2 * Copyright (c) 2016-2019 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
22 #include <sys/resource.h>
23 #include <netinet/tcp.h>
25 #include <vcl/ldp_socket_wrapper.h>
29 #include <vcl/vcl_locked.h>
30 #include <vppinfra/time.h>
31 #include <vppinfra/bitmap.h>
32 #include <vppinfra/lock.h>
33 #include <vppinfra/pool.h>
34 #include <vppinfra/hash.h>
36 #define HAVE_CONSTRUCTOR_ATTRIBUTE
37 #ifdef HAVE_CONSTRUCTOR_ATTRIBUTE
38 #define CONSTRUCTOR_ATTRIBUTE \
39 __attribute__ ((constructor))
41 #define CONSTRUCTOR_ATTRIBUTE
42 #endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */
44 #define HAVE_DESTRUCTOR_ATTRIBUTE
45 #ifdef HAVE_DESTRUCTOR_ATTRIBUTE
46 #define DESTRUCTOR_ATTRIBUTE \
47 __attribute__ ((destructor))
49 #define DESTRUCTOR_ATTRIBUTE
52 #define LDP_MAX_NWORKERS 32
54 typedef struct ldp_worker_ctx_
57 clib_time_t clib_time;
62 clib_bitmap_t *rd_bitmap;
63 clib_bitmap_t *wr_bitmap;
64 clib_bitmap_t *ex_bitmap;
65 clib_bitmap_t *si_rd_bitmap;
66 clib_bitmap_t *si_wr_bitmap;
67 clib_bitmap_t *si_ex_bitmap;
68 clib_bitmap_t *libc_rd_bitmap;
69 clib_bitmap_t *libc_wr_bitmap;
70 clib_bitmap_t *libc_ex_bitmap;
76 struct pollfd *libc_poll;
87 /* clib_bitmap_t, fd_mask and vcl_si_set are used interchangeably. Make sure
88 * they are the same size */
89 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
90 "ldp bitmap size mismatch");
91 STATIC_ASSERT (sizeof (vcl_si_set) == sizeof (fd_mask),
92 "ldp bitmap size mismatch");
96 ldp_worker_ctx_t *workers;
98 char app_name[LDP_APP_NAME_MAX];
104 /** vcl needs next epoll_create to go to libc_epoll */
105 u8 vcl_needs_real_epoll;
108 #define LDP_DEBUG ldp->debug
110 #define LDBG(_lvl, _fmt, _args...) \
111 if (ldp->debug > _lvl) \
112 clib_warning ("ldp<%d>: " _fmt, getpid(), ##_args)
114 static ldp_main_t ldp_main = {
115 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
116 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
117 .debug = LDP_DEBUG_INIT,
118 .transparent_tls = 0,
121 static ldp_main_t *ldp = &ldp_main;
123 static inline ldp_worker_ctx_t *
124 ldp_worker_get_current (void)
126 return (ldp->workers + vppcom_worker_index ());
130 * RETURN: 0 on success or -1 on error.
133 ldp_set_app_name (char *app_name)
135 snprintf (ldp->app_name, LDP_APP_NAME_MAX,
136 "ldp-%d-%s", getpid (), app_name);
142 if (ldp->app_name[0] == '\0')
143 ldp_set_app_name ("app");
145 return ldp->app_name;
149 ldp_vlsh_to_fd (vls_handle_t vlsh)
151 return (vlsh + ldp->vlsh_bit_val);
154 static inline vls_handle_t
155 ldp_fd_to_vlsh (int fd)
157 if (fd < ldp->vlsh_bit_val)
158 return VLS_INVALID_HANDLE;
160 return (fd - ldp->vlsh_bit_val);
164 ldp_alloc_workers (void)
168 pool_alloc (ldp->workers, LDP_MAX_NWORKERS);
174 ldp_worker_ctx_t *ldpw;
177 if (PREDICT_TRUE (ldp->init))
181 ldp->vcl_needs_real_epoll = 1;
182 rv = vls_app_create (ldp_get_app_name ());
185 ldp->vcl_needs_real_epoll = 0;
186 if (rv == VPPCOM_EEXIST)
188 LDBG (2, "\nERROR: ldp_init: vppcom_app_create()"
189 " failed! rv = %d (%s)\n", rv, vppcom_retval_str (rv));
193 ldp->vcl_needs_real_epoll = 0;
194 ldp_alloc_workers ();
195 ldpw = ldp_worker_get_current ();
197 char *env_var_str = getenv (LDP_ENV_DEBUG);
201 if (sscanf (env_var_str, "%u", &tmp) != 1)
202 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
203 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
208 LDBG (0, "configured LDP debug level (%u) from env var "
209 LDP_ENV_DEBUG "!", ldp->debug);
213 env_var_str = getenv (LDP_ENV_APP_NAME);
216 ldp_set_app_name (env_var_str);
217 LDBG (0, "configured LDP app name (%s) from the env var "
218 LDP_ENV_APP_NAME "!", ldp->app_name);
221 env_var_str = getenv (LDP_ENV_SID_BIT);
225 if (sscanf (env_var_str, "%u", &sb) != 1)
227 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
228 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
