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;
66 typedef struct ldp_worker_ctx_
69 clib_time_t clib_time;
74 clib_bitmap_t *rd_bitmap;
75 clib_bitmap_t *wr_bitmap;
76 clib_bitmap_t *ex_bitmap;
77 clib_bitmap_t *si_rd_bitmap;
78 clib_bitmap_t *si_wr_bitmap;
79 clib_bitmap_t *si_ex_bitmap;
80 clib_bitmap_t *libc_rd_bitmap;
81 clib_bitmap_t *libc_wr_bitmap;
82 clib_bitmap_t *libc_ex_bitmap;
88 struct pollfd *libc_poll;
100 /* clib_bitmap_t, fd_mask and vcl_si_set are used interchangeably. Make sure
101 * they are the same size */
102 STATIC_ASSERT (sizeof (clib_bitmap_t) == sizeof (fd_mask),
103 "ldp bitmap size mismatch");
104 STATIC_ASSERT (sizeof (vcl_si_set) == sizeof (fd_mask),
105 "ldp bitmap size mismatch");
109 ldp_worker_ctx_t *workers;
111 char app_name[LDP_APP_NAME_MAX];
116 /** vcl needs next epoll_create to go to libc_epoll */
117 u8 vcl_needs_real_epoll;
120 * crypto state used only for testing
126 #define LDP_DEBUG ldp->debug
128 #define LDBG(_lvl, _fmt, _args...) \
129 if (ldp->debug > _lvl) \
131 int errno_saved = errno; \
132 fprintf (stderr, "ldp<%d>: " _fmt "\n", getpid(), ##_args); \
133 errno = errno_saved; \
136 static ldp_main_t ldp_main = {
137 .vlsh_bit_val = (1 << LDP_SID_BIT_MIN),
138 .vlsh_bit_mask = (1 << LDP_SID_BIT_MIN) - 1,
139 .debug = LDP_DEBUG_INIT,
140 .transparent_tls = 0,
144 static ldp_main_t *ldp = &ldp_main;
146 static inline ldp_worker_ctx_t *
147 ldp_worker_get_current (void)
149 return (ldp->workers + vppcom_worker_index ());
153 * RETURN: 0 on success or -1 on error.
156 ldp_set_app_name (char *app_name)
158 snprintf (ldp->app_name, LDP_APP_NAME_MAX, "%s-ldp-%d", app_name, getpid ());
164 if (ldp->app_name[0] == '\0')
165 ldp_set_app_name (program_invocation_short_name);
167 return ldp->app_name;
171 ldp_vlsh_to_fd (vls_handle_t vlsh)
173 return (vlsh + ldp->vlsh_bit_val);
176 static inline vls_handle_t
177 ldp_fd_to_vlsh (int fd)
179 if (fd < ldp->vlsh_bit_val)
180 return VLS_INVALID_HANDLE;
182 return (fd - ldp->vlsh_bit_val);
186 ldp_alloc_workers (void)
190 pool_alloc (ldp->workers, LDP_MAX_NWORKERS);
196 ldp_worker_ctx_t *ldpw;
202 ldp->vcl_needs_real_epoll = 1;
203 rv = vls_app_create (ldp_get_app_name ());
206 ldp->vcl_needs_real_epoll = 0;
207 if (rv == VPPCOM_EEXIST)
209 LDBG (2, "\nERROR: ldp_init: vppcom_app_create()"
210 " failed! rv = %d (%s)\n", rv, vppcom_retval_str (rv));
214 ldp->vcl_needs_real_epoll = 0;
215 ldp_alloc_workers ();
216 ldpw = ldp_worker_get_current ();
218 char *env_var_str = getenv (LDP_ENV_DEBUG);
222 if (sscanf (env_var_str, "%u", &tmp) != 1)
223 clib_warning ("LDP<%d>: WARNING: Invalid LDP debug level specified in"
224 " the env var " LDP_ENV_DEBUG " (%s)!", getpid (),
229 LDBG (0, "configured LDP debug level (%u) from env var "
230 LDP_ENV_DEBUG "!", ldp->debug);
234 env_var_str = getenv (LDP_ENV_APP_NAME);
237 ldp_set_app_name (env_var_str);
238 LDBG (0, "configured LDP app name (%s) from the env var "
239 LDP_ENV_APP_NAME "!", ldp->app_name);
242 env_var_str = getenv (LDP_ENV_SID_BIT);
246 if (sscanf (env_var_str, "%u", &sb) != 1)
248 LDBG (0, "WARNING: Invalid LDP sid bit specified in the env var "
249 LDP_ENV_SID_BIT " (%s)! sid bit value %d (0x%x)", env_var_str,
250 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
252 else if (sb < LDP_SID_BIT_MIN)
254 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MIN);
255 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
257 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
258 LDP_ENV_SID_BIT " (%s) is too small. Using LDP_SID_BIT_MIN"
259 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
260 LDP_SID_BIT_MIN, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
262 else if (sb > LDP_SID_BIT_MAX)
264 ldp->vlsh_bit_val = (1 << LDP_SID_BIT_MAX);
265 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
267 LDBG (0, "WARNING: LDP sid bit (%u) specified in the env var "
268 LDP_ENV_SID_BIT " (%s) is too big. Using LDP_SID_BIT_MAX"
269 " (%d)! sid bit value %d (0x%x)", sb, env_var_str,
270 LDP_SID_BIT_MAX, ldp->vlsh_bit_val, ldp->vlsh_bit_val);
274 ldp->vlsh_bit_val = (1 << sb);
275 ldp->vlsh_bit_mask = ldp->vlsh_bit_val - 1;
277 LDBG (0, "configured LDP sid bit (%u) from "
278 LDP_ENV_SID_BIT "! sid bit value %d (0x%x)", sb,
279 ldp->vlsh_bit_val, ldp->vlsh_bit_val);
282 /* Make sure there are enough bits in the fd set for vcl sessions */
283 if (ldp->vlsh_bit_val > FD_SETSIZE / 2)
285 /* Only valid for select/pselect, so just WARNING and not exit */
287 "WARNING: LDP vlsh bit value %d > FD_SETSIZE/2 %d, "
288 "select/pselect not supported now!",
289 ldp->vlsh_bit_val, FD_SETSIZE / 2);
292 env_var_str = getenv (LDP_ENV_TLS_TRANS);
295 ldp->transparent_tls = 1;
299 pool_foreach (ldpw, ldp->workers) {
300 clib_memset (&ldpw->clib_time, 0, sizeof (ldpw->clib_time));
304 LDBG (0, "LDP initialization: done!");
309 #define ldp_init_check() \
310 if (PREDICT_FALSE (!ldp->init)) \
312 if ((errno = -ldp_init ())) \
324 vlsh = ldp_fd_to_vlsh (fd);
325 if (vlsh != VLS_INVALID_HANDLE)
327 epfd = vls_attr (vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
330 LDBG (0, "fd %d: calling libc_close: epfd %u", fd, epfd);
332 rv = libc_close (epfd);
335 u32 size = sizeof (epfd);
338 (void) vls_attr (vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &epfd, &size);
341 else if (PREDICT_FALSE (epfd < 0))
348 LDBG (0, "fd %d: calling vls_close: vlsh %u", fd, vlsh);
350 rv = vls_close (vlsh);
359 LDBG (0, "fd %d: calling libc_close", fd);
360 rv = libc_close (fd);
368 read (int fd, void *buf, size_t nbytes)
375 vlsh = ldp_fd_to_vlsh (fd);
376 if (vlsh != VLS_INVALID_HANDLE)
378 size = vls_read (vlsh, buf, nbytes);
387 size = libc_read (fd, buf, nbytes);
394 readv (int fd, const struct iovec * iov, int iovcnt)
396 int rv = 0, i, total = 0;
402 vlsh = ldp_fd_to_vlsh (fd);
403 if (vlsh != VLS_INVALID_HANDLE)
405 for (i = 0; i < iovcnt; ++i)
407 rv = vls_read (vlsh, iov[i].iov_base, iov[i].iov_len);
413 if (rv < iov[i].iov_len)
417 if (rv < 0 && total == 0)
427 size = libc_readv (fd, iov, iovcnt);
434 write (int fd, const void *buf, size_t nbytes)
441 vlsh = ldp_fd_to_vlsh (fd);
442 if (vlsh != VLS_INVALID_HANDLE)
444 size = vls_write_msg (vlsh, (void *) buf, nbytes);
453 size = libc_write (fd, buf, nbytes);
460 writev (int fd, const struct iovec * iov, int iovcnt)
462 ssize_t size = 0, total = 0;
468 vlsh = ldp_fd_to_vlsh (fd);
469 if (vlsh != VLS_INVALID_HANDLE)
471 for (i = 0; i < iovcnt; ++i)
473 rv = vls_write_msg (vlsh, iov[i].iov_base, iov[i].iov_len);
479 if (rv < iov[i].iov_len)
484 if (rv < 0 && total == 0)
494 size = libc_writev (fd, iov, iovcnt);
501 fcntl_internal (int fd, int cmd, va_list ap)
506 vlsh = ldp_fd_to_vlsh (fd);
507 LDBG (0, "fd %u vlsh %d, cmd %u", fd, vlsh, cmd);
508 if (vlsh != VLS_INVALID_HANDLE)
510 int flags = va_arg (ap, int);
513 size = sizeof (flags);
518 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
522 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &size);
527 /* TODO handle this */
528 LDBG (0, "F_SETFD ignored flags %u", flags);
544 rv = libc_vfcntl64 (fd, cmd, ap);
546 rv = libc_vfcntl (fd, cmd, ap);
554 fcntl (int fd, int cmd, ...)
562 rv = fcntl_internal (fd, cmd, ap);
569 fcntl64 (int fd, int cmd, ...)
577 rv = fcntl_internal (fd, cmd, ap);
583 ioctl (int fd, unsigned long int cmd, ...)
593 vlsh = ldp_fd_to_vlsh (fd);
594 if (vlsh != VLS_INVALID_HANDLE)
599 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
604 u32 flags = va_arg (ap, int) ? O_NONBLOCK : 0;
605 u32 size = sizeof (flags);
607 /* TBD: When VPPCOM_ATTR_[GS]ET_FLAGS supports flags other than
608 * non-blocking, the flags should be read here and merged
611 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_FLAGS, &flags, &size);
627 rv = libc_vioctl (fd, cmd, ap);
635 ldp_select_init_maps (fd_set * __restrict original,
636 clib_bitmap_t ** resultb, clib_bitmap_t ** libcb,
637 clib_bitmap_t ** vclb, int nfds, u32 minbits,
638 u32 n_bytes, uword * si_bits, uword * libc_bits)
640 uword si_bits_set, libc_bits_set;
644 clib_bitmap_validate (*vclb, minbits);
645 clib_bitmap_validate (*libcb, minbits);
646 clib_bitmap_validate (*resultb, minbits);
647 clib_memcpy_fast (*resultb, original, n_bytes);
648 memset (original, 0, n_bytes);
651 clib_bitmap_foreach (fd, *resultb) {
654 vlsh = ldp_fd_to_vlsh (fd);
655 if (vlsh == VLS_INVALID_HANDLE)
656 clib_bitmap_set_no_check (*libcb, fd, 1);
658 *vclb = clib_bitmap_set (*vclb, vlsh_to_session_index (vlsh), 1);
662 si_bits_set = clib_bitmap_last_set (*vclb) + 1;
663 *si_bits = (si_bits_set > *si_bits) ? si_bits_set : *si_bits;
664 clib_bitmap_validate (*resultb, *si_bits);
666 libc_bits_set = clib_bitmap_last_set (*libcb) + 1;
667 *libc_bits = (libc_bits_set > *libc_bits) ? libc_bits_set : *libc_bits;
671 ldp_select_vcl_map_to_libc (clib_bitmap_t * vclb, fd_set * __restrict libcb)
681 clib_bitmap_foreach (si, vclb) {
682 vlsh = vls_session_index_to_vlsh (si);
683 ASSERT (vlsh != VLS_INVALID_HANDLE);
684 fd = ldp_vlsh_to_fd (vlsh);
685 if (PREDICT_FALSE (fd < 0))
698 ldp_select_libc_map_merge (clib_bitmap_t * result, fd_set * __restrict libcb)
706 clib_bitmap_foreach (fd, result)
707 FD_SET ((int)fd, libcb);
712 ldp_pselect (int nfds, fd_set * __restrict readfds,
713 fd_set * __restrict writefds,
714 fd_set * __restrict exceptfds,
715 const struct timespec *__restrict timeout,
716 const __sigset_t * __restrict sigmask)
718 u32 minbits = clib_max (nfds, BITS (uword)), n_bytes;
719 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
720 struct timespec libc_tspec = { 0 };
721 f64 time_out, vcl_timeout = 0;
722 uword si_bits, libc_bits;
723 int rv, bits_set = 0;
731 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
732 clib_time_init (&ldpw->clib_time);
736 time_out = (timeout->tv_sec == 0 && timeout->tv_nsec == 0) ?
737 (f64) 0 : (f64) timeout->tv_sec + (f64) timeout->tv_nsec / (f64) 1e9;
739 time_out += clib_time_now (&ldpw->clib_time);
741 /* select as fine grained sleep */
744 while (clib_time_now (&ldpw->clib_time) < time_out)
757 if (nfds <= ldp->vlsh_bit_val)
759 rv = libc_pselect (nfds, readfds, writefds, exceptfds,
764 si_bits = libc_bits = 0;
765 n_bytes = nfds / 8 + ((nfds % 8) ? 1 : 0);
768 ldp_select_init_maps (readfds, &ldpw->rd_bitmap, &ldpw->libc_rd_bitmap,
769 &ldpw->si_rd_bitmap, nfds, minbits, n_bytes,
770 &si_bits, &libc_bits);
772 ldp_select_init_maps (writefds, &ldpw->wr_bitmap,
773 &ldpw->libc_wr_bitmap, &ldpw->si_wr_bitmap, nfds,
774 minbits, n_bytes, &si_bits, &libc_bits);
776 ldp_select_init_maps (exceptfds, &ldpw->ex_bitmap,
777 &ldpw->libc_ex_bitmap, &ldpw->si_ex_bitmap, nfds,
778 minbits, n_bytes, &si_bits, &libc_bits);
780 if (PREDICT_FALSE (!si_bits && !libc_bits))
788 libc_tspec = timeout ? *timeout : libc_tspec;
795 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->si_rd_bitmap,
796 vec_len (ldpw->si_rd_bitmap) *
797 sizeof (clib_bitmap_t));
799 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->si_wr_bitmap,
800 vec_len (ldpw->si_wr_bitmap) *
801 sizeof (clib_bitmap_t));
803 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->si_ex_bitmap,
804 vec_len (ldpw->si_ex_bitmap) *
805 sizeof (clib_bitmap_t));
807 rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
808 writefds ? ldpw->wr_bitmap : NULL,
809 exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
818 if (ldp_select_vcl_map_to_libc (ldpw->rd_bitmap, readfds))
824 if (ldp_select_vcl_map_to_libc (ldpw->wr_bitmap, writefds))
830 if (ldp_select_vcl_map_to_libc (ldpw->ex_bitmap, exceptfds))
841 clib_memcpy_fast (ldpw->rd_bitmap, ldpw->libc_rd_bitmap,
842 vec_len (ldpw->libc_rd_bitmap) *
843 sizeof (clib_bitmap_t));
845 clib_memcpy_fast (ldpw->wr_bitmap, ldpw->libc_wr_bitmap,
846 vec_len (ldpw->libc_wr_bitmap) *
847 sizeof (clib_bitmap_t));
849 clib_memcpy_fast (ldpw->ex_bitmap, ldpw->libc_ex_bitmap,
850 vec_len (ldpw->libc_ex_bitmap) *
851 sizeof (clib_bitmap_t));
853 rv = libc_pselect (libc_bits,
854 readfds ? (fd_set *) ldpw->rd_bitmap : NULL,
855 writefds ? (fd_set *) ldpw->wr_bitmap : NULL,
856 exceptfds ? (fd_set *) ldpw->ex_bitmap : NULL,
857 &libc_tspec, sigmask);
860 ldp_select_libc_map_merge (ldpw->rd_bitmap, readfds);
861 ldp_select_libc_map_merge (ldpw->wr_bitmap, writefds);
862 ldp_select_libc_map_merge (ldpw->ex_bitmap, exceptfds);
873 while ((time_out == -1) || (clib_time_now (&ldpw->clib_time) < time_out));
877 /* TBD: set timeout to amount of time left */
878 clib_bitmap_zero (ldpw->rd_bitmap);
879 clib_bitmap_zero (ldpw->si_rd_bitmap);
880 clib_bitmap_zero (ldpw->libc_rd_bitmap);
881 clib_bitmap_zero (ldpw->wr_bitmap);
882 clib_bitmap_zero (ldpw->si_wr_bitmap);
883 clib_bitmap_zero (ldpw->libc_wr_bitmap);
884 clib_bitmap_zero (ldpw->ex_bitmap);
885 clib_bitmap_zero (ldpw->si_ex_bitmap);
886 clib_bitmap_zero (ldpw->libc_ex_bitmap);
892 select (int nfds, fd_set * __restrict readfds,
893 fd_set * __restrict writefds,
894 fd_set * __restrict exceptfds, struct timeval *__restrict timeout)
896 struct timespec tspec;
900 tspec.tv_sec = timeout->tv_sec;
901 tspec.tv_nsec = timeout->tv_usec * 1000;
903 return ldp_pselect (nfds, readfds, writefds, exceptfds,
904 timeout ? &tspec : NULL, NULL);
909 pselect (int nfds, fd_set * __restrict readfds,
910 fd_set * __restrict writefds,
911 fd_set * __restrict exceptfds,
912 const struct timespec *__restrict timeout,
913 const __sigset_t * __restrict sigmask)
915 return ldp_pselect (nfds, readfds, writefds, exceptfds, timeout, 0);
919 /* If transparent TLS mode is turned on, then ldp will load key and cert.
922 load_cert_key_pair (void)
924 char *cert_str = getenv (LDP_ENV_TLS_CERT);
925 char *key_str = getenv (LDP_ENV_TLS_KEY);
926 char cert_buf[4096], key_buf[4096];
927 int cert_size, key_size;
928 vppcom_cert_key_pair_t crypto;
932 if (!cert_str || !key_str)
934 LDBG (0, "ERROR: failed to read LDP environment %s\n",
939 fp = fopen (cert_str, "r");
942 LDBG (0, "ERROR: failed to open cert file %s \n", cert_str);
945 cert_size = fread (cert_buf, sizeof (char), sizeof (cert_buf), fp);
948 fp = fopen (key_str, "r");
951 LDBG (0, "ERROR: failed to open key file %s \n", key_str);
954 key_size = fread (key_buf, sizeof (char), sizeof (key_buf), fp);
957 crypto.cert = cert_buf;
958 crypto.key = key_buf;
959 crypto.cert_len = cert_size;
960 crypto.key_len = key_size;
961 ckp_index = vppcom_add_cert_key_pair (&crypto);
964 LDBG (0, "ERROR: failed to add cert key pair\n");
968 ldp->ckpair_index = ckp_index;
974 assign_cert_key_pair (vls_handle_t vlsh)
978 if (ldp->ckpair_index == ~0 && load_cert_key_pair () < 0)
981 ckp_len = sizeof (ldp->ckpair_index);
982 return vls_attr (vlsh, VPPCOM_ATTR_SET_CKPAIR, &ldp->ckpair_index, &ckp_len);
986 socket (int domain, int type, int protocol)
988 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
989 u8 is_nonblocking = type & SOCK_NONBLOCK ? 1 : 0;
994 if (((domain == AF_INET) || (domain == AF_INET6)) &&
995 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
998 if (ldp->transparent_tls)
1000 proto = VPPCOM_PROTO_TLS;
1003 proto = ((sock_type == SOCK_DGRAM) ?
1004 VPPCOM_PROTO_UDP : VPPCOM_PROTO_TCP);
1006 LDBG (0, "calling vls_create: proto %u (%s), is_nonblocking %u",
1007 proto, vppcom_proto_str (proto), is_nonblocking);
1009 vlsh = vls_create (proto, is_nonblocking);
1017 if (ldp->transparent_tls)
1019 if (assign_cert_key_pair (vlsh) < 0)
1022 rv = ldp_vlsh_to_fd (vlsh);
1027 LDBG (0, "calling libc_socket");
1028 rv = libc_socket (domain, type, protocol);
1035 * Create two new sockets, of type TYPE in domain DOMAIN and using
1036 * protocol PROTOCOL, which are connected to each other, and put file
1037 * descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero,
1038 * one will be chosen automatically.
1039 * Returns 0 on success, -1 for errors.
1042 socketpair (int domain, int type, int protocol, int fds[2])
1044 int rv, sock_type = type & ~(SOCK_CLOEXEC | SOCK_NONBLOCK);
1048 if (((domain == AF_INET) || (domain == AF_INET6)) &&
1049 ((sock_type == SOCK_STREAM) || (sock_type == SOCK_DGRAM)))
1051 LDBG (0, "LDP-TBD");
1057 LDBG (1, "calling libc_socketpair");
1058 rv = libc_socketpair (domain, type, protocol, fds);
1065 bind (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1067 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1073 vlsh = ldp_fd_to_vlsh (fd);
1074 if (vlsh != VLS_INVALID_HANDLE)
1078 switch (addr->sa_family)
1081 if (len != sizeof (struct sockaddr_in))
1083 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET addr len %u!",
1089 ep.is_ip4 = VPPCOM_IS_IP4;
1090 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1091 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1095 if (len != sizeof (struct sockaddr_in6))
1097 LDBG (0, "ERROR: fd %d: vlsh %u: Invalid AF_INET6 addr len %u!",
1103 ep.is_ip4 = VPPCOM_IS_IP6;
1104 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1105 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1109 LDBG (0, "ERROR: fd %d: vlsh %u: Unsupported address family %u!",
1110 fd, vlsh, addr->sa_family);
1111 errno = EAFNOSUPPORT;
1115 LDBG (0, "fd %d: calling vls_bind: vlsh %u, addr %p, len %u", fd, vlsh,
1118 rv = vls_bind (vlsh, &ep);
1119 if (rv != VPPCOM_OK)
1127 LDBG (0, "fd %d: calling libc_bind: addr %p, len %u", fd, addr, len);
1128 rv = libc_bind (fd, addr, len);
1132 LDBG (1, "fd %d: returning %d", fd, rv);
1138 ldp_copy_ep_to_sockaddr (struct sockaddr *addr, socklen_t *__restrict len,
1141 int rv = 0, sa_len, copy_len;
1145 if (addr && len && ep)
1147 addr->sa_family = (ep->is_ip4 == VPPCOM_IS_IP4) ? AF_INET : AF_INET6;
1148 switch (addr->sa_family)
1151 ((struct sockaddr_in *) addr)->sin_port = ep->port;
1152 if (*len > sizeof (struct sockaddr_in))
1153 *len = sizeof (struct sockaddr_in);
1154 sa_len = sizeof (struct sockaddr_in) - sizeof (struct in_addr);
1155 copy_len = *len - sa_len;
1157 memcpy (&((struct sockaddr_in *) addr)->sin_addr, ep->ip,
1162 ((struct sockaddr_in6 *) addr)->sin6_port = ep->port;
1163 if (*len > sizeof (struct sockaddr_in6))
1164 *len = sizeof (struct sockaddr_in6);
1165 sa_len = sizeof (struct sockaddr_in6) - sizeof (struct in6_addr);
1166 copy_len = *len - sa_len;
1168 memcpy (((struct sockaddr_in6 *) addr)->sin6_addr.
1169 __in6_u.__u6_addr8, ep->ip, copy_len);
1182 getsockname (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1184 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1190 vlsh = ldp_fd_to_vlsh (fd);
1191 if (vlsh != VLS_INVALID_HANDLE)
1194 u8 addr_buf[sizeof (struct in6_addr)];
1195 u32 size = sizeof (ep);
1199 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size);
1200 if (rv != VPPCOM_OK)
1207 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1208 if (rv != VPPCOM_OK)
1217 rv = libc_getsockname (fd, _addr, len);
1224 connect (int fd, __CONST_SOCKADDR_ARG _addr, socklen_t len)
1226 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1234 LDBG (0, "ERROR: fd %d: NULL addr, len %u", fd, len);
1240 vlsh = ldp_fd_to_vlsh (fd);
1241 if (vlsh != VLS_INVALID_HANDLE)
1245 switch (addr->sa_family)
1248 if (len != sizeof (struct sockaddr_in))
1250 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET addr len %u!",
1256 ep.is_ip4 = VPPCOM_IS_IP4;
1257 ep.ip = (u8 *) & ((const struct sockaddr_in *) addr)->sin_addr;
1258 ep.port = (u16) ((const struct sockaddr_in *) addr)->sin_port;
1262 if (len != sizeof (struct sockaddr_in6))
1264 LDBG (0, "fd %d: ERROR vlsh %u: Invalid AF_INET6 addr len %u!",
1270 ep.is_ip4 = VPPCOM_IS_IP6;
1271 ep.ip = (u8 *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1272 ep.port = (u16) ((const struct sockaddr_in6 *) addr)->sin6_port;
1276 LDBG (0, "fd %d: ERROR vlsh %u: Unsupported address family %u!",
1277 fd, vlsh, addr->sa_family);
1278 errno = EAFNOSUPPORT;
1282 LDBG (0, "fd %d: calling vls_connect(): vlsh %u addr %p len %u", fd,
1285 rv = vls_connect (vlsh, &ep);
1286 if (rv != VPPCOM_OK)
1294 LDBG (0, "fd %d: calling libc_connect(): addr %p, len %u",
1297 rv = libc_connect (fd, addr, len);
1301 LDBG (1, "fd %d: returning %d (0x%x)", fd, rv, rv);
1306 getpeername (int fd, __SOCKADDR_ARG _addr, socklen_t *__restrict len)
1308 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1314 vlsh = ldp_fd_to_vlsh (fd);
1315 if (vlsh != VLS_INVALID_HANDLE)
1318 u8 addr_buf[sizeof (struct in6_addr)];
1319 u32 size = sizeof (ep);
1322 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PEER_ADDR, &ep, &size);
1323 if (rv != VPPCOM_OK)
1330 rv = ldp_copy_ep_to_sockaddr (addr, len, &ep);
1331 if (rv != VPPCOM_OK)
1340 rv = libc_getpeername (fd, addr, len);
1347 send (int fd, const void *buf, size_t n, int flags)
1349 vls_handle_t vlsh = ldp_fd_to_vlsh (fd);
1354 if (vlsh != VLS_INVALID_HANDLE)
1356 size = vls_sendto (vlsh, (void *) buf, n, flags, NULL);
1357 if (size < VPPCOM_OK)
1365 size = libc_send (fd, buf, n, flags);
1372 sendfile (int out_fd, int in_fd, off_t * offset, size_t len)
1374 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1380 vlsh = ldp_fd_to_vlsh (out_fd);
1381 if (vlsh != VLS_INVALID_HANDLE)
1384 ssize_t results = 0;
1385 size_t n_bytes_left = len;
1386 size_t bytes_to_read;
1389 u32 flags, flags_len = sizeof (flags);
1391 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_FLAGS, &flags, &flags_len);
1392 if (PREDICT_FALSE (rv != VPPCOM_OK))
1394 LDBG (0, "ERROR: out fd %d: vls_attr: vlsh %u, returned %d (%s)!",
1395 out_fd, vlsh, rv, vppcom_retval_str (rv));
1397 vec_reset_length (ldpw->io_buffer);
1405 off_t off = lseek (in_fd, *offset, SEEK_SET);
1406 if (PREDICT_FALSE (off == -1))
1412 ASSERT (off == *offset);
1417 size = vls_attr (vlsh, VPPCOM_ATTR_GET_NWRITE, 0, 0);
1420 LDBG (0, "ERROR: fd %d: vls_attr: vlsh %u returned %ld (%s)!",
1421 out_fd, vlsh, size, vppcom_retval_str (size));
1422 vec_reset_length (ldpw->io_buffer);
1428 bytes_to_read = size;
1429 if (bytes_to_read == 0)
1431 if (flags & O_NONBLOCK)
1440 bytes_to_read = clib_min (n_bytes_left, bytes_to_read);
1441 vec_validate (ldpw->io_buffer, bytes_to_read);
1442 nbytes = libc_read (in_fd, ldpw->io_buffer, bytes_to_read);
1447 vec_reset_length (ldpw->io_buffer);
1454 size = vls_write (vlsh, ldpw->io_buffer, nbytes);
1457 if (size == VPPCOM_EAGAIN)
1459 if (flags & O_NONBLOCK)
1470 vec_reset_length (ldpw->io_buffer);
1479 ASSERT (n_bytes_left >= nbytes);
1480 n_bytes_left = n_bytes_left - nbytes;
1482 while (n_bytes_left > 0);
1485 vec_reset_length (ldpw->io_buffer);
1488 off_t off = lseek (in_fd, *offset, SEEK_SET);
1489 if (PREDICT_FALSE (off == -1))
1495 ASSERT (off == *offset);
1496 *offset += results + 1;
1508 size = libc_sendfile (out_fd, in_fd, offset, len);
1516 sendfile64 (int out_fd, int in_fd, off_t * offset, size_t len)
1518 return sendfile (out_fd, in_fd, offset, len);
1522 recv (int fd, void *buf, size_t n, int flags)
1529 vlsh = ldp_fd_to_vlsh (fd);
1530 if (vlsh != VLS_INVALID_HANDLE)
1532 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1541 size = libc_recv (fd, buf, n, flags);
1548 __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags)
1553 return recv (fd, buf, n, flags);
1557 ldp_vls_sendo (vls_handle_t vlsh, const void *buf, size_t n,
1558 vppcom_endpt_tlv_t *app_tlvs, int flags,
1559 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1561 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1562 vppcom_endpt_t *ep = 0;
1565 _ep.app_tlvs = app_tlvs;
1570 switch (addr->sa_family)
1573 ep->is_ip4 = VPPCOM_IS_IP4;
1575 (uint8_t *) & ((const struct sockaddr_in *) addr)->sin_addr;
1576 ep->port = (uint16_t) ((const struct sockaddr_in *) addr)->sin_port;
1580 ep->is_ip4 = VPPCOM_IS_IP6;
1582 (uint8_t *) & ((const struct sockaddr_in6 *) addr)->sin6_addr;
1584 (uint16_t) ((const struct sockaddr_in6 *) addr)->sin6_port;
1588 return EAFNOSUPPORT;
1592 return vls_sendto (vlsh, (void *) buf, n, flags, ep);
1596 ldp_vls_recvfrom (vls_handle_t vlsh, void *__restrict buf, size_t n, int flags,
1597 __SOCKADDR_ARG _addr, socklen_t *__restrict addr_len)
1599 u8 src_addr[sizeof (struct sockaddr_in6)];
1600 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1608 size = vls_recvfrom (vlsh, buf, n, flags, &ep);
1612 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
1618 size = vls_recvfrom (vlsh, buf, n, flags, NULL);
1624 sendto (int fd, const void *buf, size_t n, int flags,
1625 __CONST_SOCKADDR_ARG _addr, socklen_t addr_len)
1627 const struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
1633 vlsh = ldp_fd_to_vlsh (fd);
1634 if (vlsh != VLS_INVALID_HANDLE)
1636 size = ldp_vls_sendo (vlsh, buf, n, NULL, flags, addr, addr_len);
1645 size = libc_sendto (fd, buf, n, flags, addr, addr_len);
1652 recvfrom (int fd, void *__restrict buf, size_t n, int flags,
1653 __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
1660 vlsh = ldp_fd_to_vlsh (fd);
1661 if (vlsh != VLS_INVALID_HANDLE)
1663 size = ldp_vls_recvfrom (vlsh, buf, n, flags, addr, addr_len);
1672 size = libc_recvfrom (fd, buf, n, flags, addr, addr_len);
1679 ldp_parse_cmsg (vls_handle_t vlsh, const struct msghdr *msg,
1680 vppcom_endpt_tlv_t **app_tlvs)
1682 uint8_t *ad, *at = (uint8_t *) *app_tlvs;
1683 vppcom_endpt_tlv_t *adh;
1684 struct in_pktinfo *pi;
1685 struct cmsghdr *cmsg;
1687 cmsg = CMSG_FIRSTHDR (msg);
1689 while (cmsg != NULL)
1691 switch (cmsg->cmsg_level)
1694 switch (cmsg->cmsg_type)
1697 vec_add2 (at, adh, sizeof (*adh));
1698 adh->data_type = VCL_UDP_SEGMENT;
1699 adh->data_len = sizeof (uint16_t);
1700 vec_add2 (at, ad, sizeof (uint16_t));
1701 *(uint16_t *) ad = *(uint16_t *) CMSG_DATA (cmsg);
1704 LDBG (1, "SOL_UDP cmsg_type %u not supported", cmsg->cmsg_type);
1709 switch (cmsg->cmsg_type)
1712 vec_add2 (at, adh, sizeof (*adh));
1713 adh->data_type = VCL_IP_PKTINFO;
1714 adh->data_len = sizeof (struct in_addr);
1715 vec_add2 (at, ad, sizeof (struct in_addr));
1716 pi = (void *) CMSG_DATA (cmsg);
1717 clib_memcpy_fast (ad, &pi->ipi_spec_dst,
1718 sizeof (struct in_addr));
1721 LDBG (1, "SOL_IP cmsg_type %u not supported", cmsg->cmsg_type);
1726 LDBG (1, "cmsg_level %u not supported", cmsg->cmsg_level);
1729 cmsg = CMSG_NXTHDR ((struct msghdr *) msg, cmsg);
1731 *app_tlvs = (vppcom_endpt_tlv_t *) at;
1736 ldp_make_cmsg (vls_handle_t vlsh, struct msghdr *msg)
1738 u32 optval, optlen = sizeof (optval);
1739 struct cmsghdr *cmsg;
1741 cmsg = CMSG_FIRSTHDR (msg);
1743 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_IP_PKTINFO, (void *) &optval, &optlen))
1749 u8 addr_buf[sizeof (struct in_addr)];
1750 u32 size = sizeof (ep);
1754 if (!vls_attr (vlsh, VPPCOM_ATTR_GET_LCL_ADDR, &ep, &size))
1756 struct in_pktinfo pi = {};
1758 clib_memcpy (&pi.ipi_addr, ep.ip, sizeof (struct in_addr));
1759 cmsg->cmsg_level = SOL_IP;
1760 cmsg->cmsg_type = IP_PKTINFO;
1761 cmsg->cmsg_len = CMSG_LEN (sizeof (pi));
1762 clib_memcpy (CMSG_DATA (cmsg), &pi, sizeof (pi));
1770 sendmsg (int fd, const struct msghdr * msg, int flags)
1777 vlsh = ldp_fd_to_vlsh (fd);
1778 if (vlsh != VLS_INVALID_HANDLE)
1780 vppcom_endpt_tlv_t *app_tlvs = 0;
1781 struct iovec *iov = msg->msg_iov;
1785 ldp_parse_cmsg (vlsh, msg, &app_tlvs);
1787 for (i = 0; i < msg->msg_iovlen; ++i)
1789 rv = ldp_vls_sendo (vlsh, iov[i].iov_base, iov[i].iov_len, app_tlvs,
1790 flags, msg->msg_name, msg->msg_namelen);
1796 if (rv < iov[i].iov_len)
1801 vec_free (app_tlvs);
1803 if (rv < 0 && total == 0)
1813 size = libc_sendmsg (fd, msg, flags);
1821 sendmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags)
1824 const char *func_str;
1825 u32 sh = ldp_fd_to_vlsh (fd);
1829 if (sh != VLS_INVALID_HANDLE)
1831 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
1837 func_str = "libc_sendmmsg";
1840 clib_warning ("LDP<%d>: fd %d (0x%x): calling %s(): "
1841 "vmessages %p, vlen %u, flags 0x%x",
1842 getpid (), fd, fd, func_str, vmessages, vlen, flags);
1844 size = libc_sendmmsg (fd, vmessages, vlen, flags);
1851 int errno_val = errno;
1853 clib_warning ("LDP<%d>: ERROR: fd %d (0x%x): %s() failed! "
1854 "rv %d, errno = %d", getpid (), fd, fd,
1855 func_str, size, errno_val);
1859 clib_warning ("LDP<%d>: fd %d (0x%x): returning %d (0x%x)",
1860 getpid (), fd, fd, size, size);
1867 recvmsg (int fd, struct msghdr * msg, int flags)
1874 vlsh = ldp_fd_to_vlsh (fd);
1875 if (vlsh != VLS_INVALID_HANDLE)
1877 struct iovec *iov = msg->msg_iov;
1878 ssize_t max_deq, total = 0;
1881 max_deq = vls_attr (vlsh, VPPCOM_ATTR_GET_NREAD, 0, 0);
1885 for (i = 0; i < msg->msg_iovlen; i++)
1887 rv = ldp_vls_recvfrom (vlsh, iov[i].iov_base, iov[i].iov_len, flags,
1888 (i == 0 ? msg->msg_name : NULL),
1889 (i == 0 ? &msg->msg_namelen : NULL));
1895 if (rv < iov[i].iov_len)
1898 if (total >= max_deq)
1902 if (rv < 0 && total == 0)
1909 if (msg->msg_controllen)
1910 ldp_make_cmsg (vlsh, msg);
1916 size = libc_recvmsg (fd, msg, flags);
1924 recvmmsg (int fd, struct mmsghdr *vmessages,
1925 unsigned int vlen, int flags, struct timespec *tmo)
1927 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
1932 sh = ldp_fd_to_vlsh (fd);
1934 if (sh != VLS_INVALID_HANDLE)
1941 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
1942 clib_time_init (&ldpw->clib_time);
1945 time_out = (f64) tmo->tv_sec + (f64) tmo->tv_nsec / (f64) 1e9;
1946 time_out += clib_time_now (&ldpw->clib_time);
1950 time_out = (f64) ~0;
1953 while (nvecs < vlen)
1955 mh = &vmessages[nvecs];
1956 rv = recvmsg (fd, &mh->msg_hdr, flags);
1964 if (!time_out || clib_time_now (&ldpw->clib_time) >= time_out)
1970 return nvecs > 0 ? nvecs : rv;
1974 return libc_recvmmsg (fd, vmessages, vlen, flags, tmo);
1980 getsockopt (int fd, int level, int optname,
1981 void *__restrict optval, socklen_t * __restrict optlen)
1988 vlsh = ldp_fd_to_vlsh (fd);
1989 if (vlsh != VLS_INVALID_HANDLE)
1999 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_NODELAY,
2003 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_USER_MSS,
2007 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPIDLE,
2011 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TCP_KEEPINTVL,
2015 if (optval && optlen && (*optlen == sizeof (struct tcp_info)))
2017 LDBG (1, "fd %d: vlsh %u SOL_TCP, TCP_INFO, optval %p, "
2018 "optlen %d: #LDP-NOP#", fd, vlsh, optval, *optlen);
2019 memset (optval, 0, *optlen);
2025 case TCP_CONGESTION:
2026 *optlen = strlen ("cubic");
2027 strncpy (optval, "cubic", *optlen + 1);
2031 LDBG (0, "ERROR: fd %d: getsockopt SOL_TCP: sid %u, "
2032 "optname %d unsupported!", fd, vlsh, optname);
2040 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_V6ONLY, optval, optlen);
2043 LDBG (0, "ERROR: fd %d: getsockopt SOL_IPV6: vlsh %u "
2044 "optname %d unsupported!", fd, vlsh, optname);
2052 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_LISTEN, optval, optlen);
2055 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_KEEPALIVE, optval, optlen);
2058 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_PROTOCOL, optval, optlen);
2059 *(int *) optval = *(int *) optval ? SOCK_DGRAM : SOCK_STREAM;
2062 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_TX_FIFO_LEN,
2066 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_RX_FIFO_LEN,
2070 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEADDR, optval, optlen);
2073 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_REUSEPORT, optval, optlen);
2076 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_BROADCAST, optval, optlen);
2079 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_DOMAIN, optval, optlen);
2082 rv = vls_attr (vlsh, VPPCOM_ATTR_GET_ERROR, optval, optlen);
2084 case SO_BINDTODEVICE:
2088 LDBG (0, "ERROR: fd %d: getsockopt SOL_SOCKET: vlsh %u "
2089 "optname %d unsupported!", fd, vlsh, optname);
2097 if (rv != VPPCOM_OK)
2105 rv = libc_getsockopt (fd, level, optname, optval, optlen);
2112 setsockopt (int fd, int level, int optname,
2113 const void *optval, socklen_t optlen)
2120 vlsh = ldp_fd_to_vlsh (fd);
2121 if (vlsh != VLS_INVALID_HANDLE)
2131 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_NODELAY,
2132 (void *) optval, &optlen);
2135 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_USER_MSS,
2136 (void *) optval, &optlen);
2139 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPIDLE,
2140 (void *) optval, &optlen);
2143 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_TCP_KEEPINTVL,
2144 (void *) optval, &optlen);
2146 case TCP_CONGESTION:
2152 LDBG (0, "ERROR: fd %d: setsockopt() SOL_TCP: vlsh %u"
2153 "optname %d unsupported!", fd, vlsh, optname);
2161 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_V6ONLY,
2162 (void *) optval, &optlen);
2165 LDBG (0, "ERROR: fd %d: setsockopt SOL_IPV6: vlsh %u"
2166 "optname %d unsupported!", fd, vlsh, optname);
2174 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_KEEPALIVE,
2175 (void *) optval, &optlen);
2178 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEADDR,
2179 (void *) optval, &optlen);
2182 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_REUSEPORT, (void *) optval,
2186 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_BROADCAST,
2187 (void *) optval, &optlen);
2193 LDBG (0, "ERROR: fd %d: setsockopt SOL_SOCKET: vlsh %u "
2194 "optname %d unsupported!", fd, vlsh, optname);
2202 rv = vls_attr (vlsh, VPPCOM_ATTR_SET_IP_PKTINFO, (void *) optval,
2207 "ERROR: fd %d: setsockopt SOL_IP: vlsh %u optname %d"
2217 if (rv != VPPCOM_OK)
2225 rv = libc_setsockopt (fd, level, optname, optval, optlen);
2232 listen (int fd, int n)
2239 vlsh = ldp_fd_to_vlsh (fd);
2240 if (vlsh != VLS_INVALID_HANDLE)
2242 LDBG (0, "fd %d: calling vls_listen: vlsh %u, n %d", fd, vlsh, n);
2244 rv = vls_listen (vlsh, n);
2245 if (rv != VPPCOM_OK)
2253 LDBG (0, "fd %d: calling libc_listen(): n %d", fd, n);
2254 rv = libc_listen (fd, n);
2257 LDBG (1, "fd %d: returning %d", fd, rv);
2262 ldp_accept4 (int listen_fd, __SOCKADDR_ARG _addr,
2263 socklen_t *__restrict addr_len, int flags)
2265 struct sockaddr *addr = SOCKADDR_GET_SA (_addr);
2266 vls_handle_t listen_vlsh, accept_vlsh;
2271 listen_vlsh = ldp_fd_to_vlsh (listen_fd);
2272 if (listen_vlsh != VLS_INVALID_HANDLE)
2275 u8 src_addr[sizeof (struct sockaddr_in6)];
2276 memset (&ep, 0, sizeof (ep));
2279 LDBG (0, "listen fd %d: calling vppcom_session_accept: listen sid %u,"
2280 " ep %p, flags 0x%x", listen_fd, listen_vlsh, &ep, flags);
2282 accept_vlsh = vls_accept (listen_vlsh, &ep, flags);
2283 if (accept_vlsh < 0)
2285 errno = -accept_vlsh;
2290 rv = ldp_copy_ep_to_sockaddr (addr, addr_len, &ep);
2291 if (rv != VPPCOM_OK)
2293 (void) vls_close (accept_vlsh);
2299 rv = ldp_vlsh_to_fd (accept_vlsh);
2305 LDBG (0, "listen fd %d: calling libc_accept4(): addr %p, addr_len %p,"
2306 " flags 0x%x", listen_fd, addr, addr_len, flags);
2308 rv = libc_accept4 (listen_fd, addr, addr_len, flags);
2311 LDBG (1, "listen fd %d: accept returning %d", listen_fd, rv);
2317 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len,
2320 return ldp_accept4 (fd, addr, addr_len, flags);
2324 accept (int fd, __SOCKADDR_ARG addr, socklen_t * __restrict addr_len)
2326 return ldp_accept4 (fd, addr, addr_len, 0);
2330 shutdown (int fd, int how)
2337 vlsh = ldp_fd_to_vlsh (fd);
2338 if (vlsh != VLS_INVALID_HANDLE)
2340 LDBG (0, "called shutdown: fd %u vlsh %u how %d", fd, vlsh, how);
2341 rv = vls_shutdown (vlsh, how);
2345 LDBG (0, "fd %d: calling libc_shutdown: how %d", fd, how);
2346 rv = libc_shutdown (fd, how);
2353 epoll_create1 (int flags)
2355 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2361 if (ldp->vcl_needs_real_epoll || vls_use_real_epoll ())
2363 /* Make sure workers have been allocated */
2366 ldp_alloc_workers ();
2367 ldpw = ldp_worker_get_current ();
2369 rv = libc_epoll_create1 (flags);
2370 ldp->vcl_needs_real_epoll = 0;
2371 ldpw->vcl_mq_epfd = rv;
2372 LDBG (0, "created vcl epfd %u", rv);
2376 vlsh = vls_epoll_create ();
2377 if (PREDICT_FALSE (vlsh == VLS_INVALID_HANDLE))
2384 rv = ldp_vlsh_to_fd (vlsh);
2386 LDBG (0, "epoll_create epfd %u vlsh %u", rv, vlsh);
2391 epoll_create (int size)
2393 return epoll_create1 (0);
2397 epoll_ctl (int epfd, int op, int fd, struct epoll_event *event)
2399 vls_handle_t vep_vlsh, vlsh;
2404 vep_vlsh = ldp_fd_to_vlsh (epfd);
2405 if (PREDICT_FALSE (vep_vlsh == VLS_INVALID_HANDLE))
2407 /* The LDP epoll_create1 always creates VCL epfd's.
2408 * The app should never have a kernel base epoll fd unless it
2409 * was acquired outside of the LD_PRELOAD process context.
2410 * In any case, if we get one, punt it to libc_epoll_ctl.
2412 LDBG (1, "epfd %d: calling libc_epoll_ctl: op %d, fd %d"
2413 " event %p", epfd, op, fd, event);
2415 rv = libc_epoll_ctl (epfd, op, fd, event);
2419 vlsh = ldp_fd_to_vlsh (fd);
2421 LDBG (0, "epfd %d ep_vlsh %d, fd %u vlsh %d, op %u", epfd, vep_vlsh, fd,
2424 if (vlsh != VLS_INVALID_HANDLE)
2426 LDBG (1, "epfd %d: calling vls_epoll_ctl: ep_vlsh %d op %d, vlsh %u,"
2427 " event %p", epfd, vep_vlsh, op, vlsh, event);
2429 rv = vls_epoll_ctl (vep_vlsh, op, vlsh, event);
2430 if (rv != VPPCOM_OK)
2439 u32 size = sizeof (epfd);
2441 libc_epfd = vls_attr (vep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2444 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2445 "EPOLL_CLOEXEC", epfd, vep_vlsh);
2447 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2454 rv = vls_attr (vep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd,
2463 else if (PREDICT_FALSE (libc_epfd < 0))
2470 LDBG (1, "epfd %d: calling libc_epoll_ctl: libc_epfd %d, op %d, fd %d,"
2471 " event %p", epfd, libc_epfd, op, fd, event);
2473 rv = libc_epoll_ctl (libc_epfd, op, fd, event);
2481 ldp_epoll_pwait (int epfd, struct epoll_event *events, int maxevents,
2482 int timeout, const sigset_t * sigmask)
2484 ldp_worker_ctx_t *ldpw;
2485 double time_to_wait = (double) 0, max_time;
2486 int libc_epfd, rv = 0;
2487 vls_handle_t ep_vlsh;
2491 if (PREDICT_FALSE (!events || (timeout < -1)))
2497 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2498 vls_register_vcl_worker ();
2500 ldpw = ldp_worker_get_current ();
2501 if (epfd == ldpw->vcl_mq_epfd)
2502 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2504 ep_vlsh = ldp_fd_to_vlsh (epfd);
2505 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2507 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2512 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2513 clib_time_init (&ldpw->clib_time);
2514 time_to_wait = ((timeout >= 0) ? (double) timeout / 1000 : 0);
2515 max_time = clib_time_now (&ldpw->clib_time) + time_to_wait;
2517 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2518 if (PREDICT_FALSE (libc_epfd < 0))
2525 LDBG (2, "epfd %d: vep_idx %d, libc_epfd %d, events %p, maxevents %d, "
2526 "timeout %d, sigmask %p: time_to_wait %.02f", epfd, ep_vlsh,
2527 libc_epfd, events, maxevents, timeout, sigmask, time_to_wait);
2530 if (!ldpw->epoll_wait_vcl)
2532 rv = vls_epoll_wait (ep_vlsh, events, maxevents, 0);
2535 ldpw->epoll_wait_vcl = 1;
2546 ldpw->epoll_wait_vcl = 0;
2550 rv = libc_epoll_pwait (libc_epfd, events, maxevents, 0, sigmask);
2555 while ((timeout == -1) || (clib_time_now (&ldpw->clib_time) < max_time));
2562 ldp_epoll_pwait_eventfd (int epfd, struct epoll_event *events,
2563 int maxevents, int timeout, const sigset_t * sigmask)
2565 ldp_worker_ctx_t *ldpw;
2566 int libc_epfd, rv = 0, num_ev;
2567 vls_handle_t ep_vlsh;
2571 if (PREDICT_FALSE (!events || (timeout < -1)))
2577 /* Make sure the vcl worker is valid. Could be that epoll fd was created on
2578 * one thread but it is now used on another */
2579 if (PREDICT_FALSE (vppcom_worker_index () == ~0))
2580 vls_register_vcl_worker ();
2582 ldpw = ldp_worker_get_current ();
2583 if (epfd == ldpw->vcl_mq_epfd)
2584 return libc_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2586 ep_vlsh = ldp_fd_to_vlsh (epfd);
2587 if (PREDICT_FALSE (ep_vlsh == VLS_INVALID_HANDLE))
2589 LDBG (0, "epfd %d: bad ep_vlsh %d!", epfd, ep_vlsh);
2594 libc_epfd = vls_attr (ep_vlsh, VPPCOM_ATTR_GET_LIBC_EPFD, 0, 0);
2595 if (PREDICT_FALSE (!libc_epfd))
2597 u32 size = sizeof (epfd);
2599 LDBG (1, "epfd %d, vep_vlsh %d calling libc_epoll_create1: "
2600 "EPOLL_CLOEXEC", epfd, ep_vlsh);
2601 libc_epfd = libc_epoll_create1 (EPOLL_CLOEXEC);
2608 rv = vls_attr (ep_vlsh, VPPCOM_ATTR_SET_LIBC_EPFD, &libc_epfd, &size);
2616 if (PREDICT_FALSE (libc_epfd <= 0))
2623 if (PREDICT_FALSE (!ldpw->mq_epfd_added))
2625 struct epoll_event e = { 0 };
2627 e.data.fd = ldpw->vcl_mq_epfd;
2628 if (libc_epoll_ctl (libc_epfd, EPOLL_CTL_ADD, ldpw->vcl_mq_epfd, &e) <
2631 LDBG (0, "epfd %d, add libc mq epoll fd %d to libc epoll fd %d",
2632 epfd, ldpw->vcl_mq_epfd, libc_epfd);
2636 ldpw->mq_epfd_added = 1;
2639 /* Request to only drain unhandled to prevent libc_epoll_wait starved */
2640 rv = vls_epoll_wait (ep_vlsh, events, maxevents, -2);
2643 else if (PREDICT_FALSE (rv < 0))
2650 rv = libc_epoll_pwait (libc_epfd, events, maxevents, timeout, sigmask);
2653 for (int i = 0; i < rv; i++)
2655 if (events[i].data.fd == ldpw->vcl_mq_epfd)
2657 /* We should remove mq epoll fd from events. */
2661 events[i].events = events[rv].events;
2662 events[i].data.u64 = events[rv].data.u64;
2664 num_ev = vls_epoll_wait (ep_vlsh, &events[rv], maxevents - rv, 0);
2665 if (PREDICT_TRUE (num_ev > 0))
2676 epoll_pwait (int epfd, struct epoll_event *events,
2677 int maxevents, int timeout, const sigset_t * sigmask)
2679 if (vls_use_eventfd ())
2680 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout,
2683 return ldp_epoll_pwait (epfd, events, maxevents, timeout, sigmask);
2687 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
2689 if (vls_use_eventfd ())
2690 return ldp_epoll_pwait_eventfd (epfd, events, maxevents, timeout, NULL);
2692 return ldp_epoll_pwait (epfd, events, maxevents, timeout, NULL);
2696 poll (struct pollfd *fds, nfds_t nfds, int timeout)
2698 ldp_worker_ctx_t *ldpw = ldp_worker_get_current ();
2699 int rv, i, n_revents = 0;
2704 LDBG (3, "fds %p, nfds %ld, timeout %d", fds, nfds, timeout);
2706 if (PREDICT_FALSE (ldpw->clib_time.init_cpu_time == 0))
2707 clib_time_init (&ldpw->clib_time);
2709 max_time = (timeout >= 0) ? (f64) timeout / 1000 : 0;
2710 max_time += clib_time_now (&ldpw->clib_time);
2712 for (i = 0; i < nfds; i++)
2717 vlsh = ldp_fd_to_vlsh (fds[i].fd);
2718 if (vlsh != VLS_INVALID_HANDLE)
2720 fds[i].fd = -fds[i].fd;
2721 vec_add2 (ldpw->vcl_poll, vp, 1);
2723 vp->sh = vlsh_to_sh (vlsh);
2724 vp->events = fds[i].events;
2725 #ifdef __USE_XOPEN2K
2726 if (fds[i].events & POLLRDNORM)
2727 vp->events |= POLLIN;
2728 if (fds[i].events & POLLWRNORM)
2729 vp->events |= POLLOUT;
2731 vp->revents = fds[i].revents;
2735 vec_add1 (ldpw->libc_poll, fds[i]);
2736 vec_add1 (ldpw->libc_poll_idxs, i);
2742 if (vec_len (ldpw->vcl_poll))
2744 rv = vppcom_poll (ldpw->vcl_poll, vec_len (ldpw->vcl_poll), 0);
2755 if (vec_len (ldpw->libc_poll))
2757 rv = libc_poll (ldpw->libc_poll, vec_len (ldpw->libc_poll), 0);
2770 while ((timeout < 0) || (clib_time_now (&ldpw->clib_time) < max_time));
2774 vec_foreach (vp, ldpw->vcl_poll)
2776 fds[vp->fds_ndx].fd = -fds[vp->fds_ndx].fd;
2777 fds[vp->fds_ndx].revents = vp->revents;
2778 #ifdef __USE_XOPEN2K
2779 if ((fds[vp->fds_ndx].revents & POLLIN) &&
2780 (fds[vp->fds_ndx].events & POLLRDNORM))
2781 fds[vp->fds_ndx].revents |= POLLRDNORM;
2782 if ((fds[vp->fds_ndx].revents & POLLOUT) &&
2783 (fds[vp->fds_ndx].events & POLLWRNORM))
2784 fds[vp->fds_ndx].revents |= POLLWRNORM;
2787 vec_reset_length (ldpw->vcl_poll);
2789 for (i = 0; i < vec_len (ldpw->libc_poll); i++)
2791 fds[ldpw->libc_poll_idxs[i]].revents = ldpw->libc_poll[i].revents;
2793 vec_reset_length (ldpw->libc_poll_idxs);
2794 vec_reset_length (ldpw->libc_poll);
2801 ppoll (struct pollfd *fds, nfds_t nfds,
2802 const struct timespec *timeout, const sigset_t * sigmask)
2806 clib_warning ("LDP<%d>: LDP-TBD", getpid ());
2814 void CONSTRUCTOR_ATTRIBUTE ldp_constructor (void);
2816 void DESTRUCTOR_ATTRIBUTE ldp_destructor (void);
2819 * This function is called when the library is loaded
2822 ldp_constructor (void)
2824 swrap_constructor ();
2825 if (ldp_init () != 0)
2827 fprintf (stderr, "\nLDP<%d>: ERROR: ldp_constructor: failed!\n",
2831 else if (LDP_DEBUG > 0)
2832 clib_warning ("LDP<%d>: LDP constructor: done!\n", getpid ());
2836 * This function is called when the library is unloaded
2839 ldp_destructor (void)
2842 swrap_destructor ();
2847 /* Don't use clib_warning() here because that calls writev()
2848 * which will call ldp_init().
2851 fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
2852 __func__, __LINE__, getpid ());
2857 * fd.io coding-style-patch-verification: ON
2860 * eval: (c-set-style "gnu")