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;
88 /* clib_bitmap_t, fd_mask and vcl_si_set are used interchangeably. Make sure
89 * they are the same size */
90 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
91 "ldp bitmap size mismatch");
92 STATIC_ASSERT (sizeof (vcl_si_set) == sizeof (fd_mask),
93 "ldp bitmap size mismatch");
97 ldp_worker_ctx_t *workers;
99 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 * crypto state used only for testing
114 #define LDP_DEBUG ldp->debug
116 #define LDBG(_lvl, _fmt, _args...) \
117 if (ldp->debug > _lvl) \
119 int errno_saved = errno; \
120 fprintf (stderr, "ldp<%d>: " _fmt "\n", getpid(), ##_args); \
121 errno = errno_saved; \
124 static ldp_main_t ldp_main = {
125 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
126 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
127 .debug = LDP_DEBUG_INIT,
128 .transparent_tls = 0,
132 static ldp_main_t *ldp = &ldp_main;
134 static inline ldp_worker_ctx_t *
135 ldp_worker_get_current (void)
137 return (ldp->workers + vppcom_worker_index ());
141 * RETURN: 0 on success or -1 on error.
144 ldp_set_app_name (char *app_name)
146 snprintf (ldp->app_name, LDP_APP_NAME_MAX,
147 "ldp-%d-%s", getpid (), app_name);
153 if (ldp->app_name[0] == '\0')
154 ldp_set_app_name ("app");
156 return ldp->app_name;
160 ldp_vlsh_to_fd (vls_handle_t vlsh)
162 return (vlsh + ldp->vlsh_bit_val);
165 static inline vls_handle_t
166 ldp_fd_to_vlsh (int fd)
168 if (fd < ldp->vlsh_bit_val)
169 return VLS_INVALID_HANDLE;
171 return (fd - ldp->vlsh_bit_val);
175 ldp_alloc_workers (void)
179 pool_alloc (ldp->workers, LDP_MAX_NWORKERS);
185 ldp_worker_ctx_t *ldpw;
191 ldp->vcl_needs_real_epoll = 1;
192 rv = vls_app_create (ldp_get_app_name ());
195 ldp->vcl_needs_real_epoll = 0;
196 if (rv == VPPCOM_EEXIST)
198 LDBG (2, "\nERROR: ldp_init: vppcom_app_create()"
199 " failed! rv = %d (%s)\n", rv, vppcom_retval_str (rv));
203 ldp->vcl_needs_real_epoll = 0;
204 ldp_alloc_workers ();
205 ldpw = ldp_worker_get_current ();
207 char *env_var_str = getenv (LDP_ENV_DEBUG);
211 if (sscanf (env_var_str, "%u", &tmp) != 1)
212 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
213 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
218 LDBG (0, "configured LDP debug level (%u) from env var "
219 LDP_ENV_DEBUG "!", ldp->debug);
223 env_var_str = getenv (LDP_ENV_APP_NAME);
226 ldp_set_app_name (env_var_str);
227 LDBG (0, "configured LDP app name (%s) from the env var "
228 LDP_ENV_APP_NAME "!", ldp->app_name);
231 env_var_str = getenv (LDP_ENV_SID_BIT);
235 if (sscanf (env_var_str, "%u", &sb) != 1)
237 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
238 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
239 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
241 else if (sb < LDP_SID_BIT_MIN)
243 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
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 small. Using LDP_SID_BIT_MIN"
248 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
249 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
251 else if (sb > LDP_SID_BIT_MAX)
253 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
254 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
256 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
257 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
258 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
259 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
263 ldp->vlsh_bit_val = (1 << sb);
264 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
266 LDBG (0, "configured LDP sid bit (%u) from "
267 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
268 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
271 /* Make sure there are enough bits in the fd set for vcl sessions */
272 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
274 LDBG (0, "ERROR: LDP vlsh bit value %d > FD_SETSIZE/2 %d!",
275 ldp->vlsh_bit_val, FD_SETSIZE / 2);
280 env_var_str = getenv (LDP_ENV_TLS_TRANS);
283 ldp->transparent_tls = 1;
287 pool_foreach (ldpw, ldp->workers) {
288 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
292 LDBG (0, "LDP initialization: done!");
297 #define ldp_init_check() \
298 if (PREDICT_FALSE (!ldp->init)) \
300 if ((errno = -ldp_init ())) \
312 vlsh = ldp_fd_to_vlsh (fd);
313 if (vlsh != VLS_INVALID_HANDLE)
315 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
318 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
320 rv = libc_close (epfd);
323 u32 size = sizeof (epfd);
326 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
329 else if (PREDICT_FALSE (epfd < 0))
336 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
338 rv = vls_close (vlsh);
347 LDBG (0, "fd %d: calling libc_close", fd);
348 rv = libc_close (fd);
356 read (int fd, void *buf, size_t nbytes)
363 vlsh = ldp_fd_to_vlsh (fd);
364 if (vlsh != VLS_INVALID_HANDLE)
366 size = vls_read (vlsh, buf, nbytes);
375 size = libc_read (fd, buf, nbytes);
382 readv (int fd, const struct iovec * iov, int iovcnt)
384 int rv = 0, i, total = 0;
390 vlsh = ldp_fd_to_vlsh (fd);
391 if (vlsh != VLS_INVALID_HANDLE)
393 for (i = 0; i < iovcnt; ++i)
395 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
401 if (rv < iov[i].iov_len)
405 if (rv < 0 && total == 0)
415 size = libc_readv (fd, iov, iovcnt);
422 write (int fd, const void *buf, size_t nbytes)
429 vlsh = ldp_fd_to_vlsh (fd);
430 if (vlsh != VLS_INVALID_HANDLE)
432 size = vls_write_msg (vlsh, (void *) buf, nbytes);
441 size = libc_write (fd, buf, nbytes);
448 writev (int fd, const struct iovec * iov, int iovcnt)
450 ssize_t size = 0, total = 0;
456 vlsh = ldp_fd_to_vlsh (fd);
457 if (vlsh != VLS_INVALID_HANDLE)
459 for (i = 0; i < iovcnt; ++i)
461 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
467 if (rv < iov[i].iov_len)
472 if (rv < 0 && total == 0)
482 size = libc_writev (fd, iov, iovcnt);
489 fcntl_internal (int fd, int cmd, va_list ap)
494 vlsh = ldp_fd_to_vlsh (fd);
495 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
496 if (vlsh != VLS_INVALID_HANDLE)
498 int flags = va_arg (ap, int);
501 size = sizeof (flags);
506 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
510 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
515 /* TODO handle this */
516 LDBG (0, "F_SETFD ignored flags %u", flags);
532 rv = libc_vfcntl64 (fd, cmd, ap);
534 rv = libc_vfcntl (fd, cmd, ap);
542 fcntl (int fd, int cmd, ...)
550 rv = fcntl_internal (fd, cmd, ap);
557 fcntl64 (int fd, int cmd, ...)
565 rv = fcntl_internal (fd, cmd, ap);
571 ioctl (int fd, unsigned long int cmd, ...)
581 vlsh = ldp_fd_to_vlsh (fd);
582 if (vlsh != VLS_INVALID_HANDLE)
587 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
592 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
593 u32 size = sizeof (flags);
595 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
596 * non-blocking, the flags should be read here and merged
599 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
615 rv = libc_vioctl (fd, cmd, ap);
623 ldp_select_init_maps (fd_set * __restrict original,
624 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
625 clib_bitmap_t ** vclb, int nfds, u32 minbits,
626 u32 n_bytes, uword * si_bits, uword * libc_bits)
628 uword si_bits_set, libc_bits_set;
632 clib_bitmap_validate (*vclb, minbits);
633 clib_bitmap_validate (*libcb, minbits);
634 clib_bitmap_validate (*resultb, minbits);
635 clib_memcpy_fast (*resultb, original, n_bytes);
636 memset (original, 0, n_bytes);
639 clib_bitmap_foreach (fd, *resultb) {
642 vlsh = ldp_fd_to_vlsh (fd);
643 if (vlsh == VLS_INVALID_HANDLE)
644 clib_bitmap_set_no_check (*libcb, fd, 1);
646 *vclb = clib_bitmap_set (*vclb, vlsh_to_session_index (vlsh), 1);
650 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
651 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
652 clib_bitmap_validate (*resultb, *si_bits);
654 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
655 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
659 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
669 clib_bitmap_foreach (si, vclb) {
670 vlsh = vls_session_index_to_vlsh (si);
671 ASSERT (vlsh != VLS_INVALID_HANDLE);
672 fd = ldp_vlsh_to_fd (vlsh);
673 if (PREDICT_FALSE (fd < 0))
686 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
694 clib_bitmap_foreach (fd, result)
695 FD_SET ((int)fd, libcb);
700 ldp_pselect (int nfds, fd_set * __restrict readfds,
701 fd_set * __restrict writefds,
702 fd_set * __restrict exceptfds,
703 const struct timespec *__restrict timeout,
704 const __sigset_t * __restrict sigmask)
706 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
707 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
708 struct timespec libc_tspec = { 0 };
709 f64 time_out, vcl_timeout = 0;
710 uword si_bits, libc_bits;
711 int rv, bits_set = 0;
719 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
720 clib_time_init (&ldpw->clib_time);
724 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
725 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
727 time_out += clib_time_now (&ldpw->clib_time);
729 /* select as fine grained sleep */
732 while (clib_time_now (&ldpw->clib_time) < time_out)
745 if (nfds <= ldp->vlsh_bit_val)
747 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
752 si_bits = libc_bits = 0;
753 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
756 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
757 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
758 &si_bits, &libc_bits);
760 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
761 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
762 minbits, n_bytes, &si_bits, &libc_bits);
764 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
765 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
766 minbits, n_bytes, &si_bits, &libc_bits);
768 if (PREDICT_FALSE (!si_bits && !libc_bits))
776 libc_tspec = timeout ? *timeout : libc_tspec;
783 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
784 vec_len (ldpw->si_rd_bitmap) *
785 sizeof (clib_bitmap_t));
787 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
788 vec_len (ldpw->si_wr_bitmap) *
789 sizeof (clib_bitmap_t));
791 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
792 vec_len (ldpw->si_ex_bitmap) *
793 sizeof (clib_bitmap_t));
795 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
796 writefds ? ldpw->wr_bitmap : NULL,
797 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
806 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
812 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
818 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
829 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
830 vec_len (ldpw->libc_rd_bitmap) *
831 sizeof (clib_bitmap_t));
833 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
834 vec_len (ldpw->libc_wr_bitmap) *
835 sizeof (clib_bitmap_t));
837 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
838 vec_len (ldpw->libc_ex_bitmap) *
839 sizeof (clib_bitmap_t));
841 rv = libc_pselect (libc_bits,
842 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
843 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
844 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
845 &libc_tspec, sigmask);
848 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
849 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
850 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
861 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
865 /* TBD: set timeout to amount of time left */
866 clib_bitmap_zero (ldpw->rd_bitmap);
867 clib_bitmap_zero (ldpw->si_rd_bitmap);
868 clib_bitmap_zero (ldpw->libc_rd_bitmap);
869 clib_bitmap_zero (ldpw->wr_bitmap);
870 clib_bitmap_zero (ldpw->si_wr_bitmap);
871 clib_bitmap_zero (ldpw->libc_wr_bitmap);
872 clib_bitmap_zero (ldpw->ex_bitmap);
873 clib_bitmap_zero (ldpw->si_ex_bitmap);
874 clib_bitmap_zero (ldpw->libc_ex_bitmap);
880 select (int nfds, fd_set * __restrict readfds,
881 fd_set * __restrict writefds,
882 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
884 struct timespec tspec;
888 tspec.tv_sec = timeout->tv_sec;
889 tspec.tv_nsec = timeout->tv_usec * 1000;
891 return ldp_pselect (nfds, readfds, writefds, exceptfds,
892 timeout ? &tspec : NULL, NULL);
897 pselect (int nfds, fd_set * __restrict readfds,
898 fd_set * __restrict writefds,
899 fd_set * __restrict exceptfds,
900 const struct timespec *__restrict timeout,
901 const __sigset_t * __restrict sigmask)
903 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
907 /* If transparent TLS mode is turned on, then ldp will load key and cert.
910 load_cert_key_pair (void)
912 char *cert_str = getenv (LDP_ENV_TLS_CERT);
913 char *key_str = getenv (LDP_ENV_TLS_KEY);
914 char cert_buf[4096], key_buf[4096];
915 int cert_size, key_size;
916 vppcom_cert_key_pair_t crypto;
920 if (!cert_str || !key_str)
922 LDBG (0, "ERROR: failed to read LDP environment %s\n",
927 fp = fopen (cert_str, "r");
930 LDBG (0, "ERROR: failed to open cert file %s \n", cert_str);
933 cert_size = fread (cert_buf, sizeof (char), sizeof (cert_buf), fp);
936 fp = fopen (key_str, "r");
939 LDBG (0, "ERROR: failed to open key file %s \n", key_str);
942 key_size = fread (key_buf, sizeof (char), sizeof (key_buf), fp);
945 crypto.cert = cert_buf;
946 crypto.key = key_buf;
947 crypto.cert_len = cert_size;
948 crypto.key_len = key_size;
949 ckp_index = vppcom_add_cert_key_pair (&crypto);
952 LDBG (0, "ERROR: failed to add cert key pair\n");
956 ldp->ckpair_index = ckp_index;
962 assign_cert_key_pair (vls_handle_t vlsh)
966 if (ldp->ckpair_index == ~0 && load_cert_key_pair () < 0)
969 ckp_len = sizeof (ldp->ckpair_index);
970 return vls_attr (vlsh, VPPCOM_ATTR_SET_CKPAIR, &ldp->ckpair_index, &ckp_len);
974 socket (int domain, int type, int protocol)
976 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
977 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
982 if (((domain == AF_INET) || (domain == AF_INET6)) &&
983 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
986 if (ldp->transparent_tls)
988 proto = VPPCOM_PROTO_TLS;
991 proto = ((sock_type == SOCK_DGRAM) ?
992 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
994 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
995 proto, vppcom_proto_str (proto), is_nonblocking);
997 vlsh = vls_create (proto, is_nonblocking);
1005 if (ldp->transparent_tls)
1007 if (assign_cert_key_pair (vlsh) < 0)
1010 rv = ldp_vlsh_to_fd (vlsh);
1015 LDBG (0, "calling libc_socket");
1016 rv = libc_socket (domain, type, protocol);
1023 * Create two new sockets, of type TYPE in domain DOMAIN and using
1024 * protocol PROTOCOL, which are connected to each other, and put file
1025 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
1026 * one will be chosen automatically.
1027 * Returns 0 on success, -1 for errors.
1030 socketpair (int domain, int type, int protocol, int fds[2])
1032 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1036 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1037 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1039 LDBG (0, "LDP-TBD");
1045 LDBG (1, "calling libc_socketpair");
1046 rv = libc_socketpair (domain, type, protocol, fds);
1053 bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1060 vlsh = ldp_fd_to_vlsh (fd);
1061 if (vlsh != VLS_INVALID_HANDLE)
1065 switch (addr->sa_family)
1068 if (len != sizeof (struct sockaddr_in))
1070 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1076 ep.is_ip4 = VPPCOM_IS_IP4;
1077 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1078 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1082 if (len != sizeof (struct sockaddr_in6))
1084 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1090 ep.is_ip4 = VPPCOM_IS_IP6;
1091 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1092 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1096 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1097 fd, vlsh, addr->sa_family);
1098 errno = EAFNOSUPPORT;
1102 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1105 rv = vls_bind (vlsh, &ep);
1106 if (rv != VPPCOM_OK)
1114 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1115 rv = libc_bind (fd, addr, len);
1119 LDBG (1, "fd %d: returning %d", fd, rv);
1125 ldp_copy_ep_to_sockaddr (__SOCKADDR_ARG addr, socklen_t * __restrict len,
1126 vppcom_endpt_t * ep)
1129 int sa_len, copy_len;
1133 if (addr && len && ep)
1135 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1136 switch (addr->sa_family)
1139 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1140 if (*len > sizeof (struct sockaddr_in))
1141 *len = sizeof (struct sockaddr_in);
1142 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1143 copy_len = *len - sa_len;
1145 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1150 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1151 if (*len > sizeof (struct sockaddr_in6))
1152 *len = sizeof (struct sockaddr_in6);
1153 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1154 copy_len = *len - sa_len;
1156 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1157 __in6_u.__u6_addr8, ep->ip, copy_len);
1170 getsockname (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1177 vlsh = ldp_fd_to_vlsh (fd);
1178 if (vlsh != VLS_INVALID_HANDLE)
1181 u8 addr_buf[sizeof (struct in6_addr)];
1182 u32 size = sizeof (ep);
1186 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1187 if (rv != VPPCOM_OK)
1194 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1195 if (rv != VPPCOM_OK)
1204 rv = libc_getsockname (fd, addr, len);
1211 connect (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
1220 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1226 vlsh = ldp_fd_to_vlsh (fd);
1227 if (vlsh != VLS_INVALID_HANDLE)
1231 switch (addr->sa_family)
1234 if (len != sizeof (struct sockaddr_in))
1236 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1242 ep.is_ip4 = VPPCOM_IS_IP4;
1243 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1244 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1248 if (len != sizeof (struct sockaddr_in6))
1250 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1256 ep.is_ip4 = VPPCOM_IS_IP6;
1257 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1258 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1262 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1263 fd, vlsh, addr->sa_family);
1264 errno = EAFNOSUPPORT;
1268 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1271 rv = vls_connect (vlsh, &ep);
1272 if (rv != VPPCOM_OK)
1280 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1283 rv = libc_connect (fd, addr, len);
1287 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1292 getpeername (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict len)
1299 vlsh = ldp_fd_to_vlsh (fd);
1300 if (vlsh != VLS_INVALID_HANDLE)
1303 u8 addr_buf[sizeof (struct in6_addr)];
1304 u32 size = sizeof (ep);
1307 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1308 if (rv != VPPCOM_OK)
1315 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1316 if (rv != VPPCOM_OK)
1325 rv = libc_getpeername (fd, addr, len);
1332 send (int fd, const void *buf, size_t n, int flags)
1334 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1339 if (vlsh != VLS_INVALID_HANDLE)
1341 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1342 if (size < VPPCOM_OK)
1350 size = libc_send (fd, buf, n, flags);
1357 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1359 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1365 vlsh = ldp_fd_to_vlsh (out_fd);
1366 if (vlsh != VLS_INVALID_HANDLE)
1369 ssize_t results = 0;
1370 size_t n_bytes_left = len;
1371 size_t bytes_to_read;
1374 u32 flags, flags_len = sizeof (flags);
1376 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1377 if (PREDICT_FALSE (rv != VPPCOM_OK))
1379 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1380 out_fd, vlsh, rv, vppcom_retval_str (rv));
1382 vec_reset_length (ldpw->io_buffer);
1390 off_t off = lseek (in_fd, *offset, SEEK_SET);
1391 if (PREDICT_FALSE (off == -1))
1397 ASSERT (off == *offset);
1402 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1405 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %ld (%s)!",
1406 out_fd, vlsh, size, vppcom_retval_str (size));
1407 vec_reset_length (ldpw->io_buffer);
1413 bytes_to_read = size;
1414 if (bytes_to_read == 0)
1416 if (flags & O_NONBLOCK)
1425 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1426 vec_validate (ldpw->io_buffer, bytes_to_read);
1427 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1432 vec_reset_length (ldpw->io_buffer);
1439 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1442 if (size == VPPCOM_EAGAIN)
1444 if (flags & O_NONBLOCK)
1455 vec_reset_length (ldpw->io_buffer);
1464 ASSERT (n_bytes_left >= nbytes);
1465 n_bytes_left = n_bytes_left - nbytes;
1467 while (n_bytes_left > 0);
1470 vec_reset_length (ldpw->io_buffer);
1473 off_t off = lseek (in_fd, *offset, SEEK_SET);
1474 if (PREDICT_FALSE (off == -1))
1480 ASSERT (off == *offset);
1481 *offset += results + 1;
1493 size = libc_sendfile (out_fd, in_fd, offset, len);
1501 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1503 return sendfile (out_fd, in_fd, offset, len);
1507 recv (int fd, void *buf, size_t n, int flags)
1514 vlsh = ldp_fd_to_vlsh (fd);
1515 if (vlsh != VLS_INVALID_HANDLE)
1517 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1526 size = libc_recv (fd, buf, n, flags);
1533 __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
1538 return recv (fd, buf, n, flags);
1542 ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n, int flags,
1543 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1545 vppcom_endpt_t *ep = 0;
1551 switch (addr->sa_family)
1554 ep->is_ip4 = VPPCOM_IS_IP4;
1556 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1557 ep->port = (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1561 ep->is_ip4 = VPPCOM_IS_IP6;
1563 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1565 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1569 return EAFNOSUPPORT;
1573 return vls_sendto (vlsh, (void *) buf, n, flags, ep);
1577 ldp_vls_recvfrom (vls_handle_t vlsh, void *__restrict buf, size_t n,
1578 int flags, __SOCKADDR_ARG addr,
1579 socklen_t * __restrict addr_len)
1581 u8 src_addr[sizeof (struct sockaddr_in6)];
1589 size = vls_recvfrom (vlsh, buf, n, flags, &ep);
1593 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1599 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1605 sendto (int fd, const void *buf, size_t n, int flags,
1606 __CONST_SOCKADDR_ARG addr, socklen_t addr_len)
1613 vlsh = ldp_fd_to_vlsh (fd);
1614 if (vlsh != VLS_INVALID_HANDLE)
1616 size = ldp_vls_sendo (vlsh, buf, n, flags, addr, addr_len);
1625 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1632 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1633 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1640 vlsh = ldp_fd_to_vlsh (fd);
1641 if (vlsh != VLS_INVALID_HANDLE)
1643 size = ldp_vls_recvfrom (vlsh, buf, n, flags, addr, addr_len);
1652 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1659 sendmsg (int fd, const struct msghdr * msg, int flags)
1666 vlsh = ldp_fd_to_vlsh (fd);
1667 if (vlsh != VLS_INVALID_HANDLE)
1669 struct iovec *iov = msg->msg_iov;
1673 for (i = 0; i < msg->msg_iovlen; ++i)
1675 rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
1676 msg->msg_name, msg->msg_namelen);
1682 if (rv < iov[i].iov_len)
1687 if (rv < 0 && total == 0)
1697 size = libc_sendmsg (fd, msg, flags);
1705 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1708 const char *func_str;
1709 u32 sh = ldp_fd_to_vlsh (fd);
1713 if (sh != VLS_INVALID_HANDLE)
1715 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1721 func_str = "libc_sendmmsg";
1724 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1725 "vmessages %p, vlen %u, flags 0x%x",
1726 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1728 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1735 int errno_val = errno;
1737 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1738 "rv %d, errno = %d", getpid (), fd, fd,
1739 func_str, size, errno_val);
1743 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1744 getpid (), fd, fd, size, size);
1751 recvmsg (int fd, struct msghdr * msg, int flags)
1758 vlsh = ldp_fd_to_vlsh (fd);
1759 if (vlsh != VLS_INVALID_HANDLE)
1761 struct iovec *iov = msg->msg_iov;
1762 ssize_t max_deq, total = 0;
1765 max_deq = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
1769 for (i = 0; i < msg->msg_iovlen; i++)
1771 rv = ldp_vls_recvfrom (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
1772 (i == 0 ? msg->msg_name : NULL),
1773 (i == 0 ? &msg->msg_namelen : NULL));
1779 if (rv < iov[i].iov_len)
1782 if (total >= max_deq)
1786 if (rv < 0 && total == 0)
1796 size = libc_recvmsg (fd, msg, flags);
1804 recvmmsg (int fd, struct mmsghdr *vmessages,
1805 unsigned int vlen, int flags, struct timespec *tmo)
1808 const char *func_str;
1809 u32 sh = ldp_fd_to_vlsh (fd);
1813 if (sh != VLS_INVALID_HANDLE)
1815 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1821 func_str = "libc_recvmmsg";
1824 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1825 "vmessages %p, vlen %u, flags 0x%x, tmo %p",
1826 getpid (), fd, fd, func_str, vmessages, vlen,
1829 size = libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1836 int errno_val = errno;
1838 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1839 "rv %d, errno = %d", getpid (), fd, fd,
1840 func_str, size, errno_val);
1844 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1845 getpid (), fd, fd, size, size);
1852 getsockopt (int fd, int level, int optname,
1853 void *__restrict optval, socklen_t * __restrict optlen)
1860 vlsh = ldp_fd_to_vlsh (fd);
1861 if (vlsh != VLS_INVALID_HANDLE)
1871 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
1875 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
1879 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
1883 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
1887 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
1889 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
1890 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
1891 memset (optval, 0, *optlen);
1897 case TCP_CONGESTION:
1898 *optlen = strlen ("cubic");
1899 strncpy (optval, "cubic", *optlen + 1);
1903 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
1904 "optname %d unsupported!", fd, vlsh, optname);
1912 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
1915 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
1916 "optname %d unsupported!", fd, vlsh, optname);
1924 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
1927 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
1930 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
1931 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
1934 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
1938 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
1942 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
1945 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEPORT, optval, optlen);
1948 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
1951 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_DOMAIN, optval, optlen);
1954 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
1956 case SO_BINDTODEVICE:
1960 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
1961 "optname %d unsupported!", fd, vlsh, optname);
1969 if (rv != VPPCOM_OK)
1977 rv = libc_getsockopt (fd, level, optname, optval, optlen);
1984 setsockopt (int fd, int level, int optname,
1985 const void *optval, socklen_t optlen)
1992 vlsh = ldp_fd_to_vlsh (fd);
1993 if (vlsh != VLS_INVALID_HANDLE)
2003 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
2004 (void *) optval, &optlen);
2007 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
2008 (void *) optval, &optlen);
2011 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
2012 (void *) optval, &optlen);
2015 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
2016 (void *) optval, &optlen);
2018 case TCP_CONGESTION:
2024 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
2025 "optname %d unsupported!", fd, vlsh, optname);
2033 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
2034 (void *) optval, &optlen);
2037 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
2038 "optname %d unsupported!", fd, vlsh, optname);
2046 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
2047 (void *) optval, &optlen);
2050 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
2051 (void *) optval, &optlen);
2054 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEPORT, (void *) optval,
2058 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
2059 (void *) optval, &optlen);
2065 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
2066 "optname %d unsupported!", fd, vlsh, optname);
2074 if (rv != VPPCOM_OK)
2082 rv = libc_setsockopt (fd, level, optname, optval, optlen);
2089 listen (int fd, int n)
2096 vlsh = ldp_fd_to_vlsh (fd);
2097 if (vlsh != VLS_INVALID_HANDLE)
2099 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2101 rv = vls_listen (vlsh, n);
2102 if (rv != VPPCOM_OK)
2110 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2111 rv = libc_listen (fd, n);
2114 LDBG (1, "fd %d: returning %d", fd, rv);
2119 ldp_accept4 (int listen_fd, __SOCKADDR_ARG addr,
2120 socklen_t * __restrict addr_len, int flags)
2122 vls_handle_t listen_vlsh, accept_vlsh;
2127 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2128 if (listen_vlsh != VLS_INVALID_HANDLE)
2131 u8 src_addr[sizeof (struct sockaddr_in6)];
2132 memset (&ep, 0, sizeof (ep));
2135 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2136 " ep %p, flags 0x%x", listen_fd, listen_vlsh, &ep, flags);
2138 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2139 if (accept_vlsh < 0)
2141 errno = -accept_vlsh;
2146 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2147 if (rv != VPPCOM_OK)
2149 (void) vls_close (accept_vlsh);
2155 rv = ldp_vlsh_to_fd (accept_vlsh);
2161 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2162 " flags 0x%x", listen_fd, addr, addr_len, flags);
2164 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2167 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2173 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2176 return ldp_accept4 (fd, addr, addr_len, flags);
2180 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2182 return ldp_accept4 (fd, addr, addr_len, 0);
2186 shutdown (int fd, int how)
2193 vlsh = ldp_fd_to_vlsh (fd);
2194 if (vlsh != VLS_INVALID_HANDLE)
2196 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2197 rv = vls_shutdown (vlsh, how);
2201 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2202 rv = libc_shutdown (fd, how);
2209 epoll_create1 (int flags)
2211 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2217 if (ldp->vcl_needs_real_epoll || vls_use_real_epoll ())
2219 /* Make sure workers have been allocated */
2222 ldp_alloc_workers ();
2223 ldpw = ldp_worker_get_current ();
2225 rv = libc_epoll_create1 (flags);
2226 ldp->vcl_needs_real_epoll = 0;
2227 ldpw->vcl_mq_epfd = rv;
2228 LDBG (0, "created vcl epfd %u", rv);
2232 vlsh = vls_epoll_create ();
2233 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2240 rv = ldp_vlsh_to_fd (vlsh);
2242 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2247 epoll_create (int size)
2249 return epoll_create1 (0);
2253 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2255 vls_handle_t vep_vlsh, vlsh;
2260 vep_vlsh = ldp_fd_to_vlsh (epfd);
2261 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2263 /* The LDP epoll_create1 always creates VCL epfd's.
2264 * The app should never have a kernel base epoll fd unless it
2265 * was acquired outside of the LD_PRELOAD process context.
2266 * In any case, if we get one, punt it to libc_epoll_ctl.
2268 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2269 " event %p", epfd, op, fd, event);
2271 rv = libc_epoll_ctl (epfd, op, fd, event);
2275 vlsh = ldp_fd_to_vlsh (fd);
2277 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2280 if (vlsh != VLS_INVALID_HANDLE)
2282 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2283 " event %p", epfd, vep_vlsh, op, vlsh, event);
2285 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2286 if (rv != VPPCOM_OK)
2295 u32 size = sizeof (epfd);
2297 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2300 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2301 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2303 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2310 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2319 else if (PREDICT_FALSE (libc_epfd < 0))
2326 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2327 " event %p", epfd, libc_epfd, op, fd, event);
2329 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2337 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2338 int timeout, const sigset_t * sigmask)
2340 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2341 double time_to_wait = (double) 0, max_time;
2342 int libc_epfd, rv = 0;
2343 vls_handle_t ep_vlsh;
2347 if (PREDICT_FALSE (!events || (timeout < -1)))
2353 if (epfd == ldpw->vcl_mq_epfd)
2354 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2356 ep_vlsh = ldp_fd_to_vlsh (epfd);
2357 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2359 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2364 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2365 clib_time_init (&ldpw->clib_time);
2366 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2367 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2369 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2370 if (PREDICT_FALSE (libc_epfd < 0))
2377 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2378 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2379 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2382 if (!ldpw->epoll_wait_vcl)
2384 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2387 ldpw->epoll_wait_vcl = 1;
2398 ldpw->epoll_wait_vcl = 0;
2402 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2407 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2414 ldp_epoll_pwait_eventfd (int epfd, struct epoll_event *events,
2415 int maxevents, int timeout, const sigset_t * sigmask)
2417 ldp_worker_ctx_t *ldpw;
2418 int libc_epfd, rv = 0, num_ev;
2419 vls_handle_t ep_vlsh;
2423 if (PREDICT_FALSE (!events || (timeout < -1)))
2429 /* Make sure the vcl worker is valid. Could be that epoll fd was created on
2430 * one thread but it is now used on another */
2431 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2432 vls_register_vcl_worker ();
2434 ldpw = ldp_worker_get_current ();
2435 if (epfd == ldpw->vcl_mq_epfd)
2436 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2438 ep_vlsh = ldp_fd_to_vlsh (epfd);
2439 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2441 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2446 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2447 if (PREDICT_FALSE (!libc_epfd))
2449 u32 size = sizeof (epfd);
2451 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2452 "EPOLL_CLOEXEC", epfd, ep_vlsh);
2453 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2460 rv = vls_attr (ep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd, &size);
2468 if (PREDICT_FALSE (libc_epfd <= 0))
2475 if (PREDICT_FALSE (!ldpw->mq_epfd_added))
2477 struct epoll_event e = { 0 };
2479 e.data.fd = ldpw->vcl_mq_epfd;
2480 if (libc_epoll_ctl (libc_epfd, EPOLL_CTL_ADD, ldpw->vcl_mq_epfd, &e) <
2483 LDBG (0, "epfd %d, add libc mq epoll fd %d to libc epoll fd %d",
2484 epfd, ldpw->vcl_mq_epfd, libc_epfd);
2488 ldpw->mq_epfd_added = 1;
2491 /* Request to only drain unhandled to prevent libc_epoll_wait starved */
2492 rv = vls_epoll_wait (ep_vlsh, events, maxevents, -2);
2495 else if (PREDICT_FALSE (rv < 0))
2502 rv = libc_epoll_pwait (libc_epfd, events, maxevents, timeout, sigmask);
2505 for (int i = 0; i < rv; i++)
2507 if (events[i].data.fd == ldpw->vcl_mq_epfd)
2509 /* We should remove mq epoll fd from events. */
2513 events[i].events = events[rv].events;
2514 events[i].data.u64 = events[rv].data.u64;
2516 num_ev = vls_epoll_wait (ep_vlsh, &events[rv], maxevents - rv, 0);
2517 if (PREDICT_TRUE (num_ev > 0))
2528 epoll_pwait (int epfd, struct epoll_event *events,
2529 int maxevents, int timeout, const sigset_t * sigmask)
2531 if (vls_use_eventfd ())
2532 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout,
2535 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2539 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2541 if (vls_use_eventfd ())
2542 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout, NULL);
2544 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2548 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2550 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2551 int rv, i, n_revents = 0;
2556 LDBG (3, "fds %p, nfds %ld, timeout %d", fds, nfds, timeout);
2558 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2559 clib_time_init (&ldpw->clib_time);
2561 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2562 max_time += clib_time_now (&ldpw->clib_time);
2564 for (i = 0; i < nfds; i++)
2569 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2570 if (vlsh != VLS_INVALID_HANDLE)
2572 fds[i].fd = -fds[i].fd;
2573 vec_add2 (ldpw->vcl_poll, vp, 1);
2575 vp->sh = vlsh_to_sh (vlsh);
2576 vp->events = fds[i].events;
2577 #ifdef __USE_XOPEN2K
2578 if (fds[i].events & POLLRDNORM)
2579 vp->events |= POLLIN;
2580 if (fds[i].events & POLLWRNORM)
2581 vp->events |= POLLOUT;
2583 vp->revents = fds[i].revents;
2587 vec_add1 (ldpw->libc_poll, fds[i]);
2588 vec_add1 (ldpw->libc_poll_idxs, i);
2594 if (vec_len (ldpw->vcl_poll))
2596 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2607 if (vec_len (ldpw->libc_poll))
2609 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2622 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2626 vec_foreach (vp, ldpw->vcl_poll)
2628 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2629 fds[vp->fds_ndx].revents = vp->revents;
2630 #ifdef __USE_XOPEN2K
2631 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2632 (fds[vp->fds_ndx].events & POLLRDNORM))
2633 fds[vp->fds_ndx].revents |= POLLRDNORM;
2634 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2635 (fds[vp->fds_ndx].events & POLLWRNORM))
2636 fds[vp->fds_ndx].revents |= POLLWRNORM;
2639 vec_reset_length (ldpw->vcl_poll);
2641 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2643 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2645 vec_reset_length (ldpw->libc_poll_idxs);
2646 vec_reset_length (ldpw->libc_poll);
2653 ppoll (struct pollfd *fds, nfds_t nfds,
2654 const struct timespec *timeout, const sigset_t * sigmask)
2658 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2666 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2668 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2671 * This function is called when the library is loaded
2674 ldp_constructor (void)
2676 swrap_constructor ();
2677 if (ldp_init () != 0)
2679 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2683 else if (LDP_DEBUG > 0)
2684 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2688 * This function is called when the library is unloaded
2691 ldp_destructor (void)
2694 swrap_destructor ();
2699 /* Don't use clib_warning() here because that calls writev()
2700 * which will call ldp_init().
2703 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2704 __func__, __LINE__, getpid ());
2709 * fd.io coding-style-patch-verification: ON
2712 * eval: (c-set-style "gnu")