#include <vnet/l2/l2_input.h>
#include <vnet/l2/feat_bitmap.h>
#include <vnet/l2/l2_bd.h>
+#include <vnet/l2/l2_learn.h>
#include <vnet/l2/l2_fib.h>
#include <vnet/l2/l2_vtr.h>
#include <vnet/ip/ip4_packet.h>
return 0;
}
+/**
+ Set the mac age for the bridge domain.
+*/
+void
+bd_set_mac_age (vlib_main_t * vm, u32 bd_index, u8 age)
+{
+ l2_bridge_domain_t *bd_config;
+ int enable = 0;
+
+ vec_validate (l2input_main.bd_configs, bd_index);
+ bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
+ bd_config->mac_age = age;
+
+ /* check if there is at least one bd with mac aging enabled */
+ vec_foreach (bd_config, l2input_main.bd_configs)
+ if (bd_config->bd_id != ~0 && bd_config->mac_age != 0)
+ enable = 1;
+
+ vlib_process_signal_event (vm, l2fib_mac_age_scanner_process_node.index,
+ enable ? L2_MAC_AGE_PROCESS_EVENT_START :
+ L2_MAC_AGE_PROCESS_EVENT_STOP, 0);
+}
+
/**
Set bridge-domain learn enable/disable.
The CLI format is:
return error;
}
+static clib_error_t *
+bd_mac_age (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ bd_main_t *bdm = &bd_main;
+ clib_error_t *error = 0;
+ u32 bd_index, bd_id;
+ u32 age;
+ uword *p;
+
+ if (!unformat (input, "%d", &bd_id))
+ {
+ error = clib_error_return (0, "expecting bridge-domain id but got `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
+
+ p = hash_get (bdm->bd_index_by_bd_id, bd_id);
+
+ if (p == 0)
+ return clib_error_return (0, "No such bridge domain %d", bd_id);
+
+ bd_index = p[0];
+
+ if (!unformat (input, "%u", &age))
+ {
+ error =
+ clib_error_return (0, "expecting ageing time in minutes but got `%U'",
+ format_unformat_error, input);
+ goto done;
+ }
+
+ /* set the bridge domain flag */
+ if (age > 255)
+ {
+ error =
+ clib_error_return (0, "mac aging time cannot be bigger than 255");
+ goto done;
+ }
+ bd_set_mac_age (vm, bd_index, (u8) age);
+
+done:
+ return error;
+}
+
+/*?
+ * Layer 2 mac aging can be enabled and disabled on each
+ * bridge-domain. Use this command to set or disable mac aging
+ * on specific bridge-domains. It is disabled by default.
+ *
+ * @cliexpar
+ * Example of how to set mac aging (where 200 is the bridge-domain-id and
+ * 5 is aging time in minutes):
+ * @cliexcmd{set bridge-domain mac-age 200 5}
+ * Example of how to disable mac aging (where 200 is the bridge-domain-id):
+ * @cliexcmd{set bridge-domain flood 200 0}
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (bd_mac_age_cli, static) = {
+ .path = "set bridge-domain mac-age",
+ .short_help = "set bridge-domain mac-age <bridge-domain-id> <mins>",
+ .function = bd_mac_age,
+};
+/* *INDENT-ON* */
+
/*?
* Modify whether or not an existing bridge-domain should terminate and respond
* to ARP Requests. ARP Termination is disabled by default.
uword *mac_by_ip4;
uword *mac_by_ip6;
+ /* mac aging */
+ u8 mac_age;
+
} l2_bridge_domain_t;
/* Return 1 if bridge domain has been initialized */
#define L2_ARP_TERM (1<<4)
u32 bd_set_flags (vlib_main_t * vm, u32 bd_index, u32 flags, u32 enable);
+void bd_set_mac_age (vlib_main_t * vm, u32 bd_index, u8 age);
/**
* \brief Get or create a bridge domain.
