diff options
Diffstat (limited to 'vlib-api/vlibsocket')
| -rw-r--r-- | vlib-api/vlibsocket/api.h | 79 | ||||
| -rw-r--r-- | vlib-api/vlibsocket/sock_test.c | 144 | ||||
| -rw-r--r-- | vlib-api/vlibsocket/sockclnt.api | 50 | ||||
| -rw-r--r-- | vlib-api/vlibsocket/sockclnt_vlib.c | 192 | ||||
| -rw-r--r-- | vlib-api/vlibsocket/socksvr_vlib.c | 646 | ||||
| -rw-r--r-- | vlib-api/vlibsocket/vl_socket_api_h.h | 25 | ||||
| -rw-r--r-- | vlib-api/vlibsocket/vl_socket_msg_enum.h | 33 |
7 files changed, 1169 insertions, 0 deletions
diff --git a/vlib-api/vlibsocket/api.h b/vlib-api/vlibsocket/api.h new file mode 100644 index 00000000000..3477f9560c9 --- /dev/null +++ b/vlib-api/vlibsocket/api.h @@ -0,0 +1,79 @@ +/* + *------------------------------------------------------------------ + * api.h + * + * Copyright (c) 2009 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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. + *------------------------------------------------------------------ + */ + +#ifndef included_vlibsocket_api_h +#define included_vlibsocket_api_h + +#include <vlibapi/api.h> + +typedef struct { + /* Server port number */ + int portno; + + /* By default, localhost... */ + u32 bind_address; + + /* + * (listen, server, client) registrations. Shared memory + * registrations are in shared memory + */ + vl_api_registration_t *registration_pool; + /* + * Chain-drag variables, so message API handlers + * (generally) don't know whether they're talking to a socket + * or to a shared-memory connection. + */ + vl_api_registration_t *current_rp; + unix_file_t *current_uf; + /* One input buffer, shared across all sockets */ + i8 *input_buffer; +} socket_main_t; + +socket_main_t socket_main; + +void socksvr_add_pending_output (struct unix_file * uf, + struct vl_api_registration_ * cf, + u8 * buffer, uword buffer_bytes); + +#define SOCKSVR_DEFAULT_PORT 32741 /* whatever */ + +void vl_free_socket_registration_index (u32 pool_index); +void vl_socket_process_msg (struct unix_file *uf, + struct vl_api_registration_ *rp, i8 *input_v); +clib_error_t * vl_socket_read_ready (struct unix_file * uf); +void vl_socket_add_pending_output (struct unix_file * uf, + struct vl_api_registration_ * rp, + u8 * buffer, + uword buffer_bytes); +clib_error_t * vl_socket_write_ready (struct unix_file * uf); +void vl_socket_api_send (vl_api_registration_t *rp, u8 *elem) ; +void vl_socket_api_send_with_data (vl_api_registration_t *rp, + u8 *elem, u8 *data_vector); +void vl_socket_api_send_with_length (vl_api_registration_t *rp, + u8 *elem, u32 msg_length); +void vl_socket_api_send_with_length_no_free (vl_api_registration_t *rp, + u8 *elem, u32 msg_length); +u32 sockclnt_open_index (char *client_name, char *hostname, int port); +void sockclnt_close_index (u32 index); +void vl_client_msg_api_send (vl_api_registration_t *cm, u8 *elem); +vl_api_registration_t *sockclnt_get_registration (u32 index); +void socksvr_set_port (u16 port); +void socksvr_set_bind_address (u32 bind_address); + +#endif /* included_vlibsocket_api_h */ diff --git a/vlib-api/vlibsocket/sock_test.c b/vlib-api/vlibsocket/sock_test.c new file mode 100644 index 00000000000..cfae32f68fa --- /dev/null +++ b/vlib-api/vlibsocket/sock_test.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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 <string.h> +#include <strings.