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 char *env_var_str = getenv (LDP_ENV_DEBUG);
204 if (sscanf (env_var_str, "%u", &tmp) != 1)
205 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
206 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
211 LDBG (0, "configured LDP debug level (%u) from env var "
212 LDP_ENV_DEBUG "!", ldp->debug);
216 env_var_str = getenv (LDP_ENV_APP_NAME);
219 ldp_set_app_name (env_var_str);
220 LDBG (0, "configured LDP app name (%s) from the env var "
221 LDP_ENV_APP_NAME "!", ldp->app_name);
224 env_var_str = getenv (LDP_ENV_SID_BIT);
228 if (sscanf (env_var_str, "%u", &sb) != 1)
230 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
231 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
232 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
234 else if (sb < LDP_SID_BIT_MIN)
236 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
237 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
239 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
240 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
241 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
242 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
244 else if (sb > LDP_SID_BIT_MAX)
246 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
247 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
249 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
250 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
251 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
252 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
256 ldp->vlsh_bit_val = (1 << sb);
257 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
259 LDBG (0, "configured LDP sid bit (%u) from "
260 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
261 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
264 /* Make sure there are enough bits in the fd set for vcl sessions */
265 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
267 /* Only valid for select/pselect, so just WARNING and not exit */
269 "WARNING: LDP vlsh bit value %d > FD_SETSIZE/2 %d, "
270 "select/pselect not supported now!",
271 ldp->vlsh_bit_val, FD_SETSIZE / 2);
274 env_var_str = getenv (LDP_ENV_TLS_TRANS);
277 ldp->transparent_tls = 1;
284 ldp_worker_ctx_t *ldpw;
291 ldp->vcl_needs_real_epoll = 1;
292 rv = vls_app_create (ldp_get_app_name ());
295 ldp->vcl_needs_real_epoll = 0;
296 if (rv == VPPCOM_EEXIST)
299 "\nERROR: ldp_init: vppcom_app_create()"
300 " failed! rv = %d (%s)\n",
301 rv, vppcom_retval_str (rv));
305 ldp->vcl_needs_real_epoll = 0;
306 ldp_alloc_workers ();
307 ldpw = ldp_worker_get_current ();
309 pool_foreach (ldpw, ldp->workers) {
310 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
313 LDBG (0, "LDP initialization: done!");
318 #define ldp_init_check() \
319 if (PREDICT_FALSE (!ldp->init)) \
321 if ((errno = -ldp_init ())) \
333 vlsh = ldp_fd_to_vlsh (fd);
334 if (vlsh != VLS_INVALID_HANDLE)
336 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
339 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
340 u32 size = sizeof (epfd);
342 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
345 ldpw->mq_epfd_added = 0;
348 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
350 else if (PREDICT_FALSE (epfd < 0))
357 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
359 rv = vls_close (vlsh);
368 LDBG (0, "fd %d: calling libc_close", fd);
369 rv = libc_close (fd);
377 read (int fd, void *buf, size_t nbytes)
384 vlsh = ldp_fd_to_vlsh (fd);
385 if (vlsh != VLS_INVALID_HANDLE)
387 size = vls_read (vlsh, buf, nbytes);
396 size = libc_read (fd, buf, nbytes);
403 readv (int fd, const struct iovec * iov, int iovcnt)
405 int rv = 0, i, total = 0;
411 vlsh = ldp_fd_to_vlsh (fd);
412 if (vlsh != VLS_INVALID_HANDLE)
414 for (i = 0; i < iovcnt; ++i)
416 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
422 if (rv < iov[i].iov_len)
426 if (rv < 0 && total == 0)
436 size = libc_readv (fd, iov, iovcnt);
443 write (int fd, const void *buf, size_t nbytes)
450 vlsh = ldp_fd_to_vlsh (fd);
451 if (vlsh != VLS_INVALID_HANDLE)
453 size = vls_write_msg (vlsh, (void *) buf, nbytes);
462 size = libc_write (fd, buf, nbytes);
469 writev (int fd, const struct iovec * iov, int iovcnt)
471 ssize_t size = 0, total = 0;
477 vlsh = ldp_fd_to_vlsh (fd);
478 if (vlsh != VLS_INVALID_HANDLE)
480 for (i = 0; i < iovcnt; ++i)
482 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
488 if (rv < iov[i].iov_len)
493 if (rv < 0 && total == 0)
503 size = libc_writev (fd, iov, iovcnt);
510 fcntl_internal (int fd, int cmd, va_list ap)
515 vlsh = ldp_fd_to_vlsh (fd);
516 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
517 if (vlsh != VLS_INVALID_HANDLE)
519 int flags = va_arg (ap, int);
522 size = sizeof (flags);
527 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
531 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
536 /* TODO handle this */
537 LDBG (0, "F_SETFD ignored flags %u", flags);
553 rv = libc_vfcntl64 (fd, cmd, ap);
555 rv = libc_vfcntl (fd, cmd, ap);
563 fcntl (int fd, int cmd, ...)
571 rv = fcntl_internal (fd, cmd, ap);
578 fcntl64 (int fd, int cmd, ...)
586 rv = fcntl_internal (fd, cmd, ap);
592 ioctl (int fd, unsigned long int cmd, ...)
602 vlsh = ldp_fd_to_vlsh (fd);
603 if (vlsh != VLS_INVALID_HANDLE)
608 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
613 u32 flags = *(va_arg (ap, int *)) ? O_NONBLOCK : 0;
614 u32 size = sizeof (flags);
616 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
617 * non-blocking, the flags should be read here and merged
620 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
636 rv = libc_vioctl (fd, cmd, ap);
644 ldp_select_init_maps (fd_set * __restrict original,
645 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
646 clib_bitmap_t ** vclb, int nfds, u32 minbits,
647 u32 n_bytes, uword * si_bits, uword * libc_bits)
649 uword si_bits_set, libc_bits_set;
653 clib_bitmap_validate (*vclb, minbits);
654 clib_bitmap_validate (*libcb, minbits);
655 clib_bitmap_validate (*resultb, minbits);
656 clib_memcpy_fast (*resultb, original, n_bytes);
657 memset (original, 0, n_bytes);
660 clib_bitmap_foreach (fd, *resultb) {
663 vlsh = ldp_fd_to_vlsh (fd);
664 if (vlsh == VLS_INVALID_HANDLE)
665 clib_bitmap_set_no_check (*libcb, fd, 1);
667 *vclb = clib_bitmap_set (*vclb, vlsh_to_session_index (vlsh), 1);
671 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
672 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
673 clib_bitmap_validate (*resultb, *si_bits);
675 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
676 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
680 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
690 clib_bitmap_foreach (si, vclb) {
691 vlsh = vls_session_index_to_vlsh (si);
692 ASSERT (vlsh != VLS_INVALID_HANDLE);
693 fd = ldp_vlsh_to_fd (vlsh);
694 if (PREDICT_FALSE (fd < 0))
707 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
715 clib_bitmap_foreach (fd, result)
716 FD_SET ((int)fd, libcb);
721 ldp_pselect (int nfds, fd_set * __restrict readfds,
722 fd_set * __restrict writefds,
723 fd_set * __restrict exceptfds,
724 const struct timespec *__restrict timeout,
725 const __sigset_t * __restrict sigmask)
727 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
728 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
729 struct timespec libc_tspec = { 0 };
730 f64 time_out, vcl_timeout = 0;
731 uword si_bits, libc_bits;
732 int rv, bits_set = 0;
740 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
741 clib_time_init (&ldpw->clib_time);
745 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
746 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
748 time_out += clib_time_now (&ldpw->clib_time);
750 /* select as fine grained sleep */
753 while (clib_time_now (&ldpw->clib_time) < time_out)
766 if (nfds <= ldp->vlsh_bit_val)
768 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
773 si_bits = libc_bits = 0;
774 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
777 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
778 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
779 &si_bits, &libc_bits);
781 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
782 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
783 minbits, n_bytes, &si_bits, &libc_bits);
785 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
786 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
787 minbits, n_bytes, &si_bits, &libc_bits);
789 if (PREDICT_FALSE (!si_bits && !libc_bits))
797 libc_tspec = timeout ? *timeout : libc_tspec;
804 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
805 vec_len (ldpw->si_rd_bitmap) *
806 sizeof (clib_bitmap_t));
808 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
809 vec_len (ldpw->si_wr_bitmap) *
810 sizeof (clib_bitmap_t));
812 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
813 vec_len (ldpw->si_ex_bitmap) *
814 sizeof (clib_bitmap_t));
816 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
817 writefds ? ldpw->wr_bitmap : NULL,
818 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
827 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
833 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
839 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
850 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
851 vec_len (ldpw->libc_rd_bitmap) *
852 sizeof (clib_bitmap_t));
854 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
855 vec_len (ldpw->libc_wr_bitmap) *
856 sizeof (clib_bitmap_t));
858 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
859 vec_len (ldpw->libc_ex_bitmap) *
860 sizeof (clib_bitmap_t));
862 rv = libc_pselect (libc_bits,
863 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
864 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
865 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
866 &libc_tspec, sigmask);
869 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
870 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
871 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
882 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
886 /* TBD: set timeout to amount of time left */
887 clib_bitmap_zero (ldpw->rd_bitmap);
888 clib_bitmap_zero (ldpw->si_rd_bitmap);
889 clib_bitmap_zero (ldpw->libc_rd_bitmap);
890 clib_bitmap_zero (ldpw->wr_bitmap);
891 clib_bitmap_zero (ldpw->si_wr_bitmap);
892 clib_bitmap_zero (ldpw->libc_wr_bitmap);
893 clib_bitmap_zero (ldpw->ex_bitmap);
894 clib_bitmap_zero (ldpw->si_ex_bitmap);
895 clib_bitmap_zero (ldpw->libc_ex_bitmap);
901 select (int nfds, fd_set * __restrict readfds,
902 fd_set * __restrict writefds,
903 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
905 struct timespec tspec;
909 tspec.tv_sec = timeout->tv_sec;
910 tspec.tv_nsec = timeout->tv_usec * 1000;
912 return ldp_pselect (nfds, readfds, writefds, exceptfds,
913 timeout ? &tspec : NULL, NULL);
918 pselect (int nfds, fd_set * __restrict readfds,
919 fd_set * __restrict writefds,
920 fd_set * __restrict exceptfds,
921 const struct timespec *__restrict timeout,
922 const __sigset_t * __restrict sigmask)
924 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
928 /* If transparent TLS mode is turned on, then ldp will load key and cert.
931 load_cert_key_pair (void)
933 char *cert_str = getenv (LDP_ENV_TLS_CERT);
934 char *key_str = getenv (LDP_ENV_TLS_KEY);
935 char cert_buf[4096], key_buf[4096];
936 int cert_size, key_size;
937 vppcom_cert_key_pair_t crypto;
941 if (!cert_str || !key_str)
943 LDBG (0, "ERROR: failed to read LDP environment %s\n",
948 fp = fopen (cert_str, "r");
951 LDBG (0, "ERROR: failed to open cert file %s \n", cert_str);
954 cert_size = fread (cert_buf, sizeof (char), sizeof (cert_buf), fp);
957 fp = fopen (key_str, "r");
960 LDBG (0, "ERROR: failed to open key file %s \n", key_str);
963 key_size = fread (key_buf, sizeof (char), sizeof (key_buf), fp);
966 crypto.cert = cert_buf;
967 crypto.key = key_buf;
968 crypto.cert_len = cert_size;
969 crypto.key_len = key_size;
970 ckp_index = vppcom_add_cert_key_pair (&crypto);
973 LDBG (0, "ERROR: failed to add cert key pair\n");
977 ldp->ckpair_index = ckp_index;
983 assign_cert_key_pair (vls_handle_t vlsh)
987 if (ldp->ckpair_index == ~0 && load_cert_key_pair () < 0)
990 ckp_len = sizeof (ldp->ckpair_index);
991 return vls_attr (vlsh, VPPCOM_ATTR_SET_CKPAIR, &ldp->ckpair_index, &ckp_len);
995 socket (int domain, int type, int protocol)
997 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
998 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
1003 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1004 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1007 if (ldp->transparent_tls)
1009 proto = VPPCOM_PROTO_TLS;
1012 proto = ((sock_type == SOCK_DGRAM) ?
1013 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
1015 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
1016 proto, vppcom_proto_str (proto), is_nonblocking);
1018 vlsh = vls_create (proto, is_nonblocking);
1026 if (ldp->transparent_tls)
1028 if (assign_cert_key_pair (vlsh) < 0)
1031 rv = ldp_vlsh_to_fd (vlsh);
1036 LDBG (0, "calling libc_socket");
1037 rv = libc_socket (domain, type, protocol);
1044 * Create two new sockets, of type TYPE in domain DOMAIN and using
1045 * protocol PROTOCOL, which are connected to each other, and put file
1046 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
1047 * one will be chosen automatically.
1048 * Returns 0 on success, -1 for errors.
1051 socketpair (int domain, int type, int protocol, int fds[2])
1053 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1057 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1058 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1060 LDBG (0, "LDP-TBD");
1066 LDBG (1, "calling libc_socketpair");
1067 rv = libc_socketpair (domain, type, protocol, fds);
1074 bind (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1076 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1082 vlsh = ldp_fd_to_vlsh (fd);
1083 if (vlsh != VLS_INVALID_HANDLE)
1087 switch (addr->sa_family)
1090 if (len != sizeof (struct sockaddr_in))
1092 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1098 ep.is_ip4 = VPPCOM_IS_IP4;
1099 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1100 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1104 if (len != sizeof (struct sockaddr_in6))
1106 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1112 ep.is_ip4 = VPPCOM_IS_IP6;
1113 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1114 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1118 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1119 fd, vlsh, addr->sa_family);
1120 errno = EAFNOSUPPORT;
1124 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1127 rv = vls_bind (vlsh, &ep);
1128 if (rv != VPPCOM_OK)
1136 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1137 rv = libc_bind (fd, addr, len);
1141 LDBG (1, "fd %d: returning %d", fd, rv);
1147 ldp_copy_ep_to_sockaddr (struct sockaddr *addr, socklen_t *__restrict len,
1150 int rv = 0, sa_len, copy_len;
1154 if (addr && len && ep)
1156 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1157 switch (addr->sa_family)
1160 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1161 if (*len > sizeof (struct sockaddr_in))
1162 *len = sizeof (struct sockaddr_in);
1163 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1164 copy_len = *len - sa_len;
1166 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1171 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1172 if (*len > sizeof (struct sockaddr_in6))
1173 *len = sizeof (struct sockaddr_in6);
1174 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1175 copy_len = *len - sa_len;
1177 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1178 __in6_u.__u6_addr8, ep->ip, copy_len);
1191 getsockname (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1193 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1199 vlsh = ldp_fd_to_vlsh (fd);
1200 if (vlsh != VLS_INVALID_HANDLE)
1203 u8 addr_buf[sizeof (struct in6_addr)];
1204 u32 size = sizeof (ep);
1208 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1209 if (rv != VPPCOM_OK)
1216 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1217 if (rv != VPPCOM_OK)
1226 rv = libc_getsockname (fd, _addr, len);