229 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
231 else if (sb < LDP_SID_BIT_MIN)
233 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
234 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
236 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
237 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
238 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
239 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
241 else if (sb > LDP_SID_BIT_MAX)
243 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
244 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
246 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
247 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
248 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
249 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
253 ldp->vlsh_bit_val = (1 << sb);
254 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
256 LDBG (0, "configured LDP sid bit (%u) from "
257 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
258 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
261 /* Make sure there are enough bits in the fd set for vcl sessions */
262 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
264 LDBG (0, "ERROR: LDP vlsh bit value %d > FD_SETSIZE/2 %d!",
265 ldp->vlsh_bit_val, FD_SETSIZE / 2);
270 env_var_str = getenv (LDP_ENV_TLS_TRANS);
273 ldp->transparent_tls = 1;
277 pool_foreach (ldpw, ldp->workers, ({
278 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
282 LDBG (0, "LDP initialization: done!");
293 if ((errno = -ldp_init ()))
296 vlsh = ldp_fd_to_vlsh (fd);
297 if (vlsh != VLS_INVALID_HANDLE)
299 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
302 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
304 rv = libc_close (epfd);
307 u32 size = sizeof (epfd);
310 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
313 else if (PREDICT_FALSE (epfd < 0))
320 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
322 rv = vls_close (vlsh);
331 LDBG (0, "fd %d: calling libc_close", fd);
332 rv = libc_close (fd);
340 read (int fd, void *buf, size_t nbytes)
345 if ((errno = -ldp_init ()))
348 vlsh = ldp_fd_to_vlsh (fd);
349 if (vlsh != VLS_INVALID_HANDLE)
351 size = vls_read (vlsh, buf, nbytes);
360 size = libc_read (fd, buf, nbytes);
367 readv (int fd, const struct iovec * iov, int iovcnt)
369 int rv = 0, i, total = 0;
373 if ((errno = -ldp_init ()))
376 vlsh = ldp_fd_to_vlsh (fd);
377 if (vlsh != VLS_INVALID_HANDLE)
381 for (i = 0; i < iovcnt; ++i)
383 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
389 if (rv < iov[i].iov_len)
394 while ((rv >= 0) && (total == 0));
406 size = libc_readv (fd, iov, iovcnt);
413 write (int fd, const void *buf, size_t nbytes)
418 if ((errno = -ldp_init ()))
421 vlsh = ldp_fd_to_vlsh (fd);
422 if (vlsh != VLS_INVALID_HANDLE)
424 size = vls_write_msg (vlsh, (void *) buf, nbytes);
433 size = libc_write (fd, buf, nbytes);
440 writev (int fd, const struct iovec * iov, int iovcnt)
442 ssize_t size = 0, total = 0;
446 if ((errno = -ldp_init ()))
449 vlsh = ldp_fd_to_vlsh (fd);
450 if (vlsh != VLS_INVALID_HANDLE)
454 for (i = 0; i < iovcnt; ++i)
456 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
462 if (rv < iov[i].iov_len)
467 while ((rv >= 0) && (total == 0));
479 size = libc_writev (fd, iov, iovcnt);
486 fcntl (int fd, int cmd, ...)
492 if ((errno = -ldp_init ()))
497 vlsh = ldp_fd_to_vlsh (fd);
498 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
499 if (vlsh != VLS_INVALID_HANDLE)
501 int flags = va_arg (ap, int);
504 size = sizeof (flags);
509 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
513 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
518 /* TODO handle this */
519 LDBG (0, "F_SETFD ignored flags %u", flags);
534 rv = libc_vfcntl (fd, cmd, ap);
543 ioctl (int fd, unsigned long int cmd, ...)
549 if ((errno = -ldp_init ()))
554 vlsh = ldp_fd_to_vlsh (fd);
555 if (vlsh != VLS_INVALID_HANDLE)
560 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
565 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
566 u32 size = sizeof (flags);
568 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
569 * non-blocking, the flags should be read here and merged
572 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
588 rv = libc_vioctl (fd, cmd, ap);
596 ldp_select_init_maps (fd_set * __restrict original,
597 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
598 clib_bitmap_t ** vclb, int nfds, u32 minbits,
599 u32 n_bytes, uword * si_bits, uword * libc_bits)
601 uword si_bits_set, libc_bits_set;
605 clib_bitmap_validate (*vclb, minbits);
606 clib_bitmap_validate (*libcb, minbits);
607 clib_bitmap_validate (*resultb, minbits);
608 clib_memcpy_fast (*resultb, original, n_bytes);
609 memset (original, 0, n_bytes);
612 clib_bitmap_foreach (fd, *resultb, ({
615 vlsh = ldp_fd_to_vlsh (fd);
616 if (vlsh == VLS_INVALID_HANDLE)
617 clib_bitmap_set_no_check (*libcb, fd, 1);
619 clib_bitmap_set_no_check (*vclb, vlsh_to_session_index (vlsh), 1);
623 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
624 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
626 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
627 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
631 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
641 clib_bitmap_foreach (si, vclb, ({
642 vlsh = vls_session_index_to_vlsh (si);
643 fd = ldp_vlsh_to_fd (vlsh);
644 if (PREDICT_FALSE (fd < 0))
657 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
665 clib_bitmap_foreach (fd, result, ({
666 FD_SET ((int)fd, libcb);
672 ldp_pselect (int nfds, fd_set * __restrict readfds,
673 fd_set * __restrict writefds,
674 fd_set * __restrict exceptfds,
675 const struct timespec *__restrict timeout,
676 const __sigset_t * __restrict sigmask)
678 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
679 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
680 struct timespec libc_tspec = { 0 };
681 f64 time_out, vcl_timeout = 0;
682 uword si_bits, libc_bits;
683 int rv, bits_set = 0;
691 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
692 clib_time_init (&ldpw->clib_time);
696 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
697 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
699 /* select as fine grained sleep */
702 time_out += clib_time_now (&ldpw->clib_time);
703 while (clib_time_now (&ldpw->clib_time) < time_out)
716 if (nfds <= ldp->vlsh_bit_val)
718 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
723 si_bits = libc_bits = 0;
724 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
727 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
728 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
729 &si_bits, &libc_bits);
731 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
732 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
733 minbits, n_bytes, &si_bits, &libc_bits);
735 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
736 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
737 minbits, n_bytes, &si_bits, &libc_bits);
739 if (PREDICT_FALSE (!si_bits && !libc_bits))
747 libc_tspec = timeout ? *timeout : libc_tspec;
754 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
755 vec_len (ldpw->rd_bitmap) *
756 sizeof (clib_bitmap_t));
758 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
759 vec_len (ldpw->wr_bitmap) *
760 sizeof (clib_bitmap_t));
762 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
763 vec_len (ldpw->ex_bitmap) *
764 sizeof (clib_bitmap_t));
766 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
767 writefds ? ldpw->wr_bitmap : NULL,
768 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
776 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
782 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
788 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
799 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
800 vec_len (ldpw->libc_rd_bitmap) *
801 sizeof (clib_bitmap_t));
803 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
804 vec_len (ldpw->libc_wr_bitmap) *
805 sizeof (clib_bitmap_t));
807 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
808 vec_len (ldpw->libc_ex_bitmap) *
809 sizeof (clib_bitmap_t));
811 rv = libc_pselect (libc_bits,
812 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
813 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
814 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
815 &libc_tspec, sigmask);
818 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
819 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
820 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
831 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
835 /* TBD: set timeout to amount of time left */
836 clib_bitmap_zero (ldpw->rd_bitmap);
837 clib_bitmap_zero (ldpw->si_rd_bitmap);
838 clib_bitmap_zero (ldpw->libc_rd_bitmap);
839 clib_bitmap_zero (ldpw->wr_bitmap);
840 clib_bitmap_zero (ldpw->si_wr_bitmap);
841 clib_bitmap_zero (ldpw->libc_wr_bitmap);
842 clib_bitmap_zero (ldpw->ex_bitmap);
843 clib_bitmap_zero (ldpw->si_ex_bitmap);
844 clib_bitmap_zero (ldpw->libc_ex_bitmap);
850 select (int nfds, fd_set * __restrict readfds,
851 fd_set * __restrict writefds,
852 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
854 struct timespec tspec;
858 tspec.tv_sec = timeout->tv_sec;
859 tspec.tv_nsec = timeout->tv_usec * 1000;
861 return ldp_pselect (nfds, readfds, writefds, exceptfds,
862 timeout ? &tspec : NULL, NULL);
867 pselect (int nfds, fd_set * __restrict readfds,
868 fd_set * __restrict writefds,
869 fd_set * __restrict exceptfds,
870 const struct timespec *__restrict timeout,
871 const __sigset_t * __restrict sigmask)
873 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
877 /* If transparent TLS mode is turned on, then ldp will load key and cert.
880 load_tls_cert (vls_handle_t vlsh)
882 char *env_var_str = getenv (LDP_ENV_TLS_CERT);
890 fp = fopen (env_var_str, "r");
893 LDBG (0, "ERROR: failed to open cert file %s \n", env_var_str);
896 cert_size = fread (inbuf, sizeof (char), sizeof (inbuf), fp);
898 vppcom_session_tls_add_cert (vlsh_to_session_index (vlsh), tls_cert,
904 LDBG (0, "ERROR: failed to read LDP environment %s\n",
912 load_tls_key (vls_handle_t vlsh)
914 char *env_var_str = getenv (LDP_ENV_TLS_KEY);
922 fp = fopen (env_var_str, "r");
925 LDBG (0, "ERROR: failed to open key file %s \n", env_var_str);
928 key_size = fread (inbuf, sizeof (char), sizeof (inbuf), fp);
930 vppcom_session_tls_add_key (vlsh_to_session_index (vlsh), tls_key,
936 LDBG (0, "ERROR: failed to read LDP environment %s\n", LDP_ENV_TLS_KEY);
943 socket (int domain, int type, int protocol)
945 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
946 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
949 if ((errno = -ldp_init ()))
952 if (((domain == AF_INET) || (domain == AF_INET6)) &&
953 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
956 if (ldp->transparent_tls)
958 proto = VPPCOM_PROTO_TLS;
961 proto = ((sock_type == SOCK_DGRAM) ?
962 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
964 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
965 proto, vppcom_proto_str (proto), is_nonblocking);
967 vlsh = vls_create (proto, is_nonblocking);
975 if (ldp->transparent_tls)
977 if (load_tls_cert (vlsh) < 0 || load_tls_key (vlsh) < 0)
982 rv = ldp_vlsh_to_fd (vlsh);
987 LDBG (0, "calling libc_socket");
988 rv = libc_socket (domain, type, protocol);
995 * Create two new sockets, of type TYPE in domain DOMAIN and using
996 * protocol PROTOCOL, which are connected to each other, and put file
997 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
998 * one will be chosen automatically.
999 * Returns 0 on success, -1 for errors.
1002 socketpair (int domain, int type, int protocol, int fds[2])
1004 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1006 if ((errno = -ldp_init ()))
1009 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1010 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1012 LDBG (0, "LDP-TBD");
1018 LDBG (1, "calling libc_socketpair");
1019 rv = libc_socketpair (domain, type, protocol, fds);
1026 bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1031 if ((errno = -ldp_init ()))
1034 vlsh = ldp_fd_to_vlsh (fd);
1035 if (vlsh != VLS_INVALID_HANDLE)
1039 switch (addr->sa_family)
1042 if (len != sizeof (struct sockaddr_in))
1044 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1050 ep.is_ip4 = VPPCOM_IS_IP4;
1051 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1052 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1056 if (len != sizeof (struct sockaddr_in6))
1058 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1064 ep.is_ip4 = VPPCOM_IS_IP6;
1065 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1066 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1070 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1071 fd, vlsh, addr->sa_family);
1072 errno = EAFNOSUPPORT;
1076 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1079 rv = vls_bind (vlsh, &ep);
1080 if (rv != VPPCOM_OK)
1088 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1089 rv = libc_bind (fd, addr, len);
1093 LDBG (1, "fd %d: returning %d", fd, rv);
1099 ldp_copy_ep_to_sockaddr (__SOCKADDR_ARG addr, socklen_t * __restrict len,
1100 vppcom_endpt_t * ep)
1103 int sa_len, copy_len;
1105 if ((errno = -ldp_init ()))
1108 if (addr && len && ep)
1110 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1111 switch (addr->sa_family)
1114 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1115 if (*len > sizeof (struct sockaddr_in))
1116 *len = sizeof (struct sockaddr_in);
1117 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1118 copy_len = *len - sa_len;
1120 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1125 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1126 if (*len > sizeof (struct sockaddr_in6))
1127 *len = sizeof (struct sockaddr_in6);
1128 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1129 copy_len = *len - sa_len;
1131 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1132 __in6_u.__u6_addr8, ep->ip, copy_len);
1145 getsockname (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1150 if ((errno = -ldp_init ()))
1153 vlsh = ldp_fd_to_vlsh (fd);
1154 if (vlsh != VLS_INVALID_HANDLE)
1157 u8 addr_buf[sizeof (struct in6_addr)];
1158 u32 size = sizeof (ep);
1162 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1163 if (rv != VPPCOM_OK)
1170 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1171 if (rv != VPPCOM_OK)
1180 rv = libc_getsockname (fd, addr, len);
1187 connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1192 if ((errno = -ldp_init ()))
1197 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1203 vlsh = ldp_fd_to_vlsh (fd);
1204 if (vlsh != VLS_INVALID_HANDLE)
1208 switch (addr->sa_family)
1211 if (len != sizeof (struct sockaddr_in))
1213 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1219 ep.is_ip4 = VPPCOM_IS_IP4;
1220 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1221 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1225 if (len != sizeof (struct sockaddr_in6))
1227 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1233 ep.is_ip4 = VPPCOM_IS_IP6;
1234 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1235 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1239 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1240 fd, vlsh, addr->sa_family);
1241 errno = EAFNOSUPPORT;
1245 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1248 rv = vls_connect (vlsh, &ep);
1249 if (rv != VPPCOM_OK)
1257 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1260 rv = libc_connect (fd, addr, len);
1264 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1269 getpeername (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1274 if ((errno = -ldp_init ()))
1277 vlsh = ldp_fd_to_vlsh (fd);
1278 if (vlsh != VLS_INVALID_HANDLE)
1281 u8 addr_buf[sizeof (struct in6_addr)];
1282 u32 size = sizeof (ep);
1285 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1286 if (rv != VPPCOM_OK)
1293 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1294 if (rv != VPPCOM_OK)
1303 rv = libc_getpeername (fd, addr, len);
1310 send (int fd, const void *buf, size_t n, int flags)
1312 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1315 if ((errno = -ldp_init ()))
1318 if (vlsh != VLS_INVALID_HANDLE)
1320 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1321 if (size < VPPCOM_OK)
1329 size = libc_send (fd, buf, n, flags);
1336 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1338 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1342 if ((errno = -ldp_init ()))
1345 vlsh = ldp_fd_to_vlsh (out_fd);
1346 if (vlsh != VLS_INVALID_HANDLE)
1349 ssize_t results = 0;
1350 size_t n_bytes_left = len;
1351 size_t bytes_to_read;
1354 u32 flags, flags_len = sizeof (flags);
1356 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1357 if (PREDICT_FALSE (rv != VPPCOM_OK))
1359 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1360 out_fd, vlsh, rv, vppcom_retval_str (rv));
1362 vec_reset_length (ldpw->io_buffer);
1370 off_t off = lseek (in_fd, *offset, SEEK_SET);
1371 if (PREDICT_FALSE (off == -1))
1377 ASSERT (off == *offset);
1382 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1385 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %d (%s)!",
1386 out_fd, vlsh, size, vppcom_retval_str (size));
1387 vec_reset_length (ldpw->io_buffer);
1393 bytes_to_read = size;
1394 if (bytes_to_read == 0)
1396 if (flags & O_NONBLOCK)
1405 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1406 vec_validate (ldpw->io_buffer, bytes_to_read);
1407 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1412 vec_reset_length (ldpw->io_buffer);
1419 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1422 if (size == VPPCOM_EAGAIN)
1424 if (flags & O_NONBLOCK)
1435 vec_reset_length (ldpw->io_buffer);
1444 ASSERT (n_bytes_left >= nbytes);
1445 n_bytes_left = n_bytes_left - nbytes;
1447 while (n_bytes_left > 0);
1450 vec_reset_length (ldpw->io_buffer);
1453 off_t off = lseek (in_fd, *offset, SEEK_SET);
1454 if (PREDICT_FALSE (off == -1))
1460 ASSERT (off == *offset);
1461 *offset += results + 1;
1473 size = libc_sendfile (out_fd, in_fd, offset, len);
1481 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1483 return sendfile (out_fd, in_fd, offset, len);
1487 recv (int fd, void *buf, size_t n, int flags)
1492 if ((errno = -ldp_init ()))
1495 vlsh = ldp_fd_to_vlsh (fd);
1496 if (vlsh != VLS_INVALID_HANDLE)
1498 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1504 size = libc_recv (fd, buf, n, flags);
1511 sendto (int fd, const void *buf, size_t n, int flags,
1512 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1517 if ((errno = -ldp_init ()))
1520 vlsh = ldp_fd_to_vlsh (fd);
1521 if (vlsh != INVALID_SESSION_ID)
1523 vppcom_endpt_t *ep = 0;
1529 switch (addr->sa_family)
1532 ep->is_ip4 = VPPCOM_IS_IP4;
1534 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1536 (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1540 ep->is_ip4 = VPPCOM_IS_IP6;
1542 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1544 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1548 errno = EAFNOSUPPORT;
1554 size = vls_sendto (vlsh, (void *) buf, n, flags, ep);
1563 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1571 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1572 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1577 if ((errno = -ldp_init ()))
1580 sid = ldp_fd_to_vlsh (fd);
1581 if (sid != VLS_INVALID_HANDLE)
1584 u8 src_addr[sizeof (struct sockaddr_in6)];
1589 size = vls_recvfrom (sid, buf, n, flags, &ep);
1593 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1599 size = vls_recvfrom (sid, buf, n, flags, NULL);
1609 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1616 sendmsg (int fd, const struct msghdr * message, int flags)
1621 if ((errno = -ldp_init ()))
1624 vlsh = ldp_fd_to_vlsh (fd);
1625 if (vlsh != VLS_INVALID_HANDLE)
1627 LDBG (0, "LDP-TBD");
1633 size = libc_sendmsg (fd, message, flags);
1641 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1644 const char *func_str;
1645 u32 sh = ldp_fd_to_vlsh (fd);
1647 if ((errno = -ldp_init ()))
1650 if (sh != INVALID_SESSION_ID)
1652 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1658 func_str = "libc_sendmmsg";
1661 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1662 "vmessages %p, vlen %u, flags 0x%x",
1663 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1665 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1672 int errno_val = errno;
1674 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1675 "rv %d, errno = %d", getpid (), fd, fd,
1676 func_str, size, errno_val);
1680 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1681 getpid (), fd, fd, size, size);
1688 recvmsg (int fd, struct msghdr * message, int flags)
1693 if ((errno = -ldp_init ()))
1696 vlsh = ldp_fd_to_vlsh (fd);
1697 if (vlsh != VLS_INVALID_HANDLE)
1699 LDBG (0, "LDP-TBD");
1705 size = libc_recvmsg (fd, message, flags);
1713 recvmmsg (int fd, struct mmsghdr *vmessages,
1714 unsigned int vlen, int flags, struct timespec *tmo)
1717 const char *func_str;
1718 u32 sh = ldp_fd_to_vlsh (fd);
1720 if ((errno = -ldp_init ()))
1723 if (sh != INVALID_SESSION_ID)
1725 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1731 func_str = "libc_recvmmsg";
1734 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1735 "vmessages %p, vlen %u, flags 0x%x, tmo %p",
1736 getpid (), fd, fd, func_str, vmessages, vlen,
1739 size = libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1746 int errno_val = errno;
1748 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1749 "rv %d, errno = %d", getpid (), fd, fd,
1750 func_str, size, errno_val);
1754 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1755 getpid (), fd, fd, size, size);
1762 getsockopt (int fd, int level, int optname,
1763 void *__restrict optval, socklen_t * __restrict optlen)
1768 if ((errno = -ldp_init ()))
1771 vlsh = ldp_fd_to_vlsh (fd);
1772 if (vlsh != VLS_INVALID_HANDLE)
1782 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
1786 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
1790 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
1794 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
1798 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
1800 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
1801 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
1802 memset (optval, 0, *optlen);
1808 case TCP_CONGESTION:
1809 strcpy (optval, "cubic");
1810 *optlen = strlen ("cubic");
1814 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
1815 "optname %d unsupported!", fd, vlsh, optname);
1823 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
1826 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
1827 "optname %d unsupported!", fd, vlsh, optname);
1835 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
1838 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
1841 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
1842 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
1845 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
1849 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
1853 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
1856 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
1859 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
1862 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
1863 "optname %d unsupported!", fd, vlsh, optname);
1871 if (rv != VPPCOM_OK)
1879 rv = libc_getsockopt (fd, level, optname, optval, optlen);
1886 setsockopt (int fd, int level, int optname,
1887 const void *optval, socklen_t optlen)
1892 if ((errno = -ldp_init ()))
1895 vlsh = ldp_fd_to_vlsh (fd);
1896 if (vlsh != VLS_INVALID_HANDLE)
1906 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
1907 (void *) optval, &optlen);
1910 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
1911 (void *) optval, &optlen);
1914 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
1915 (void *) optval, &optlen);
1918 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
1919 (void *) optval, &optlen);
1921 case TCP_CONGESTION:
1927 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
1928 "optname %d unsupported!", fd, vlsh, optname);
1936 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
1937 (void *) optval, &optlen);
1940 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
1941 "optname %d unsupported!", fd, vlsh, optname);
1949 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
1950 (void *) optval, &optlen);
1953 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
1954 (void *) optval, &optlen);
1957 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
1958 (void *) optval, &optlen);
1961 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
1962 "optname %d unsupported!", fd, vlsh, optname);
1970 if (rv != VPPCOM_OK)
1978 rv = libc_setsockopt (fd, level, optname, optval, optlen);
1985 listen (int fd, int n)
1990 if ((errno = -ldp_init ()))
1993 vlsh = ldp_fd_to_vlsh (fd);
1994 if (vlsh != VLS_INVALID_HANDLE)
1996 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
1998 rv = vls_listen (vlsh, n);
1999 if (rv != VPPCOM_OK)
2007 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2008 rv = libc_listen (fd, n);
2011 LDBG (1, "fd %d: returning %d", fd, rv);
2016 ldp_accept4 (int listen_fd, __SOCKADDR_ARG addr,
2017 socklen_t * __restrict addr_len, int flags)
2019 vls_handle_t listen_vlsh, accept_vlsh;
2022 if ((errno = -ldp_init ()))
2025 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2026 if (listen_vlsh != VLS_INVALID_HANDLE)
2029 u8 src_addr[sizeof (struct sockaddr_in6)];
2030 memset (&ep, 0, sizeof (ep));
2033 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2034 " ep %p, flags 0x%x", listen_fd, listen_vlsh, ep, flags);
2036 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2037 if (accept_vlsh < 0)
2039 errno = -accept_vlsh;
2044 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2045 if (rv != VPPCOM_OK)
2047 (void) vls_close (accept_vlsh);
2053 rv = ldp_vlsh_to_fd (accept_vlsh);
2059 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2060 " flags 0x%x", listen_fd, addr, addr_len, flags);
2062 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2065 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2071 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2074 return ldp_accept4 (fd, addr, addr_len, flags);
2078 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2080 return ldp_accept4 (fd, addr, addr_len, 0);
2084 shutdown (int fd, int how)
2088 u32 flags_len = sizeof (flags);
2090 if ((errno = -ldp_init ()))
2093 vlsh = ldp_fd_to_vlsh (fd);
2094 if (vlsh != VLS_INVALID_HANDLE)
2096 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2098 if (vls_attr (vlsh, VPPCOM_ATTR_SET_SHUT, &how, &flags_len))
2104 if (vls_attr (vlsh, VPPCOM_ATTR_GET_SHUT, &flags, &flags_len))
2110 if (flags == SHUT_RDWR)
2115 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2116 rv = libc_shutdown (fd, how);
2123 epoll_create1 (int flags)
2125 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2129 if ((errno = -ldp_init ()))
2132 if (ldp->vcl_needs_real_epoll)
2134 /* Make sure workers have been allocated */
2137 ldp_alloc_workers ();
2138 ldpw = ldp_worker_get_current ();
2140 rv = libc_epoll_create1 (flags);
2141 ldp->vcl_needs_real_epoll = 0;
2142 ldpw->vcl_mq_epfd = rv;
2143 LDBG (0, "created vcl epfd %u", rv);
2147 vlsh = vls_epoll_create ();
2148 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2155 rv = ldp_vlsh_to_fd (vlsh);
2157 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2162 epoll_create (int size)
2164 return epoll_create1 (0);
2168 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2170 vls_handle_t vep_vlsh, vlsh;
2173 if ((errno = -ldp_init ()))
2176 vep_vlsh = ldp_fd_to_vlsh (epfd);
2177 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2179 /* The LDP epoll_create1 always creates VCL epfd's.
2180 * The app should never have a kernel base epoll fd unless it
2181 * was acquired outside of the LD_PRELOAD process context.
2182 * In any case, if we get one, punt it to libc_epoll_ctl.
