[TCP]: spelling fixes

Minor spelling fixes for TCP code.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/tcp.h

@@ -89,10 +89,10 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 				 */
 
 #define TCP_SYN_RETRIES	 5	/* number of times to retry active opening a
-				 * connection: ~180sec is RFC minumum	*/
+				 * connection: ~180sec is RFC minimum	*/
 
 #define TCP_SYNACK_RETRIES 5	/* number of times to retry passive opening a
-				 * connection: ~180sec is RFC minumum	*/
+				 * connection: ~180sec is RFC minimum	*/
 
 
 #define TCP_ORPHAN_RETRIES 7	/* number of times to retry on an orphaned
@@ -180,7 +180,7 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
 /* Flags in tp->nonagle */
 #define TCP_NAGLE_OFF		1	/* Nagle's algo is disabled */
 #define TCP_NAGLE_CORK		2	/* Socket is corked	    */
-#define TCP_NAGLE_PUSH		4	/* Cork is overriden for already queued data */
+#define TCP_NAGLE_PUSH		4	/* Cork is overridden for already queued data */
 
 extern struct inet_timewait_death_row tcp_death_row;
 
@@ -552,13 +552,13 @@ extern u32	__tcp_select_window(struct sock *sk);
 
 /* TCP timestamps are only 32-bits, this causes a slight
  * complication on 64-bit systems since we store a snapshot
- * of jiffies in the buffer control blocks below.  We decidely
+ * of jiffies in the buffer control blocks below.  We decidedly
  * only use of the low 32-bits of jiffies and hide the ugly
  * casts with the following macro.
  */
 #define tcp_time_stamp		((__u32)(jiffies))
 
-/* This is what the send packet queueing engine uses to pass
+/* This is what the send packet queuing engine uses to pass
  * TCP per-packet control information to the transmission
  * code.  We also store the host-order sequence numbers in
  * here too.  This is 36 bytes on 32-bit architectures,
@@ -598,7 +598,7 @@ struct tcp_skb_cb {
 #define TCPCB_EVER_RETRANS	0x80	/* Ever retransmitted frame	*/
 #define TCPCB_RETRANS		(TCPCB_SACKED_RETRANS|TCPCB_EVER_RETRANS)
 
-#define TCPCB_URG		0x20	/* Urgent pointer advenced here	*/
+#define TCPCB_URG		0x20	/* Urgent pointer advanced here	*/
 
 #define TCPCB_AT_TAIL		(TCPCB_URG)
 

net/ipv4/tcp.c

@@ -1640,7 +1640,7 @@ int tcp_disconnect(struct sock *sk, int flags)
 	} else if (tcp_need_reset(old_state) ||
 		   (tp->snd_nxt != tp->write_seq &&
 		    (1 << old_state) & (TCPF_CLOSING | TCPF_LAST_ACK))) {
-		/* The last check adjusts for discrepance of Linux wrt. RFC
+		/* The last check adjusts for discrepancy of Linux wrt. RFC
 		 * states
 		 */
 		tcp_send_active_reset(sk, gfp_any());

net/ipv4/tcp_input.c

@@ -42,7 +42,7 @@
  *		Andi Kleen	:	Moved open_request checking here
  *					and process RSTs for open_requests.
  *		Andi Kleen	:	Better prune_queue, and other fixes.
- *		Andrey Savochkin:	Fix RTT measurements in the presnce of
+ *		Andrey Savochkin:	Fix RTT measurements in the presence of
  *					timestamps.
  *		Andrey Savochkin:	Check sequence numbers correctly when
  *					removing SACKs due to in sequence incoming
@@ -224,7 +224,7 @@ static void tcp_fixup_sndbuf(struct sock *sk)
  *   of receiver window. Check #2.
  *
  * The scheme does not work when sender sends good segments opening
- * window and then starts to feed us spagetti. But it should work
+ * window and then starts to feed us spaghetti. But it should work
  * in common situations. Otherwise, we have to rely on queue collapsing.
  */
 
@@ -278,7 +278,7 @@ static void tcp_fixup_rcvbuf(struct sock *sk)
 	int rcvmem = tp->advmss + MAX_TCP_HEADER + 16 + sizeof(struct sk_buff);
 