1233 connect (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1235 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1243 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1249 vlsh = ldp_fd_to_vlsh (fd);
1250 if (vlsh != VLS_INVALID_HANDLE)
1254 switch (addr->sa_family)
1257 if (len != sizeof (struct sockaddr_in))
1259 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1265 ep.is_ip4 = VPPCOM_IS_IP4;
1266 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1267 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1271 if (len != sizeof (struct sockaddr_in6))
1273 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1279 ep.is_ip4 = VPPCOM_IS_IP6;
1280 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1281 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1285 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1286 fd, vlsh, addr->sa_family);
1287 errno = EAFNOSUPPORT;
1291 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1294 rv = vls_connect (vlsh, &ep);
1295 if (rv != VPPCOM_OK)
1303 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1306 rv = libc_connect (fd, addr, len);
1310 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1315 getpeername (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1317 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1323 vlsh = ldp_fd_to_vlsh (fd);
1324 if (vlsh != VLS_INVALID_HANDLE)
1327 u8 addr_buf[sizeof (struct in6_addr)];
1328 u32 size = sizeof (ep);
1331 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1332 if (rv != VPPCOM_OK)
1339 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1340 if (rv != VPPCOM_OK)
1349 rv = libc_getpeername (fd, addr, len);
1356 send (int fd, const void *buf, size_t n, int flags)
1358 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1363 if (vlsh != VLS_INVALID_HANDLE)
1365 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1366 if (size < VPPCOM_OK)
1374 size = libc_send (fd, buf, n, flags);
1381 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1383 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1389 vlsh = ldp_fd_to_vlsh (out_fd);
1390 if (vlsh != VLS_INVALID_HANDLE)
1393 ssize_t results = 0;
1394 size_t n_bytes_left = len;
1395 size_t bytes_to_read;
1398 u32 flags, flags_len = sizeof (flags);
1400 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1401 if (PREDICT_FALSE (rv != VPPCOM_OK))
1403 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1404 out_fd, vlsh, rv, vppcom_retval_str (rv));
1406 vec_reset_length (ldpw->io_buffer);
1414 off_t off = lseek (in_fd, *offset, SEEK_SET);
1415 if (PREDICT_FALSE (off == -1))
1421 ASSERT (off == *offset);
1426 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1429 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %ld (%s)!",
1430 out_fd, vlsh, size, vppcom_retval_str (size));
1431 vec_reset_length (ldpw->io_buffer);
1437 bytes_to_read = size;
1438 if (bytes_to_read == 0)
1440 if (flags & O_NONBLOCK)
1449 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1450 vec_validate (ldpw->io_buffer, bytes_to_read);
1451 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1456 vec_reset_length (ldpw->io_buffer);
1463 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1466 if (size == VPPCOM_EAGAIN)
1468 if (flags & O_NONBLOCK)
1479 vec_reset_length (ldpw->io_buffer);
1488 ASSERT (n_bytes_left >= nbytes);
1489 n_bytes_left = n_bytes_left - nbytes;
1491 while (n_bytes_left > 0);
1494 vec_reset_length (ldpw->io_buffer);
1497 off_t off = lseek (in_fd, *offset, SEEK_SET);
1498 if (PREDICT_FALSE (off == -1))
1504 ASSERT (off == *offset);
1505 *offset += results + 1;
1517 size = libc_sendfile (out_fd, in_fd, offset, len);
1525 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1527 return sendfile (out_fd, in_fd, offset, len);
1531 recv (int fd, void *buf, size_t n, int flags)
1538 vlsh = ldp_fd_to_vlsh (fd);
1539 if (vlsh != VLS_INVALID_HANDLE)
1541 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1550 size = libc_recv (fd, buf, n, flags);
1557 __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
1562 return recv (fd, buf, n, flags);
1566 ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n,
1567 vppcom_endpt_tlv_t *app_tlvs, int flags,
1568 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1570 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1571 vppcom_endpt_t *ep = 0;
1574 _ep.app_tlvs = app_tlvs;
1579 switch (addr->sa_family)
1582 ep->is_ip4 = VPPCOM_IS_IP4;
1584 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1585 ep->port = (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1589 ep->is_ip4 = VPPCOM_IS_IP6;
1591 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1593 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1597 return EAFNOSUPPORT;
1601 return vls_sendto (vlsh, (void *) buf, n, flags, ep);
1605 ldp_vls_recvfrom (vls_handle_t vlsh, void *__restrict buf, size_t n, int flags,
1606 __SOCKADDR_ARG _addr, socklen_t *__restrict addr_len)
1608 u8 src_addr[sizeof (struct sockaddr_in6)];
1609 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1617 size = vls_recvfrom (vlsh, buf, n, flags, &ep);
1621 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1627 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1633 sendto (int fd, const void *buf, size_t n, int flags,
1634 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1636 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1642 vlsh = ldp_fd_to_vlsh (fd);
1643 if (vlsh != VLS_INVALID_HANDLE)
1645 size = ldp_vls_sendo (vlsh, buf, n, NULL, flags, addr, addr_len);
1654 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1661 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1662 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1669 vlsh = ldp_fd_to_vlsh (fd);
1670 if (vlsh != VLS_INVALID_HANDLE)
1672 size = ldp_vls_recvfrom (vlsh, buf, n, flags, addr, addr_len);
1681 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1688 ldp_parse_cmsg (vls_handle_t vlsh, const struct msghdr *msg,
1689 vppcom_endpt_tlv_t **app_tlvs)
1691 uint8_t *ad, *at = (uint8_t *) *app_tlvs;
1692 vppcom_endpt_tlv_t *adh;
1693 struct in_pktinfo *pi;
1694 struct cmsghdr *cmsg;
1696 cmsg = CMSG_FIRSTHDR (msg);
1698 while (cmsg != NULL)
1700 switch (cmsg->cmsg_level)
1703 switch (cmsg->cmsg_type)
1706 vec_add2 (at, adh, sizeof (*adh));
1707 adh->data_type = VCL_UDP_SEGMENT;
1708 adh->data_len = sizeof (uint16_t);
1709 vec_add2 (at, ad, sizeof (uint16_t));
1710 *(uint16_t *) ad = *(uint16_t *) CMSG_DATA (cmsg);
1713 LDBG (1, "SOL_UDP cmsg_type %u not supported", cmsg->cmsg_type);
1718 switch (cmsg->cmsg_type)
1721 vec_add2 (at, adh, sizeof (*adh));
1722 adh->data_type = VCL_IP_PKTINFO;
1723 adh->data_len = sizeof (struct in_addr);
1724 vec_add2 (at, ad, sizeof (struct in_addr));
1725 pi = (void *) CMSG_DATA (cmsg);
1726 clib_memcpy_fast (ad, &pi->ipi_spec_dst,
1727 sizeof (struct in_addr));
1730 LDBG (1, "SOL_IP cmsg_type %u not supported", cmsg->cmsg_type);
1735 LDBG (1, "cmsg_level %u not supported", cmsg->cmsg_level);
1738 cmsg = CMSG_NXTHDR ((struct msghdr *) msg, cmsg);
1740 *app_tlvs = (vppcom_endpt_tlv_t *) at;
1745 ldp_make_cmsg (vls_handle_t vlsh, struct msghdr *msg)
1747 u32 optval, optlen = sizeof (optval);
1748 struct cmsghdr *cmsg;
1750 cmsg = CMSG_FIRSTHDR (msg);
1752 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_IP_PKTINFO, (void *) &optval, &optlen))
1758 u8 addr_buf[sizeof (struct in_addr)];
1759 u32 size = sizeof (ep);
1763 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size))
1765 struct in_pktinfo pi = {};
1767 clib_memcpy (&pi.ipi_addr, ep.ip, sizeof (struct in_addr));
1768 cmsg->cmsg_level = SOL_IP;
1769 cmsg->cmsg_type = IP_PKTINFO;
1770 cmsg->cmsg_len = CMSG_LEN (sizeof (pi));
1771 clib_memcpy (CMSG_DATA (cmsg), &pi, sizeof (pi));
1779 sendmsg (int fd, const struct msghdr * msg, int flags)
1786 vlsh = ldp_fd_to_vlsh (fd);
1787 if (vlsh != VLS_INVALID_HANDLE)
1789 vppcom_endpt_tlv_t *app_tlvs = 0;
1790 struct iovec *iov = msg->msg_iov;
1794 ldp_parse_cmsg (vlsh, msg, &app_tlvs);
1796 for (i = 0; i < msg->msg_iovlen; ++i)
1798 rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, app_tlvs,
1799 flags, msg->msg_name, msg->msg_namelen);
1805 if (rv < iov[i].iov_len)
1810 vec_free (app_tlvs);
1812 if (rv < 0 && total == 0)
1822 size = libc_sendmsg (fd, msg, flags);
1830 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1833 const char *func_str;
1834 u32 sh = ldp_fd_to_vlsh (fd);
1838 if (sh != VLS_INVALID_HANDLE)
1840 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1846 func_str = "libc_sendmmsg";
1849 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1850 "vmessages %p, vlen %u, flags 0x%x",
1851 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1853 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1860 int errno_val = errno;
1862 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1863 "rv %d, errno = %d", getpid (), fd, fd,
1864 func_str, size, errno_val);
1868 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1869 getpid (), fd, fd, size, size);
1876 recvmsg (int fd, struct msghdr * msg, int flags)
1883 vlsh = ldp_fd_to_vlsh (fd);
1884 if (vlsh != VLS_INVALID_HANDLE)
1886 struct iovec *iov = msg->msg_iov;
1887 ssize_t max_deq, total = 0;
1890 max_deq = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
1894 for (i = 0; i < msg->msg_iovlen; i++)
1896 rv = ldp_vls_recvfrom (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
1897 (i == 0 ? msg->msg_name : NULL),
1898 (i == 0 ? &msg->msg_namelen : NULL));
1904 if (rv < iov[i].iov_len)
1907 if (total >= max_deq)
1911 if (rv < 0 && total == 0)
1918 if (msg->msg_controllen)
1919 ldp_make_cmsg (vlsh, msg);
1925 size = libc_recvmsg (fd, msg, flags);
1933 recvmmsg (int fd, struct mmsghdr *vmessages,
1934 unsigned int vlen, int flags, struct timespec *tmo)
1936 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1941 sh = ldp_fd_to_vlsh (fd);
1943 if (sh != VLS_INVALID_HANDLE)
1950 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
1951 clib_time_init (&ldpw->clib_time);
1954 time_out = (f64) tmo->tv_sec + (f64) tmo->tv_nsec / (f64) 1e9;
