2 * Copyright (c) 2016-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
22 #include <sys/resource.h>
23 #include <netinet/tcp.h>
25 #include <vcl/ldp_socket_wrapper.h>
29 #include <vcl/vcl_locked.h>
30 #include <vppinfra/time.h>
31 #include <vppinfra/bitmap.h>
32 #include <vppinfra/lock.h>
33 #include <vppinfra/pool.h>
34 #include <vppinfra/hash.h>
36 #define HAVE_CONSTRUCTOR_ATTRIBUTE
37 #ifdef HAVE_CONSTRUCTOR_ATTRIBUTE
38 #define CONSTRUCTOR_ATTRIBUTE \
39 __attribute__ ((constructor))
41 #define CONSTRUCTOR_ATTRIBUTE
42 #endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */
44 #define HAVE_DESTRUCTOR_ATTRIBUTE
45 #ifdef HAVE_DESTRUCTOR_ATTRIBUTE
46 #define DESTRUCTOR_ATTRIBUTE \
47 __attribute__ ((destructor))
49 #define DESTRUCTOR_ATTRIBUTE
52 #define LDP_MAX_NWORKERS 32
54 typedef struct ldp_worker_ctx_
57 clib_time_t clib_time;
62 clib_bitmap_t *rd_bitmap;
63 clib_bitmap_t *wr_bitmap;
64 clib_bitmap_t *ex_bitmap;
65 clib_bitmap_t *si_rd_bitmap;
66 clib_bitmap_t *si_wr_bitmap;
67 clib_bitmap_t *si_ex_bitmap;
68 clib_bitmap_t *libc_rd_bitmap;
69 clib_bitmap_t *libc_wr_bitmap;
70 clib_bitmap_t *libc_ex_bitmap;
76 struct pollfd *libc_poll;
87 /* clib_bitmap_t, fd_mask and vcl_si_set are used interchangeably. Make sure
88 * they are the same size */
89 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
90 "ldp bitmap size mismatch");
91 STATIC_ASSERT (sizeof (vcl_si_set) == sizeof (fd_mask),
92 "ldp bitmap size mismatch");
96 ldp_worker_ctx_t *workers;
98 char app_name[LDP_APP_NAME_MAX];
104 /** vcl needs next epoll_create to go to libc_epoll */
105 u8 vcl_needs_real_epoll;
108 #define LDP_DEBUG ldp->debug
110 #define LDBG(_lvl, _fmt, _args...) \
111 if (ldp->debug > _lvl) \
112 clib_warning ("ldp<%d>: " _fmt, getpid(), ##_args)
114 static ldp_main_t ldp_main = {
115 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
116 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
117 .debug = LDP_DEBUG_INIT,
118 .transparent_tls = 0,
121 static ldp_main_t *ldp = &ldp_main;
123 static inline ldp_worker_ctx_t *
124 ldp_worker_get_current (void)
126 return (ldp->workers + vppcom_worker_index ());
130 * RETURN: 0 on success or -1 on error.
133 ldp_set_app_name (char *app_name)
135 int rv = snprintf (ldp->app_name, LDP_APP_NAME_MAX,
136 "ldp-%d-%s", getpid (), app_name);
138 if (rv >= LDP_APP_NAME_MAX)
139 app_name[LDP_APP_NAME_MAX - 1] = 0;
145 if (ldp->app_name[0] == '\0')
146 ldp_set_app_name ("app");
148 return ldp->app_name;
152 ldp_vlsh_to_fd (vls_handle_t vlsh)
154 return (vlsh + ldp->vlsh_bit_val);
157 static inline vls_handle_t
158 ldp_fd_to_vlsh (int fd)
160 if (fd < ldp->vlsh_bit_val)
161 return VLS_INVALID_HANDLE;
163 return (fd - ldp->vlsh_bit_val);
167 ldp_alloc_workers (void)
171 pool_alloc (ldp->workers, LDP_MAX_NWORKERS);
177 ldp_worker_ctx_t *ldpw;
180 if (PREDICT_TRUE (ldp->init))
184 ldp->vcl_needs_real_epoll = 1;
185 rv = vls_app_create (ldp_get_app_name ());
188 ldp->vcl_needs_real_epoll = 0;
189 if (rv == VPPCOM_EEXIST)
191 LDBG (2, "\nERROR: ldp_init: vppcom_app_create()"
192 " failed! rv = %d (%s)\n", rv, vppcom_retval_str (rv));
196 ldp->vcl_needs_real_epoll = 0;
197 ldp_alloc_workers ();
198 ldpw = ldp_worker_get_current ();
200 char *env_var_str = getenv (LDP_ENV_DEBUG);
204 if (sscanf (env_var_str, "%u", &tmp) != 1)
205 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
206 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
211 LDBG (0, "configured LDP debug level (%u) from env var "
212 LDP_ENV_DEBUG "!", ldp->debug);
216 env_var_str = getenv (LDP_ENV_APP_NAME);
219 ldp_set_app_name (env_var_str);
220 LDBG (0, "configured LDP app name (%s) from the env var "
221 LDP_ENV_APP_NAME "!", ldp->app_name);
224 env_var_str = getenv (LDP_ENV_SID_BIT);
228 if (sscanf (env_var_str, "%u", &sb) != 1)
230 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
