diff options
Diffstat (limited to 'src/vcl/vppcom.c')
| -rw-r--r-- | src/vcl/vppcom.c | 3258 |
1 files changed, 3258 insertions, 0 deletions
diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c new file mode 100644 index 00000000000..0f30c60c803 --- /dev/null +++ b/src/vcl/vppcom.c @@ -0,0 +1,3258 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <signal.h> +#include <svm/svm_fifo_segment.h> +#include <vlibmemory/api.h> +#include <vpp/api/vpe_msg_enum.h> +#include <vnet/session/application_interface.h> +#include <vcl/vppcom.h> +#include <vlib/unix/unix.h> +#include <vppinfra/vec_bootstrap.h> + +#define vl_typedefs /* define message structures */ +#include <vpp/api/vpe_all_api_h.h> +#undef vl_typedefs + +/* declare message handlers for each api */ + +#define vl_endianfun /* define message structures */ +#include <vpp/api/vpe_all_api_h.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) +#define vl_printfun +#include <vpp/api/vpe_all_api_h.h> +#undef vl_printfun + +#if (CLIB_DEBUG > 0) +/* Set VPPCOM_DEBUG 2 for connection debug, 3 for read/write debug output */ +#define VPPCOM_DEBUG 1 +#else +#define VPPCOM_DEBUG 0 +#endif + +/* + * VPPCOM Private definitions and functions. + */ +typedef enum +{ + STATE_APP_START, + STATE_APP_CONN_VPP, + STATE_APP_ENABLED, + STATE_APP_ATTACHED, +} app_state_t; + +typedef enum +{ + STATE_START, + STATE_CONNECT, + STATE_LISTEN, + STATE_ACCEPT, + STATE_DISCONNECT, + STATE_FAILED +} session_state_t; + +typedef struct epoll_event vppcom_epoll_event_t; + +typedef struct +{ + u32 next_sid; + u32 prev_sid; + u32 vep_idx; + vppcom_epoll_event_t ev; +#define VEP_DEFAULT_ET_MASK (EPOLLIN|EPOLLOUT) + u32 et_mask; +} vppcom_epoll_t; + +typedef struct +{ + u8 is_ip4; + ip46_address_t ip46; +} vppcom_ip46_t; + +typedef struct +{ + volatile session_state_t state; + + svm_fifo_t *server_rx_fifo; + svm_fifo_t *server_tx_fifo; + u32 sm_seg_index; + u64 vpp_session_handle; + unix_shared_memory_queue_t *vpp_event_queue; + + /* Socket configuration state */ + /* TBD: covert 'is_*' vars to bit in u8 flags; */ + u8 is_server; + u8 is_listen; + u8 is_cut_thru; + u8 is_nonblocking; + u8 is_vep; + u8 is_vep_session; + u32 wait_cont_idx; + vppcom_epoll_t vep; + u32 vrf; + vppcom_ip46_t lcl_addr; + vppcom_ip46_t peer_addr; + u16 port; + u8 proto; + u64 client_queue_address; + u64 options[16]; +} session_t; + +typedef struct vppcom_cfg_t_ +{ + u64 heapsize; + u64 segment_baseva; + u32 segment_size; + u32 add_segment_size; + u32 preallocated_fifo_pairs; + u32 rx_fifo_size; + u32 tx_fifo_size; + u32 event_queue_size; + u32 listen_queue_size; + f64 app_timeout; + f64 session_timeout; + f64 accept_timeout; +} vppcom_cfg_t; + +typedef struct vppcom_main_t_ +{ + u8 init; + u32 *client_session_index_fifo; + volatile u32 bind_session_index; + int main_cpu; + + /* vpe input queue */ + unix_shared_memory_queue_t *vl_input_queue; + + /* API client handle */ + u32 my_client_index; + + /* Session pool */ + clib_spinlock_t sessions_lockp; + session_t *sessions; + + /* Hash table for disconnect processing */ + uword *session_index_by_vpp_handles; + + /* Select bitmaps */ + clib_bitmap_t *rd_bitmap; + clib_bitmap_t *wr_bitmap; + clib_bitmap_t *ex_bitmap; + + /* Our event queue */ + unix_shared_memory_queue_t *app_event_queue; + + /* unique segment name counter */ + u32 unique_segment_index; + + pid_t my_pid; + + /* For deadman timers */ + clib_time_t clib_time; + + /* State of the connection, shared between msg RX thread and main thread */ + volatile app_state_t app_state; + + vppcom_cfg_t cfg; + + /* VNET_API_ERROR_FOO -> "Foo" hash table */ + uword *error_string_by_error_number; +} vppcom_main_t; + +vppcom_main_t vppcom_main = {.my_client_index = ~0 }; + +static const char * +vppcom_app_state_str (app_state_t state) +{ + char *st; + + switch (state) + { + case STATE_APP_START: + st = "STATE_APP_START"; + break; + + case STATE_APP_CONN_VPP: + st = "STATE_APP_CONN_VPP"; + break; + + case STATE_APP_ENABLED: + st = "STATE_APP_ENABLED"; + break; + + case STATE_APP_ATTACHED: + st = "STATE_APP_ATTACHED"; + break; + + default: + st = "UNKNOWN_APP_STATE"; + break; + } + + return st; +} + +static const char * +vppcom_session_state_str (session_state_t state) +{ + char *st; + + switch (state) + { + case STATE_START: + st = "STATE_START"; + break; + + case STATE_CONNECT: + st = "STATE_CONNECT"; + break; + + case STATE_LISTEN: + st = "STATE_LISTEN"; + break; + + case STATE_ACCEPT: + st = "STATE_ACCEPT"; + break; + + case STATE_DISCONNECT: + st = "STATE_DISCONNECT"; + break; + + case STATE_FAILED: + st = "STATE_FAILED"; + break; + + default: + st = "UNKNOWN_STATE"; + break; + } + + return st; +} + +/* + * VPPCOM Utility Functions + */ +static inline int +vppcom_session_at_index (u32 session_index, session_t * volatile *sess) +{ + vppcom_main_t *vcm = &vppcom_main; + + /* Assumes that caller has acquired spinlock: vcm->sessions_lockp */ + if (PREDICT_FALSE ((session_index == ~0) || + pool_is_free_index (vcm->sessions, session_index))) + { + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + *sess = pool_elt_at_index (vcm->sessions, session_index); + return VPPCOM_OK; +} + +static int +vppcom_connect_to_vpp (char *app_name) +{ + api_main_t *am = &api_main; + vppcom_main_t *vcm = &vppcom_main; + + if (VPPCOM_DEBUG > 0) + printf ("\nConnecting to VPP api..."); + if (vl_client_connect_to_vlib ("/vpe-api", app_name, 32) < 0) + { + clib_warning ("[%d] connect to vpp (%s) failed!", + vcm->my_pid, app_name); + return VPPCOM_ECONNREFUSED; + } + + vcm->vl_input_queue = am->shmem_hdr->vl_input_queue; + vcm->my_client_index = am->my_client_index; + if (VPPCOM_DEBUG > 0) + printf (" connected!\n"); + + vcm->app_state = STATE_APP_CONN_VPP; + return VPPCOM_OK; +} + +static u8 * +format_api_error (u8 * s, va_list * args) +{ + vppcom_main_t *vcm = &vppcom_main; + i32 error = va_arg (*args, u32); + uword *p; + + p = hash_get (vcm->error_string_by_error_number, -error); + + if (p) + s = format (s, "%s (%d)", p[0], error); + else + s = format (s, "%d", error); + return s; +} + +static void +vppcom_init_error_string_table (void) +{ + vppcom_main_t *vcm = &vppcom_main; + + vcm->error_string_by_error_number = hash_create (0, sizeof (uword)); + +#define _(n,v,s) hash_set (vcm->error_string_by_error_number, -v, s); + foreach_vnet_api_error; +#undef _ + + hash_set (vcm->error_string_by_error_number, 99, "Misc"); +} + +static inline int +vppcom_wait_for_app_state_change (app_state_t app_state) +{ + vppcom_main_t *vcm = &vppcom_main; + f64 timeout = clib_time_now (&vcm->clib_time) + vcm->cfg.app_timeout; + + while (clib_time_now (&vcm->clib_time) < timeout) + { + if (vcm->app_state == app_state) + return VPPCOM_OK; + } + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] timeout waiting for state %s (%d)", vcm->my_pid, + vppcom_app_state_str (app_state), app_state); + return VPPCOM_ETIMEDOUT; +} + +static inline int +vppcom_wait_for_session_state_change (u32 session_index, + session_state_t state, + f64 wait_for_time) +{ + vppcom_main_t *vcm = &vppcom_main; + f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; + session_t *volatile session; + int rv; + + do + { + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + return rv; + } + if (session->state == state) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + return VPPCOM_OK; + } + clib_spinlock_unlock (&vcm->sessions_lockp); + } + while (clib_time_now (&vcm->clib_time) < timeout); + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] timeout waiting for state %s (%d)", vcm->my_pid, + vppcom_session_state_str (state), state); + return VPPCOM_ETIMEDOUT; +} + +static inline int +vppcom_wait_for_client_session_index (f64 wait_for_time) +{ + vppcom_main_t *vcm = &vppcom_main; + f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; + + do + { + if (clib_fifo_elts (vcm->client_session_index_fifo)) + return VPPCOM_OK; + } + while (clib_time_now (&vcm->clib_time) < timeout); + + if (wait_for_time == 0) + return VPPCOM_EAGAIN; + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] timeout waiting for client_session_index", + vcm->my_pid); + return VPPCOM_ETIMEDOUT; +} + +/* + * VPP-API message functions + */ +static void +vppcom_send_session_enable_disable (u8 is_enable) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_session_enable_disable_t *bmp; + bmp = vl_msg_api_alloc (sizeof (*bmp)); + memset (bmp, 0, sizeof (*bmp)); + + bmp->_vl_msg_id = ntohs (VL_API_SESSION_ENABLE_DISABLE); + bmp->client_index = vcm->my_client_index; + bmp->context = htonl (0xfeedface); + bmp->is_enable = is_enable; + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp); +} + +static int +vppcom_app_session_enable (void) +{ + vppcom_main_t *vcm = &vppcom_main; + int rv; + + if (vcm->app_state != STATE_APP_ENABLED) + { + vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ ); + rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] Session enable timed out, rv = %s (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + return rv; + } + } + return VPPCOM_OK; +} + +static void + vl_api_session_enable_disable_reply_t_handler + (vl_api_session_enable_disable_reply_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + + if (mp->retval) + { + clib_warning ("[%d] session_enable_disable failed: %U", vcm->my_pid, + format_api_error, ntohl (mp->retval)); + } + else + vcm->app_state = STATE_APP_ENABLED; +} + +static void +vppcom_app_send_attach (void) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_application_attach_t *bmp; + bmp = vl_msg_api_alloc (sizeof (*bmp)); + memset (bmp, 0, sizeof (*bmp)); + + bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_ATTACH); + bmp->client_index = vcm->my_client_index; + bmp->context = htonl (0xfeedface); + bmp->options[APP_OPTIONS_FLAGS] = + APP_OPTIONS_FLAGS_ACCEPT_REDIRECT | APP_OPTIONS_FLAGS_ADD_SEGMENT | + APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE | APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; + bmp->options[SESSION_OPTIONS_SEGMENT_SIZE] = vcm->cfg.segment_size; + bmp->options[SESSION_OPTIONS_ADD_SEGMENT_SIZE] = vcm->cfg.add_segment_size; + bmp->options[SESSION_OPTIONS_RX_FIFO_SIZE] = vcm->cfg.rx_fifo_size; + bmp->options[SESSION_OPTIONS_TX_FIFO_SIZE] = vcm->cfg.tx_fifo_size; + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp); +} + +static int +vppcom_app_attach (void) +{ + vppcom_main_t *vcm = &vppcom_main; + int rv; + + vppcom_app_send_attach (); + rv = vppcom_wait_for_app_state_change (STATE_APP_ATTACHED); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] application attach timed out, rv = %s (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + return rv; + } + return VPPCOM_OK; +} + +static void +vppcom_app_detach (void) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_application_detach_t *bmp; + bmp = vl_msg_api_alloc (sizeof (*bmp)); + memset (bmp, 0, sizeof (*bmp)); + + bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH); + bmp->client_index = vcm->my_client_index; + bmp->context = htonl (0xfeedface); + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp); +} + +static void +vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t * + mp) +{ + vppcom_main_t *vcm = &vppcom_main; + static svm_fifo_segment_create_args_t _a; + svm_fifo_segment_create_args_t *a = &_a; + int rv; + + memset (a, 0, sizeof (*a)); + if (mp->retval) + { + clib_warning ("[%d] attach failed: %U", vcm->my_pid, + format_api_error, ntohl (mp->retval)); + return; + } + + if (mp->segment_name_length == 0) + { + clib_warning ("[%d] segment_name_length zero", vcm->my_pid); + return; + } + + a->segment_name = (char *) mp->segment_name; + a->segment_size = mp->segment_size; + + ASSERT (mp->app_event_queue_address); + + /* Attach to the segment vpp created */ + rv = svm_fifo_segment_attach (a); + vec_reset_length (a->new_segment_indices); + if (PREDICT_FALSE (rv)) + { + clib_warning ("[%d] svm_fifo_segment_attach ('%s') failed", vcm->my_pid, + mp->segment_name); + return; + } + + vcm->app_event_queue = + uword_to_pointer (mp->app_event_queue_address, + unix_shared_memory_queue_t *); + + vcm->app_state = STATE_APP_ATTACHED; +} + +static void +vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t * + mp) +{ + vppcom_main_t *vcm = &vppcom_main; + + if (mp->retval) + clib_warning ("[%d] detach failed: %U", vcm->my_pid, format_api_error, + ntohl (mp->retval)); + + vcm->app_state = STATE_APP_ENABLED; +} + +static void +vl_api_disconnect_session_reply_t_handler (vl_api_disconnect_session_reply_t * + mp) +{ + vppcom_main_t *vcm = &vppcom_main; + uword *p; + + p = hash_get (vcm->session_index_by_vpp_handles, mp->handle); + if (p) + { + session_t *session = 0; + int rv; + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (p[0], &session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, p[0]); + } + hash_unset (vcm->session_index_by_vpp_handles, mp->handle); + session->state = STATE_DISCONNECT; + clib_spinlock_unlock (&vcm->sessions_lockp); + } + else + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] couldn't find session key %llx", vcm->my_pid, + mp->handle); + } + + if (mp->retval) + clib_warning ("[%d] disconnect_session failed: %U", vcm->my_pid, + format_api_error, ntohl (mp->retval)); +} + +static void +vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + static svm_fifo_segment_create_args_t _a; + svm_fifo_segment_create_args_t *a = &_a; + int rv; + + memset (a, 0, sizeof (*a)); + a->segment_name = (char *) mp->segment_name; + a->segment_size = mp->segment_size; + /* Attach to the segment vpp created */ + rv = svm_fifo_segment_attach (a); + vec_reset_length (a->new_segment_indices); + if (PREDICT_FALSE (rv)) + { + clib_warning ("[%d] svm_fifo_segment_attach ('%s') failed", + vcm->my_pid, mp->segment_name); + return; + } + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] mapped new segment '%s' size %d", vcm->my_pid, + mp->segment_name, mp->segment_size); +} + +static void +vl_api_disconnect_session_t_handler (vl_api_disconnect_session_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + vl_api_disconnect_session_reply_t *rmp; + uword *p; + int rv = 0; + + p = hash_get (vcm->session_index_by_vpp_handles, mp->handle); + if (p) + { + int rval; + clib_spinlock_lock (&vcm->sessions_lockp); + rval = vppcom_session_at_index (p[0], &session); + if (PREDICT_FALSE (rval)) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, p[0]); + } + else + pool_put (vcm->sessions, session); + clib_spinlock_unlock (&vcm->sessions_lockp); + hash_unset (vcm->session_index_by_vpp_handles, mp->handle); + } + else + { + clib_warning ("[%d] couldn't find session key %llx", vcm->my_pid, + mp->handle); + rv = -11; + } + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + + rmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION_REPLY); + rmp->retval = htonl (rv); + rmp->handle = mp->handle; + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp); +} + +static void +vl_api_reset_session_t_handler (vl_api_reset_session_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + vl_api_reset_session_reply_t *rmp; + uword *p; + int rv = 0; + + p = hash_get (vcm->session_index_by_vpp_handles, mp->handle); + if (p) + { + int rval; + clib_spinlock_lock (&vcm->sessions_lockp); + rval = vppcom_session_at_index (p[0], &session); + if (PREDICT_FALSE (rval)) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, p[0]); + } + else + pool_put (vcm->sessions, session); + clib_spinlock_unlock (&vcm->sessions_lockp); + hash_unset (vcm->session_index_by_vpp_handles, mp->handle); + } + else + { + clib_warning ("[%d] couldn't find session key %llx", vcm->my_pid, + mp->handle); + rv = -11; + } + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_RESET_SESSION_REPLY); + rmp->retval = htonl (rv); + rmp->handle = mp->handle; + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp); +} + +static void +vl_api_connect_session_reply_t_handler (vl_api_connect_session_reply_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session; + u32 session_index; + svm_fifo_t *rx_fifo, *tx_fifo; + u8 is_cut_thru = 0; + int rv; + + if (mp->retval) + { + clib_warning ("[%d] connect failed: %U", vcm->my_pid, format_api_error, + ntohl (mp->retval)); + return; + } + + session_index = mp->context; + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] session_index = %d 0x%08x", vcm->my_pid, + session_index, session_index); + + clib_spinlock_lock (&vcm->sessions_lockp); + if (pool_is_free_index (vcm->sessions, session_index)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid %d is closed!", + vcm->my_pid, session_index); + return; + } + + /* We've been redirected */ + if (mp->segment_name_length > 0) + { + static svm_fifo_segment_create_args_t _a; + svm_fifo_segment_create_args_t *a = &_a; + + is_cut_thru = 1; + memset (a, 0, sizeof (*a)); + a->segment_name = (char *) mp->segment_name; + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] cut-thru segment: %s", vcm->my_pid, + a->segment_name); + rv = svm_fifo_segment_attach (a); + vec_reset_length (a->new_segment_indices); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + clib_warning ("[%d] sm_fifo_segment_attach ('%s') failed", + vcm->my_pid, a->segment_name); + return; + } + } + + /* + * Setup session + */ + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] client sid %d", vcm->my_pid, session_index); + + session = pool_elt_at_index (vcm->sessions, session_index); + session->is_cut_thru = is_cut_thru; + session->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address, + unix_shared_memory_queue_t *); + + rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); + rx_fifo->client_session_index = session_index; + tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); + tx_fifo->client_session_index = session_index; + + session->server_rx_fifo = rx_fifo; + session->server_tx_fifo = tx_fifo; + session->vpp_session_handle = mp->handle; + session->state = STATE_CONNECT; + + /* Add it to lookup table */ + hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); +} + +static void +vppcom_send_connect_sock (session_t * session, u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_connect_sock_t *cmp; + + /* Assumes caller as acquired the spinlock: vcm->sessions_lockp */ + session->is_server = 0; + cmp = vl_msg_api_alloc (sizeof (*cmp)); + memset (cmp, 0, sizeof (*cmp)); + cmp->_vl_msg_id = ntohs (VL_API_CONNECT_SOCK); + cmp->client_index = vcm->my_client_index; + cmp->context = session_index; + + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] session_index = %d 0x%08x", + vcm->my_pid, session_index, session_index); + + cmp->vrf = session->vrf; + cmp->is_ip4 = session->peer_addr.is_ip4; + clib_memcpy (cmp->ip, &session->peer_addr.ip46, sizeof (cmp->ip)); + cmp->port = session->port; + cmp->proto = session->proto; + clib_memcpy (cmp->options, session->options, sizeof (cmp->options)); + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & cmp); +} + +static int +vppcom_send_disconnect (u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_disconnect_session_t *dmp; + session_t *session = 0; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return rv; + } + + dmp = vl_msg_api_alloc (sizeof (*dmp)); + memset (dmp, 0, sizeof (*dmp)); + dmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION); + dmp->client_index = vcm->my_client_index; + dmp->handle = session->vpp_session_handle; + clib_spinlock_unlock (&vcm->sessions_lockp); + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & dmp); + return VPPCOM_OK; +} + +static void +vl_api_bind_sock_reply_t_handler (vl_api_bind_sock_reply_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + int rv; + + if (mp->retval) + clib_warning ("[%d] bind failed: %U", vcm->my_pid, format_api_error, + ntohl (mp->retval)); + + ASSERT (vcm->bind_session_index != ~0); + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (vcm->bind_session_index, &session); + if (rv == VPPCOM_OK) + { + session->vpp_session_handle = mp->handle; + hash_set (vcm->session_index_by_vpp_handles, mp->handle, + vcm->bind_session_index); + session->state = mp->retval ? STATE_FAILED : STATE_LISTEN; + vcm->bind_session_index = ~0; + } + clib_spinlock_unlock (&vcm->sessions_lockp); +} + +static void +vl_api_unbind_sock_reply_t_handler (vl_api_unbind_sock_reply_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (vcm->bind_session_index, &session); + if (rv == VPPCOM_OK) + { + if ((VPPCOM_DEBUG > 1) && (mp->retval)) + clib_warning ("[%d] unbind failed: %U", vcm->my_pid, format_api_error, + ntohl (mp->retval)); + + vcm->bind_session_index = ~0; + session->state = STATE_START; + } + clib_spinlock_unlock (&vcm->sessions_lockp); +} + +u8 * +format_ip4_address (u8 * s, va_list * args) +{ + u8 *a = va_arg (*args, u8 *); + return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]); +} + +u8 * +format_ip6_address (u8 * s, va_list * args) +{ + ip6_address_t *a = va_arg (*args, ip6_address_t *); + u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon; + + i_max_n_zero = ARRAY_LEN (a->as_u16); + max_n_zeros = 0; + i_first_zero = i_max_n_zero; + n_zeros = 0; + for (i = 0; i < ARRAY_LEN (a->as_u16); i++) + { + u32 is_zero = a->as_u16[i] == 0; + if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16)) + { + i_first_zero = i; + n_zeros = 0; + } + n_zeros += is_zero; + if ((!is_zero && n_zeros > max_n_zeros) + || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros)) + { + i_max_n_zero = i_first_zero; + max_n_zeros = n_zeros; + i_first_zero = ARRAY_LEN (a->as_u16); + n_zeros = 0; + } + } + + last_double_colon = 0; + for (i = 0; i < ARRAY_LEN (a->as_u16); i++) + { + if (i == i_max_n_zero && max_n_zeros > 1) + { + s = format (s, "::"); + i += max_n_zeros - 1; + last_double_colon = 1; + } + else + { + s = format (s, "%s%x", + (last_double_colon || i == 0) ? "" : ":", + clib_net_to_host_u16 (a->as_u16[i])); + last_double_colon = 0; + } + } + + return s; +} + +/* Format an IP46 address. */ +u8 * +format_ip46_address (u8 * s, va_list * args) +{ + ip46_address_t *ip46 = va_arg (*args, ip46_address_t *); + ip46_type_t type = va_arg (*args, ip46_type_t); + int is_ip4 = 1; + + switch (type) + { + case IP46_TYPE_ANY: + is_ip4 = ip46_address_is_ip4 (ip46); + break; + case IP46_TYPE_IP4: + is_ip4 = 1; + break; + case IP46_TYPE_IP6: + is_ip4 = 0; + break; + } + + return is_ip4 ? + format (s, "%U", format_ip4_address, &ip46->ip4) : + format (s, "%U", format_ip6_address, &ip46->ip6); +} + +static void +vl_api_accept_session_t_handler (vl_api_accept_session_t * mp) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_accept_session_reply_t *rmp; + svm_fifo_t *rx_fifo, *tx_fifo; + session_t *session; + u32 session_index; + int rv = 0; + + if (!clib_fifo_free_elts (vcm->client_session_index_fifo)) + { + clib_warning ("[%d] client session queue is full!", vcm->my_pid); + rv = VNET_API_ERROR_QUEUE_FULL; + goto send_reply; + } + + if (VPPCOM_DEBUG > 1) + { + u8 *ip_str = format (0, "%U", format_ip46_address, &mp->ip, mp->is_ip4); + clib_warning ("[%d] accepted session from: %s:%d", vcm->my_pid, ip_str, + clib_net_to_host_u16 (mp->port)); + vec_free (ip_str); + } + + clib_spinlock_lock (&vcm->sessions_lockp); + /* Allocate local session and set it up */ + pool_get (vcm->sessions, session); + memset (session, 0, sizeof (*session)); + session_index = session - vcm->sessions; + + rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); + rx_fifo->client_session_index = session_index; + tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); + tx_fifo->client_session_index = session_index; + + session->server_rx_fifo = rx_fifo; + session->server_tx_fifo = tx_fifo; + session->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address, + unix_shared_memory_queue_t *); + session->state = STATE_ACCEPT; + session->is_cut_thru = 0; + session->is_server = 1; + session->port = mp->port; + session->peer_addr.is_ip4 = mp->is_ip4; + clib_memcpy (&session->peer_addr.ip46, mp->ip, + sizeof (session->peer_addr.ip46)); + + /* Add it to lookup table */ + hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index); + + clib_fifo_add1 (vcm->client_session_index_fifo, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + + /* + * Send accept reply to vpp + */ +send_reply: + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_ACCEPT_SESSION_REPLY); + rmp->retval = htonl (rv); + rmp->handle = mp->handle; + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp); +} + +/* + * Acting as server for redirected connect requests + */ +static void +vl_api_connect_sock_t_handler (vl_api_connect_sock_t * mp) +{ + static svm_fifo_segment_create_args_t _a; + svm_fifo_segment_create_args_t *a = &_a; + vppcom_main_t *vcm = &vppcom_main; + u32 session_index; + svm_fifo_segment_private_t *seg; + unix_shared_memory_queue_t *client_q; + vl_api_connect_session_reply_t *rmp; + session_t *session = 0; + int rv = 0; + svm_fifo_t *rx_fifo; + svm_fifo_t *tx_fifo; + unix_shared_memory_queue_t *event_q = 0; + + clib_spinlock_lock (&vcm->sessions_lockp); + if (!clib_fifo_free_elts (vcm->client_session_index_fifo)) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] client session queue is full!", vcm->my_pid); + rv = VNET_API_ERROR_QUEUE_FULL; + clib_spinlock_unlock (&vcm->sessions_lockp); + goto send_reply; + } + + /* Create the segment */ + memset (a, 0, sizeof (*a)); + a->segment_name = (char *) format ((u8 *) a->segment_name, "%d:segment%d%c", + vcm->my_pid, vcm->unique_segment_index++, + 0); + a->segment_size = vcm->cfg.segment_size; + a->preallocated_fifo_pairs = vcm->cfg.preallocated_fifo_pairs; + a->rx_fifo_size = vcm->cfg.rx_fifo_size; + a->tx_fifo_size = vcm->cfg.tx_fifo_size; + + rv = svm_fifo_segment_create (a); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] svm_fifo_segment_create ('%s') failed", + vcm->my_pid, a->segment_name); + vec_reset_length (a->new_segment_indices); + rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED; + goto send_reply; + } + + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] created segment '%s'", vcm->my_pid, a->segment_name); + + pool_get (vcm->sessions, session); + memset (session, 0, sizeof (*session)); + session_index = session - vcm->sessions; + + session->sm_seg_index = a->new_segment_indices[0]; + vec_reset_length (a->new_segment_indices); + + seg = svm_fifo_segment_get_segment (session->sm_seg_index); + rx_fifo = session->server_rx_fifo = + svm_fifo_segment_alloc_fifo (seg, vcm->cfg.rx_fifo_size, + FIFO_SEGMENT_RX_FREELIST); + if (PREDICT_FALSE (!session->server_rx_fifo)) + { + svm_fifo_segment_delete (seg); + clib_warning ("[%d] rx fifo alloc failed, size %ld (0x%lx)", + vcm->my_pid, vcm->cfg.rx_fifo_size, + vcm->cfg.rx_fifo_size); + rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED; + clib_spinlock_unlock (&vcm->sessions_lockp); + goto send_reply; + } + + tx_fifo = session->server_tx_fifo = + svm_fifo_segment_alloc_fifo (seg, vcm->cfg.tx_fifo_size, + FIFO_SEGMENT_TX_FREELIST); + if (PREDICT_FALSE (!session->server_tx_fifo)) + { + svm_fifo_segment_delete (seg); + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] tx fifo alloc failed, size %ld (0x%lx)", + vcm->my_pid, vcm->cfg.tx_fifo_size, + vcm->cfg.tx_fifo_size); + rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED; + clib_spinlock_unlock (&vcm->sessions_lockp); + goto send_reply; + } + + session->server_rx_fifo->master_session_index = session_index; + session->server_tx_fifo->master_session_index = session_index; + session->client_queue_address = mp->client_queue_address; + session->is_cut_thru = 1; + session->is_server = 1; + session->port = mp->port; + session->peer_addr.is_ip4 = mp->is_ip4; + clib_memcpy (&session->peer_addr.ip46, mp->ip, + sizeof (session->peer_addr.ip46)); + { + void *oldheap; + ssvm_shared_header_t *sh = seg->ssvm.sh; + + ssvm_lock_non_recursive (sh, 1); + oldheap = ssvm_push_heap (sh); + event_q = session->vpp_event_queue = + unix_shared_memory_queue_init (vcm->cfg.event_queue_size, + sizeof (session_fifo_event_t), + vcm->my_pid, 0 /* signal not sent */ ); + ssvm_pop_heap (oldheap); + ssvm_unlock_non_recursive (sh); + } + + session->state = STATE_ACCEPT; + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] Connected cut-thru to client: sid %d", + vcm->my_pid, session_index); + clib_fifo_add1 (vcm->client_session_index_fifo, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + +send_reply: + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + + rmp->_vl_msg_id = ntohs (VL_API_CONNECT_SESSION_REPLY); + rmp->context = mp->context; + rmp->retval = htonl (rv); + rmp->segment_name_length = vec_len (a->segment_name); + clib_memcpy (rmp->segment_name, a->segment_name, vec_len (a->segment_name)); + vec_reset_length (a->segment_name); + + if (event_q) + { + rmp->vpp_event_queue_address = pointer_to_uword (event_q); + rmp->server_rx_fifo = pointer_to_uword (rx_fifo); + rmp->server_tx_fifo = pointer_to_uword (tx_fifo); + } + client_q = + uword_to_pointer (mp->client_queue_address, unix_shared_memory_queue_t *); + + ASSERT (client_q); + vl_msg_api_send_shmem (client_q, (u8 *) & rmp); +} + +static void +vppcom_send_bind_sock (session_t * session) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_bind_sock_t *bmp; + + /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ + session->is_server = 1; + bmp = vl_msg_api_alloc (sizeof (*bmp)); + memset (bmp, 0, sizeof (*bmp)); + + bmp->_vl_msg_id = ntohs (VL_API_BIND_SOCK); + bmp->client_index = vcm->my_client_index; + bmp->context = htonl (0xfeedface); + bmp->vrf = session->vrf; + bmp->is_ip4 = session->lcl_addr.is_ip4; + clib_memcpy (bmp->ip, &session->lcl_addr.ip46, sizeof (bmp->ip)); + bmp->port = session->port; + bmp->proto = session->proto; + clib_memcpy (bmp->options, session->options, sizeof (bmp->options)); + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp); +} + +static void +vppcom_send_unbind_sock (u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + vl_api_unbind_sock_t *ump; + session_t *session = 0; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return; + } + + ump = vl_msg_api_alloc (sizeof (*ump)); + memset (ump, 0, sizeof (*ump)); + + ump->_vl_msg_id = ntohs (VL_API_UNBIND_SOCK); + ump->client_index = vcm->my_client_index; + ump->handle = session->vpp_session_handle; + clib_spinlock_unlock (&vcm->sessions_lockp); + vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & ump); +} + +static int +vppcom_session_unbind_cut_thru (session_t * session) +{ + svm_fifo_segment_main_t *sm = &svm_fifo_segment_main; + svm_fifo_segment_private_t *seg; + int rv = VPPCOM_OK; + + seg = vec_elt_at_index (sm->segments, session->sm_seg_index); + svm_fifo_segment_free_fifo (seg, session->server_rx_fifo, + FIFO_SEGMENT_RX_FREELIST); + svm_fifo_segment_free_fifo (seg, session->server_tx_fifo, + FIFO_SEGMENT_TX_FREELIST); + svm_fifo_segment_delete (seg); + + return rv; +} + +static int +vppcom_session_unbind (u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + if (PREDICT_FALSE (pool_is_free_index (vcm->sessions, session_index))) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + clib_spinlock_unlock (&vcm->sessions_lockp); + + vcm->bind_session_index = session_index; + vppcom_send_unbind_sock (session_index); + rv = vppcom_wait_for_session_state_change (session_index, STATE_START, + vcm->cfg.session_timeout); + if (PREDICT_FALSE (rv)) + { + vcm->bind_session_index = ~0; + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] server unbind timed out, rv = %s (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + return rv; + } + return VPPCOM_OK; +} + +static int +vppcom_session_disconnect (u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + int rv; + + rv = vppcom_send_disconnect (session_index); + if (PREDICT_FALSE (rv)) + return rv; + + rv = vppcom_wait_for_session_state_change (session_index, STATE_DISCONNECT, + vcm->cfg.session_timeout); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] client disconnect timed out, rv = %s (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + return rv; + } + return VPPCOM_OK; +} + +#define foreach_sock_msg \ +_(SESSION_ENABLE_DISABLE_REPLY, session_enable_disable_reply) \ +_(BIND_SOCK_REPLY, bind_sock_reply) \ +_(UNBIND_SOCK_REPLY, unbind_sock_reply) \ +_(ACCEPT_SESSION, accept_session) \ +_(CONNECT_SOCK, connect_sock) \ +_(CONNECT_SESSION_REPLY, connect_session_reply) \ +_(DISCONNECT_SESSION, disconnect_session) \ +_(DISCONNECT_SESSION_REPLY, disconnect_session_reply) \ +_(RESET_SESSION, reset_session) \ +_(APPLICATION_ATTACH_REPLY, application_attach_reply) \ +_(APPLICATION_DETACH_REPLY, application_detach_reply) \ +_(MAP_ANOTHER_SEGMENT, map_another_segment) + +static void +vppcom_api_hookup (void) +{ +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N, #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_sock_msg; +#undef _ +} + +static void +vppcom_cfg_init (vppcom_cfg_t * vcl_cfg) +{ + ASSERT (vcl_cfg); + + vcl_cfg->heapsize = (256ULL << 20); + vcl_cfg->segment_baseva = 0x200000000ULL; + vcl_cfg->segment_size = (256 << 20); + vcl_cfg->add_segment_size = (128 << 20); + vcl_cfg->preallocated_fifo_pairs = 8; + vcl_cfg->rx_fifo_size = (1 << 20); + vcl_cfg->tx_fifo_size = (1 << 20); + vcl_cfg->event_queue_size = 2048; + vcl_cfg->listen_queue_size = CLIB_CACHE_LINE_BYTES / sizeof (u32); + vcl_cfg->app_timeout = 10 * 60.0; + vcl_cfg->session_timeout = 10 * 60.0; + vcl_cfg->accept_timeout = 60.0; +} + +static void +vppcom_cfg_heapsize (char *conf_fname) +{ + vppcom_main_t *vcm = &vppcom_main; + vppcom_cfg_t *vcl_cfg = &vcm->cfg; + FILE *fp; + char inbuf[4096]; + int argc = 1; + char **argv = NULL; + char *arg = NULL; + char *p; + int i; + u8 *sizep; + u32 size; + + fp = fopen (conf_fname, "r"); + if (fp == NULL) + { + if (VPPCOM_DEBUG > 0) + fprintf (stderr, "open configuration file '%s' failed\n", conf_fname); + goto defaulted; + } + argv = calloc (1, sizeof (char *)); + if (argv == NULL) + goto defaulted; + + while (1) + { + if (fgets (inbuf, 4096, fp) == 0) + break; + p = strtok (inbuf, " \t\n"); + while (p != NULL) + { + if (*p == '#') + break; + argc++; + char **tmp = realloc (argv, argc * sizeof (char *)); + if (tmp == NULL) + goto defaulted; + argv = tmp; + arg = strndup (p, 1024); + if (arg == NULL) + goto defaulted; + argv[argc - 1] = arg; + p = strtok (NULL, " \t\n"); + } + } + + fclose (fp); + fp = NULL; + + char **tmp = realloc (argv, (argc + 1) * sizeof (char *)); + if (tmp == NULL) + goto defaulted; + argv = tmp; + argv[argc] = NULL; + + /* + * Look for and parse the "heapsize" config parameter. + * Manual since none of the clib infra has been bootstrapped yet. + * + * Format: heapsize <nn>[mM][gG] + */ + + for (i = 1; i < (argc - 1); i++) + { + if (!strncmp (argv[i], "heapsize", 8)) + { + sizep = (u8 *) argv[i + 1]; + size = 0; + while (*sizep >= '0' && *sizep <= '9') + { + size *= 10; + size += *sizep++ - '0'; + } + if (size == 0) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] parse error '%s %s', " + "using default heapsize %lld (0x%llx)", + vcm->my_pid, argv[i], argv[i + 1], + vcl_cfg->heapsize, vcl_cfg->heapsize); + goto defaulted; + } + + if (*sizep == 'g' || *sizep == 'G') + vcl_cfg->heapsize = size << 30; + else if (*sizep == 'm' || *sizep == 'M') + vcl_cfg->heapsize = size << 20; + else + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] parse error '%s %s', " + "using default heapsize %lld (0x%llx)", + vcm->my_pid, argv[i], argv[i + 1], + vcl_cfg->heapsize, vcl_cfg->heapsize); + goto defaulted; + } + } + } + +defaulted: + if (fp != NULL) + fclose (fp); + if (argv != NULL) + free (argv); + if (!clib_mem_init (0, vcl_cfg->heapsize)) + clib_warning ("[%d] vppcom heap allocation failure!", vcm->my_pid); + else if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] allocated vppcom heapsize %lld (0x%llx)", + vcm->my_pid, vcl_cfg->heapsize, vcl_cfg->heapsize); +} + +static void +vppcom_cfg_read (char *conf_fname) +{ + vppcom_main_t *vcm = &vppcom_main; + vppcom_cfg_t *vcl_cfg = &vcm->cfg; + int fd; + unformat_input_t _input, *input = &_input; + unformat_input_t _line_input, *line_input = &_line_input; + u8 vc_cfg_input = 0; + u8 *chroot_path; + struct stat s; + u32 uid, gid; + + fd = open (conf_fname, O_RDONLY); + if (fd < 0) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] open configuration file '%s' failed!", + vcm->my_pid, conf_fname); + goto file_done; + } + + if (fstat (fd, &s) < 0) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] failed to stat `%s'", vcm->my_pid, conf_fname); + goto file_done; + } + + if (!(S_ISREG (s.st_mode) || S_ISLNK (s.st_mode))) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] not a regular file `%s'", vcm->my_pid, + conf_fname); + goto file_done; + } + + unformat_init_clib_file (input, fd); + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + (void) unformat_user (input, unformat_line_input, line_input); + unformat_skip_white_space (line_input); + + if (unformat (line_input, "vppcom {")) + { + vc_cfg_input = 1; + continue; + } + + if (vc_cfg_input) + { + if (unformat (line_input, "heapsize %s", &chroot_path)) + { + vec_terminate_c_string (chroot_path); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured heapsize %s, " + "actual heapsize %lld (0x%llx)", + vcm->my_pid, chroot_path, vcl_cfg->heapsize, + vcl_cfg->heapsize); + vec_free (chroot_path); + } + else if (unformat (line_input, "api-prefix %s", &chroot_path)) + { + vec_terminate_c_string (chroot_path); + vl_set_memory_root_path ((char *) chroot_path); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured api-prefix %s", + vcm->my_pid, chroot_path); + chroot_path = 0; /* Don't vec_free() it! */ + } + else if (unformat (line_input, "uid %d", &uid)) + { + vl_set_memory_uid (uid); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured uid %d", vcm->my_pid, uid); + } + else if (unformat (line_input, "gid %d", &gid)) + { + vl_set_memory_gid (gid); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured gid %d", vcm->my_pid, gid); + } + else if (unformat (line_input, "segment-baseva 0x%llx", + &vcl_cfg->segment_baseva)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured segment_baseva 0x%llx", + vcm->my_pid, vcl_cfg->segment_baseva); + } + else if (unformat (line_input, "segment-size 0x%lx", + &vcl_cfg->segment_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured segment_size 0x%lx (%ld)", + vcm->my_pid, vcl_cfg->segment_size, + vcl_cfg->segment_size); + } + else if (unformat (line_input, "segment-size %ld", + &vcl_cfg->segment_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured segment_size %ld (0x%lx)", + vcm->my_pid, vcl_cfg->segment_size, + vcl_cfg->segment_size); + } + else if (unformat (line_input, "add-segment-size 0x%lx", + &vcl_cfg->add_segment_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning + ("[%d] configured add_segment_size 0x%lx (%ld)", + vcm->my_pid, vcl_cfg->add_segment_size, + vcl_cfg->add_segment_size); + } + else if (unformat (line_input, "add-segment-size %ld", + &vcl_cfg->add_segment_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning + ("[%d] configured add_segment_size %ld (0x%lx)", + vcm->my_pid, vcl_cfg->add_segment_size, + vcl_cfg->add_segment_size); + } + else if (unformat (line_input, "preallocated-fifo-pairs %d", + &vcl_cfg->preallocated_fifo_pairs)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured preallocated_fifo_pairs " + "%d (0x%x)", vcm->my_pid, + vcl_cfg->preallocated_fifo_pairs, + vcl_cfg->preallocated_fifo_pairs); + } + else if (unformat (line_input, "rx-fifo-size 0x%lx", + &vcl_cfg->rx_fifo_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured rx_fifo_size 0x%lx (%ld)", + vcm->my_pid, vcl_cfg->rx_fifo_size, + vcl_cfg->rx_fifo_size); + } + else if (unformat (line_input, "rx-fifo-size %ld", + &vcl_cfg->rx_fifo_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured rx_fifo_size %ld (0x%lx)", + vcm->my_pid, vcl_cfg->rx_fifo_size, + vcl_cfg->rx_fifo_size); + } + else if (unformat (line_input, "tx-fifo-size 0x%lx", + &vcl_cfg->tx_fifo_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured tx_fifo_size 0x%lx (%ld)", + vcm->my_pid, vcl_cfg->tx_fifo_size, + vcl_cfg->tx_fifo_size); + } + else if (unformat (line_input, "tx-fifo-size %ld", + &vcl_cfg->tx_fifo_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured tx_fifo_size %ld (0x%lx)", + vcm->my_pid, vcl_cfg->tx_fifo_size, + vcl_cfg->tx_fifo_size); + } + else if (unformat (line_input, "event-queue-size 0x%lx", + &vcl_cfg->event_queue_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured event_queue_size 0x%lx (%ld)", + vcm->my_pid, vcl_cfg->event_queue_size, + vcl_cfg->event_queue_size); + } + else if (unformat (line_input, "event-queue-size %ld", + &vcl_cfg->event_queue_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured event_queue_size %ld (0x%lx)", + vcm->my_pid, vcl_cfg->event_queue_size, + vcl_cfg->event_queue_size); + } + else if (unformat (line_input, "listen-queue-size 0x%lx", + &vcl_cfg->listen_queue_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured listen_queue_size 0x%lx (%ld)", + vcm->my_pid, vcl_cfg->listen_queue_size, + vcl_cfg->listen_queue_size); + } + else if (unformat (line_input, "listen-queue-size %ld", + &vcl_cfg->listen_queue_size)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured listen_queue_size %ld (0x%lx)", + vcm->my_pid, vcl_cfg->listen_queue_size, + vcl_cfg->listen_queue_size); + } + else if (unformat (line_input, "app-timeout %f", + &vcl_cfg->app_timeout)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured app_timeout %f", + vcm->my_pid, vcl_cfg->app_timeout); + } + else if (unformat (line_input, "session-timeout %f", + &vcl_cfg->session_timeout)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured session_timeout %f", + vcm->my_pid, vcl_cfg->session_timeout); + } + else if (unformat (line_input, "accept-timeout %f", + &vcl_cfg->accept_timeout)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] configured accept_timeout %f", + vcm->my_pid, vcl_cfg->accept_timeout); + } + else if (unformat (line_input, "}")) + { + vc_cfg_input = 0; + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] completed parsing vppcom config!", + vcm->my_pid); + goto input_done; + } + else + { + if (line_input->buffer[line_input->index] != '#') + { + clib_warning ("[%d] Unknown vppcom config option: '%s'", + vcm->my_pid, (char *) + &line_input->buffer[line_input->index]); + } + } + } + } + +input_done: + unformat_free (input); + +file_done: + if (fd >= 0) + close (fd); +} + +/* + * VPPCOM Public API functions + */ +int +vppcom_app_create (char *app_name) +{ + vppcom_main_t *vcm = &vppcom_main; + vppcom_cfg_t *vcl_cfg = &vcm->cfg; + u8 *heap; + mheap_t *h; + int rv; + + if (!vcm->init) + { + char *conf_fname; + + vcm->init = 1; + vcm->my_pid = getpid (); + clib_fifo_validate (vcm->client_session_index_fifo, + vcm->cfg.listen_queue_size); + vppcom_cfg_init (vcl_cfg); + conf_fname = getenv (VPPCOM_CONF_ENV); + if (!conf_fname) + { + conf_fname = VPPCOM_CONF_DEFAULT; + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] getenv '%s' failed!", vcm->my_pid, + VPPCOM_CONF_ENV); + } + vppcom_cfg_heapsize (conf_fname); + vppcom_cfg_read (conf_fname); + vcm->bind_session_index = ~0; + vcm->main_cpu = os_get_thread_index (); + heap = clib_mem_get_per_cpu_heap (); + h = mheap_header (heap); + + /* make the main heap thread-safe */ + h->flags |= MHEAP_FLAG_THREAD_SAFE; + + vcm->session_index_by_vpp_handles = hash_create (0, sizeof (uword)); + + clib_time_init (&vcm->clib_time); + vppcom_init_error_string_table (); + svm_fifo_segment_init (vcl_cfg->segment_baseva, + 20 /* timeout in secs */ ); + clib_spinlock_init (&vcm->sessions_lockp); + vppcom_api_hookup (); + } + + if (vcm->my_client_index == ~0) + { + vcm->app_state = STATE_APP_START; + rv = vppcom_connect_to_vpp (app_name); + if (rv) + { + clib_warning ("[%d] couldn't connect to VPP.", vcm->my_pid); + return rv; + } + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sending session enable", vcm->my_pid); + + rv = vppcom_app_session_enable (); + if (rv) + { + clib_warning ("[%d] vppcom_app_session_enable() failed!", + vcm->my_pid); + return rv; + } + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sending app attach", vcm->my_pid); + + rv = vppcom_app_attach (); + if (rv) + { + clib_warning ("[%d] vppcom_app_attach() failed!", vcm->my_pid); + return rv; + } + } + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] app_name '%s', my_client_index %d (0x%x)", + vcm->my_pid, app_name, vcm->my_client_index, + vcm->my_client_index); + + return VPPCOM_OK; +} + +void +vppcom_app_destroy (void) +{ + vppcom_main_t *vcm = &vppcom_main; + int rv; + + if (vcm->my_client_index == ~0) + return; + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] detaching from VPP, my_client_index %d (0x%x)", + vcm->my_pid, vcm->my_client_index, vcm->my_client_index); + + vppcom_app_detach (); + rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] application detach timed out, rv = %s (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + } + vl_client_disconnect_from_vlib (); + vcm->my_client_index = ~0; + vcm->app_state = STATE_APP_START; +} + +int +vppcom_session_create (u32 vrf, u8 proto, u8 is_nonblocking) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session; + u32 session_index; + + clib_spinlock_lock (&vcm->sessions_lockp); + pool_get (vcm->sessions, session); + memset (session, 0, sizeof (*session)); + session_index = session - vcm->sessions; + + session->vrf = vrf; + session->proto = proto; + session->state = STATE_START; + session->is_nonblocking = is_nonblocking ? 1 : 0; + clib_spinlock_unlock (&vcm->sessions_lockp); + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid %d", vcm->my_pid, session_index); + + return (int) session_index; +} + +int +vppcom_session_close (uint32_t session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + goto done; + } + clib_spinlock_unlock (&vcm->sessions_lockp); + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid %d", vcm->my_pid, session_index); + + if (session->is_vep) + { + u32 next_sid; + for (next_sid = session->vep.next_sid; next_sid != ~0; + next_sid = session->vep.next_sid) + { + rv = vppcom_epoll_ctl (session_index, EPOLL_CTL_DEL, next_sid, 0); + if ((VPPCOM_DEBUG > 0) && (rv < 0)) + clib_warning ("[%d] EPOLL_CTL_DEL vep_idx %u, sid %u failed, " + "rv = %s (%d)", session_index, next_sid, + vcm->my_pid, session_index, + vppcom_retval_str (rv), rv); + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning + ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + goto done; + } + clib_spinlock_unlock (&vcm->sessions_lockp); + } + } + else + { + if (session->is_vep_session) + { + u32 vep_idx = session->vep.vep_idx; + rv = vppcom_epoll_ctl (vep_idx, EPOLL_CTL_DEL, session_index, 0); + if ((VPPCOM_DEBUG > 0) && (rv < 0)) + clib_warning ("[%d] EPOLL_CTL_DEL vep_idx %u, sid %u failed, " + "rv = %s (%d)", vep_idx, session_index, + vcm->my_pid, session_index, + vppcom_retval_str (rv), rv); + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning + ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + goto done; + } + clib_spinlock_unlock (&vcm->sessions_lockp); + } + + if (session->is_cut_thru && session->is_server && + (session->state == STATE_ACCEPT)) + { + rv = vppcom_session_unbind_cut_thru (session); + if ((VPPCOM_DEBUG > 0) && (rv < 0)) + clib_warning ("[%d] unbind cut-thru (session %d) failed, " + "rv = %s (%d)", + vcm->my_pid, session_index, + vppcom_retval_str (rv), rv); + } + else if (session->is_server && session->is_listen) + { + rv = vppcom_session_unbind (session_index); + if ((VPPCOM_DEBUG > 0) && (rv < 0)) + clib_warning ("[%d] unbind (session %d) failed, rv = %s (%d)", + vcm->my_pid, session_index, + vppcom_retval_str (rv), rv); + } + else if (session->state == STATE_CONNECT) + { + rv = vppcom_session_disconnect (session_index); + if ((VPPCOM_DEBUG > 0) && (rv < 0)) + clib_warning ("[%d] disconnect (session %d) failed, rv = %s (%d)", + vcm->my_pid, session_index, + vppcom_retval_str (rv), rv); + } + } + pool_put_index (vcm->sessions, session_index); +done: + return rv; +} + +int +vppcom_session_bind (uint32_t session_index, vppcom_endpt_t * ep) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + int rv; + + if (!ep || !ep->ip) + return VPPCOM_EINVAL; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return rv; + } + + if (session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid %d", vcm->my_pid, session_index); + + session->vrf = ep->vrf; + session->lcl_addr.is_ip4 = ep->is_ip4; + session->lcl_addr.ip46 = to_ip46 (!ep->is_ip4, ep->ip); + session->port = ep->port; + + clib_spinlock_unlock (&vcm->sessions_lockp); + return VPPCOM_OK; +} + +int +vppcom_session_listen (uint32_t listen_session_index, uint32_t q_len) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *listen_session = 0; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (listen_session_index, &listen_session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, listen_session_index); + return rv; + } + + if (listen_session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, listen_session_index); + return VPPCOM_EBADFD; + } + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid %d", vcm->my_pid, listen_session_index); + + ASSERT (vcm->bind_session_index == ~0); + vcm->bind_session_index = listen_session_index; + vppcom_send_bind_sock (listen_session); + clib_spinlock_unlock (&vcm->sessions_lockp); + rv = + vppcom_wait_for_session_state_change (listen_session_index, STATE_LISTEN, + vcm->cfg.session_timeout); + if (PREDICT_FALSE (rv)) + { + vcm->bind_session_index = ~0; + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] server listen timed out, rv = %d (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + return rv; + } + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (listen_session_index, &listen_session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, listen_session_index); + return rv; + } + listen_session->is_listen = 1; + clib_fifo_validate (vcm->client_session_index_fifo, q_len); + clib_spinlock_unlock (&vcm->sessions_lockp); + + return VPPCOM_OK; +} + +int +vppcom_session_accept (uint32_t listen_session_index, vppcom_endpt_t * ep, + double wait_for_time) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *listen_session = 0; + session_t *client_session = 0; + u32 client_session_index; + int rv; + f64 wait_for; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (listen_session_index, &listen_session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, listen_session_index); + return rv; + } + + if (listen_session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, listen_session_index); + return VPPCOM_EBADFD; + } + + if (listen_session->state != STATE_LISTEN) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] session not in listen state, state = %s", + vcm->my_pid, + vppcom_session_state_str (listen_session->state)); + return VPPCOM_EBADFD; + } + wait_for = listen_session->is_nonblocking ? 0 : + (wait_for_time < 0) ? vcm->cfg.accept_timeout : wait_for_time; + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid %d: %s (%d)", vcm->my_pid, + listen_session_index, + vppcom_session_state_str (listen_session->state), + listen_session->state); + clib_spinlock_unlock (&vcm->sessions_lockp); + + while (1) + { + rv = vppcom_wait_for_client_session_index (wait_for); + if (rv) + { + if ((VPPCOM_DEBUG > 0)) + clib_warning ("[%d] sid %d, accept timed out, rv = %s (%d)", + vcm->my_pid, listen_session_index, + vppcom_retval_str (rv), rv); + if ((wait_for == 0) || (wait_for_time > 0)) + return rv; + } + else + break; + } + + clib_spinlock_lock (&vcm->sessions_lockp); + clib_fifo_sub1 (vcm->client_session_index_fifo, client_session_index); + rv = vppcom_session_at_index (client_session_index, &client_session); + ASSERT (rv == VPPCOM_OK); + ASSERT (client_session->peer_addr.is_ip4 == + listen_session->lcl_addr.is_ip4); + + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] Got a request: client sid %d", vcm->my_pid, + client_session_index); + + ep->vrf = client_session->vrf; + ep->is_cut_thru = client_session->is_cut_thru; + ep->is_ip4 = client_session->peer_addr.is_ip4; + ep->port = client_session->port; + if (client_session->peer_addr.is_ip4) + clib_memcpy (ep->ip, &client_session->peer_addr.ip46.ip4, + sizeof (ip4_address_t)); + else + clib_memcpy (ep->ip, &client_session->peer_addr.ip46.ip6, + sizeof (ip6_address_t)); + clib_spinlock_unlock (&vcm->sessions_lockp); + return (int) client_session_index; +} + +int +vppcom_session_connect (uint32_t session_index, vppcom_endpt_t * server_ep) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + int rv; + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return rv; + } + + if (session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + + if (session->state == STATE_CONNECT) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] session, sid (%u) already connected!", + vcm->my_pid, session_index); + return VPPCOM_OK; + } + + session->vrf = server_ep->vrf; + session->peer_addr.is_ip4 = server_ep->is_ip4; + session->peer_addr.ip46 = to_ip46 (!server_ep->is_ip4, server_ep->ip); + session->port = server_ep->port; + + if (VPPCOM_DEBUG > 0) + { + u8 *ip_str = format (0, "%U", format_ip46_address, + &session->peer_addr.ip46, + session->peer_addr.is_ip4); + clib_warning ("[%d] connect sid %d to %s server port %d proto %s", + vcm->my_pid, session_index, ip_str, + clib_net_to_host_u16 (session->port), + session->proto ? "UDP" : "TCP"); + vec_free (ip_str); + } + + vppcom_send_connect_sock (session, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT, + vcm->cfg.session_timeout); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] connect timed out, rv = %s (%d)", + vcm->my_pid, vppcom_retval_str (rv), rv); + return rv; + } + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid %d connected!", vcm->my_pid, session_index); + + return VPPCOM_OK; +} + +int +vppcom_session_read (uint32_t session_index, void *buf, int n) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + svm_fifo_t *rx_fifo; + int n_read = 0; + int rv; + char *fifo_str; + u32 poll_et; + + ASSERT (buf); + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return rv; + } + + if (session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + + if (session->state == STATE_DISCONNECT) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid (%u) has been closed by remote peer!", + vcm->my_pid, session_index); + return VPPCOM_ECONNRESET; + } + + rx_fifo = ((!session->is_cut_thru || session->is_server) ? + session->server_rx_fifo : session->server_tx_fifo); + fifo_str = ((!session->is_cut_thru || session->is_server) ? + "server_rx_fifo" : "server_tx_fifo"); + poll_et = EPOLLET & session->vep.ev.events; + clib_spinlock_unlock (&vcm->sessions_lockp); + + do + { + n_read = svm_fifo_dequeue_nowait (rx_fifo, n, buf); + } + while (!session->is_nonblocking && (n_read <= 0)); + + if (poll_et && (n_read <= 0)) + { + clib_spinlock_lock (&vcm->sessions_lockp); + session->vep.et_mask |= EPOLLIN; + clib_spinlock_unlock (&vcm->sessions_lockp); + } + + if ((VPPCOM_DEBUG > 2) && (n_read > 0)) + clib_warning ("[%d] sid %d, read %d bytes from %s (%p)", vcm->my_pid, + session_index, n_read, fifo_str, rx_fifo); + + return (n_read <= 0) ? VPPCOM_EAGAIN : n_read; +} + +static inline int +vppcom_session_read_ready (session_t * session, u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + svm_fifo_t *rx_fifo; + int ready = 0; + + /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ + if (session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + + if (session->state == STATE_DISCONNECT) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid (%u) has been closed by remote peer!", + vcm->my_pid, session_index); + return VPPCOM_ECONNRESET; + } + + if (session->is_listen) + ready = clib_fifo_elts (vcm->client_session_index_fifo); + else + { + rx_fifo = ((!session->is_cut_thru || session->is_server) ? + session->server_rx_fifo : session->server_tx_fifo); + + ready = svm_fifo_max_dequeue (rx_fifo); + } + + if (VPPCOM_DEBUG > 3) + clib_warning ("[%d] sid %d, peek %s (%p), ready = %d", vcm->my_pid, + session_index, + session->is_server ? "server_rx_fifo" : "server_tx_fifo", + rx_fifo, ready); + if ((session->vep.ev.events & EPOLLET) && (ready == 0)) + session->vep.et_mask |= EPOLLIN; + + return ready; +} + +int +vppcom_session_write (uint32_t session_index, void *buf, int n) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session = 0; + svm_fifo_t *tx_fifo; + unix_shared_memory_queue_t *q; + session_fifo_event_t evt; + int rv, n_write; + char *fifo_str; + u32 poll_et; + + ASSERT (buf); + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return rv; + } + + if (session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + + if (session->state == STATE_DISCONNECT) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid (%u) has been closed by remote peer!", + vcm->my_pid, session_index); + return VPPCOM_ECONNRESET; + } + + tx_fifo = ((!session->is_cut_thru || session->is_server) ? + session->server_tx_fifo : session->server_rx_fifo); + fifo_str = ((!session->is_cut_thru || session->is_server) ? + "server_tx_fifo" : "server_rx_fifo"); + q = session->vpp_event_queue; + poll_et = EPOLLET & session->vep.ev.events; + clib_spinlock_unlock (&vcm->sessions_lockp); + + do + { + n_write = svm_fifo_enqueue_nowait (tx_fifo, n, buf); + } + while (!session->is_nonblocking && (n_write <= 0)); + + /* If event wasn't set, add one */ + if (!session->is_cut_thru && (n_write > 0) && svm_fifo_set_event (tx_fifo)) + { + int rval; + + /* Fabricate TX event, send to vpp */ + evt.fifo = tx_fifo; + evt.event_type = FIFO_EVENT_APP_TX; + + rval = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rval)) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] invalid session, sid (%u) has been closed!", + vcm->my_pid, session_index); + return rval; + } + ASSERT (q); + unix_shared_memory_queue_add (q, (u8 *) & evt, + 0 /* do wait for mutex */ ); + } + + if (poll_et && (n_write <= 0)) + { + clib_spinlock_lock (&vcm->sessions_lockp); + session->vep.et_mask |= EPOLLOUT; + clib_spinlock_unlock (&vcm->sessions_lockp); + } + + if (VPPCOM_DEBUG > 2) + { + if (n_write == -2) + clib_warning ("[%d] sid %d, FIFO-FULL %s (%p)", vcm->my_pid, + session_index, fifo_str, tx_fifo); + else + clib_warning ("[%d] sid %d, wrote %d bytes to %s (%p)", vcm->my_pid, + session_index, n_write, fifo_str, tx_fifo); + } + return (n_write < 0) ? VPPCOM_EAGAIN : n_write; +} + +static inline int +vppcom_session_write_ready (session_t * session, u32 session_index) +{ + vppcom_main_t *vcm = &vppcom_main; + svm_fifo_t *tx_fifo; + char *fifo_str; + int ready; + + /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ + if (session->is_vep) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] invalid