2 * Copyright (c) 2016 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];
103 /** vcl needs next epoll_create to go to libc_epoll */
104 u8 vcl_needs_real_epoll;
107 #define LDP_DEBUG ldp->debug
109 #define LDBG(_lvl, _fmt, _args...) \
110 if (ldp->debug > _lvl) \
111 clib_warning ("ldp<%d>: " _fmt, getpid(), ##_args)
113 static ldp_main_t ldp_main = {
114 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
115 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
116 .debug = LDP_DEBUG_INIT,
119 static ldp_main_t *ldp = &ldp_main;
121 static inline ldp_worker_ctx_t *
122 ldp_worker_get_current (void)
124 return (ldp->workers + vppcom_worker_index ());
128 * RETURN: 0 on success or -1 on error.
131 ldp_set_app_name (char *app_name)
133 int rv = snprintf (ldp->app_name, LDP_APP_NAME_MAX,
134 "ldp-%d-%s", getpid (), app_name);
136 if (rv >= LDP_APP_NAME_MAX)
137 app_name[LDP_APP_NAME_MAX - 1] = 0;
143 if (ldp->app_name[0] == '\0')
144 ldp_set_app_name ("app");
146 return ldp->app_name;
150 ldp_vlsh_to_fd (vls_handle_t vlsh)
152 return (vlsh + ldp->vlsh_bit_val);
155 static inline vls_handle_t
156 ldp_fd_to_vlsh (int fd)
158 if (fd < ldp->vlsh_bit_val)
159 return VLS_INVALID_HANDLE;
161 return (fd - ldp->vlsh_bit_val);
167 ldp_worker_ctx_t *ldpw;
170 if (PREDICT_TRUE (ldp->init))
174 ldp->vcl_needs_real_epoll = 1;
175 rv = vls_app_create (ldp_get_app_name ());
178 ldp->vcl_needs_real_epoll = 0;
179 if (rv == VPPCOM_EEXIST)
181 LDBG (2, "\nERROR: ldp_init: vppcom_app_create()"
182 " failed! rv = %d (%s)\n", rv, vppcom_retval_str (rv));
186 ldp->vcl_needs_real_epoll = 0;
187 pool_alloc (ldp->workers, LDP_MAX_NWORKERS);
188 ldpw = ldp_worker_get_current ();
190 char *env_var_str = getenv (LDP_ENV_DEBUG);
194 if (sscanf (env_var_str, "%u", &tmp) != 1)
195 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
196 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
201 LDBG (0, "configured LDP debug level (%u) from env var "
202 LDP_ENV_DEBUG "!", ldp->debug);
206 env_var_str = getenv (LDP_ENV_APP_NAME);
209 ldp_set_app_name (env_var_str);
210 LDBG (0, "configured LDP app name (%s) from the env var "
211 LDP_ENV_APP_NAME "!", ldp->app_name);
214 env_var_str = getenv (LDP_ENV_SID_BIT);
218 if (sscanf (env_var_str, "%u", &sb) != 1)
220 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
221 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
222 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
224 else if (sb < LDP_SID_BIT_MIN)
226 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
227 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
229 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
230 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
231 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
232 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
234 else if (sb > LDP_SID_BIT_MAX)
236 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
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 big. Using LDP_SID_BIT_MAX"
241 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
242 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
246 ldp->vlsh_bit_val = (1 << sb);
247 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
249 LDBG (0, "configured LDP sid bit (%u) from "
250 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
251 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
254 /* Make sure there are enough bits in the fd set for vcl sessions */
255 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
257 LDBG (0, "ERROR: LDP vlsh bit value %d > FD_SETSIZE/2 %d!",
258 ldp->vlsh_bit_val, FD_SETSIZE / 2);
265 pool_foreach (ldpw, ldp->workers, ({
266 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
270 LDBG (0, "LDP initialization: done!");
281 if ((errno = -ldp_init ()))
284 vlsh = ldp_fd_to_vlsh (fd);
285 if (vlsh != VLS_INVALID_HANDLE)
287 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
290 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
292 rv = libc_close (epfd);
295 u32 size = sizeof (epfd);
298 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
301 else if (PREDICT_FALSE (epfd < 0))
308 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
310 rv = vls_close (vlsh);
319 LDBG (0, "fd %d: calling libc_close", fd);
320 rv = libc_close (fd);
328 read (int fd, void *buf, size_t nbytes)
333 if ((errno = -ldp_init ()))
336 vlsh = ldp_fd_to_vlsh (fd);
337 if (vlsh != VLS_INVALID_HANDLE)
339 size = vls_read (vlsh, buf, nbytes);
348 size = libc_read (fd, buf, nbytes);
355 readv (int fd, const struct iovec * iov, int iovcnt)
357 int rv = 0, i, total = 0;
361 if ((errno = -ldp_init ()))
364 vlsh = ldp_fd_to_vlsh (fd);
365 if (vlsh != VLS_INVALID_HANDLE)
369 for (i = 0; i < iovcnt; ++i)
371 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
377 if (rv < iov[i].iov_len)
382 while ((rv >= 0) && (total == 0));
394 size = libc_readv (fd, iov, iovcnt);
401 write (int fd, const void *buf, size_t nbytes)
406 if ((errno = -ldp_init ()))
409 vlsh = ldp_fd_to_vlsh (fd);
410 if (vlsh != VLS_INVALID_HANDLE)
412 size = vls_write_msg (vlsh, (void *) buf, nbytes);
421 size = libc_write (fd, buf, nbytes);
428 writev (int fd, const struct iovec * iov, int iovcnt)
430 ssize_t size = 0, total = 0;
434 if ((errno = -ldp_init ()))
437 vlsh = ldp_fd_to_vlsh (fd);
438 if (vlsh != VLS_INVALID_HANDLE)
442 for (i = 0; i < iovcnt; ++i)
444 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
450 if (rv < iov[i].iov_len)
455 while ((rv >= 0) && (total == 0));
467 size = libc_writev (fd, iov, iovcnt);
474 fcntl (int fd, int cmd, ...)
480 if ((errno = -ldp_init ()))
485 vlsh = ldp_fd_to_vlsh (fd);
486 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
487 if (vlsh != VLS_INVALID_HANDLE)
489 int flags = va_arg (ap, int);
492 size = sizeof (flags);
497 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
501 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
506 /* TODO handle this */
507 LDBG (0, "F_SETFD ignored flags %u", flags);
522 rv = libc_vfcntl (fd, cmd, ap);
531 ioctl (int fd, unsigned long int cmd, ...)
537 if ((errno = -ldp_init ()))
542 vlsh = ldp_fd_to_vlsh (fd);
543 if (vlsh != VLS_INVALID_HANDLE)
548 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
553 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
554 u32 size = sizeof (flags);
556 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
557 * non-blocking, the flags should be read here and merged
560 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
576 rv = libc_vioctl (fd, cmd, ap);
584 ldp_select_init_maps (fd_set * __restrict original,
585 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
586 clib_bitmap_t ** vclb, int nfds, u32 minbits,
587 u32 n_bytes, uword * si_bits, uword * libc_bits)
589 uword si_bits_set, libc_bits_set;
593 clib_bitmap_validate (*vclb, minbits);
594 clib_bitmap_validate (*libcb, minbits);
595 clib_bitmap_validate (*resultb, minbits);
596 clib_memcpy_fast (*resultb, original, n_bytes);
597 memset (original, 0, n_bytes);
600 clib_bitmap_foreach (fd, *resultb, ({
603 vlsh = ldp_fd_to_vlsh (fd);
604 if (vlsh == VLS_INVALID_HANDLE)
605 clib_bitmap_set_no_check (*libcb, fd, 1);
607 clib_bitmap_set_no_check (*vclb, vlsh_to_session_index (vlsh), 1);
611 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
612 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
614 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
615 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
619 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
629 clib_bitmap_foreach (si, vclb, ({
630 vlsh = vls_session_index_to_vlsh (si);
631 fd = ldp_vlsh_to_fd (vlsh);
632 if (PREDICT_FALSE (fd < 0))
645 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
653 clib_bitmap_foreach (fd, result, ({
654 FD_SET ((int)fd, libcb);
660 ldp_pselect (int nfds, fd_set * __restrict readfds,
661 fd_set * __restrict writefds,
662 fd_set * __restrict exceptfds,
663 const struct timespec *__restrict timeout,
664 const __sigset_t * __restrict sigmask)
666 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
667 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
668 struct timespec libc_tspec = { 0 };
669 f64 time_out, vcl_timeout = 0;
670 uword si_bits, libc_bits;
671 int rv, bits_set = 0;
679 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
680 clib_time_init (&ldpw->clib_time);
684 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
685 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
687 /* select as fine grained sleep */
690 time_out += clib_time_now (&ldpw->clib_time);
691 while (clib_time_now (&ldpw->clib_time) < time_out)
704 if (nfds <= ldp->vlsh_bit_val)
706 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
711 si_bits = libc_bits = 0;
712 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
715 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
716 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
717 &si_bits, &libc_bits);
719 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
720 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
721 minbits, n_bytes, &si_bits, &libc_bits);
723 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
724 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
725 minbits, n_bytes, &si_bits, &libc_bits);
727 if (PREDICT_FALSE (!si_bits && !libc_bits))
735 libc_tspec = timeout ? *timeout : libc_tspec;
742 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
743 vec_len (ldpw->rd_bitmap) *
744 sizeof (clib_bitmap_t));
746 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
747 vec_len (ldpw->wr_bitmap) *
748 sizeof (clib_bitmap_t));
750 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
751 vec_len (ldpw->ex_bitmap) *
752 sizeof (clib_bitmap_t));
754 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
755 writefds ? ldpw->wr_bitmap : NULL,
756 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
764 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
770 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
776 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
787 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
788 vec_len (ldpw->libc_rd_bitmap) *
789 sizeof (clib_bitmap_t));
791 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
792 vec_len (ldpw->libc_wr_bitmap) *
793 sizeof (clib_bitmap_t));
795 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
796 vec_len (ldpw->libc_ex_bitmap) *
797 sizeof (clib_bitmap_t));
799 rv = libc_pselect (libc_bits,
800 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
801 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
802 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
803 &libc_tspec, sigmask);
806 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
807 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
808 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
819 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
823 /* TBD: set timeout to amount of time left */
824 clib_bitmap_zero (ldpw->rd_bitmap);
825 clib_bitmap_zero (ldpw->si_rd_bitmap);
826 clib_bitmap_zero (ldpw->libc_rd_bitmap);
827 clib_bitmap_zero (ldpw->wr_bitmap);
828 clib_bitmap_zero (ldpw->si_wr_bitmap);
829 clib_bitmap_zero (ldpw->libc_wr_bitmap);
830 clib_bitmap_zero (ldpw->ex_bitmap);
831 clib_bitmap_zero (ldpw->si_ex_bitmap);
832 clib_bitmap_zero (ldpw->libc_ex_bitmap);
838 select (int nfds, fd_set * __restrict readfds,
839 fd_set * __restrict writefds,
840 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
842 struct timespec tspec;
846 tspec.tv_sec = timeout->tv_sec;
847 tspec.tv_nsec = timeout->tv_usec * 1000;
849 return ldp_pselect (nfds, readfds, writefds, exceptfds,
850 timeout ? &tspec : NULL, NULL);
855 pselect (int nfds, fd_set * __restrict readfds,
856 fd_set * __restrict writefds,
857 fd_set * __restrict exceptfds,
858 const struct timespec *__restrict timeout,
859 const __sigset_t * __restrict sigmask)
861 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
866 socket (int domain, int type, int protocol)
868 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
869 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
872 if ((errno = -ldp_init ()))
875 if (((domain == AF_INET) || (domain == AF_INET6)) &&
876 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
878 u8 proto = ((sock_type == SOCK_DGRAM) ?
879 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
881 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
882 proto, vppcom_proto_str (proto), is_nonblocking);
884 vlsh = vls_create (proto, is_nonblocking);
892 rv = ldp_vlsh_to_fd (vlsh);
897 LDBG (0, "calling libc_socket");
898 rv = libc_socket (domain, type, protocol);
905 * Create two new sockets, of type TYPE in domain DOMAIN and using
906 * protocol PROTOCOL, which are connected to each other, and put file
907 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
908 * one will be chosen automatically.
909 * Returns 0 on success, -1 for errors.
912 socketpair (int domain, int type, int protocol, int fds[2])
914 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
916 if ((errno = -ldp_init ()))
919 if (((domain == AF_INET) || (domain == AF_INET6)) &&
920 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
928 LDBG (1, "calling libc_socketpair");
929 rv = libc_socketpair (domain, type, protocol, fds);
936 bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
941 if ((errno = -ldp_init ()))
944 vlsh = ldp_fd_to_vlsh (fd);
945 if (vlsh != VLS_INVALID_HANDLE)
949 switch (addr->sa_family)
952 if (len != sizeof (struct sockaddr_in))
954 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
960 ep.is_ip4 = VPPCOM_IS_IP4;
961 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
962 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
966 if (len != sizeof (struct sockaddr_in6))
968 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
974 ep.is_ip4 = VPPCOM_IS_IP6;
975 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
976 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
980 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
981 fd, vlsh, addr->sa_family);
982 errno = EAFNOSUPPORT;
986 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
989 rv = vls_bind (vlsh, &ep);
998 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
999 rv = libc_bind (fd, addr, len);
1003 LDBG (1, "fd %d: returning %d", fd, rv);
1009 ldp_copy_ep_to_sockaddr (__SOCKADDR_ARG addr, socklen_t * __restrict len,
1010 vppcom_endpt_t * ep)
1013 int sa_len, copy_len;
1015 if ((errno = -ldp_init ()))
1018 if (addr && len && ep)
1020 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1021 switch (addr->sa_family)
1024 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1025 if (*len > sizeof (struct sockaddr_in))
1026 *len = sizeof (struct sockaddr_in);
1027 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1028 copy_len = *len - sa_len;
1030 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1035 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1036 if (*len > sizeof (struct sockaddr_in6))
1037 *len = sizeof (struct sockaddr_in6);
1038 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1039 copy_len = *len - sa_len;
1041 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1042 __in6_u.__u6_addr8, ep->ip, copy_len);
1055 getsockname (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1060 if ((errno = -ldp_init ()))
1063 vlsh = ldp_fd_to_vlsh (fd);
1064 if (vlsh != VLS_INVALID_HANDLE)
1067 u8 addr_buf[sizeof (struct in6_addr)];
1068 u32 size = sizeof (ep);
1072 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1073 if (rv != VPPCOM_OK)
1080 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1081 if (rv != VPPCOM_OK)
1090 rv = libc_getsockname (fd, addr, len);
1097 connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1102 if ((errno = -ldp_init ()))
1107 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1113 vlsh = ldp_fd_to_vlsh (fd);
1114 if (vlsh != VLS_INVALID_HANDLE)
1118 switch (addr->sa_family)
1121 if (len != sizeof (struct sockaddr_in))
1123 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1129 ep.is_ip4 = VPPCOM_IS_IP4;
1130 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1131 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1135 if (len != sizeof (struct sockaddr_in6))
1137 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1143 ep.is_ip4 = VPPCOM_IS_IP6;
1144 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1145 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1149 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1150 fd, vlsh, addr->sa_family);
1151 errno = EAFNOSUPPORT;
1155 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1158 rv = vls_connect (vlsh, &ep);
1159 if (rv != VPPCOM_OK)
1167 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1170 rv = libc_connect (fd, addr, len);
1174 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1179 getpeername (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1184 if ((errno = -ldp_init ()))
1187 vlsh = ldp_fd_to_vlsh (fd);
1188 if (vlsh != VLS_INVALID_HANDLE)
1191 u8 addr_buf[sizeof (struct in6_addr)];
1192 u32 size = sizeof (ep);
1195 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1196 if (rv != VPPCOM_OK)
1203 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1204 if (rv != VPPCOM_OK)
1213 rv = libc_getpeername (fd, addr, len);
1220 send (int fd, const void *buf, size_t n, int flags)
1222 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1225 if ((errno = -ldp_init ()))
1228 if (vlsh != VLS_INVALID_HANDLE)
1230 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1231 if (size < VPPCOM_OK)
1239 size = libc_send (fd, buf, n, flags);
1246 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1248 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1252 if ((errno = -ldp_init ()))
1255 vlsh = ldp_fd_to_vlsh (out_fd);
1256 if (vlsh != VLS_INVALID_HANDLE)
1259 ssize_t results = 0;
1260 size_t n_bytes_left = len;
1261 size_t bytes_to_read;
1264 u32 flags, flags_len = sizeof (flags);
1266 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1267 if (PREDICT_FALSE (rv != VPPCOM_OK))
1269 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1270 out_fd, vlsh, rv, vppcom_retval_str (rv));
1272 vec_reset_length (ldpw->io_buffer);
1280 off_t off = lseek (in_fd, *offset, SEEK_SET);
1281 if (PREDICT_FALSE (off == -1))
1287 ASSERT (off == *offset);
1292 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1295 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %d (%s)!",
1296 out_fd, vlsh, size, vppcom_retval_str (size));
1297 vec_reset_length (ldpw->io_buffer);
1303 bytes_to_read = size;
1304 if (bytes_to_read == 0)
1306 if (flags & O_NONBLOCK)
1315 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1316 vec_validate (ldpw->io_buffer, bytes_to_read);
1317 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1322 vec_reset_length (ldpw->io_buffer);
1329 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1332 if (size == VPPCOM_EAGAIN)
1334 if (flags & O_NONBLOCK)
1345 vec_reset_length (ldpw->io_buffer);
1354 ASSERT (n_bytes_left >= nbytes);
1355 n_bytes_left = n_bytes_left - nbytes;
1357 while (n_bytes_left > 0);
1360 vec_reset_length (ldpw->io_buffer);
1363 off_t off = lseek (in_fd, *offset, SEEK_SET);
1364 if (PREDICT_FALSE (off == -1))
1370 ASSERT (off == *offset);
1371 *offset += results + 1;
1383 size = libc_sendfile (out_fd, in_fd, offset, len);
1391 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1393 return sendfile (out_fd, in_fd, offset, len);
1397 recv (int fd, void *buf, size_t n, int flags)
1402 if ((errno = -ldp_init ()))
1405 vlsh = ldp_fd_to_vlsh (fd);
1406 if (vlsh != VLS_INVALID_HANDLE)
1408 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1414 size = libc_recv (fd, buf, n, flags);
1421 sendto (int fd, const void *buf, size_t n, int flags,
1422 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1427 if ((errno = -ldp_init ()))
1430 vlsh = ldp_fd_to_vlsh (fd);
1431 if (vlsh != INVALID_SESSION_ID)
1433 vppcom_endpt_t *ep = 0;
1439 switch (addr->sa_family)
1442 ep->is_ip4 = VPPCOM_IS_IP4;
1444 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1446 (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1450 ep->is_ip4 = VPPCOM_IS_IP6;
1452 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1454 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1458 errno = EAFNOSUPPORT;
1464 size = vls_sendto (vlsh, (void *) buf, n, flags, ep);
1473 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1481 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1482 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1487 if ((errno = -ldp_init ()))
1490 sid = ldp_fd_to_vlsh (fd);
1491 if (sid != VLS_INVALID_HANDLE)
1494 u8 src_addr[sizeof (struct sockaddr_in6)];
1499 size = vls_recvfrom (sid, buf, n, flags, &ep);
1503 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1509 size = vls_recvfrom (sid, buf, n, flags, NULL);
1519 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1526 sendmsg (int fd, const struct msghdr * message, int flags)
1531 if ((errno = -ldp_init ()))
1534 vlsh = ldp_fd_to_vlsh (fd);
1535 if (vlsh != VLS_INVALID_HANDLE)
1537 LDBG (0, "LDP-TBD");
1543 size = libc_sendmsg (fd, message, flags);
1551 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1554 const char *func_str;
1555 u32 sh = ldp_fd_to_vlsh (fd);
1557 if ((errno = -ldp_init ()))
1560 if (sh != INVALID_SESSION_ID)
1562 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1568 func_str = "libc_sendmmsg";
1571 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1572 "vmessages %p, vlen %u, flags 0x%x",
1573 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1575 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1582 int errno_val = errno;
1584 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1585 "rv %d, errno = %d", getpid (), fd, fd,
1586 func_str, size, errno_val);
1590 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1591 getpid (), fd, fd, size, size);
1598 recvmsg (int fd, struct msghdr * message, int flags)
1603 if ((errno = -ldp_init ()))
1606 vlsh = ldp_fd_to_vlsh (fd);
1607 if (vlsh != VLS_INVALID_HANDLE)
1609 LDBG (0, "LDP-TBD");
1615 size = libc_recvmsg (fd, message, flags);
1623 recvmmsg (int fd, struct mmsghdr *vmessages,
1624 unsigned int vlen, int flags, struct timespec *tmo)
1627 const char *func_str;
1628 u32 sh = ldp_fd_to_vlsh (fd);
1630 if ((errno = -ldp_init ()))
1633 if (sh != INVALID_SESSION_ID)
1635 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1641 func_str = "libc_recvmmsg";
1644 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1645 "vmessages %p, vlen %u, flags 0x%x, tmo %p",
1646 getpid (), fd, fd, func_str, vmessages, vlen,
1649 size = libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1656 int errno_val = errno;
1658 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1659 "rv %d, errno = %d", getpid (), fd, fd,
1660 func_str, size, errno_val);
1664 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1665 getpid (), fd, fd, size, size);
1672 getsockopt (int fd, int level, int optname,
1673 void *__restrict optval, socklen_t * __restrict optlen)
1678 if ((errno = -ldp_init ()))
1681 vlsh = ldp_fd_to_vlsh (fd);
1682 if (vlsh != VLS_INVALID_HANDLE)
1692 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
1696 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
1700 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
1704 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
1708 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
1710 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
1711 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
1712 memset (optval, 0, *optlen);
1718 case TCP_CONGESTION:
1719 strcpy (optval, "cubic");
1720 *optlen = strlen ("cubic");
1724 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
1725 "optname %d unsupported!", fd, vlsh, optname);
1733 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
1736 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
1737 "optname %d unsupported!", fd, vlsh, optname);
1745 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
1748 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
1751 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
1752 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
1755 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
1759 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
1763 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
1766 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
1769 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
1772 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
1773 "optname %d unsupported!", fd, vlsh, optname);
1781 if (rv != VPPCOM_OK)
1789 rv = libc_getsockopt (fd, level, optname, optval, optlen);
1796 setsockopt (int fd, int level, int optname,
1797 const void *optval, socklen_t optlen)
1802 if ((errno = -ldp_init ()))
1805 vlsh = ldp_fd_to_vlsh (fd);
1806 if (vlsh != VLS_INVALID_HANDLE)
1816 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
1817 (void *) optval, &optlen);
1820 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
1821 (void *) optval, &optlen);
1824 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
1825 (void *) optval, &optlen);
1828 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
1829 (void *) optval, &optlen);
1831 case TCP_CONGESTION:
1836 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
1837 "optname %d unsupported!", fd, vlsh, optname);
1845 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
1846 (void *) optval, &optlen);
1849 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
1850 "optname %d unsupported!", fd, vlsh, optname);
1858 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
1859 (void *) optval, &optlen);
1862 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
1863 (void *) optval, &optlen);
1866 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
1867 (void *) optval, &optlen);
1870 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
1871 "optname %d unsupported!", fd, vlsh, optname);
1879 if (rv != VPPCOM_OK)
1887 rv = libc_setsockopt (fd, level, optname, optval, optlen);
1894 listen (int fd, int n)
1899 if ((errno = -ldp_init ()))
1902 vlsh = ldp_fd_to_vlsh (fd);
1903 if (vlsh != VLS_INVALID_HANDLE)
1905 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
1907 rv = vls_listen (vlsh, n);
1908 if (rv != VPPCOM_OK)
1916 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
1917 rv = libc_listen (fd, n);
1920 LDBG (1, "fd %d: returning %d", fd, rv);
1925 ldp_accept4 (int listen_fd, __SOCKADDR_ARG addr,
1926 socklen_t * __restrict addr_len, int flags)
1928 vls_handle_t listen_vlsh, accept_vlsh;
1931 if ((errno = -ldp_init ()))
1934 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
1935 if (listen_vlsh != VLS_INVALID_HANDLE)
1938 u8 src_addr[sizeof (struct sockaddr_in6)];
1939 memset (&ep, 0, sizeof (ep));
1942 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
1943 " ep %p, flags 0x%x", listen_fd, listen_vlsh, ep, flags);
1945 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
1946 if (accept_vlsh < 0)
1948 errno = -accept_vlsh;
1953 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1954 if (rv != VPPCOM_OK)
1956 (void) vls_close (accept_vlsh);
1962 rv = ldp_vlsh_to_fd (accept_vlsh);
1968 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
1969 " flags 0x%x", listen_fd, addr, addr_len, flags);
1971 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
1974 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
1980 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
1983 return ldp_accept4 (fd, addr, addr_len, flags);
1987 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1989 return ldp_accept4 (fd, addr, addr_len, 0);
1993 shutdown (int fd, int how)
1997 u32 flags_len = sizeof (flags);
1999 if ((errno = -ldp_init ()))
2002 vlsh = ldp_fd_to_vlsh (fd);
2003 if (vlsh != VLS_INVALID_HANDLE)
2005 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2007 if (vls_attr (vlsh, VPPCOM_ATTR_SET_SHUT, &how, &flags_len))
2013 if (vls_attr (vlsh, VPPCOM_ATTR_GET_SHUT, &flags, &flags_len))
2019 if (flags == SHUT_RDWR)
2024 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2025 rv = libc_shutdown (fd, how);
2032 epoll_create1 (int flags)
2034 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2038 if ((errno = -ldp_init ()))
2041 if (ldp->vcl_needs_real_epoll)
2043 rv = libc_epoll_create1 (flags);
2044 ldp->vcl_needs_real_epoll = 0;
2045 ldpw->vcl_mq_epfd = rv;
2046 LDBG (0, "created vcl epfd %u", rv);
2050 vlsh = vls_epoll_create ();
2051 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2058 rv = ldp_vlsh_to_fd (vlsh);
2060 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2065 epoll_create (int size)
2067 return epoll_create1 (0);
2071 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2073 vls_handle_t vep_vlsh, vlsh;
2076 if ((errno = -ldp_init ()))
2079 vep_vlsh = ldp_fd_to_vlsh (epfd);
2080 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2082 /* The LDP epoll_create1 always creates VCL epfd's.
2083 * The app should never have a kernel base epoll fd unless it
2084 * was acquired outside of the LD_PRELOAD process context.
2085 * In any case, if we get one, punt it to libc_epoll_ctl.
2087 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2088 " event %p", epfd, op, fd, event);
2090 rv = libc_epoll_ctl (epfd, op, fd, event);
2094 vlsh = ldp_fd_to_vlsh (fd);
2096 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2099 if (vlsh != VLS_INVALID_HANDLE)
2101 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2102 " event %p", epfd, vep_vlsh, vlsh, event);
2104 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2105 if (rv != VPPCOM_OK)
2114 u32 size = sizeof (epfd);
2116 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2119 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2120 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2122 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2129 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2138 else if (PREDICT_FALSE (libc_epfd < 0))
2145 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2146 " event %p", epfd, libc_epfd, op, fd, event);
2148 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2156 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2157 int timeout, const sigset_t * sigmask)
2159 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2160 double time_to_wait = (double) 0, max_time;
2161 int libc_epfd, rv = 0;
2162 vls_handle_t ep_vlsh;
2164 if ((errno = -ldp_init ()))
2167 if (PREDICT_FALSE (!events || (timeout < -1)))
2173 if (epfd == ldpw->vcl_mq_epfd)
2174 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2176 ep_vlsh = ldp_fd_to_vlsh (epfd);
2177 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2179 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2184 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2185 clib_time_init (&ldpw->clib_time);
2186 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2187 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2189 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2190 if (PREDICT_FALSE (libc_epfd < 0))
2197 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2198 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2199 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2202 if (!ldpw->epoll_wait_vcl)
2204 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2207 ldpw->epoll_wait_vcl = 1;
2218 ldpw->epoll_wait_vcl = 0;
2222 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2227 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2234 epoll_pwait (int epfd, struct epoll_event *events,
2235 int maxevents, int timeout, const sigset_t * sigmask)
2237 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2241 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2243 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2247 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2249 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2250 int rv, i, n_revents = 0;
2255 LDBG (3, "fds %p, nfds %d, timeout %d", fds, nfds, timeout);
2257 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2258 clib_time_init (&ldpw->clib_time);
2260 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2261 max_time += clib_time_now (&ldpw->clib_time);
2263 for (i = 0; i < nfds; i++)
2268 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2269 if (vlsh != VLS_INVALID_HANDLE)
2271 fds[i].fd = -fds[i].fd;
2272 vec_add2 (ldpw->vcl_poll, vp, 1);
2274 vp->sh = vlsh_to_sh (vlsh);
2275 vp->events = fds[i].events;
2276 #ifdef __USE_XOPEN2K
2277 if (fds[i].events & POLLRDNORM)
2278 vp->events |= POLLIN;
2279 if (fds[i].events & POLLWRNORM)
2280 vp->events |= POLLOUT;
2282 vp->revents = fds[i].revents;
2286 vec_add1 (ldpw->libc_poll, fds[i]);
2287 vec_add1 (ldpw->libc_poll_idxs, i);
2293 if (vec_len (ldpw->vcl_poll))
2295 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2306 if (vec_len (ldpw->libc_poll))
2308 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2321 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2325 vec_foreach (vp, ldpw->vcl_poll)
2327 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2328 fds[vp->fds_ndx].revents = vp->revents;
2329 #ifdef __USE_XOPEN2K
2330 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2331 (fds[vp->fds_ndx].events & POLLRDNORM))
2332 fds[vp->fds_ndx].revents |= POLLRDNORM;
2333 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2334 (fds[vp->fds_ndx].events & POLLWRNORM))
2335 fds[vp->fds_ndx].revents |= POLLWRNORM;
2338 vec_reset_length (ldpw->vcl_poll);
2340 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2342 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2344 vec_reset_length (ldpw->libc_poll_idxs);
2345 vec_reset_length (ldpw->libc_poll);
2352 ppoll (struct pollfd *fds, nfds_t nfds,
2353 const struct timespec *timeout, const sigset_t * sigmask)
2355 if ((errno = -ldp_init ()))
2358 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2366 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2368 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2371 * This function is called when the library is loaded
2374 ldp_constructor (void)
2376 swrap_constructor ();
2377 if (ldp_init () != 0)
2378 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2380 else if (LDP_DEBUG > 0)
2381 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2385 * This function is called when the library is unloaded
2388 ldp_destructor (void)
2391 swrap_destructor ();
2396 /* Don't use clib_warning() here because that calls writev()
2397 * which will call ldp_init().
2400 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2401 __func__, __LINE__, getpid ());
2406 * fd.io coding-style-patch-verification: ON
2409 * eval: (c-set-style "gnu")