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <netdb.h> + +#define SOCKCLNT_SERVER_PORT 32741 /* whatever */ + +typedef signed char i8; +typedef signed short i16; +typedef signed int i32; +typedef signed long long i64; +typedef unsigned char u8; +typedef unsigned short u16; +typedef unsigned int u32; +typedef unsigned long long u64; +typedef unsigned long uword; + +#define VL_API_PACKED(x) x __attribute__ ((packed)) + +typedef VL_API_PACKED(struct _vl_api_sockclnt_create { + u16 _vl_msg_id; + u8 name[64]; + u32 context; +}) vl_api_sockclnt_create_t; + +typedef VL_API_PACKED(struct _vl_api_sockclnt_create_reply { + u16 _vl_msg_id; + i32 response; + u64 handle; + u32 index; + u32 context; +}) vl_api_sockclnt_create_reply_t; + +typedef VL_API_PACKED(struct _vl_api_sockclnt_delete { + u16 _vl_msg_id; + u32 index; + u64 handle; +}) vl_api_sockclnt_delete_t; + +typedef VL_API_PACKED(struct _vl_api_sockclnt_delete_reply { + u16 _vl_msg_id; + i32 response; + u64 handle; +}) vl_api_sockclnt_delete_reply_t; + +void error(char *msg) +{ + perror(msg); + exit(0); +} + +int main(int argc, char *argv[]) +{ + int sockfd, portno, n; + struct sockaddr_in serv_addr; + struct hostent *server; + char buffer[256]; + int i; + u32 nbytes; + vl_api_sockclnt_create_t *mp; + vl_api_sockclnt_create_reply_t *rp; + char *rdptr; + int total_bytes; + + for (i = 0; i < 1; i++) { + portno = SOCKCLNT_SERVER_PORT; + sockfd = socket(AF_INET, SOCK_STREAM, 0); + if (sockfd < 0) + error("ERROR opening socket"); + server = gethostbyname("localhost"); + if (server == NULL) { + fprintf(stderr,"ERROR, no such host\n"); + exit(0); + } + bzero((char *) &serv_addr, sizeof(serv_addr)); + serv_addr.sin_family = AF_INET; + bcopy((char *)server->h_addr, + (char *)&serv_addr.sin_addr.s_addr, + server->h_length); + serv_addr.sin_port = htons(portno); + if (connect(sockfd,(const void *)&serv_addr,sizeof(serv_addr)) < 0) + error("ERROR connecting"); + + memset(buffer, 0, sizeof(buffer)); + + mp = (vl_api_sockclnt_create_t *)buffer; + mp->_vl_msg_id = ntohs(8); /* VL_API_SOCKCLNT_CREATE */ + strncpy ((char *) mp->name, "socket-test", sizeof(mp->name)-1); + mp->name[sizeof(mp->name)-1]=0; + mp->context = 0xfeedface; + /* length of the message, including the length itself */ + nbytes = sizeof (*mp) + sizeof (nbytes); + nbytes = ntohl(nbytes); + n = write(sockfd, &nbytes, sizeof(nbytes)); + if (n < 0) + error("ERROR writing len to socket"); + n = write(sockfd, mp, sizeof (*mp)); + if (n < 0) + error("ERROR writing msg to socket"); + + memset(buffer, 0, sizeof (buffer)); + + total_bytes = 0; + rdptr = buffer; + do { + n = read(sockfd,rdptr,sizeof(buffer) - (rdptr - buffer)); + if (n < 0) + error("ERROR reading from socket"); + printf ("read %d bytes\n", n); + total_bytes += n; + rdptr += n; + } while (total_bytes < sizeof (vl_api_sockclnt_create_reply_t) + 4); + + rp = (vl_api_sockclnt_create_reply_t *)(buffer + 4); + /* VL_API_SOCKCLNT_CREATE_REPLY */ + if (ntohs(rp->_vl_msg_id) != 9) { + printf ("WARNING: msg id %d\n", ntohs(rp->_vl_msg_id)); + } + + printf ("response %d, handle 0x%llx, index %d, context 0x%x\n", + ntohl(rp->response), rp->handle, rp->index, rp->context); + close(sockfd); + } + return 0; +} diff --git a/vlib-api/vlibsocket/sockclnt.api b/vlib-api/vlibsocket/sockclnt.api new file mode 100644 index 00000000000..e0a7505fe87 --- /dev/null +++ b/vlib-api/vlibsocket/sockclnt.api @@ -0,0 +1,50 @@ +/* Hey Emacs use -*- mode: C -*- */ + +/* + *------------------------------------------------------------------ + * sockclnt.api - API message(s) to hook up clients, pass traffic + * to client processes via TCP sockets + * + * Copyright (c) 2009 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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. + *------------------------------------------------------------------ + */ + +/* + * Create a socket client registration + */ +define sockclnt_create { + u8 name[64]; /* for show, find by name, whatever */ + u32 context; /* opaque value to be returned in the reply */ +}; + +define sockclnt_create_reply { + i32 response; /* Non-negative = success */ + u64 handle; /* handle by which vlib knows this client */ + u32 index; /* index, used e.g. by API trace replay */ + u32 context; /* opaque value from the create request */ +}; + +/* + * Delete a client registration + */ +define sockclnt_delete { + u32 index; /* index, used e.g. by API trace replay */ + u64 handle; /* handle by which vlib knows this client */ +}; + +define sockclnt_delete_reply { + i32 response; /* Non-negative = success */ + u64 handle; /* in case the client wonders */ +}; + diff --git a/vlib-api/vlibsocket/sockclnt_vlib.c b/vlib-api/vlibsocket/sockclnt_vlib.c new file mode 100644 index 00000000000..8ea4f3083a3 --- /dev/null +++ b/vlib-api/vlibsocket/sockclnt_vlib.c @@ -0,0 +1,192 @@ +/* + *------------------------------------------------------------------ + * sockclnt_vlib.c + * + * Copyright (c) 2009 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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 <sys/types.h> +#include <sys/socket.h> +#include <unistd.h> +#include <netinet/in.h> +#include <sys/ioctl.h> +#include <vppinfra/byte_order.h> +#include <netdb.h> + +#include <fcntl.h> +#include <sys/stat.h> + +#include <vlibmemory/api.h> +#include <vlibsocket/api.h> + +#include <vlibsocket/vl_socket_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <vlibsocket/vl_socket_api_h.h> +#undef vl_typedefs + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <vlibsocket/vl_socket_api_h.h> +#undef vl_printfun + +/* instantiate all the endian swap functions we know about */ +#define vl_endianfun +#include <vlibsocket/vl_socket_api_h.h> +#undef vl_endianfun + +static void vl_api_sockclnt_create_reply_t_handler ( + vl_api_sockclnt_create_reply_t *mp) +{ + vl_api_registration_t *rp = socket_main.current_rp; + + rp->server_handle = mp->handle; + rp->server_index = mp->index; +} + +static void vl_api_sockclnt_delete_reply_t_handler ( + vl_api_sockclnt_delete_reply_t *mp) +{ + unix_main_t *um = &unix_main; + unix_file_t *uf = socket_main.current_uf; + vl_api_registration_t *rp = socket_main.current_rp; + + unix_file_del (um, uf); + vl_free_socket_registration_index (rp->vl_api_registration_pool_index); +} + +u32 sockclnt_open_index (char *client_name, char *hostname, int port) +{ + vl_api_registration_t * rp; + unix_main_t * um = &unix_main; + unix_file_t template = {0}; + int sockfd; + int one = 1; + int rv; + struct sockaddr_in serv_addr; + struct hostent *server; + vl_api_sockclnt_create_t *mp; + char my_hostname[64]; + + server = gethostbyname(hostname); + if (server == NULL) { + clib_warning("Couldn't translate server name %s", hostname); + return ~0; + } + + /* Set up non-blocking server socket on CLIENT_API_SERVER_PORT */ + sockfd = socket(AF_INET, SOCK_STREAM, 0); + + if (sockfd < 0) { + clib_unix_warning ("socket"); + return ~0; + } + + bzero((char *) &serv_addr, sizeof(serv_addr)); + serv_addr.sin_family = AF_INET; + bcopy((char *)server->h_addr, + (char *)&serv_addr.sin_addr.s_addr, + server->h_length); + serv_addr.sin_port = htons(port); + + if (connect(sockfd,(const void *)&serv_addr,sizeof(serv_addr)) < 0) { + clib_unix_warning("Connect failure to (%s, %d)", + hostname, port); + return ~0; + } + + rv = ioctl (sockfd, FIONBIO, &one); + if (rv < 0) { + clib_unix_warning ("FIONBIO"); + return ~0; + } + + pool_get (socket_main.registration_pool, rp); + memset(rp, 0, sizeof(*rp)); + rp->registration_type = REGISTRATION_TYPE_SOCKET_CLIENT; + rp->vl_api_registration_pool_index = rp - socket_main.registration_pool; + + template.read_function = vl_socket_read_ready; + template.write_function = vl_socket_write_ready; + template.file_descriptor = sockfd; + template.private_data = rp - socket_main.registration_pool; + + rp->unix_file_index = unix_file_add (um, &template); + rp->name = format(0, "%s:%d", hostname, port); + + mp = vl_msg_api_alloc (sizeof (*mp)); + mp->_vl_msg_id = ntohs(VL_API_SOCKCLNT_CREATE); + mp->context = rp - socket_main.registration_pool; + + if (gethostname(my_hostname, sizeof (my_hostname)) < 0) { + clib_unix_warning("gethostname"); + strncpy (my_hostname, "unknown!", sizeof(my_hostname)-1); + } + strncpy ((char *)mp->name, my_hostname, sizeof (mp->name)-1); + + vl_msg_api_send (rp, (u8 *)mp); + return rp - socket_main.registration_pool; +} + +void sockclnt_close_index (u32 index) +{ + vl_api_sockclnt_delete_t *mp; + vl_api_registration_t *rp; + + /* Don't crash / assert if fed garbage */ + if (pool_is_free_index (socket_main.registration_pool, index)) { + clib_warning ("registration_pool index %d already free", index); + return; + } + rp = pool_elt_at_index(socket_main.registration_pool, index); + + mp = vl_msg_api_alloc (sizeof (*mp)); + mp->_vl_msg_id = ntohs(VL_API_SOCKCLNT_DELETE); + mp->handle = rp->server_handle; + mp->index = rp->server_index; + vl_msg_api_send (rp, (u8 *)mp); +} + +vl_api_registration_t *sockclnt_get_registration (u32 index) +{ + return pool_elt_at_index (socket_main.registration_pool, index); +} + +/* + * Both rx and tx msgs MUST be initialized, or we'll have + * precisely no idea how many bytes to write into the API trace... + */ +#define foreach_sockclnt_api_msg \ +_(SOCKCLNT_CREATE_REPLY, sockclnt_create_reply) \ +_(SOCKCLNT_DELETE_REPLY, sockclnt_delete_reply) + + +static clib_error_t * +sockclnt_vlib_api_init (vlib_main_t *vm) +{ +#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_sockclnt_api_msg; +#undef _ + return 0; +} + +VLIB_API_INIT_FUNCTION(sockclnt_vlib_api_init); diff --git a/vlib-api/vlibsocket/socksvr_vlib.c b/vlib-api/vlibsocket/socksvr_vlib.c new file mode 100644 index 00000000000..91dff22f631 --- /dev/null +++ b/vlib-api/vlibsocket/socksvr_vlib.c @@ -0,0 +1,646 @@ +/* + *------------------------------------------------------------------ + * socksvr_vlib.c + * + * Copyright (c) 2009 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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 <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> +#include <sys/ioctl.h> +#include <vppinfra/byte_order.h> + +#include <fcntl.h> +#include <sys/stat.h> + +#include <vlibsocket/api.h> +#include <vlibmemory/api.h> + +#include <vlibsocket/vl_socket_msg_enum.h> /* enumerate all vlib messages */ + +#define vl_typedefs /* define message structures */ +#include <vlibsocket/vl_socket_api_h.h> +#undef vl_typedefs + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <vlibsocket/vl_socket_api_h.h> +#undef vl_printfun + +/* instantiate all the endian swap functions we know about */ +#define vl_endianfun +#include <vlibsocket/vl_socket_api_h.h> +#undef vl_endianfun + +socket_main_t socket_main; + +void dump_socket_clients (vlib_main_t *vm, api_main_t *am) +{ + vl_api_registration_t *reg; + socket_main_t *sm = &socket_main; + unix_main_t *um = &unix_main; + unix_file_t *f; + + /* + * Must have at least one active client, not counting the + * REGISTRATION_TYPE_SOCKET_LISTEN bind/accept socket + */ + if (pool_elts (sm->registration_pool) < 2) + return; + + vlib_cli_output (vm, "TCP socket clients"); + vlib_cli_output (vm, "%16s %8s", "Name", "Fildesc"); + pool_foreach (reg, sm->registration_pool, + ({ + if (reg->registration_type == REGISTRATION_TYPE_SOCKET_SERVER) { + f = pool_elt_at_index (um->file_pool, reg->unix_file_index); + vlib_cli_output (vm, "%16s %8d", + reg->name, f->file_descriptor); + } + })); +} + +void +vl_socket_api_send (vl_api_registration_t *rp, u8 *elem) +{ + u32 nbytes = 4; /* for the length... */ + u16 msg_id = ntohs(*(u16 *)elem); + u32 msg_length; + u32 tmp; + api_main_t *am = &api_main; + + ASSERT(rp->registration_type > REGISTRATION_TYPE_SHMEM); + + if (msg_id >= vec_len(am->api_trace_cfg)) { + clib_warning("id out of range: %d", msg_id); + vl_msg_api_free((void *)elem); + return; + } + + msg_length = am->api_trace_cfg[msg_id].size; + nbytes += msg_length; + tmp = clib_host_to_net_u32 (nbytes); + + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + (u8 *) &tmp, + sizeof(tmp)); + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + elem, msg_length); + vl_msg_api_free((void *)elem); +} + +void vl_socket_api_send_with_data (vl_api_registration_t *rp, + u8 *elem, u8 *data_vector) +{ + u32 nbytes = 4; /* for the length... */ + u16 msg_id = ntohs(*(u16 *)elem); + u32 msg_length; + u32 tmp; + api_main_t *am = &api_main; + + ASSERT(rp->registration_type > REGISTRATION_TYPE_SHMEM); + + if (msg_id >= vec_len(am->api_trace_cfg)) { + clib_warning("id out of range: %d", msg_id); + vec_free(data_vector); + vl_msg_api_free((void *)elem); + return; + } + + msg_length = am->api_trace_cfg[msg_id].size; + nbytes += msg_length; + nbytes += vec_len(data_vector); + + /* Length in network byte order */ + tmp = clib_host_to_net_u32(nbytes); + + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + (u8 *) &tmp, + sizeof(tmp)); + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + elem, msg_length); + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + data_vector, vec_len(data_vector)); + vl_msg_api_free((void *)elem); +} + +static inline void +vl_socket_api_send_with_length_internal (vl_api_registration_t *rp, + u8 *elem, u32 msg_length, int free) +{ + u32 nbytes = 4; /* for the length... */ + u16 msg_id = ntohs(*(u16 *)elem); + u32 tmp; + api_main_t *am = &api_main; + + ASSERT(rp->registration_type > REGISTRATION_TYPE_SHMEM); + + if (msg_id >= vec_len(am->api_trace_cfg)) { + clib_warning("id out of range: %d", msg_id); + if (free) + vl_msg_api_free((void *)elem); + return; + } + + nbytes += msg_length; + + /* Length in network byte order */ + tmp = clib_host_to_net_u32(nbytes); + + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + (u8 *) &tmp, + sizeof(tmp)); + vl_socket_add_pending_output (rp->unix_file_index + + unix_main.file_pool, + rp->vl_api_registration_pool_index + + socket_main.registration_pool, + elem, msg_length); + if (free) + vl_msg_api_free((void *)elem); +} + +void vl_socket_api_send_with_length (vl_api_registration_t *rp, + u8 *elem, u32 msg_length) +{ + vl_socket_api_send_with_length_internal(rp,elem,msg_length, 1 /* free */); +} + +void vl_socket_api_send_with_length_no_free (vl_api_registration_t *rp, + u8 *elem, u32 msg_length) +{ + vl_socket_api_send_with_length_internal(rp,elem,msg_length, 0 /* free */); +} + +void vl_free_socket_registration_index (u32 pool_index) +{ + vl_api_registration_t *rp; + if (pool_is_free_index (socket_main.registration_pool, pool_index)) { + clib_warning ("main pool index %d already free", pool_index); + return; + } + rp = pool_elt_at_index (socket_main.registration_pool, pool_index); + + ASSERT(rp->registration_type != REGISTRATION_TYPE_FREE); + vec_free (rp->name); + vec_free (rp->unprocessed_input); + vec_free (rp->output_vector); + rp->registration_type = REGISTRATION_TYPE_FREE; + pool_put (socket_main.registration_pool, rp); +} + +static inline void +socket_process_msg (unix_file_t *uf, vl_api_registration_t *rp, i8 *input_v) +{ + u8 *the_msg = (u8 *)(input_v+sizeof(u32)); + socket_main.current_uf = uf; + socket_main.current_rp = rp; + vl_msg_api_socket_handler (the_msg); + socket_main.current_uf = 0; + socket_main.current_rp = 0; +} + +clib_error_t * vl_socket_read_ready (unix_file_t * uf) +{ + unix_main_t * um = &unix_main; + vl_api_registration_t * rp; + int n; + i8 *msg_buffer=0; + u32 msg_len; + u32 save_input_buffer_length = vec_len(socket_main.input_buffer); + + rp = pool_elt_at_index (socket_main.registration_pool, uf->private_data); + + n = read (uf->file_descriptor, socket_main.input_buffer, + vec_len(socket_main.input_buffer)); + + if (n <= 0 && errno != EAGAIN) { + unix_file_del (um, uf); + + if (!pool_is_free (socket_main.registration_pool, rp)) { + u32 index = rp - socket_main.registration_pool; + vl_free_socket_registration_index (index); + } else { + clib_warning("client index %d already free?", + rp->vl_api_registration_pool_index); + } + return 0; + } + + _vec_len(socket_main.input_buffer) = n; + + /* + * Look for bugs here. This code is tricky because + * data read from a stream socket does honor message + * boundaries. In the case of a long message (>4K bytes) + * we have to do (at least) 2 reads, etc. + */ + do { + if (vec_len(rp->unprocessed_input)) { + vec_append(rp->unprocessed_input, socket_main.input_buffer); + msg_buffer = rp->unprocessed_input; + msg_len = rp->unprocessed_msg_length; + } else { + msg_buffer = socket_main.input_buffer; + msg_len = 0; + } + + if (msg_len == 0) { + /* Length may be split across two reads */ + if (vec_len(msg_buffer) < sizeof (u32)) + goto save_and_split; + + /* total length, including msg_len itself, in network byte order */ + msg_len = clib_net_to_host_u32 (*((u32 *)msg_buffer)); + } + + /* Happens if the client sent msg_len == 0 */ + if (msg_len == 0) { + clib_warning ("msg_len == 0"); + goto turf_it; + } + + /* We don't have the entire message yet. */ + if (msg_len > vec_len(msg_buffer)) { + save_and_split: + /* + * if we were using the shared input buffer, + * save the fragment. + */ + if (msg_buffer == socket_main.input_buffer) { + ASSERT(vec_len(rp->unprocessed_input) == 0); + vec_validate (rp->unprocessed_input, vec_len (msg_buffer)-1); + memcpy (rp->unprocessed_input, msg_buffer, vec_len(msg_buffer)); + _vec_len (rp->unprocessed_input) = vec_len (msg_buffer); + } + _vec_len(socket_main.input_buffer) = save_input_buffer_length; + rp->unprocessed_msg_length = msg_len; + return 0; + } + + socket_process_msg (uf, rp, msg_buffer); + if (n > msg_len) + vec_delete(msg_buffer, msg_len, 0); + else + _vec_len(msg_buffer) = 0; + n -= msg_len; + msg_len = 0; + rp->unprocessed_msg_length = 0; + } while (n > 0); + +turf_it: + _vec_len(socket_main.input_buffer) = save_input_buffer_length; + + return 0; +} + +void +vl_socket_add_pending_output (unix_file_t * uf, + vl_api_registration_t * rp, + u8 * buffer, + uword buffer_bytes) +{ + unix_main_t * um = &unix_main; + + vec_add (rp->output_vector, buffer, buffer_bytes); + if (vec_len (rp->output_vector) > 0) { + int skip_update = 0 != (uf->flags & UNIX_FILE_DATA_AVAILABLE_TO_WRITE); + uf->flags |= UNIX_FILE_DATA_AVAILABLE_TO_WRITE; + if (! skip_update) + um->file_update (uf, UNIX_FILE_UPDATE_MODIFY); + } +} + +static void +socket_del_pending_output (unix_file_t * uf, + vl_api_registration_t * rp, + uword n_bytes) +{ + unix_main_t * um = &unix_main; + + vec_delete (rp->output_vector, n_bytes, 0); + if (vec_len (rp->output_vector) <= 0) + { + int skip_update = 0 == (uf->flags & UNIX_FILE_DATA_AVAILABLE_TO_WRITE); + uf->flags &= ~UNIX_FILE_DATA_AVAILABLE_TO_WRITE; + if (! skip_update) + um->file_update (uf, UNIX_FILE_UPDATE_MODIFY); + } +} + +clib_error_t * +vl_socket_write_ready (unix_file_t * uf) +{ + unix_main_t * um = &unix_main; + vl_api_registration_t * rp; + int n; + + rp = pool_elt_at_index (socket_main.registration_pool, uf->private_data); + + /* Flush output vector. */ + n = write (uf->file_descriptor, + rp->output_vector, vec_len (rp->output_vector)); + + if (n < 0) { +#if DEBUG > 2 + clib_warning ("write error, close the file...\n"); +#endif + unix_file_del (um, uf); + + vl_free_socket_registration_index (rp - socket_main.registration_pool); + return 0; + } + + else if (n > 0) + socket_del_pending_output (uf, rp, n); + + return 0; +} + +clib_error_t * vl_socket_error_ready (unix_file_t * uf) +{ + vl_api_registration_t * rp; + unix_main_t * um = &unix_main; + + rp = pool_elt_at_index (socket_main.registration_pool, uf->private_data); + unix_file_del (um, uf); + vl_free_socket_registration_index (rp - socket_main.registration_pool); + + return 0; +} + +void socksvr_file_add (unix_main_t *um, int fd) +{ + vl_api_registration_t *rp; + unix_file_t template = {0}; + + pool_get (socket_main.registration_pool, rp); + memset(rp, 0, sizeof(*rp)); + + template.read_function = vl_socket_read_ready; + template.write_function = vl_socket_write_ready; + template.error_function = vl_socket_error_ready; + template.file_descriptor = fd; + template.private_data = rp - socket_main.registration_pool; + + rp->registration_type = REGISTRATION_TYPE_SOCKET_SERVER; + rp->vl_api_registration_pool_index = rp - socket_main.registration_pool; + rp->unix_file_index = unix_file_add (um, &template); +} + +static clib_error_t * socksvr_accept_ready (unix_file_t * uf) +{ + unix_main_t * um = &unix_main; + struct sockaddr_in client_addr; + int client_fd; + int client_len; + + client_len = sizeof(client_addr); + + /* + * Supposedly acquires the non-blocking attrib from the + * server socket. + */ + client_fd = accept (uf->file_descriptor, + (struct sockaddr *)&client_addr, + (socklen_t *)&client_len); + + if (client_fd < 0) + return clib_error_return_unix (0, "socksvr_accept_ready: accept"); + + socksvr_file_add (um, client_fd); + return 0; +} + +static clib_error_t * socksvr_bogus_write (unix_file_t * uf) +{ + clib_warning ("why am I here?"); + return 0; +} + +/* + * vl_api_sockclnt_create_t_handler + */ +void vl_api_sockclnt_create_t_handler (vl_api_sockclnt_create_t *mp) +{ + vl_api_registration_t *regp; + vl_api_sockclnt_create_reply_t *rp; + int rv = 1; + + regp = socket_main.current_rp; + + ASSERT(regp->registration_type == REGISTRATION_TYPE_SOCKET_SERVER); + + regp->name = format(0, "%s%c", mp->name, 0); + + rp = vl_msg_api_alloc(sizeof(*rp)); + rp->_vl_msg_id = htons(VL_API_SOCKCLNT_CREATE_REPLY); + rp->handle = (uword)regp; + rp->index = (uword)regp->vl_api_registration_pool_index; + rp->context = mp->context; + rp->response = htonl(rv); + + vl_msg_api_send (regp, (u8 *)rp); +} + +/* + * vl_api_sockclnt_delete_t_handler + */ +void vl_api_sockclnt_delete_t_handler (vl_api_sockclnt_delete_t *mp) +{ + vl_api_registration_t *regp; + vl_api_sockclnt_delete_reply_t *rp; + + if (!pool_is_free_index(socket_main.registration_pool, mp->index)) { + regp = pool_elt_at_index(socket_main.registration_pool, mp->index); + + rp = vl_msg_api_alloc(sizeof(*rp)); + rp->_vl_msg_id = htons(VL_API_SOCKCLNT_DELETE_REPLY); + rp->handle = mp->handle; + rp->response = htonl(1); + + vl_msg_api_send (regp, (u8 *)rp); + + unix_file_del (&unix_main, + unix_main.file_pool + regp->unix_file_index); + + vl_free_socket_registration_index (mp->index); + } else { + clib_warning("unknown client ID %d", mp->index); + } +} + +#define foreach_vlib_api_msg \ +_(SOCKCLNT_CREATE, sockclnt_create) \ +_(SOCKCLNT_DELETE, sockclnt_delete) + +static clib_error_t *socksvr_api_init (vlib_main_t * vm) +{ + unix_main_t * um = &unix_main; + unix_file_t template = {0}; + int sockfd; + int one = 1; + int rv; + struct sockaddr_in serv_addr; + vl_api_registration_t *rp; + u16 portno; + u32 bind_address; + +#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_vlib_api_msg; +#undef _ + + vec_resize(socket_main.input_buffer, 4096); + + /* Set up non-blocking server socket on CLIENT_API_SERVER_PORT */ + sockfd = socket(AF_INET, SOCK_STREAM, 0); + + if (sockfd < 0) { + return clib_error_return_unix (0, "socket"); + } + + rv = ioctl (sockfd, FIONBIO, &one); + if (rv < 0) { + return clib_error_return_unix (0, "FIONBIO"); + } + + rv = setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); + if (rv < 0) { + return clib_error_return_unix (0, "SO_REUSEADDR"); + } + + bzero((char *) &serv_addr, sizeof(serv_addr)); + serv_addr.sin_family = AF_INET; + + if (socket_main.bind_address) + bind_address = socket_main.bind_address; + else + bind_address = INADDR_LOOPBACK; + + if (socket_main.portno) + portno = socket_main.portno; + else + portno = SOCKSVR_DEFAULT_PORT; + + serv_addr.sin_port = clib_host_to_net_u16 (portno); + serv_addr.sin_addr.s_addr = clib_host_to_net_u32(bind_address); + + if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) { + return clib_error_return_unix (0, "bind"); + } + + rv = listen(sockfd,5); + if (rv < 0) { + return clib_error_return_unix (0, "listen"); + } + + pool_get (socket_main.registration_pool, rp); + memset(rp, 0, sizeof(*rp)); + + rp->registration_type = REGISTRATION_TYPE_SOCKET_LISTEN; + + template.read_function = socksvr_accept_ready; + template.write_function = socksvr_bogus_write; + template.file_descriptor = sockfd; + template.private_data = rp - socket_main.registration_pool; + + rp->unix_file_index = unix_file_add (um, &template); + return 0; +} + +static clib_error_t * +socket_exit (vlib_main_t * vm) +{ + unix_main_t * um = &unix_main; + vl_api_registration_t *rp; + + /* Defensive driving in case something wipes out early */ + if (socket_main.registration_pool) { + u32 index; + pool_foreach (rp, socket_main.registration_pool, ({ + unix_file_del (um, um->file_pool + rp->unix_file_index); + index = rp->vl_api_registration_pool_index; + vl_free_socket_registration_index (index); + })); + } + + return 0; +} + +VLIB_MAIN_LOOP_EXIT_FUNCTION (socket_exit); + +static clib_error_t * +socksvr_config (vlib_main_t * vm, unformat_input_t * input) +{ + int portno; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "port %d", &portno)) { + socket_main.portno = portno; + } else { + return clib_error_return (0, "unknown input '%U'", + format_unformat_error, input); + } + } + return socksvr_api_init (vm); +} + +VLIB_CONFIG_FUNCTION (socksvr_config, "socksvr"); + +/* argument in host byte order */ +void socksvr_set_port (u16 port) +{ + socket_main.portno = port; +} + +/* argument in host byte order */ +void socksvr_set_bind_address (u32 bind_address) +{ + socket_main.bind_address = bind_address; +} + +clib_error_t * +vlibsocket_init (vlib_main_t * vm) +{ + return 0; +} + +VLIB_INIT_FUNCTION (vlibsocket_init); diff --git a/vlib-api/vlibsocket/vl_socket_api_h.h b/vlib-api/vlibsocket/vl_socket_api_h.h new file mode 100644 index 00000000000..7877ba66e1c --- /dev/null +++ b/vlib-api/vlibsocket/vl_socket_api_h.h @@ -0,0 +1,25 @@ +/* + *------------------------------------------------------------------ + * vl_socket_api_h.h - all API headers, in a specific order. + * + * Copyright (c) 2009 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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. + *------------------------------------------------------------------ + */ + +/* + * Add to the bottom of the #include list, or elves will steal your + * keyboard in the middle of the night! + */ +#include <vlibmemory/vl_memory_api_h.h> +#include <vlibsocket/sockclnt.api.h> diff --git a/vlib-api/vlibsocket/vl_socket_msg_enum.h b/vlib-api/vlibsocket/vl_socket_msg_enum.h new file mode 100644 index 00000000000..13786a08e04 --- /dev/null +++ b/vlib-api/vlibsocket/vl_socket_msg_enum.h @@ -0,0 +1,33 @@ +/* + *------------------------------------------------------------------ + * vl_msg_enum.h - Our view of how to number API messages + * Clients have their own view, which has to agree with ours. + * + * Copyright (c) 2009 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * 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. + *------------------------------------------------------------------ + */ + +#ifndef __VL_MSG_ENUM_H__ +#define __VL_MSG_ENUM_H__ + +#include <vppinfra/byte_order.h> + +#define vl_msg_id(n,h) n, +typedef enum { + VL_ILLEGAL_MESSAGE_ID=0, +#include <vlibsocket/vl_socket_api_h.h> +} vl_msg_id_t; +#undef vl_msg_id + +#endif /* __VL_MSG_ENUM_H__ */ |