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authorMartin Gálik <magalik@cisco.com>2017-04-25 01:25:08 -0700
committerMartin Gálik <magalik@cisco.com>2017-04-26 05:17:42 -0700
commit9806eae1f5f3953f7ac2c5bd07061a94387d757e (patch)
tree7eb4650f32e7bd0e157f3e1cd12213f366f78151
parent6bc8c6493c8e7e1401130f8c9ca34c9b2915a7ad (diff)
CGN: Session dump, test naming for ports fixed
Change-Id: Ib542b2b3ee023fbe3d0e01ceaf4b4ab7a0ec80dc Signed-off-by: Martin Gálik <magalik@cisco.com>
-rw-r--r--src/plugins/snat/snat.api35
-rw-r--r--src/plugins/snat/snat.c69
-rw-r--r--src/plugins/snat/snat_test.c52
-rw-r--r--test/test_snat.py98
-rw-r--r--test/vpp_papi_provider.py15
5 files changed, 226 insertions, 43 deletions
diff --git a/src/plugins/snat/snat.api b/src/plugins/snat/snat.api
index 5990eae5a24..e92675de867 100644
--- a/src/plugins/snat/snat.api
+++ b/src/plugins/snat/snat.api
@@ -565,3 +565,38 @@ autoreply define snat_det_close_session_in {
u8 ext_addr[16];
u16 ext_port;
};
+
+/** \brief Dump S-NAT deterministic sessions
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_ip4 - 1 if address type is IPv4
+ @param user_addr - address of an inside user whose sessions to dump
+*/
+define snat_det_session_dump {
+ u32 client_index;
+ u32 context;
+ u8 is_ip4;
+ u8 user_addr[16];
+};
+
+/** \brief S-NAT deterministic sessions reply
+ @param context - sender context, to match reply w/ request
+ @param is_ip4 - 1 if address type is IPv4
+ @param in_port - inside port
+ @param ext_addr - external host address
+ @param ext_port - external host port
+ @param out_port - outside NAT port
+ @param state - session state
+ @param expire - session expiration timestamp
+*/
+define snat_det_session_details {
+ u32 client_index;
+ u32 context;
+ u8 is_ip4;
+ u16 in_port;
+ u8 ext_addr[16];
+ u16 ext_port;
+ u16 out_port;
+ u8 state;
+ u32 expire;
+};
diff --git a/src/plugins/snat/snat.c b/src/plugins/snat/snat.c
index 594afa62c80..c6783e47b6d 100644
--- a/src/plugins/snat/snat.c
+++ b/src/plugins/snat/snat.c
@@ -1811,6 +1811,72 @@ static void *vl_api_snat_det_close_session_in_t_print
FINISH;
}
+static void
+send_snat_det_session_details
+(snat_det_session_t * s, unix_shared_memory_queue_t * q, u32 context)
+{
+ vl_api_snat_det_session_details_t * rmp;
+ snat_main_t * sm = &snat_main;
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_SNAT_DET_SESSION_DETAILS+sm->msg_id_base);
+ rmp->is_ip4 = 1;
+ rmp->in_port = s->in_port;
+ clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
+ rmp->ext_port = s->out.ext_host_port;
+ rmp->out_port = s->out.out_port;
+ rmp->state = s->state;
+ rmp->expire = ntohl (s->expire);
+ rmp->context = context;
+
+ vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_snat_det_session_dump_t_handler
+(vl_api_snat_det_session_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ snat_main_t * sm = &snat_main;
+ ip4_address_t user_addr;
+ snat_det_map_t * dm;
+ snat_det_session_t * s, empty_ses;
+ u16 i;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ return;
+ if (!mp->is_ip4)
+ return;
+
+ memset (&empty_ses, 0, sizeof (empty_ses));
+ clib_memcpy (&user_addr, mp->user_addr, 4);
+ dm = snat_det_map_by_user (sm, &user_addr);
+ if (!dm)
+ return;
+
+ s = dm->sessions + snat_det_user_ses_offset (&user_addr, dm->in_plen);
+ for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
+ {
+ if (s->out.as_u64)
+ send_snat_det_session_details (s, q, mp->context);
+ s++;
+ }
+}
+
+static void *vl_api_snat_det_session_dump_t_print
+(vl_api_snat_det_session_dump_t * mp, void * handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: snat_det_session_dump ");
+ s = format (s, "user_addr %U\n",
+ format_ip4_address, mp->user_addr);
+
+ FINISH;
+}
+
/* List of message types that this plugin understands */
#define foreach_snat_plugin_api_msg \
_(SNAT_ADD_ADDRESS_RANGE, snat_add_address_range) \
@@ -1835,7 +1901,8 @@ _(SNAT_DET_MAP_DUMP, snat_det_map_dump) \
_(SNAT_DET_SET_TIMEOUTS, snat_det_set_timeouts) \
_(SNAT_DET_GET_TIMEOUTS, snat_det_get_timeouts) \
_(SNAT_DET_CLOSE_SESSION_OUT, snat_det_close_session_out) \
-_(SNAT_DET_CLOSE_SESSION_IN, snat_det_close_session_in)
+_(SNAT_DET_CLOSE_SESSION_IN, snat_det_close_session_in) \
+_(SNAT_DET_SESSION_DUMP, snat_det_session_dump)
/* Set up the API message handling tables */
diff --git a/src/plugins/snat/snat_test.c b/src/plugins/snat/snat_test.c
index 14e8d1990b7..905b8fac66c 100644
--- a/src/plugins/snat/snat_test.c
+++ b/src/plugins/snat/snat_test.c
@@ -121,7 +121,8 @@ _(SNAT_DET_GET_TIMEOUTS_REPLY, snat_det_get_timeouts_reply) \
_(SNAT_DET_CLOSE_SESSION_OUT_REPLY, \
snat_det_close_session_out_reply) \
_(SNAT_DET_CLOSE_SESSION_IN_REPLY, \
- snat_det_close_session_in_reply)
+ snat_det_close_session_in_reply) \
+_(SNAT_DET_SESSION_DETAILS, snat_det_session_details)
static int api_snat_add_address_range (vat_main_t * vam)
{
@@ -1033,6 +1034,52 @@ static int api_snat_det_close_session_in (vat_main_t * vam)
return ret;
}
+static void vl_api_snat_det_session_details_t_handler
+ (vl_api_snat_det_session_details_t *mp)
+{
+ snat_test_main_t * sm = &snat_test_main;
+ vat_main_t *vam = sm->vat_main;
+
+ fformat(vam->ofp, "deterministic session, external host address %U, "
+ "external host port %d, outer port %d, inside port %d",
+ format_ip4_address, mp->ext_addr, mp->ext_port,
+ mp->out_port, mp->in_port);
+}
+
+static int api_snat_det_session_dump(vat_main_t * vam)
+{
+ unformat_input_t* i = vam->input;
+ vl_api_snat_det_session_dump_t * mp;
+ vl_api_snat_control_ping_t *mp_ping;
+ ip4_address_t user_addr;
+ int ret;
+
+ if (vam->json_output)
+ {
+ clib_warning ("JSON output not supported for snat_det_session_dump");
+ return -99;
+ }
+
+ if (unformat (i, "user_addr %U", unformat_ip4_address, &user_addr))
+ ;
+ else
+ {
+ clib_warning ("unknown input '%U'", format_unformat_error, i);
+ return -99;
+ }
+
+ M(SNAT_DET_SESSION_DUMP, mp);
+ clib_memcpy (&mp->user_addr, &user_addr, 4);
+ S(mp);
+
+ /* Use a control ping for synchronization */
+ M(SNAT_CONTROL_PING, mp_ping);
+ S(mp_ping);
+
+ W (ret);
+ return ret;
+}
+
/*
* List of messages that the api test plugin sends,
* and that the data plane plugin processes
@@ -1069,7 +1116,8 @@ _(snat_det_get_timeouts, "") \
_(snat_det_close_session_out, "<out_addr>:<out_port> " \
"<ext_addr>:<ext_port>") \
_(snat_det_close_session_in, "<in_addr>:<in_port> " \
- "<out_addr>:<out_port>")
+ "<out_addr>:<out_port>") \
+_(snat_det_session_dump, "ip_address <user_addr>")
static void
snat_vat_api_hookup (vat_main_t *vam)
diff --git a/test/test_snat.py b/test/test_snat.py
index fe5af418aea..f90d9067850 100644
--- a/test/test_snat.py
+++ b/test/test_snat.py
@@ -1332,9 +1332,9 @@ class TestDeterministicNAT(MethodHolder):
try:
cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
+ cls.tcp_external_port = 6303
cls.udp_port_in = 6304
- cls.udp_port_out = 6304
+ cls.udp_external_port = 6304
cls.icmp_id_in = 6305
cls.snat_addr = '10.0.0.3'
@@ -1365,13 +1365,13 @@ class TestDeterministicNAT(MethodHolder):
# TCP
p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out))
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port))
pkts.append(p)
# UDP
p = (Ether(dst=in_if.local_mac, src=in_if.remote_mac) /
IP(src=in_if.remote_ip4, dst=out_if.remote_ip4, ttl=ttl) /
- UDP(sport=self.udp_port_in, dport=self.udp_port_out))
+ UDP(sport=self.udp_port_in, dport=self.udp_external_port))
pkts.append(p)
# ICMP
@@ -1396,13 +1396,13 @@ class TestDeterministicNAT(MethodHolder):
# TCP
p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- TCP(dport=self.tcp_external_port, sport=self.tcp_port_out))
+ TCP(dport=self.tcp_port_out, sport=self.tcp_external_port))
pkts.append(p)
# UDP
p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
IP(src=out_if.remote_ip4, dst=dst_ip, ttl=ttl) /
- UDP(dport=self.udp_external_port, sport=self.udp_port_out))
+ UDP(dport=self.udp_port_out, sport=self.udp_external_port))
pkts.append(p)
# ICMP
@@ -1429,9 +1429,9 @@ class TestDeterministicNAT(MethodHolder):
try:
self.assertEqual(packet[IP].src, nat_ip)
if packet.haslayer(TCP):
- self.tcp_external_port = packet[TCP].sport
+ self.tcp_port_out = packet[TCP].sport
elif packet.haslayer(UDP):
- self.udp_external_port = packet[UDP].sport
+ self.udp_port_out = packet[UDP].sport
else:
self.icmp_external_id = packet[ICMP].id
except:
@@ -1450,19 +1450,19 @@ class TestDeterministicNAT(MethodHolder):
# SYN packet in->out
p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out,
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
flags="S"))
in_if.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = out_if.get_capture(1)
p = capture[0]
- self.tcp_external_port = p[TCP].sport
+ self.tcp_port_out = p[TCP].sport
# SYN + ACK packet out->in
p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) /
IP(src=out_if.remote_ip4, dst=self.snat_addr) /
- TCP(sport=self.tcp_port_out, dport=self.tcp_external_port,
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
flags="SA"))
out_if.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
@@ -1472,7 +1472,7 @@ class TestDeterministicNAT(MethodHolder):
# ACK packet in->out
p = (Ether(src=in_if.remote_mac, dst=in_if.local_mac) /
IP(src=in_if.remote_ip4, dst=out_if.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out,
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
flags="A"))
in_if.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
@@ -1553,12 +1553,6 @@ class TestDeterministicNAT(MethodHolder):
""" CGNAT translation test (TCP, UDP, ICMP) """
nat_ip = "10.0.0.10"
- self.tcp_port_out = 6303
- self.udp_port_out = 6304
- self.icmp_id_in = 6305
- self.tcp_external_port = 7303
- self.udp_external_port = 7304
- self.icmp_id_out = 7305
self.vapi.snat_add_det_map(self.pg0.remote_ip4n,
32,
@@ -1584,12 +1578,36 @@ class TestDeterministicNAT(MethodHolder):
capture = self.pg0.get_capture(len(pkts))
self.verify_capture_in(capture, self.pg0)
+ # session dump test
+ sessions = self.vapi.snat_det_session_dump(self.pg0.remote_ip4n)
+ self.assertEqual(len(sessions), 3)
+
+ # TCP session
+ s = sessions[0]
+ self.assertEqual(s.ext_addr[:4], self.pg1.remote_ip4n)
+ self.assertEqual(s.in_port, self.tcp_port_in)
+ self.assertEqual(s.out_port, self.tcp_port_out)
+ self.assertEqual(s.ext_port, self.tcp_external_port)
+
+ # UDP session
+ s = sessions[1]
+ self.assertEqual(s.ext_addr[:4], self.pg1.remote_ip4n)
+ self.assertEqual(s.in_port, self.udp_port_in)
+ self.assertEqual(s.out_port, self.udp_port_out)
+ self.assertEqual(s.ext_port, self.udp_external_port)
+
+ # ICMP session
+ s = sessions[2]
+ self.assertEqual(s.ext_addr[:4], self.pg1.remote_ip4n)
+ self.assertEqual(s.in_port, self.icmp_id_in)
+ self.assertEqual(s.out_port, self.icmp_external_id)
+
def test_multiple_users(self):
""" CGNAT multiple users """
nat_ip = "10.0.0.10"
port_in = 80
- port_out = 6303
+ external_port = 6303
host0 = self.pg0.remote_hosts[0]
host1 = self.pg0.remote_hosts[1]
@@ -1605,7 +1623,7 @@ class TestDeterministicNAT(MethodHolder):
# host0 to out
p = (Ether(src=host0.mac, dst=self.pg0.local_mac) /
IP(src=host0.ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=port_in, dport=port_out))
+ TCP(sport=port_in, dport=external_port))
self.pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
@@ -1616,8 +1634,8 @@ class TestDeterministicNAT(MethodHolder):
tcp = p[TCP]
self.assertEqual(ip.src, nat_ip)
self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.dport, port_out)
- external_port0 = tcp.sport
+ self.assertEqual(tcp.dport, external_port)
+ port_out0 = tcp.sport
except:
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
@@ -1625,7 +1643,7 @@ class TestDeterministicNAT(MethodHolder):
# host1 to out
p = (Ether(src=host1.mac, dst=self.pg0.local_mac) /
IP(src=host1.ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=port_in, dport=port_out))
+ TCP(sport=port_in, dport=external_port))
self.pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
@@ -1636,8 +1654,8 @@ class TestDeterministicNAT(MethodHolder):
tcp = p[TCP]
self.assertEqual(ip.src, nat_ip)
self.assertEqual(ip.dst, self.pg1.remote_ip4)
- self.assertEqual(tcp.dport, port_out)
- external_port1 = tcp.sport
+ self.assertEqual(tcp.dport, external_port)
+ port_out1 = tcp.sport
except:
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
@@ -1649,7 +1667,7 @@ class TestDeterministicNAT(MethodHolder):
# out to host0
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
IP(src=self.pg1.remote_ip4, dst=nat_ip) /
- TCP(sport=port_out, dport=external_port0))
+ TCP(sport=external_port, dport=port_out0))
self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
@@ -1661,7 +1679,7 @@ class TestDeterministicNAT(MethodHolder):
self.assertEqual(ip.src, self.pg1.remote_ip4)
self.assertEqual(ip.dst, host0.ip4)
self.assertEqual(tcp.dport, port_in)
- self.assertEqual(tcp.sport, port_out)
+ self.assertEqual(tcp.sport, external_port)
except:
self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
@@ -1669,7 +1687,7 @@ class TestDeterministicNAT(MethodHolder):
# out to host1
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
IP(src=self.pg1.remote_ip4, dst=nat_ip) /
- TCP(sport=port_out, dport=external_port1))
+ TCP(sport=external_port, dport=port_out1))
self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
@@ -1681,23 +1699,23 @@ class TestDeterministicNAT(MethodHolder):
self.assertEqual(ip.src, self.pg1.remote_ip4)
self.assertEqual(ip.dst, host1.ip4)
self.assertEqual(tcp.dport, port_in)
- self.assertEqual(tcp.sport, port_out)
+ self.assertEqual(tcp.sport, external_port)
except:
self.logger.error(ppp("Unexpected or invalid packet", p))
raise
# session close api test
self.vapi.snat_det_close_session_out(socket.inet_aton(nat_ip),
- external_port1,
+ port_out1,
self.pg1.remote_ip4n,
- port_out)
+ external_port)
dms = self.vapi.snat_det_map_dump()
self.assertEqual(dms[0].ses_num, 1)
self.vapi.snat_det_close_session_in(host0.ip4n,
port_in,
self.pg1.remote_ip4n,
- port_out)
+ external_port)
dms = self.vapi.snat_det_map_dump()
self.assertEqual(dms[0].ses_num, 0)
@@ -1718,7 +1736,7 @@ class TestDeterministicNAT(MethodHolder):
# FIN packet in -> out
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out,
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
flags="F"))
self.pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
@@ -1730,14 +1748,14 @@ class TestDeterministicNAT(MethodHolder):
# ACK packet out -> in
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
- TCP(sport=self.tcp_port_out, dport=self.tcp_external_port,
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
flags="A"))
pkts.append(p)
# FIN packet out -> in
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
- TCP(sport=self.tcp_port_out, dport=self.tcp_external_port,
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
flags="F"))
pkts.append(p)
@@ -1749,7 +1767,7 @@ class TestDeterministicNAT(MethodHolder):
# ACK packet in -> out
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out,
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
flags="A"))
self.pg0.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
@@ -1780,7 +1798,7 @@ class TestDeterministicNAT(MethodHolder):
# FIN packet out -> in
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
- TCP(sport=self.tcp_port_out, dport=self.tcp_external_port,
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
flags="F"))
self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
@@ -1792,14 +1810,14 @@ class TestDeterministicNAT(MethodHolder):
# ACK packet in -> out
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out,
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
flags="A"))
pkts.append(p)
# ACK packet in -> out
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
- TCP(sport=self.tcp_port_in, dport=self.tcp_port_out,
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
flags="F"))
pkts.append(p)
@@ -1811,7 +1829,7 @@ class TestDeterministicNAT(MethodHolder):
# ACK packet out -> in
p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
- TCP(sport=self.tcp_port_out, dport=self.tcp_external_port,
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
flags="A"))
self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index a485cefcf96..d94c0cb6207 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -1272,6 +1272,21 @@ class VppPapiProvider(object):
'ext_port': ext_port,
'is_ip4': is_ip4})
+ def snat_det_session_dump(
+ self,
+ user_addr,
+ is_ip4=1):
+ """Dump S-NAT deterministic sessions belonging to a user
+
+ :param user_addr - inside IP address of the user
+ :param is_ip4: - 1 if address type is IPv4 (Default value = 1)
+ :return: Dictionary of S-NAT deterministic sessions
+ """
+ return self.api(
+ self.papi.snat_det_session_dump,
+ {'is_ip4': is_ip4,
+ 'user_addr': user_addr})
+
def control_ping(self):
self.api(self.papi.control_ping)