inet/tcp/tcp_input.c

243 	uchar_t		*up = (uchar_t *)tcpha;
249 	endp = up + TCP_HDR_LENGTH(tcpha);
250 	up += TCP_MIN_HEADER_LENGTH;
251 	while (up < endp) {
252 		len = endp - up;
253 		switch (*up) {
258 			up++;
263 			    up[1] != TCPOPT_MAXSEG_LEN)
266 			mss = BE16_TO_U16(up+2);
271 			up += TCPOPT_MAXSEG_LEN;
275 			if (len < TCPOPT_WS_LEN || up[1] != TCPOPT_WS_LEN)
278 			if (up[2] > TCP_MAX_WINSHIFT)
281 				tcpopt->tcp_opt_wscale = up[2];
284 			up += TCPOPT_WS_LEN;
289 			    up[1] != TCPOPT_SACK_OK_LEN)
292 			up += TCPOPT_SACK_OK_LEN;
296 			if (len <= 2 || up[1] <= 2 || len < up[1])
301 				up += up[1];
304 			sack_len = up[1] - TCPOPT_HEADER_LEN;
305 			up += TCPOPT_HEADER_LEN;
323 					up += sack_len;
330 				if (up + 8 > endp) {
331 					up = endp;
334 				sack_begin = BE32_TO_U32(up);
335 				up += 4;
336 				sack_end = BE32_TO_U32(up);
337 				up += 4;
364 			    up[1] != TCPOPT_TSTAMP_LEN)
367 			tcpopt->tcp_opt_ts_val = BE32_TO_U32(up+2);
368 			tcpopt->tcp_opt_ts_ecr = BE32_TO_U32(up+6);
372 			up += TCPOPT_TSTAMP_LEN;
376 			if (len <= 1 || len < (int)up[1] || up[1] == 0)
378 			up += up[1];
391  * This function sets up the correct tcp_mss value according to the
392  * MSS option value and our header size.  It also sets up the window scale
531 	 * by tcp_set_destination().  tcp_mss_set() will also set up the
694 	uint8_t *up;
705 	    OK_32PTR((up = ((uint8_t *)tcpha) +
707 	    *(uint32_t *)up == TCPOPT_NOP_NOP_TSTAMP) {
708 		tcpoptp->tcp_opt_ts_val = ABE32_TO_U32((up+4));
709 		tcpoptp->tcp_opt_ts_ecr = ABE32_TO_U32((up+8));
757 		 * transfer rate built up so far.
777  *    either when eager goes into ESTABLISHED, or gets freed up.)
896 			/* Pass up the scope_id of remote addr */
1015 			 * The eager has sent a conn_ind up to the
1295  * eager is killed due to an incoming RST before the T_conn_ind is sent up,
1557 		 * at close time, we will always have that to send up.
1674 	 * window size changed via SO_RCVBUF option. First round up the
1973  * Send up all messages queued on tcp_rcv_list.
2161 		/* Set up the TCP flag field. */
2495 			 * For loopback we defer sending up the T_CONN_CON
2502 			 * sending up connection confirmation.  Probe the
2602 						/* Send up T_CONN_CON */
2997 			 * is sent up. This plus the check for old data
3005 			 * been sent up.
3298 				 * send up a zero-length M_DATA indicating
3300 				 * is not needed when a T_EXDATA_IND is sent up.
3306 				 * send up the mark indication.
3328 				 * sees the urgent segment it will send up the
3348 			 * tcp_input_data from sending up the allocated
3349 			 * MSG*MARKNEXT message - send it up this time
3367 				 * Break it up and feed it back in.
3524 			 * is tagged with MSGMARKNEXT. Sending up these
3526 			 * even though the T_EXDATA_IND will not be sent up
3575 		 * sending up a connection confirmation or a new
3583 		 * so we must send up a T_CONN_CON
3630 				/* notification did not go up, so drop ref */
3647 			 * socket, so pass up the T_CONN_IND.
3876 				 * paper "Improving the Start-up Behavior
4008 	 * update, but all the data sent previously is queued up by the peer.
4429 				 * the FIN to arrive.  If it doesn't show up,
4688 				 * up.  The other way to do this is to
4689 				 * send all queued data up and then call
4690 				 * putnext() to send the new segment up.
4807 		 * Send up any queued data and then send the mark message
4861 		 * we send up an ordrel_ind, unless this is an eager, in which
5407  * passed up by IP. The message is always received on the correct tcp_t.
5408  * Assumes that IP has pulled up everything up to and including the ICMP header.
5544  * error messages passed up by IP.
5545  * Assumes that IP has pulled up all the extension headers as well