diff options
Diffstat (limited to 'src/vnet/dhcpv6/proxy_node.c')
| -rw-r--r-- | src/vnet/dhcpv6/proxy_node.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/src/vnet/dhcpv6/proxy_node.c b/src/vnet/dhcpv6/proxy_node.c index 4dd2239ffaa..77afef2aa7d 100644 --- a/src/vnet/dhcpv6/proxy_node.c +++ b/src/vnet/dhcpv6/proxy_node.c @@ -19,6 +19,8 @@ #include <vnet/pg/pg.h> #include <vnet/dhcpv6/proxy.h> #include <vnet/fib/ip6_fib.h> +#include <vnet/mfib/mfib_table.h> +#include <vnet/mfib/ip6_mfib.h> static char * dhcpv6_proxy_error_strings[] = { #define dhcpv6_proxy_error(n,s) s, @@ -819,7 +821,7 @@ int dhcpv6_proxy_set_server_2 (ip6_address_t *addr, ip6_address_t *src_address, u32 server_fib_index = 0; u32 rx_fib_index = 0; - rx_fib_index = ip6_fib_table_find_or_create_and_lock(rx_fib_id); + rx_fib_index = ip6_mfib_table_find_or_create_and_lock(rx_fib_id); server_fib_index = ip6_fib_table_find_or_create_and_lock(server_fib_id); if (is_del) @@ -848,8 +850,10 @@ int dhcpv6_proxy_set_server_2 (ip6_address_t *addr, ip6_address_t *src_address, if (rx_fib_id == 0) { server = pool_elt_at_index (dm->dhcp6_servers, 0); - - goto initialize_it; + if (server->valid) + goto reconfigure_it; + else + goto initialize_it; } if (rx_fib_index < vec_len(dm->dhcp6_server_index_by_rx_fib_index)) @@ -866,6 +870,42 @@ int dhcpv6_proxy_set_server_2 (ip6_address_t *addr, ip6_address_t *src_address, pool_get (dm->dhcp6_servers, server); initialize_it: + { + const mfib_prefix_t all_dhcp_servers = { + .fp_len = 128, + .fp_proto = FIB_PROTOCOL_IP6, + .fp_grp_addr = { + .ip6 = dm->all_dhcpv6_server_relay_agent_address, + } + }; + const fib_route_path_t path_for_us = { + .frp_proto = FIB_PROTOCOL_IP6, + .frp_addr = zero_addr, + .frp_sw_if_index = 0xffffffff, + .frp_fib_index = ~0, + .frp_weight = 0, + .frp_flags = FIB_ROUTE_PATH_LOCAL, + }; + mfib_table_entry_path_update(rx_fib_index, + &all_dhcp_servers, + MFIB_SOURCE_DHCP, + &path_for_us, + MFIB_ITF_FLAG_FORWARD); + /* + * Each interface that is enabled in this table, needs to be added + * as an accepting interface, but this is not easily doable in VPP. + * So we cheat. Add a flag to the entry that indicates accept form + * any interface. + * We will still only accept on v6 enabled interfaces, since the input + * feature ensures this. + */ + mfib_table_entry_update(rx_fib_index, + &all_dhcp_servers, + MFIB_SOURCE_DHCP, + MFIB_ENTRY_FLAG_ACCEPT_ALL_ITF); + } + +reconfigure_it: copy_ip6_address(&server->dhcp6_server, addr); copy_ip6_address(&server->dhcp6_src_address, src_address); |