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 = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
743 writefds ? ldpw->wr_bitmap : NULL,
744 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
752 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
758 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
764 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
775 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
776 vec_len (ldpw->libc_rd_bitmap) *
777 sizeof (clib_bitmap_t));
779 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
780 vec_len (ldpw->libc_wr_bitmap) *
781 sizeof (clib_bitmap_t));
783 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
784 vec_len (ldpw->libc_ex_bitmap) *
785 sizeof (clib_bitmap_t));
787 rv = libc_pselect (libc_bits,
788 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
789 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
790 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
791 &libc_tspec, sigmask);
794 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
795 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
796 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
807 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
811 /* TBD: set timeout to amount of time left */
812 clib_bitmap_zero (ldpw->rd_bitmap);
813 clib_bitmap_zero (ldpw->si_rd_bitmap);
814 clib_bitmap_zero (ldpw->libc_rd_bitmap);
815 clib_bitmap_zero (ldpw->wr_bitmap);
816 clib_bitmap_zero (ldpw->si_wr_bitmap);
817 clib_bitmap_zero (ldpw->libc_wr_bitmap);
818 clib_bitmap_zero (ldpw->ex_bitmap);
819 clib_bitmap_zero (ldpw->si_ex_bitmap);
820 clib_bitmap_zero (ldpw->libc_ex_bitmap);
826 select (int nfds, fd_set * __restrict readfds,
827 fd_set * __restrict writefds,
828 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
830 struct timespec tspec;
834 tspec.tv_sec = timeout->tv_sec;
835 tspec.tv_nsec = timeout->tv_usec * 1000;
837 return ldp_pselect (nfds, readfds, writefds, exceptfds,
838 timeout ? &tspec : NULL, NULL);
843 pselect (int nfds, fd_set * __restrict readfds,
844 fd_set * __restrict writefds,
845 fd_set * __restrict exceptfds,
846 const struct timespec *__restrict timeout,
847 const __sigset_t * __restrict sigmask)
849 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
854 socket (int domain, int type, int protocol)
856 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
857 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
860 if ((errno = -ldp_init ()))
863 if (((domain == AF_INET) || (domain == AF_INET6)) &&
864 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
866 u8 proto = ((sock_type == SOCK_DGRAM) ?
867 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
869 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
870 proto, vppcom_proto_str (proto), is_nonblocking);
872 vlsh = vls_create (proto, is_nonblocking);
880 rv = ldp_vlsh_to_fd (vlsh);
885 LDBG (0, "calling libc_socket");
886 rv = libc_socket (domain, type, protocol);
893 * Create two new sockets, of type TYPE in domain DOMAIN and using
894 * protocol PROTOCOL, which are connected to each other, and put file
895 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
896 * one will be chosen automatically.
897 * Returns 0 on success, -1 for errors.
900 socketpair (int domain, int type, int protocol, int fds[2])
902 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
904 if ((errno = -ldp_init ()))
907 if (((domain == AF_INET) || (domain == AF_INET6)) &&
908 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
916 LDBG (1, "calling libc_socketpair");
917 rv = libc_socketpair (domain, type, protocol, fds);
924 bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
929 if ((errno = -ldp_init ()))
932 vlsh = ldp_fd_to_vlsh (fd);
933 if (vlsh != VLS_INVALID_HANDLE)
937 switch (addr->sa_family)
940 if (len != sizeof (struct sockaddr_in))
942 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
948 ep.is_ip4 = VPPCOM_IS_IP4;
949 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
950 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
954 if (len != sizeof (struct sockaddr_in6))
956 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
962 ep.is_ip4 = VPPCOM_IS_IP6;
963 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
964 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
968 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
969 fd, vlsh, addr->sa_family);
970 errno = EAFNOSUPPORT;
974 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
977 rv = vls_bind (vlsh, &ep);
986 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
987 rv = libc_bind (fd, addr, len);
991 LDBG (1, "fd %d: returning %d", fd, rv);
997 ldp_copy_ep_to_sockaddr (__SOCKADDR_ARG addr, socklen_t * __restrict len,
1001 int sa_len, copy_len;
1003 if ((errno = -ldp_init ()))
1006 if (addr && len && ep)
1008 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1009 switch (addr->sa_family)
1012 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1013 if (*len > sizeof (struct sockaddr_in))
1014 *len = sizeof (struct sockaddr_in);
1015 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1016 copy_len = *len - sa_len;
1018 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1023 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1024 if (*len > sizeof (struct sockaddr_in6))
1025 *len = sizeof (struct sockaddr_in6);
1026 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1027 copy_len = *len - sa_len;
1029 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1030 __in6_u.__u6_addr8, ep->ip, copy_len);
1043 getsockname (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1048 if ((errno = -ldp_init ()))
1051 vlsh = ldp_fd_to_vlsh (fd);
1052 if (vlsh != VLS_INVALID_HANDLE)
1055 u8 addr_buf[sizeof (struct in6_addr)];
1056 u32 size = sizeof (ep);
1060 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1061 if (rv != VPPCOM_OK)
1068 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1069 if (rv != VPPCOM_OK)
1078 rv = libc_getsockname (fd, addr, len);
1085 connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1090 if ((errno = -ldp_init ()))
1095 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1101 vlsh = ldp_fd_to_vlsh (fd);
1102 if (vlsh != VLS_INVALID_HANDLE)
1106 switch (addr->sa_family)
1109 if (len != sizeof (struct sockaddr_in))
1111 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1117 ep.is_ip4 = VPPCOM_IS_IP4;
1118 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1119 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1123 if (len != sizeof (struct sockaddr_in6))
1125 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1131 ep.is_ip4 = VPPCOM_IS_IP6;
1132 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1133 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1137 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1138 fd, vlsh, addr->sa_family);
1139 errno = EAFNOSUPPORT;
1143 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1146 rv = vls_connect (vlsh, &ep);
1147 if (rv != VPPCOM_OK)
1155 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1158 rv = libc_connect (fd, addr, len);
1162 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1167 getpeername (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1172 if ((errno = -ldp_init ()))
1175 vlsh = ldp_fd_to_vlsh (fd);
1176 if (vlsh != VLS_INVALID_HANDLE)
1179 u8 addr_buf[sizeof (struct in6_addr)];
1180 u32 size = sizeof (ep);
1183 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1184 if (rv != VPPCOM_OK)
1191 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1192 if (rv != VPPCOM_OK)
1201 rv = libc_getpeername (fd, addr, len);
1208 send (int fd, const void *buf, size_t n, int flags)
1210 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1213 if ((errno = -ldp_init ()))
1216 if (vlsh != VLS_INVALID_HANDLE)
1218 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1219 if (size < VPPCOM_OK)
1227 size = libc_send (fd, buf, n, flags);
1234 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1236 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1240 if ((errno = -ldp_init ()))
1243 vlsh = ldp_fd_to_vlsh (out_fd);
1244 if (vlsh != VLS_INVALID_HANDLE)
1247 ssize_t results = 0;
1248 size_t n_bytes_left = len;
1249 size_t bytes_to_read;
1252 u32 flags, flags_len = sizeof (flags);
1254 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1255 if (PREDICT_FALSE (rv != VPPCOM_OK))
1257 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1258 out_fd, vlsh, rv, vppcom_retval_str (rv));
1260 vec_reset_length (ldpw->io_buffer);
1268 off_t off = lseek (in_fd, *offset, SEEK_SET);
1269 if (PREDICT_FALSE (off == -1))
1275 ASSERT (off == *offset);
1280 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1283 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %d (%s)!",
1284 out_fd, vlsh, size, vppcom_retval_str (size));
1285 vec_reset_length (ldpw->io_buffer);
1291 bytes_to_read = size;
1292 if (bytes_to_read == 0)
1294 if (flags & O_NONBLOCK)
1303 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1304 vec_validate (ldpw->io_buffer, bytes_to_read);
1305 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1310 vec_reset_length (ldpw->io_buffer);
1317 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1320 if (size == VPPCOM_EAGAIN)
1322 if (flags & O_NONBLOCK)
1333 vec_reset_length (ldpw->io_buffer);
1342 ASSERT (n_bytes_left >= nbytes);
1343 n_bytes_left = n_bytes_left - nbytes;
1345 while (n_bytes_left > 0);
1348 vec_reset_length (ldpw->io_buffer);
1351 off_t off = lseek (in_fd, *offset, SEEK_SET);
1352 if (PREDICT_FALSE (off == -1))
1358 ASSERT (off == *offset);
1359 *offset += results + 1;
1371 size = libc_sendfile (out_fd, in_fd, offset, len);
1379 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1381 return sendfile (out_fd, in_fd, offset, len);
1385 recv (int fd, void *buf, size_t n, int flags)
1390 if ((errno = -ldp_init ()))
1393 vlsh = ldp_fd_to_vlsh (fd);
1394 if (vlsh != VLS_INVALID_HANDLE)
1396 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1402 size = libc_recv (fd, buf, n, flags);
1409 sendto (int fd, const void *buf, size_t n, int flags,
1410 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1415 if ((errno = -ldp_init ()))
1418 vlsh = ldp_fd_to_vlsh (fd);
1419 if (vlsh != INVALID_SESSION_ID)
1421 vppcom_endpt_t *ep = 0;
1427 switch (addr->sa_family)
1430 ep->is_ip4 = VPPCOM_IS_IP4;
1432 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1434 (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1438 ep->is_ip4 = VPPCOM_IS_IP6;
1440 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1442 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1446 errno = EAFNOSUPPORT;
1452 size = vls_sendto (vlsh, (void *) buf, n, flags, ep);
1461 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1469 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1470 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1475 if ((errno = -ldp_init ()))
1478 sid = ldp_fd_to_vlsh (fd);
1479 if (sid != VLS_INVALID_HANDLE)
1482 u8 src_addr[sizeof (struct sockaddr_in6)];
1487 size = vls_recvfrom (sid, buf, n, flags, &ep);
1490 size = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1493 size = vls_recvfrom (sid, buf, n, flags, NULL);
1503 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1510 sendmsg (int fd, const struct msghdr * message, int flags)
1515 if ((errno = -ldp_init ()))
1518 vlsh = ldp_fd_to_vlsh (fd);
1519 if (vlsh != VLS_INVALID_HANDLE)
1521 LDBG (0, "LDP-TBD");
1527 size = libc_sendmsg (fd, message, flags);
1535 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1538 const char *func_str;
1539 u32 sh = ldp_fd_to_vlsh (fd);
1541 if ((errno = -ldp_init ()))
1544 if (sh != INVALID_SESSION_ID)
1546 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1552 func_str = "libc_sendmmsg";
1555 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1556 "vmessages %p, vlen %u, flags 0x%x",
1557 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1559 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1566 int errno_val = errno;
1568 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1569 "rv %d, errno = %d", getpid (), fd, fd,
1570 func_str, size, errno_val);
1574 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1575 getpid (), fd, fd, size, size);
1582 recvmsg (int fd, struct msghdr * message, int flags)
1587 if ((errno = -ldp_init ()))
1590 vlsh = ldp_fd_to_vlsh (fd);
1591 if (vlsh != VLS_INVALID_HANDLE)
1593 LDBG (0, "LDP-TBD");
1599 size = libc_recvmsg (fd, message, flags);
1607 recvmmsg (int fd, struct mmsghdr *vmessages,
1608 unsigned int vlen, int flags, struct timespec *tmo)
1611 const char *func_str;
1612 u32 sh = ldp_fd_to_vlsh (fd);
1614 if ((errno = -ldp_init ()))
1617 if (sh != INVALID_SESSION_ID)
1619 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1625 func_str = "libc_recvmmsg";
1628 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1629 "vmessages %p, vlen %u, flags 0x%x, tmo %p",
1630 getpid (), fd, fd, func_str, vmessages, vlen,
1633 size = libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1640 int errno_val = errno;
1642 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1643 "rv %d, errno = %d", getpid (), fd, fd,
1644 func_str, size, errno_val);
1648 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1649 getpid (), fd, fd, size, size);
1656 getsockopt (int fd, int level, int optname,
1657 void *__restrict optval, socklen_t * __restrict optlen)
1662 if ((errno = -ldp_init ()))
1665 vlsh = ldp_fd_to_vlsh (fd);
1666 if (vlsh != VLS_INVALID_HANDLE)
1676 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
1680 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
1684 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
1688 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
1692 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
1694 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
1695 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
1696 memset (optval, 0, *optlen);
1702 case TCP_CONGESTION:
1703 strcpy (optval, "cubic");
1704 *optlen = strlen ("cubic");
1708 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
1709 "optname %d unsupported!", fd, vlsh, optname);
1717 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
1720 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
1721 "optname %d unsupported!", fd, vlsh, optname);
1729 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
1732 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
1735 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
1736 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
1739 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
1743 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
1747 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
1750 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
1753 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
1756 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
1757 "optname %d unsupported!", fd, vlsh, optname);
1765 if (rv != VPPCOM_OK)
1773 rv = libc_getsockopt (fd, level, optname, optval, optlen);
1780 setsockopt (int fd, int level, int optname,
1781 const void *optval, socklen_t optlen)
1786 if ((errno = -ldp_init ()))
1789 vlsh = ldp_fd_to_vlsh (fd);
1790 if (vlsh != VLS_INVALID_HANDLE)
1800 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
1801 (void *) optval, &optlen);
1804 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
1805 (void *) optval, &optlen);
1808 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
1809 (void *) optval, &optlen);
1812 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
1813 (void *) optval, &optlen);
1815 case TCP_CONGESTION:
1820 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
1821 "optname %d unsupported!", fd, vlsh, optname);
1829 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
1830 (void *) optval, &optlen);
1833 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
1834 "optname %d unsupported!", fd, vlsh, optname);
1842 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
1843 (void *) optval, &optlen);
1846 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
1847 (void *) optval, &optlen);
1850 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
1851 (void *) optval, &optlen);
1854 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
1855 "optname %d unsupported!", fd, vlsh, optname);
1863 if (rv != VPPCOM_OK)
1871 rv = libc_setsockopt (fd, level, optname, optval, optlen);
1878 listen (int fd, int n)
1883 if ((errno = -ldp_init ()))
1886 vlsh = ldp_fd_to_vlsh (fd);
1887 if (vlsh != VLS_INVALID_HANDLE)
1889 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
1891 rv = vls_listen (vlsh, n);
1892 if (rv != VPPCOM_OK)
1900 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
1901 rv = libc_listen (fd, n);
1904 LDBG (1, "fd %d: returning %d", fd, rv);
1909 ldp_accept4 (int listen_fd, __SOCKADDR_ARG addr,
1910 socklen_t * __restrict addr_len, int flags)
1912 vls_handle_t listen_vlsh, accept_vlsh;
1915 if ((errno = -ldp_init ()))
1918 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
1919 if (listen_vlsh != VLS_INVALID_HANDLE)
1922 u8 src_addr[sizeof (struct sockaddr_in6)];
1923 memset (&ep, 0, sizeof (ep));
1926 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
1927 " ep %p, flags 0x%x", listen_fd, listen_vlsh, ep, flags);
1929 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
1930 if (accept_vlsh < 0)
1932 errno = -accept_vlsh;
1937 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1938 if (rv != VPPCOM_OK)
1940 (void) vls_close (accept_vlsh);
1946 rv = ldp_vlsh_to_fd (accept_vlsh);
1952 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
1953 " flags 0x%x", listen_fd, addr, addr_len, flags);
1955 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
1958 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
1964 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
1967 return ldp_accept4 (fd, addr, addr_len, flags);
1971 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1973 return ldp_accept4 (fd, addr, addr_len, 0);
1977 shutdown (int fd, int how)
1981 u32 flags_len = sizeof (flags);
1983 if ((errno = -ldp_init ()))
1986 vlsh = ldp_fd_to_vlsh (fd);
1987 if (vlsh != VLS_INVALID_HANDLE)
1989 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
1991 if (vls_attr (vlsh, VPPCOM_ATTR_SET_SHUT, &how, &flags_len))
1997 if (vls_attr (vlsh, VPPCOM_ATTR_GET_SHUT, &flags, &flags_len))
2003 if (flags == SHUT_RDWR)
2008 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2009 rv = libc_shutdown (fd, how);
2016 epoll_create1 (int flags)
2018 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2022 if ((errno = -ldp_init ()))
2025 if (ldp->vcl_needs_real_epoll)
2027 rv = libc_epoll_create1 (flags);
2028 ldp->vcl_needs_real_epoll = 0;
2029 ldpw->vcl_mq_epfd = rv;
2030 LDBG (0, "created vcl epfd %u", rv);
2034 vlsh = vls_epoll_create ();
2035 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2042 rv = ldp_vlsh_to_fd (vlsh);
2044 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2049 epoll_create (int size)
2051 return epoll_create1 (0);
2055 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2057 vls_handle_t vep_vlsh, vlsh;
2060 if ((errno = -ldp_init ()))
2063 vep_vlsh = ldp_fd_to_vlsh (epfd);
2064 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2066 /* The LDP epoll_create1 always creates VCL epfd's.
2067 * The app should never have a kernel base epoll fd unless it
2068 * was acquired outside of the LD_PRELOAD process context.
2069 * In any case, if we get one, punt it to libc_epoll_ctl.
2071 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2072 " event %p", epfd, op, fd, event);
2074 rv = libc_epoll_ctl (epfd, op, fd, event);
2078 vlsh = ldp_fd_to_vlsh (fd);
2080 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2083 if (vlsh != VLS_INVALID_HANDLE)
2085 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2086 " event %p", epfd, vep_vlsh, vlsh, event);
2088 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2089 if (rv != VPPCOM_OK)
2098 u32 size = sizeof (epfd);
2100 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2103 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2104 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2106 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2113 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2122 else if (PREDICT_FALSE (libc_epfd < 0))
2129 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2130 " event %p", epfd, libc_epfd, op, fd, event);
2132 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2140 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2141 int timeout, const sigset_t * sigmask)
2143 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2144 double time_to_wait = (double) 0, max_time;
2145 int libc_epfd, rv = 0;
2146 vls_handle_t ep_vlsh;
2148 if ((errno = -ldp_init ()))
2151 if (PREDICT_FALSE (!events || (timeout < -1)))
2157 if (epfd == ldpw->vcl_mq_epfd)
2158 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2160 ep_vlsh = ldp_fd_to_vlsh (epfd);
2161 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2163 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2168 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2169 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2171 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2172 if (PREDICT_FALSE (libc_epfd < 0))
2179 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2180 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2181 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2184 if (!ldpw->epoll_wait_vcl)
2186 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2189 ldpw->epoll_wait_vcl = 1;
2200 ldpw->epoll_wait_vcl = 0;
2204 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2209 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2216 epoll_pwait (int epfd, struct epoll_event *events,
2217 int maxevents, int timeout, const sigset_t * sigmask)
2219 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2223 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2225 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2229 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2231 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2232 int rv, i, n_revents = 0;
2235 double wait_for_time;
2237 LDBG (3, "fds %p, nfds %d, timeout %d", fds, nfds, timeout);
2240 wait_for_time = (f64) timeout / 1000;
2244 for (i = 0; i < nfds; i++)
2249 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2250 if (vlsh != VLS_INVALID_HANDLE)
2252 fds[i].fd = -fds[i].fd;
2253 vec_add2 (ldpw->vcl_poll, vp, 1);
2255 vp->sh = vlsh_to_sh (vlsh);
2256 vp->events = fds[i].events;
2257 #ifdef __USE_XOPEN2K
2258 if (fds[i].events & POLLRDNORM)
2259 vp->events |= POLLIN;
2260 if (fds[i].events & POLLWRNORM)
2261 vp->events |= POLLOUT;
2263 vp->revents = fds[i].revents;
2267 vec_add1 (ldpw->libc_poll, fds[i]);
2268 vec_add1 (ldpw->libc_poll_idxs, i);
2274 if (vec_len (ldpw->vcl_poll))
2276 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2287 if (vec_len (ldpw->libc_poll))
2289 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2302 while ((wait_for_time == -1) ||
2303 (clib_time_now (&ldpw->clib_time) < wait_for_time));
2307 vec_foreach (vp, ldpw->vcl_poll)
2309 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2310 fds[vp->fds_ndx].revents = vp->revents;
2311 #ifdef __USE_XOPEN2K
2312 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2313 (fds[vp->fds_ndx].events & POLLRDNORM))
2314 fds[vp->fds_ndx].revents |= POLLRDNORM;
2315 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2316 (fds[vp->fds_ndx].events & POLLWRNORM))
2317 fds[vp->fds_ndx].revents |= POLLWRNORM;
2320 vec_reset_length (ldpw->vcl_poll);
2322 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2324 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2326 vec_reset_length (ldpw->libc_poll_idxs);
2327 vec_reset_length (ldpw->libc_poll);
2334 ppoll (struct pollfd *fds, nfds_t nfds,
2335 const struct timespec *timeout, const sigset_t * sigmask)
2337 if ((errno = -ldp_init ()))
2340 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2348 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2350 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2353 * This function is called when the library is loaded
2356 ldp_constructor (void)
2358 swrap_constructor ();
2359 if (ldp_init () != 0)
2360 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2362 else if (LDP_DEBUG > 0)
2363 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2367 * This function is called when the library is unloaded
2370 ldp_destructor (void)
2373 swrap_destructor ();
2378 /* Don't use clib_warning() here because that calls writev()
2379 * which will call ldp_init().
2382 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2383 __func__, __LINE__, getpid ());
2388 * fd.io coding-style-patch-verification: ON
2391 * eval: (c-set-style "gnu")