1955 time_out += clib_time_now (&ldpw->clib_time);
1959 time_out = (f64) ~0;
1962 while (nvecs < vlen)
1964 mh = &vmessages[nvecs];
1965 rv = recvmsg (fd, &mh->msg_hdr, flags);
1973 if (!time_out || clib_time_now (&ldpw->clib_time) >= time_out)
1979 return nvecs > 0 ? nvecs : rv;
1983 return libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1989 getsockopt (int fd, int level, int optname,
1990 void *__restrict optval, socklen_t * __restrict optlen)
1997 vlsh = ldp_fd_to_vlsh (fd);
1998 if (vlsh != VLS_INVALID_HANDLE)
2008 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
2012 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
2016 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
2020 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
2024 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
2026 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
2027 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
2028 memset (optval, 0, *optlen);
2034 case TCP_CONGESTION:
2035 *optlen = strlen ("cubic");
2036 strncpy (optval, "cubic", *optlen + 1);
2040 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
2041 "optname %d unsupported!", fd, vlsh, optname);
2049 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
2052 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
2053 "optname %d unsupported!", fd, vlsh, optname);
2061 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
2064 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
2067 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
2068 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
2071 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
2075 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
2079 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
2082 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEPORT, optval, optlen);
2085 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
2088 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_DOMAIN, optval, optlen);
2091 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
2093 case SO_BINDTODEVICE:
2097 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
2098 "optname %d unsupported!", fd, vlsh, optname);
2106 if (rv != VPPCOM_OK)
2114 rv = libc_getsockopt (fd, level, optname, optval, optlen);
2121 setsockopt (int fd, int level, int optname,
2122 const void *optval, socklen_t optlen)
2129 vlsh = ldp_fd_to_vlsh (fd);
2130 if (vlsh != VLS_INVALID_HANDLE)
2140 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
2141 (void *) optval, &optlen);
2144 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
2145 (void *) optval, &optlen);
2148 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
2149 (void *) optval, &optlen);
2152 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
2153 (void *) optval, &optlen);
2155 case TCP_CONGESTION:
2161 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
2162 "optname %d unsupported!", fd, vlsh, optname);
2170 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
2171 (void *) optval, &optlen);
2174 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
2175 "optname %d unsupported!", fd, vlsh, optname);
2183 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
2184 (void *) optval, &optlen);
2187 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
2188 (void *) optval, &optlen);
2191 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEPORT, (void *) optval,
2195 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
2196 (void *) optval, &optlen);
2202 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
2203 "optname %d unsupported!", fd, vlsh, optname);
2211 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_IP_PKTINFO, (void *) optval,
2216 "ERROR: fd %d: setsockopt SOL_IP: vlsh %u optname %d"
2226 if (rv != VPPCOM_OK)
2234 rv = libc_setsockopt (fd, level, optname, optval, optlen);
2241 listen (int fd, int n)
2248 vlsh = ldp_fd_to_vlsh (fd);
2249 if (vlsh != VLS_INVALID_HANDLE)
2251 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2253 rv = vls_listen (vlsh, n);
2254 if (rv != VPPCOM_OK)
2262 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2263 rv = libc_listen (fd, n);
2266 LDBG (1, "fd %d: returning %d", fd, rv);
2271 ldp_accept4 (int listen_fd, __SOCKADDR_ARG _addr,
2272 socklen_t *__restrict addr_len, int flags)
2274 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
2275 vls_handle_t listen_vlsh, accept_vlsh;
2280 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2281 if (listen_vlsh != VLS_INVALID_HANDLE)
2284 u8 src_addr[sizeof (struct sockaddr_in6)];
2285 memset (&ep, 0, sizeof (ep));
2288 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2289 " ep %p, flags 0x%x", listen_fd, listen_vlsh, &ep, flags);
2291 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2292 if (accept_vlsh < 0)
2294 errno = -accept_vlsh;
2299 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2300 if (rv != VPPCOM_OK)
2302 (void) vls_close (accept_vlsh);
2308 rv = ldp_vlsh_to_fd (accept_vlsh);
