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 #ifndef SO_ORIGINAL_DST
71 /* from <linux/netfilter_ipv4.h> */
72 #define SO_ORIGINAL_DST 80
74 typedef struct ldp_worker_ctx_
77 clib_time_t clib_time;
82 clib_bitmap_t *rd_bitmap;
83 clib_bitmap_t *wr_bitmap;
84 clib_bitmap_t *ex_bitmap;
85 clib_bitmap_t *si_rd_bitmap;
86 clib_bitmap_t *si_wr_bitmap;
87 clib_bitmap_t *si_ex_bitmap;
88 clib_bitmap_t *libc_rd_bitmap;
89 clib_bitmap_t *libc_wr_bitmap;
90 clib_bitmap_t *libc_ex_bitmap;
96 struct pollfd *libc_poll;
108 /* clib_bitmap_t, fd_mask and vcl_si_set are used interchangeably. Make sure
109 * they are the same size */
110 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
111 "ldp bitmap size mismatch");
112 STATIC_ASSERT (sizeof (vcl_si_set) == sizeof (fd_mask),
113 "ldp bitmap size mismatch");
117 ldp_worker_ctx_t *workers;
119 char app_name[LDP_APP_NAME_MAX];
124 /** vcl needs next epoll_create to go to libc_epoll */
125 u8 vcl_needs_real_epoll;
128 * crypto state used only for testing
134 #define LDP_DEBUG ldp->debug
136 #define LDBG(_lvl, _fmt, _args...) \
137 if (ldp->debug > _lvl) \
139 int errno_saved = errno; \
140 fprintf (stderr, "ldp<%d>: " _fmt "\n", getpid(), ##_args); \
141 errno = errno_saved; \
144 static ldp_main_t ldp_main = {
145 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
146 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
147 .debug = LDP_DEBUG_INIT,
148 .transparent_tls = 0,
152 static ldp_main_t *ldp = &ldp_main;
154 static inline ldp_worker_ctx_t *
155 ldp_worker_get_current (void)
157 return (ldp->workers + vppcom_worker_index ());
161 * RETURN: 0 on success or -1 on error.
164 ldp_set_app_name (char *app_name)
166 snprintf (ldp->app_name, LDP_APP_NAME_MAX, "%s-ldp-%d", app_name, getpid ());
172 if (ldp->app_name[0] == '\0')
173 ldp_set_app_name (program_invocation_short_name);
175 return ldp->app_name;
179 ldp_vlsh_to_fd (vls_handle_t vlsh)
181 return (vlsh + ldp->vlsh_bit_val);
184 static inline vls_handle_t
185 ldp_fd_to_vlsh (int fd)
187 if (fd < ldp->vlsh_bit_val)
188 return VLS_INVALID_HANDLE;
190 return (fd - ldp->vlsh_bit_val);
194 ldp_alloc_workers (void)
198 ldp->workers = vec_new (ldp_worker_ctx_t, LDP_MAX_NWORKERS);
204 char *env_var_str = getenv (LDP_ENV_DEBUG);
208 if (sscanf (env_var_str, "%u", &tmp) != 1)
209 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
210 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
215 LDBG (0, "configured LDP debug level (%u) from env var "
216 LDP_ENV_DEBUG "!", ldp->debug);
220 env_var_str = getenv (LDP_ENV_APP_NAME);
223 ldp_set_app_name (env_var_str);
224 LDBG (0, "configured LDP app name (%s) from the env var "
225 LDP_ENV_APP_NAME "!", ldp->app_name);
228 env_var_str = getenv (LDP_ENV_SID_BIT);
232 if (sscanf (env_var_str, "%u", &sb) != 1)
234 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
235 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
236 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
238 else if (sb < LDP_SID_BIT_MIN)
240 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
241 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
243 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
244 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
245 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
246 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
248 else if (sb > LDP_SID_BIT_MAX)
250 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
251 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
253 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
254 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
255 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
