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.
16 #ifdef HAVE_GNU_SOURCE
27 #include <sys/resource.h>
28 #include <netinet/tcp.h>
29 #include <netinet/udp.h>
31 #include <vcl/ldp_socket_wrapper.h>
35 #include <vcl/vcl_locked.h>
36 #include <vppinfra/time.h>
37 #include <vppinfra/bitmap.h>
38 #include <vppinfra/lock.h>
39 #include <vppinfra/pool.h>
40 #include <vppinfra/hash.h>
42 #define HAVE_CONSTRUCTOR_ATTRIBUTE
43 #ifdef HAVE_CONSTRUCTOR_ATTRIBUTE
44 #define CONSTRUCTOR_ATTRIBUTE \
45 __attribute__ ((constructor))
47 #define CONSTRUCTOR_ATTRIBUTE
48 #endif /* HAVE_CONSTRUCTOR_ATTRIBUTE */
50 #define HAVE_DESTRUCTOR_ATTRIBUTE
51 #ifdef HAVE_DESTRUCTOR_ATTRIBUTE
52 #define DESTRUCTOR_ATTRIBUTE \
53 __attribute__ ((destructor))
55 #define DESTRUCTOR_ATTRIBUTE
58 #define LDP_MAX_NWORKERS 32
60 #ifdef HAVE_GNU_SOURCE
61 #define SOCKADDR_GET_SA(__addr) __addr.__sockaddr__;
63 #define SOCKADDR_GET_SA(__addr) _addr;
67 #define UDP_SEGMENT 103
70 typedef struct ldp_worker_ctx_
73 clib_time_t clib_time;
78 clib_bitmap_t *rd_bitmap;
79 clib_bitmap_t *wr_bitmap;
80 clib_bitmap_t *ex_bitmap;
81 clib_bitmap_t *si_rd_bitmap;
82 clib_bitmap_t *si_wr_bitmap;
83 clib_bitmap_t *si_ex_bitmap;
84 clib_bitmap_t *libc_rd_bitmap;
85 clib_bitmap_t *libc_wr_bitmap;
86 clib_bitmap_t *libc_ex_bitmap;
92 struct pollfd *libc_poll;
104 /* clib_bitmap_t, fd_mask and vcl_si_set are used interchangeably. Make sure
105 * they are the same size */
106 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
107 "ldp bitmap size mismatch");
108 STATIC_ASSERT (sizeof (vcl_si_set) == sizeof (fd_mask),
109 "ldp bitmap size mismatch");
113 ldp_worker_ctx_t *workers;
115 char app_name[LDP_APP_NAME_MAX];
120 /** vcl needs next epoll_create to go to libc_epoll */
121 u8 vcl_needs_real_epoll;
124 * crypto state used only for testing
130 #define LDP_DEBUG ldp->debug
132 #define LDBG(_lvl, _fmt, _args...) \
133 if (ldp->debug > _lvl) \
135 int errno_saved = errno; \
136 fprintf (stderr, "ldp<%d>: " _fmt "\n", getpid(), ##_args); \
137 errno = errno_saved; \
140 static ldp_main_t ldp_main = {
141 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
142 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
143 .debug = LDP_DEBUG_INIT,
144 .transparent_tls = 0,
148 static ldp_main_t *ldp = &ldp_main;
150 static inline ldp_worker_ctx_t *
151 ldp_worker_get_current (void)
153 return (ldp->workers + vppcom_worker_index ());
157 * RETURN: 0 on success or -1 on error.
160 ldp_set_app_name (char *app_name)
162 snprintf (ldp->app_name, LDP_APP_NAME_MAX, "%s-ldp-%d", app_name, getpid ());
168 if (ldp->app_name[0] == '\0')
169 ldp_set_app_name (program_invocation_short_name);
171 return ldp->app_name;
175 ldp_vlsh_to_fd (vls_handle_t vlsh)
177 return (vlsh + ldp->vlsh_bit_val);
180 static inline vls_handle_t
181 ldp_fd_to_vlsh (int fd)
183 if (fd < ldp->vlsh_bit_val)
184 return VLS_INVALID_HANDLE;
186 return (fd - ldp->vlsh_bit_val);
190 ldp_alloc_workers (void)
194 pool_alloc (ldp->workers, LDP_MAX_NWORKERS);
200 ldp_worker_ctx_t *ldpw;
206 ldp->vcl_needs_real_epoll = 1;
207 rv = vls_app_create (ldp_get_app_name ());
210 ldp->vcl_needs_real_epoll = 0;
211 if (rv == VPPCOM_EEXIST)
213 LDBG (2, "\nERROR: ldp_init: vppcom_app_create()"
214 " failed! rv = %d (%s)\n", rv, vppcom_retval_str (rv));
218 ldp->vcl_needs_real_epoll = 0;
219 ldp_alloc_workers ();
220 ldpw = ldp_worker_get_current ();
222 char *env_var_str = getenv (LDP_ENV_DEBUG);
226 if (sscanf (env_var_str, "%u", &tmp) != 1)
227 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
228 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
233 LDBG (0, "configured LDP debug level (%u) from env var "
234 LDP_ENV_DEBUG "!", ldp->debug);
238 env_var_str = getenv (LDP_ENV_APP_NAME);
241 ldp_set_app_name (env_var_str);
242 LDBG (0, "configured LDP app name (%s) from the env var "
243 LDP_ENV_APP_NAME "!", ldp->app_name);
246 env_var_str = getenv (LDP_ENV_SID_BIT);
250 if (sscanf (env_var_str, "%u", &sb) != 1)
252 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
253 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