2314 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2315 " flags 0x%x", listen_fd, addr, addr_len, flags);
2317 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2320 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2326 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2329 return ldp_accept4 (fd, addr, addr_len, flags);
2333 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2335 return ldp_accept4 (fd, addr, addr_len, 0);
2339 shutdown (int fd, int how)
2346 vlsh = ldp_fd_to_vlsh (fd);
2347 if (vlsh != VLS_INVALID_HANDLE)
2349 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2350 rv = vls_shutdown (vlsh, how);
2354 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2355 rv = libc_shutdown (fd, how);
2362 epoll_create1 (int flags)
2364 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2370 if (ldp->vcl_needs_real_epoll || vls_use_real_epoll ())
2372 /* Make sure workers have been allocated */
2375 ldp_alloc_workers ();
2376 ldpw = ldp_worker_get_current ();
2378 rv = libc_epoll_create1 (flags);
2379 ldp->vcl_needs_real_epoll = 0;
2380 ldpw->vcl_mq_epfd = rv;
2381 LDBG (0, "created vcl epfd %u", rv);
2385 vlsh = vls_epoll_create ();
2386 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2393 rv = ldp_vlsh_to_fd (vlsh);
2395 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2400 epoll_create (int size)
2402 return epoll_create1 (0);
2406 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2408 vls_handle_t vep_vlsh, vlsh;
2413 vep_vlsh = ldp_fd_to_vlsh (epfd);
2414 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2416 /* The LDP epoll_create1 always creates VCL epfd's.
2417 * The app should never have a kernel base epoll fd unless it
2418 * was acquired outside of the LD_PRELOAD process context.
2419 * In any case, if we get one, punt it to libc_epoll_ctl.
2422 "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2424 epfd, op, fd, event ? event->events : 0);
2426 rv = libc_epoll_ctl (epfd, op, fd, event);
2430 vlsh = ldp_fd_to_vlsh (fd);
2432 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2435 if (vlsh != VLS_INVALID_HANDLE)
2438 "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2440 epfd, vep_vlsh, op, vlsh, event ? event->events : 0);
2442 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2443 if (rv != VPPCOM_OK)
2452 u32 size = sizeof (epfd);
2454 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2457 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2458 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2460 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2467 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2476 else if (PREDICT_FALSE (libc_epfd < 0))
2483 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2484 " event %p", epfd, libc_epfd, op, fd, event);
2486 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2494 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2495 int timeout, const sigset_t * sigmask)
2497 ldp_worker_ctx_t *ldpw;
2498 double time_to_wait = (double) 0, max_time;
2499 int libc_epfd, rv = 0;
2500 vls_handle_t ep_vlsh;
2504 if (PREDICT_FALSE (!events || (timeout < -1)))
2510 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2511 vls_register_vcl_worker ();
2513 ldpw = ldp_worker_get_current ();
2514 if (epfd == ldpw->vcl_mq_epfd)
2515 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2517 ep_vlsh = ldp_fd_to_vlsh (epfd);
2518 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2520 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2525 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2526 clib_time_init (&ldpw->clib_time);
2527 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2528 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2530 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2531 if (PREDICT_FALSE (libc_epfd < 0))
2538 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2539 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2540 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2543 if (!ldpw->epoll_wait_vcl)
2545 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2548 ldpw->epoll_wait_vcl = 1;
2559 ldpw->epoll_wait_vcl = 0;
2563 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2568 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2575 ldp_epoll_pwait_eventfd (int epfd, struct epoll_event *events,
2576 int maxevents, int timeout, const sigset_t * sigmask)
2578 int libc_epfd, rv = 0, num_ev, libc_num_ev, vcl_wups = 0;
2579 struct epoll_event *libc_evts;
2580 ldp_worker_ctx_t *ldpw;
2581 vls_handle_t ep_vlsh;
2585 if (PREDICT_FALSE (!events || (timeout < -1)))
2591 /* Make sure the vcl worker is valid. Could be that epoll fd was created on
2592 * one thread but it is now used on another */
2593 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2594 vls_register_vcl_worker ();
2596 ldpw = ldp_worker_get_current ();
2597 if (epfd == ldpw->vcl_mq_epfd)
2598 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2600 ep_vlsh = ldp_fd_to_vlsh (epfd);
