diff options
Diffstat (limited to 'src/plugins')
| -rw-r--r-- | src/plugins/snat/snat.c | 124 | ||||
| -rw-r--r-- | src/plugins/snat/snat.h | 3 |
2 files changed, 127 insertions, 0 deletions
diff --git a/src/plugins/snat/snat.c b/src/plugins/snat/snat.c index bc9956841d2..94e05078529 100644 --- a/src/plugins/snat/snat.c +++ b/src/plugins/snat/snat.c @@ -16,6 +16,8 @@ */ #include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/ip/ip4.h> #include <vnet/plugin/plugin.h> #include <vlibapi/api.h> #include <snat/snat.h> @@ -1146,6 +1148,15 @@ static void plugin_custom_dump_configure (snat_main_t * sm) #undef _ } +static void +snat_ip4_add_del_interface_address_cb (ip4_main_t * im, + uword opaque, + u32 sw_if_index, + ip4_address_t * address, + u32 address_length, + u32 if_address_index, + u32 is_delete); + static clib_error_t * snat_init (vlib_main_t * vm) { snat_main_t * sm = &snat_main; @@ -1158,6 +1169,7 @@ static clib_error_t * snat_init (vlib_main_t * vm) vlib_thread_main_t *tm = vlib_get_thread_main (); uword *bitmap = 0; u32 i; + ip4_add_del_interface_address_callback_t cb4; name = format (0, "snat_%08x%c", api_version, 0); @@ -1205,6 +1217,12 @@ static clib_error_t * snat_init (vlib_main_t * vm) plugin_custom_dump_configure (sm); vec_free(name); + /* Set up the interface address add/del callback */ + cb4.function = snat_ip4_add_del_interface_address_cb; + cb4.function_opaque = 0; + + vec_add1 (im->add_del_interface_address_callbacks, cb4); + return error; } @@ -1955,3 +1973,109 @@ VLIB_CLI_COMMAND (show_snat_command, static) = { .short_help = "show snat", .function = show_snat_command_fn, }; + + +static void +snat_ip4_add_del_interface_address_cb (ip4_main_t * im, + uword opaque, + u32 sw_if_index, + ip4_address_t * address, + u32 address_length, + u32 if_address_index, + u32 is_delete) +{ + snat_main_t *sm = &snat_main; + int i, j; + + for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++) + { + if (sw_if_index == sm->auto_add_sw_if_indices[i]) + { + if (!is_delete) + { + /* Don't trip over lease renewal, static config */ + for (j = 0; j < vec_len(sm->addresses); j++) + if (sm->addresses[j].addr.as_u32 == address->as_u32) + return; + + snat_add_address (sm, address); + return; + } + else + { + (void) snat_del_address(sm, address[0]); + return; + } + } + } +} + + +static int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index) +{ + ip4_main_t * ip4_main = sm->ip4_main; + ip4_address_t * first_int_addr; + int i; + + first_int_addr = ip4_interface_first_address (ip4_main, sw_if_index, + 0 /* just want the address*/); + + for (i = 0; i < vec_len(sm->auto_add_sw_if_indices); i++) + { + if (sm->auto_add_sw_if_indices[i] == sw_if_index) + return 0; + } + + /* add to the auto-address list */ + vec_add1(sm->auto_add_sw_if_indices, sw_if_index); + + /* If the address is already bound - or static - add it now */ + if (first_int_addr) + snat_add_address (sm, first_int_addr); + + return 0; +} + +static clib_error_t * +snat_add_interface_address_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + snat_main_t *sm = &snat_main; + unformat_input_t _line_input, *line_input = &_line_input; + u32 sw_if_index; + int rv; + + /* 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 (line_input, "%U", unformat_vnet_sw_interface, + sm->vnet_main, &sw_if_index)) + ; + else + return clib_error_return (0, "unknown input '%U'", + format_unformat_error, line_input); + } + + rv = snat_add_interface_address (sm, sw_if_index); + + switch (rv) + { + case 0: + break; + + default: + return clib_error_return (0, "snat_add_interface_address returned %d", + rv); + } + return 0; +} + +VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = { + .path = "snat add interface address", + .short_help = "snat add interface address <interface>", + .function = snat_add_interface_address_command_fn, +}; diff --git a/src/plugins/snat/snat.h b/src/plugins/snat/snat.h index cb31dc51423..71f254feede 100644 --- a/src/plugins/snat/snat.h +++ b/src/plugins/snat/snat.h @@ -179,6 +179,9 @@ typedef struct { /* Vector of outside addresses */ snat_address_t * addresses; + /* sw_if_indices whose intfc addresses should be auto-added */ + u32 * auto_add_sw_if_indices; + /* Randomize port allocation order */ u32 random_seed; |