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gerrit.nordix.org / fdio / vpp / 6a9b68b268f9dc87a221fac0ec9b0b67c16106ca / . / src / vcl / vppcom.c
blob: 2e867c7f0364a2e232a4985d576481dd633004b7 [file] [log] [blame]
/*
* 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_INIT 2 for connection debug,
* 3 for read/write debug output
* or
* export VCL_DEBUG=<#> to set dynamically.
*/
#define VPPCOM_DEBUG_INIT 1
#else
#define VPPCOM_DEBUG_INIT 0
#endif
#define VPPCOM_DEBUG vcm->debug
/*
* 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)
#define VEP_UNSUPPORTED_EVENTS (EPOLLONESHOT|EPOLLEXCLUSIVE)
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;
u8 *segment_name;
u32 sm_seg_index;
u32 client_context;
u64 vpp_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 lcl_port; // network order
u16 peer_port; // network order
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;
u8 app_proxy_transport_tcp;
u8 app_proxy_transport_udp;
u8 app_scope_local;
u8 app_scope_global;
u8 *namespace_id;
u64 namespace_secret;
f64 app_timeout;
f64 session_timeout;
f64 accept_timeout;
} vppcom_cfg_t;
typedef struct vppcom_main_t_
{
u8 init;
u32 debug;
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;
/* 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;
/* NOTE: _vppcom_main is only used until the heap is allocated.
* Do not access it directly -- use vcm which will point to
* the heap allocated copy after init.
*/
static vppcom_main_t _vppcom_main = {
.debug = VPPCOM_DEBUG_INIT,
.my_client_index = ~0
};
static vppcom_main_t *vcm = &_vppcom_main;
#define VCL_LOCK_AND_GET_SESSION(I, S) \
do { \
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 ("[%s] ERROR: Invalid ##I (%u)!", \
getpid (), I); \
\
goto done; \
} \
} while (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)
{
/* 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!",
getpid (), session_index);
return VPPCOM_EBADFD;
}
*sess = pool_elt_at_index (vcm->sessions, session_index);
return VPPCOM_OK;
}
static inline void
vppcom_session_table_add_listener (u64 listener_handle, u32 value)
{
/* Session and listener handles have different formats. The latter has
* the thread index in the upper 32 bits while the former has the session
* type. Knowing that, for listeners we just flip the MSB to 1 */
listener_handle |= 1ULL << 63;
hash_set (vcm->session_index_by_vpp_handles, listener_handle, value);
}
static inline session_t *
vppcom_session_table_lookup_listener (u64 listener_handle)
{
uword *p;
u64 handle = listener_handle | (1ULL << 63);
p = hash_get (vcm->session_index_by_vpp_handles, handle);
if (!p)
{
clib_warning ("[%d] couldn't find listen session: unknown vpp "
"listener handle %llx", getpid (), listener_handle);
return 0;
}
if (pool_is_free_index (vcm->sessions, p[0]))
{
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] invalid listen session, sid (%u)", getpid (),
p[0]);
return 0;
}
return pool_elt_at_index (vcm->sessions, p[0]);
}
static inline void
vppcom_session_table_del_listener (u64 listener_handle)
{
listener_handle |= 1ULL << 63;
hash_unset (vcm->session_index_by_vpp_handles, listener_handle);
}
static int
vppcom_connect_to_vpp (char *app_name)
{
api_main_t *am = &api_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!", getpid (), 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)
{
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)
{
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)
{
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)", getpid (),
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)
{
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)", getpid (),
vppcom_session_state_str (state), state);
return VPPCOM_ETIMEDOUT;
}
static inline int
vppcom_wait_for_client_session_index (f64 wait_for_time)
{
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", getpid ());
return VPPCOM_ETIMEDOUT;
}
/*
* VPP-API message functions
*/
static void
vppcom_send_session_enable_disable (u8 is_enable)
{
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)
{
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)",
getpid (), 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)
{
if (mp->retval)
{
clib_warning ("[%d] session_enable_disable failed: %U", getpid (),
format_api_error, ntohl (mp->retval));
}
else
vcm->app_state = STATE_APP_ENABLED;
}
static void
vppcom_app_send_attach (void)
{
vl_api_application_attach_t *bmp;
u8 nsid_len = vec_len (vcm->cfg.namespace_id);
u8 app_is_proxy = (vcm->cfg.app_proxy_transport_tcp ||
vcm->cfg.app_proxy_transport_udp);
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 |
(vcm->cfg.app_scope_local ? APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE : 0) |
(vcm->cfg.app_scope_global ? APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE : 0) |
(app_is_proxy ? APP_OPTIONS_FLAGS_IS_PROXY : 0);
bmp->options[APP_OPTIONS_PROXY_TRANSPORT] =
(vcm->cfg.app_proxy_transport_tcp ? 1 << TRANSPORT_PROTO_TCP : 0) |
(vcm->cfg.app_proxy_transport_udp ? 1 << TRANSPORT_PROTO_UDP : 0);
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;
if (nsid_len)
{
bmp->namespace_id_len = nsid_len;
clib_memcpy (bmp->namespace_id, vcm->cfg.namespace_id, nsid_len);
bmp->options[APP_OPTIONS_NAMESPACE_SECRET] = vcm->cfg.namespace_secret;
}
vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & bmp);
}
static int
vppcom_app_attach (void)
{
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)",
getpid (), vppcom_retval_str (rv), rv);
return rv;
}
return VPPCOM_OK;
}
static void
vppcom_app_detach (void)
{
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)
{
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", getpid (),