2601 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2603 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2608 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2609 if (PREDICT_FALSE (!libc_epfd))
2611 u32 size = sizeof (epfd);
2613 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2614 "EPOLL_CLOEXEC", epfd, ep_vlsh);
2615 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2622 rv = vls_attr (ep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd, &size);
2630 if (PREDICT_FALSE (libc_epfd <= 0))
2637 if (PREDICT_FALSE (!ldpw->mq_epfd_added))
2639 struct epoll_event e = { 0 };
2641 e.data.fd = ldpw->vcl_mq_epfd;
2642 if (libc_epoll_ctl (libc_epfd, EPOLL_CTL_ADD, ldpw->vcl_mq_epfd, &e) <
2645 LDBG (0, "epfd %d, add libc mq epoll fd %d to libc epoll fd %d",
2646 epfd, ldpw->vcl_mq_epfd, libc_epfd);
2650 ldpw->mq_epfd_added = 1;
2653 /* Request to only drain unhandled to prevent libc_epoll_wait starved */
2654 rv = vls_epoll_wait (ep_vlsh, events, maxevents, -2);
2658 if (rv >= maxevents)
2661 else if (PREDICT_FALSE (rv < 0))
2670 libc_evts = &events[rv];
2672 libc_epoll_pwait (libc_epfd, libc_evts, maxevents - rv, timeout, sigmask);
2673 if (libc_num_ev <= 0)
2675 rv = rv >= 0 ? rv : -1;
2679 for (int i = 0; i < libc_num_ev; i++)
2681 if (libc_evts[i].data.fd == ldpw->vcl_mq_epfd)
2683 /* We should remove mq epoll fd from events. */
2685 if (i != libc_num_ev)
2687 libc_evts[i].events = libc_evts[libc_num_ev].events;
2688 libc_evts[i].data.u64 = libc_evts[libc_num_ev].data.u64;
2690 num_ev = vls_epoll_wait (ep_vlsh, &libc_evts[libc_num_ev],
2691 maxevents - libc_num_ev, 0);
2692 if (PREDICT_TRUE (num_ev > 0))
2694 /* Woken up by vcl but no events generated. Accept it once */
2695 if (rv == 0 && libc_num_ev == 0 && timeout && vcl_wups++ < 1)
2708 epoll_pwait (int epfd, struct epoll_event *events,
2709 int maxevents, int timeout, const sigset_t * sigmask)
2711 if (vls_use_eventfd ())
2712 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout,
2715 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2719 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2721 if (vls_use_eventfd ())
2722 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout, NULL);
2724 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2728 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2730 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2731 int rv, i, n_revents = 0;
2736 LDBG (3, "fds %p, nfds %ld, timeout %d", fds, nfds, timeout);
2738 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2739 clib_time_init (&ldpw->clib_time);
2741 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2742 max_time += clib_time_now (&ldpw->clib_time);
2744 for (i = 0; i < nfds; i++)
2749 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2750 if (vlsh != VLS_INVALID_HANDLE)
2752 fds[i].fd = -fds[i].fd;
2753 vec_add2 (ldpw->vcl_poll, vp, 1);
2755 vp->sh = vlsh_to_sh (vlsh);
2756 vp->events = fds[i].events;
2757 #ifdef __USE_XOPEN2K
2758 if (fds[i].events & POLLRDNORM)
2759 vp->events |= POLLIN;
2760 if (fds[i].events & POLLWRNORM)
2761 vp->events |= POLLOUT;
2763 vp->revents = fds[i].revents;
2767 vec_add1 (ldpw->libc_poll, fds[i]);
2768 vec_add1 (ldpw->libc_poll_idxs, i);
2774 if (vec_len (ldpw->vcl_poll))
2776 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2787 if (vec_len (ldpw->libc_poll))
2789 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2802 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2806 vec_foreach (vp, ldpw->vcl_poll)
2808 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2809 fds[vp->fds_ndx].revents = vp->revents;
2810 #ifdef __USE_XOPEN2K
2811 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2812 (fds[vp->fds_ndx].events & POLLRDNORM))
2813 fds[vp->fds_ndx].revents |= POLLRDNORM;
2814 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2815 (fds[vp->fds_ndx].events & POLLWRNORM))
2816 fds[vp->fds_ndx].revents |= POLLWRNORM;
2819 vec_reset_length (ldpw->vcl_poll);
2821 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2823 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2825 vec_reset_length (ldpw->libc_poll_idxs);
2826 vec_reset_length (ldpw->libc_poll);
2833 ppoll (struct pollfd *fds, nfds_t nfds,
2834 const struct timespec *timeout, const sigset_t * sigmask)
2838 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2846 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2848 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2851 * This function is called when the library is loaded
2854 ldp_constructor (void)
2856 swrap_constructor ();
2857 if (ldp_init () != 0)
2859 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2863 else if (LDP_DEBUG > 0)
2864 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2868 * This function is called when the library is unloaded
2871 ldp_destructor (void)
2874 swrap_destructor ();
2879 /* Don't use clib_warning() here because that calls writev()
2880 * which will call ldp_init().
2883 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2884 __func__, __LINE__, getpid ());
2889 * fd.io coding-style-patch-verification: ON
2892 * eval: (c-set-style "gnu")