231 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
232 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
234 else if (sb < LDP_SID_BIT_MIN)
236 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
237 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
239 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
240 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
241 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
242 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
244 else if (sb > LDP_SID_BIT_MAX)
246 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
247 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
249 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
250 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
251 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
252 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
256 ldp->vlsh_bit_val = (1 << sb);
257 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
259 LDBG (0, "configured LDP sid bit (%u) from "
260 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
261 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
264 /* Make sure there are enough bits in the fd set for vcl sessions */
265 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
267 LDBG (0, "ERROR: LDP vlsh bit value %d > FD_SETSIZE/2 %d!",
268 ldp->vlsh_bit_val, FD_SETSIZE / 2);
273 env_var_str = getenv (LDP_ENV_TLS_TRANS);
276 ldp->transparent_tls = 1;
280 pool_foreach (ldpw, ldp->workers, ({
281 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
285 LDBG (0, "LDP initialization: done!");
296 if ((errno = -ldp_init ()))
299 vlsh = ldp_fd_to_vlsh (fd);
300 if (vlsh != VLS_INVALID_HANDLE)
302 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
305 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
307 rv = libc_close (epfd);
310 u32 size = sizeof (epfd);
313 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
316 else if (PREDICT_FALSE (epfd < 0))
323 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
325 rv = vls_close (vlsh);
334 LDBG (0, "fd %d: calling libc_close", fd);
335 rv = libc_close (fd);
343 read (int fd, void *buf, size_t nbytes)
348 if ((errno = -ldp_init ()))
351 vlsh = ldp_fd_to_vlsh (fd);
352 if (vlsh != VLS_INVALID_HANDLE)
354 size = vls_read (vlsh, buf, nbytes);
363 size = libc_read (fd, buf, nbytes);
370 readv (int fd, const struct iovec * iov, int iovcnt)
372 int rv = 0, i, total = 0;
376 if ((errno = -ldp_init ()))
379 vlsh = ldp_fd_to_vlsh (fd);
380 if (vlsh != VLS_INVALID_HANDLE)
384 for (i = 0; i < iovcnt; ++i)
386 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
392 if (rv < iov[i].iov_len)
397 while ((rv >= 0) && (total == 0));
409 size = libc_readv (fd, iov, iovcnt);
416 write (int fd, const void *buf, size_t nbytes)
421 if ((errno = -ldp_init ()))
424 vlsh = ldp_fd_to_vlsh (fd);
425 if (vlsh != VLS_INVALID_HANDLE)
427 size = vls_write_msg (vlsh, (void *) buf, nbytes);
436 size = libc_write (fd, buf, nbytes);
443 writev (int fd, const struct iovec * iov, int iovcnt)
445 ssize_t size = 0, total = 0;
449 if ((errno = -ldp_init ()))
452 vlsh = ldp_fd_to_vlsh (fd);
453 if (vlsh != VLS_INVALID_HANDLE)
457 for (i = 0; i < iovcnt; ++i)
459 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
465 if (rv < iov[i].iov_len)
470 while ((rv >= 0) && (total == 0));
482 size = libc_writev (fd, iov, iovcnt);
489 fcntl (int fd, int cmd, ...)
495 if ((errno = -ldp_init ()))
500 vlsh = ldp_fd_to_vlsh (fd);
501 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
502 if (vlsh != VLS_INVALID_HANDLE)
504 int flags = va_arg (ap, int);
507 size = sizeof (flags);
512 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
516 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
521 /* TODO handle this */
522 LDBG (0, "F_SETFD ignored flags %u", flags);
537 rv = libc_vfcntl (fd, cmd, ap);
546 ioctl (int fd, unsigned long int cmd, ...)
