#include <vlibmemory/api.h>
#include <cnat/cnat_node.h>
-#include <cnat/cnat_translation.h>
-
-#include <vnet/dpo/load_balance.h>
-#include <vnet/dpo/load_balance_map.h>
-
-typedef struct cnat_translation_trace_t_
-{
- cnat_session_t session;
- cnat_translation_t tr;
- u32 found_session;
- u32 created_session;
- u32 has_tr;
-} cnat_translation_trace_t;
+#include <cnat/cnat_inline.h>
+#include <cnat/cnat_src_policy.h>
typedef enum cnat_translation_next_t_
{
vlib_node_registration_t cnat_vip_ip4_node;
vlib_node_registration_t cnat_vip_ip6_node;
-static u8 *
-format_cnat_translation_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- cnat_translation_trace_t *t =
- va_arg (*args, cnat_translation_trace_t *);
-
- if (t->found_session)
- s = format (s, "found: %U", format_cnat_session, &t->session, 1);
- else if (t->created_session)
- s = format (s, "created: %U\n tr: %U",
- format_cnat_session, &t->session, 1,
- format_cnat_translation,
- &t->tr, 0);
- else if (t->has_tr)
- s = format (s, "tr pass: %U", format_cnat_translation,
- &t->tr, 0);
- else
- s = format (s, "not found");
- return s;
-}
-
/* CNat sub for NAT behind a fib entry (VIP or interposed real IP) */
-always_inline uword
-cnat_vip_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_buffer_t * b,
- cnat_node_ctx_t * ctx, int rv, cnat_session_t * session)
+static uword
+cnat_vip_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_buffer_t *b,
+ cnat_node_ctx_t *ctx, int session_not_found,
+ cnat_session_t *session)
{
vlib_combined_counter_main_t *cntm = &cnat_translation_counters;
+ cnat_src_policy_main_t *cspm = &cnat_src_policy_main;
const cnat_translation_t *ct = NULL;
ip4_header_t *ip4 = NULL;
ip_protocol_t iproto;
cnat_client_t *cc;
u16 next0;
index_t cti;
- int created_session = 0;
+ u8 trace_flags = 0;
+ int rv;
+
if (AF_IP4 == ctx->af)
{
ip4 = vlib_buffer_get_current (b);
cc = cnat_client_get (vnet_buffer (b)->ip.adj_index[VLIB_TX]);
- if (iproto != IP_PROTOCOL_UDP && iproto != IP_PROTOCOL_TCP
- && iproto != IP_PROTOCOL_ICMP && iproto != IP_PROTOCOL_ICMP6)
+ /* Wrong session key */
+ if (session->key.cs_proto == 0)
{
/* Dont translate & follow the fib programming */
next0 = cc->cc_parent.dpoi_next_node;
goto trace;
}
- ct = cnat_find_translation (cc->parent_cci,
- clib_host_to_net_u16 (udp0->dst_port),
- iproto);
-
- if (!rv)
+ if (!session_not_found)
{
/* session table hit */
cnat_timestamp_update (session->value.cs_ts_index, ctx->now);
- if (NULL != ct)
+ if (INDEX_INVALID != session->value.cs_lbi)
{
/* Translate & follow the translation given LB */
- next0 = ct->ct_lb.dpoi_next_node;
+ next0 = session->value.dpoi_next_node;
vnet_buffer (b)->ip.adj_index[VLIB_TX] = session->value.cs_lbi;
}
else if (session->value.flags & CNAT_SESSION_FLAG_HAS_SNAT)
}
else
{
+ ct =
+ cnat_find_translation (cc->parent_cci,
+ clib_host_to_net_u16 (udp0->dst_port), iproto);
if (NULL == ct)
{
/* Dont translate & Follow the fib programming */
}
/* New flow, create the sessions */
- const load_balance_t *lb0;
cnat_ep_trk_t *trk0;
- u32 hash_c0, bucket0;
u32 rsession_flags = 0;
- const dpo_id_t *dpo0;
+ u32 dpoi_index = -1;
- lb0 = load_balance_get (ct->ct_lb.dpoi_index);
- if (!lb0->lb_n_buckets)
+ trk0 = cnat_load_balance (ct, ctx->af, ip4, ip6, &dpoi_index);
+ if (PREDICT_FALSE (NULL == trk0))
{
/* Dont translate & Follow the fib programming */
vnet_buffer (b)->ip.adj_index[VLIB_TX] = cc->cc_parent.dpoi_index;
goto trace;
}
- /* session table miss */
- hash_c0 = (AF_IP4 == ctx->af ?