format_api_error, ntohl (mp->retval));
return;
}
if (mp->segment_name_length == 0)
{
clib_warning ("[%d] segment_name_length zero", getpid ());
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", getpid (),
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)
{
if (mp->retval)
clib_warning ("[%d] detach failed: %U", getpid (), 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)
{
uword *p;
u32 session_index = ~0;
p = hash_get (vcm->session_index_by_vpp_handles, mp->handle);
if (p)
{
session_t *session = 0;
int rv;
session_index = p[0];
hash_unset (vcm->session_index_by_vpp_handles, mp->handle);
clib_spinlock_lock (&vcm->sessions_lockp);
rv = vppcom_session_at_index (session_index, &session);
if (PREDICT_FALSE (rv))
{
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] invalid session, sid %u has been closed!",
getpid (), session_index);
}
else
{
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] vpp handle 0x%llx, sid %u disconnected!",
getpid (), mp->handle, session_index);
session->state = STATE_DISCONNECT;
}
clib_spinlock_unlock (&vcm->sessions_lockp);
}
else
{
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] couldn't find session: unknown vpp handle 0x%llx",
getpid (), mp->handle);
}
if (mp->retval)
clib_warning ("[%d] disconnect_session vpp handle 0x%llx, sid %u "
"failed: %U", getpid (), mp->handle, session_index,
format_api_error, ntohl (mp->retval));
}
static void
vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp)
{
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",
getpid (), mp->segment_name);
return;
}
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] mapped new segment '%s' size %d", getpid (),
mp->segment_name, mp->segment_size);
}
static void
vl_api_disconnect_session_t_handler (vl_api_disconnect_session_t * mp)
{
session_t *session = 0;
vl_api_disconnect_session_reply_t *rmp;
uword *p;
int rv = 0, rval;
p = hash_get (vcm->session_index_by_vpp_handles, mp->handle);
if (VPPCOM_DEBUG > 0)
{
if (!p)
{
clib_warning ("[%d] request to disconnect invalid handle (%u)!",
getpid (), mp->handle);
rv = -11;
goto done;
}
clib_warning ("[%d] disconnecting handle %u sid (%u)!", getpid (),
mp->handle, p[0]);
}
goto done;
if (p)
{
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!",
getpid (), 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: unknown vpp handle 0x%llx",
getpid (), mp->handle);
rv = -11;
}
done:
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)
{
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!",
getpid (), 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: unknown vpp handle 0x%llx",
getpid (), 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)
{
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", getpid (), format_api_error,
ntohl (mp->retval));
return;
}
session_index = mp->context;
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] session_index = %d 0x%08x", getpid (),
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!",
getpid (), 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\n",
getpid (), 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",
getpid (), a->segment_name);
return;
}
}
/*
* Setup session
*/
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_handle = mp->handle;
session->lcl_addr.is_ip4 = mp->is_ip4;
clib_memcpy (&session->lcl_addr.ip46, mp->lcl_ip,
sizeof (session->peer_addr.ip46));
session->lcl_port = mp->lcl_port;
session->state = STATE_CONNECT;
/* Add it to lookup table */
hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index);
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] client sid %d, vpp handle 0x%llx\n"
" session_rx_fifo %p, refcnt %d\n"
" session_tx_fifo %p, refcnt %d",
getpid (), session_index, mp->handle,
session->server_rx_fifo,
session->server_rx_fifo->refcnt,
session->server_tx_fifo, session->server_tx_fifo->refcnt);
clib_spinlock_unlock (&vcm->sessions_lockp);
}
static void
vppcom_send_connect_sock (session_t * session, u32 session_index)
{
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",
getpid (), 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->peer_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 inline void
vppcom_send_disconnect (session_t * session)
{
vl_api_disconnect_session_t *dmp;
/* Assumes caller as acquired the spinlock: vcm->sessions_lockp */
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_handle;
vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & dmp);
}
static void
vl_api_bind_sock_reply_t_handler (vl_api_bind_sock_reply_t * mp)
{
session_t *session = 0;
int rv;
if (mp->retval)
clib_warning ("[%d] bind failed: %U", getpid (), 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_handle = mp->handle;
session->lcl_addr.is_ip4 = mp->lcl_is_ip4;
clib_memcpy (&session->lcl_addr.ip46, mp->lcl_ip,
sizeof (session->peer_addr.ip46));
session->lcl_port = mp->lcl_port;
vppcom_session_table_add_listener (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)
{
session_t *session = 0;
clib_spinlock_lock (&vcm->sessions_lockp);
session = vppcom_session_table_lookup_listener (vcm->bind_session_index);
if (session)
{
if ((VPPCOM_DEBUG > 1) && (mp->retval))
clib_warning ("[%d] unbind failed: %U", getpid (), format_api_error,
ntohl (mp->retval));
vppcom_session_table_del_listener (vcm->bind_session_index);
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 inline void
vppcom_send_accept_session_reply (u32 handle, int retval)
{
vl_api_accept_session_reply_t *rmp;
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 (retval);
rmp->handle = handle;
vl_msg_api_send_shmem (vcm->vl_input_queue, (u8 *) & rmp);
}
static void
