xlat/sock_tcp_options.in: add #value_indexed

* xlat/sock_tcp_options.in: Add #value_indexed, provide fallback
definitions.
* net.c (print_sockopt_fd_level_name) <case SOL_TCP>: Use
printxval_index instead of printxval.

net.c

@@ -491,7 +491,7 @@ print_sockopt_fd_level_name(struct tcb *tcp, int fd, unsigned int level,
 		printxval(sock_packet_options, name, "PACKET_???");
 		break;
 	case SOL_TCP:
-		printxval(sock_tcp_options, name, "TCP_???");
+		printxval_index(sock_tcp_options, name, "TCP_???");
 		break;
 	case SOL_SCTP:
 		printxval(sock_sctp_options, name, "SCTP_???");

xlat/sock_tcp_options.in

@@ -1,36 +1,37 @@
-TCP_NODELAY
-TCP_MAXSEG
-TCP_CORK
-TCP_KEEPIDLE
-TCP_KEEPINTVL
-TCP_KEEPCNT
-TCP_SYNCNT
-TCP_LINGER2
-TCP_DEFER_ACCEPT
-TCP_WINDOW_CLAMP
-TCP_INFO
-TCP_QUICKACK
-TCP_CONGESTION
-TCP_MD5SIG
-TCP_COOKIE_TRANSACTIONS
-TCP_THIN_LINEAR_TIMEOUTS
-TCP_THIN_DUPACK
-TCP_USER_TIMEOUT
-TCP_REPAIR
-TCP_REPAIR_QUEUE
-TCP_QUEUE_SEQ
-TCP_REPAIR_OPTIONS
-TCP_FASTOPEN
-TCP_TIMESTAMP
-TCP_NOTSENT_LOWAT
-TCP_CC_INFO
-TCP_SAVE_SYN
-TCP_SAVED_SYN
-TCP_REPAIR_WINDOW
-TCP_FASTOPEN_CONNECT
-TCP_ULP
-TCP_MD5SIG_EXT
-TCP_FASTOPEN_KEY
-TCP_FASTOPEN_NO_COOKIE
-TCP_ZEROCOPY_RECEIVE
-TCP_INQ
+#value_indexed
+TCP_NODELAY			1
+TCP_MAXSEG			2
+TCP_CORK			3
+TCP_KEEPIDLE			4
+TCP_KEEPINTVL			5
+TCP_KEEPCNT			6
+TCP_SYNCNT			7
+TCP_LINGER2			8
+TCP_DEFER_ACCEPT		9
+TCP_WINDOW_CLAMP		10
+TCP_INFO			11
+TCP_QUICKACK			12
+TCP_CONGESTION			13
+TCP_MD5SIG			14
+TCP_COOKIE_TRANSACTIONS		15
+TCP_THIN_LINEAR_TIMEOUTS	16
+TCP_THIN_DUPACK			17
+TCP_USER_TIMEOUT		18
+TCP_REPAIR			19
+TCP_REPAIR_QUEUE		20
+TCP_QUEUE_SEQ			21
+TCP_REPAIR_OPTIONS		22
+TCP_FASTOPEN			23
+TCP_TIMESTAMP			24
+TCP_NOTSENT_LOWAT		25
+TCP_CC_INFO			26
+TCP_SAVE_SYN			27
+TCP_SAVED_SYN			28
+TCP_REPAIR_WINDOW		29
+TCP_FASTOPEN_CONNECT		30
+TCP_ULP				31
+TCP_MD5SIG_EXT			32
+TCP_FASTOPEN_KEY		33
+TCP_FASTOPEN_NO_COOKIE		34
+TCP_ZEROCOPY_RECEIVE		35
+TCP_INQ				36