#include <vppinfra/error.h>
#include <vppinfra/hash.h>
+#include <vnet/l2/l2_input.h>
#include <vnet/l2/l2_fib.h>
#include <vnet/l2/l2_learn.h>
#include <vnet/l2/l2_bd.h>
{
bd_main_t *bdm = &bd_main;
l2fib_main_t *msm = &l2fib_main;
+ l2_bridge_domain_t *bd_config;
BVT (clib_bihash) * h = &msm->mac_table;
clib_bihash_bucket_t *b;
BVT (clib_bihash_value) * v;
u8 verbose = 0;
u8 raw = 0;
u32 bd_id, bd_index = ~0;
+ u8 now = (u8) (vlib_time_now (vm) / 60);
+ u8 *s = 0;
if (unformat (input, "raw"))
raw = 1;
{
first_entry = 0;
vlib_cli_output (vm,
- "%=19s%=7s%=30s%=7s%=8s%=8s%=5s%=9s%=11s",
+ "%=19s%=7s%=30s%=7s%=8s%=8s%=5s%=16s",
"Mac Address", "BD Idx", "Interface",
"Index", "static", "filter", "bvi",
- "refresh", "timestamp");
+ "Mac Age (min)");
}
key.raw = v->kvp[k].key;
if (verbose
& ((bd_index >> 31) || (bd_index == key.fields.bd_index)))
{
+ bd_config = vec_elt_at_index (l2input_main.bd_configs,
+ key.fields.bd_index);
+
+ if (bd_config->mac_age)
+ {
+ i16 delta = now - result.fields.timestamp;
+ delta += delta < 0 ? 256 : 0;
+ s = format (s, "%d", delta);
+ }
+ else
+ s = format (s, "disabled");
+
vlib_cli_output (vm,
- "%=19U%=7d%=30U%=7d%=8d%=8d%=5d%=9d%=11X",
+ "%=19U%=7d%=30U%=7d%=8d%=8d%=5d%=16v",
format_ethernet_address, key.fields.mac,
key.fields.bd_index,
format_vnet_sw_if_index_name_with_NA,
? -1 : result.fields.sw_if_index,
result.fields.static_mac,
result.fields.filter,
- result.fields.bvi,
- result.fields.refresh,
- result.fields.timestamp);
+ result.fields.bvi, s);
+ vec_reset_length (s);
}
total_entries++;
}
vlib_cli_output (vm, "Raw Hash Table:\n%U\n",
BV (format_bihash), h, 1 /* verbose */ );
+ vec_free (s);
return 0;
}
return &mp->mac_table;
}
+static uword
+l2fib_mac_age_scanner_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f)
+{
+ uword event_type, *event_data = 0;
+ l2fib_main_t *msm = &l2fib_main;
+ l2_bridge_domain_t *bd_config;
+ BVT (clib_bihash) * h = &msm->mac_table;
+ clib_bihash_bucket_t *b;
+ BVT (clib_bihash_value) * v;
+ l2fib_entry_key_t key;
+ l2fib_entry_result_t result;
+ int i, j, k;
+ bool enabled = 0;
+ f64 start_time, last_run_duration = 0, t;
+ i16 delta;
+
+ while (1)
+ {
+ if (enabled)
+ vlib_process_wait_for_event_or_clock (vm, 60 - last_run_duration);
+ else
+ vlib_process_wait_for_event (vm);
+
+ event_type = vlib_process_get_events (vm, &event_data);
+ vec_reset_length (event_data);
+
+ switch (event_type)
+ {
+ case ~0:
+ break;
+ case L2_MAC_AGE_PROCESS_EVENT_START:
+ enabled = 1;
+ break;
+ case L2_MAC_AGE_PROCESS_EVENT_STOP:
+ enabled = 0;
+ continue;
+ default:
+ ASSERT (0);
+ }
+ last_run_duration = start_time = vlib_time_now (vm);
+ for (i = 0; i < h->nbuckets; i++)
+ {
+ /* Allow no more than 10us without a pause */
+ t = vlib_time_now (vm);
+ if (t > start_time + 10e-6)
+ {
+ vlib_process_suspend (vm, 100e-6); /* suspend for 100 us */
+ start_time = vlib_time_now (vm);
+ }
+
+ if (i < (h->nbuckets - 3))
+ {
+ b = &h->buckets[i + 3];
+ CLIB_PREFETCH (b, CLIB_CACHE_LINE_BYTES, LOAD);
+ b = &h->buckets[i + 1];
+ if (b->offset)
+ {
+ v = BV (clib_bihash_get_value) (h, b->offset);
+ CLIB_PREFETCH (v, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
+ }
+
+ b = &h->buckets[i];
+ if (b->offset == 0)
+ continue;
+ v = BV (clib_bihash_get_value) (h, b->offset);
+ for (j = 0; j < (1 << b->log2_pages); j++)
+ {
+ for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
+ {
+ if (v->kvp[k].key == ~0ULL && v->kvp[k].value == ~0ULL)
+ continue;
+
+ key.raw = v->kvp[k].key;
+ result.raw = v->kvp[k].value;
+
+ if (result.fields.static_mac)
+ continue;
+
+ bd_config = vec_elt_at_index (l2input_main.bd_configs,
+ key.fields.bd_index);
+
+ if (bd_config->mac_age == 0)
+ continue;
+
+ delta = (u8) (start_time / 60) - result.fields.timestamp;
+ delta += delta < 0 ? 256 : 0;
+
+ if (delta > bd_config->mac_age)
+ {
+ void *p = &key.fields.mac;
+ l2fib_del_entry (*(u64 *) p, key.fields.bd_index);
+ }
+ }
+ v++;
+ }
+ }
+ last_run_duration = vlib_time_now (vm) - last_run_duration;
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (l2fib_mac_age_scanner_process_node) = {
+ .function = l2fib_mac_age_scanner_process,
+ .type = VLIB_NODE_TYPE_PROCESS,
+ .name = "l2fib-mac-age-scanner-process",
+};
+/* *INDENT-ON* */
+
clib_error_t *
l2fib_init (vlib_main_t * vm)
{
};
} l2fib_entry_key_t;
+STATIC_ASSERT_SIZEOF (l2fib_entry_key_t, 8);
+
/*
* The l2fib entry results
*/
u8 static_mac:1; /* static mac, no dataplane learning */
u8 bvi:1; /* mac is for a bridged virtual interface */
u8 filter:1; /* drop packets to/from this mac */
- u8 refresh:1; /* refresh flag for aging */
- u8 unused1:4;
+ u8 unused1:5;
u8 timestamp; /* timestamp for aging */
u16 unused2;
} fields;
};
} l2fib_entry_result_t;
+STATIC_ASSERT_SIZEOF (l2fib_entry_result_t, 8);
/**
* Compute the hash for the given key and return
u32 sw_if_index0,
l2fib_entry_key_t * key0,
l2fib_entry_key_t * cached_key,
- u32 * bucket0, l2fib_entry_result_t * result0, u32 * next0)
+ u32 * bucket0,
+ l2fib_entry_result_t * result0, u32 * next0, u8 timestamp)
{
u32 feature_bitmap;
{
/*
* The entry was in the table, and the sw_if_index matched, the normal case
- *
- * TODO: for dataplane learning and aging, do this:
- * if refresh=0 and not a static mac, set refresh=1
*/
counter_base[L2LEARN_ERROR_HIT] += 1;
+ if (PREDICT_FALSE (result0->fields.timestamp != timestamp))
+ result0->fields.timestamp = timestamp;
}
else if (result0->raw == ~0)
result0->raw = 0; /* clear all fields */
result0->fields.sw_if_index = sw_if_index0;
- /* TODO: set timestamp in entry to clock for dataplane aging */
+ result0->fields.timestamp = timestamp;
kv.key = key0->raw;
kv.value = result0->raw;
result0->raw = 0; /* clear all fields */
result0->fields.sw_if_index = sw_if_index0;
+ result0->fields.timestamp = timestamp;
kv.key = key0->raw;
kv.value = result0->raw;
vlib_error_main_t *em = &vm->error_main;
l2fib_entry_key_t cached_key;
l2fib_entry_result_t cached_result;
+ u8 timestamp = (u8) (vlib_time_now (vm) / 60);
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors; /* number of packets to process */
l2learn_process (node, msm, &em->counters[node_counter_base_index],
b0, sw_if_index0, &key0, &cached_key,
- &bucket0, &result0, &next0);
+ &bucket0, &result0, &next0, timestamp);
l2learn_process (node, msm, &em->counters[node_counter_base_index],
b1, sw_if_index1, &key1, &cached_key,
- &bucket1, &result1, &next1);
+ &bucket1, &result1, &next1, timestamp);
l2learn_process (node, msm, &em->counters[node_counter_base_index],
b2, sw_if_index2, &key2, &cached_key,
- &bucket2, &result2, &next2);
+ &bucket2, &result2, &next2, timestamp);
l2learn_process (node, msm, &em->counters[node_counter_base_index],
b3, sw_if_index3, &key3, &cached_key,
- &bucket3, &result3, &next3);
+ &bucket3, &result3, &next3, timestamp);
/* verify speculative enqueues, maybe switch current next frame */
/* if next0==next1==next_index then nothing special needs to be done */
l2learn_process (node, msm, &em->counters[node_counter_base_index],
b0, sw_if_index0, &key0, &cached_key,
- &bucket0, &result0, &next0);
+ &bucket0, &result0, &next0, timestamp);
/* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
l2learn_main_t l2learn_main;
+extern vlib_node_registration_t l2fib_mac_age_scanner_process_node;
+
+enum
+{
+ L2_MAC_AGE_PROCESS_EVENT_START = 1,
+ L2_MAC_AGE_PROCESS_EVENT_STOP = 2,
+} l2_mac_age_process_event_t;
+
#endif
/*
u32 bd_id = ~0;
u8 is_add = 1;
u32 flood = 1, forward = 1, learn = 1, uu_flood = 1, arp_term = 0;
+ u32 mac_age = 0;
/* Parse args required to build the message */
while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
;
else if (unformat (i, "arp-term %d", &arp_term))
;
+ else if (unformat (i, "mac-age %d", &mac_age))
+ ;
else if (unformat (i, "del"))
{
is_add = 0;
return -99;
}
+ if (mac_age > 255)
+ {
+ errmsg ("mac age must be less than 256 \n");
+ return -99;
+ }
+
M (BRIDGE_DOMAIN_ADD_DEL, bridge_domain_add_del);
mp->bd_id = ntohl (bd_id);
mp->learn = learn;
mp->arp_term = arp_term;
mp->is_add = is_add;
+ mp->mac_age = (u8) mac_age;
S;
W;
if (disable_flags)
bd_set_flags (vm, bd_index, disable_flags, 0 /* disable */ );
+ bd_set_mac_age (vm, mp->mac_age, mp->mac_age);
}
else
rv = bd_delete_bd_index (bdm, bd_id);
mp->learn = bd_feature_learn (bd_config);
mp->arp_term = bd_feature_arp_term (bd_config);
mp->bvi_sw_if_index = ntohl (bd_config->bvi_sw_if_index);
+ mp->mac_age = bd_config->mac_age;
mp->n_sw_ifs = ntohl (n_sw_ifs);
mp->context = context;
@param forward - enable/disable forwarding on all interfaces in the bd
@param learn - enable/disable learning on all interfaces in the bd
@param arp_term - enable/disable arp termination in the bd
+ @param mac_age - mac aging time in min, 0 for disabled
@param is_add - add or delete flag
*/
define bridge_domain_add_del
u8 forward;
u8 learn;
u8 arp_term;
+ u8 mac_age;
u8 is_add;
};
@param forward - forwarding state on all interfaces in the bd
@param learn - learning state on all interfaces in the bd
@param arp_term - arp termination state on all interfaces in the bd
+ @param mac_age - mac aging time in min, 0 for disabled
@param n_sw_ifs - number of sw_if_index's in the domain
*/
define bridge_domain_details
u8 forward;
u8 learn;
u8 arp_term;
+ u8 mac_age;
u32 bvi_sw_if_index;
u32 n_sw_ifs;
};
#define STATIC_ASSERT(truth,...) _Static_assert(truth, __VA_ARGS__)
#endif
+#define STATIC_ASSERT_SIZEOF(d, s) \
+ STATIC_ASSERT (sizeof (d) == s, "Size of " #d " must be " # s " bytes")
+
/* Assert without allocating memory. */
#define ASSERT_AND_PANIC(truth) \
do { \
Code Review / vpp.git / commitdiff