256 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
260 ldp->vlsh_bit_val = (1 << sb);
261 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
263 LDBG (0, "configured LDP sid bit (%u) from "
264 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
265 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
268 /* Make sure there are enough bits in the fd set for vcl sessions */
269 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
271 /* Only valid for select/pselect, so just WARNING and not exit */
273 "WARNING: LDP vlsh bit value %d > FD_SETSIZE/2 %d, "
274 "select/pselect not supported now!",
275 ldp->vlsh_bit_val, FD_SETSIZE / 2);
278 env_var_str = getenv (LDP_ENV_TLS_TRANS);
281 ldp->transparent_tls = 1;
288 ldp_worker_ctx_t *ldpw;
293 LDBG (0, "LDP is initialized already");
299 ldp->vcl_needs_real_epoll = 1;
300 rv = vls_app_create (ldp_get_app_name ());
303 ldp->vcl_needs_real_epoll = 0;
304 if (rv == VPPCOM_EEXIST)
307 "\nERROR: ldp_init: vppcom_app_create()"
308 " failed! rv = %d (%s)\n",
309 rv, vppcom_retval_str (rv));
313 ldp->vcl_needs_real_epoll = 0;
314 ldp_alloc_workers ();
316 vec_foreach (ldpw, ldp->workers)
317 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
319 LDBG (0, "LDP initialization: done!");
324 #define ldp_init_check() \
325 if (PREDICT_FALSE (!ldp->init)) \
327 if ((errno = -ldp_init ())) \
339 vlsh = ldp_fd_to_vlsh (fd);
340 if (vlsh != VLS_INVALID_HANDLE)
342 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
345 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
346 u32 size = sizeof (epfd);
348 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
351 ldpw->mq_epfd_added = 0;
354 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
356 else if (PREDICT_FALSE (epfd < 0))
363 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
365 rv = vls_close (vlsh);
374 LDBG (0, "fd %d: calling libc_close", fd);
375 rv = libc_close (fd);
383 read (int fd, void *buf, size_t nbytes)
390 vlsh = ldp_fd_to_vlsh (fd);
391 if (vlsh != VLS_INVALID_HANDLE)
393 size = vls_read (vlsh, buf, nbytes);
402 size = libc_read (fd, buf, nbytes);
409 readv (int fd, const struct iovec * iov, int iovcnt)
411 int rv = 0, i, total = 0;
417 vlsh = ldp_fd_to_vlsh (fd);
418 if (vlsh != VLS_INVALID_HANDLE)
420 for (i = 0; i < iovcnt; ++i)
422 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
428 if (rv < iov[i].iov_len)
432 if (rv < 0 && total == 0)
442 size = libc_readv (fd, iov, iovcnt);
449 write (int fd, const void *buf, size_t nbytes)
456 vlsh = ldp_fd_to_vlsh (fd);
457 if (vlsh != VLS_INVALID_HANDLE)
459 size = vls_write_msg (vlsh, (void *) buf, nbytes);
468 size = libc_write (fd, buf, nbytes);
475 writev (int fd, const struct iovec * iov, int iovcnt)
477 ssize_t size = 0, total = 0;
483 vlsh = ldp_fd_to_vlsh (fd);
484 if (vlsh != VLS_INVALID_HANDLE)
486 for (i = 0; i < iovcnt; ++i)
488 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
494 if (rv < iov[i].iov_len)
499 if (rv < 0 && total == 0)
509 size = libc_writev (fd, iov, iovcnt);
516 fcntl_internal (int fd, int cmd, va_list ap)
521 vlsh = ldp_fd_to_vlsh (fd);
522 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
523 if (vlsh != VLS_INVALID_HANDLE)
525 int flags = va_arg (ap, int);
528 size = sizeof (flags);
533 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
537 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
542 /* TODO handle this */
543 LDBG (0, "F_SETFD ignored flags %u", flags);
559 rv = libc_vfcntl64 (fd, cmd, ap);
561 rv = libc_vfcntl (fd, cmd, ap);
569 fcntl (int fd, int cmd, ...)
577 rv = fcntl_internal (fd, cmd, ap);
584 fcntl64 (int fd, int cmd, ...)
592 rv = fcntl_internal (fd, cmd, ap);
598 ioctl (int fd, unsigned long int cmd, ...)
