Allow multiple MPLS output labels to be passed on the CLI - vpp

diff options

author	Neale Ranns <nranns@cisco.com>	2017-08-08 13:07:16 -0700
committer	Florin Coras <florin.coras@gmail.com>	2017-08-09 02:04:32 +0000
commit	f73d0e2ea6bf4e0dc9c69ec4f1d0c7b9b41d2fa3 (patch)
tree	9837612f6ee19e88e73a6e87163e55f44f1aead7 /src/plugins/pppoe
parent	a3a3a9dedd6af147a310fa5830a52f771e1448bb (diff)

Allow multiple MPLS output labels to be passed on the CLI

Change-Id: Ib5af105e32b6b0df86923e189ab6bf6ee59de5b9 Signed-off-by: Neale Ranns <nranns@cisco.com>

Diffstat (limited to 'src/plugins/pppoe')

0 files changed, 0 insertions, 0 deletions

/* * 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. */ /* Copyright (c) 2001, 2002, 2003, 2005 Eliot Dresselhaus Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include <sys/un.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <netdb.h> #include <unistd.h> #include <stdio.h> #include <fcntl.h> #include <string.h> /* strchr */ #include <vppinfra/mem.h> #include <vppinfra/vec.h> #include <vppinfra/socket.h> #include <vppinfra/format.h> #include <vppinfra/error.h> void clib_socket_tx_add_formatted (clib_socket_t * s, char *fmt, ...) { va_list va; va_start (va, fmt); clib_socket_tx_add_va_formatted (s, fmt, &va); va_end (va); } /* Return and bind to an unused port. */ static word find_free_port (word sock) { word port; for (port = IPPORT_USERRESERVED; port < 1 << 16; port++) { struct sockaddr_in a; memset (&a, 0, sizeof (a)); /* Warnings be gone */ a.sin_family = PF_INET; a.sin_addr.s_addr = INADDR_ANY; a.sin_port = htons (port); if (bind (sock, (struct sockaddr *) &a, sizeof (a)) >= 0) break; } return port < 1 << 16 ? port : -1; } /* Convert a config string to a struct sockaddr and length for use with bind or connect. */ static clib_error_t * socket_config (char *config, void *addr, socklen_t * addr_len, u32 ip4_default_address) { clib_error_t *error = 0; if (!config) config = ""; /* Anything that begins with a / is a local PF_LOCAL socket. */ if (config[0] == '/') { struct sockaddr_un *su = addr; su->sun_family = PF_LOCAL; clib_memcpy (&su->sun_path, config, clib_min (sizeof (su->sun_path), 1 + strlen (config))); *addr_len = sizeof (su[0]); } /* Hostname or hostname:port or port. */ else { char *host_name; int port = -1; struct sockaddr_in *sa = addr; host_name = 0; port = -1; if (config[0] != 0) { unformat_input_t i; unformat_init_string (&i, config, strlen (config)); if (unformat (&i, "%s:%d", &host_name, &port) || unformat (&i, "%s:0x%x", &host_name, &port)) ; else if (unformat (&i, "%s", &host_name)) ; else error = clib_error_return (0, "unknown input `%U'", format_unformat_error, &i); unformat_free (&i); if (error) goto done; } sa->sin_family = PF_INET; *addr_len = sizeof (sa[0]); if (port != -1) sa->sin_port = htons (port); else sa->sin_port = 0; if (host_name) { struct in_addr host_addr; /* Recognize localhost to avoid host lookup in most common cast. */ if (!strcmp (host_name, "localhost")) sa->sin_addr.s_addr = htonl (INADDR_LOOPBACK); else if (inet_aton (host_name, &host_addr)) sa->sin_addr = host_addr; else if (host_name && strlen (host_name) > 0) { struct hostent *host = gethostbyname (host_name); if (!host) error = clib_error_return (0, "unknown host `%s'", config); else clib_memcpy (&sa->sin_addr.s_addr, host->h_addr_list[0], host->h_length); } else sa->sin_addr.s_addr = htonl (ip4_default_address); vec_free (host_name); if (error) goto done; } } done: return error; } static clib_error_t * default_socket_write (clib_socket_t * s) { clib_error_t *err = 0; word written = 0; word fd = 0; word tx_len; fd = s->fd; /* Map standard input to standard output. Typically, fd is a socket for which read/write both work. */ if (fd == 0) fd = 1; tx_len = vec_len (s->tx_buffer); written = write (fd, s->tx_buffer, tx_len); /* Ignore certain errors. */ if (written < 0 && !unix_error_is_fatal (errno)) written = 0; /* A "real" error occurred. */ if (written < 0) { err = clib_error_return_unix (0, "write %wd bytes", tx_len); vec_free (s->tx_buffer); goto done; } /* Reclaim the transmitted part of the tx buffer on successful writes. */ else if (written > 0) { if (written == tx_len) _vec_len (s->tx_buffer) = 0; else vec_delete (s->tx_buffer, written, 0); } /* If a non-fatal error occurred AND the buffer is full, then we must free it. */ else if (written == 0 && tx_len > 64 * 1024) { vec_free (s->tx_buffer); } done: return err; } static clib_error_t * default_socket_read (clib_socket_t * sock, int n_bytes) { word fd, n_read; u8 *buf; /* RX side of socket is down once end of file is reached. */ if (sock->flags & SOCKET_RX_END_OF_FILE) return 0; fd = sock->fd; n_bytes = clib_max (n_bytes, 4096); vec_add2 (sock->rx_buffer, buf, n_bytes); if ((n_read = read (fd, buf, n_bytes)) < 0) { n_read = 0; /* Ignore certain errors. */ if (!unix_error_is_fatal (errno)) goto non_fatal; return clib_error_return_unix (0, "read %d bytes", n_bytes); } /* Other side closed the socket. */ if (n_read == 0) sock->flags |= SOCKET_RX_END_OF_FILE; non_fatal: _vec_len (sock->rx_buffer) += n_read - n_bytes; return 0; } static clib_error_t * default_socket_close (clib_socket_t * s) { if (close (s->fd) < 0) return clib_error_return_unix (0, "close"); return 0; } static void socket_init_funcs (clib_socket_t * s) { if (!s->write_func) s->write_func = default_socket_write; if (!s->read_func) s->read_func = default_socket_read; if (!s->close_func) s->close_func = default_socket_close; } clib_error_t * clib_socket_init (clib_socket_t * s) { union { struct sockaddr sa; struct sockaddr_un su; } addr; socklen_t addr_len = 0; clib_error_t *error = 0; word port; error = socket_config (s->config, &addr.sa, &addr_len, (s->flags & SOCKET_IS_SERVER ? INADDR_LOOPBACK : INADDR_ANY)); if (error) goto done; socket_init_funcs (s); s->fd = socket (addr.sa.sa_family, SOCK_STREAM, 0); if (s->fd < 0) { error = clib_error_return_unix (0, "socket"); goto done; } port = 0; if (addr.sa.sa_family == PF_INET) port = ((struct sockaddr_in *) &addr)->sin_port; if (s->flags & SOCKET_IS_SERVER) { uword need_bind = 1; if (addr.sa.sa_family == PF_INET) { if (port == 0) { port = find_free_port (s->fd); if (port < 0) { error = clib_error_return (0, "no free port"); goto done; } need_bind = 0; } } if (addr.sa.sa_family == PF_LOCAL) unlink (((struct sockaddr_un *) &addr)->sun_path); /* Make address available for multiple users. */ { int v = 1; if (setsockopt (s->fd, SOL_SOCKET, SO_REUSEADDR, &v, sizeof (v)) < 0) clib_unix_warning ("setsockopt SO_REUSEADDR fails"); } if (need_bind && bind (s->fd, &addr.sa, addr_len) < 0) { error = clib_error_return_unix (0, "bind"); goto done; } if (listen (s->fd, 5) < 0) { error = clib_error_return_unix (0, "listen"); goto done; } } else { if ((s->flags & SOCKET_NON_BLOCKING_CONNECT) && fcntl (s->fd, F_SETFL, O_NONBLOCK) < 0) { error = clib_error_return_unix (0, "fcntl NONBLOCK"); goto done; } if (connect (s->fd, &addr.sa, addr_len) < 0 && !((s->flags & SOCKET_NON_BLOCKING_CONNECT) && errno == EINPROGRESS)) { error = clib_error_return_unix (0, "connect"); goto done; } } return error; done: if (s->fd > 0) close (s->fd); return error; } clib_error_t * clib_socket_accept (clib_socket_t * server, clib_socket_t * client) { clib_error_t *err = 0; socklen_t len = 0; memset (client, 0, sizeof (client[0])); /* Accept the new socket connection. */ client->fd = accept (server->fd, 0, 0); if (client->fd < 0) return clib_error_return_unix (0, "accept"); /* Set the new socket to be non-blocking. */ if (fcntl (client->fd, F_SETFL, O_NONBLOCK) < 0) { err = clib_error_return_unix (0, "fcntl O_NONBLOCK"); goto close_client; } /* Get peer info. */ len = sizeof (client->peer); if (getpeername (client->fd, (struct sockaddr *) &client->peer, &len) < 0) { err = clib_error_return_unix (0, "getpeername"); goto close_client; } client->flags = SOCKET_IS_CLIENT; socket_init_funcs (client); return 0; close_client: close (client->fd); return err; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


context:
space:
mode: