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);
264 clib_time_init (&ldpw->clib_time);
265 LDBG (0, "LDP initialization: done!");
276 if ((errno = -ldp_init ()))
279 vlsh = ldp_fd_to_vlsh (fd);
280 if (vlsh != VLS_INVALID_HANDLE)
282 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
285 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
287 rv = libc_close (epfd);
290 u32 size = sizeof (epfd);
293 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
296 else if (PREDICT_FALSE (epfd < 0))
303 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
305 rv = vls_close (vlsh);
314 LDBG (0, "fd %d: calling libc_close", fd);
315 rv = libc_close (fd);
323 read (int fd, void *buf, size_t nbytes)
328 if ((errno = -ldp_init ()))
331 vlsh = ldp_fd_to_vlsh (fd);
332 if (vlsh != VLS_INVALID_HANDLE)
334 size = vls_read (vlsh, buf, nbytes);
343 size = libc_read (fd, buf, nbytes);
350 readv (int fd, const struct iovec * iov, int iovcnt)
352 int rv = 0, i, total = 0;
356 if ((errno = -ldp_init ()))
359 vlsh = ldp_fd_to_vlsh (fd);
360 if (vlsh != VLS_INVALID_HANDLE)
364 for (i = 0; i < iovcnt; ++i)
366 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
372 if (rv < iov[i].iov_len)
377 while ((rv >= 0) && (total == 0));
389 size = libc_readv (fd, iov, iovcnt);
396 write (int fd, const void *buf, size_t nbytes)
401 if ((errno = -ldp_init ()))
404 vlsh = ldp_fd_to_vlsh (fd);
405 if (vlsh != VLS_INVALID_HANDLE)
407 size = vls_write_msg (vlsh, (void *) buf, nbytes);
416 size = libc_write (fd, buf, nbytes);
423 writev (int fd, const struct iovec * iov, int iovcnt)
425 ssize_t size = 0, total = 0;
429 if ((errno = -ldp_init ()))
432 vlsh = ldp_fd_to_vlsh (fd);
433 if (vlsh != VLS_INVALID_HANDLE)
437 for (i = 0; i < iovcnt; ++i)
439 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
445 if (rv < iov[i].iov_len)
450 while ((rv >= 0) && (total == 0));
462 size = libc_writev (fd, iov, iovcnt);
469 fcntl (int fd, int cmd, ...)
475 if ((errno = -ldp_init ()))
480 vlsh = ldp_fd_to_vlsh (fd);
481 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
482 if (vlsh != VLS_INVALID_HANDLE)
484 int flags = va_arg (ap, int);
487 size = sizeof (flags);
492 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
496 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
501 /* TODO handle this */
502 LDBG (0, "F_SETFD ignored flags %u", flags);
517 rv = libc_vfcntl (fd, cmd, ap);
526 ioctl (int fd, unsigned long int cmd, ...)
532 if ((errno = -ldp_init ()))
537 vlsh = ldp_fd_to_vlsh (fd);
538 if (vlsh != VLS_INVALID_HANDLE)
543 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
548 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
549 u32 size = sizeof (flags);
551 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
552 * non-blocking, the flags should be read here and merged
555 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
571 rv = libc_vioctl (fd, cmd, ap);
579 ldp_select_init_maps (fd_set * __restrict original,
580 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
581 clib_bitmap_t ** vclb, int nfds, u32 minbits,
582 u32 n_bytes, uword * si_bits, uword * libc_bits)
584 uword si_bits_set, libc_bits_set;
588 clib_bitmap_validate (*vclb, minbits);
589 clib_bitmap_validate (*libcb, minbits);
590 clib_bitmap_validate (*resultb, minbits);
591 clib_memcpy_fast (*resultb, original, n_bytes);
592 memset (original, 0, n_bytes);
595 clib_bitmap_foreach (fd, *resultb, ({
598 vlsh = ldp_fd_to_vlsh (fd);
599 if (vlsh == VLS_INVALID_HANDLE)
600 clib_bitmap_set_no_check (*libcb, fd, 1);
602 clib_bitmap_set_no_check (*vclb, vlsh_to_session_index (vlsh), 1);
606 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
607 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
609 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
610 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
614 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
624 clib_bitmap_foreach (si, vclb, ({
625 vlsh = vls_session_index_to_vlsh (si);
626 fd = ldp_vlsh_to_fd (vlsh);
627 if (PREDICT_FALSE (fd < 0))
640 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
645 clib_bitmap_foreach (fd, result, ({
646 FD_SET ((int)fd, libcb);
652 ldp_pselect (int nfds, fd_set * __restrict readfds,
653 fd_set * __restrict writefds,
654 fd_set * __restrict exceptfds,
655 const struct timespec *__restrict timeout,
656 const __sigset_t * __restrict sigmask)
658 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
659 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
660 struct timespec libc_tspec = { 0 };
661 f64 time_out, vcl_timeout = 0;
662 uword si_bits, libc_bits;
663 int rv, bits_set = 0;
673 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
674 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
676 /* select as fine grained sleep */
679 time_out += clib_time_now (&ldpw->clib_time);
680 while (clib_time_now (&ldpw->clib_time) < time_out)
693 if (nfds <= ldp->vlsh_bit_val)
695 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
700 si_bits = libc_bits = 0;
701 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
704 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
705 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
706 &si_bits, &libc_bits);
708 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
709 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
710 minbits, n_bytes, &si_bits, &libc_bits);
712 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
713 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
714 minbits, n_bytes, &si_bits, &libc_bits);
716 if (PREDICT_FALSE (!si_bits && !libc_bits))
723 libc_tspec = si_bits ? libc_tspec : *timeout;
730 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
731 vec_len (ldpw->rd_bitmap) *
732 sizeof (clib_bitmap_t));
734 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
735 vec_len (ldpw->wr_bitmap) *
736 sizeof (clib_bitmap_t));
738 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
739 vec_len (ldpw->ex_bitmap) *
740 sizeof (clib_bitmap_t));
742 rv = vppcom_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
743 writefds ? ldpw->wr_bitmap : NULL,
744 exceptfds ? ldpw->ex_bitmap : NULL,
753 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
759 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
765 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
776 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
777 vec_len (ldpw->libc_rd_bitmap) *
778 sizeof (clib_bitmap_t));
780 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
781 vec_len (ldpw->libc_wr_bitmap) *
782 sizeof (clib_bitmap_t));
784 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
785 vec_len (ldpw->libc_ex_bitmap) *
786 sizeof (clib_bitmap_t));
788 rv = libc_pselect (libc_bits,
789 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
790 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
791 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
792 &libc_tspec, sigmask);
795 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
796 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
797 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
808 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
812 /* TBD: set timeout to amount of time left */
813 clib_bitmap_zero (ldpw->rd_bitmap);
814 clib_bitmap_zero (ldpw->si_rd_bitmap);
815 clib_bitmap_zero (ldpw->libc_rd_bitmap);
816 clib_bitmap_zero (ldpw->wr_bitmap);
817 clib_bitmap_zero (ldpw->si_wr_bitmap);
818 clib_bitmap_zero (ldpw->libc_wr_bitmap);
819 clib_bitmap_zero (ldpw->ex_bitmap);
820 clib_bitmap_zero (ldpw->si_ex_bitmap);
821 clib_bitmap_zero (ldpw->libc_ex_bitmap);
827 select (int nfds, fd_set * __restrict readfds,
828 fd_set * __restrict writefds,
829 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
831 struct timespec tspec;
835 tspec.tv_sec = timeout->tv_sec;
836 tspec.tv_nsec = timeout->tv_usec * 1000;
838 return ldp_pselect (nfds, readfds, writefds, exceptfds,
839 timeout ? &tspec : NULL, NULL);
844 pselect (int nfds, fd_set * __restrict readfds,
845 fd_set * __restrict writefds,
846 fd_set * __restrict exceptfds,
847 const struct timespec *__restrict timeout,
848 const __sigset_t * __restrict sigmask)
850 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
855 socket (int domain, int type, int protocol)
857 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
858 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
861 if ((errno = -ldp_init ()))
864 if (((domain == AF_INET) || (domain == AF_INET6)) &&
865 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
867 u8 proto = ((sock_type == SOCK_DGRAM) ?
868 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
870 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
871 proto, vppcom_proto_str (proto), is_nonblocking);
873 vlsh = vls_create (proto, is_nonblocking);
881 rv = ldp_vlsh_to_fd (vlsh);
886 LDBG (0, "calling libc_socket");
887 rv = libc_socket (domain, type, protocol);
894 * Create two new sockets, of type TYPE in domain DOMAIN and using
895 * protocol PROTOCOL, which are connected to each other, and put file
896 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
897 * one will be chosen automatically.
898 * Returns 0 on success, -1 for errors.
901 socketpair (int domain, int type, int protocol, int fds[2])
903 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
905 if ((errno = -ldp_init ()))
908 if (((domain == AF_INET) || (domain == AF_INET6)) &&
909 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
917 LDBG (1, "calling libc_socketpair");
918 rv = libc_socketpair (domain, type, protocol, fds);
925 bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
930 if ((errno = -ldp_init ()))
933 vlsh = ldp_fd_to_vlsh (fd);
934 if (vlsh != VLS_INVALID_HANDLE)
938 switch (addr->sa_family)
941 if (len != sizeof (struct sockaddr_in))
943 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
949 ep.is_ip4 = VPPCOM_IS_IP4;
950 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
951 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
955 if (len != sizeof (struct sockaddr_in6))
957 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
963 ep.is_ip4 = VPPCOM_IS_IP6;
964 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
965 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
969 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
970 fd, vlsh, addr->sa_family);
971 errno = EAFNOSUPPORT;
975 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
978 rv = vls_bind (vlsh, &ep);
987 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
988 rv = libc_bind (fd, addr, len);
992 LDBG (1, "fd %d: returning %d", fd, rv);
998 ldp_copy_ep_to_sockaddr (__SOCKADDR_ARG addr, socklen_t * __restrict len,
1002 int sa_len, copy_len;
1004 if ((errno = -ldp_init ()))
1007 if (addr && len && ep)
1009 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1010 switch (addr->sa_family)
1013 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1014 if (*len > sizeof (struct sockaddr_in))
1015 *len = sizeof (struct sockaddr_in);
1016 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1017 copy_len = *len - sa_len;
1019 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1024 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1025 if (*len > sizeof (struct sockaddr_in6))
1026 *len = sizeof (struct sockaddr_in6);
1027 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1028 copy_len = *len - sa_len;
1030 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1031 __in6_u.__u6_addr8, ep->ip, copy_len);
1044 getsockname (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1049 if ((errno = -ldp_init ()))
1052 vlsh = ldp_fd_to_vlsh (fd);
1053 if (vlsh != VLS_INVALID_HANDLE)
1056 u8 addr_buf[sizeof (struct in6_addr)];
1057 u32 size = sizeof (ep);
1061 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1062 if (rv != VPPCOM_OK)
1069 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1070 if (rv != VPPCOM_OK)
1079 rv = libc_getsockname (fd, addr, len);
1086 connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1091 if ((errno = -ldp_init ()))
1096 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1102 vlsh = ldp_fd_to_vlsh (fd);
1103 if (vlsh != VLS_INVALID_HANDLE)
1107 switch (addr->sa_family)
1110 if (len != sizeof (struct sockaddr_in))
1112 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1118 ep.is_ip4 = VPPCOM_IS_IP4;
1119 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1120 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1124 if (len != sizeof (struct sockaddr_in6))
1126 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1132 ep.is_ip4 = VPPCOM_IS_IP6;
1133 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1134 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1138 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1139 fd, vlsh, addr->sa_family);
1140 errno = EAFNOSUPPORT;
1144 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1147 rv = vls_connect (vlsh, &ep);
1148 if (rv != VPPCOM_OK)
1156 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1159 rv = libc_connect (fd, addr, len);
1163 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1168 getpeername (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1173 if ((errno = -ldp_init ()))
1176 vlsh = ldp_fd_to_vlsh (fd);
1177 if (vlsh != VLS_INVALID_HANDLE)
1180 u8 addr_buf[sizeof (struct in6_addr)];
1181 u32 size = sizeof (ep);
1184 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1185 if (rv != VPPCOM_OK)
1192 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1193 if (rv != VPPCOM_OK)
1202 rv = libc_getpeername (fd, addr, len);
1209 send (int fd, const void *buf, size_t n, int flags)
1211 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1214 if ((errno = -ldp_init ()))
1217 if (vlsh != VLS_INVALID_HANDLE)
1219 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1220 if (size < VPPCOM_OK)
1228 size = libc_send (fd, buf, n, flags);
1235 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1237 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1241 if ((errno = -ldp_init ()))
1244 vlsh = ldp_fd_to_vlsh (out_fd);
1245 if (vlsh != VLS_INVALID_HANDLE)
1248 ssize_t results = 0;
1249 size_t n_bytes_left = len;
1250 size_t bytes_to_read;
1253 u32 flags, flags_len = sizeof (flags);
1255 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1256 if (PREDICT_FALSE (rv != VPPCOM_OK))
1258 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1259 out_fd, vlsh, rv, vppcom_retval_str (rv));
1261 vec_reset_length (ldpw->io_buffer);
1269 off_t off = lseek (in_fd, *offset, SEEK_SET);
1270 if (PREDICT_FALSE (off == -1))
1276 ASSERT (off == *offset);
1281 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1284 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %d (%s)!",
1285 out_fd, vlsh, size, vppcom_retval_str (size));
1286 vec_reset_length (ldpw->io_buffer);
1292 bytes_to_read = size;
1293 if (bytes_to_read == 0)
1295 if (flags & O_NONBLOCK)
1304 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1305 vec_validate (ldpw->io_buffer, bytes_to_read);
1306 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1311 vec_reset_length (ldpw->io_buffer);
1318 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1321 if (size == VPPCOM_EAGAIN)
1323 if (flags & O_NONBLOCK)
1334 vec_reset_length (ldpw->io_buffer);
1343 ASSERT (n_bytes_left >= nbytes);
1344 n_bytes_left = n_bytes_left - nbytes;
1346 while (n_bytes_left > 0);
1349 vec_reset_length (ldpw->io_buffer);
1352 off_t off = lseek (in_fd, *offset, SEEK_SET);
1353 if (PREDICT_FALSE (off == -1))
1359 ASSERT (off == *offset);
1360 *offset += results + 1;
1372 size = libc_sendfile (out_fd, in_fd, offset, len);
1380 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1382 return sendfile (out_fd, in_fd, offset, len);
1386 recv (int fd, void *buf, size_t n, int flags)
1391 if ((errno = -ldp_init ()))
1394 vlsh = ldp_fd_to_vlsh (fd);
1395 if (vlsh != VLS_INVALID_HANDLE)
1397 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1403 size = libc_recv (fd, buf, n, flags);
1410 sendto (int fd, const void *buf, size_t n, int flags,
1411 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1416 if ((errno = -ldp_init ()))
1419 vlsh = ldp_fd_to_vlsh (fd);
1420 if (vlsh != INVALID_SESSION_ID)
1422 vppcom_endpt_t *ep = 0;
1428 switch (addr->sa_family)
1431 ep->is_ip4 = VPPCOM_IS_IP4;
1433 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1435 (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1439 ep->is_ip4 = VPPCOM_IS_IP6;
1441 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1443 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1447 errno = EAFNOSUPPORT;
1453 size = vls_sendto (vlsh, (void *) buf, n, flags, ep);
1462 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1470 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1471 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1476 if ((errno = -ldp_init ()))
1479 sid = ldp_fd_to_vlsh (fd);
1480 if (sid != VLS_INVALID_HANDLE)
1483 u8 src_addr[sizeof (struct sockaddr_in6)];
1488 size = vls_recvfrom (sid, buf, n, flags, &ep);
1491 size = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1494 size = vls_recvfrom (sid, buf, n, flags, NULL);
1504 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1511 sendmsg (int fd, const struct msghdr * message, int flags)
1516 if ((errno = -ldp_init ()))
1519 vlsh = ldp_fd_to_vlsh (fd);
1520 if (vlsh != VLS_INVALID_HANDLE)
1522 LDBG (0, "LDP-TBD");
1528 size = libc_sendmsg (fd, message, flags);
1536 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1539 const char *func_str;
1540 u32 sh = ldp_fd_to_vlsh (fd);
1542 if ((errno = -ldp_init ()))
1545 if (sh != INVALID_SESSION_ID)
1547 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1553 func_str = "libc_sendmmsg";
1556 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1557 "vmessages %p, vlen %u, flags 0x%x",
1558 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1560 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1567 int errno_val = errno;
1569 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1570 "rv %d, errno = %d", getpid (), fd, fd,
1571 func_str, size, errno_val);
1575 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1576 getpid (), fd, fd, size, size);
1583 recvmsg (int fd, struct msghdr * message, int flags)
1588 if ((errno = -ldp_init ()))
1591 vlsh = ldp_fd_to_vlsh (fd);
1592 if (vlsh != VLS_INVALID_HANDLE)
1594 LDBG (0, "LDP-TBD");
1600 size = libc_recvmsg (fd, message, flags);
1608 recvmmsg (int fd, struct mmsghdr *vmessages,
1609 unsigned int vlen, int flags, struct timespec *tmo)
1612 const char *func_str;
1613 u32 sh = ldp_fd_to_vlsh (fd);
1615 if ((errno = -ldp_init ()))
1618 if (sh != INVALID_SESSION_ID)
1620 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1626 func_str = "libc_recvmmsg";
1629 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1630 "vmessages %p, vlen %u, flags 0x%x, tmo %p",
1631 getpid (), fd, fd, func_str, vmessages, vlen,
1634 size = libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1641 int errno_val = errno;
1643 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1644 "rv %d, errno = %d", getpid (), fd, fd,
1645 func_str, size, errno_val);
1649 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1650 getpid (), fd, fd, size, size);
1657 getsockopt (int fd, int level, int optname,
1658 void *__restrict optval, socklen_t * __restrict optlen)
1663 if ((errno = -ldp_init ()))
1666 vlsh = ldp_fd_to_vlsh (fd);
1667 if (vlsh != VLS_INVALID_HANDLE)
1677 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
1681 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
1685 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
1689 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
1693 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
1695 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
1696 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
1697 memset (optval, 0, *optlen);
1704 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
1705 "optname %d unsupported!", fd, vlsh, optname);
1713 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
1716 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
1717 "optname %d unsupported!", fd, vlsh, optname);
1725 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
1728 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
1731 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
1732 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
1735 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
1739 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
1743 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
1746 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
1749 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
1752 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
1753 "optname %d unsupported!", fd, vlsh, optname);
1761 if (rv != VPPCOM_OK)
1769 rv = libc_getsockopt (fd, level, optname, optval, optlen);
1776 setsockopt (int fd, int level, int optname,
1777 const void *optval, socklen_t optlen)
1782 if ((errno = -ldp_init ()))
1785 vlsh = ldp_fd_to_vlsh (fd);
1786 if (vlsh != VLS_INVALID_HANDLE)
1796 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
1797 (void *) optval, &optlen);
1800 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
1801 (void *) optval, &optlen);
1804 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
1805 (void *) optval, &optlen);
1808 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
1809 (void *) optval, &optlen);
1812 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
1813 "optname %d unsupported!", fd, vlsh, optname);
1821 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
1822 (void *) optval, &optlen);
1825 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
1826 "optname %d unsupported!", fd, vlsh, optname);
1834 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
1835 (void *) optval, &optlen);
1838 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
1839 (void *) optval, &optlen);
1842 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
1843 (void *) optval, &optlen);
1846 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
1847 "optname %d unsupported!", fd, vlsh, optname);
1855 if (rv != VPPCOM_OK)
1863 rv = libc_setsockopt (fd, level, optname, optval, optlen);
1870 listen (int fd, int n)
1875 if ((errno = -ldp_init ()))
1878 vlsh = ldp_fd_to_vlsh (fd);
1879 if (vlsh != VLS_INVALID_HANDLE)
1881 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
1883 rv = vls_listen (vlsh, n);
1884 if (rv != VPPCOM_OK)
1892 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
1893 rv = libc_listen (fd, n);
1896 LDBG (1, "fd %d: returning %d", fd, rv);
1901 ldp_accept4 (int listen_fd, __SOCKADDR_ARG addr,
1902 socklen_t * __restrict addr_len, int flags)
1904 vls_handle_t listen_vlsh, accept_vlsh;
1907 if ((errno = -ldp_init ()))
1910 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
1911 if (listen_vlsh != VLS_INVALID_HANDLE)
1914 u8 src_addr[sizeof (struct sockaddr_in6)];
1915 memset (&ep, 0, sizeof (ep));
1918 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
1919 " ep %p, flags 0x%x", listen_fd, listen_vlsh, ep, flags);
1921 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
1922 if (accept_vlsh < 0)
1924 errno = -accept_vlsh;
1929 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1930 if (rv != VPPCOM_OK)
1932 (void) vls_close (accept_vlsh);
1938 rv = ldp_vlsh_to_fd (accept_vlsh);
1944 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
1945 " flags 0x%x", listen_fd, addr, addr_len, flags);
1947 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
1950 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
1956 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
1959 return ldp_accept4 (fd, addr, addr_len, flags);
1963 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1965 return ldp_accept4 (fd, addr, addr_len, 0);
1969 shutdown (int fd, int how)
1973 u32 flags_len = sizeof (flags);
1975 if ((errno = -ldp_init ()))
1978 vlsh = ldp_fd_to_vlsh (fd);
1979 if (vlsh != VLS_INVALID_HANDLE)
1981 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
1983 if (vls_attr (vlsh, VPPCOM_ATTR_SET_SHUT, &how, &flags_len))
1989 if (vls_attr (vlsh, VPPCOM_ATTR_GET_SHUT, &flags, &flags_len))
1995 if (flags == SHUT_RDWR)
2000 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2001 rv = libc_shutdown (fd, how);
2008 epoll_create1 (int flags)
2010 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2014 if ((errno = -ldp_init ()))
2017 if (ldp->vcl_needs_real_epoll)
2019 rv = libc_epoll_create1 (flags);
2020 ldp->vcl_needs_real_epoll = 0;
2021 ldpw->vcl_mq_epfd = rv;
2022 LDBG (0, "created vcl epfd %u", rv);
2026 vlsh = vls_epoll_create ();
2027 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2034 rv = ldp_vlsh_to_fd (vlsh);
2036 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2041 epoll_create (int size)
2043 return epoll_create1 (0);
2047 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2049 vls_handle_t vep_vlsh, vlsh;
2052 if ((errno = -ldp_init ()))
2055 vep_vlsh = ldp_fd_to_vlsh (epfd);
2056 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2058 /* The LDP epoll_create1 always creates VCL epfd's.
2059 * The app should never have a kernel base epoll fd unless it
2060 * was acquired outside of the LD_PRELOAD process context.
2061 * In any case, if we get one, punt it to libc_epoll_ctl.
