From 3d460bd9bed8e1b77609ef404018ecfac7c29e9e Mon Sep 17 00:00:00 2001 From: Jon Loeliger Date: Thu, 1 Feb 2018 16:36:12 -0600 Subject: VXLAN: Allow user to specify a custom vxlan tunnel instance id. If one is not selected by the user, the next available id will be allocated, thus maintaining backward compatibility. Change-Id: I4691ed0638b8072f9cfa9f20b9fe4f981e708800 Signed-off-by: Jon Loeliger --- src/vnet/api_errno.h | 3 +- src/vnet/vxlan/vxlan.api | 18 +++++++- src/vnet/vxlan/vxlan.c | 106 ++++++++++++++++++++++++++++++++++++++------- src/vnet/vxlan/vxlan.h | 13 ++++++ src/vnet/vxlan/vxlan_api.c | 3 ++ 5 files changed, 125 insertions(+), 18 deletions(-) (limited to 'src/vnet') diff --git a/src/vnet/api_errno.h b/src/vnet/api_errno.h index 707fec4be2f..ed8e7bbb649 100644 --- a/src/vnet/api_errno.h +++ b/src/vnet/api_errno.h @@ -135,7 +135,8 @@ _(ACL_IN_USE_INBOUND, -142, "Inbound ACL in use") \ _(ACL_IN_USE_OUTBOUND, -143, "Outbound ACL in use") \ _(INIT_FAILED, -144, "Initialization Failed") \ _(NETLINK_ERROR, -145, "netlink error") \ -_(BIER_BSL_UNSUP, -146, "BIER bit-string-length unsupported") +_(BIER_BSL_UNSUP, -146, "BIER bit-string-length unsupported") \ +_(INSTANCE_IN_USE, -147, "Instance in use") typedef enum { diff --git a/src/vnet/vxlan/vxlan.api b/src/vnet/vxlan/vxlan.api index d8ace33eb87..3a07d92f79b 100644 --- a/src/vnet/vxlan/vxlan.api +++ b/src/vnet/vxlan/vxlan.api @@ -13,7 +13,21 @@ * limitations under the License. */ -option version = "1.0.0"; +option version = "1.1.0"; + +/** \brief Create or delete a VXLAN tunnel + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - Use 1 to create the tunnel, 0 to remove it + @param is_ipv6 - Use 0 for IPv4, 1 for IPv6 + @param instance - optional unique custom device instance, else ~0. + @param src_address - Source IP address + @param dst_address - Destination IP address, can be multicast + @param mcast_sw_if_index - Interface for multicast destination + @param encap_vrf_id - Encap route table FIB index + @param decap_next_index - Name of decap next graph node + @param vni - The VXLAN Network Identifier, uint24 +*/ define vxlan_add_del_tunnel { @@ -21,6 +35,7 @@ define vxlan_add_del_tunnel u32 context; u8 is_add; u8 is_ipv6; + u32 instance; /* If non-~0, specifies a custom dev instance */ u8 src_address[16]; u8 dst_address[16]; u32 mcast_sw_if_index; @@ -47,6 +62,7 @@ define vxlan_tunnel_details { u32 context; u32 sw_if_index; + u32 instance; u8 src_address[16]; u8 dst_address[16]; u32 mcast_sw_if_index; diff --git a/src/vnet/vxlan/vxlan.c b/src/vnet/vxlan/vxlan.c index 64936c0e310..26844623edd 100644 --- a/src/vnet/vxlan/vxlan.c +++ b/src/vnet/vxlan/vxlan.c @@ -55,9 +55,16 @@ u8 * format_vxlan_tunnel (u8 * s, va_list * args) { vxlan_tunnel_t * t = va_arg (*args, vxlan_tunnel_t *); vxlan_main_t * ngm = &vxlan_main; + u32 dev_instance; + u32 user_instance; - s = format (s, "[%d] src %U dst %U vni %d fib-idx %d sw-if-idx %d ", - t - ngm->tunnels, + dev_instance = t - ngm->tunnels; + user_instance = t->user_instance; + + s = format (s, + "[%d] instance %d src %U dst %U vni %d fib-idx %d sw-if-idx %d ", + dev_instance, + user_instance, format_ip46_address, &t->src, IP46_TYPE_ANY, format_ip46_address, &t->dst, IP46_TYPE_ANY, t->vni, t->encap_fib_index, t->sw_if_index); @@ -76,7 +83,18 @@ u8 * format_vxlan_tunnel (u8 * s, va_list * args) static u8 * format_vxlan_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); - return format (s, "vxlan_tunnel%d", dev_instance); + vxlan_main_t * vxm = &vxlan_main; + vxlan_tunnel_t *t; + + if (dev_instance == ~0) + return format(s, ""); + + if (dev_instance >= vec_len(vxm->tunnels)) + return format(s, ""); + + t = pool_elt_at_index(vxm->tunnels, dev_instance); + + return format (s, "vxlan_tunnel%d", t->user_instance); } static clib_error_t * @@ -89,9 +107,16 @@ vxlan_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) return /* no error */ 0; } +static int +vxlan_name_renumber (vnet_hw_interface_t *hi, u32 new_dev_instance) +{ + return 0; +} + VNET_DEVICE_CLASS (vxlan_device_class,static) = { .name = "VXLAN", .format_device_name = format_vxlan_name, + .name_renumber = vxlan_name_renumber, .format_tx_trace = format_vxlan_encap_trace, .admin_up_down_function = vxlan_interface_admin_up_down, }; @@ -348,10 +373,12 @@ int vnet_vxlan_add_del_tunnel key6.vni = clib_host_to_net_u32 (a->vni << 8); p = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6); } - + if (a->is_add) { l2input_main_t * l2im = &l2input_main; + u32 dev_instance; /* real dev instance tunnel index */ + u32 user_instance; /* request and actual instance number */ /* adding a tunnel: tunnel must not already exist */ if (p) @@ -365,7 +392,8 @@ int vnet_vxlan_add_del_tunnel pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES); memset (t, 0, sizeof (*t)); - + dev_instance = t - vxm->tunnels; + /* copy from arg structure */ #define _(x) t->x = a->x; foreach_copy_field; @@ -378,6 +406,22 @@ int vnet_vxlan_add_del_tunnel return rv; } + /* + * Reconcile the real dev_instance and a possible requested instance. + */ + user_instance = a->instance; + if (user_instance == ~0) + user_instance = dev_instance; + if (hash_get (vxm->instance_used, user_instance)) + { + pool_put (vxm->tunnels, t); + return VNET_API_ERROR_INSTANCE_IN_USE; + } + hash_set (vxm->instance_used, user_instance, 1); + + t->dev_instance = dev_instance; /* actual */ + t->user_instance = user_instance; /* name */ + /* copy the key */ if (is_ip6) hash_set_mem_alloc (&vxm->vxlan6_tunnel_by_key, &key6, @@ -394,11 +438,13 @@ int vnet_vxlan_add_del_tunnel _vec_len (vxm->free_vxlan_tunnel_hw_if_indices) -= 1; hi = vnet_get_hw_interface (vnm, hw_if_index); - hi->dev_instance = t - vxm->tunnels; - hi->hw_instance = hi->dev_instance; + hi->dev_instance = dev_instance; + hi->hw_instance = dev_instance; - /* clear old stats of freed tunnel before reuse */ sw_if_index = hi->sw_if_index; + vnet_interface_name_renumber(sw_if_index, user_instance); + + /* clear old stats of freed tunnel before reuse */ vnet_interface_counter_lock(im); vlib_zero_combined_counter (&im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX], sw_if_index); @@ -425,7 +471,7 @@ int vnet_vxlan_add_del_tunnel t->sw_if_index = sw_if_index = hi->sw_if_index; vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index, ~0); - vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels; + vxm->tunnel_index_by_sw_if_index[sw_if_index] = dev_instance; /* setup l2 input config with l2 feature and bd 0 to drop packet */ vec_validate (l2im->configs, sw_if_index); @@ -455,7 +501,7 @@ int vnet_vxlan_add_del_tunnel (t->encap_fib_index, &tun_dst_pfx, FIB_SOURCE_RR, FIB_ENTRY_FLAG_NONE); t->sibling_index = fib_entry_child_add - (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, t - vxm->tunnels); + (t->fib_entry_index, FIB_NODE_TYPE_VXLAN_TUNNEL, dev_instance); vxlan_tunnel_restack_dpo(t); } else @@ -538,18 +584,19 @@ int vnet_vxlan_add_del_tunnel if (!p) return VNET_API_ERROR_NO_SUCH_ENTRY; - t = pool_elt_at_index (vxm->tunnels, p[0]); + u32 instance = p[0]; + t = pool_elt_at_index (vxm->tunnels, instance); sw_if_index = t->sw_if_index; - vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */); - vnet_sw_interface_t * si = vnet_get_sw_interface (vnm, t->sw_if_index); + vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */); + vnet_sw_interface_t * si = vnet_get_sw_interface (vnm, sw_if_index); si->flags |= VNET_SW_INTERFACE_FLAG_HIDDEN; /* make sure tunnel is removed from l2 bd or xconnect */ - set_int_l2_mode(vxm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0, 0, 0, 0); + set_int_l2_mode(vxm->vlib_main, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0); vec_add1 (vxm->free_vxlan_tunnel_hw_if_indices, t->hw_if_index); - vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0; + vxm->tunnel_index_by_sw_if_index[sw_if_index] = ~0; if (!is_ip6) hash_unset (vxm->vxlan4_tunnel_by_key, key4.as_u64); @@ -567,6 +614,12 @@ int vnet_vxlan_add_del_tunnel mcast_shared_remove(&t->dst); } + vnet_hw_interface_t *hi; + hi = vnet_get_hw_interface (vnm, t->hw_if_index); + hi->dev_instance = ~0; + + hash_unset (vxlan_main.instance_used, instance); + fib_node_deinit(&t->node); vec_free (t->rewrite); pool_put (vxm->tunnels, t); @@ -621,6 +674,7 @@ vxlan_add_del_tunnel_command_fn (vlib_main_t * vm, u8 grp_set = 0; u8 ipv4_set = 0; u8 ipv6_set = 0; + u32 instance = ~0; u32 encap_fib_index = 0; u32 mcast_sw_if_index = ~0; u32 decap_next_index = VXLAN_INPUT_NEXT_L2_INPUT; @@ -644,6 +698,8 @@ vxlan_add_del_tunnel_command_fn (vlib_main_t * vm, { is_add = 0; } + else if (unformat (line_input, "instance %d", &instance)) + ; else if (unformat (line_input, "src %U", unformat_ip4_address, &src.ip4)) { @@ -770,11 +826,12 @@ vxlan_add_del_tunnel_command_fn (vlib_main_t * vm, a->is_add = is_add; a->is_ip6 = ipv6_set; + a->instance = instance; #define _(x) a->x = x; foreach_copy_field; #undef _ - + rv = vnet_vxlan_add_del_tunnel (a, &tunnel_sw_if_index); switch(rv) @@ -793,6 +850,14 @@ vxlan_add_del_tunnel_command_fn (vlib_main_t * vm, error = clib_error_return (0, "tunnel does not exist..."); goto done; + case VNET_API_ERROR_INVALID_ARGUMENT: + error = clib_error_return (0, "Invalid argument"); + goto done; + + case VNET_API_ERROR_INSTANCE_IN_USE: + error = clib_error_return (0, "Instance is in use"); + goto done; + default: error = clib_error_return (0, "vnet_vxlan_add_del_tunnel returned %d", rv); @@ -822,6 +887,8 @@ done: * @cliexpar * Example of how to create a VXLAN Tunnel: * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 encap-vrf-id 7} + * Example of how to create a VXLAN Tunnel with a known name, vxlan_tunnel42: + * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 instance 42} * Example of how to delete a VXLAN Tunnel: * @cliexcmd{create vxlan tunnel src 10.0.3.1 dst 10.0.3.3 vni 13 del} ?*/ @@ -831,6 +898,7 @@ VLIB_CLI_COMMAND (create_vxlan_tunnel_command, static) = { .short_help = "create vxlan tunnel src " " {dst |group } vni " + " [instance ]" " [encap-vrf-id ] [decap-next [l2|node ]] [del]", .function = vxlan_add_del_tunnel_command_fn, }; @@ -1075,3 +1143,9 @@ clib_error_t *vxlan_init (vlib_main_t *vm) } VLIB_INIT_FUNCTION(vxlan_init); + +/* + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/vxlan/vxlan.h b/src/vnet/vxlan/vxlan.h index f428ee54d78..e50ff6b169e 100644 --- a/src/vnet/vxlan/vxlan.h +++ b/src/vnet/vxlan/vxlan.h @@ -111,6 +111,9 @@ typedef struct { * The tunnels sibling index on the FIB entry's dependency list. */ u32 sibling_index; + + u32 dev_instance; /* Real device instance in tunnel vector */ + u32 user_instance; /* Instance name being shown to user */ } vxlan_tunnel_t; #define foreach_vxlan_input_next \ @@ -156,6 +159,9 @@ typedef struct { /* convenience */ vlib_main_t * vlib_main; vnet_main_t * vnet_main; + + /* Record used instances */ + uword *instance_used; } vxlan_main_t; extern vxlan_main_t vxlan_main; @@ -173,6 +179,7 @@ typedef struct { /* we normally use is_ip4, but since this adds to the * structure, this seems less of abreaking change */ u8 is_ip6; + u32 instance; ip46_address_t src, dst; u32 mcast_sw_if_index; u32 encap_fib_index; @@ -186,3 +193,9 @@ int vnet_vxlan_add_del_tunnel void vnet_int_vxlan_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable); #endif /* included_vnet_vxlan_h */ + +/* + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/vxlan/vxlan_api.c b/src/vnet/vxlan/vxlan_api.c index 5c5e946343e..8b19c3a5c44 100644 --- a/src/vnet/vxlan/vxlan_api.c +++ b/src/vnet/vxlan/vxlan_api.c @@ -83,6 +83,7 @@ static void vl_api_vxlan_add_del_tunnel_t_handler vnet_vxlan_add_del_tunnel_args_t a = { .is_add = mp->is_add, .is_ip6 = mp->is_ipv6, + .instance = ntohl (mp->instance), .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index), .encap_fib_index = fib_index, .decap_next_index = ntohl (mp->decap_next_index), @@ -139,6 +140,8 @@ static void send_vxlan_tunnel_details memcpy (rmp->dst_address, t->dst.ip4.as_u8, 4); rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id); } + + rmp->instance = htonl (t->user_instance); rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index); rmp->vni = htonl (t->vni); rmp->decap_next_index = htonl (t->decap_next_index); -- cgit 1.2.3-korg