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-rw-r--r--src/plugins/unittest/ipsec_test.c4
-rw-r--r--src/vnet/ipsec/ipsec_api.c11
-rw-r--r--src/vnet/ipsec/ipsec_cli.c10
-rw-r--r--src/vnet/ipsec/ipsec_format.c5
-rw-r--r--src/vnet/ipsec/ipsec_if.c75
-rw-r--r--src/vnet/ipsec/ipsec_sa.c148
-rw-r--r--src/vnet/ipsec/ipsec_sa.h34
-rw-r--r--src/vnet/ipsec/ipsec_spd_policy.c20
-rw-r--r--src/vnet/ipsec/ipsec_tun.c14
-rw-r--r--src/vnet/ipsec/ipsec_tun.h4
10 files changed, 158 insertions, 167 deletions
diff --git a/src/plugins/unittest/ipsec_test.c b/src/plugins/unittest/ipsec_test.c
index ec39a2e9042..c40e954786d 100644
--- a/src/plugins/unittest/ipsec_test.c
+++ b/src/plugins/unittest/ipsec_test.c
@@ -42,11 +42,13 @@ test_ipsec_command_fn (vlib_main_t * vm,
ipsec_sa_t *sa;
u32 sa_index;
- sa_index = ipsec_get_sa_index_by_sa_id (sa_id);
+ sa_index = ipsec_sa_find_and_lock (sa_id);
sa = pool_elt_at_index (im->sad, sa_index);
sa->seq = seq_num & 0xffffffff;
sa->seq_hi = seq_num >> 32;
+
+ ipsec_sa_unlock (sa_index);
}
else
{
diff --git a/src/vnet/ipsec/ipsec_api.c b/src/vnet/ipsec/ipsec_api.c
index 6de0203602e..371e4fe4ed0 100644
--- a/src/vnet/ipsec/ipsec_api.c
+++ b/src/vnet/ipsec/ipsec_api.c
@@ -513,12 +513,13 @@ static void vl_api_ipsec_sad_entry_add_del_t_handler
ip_address_decode (&mp->entry.tunnel_dst, &tun_dst);
if (mp->is_add)
- rv = ipsec_sa_add (id, spi, proto,
- crypto_alg, &crypto_key,
- integ_alg, &integ_key, flags,
- 0, mp->entry.salt, &tun_src, &tun_dst, &sa_index);
+ rv = ipsec_sa_add_and_lock (id, spi, proto,
+ crypto_alg, &crypto_key,
+ integ_alg, &integ_key, flags,
+ 0, mp->entry.salt, &tun_src, &tun_dst,
+ &sa_index);
else
- rv = ipsec_sa_del (id);
+ rv = ipsec_sa_unlock_id (id);
#else
rv = VNET_API_ERROR_UNIMPLEMENTED;
diff --git a/src/vnet/ipsec/ipsec_cli.c b/src/vnet/ipsec/ipsec_cli.c
index 60b9244589e..a5972bbf2c1 100644
--- a/src/vnet/ipsec/ipsec_cli.c
+++ b/src/vnet/ipsec/ipsec_cli.c
@@ -144,12 +144,12 @@ ipsec_sa_add_del_command_fn (vlib_main_t * vm,
}
if (is_add)
- rv = ipsec_sa_add (id, spi, proto, crypto_alg,
- &ck, integ_alg, &ik, flags,
- 0, clib_host_to_net_u32 (salt),
- &tun_src, &tun_dst, NULL);
+ rv = ipsec_sa_add_and_lock (id, spi, proto, crypto_alg,
+ &ck, integ_alg, &ik, flags,
+ 0, clib_host_to_net_u32 (salt),
+ &tun_src, &tun_dst, NULL);
else
- rv = ipsec_sa_del (id);
+ rv = ipsec_sa_unlock_id (id);
if (rv)
error = clib_error_return (0, "failed");
diff --git a/src/vnet/ipsec/ipsec_format.c b/src/vnet/ipsec/ipsec_format.c
index a0cd5ad67cf..0d596c0c973 100644
--- a/src/vnet/ipsec/ipsec_format.c
+++ b/src/vnet/ipsec/ipsec_format.c
@@ -285,8 +285,8 @@ format_ipsec_sa (u8 * s, va_list * args)
sa = pool_elt_at_index (im->sad, sai);
- s = format (s, "[%d] sa 0x%x spi %u (0x%08x) mode %s%s protocol %s %U",
- sai, sa->id, sa->spi, sa->spi,