 	/* Try to select rcvbuf so that 4 mss-sized segments
-	 * will fit to window and correspoding skbs will fit to our rcvbuf.
+	 * will fit to window and corresponding skbs will fit to our rcvbuf.
 	 * (was 3; 4 is minimum to allow fast retransmit to work.)
 	 */
 	while (tcp_win_from_space(rcvmem) < tp->advmss)
@@ -287,7 +287,7 @@ static void tcp_fixup_rcvbuf(struct sock *sk)
 		sk->sk_rcvbuf = min(4 * rcvmem, sysctl_tcp_rmem[2]);
 }
 
-/* 4. Try to fixup all. It is made iimediately after connection enters
+/* 4. Try to fixup all. It is made immediately after connection enters
  *    established state.
  */
 static void tcp_init_buffer_space(struct sock *sk)
@@ -367,8 +367,8 @@ static void tcp_rcv_rtt_update(struct tcp_sock *tp, u32 sample, int win_dep)
 		 * are stalled on filesystem I/O.
 		 *
 		 * Also, since we are only going for a minimum in the
-		 * non-timestamp case, we do not smoothe things out
-		 * else with timestamps disabled convergance takes too
+		 * non-timestamp case, we do not smoother things out
+		 * else with timestamps disabled convergence takes too
 		 * long.
 		 */
 		if (!win_dep) {
@@ -377,7 +377,7 @@ static void tcp_rcv_rtt_update(struct tcp_sock *tp, u32 sample, int win_dep)
 		} else if (m < new_sample)
 			new_sample = m << 3;
 	} else {
-		/* No previous mesaure. */
+		/* No previous measure. */
 		new_sample = m << 3;
 	}
 
@@ -506,7 +506,7 @@ static void tcp_event_data_recv(struct sock *sk, struct tcp_sock *tp, struct sk_
 			if (icsk->icsk_ack.ato > icsk->icsk_rto)
 				icsk->icsk_ack.ato = icsk->icsk_rto;
 		} else if (m > icsk->icsk_rto) {
-			/* Too long gap. Apparently sender falled to
+			/* Too long gap. Apparently sender failed to
 			 * restart window, so that we send ACKs quickly.
 			 */
 			tcp_incr_quickack(sk);
@@ -546,7 +546,7 @@ static void tcp_rtt_estimator(struct sock *sk, const __u32 mrtt)
 	 *
 	 * Funny. This algorithm seems to be very broken.
 	 * These formulae increase RTO, when it should be decreased, increase
-	 * too slowly, when it should be incresed fastly, decrease too fastly
+	 * too slowly, when it should be increased fastly, decrease too fastly
 	 * etc. I guess in BSD RTO takes ONE value, so that it is absolutely
 	 * does not matter how to _calculate_ it. Seems, it was trap
 	 * that VJ failed to avoid. 8)
@@ -607,14 +607,14 @@ static inline void tcp_set_rto(struct sock *sk)
 	 *    at least by solaris and freebsd. "Erratic ACKs" has _nothing_
 	 *    to do with delayed acks, because at cwnd>2 true delack timeout
 	 *    is invisible. Actually, Linux-2.4 also generates erratic
-	 *    ACKs in some curcumstances.
+	 *    ACKs in some circumstances.
 	 */
 	inet_csk(sk)->icsk_rto = (tp->srtt >> 3) + tp->rttvar;
 
 	/* 2. Fixups made earlier cannot be right.
 	 *    If we do not estimate RTO correctly without them,
 	 *    all the algo is pure shit and should be replaced
-	 *    with correct one. It is exaclty, which we pretend to do.
+	 *    with correct one. It is exactly, which we pretend to do.
 	 */
 }
 
@@ -772,7 +772,7 @@ static void tcp_init_metrics(struct sock *sk)
 	 * to make it more realistic.
 	 *
 	 * A bit of theory. RTT is time passed after "normal" sized packet
-	 * is sent until it is ACKed. In normal curcumstances sending small
+	 * is sent until it is ACKed. In normal circumstances sending small
 	 * packets force peer to delay ACKs and calculation is correct too.
 	 * The algorithm is adaptive and, provided we follow specs, it
 	 * NEVER underestimate RTT. BUT! If peer tries to make some clever
@@ -1899,7 +1899,7 @@ tcp_fastretrans_alert(struct sock *sk, u32 prior_snd_una,
 }
 
 /* Read draft-ietf-tcplw-high-performance before mucking
- * with this code. (Superceeds RFC1323)
+ * with this code. (Supersedes RFC1323)
  */
 static void tcp_ack_saw_tstamp(struct sock *sk, int flag)
 {
@@ -1912,7 +1912,7 @@ static void tcp_ack_saw_tstamp(struct sock *sk, int flag)
 	 * 1998/04/10 Andrey V. Savochkin <saw@msu.ru>
 	 *
 	 * Changed: reset backoff as soon as we see the first valid sample.
-	 * If we do not, we get strongly overstimated rto. With timestamps
+	 * If we do not, we get strongly overestimated rto. With timestamps
 	 * samples are accepted even from very old segments: f.e., when rtt=1
 	 * increases to 8, we retransmit 5 times and after 8 seconds delayed
 	 * answer arrives rto becomes 120 seconds! If at least one of segments
@@ -2268,7 +2268,7 @@ static void tcp_process_frto(struct sock *sk, u32 prior_snd_una)
 	}
 
 	/* F-RTO affects on two new ACKs following RTO.
-	 * At latest on third ACK the TCP behavor is back to normal.
+	 * At latest on third ACK the TCP behavior is back to normal.
 	 */
 	tp->frto_counter = (tp->frto_counter + 1) % 3;
 }
@@ -2344,7 +2344,7 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
 		tcp_process_frto(sk, prior_snd_una);
 
 	if (tcp_ack_is_dubious(sk, flag)) {
-		/* Advanve CWND, if state allows this. */
+		/* Advance CWND, if state allows this. */
 		if ((flag & FLAG_DATA_ACKED) && tcp_may_raise_cwnd(sk, flag))
 			tcp_cong_avoid(sk, ack,  seq_rtt, prior_in_flight, 0);
 		tcp_fastretrans_alert(sk, prior_snd_una, prior_packets, flag);
@@ -3133,7 +3133,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
 {
 	struct sk_buff *skb;
 
-	/* First, check that queue is collapsable and find
+	/* First, check that queue is collapsible and find
 	 * the point where collapsing can be useful. */
 	for (skb = head; skb != tail; ) {
 		/* No new bits? It is possible on ofo queue. */
@@ -3441,7 +3441,7 @@ static __inline__ void tcp_ack_snd_check(struct sock *sk)
 
 /*
  *	This routine is only called when we have urgent data
- *	signalled. Its the 'slow' part of tcp_urg. It could be
+ *	signaled. Its the 'slow' part of tcp_urg. It could be
  *	moved inline now as tcp_urg is only called from one
  *	place. We handle URGent data wrong. We have to - as
  *	BSD still doesn't use the correction from RFC961.
@@ -3486,7 +3486,7 @@ static void tcp_check_urg(struct sock * sk, struct tcphdr * th)
 	 * urgent. To do this requires some care. We cannot just ignore
 	 * tp->copied_seq since we would read the last urgent byte again
 	 * as data, nor can we alter copied_seq until this data arrives
-	 * or we break the sematics of SIOCATMARK (and thus sockatmark())
+	 * or we break the semantics of SIOCATMARK (and thus sockatmark())
 	 *
 	 * NOTE. Double Dutch. Rendering to plain English: author of comment
 	 * above did something sort of 	send("A", MSG_OOB); send("B", MSG_OOB);
@@ -3631,7 +3631,7 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb,
 	tp->rx_opt.saw_tstamp = 0;
 
 	/*	pred_flags is 0xS?10 << 16 + snd_wnd
-	 *	if header_predition is to be made
+	 *	if header_prediction is to be made
 	 *	'S' will always be tp->tcp_header_len >> 2
 	 *	'?' will be 0 for the fast path, otherwise pred_flags is 0 to
 	 *  turn it off	(when there are holes in the receive 

net/ipv4/tcp_ipv4.c

@@ -39,7 +39,7 @@
  *					request_sock handling and moved
  *					most of it into the af independent code.
  *					Added tail drop and some other bugfixes.
- *					Added new listen sematics.
+ *					Added new listen semantics.
  *		Mike McLagan	:	Routing by source
  *	Juan Jose Ciarlante:		ip_dynaddr bits
  *		Andi Kleen:		various fixes.
@@ -1210,7 +1210,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
 
 	/* An explanation is required here, I think.
 	 * Packet length and doff are validated by header prediction,
-	 * provided case of th->doff==0 is elimineted.
+	 * provided case of th->doff==0 is eliminated.
 	 * So, we defer the checks. */
 	if ((skb->ip_summed != CHECKSUM_UNNECESSARY &&
 	     tcp_v4_checksum_init(skb)))

net/ipv4/tcp_minisocks.c

@@ -158,7 +158,7 @@ kill_with_rst:
 		/* I am shamed, but failed to make it more elegant.
 		 * Yes, it is direct reference to IP, which is impossible
 		 * to generalize to IPv6. Taking into account that IPv6
-		 * do not undertsnad recycling in any case, it not
+		 * do not understand recycling in any case, it not
 		 * a big problem in practice. --ANK */
 		if (tw->tw_family == AF_INET &&
 		    tcp_death_row.sysctl_tw_recycle && tcptw->tw_ts_recent_stamp &&
@@ -194,7 +194,7 @@ kill_with_rst:
 		/* In window segment, it may be only reset or bare ack. */
 
 		if (th->rst) {
-			/* This is TIME_WAIT assasination, in two flavors.
+			/* This is TIME_WAIT assassination, in two flavors.
 			 * Oh well... nobody has a sufficient solution to this
 			 * protocol bug yet.
 			 */
@@ -551,7 +551,7 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
 
 	/* RFC793 page 36: "If the connection is in any non-synchronized state ...
 	 *                  and the incoming segment acknowledges something not yet
-	 *                  sent (the segment carries an unaccaptable ACK) ...
+	 *                  sent (the segment carries an unacceptable ACK) ...
 	 *                  a reset is sent."
 	 *
 	 * Invalid ACK: reset will be sent by listening socket

net/ipv4/tcp_output.c

@@ -599,7 +599,7 @@ int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
    for TCP options, but includes only bare TCP header.
 
    tp->rx_opt.mss_clamp is mss negotiated at connection setup.
-   It is minumum of user_mss and mss received with SYN.
+   It is minimum of user_mss and mss received with SYN.
    It also does not include TCP options.
 
    tp->pmtu_cookie is last pmtu, seen by this function.
@@ -1171,7 +1171,7 @@ u32 __tcp_select_window(struct sock *sk)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	struct tcp_sock *tp = tcp_sk(sk);
-	/* MSS for the peer's data.  Previous verions used mss_clamp
+	/* MSS for the peer's data.  Previous versions used mss_clamp
 	 * here.  I don't know if the value based on our guesses
 	 * of peer's MSS is better for the performance.  It's more correct
 	 * but may be worse for the performance because of rcv_mss
@@ -1361,7 +1361,7 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
 	int err;
 
 	/* Do not sent more than we queued. 1/4 is reserved for possible
-	 * copying overhead: frgagmentation, tunneling, mangling etc.
+	 * copying overhead: fragmentation, tunneling, mangling etc.
 	 */
 	if (atomic_read(&sk->sk_wmem_alloc) >
 	    min(sk->sk_wmem_queued + (sk->sk_wmem_queued >> 2), sk->sk_sndbuf))

net/ipv4/tcp_timer.c

@@ -58,7 +58,7 @@ static void tcp_write_err(struct sock *sk)
  * to prevent DoS attacks. It is called when a retransmission timeout
  * or zero probe timeout occurs on orphaned socket.
  *
- * Criterium is still not confirmed experimentally and may change.
+ * Criteria is still not confirmed experimentally and may change.
  * We kill the socket, if:
  * 1. If number of orphaned sockets exceeds an administratively configured
  *    limit.
@@ -132,7 +132,7 @@ static int tcp_write_timeout(struct sock *sk)
 			   hole detection. :-(
 
 			   It is place to make it. It is not made. I do not want
-			   to make it. It is disguisting. It does not work in any
+			   to make it. It is disgusting. It does not work in any
 			   case. Let me to cite the same draft, which requires for
 			   us to implement this: