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 pool_alloc (ldp->workers, 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 ();
315 ldpw = ldp_worker_get_current ();
317 pool_foreach (ldpw, ldp->workers) {
318 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
321 LDBG (0, "LDP initialization: done!");
326 #define ldp_init_check() \
327 if (PREDICT_FALSE (!ldp->init)) \
329 if ((errno = -ldp_init ())) \
341 vlsh = ldp_fd_to_vlsh (fd);
342 if (vlsh != VLS_INVALID_HANDLE)
344 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
347 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
348 u32 size = sizeof (epfd);
350 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
353 ldpw->mq_epfd_added = 0;
356 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
358 else if (PREDICT_FALSE (epfd < 0))
365 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
367 rv = vls_close (vlsh);
376 LDBG (0, "fd %d: calling libc_close", fd);
377 rv = libc_close (fd);
385 read (int fd, void *buf, size_t nbytes)
392 vlsh = ldp_fd_to_vlsh (fd);
393 if (vlsh != VLS_INVALID_HANDLE)
395 size = vls_read (vlsh, buf, nbytes);
404 size = libc_read (fd, buf, nbytes);
411 readv (int fd, const struct iovec * iov, int iovcnt)
413 int rv = 0, i, total = 0;
419 vlsh = ldp_fd_to_vlsh (fd);
420 if (vlsh != VLS_INVALID_HANDLE)
422 for (i = 0; i < iovcnt; ++i)
424 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
430 if (rv < iov[i].iov_len)
434 if (rv < 0 && total == 0)
444 size = libc_readv (fd, iov, iovcnt);
451 write (int fd, const void *buf, size_t nbytes)
458 vlsh = ldp_fd_to_vlsh (fd);
459 if (vlsh != VLS_INVALID_HANDLE)
461 size = vls_write_msg (vlsh, (void *) buf, nbytes);
470 size = libc_write (fd, buf, nbytes);
477 writev (int fd, const struct iovec * iov, int iovcnt)
479 ssize_t size = 0, total = 0;
485 vlsh = ldp_fd_to_vlsh (fd);
486 if (vlsh != VLS_INVALID_HANDLE)
488 for (i = 0; i < iovcnt; ++i)
490 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
496 if (rv < iov[i].iov_len)
501 if (rv < 0 && total == 0)
511 size = libc_writev (fd, iov, iovcnt);
518 fcntl_internal (int fd, int cmd, va_list ap)
523 vlsh = ldp_fd_to_vlsh (fd);
524 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
525 if (vlsh != VLS_INVALID_HANDLE)
527 int flags = va_arg (ap, int);
530 size = sizeof (flags);
535 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
539 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
544 /* TODO handle this */
545 LDBG (0, "F_SETFD ignored flags %u", flags);
561 rv = libc_vfcntl64 (fd, cmd, ap);
563 rv = libc_vfcntl (fd, cmd, ap);
571 fcntl (int fd, int cmd, ...)
579 rv = fcntl_internal (fd, cmd, ap);
586 fcntl64 (int fd, int cmd, ...)
594 rv = fcntl_internal (fd, cmd, ap);
600 ioctl (int fd, unsigned long int cmd, ...)
610 vlsh = ldp_fd_to_vlsh (fd);
611 if (vlsh != VLS_INVALID_HANDLE)
616 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
621 u32 flags = *(va_arg (ap, int *)) ? O_NONBLOCK : 0;
622 u32 size = sizeof (flags);
624 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
625 * non-blocking, the flags should be read here and merged
628 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
644 rv = libc_vioctl (fd, cmd, ap);
652 ldp_select_init_maps (fd_set * __restrict original,
653 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
654 clib_bitmap_t ** vclb, int nfds, u32 minbits,
655 u32 n_bytes, uword * si_bits, uword * libc_bits)
657 uword si_bits_set, libc_bits_set;
661 clib_bitmap_validate (*vclb, minbits);
662 clib_bitmap_validate (*libcb, minbits);
663 clib_bitmap_validate (*resultb, minbits);
664 clib_memcpy_fast (*resultb, original, n_bytes);
665 memset (original, 0, n_bytes);
668 clib_bitmap_foreach (fd, *resultb) {
671 vlsh = ldp_fd_to_vlsh (fd);
672 if (vlsh == VLS_INVALID_HANDLE)
673 clib_bitmap_set_no_check (*libcb, fd, 1);
675 *vclb = clib_bitmap_set (*vclb, vlsh_to_session_index (vlsh), 1);
679 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
680 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
681 clib_bitmap_validate (*resultb, *si_bits);
683 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
684 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
688 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
698 clib_bitmap_foreach (si, vclb) {
699 vlsh = vls_session_index_to_vlsh (si);
700 ASSERT (vlsh != VLS_INVALID_HANDLE);
701 fd = ldp_vlsh_to_fd (vlsh);
702 if (PREDICT_FALSE (fd < 0))
715 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
723 clib_bitmap_foreach (fd, result)
724 FD_SET ((int)fd, libcb);
729 ldp_pselect (int nfds, fd_set * __restrict readfds,
730 fd_set * __restrict writefds,
731 fd_set * __restrict exceptfds,
732 const struct timespec *__restrict timeout,
733 const __sigset_t * __restrict sigmask)
735 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
736 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
737 struct timespec libc_tspec = { 0 };
738 f64 time_out, vcl_timeout = 0;
739 uword si_bits, libc_bits;
740 int rv, bits_set = 0;
748 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
749 clib_time_init (&ldpw->clib_time);
753 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
754 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
756 time_out += clib_time_now (&ldpw->clib_time);
758 /* select as fine grained sleep */
761 while (clib_time_now (&ldpw->clib_time) < time_out)
774 if (nfds <= ldp->vlsh_bit_val)
776 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
781 si_bits = libc_bits = 0;
782 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
785 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
786 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
787 &si_bits, &libc_bits);
789 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
790 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
791 minbits, n_bytes, &si_bits, &libc_bits);
793 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
794 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
795 minbits, n_bytes, &si_bits, &libc_bits);
797 if (PREDICT_FALSE (!si_bits && !libc_bits))
805 libc_tspec = timeout ? *timeout : libc_tspec;
812 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
813 vec_len (ldpw->si_rd_bitmap) *
814 sizeof (clib_bitmap_t));
816 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
817 vec_len (ldpw->si_wr_bitmap) *
818 sizeof (clib_bitmap_t));
820 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
821 vec_len (ldpw->si_ex_bitmap) *
822 sizeof (clib_bitmap_t));
824 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
825 writefds ? ldpw->wr_bitmap : NULL,
826 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
835 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
841 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
847 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
858 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
859 vec_len (ldpw->libc_rd_bitmap) *
860 sizeof (clib_bitmap_t));
862 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
863 vec_len (ldpw->libc_wr_bitmap) *
864 sizeof (clib_bitmap_t));
866 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
867 vec_len (ldpw->libc_ex_bitmap) *
868 sizeof (clib_bitmap_t));
870 rv = libc_pselect (libc_bits,
871 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
872 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
873 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
874 &libc_tspec, sigmask);
877 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
878 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
879 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
890 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
894 /* TBD: set timeout to amount of time left */
895 clib_bitmap_zero (ldpw->rd_bitmap);
896 clib_bitmap_zero (ldpw->si_rd_bitmap);
897 clib_bitmap_zero (ldpw->libc_rd_bitmap);
898 clib_bitmap_zero (ldpw->wr_bitmap);
899 clib_bitmap_zero (ldpw->si_wr_bitmap);
900 clib_bitmap_zero (ldpw->libc_wr_bitmap);
901 clib_bitmap_zero (ldpw->ex_bitmap);
902 clib_bitmap_zero (ldpw->si_ex_bitmap);
903 clib_bitmap_zero (ldpw->libc_ex_bitmap);
909 select (int nfds, fd_set * __restrict readfds,
910 fd_set * __restrict writefds,
911 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
913 struct timespec tspec;
917 tspec.tv_sec = timeout->tv_sec;
918 tspec.tv_nsec = timeout->tv_usec * 1000;
920 return ldp_pselect (nfds, readfds, writefds, exceptfds,
921 timeout ? &tspec : NULL, NULL);
926 pselect (int nfds, fd_set * __restrict readfds,
927 fd_set * __restrict writefds,
928 fd_set * __restrict exceptfds,
929 const struct timespec *__restrict timeout,
930 const __sigset_t * __restrict sigmask)
932 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
936 /* If transparent TLS mode is turned on, then ldp will load key and cert.
939 load_cert_key_pair (void)
941 char *cert_str = getenv (LDP_ENV_TLS_CERT);
942 char *key_str = getenv (LDP_ENV_TLS_KEY);
943 char cert_buf[4096], key_buf[4096];
944 int cert_size, key_size;
945 vppcom_cert_key_pair_t crypto;
949 if (!cert_str || !key_str)
951 LDBG (0, "ERROR: failed to read LDP environment %s\n",
956 fp = fopen (cert_str, "r");
959 LDBG (0, "ERROR: failed to open cert file %s \n", cert_str);
962 cert_size = fread (cert_buf, sizeof (char), sizeof (cert_buf), fp);
965 fp = fopen (key_str, "r");
968 LDBG (0, "ERROR: failed to open key file %s \n", key_str);
971 key_size = fread (key_buf, sizeof (char), sizeof (key_buf), fp);
974 crypto.cert = cert_buf;
975 crypto.key = key_buf;
976 crypto.cert_len = cert_size;
977 crypto.key_len = key_size;
978 ckp_index = vppcom_add_cert_key_pair (&crypto);
981 LDBG (0, "ERROR: failed to add cert key pair\n");
985 ldp->ckpair_index = ckp_index;
991 assign_cert_key_pair (vls_handle_t vlsh)
995 if (ldp->ckpair_index == ~0 && load_cert_key_pair () < 0)
998 ckp_len = sizeof (ldp->ckpair_index);
999 return vls_attr (vlsh, VPPCOM_ATTR_SET_CKPAIR, &ldp->ckpair_index, &ckp_len);
1003 socket (int domain, int type, int protocol)
1005 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1006 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
1011 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1012 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1015 if (ldp->transparent_tls)
1017 proto = VPPCOM_PROTO_TLS;
1020 proto = ((sock_type == SOCK_DGRAM) ?
1021 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
1023 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
1024 proto, vppcom_proto_str (proto), is_nonblocking);
1026 vlsh = vls_create (proto, is_nonblocking);
1034 if (ldp->transparent_tls)
1036 if (assign_cert_key_pair (vlsh) < 0)
1039 rv = ldp_vlsh_to_fd (vlsh);
1044 LDBG (0, "calling libc_socket");
1045 rv = libc_socket (domain, type, protocol);
1052 * Create two new sockets, of type TYPE in domain DOMAIN and using
1053 * protocol PROTOCOL, which are connected to each other, and put file
1054 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
1055 * one will be chosen automatically.
1056 * Returns 0 on success, -1 for errors.
1059 socketpair (int domain, int type, int protocol, int fds[2])
1061 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1065 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1066 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1068 LDBG (0, "LDP-TBD");
1074 LDBG (1, "calling libc_socketpair");
1075 rv = libc_socketpair (domain, type, protocol, fds);
1082 bind (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1084 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1090 vlsh = ldp_fd_to_vlsh (fd);
1091 if (vlsh != VLS_INVALID_HANDLE)
1095 switch (addr->sa_family)
1098 if (len != sizeof (struct sockaddr_in))
1100 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1106 ep.is_ip4 = VPPCOM_IS_IP4;
1107 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1108 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1112 if (len != sizeof (struct sockaddr_in6))
1114 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1120 ep.is_ip4 = VPPCOM_IS_IP6;
1121 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1122 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1126 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1127 fd, vlsh, addr->sa_family);
1128 errno = EAFNOSUPPORT;
1132 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1135 rv = vls_bind (vlsh, &ep);
1136 if (rv != VPPCOM_OK)
1144 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1145 rv = libc_bind (fd, addr, len);
1149 LDBG (1, "fd %d: returning %d", fd, rv);
1155 ldp_copy_ep_to_sockaddr (struct sockaddr *addr, socklen_t *__restrict len,
1158 int rv = 0, sa_len, copy_len;
1162 if (addr && len && ep)
1164 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1165 switch (addr->sa_family)
1168 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1169 if (*len > sizeof (struct sockaddr_in))
1170 *len = sizeof (struct sockaddr_in);
1171 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1172 copy_len = *len - sa_len;
1174 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1179 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1180 if (*len > sizeof (struct sockaddr_in6))
1181 *len = sizeof (struct sockaddr_in6);
1182 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1183 copy_len = *len - sa_len;
1185 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1186 __in6_u.__u6_addr8, ep->ip, copy_len);
1199 getsockname (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1201 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1207 vlsh = ldp_fd_to_vlsh (fd);
1208 if (vlsh != VLS_INVALID_HANDLE)
1211 u8 addr_buf[sizeof (struct in6_addr)];
1212 u32 size = sizeof (ep);
1216 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1217 if (rv != VPPCOM_OK)
1224 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1225 if (rv != VPPCOM_OK)
1234 rv = libc_getsockname (fd, _addr, len);
1241 connect (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1243 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1251 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1257 vlsh = ldp_fd_to_vlsh (fd);
1258 if (vlsh != VLS_INVALID_HANDLE)
1262 switch (addr->sa_family)
1265 if (len != sizeof (struct sockaddr_in))
1267 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1273 ep.is_ip4 = VPPCOM_IS_IP4;
1274 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1275 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1279 if (len != sizeof (struct sockaddr_in6))
1281 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1287 ep.is_ip4 = VPPCOM_IS_IP6;
1288 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1289 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1293 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1294 fd, vlsh, addr->sa_family);
1295 errno = EAFNOSUPPORT;
1299 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1302 rv = vls_connect (vlsh, &ep);
1303 if (rv != VPPCOM_OK)
1311 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1314 rv = libc_connect (fd, addr, len);
1318 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1323 getpeername (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1325 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1331 vlsh = ldp_fd_to_vlsh (fd);
1332 if (vlsh != VLS_INVALID_HANDLE)
1335 u8 addr_buf[sizeof (struct in6_addr)];
1336 u32 size = sizeof (ep);
1339 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1340 if (rv != VPPCOM_OK)
1347 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1348 if (rv != VPPCOM_OK)
1357 rv = libc_getpeername (fd, addr, len);
1364 send (int fd, const void *buf, size_t n, int flags)
1366 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1371 if (vlsh != VLS_INVALID_HANDLE)
1373 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1374 if (size < VPPCOM_OK)
1382 size = libc_send (fd, buf, n, flags);
1389 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1391 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1397 vlsh = ldp_fd_to_vlsh (out_fd);
1398 if (vlsh != VLS_INVALID_HANDLE)
1401 ssize_t results = 0;
1402 size_t n_bytes_left = len;
1403 size_t bytes_to_read;
1406 u32 flags, flags_len = sizeof (flags);
1408 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1409 if (PREDICT_FALSE (rv != VPPCOM_OK))
1411 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1412 out_fd, vlsh, rv, vppcom_retval_str (rv));
1414 vec_reset_length (ldpw->io_buffer);
1422 off_t off = lseek (in_fd, *offset, SEEK_SET);
1423 if (PREDICT_FALSE (off == -1))
1429 ASSERT (off == *offset);
1434 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1437 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %ld (%s)!",
1438 out_fd, vlsh, size, vppcom_retval_str (size));
1439 vec_reset_length (ldpw->io_buffer);
1445 bytes_to_read = size;
1446 if (bytes_to_read == 0)
1448 if (flags & O_NONBLOCK)
1457 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1458 vec_validate (ldpw->io_buffer, bytes_to_read);
1459 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1464 vec_reset_length (ldpw->io_buffer);
1471 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1474 if (size == VPPCOM_EAGAIN)
1476 if (flags & O_NONBLOCK)
1487 vec_reset_length (ldpw->io_buffer);
1496 ASSERT (n_bytes_left >= nbytes);
1497 n_bytes_left = n_bytes_left - nbytes;
1499 while (n_bytes_left > 0);
1502 vec_reset_length (ldpw->io_buffer);
1505 off_t off = lseek (in_fd, *offset, SEEK_SET);
1506 if (PREDICT_FALSE (off == -1))
1512 ASSERT (off == *offset);
1513 *offset += results + 1;
1525 size = libc_sendfile (out_fd, in_fd, offset, len);
1533 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1535 return sendfile (out_fd, in_fd, offset, len);
1539 recv (int fd, void *buf, size_t n, int flags)
1546 vlsh = ldp_fd_to_vlsh (fd);
1547 if (vlsh != VLS_INVALID_HANDLE)
1549 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1558 size = libc_recv (fd, buf, n, flags);
1565 __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
1570 return recv (fd, buf, n, flags);
1574 ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n,
1575 vppcom_endpt_tlv_t *app_tlvs, int flags,
1576 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1578 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1579 vppcom_endpt_t *ep = 0;
1582 _ep.app_tlvs = app_tlvs;
1587 switch (addr->sa_family)
1590 ep->is_ip4 = VPPCOM_IS_IP4;
1592 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1593 ep->port = (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1597 ep->is_ip4 = VPPCOM_IS_IP6;
1599 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1601 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1605 return EAFNOSUPPORT;
1609 return vls_sendto (vlsh, (void *) buf, n, flags, ep);
1613 ldp_vls_recvfrom (vls_handle_t vlsh, void *__restrict buf, size_t n, int flags,
1614 __SOCKADDR_ARG _addr, socklen_t *__restrict addr_len)
1616 u8 src_addr[sizeof (struct sockaddr_in6)];
1617 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1625 size = vls_recvfrom (vlsh, buf, n, flags, &ep);
1629 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1635 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1641 sendto (int fd, const void *buf, size_t n, int flags,
1642 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1644 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1650 vlsh = ldp_fd_to_vlsh (fd);
1651 if (vlsh != VLS_INVALID_HANDLE)
1653 size = ldp_vls_sendo (vlsh, buf, n, NULL, flags, addr, addr_len);
1662 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1669 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1670 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1677 vlsh = ldp_fd_to_vlsh (fd);
1678 if (vlsh != VLS_INVALID_HANDLE)
1680 size = ldp_vls_recvfrom (vlsh, buf, n, flags, addr, addr_len);
1689 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1696 ldp_parse_cmsg (vls_handle_t vlsh, const struct msghdr *msg,
1697 vppcom_endpt_tlv_t **app_tlvs)
1699 uint8_t *ad, *at = (uint8_t *) *app_tlvs;
1700 vppcom_endpt_tlv_t *adh;
1701 struct in_pktinfo *pi;
1702 struct cmsghdr *cmsg;
1704 cmsg = CMSG_FIRSTHDR (msg);
1706 while (cmsg != NULL)
1708 switch (cmsg->cmsg_level)
1711 switch (cmsg->cmsg_type)
1714 vec_add2 (at, adh, sizeof (*adh));
1715 adh->data_type = VCL_UDP_SEGMENT;
1716 adh->data_len = sizeof (uint16_t);
1717 vec_add2 (at, ad, sizeof (uint16_t));
1718 *(uint16_t *) ad = *(uint16_t *) CMSG_DATA (cmsg);
1721 LDBG (1, "SOL_UDP cmsg_type %u not supported", cmsg->cmsg_type);
1726 switch (cmsg->cmsg_type)
1729 vec_add2 (at, adh, sizeof (*adh));
1730 adh->data_type = VCL_IP_PKTINFO;
1731 adh->data_len = sizeof (struct in_addr);
1732 vec_add2 (at, ad, sizeof (struct in_addr));
1733 pi = (void *) CMSG_DATA (cmsg);
1734 clib_memcpy_fast (ad, &pi->ipi_spec_dst,
1735 sizeof (struct in_addr));
1738 LDBG (1, "SOL_IP cmsg_type %u not supported", cmsg->cmsg_type);
1743 LDBG (1, "cmsg_level %u not supported", cmsg->cmsg_level);
1746 cmsg = CMSG_NXTHDR ((struct msghdr *) msg, cmsg);
1748 *app_tlvs = (vppcom_endpt_tlv_t *) at;
1753 ldp_make_cmsg (vls_handle_t vlsh, struct msghdr *msg)
1755 u32 optval, optlen = sizeof (optval);
1756 struct cmsghdr *cmsg;
1758 cmsg = CMSG_FIRSTHDR (msg);
1759 memset (cmsg, 0, sizeof (*cmsg));
1761 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_IP_PKTINFO, (void *) &optval, &optlen))
1767 u8 addr_buf[sizeof (struct in_addr)];
1768 u32 size = sizeof (ep);
1772 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size))
1774 struct in_pktinfo pi = {};
1776 clib_memcpy (&pi.ipi_addr, ep.ip, sizeof (struct in_addr));
1777 cmsg->cmsg_level = SOL_IP;
1778 cmsg->cmsg_type = IP_PKTINFO;
1779 cmsg->cmsg_len = CMSG_LEN (sizeof (pi));
1780 clib_memcpy (CMSG_DATA (cmsg), &pi, sizeof (pi));
1788 sendmsg (int fd, const struct msghdr * msg, int flags)
1795 vlsh = ldp_fd_to_vlsh (fd);
1796 if (vlsh != VLS_INVALID_HANDLE)
1798 vppcom_endpt_tlv_t *app_tlvs = 0;
1799 struct iovec *iov = msg->msg_iov;
1803 ldp_parse_cmsg (vlsh, msg, &app_tlvs);
1805 for (i = 0; i < msg->msg_iovlen; ++i)
1807 rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, app_tlvs,
1808 flags, msg->msg_name, msg->msg_namelen);
1814 if (rv < iov[i].iov_len)
1819 vec_free (app_tlvs);
1821 if (rv < 0 && total == 0)
1831 size = libc_sendmsg (fd, msg, flags);
1839 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1842 const char *func_str;
1843 u32 sh = ldp_fd_to_vlsh (fd);
1847 if (sh != VLS_INVALID_HANDLE)
1849 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1855 func_str = "libc_sendmmsg";
1858 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1859 "vmessages %p, vlen %u, flags 0x%x",
1860 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1862 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1869 int errno_val = errno;
1871 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1872 "rv %d, errno = %d", getpid (), fd, fd,
1873 func_str, size, errno_val);
1877 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1878 getpid (), fd, fd, size, size);
1885 recvmsg (int fd, struct msghdr * msg, int flags)
1892 vlsh = ldp_fd_to_vlsh (fd);
1893 if (vlsh != VLS_INVALID_HANDLE)
1895 struct iovec *iov = msg->msg_iov;
1896 ssize_t max_deq, total = 0;
1899 max_deq = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
1903 for (i = 0; i < msg->msg_iovlen; i++)
1905 rv = ldp_vls_recvfrom (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
1906 (i == 0 ? msg->msg_name : NULL),
1907 (i == 0 ? &msg->msg_namelen : NULL));
1913 if (rv < iov[i].iov_len)
1916 if (total >= max_deq)
1920 if (rv < 0 && total == 0)
1927 if (msg->msg_controllen)
1928 ldp_make_cmsg (vlsh, msg);
1934 size = libc_recvmsg (fd, msg, flags);
1942 recvmmsg (int fd, struct mmsghdr *vmessages,
1943 unsigned int vlen, int flags, struct timespec *tmo)
1945 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1950 sh = ldp_fd_to_vlsh (fd);
1952 if (sh != VLS_INVALID_HANDLE)
1959 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
1960 clib_time_init (&ldpw->clib_time);
1963 time_out = (f64) tmo->tv_sec + (f64) tmo->tv_nsec / (f64) 1e9;
1964 time_out += clib_time_now (&ldpw->clib_time);
1968 time_out = (f64) ~0;
1971 while (nvecs < vlen)
1973 mh = &vmessages[nvecs];
1974 rv = recvmsg (fd, &mh->msg_hdr, flags);
1982 if (!time_out || clib_time_now (&ldpw->clib_time) >= time_out)
1988 return nvecs > 0 ? nvecs : rv;
1992 return libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1998 getsockopt (int fd, int level, int optname,
1999 void *__restrict optval, socklen_t * __restrict optlen)
2006 vlsh = ldp_fd_to_vlsh (fd);
2007 if (vlsh != VLS_INVALID_HANDLE)
2017 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
2021 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
2025 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
2029 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
2033 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
2035 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
2036 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
2037 memset (optval, 0, *optlen);
2043 case TCP_CONGESTION:
2044 *optlen = strlen ("cubic");
2045 strncpy (optval, "cubic", *optlen + 1);
2049 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
2050 "optname %d unsupported!", fd, vlsh, optname);
2057 case SO_ORIGINAL_DST:
2059 vls_attr (vlsh, VPPCOM_ATTR_GET_ORIGINAL_DST, optval, optlen);
2063 "ERROR: fd %d: getsockopt SOL_IP: vlsh %u "
2064 "optname %d unsupported!",
2073 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
2076 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
2077 "optname %d unsupported!", fd, vlsh, optname);
2085 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
2088 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
2091 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
2092 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
2095 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
2099 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
2103 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
2106 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEPORT, optval, optlen);
2109 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
2112 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_DOMAIN, optval, optlen);
2115 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
2117 case SO_BINDTODEVICE:
2121 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
2122 "optname %d unsupported!", fd, vlsh, optname);
2130 if (rv != VPPCOM_OK)
2138 rv = libc_getsockopt (fd, level, optname, optval, optlen);
2145 setsockopt (int fd, int level, int optname,
2146 const void *optval, socklen_t optlen)
2153 vlsh = ldp_fd_to_vlsh (fd);
2154 if (vlsh != VLS_INVALID_HANDLE)
2164 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
2165 (void *) optval, &optlen);
2168 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
2169 (void *) optval, &optlen);
2172 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
2173 (void *) optval, &optlen);
2176 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
2177 (void *) optval, &optlen);
2179 case TCP_CONGESTION:
2185 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
2186 "optname %d unsupported!", fd, vlsh, optname);
2194 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
2195 (void *) optval, &optlen);
2198 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
2199 "optname %d unsupported!", fd, vlsh, optname);
2207 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
2208 (void *) optval, &optlen);
2211 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
2212 (void *) optval, &optlen);
2215 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEPORT, (void *) optval,
2219 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
2220 (void *) optval, &optlen);
2226 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
2227 "optname %d unsupported!", fd, vlsh, optname);
2235 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_IP_PKTINFO, (void *) optval,
2240 "ERROR: fd %d: setsockopt SOL_IP: vlsh %u optname %d"
2250 if (rv != VPPCOM_OK)
2258 rv = libc_setsockopt (fd, level, optname, optval, optlen);
2265 listen (int fd, int n)
2272 vlsh = ldp_fd_to_vlsh (fd);
2273 if (vlsh != VLS_INVALID_HANDLE)
2275 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2277 rv = vls_listen (vlsh, n);
2278 if (rv != VPPCOM_OK)
2286 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2287 rv = libc_listen (fd, n);
2290 LDBG (1, "fd %d: returning %d", fd, rv);
2295 ldp_accept4 (int listen_fd, __SOCKADDR_ARG _addr,
2296 socklen_t *__restrict addr_len, int flags)
2298 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
2299 vls_handle_t listen_vlsh, accept_vlsh;
2304 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2305 if (listen_vlsh != VLS_INVALID_HANDLE)
2308 u8 src_addr[sizeof (struct sockaddr_in6)];
2309 memset (&ep, 0, sizeof (ep));
2312 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2313 " ep %p, flags 0x%x", listen_fd, listen_vlsh, &ep, flags);
2315 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2316 if (accept_vlsh < 0)
2318 errno = -accept_vlsh;
2323 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2324 if (rv != VPPCOM_OK)
2326 (void) vls_close (accept_vlsh);
2332 rv = ldp_vlsh_to_fd (accept_vlsh);
2338 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2339 " flags 0x%x", listen_fd, addr, addr_len, flags);
2341 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2344 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2350 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2353 return ldp_accept4 (fd, addr, addr_len, flags);
2357 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2359 return ldp_accept4 (fd, addr, addr_len, 0);
2363 shutdown (int fd, int how)
2370 vlsh = ldp_fd_to_vlsh (fd);
2371 if (vlsh != VLS_INVALID_HANDLE)
2373 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2374 rv = vls_shutdown (vlsh, how);
2378 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2379 rv = libc_shutdown (fd, how);
2386 epoll_create1 (int flags)
2388 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2394 if (ldp->vcl_needs_real_epoll || vls_use_real_epoll ())
2396 /* Make sure workers have been allocated */
2399 ldp_alloc_workers ();
2400 ldpw = ldp_worker_get_current ();
2402 rv = libc_epoll_create1 (flags);
2403 ldp->vcl_needs_real_epoll = 0;
2404 ldpw->vcl_mq_epfd = rv;
2405 LDBG (0, "created vcl epfd %u", rv);
2409 vlsh = vls_epoll_create ();
2410 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2417 rv = ldp_vlsh_to_fd (vlsh);
2419 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2424 epoll_create (int size)
2426 return epoll_create1 (0);
2430 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2432 vls_handle_t vep_vlsh, vlsh;
2437 vep_vlsh = ldp_fd_to_vlsh (epfd);
2438 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2440 /* The LDP epoll_create1 always creates VCL epfd's.
2441 * The app should never have a kernel base epoll fd unless it
2442 * was acquired outside of the LD_PRELOAD process context.
2443 * In any case, if we get one, punt it to libc_epoll_ctl.
2446 "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2448 epfd, op, fd, event ? event->events : 0);
2450 rv = libc_epoll_ctl (epfd, op, fd, event);
2454 vlsh = ldp_fd_to_vlsh (fd);
2456 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2459 if (vlsh != VLS_INVALID_HANDLE)
2462 "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2464 epfd, vep_vlsh, op, vlsh, event ? event->events : 0);
2466 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2467 if (rv != VPPCOM_OK)
2476 u32 size = sizeof (epfd);
2478 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2481 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2482 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2484 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2491 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2500 else if (PREDICT_FALSE (libc_epfd < 0))
2507 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2508 " event %p", epfd, libc_epfd, op, fd, event);
2510 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2518 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2519 int timeout, const sigset_t * sigmask)
2521 ldp_worker_ctx_t *ldpw;
2522 double time_to_wait = (double) 0, max_time;
2523 int libc_epfd, rv = 0;
2524 vls_handle_t ep_vlsh;
2528 if (PREDICT_FALSE (!events || (timeout < -1)))
2534 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2535 vls_register_vcl_worker ();
2537 ldpw = ldp_worker_get_current ();
2538 if (epfd == ldpw->vcl_mq_epfd)
2539 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2541 ep_vlsh = ldp_fd_to_vlsh (epfd);
2542 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2544 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2549 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2550 clib_time_init (&ldpw->clib_time);
2551 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2552 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2554 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2555 if (PREDICT_FALSE (libc_epfd < 0))
2562 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2563 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2564 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2567 if (!ldpw->epoll_wait_vcl)
2569 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2572 ldpw->epoll_wait_vcl = 1;
2583 ldpw->epoll_wait_vcl = 0;
2587 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2592 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2599 ldp_epoll_pwait_eventfd (int epfd, struct epoll_event *events,
2600 int maxevents, int timeout, const sigset_t * sigmask)
2602 int libc_epfd, rv = 0, num_ev, libc_num_ev, vcl_wups = 0;
2603 struct epoll_event *libc_evts;
2604 ldp_worker_ctx_t *ldpw;
2605 vls_handle_t ep_vlsh;
2609 if (PREDICT_FALSE (!events || (timeout < -1)))
2615 /* Make sure the vcl worker is valid. Could be that epoll fd was created on
2616 * one thread but it is now used on another */
2617 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2618 vls_register_vcl_worker ();
2620 ldpw = ldp_worker_get_current ();
2621 if (epfd == ldpw->vcl_mq_epfd)
2622 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2624 ep_vlsh = ldp_fd_to_vlsh (epfd);
2625 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2627 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2632 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2633 if (PREDICT_FALSE (!libc_epfd))
2635 u32 size = sizeof (epfd);
2637 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2638 "EPOLL_CLOEXEC", epfd, ep_vlsh);
2639 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2646 rv = vls_attr (ep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd, &size);
2654 if (PREDICT_FALSE (libc_epfd <= 0))
2661 if (PREDICT_FALSE (!ldpw->mq_epfd_added))
2663 struct epoll_event e = { 0 };
2665 e.data.fd = ldpw->vcl_mq_epfd;
2666 if (libc_epoll_ctl (libc_epfd, EPOLL_CTL_ADD, ldpw->vcl_mq_epfd, &e) <
2669 LDBG (0, "epfd %d, add libc mq epoll fd %d to libc epoll fd %d",
2670 epfd, ldpw->vcl_mq_epfd, libc_epfd);
2674 ldpw->mq_epfd_added = 1;
2677 /* Request to only drain unhandled to prevent libc_epoll_wait starved */
2678 rv = vls_epoll_wait (ep_vlsh, events, maxevents, -2);
2682 if (rv >= maxevents)
2686 else if (PREDICT_FALSE (rv < 0))
2695 libc_evts = &events[rv];
2697 libc_epoll_pwait (libc_epfd, libc_evts, maxevents, timeout, sigmask);
2698 if (libc_num_ev <= 0)
2700 rv = rv >= 0 ? rv : -1;
2704 for (int i = 0; i < libc_num_ev; i++)
2706 if (libc_evts[i].data.fd == ldpw->vcl_mq_epfd)
2708 /* We should remove mq epoll fd from events. */
2710 if (i != libc_num_ev)
2712 libc_evts[i].events = libc_evts[libc_num_ev].events;
2713 libc_evts[i].data.u64 = libc_evts[libc_num_ev].data.u64;
2715 num_ev = vls_epoll_wait (ep_vlsh, &libc_evts[libc_num_ev],
2716 maxevents - libc_num_ev, 0);
2717 if (PREDICT_TRUE (num_ev > 0))
2719 /* Woken up by vcl but no events generated. Accept it once */
2720 if (rv == 0 && libc_num_ev == 0 && timeout && vcl_wups++ < 1)
2733 epoll_pwait (int epfd, struct epoll_event *events,
2734 int maxevents, int timeout, const sigset_t * sigmask)
2736 if (vls_use_eventfd ())
2737 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout,
2740 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2744 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2746 if (vls_use_eventfd ())
2747 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout, NULL);
2749 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2753 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2755 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2756 int rv, i, n_revents = 0;
2761 LDBG (3, "fds %p, nfds %ld, timeout %d", fds, nfds, timeout);
2763 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2764 clib_time_init (&ldpw->clib_time);
2766 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2767 max_time += clib_time_now (&ldpw->clib_time);
2769 for (i = 0; i < nfds; i++)
2774 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2775 if (vlsh != VLS_INVALID_HANDLE)
2777 fds[i].fd = -fds[i].fd;
2778 vec_add2 (ldpw->vcl_poll, vp, 1);
2780 vp->sh = vlsh_to_sh (vlsh);
2781 vp->events = fds[i].events;
2782 #ifdef __USE_XOPEN2K
2783 if (fds[i].events & POLLRDNORM)
2784 vp->events |= POLLIN;
2785 if (fds[i].events & POLLWRNORM)
2786 vp->events |= POLLOUT;
2788 vp->revents = fds[i].revents;
2792 vec_add1 (ldpw->libc_poll, fds[i]);
2793 vec_add1 (ldpw->libc_poll_idxs, i);
2799 if (vec_len (ldpw->vcl_poll))
2801 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2812 if (vec_len (ldpw->libc_poll))
2814 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2827 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2831 vec_foreach (vp, ldpw->vcl_poll)
2833 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2834 fds[vp->fds_ndx].revents = vp->revents;
2835 #ifdef __USE_XOPEN2K
2836 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2837 (fds[vp->fds_ndx].events & POLLRDNORM))
2838 fds[vp->fds_ndx].revents |= POLLRDNORM;
2839 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2840 (fds[vp->fds_ndx].events & POLLWRNORM))
2841 fds[vp->fds_ndx].revents |= POLLWRNORM;
2844 vec_reset_length (ldpw->vcl_poll);
2846 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2848 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2850 vec_reset_length (ldpw->libc_poll_idxs);
2851 vec_reset_length (ldpw->libc_poll);
2858 ppoll (struct pollfd *fds, nfds_t nfds,
2859 const struct timespec *timeout, const sigset_t * sigmask)
2863 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2871 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2873 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2876 * This function is called when the library is loaded
2879 ldp_constructor (void)
2881 swrap_constructor ();
2882 if (ldp_init () != 0)
2884 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2888 else if (LDP_DEBUG > 0)
2889 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2893 * This function is called when the library is unloaded
2896 ldp_destructor (void)
2899 swrap_destructor ();
2904 /* Don't use clib_warning() here because that calls writev()
2905 * which will call ldp_init().
2908 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2909 __func__, __LINE__, getpid ());
2914 * fd.io coding-style-patch-verification: ON
2917 * eval: (c-set-style "gnu")