+ s = format (s, "[%d] sa %d (0x%x) spi %u (0x%08x) mode %s%s protocol %s %U",
+ sai, sa->id, sa->id, sa->spi, sa->spi,
ipsec_sa_is_set_IS_TUNNEL (sa) ? "tunnel" : "transport",
ipsec_sa_is_set_IS_TUNNEL_V6 (sa) ? "-ip6" : "",
sa->protocol ? "esp" : "ah", format_ipsec_sa_flags, sa->flags);
@@ -294,6 +294,7 @@ format_ipsec_sa (u8 * s, va_list * args)
if (!(flags & IPSEC_FORMAT_DETAIL))
goto done;
+ s = format (s, "\n locks %d", sa->node.fn_locks);
s = format (s, "\n salt 0x%x", clib_net_to_host_u32 (sa->salt));
s = format (s, "\n seq %u seq-hi %u", sa->seq, sa->seq_hi);
s = format (s, "\n last-seq %u last-seq-hi %u window %U",
diff --git a/src/vnet/ipsec/ipsec_if.c b/src/vnet/ipsec/ipsec_if.c
index 8e4f3f1359d..5fc49e1af4e 100644
--- a/src/vnet/ipsec/ipsec_if.c
+++ b/src/vnet/ipsec/ipsec_if.c
@@ -321,18 +321,18 @@ ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
ipsec_mk_key (&integ_key,
args->remote_integ_key, args->remote_integ_key_len);
- rv = ipsec_sa_add (ipsec_tun_mk_input_sa_id (dev_instance),
- args->remote_spi,
- IPSEC_PROTOCOL_ESP,
- args->crypto_alg,
- &crypto_key,
- args->integ_alg,
- &integ_key,
- (flags | IPSEC_SA_FLAG_IS_INBOUND),
- args->tx_table_id,
- args->salt,
- &args->remote_ip,
- &args->local_ip, &t->input_sa_index);
+ rv = ipsec_sa_add_and_lock (ipsec_tun_mk_input_sa_id (dev_instance),
+ args->remote_spi,
+ IPSEC_PROTOCOL_ESP,
+ args->crypto_alg,
+ &crypto_key,
+ args->integ_alg,
+ &integ_key,
+ (flags | IPSEC_SA_FLAG_IS_INBOUND),
+ args->tx_table_id,
+ args->salt,
+ &args->remote_ip,
+ &args->local_ip, &t->input_sa_index);
if (rv)
return rv;
@@ -342,18 +342,18 @@ ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
ipsec_mk_key (&integ_key,
args->local_integ_key, args->local_integ_key_len);
- rv = ipsec_sa_add (ipsec_tun_mk_output_sa_id (dev_instance),
- args->local_spi,
- IPSEC_PROTOCOL_ESP,
- args->crypto_alg,
- &crypto_key,
- args->integ_alg,
- &integ_key,
- flags,
- args->tx_table_id,
- args->salt,
- &args->local_ip,
- &args->remote_ip, &t->output_sa_index);
+ rv = ipsec_sa_add_and_lock (ipsec_tun_mk_output_sa_id (dev_instance),
+ args->local_spi,
+ IPSEC_PROTOCOL_ESP,
+ args->crypto_alg,
+ &crypto_key,
+ args->integ_alg,
+ &integ_key,
+ flags,
+ args->tx_table_id,
+ args->salt,
+ &args->local_ip,
+ &args->remote_ip, &t->output_sa_index);
if (rv)
return rv;
@@ -420,11 +420,11 @@ ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm,
hash_unset (im->ipsec_if_real_dev_by_show_dev, t->show_instance);
im->ipsec_if_by_sw_if_index[t->sw_if_index] = ~0;
- pool_put (im->tunnel_interfaces, t);
-
/* delete input and output SA */
- ipsec_sa_del (ipsec_tun_mk_input_sa_id (ti));
- ipsec_sa_del (ipsec_tun_mk_output_sa_id (ti));
+ ipsec_sa_unlock (t->input_sa_index);
+ ipsec_sa_unlock (t->output_sa_index);
+
+ pool_put (im->tunnel_interfaces, t);
}
if (sw_if_index)
@@ -447,17 +447,12 @@ ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id,
hi = vnet_get_hw_interface (vnm, hw_if_index);
t = pool_elt_at_index (im->tunnel_interfaces, hi->dev_instance);
- sa_index = ipsec_get_sa_index_by_sa_id (sa_id);
- if (sa_index == ~0)
- {
- clib_warning ("SA with ID %u not found", sa_id);
- return VNET_API_ERROR_INVALID_VALUE;
- }
+ sa_index = ipsec_sa_find_and_lock (sa_id);
- if (ipsec_is_sa_used (sa_index))
+ if (INDEX_INVALID == sa_index)
{
- clib_warning ("SA with ID %u is already in use", sa_id);
- return VNET_API_ERROR_INVALID_VALUE;
+ clib_warning ("SA with ID %u not found", sa_id);
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
}
sa = pool_elt_at_index (im->sad, sa_index);
@@ -537,15 +532,15 @@ ipsec_set_interface_sa (vnet_main_t * vnm, u32 hw_if_index, u32 sa_id,
}
/* remove sa_id to sa_index mapping on old SA */
- if (ipsec_get_sa_index_by_sa_id (old_sa->id) == old_sa_index)
- hash_unset (im->sa_index_by_sa_id, old_sa->id);
+ hash_unset (im->sa_index_by_sa_id, old_sa->id);
if (ipsec_add_del_sa_sess_cb (im, old_sa_index, 0))
{
clib_warning ("IPsec backend add/del callback returned error");
return VNET_API_ERROR_SYSCALL_ERROR_1;
}
- ipsec_sa_del (old_sa->id);
+
+ ipsec_sa_unlock (old_sa_index);
return 0;
}
diff --git a/src/vnet/ipsec/ipsec_sa.c b/src/vnet/ipsec/ipsec_sa.c
index afdecfee10d..e3eff586906 100644
--- a/src/vnet/ipsec/ipsec_sa.c
+++ b/src/vnet/ipsec/ipsec_sa.c
@@ -123,18 +123,18 @@ ipsec_sa_set_integ_alg (ipsec_sa_t * sa, ipsec_integ_alg_t integ_alg)
}
int
-ipsec_sa_add (u32 id,
- u32 spi,
- ipsec_protocol_t proto,
- ipsec_crypto_alg_t crypto_alg,
- const ipsec_key_t * ck,
- ipsec_integ_alg_t integ_alg,
- const ipsec_key_t * ik,
- ipsec_sa_flags_t flags,
- u32 tx_table_id,
- u32 salt,
- const ip46_address_t * tun_src,
- const ip46_address_t * tun_dst, u32 * sa_out_index)
+ipsec_sa_add_and_lock (u32 id,
+ u32 spi,
+ ipsec_protocol_t proto,
+ ipsec_crypto_alg_t crypto_alg,
+ const ipsec_key_t * ck,
+ ipsec_integ_alg_t integ_alg,
+ const ipsec_key_t * ik,
+ ipsec_sa_flags_t flags,
+ u32 tx_table_id,
+ u32 salt,
+ const ip46_address_t * tun_src,
+ const ip46_address_t * tun_dst, u32 * sa_out_index)
{
vlib_main_t *vm = vlib_get_main ();
ipsec_main_t *im = &ipsec_main;
@@ -150,6 +150,7 @@ ipsec_sa_add (u32 id,
pool_get_aligned_zero (im->sad, sa, CLIB_CACHE_LINE_BYTES);
fib_node_init (&sa->node, FIB_NODE_TYPE_IPSEC_SA);
+ fib_node_lock (&sa->node);
sa_index = sa - im->sad;
vlib_validate_combined_counter (&ipsec_sa_counters, sa_index);
@@ -272,33 +273,18 @@ ipsec_sa_add (u32 id,
return (0);
}
-u32
-ipsec_sa_del (u32 id)
+static void
+ipsec_sa_del (ipsec_sa_t * sa)
{
vlib_main_t *vm = vlib_get_main ();
ipsec_main_t *im = &ipsec_main;
- ipsec_sa_t *sa = 0;
- uword *p;
u32 sa_index;
- clib_error_t *err;
-
- p = hash_get (im->sa_index_by_sa_id, id);
-
- if (!p)
- return VNET_API_ERROR_NO_SUCH_ENTRY;
- sa_index = p[0];
- sa = pool_elt_at_index (im->sad, sa_index);
- if (ipsec_is_sa_used (sa_index))
- {
- clib_warning ("sa_id %u used in policy", sa->id);
- /* sa used in policy */
- return VNET_API_ERROR_RSRC_IN_USE;
- }
+ sa_index = sa - im->sad;
hash_unset (im->sa_index_by_sa_id, sa->id);
- err = ipsec_call_add_del_callbacks (im, sa, sa_index, 0);
- if (err)
- return VNET_API_ERROR_SYSCALL_ERROR_2;
+
+ /* no recovery possible when deleting an SA */
+ (void) ipsec_call_add_del_callbacks (im, sa, sa_index, 0);
if (ipsec_sa_is_set_IS_TUNNEL (sa) && !ipsec_sa_is_set_IS_INBOUND (sa))
{
@@ -311,65 +297,61 @@ ipsec_sa_del (u32 id)
vnet_crypto_key_del (vm, sa->crypto_key_index);
vnet_crypto_key_del (vm, sa->integ_key_index);
pool_put (im->sad, sa);
- return 0;
}
void
-ipsec_sa_clear (index_t sai)
+ipsec_sa_unlock (index_t sai)
{
- vlib_zero_combined_counter (&ipsec_sa_counters, sai);
+ ipsec_main_t *im = &ipsec_main;
+ ipsec_sa_t *sa;
+
+ if (INDEX_INVALID == sai)
+ return;
+
+ sa = pool_elt_at_index (im->sad, sai);
+
+ fib_node_unlock (&sa->node);
}
-u8
-ipsec_is_sa_used (u32 sa_index)
+index_t
+ipsec_sa_find_and_lock (u32 id)
{
ipsec_main_t *im = &ipsec_main;
- ipsec_tun_protect_t *itp;
- ipsec_tunnel_if_t *t;
- ipsec_policy_t *p;
- u32 sai;
+ ipsec_sa_t *sa;
+ uword *p;
- /* *INDENT-OFF* */
- pool_foreach(p, im->policies, ({
- if (p->policy == IPSEC_POLICY_ACTION_PROTECT)
- {
- if (p->sa_index == sa_index)
- return 1;
- }
- }));
+ p = hash_get (im->sa_index_by_sa_id, id);
- pool_foreach(t, im->tunnel_interfaces, ({
- if (t->input_sa_index == sa_index)
- return 1;
- if (t->output_sa_index == sa_index)
- return 1;
- }));
+ if (!p)
+ return INDEX_INVALID;
- /* *INDENT-OFF* */
- pool_foreach(itp, ipsec_protect_pool, ({
- FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
- ({
- if (sai == sa_index)
- return 1;
- }));
- if (itp->itp_out_sa == sa_index)
- return 1;
- }));
- /* *INDENT-ON* */
+ sa = pool_elt_at_index (im->sad, p[0]);
+ fib_node_lock (&sa->node);
- return 0;
+ return (p[0]);
}
-u32
-ipsec_get_sa_index_by_sa_id (u32 sa_id)
+int
+ipsec_sa_unlock_id (u32 id)
{
ipsec_main_t *im = &ipsec_main;
- uword *p = hash_get (im->sa_index_by_sa_id, sa_id);
+ uword *p;
+
+ p = hash_get (im->sa_index_by_sa_id, id);
+
if (!p)
- return ~0;
+ return VNET_API_ERROR_NO_SUCH_ENTRY;
+
+ ipsec_sa_unlock (p[0]);
+
+ return (0);
+}
- return p[0];
+void
+ipsec_sa_clear (index_t sai)
+{
+ vlib_zero_combined_counter (&ipsec_sa_counters, sai);
}
void
@@ -402,6 +384,15 @@ ipsec_sa_fib_node_get (fib_node_index_t index)
return (&sa->node);
}
+static ipsec_sa_t *
+ipsec_sa_from_fib_node (fib_node_t * node)
+{
+ ASSERT (FIB_NODE_TYPE_IPSEC_SA == node->fn_type);
+ return ((ipsec_sa_t *) (((char *) node) -
+ STRUCT_OFFSET_OF (ipsec_sa_t, node)));
+
+}
+
/**
* Function definition to inform the FIB node that its last lock has gone.
*/
@@ -412,16 +403,7 @@ ipsec_sa_last_lock_gone (fib_node_t * node)
* The ipsec SA is a root of the graph. As such
* it never has children and thus is never locked.
*/
- ASSERT (0);
-}
-
-static ipsec_sa_t *
-ipsec_sa_from_fib_node (fib_node_t * node)
-{
- ASSERT (FIB_NODE_TYPE_IPSEC_SA == node->fn_type);
- return ((ipsec_sa_t *) (((char *) node) -
- STRUCT_OFFSET_OF (ipsec_sa_t, node)));
-
+ ipsec_sa_del (ipsec_sa_from_fib_node (node));
}
/**
diff --git a/src/vnet/ipsec/ipsec_sa.h b/src/vnet/ipsec/ipsec_sa.h
index 284826772a0..811f4cabcf0 100644
--- a/src/vnet/ipsec/ipsec_sa.h
+++ b/src/vnet/ipsec/ipsec_sa.h
@@ -140,7 +140,6 @@ typedef struct
};
udp_header_t udp_hdr;
-
fib_node_t node;
u32 id;
u32 stat_index;
@@ -198,29 +197,28 @@ extern vlib_combined_counter_main_t ipsec_sa_counters;
extern void ipsec_mk_key (ipsec_key_t * key, const u8 * data, u8 len);
-extern int ipsec_sa_add (u32 id,
- u32 spi,
- ipsec_protocol_t proto,
- ipsec_crypto_alg_t crypto_alg,
- const ipsec_key_t * ck,
- ipsec_integ_alg_t integ_alg,
- const ipsec_key_t * ik,
- ipsec_sa_flags_t flags,
- u32 tx_table_id,
- u32 salt,
- const ip46_address_t * tunnel_src_addr,
- const ip46_address_t * tunnel_dst_addr,
- u32 * sa_index);
-extern u32 ipsec_sa_del (u32 id);
+extern int ipsec_sa_add_and_lock (u32 id,
+ u32 spi,
+ ipsec_protocol_t proto,
+ ipsec_crypto_alg_t crypto_alg,
+ const ipsec_key_t * ck,
+ ipsec_integ_alg_t integ_alg,
+ const ipsec_key_t * ik,
+ ipsec_sa_flags_t flags,
+ u32 tx_table_id,
+ u32 salt,
+ const ip46_address_t * tunnel_src_addr,
+ const ip46_address_t * tunnel_dst_addr,
+ u32 * sa_index);
+extern index_t ipsec_sa_find_and_lock (u32 id);
+extern int ipsec_sa_unlock_id (u32 id);
+extern void ipsec_sa_unlock (index_t sai);
extern void ipsec_sa_clear (index_t sai);
extern void ipsec_sa_set_crypto_alg (ipsec_sa_t * sa,
ipsec_crypto_alg_t crypto_alg);
extern void ipsec_sa_set_integ_alg (ipsec_sa_t * sa,
ipsec_integ_alg_t integ_alg);
-extern u8 ipsec_is_sa_used (u32 sa_index);
-extern u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
-
typedef walk_rc_t (*ipsec_sa_walk_cb_t) (ipsec_sa_t * sa, void *ctx);
extern void ipsec_sa_walk (ipsec_sa_walk_cb_t cd, void *ctx);
diff --git a/src/vnet/ipsec/ipsec_spd_policy.c b/src/vnet/ipsec/ipsec_spd_policy.c
index 34b7dc2efca..6424210b4e3 100644
--- a/src/vnet/ipsec/ipsec_spd_policy.c
+++ b/src/vnet/ipsec/ipsec_spd_policy.c
@@ -142,14 +142,6 @@ ipsec_add_del_policy (vlib_main_t * vm,
u32 spd_index;
uword *p;
- if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
- {