vl_api_accept_session_t_handler (vl_api_accept_session_t * mp)
{
svm_fifo_t *rx_fifo, *tx_fifo;
session_t *session, *listen_session;
u32 session_index;
clib_spinlock_lock (&vcm->sessions_lockp);
if (!clib_fifo_free_elts (vcm->client_session_index_fifo))
{
clib_warning ("[%d] client session queue is full!", getpid ());
vppcom_send_accept_session_reply (mp->handle,
VNET_API_ERROR_QUEUE_FULL);
clib_spinlock_unlock (&vcm->sessions_lockp);
return;
}
listen_session = vppcom_session_table_lookup_listener (mp->listener_handle);
if (!listen_session)
{
clib_warning ("[%d] ERROR: couldn't find listen session: unknown vpp "
"listener handle %llx", getpid (), mp->listener_handle);
clib_spinlock_unlock (&vcm->sessions_lockp);
return;
}
/* 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->vpp_handle = mp->handle;
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->peer_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);
session->lcl_port = listen_session->lcl_port;
session->lcl_addr = listen_session->lcl_addr;
/* TBD: move client_session_index_fifo into listener session */
clib_fifo_add1 (vcm->client_session_index_fifo, session_index);
clib_spinlock_unlock (&vcm->sessions_lockp);
if (VPPCOM_DEBUG > 1)
{
u8 *ip_str = format (0, "%U", format_ip46_address, &mp->ip, mp->is_ip4);
clib_warning ("[%d] received request to accept session (sid %d) "
"from %s:%d", getpid (), session_index, ip_str,
clib_net_to_host_u16 (mp->port));
vec_free (ip_str);
}
}
static void
vppcom_send_connect_session_reply (session_t * session, int retval)
{
vl_api_connect_session_reply_t *rmp;
u32 len;
unix_shared_memory_queue_t *client_q;
rmp = vl_msg_api_alloc (sizeof (*rmp));
memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id = ntohs (VL_API_CONNECT_SESSION_REPLY);
rmp->context = session->client_context;
rmp->retval = htonl (retval);
rmp->handle = session->vpp_handle;
rmp->server_rx_fifo = pointer_to_uword (session->server_rx_fifo);
rmp->server_tx_fifo = pointer_to_uword (session->server_tx_fifo);
rmp->vpp_event_queue_address = pointer_to_uword (session->vpp_event_queue);
rmp->segment_size = vcm->cfg.segment_size;
len = vec_len (session->segment_name);
rmp->segment_name_length = clib_min (len, sizeof (rmp->segment_name));
clib_memcpy (rmp->segment_name, session->segment_name,
rmp->segment_name_length - 1);
clib_memcpy (rmp->lcl_ip, session->lcl_addr.ip46.as_u8,
sizeof (rmp->lcl_ip));
rmp->is_ip4 = session->lcl_addr.is_ip4;
client_q = uword_to_pointer (session->client_queue_address,
unix_shared_memory_queue_t *);
ASSERT (client_q);
vl_msg_api_send_shmem (client_q, (u8 *) & rmp);
}
/*
* Acting as server for redirected connect requests
*/
static void
vl_api_connect_sock_t_handler (vl_api_connect_sock_t * mp)
{
u32 session_index;
session_t *session = 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!", getpid ());
clib_spinlock_unlock (&vcm->sessions_lockp);
/* TBD: fix handle */
vppcom_send_accept_session_reply (0, VNET_API_ERROR_QUEUE_FULL);
return;
}
pool_get (vcm->sessions, session);
memset (session, 0, sizeof (*session));
session_index = session - vcm->sessions;
session->client_context = mp->context;
session->vpp_handle = session_index;
session->client_queue_address = mp->client_queue_address;
session->is_cut_thru = 1;
session->is_server = 1;
session->peer_port = mp->port;
session->peer_addr.is_ip4 = mp->is_ip4;
clib_memcpy (&session->peer_addr.ip46, mp->ip,
sizeof (session->peer_addr.ip46));
session->state = STATE_ACCEPT;
clib_fifo_add1 (vcm->client_session_index_fifo, session_index);
if (VPPCOM_DEBUG > 1)
clib_warning
("[%d] Got a cut-thru connect request to client: "
"sid %d, clib_fifo_elts %u!\n", getpid (), session_index,
clib_fifo_elts (vcm->client_session_index_fifo));
clib_spinlock_unlock (&vcm->sessions_lockp);
}
static void
vppcom_send_bind_sock (session_t * session)
{
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->lcl_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)
{
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!",
getpid (), 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_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, u32 session_index)
{
svm_fifo_segment_main_t *sm = &svm_fifo_segment_main;
svm_fifo_segment_private_t *seg;
int rv = VPPCOM_OK;
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] sid %d, seg_nxd %d:\n"
" server_rx_fifo %p, refcnt = %d\n"
" server_tx_fifo %p, refcnt = %d",
getpid (), session_index, session->sm_seg_index,
session->server_rx_fifo, session->server_rx_fifo->refcnt,
session->server_tx_fifo, session->server_tx_fifo->refcnt);
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)
{
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!",
getpid (), session_index);
return VPPCOM_EBADFD;
}
clib_spinlock_unlock (&vcm->sessions_lockp);
if (vcm->bind_session_index != session_index)
clib_warning ("[%d] ERROR: unbinding a not bound listener %u (%u)",
session_index, vcm->bind_session_index);
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)",
getpid (), vppcom_retval_str (rv), rv);
return rv;
}
return VPPCOM_OK;
}
static inline int
vppcom_session_disconnect (u32 session_index)
{
int rv;
session_t *session;
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!",
getpid (), session_index);
return rv;
}
if (!session->is_cut_thru)
{
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] disconnecting sid (%u)", getpid (),
session_index);
vppcom_send_disconnect (session);
clib_spinlock_unlock (&vcm->sessions_lockp);
rv = vppcom_wait_for_session_state_change (session_index,
STATE_DISCONNECT, 1.0);
/* TBD: Force clean up on error/timeout since there is no other
* way to recover from a failed disconnect.
*/
if ((VPPCOM_DEBUG > 0) && (rv < 0))
clib_warning ("[%d] disconnect (session %d) failed, rv = %s (%d)",
getpid (), session_index, vppcom_retval_str (rv), rv);
}
else
{
/* TBD: Handle cut-thru disconnect */
clib_spinlock_unlock (&vcm->sessions_lockp);
}
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_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;
void *vcl_mem;
void *heap;
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)",
getpid (), 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)",
getpid (), argv[i], argv[i + 1],
vcl_cfg->heapsize, vcl_cfg->heapsize);
goto defaulted;
}
}
}
defaulted:
if (fp != NULL)
fclose (fp);
if (argv != NULL)
free (argv);
vcl_mem = mmap (0, vcl_cfg->heapsize, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
if (vcl_mem == MAP_FAILED)
{
clib_unix_error ("[%d] ERROR: mmap(0, %lld == 0x%llx, "
"PROT_READ | PROT_WRITE,MAP_SHARED | MAP_ANONYMOUS, "
"-1, 0) failed!",
getpid (), vcl_cfg->heapsize, vcl_cfg->heapsize);
return;
}
heap = clib_mem_init (vcl_mem, vcl_cfg->heapsize);
if (!heap)
{
clib_warning ("[%d] ERROR: clib_mem_init() failed!", getpid ());
return;
}
vcl_mem = clib_mem_alloc (sizeof (_vppcom_main));
if (!vcl_mem)
{
clib_warning ("[%d] ERROR: clib_mem_alloc() failed!", getpid ());
return;
}
clib_memcpy (vcl_mem, &_vppcom_main, sizeof (_vppcom_main));
vcm = vcl_mem;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] allocated VCL heap = %p, size %lld (0x%llx)",
getpid (), heap, vcl_cfg->heapsize, vcl_cfg->heapsize);
}
static void
vppcom_cfg_read (char *conf_fname)
{
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!",
getpid (), conf_fname);
goto file_done;
}
if (fstat (fd, &s) < 0)
{
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] failed to stat `%s'", getpid (), 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'", getpid (), 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, "vcl {"))
{
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)",
getpid (), 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",
getpid (), 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", getpid (), uid);
}
else if (unformat (line_input, "gid %d", &gid))
{
vl_set_memory_gid (gid);
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured gid %d", getpid (), gid);
}
else if (unformat (line_input, "segment-baseva 0x%lx",
&vcl_cfg->segment_baseva))
{
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured segment_baseva 0x%lx",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)", getpid (),
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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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)",
getpid (), 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",
getpid (), 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",
getpid (), 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",
getpid (), vcl_cfg->accept_timeout);
}
else if (unformat (line_input, "app-proxy-transport-tcp"))
{
vcl_cfg->app_proxy_transport_tcp = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_proxy_transport_tcp (%d)",
getpid (), vcl_cfg->app_proxy_transport_tcp);
}
else if (unformat (line_input, "app-proxy-transport-udp"))
{
vcl_cfg->app_proxy_transport_udp = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_proxy_transport_udp (%d)",
getpid (), vcl_cfg->app_proxy_transport_udp);
}
else if (unformat (line_input, "app-scope-local"))
{
vcl_cfg->app_scope_local = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_scope_local (%d)",
getpid (), vcl_cfg->app_scope_local);
}
else if (unformat (line_input, "app-scope-global"))
{
vcl_cfg->app_scope_global = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_scope_global (%d)",
getpid (), vcl_cfg->app_scope_global);
}
else if (unformat (line_input, "namespace-secret %lu",
&vcl_cfg->namespace_secret))
{
if (VPPCOM_DEBUG > 0)
clib_warning
("[%d] configured namespace_secret %lu (0x%lx)",
getpid (), vcl_cfg->namespace_secret,
vcl_cfg->namespace_secret);
}
else if (unformat (line_input, "namespace-id %v",
&vcl_cfg->namespace_id))
{
vl_api_application_attach_t *mp;
u32 max_nsid_vec_len = sizeof (mp->namespace_id) - 1;
u32 nsid_vec_len = vec_len (vcl_cfg->namespace_id);
if (nsid_vec_len > max_nsid_vec_len)
{
_vec_len (vcl_cfg->namespace_id) = max_nsid_vec_len;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured namespace_id is too long,"
" truncated to %d characters!", getpid (),
max_nsid_vec_len);
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured namespace_id %v",
getpid (), vcl_cfg->namespace_id);
}
else if (unformat (line_input, "}"))
{
vc_cfg_input = 0;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] completed parsing vppcom config!",
getpid ());
goto input_done;
}
else
{
if (line_input->buffer[line_input->index] != '#')
{
clib_warning ("[%d] Unknown vppcom config option: '%s'",
getpid (), (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_cfg_t *vcl_cfg = &vcm->cfg;
u8 *heap;
mheap_t *h;
int rv;
if (!vcm->init)
{
char *conf_fname;
char *env_var_str;
vcm->init = 1;
vppcom_cfg_init (vcl_cfg);
env_var_str = getenv (VPPCOM_ENV_DEBUG);
if (env_var_str)
{
u32 tmp;
if (sscanf (env_var_str, "%u", &tmp) != 1)
clib_warning ("[%d] Invalid debug level specified in "
"the environment variable "
VPPCOM_ENV_DEBUG
" (%s)!\n", getpid (), env_var_str);
else
{
vcm->debug = tmp;
clib_warning ("[%d] configured debug level (%u) from "
VPPCOM_ENV_DEBUG "!", getpid (), vcm->debug);
}
}
conf_fname = getenv (VPPCOM_ENV_CONF);
if (!conf_fname)
{
conf_fname = VPPCOM_CONF_DEFAULT;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] getenv '%s' failed!", getpid (),
VPPCOM_ENV_CONF);
}
vppcom_cfg_heapsize (conf_fname);
clib_fifo_validate (vcm->client_session_index_fifo,
vcm->cfg.listen_queue_size);
vppcom_cfg_read (conf_fname);
env_var_str = getenv (VPPCOM_ENV_APP_NAMESPACE_ID);
if (env_var_str)
{
u32 ns_id_vec_len = strlen (env_var_str);
vec_reset_length (vcm->cfg.namespace_id);
vec_validate (vcm->cfg.namespace_id, ns_id_vec_len - 1);
clib_memcpy (vcm->cfg.namespace_id, env_var_str, ns_id_vec_len);
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured namespace_id (%v) from "
VPPCOM_ENV_APP_NAMESPACE_ID "!", getpid (),
vcm->cfg.namespace_id);
}
env_var_str = getenv (VPPCOM_ENV_APP_NAMESPACE_SECRET);
if (env_var_str)
{
u64 tmp;
if (sscanf (env_var_str, "%lu", &tmp) != 1)
clib_warning ("[%d] Invalid namespace secret specified in "
"the environment variable "
VPPCOM_ENV_APP_NAMESPACE_SECRET
" (%s)!\n", getpid (), env_var_str);
else
{
vcm->cfg.namespace_secret = tmp;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured namespace secret (%lu) from "
VPPCOM_ENV_APP_NAMESPACE_ID "!", getpid (),
vcm->cfg.namespace_secret);
}
}
if (getenv (VPPCOM_ENV_APP_PROXY_TRANSPORT_TCP))
{
vcm->cfg.app_proxy_transport_tcp = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_proxy_transport_tcp (%u) from "
VPPCOM_ENV_APP_PROXY_TRANSPORT_TCP "!", getpid (),
vcm->cfg.app_proxy_transport_tcp);
}
if (getenv (VPPCOM_ENV_APP_PROXY_TRANSPORT_UDP))
{
vcm->cfg.app_proxy_transport_udp = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_proxy_transport_udp (%u) from "
VPPCOM_ENV_APP_PROXY_TRANSPORT_UDP "!", getpid (),
vcm->cfg.app_proxy_transport_udp);
}
if (getenv (VPPCOM_ENV_APP_SCOPE_LOCAL))
{
vcm->cfg.app_scope_local = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_scope_local (%u) from "
VPPCOM_ENV_APP_SCOPE_LOCAL "!", getpid (),
vcm->cfg.app_scope_local);
}
if (getenv (VPPCOM_ENV_APP_SCOPE_GLOBAL))
{
vcm->cfg.app_scope_global = 1;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] configured app_scope_global (%u) from "
VPPCOM_ENV_APP_SCOPE_GLOBAL "!", getpid (),
vcm->cfg.app_scope_global);
}
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.", getpid ());
return rv;
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sending session enable", getpid ());
rv = vppcom_app_session_enable ();
if (rv)
{
clib_warning ("[%d] vppcom_app_session_enable() failed!",
getpid ());
return rv;
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sending app attach", getpid ());
rv = vppcom_app_attach ();
if (rv)
{
clib_warning ("[%d] vppcom_app_attach() failed!", getpid ());
return rv;
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] app_name '%s', my_client_index %d (0x%x)",
getpid (), app_name, vcm->my_client_index,
vcm->my_client_index);
}
return VPPCOM_OK;
}
void
vppcom_app_destroy (void)
{
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)",
getpid (), 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)",
getpid (), 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)
{
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", getpid (), session_index);
return (int) session_index;
}
int
vppcom_session_close (uint32_t session_index)
{
session_t *session = 0;
int rv;
u8 is_server;
u8 is_listen;
u8 is_cut_thru;
u8 is_vep;
u8 is_vep_session;
u32 next_sid;
u32 vep_idx;
session_state_t state;
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!",
getpid (), session_index);
clib_spinlock_unlock (&vcm->sessions_lockp);
goto done;
}
is_server = session->is_server;
is_listen = session->is_listen;
is_cut_thru = session->is_cut_thru;
is_vep = session->is_vep;
is_vep_session = session->is_vep_session;
next_sid = session->vep.next_sid;
vep_idx = session->vep.vep_idx;
state = session->state;
clib_spinlock_unlock (&vcm->sessions_lockp);
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sid %d", getpid (), session_index);
if (is_vep)
{
while (next_sid != ~0)
{
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)", getpid (), vep_idx, next_sid,
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!",
getpid (), session_index);
clib_spinlock_unlock (&vcm->sessions_lockp);
goto done;
}
next_sid = session->vep.next_sid;
clib_spinlock_unlock (&vcm->sessions_lockp);
}
}
else
{
if (is_vep_session)
{
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)", getpid (), vep_idx, session_index,
vppcom_retval_str (rv), rv);
}
if (is_cut_thru && is_server && (state == STATE_ACCEPT))
{
rv = vppcom_session_unbind_cut_thru (session, session_index);
if ((VPPCOM_DEBUG > 0) && (rv < 0))
clib_warning ("[%d] unbind cut-thru (session %d) failed, "
"rv = %s (%d)",
getpid (), session_index,
vppcom_retval_str (rv), rv);
}
else if (is_server && is_listen)
{
rv = vppcom_session_unbind (session_index);
if ((VPPCOM_DEBUG > 0) && (rv < 0))
clib_warning ("[%d] unbind (session %d) failed, rv = %s (%d)",
getpid (), session_index,
vppcom_retval_str (rv), rv);
}
else if (state == STATE_CONNECT)
if (vppcom_session_disconnect (session_index))
goto done;
}
clib_spinlock_lock (&vcm->sessions_lockp);
pool_put_index (vcm->sessions, session_index);
clib_spinlock_unlock (&vcm->sessions_lockp);
done:
return rv;
}
int
vppcom_session_bind (uint32_t session_index, vppcom_endpt_t * ep)
{
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!",
getpid (), 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!",
getpid (), session_index);
return VPPCOM_EBADFD;
}
session->vrf = ep->vrf;
session->lcl_addr.is_ip4 = ep->is_ip4;
session->lcl_addr.ip46 = to_ip46 (!ep->is_ip4, ep->ip);
session->lcl_port = ep->port;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sid %d, bound to lcl address %U lcl port %u",
getpid (), session_index, format_ip46_address,
&session->lcl_addr.ip46, session->lcl_addr.is_ip4,
clib_net_to_host_u16 (session->lcl_port));
clib_spinlock_unlock (&vcm->sessions_lockp);
return VPPCOM_OK;
}
int
vppcom_session_listen (uint32_t listen_session_index, uint32_t q_len)
{
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!",
getpid (), 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!",
getpid (), listen_session_index);
return VPPCOM_EBADFD;
}
if (listen_session->is_listen)
{
clib_spinlock_unlock (&vcm->sessions_lockp);
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sid (%u) is already in listen state!",
getpid (), listen_session_index);
return VPPCOM_OK;
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sid %d", getpid (), 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)",
getpid (), 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!",
getpid (), 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,
uint32_t flags, double wait_for_time)
{
session_t *listen_session = 0;
session_t *client_session = 0;
u32 client_session_index = ~0;
int rv;
f64 wait_for;
char *cut_thru_str;
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!",
getpid (), 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!",
getpid (), 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",
getpid (),
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)", getpid (),
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)",
getpid (), 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);
client_session->is_nonblocking = (flags & O_NONBLOCK) ? 1 : 0;
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] Got a request: client sid %d, flags %d, "
" is_nonblocking %u", getpid (), client_session_index,
flags, client_session->is_nonblocking);
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->peer_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));
if (client_session->is_server && client_session->is_cut_thru)
{
static svm_fifo_segment_create_args_t _a;
svm_fifo_segment_create_args_t *a = &_a;
svm_fifo_segment_private_t *seg;
cut_thru_str = "cut-thru ";
/* Create the segment */
memset (a, 0, sizeof (*a));
a->segment_name = (char *)
format ((u8 *) a->segment_name, "%d:segment%d%c",
getpid (), 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",
getpid (), a->segment_name);
vec_reset_length (a->new_segment_indices);
rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
vppcom_send_connect_session_reply (client_session, rv);
clib_spinlock_unlock (&vcm->sessions_lockp);
return VPPCOM_ENOMEM;
}
client_session->segment_name = vec_dup ((u8 *) a->segment_name);
client_session->sm_seg_index = a->new_segment_indices[0];
vec_free (a->new_segment_indices);
seg = svm_fifo_segment_get_segment (client_session->sm_seg_index);
client_session->server_rx_fifo =
svm_fifo_segment_alloc_fifo (seg, vcm->cfg.rx_fifo_size,
FIFO_SEGMENT_RX_FREELIST);
if (PREDICT_FALSE (!client_session->server_rx_fifo))
{
svm_fifo_segment_delete (seg);
clib_warning ("[%d] rx fifo alloc failed, size %ld (0x%lx)",
getpid (), vcm->cfg.rx_fifo_size,
vcm->cfg.rx_fifo_size);
rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
vppcom_send_connect_session_reply (client_session, rv);
clib_spinlock_unlock (&vcm->sessions_lockp);
return VPPCOM_ENOMEM;
}
client_session->server_rx_fifo->master_session_index =
client_session_index;
client_session->server_tx_fifo =
svm_fifo_segment_alloc_fifo (seg, vcm->cfg.tx_fifo_size,
FIFO_SEGMENT_TX_FREELIST);
if (PREDICT_FALSE (!client_session->server_tx_fifo))
{
svm_fifo_segment_delete (seg);
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] tx fifo alloc failed, size %ld (0x%lx)",
getpid (), vcm->cfg.tx_fifo_size,
vcm->cfg.tx_fifo_size);
rv = VNET_API_ERROR_URI_FIFO_CREATE_FAILED;
vppcom_send_connect_session_reply (client_session, rv);
clib_spinlock_unlock (&vcm->sessions_lockp);
return VPPCOM_ENOMEM;
}
client_session->server_tx_fifo->master_session_index =
client_session_index;
if (VPPCOM_DEBUG > 1)
clib_warning ("[%d] created segment '%s': rx_fifo %p, tx_fifo %p",
getpid (), client_session->segment_name,
client_session->server_rx_fifo,
client_session->server_tx_fifo);
#ifdef CUT_THRU_EVENT_QUEUE /* TBD */
{
void *oldheap;
ssvm_shared_header_t *sh = seg->ssvm.sh;
ssvm_lock_non_recursive (sh, 1);
oldheap = ssvm_push_heap (sh);
event_q = client_session->vpp_event_queue =
unix_shared_memory_queue_init (vcm->cfg.event_queue_size,
sizeof (session_fifo_event_t),
getpid (), 0 /* signal not sent */ );
ssvm_pop_heap (oldheap);
ssvm_unlock_non_recursive (sh);
}
#endif
vppcom_send_connect_session_reply (client_session, 0);
}
else
{
cut_thru_str = " ";
vppcom_send_accept_session_reply (client_session->vpp_handle, 0);
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sid %d, accepted %sconnection to peer address "
"%U peer port %u",
getpid (), client_session_index, cut_thru_str,
format_ip46_address, &client_session->peer_addr.ip46,
client_session->peer_addr.is_ip4,
clib_net_to_host_u16 (client_session->peer_port));
clib_spinlock_unlock (&vcm->sessions_lockp);
return (int) client_session_index;
}
int
vppcom_session_connect (uint32_t session_index, vppcom_endpt_t * server_ep)
{
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!",
getpid (), 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!",
getpid (), 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!",
getpid (), 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->peer_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",
getpid (), session_index, ip_str,
clib_net_to_host_u16 (session->peer_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)",
getpid (), vppcom_retval_str (rv), rv);
return rv;
}
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] sid %d connected!", getpid (), session_index);
return VPPCOM_OK;
}
static inline int
vppcom_session_read_internal (uint32_t session_index, void *buf, int n,
u8 peek)
{
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!",
getpid (), 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!",
getpid (), 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!",
getpid (), 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 | EPOLLIN) & session->vep.ev.events) == (EPOLLET | EPOLLIN);
clib_spinlock_unlock (&vcm->sessions_lockp);
do
{
if (peek)
n_read = svm_fifo_peek (rx_fifo, 0, n, buf);
else
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)", getpid (),
session_index, n_read, fifo_str, rx_fifo);
return (n_read <= 0) ? VPPCOM_EAGAIN : n_read;
}
int
vppcom_session_read (uint32_t session_index, void *buf, int n)
{
return (vppcom_session_read_internal (session_index, buf, n, 0));
}
static int
vppcom_session_peek (uint32_t session_index, void *buf, int n)
{
return (vppcom_session_read_internal (session_index, buf, n, 1));
}
static inline int
vppcom_session_read_ready (session_t * session, u32 session_index)
{
svm_fifo_t *rx_fifo = 0;
int ready = 0;
u32 poll_et;
/* 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!",
getpid (), 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!",
getpid (), 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);
}
poll_et =
((EPOLLET | EPOLLIN) & session->vep.ev.events) == (EPOLLET | EPOLLIN);
if (poll_et && (ready == 0))
{
if (VPPCOM_DEBUG > 11)
clib_warning ("[%d] sid %d: current vep.et_mask = 0x%x", getpid (),
session_index, session->vep.et_mask);
session->vep.et_mask |= EPOLLIN;
if (VPPCOM_DEBUG > 11)
clib_warning ("[%d] sid %d: updated vep.et_mask = 0x%x", getpid (),
session_index, session->vep.et_mask);
}
if (session->vep.et_mask && (VPPCOM_DEBUG > 11))
clib_warning ("[%d] sid %d, is_listen %u, peek %s (%p), ready = %d, "
"et_mask 0x%x",
getpid (), session_index, session->is_listen,
session->is_server ? "server_rx_fifo" : "server_tx_fifo",
rx_fifo, ready, session->vep.et_mask);
return ready;
}
int
vppcom_session_write (uint32_t session_index, void *buf, int n)
{
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!",
getpid (), 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!",
getpid (), 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!",
getpid (), 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 | EPOLLOUT) & session->vep.ev.events) ==
(EPOLLET | EPOLLOUT));
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!",
getpid (), 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)", getpid (),
session_index, fifo_str, tx_fifo);
else
clib_warning ("[%d] sid %d, wrote %d bytes to %s (%p)", getpid (),
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)
{
svm_fifo_t *tx_fifo;
char *fifo_str;
int ready;
u32 poll_et;
/* 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!",
getpid (), 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!",
getpid (), 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", getpid (),
session_index, fifo_str, tx_fifo, ready);
poll_et = (((EPOLLET | EPOLLOUT) & session->vep.ev.events) ==
(EPOLLET | EPOLLOUT));
if (poll_et && (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)
{
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.", getpid (),
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.", getpid (),
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.", getpid (),
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 = vep_idx;
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 ("[%d] ERROR: Invalid vep_idx (%u)!", getpid (), vep_idx);
goto done;
}
if (PREDICT_FALSE (!session->is_vep))
{
clib_warning ("[%d] ERROR: vep_idx (%u) is not a vep!", getpid (),
vep_idx);
goto done;
}
clib_warning ("[%d] 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", getpid (),
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 (sid != ~0)
{
rv = vppcom_session_at_index (sid, &session);
if (PREDICT_FALSE (rv))
{
clib_warning ("[%d] ERROR: Invalid sid (%u)!", getpid (), sid);
goto done;
}
if (PREDICT_FALSE (session->is_vep))
clib_warning ("[%d] ERROR: sid (%u) is a vep!",
getpid (), vep_idx);
else if (PREDICT_FALSE (!session->is_vep_session))
{
clib_warning ("[%d] ERROR: session (%u) is not a vep session!",
getpid (), sid);
goto done;
}
if (PREDICT_FALSE (session->vep.vep_idx != vep_idx))
clib_warning ("[%d] ERROR: session (%u) vep_idx (%u) != "
"vep_idx (%u)!", getpid (),
sid, session->vep.vep_idx, vep_idx);
if (session->is_vep_session)
{
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);
}
}
}
while (sid != ~0);
done:
clib_warning ("[%d] vep_idx (%u): Dump complete!\n", getpid (), vep_idx);
}
int
vppcom_epoll_create (void)
{
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 ("[%d] Created vep_idx %u!", getpid (), vep_idx);
return (vep_idx);
}
int
vppcom_epoll_ctl (uint32_t vep_idx, int op, uint32_t session_index,
struct epoll_event *event)
{
session_t *vep_session;
session_t *session;
int rv;
if (vep_idx == session_index)
{
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] ERROR: vep_idx == session_index (%u)!",
getpid (), 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 ("[%d] ERROR: Invalid vep_idx (%u)!", vep_idx);
goto done;
}
if (PREDICT_FALSE (!vep_session->is_vep))
{
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] ERROR: vep_idx (%u) is not a vep!",
getpid (), 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 ("[%d] ERROR: Invalid session_index (%u)!",
getpid (), 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 ("[%d] ERROR: EPOLL_CTL_ADD: NULL pointer to "
"epoll_event structure!", getpid ());
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 ("[%d] ERROR: EPOLL_CTL_ADD: Invalid "
"vep.next_sid (%u) on vep_idx (%u)!",
getpid (), 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 ("[%d] EPOLL_CTL_ADD: vep_idx %u, sid %u, events 0x%x,"
" data 0x%llx!", getpid (), vep_idx, session_index,
event->events, event->data.u64);
break;
case EPOLL_CTL_MOD:
if (PREDICT_FALSE (!event))
{
clib_warning ("[%d] ERROR: EPOLL_CTL_MOD: NULL pointer to "
"epoll_event structure!", getpid ());
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 ("[%d] ERROR: EPOLL_CTL_MOD: session (%u) "
"is not a vep session!",
getpid (), session_index);
else
clib_warning ("[%d] ERROR: EPOLL_CTL_MOD: session (%u) "
"vep_idx (%u) != vep_idx (%u)!",
getpid (), 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 ("[%d] EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