608 vlsh = ldp_fd_to_vlsh (fd);
609 if (vlsh != VLS_INVALID_HANDLE)
614 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
619 u32 flags = *(va_arg (ap, int *)) ? O_NONBLOCK : 0;
620 u32 size = sizeof (flags);
622 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
623 * non-blocking, the flags should be read here and merged
626 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
642 rv = libc_vioctl (fd, cmd, ap);
650 ldp_select_init_maps (fd_set * __restrict original,
651 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
652 clib_bitmap_t ** vclb, int nfds, u32 minbits,
653 u32 n_bytes, uword * si_bits, uword * libc_bits)
655 uword si_bits_set, libc_bits_set;
659 clib_bitmap_validate (*vclb, minbits);
660 clib_bitmap_validate (*libcb, minbits);
661 clib_bitmap_validate (*resultb, minbits);
662 clib_memcpy_fast (*resultb, original, n_bytes);
663 memset (original, 0, n_bytes);
665 clib_bitmap_foreach (fd, *resultb) {
668 vlsh = ldp_fd_to_vlsh (fd);
669 if (vlsh == VLS_INVALID_HANDLE)
670 clib_bitmap_set_no_check (*libcb, fd, 1);
672 *vclb = clib_bitmap_set (*vclb, vlsh_to_session_index (vlsh), 1);
675 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
676 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
677 clib_bitmap_validate (*resultb, *si_bits);
679 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
680 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
684 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
693 clib_bitmap_foreach (si, vclb) {
694 vlsh = vls_session_index_to_vlsh (si);
695 ASSERT (vlsh != VLS_INVALID_HANDLE);
696 fd = ldp_vlsh_to_fd (vlsh);
697 if (PREDICT_FALSE (fd < 0))
709 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
716 clib_bitmap_foreach (fd, result)
717 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);
1751 memset (cmsg, 0, sizeof (*cmsg));
1753 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_IP_PKTINFO, (void *) &optval, &optlen))
1759 u8 addr_buf[sizeof (struct in_addr)];
1760 u32 size = sizeof (ep);
1764 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size))
1766 struct in_pktinfo pi = {};
1768 clib_memcpy (&pi.ipi_addr, ep.ip, sizeof (struct in_addr));
1769 cmsg->cmsg_level = SOL_IP;
1770 cmsg->cmsg_type = IP_PKTINFO;
1771 cmsg->cmsg_len = CMSG_LEN (sizeof (pi));
1772 clib_memcpy (CMSG_DATA (cmsg), &pi, sizeof (pi));
1780 sendmsg (int fd, const struct msghdr * msg, int flags)
1787 vlsh = ldp_fd_to_vlsh (fd);
1788 if (vlsh != VLS_INVALID_HANDLE)
1790 vppcom_endpt_tlv_t *app_tlvs = 0;
1791 struct iovec *iov = msg->msg_iov;
1795 ldp_parse_cmsg (vlsh, msg, &app_tlvs);
1797 for (i = 0; i < msg->msg_iovlen; ++i)
1799 rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, app_tlvs,
1800 flags, msg->msg_name, msg->msg_namelen);
1806 if (rv < iov[i].iov_len)
1811 vec_free (app_tlvs);
1813 if (rv < 0 && total == 0)
1823 size = libc_sendmsg (fd, msg, flags);
1831 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1834 const char *func_str;
1835 u32 sh = ldp_fd_to_vlsh (fd);
1839 if (sh != VLS_INVALID_HANDLE)
1841 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1847 func_str = "libc_sendmmsg";
1850 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1851 "vmessages %p, vlen %u, flags 0x%x",
1852 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1854 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1861 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);
2048 case SO_ORIGINAL_DST:
2050 vls_attr (vlsh, VPPCOM_ATTR_GET_ORIGINAL_DST, optval, optlen);
2054 "ERROR: fd %d: getsockopt SOL_IP: vlsh %u "
2055 "optname %d unsupported!",
2064 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
2067 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
2068 "optname %d unsupported!", fd, vlsh, optname);
2076 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
2079 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
2082 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
2083 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
2086 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
2090 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
2094 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
2097 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEPORT, optval, optlen);
2100 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
2103 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_DOMAIN, optval, optlen);
2106 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
2108 case SO_BINDTODEVICE:
2112 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
2113 "optname %d unsupported!", fd, vlsh, optname);
2121 if (rv != VPPCOM_OK)
2129 rv = libc_getsockopt (fd, level, optname, optval, optlen);
2136 setsockopt (int fd, int level, int optname,
2137 const void *optval, socklen_t optlen)
2144 vlsh = ldp_fd_to_vlsh (fd);
2145 if (vlsh != VLS_INVALID_HANDLE)
2155 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
2156 (void *) optval, &optlen);
2159 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
2160 (void *) optval, &optlen);
2163 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
2164 (void *) optval, &optlen);
2167 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
2168 (void *) optval, &optlen);
2170 case TCP_CONGESTION:
2176 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
2177 "optname %d unsupported!", fd, vlsh, optname);
2185 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
2186 (void *) optval, &optlen);
2189 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
2190 "optname %d unsupported!", fd, vlsh, optname);
2198 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
2199 (void *) optval, &optlen);
2202 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
2203 (void *) optval, &optlen);
2206 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEPORT, (void *) optval,
2210 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
2211 (void *) optval, &optlen);
2217 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
2218 "optname %d unsupported!", fd, vlsh, optname);
2226 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_IP_PKTINFO, (void *) optval,
2231 "ERROR: fd %d: setsockopt SOL_IP: vlsh %u optname %d"
2241 if (rv != VPPCOM_OK)
2249 rv = libc_setsockopt (fd, level, optname, optval, optlen);
2256 listen (int fd, int n)
2263 vlsh = ldp_fd_to_vlsh (fd);
2264 if (vlsh != VLS_INVALID_HANDLE)
2266 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2268 rv = vls_listen (vlsh, n);
2269 if (rv != VPPCOM_OK)
2277 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2278 rv = libc_listen (fd, n);
2281 LDBG (1, "fd %d: returning %d", fd, rv);
2286 ldp_accept4 (int listen_fd, __SOCKADDR_ARG _addr,
2287 socklen_t *__restrict addr_len, int flags)
2289 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
2290 vls_handle_t listen_vlsh, accept_vlsh;
2295 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2296 if (listen_vlsh != VLS_INVALID_HANDLE)
2299 u8 src_addr[sizeof (struct sockaddr_in6)];
2300 memset (&ep, 0, sizeof (ep));
2303 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2304 " ep %p, flags 0x%x", listen_fd, listen_vlsh, &ep, flags);
2306 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2307 if (accept_vlsh < 0)
2309 errno = -accept_vlsh;
2314 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2315 if (rv != VPPCOM_OK)
2317 (void) vls_close (accept_vlsh);
2323 rv = ldp_vlsh_to_fd (accept_vlsh);
2329 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2330 " flags 0x%x", listen_fd, addr, addr_len, flags);
2332 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2335 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2341 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2344 return ldp_accept4 (fd, addr, addr_len, flags);
2348 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2350 return ldp_accept4 (fd, addr, addr_len, 0);
2354 shutdown (int fd, int how)
2361 vlsh = ldp_fd_to_vlsh (fd);
2362 if (vlsh != VLS_INVALID_HANDLE)
2364 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2365 rv = vls_shutdown (vlsh, how);
2369 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2370 rv = libc_shutdown (fd, how);
2377 epoll_create1 (int flags)
2379 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2385 if (ldp->vcl_needs_real_epoll || vls_use_real_epoll ())
2387 /* Make sure workers have been allocated */
2390 ldp_alloc_workers ();
2391 ldpw = ldp_worker_get_current ();
2393 rv = libc_epoll_create1 (flags);
2394 ldp->vcl_needs_real_epoll = 0;
2395 ldpw->vcl_mq_epfd = rv;
2396 LDBG (0, "created vcl epfd %u", rv);
2400 vlsh = vls_epoll_create ();
2401 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2408 rv = ldp_vlsh_to_fd (vlsh);
2410 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2415 epoll_create (int size)
2417 return epoll_create1 (0);
2421 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2423 vls_handle_t vep_vlsh, vlsh;
2428 vep_vlsh = ldp_fd_to_vlsh (epfd);
2429 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2431 /* The LDP epoll_create1 always creates VCL epfd's.
2432 * The app should never have a kernel base epoll fd unless it
2433 * was acquired outside of the LD_PRELOAD process context.
2434 * In any case, if we get one, punt it to libc_epoll_ctl.
2437 "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2439 epfd, op, fd, event ? event->events : 0);
2441 rv = libc_epoll_ctl (epfd, op, fd, event);
2445 vlsh = ldp_fd_to_vlsh (fd);
2447 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2450 if (vlsh != VLS_INVALID_HANDLE)
2453 "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2455 epfd, vep_vlsh, op, vlsh, event ? event->events : 0);
2457 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2458 if (rv != VPPCOM_OK)
2467 u32 size = sizeof (epfd);
2469 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2472 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2473 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2475 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2482 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2491 else if (PREDICT_FALSE (libc_epfd < 0))
2498 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2499 " event %p", epfd, libc_epfd, op, fd, event);
2501 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2509 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2510 int timeout, const sigset_t * sigmask)
2512 ldp_worker_ctx_t *ldpw;
2513 double time_to_wait = (double) 0, max_time;
2514 int libc_epfd, rv = 0;
2515 vls_handle_t ep_vlsh;
2519 if (PREDICT_FALSE (!events || (timeout < -1)))
2525 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2526 vls_register_vcl_worker ();
2528 ldpw = ldp_worker_get_current ();
2529 if (epfd == ldpw->vcl_mq_epfd)
2530 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2532 ep_vlsh = ldp_fd_to_vlsh (epfd);
2533 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2535 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2540 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2541 clib_time_init (&ldpw->clib_time);
2542 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2543 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2545 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2546 if (PREDICT_FALSE (libc_epfd < 0))
2553 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2554 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2555 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2558 if (!ldpw->epoll_wait_vcl)
2560 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2563 ldpw->epoll_wait_vcl = 1;
2574 ldpw->epoll_wait_vcl = 0;
2578 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2583 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2590 ldp_epoll_pwait_eventfd (int epfd, struct epoll_event *events,
2591 int maxevents, int timeout, const sigset_t * sigmask)
2593 int libc_epfd, rv = 0, num_ev, libc_num_ev, vcl_wups = 0;
2594 struct epoll_event *libc_evts;
2595 ldp_worker_ctx_t *ldpw;
2596 vls_handle_t ep_vlsh;
2600 if (PREDICT_FALSE (!events || (timeout < -1)))
2606 /* Make sure the vcl worker is valid. Could be that epoll fd was created on
2607 * one thread but it is now used on another */
2608 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2609 vls_register_vcl_worker ();
2611 ldpw = ldp_worker_get_current ();
2612 if (epfd == ldpw->vcl_mq_epfd)
2613 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2615 ep_vlsh = ldp_fd_to_vlsh (epfd);
2616 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2618 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2623 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2624 if (PREDICT_FALSE (!libc_epfd))
2626 u32 size = sizeof (epfd);
2628 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2629 "EPOLL_CLOEXEC", epfd, ep_vlsh);
2630 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2637 rv = vls_attr (ep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd, &size);
2645 if (PREDICT_FALSE (libc_epfd <= 0))
2652 if (PREDICT_FALSE (!ldpw->mq_epfd_added))
2654 struct epoll_event e = { 0 };
2656 e.data.fd = ldpw->vcl_mq_epfd;
2657 if (libc_epoll_ctl (libc_epfd, EPOLL_CTL_ADD, ldpw->vcl_mq_epfd, &e) <
2660 LDBG (0, "epfd %d, add libc mq epoll fd %d to libc epoll fd %d",
2661 epfd, ldpw->vcl_mq_epfd, libc_epfd);
2665 ldpw->mq_epfd_added = 1;
2668 /* Request to only drain unhandled to prevent libc_epoll_wait starved */
2669 rv = vls_epoll_wait (ep_vlsh, events, maxevents, -2);
2673 if (rv >= maxevents)
2677 else if (PREDICT_FALSE (rv < 0))
2686 libc_evts = &events[rv];
2688 libc_epoll_pwait (libc_epfd, libc_evts, maxevents, timeout, sigmask);
2689 if (libc_num_ev <= 0)
2691 rv = rv >= 0 ? rv : -1;
2695 for (int i = 0; i < libc_num_ev; i++)
2697 if (libc_evts[i].data.fd == ldpw->vcl_mq_epfd)
2699 /* We should remove mq epoll fd from events. */
2701 if (i != libc_num_ev)
2703 libc_evts[i].events = libc_evts[libc_num_ev].events;
2704 libc_evts[i].data.u64 = libc_evts[libc_num_ev].data.u64;
2706 num_ev = vls_epoll_wait (ep_vlsh, &libc_evts[libc_num_ev],
2707 maxevents - libc_num_ev, 0);
2708 if (PREDICT_TRUE (num_ev > 0))
2710 /* Woken up by vcl but no events generated. Accept it once */
2711 if (rv == 0 && libc_num_ev == 0 && timeout && vcl_wups++ < 1)
2724 epoll_pwait (int epfd, struct epoll_event *events,
2725 int maxevents, int timeout, const sigset_t * sigmask)
2727 if (vls_use_eventfd ())
2728 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout,
2731 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2735 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2737 if (vls_use_eventfd ())
2738 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout, NULL);
2740 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2744 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2746 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2747 int rv, i, n_revents = 0;
2752 LDBG (3, "fds %p, nfds %ld, timeout %d", fds, nfds, timeout);
2754 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2755 clib_time_init (&ldpw->clib_time);
2757 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2758 max_time += clib_time_now (&ldpw->clib_time);
2760 for (i = 0; i < nfds; i++)
2765 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2766 if (vlsh != VLS_INVALID_HANDLE)
2768 fds[i].fd = -fds[i].fd;
2769 vec_add2 (ldpw->vcl_poll, vp, 1);
2771 vp->sh = vlsh_to_sh (vlsh);
2772 vp->events = fds[i].events;
2773 #ifdef __USE_XOPEN2K
2774 if (fds[i].events & POLLRDNORM)
2775 vp->events |= POLLIN;
2776 if (fds[i].events & POLLWRNORM)
2777 vp->events |= POLLOUT;
2779 vp->revents = fds[i].revents;
2783 vec_add1 (ldpw->libc_poll, fds[i]);
2784 vec_add1 (ldpw->libc_poll_idxs, i);
2790 if (vec_len (ldpw->vcl_poll))
2792 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2803 if (vec_len (ldpw->libc_poll))
2805 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2818 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2822 vec_foreach (vp, ldpw->vcl_poll)
2824 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2825 fds[vp->fds_ndx].revents = vp->revents;
2826 #ifdef __USE_XOPEN2K
2827 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2828 (fds[vp->fds_ndx].events & POLLRDNORM))
2829 fds[vp->fds_ndx].revents |= POLLRDNORM;
2830 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2831 (fds[vp->fds_ndx].events & POLLWRNORM))
2832 fds[vp->fds_ndx].revents |= POLLWRNORM;
2835 vec_reset_length (ldpw->vcl_poll);
2837 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2839 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2841 vec_reset_length (ldpw->libc_poll_idxs);
2842 vec_reset_length (ldpw->libc_poll);
2849 ppoll (struct pollfd *fds, nfds_t nfds,
2850 const struct timespec *timeout, const sigset_t * sigmask)
2854 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2862 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2864 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2867 * This function is called when the library is loaded
2870 ldp_constructor (void)
2872 swrap_constructor ();
2873 if (ldp_init () != 0)
2875 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2879 else if (LDP_DEBUG > 0)
2880 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2884 * This function is called when the library is unloaded
2887 ldp_destructor (void)
2890 swrap_destructor ();
2895 /* Don't use clib_warning() here because that calls writev()
2896 * which will call ldp_init().
2899 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2900 __func__, __LINE__, getpid ());
2905 * fd.io coding-style-patch-verification: ON
2908 * eval: (c-set-style "gnu")