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authorMohsin Kazmi <sykazmi@cisco.com>2019-04-16 15:15:07 +0200
committerNeale Ranns <nranns@cisco.com>2019-04-16 20:08:33 +0000
commite60dfd7acaae0e6bc8eaeb7d1cc75755d4cf01bc (patch)
treebea21e17703b3c015e715df0fe293df2074ba915
parent22bc2c46e316dd7d5ca4680f85337fe72896ca57 (diff)
gbp: Add support for allow sclass/dclass 1
Change-Id: I51f61a399e3eace93011f9431cbd7968e9be627c Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
-rw-r--r--src/plugins/gbp/gbp_contract.h1
-rw-r--r--src/plugins/gbp/gbp_policy_dpo.c18
-rw-r--r--src/plugins/gbp/gbp_policy_node.c22
-rw-r--r--test/test_gbp.py40
4 files changed, 76 insertions, 5 deletions
diff --git a/src/plugins/gbp/gbp_contract.h b/src/plugins/gbp/gbp_contract.h
index c6e9721848e..9de52eb9806 100644
--- a/src/plugins/gbp/gbp_contract.h
+++ b/src/plugins/gbp/gbp_contract.h
@@ -22,6 +22,7 @@
_(ALLOW_NO_SCLASS, "allow-no-sclass") \
_(ALLOW_INTRA, "allow-intra-sclass") \
_(ALLOW_A_BIT, "allow-a-bit-set") \
+ _(ALLOW_SCLASS_1, "allow-sclass-1") \
_(ALLOW_CONTRACT, "allow-contract") \
_(DROP_CONTRACT, "drop-contract") \
_(DROP_ETHER_TYPE, "drop-ether-type") \
diff --git a/src/plugins/gbp/gbp_policy_dpo.c b/src/plugins/gbp/gbp_policy_dpo.c
index a6194df6836..a7077899fd8 100644
--- a/src/plugins/gbp/gbp_policy_dpo.c
+++ b/src/plugins/gbp/gbp_policy_dpo.c
@@ -270,12 +270,12 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
{
gbp_main_t *gm = &gbp_main;
u32 n_left_from, next_index, *from, *to_next, thread_index;
- u32 n_allow_intra, n_allow_a_bit;
+ u32 n_allow_intra, n_allow_a_bit, n_allow_sclass_1;
gbp_rule_t *gu;
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
- n_allow_intra = n_allow_a_bit = 0;
+ n_allow_intra = n_allow_a_bit = n_allow_sclass_1 = 0;
thread_index = vm->thread_index;
next_index = node->cached_next_index;
@@ -343,6 +343,16 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
n_allow_intra++;
action0 = 0;
}
+ else if (PREDICT_FALSE (key0.gck_src == 1 || key0.gck_dst == 1))
+ {
+ /*
+ * sclass or dclass 1 allowed
+ */
+ next0 = gpd0->gpd_dpo.dpoi_next_node;
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ n_allow_sclass_1++;
+ action0 = 0;
+ }
else
{
gci0 = gbp_contract_find (&key0);
@@ -449,7 +459,9 @@ gbp_policy_dpo_inline (vlib_main_t * vm,
vlib_node_increment_counter (vm, node->node_index,
GBP_POLICY_DPO_ERROR_ALLOW_A_BIT,
n_allow_a_bit);
-
+ vlib_node_increment_counter (vm, node->node_index,
+ GBP_POLICY_DPO_ERROR_ALLOW_SCLASS_1,
+ n_allow_sclass_1);
return from_frame->n_vectors;
}
diff --git a/src/plugins/gbp/gbp_policy_node.c b/src/plugins/gbp/gbp_policy_node.c
index 8fe1d7f6c0f..2cffc79cf2d 100644
--- a/src/plugins/gbp/gbp_policy_node.c
+++ b/src/plugins/gbp/gbp_policy_node.c
@@ -116,13 +116,13 @@ gbp_policy_inline (vlib_main_t * vm,
gbp_policy_main_t *gpm = &gbp_policy_main;
u32 n_left_from, *from, *to_next;
u32 next_index, thread_index;
- u32 n_allow_intra, n_allow_a_bit;
+ u32 n_allow_intra, n_allow_a_bit, n_allow_sclass_1;
next_index = 0;
n_left_from = frame->n_vectors;
from = vlib_frame_vector_args (frame);
thread_index = vm->thread_index;
- n_allow_intra = n_allow_a_bit = 0;
+ n_allow_intra = n_allow_a_bit = n_allow_sclass_1 = 0;
while (n_left_from > 0)
{
@@ -216,6 +216,21 @@ gbp_policy_inline (vlib_main_t * vm,
vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
n_allow_intra++;
}
+ else if (PREDICT_FALSE (key0.gck_src == 1 || key0.gck_dst == 1))
+ {
+ /*
+ * sclass or dclass 1 allowed
+ */
+ next0 =
+ vnet_l2_feature_next (b0,
+ gpm->l2_output_feat_next
+ [is_port_based],
+ (is_port_based ?
+ L2OUTPUT_FEAT_GBP_POLICY_PORT :
+ L2OUTPUT_FEAT_GBP_POLICY_MAC));
+ vnet_buffer2 (b0)->gbp.flags |= VXLAN_GBP_GPFLAGS_A;
+ n_allow_sclass_1++;
+ }
else
{
gci0 = gbp_contract_find (&key0);
@@ -377,6 +392,9 @@ gbp_policy_inline (vlib_main_t * vm,
GBP_POLICY_ERROR_ALLOW_INTRA, n_allow_intra);
vlib_node_increment_counter (vm, node->node_index,
GBP_POLICY_ERROR_ALLOW_A_BIT, n_allow_a_bit);
+ vlib_node_increment_counter (vm, node->node_index,
+ GBP_POLICY_ERROR_ALLOW_SCLASS_1,
+ n_allow_sclass_1);
return frame->n_vectors;
}
diff --git a/test/test_gbp.py b/test/test_gbp.py
index 73acfdf5346..44a9b396730 100644
--- a/test/test_gbp.py
+++ b/test/test_gbp.py
@@ -1814,6 +1814,30 @@ class TestGBP(VppTestCase):
mac=l['mac']))
#
+ # repeat in the other EPG
+ # there's no contract between 220 and 330, but the sclass is set to 1
+ # so the packet is cleared for delivery
+ #
+ for l in learnt:
+ # a packet with an sclass from a known EPG
+ p = (Ether(src=self.pg2.remote_mac,
+ dst=self.pg2.local_mac) /
+ IP(src=self.pg2.remote_hosts[1].ip4,
+ dst=self.pg2.local_ip4) /
+ UDP(sport=1234, dport=48879) /
+ VXLAN(vni=99, gpid=1, flags=0x88) /
+ Ether(src=l['mac'], dst=ep.mac) /
+ IP(src=l['ip'], dst=ep.ip4.address) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ rx = self.send_and_expect(self.pg2, p*65, self.pg0)
+
+ self.assertTrue(find_gbp_endpoint(self,
+ vx_tun_l2_1.sw_if_index,
+ mac=l['mac']))
+
+ #
# static EP cannot reach the learnt EPs since there is no contract
# only test 1 EP as the others could timeout
#
@@ -3667,6 +3691,22 @@ class TestGBP(VppTestCase):
#
# ping from host in remote to local external subnets
+ # there's no contract for this, but sclass is 1.
+ #
+ p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /
+ IP(src=self.pg7.remote_ip4, dst=self.pg7.local_ip4) /
+ UDP(sport=1234, dport=48879) /
+ VXLAN(vni=445, gpid=1, flags=0x88) /
+ Ether(src=self.pg0.remote_mac, dst=str(self.router_mac)) /
+ IP(src="10.222.0.1", dst="10.220.0.1") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ rxs = self.send_and_expect(self.pg7, p * 3, self.pg0)
+ self.assertFalse(find_gbp_endpoint(self, ip="10.222.0.1"))
+
+ #
+ # ping from host in remote to local external subnets
# there's no contract for this, but the A bit is set.
#
p = (Ether(src=self.pg7.remote_mac, dst=self.pg7.local_mac) /