552 if ((errno = -ldp_init ()))
557 vlsh = ldp_fd_to_vlsh (fd);
558 if (vlsh != VLS_INVALID_HANDLE)
563 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
568 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
569 u32 size = sizeof (flags);
571 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
572 * non-blocking, the flags should be read here and merged
575 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
591 rv = libc_vioctl (fd, cmd, ap);
599 ldp_select_init_maps (fd_set * __restrict original,
600 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
601 clib_bitmap_t ** vclb, int nfds, u32 minbits,
602 u32 n_bytes, uword * si_bits, uword * libc_bits)
604 uword si_bits_set, libc_bits_set;
608 clib_bitmap_validate (*vclb, minbits);
609 clib_bitmap_validate (*libcb, minbits);
610 clib_bitmap_validate (*resultb, minbits);
611 clib_memcpy_fast (*resultb, original, n_bytes);
612 memset (original, 0, n_bytes);
615 clib_bitmap_foreach (fd, *resultb, ({
618 vlsh = ldp_fd_to_vlsh (fd);
619 if (vlsh == VLS_INVALID_HANDLE)
620 clib_bitmap_set_no_check (*libcb, fd, 1);
622 clib_bitmap_set_no_check (*vclb, vlsh_to_session_index (vlsh), 1);
626 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
627 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
629 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
630 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
634 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
644 clib_bitmap_foreach (si, vclb, ({
645 vlsh = vls_session_index_to_vlsh (si);
646 fd = ldp_vlsh_to_fd (vlsh);
647 if (PREDICT_FALSE (fd < 0))
660 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
668 clib_bitmap_foreach (fd, result, ({
669 FD_SET ((int)fd, libcb);
675 ldp_pselect (int nfds, fd_set * __restrict readfds,
676 fd_set * __restrict writefds,
677 fd_set * __restrict exceptfds,
678 const struct timespec *__restrict timeout,
679 const __sigset_t * __restrict sigmask)
681 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
682 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
683 struct timespec libc_tspec = { 0 };
684 f64 time_out, vcl_timeout = 0;
685 uword si_bits, libc_bits;
686 int rv, bits_set = 0;
694 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
695 clib_time_init (&ldpw->clib_time);
699 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
700 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
702 /* select as fine grained sleep */
705 time_out += clib_time_now (&ldpw->clib_time);
706 while (clib_time_now (&ldpw->clib_time) < time_out)
719 if (nfds <= ldp->vlsh_bit_val)
721 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
726 si_bits = libc_bits = 0;
727 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
730 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
731 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
732 &si_bits, &libc_bits);
734 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
735 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
736 minbits, n_bytes, &si_bits, &libc_bits);
738 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
739 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
740 minbits, n_bytes, &si_bits, &libc_bits);
742 if (PREDICT_FALSE (!si_bits && !libc_bits))
750 libc_tspec = timeout ? *timeout : libc_tspec;
757 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
758 vec_len (ldpw->rd_bitmap) *
759 sizeof (clib_bitmap_t));
761 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
762 vec_len (ldpw->wr_bitmap) *
763 sizeof (clib_bitmap_t));
765 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
766 vec_len (ldpw->ex_bitmap) *
767 sizeof (clib_bitmap_t));
769 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
770 writefds ? ldpw->wr_bitmap : NULL,
771 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
779 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
785 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
791 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
802 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
803 vec_len (ldpw->libc_rd_bitmap) *
804 sizeof (clib_bitmap_t));
806 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
807 vec_len (ldpw->libc_wr_bitmap) *
808 sizeof (clib_bitmap_t));
810 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
811 vec_len (ldpw->libc_ex_bitmap) *
812 sizeof (clib_bitmap_t));
814 rv = libc_pselect (libc_bits,
815 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
816 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
817 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
818 &libc_tspec, sigmask);
821 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
822 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
823 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
834 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
838 /* TBD: set timeout to amount of time left */
839 clib_bitmap_zero (ldpw->rd_bitmap);
840 clib_bitmap_zero (ldpw->si_rd_bitmap);
841 clib_bitmap_zero (ldpw->libc_rd_bitmap);
842 clib_bitmap_zero (ldpw->wr_bitmap);
843 clib_bitmap_zero (ldpw->si_wr_bitmap);
844 clib_bitmap_zero (ldpw->libc_wr_bitmap);
845 clib_bitmap_zero (ldpw->ex_bitmap);
846 clib_bitmap_zero (ldpw->si_ex_bitmap);
847 clib_bitmap_zero (ldpw->libc_ex_bitmap);
853 select (int nfds, fd_set * __restrict readfds,
854 fd_set * __restrict writefds,
855 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
857 struct timespec tspec;
861 tspec.tv_sec = timeout->tv_sec;
862 tspec.tv_nsec = timeout->tv_usec * 1000;
864 return ldp_pselect (nfds, readfds, writefds, exceptfds,
865 timeout ? &tspec : NULL, NULL);
870 pselect (int nfds, fd_set * __restrict readfds,
871 fd_set * __restrict writefds,
872 fd_set * __restrict exceptfds,
873 const struct timespec *__restrict timeout,
874 const __sigset_t * __restrict sigmask)
876 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
880 /* If transparent TLS mode is turned on, then ldp will load key and cert.
883 load_tls_cert (vls_handle_t vlsh)
885 char *env_var_str = getenv (LDP_ENV_TLS_CERT);
893 fp = fopen (env_var_str, "r");
896 LDBG (0, "ERROR: failed to open cert file %s \n", env_var_str);
899 cert_size = fread (inbuf, sizeof (char), sizeof (inbuf), fp);
901 vppcom_session_tls_add_cert (vlsh_to_session_index (vlsh), tls_cert,
907 LDBG (0, "ERROR: failed to read LDP environment %s\n",
915 load_tls_key (vls_handle_t vlsh)
917 char *env_var_str = getenv (LDP_ENV_TLS_KEY);
925 fp = fopen (env_var_str, "r");
928 LDBG (0, "ERROR: failed to open key file %s \n", env_var_str);
931 key_size = fread (inbuf, sizeof (char), sizeof (inbuf), fp);
933 vppcom_session_tls_add_key (vlsh_to_session_index (vlsh), tls_key,
939 LDBG (0, "ERROR: failed to read LDP environment %s\n", LDP_ENV_TLS_KEY);
946 socket (int domain, int type, int protocol)
948 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
949 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
952 if ((errno = -ldp_init ()))
955 if (((domain == AF_INET) || (domain == AF_INET6)) &&
956 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
959 if (ldp->transparent_tls)
961 proto = VPPCOM_PROTO_TLS;
964 proto = ((sock_type == SOCK_DGRAM) ?
965 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
967 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
968 proto, vppcom_proto_str (proto), is_nonblocking);
970 vlsh = vls_create (proto, is_nonblocking);
978 if (ldp->transparent_tls)
980 if (load_tls_cert (vlsh) < 0 || load_tls_key (vlsh) < 0)
985 rv = ldp_vlsh_to_fd (vlsh);
990 LDBG (0, "calling libc_socket");
991 rv = libc_socket (domain, type, protocol);
998 * Create two new sockets, of type TYPE in domain DOMAIN and using
999 * protocol PROTOCOL, which are connected to each other, and put file
1000 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
1001 * one will be chosen automatically.
1002 * Returns 0 on success, -1 for errors.
1005 socketpair (int domain, int type, int protocol, int fds[2])
1007 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1009 if ((errno = -ldp_init ()))
1012 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1013 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1015 LDBG (0, "LDP-TBD");
1021 LDBG (1, "calling libc_socketpair");
1022 rv = libc_socketpair (domain, type, protocol, fds);
1029 bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1034 if ((errno = -ldp_init ()))
1037 vlsh = ldp_fd_to_vlsh (fd);
1038 if (vlsh != VLS_INVALID_HANDLE)
1042 switch (addr->sa_family)
1045 if (len != sizeof (struct sockaddr_in))
1047 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1053 ep.is_ip4 = VPPCOM_IS_IP4;
1054 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1055 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1059 if (len != sizeof (struct sockaddr_in6))
1061 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1067 ep.is_ip4 = VPPCOM_IS_IP6;
1068 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1069 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1073 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1074 fd, vlsh, addr->sa_family);
1075 errno = EAFNOSUPPORT;
1079 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1082 rv = vls_bind (vlsh, &ep);
1083 if (rv != VPPCOM_OK)
1091 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1092 rv = libc_bind (fd, addr, len);
1096 LDBG (1, "fd %d: returning %d", fd, rv);
1102 ldp_copy_ep_to_sockaddr (__SOCKADDR_ARG addr, socklen_t * __restrict len,
1103 vppcom_endpt_t * ep)
1106 int sa_len, copy_len;
1108 if ((errno = -ldp_init ()))
1111 if (addr && len && ep)
1113 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1114 switch (addr->sa_family)
1117 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1118 if (*len > sizeof (struct sockaddr_in))
1119 *len = sizeof (struct sockaddr_in);
1120 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1121 copy_len = *len - sa_len;
1123 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1128 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1129 if (*len > sizeof (struct sockaddr_in6))
1130 *len = sizeof (struct sockaddr_in6);
1131 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1132 copy_len = *len - sa_len;
1134 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1135 __in6_u.__u6_addr8, ep->ip, copy_len);
1148 getsockname (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1153 if ((errno = -ldp_init ()))
1156 vlsh = ldp_fd_to_vlsh (fd);
1157 if (vlsh != VLS_INVALID_HANDLE)
1160 u8 addr_buf[sizeof (struct in6_addr)];
1161 u32 size = sizeof (ep);
1165 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1166 if (rv != VPPCOM_OK)
1173 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1174 if (rv != VPPCOM_OK)
1183 rv = libc_getsockname (fd, addr, len);
1190 connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1195 if ((errno = -ldp_init ()))
1200 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1206 vlsh = ldp_fd_to_vlsh (fd);
1207 if (vlsh != VLS_INVALID_HANDLE)
1211 switch (addr->sa_family)
1214 if (len != sizeof (struct sockaddr_in))
1216 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1222 ep.is_ip4 = VPPCOM_IS_IP4;
1223 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1224 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1228 if (len != sizeof (struct sockaddr_in6))
1230 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1236 ep.is_ip4 = VPPCOM_IS_IP6;
1237 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1238 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1242 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1243 fd, vlsh, addr->sa_family);
1244 errno = EAFNOSUPPORT;
1248 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1251 rv = vls_connect (vlsh, &ep);
1252 if (rv != VPPCOM_OK)
1260 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1263 rv = libc_connect (fd, addr, len);
1267 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1272 getpeername (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1277 if ((errno = -ldp_init ()))
1280 vlsh = ldp_fd_to_vlsh (fd);
1281 if (vlsh != VLS_INVALID_HANDLE)
1284 u8 addr_buf[sizeof (struct in6_addr)];
1285 u32 size = sizeof (ep);
1288 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1289 if (rv != VPPCOM_OK)
1296 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1297 if (rv != VPPCOM_OK)
1306 rv = libc_getpeername (fd, addr, len);
1313 send (int fd, const void *buf, size_t n, int flags)
1315 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1318 if ((errno = -ldp_init ()))
1321 if (vlsh != VLS_INVALID_HANDLE)
1323 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1324 if (size < VPPCOM_OK)
1332 size = libc_send (fd, buf, n, flags);
1339 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1341 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1345 if ((errno = -ldp_init ()))
1348 vlsh = ldp_fd_to_vlsh (out_fd);
1349 if (vlsh != VLS_INVALID_HANDLE)
1352 ssize_t results = 0;
1353 size_t n_bytes_left = len;
1354 size_t bytes_to_read;
1357 u32 flags, flags_len = sizeof (flags);
1359 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1360 if (PREDICT_FALSE (rv != VPPCOM_OK))
1362 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1363 out_fd, vlsh, rv, vppcom_retval_str (rv));
1365 vec_reset_length (ldpw->io_buffer);
1373 off_t off = lseek (in_fd, *offset, SEEK_SET);
1374 if (PREDICT_FALSE (off == -1))
1380 ASSERT (off == *offset);
1385 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1388 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %d (%s)!",
1389 out_fd, vlsh, size, vppcom_retval_str (size));
1390 vec_reset_length (ldpw->io_buffer);
1396 bytes_to_read = size;
1397 if (bytes_to_read == 0)
1399 if (flags & O_NONBLOCK)
1408 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1409 vec_validate (ldpw->io_buffer, bytes_to_read);
1410 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1415 vec_reset_length (ldpw->io_buffer);
1422 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1425 if (size == VPPCOM_EAGAIN)
1427 if (flags & O_NONBLOCK)
1438 vec_reset_length (ldpw->io_buffer);
1447 ASSERT (n_bytes_left >= nbytes);
1448 n_bytes_left = n_bytes_left - nbytes;
1450 while (n_bytes_left > 0);
1453 vec_reset_length (ldpw->io_buffer);
1456 off_t off = lseek (in_fd, *offset, SEEK_SET);
1457 if (PREDICT_FALSE (off == -1))
1463 ASSERT (off == *offset);
1464 *offset += results + 1;
1476 size = libc_sendfile (out_fd, in_fd, offset, len);
1484 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1486 return sendfile (out_fd, in_fd, offset, len);
1490 recv (int fd, void *buf, size_t n, int flags)
1495 if ((errno = -ldp_init ()))
1498 vlsh = ldp_fd_to_vlsh (fd);
1499 if (vlsh != VLS_INVALID_HANDLE)
1501 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1507 size = libc_recv (fd, buf, n, flags);
1514 sendto (int fd, const void *buf, size_t n, int flags,
1515 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1520 if ((errno = -ldp_init ()))
1523 vlsh = ldp_fd_to_vlsh (fd);
1524 if (vlsh != INVALID_SESSION_ID)
1526 vppcom_endpt_t *ep = 0;
1532 switch (addr->sa_family)
1535 ep->is_ip4 = VPPCOM_IS_IP4;
1537 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1539 (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1543 ep->is_ip4 = VPPCOM_IS_IP6;
