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authorBenoît Ganne <bganne@cisco.com>2019-06-26 14:05:51 +0200
committerNeale Ranns <nranns@cisco.com>2019-07-02 14:19:15 +0000
commit3c0d84c989e9928d5ca9ffe3aceb826864bd525a (patch)
tree4f92624d794c7a771cc595632b29a02ab78283c7 /src/plugins/gbp/gbp_subnet.c
parentcfc7a107e6cb8be6e7c53a08e23a146c431c8e90 (diff)
gbp: add anonymous l3-out subnets
An anonymous l3-out subnet is a locally attached l3-out subnet, and differs from regular l3-out subnets in the way adjacencies are managed. It is required for the anonymous l3-out external interfaces to correctly classify locally attached l3-out hosts. Type: feature Change-Id: Ie7bc88b1f22abc4d0b46db5f3cfbf208bc53ba5f Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/plugins/gbp/gbp_subnet.c')
-rw-r--r--src/plugins/gbp/gbp_subnet.c77
1 files changed, 55 insertions, 22 deletions
diff --git a/src/plugins/gbp/gbp_subnet.c b/src/plugins/gbp/gbp_subnet.c
index e2dfd3799b0..bb069ffe892 100644
--- a/src/plugins/gbp/gbp_subnet.c
+++ b/src/plugins/gbp/gbp_subnet.c
@@ -180,8 +180,9 @@ gbp_subnet_external_add (gbp_subnet_t * gs, u32 sw_if_index, sclass_t sclass)
}
static int
-gbp_subnet_l3_out_add (gbp_subnet_t * gs, sclass_t sclass)
+gbp_subnet_l3_out_add (gbp_subnet_t * gs, sclass_t sclass, int is_anon)
{
+ fib_entry_flag_t flags;
dpo_id_t gpd = DPO_INVALID;
gs->gs_l3_out.gs_sclass = sclass;
@@ -190,11 +191,14 @@ gbp_subnet_l3_out_add (gbp_subnet_t * gs, sclass_t sclass)
gbp_route_domain_get_scope (gs->gs_rd),
gs->gs_l3_out.gs_sclass, ~0, &gpd);
+ flags = FIB_ENTRY_FLAG_INTERPOSE;
+ if (is_anon)
+ flags |= FIB_ENTRY_FLAG_COVERED_INHERIT;
+
gs->gs_fei = fib_table_entry_special_dpo_add (gs->gs_key->gsk_fib_index,
&gs->gs_key->gsk_pfx,
FIB_SOURCE_SPECIAL,
- FIB_ENTRY_FLAG_INTERPOSE,
- &gpd);
+ flags, &gpd);
dpo_reset (&gpd);
@@ -208,10 +212,11 @@ gbp_subnet_del_i (index_t gsi)
gs = pool_elt_at_index (gbp_subnet_pool, gsi);
- if (GBP_SUBNET_L3_OUT == gs->gs_type)
- fib_table_entry_delete_index (gs->gs_fei, FIB_SOURCE_SPECIAL);
- else
- fib_table_entry_delete_index (gs->gs_fei, FIB_SOURCE_PLUGIN_HI);
+ fib_table_entry_delete_index (gs->gs_fei,
+ (GBP_SUBNET_L3_OUT == gs->gs_type
+ || GBP_SUBNET_ANON_L3_OUT ==
+ gs->gs_type) ? FIB_SOURCE_SPECIAL :
+ FIB_SOURCE_PLUGIN_HI);
gbp_subnet_db_del (gs);
gbp_route_domain_unlock (gs->gs_rd);
@@ -255,6 +260,18 @@ gbp_subnet_add (u32 rd_id,
u32 fib_index;
int rv;
+ switch (type)
+ {
+ case GBP_SUBNET_TRANSPORT:
+ case GBP_SUBNET_STITCHED_INTERNAL:
+ case GBP_SUBNET_STITCHED_EXTERNAL:
+ case GBP_SUBNET_L3_OUT:
+ case GBP_SUBNET_ANON_L3_OUT:
+ break;
+ default:
+ return (VNET_API_ERROR_INCORRECT_ADJACENCY_TYPE);
+ }
+
grdi = gbp_route_domain_find_and_lock (rd_id);
if (~0 == grdi)
@@ -291,7 +308,10 @@ gbp_subnet_add (u32 rd_id,
rv = gbp_subnet_transport_add (gs);
break;
case GBP_SUBNET_L3_OUT:
- rv = gbp_subnet_l3_out_add (gs, sclass);
+ rv = gbp_subnet_l3_out_add (gs, sclass, 0 /* is_anon */ );
+ break;
+ case GBP_SUBNET_ANON_L3_OUT:
+ rv = gbp_subnet_l3_out_add (gs, sclass, 1 /* is_anon */ );
break;
}
@@ -302,6 +322,7 @@ static clib_error_t *
gbp_subnet_add_del_cli (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
+ unformat_input_t _line_input, *line_input = &_line_input;
vnet_main_t *vnm = vnet_get_main ();
fib_prefix_t pfx = {.fp_addr = ip46_address_initializer };
int length;
@@ -312,39 +333,47 @@ gbp_subnet_add_del_cli (vlib_main_t * vm,
int is_add = 1;
int rv;
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ /* Get a line of input. */
+ if (!unformat_user (input, unformat_line_input, line_input))
+ return 0;
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
- if (unformat (input, "del"))
+ if (unformat (line_input, "del"))
is_add = 0;
- else if (unformat (input, "rd %d", &rd_id))
+ else if (unformat (line_input, "rd %d", &rd_id))
;
else
if (unformat
- (input, "prefix %U/%d", unformat_ip4_address, &pfx.fp_addr.ip4,
- &length))
+ (line_input, "prefix %U/%d", unformat_ip4_address,
+ &pfx.fp_addr.ip4, &length))
pfx.fp_proto = FIB_PROTOCOL_IP4;
else
if (unformat
- (input, "prefix %U/%d", unformat_ip6_address, &pfx.fp_addr.ip6,
- &length))
+ (line_input, "prefix %U/%d", unformat_ip6_address,
+ &pfx.fp_addr.ip6, &length))
pfx.fp_proto = FIB_PROTOCOL_IP6;
- else if (unformat (input, "type transport"))
+ else if (unformat (line_input, "type transport"))
type = GBP_SUBNET_TRANSPORT;
- else if (unformat (input, "type internal"))
+ else if (unformat (line_input, "type stitched-internal"))
type = GBP_SUBNET_STITCHED_INTERNAL;
- else if (unformat (input, "type external"))
+ else if (unformat (line_input, "type stitched-external"))
type = GBP_SUBNET_STITCHED_EXTERNAL;
- else if (unformat (input, "type l3out"))
+ else if (unformat (line_input, "type anon-l3-out"))
+ type = GBP_SUBNET_ANON_L3_OUT;
+ else if (unformat (line_input, "type l3-out"))
type = GBP_SUBNET_L3_OUT;
else
if (unformat_user
- (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
+ (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
;
- else if (unformat (input, "sclass %u", &sclass))
+ else if (unformat (line_input, "sclass %u", &sclass))
;
else
- break;
+ return clib_error_return (0, "unknown input `%U'",
+ format_unformat_error, line_input);
}
+ unformat_free (line_input);
pfx.fp_len = length;
@@ -408,6 +437,7 @@ gbp_subnet_walk (gbp_subnet_cb_t cb, void *ctx)
sclass = gs->gs_stitched_external.gs_sclass;
break;
case GBP_SUBNET_L3_OUT:
+ case GBP_SUBNET_ANON_L3_OUT:
sclass = gs->gs_l3_out.gs_sclass;
break;
}
@@ -440,6 +470,8 @@ format_gbp_subnet_type (u8 * s, va_list * args)
return (format (s, "transport"));
case GBP_SUBNET_L3_OUT:
return (format (s, "l3-out"));
+ case GBP_SUBNET_ANON_L3_OUT:
+ return (format (s, "anon-l3-out"));
}
return (format (s, "unknown"));
@@ -473,6 +505,7 @@ format_gbp_subnet (u8 * s, va_list * args)
vnet_get_main (), gs->gs_stitched_external.gs_sw_if_index);
break;
case GBP_SUBNET_L3_OUT:
+ case GBP_SUBNET_ANON_L3_OUT:
s = format (s, " {sclass:%d}", gs->gs_l3_out.gs_sclass);
break;
}