session, sid (%u) is an epoll session!", + vcm->my_pid, session_index); + return VPPCOM_EBADFD; + } + + if (session->state == STATE_DISCONNECT) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] sid (%u) has been closed by remote peer!", + vcm->my_pid, session_index); + return VPPCOM_ECONNRESET; + } + + tx_fifo = ((!session->is_cut_thru || session->is_server) ? + session->server_tx_fifo : session->server_rx_fifo); + fifo_str = ((!session->is_cut_thru || session->is_server) ? + "server_tx_fifo" : "server_rx_fifo"); + + ready = svm_fifo_max_enqueue (tx_fifo); + + if (VPPCOM_DEBUG > 3) + clib_warning ("[%d] sid %d, peek %s (%p), ready = %d", vcm->my_pid, + session_index, fifo_str, tx_fifo, ready); + if ((session->vep.ev.events & EPOLLET) && (ready == 0)) + session->vep.et_mask |= EPOLLOUT; + + return ready; +} + +int +vppcom_select (unsigned long n_bits, unsigned long *read_map, + unsigned long *write_map, unsigned long *except_map, + double time_to_wait) +{ + vppcom_main_t *vcm = &vppcom_main; + u32 session_index; + session_t *session = 0; + int rv, bits_set = 0; + f64 timeout = clib_time_now (&vcm->clib_time) + time_to_wait; + u32 minbits = clib_max (n_bits, BITS (uword)); + + ASSERT (sizeof (clib_bitmap_t) == sizeof (long int)); + + if (n_bits && read_map) + { + clib_bitmap_validate (vcm->rd_bitmap, minbits); + clib_memcpy (vcm->rd_bitmap, read_map, vec_len (vcm->rd_bitmap)); + memset (read_map, 0, vec_len (vcm->rd_bitmap)); + } + if (n_bits && write_map) + { + clib_bitmap_validate (vcm->wr_bitmap, minbits); + clib_memcpy (vcm->wr_bitmap, write_map, vec_len (vcm->wr_bitmap)); + memset (write_map, 0, vec_len (vcm->wr_bitmap)); + } + if (n_bits && except_map) + { + clib_bitmap_validate (vcm->ex_bitmap, minbits); + clib_memcpy (vcm->ex_bitmap, except_map, vec_len (vcm->ex_bitmap)); + memset (except_map, 0, vec_len (vcm->ex_bitmap)); + } + + do + { + /* *INDENT-OFF* */ + if (n_bits) + { + if (read_map) + { + clib_bitmap_foreach (session_index, vcm->rd_bitmap, + ({ + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (rv < 0) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] session %d specified in " + "read_map is closed.", vcm->my_pid, + session_index); + bits_set = VPPCOM_EBADFD; + goto select_done; + } + + rv = vppcom_session_read_ready (session, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + if (except_map && vcm->ex_bitmap && + clib_bitmap_get (vcm->ex_bitmap, session_index) && + (rv < 0)) + { + // TBD: clib_warning + clib_bitmap_set_no_check (except_map, session_index, 1); + bits_set++; + } + else if (rv > 0) + { + // TBD: clib_warning + clib_bitmap_set_no_check (read_map, session_index, 1); + bits_set++; + } + })); + } + + if (write_map) + { + clib_bitmap_foreach (session_index, vcm->wr_bitmap, + ({ + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (rv < 0) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 0) + clib_warning ("[%d] session %d specified in " + "write_map is closed.", vcm->my_pid, + session_index); + bits_set = VPPCOM_EBADFD; + goto select_done; + } + + rv = vppcom_session_write_ready (session, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + if (write_map && (rv > 0)) + { + // TBD: clib_warning + clib_bitmap_set_no_check (write_map, session_index, 1); + bits_set++; + } + })); + } + + if (except_map) + { + clib_bitmap_foreach (session_index, vcm->ex_bitmap, + ({ + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (session_index, &session); + if (rv < 0) + { + clib_spinlock_unlock (&vcm->sessions_lockp); + if (VPPCOM_DEBUG > 1) + clib_warning ("[%d] session %d specified in " + "except_map is closed.", vcm->my_pid, + session_index); + bits_set = VPPCOM_EBADFD; + goto select_done; + } + + rv = vppcom_session_read_ready (session, session_index); + clib_spinlock_unlock (&vcm->sessions_lockp); + if (rv < 0) + { + // TBD: clib_warning + clib_bitmap_set_no_check (except_map, session_index, 1); + bits_set++; + } + })); + } + } + /* *INDENT-ON* */ + } + while (clib_time_now (&vcm->clib_time) < timeout); + +select_done: + return (bits_set); +} + +static inline void +vep_verify_epoll_chain (u32 vep_idx) +{ + session_t *session; + vppcom_epoll_t *vep; + int rv; + u32 sid; + + if (VPPCOM_DEBUG < 1) + return; + + /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ + rv = vppcom_session_at_index (vep_idx, &session); + if (PREDICT_FALSE (rv)) + { + clib_warning ("ERROR: Invalid vep_idx (%u)!", vep_idx); + goto done; + } + if (PREDICT_FALSE (!session->is_vep)) + { + clib_warning ("ERROR: vep_idx (%u) is not a vep!", vep_idx); + goto done; + } + if (VPPCOM_DEBUG > 1) + clib_warning ("vep_idx (%u): Dumping epoll chain\n" + "{\n" + " is_vep = %u\n" + " is_vep_session = %u\n" + " wait_cont_idx = 0x%x (%u)\n" + "}\n", + vep_idx, session->is_vep, session->is_vep_session, + session->wait_cont_idx, session->wait_cont_idx); + do + { + vep = &session->vep; + sid = vep->next_sid; + if (session->is_vep_session) + { + if (VPPCOM_DEBUG > 1) + clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n" + "{\n" + " next_sid = 0x%x (%u)\n" + " prev_sid = 0x%x (%u)\n" + " vep_idx = 0x%x (%u)\n" + " ev.events = 0x%x\n" + " ev.data.u64 = 0x%llx\n" + " et_mask = 0x%x\n" + "}\n", + vep_idx, sid, sid, + vep->next_sid, vep->next_sid, + vep->prev_sid, vep->prev_sid, + vep->vep_idx, vep->vep_idx, + vep->ev.events, vep->ev.data.u64, vep->et_mask); + } + if (sid != ~0) + { + rv = vppcom_session_at_index (sid, &session); + if (PREDICT_FALSE (rv)) + { + clib_warning ("ERROR: Invalid sid (%u)!", sid); + goto done; + } + if (PREDICT_FALSE (session->is_vep)) + clib_warning ("ERROR: sid (%u) is a vep!", vep_idx); + else if (PREDICT_FALSE (!session->is_vep_session)) + { + clib_warning ("ERROR: session (%u) is not a vep session!", sid); + goto done; + } + if (PREDICT_FALSE (session->vep.vep_idx != vep_idx)) + clib_warning ("ERROR: session (%u) vep_idx (%u) != " + "vep_idx (%u)!", + sid, session->vep.vep_idx, vep_idx); + } + } + while (sid != ~0); + +done: + if (VPPCOM_DEBUG > 1) + clib_warning ("vep_idx (%u): Dump complete!", vep_idx); +} + +int +vppcom_epoll_create (void) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *vep_session; + u32 vep_idx; + + clib_spinlock_lock (&vcm->sessions_lockp); + pool_get (vcm->sessions, vep_session); + memset (vep_session, 0, sizeof (*vep_session)); + vep_idx = vep_session - vcm->sessions; + + vep_session->is_vep = 1; + vep_session->vep.vep_idx = ~0; + vep_session->vep.next_sid = ~0; + vep_session->vep.prev_sid = ~0; + vep_session->wait_cont_idx = ~0; + clib_spinlock_unlock (&vcm->sessions_lockp); + + if (VPPCOM_DEBUG > 0) + clib_warning ("Created vep_idx %u!", vep_idx); + + return (vep_idx); +} + +int +vppcom_epoll_ctl (uint32_t vep_idx, int op, uint32_t session_index, + struct epoll_event *event) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *vep_session; + session_t *session; + int rv; + + if (vep_idx == session_index) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: vep_idx == session_index (%u)!", vep_idx); + return VPPCOM_EINVAL; + } + + clib_spinlock_lock (&vcm->sessions_lockp); + rv = vppcom_session_at_index (vep_idx, &vep_session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: Invalid vep_idx (%u)!", vep_idx); + goto done; + } + if (PREDICT_FALSE (!vep_session->is_vep)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: vep_idx (%u) is not a vep!", vep_idx); + rv = VPPCOM_EINVAL; + goto done; + } + + ASSERT (vep_session->vep.vep_idx == ~0); + ASSERT (vep_session->vep.prev_sid == ~0); + + rv = vppcom_session_at_index (session_index, &session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: Invalid session_index (%u)!", session_index); + goto done; + } + if (PREDICT_FALSE (session->is_vep)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: session_index (%u) is a vep!", vep_idx); + rv = VPPCOM_EINVAL; + goto done; + } + + switch (op) + { + case EPOLL_CTL_ADD: + if (PREDICT_FALSE (!event)) + { + clib_warning ("NULL pointer to epoll_event structure!"); + rv = VPPCOM_EINVAL; + goto done; + } + if (vep_session->vep.next_sid != ~0) + { + session_t *next_session; + rv = vppcom_session_at_index (vep_session->vep.next_sid, + &next_session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("EPOLL_CTL_ADD: Invalid vep.next_sid (%u) on" + " vep_idx (%u)!", vep_session->vep.next_sid, + vep_idx); + goto done; + } + ASSERT (next_session->vep.prev_sid == vep_idx); + next_session->vep.prev_sid = session_index; + } + session->vep.next_sid = vep_session->vep.next_sid; + session->vep.prev_sid = vep_idx; + session->vep.vep_idx = vep_idx; + session->vep.et_mask = VEP_DEFAULT_ET_MASK; + session->vep.ev = *event; + session->is_vep_session = 1; + vep_session->vep.next_sid = session_index; + if (VPPCOM_DEBUG > 1) + clib_warning ("EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x," + " data 0x%llx!", vep_idx, session_index, + event->events, event->data.u64); + break; + + case EPOLL_CTL_MOD: + if (PREDICT_FALSE (!event)) + { + clib_warning ("NULL pointer to epoll_event structure!"); + rv = VPPCOM_EINVAL; + goto done; + } + if (PREDICT_FALSE (!session->is_vep_session && + (session->vep.vep_idx != vep_idx))) + { + if (VPPCOM_DEBUG > 0) + { + if (!session->is_vep_session) + clib_warning ("EPOLL_CTL_MOD: session (%u) is not " + "a vep session!", session_index); + else + clib_warning ("EPOLL_CTL_MOD: session (%u) vep_idx (%u) != " + "vep_idx (%u)!", session_index, + session->vep.vep_idx, vep_idx); + } + rv = VPPCOM_EINVAL; + goto done; + } + session->vep.et_mask = VEP_DEFAULT_ET_MASK; + session->vep.ev = *event; + if (VPPCOM_DEBUG > 1) + clib_warning ("EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x," + " data 0x%llx!", vep_idx, session_index, + event->events, event->data.u64); + break; + + case EPOLL_CTL_DEL: + if (PREDICT_FALSE (!session->is_vep_session && + (session->vep.vep_idx != vep_idx))) + { + if (VPPCOM_DEBUG > 0) + { + if (!session->is_vep_session) + clib_warning ("EPOLL_CTL_DEL: session (%u) is not " + "a vep session!", session_index); + else + clib_warning ("EPOLL_CTL_DEL: session (%u) vep_idx (%u) != " + "vep_idx (%u)!", session_index, + session->vep.vep_idx, vep_idx); + } + rv = VPPCOM_EINVAL; + goto done; + } + + vep_session->wait_cont_idx = + (vep_session->wait_cont_idx == session_index) ? + session->vep.next_sid : vep_session->wait_cont_idx; + + if (session->vep.prev_sid == vep_idx) + vep_session->vep.next_sid = session->vep.next_sid; + else + { + session_t *prev_session; + rv = vppcom_session_at_index (session->vep.prev_sid, &prev_session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("EPOLL_CTL_DEL: Invalid vep.prev_sid (%u) on" + " sid (%u)!", session->vep.prev_sid, + session_index); + goto done; + } + ASSERT (prev_session->vep.next_sid == session_index); + prev_session->vep.next_sid = session->vep.next_sid; + } + if (session->vep.next_sid != ~0) + { + session_t *next_session; + rv = vppcom_session_at_index (session->vep.next_sid, &next_session); + if (PREDICT_FALSE (rv)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("EPOLL_CTL_DEL: Invalid vep.next_sid (%u) on" + " sid (%u)!", session->vep.next_sid, + session_index); + goto done; + } + ASSERT (next_session->vep.prev_sid == session_index); + next_session->vep.prev_sid = session->vep.prev_sid; + } + + memset (&session->vep, 0, sizeof (session->vep)); + session->vep.next_sid = ~0; + session->vep.prev_sid = ~0; + session->vep.vep_idx = ~0; + session->is_vep_session = 0; + if (VPPCOM_DEBUG > 1) + clib_warning ("EPOLL_CTL_DEL: vep_idx %u, sid %u!", vep_idx, + session_index); + break; + + default: + clib_warning ("Invalid operation (%d)!", op); + rv = VPPCOM_EINVAL; + } + + vep_verify_epoll_chain (vep_idx); + +done: + clib_spinlock_unlock (&vcm->sessions_lockp); + return rv; +} + +#define VCL_LOCK_AND_GET_SESSION(I, S) \ +do { \ + vppcom_main_t *vcm = &vppcom_main; \ + \ + clib_spinlock_lock (&vcm->sessions_lockp); \ + rv = vppcom_session_at_index (I, S); \ + if (PREDICT_FALSE (rv)) \ + { \ + clib_spinlock_unlock (&vcm->sessions_lockp); \ + \ + if (VPPCOM_DEBUG > 0) \ + clib_warning ("ERROR: Invalid ##I (%u)!", I); \ + \ + goto done; \ + } \ +} while (0) + +int +vppcom_epoll_wait (uint32_t vep_idx, struct epoll_event *events, + int maxevents, double wait_for_time) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *vep_session; + int rv; + f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; + int num_ev = 0; + u32 vep_next_sid, wait_cont_idx; + u8 is_vep; + + if (PREDICT_FALSE (maxevents <= 0)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: Invalid maxevents (%d)!", maxevents); + return VPPCOM_EINVAL; + } + if (PREDICT_FALSE (wait_for_time < 0)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: Invalid wait_for_time (%f)!", wait_for_time); + return VPPCOM_EINVAL; + } + memset (events, 0, sizeof (*events) * maxevents); + + VCL_LOCK_AND_GET_SESSION (vep_idx, &vep_session); + vep_next_sid = vep_session->vep.next_sid; + is_vep = vep_session->is_vep; + wait_cont_idx = vep_session->wait_cont_idx; + clib_spinlock_unlock (&vcm->sessions_lockp); + + if (PREDICT_FALSE (!is_vep)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: vep_idx (%u) is not a vep!", vep_idx); + rv = VPPCOM_EINVAL; + goto done; + } + if ((VPPCOM_DEBUG > 0) && (PREDICT_FALSE (vep_next_sid == ~0))) + { + clib_warning ("WARNING: vep_idx (%u) is empty!", vep_idx); + goto done; + } + + do + { + u32 sid; + u32 next_sid = ~0; + session_t *session; + + for (sid = (wait_cont_idx == ~0) ? vep_next_sid : wait_cont_idx; + sid != ~0; sid = next_sid) + { + u32 session_events, et_mask, clear_et_mask, session_vep_idx; + u8 add_event, is_vep_session; + int ready; + u64 session_ev_data; + + VCL_LOCK_AND_GET_SESSION (sid, &session); + next_sid = session->vep.next_sid; + session_events = session->vep.ev.events; + et_mask = session->vep.et_mask; + is_vep = session->is_vep; + is_vep_session = session->is_vep_session; + session_vep_idx = session->vep.vep_idx; + session_ev_data = session->vep.ev.data.u64; + clib_spinlock_unlock (&vcm->sessions_lockp); + + if (PREDICT_FALSE (is_vep)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("ERROR: sid (%u) is a vep!", vep_idx); + rv = VPPCOM_EINVAL; + goto done; + } + if (PREDICT_FALSE (!is_vep_session)) + { + if (VPPCOM_DEBUG > 0) + clib_warning ("EPOLL_CTL_MOD: session (%u) is not " + "a vep session!", sid); + rv = VPPCOM_EINVAL; + goto done; + } + if (PREDICT_FALSE (session_vep_idx != vep_idx)) + { + clib_warning ("EPOLL_CTL_MOD: session (%u) " + "vep_idx (%u) != vep_idx (%u)!", + sid, session->vep.vep_idx, vep_idx); + rv = VPPCOM_EINVAL; + goto done; + } + + add_event = clear_et_mask = 0; + + if ((EPOLLIN & session_events) && (EPOLLIN & et_mask)) + { + VCL_LOCK_AND_GET_SESSION (sid, &session); + ready = vppcom_session_read_ready (session, sid); + clib_spinlock_unlock (&vcm->sessions_lockp); + if (ready > 0) + { + add_event = 1; + events[num_ev].events |= EPOLLIN; + if (EPOLLET & session_events) + clear_et_mask |= EPOLLIN; + } + else if (ready < 0) + { + add_event = 1; + switch (ready) + { + case VPPCOM_ECONNRESET: + events[num_ev].events |= EPOLLHUP | EPOLLRDHUP; + break; + + default: + events[num_ev].events |= EPOLLERR; + break; + } + } + } + + if ((EPOLLOUT & session_events) && (EPOLLOUT & et_mask)) + { + VCL_LOCK_AND_GET_SESSION (sid, &session); + ready = vppcom_session_write_ready (session, sid); + clib_spinlock_unlock (&vcm->sessions_lockp); + if (ready > 0) + { + add_event = 1; + events[num_ev].events |= EPOLLOUT; + if (EPOLLET & session_events) + clear_et_mask |= EPOLLOUT; + } + else if (ready < 0) + { + add_event = 1; + switch (ready) + { + case VPPCOM_ECONNRESET: + events[num_ev].events |= EPOLLHUP; + break; + + default: + events[num_ev].events |= EPOLLERR; + break; + } + } + } + + if (add_event) + { + events[num_ev].data.u64 = session_ev_data; + if (EPOLLONESHOT & session_events) + { + VCL_LOCK_AND_GET_SESSION (sid, &session); + session->vep.ev.events = 0; + clib_spinlock_unlock (&vcm->sessions_lockp); + } + num_ev++; + if (num_ev == maxevents) + { + VCL_LOCK_AND_GET_SESSION (vep_idx, &vep_session); + vep_session->wait_cont_idx = next_sid; + clib_spinlock_unlock (&vcm->sessions_lockp); + goto done; + } + } + if (wait_cont_idx != ~0) + { + if (next_sid == ~0) + next_sid = vep_next_sid; + else if (next_sid == wait_cont_idx) + next_sid = ~0; + } + } + } + while ((num_ev == 0) && (clib_time_now (&vcm->clib_time) <= timeout)); + + if (wait_cont_idx != ~0) + { + VCL_LOCK_AND_GET_SESSION (vep_idx, &vep_session); + vep_session->wait_cont_idx = ~0; + clib_spinlock_unlock (&vcm->sessions_lockp); + } +done: + return (rv != VPPCOM_OK) ? rv : num_ev; +} + +int +vppcom_session_attr (uint32_t session_index, uint32_t op, + void *buffer, uint32_t * buflen) +{ + vppcom_main_t *vcm = &vppcom_main; + session_t *session; + int rv = VPPCOM_OK; + u32 *flags = buffer; + vppcom_endpt_t *ep = buffer; + + VCL_LOCK_AND_GET_SESSION (session_index, &session); + switch (op) + { + case VPPCOM_ATTR_GET_NREAD: + rv = vppcom_session_read_ready (session, session_index); + if (VPPCOM_DEBUG > 0) + clib_warning ("VPPCOM_ATTR_GET_NREAD: nread = %d", rv); + + break; + + case VPPCOM_ATTR_PEEK_NREAD: + /* TBD */ + break; + + case VPPCOM_ATTR_GET_FLAGS: + if (buffer && buflen && (*buflen >= sizeof (*flags))) + { + *flags = O_RDWR | ((session->is_nonblocking) ? O_NONBLOCK : 0); + *buflen = sizeof (*flags); + if (VPPCOM_DEBUG > 0) + clib_warning ("VPPCOM_ATTR_GET_FLAGS: flags = 0x%08x, " + "is_nonblocking = %u", *flags, + session->is_nonblocking); + } + else + rv = VPPCOM_EINVAL; + break; + + case VPPCOM_ATTR_SET_FLAGS: + if (buffer && buflen && (*buflen >= sizeof (*flags))) + { + session->is_nonblocking = (*flags & O_NONBLOCK) ? 1 : 0; + if (VPPCOM_DEBUG > 0) + clib_warning ("VPPCOM_ATTR_SET_FLAGS: flags = 0x%08x, " + "is_nonblocking = %u", *flags, + session->is_nonblocking); + } + else + rv = VPPCOM_EINVAL; + break; + + case VPPCOM_ATTR_GET_PEER_ADDR: + if (buffer && buflen && (*buflen >= sizeof (*ep))) + { + ep->vrf = session->vrf; + ep->is_ip4 = session->peer_addr.is_ip4; + ep->port = session->port; + if (session->peer_addr.is_ip4) + clib_memcpy (ep->ip, &session->peer_addr.ip46.ip4, + sizeof (ip4_address_t)); + else + clib_memcpy (ep->ip, &session->peer_addr.ip46.ip6, + sizeof (ip6_address_t)); + *buflen = sizeof (*ep); + if (VPPCOM_DEBUG > 0) + clib_warning ("VPPCOM_ATTR_GET_PEER_ADDR: is_ip4 = %u, " + "addr = %U", ep->is_ip4, format_ip46_address, + &session->peer_addr.ip46, ep->is_ip4); + } + else + rv = VPPCOM_EINVAL; + break; + + case VPPCOM_ATTR_GET_LCL_ADDR: + if (buffer && buflen && (*buflen >= sizeof (*ep))) + { + ep->vrf = session->vrf; + ep->is_ip4 = session->lcl_addr.is_ip4; + ep->port = session->port; + if (session->lcl_addr.is_ip4) + clib_memcpy (ep->ip, &session->lcl_addr.ip46.ip4, + sizeof (ip4_address_t)); + else + clib_memcpy (ep->ip, &session->lcl_addr.ip46.ip6, + sizeof (ip6_address_t)); + *buflen = sizeof (*ep); + if (VPPCOM_DEBUG > 0) + if (VPPCOM_DEBUG > 0) + clib_warning ("VPPCOM_ATTR_GET_LCL_ADDR: is_ip4 = %u, " + "addr = %U", ep->is_ip4, format_ip46_address, + &session->lcl_addr.ip46, ep->is_ip4); + } + else + rv = VPPCOM_EINVAL; + break; + + case VPPCOM_ATTR_SET_REUSEADDR: + break; + + case VPPCOM_ATTR_SET_BROADCAST: + break; + + case VPPCOM_ATTR_SET_V6ONLY: + break; + + case VPPCOM_ATTR_SET_KEEPALIVE: + break; + + case VPPCOM_ATTR_SET_TCP_KEEPIDLE: + break; + + case VPPCOM_ATTR_SET_TCP_KEEPINTVL: + break; + + default: + rv = VPPCOM_EINVAL; + break; + } + +done: + clib_spinlock_unlock (&vcm->sessions_lockp); + return rv; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |