@@ -9,6 +9,8 @@ Post-v2.15.0
- Userspace datapath:
* Auto load balancing of PMDs now partially supports cross-NUMA polling
cases, e.g if all PMD threads are running on the same NUMA node.
+ * Added ability to add and delete static mac entries using:
+ 'ovs-appctl fdb/{add,del} <bridge> <port> <vlan> <mac>'
- ovs-ctl:
* New option '--no-record-hostname' to disable hostname configuration
in ovsdb on startup.
@@ -35,12 +35,23 @@ COVERAGE_DEFINE(mac_learning_expired);
COVERAGE_DEFINE(mac_learning_evicted);
COVERAGE_DEFINE(mac_learning_moved);
-/* Returns the number of seconds since 'e' (within 'ml') was last learned. */
+/*
+ * This function will return age of mac entry in the fdb. It
+ * will return either one of the following:
+ * 1. Number of seconds since 'e' (within 'ml') was last learned.
+ * 2. If the mac entry is a static entry, it returns
+ * MAC_ENTRY_AGE_STATIC_ENTRY
+ */
int
mac_entry_age(const struct mac_learning *ml, const struct mac_entry *e)
{
- time_t remaining = e->expires - time_now();
- return ml->idle_time - remaining;
+ /* For static fdb entries, expires would be MAC_ENTRY_AGE_STATIC_ENTRY */
+ if (MAC_ENTRY_AGE_STATIC_ENTRY == e->expires) {
+ return MAC_ENTRY_AGE_STATIC_ENTRY;
+ } else {
+ time_t remaining = e->expires - time_now();
+ return ml->idle_time - remaining;
+ }
}
static uint32_t
@@ -187,6 +198,7 @@ mac_learning_clear_statistics(struct mac_learning *ml)
{
if (ml != NULL) {
ml->total_learned = 0;
+ ml->total_static = 0;
ml->total_expired = 0;
ml->total_evicted = 0;
ml->total_moved = 0;
@@ -309,16 +321,19 @@ mac_learning_may_learn(const struct mac_learning *ml,
}
/* Searches 'ml' for and returns a MAC learning entry for 'src_mac' in 'vlan',
- * inserting a new entry if necessary. The caller must have already verified,
- * by calling mac_learning_may_learn(), that 'src_mac' and 'vlan' are
- * learnable.
+ * inserting a new entry if necessary. If entry being added is a
+ * 1. cache entry: caller must have already verified, by calling
+ * mac_learning_may_learn(), that 'src_mac' and 'vlan' are learnable.
+ * 2. static entry: new mac static fdb entry will be created or if one
+ * exists already, converts that entry to a static fdb type.
*
* If the returned MAC entry is new (that is, if it has a NULL client-provided
* port, as returned by mac_entry_get_port()), then the caller must initialize
* the new entry's port to a nonnull value with mac_entry_set_port(). */
-struct mac_entry *
-mac_learning_insert(struct mac_learning *ml,
- const struct eth_addr src_mac, uint16_t vlan)
+static struct mac_entry *
+mac_learning_insert__(struct mac_learning *ml, const struct eth_addr src_mac,
+ uint16_t vlan, bool is_static)
+ OVS_REQ_WRLOCK(ml->rwlock)
{
struct mac_entry *e;
@@ -336,8 +351,11 @@ mac_learning_insert(struct mac_learning *ml,
e->vlan = vlan;
e->grat_arp_lock = TIME_MIN;
e->mlport = NULL;
- COVERAGE_INC(mac_learning_learned);
- ml->total_learned++;
+ e->expires = 0;
+ if (!is_static) {
+ COVERAGE_INC(mac_learning_learned);
+ ml->total_learned++;
+ }
} else {
ovs_list_remove(&e->lru_node);
}
@@ -348,11 +366,80 @@ mac_learning_insert(struct mac_learning *ml,
ovs_list_remove(&e->port_lru_node);
ovs_list_push_back(&e->mlport->port_lrus, &e->port_lru_node);
}
- e->expires = time_now() + ml->idle_time;
+
+ /* Update 'expires' for mac entry */
+ if (is_static) {
+ /* Increment total_static only if entry is a new one or entry is
+ * is converted from cache to static type */
+ if (e->expires != MAC_ENTRY_AGE_STATIC_ENTRY) {
+ ml->total_static++;
+ }
+ e->expires = MAC_ENTRY_AGE_STATIC_ENTRY;
+ } else {
+ e->expires = time_now() + ml->idle_time;
+ }
return e;
}
+/* Adds a new dynamic mac entry to fdb */
+struct mac_entry *
+mac_learning_insert(struct mac_learning *ml,
+ const struct eth_addr src_mac, uint16_t vlan)
+{
+ return mac_learning_insert__(ml, src_mac, vlan, false);
+}
+
+/* Adds a new static mac entry to fdb. It returns pointer to mac_entry
+ * pointing to the fdb entry
+ *
+ * Returns 'true' if mac entry is inserted, 'false' otherwise
+ */
+bool
+mac_learning_add_static_entry(struct mac_learning *ml,
+ const struct eth_addr src_mac, uint16_t vlan,
+ void *in_port)
+ OVS_EXCLUDED(ml->rwlock)
+{
+ struct mac_entry *mac = NULL;
+ bool inserted = false;
+
+ ovs_rwlock_wrlock(&ml->rwlock);
+ mac = mac_learning_insert__(ml, src_mac, vlan, true);
+ if (mac) {
+ if (mac_entry_get_port(ml, mac) != in_port) {
+ mac_entry_set_port(ml, mac, in_port);
+ }
+ inserted = true;
+ }
+ ovs_rwlock_unlock(&ml->rwlock);
+
+ return inserted;
+}
+
+/* Delete a static mac entry from fdb if it exists.
+ *
+ * Returns 'true' if mac entry is found, 'false' otherwise
+ */
+bool
+mac_learning_del_static_entry(struct mac_learning *ml,
+ const struct eth_addr dl_src, uint16_t vlan)
+{
+ struct mac_entry *mac = NULL;
+ bool deleted = false;
+
+ ovs_rwlock_wrlock(&ml->rwlock);
+ mac = mac_learning_lookup(ml, dl_src, vlan);
+ if (mac) {
+ mac_learning_expire(ml, mac);
+ ml->total_static--;
+ deleted = true;
+ }
+ ovs_rwlock_unlock(&ml->rwlock);
+
+ return deleted;
+}
+
/* Checks whether a MAC learning update is necessary for MAC learning table
* 'ml' given that a packet matching 'src' was received on 'in_port' in 'vlan',
* and given that the packet was gratuitous ARP if 'is_gratuitous_arp' is
@@ -372,13 +459,27 @@ is_mac_learning_update_needed(const struct mac_learning *ml,
OVS_REQ_RDLOCK(ml->rwlock)
{
struct mac_entry *mac;
+ int age;
if (!mac_learning_may_learn(ml, src, vlan)) {
return false;
}
mac = mac_learning_lookup(ml, src, vlan);
- if (!mac || mac_entry_age(ml, mac)) {
+ /* If mac entry is missing it needs to be added to fdb */
+ if (!mac) {
+ return true;
+ }
+
+ age = mac_entry_age(ml, mac);
+ /* if mac is a static entry, then there is no need to update */
+ if (age == MAC_ENTRY_AGE_STATIC_ENTRY) {
+ return false;
+ }
+
+ /* If entry is still alive, just update the mac_entry so, that expires
+ * gets updated */
+ if (age > 0) {
return true;
}
@@ -513,13 +614,29 @@ mac_learning_expire(struct mac_learning *ml, struct mac_entry *e)
free(e);
}
-/* Expires all the mac-learning entries in 'ml'. */
+/* Expires all the dynamic mac-learning entries in 'ml'. */
void
mac_learning_flush(struct mac_learning *ml)
{
- struct mac_entry *e;
- while (get_lru(ml, &e)){
- mac_learning_expire(ml, e);
+ struct mac_entry *e, *first_static_mac = NULL;
+
+ while (get_lru(ml, &e) && (e != first_static_mac)) {
+
+ /* static-mac should not be evicted */
+ if (MAC_ENTRY_AGE_STATIC_ENTRY == e->expires) {
+
+ /* Make note of first static-mac encountered, so that this while
+ * loop will break on visting this mac again via get_lru() */
+ if (!first_static_mac) {
+ first_static_mac = e;
+ }
+
+ /* Remove from lru head and append it to tail */
+ ovs_list_remove(&e->lru_node);
+ ovs_list_push_back(&ml->lrus, &e->lru_node);
+ } else {
+ mac_learning_expire(ml, e);
+ }
}
hmap_shrink(&ml->table);
}
@@ -57,6 +57,11 @@
* list starting from the LRU end, deleting each entry that has been idle too
* long.
*
+ * Fourth, a mac entry can be configured statically via API or appctl commands.
+ * Static entries are programmed to have an age of MAC_ENTRY_AGE_STATIC_ENTRY.
+ * Age of static entries will not be updated by a receiving packet as part of
+ * regular packet processing.
+ *
* Finally, the number of MAC learning table entries has a configurable maximum
* size to prevent memory exhaustion. When a new entry must be inserted but
* the table is already full, the implementation uses an eviction strategy
@@ -94,6 +99,9 @@ struct mac_learning;
/* Time, in seconds, before expiring a mac_entry due to inactivity. */
#define MAC_ENTRY_DEFAULT_IDLE_TIME 300
+/* Age value to represent a static entry */
+#define MAC_ENTRY_AGE_STATIC_ENTRY INT_MAX
+
/* Time, in seconds, to lock an entry updated by a gratuitous ARP to avoid
* relearning based on a reflection from a bond member. */
#define MAC_GRAT_ARP_LOCK_TIME 5
@@ -162,6 +170,7 @@ struct mac_learning {
/* Statistics */
uint64_t total_learned;
+ uint64_t total_static;
uint64_t total_expired;
uint64_t total_evicted;
uint64_t total_moved;
@@ -218,6 +227,14 @@ bool mac_learning_update(struct mac_learning *ml, struct eth_addr src,
int vlan, bool is_gratuitous_arp, bool is_bond,
void *in_port)
OVS_EXCLUDED(ml->rwlock);
+bool mac_learning_add_static_entry(struct mac_learning *ml,
+ const struct eth_addr src,
+ uint16_t vlan, void *in_port)
+ OVS_EXCLUDED(ml->rwlock);
+bool mac_learning_del_static_entry(struct mac_learning *ml,
+ const struct eth_addr src,
+ uint16_t vlan)
+ OVS_EXCLUDED(ml->rwlock);
/* Lookup. */
struct mac_entry *mac_learning_lookup(const struct mac_learning *ml,
@@ -7989,26 +7989,58 @@ xlate_send_packet(const struct ofport_dpif *ofport, bool oam,
ofpacts.data, ofpacts.size, packet);
}
-void
-xlate_mac_learning_update(const struct ofproto_dpif *ofproto,
- ofp_port_t in_port, struct eth_addr dl_src,
- int vlan, bool is_grat_arp)
+/* Get xbundle for a ofp_port in a ofproto datapath */
+static struct xbundle*
+ofp_port_to_xbundle(const struct ofproto_dpif *ofproto, ofp_port_t ofp_port)
{
struct xlate_cfg *xcfg = ovsrcu_get(struct xlate_cfg *, &xcfgp);
struct xbridge *xbridge;
- struct xbundle *xbundle;
xbridge = xbridge_lookup(xcfg, ofproto);
if (!xbridge) {
- return;
+ return NULL;
}
- xbundle = lookup_input_bundle__(xbridge, in_port, NULL);
+ return lookup_input_bundle__(xbridge, ofp_port, NULL);
+}
+
+void
+xlate_mac_learning_update(const struct ofproto_dpif *ofproto,
+ ofp_port_t in_port, struct eth_addr dl_src,
+ int vlan, bool is_grat_arp)
+{
+ struct xbundle *xbundle = NULL;
+
+ xbundle = ofp_port_to_xbundle(ofproto, in_port);
if (!xbundle) {
return;
}
- update_learning_table__(xbridge, xbundle, dl_src, vlan, is_grat_arp);
+ update_learning_table__(xbundle->xbridge,
+ xbundle, dl_src, vlan, is_grat_arp);
+}
+
+bool
+xlate_add_static_mac_entry(const struct ofproto_dpif *ofproto,
+ ofp_port_t in_port,
+ struct eth_addr dl_src, int vlan)
+{
+ struct xbundle *xbundle = ofp_port_to_xbundle(ofproto, in_port);
+
+ /* Return here if xbundle */
+ if (!xbundle || (xbundle == &ofpp_none_bundle)) {
+ return false;
+ }
+
+ return mac_learning_add_static_entry(ofproto->ml, dl_src, vlan,
+ xbundle->ofbundle);
+}
+
+bool
+xlate_delete_static_mac_entry(const struct ofproto_dpif *ofproto,
+ struct eth_addr dl_src, int vlan)
+{
+ return mac_learning_del_static_entry(ofproto->ml, dl_src, vlan);
}
void
@@ -225,6 +225,11 @@ int xlate_send_packet(const struct ofport_dpif *, bool oam, struct dp_packet *);
void xlate_mac_learning_update(const struct ofproto_dpif *ofproto,
ofp_port_t in_port, struct eth_addr dl_src,
int vlan, bool is_grat_arp);
+bool xlate_add_static_mac_entry(const struct ofproto_dpif *,
+ ofp_port_t in_port,
+ struct eth_addr dl_src, int vlan);
+bool xlate_delete_static_mac_entry(const struct ofproto_dpif *,
+ struct eth_addr dl_src, int vlan);
void xlate_set_support(const struct ofproto_dpif *,
const struct dpif_backer_support *);
@@ -5854,18 +5854,98 @@ ofproto_unixctl_fdb_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
LIST_FOR_EACH (e, lru_node, &ofproto->ml->lrus) {
struct ofbundle *bundle = mac_entry_get_port(ofproto->ml, e);
char name[OFP_MAX_PORT_NAME_LEN];
+ int age = mac_entry_age(ofproto->ml, e);
ofputil_port_to_string(ofbundle_get_a_port(bundle)->up.ofp_port,
- NULL, name, sizeof name);
- ds_put_format(&ds, "%5s %4d "ETH_ADDR_FMT" %3d\n",
- name, e->vlan, ETH_ADDR_ARGS(e->mac),
- mac_entry_age(ofproto->ml, e));
+ NULL, name, sizeof name);
+ ds_put_format(&ds, "%5s %4d "ETH_ADDR_FMT" ",
+ name, e->vlan, ETH_ADDR_ARGS(e->mac));
+ if (MAC_ENTRY_AGE_STATIC_ENTRY == age) {
+ ds_put_format(&ds, "static\n");
+ } else {
+ ds_put_format(&ds, "%3d\n", age);
+ }
}
ovs_rwlock_unlock(&ofproto->ml->rwlock);
unixctl_command_reply(conn, ds_cstr(&ds));
ds_destroy(&ds);
}
+static void
+ofproto_unixctl_fdb_update(struct unixctl_conn *conn, int argc OVS_UNUSED,
+ const char *argv[], void *aux OVS_UNUSED)
+{
+ const char *br_name = argv[1];
+ const char *port_name = argv[2];
+ struct eth_addr mac;
+ uint16_t vlan = atoi(argv[3]);
+ const char *op = (const char *) aux;
+ const struct ofproto_dpif *ofproto;
+ ofp_port_t in_port = OFPP_NONE;
+ struct ofproto_port ofproto_port;
+ struct ds ds = DS_EMPTY_INITIALIZER;
+
+ ofproto = ofproto_dpif_lookup_by_name(br_name);
+ if (!ofproto) {
+ unixctl_command_reply_error(conn, "no such bridge");
+ return;
+ }
+
+ if (!eth_addr_from_string(argv[4], &mac)) {
+ unixctl_command_reply_error(conn, "bad MAC address");
+ return;
+ }
+
+ if (ofproto_port_query_by_name(&ofproto->up, port_name, &ofproto_port)) {
+ unixctl_command_reply_error(conn,
+ "software error, odp port is present but no ofp port");
+ return;
+ }
+ in_port = ofproto_port.ofp_port;
+ ofproto_port_destroy(&ofproto_port);
+
+ if (!strcmp(op, "add")) {
+ /* Give a bit more information if the entry being added is overriding
+ * an existing entry */
+ const struct mac_entry *mac_entry;
+ const struct ofbundle *bundle = NULL;
+ int age;
+
+ ovs_rwlock_rdlock(&ofproto->ml->rwlock);
+ mac_entry = mac_learning_lookup(ofproto->ml, mac, vlan);
+ if (mac_entry) {
+ bundle = mac_entry ?
+ mac_entry_get_port(ofproto->ml, mac_entry) : NULL;
+ age = mac_entry->expires;
+ }
+ ovs_rwlock_unlock(&ofproto->ml->rwlock);
+
+ if (bundle && ((strcmp(bundle->name, port_name)) ||
+ (age != MAC_ENTRY_AGE_STATIC_ENTRY))) {
+ char old_port_name[OFP_MAX_PORT_NAME_LEN];
+
+ ofputil_port_to_string(ofbundle_get_a_port(bundle)->up.ofp_port,
+ NULL, old_port_name, sizeof old_port_name);
+ ds_put_format(&ds, "Overriding already existing %s entry on %s\n",
+ (age == MAC_ENTRY_AGE_STATIC_ENTRY) ? "static" : "dynamic",
+ old_port_name);
+ }
+
+ if (!xlate_add_static_mac_entry(ofproto, in_port, mac, vlan)) {
+ ds_put_format(&ds, "could not add static mac entry\n");
+ }
+ unixctl_command_reply(conn, ds_cstr(&ds));
+ } else if (!strcmp(op, "del")) {
+ if (!xlate_delete_static_mac_entry(ofproto, mac, vlan)) {
+ ds_put_format(&ds, "could not find static mac entry\n");
+ }
+ unixctl_command_reply(conn, ds_cstr(&ds));
+ } else {
+ unixctl_command_reply_error(conn, "software error, unknown operation");
+ }
+ ds_destroy(&ds);
+}
+
static void
ofproto_unixctl_fdb_stats_clear(struct unixctl_conn *conn, int argc,
const char *argv[], void *aux OVS_UNUSED)
@@ -5914,6 +5994,9 @@ ofproto_unixctl_fdb_stats_show(struct unixctl_conn *conn, int argc OVS_UNUSED,
ds_put_format(&ds,
" Total number of learned MAC entries : %"PRIu64"\n",
ofproto->ml->total_learned);
+ ds_put_format(&ds,
+ " Total number of static MAC entries : %"PRIu64"\n",
+ ofproto->ml->total_static);
ds_put_format(&ds,
" Total number of expired MAC entries : %"PRIu64"\n",
ofproto->ml->total_expired);
@@ -6417,6 +6500,10 @@ ofproto_unixctl_init(void)
}
registered = true;
+ unixctl_command_register("fdb/add", "[bridge port vlan mac]", 4, 4,
+ ofproto_unixctl_fdb_update, "add");
+ unixctl_command_register("fdb/del", "[bridge port vlan mac]", 4, 4,
+ ofproto_unixctl_fdb_update, "del");
unixctl_command_register("fdb/flush", "[bridge]", 0, 1,
ofproto_unixctl_fdb_flush, NULL);
unixctl_command_register("fdb/show", "bridge", 1, 1,
@@ -6753,6 +6753,99 @@ PORTNAME
portName=p2
])])
+AT_SETUP([ofproto-dpif - static-mac add/del/flush])
+OVS_VSWITCHD_START([set bridge br0 fail-mode=standalone])
+add_of_ports br0 1 2
+
+dnl Generate some dynamic fdb entries on some ports
+OFPROTO_TRACE([ovs-dummy], [in_port(1),eth(src=50:54:00:00:00:01)], [-generate], [100,2])
+OFPROTO_TRACE([ovs-dummy], [in_port(2),eth(src=50:54:00:00:00:02)], [-generate], [100,1])
+
+dnl Add some static mac entries
+AT_CHECK([ovs-appctl fdb/add br0 p1 0 50:54:00:00:01:01])
+AT_CHECK([ovs-appctl fdb/add br0 p2 0 50:54:00:00:02:02])
+
+dnl Check initial fdb
+AT_CHECK_UNQUOTED([ovs-appctl fdb/show br0 | sed 's/ *[[0-9]]\{1,\}$//' | grep -v port | sort], [0], [dnl
+ 1 0 50:54:00:00:00:01
+ 1 0 50:54:00:00:01:01 static
+ 2 0 50:54:00:00:00:02
+ 2 0 50:54:00:00:02:02 static
+])
+
+dnl Remove static mac entry
+AT_CHECK([ovs-appctl fdb/del br0 p1 0 50:54:00:00:01:01])
+
+dnl Check that entry is removed
+AT_CHECK_UNQUOTED([ovs-appctl fdb/show br0 | grep "50:54:00:00:01:01"], [1], [dnl
+])
+
+# Add some more cache and static entries, to test out flush operation
+for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f; do
+ ovs-appctl ofproto/trace ovs-dummy "in_port(1),eth(src=50:54:00:00:0$i:ff)" -generate
+done
+
+for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f; do
+ ovs-appctl fdb/add br0 p2 0 50:54:00:0$i:00:ff
+done
+
+dnl Flush mac entries, only dynamic ones should be evicted.
+AT_CHECK([ovs-appctl fdb/flush br0], [0], [dnl
+table successfully flushed
+])
+
+dnl Count number of static entries remaining
+AT_CHECK_UNQUOTED([ovs-appctl fdb/stats-show br0 | grep static], [0], [dnl
+ Total number of static MAC entries : 17
+])
+
+OVS_VSWITCHD_STOP
+AT_CLEANUP
+
+AT_SETUP([ofproto-dpif - static-mac mac moves])
+OVS_VSWITCHD_START([set bridge br0 fail-mode=standalone])
+add_of_ports br0 1 2
+
+dnl Generate a dynamic entry
+OFPROTO_TRACE([ovs-dummy], [in_port(1),eth(src=50:54:00:00:00:00)], [-generate], [100,2])
+
+dnl Convert dynamically learnt dl_src to a static-mac
+AT_CHECK([ovs-appctl fdb/add br0 p1 0 50:54:00:00:00:00], [0], [dnl
+Overriding already existing dynamic entry on 1
+])
+
+dnl Check fdb
+AT_CHECK_UNQUOTED([ovs-appctl fdb/show br0 | sed 's/ *[[0-9]]\{1,\}$//' | grep -v port | sort], [0], [dnl
+ 1 0 50:54:00:00:00:00 static
+])
+
+dnl Move the static mac to different port
+AT_CHECK([ovs-appctl fdb/add br0 p2 0 50:54:00:00:00:00], [0], [dnl
+Overriding already existing static entry on 1
+])
+
+dnl Check fdb
+AT_CHECK_UNQUOTED([ovs-appctl fdb/show br0 | sed 's/ *[[0-9]]\{1,\}$//' | grep -v port | sort], [0], [dnl
+ 2 0 50:54:00:00:00:00 static
+])
+
+dnl static-mac should not be converted to a dynamic one when a packet with same dl_src
+dnl arrives on any port of the switch
+dnl Packet arriving on p1
+OFPROTO_TRACE([ovs-dummy], [in_port(1),eth(src=50:54:00:00:00:00)], [-generate], [100,2])
+AT_CHECK_UNQUOTED([ovs-appctl fdb/show br0 | sed 's/ *[[0-9]]\{1,\}$//' | grep -v port | sort], [0], [dnl
+ 2 0 50:54:00:00:00:00 static
+])
+
+dnl Packet arriving on p2
+OFPROTO_TRACE([ovs-dummy], [in_port(2),eth(src=50:54:00:00:00:00)], [-generate], [100,1])
+AT_CHECK_UNQUOTED([ovs-appctl fdb/show br0 | sed 's/ *[[0-9]]\{1,\}$//' | grep -v port | sort], [0], [dnl
+ 2 0 50:54:00:00:00:00 static
+])
+
+OVS_VSWITCHD_STOP
+AT_CLEANUP
+
AT_SETUP([ofproto-dpif - basic truncate action])
OVS_VSWITCHD_START
add_of_ports br0 1 2 3 4 5
@@ -159,6 +159,11 @@ If \fIbridge\fR is not specified, then displays detailed information about all
bridges with RSTP enabled.
.SS "BRIDGE COMMANDS"
These commands manage bridges.
+.IP "\fBfdb/add\fR \fIbridge\fR \fIport\fR \fIvlan\fR \fImac\fR"
+.IQ "\fBfdb/del\fR \fIbridge\fR \fIport\fR \fIvlan\fR \fImac\fR"
+Adds/deletes \fImac\fR address on a \fIbridge\fR to/from \fIport\fR and
+\fIvlan\fR. This utility is can be used to pre-populate fdb table without
+relying on dynamic mac learning.
.IP "\fBfdb/flush\fR [\fIbridge\fR]"
Flushes \fIbridge\fR MAC address learning table, or all learning tables
if no \fIbridge\fR is given.
Currently there is an option to add/flush/show ARP/ND neighbor. This covers L3 side. For L2 side, there is only fdb show command. This patch gives an option to add/del an fdb entry via ovs-appctl. CLI command looks like: To add: ovs-appctl fdb/add <bridge> <port> <vlan> <Mac> ovs-appctl fdb/add br0 p1 0 50:54:00:00:00:05 To del: ovs-appctl fdb/del <bridge> <port> <vlan> <Mac> ovs-appctl fdb/del br0 p1 0 50:54:00:00:00:05 Added two new APIs to provide convenient interface to add and delete static-macs. bool xlate_add_static_mac_entry(const struct ofproto_dpif *, ofp_port_t in_port, struct eth_addr dl_src, int vlan); bool xlate_delete_static_mac_entry(const struct ofproto_dpif *, struct eth_addr dl_src, int vlan); 1. Static entry should not age. To indicate that entry being programmed is a static entry, 'expires' field in 'struct mac_entry' will be set to a MAC_ENTRY_AGE_STATIC_ENTRY. A check for this value is made while deleting mac entry as part of regular aging process. 2. Another change to of mac-update logic, when a packet with same dl_src as that of a static-mac entry arrives on any port, the logic will not modify the expires field. 3. While flushing fdb entries, made sure static ones are not evicted. 4. Updated "ovs-appctl fdb/stats-show br0" to display numberof static entries in switch Added following tests: ofproto-dpif - static-mac add/del/flush ofproto-dpif - static-mac mac moves Added to NEWS about this functionality. Updated ovs-vswitchd man page with CLI commands. Signed-off-by: Vasu Dasari <vdasari@gmail.com> Reported-at: https://mail.openvswitch.org/pipermail/ovs-discuss/2019-June/048894.html Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1597752 Tested-by: Eelco Chaudron <echaudro@redhat.com> --- v1: - Fixed 0-day robot warnings v2: - Fix valgrind error in the modified code in mac_learning_insert() where a read is is performed on e->expires which is not initialized v3: - Addressed code review comments - Added more documentation - Fixed mac_entry_age() and is_mac_learning_update_needed() to have common understanding of return values when mac_entry is a static one. - Added NEWS item v4: - Addressed code review comments - Static entries will not be purged when fdb/flush is performed. - Static entries will not be overwritten when packet with same dl_src arrives on any port of switch - Provided bit more detail while doing fdb/add, to indicate if static-mac is overriding already present entry - Separated test cases for a bit more clarity v5: - Addressed code review comments - Added new total_static counter to count number of static entries. - Removed mac_entry_set_idle_time() - Added mac_learning_add_static_entry() and mac_learning_del_static_entry() - Modified APIs xlate_add_static_mac_entry() and xlate_delete_static_mac_entry() return 0 on success else a failure code v6: - Fixed a probable bug with Eelco's code review comments in is_mac_learning_update_needed() v7: - Added a ovs-vswitchd.8 man page entry for fdb add/del commands --- NEWS | 2 + lib/mac-learning.c | 151 +++++++++++++++++++++++++++++++---- lib/mac-learning.h | 17 ++++ ofproto/ofproto-dpif-xlate.c | 48 +++++++++-- ofproto/ofproto-dpif-xlate.h | 5 ++ ofproto/ofproto-dpif.c | 95 +++++++++++++++++++++- tests/ofproto-dpif.at | 93 +++++++++++++++++++++ vswitchd/ovs-vswitchd.8.in | 5 ++ 8 files changed, 387 insertions(+), 29 deletions(-)