- p = hash_get (im->sa_index_by_sa_id, policy->sa_id);
- if (!p)
- return VNET_API_ERROR_SYSCALL_ERROR_1;
- policy->sa_index = p[0];
- }
-
p = hash_get (im->spd_index_by_spd_id, policy->id);
if (!p)
@@ -164,6 +156,17 @@ ipsec_add_del_policy (vlib_main_t * vm,
{
u32 policy_index;
+ if (policy->policy == IPSEC_POLICY_ACTION_PROTECT)
+ {
+ index_t sa_index = ipsec_sa_find_and_lock (policy->sa_id);
+
+ if (INDEX_INVALID == sa_index)
+ return VNET_API_ERROR_SYSCALL_ERROR_1;
+ policy->sa_index = sa_index;
+ }
+ else
+ policy->sa_index = INDEX_INVALID;
+
pool_get (im->policies, vp);
clib_memcpy (vp, policy, sizeof (*vp));
policy_index = vp - im->policies;
@@ -188,6 +191,7 @@ ipsec_add_del_policy (vlib_main_t * vm,
if (ipsec_policy_is_equal (vp, policy))
{
vec_del1 (spd->policies[policy->type], ii);
+ ipsec_sa_unlock (vp->sa_index);
pool_put (im->policies, vp);
break;
}
diff --git a/src/vnet/ipsec/ipsec_tun.c b/src/vnet/ipsec/ipsec_tun.c
index a389cefc991..46980df101b 100644
--- a/src/vnet/ipsec/ipsec_tun.c
+++ b/src/vnet/ipsec/ipsec_tun.c
@@ -191,6 +191,7 @@ static void
ipsec_tun_protect_unconfig (ipsec_main_t * im, ipsec_tun_protect_t * itp)
{
ipsec_sa_t *sa;
+ index_t sai;
ipsec_tun_protect_feature_set (itp, 0);
@@ -199,9 +200,16 @@ ipsec_tun_protect_unconfig (ipsec_main_t * im, ipsec_tun_protect_t * itp)
({
ipsec_sa_unset_IS_PROTECT (sa);
}));
- /* *INDENT-ON* */
ipsec_tun_protect_db_remove (im, itp);
+
+ ipsec_sa_unlock(itp->itp_out_sa);
+
+ FOR_EACH_IPSEC_PROTECT_INPUT_SAI(itp, sai,
+ ({
+ ipsec_sa_unlock(sai);
+ }));
+ /* *INDENT-ON* */
}
index_t
@@ -229,7 +237,7 @@ ipsec_tun_protect_update (u32 sw_if_index, u32 sa_out, u32 * sas_in)
vec_foreach_index (ii, sas_in)
{
- sas_in[ii] = ipsec_get_sa_index_by_sa_id (sas_in[ii]);
+ sas_in[ii] = ipsec_sa_find_and_lock (sas_in[ii]);
if (~0 == sas_in[ii])
{
rv = VNET_API_ERROR_INVALID_VALUE;
@@ -237,7 +245,7 @@ ipsec_tun_protect_update (u32 sw_if_index, u32 sa_out, u32 * sas_in)
}
}
- sa_out = ipsec_get_sa_index_by_sa_id (sa_out);
+ sa_out = ipsec_sa_find_and_lock (sa_out);
if (~0 == sa_out)
{
diff --git a/src/vnet/ipsec/ipsec_tun.h b/src/vnet/ipsec/ipsec_tun.h
index be5cef9a8fc..2041cbe758b 100644
--- a/src/vnet/ipsec/ipsec_tun.h
+++ b/src/vnet/ipsec/ipsec_tun.h
@@ -32,12 +32,12 @@ typedef struct ipsec_ep_t_
typedef struct ipsec_tun_protect_t_
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
- u32 itp_out_sa;
+ index_t itp_out_sa;
/* not using a vector since we want the memory inline
* with this struct */
u32 itp_n_sa_in;
- u32 itp_in_sas[4];
+ index_t itp_in_sas[4];
u32 itp_sw_if_index;