2063 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2064 " event %p", epfd, op, fd, event);
2066 rv = libc_epoll_ctl (epfd, op, fd, event);
2070 vlsh = ldp_fd_to_vlsh (fd);
2072 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2075 if (vlsh != VLS_INVALID_HANDLE)
2077 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2078 " event %p", epfd, vep_vlsh, vlsh, event);
2080 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2081 if (rv != VPPCOM_OK)
2090 u32 size = sizeof (epfd);
2092 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2095 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2096 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2098 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2105 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2114 else if (PREDICT_FALSE (libc_epfd < 0))
2121 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2122 " event %p", epfd, libc_epfd, op, fd, event);
2124 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2132 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2133 int timeout, const sigset_t * sigmask)
2135 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2136 double time_to_wait = (double) 0, time_out, now = 0;
2137 int libc_epfd, rv = 0;
2138 vls_handle_t ep_vlsh;
2140 if ((errno = -ldp_init ()))
2143 if (PREDICT_FALSE (!events || (timeout < -1)))
2149 if (epfd == ldpw->vcl_mq_epfd)
2150 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2152 ep_vlsh = ldp_fd_to_vlsh (epfd);
2153 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2155 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2160 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2161 time_out = clib_time_now (&ldpw->clib_time) + time_to_wait;
2163 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2164 if (PREDICT_FALSE (libc_epfd < 0))
2171 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2172 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2173 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait,
2177 if (!ldpw->epoll_wait_vcl)
2179 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2182 ldpw->epoll_wait_vcl = 1;
2193 ldpw->epoll_wait_vcl = 0;
2197 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2203 now = clib_time_now (&ldpw->clib_time);
2205 while (now < time_out);
2212 epoll_pwait (int epfd, struct epoll_event *events,
2213 int maxevents, int timeout, const sigset_t * sigmask)
2215 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2219 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2221 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2225 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2227 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2228 int rv, i, n_revents = 0;
2231 double wait_for_time;
2233 LDBG (3, "fds %p, nfds %d, timeout %d", fds, nfds, timeout);
2236 wait_for_time = (f64) timeout / 1000;
2240 for (i = 0; i < nfds; i++)
2245 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2246 if (vlsh != VLS_INVALID_HANDLE)
2248 fds[i].fd = -fds[i].fd;
2249 vec_add2 (ldpw->vcl_poll, vp, 1);
2251 vp->sh = vlsh_to_sh (vlsh);
2252 vp->events = fds[i].events;
2253 #ifdef __USE_XOPEN2K
2254 if (fds[i].events & POLLRDNORM)
2255 vp->events |= POLLIN;
2256 if (fds[i].events & POLLWRNORM)
2257 vp->events |= POLLOUT;
2259 vp->revents = fds[i].revents;
2263 vec_add1 (ldpw->libc_poll, fds[i]);
2264 vec_add1 (ldpw->libc_poll_idxs, i);
2270 if (vec_len (ldpw->vcl_poll))
2272 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2283 if (vec_len (ldpw->libc_poll))
2285 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2298 while ((wait_for_time == -1) ||
2299 (clib_time_now (&ldpw->clib_time) < wait_for_time));
2303 vec_foreach (vp, ldpw->vcl_poll)
2305 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2306 fds[vp->fds_ndx].revents = vp->revents;
2307 #ifdef __USE_XOPEN2K
2308 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2309 (fds[vp->fds_ndx].events & POLLRDNORM))
2310 fds[vp->fds_ndx].revents |= POLLRDNORM;
2311 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2312 (fds[vp->fds_ndx].events & POLLWRNORM))
2313 fds[vp->fds_ndx].revents |= POLLWRNORM;
2316 vec_reset_length (ldpw->vcl_poll);
2318 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2320 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2322 vec_reset_length (ldpw->libc_poll_idxs);
2323 vec_reset_length (ldpw->libc_poll);
2330 ppoll (struct pollfd *fds, nfds_t nfds,
2331 const struct timespec *timeout, const sigset_t * sigmask)
2333 if ((errno = -ldp_init ()))
2336 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2344 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2346 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2349 * This function is called when the library is loaded
2352 ldp_constructor (void)
2354 swrap_constructor ();
2355 if (ldp_init () != 0)
2356 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2358 else if (LDP_DEBUG > 0)
2359 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2363 * This function is called when the library is unloaded
2366 ldp_destructor (void)
2368 swrap_destructor ();
2372 /* Don't use clib_warning() here because that calls writev()
2373 * which will call ldp_init().
2376 printf ("%s:%d: LDP<%d>: LDP destructor: done!\n",
2377 __func__, __LINE__, getpid ());
2382 * fd.io coding-style-patch-verification: ON
2385 * eval: (c-set-style "gnu")