" data 0x%llx!", getpid (), 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 ("[%d] ERROR: EPOLL_CTL_DEL: session (%u) "
"is not a vep session!",
getpid (), session_index);
else
clib_warning ("[%d] ERROR: EPOLL_CTL_DEL: session (%u) "
"vep_idx (%u) != vep_idx (%u)!",
getpid (), 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 ("[%d] ERROR: EPOLL_CTL_DEL: Invalid "
"vep.prev_sid (%u) on sid (%u)!",
getpid (), 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 ("[%d] ERROR: EPOLL_CTL_DEL: Invalid "
"vep.next_sid (%u) on sid (%u)!",
getpid (), 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 ("[%d] EPOLL_CTL_DEL: vep_idx %u, sid %u!",
getpid (), vep_idx, session_index);
break;
default:
clib_warning ("[%d] ERROR: Invalid operation (%d)!", getpid (), op);
rv = VPPCOM_EINVAL;
}
vep_verify_epoll_chain (vep_idx);
done:
clib_spinlock_unlock (&vcm->sessions_lockp);
return rv;
}
int
vppcom_epoll_wait (uint32_t vep_idx, struct epoll_event *events,
int maxevents, double wait_for_time)
{
session_t *vep_session;
int rv;
f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time;
u32 keep_trying = 1;
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 ("[%d] ERROR: Invalid maxevents (%d)!",
getpid (), maxevents);
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 ("[%d] ERROR: vep_idx (%u) is not a vep!",
getpid (), vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
if (PREDICT_FALSE (vep_next_sid == ~0))
{
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] WARNING: vep_idx (%u) is empty!",
getpid (), 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 ("[%d] ERROR: sid (%u) is a vep!",
getpid (), vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
if (PREDICT_FALSE (!is_vep_session))
{
if (VPPCOM_DEBUG > 0)
clib_warning ("[%d] ERROR: session (%u) is not "
"a vep session!", getpid (), sid);
rv = VPPCOM_EINVAL;
goto done;
}
if (PREDICT_FALSE (session_vep_idx != vep_idx))
{
clib_warning ("[%d] ERROR: session (%u) "
"vep_idx (%u) != vep_idx (%u)!",
getpid (), sid, session->vep.vep_idx, vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
add_event = clear_et_mask = 0;
if (EPOLLIN & session_events)
{
VCL_LOCK_AND_GET_SESSION (sid, &session);
ready = vppcom_session_read_ready (session, sid);
clib_spinlock_unlock (&vcm->sessions_lockp);
if ((ready > 0) && (EPOLLIN & et_mask))
{
add_event = 1;
events[num_ev].events |= EPOLLIN;
if (((EPOLLET | EPOLLIN) & session_events) ==
(EPOLLET | EPOLLIN))
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)
{
VCL_LOCK_AND_GET_SESSION (sid, &session);
ready = vppcom_session_write_ready (session, sid);
clib_spinlock_unlock (&vcm->sessions_lockp);
if ((ready > 0) && (EPOLLOUT & et_mask))
{
add_event = 1;
events[num_ev].events |= EPOLLOUT;
if (((EPOLLET | EPOLLOUT) & session_events) ==
(EPOLLET | EPOLLOUT))
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;
}
}
if (wait_for_time != -1)
keep_trying = (clib_time_now (&vcm->clib_time) <= timeout) ? 1 : 0;
}
while ((num_ev == 0) && keep_trying);
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)
{
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 > 2)
clib_warning ("[%d] VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
getpid (), rv);
break;
case VPPCOM_ATTR_GET_NWRITE:
rv = vppcom_session_write_ready (session, session_index);
if (VPPCOM_DEBUG > 2)
clib_warning ("[%d] VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
getpid (), session_index, rv);
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 > 2)
clib_warning ("[%d] VPPCOM_ATTR_GET_FLAGS: sid %u, "
"flags = 0x%08x, is_nonblocking = %u", getpid (),
session_index, *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 > 2)
clib_warning ("[%d] VPPCOM_ATTR_SET_FLAGS: sid %u, "
"flags = 0x%08x, is_nonblocking = %u",
getpid (), *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->peer_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 > 1)
clib_warning ("[%d] VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = "
"%u, addr = %U, port %u", getpid (),
session_index, ep->is_ip4, format_ip46_address,
&session->peer_addr.ip46, ep->is_ip4,
clib_net_to_host_u16 (ep->port));
}
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->lcl_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 > 1)
clib_warning ("[%d] VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = "
"%u, addr = %U port %d", getpid (),
session_index, ep->is_ip4, format_ip46_address,
&session->lcl_addr.ip46, ep->is_ip4,
clib_net_to_host_u16 (ep->port));
}
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;
}
int
vppcom_session_recvfrom (uint32_t session_index, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
int rv = VPPCOM_OK;
session_t *session = 0;
if (ep)
{
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!",
getpid (), session_index);
rv = VPPCOM_EBADFD;
clib_spinlock_unlock (&vcm->sessions_lockp);
goto done;
}
ep->vrf = session->vrf;
ep->is_ip4 = session->peer_addr.is_ip4;
ep->port = session->peer_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));
clib_spinlock_unlock (&vcm->sessions_lockp);
}
if (flags == 0)
rv = vppcom_session_read (session_index, buffer, buflen);
else if (flags & MSG_PEEK)
rv = vppcom_session_peek (session_index, buffer, buflen);
else
{
clib_warning ("[%d] Unsupport flags for recvfrom %d", getpid (), flags);
rv = VPPCOM_EAFNOSUPPORT;
}
done:
return rv;
}
int
vppcom_session_sendto (uint32_t session_index, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
if (!buffer)
return VPPCOM_EINVAL;
if (ep)
{
// TBD
return VPPCOM_EINVAL;
}
if (flags)
{
// TBD check the flags and do the right thing
if (VPPCOM_DEBUG > 2)
clib_warning ("[%d] handling flags 0x%u (%d) not implemented yet.",
getpid (), flags, flags);
}
return (vppcom_session_write (session_index, buffer, buflen));
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/