- ip4_compute_flow_hash (ip4, lb0->lb_hash_config) :
- ip6_compute_flow_hash (ip6, lb0->lb_hash_config));
- bucket0 = hash_c0 & lb0->lb_n_buckets_minus_1;
- dpo0 = load_balance_get_fwd_bucket (lb0, bucket0);
-
/* add the session */
- trk0 = &ct->ct_paths[bucket0];
-
ip46_address_copy (&session->value.cs_ip[VLIB_TX],
&trk0->ct_ep[VLIB_TX].ce_ip.ip);
if (ip_address_is_zero (&trk0->ct_ep[VLIB_RX].ce_ip))
session->value.cs_port[VLIB_RX] =
clib_host_to_net_u16 (trk0->ct_ep[VLIB_RX].ce_port);
+ session->value.dpoi_next_node = ct->ct_lb.dpoi_next_node;
+ session->value.cs_lbi = dpoi_index;
session->value.flags = 0;
- if (!session->value.cs_port[VLIB_RX])
+
+ rv = cspm->vip_policy (vm, b, session, &rsession_flags, ct, ctx);
+ if (CNAT_SOURCE_ERROR_USE_DEFAULT == rv)
+ rv = cspm->default_policy (vm, b, session, &rsession_flags, ct, ctx);
+ if (rv)
{
- u16 sport;
- sport = udp0->src_port;
- /* Allocate a port only if asked and if we actually sNATed */
- if ((ct->flags & CNAT_TRANSLATION_FLAG_ALLOCATE_PORT)
- && (rsession_flags & CNAT_SESSION_FLAG_HAS_SNAT)) {
- sport = 0; /* force allocation */
- session->value.flags |= CNAT_SESSION_FLAG_ALLOC_PORT;
- rv = cnat_allocate_port (&sport, iproto);
- if (rv)
- {
- vlib_node_increment_counter (vm, cnat_vip_ip4_node.index,
- CNAT_ERROR_EXHAUSTED_PORTS, 1);
- next0 = CNAT_TRANSLATION_NEXT_DROP;
- goto trace;
- }
+ if (CNAT_SOURCE_ERROR_EXHAUSTED_PORTS == rv)
+ {
+ vlib_node_registration_t *node =
+ (AF_IP4 == ctx->af) ? &cnat_vip_ip4_node : &cnat_vip_ip6_node;
+ vlib_node_increment_counter (vm, node->index,
+ CNAT_ERROR_EXHAUSTED_PORTS, 1);
}
-
- session->value.cs_port[VLIB_RX] = sport;
+ next0 = CNAT_TRANSLATION_NEXT_DROP;
+ goto trace;
}
- session->value.cs_lbi = dpo0->dpoi_index;
/* refcnt session in current client */
cnat_client_cnt_session (cc);
- cnat_session_create (session, ctx, rsession_flags);
- created_session = 1;
+ cnat_session_create (session, ctx);
+ if (!(ct->flags & CNAT_TR_FLAG_NO_RETURN_SESSION))
+ cnat_rsession_create (session, ctx, CNAT_LOCATION_FIB, rsession_flags);
+ trace_flags |= CNAT_TRACE_SESSION_CREATED;
next0 = ct->ct_lb.dpoi_next_node;
vnet_buffer (b)->ip.adj_index[VLIB_TX] = session->value.cs_lbi;
}
if (AF_IP4 == ctx->af)
- cnat_translation_ip4 (session, ip4, udp0);
+ cnat_translation_ip4 (session, ip4, udp0, vnet_buffer (b)->oflags);
else
- cnat_translation_ip6 (session, ip6, udp0);
+ cnat_translation_ip6 (session, ip6, udp0, vnet_buffer (b)->oflags);
if (NULL != ct)
{
cti = ct - cnat_translation_pool;
vlib_increment_combined_counter (cntm, ctx->thread_index, cti, 1,
- vlib_buffer_length_in_chain (vm, b));
+ vlib_buffer_length_in_chain (vm, b));
}
trace:
if (PREDICT_FALSE (ctx->do_trace))
{
- cnat_translation_trace_t *t;
-
- t = vlib_add_trace (vm, node, b, sizeof (*t));
-
- t->found_session = !rv;
- t->created_session = created_session;
- if (t->found_session || t->created_session)
- clib_memcpy (&t->session, session, sizeof (t->session));
- t->has_tr = (NULL != ct);
- if (t->has_tr)
- clib_memcpy (&t->tr, ct, sizeof (cnat_translation_t));
+ trace_flags |= session_not_found ? 0 : CNAT_TRACE_SESSION_FOUND;
+ cnat_add_trace (vm, node, b, session, ct, trace_flags);
}
return next0;
}
VLIB_NODE_FN (cnat_vip_ip4_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
- return cnat_node_inline (vm, node, frame, cnat_vip_inline, AF_IP4,
- 1 /* do_trace */ );
- return cnat_node_inline (vm, node, frame, cnat_vip_inline, AF_IP4,
- 0 /* do_trace */ );
+ return cnat_node_inline (vm, node, frame, cnat_vip_node_fn, AF_IP4,
+ CNAT_LOCATION_FIB, 1 /* do_trace */);
+ return cnat_node_inline (vm, node, frame, cnat_vip_node_fn, AF_IP4,
+ CNAT_LOCATION_FIB, 0 /* do_trace */);
}
VLIB_NODE_FN (cnat_vip_ip6_node) (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
{
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
- return cnat_node_inline (vm, node, frame, cnat_vip_inline, AF_IP6,
- 1 /* do_trace */ );
- return cnat_node_inline (vm, node, frame, cnat_vip_inline, AF_IP6,
- 0 /* do_trace */ );
+ return cnat_node_inline (vm, node, frame, cnat_vip_node_fn, AF_IP6,
+ CNAT_LOCATION_FIB, 1 /* do_trace */);
+ return cnat_node_inline (vm, node, frame, cnat_vip_node_fn, AF_IP6,
+ CNAT_LOCATION_FIB, 0 /* do_trace */);
}
-/* *INDENT-OFF* */
VLIB_REGISTER_NODE (cnat_vip_ip4_node) =
{
.name = "ip4-cnat-tx",
.vector_size = sizeof (u32),
- .format_trace = format_cnat_translation_trace,
+ .format_trace = format_cnat_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = 0,
.n_next_nodes = CNAT_TRANSLATION_N_NEXT,
{
[CNAT_TRANSLATION_NEXT_DROP] = "ip4-drop",
[CNAT_TRANSLATION_NEXT_LOOKUP] = "ip4-lookup",
- }
+ },
};
VLIB_REGISTER_NODE (cnat_vip_ip6_node) =
{
.name = "ip6-cnat-tx",
.vector_size = sizeof (u32),
- .format_trace = format_cnat_translation_trace,
+ .format_trace = format_cnat_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = 0,
.n_next_nodes = CNAT_TRANSLATION_N_NEXT,
{
[CNAT_TRANSLATION_NEXT_DROP] = "ip6-drop",
[CNAT_TRANSLATION_NEXT_LOOKUP] = "ip6-lookup",
- }
+ },
};
-/* *INDENT-ON* */
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff