Merge pull request #12798 from donaldsharp/rib_match_multicast

[mirror_frr.git] / lib / sockopt.h

diff --git a/lib/sockopt.h b/lib/sockopt.h
index 4081e6a45b1271acadc59048aef6c615e7d77814..ce7d665fab5f2686456e418dc0cc65248d04ebd7 100644 (file)
--- a/lib/sockopt.h
+++ b/lib/sockopt.h
@@ -1,21 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /* Router advertisement
  * Copyright (C) 1999 Kunihiro Ishiguro
- *
- * This file is part of GNU Zebra.
- *
- * GNU Zebra is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * GNU Zebra is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; see the file COPYING; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef _ZEBRA_SOCKOPT_H
@@ -59,11 +44,7 @@ extern int setsockopt_ipv6_tclass(int, int);
 #if defined(IP_RECVIF)
 /* BSD/Solaris */
 
-#if defined(SUNOS_5)
-#define SOPT_SIZE_CMSG_RECVIF_IPV4()  (sizeof(uint_t))
-#else
 #define SOPT_SIZE_CMSG_RECVIF_IPV4()   (sizeof(struct sockaddr_dl))
-#endif /* SUNOS_5 */
 #endif /* IP_RECVIF */
 
 /* SOPT_SIZE_CMSG_IFINDEX_IPV4 - portable type */
@@ -137,6 +118,48 @@ extern int sockopt_tcp_signature(int sock, union sockunion *su,
 extern int sockopt_tcp_signature_ext(int sock, union sockunion *su,
                                     uint16_t prefixlen, const char *password);
 
+/*
+ * set TCP max segment size. This option allows user to configure
+ * max segment size for TCP session
+ *
+ * sock
+ *    Socket to enable option on.
+ *
+ * tcp_maxseg
+ *    value used for TCP segment size negotiation during SYN
+ */
+extern int sockopt_tcp_mss_set(int sock, int tcp_maxseg);
+
+/*
+ * get TCP max segment size. This option allows user to get
+ * the segment size for TCP session
+ *
+ * sock
+ *    Socket to get max segement size.
+ */
+extern int sockopt_tcp_mss_get(int sock);
+
+/*
+ * Configure TCP keepalive for a given socket
+ *
+ * sock
+ *   Socket to enable keepalive option on.
+ *
+ * keepalive_idle
+ *   number of seconds a connection needs to be idle
+ *   before sending out keep-alive proves
+ *
+ * keepalive_intvl
+ *   number of seconds between TCP keep-alive probes
+ *
+ * keepalive_probes
+ *   max number of probers to send before giving up
+ *   and killing tcp connection
+ */
+extern int setsockopt_tcp_keepalive(int sock, uint16_t keepalive_idle,
+                                   uint16_t keepalive_intvl,
+                                   uint16_t keepalive_probes);
+
 #ifdef __cplusplus
 }
 #endif