1545 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1547 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1551 errno = EAFNOSUPPORT;
1557 size = vls_sendto (vlsh, (void *) buf, n, flags, ep);
1566 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1574 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1575 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1580 if ((errno = -ldp_init ()))
1583 sid = ldp_fd_to_vlsh (fd);
1584 if (sid != VLS_INVALID_HANDLE)
1587 u8 src_addr[sizeof (struct sockaddr_in6)];
1592 size = vls_recvfrom (sid, buf, n, flags, &ep);
1596 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1602 size = vls_recvfrom (sid, buf, n, flags, NULL);
1612 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1619 sendmsg (int fd, const struct msghdr * message, int flags)
1624 if ((errno = -ldp_init ()))
1627 vlsh = ldp_fd_to_vlsh (fd);
1628 if (vlsh != VLS_INVALID_HANDLE)
1630 LDBG (0, "LDP-TBD");
1636 size = libc_sendmsg (fd, message, flags);
1644 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1647 const char *func_str;
1648 u32 sh = ldp_fd_to_vlsh (fd);
1650 if ((errno = -ldp_init ()))
1653 if (sh != INVALID_SESSION_ID)
1655 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1661 func_str = "libc_sendmmsg";
1664 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1665 "vmessages %p, vlen %u, flags 0x%x",
1666 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1668 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1675 int errno_val = errno;
1677 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1678 "rv %d, errno = %d", getpid (), fd, fd,
1679 func_str, size, errno_val);
1683 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1684 getpid (), fd, fd, size, size);
1691 recvmsg (int fd, struct msghdr * message, int flags)
1696 if ((errno = -ldp_init ()))
1699 vlsh = ldp_fd_to_vlsh (fd);
1700 if (vlsh != VLS_INVALID_HANDLE)
1702 LDBG (0, "LDP-TBD");
1708 size = libc_recvmsg (fd, message, flags);
1716 recvmmsg (int fd, struct mmsghdr *vmessages,
1717 unsigned int vlen, int flags, struct timespec *tmo)
1720 const char *func_str;
1721 u32 sh = ldp_fd_to_vlsh (fd);
1723 if ((errno = -ldp_init ()))
1726 if (sh != INVALID_SESSION_ID)
1728 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1734 func_str = "libc_recvmmsg";
1737 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1738 "vmessages %p, vlen %u, flags 0x%x, tmo %p",
1739 getpid (), fd, fd, func_str, vmessages, vlen,
1742 size = libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1749 int errno_val = errno;
1751 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1752 "rv %d, errno = %d", getpid (), fd, fd,
1753 func_str, size, errno_val);
1757 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1758 getpid (), fd, fd, size, size);
1765 getsockopt (int fd, int level, int optname,
1766 void *__restrict optval, socklen_t * __restrict optlen)
1771 if ((errno = -ldp_init ()))
1774 vlsh = ldp_fd_to_vlsh (fd);
1775 if (vlsh != VLS_INVALID_HANDLE)
1785 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
1789 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
1793 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
1797 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
1801 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
1803 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
1804 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
1805 memset (optval, 0, *optlen);
1811 case TCP_CONGESTION:
1812 strcpy (optval, "cubic");
1813 *optlen = strlen ("cubic");
1817 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
1818 "optname %d unsupported!", fd, vlsh, optname);
1826 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
1829 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
1830 "optname %d unsupported!", fd, vlsh, optname);
1838 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
1841 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
1844 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
1845 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
1848 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
1852 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
1856 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
1859 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
1862 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
1865 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
1866 "optname %d unsupported!", fd, vlsh, optname);
1874 if (rv != VPPCOM_OK)
1882 rv = libc_getsockopt (fd, level, optname, optval, optlen);
1889 setsockopt (int fd, int level, int optname,
1890 const void *optval, socklen_t optlen)
1895 if ((errno = -ldp_init ()))
1898 vlsh = ldp_fd_to_vlsh (fd);
1899 if (vlsh != VLS_INVALID_HANDLE)
1909 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
1910 (void *) optval, &optlen);
1913 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
1914 (void *) optval, &optlen);
1917 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
1918 (void *) optval, &optlen);
1921 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
1922 (void *) optval, &optlen);
1924 case TCP_CONGESTION:
1930 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
1931 "optname %d unsupported!", fd, vlsh, optname);
1939 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
1940 (void *) optval, &optlen);
1943 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
1944 "optname %d unsupported!", fd, vlsh, optname);
1952 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
1953 (void *) optval, &optlen);
1956 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
1957 (void *) optval, &optlen);
1960 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
1961 (void *) optval, &optlen);
1964 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
1965 "optname %d unsupported!", fd, vlsh, optname);
1973 if (rv != VPPCOM_OK)
1981 rv = libc_setsockopt (fd, level, optname, optval, optlen);
1988 listen (int fd, int n)
1993 if ((errno = -ldp_init ()))
1996 vlsh = ldp_fd_to_vlsh (fd);
1997 if (vlsh != VLS_INVALID_HANDLE)
1999 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2001 rv = vls_listen (vlsh, n);
2002 if (rv != VPPCOM_OK)
2010 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2011 rv = libc_listen (fd, n);
2014 LDBG (1, "fd %d: returning %d", fd, rv);
2019 ldp_accept4 (int listen_fd, __SOCKADDR_ARG addr,
2020 socklen_t * __restrict addr_len, int flags)
2022 vls_handle_t listen_vlsh, accept_vlsh;
2025 if ((errno = -ldp_init ()))
2028 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2029 if (listen_vlsh != VLS_INVALID_HANDLE)
2032 u8 src_addr[sizeof (struct sockaddr_in6)];
2033 memset (&ep, 0, sizeof (ep));
2036 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2037 " ep %p, flags 0x%x", listen_fd, listen_vlsh, ep, flags);
2039 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2040 if (accept_vlsh < 0)
2042 errno = -accept_vlsh;
2047 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2048 if (rv != VPPCOM_OK)
2050 (void) vls_close (accept_vlsh);
2056 rv = ldp_vlsh_to_fd (accept_vlsh);
2062 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2063 " flags 0x%x", listen_fd, addr, addr_len, flags);
2065 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2068 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2074 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2077 return ldp_accept4 (fd, addr, addr_len, flags);
2081 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2083 return ldp_accept4 (fd, addr, addr_len, 0);
2087 shutdown (int fd, int how)
2091 u32 flags_len = sizeof (flags);
2093 if ((errno = -ldp_init ()))
2096 vlsh = ldp_fd_to_vlsh (fd);
2097 if (vlsh != VLS_INVALID_HANDLE)
2099 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2101 if (vls_attr (vlsh, VPPCOM_ATTR_SET_SHUT, &how, &flags_len))
2107 if (vls_attr (vlsh, VPPCOM_ATTR_GET_SHUT, &flags, &flags_len))
2113 if (flags == SHUT_RDWR)
2118 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2119 rv = libc_shutdown (fd, how);
2126 epoll_create1 (int flags)
2128 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2132 if ((errno = -ldp_init ()))
2135 if (ldp->vcl_needs_real_epoll)
2137 /* Make sure workers have been allocated */
2140 ldp_alloc_workers ();
2141 ldpw = ldp_worker_get_current ();
2143 rv = libc_epoll_create1 (flags);
2144 ldp->vcl_needs_real_epoll = 0;
2145 ldpw->vcl_mq_epfd = rv;
2146 LDBG (0, "created vcl epfd %u", rv);
2150 vlsh = vls_epoll_create ();
2151 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2158 rv = ldp_vlsh_to_fd (vlsh);
2160 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2165 epoll_create (int size)
2167 return epoll_create1 (0);
2171 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2173 vls_handle_t vep_vlsh, vlsh;
2176 if ((errno = -ldp_init ()))
2179 vep_vlsh = ldp_fd_to_vlsh (epfd);
2180 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2182 /* The LDP epoll_create1 always creates VCL epfd's.
2183 * The app should never have a kernel base epoll fd unless it
2184 * was acquired outside of the LD_PRELOAD process context.
2185 * In any case, if we get one, punt it to libc_epoll_ctl.
2187 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2188 " event %p", epfd, op, fd, event);
2190 rv = libc_epoll_ctl (epfd, op, fd, event);
2194 vlsh = ldp_fd_to_vlsh (fd);
2196 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2199 if (vlsh != VLS_INVALID_HANDLE)
2201 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2202 " event %p", epfd, vep_vlsh, vlsh, event);
2204 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2205 if (rv != VPPCOM_OK)
2214 u32 size = sizeof (epfd);
2216 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2219 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2220 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2222 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2229 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2238 else if (PREDICT_FALSE (libc_epfd < 0))
2245 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2246 " event %p", epfd, libc_epfd, op, fd, event);
2248 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2256 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2257 int timeout, const sigset_t * sigmask)
2259 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2260 double time_to_wait = (double) 0, max_time;
2261 int libc_epfd, rv = 0;
2262 vls_handle_t ep_vlsh;
2264 if ((errno = -ldp_init ()))
2267 if (PREDICT_FALSE (!events || (timeout < -1)))
2273 if (epfd == ldpw->vcl_mq_epfd)
2274 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2276 ep_vlsh = ldp_fd_to_vlsh (epfd);
2277 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2279 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2284 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2285 clib_time_init (&ldpw->clib_time);
2286 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2287 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2289 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2290 if (PREDICT_FALSE (libc_epfd < 0))
2297 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2298 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2299 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2302 if (!ldpw->epoll_wait_vcl)
2304 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2307 ldpw->epoll_wait_vcl = 1;
2318 ldpw->epoll_wait_vcl = 0;
2322 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2327 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2334 epoll_pwait (int epfd, struct epoll_event *events,
2335 int maxevents, int timeout, const sigset_t * sigmask)
2337 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2341 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2343 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2347 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2349 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2350 int rv, i, n_revents = 0;
2355 LDBG (3, "fds %p, nfds %d, timeout %d", fds, nfds, timeout);
2357 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2358 clib_time_init (&ldpw->clib_time);
2360 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2361 max_time += clib_time_now (&ldpw->clib_time);
2363 for (i = 0; i < nfds; i++)
2368 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2369 if (vlsh != VLS_INVALID_HANDLE)
2371 fds[i].fd = -fds[i].fd;
2372 vec_add2 (ldpw->vcl_poll, vp, 1);
2374 vp->sh = vlsh_to_sh (vlsh);
2375 vp->events = fds[i].events;
2376 #ifdef __USE_XOPEN2K
2377 if (fds[i].events & POLLRDNORM)
2378 vp->events |= POLLIN;
2379 if (fds[i].events & POLLWRNORM)
2380 vp->events |= POLLOUT;
2382 vp->revents = fds[i].revents;
2386 vec_add1 (ldpw->libc_poll, fds[i]);
2387 vec_add1 (ldpw->libc_poll_idxs, i);
2393 if (vec_len (ldpw->vcl_poll))
2395 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2406 if (vec_len (ldpw->libc_poll))
2408 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2421 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2425 vec_foreach (vp, ldpw->vcl_poll)
2427 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2428 fds[vp->fds_ndx].revents = vp->revents;
2429 #ifdef __USE_XOPEN2K
2430 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2431 (fds[vp->fds_ndx].events & POLLRDNORM))
2432 fds[vp->fds_ndx].revents |= POLLRDNORM;
2433 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2434 (fds[vp->fds_ndx].events & POLLWRNORM))
2435 fds[vp->fds_ndx].revents |= POLLWRNORM;
2438 vec_reset_length (ldpw->vcl_poll);
2440 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2442 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2444 vec_reset_length (ldpw->libc_poll_idxs);
2445 vec_reset_length (ldpw->libc_poll);
2452 ppoll (struct pollfd *fds, nfds_t nfds,
2453 const struct timespec *timeout, const sigset_t * sigmask)
2455 if ((errno = -ldp_init ()))
2458 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2466 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2468 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2471 * This function is called when the library is loaded
2474 ldp_constructor (void)
2476 swrap_constructor ();
2477 if (ldp_init () != 0)
2479 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2483 else if (LDP_DEBUG > 0)
2484 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2488 * This function is called when the library is unloaded
2491 ldp_destructor (void)
2494 swrap_destructor ();
2499 /* Don't use clib_warning() here because that calls writev()
2500 * which will call ldp_init().
2503 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2504 __func__, __LINE__, getpid ());
2509 * fd.io coding-style-patch-verification: ON
2512 * eval: (c-set-style "gnu")