2184 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2185 " event %p", epfd, op, fd, event);
2187 rv = libc_epoll_ctl (epfd, op, fd, event);
2191 vlsh = ldp_fd_to_vlsh (fd);
2193 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2196 if (vlsh != VLS_INVALID_HANDLE)
2198 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2199 " event %p", epfd, vep_vlsh, vlsh, event);
2201 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2202 if (rv != VPPCOM_OK)
2211 u32 size = sizeof (epfd);
2213 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2216 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2217 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2219 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2226 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2235 else if (PREDICT_FALSE (libc_epfd < 0))
2242 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2243 " event %p", epfd, libc_epfd, op, fd, event);
2245 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2253 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2254 int timeout, const sigset_t * sigmask)
2256 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2257 double time_to_wait = (double) 0, max_time;
2258 int libc_epfd, rv = 0;
2259 vls_handle_t ep_vlsh;
2261 if ((errno = -ldp_init ()))
2264 if (PREDICT_FALSE (!events || (timeout < -1)))
2270 if (epfd == ldpw->vcl_mq_epfd)
2271 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2273 ep_vlsh = ldp_fd_to_vlsh (epfd);
2274 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2276 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2281 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2282 clib_time_init (&ldpw->clib_time);
2283 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2284 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2286 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2287 if (PREDICT_FALSE (libc_epfd < 0))
2294 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2295 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2296 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2299 if (!ldpw->epoll_wait_vcl)
2301 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2304 ldpw->epoll_wait_vcl = 1;
2315 ldpw->epoll_wait_vcl = 0;
2319 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2324 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2331 epoll_pwait (int epfd, struct epoll_event *events,
2332 int maxevents, int timeout, const sigset_t * sigmask)
2334 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2338 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2340 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2344 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2346 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2347 int rv, i, n_revents = 0;
2352 LDBG (3, "fds %p, nfds %d, timeout %d", fds, nfds, timeout);
2354 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2355 clib_time_init (&ldpw->clib_time);
2357 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2358 max_time += clib_time_now (&ldpw->clib_time);
2360 for (i = 0; i < nfds; i++)
2365 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2366 if (vlsh != VLS_INVALID_HANDLE)
2368 fds[i].fd = -fds[i].fd;
2369 vec_add2 (ldpw->vcl_poll, vp, 1);
2371 vp->sh = vlsh_to_sh (vlsh);
2372 vp->events = fds[i].events;
2373 #ifdef __USE_XOPEN2K
2374 if (fds[i].events & POLLRDNORM)
2375 vp->events |= POLLIN;
2376 if (fds[i].events & POLLWRNORM)
2377 vp->events |= POLLOUT;
2379 vp->revents = fds[i].revents;
2383 vec_add1 (ldpw->libc_poll, fds[i]);
2384 vec_add1 (ldpw->libc_poll_idxs, i);
2390 if (vec_len (ldpw->vcl_poll))
2392 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2403 if (vec_len (ldpw->libc_poll))
2405 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2418 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2422 vec_foreach (vp, ldpw->vcl_poll)
2424 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2425 fds[vp->fds_ndx].revents = vp->revents;
2426 #ifdef __USE_XOPEN2K
2427 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2428 (fds[vp->fds_ndx].events & POLLRDNORM))
2429 fds[vp->fds_ndx].revents |= POLLRDNORM;
2430 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2431 (fds[vp->fds_ndx].events & POLLWRNORM))
2432 fds[vp->fds_ndx].revents |= POLLWRNORM;
2435 vec_reset_length (ldpw->vcl_poll);
2437 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2439 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2441 vec_reset_length (ldpw->libc_poll_idxs);
2442 vec_reset_length (ldpw->libc_poll);
2449 ppoll (struct pollfd *fds, nfds_t nfds,
2450 const struct timespec *timeout, const sigset_t * sigmask)
2452 if ((errno = -ldp_init ()))
2455 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2463 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2465 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2468 * This function is called when the library is loaded
2471 ldp_constructor (void)
2473 swrap_constructor ();
2474 if (ldp_init () != 0)
2476 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2480 else if (LDP_DEBUG > 0)
2481 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2485 * This function is called when the library is unloaded
2488 ldp_destructor (void)
2491 swrap_destructor ();
2496 /* Don't use clib_warning() here because that calls writev()
2497 * which will call ldp_init().
2500 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2501 __func__, __LINE__, getpid ());
2506 * fd.io coding-style-patch-verification: ON
2509 * eval: (c-set-style "gnu")