254 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
256 else if (sb < LDP_SID_BIT_MIN)
258 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
259 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
261 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
262 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
263 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
264 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
266 else if (sb > LDP_SID_BIT_MAX)
268 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
269 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
271 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
272 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
273 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
274 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
278 ldp->vlsh_bit_val = (1 << sb);
279 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
281 LDBG (0, "configured LDP sid bit (%u) from "
282 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
283 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
286 /* Make sure there are enough bits in the fd set for vcl sessions */
287 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
289 /* Only valid for select/pselect, so just WARNING and not exit */
291 "WARNING: LDP vlsh bit value %d > FD_SETSIZE/2 %d, "
292 "select/pselect not supported now!",
293 ldp->vlsh_bit_val, FD_SETSIZE / 2);
296 env_var_str = getenv (LDP_ENV_TLS_TRANS);
299 ldp->transparent_tls = 1;
303 pool_foreach (ldpw, ldp->workers) {
304 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
308 LDBG (0, "LDP initialization: done!");
313 #define ldp_init_check() \
314 if (PREDICT_FALSE (!ldp->init)) \
316 if ((errno = -ldp_init ())) \
328 vlsh = ldp_fd_to_vlsh (fd);
329 if (vlsh != VLS_INVALID_HANDLE)
331 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
334 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
335 u32 size = sizeof (epfd);
337 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
340 ldpw->mq_epfd_added = 0;
343 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
345 else if (PREDICT_FALSE (epfd < 0))
352 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
354 rv = vls_close (vlsh);
363 LDBG (0, "fd %d: calling libc_close", fd);
364 rv = libc_close (fd);
372 read (int fd, void *buf, size_t nbytes)
379 vlsh = ldp_fd_to_vlsh (fd);
380 if (vlsh != VLS_INVALID_HANDLE)
382 size = vls_read (vlsh, buf, nbytes);
391 size = libc_read (fd, buf, nbytes);
398 readv (int fd, const struct iovec * iov, int iovcnt)
400 int rv = 0, i, total = 0;
406 vlsh = ldp_fd_to_vlsh (fd);
407 if (vlsh != VLS_INVALID_HANDLE)
409 for (i = 0; i < iovcnt; ++i)
411 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
417 if (rv < iov[i].iov_len)
421 if (rv < 0 && total == 0)
431 size = libc_readv (fd, iov, iovcnt);
438 write (int fd, const void *buf, size_t nbytes)
445 vlsh = ldp_fd_to_vlsh (fd);
446 if (vlsh != VLS_INVALID_HANDLE)
448 size = vls_write_msg (vlsh, (void *) buf, nbytes);
457 size = libc_write (fd, buf, nbytes);
464 writev (int fd, const struct iovec * iov, int iovcnt)
466 ssize_t size = 0, total = 0;
472 vlsh = ldp_fd_to_vlsh (fd);
473 if (vlsh != VLS_INVALID_HANDLE)
475 for (i = 0; i < iovcnt; ++i)
477 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
483 if (rv < iov[i].iov_len)
488 if (rv < 0 && total == 0)
498 size = libc_writev (fd, iov, iovcnt);
505 fcntl_internal (int fd, int cmd, va_list ap)
510 vlsh = ldp_fd_to_vlsh (fd);
511 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
512 if (vlsh != VLS_INVALID_HANDLE)
514 int flags = va_arg (ap, int);
517 size = sizeof (flags);
522 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
526 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
531 /* TODO handle this */
532 LDBG (0, "F_SETFD ignored flags %u", flags);
548 rv = libc_vfcntl64 (fd, cmd, ap);
550 rv = libc_vfcntl (fd, cmd, ap);
558 fcntl (int fd, int cmd, ...)
566 rv = fcntl_internal (fd, cmd, ap);
573 fcntl64 (int fd, int cmd, ...)
581 rv = fcntl_internal (fd, cmd, ap);
587 ioctl (int fd, unsigned long int cmd, ...)
597 vlsh = ldp_fd_to_vlsh (fd);
598 if (vlsh != VLS_INVALID_HANDLE)
603 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
608 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
609 u32 size = sizeof (flags);
611 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
612 * non-blocking, the flags should be read here and merged
615 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
631 rv = libc_vioctl (fd, cmd, ap);
639 ldp_select_init_maps (fd_set * __restrict original,
640 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
641 clib_bitmap_t ** vclb, int nfds, u32 minbits,
642 u32 n_bytes, uword * si_bits, uword * libc_bits)
644 uword si_bits_set, libc_bits_set;
648 clib_bitmap_validate (*vclb, minbits);
649 clib_bitmap_validate (*libcb, minbits);
650 clib_bitmap_validate (*resultb, minbits);
651 clib_memcpy_fast (*resultb, original, n_bytes);
652 memset (original, 0, n_bytes);
655 clib_bitmap_foreach (fd, *resultb) {
658 vlsh = ldp_fd_to_vlsh (fd);
659 if (vlsh == VLS_INVALID_HANDLE)
660 clib_bitmap_set_no_check (*libcb, fd, 1);
662 *vclb = clib_bitmap_set (*vclb, vlsh_to_session_index (vlsh), 1);
666 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
667 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
668 clib_bitmap_validate (*resultb, *si_bits);
670 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
671 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
675 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
685 clib_bitmap_foreach (si, vclb) {
686 vlsh = vls_session_index_to_vlsh (si);
687 ASSERT (vlsh != VLS_INVALID_HANDLE);
688 fd = ldp_vlsh_to_fd (vlsh);
689 if (PREDICT_FALSE (fd < 0))
702 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
710 clib_bitmap_foreach (fd, result)
711 FD_SET ((int)fd, libcb);
716 ldp_pselect (int nfds, fd_set * __restrict readfds,
717 fd_set * __restrict writefds,
718 fd_set * __restrict exceptfds,
719 const struct timespec *__restrict timeout,
720 const __sigset_t * __restrict sigmask)
722 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
723 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
724 struct timespec libc_tspec = { 0 };
725 f64 time_out, vcl_timeout = 0;
726 uword si_bits, libc_bits;
727 int rv, bits_set = 0;
735 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
736 clib_time_init (&ldpw->clib_time);
740 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
741 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
743 time_out += clib_time_now (&ldpw->clib_time);
745 /* select as fine grained sleep */
748 while (clib_time_now (&ldpw->clib_time) < time_out)
761 if (nfds <= ldp->vlsh_bit_val)
763 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
768 si_bits = libc_bits = 0;
769 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
772 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
773 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
774 &si_bits, &libc_bits);
776 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
777 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
778 minbits, n_bytes, &si_bits, &libc_bits);
780 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
781 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
782 minbits, n_bytes, &si_bits, &libc_bits);
784 if (PREDICT_FALSE (!si_bits && !libc_bits))
792 libc_tspec = timeout ? *timeout : libc_tspec;
799 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
800 vec_len (ldpw->si_rd_bitmap) *
801 sizeof (clib_bitmap_t));
803 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
804 vec_len (ldpw->si_wr_bitmap) *
805 sizeof (clib_bitmap_t));
807 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
808 vec_len (ldpw->si_ex_bitmap) *
809 sizeof (clib_bitmap_t));
811 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
812 writefds ? ldpw->wr_bitmap : NULL,
813 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
822 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
828 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
834 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
845 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
846 vec_len (ldpw->libc_rd_bitmap) *
847 sizeof (clib_bitmap_t));
849 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
850 vec_len (ldpw->libc_wr_bitmap) *
851 sizeof (clib_bitmap_t));
853 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
854 vec_len (ldpw->libc_ex_bitmap) *
855 sizeof (clib_bitmap_t));
857 rv = libc_pselect (libc_bits,
858 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
859 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
860 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
861 &libc_tspec, sigmask);
864 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
865 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
866 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
877 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
881 /* TBD: set timeout to amount of time left */
882 clib_bitmap_zero (ldpw->rd_bitmap);
883 clib_bitmap_zero (ldpw->si_rd_bitmap);
884 clib_bitmap_zero (ldpw->libc_rd_bitmap);
885 clib_bitmap_zero (ldpw->wr_bitmap);
886 clib_bitmap_zero (ldpw->si_wr_bitmap);
887 clib_bitmap_zero (ldpw->libc_wr_bitmap);
888 clib_bitmap_zero (ldpw->ex_bitmap);
889 clib_bitmap_zero (ldpw->si_ex_bitmap);
890 clib_bitmap_zero (ldpw->libc_ex_bitmap);
896 select (int nfds, fd_set * __restrict readfds,
897 fd_set * __restrict writefds,
898 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
900 struct timespec tspec;
904 tspec.tv_sec = timeout->tv_sec;
905 tspec.tv_nsec = timeout->tv_usec * 1000;
907 return ldp_pselect (nfds, readfds, writefds, exceptfds,
908 timeout ? &tspec : NULL, NULL);
913 pselect (int nfds, fd_set * __restrict readfds,
914 fd_set * __restrict writefds,
915 fd_set * __restrict exceptfds,
916 const struct timespec *__restrict timeout,
917 const __sigset_t * __restrict sigmask)
919 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
923 /* If transparent TLS mode is turned on, then ldp will load key and cert.
926 load_cert_key_pair (void)
928 char *cert_str = getenv (LDP_ENV_TLS_CERT);
929 char *key_str = getenv (LDP_ENV_TLS_KEY);
930 char cert_buf[4096], key_buf[4096];
931 int cert_size, key_size;
932 vppcom_cert_key_pair_t crypto;
936 if (!cert_str || !key_str)
938 LDBG (0, "ERROR: failed to read LDP environment %s\n",
943 fp = fopen (cert_str, "r");
946 LDBG (0, "ERROR: failed to open cert file %s \n", cert_str);
949 cert_size = fread (cert_buf, sizeof (char), sizeof (cert_buf), fp);
952 fp = fopen (key_str, "r");
955 LDBG (0, "ERROR: failed to open key file %s \n", key_str);
958 key_size = fread (key_buf, sizeof (char), sizeof (key_buf), fp);
961 crypto.cert = cert_buf;
962 crypto.key = key_buf;
963 crypto.cert_len = cert_size;
964 crypto.key_len = key_size;
965 ckp_index = vppcom_add_cert_key_pair (&crypto);
968 LDBG (0, "ERROR: failed to add cert key pair\n");
972 ldp->ckpair_index = ckp_index;
978 assign_cert_key_pair (vls_handle_t vlsh)
982 if (ldp->ckpair_index == ~0 && load_cert_key_pair () < 0)
985 ckp_len = sizeof (ldp->ckpair_index);
986 return vls_attr (vlsh, VPPCOM_ATTR_SET_CKPAIR, &ldp->ckpair_index, &ckp_len);
990 socket (int domain, int type, int protocol)
992 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
993 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
998 if (((domain == AF_INET) || (domain == AF_INET6)) &&
999 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1002 if (ldp->transparent_tls)
1004 proto = VPPCOM_PROTO_TLS;
1007 proto = ((sock_type == SOCK_DGRAM) ?
1008 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
1010 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
1011 proto, vppcom_proto_str (proto), is_nonblocking);
1013 vlsh = vls_create (proto, is_nonblocking);
1021 if (ldp->transparent_tls)
1023 if (assign_cert_key_pair (vlsh) < 0)
1026 rv = ldp_vlsh_to_fd (vlsh);
1031 LDBG (0, "calling libc_socket");
1032 rv = libc_socket (domain, type, protocol);
1039 * Create two new sockets, of type TYPE in domain DOMAIN and using
1040 * protocol PROTOCOL, which are connected to each other, and put file
1041 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
1042 * one will be chosen automatically.
1043 * Returns 0 on success, -1 for errors.
1046 socketpair (int domain, int type, int protocol, int fds[2])
1048 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1052 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1053 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1055 LDBG (0, "LDP-TBD");
1061 LDBG (1, "calling libc_socketpair");
1062 rv = libc_socketpair (domain, type, protocol, fds);
1069 bind (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1071 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1077 vlsh = ldp_fd_to_vlsh (fd);
1078 if (vlsh != VLS_INVALID_HANDLE)
1082 switch (addr->sa_family)
1085 if (len != sizeof (struct sockaddr_in))
1087 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1093 ep.is_ip4 = VPPCOM_IS_IP4;
1094 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1095 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1099 if (len != sizeof (struct sockaddr_in6))
1101 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1107 ep.is_ip4 = VPPCOM_IS_IP6;
1108 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1109 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1113 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1114 fd, vlsh, addr->sa_family);
1115 errno = EAFNOSUPPORT;
1119 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1122 rv = vls_bind (vlsh, &ep);
1123 if (rv != VPPCOM_OK)
1131 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1132 rv = libc_bind (fd, addr, len);
1136 LDBG (1, "fd %d: returning %d", fd, rv);
1142 ldp_copy_ep_to_sockaddr (struct sockaddr *addr, socklen_t *__restrict len,
1145 int rv = 0, sa_len, copy_len;
1149 if (addr && len && ep)
1151 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1152 switch (addr->sa_family)
1155 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1156 if (*len > sizeof (struct sockaddr_in))
1157 *len = sizeof (struct sockaddr_in);
1158 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1159 copy_len = *len - sa_len;
1161 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1166 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1167 if (*len > sizeof (struct sockaddr_in6))
1168 *len = sizeof (struct sockaddr_in6);
1169 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1170 copy_len = *len - sa_len;
1172 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1173 __in6_u.__u6_addr8, ep->ip, copy_len);
1186 getsockname (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1188 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1194 vlsh = ldp_fd_to_vlsh (fd);
1195 if (vlsh != VLS_INVALID_HANDLE)
1198 u8 addr_buf[sizeof (struct in6_addr)];
1199 u32 size = sizeof (ep);
1203 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1204 if (rv != VPPCOM_OK)
1211 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1212 if (rv != VPPCOM_OK)
1221 rv = libc_getsockname (fd, _addr, len);
1228 connect (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1230 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1238 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1244 vlsh = ldp_fd_to_vlsh (fd);
1245 if (vlsh != VLS_INVALID_HANDLE)
1249 switch (addr->sa_family)
1252 if (len != sizeof (struct sockaddr_in))
1254 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1260 ep.is_ip4 = VPPCOM_IS_IP4;
1261 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1262 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1266 if (len != sizeof (struct sockaddr_in6))
1268 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1274 ep.is_ip4 = VPPCOM_IS_IP6;
1275 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1276 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1280 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1281 fd, vlsh, addr->sa_family);
1282 errno = EAFNOSUPPORT;
1286 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1289 rv = vls_connect (vlsh, &ep);
1290 if (rv != VPPCOM_OK)
1298 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1301 rv = libc_connect (fd, addr, len);
1305 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1310 getpeername (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1312 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1318 vlsh = ldp_fd_to_vlsh (fd);
1319 if (vlsh != VLS_INVALID_HANDLE)
1322 u8 addr_buf[sizeof (struct in6_addr)];
1323 u32 size = sizeof (ep);
1326 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1327 if (rv != VPPCOM_OK)
1334 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1335 if (rv != VPPCOM_OK)
1344 rv = libc_getpeername (fd, addr, len);
1351 send (int fd, const void *buf, size_t n, int flags)
1353 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1358 if (vlsh != VLS_INVALID_HANDLE)
1360 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1361 if (size < VPPCOM_OK)
1369 size = libc_send (fd, buf, n, flags);
1376 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1378 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1384 vlsh = ldp_fd_to_vlsh (out_fd);
1385 if (vlsh != VLS_INVALID_HANDLE)
1388 ssize_t results = 0;
1389 size_t n_bytes_left = len;
1390 size_t bytes_to_read;
1393 u32 flags, flags_len = sizeof (flags);
1395 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1396 if (PREDICT_FALSE (rv != VPPCOM_OK))
1398 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1399 out_fd, vlsh, rv, vppcom_retval_str (rv));
1401 vec_reset_length (ldpw->io_buffer);
1409 off_t off = lseek (in_fd, *offset, SEEK_SET);
1410 if (PREDICT_FALSE (off == -1))
1416 ASSERT (off == *offset);
1421 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1424 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %ld (%s)!",
1425 out_fd, vlsh, size, vppcom_retval_str (size));
1426 vec_reset_length (ldpw->io_buffer);
1432 bytes_to_read = size;
1433 if (bytes_to_read == 0)
1435 if (flags & O_NONBLOCK)
1444 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1445 vec_validate (ldpw->io_buffer, bytes_to_read);
1446 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1451 vec_reset_length (ldpw->io_buffer);
1458 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1461 if (size == VPPCOM_EAGAIN)
1463 if (flags & O_NONBLOCK)
1474 vec_reset_length (ldpw->io_buffer);
1483 ASSERT (n_bytes_left >= nbytes);
1484 n_bytes_left = n_bytes_left - nbytes;
1486 while (n_bytes_left > 0);
1489 vec_reset_length (ldpw->io_buffer);
1492 off_t off = lseek (in_fd, *offset, SEEK_SET);
1493 if (PREDICT_FALSE (off == -1))
1499 ASSERT (off == *offset);
1500 *offset += results + 1;
1512 size = libc_sendfile (out_fd, in_fd, offset, len);
1520 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1522 return sendfile (out_fd, in_fd, offset, len);
1526 recv (int fd, void *buf, size_t n, int flags)
1533 vlsh = ldp_fd_to_vlsh (fd);
1534 if (vlsh != VLS_INVALID_HANDLE)
1536 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1545 size = libc_recv (fd, buf, n, flags);
1552 __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
1557 return recv (fd, buf, n, flags);
1561 ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n,
1562 vppcom_endpt_tlv_t *app_tlvs, int flags,
1563 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1565 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1566 vppcom_endpt_t *ep = 0;
1569 _ep.app_tlvs = app_tlvs;
1574 switch (addr->sa_family)
1577 ep->is_ip4 = VPPCOM_IS_IP4;
1579 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1580 ep->port = (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1584 ep->is_ip4 = VPPCOM_IS_IP6;
1586 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1588 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1592 return EAFNOSUPPORT;
1596 return vls_sendto (vlsh, (void *) buf, n, flags, ep);
1600 ldp_vls_recvfrom (vls_handle_t vlsh, void *__restrict buf, size_t n, int flags,
1601 __SOCKADDR_ARG _addr, socklen_t *__restrict addr_len)
1603 u8 src_addr[sizeof (struct sockaddr_in6)];
1604 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1612 size = vls_recvfrom (vlsh, buf, n, flags, &ep);
1616 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1622 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1628 sendto (int fd, const void *buf, size_t n, int flags,
1629 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1631 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1637 vlsh = ldp_fd_to_vlsh (fd);
1638 if (vlsh != VLS_INVALID_HANDLE)
1640 size = ldp_vls_sendo (vlsh, buf, n, NULL, flags, addr, addr_len);
1649 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1656 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1657 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1664 vlsh = ldp_fd_to_vlsh (fd);
1665 if (vlsh != VLS_INVALID_HANDLE)
1667 size = ldp_vls_recvfrom (vlsh, buf, n, flags, addr, addr_len);
1676 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1683 ldp_parse_cmsg (vls_handle_t vlsh, const struct msghdr *msg,
1684 vppcom_endpt_tlv_t **app_tlvs)
1686 uint8_t *ad, *at = (uint8_t *) *app_tlvs;
1687 vppcom_endpt_tlv_t *adh;
1688 struct in_pktinfo *pi;
1689 struct cmsghdr *cmsg;
1691 cmsg = CMSG_FIRSTHDR (msg);
1693 while (cmsg != NULL)
1695 switch (cmsg->cmsg_level)
1698 switch (cmsg->cmsg_type)
1701 vec_add2 (at, adh, sizeof (*adh));
1702 adh->data_type = VCL_UDP_SEGMENT;
1703 adh->data_len = sizeof (uint16_t);
1704 vec_add2 (at, ad, sizeof (uint16_t));
1705 *(uint16_t *) ad = *(uint16_t *) CMSG_DATA (cmsg);
1708 LDBG (1, "SOL_UDP cmsg_type %u not supported", cmsg->cmsg_type);
1713 switch (cmsg->cmsg_type)
1716 vec_add2 (at, adh, sizeof (*adh));
1717 adh->data_type = VCL_IP_PKTINFO;
1718 adh->data_len = sizeof (struct in_addr);
1719 vec_add2 (at, ad, sizeof (struct in_addr));
1720 pi = (void *) CMSG_DATA (cmsg);
1721 clib_memcpy_fast (ad, &pi->ipi_spec_dst,
1722 sizeof (struct in_addr));
1725 LDBG (1, "SOL_IP cmsg_type %u not supported", cmsg->cmsg_type);
1730 LDBG (1, "cmsg_level %u not supported", cmsg->cmsg_level);
1733 cmsg = CMSG_NXTHDR ((struct msghdr *) msg, cmsg);
1735 *app_tlvs = (vppcom_endpt_tlv_t *) at;
1740 ldp_make_cmsg (vls_handle_t vlsh, struct msghdr *msg)
1742 u32 optval, optlen = sizeof (optval);
1743 struct cmsghdr *cmsg;
1745 cmsg = CMSG_FIRSTHDR (msg);
1747 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_IP_PKTINFO, (void *) &optval, &optlen))
1753 u8 addr_buf[sizeof (struct in_addr)];
1754 u32 size = sizeof (ep);
1758 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size))
1760 struct in_pktinfo pi = {};
1762 clib_memcpy (&pi.ipi_addr, ep.ip, sizeof (struct in_addr));
1763 cmsg->cmsg_level = SOL_IP;
1764 cmsg->cmsg_type = IP_PKTINFO;
1765 cmsg->cmsg_len = CMSG_LEN (sizeof (pi));
1766 clib_memcpy (CMSG_DATA (cmsg), &pi, sizeof (pi));
1774 sendmsg (int fd, const struct msghdr * msg, int flags)
1781 vlsh = ldp_fd_to_vlsh (fd);
1782 if (vlsh != VLS_INVALID_HANDLE)
1784 vppcom_endpt_tlv_t *app_tlvs = 0;
1785 struct iovec *iov = msg->msg_iov;
1789 ldp_parse_cmsg (vlsh, msg, &app_tlvs);
1791 for (i = 0; i < msg->msg_iovlen; ++i)
1793 rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, app_tlvs,
1794 flags, msg->msg_name, msg->msg_namelen);
1800 if (rv < iov[i].iov_len)
1805 vec_free (app_tlvs);
1807 if (rv < 0 && total == 0)
1817 size = libc_sendmsg (fd, msg, flags);
1825 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1828 const char *func_str;
1829 u32 sh = ldp_fd_to_vlsh (fd);
1833 if (sh != VLS_INVALID_HANDLE)
1835 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1841 func_str = "libc_sendmmsg";
1844 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1845 "vmessages %p, vlen %u, flags 0x%x",
1846 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1848 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1855 int errno_val = errno;
1857 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1858 "rv %d, errno = %d", getpid (), fd, fd,
1859 func_str, size, errno_val);
1863 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1864 getpid (), fd, fd, size, size);
1871 recvmsg (int fd, struct msghdr * msg, int flags)
1878 vlsh = ldp_fd_to_vlsh (fd);
1879 if (vlsh != VLS_INVALID_HANDLE)
1881 struct iovec *iov = msg->msg_iov;
1882 ssize_t max_deq, total = 0;
1885 max_deq = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
1889 for (i = 0; i < msg->msg_iovlen; i++)
1891 rv = ldp_vls_recvfrom (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
1892 (i == 0 ? msg->msg_name : NULL),
1893 (i == 0 ? &msg->msg_namelen : NULL));
1899 if (rv < iov[i].iov_len)
1902 if (total >= max_deq)
1906 if (rv < 0 && total == 0)
1913 if (msg->msg_controllen)
1914 ldp_make_cmsg (vlsh, msg);
1920 size = libc_recvmsg (fd, msg, flags);
1928 recvmmsg (int fd, struct mmsghdr *vmessages,
1929 unsigned int vlen, int flags, struct timespec *tmo)
1931 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1936 sh = ldp_fd_to_vlsh (fd);
1938 if (sh != VLS_INVALID_HANDLE)
1945 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
1946 clib_time_init (&ldpw->clib_time);
1949 time_out = (f64) tmo->tv_sec + (f64) tmo->tv_nsec / (f64) 1e9;
1950 time_out += clib_time_now (&ldpw->clib_time);
1954 time_out = (f64) ~0;
1957 while (nvecs < vlen)
1959 mh = &vmessages[nvecs];
1960 rv = recvmsg (fd, &mh->msg_hdr, flags);
1968 if (!time_out || clib_time_now (&ldpw->clib_time) >= time_out)
1974 return nvecs > 0 ? nvecs : rv;
1978 return libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1984 getsockopt (int fd, int level, int optname,
1985 void *__restrict optval, socklen_t * __restrict optlen)
1992 vlsh = ldp_fd_to_vlsh (fd);
1993 if (vlsh != VLS_INVALID_HANDLE)
2003 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
2007 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
2011 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
2015 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
2019 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
2021 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
2022 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
2023 memset (optval, 0, *optlen);
2029 case TCP_CONGESTION:
2030 *optlen = strlen ("cubic");
2031 strncpy (optval, "cubic", *optlen + 1);
2035 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
2036 "optname %d unsupported!", fd, vlsh, optname);
2044 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
2047 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
2048 "optname %d unsupported!", fd, vlsh, optname);
2056 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
2059 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
2062 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
2063 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
2066 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
2070 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
2074 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
2077 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEPORT, optval, optlen);
2080 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
2083 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_DOMAIN, optval, optlen);
2086 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
2088 case SO_BINDTODEVICE:
2092 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
2093 "optname %d unsupported!", fd, vlsh, optname);
2101 if (rv != VPPCOM_OK)
2109 rv = libc_getsockopt (fd, level, optname, optval, optlen);
2116 setsockopt (int fd, int level, int optname,
2117 const void *optval, socklen_t optlen)
2124 vlsh = ldp_fd_to_vlsh (fd);
2125 if (vlsh != VLS_INVALID_HANDLE)
2135 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
2136 (void *) optval, &optlen);
2139 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
2140 (void *) optval, &optlen);
2143 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
2144 (void *) optval, &optlen);
2147 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
2148 (void *) optval, &optlen);
2150 case TCP_CONGESTION:
2156 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
2157 "optname %d unsupported!", fd, vlsh, optname);
2165 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
2166 (void *) optval, &optlen);
2169 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
2170 "optname %d unsupported!", fd, vlsh, optname);
2178 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
2179 (void *) optval, &optlen);
2182 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
2183 (void *) optval, &optlen);
2186 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEPORT, (void *) optval,
2190 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
2191 (void *) optval, &optlen);
2197 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
2198 "optname %d unsupported!", fd, vlsh, optname);
2206 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_IP_PKTINFO, (void *) optval,
2211 "ERROR: fd %d: setsockopt SOL_IP: vlsh %u optname %d"
2221 if (rv != VPPCOM_OK)
2229 rv = libc_setsockopt (fd, level, optname, optval, optlen);
2236 listen (int fd, int n)
2243 vlsh = ldp_fd_to_vlsh (fd);
2244 if (vlsh != VLS_INVALID_HANDLE)
2246 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2248 rv = vls_listen (vlsh, n);
2249 if (rv != VPPCOM_OK)
2257 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2258 rv = libc_listen (fd, n);
2261 LDBG (1, "fd %d: returning %d", fd, rv);
2266 ldp_accept4 (int listen_fd, __SOCKADDR_ARG _addr,
2267 socklen_t *__restrict addr_len, int flags)
2269 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
2270 vls_handle_t listen_vlsh, accept_vlsh;
2275 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2276 if (listen_vlsh != VLS_INVALID_HANDLE)
2279 u8 src_addr[sizeof (struct sockaddr_in6)];
2280 memset (&ep, 0, sizeof (ep));
2283 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2284 " ep %p, flags 0x%x", listen_fd, listen_vlsh, &ep, flags);
2286 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2287 if (accept_vlsh < 0)
2289 errno = -accept_vlsh;
2294 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2295 if (rv != VPPCOM_OK)
2297 (void) vls_close (accept_vlsh);
2303 rv = ldp_vlsh_to_fd (accept_vlsh);
2309 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2310 " flags 0x%x", listen_fd, addr, addr_len, flags);
2312 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2315 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2321 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2324 return ldp_accept4 (fd, addr, addr_len, flags);
2328 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2330 return ldp_accept4 (fd, addr, addr_len, 0);
2334 shutdown (int fd, int how)
2341 vlsh = ldp_fd_to_vlsh (fd);
2342 if (vlsh != VLS_INVALID_HANDLE)
2344 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2345 rv = vls_shutdown (vlsh, how);
2349 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2350 rv = libc_shutdown (fd, how);
2357 epoll_create1 (int flags)
2359 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2365 if (ldp->vcl_needs_real_epoll || vls_use_real_epoll ())
2367 /* Make sure workers have been allocated */
2370 ldp_alloc_workers ();
2371 ldpw = ldp_worker_get_current ();
2373 rv = libc_epoll_create1 (flags);
2374 ldp->vcl_needs_real_epoll = 0;
2375 ldpw->vcl_mq_epfd = rv;
2376 LDBG (0, "created vcl epfd %u", rv);
2380 vlsh = vls_epoll_create ();
2381 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2388 rv = ldp_vlsh_to_fd (vlsh);
2390 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2395 epoll_create (int size)
2397 return epoll_create1 (0);
2401 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2403 vls_handle_t vep_vlsh, vlsh;
2408 vep_vlsh = ldp_fd_to_vlsh (epfd);
2409 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2411 /* The LDP epoll_create1 always creates VCL epfd's.
2412 * The app should never have a kernel base epoll fd unless it
2413 * was acquired outside of the LD_PRELOAD process context.
2414 * In any case, if we get one, punt it to libc_epoll_ctl.
2417 "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2419 epfd, op, fd, event ? event->events : 0);
2421 rv = libc_epoll_ctl (epfd, op, fd, event);
2425 vlsh = ldp_fd_to_vlsh (fd);
2427 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2430 if (vlsh != VLS_INVALID_HANDLE)
2433 "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2435 epfd, vep_vlsh, op, vlsh, event ? event->events : 0);
2437 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2438 if (rv != VPPCOM_OK)
2447 u32 size = sizeof (epfd);
2449 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2452 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2453 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2455 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2462 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2471 else if (PREDICT_FALSE (libc_epfd < 0))
2478 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2479 " event %p", epfd, libc_epfd, op, fd, event);
2481 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2489 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2490 int timeout, const sigset_t * sigmask)
2492 ldp_worker_ctx_t *ldpw;
2493 double time_to_wait = (double) 0, max_time;
2494 int libc_epfd, rv = 0;
2495 vls_handle_t ep_vlsh;
2499 if (PREDICT_FALSE (!events || (timeout < -1)))
2505 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2506 vls_register_vcl_worker ();
2508 ldpw = ldp_worker_get_current ();
2509 if (epfd == ldpw->vcl_mq_epfd)
2510 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2512 ep_vlsh = ldp_fd_to_vlsh (epfd);
2513 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2515 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2520 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2521 clib_time_init (&ldpw->clib_time);
2522 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2523 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2525 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2526 if (PREDICT_FALSE (libc_epfd < 0))
2533 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2534 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2535 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2538 if (!ldpw->epoll_wait_vcl)
2540 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2543 ldpw->epoll_wait_vcl = 1;
2554 ldpw->epoll_wait_vcl = 0;
2558 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2563 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2570 ldp_epoll_pwait_eventfd (int epfd, struct epoll_event *events,
2571 int maxevents, int timeout, const sigset_t * sigmask)
2573 int libc_epfd, rv = 0, num_ev, libc_num_ev, vcl_wups = 0;
2574 struct epoll_event *libc_evts;
2575 ldp_worker_ctx_t *ldpw;
2576 vls_handle_t ep_vlsh;
2580 if (PREDICT_FALSE (!events || (timeout < -1)))
2586 /* Make sure the vcl worker is valid. Could be that epoll fd was created on
2587 * one thread but it is now used on another */
2588 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2589 vls_register_vcl_worker ();
2591 ldpw = ldp_worker_get_current ();
2592 if (epfd == ldpw->vcl_mq_epfd)
2593 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2595 ep_vlsh = ldp_fd_to_vlsh (epfd);
2596 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2598 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2603 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2604 if (PREDICT_FALSE (!libc_epfd))
2606 u32 size = sizeof (epfd);
2608 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2609 "EPOLL_CLOEXEC", epfd, ep_vlsh);
2610 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2617 rv = vls_attr (ep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd, &size);
2625 if (PREDICT_FALSE (libc_epfd <= 0))
2632 if (PREDICT_FALSE (!ldpw->mq_epfd_added))
2634 struct epoll_event e = { 0 };
2636 e.data.fd = ldpw->vcl_mq_epfd;
2637 if (libc_epoll_ctl (libc_epfd, EPOLL_CTL_ADD, ldpw->vcl_mq_epfd, &e) <
2640 LDBG (0, "epfd %d, add libc mq epoll fd %d to libc epoll fd %d",
2641 epfd, ldpw->vcl_mq_epfd, libc_epfd);
2645 ldpw->mq_epfd_added = 1;
2648 /* Request to only drain unhandled to prevent libc_epoll_wait starved */
2649 rv = vls_epoll_wait (ep_vlsh, events, maxevents, -2);
2653 if (rv >= maxevents)
2656 else if (PREDICT_FALSE (rv < 0))
2665 libc_evts = &events[rv];
2667 libc_epoll_pwait (libc_epfd, libc_evts, maxevents - rv, timeout, sigmask);
2668 if (libc_num_ev <= 0)
2670 rv = rv >= 0 ? rv : -1;
2674 for (int i = 0; i < libc_num_ev; i++)
2676 if (libc_evts[i].data.fd == ldpw->vcl_mq_epfd)
2678 /* We should remove mq epoll fd from events. */
2680 if (i != libc_num_ev)
2682 libc_evts[i].events = libc_evts[libc_num_ev].events;
2683 libc_evts[i].data.u64 = libc_evts[libc_num_ev].data.u64;
2685 num_ev = vls_epoll_wait (ep_vlsh, &libc_evts[libc_num_ev],
2686 maxevents - libc_num_ev, 0);
2687 if (PREDICT_TRUE (num_ev > 0))
2689 /* Woken up by vcl but no events generated. Accept it once */
2690 if (rv == 0 && libc_num_ev == 0 && timeout && vcl_wups++ < 1)
2703 epoll_pwait (int epfd, struct epoll_event *events,
2704 int maxevents, int timeout, const sigset_t * sigmask)
2706 if (vls_use_eventfd ())
2707 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout,
2710 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2714 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2716 if (vls_use_eventfd ())
2717 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout, NULL);
2719 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2723 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2725 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2726 int rv, i, n_revents = 0;
2731 LDBG (3, "fds %p, nfds %ld, timeout %d", fds, nfds, timeout);
2733 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2734 clib_time_init (&ldpw->clib_time);
2736 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2737 max_time += clib_time_now (&ldpw->clib_time);
2739 for (i = 0; i < nfds; i++)
2744 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2745 if (vlsh != VLS_INVALID_HANDLE)
2747 fds[i].fd = -fds[i].fd;
2748 vec_add2 (ldpw->vcl_poll, vp, 1);
2750 vp->sh = vlsh_to_sh (vlsh);
2751 vp->events = fds[i].events;
2752 #ifdef __USE_XOPEN2K
2753 if (fds[i].events & POLLRDNORM)
2754 vp->events |= POLLIN;
2755 if (fds[i].events & POLLWRNORM)
2756 vp->events |= POLLOUT;
2758 vp->revents = fds[i].revents;
2762 vec_add1 (ldpw->libc_poll, fds[i]);
2763 vec_add1 (ldpw->libc_poll_idxs, i);
2769 if (vec_len (ldpw->vcl_poll))
2771 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2782 if (vec_len (ldpw->libc_poll))
2784 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2797 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2801 vec_foreach (vp, ldpw->vcl_poll)
2803 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2804 fds[vp->fds_ndx].revents = vp->revents;
2805 #ifdef __USE_XOPEN2K
2806 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2807 (fds[vp->fds_ndx].events & POLLRDNORM))
2808 fds[vp->fds_ndx].revents |= POLLRDNORM;
2809 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2810 (fds[vp->fds_ndx].events & POLLWRNORM))
2811 fds[vp->fds_ndx].revents |= POLLWRNORM;
2814 vec_reset_length (ldpw->vcl_poll);
2816 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2818 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2820 vec_reset_length (ldpw->libc_poll_idxs);
2821 vec_reset_length (ldpw->libc_poll);
2828 ppoll (struct pollfd *fds, nfds_t nfds,
2829 const struct timespec *timeout, const sigset_t * sigmask)
2833 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2841 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2843 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2846 * This function is called when the library is loaded
2849 ldp_constructor (void)
2851 swrap_constructor ();
2852 if (ldp_init () != 0)
2854 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2858 else if (LDP_DEBUG > 0)
2859 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2863 * This function is called when the library is unloaded
2866 ldp_destructor (void)
2869 swrap_destructor ();
2874 /* Don't use clib_warning() here because that calls writev()
2875 * which will call ldp_init().
2878 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2879 __func__, __LINE__, getpid ());
2884 * fd.io coding-style-patch-verification: ON
2887 * eval: (c-set-style "gnu")