POLICY_PROTOCOL_ANY) &&
- (p->protocol != pr)))
- continue;
-
- if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32))
- continue;
-
- if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32))
- continue;
-
- if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32))
- continue;
-
- if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32))
- continue;
-
- if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) &&
- (pr != IP_PROTOCOL_SCTP)))
- {
- lp = 0;
- rp = 0;
- goto add_flow_cache;
- }
-
- if (lp < p->lport.start)
- continue;
-
- if (lp > p->lport.stop)
- continue;
-
- if (rp < p->rport.start)
- continue;
-
- if (rp > p->rport.stop)
- continue;
-
- add_flow_cache:
- if (flow_cache_enabled)
- {
- /* Add an Entry in Flow cache */
- ipsec4_out_spd_add_flow_cache_entry (
- im, pr, clib_host_to_net_u32 (la), clib_host_to_net_u32 (ra),
- clib_host_to_net_u16 (lp), clib_host_to_net_u16 (rp), *i);
- }
-
- return p;
- }
- return 0;
-}
-
always_inline uword
ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la,
ip6_address_t * ua)
@@ -225,6 +81,7 @@ ipsec6_output_policy_match (ipsec_spd_t * spd,
{
ipsec_main_t *im = &ipsec_main;
ipsec_policy_t *p;
+
u32 *i;
if (!spd)
diff --git a/src/vnet/ipsec/ipsec_output.h b/src/vnet/ipsec/ipsec_output.h
new file mode 100644
index 00000000000..63d97c0696b
--- /dev/null
+++ b/src/vnet/ipsec/ipsec_output.h
@@ -0,0 +1,169 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2021 Intel 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 IPSEC_OUTPUT_H
+#define IPSEC_OUTPUT_H
+
+#include <vppinfra/types.h>
+#include <vnet/ipsec/ipsec_spd.h>
+
+always_inline void
+ipsec4_out_spd_add_flow_cache_entry (ipsec_main_t *im, u8 pr, u32 la, u32 ra,
+ u16 lp, u16 rp, u32 pol_id)
+{
+ u64 hash;
+ u8 overwrite = 0, stale_overwrite = 0;
+ ipsec4_spd_5tuple_t ip4_5tuple = { .ip4_addr = { (ip4_address_t) la,
+ (ip4_address_t) ra },
+ .port = { lp, rp },
+ .proto = pr };
+
+ ip4_5tuple.kv_16_8.value = (((u64) pol_id) << 32) | ((u64) im->epoch_count);
+
+ hash = ipsec4_hash_16_8 (&ip4_5tuple.kv_16_8);
+ hash &= (im->ipsec4_out_spd_hash_num_buckets - 1);
+
+ ipsec_spinlock_lock (&im->ipsec4_out_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 also 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 */
+ overwrite = (im->ipsec4_out_spd_hash_tbl[hash].value != 0);
+ /* Check for stale entry by comparing with current epoch count */
+ if (PREDICT_FALSE (overwrite))
+ stale_overwrite =
+ (im->epoch_count !=
+ ((u32) (im->ipsec4_out_spd_hash_tbl[hash].value & 0xFFFFFFFF)));
+ clib_memcpy_fast (&im->ipsec4_out_spd_hash_tbl[hash], &ip4_5tuple.kv_16_8,
+ sizeof (ip4_5tuple.kv_16_8));
+ ipsec_spinlock_unlock (&im->ipsec4_out_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 (!overwrite || stale_overwrite)
+ clib_atomic_fetch_add_relax (&im->ipsec4_out_spd_flow_cache_entries, 1);
+
+ return;
+}
+
+always_inline ipsec_policy_t *
+ipsec4_out_spd_find_flow_cache_entry (ipsec_main_t *im, u8 pr, u32 la, u32 ra,
+ u16 lp, u16 rp)
+{
+ ipsec_policy_t *p = NULL;
+ ipsec4_hash_kv_16_8_t kv_result;
+ u64 hash;
+
+ if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) &&
+ (pr != IP_PROTOCOL_SCTP)))
+ {
+ lp = 0;
+ rp = 0;
+ }
+ ipsec4_spd_5tuple_t ip4_5tuple = { .ip4_addr = { (ip4_address_t) la,
+ (ip4_address_t) ra },
+ .port = { lp, rp },
+ .proto = pr };
+
+ hash = ipsec4_hash_16_8 (&ip4_5tuple.kv_16_8);
+ hash &= (im->ipsec4_out_spd_hash_num_buckets - 1);
+
+ ipsec_spinlock_lock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock);
+ kv_result = im->ipsec4_out_spd_hash_tbl[hash];
+ ipsec_spinlock_unlock (&im->ipsec4_out_spd_hash_tbl[hash].bucket_lock);
+
+ if (ipsec4_hash_key_compare_16_8 ((u64 *) &ip4_5tuple.kv_16_8,
+ (u64 *) &kv_result))
+ {
+ if (im->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 p;
+}
+
+always_inline ipsec_policy_t *
+ipsec_output_policy_match (ipsec_spd_t *spd, u8 pr, u32 la, u32 ra, u16 lp,
+ u16 rp, u8 flow_cache_enabled)
+{
+ ipsec_main_t *im = &ipsec_main;
+ ipsec_policy_t *p;
+ u32 *i;
+
+ if (!spd)
+ return 0;
+
+ vec_foreach (i, spd->policies[IPSEC_SPD_POLICY_IP4_OUTBOUND])
+ {
+ p = pool_elt_at_index (im->policies, *i);
+ if (PREDICT_FALSE ((p->protocol != IPSEC_POLICY_PROTOCOL_ANY) &&
+ (p->protocol != pr)))
+ continue;
+
+ if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32))
+ continue;
+
+ if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32))
+ continue;
+
+ if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32))
+ continue;
+
+ if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32))
+ continue;
+
+ if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP) &&
+ (pr != IP_PROTOCOL_SCTP)))
+ {
+ lp = 0;
+ rp = 0;
+ goto add_flow_cache;
+ }
+
+ if (lp < p->lport.start)
+ continue;
+
+ if (lp > p->lport.stop)
+ continue;
+
+ if (rp < p->rport.start)
+ continue;
+
+ if (rp > p->rport.stop)
+ continue;
+
+ add_flow_cache:
+ if (flow_cache_enabled)
+ {
+ /* Add an Entry in Flow cache */
+ ipsec4_out_spd_add_flow_cache_entry (
+ im, pr, clib_host_to_net_u32 (la), clib_host_to_net_u32 (ra),
+ clib_host_to_net_u16 (lp), clib_host_to_net_u16 (rp), *i);
+ }
+
+ return p;
+ }
+ return 0;
+}
+
+#endif /* !IPSEC_OUTPUT_H */