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From: Aleksander Morgado <aleksander@aleksander.es>
To: s.hauer@pengutronix.de, barebox@lists.infradead.org
Cc: Aleksander Morgado <aleksander@aleksander.es>
Subject: [PATCH 07/16] ratp: fix single byte sending flagged with SO
Date: Thu, 15 Jun 2017 13:14:11 +0200	[thread overview]
Message-ID: <20170615111420.5318-8-aleksander@aleksander.es> (raw)
In-Reply-To: <20170615111420.5318-1-aleksander@aleksander.es>

When a single data byte is sent, it is flagged as SO and the actual
data goes in the length byte within the header.

Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
---
 lib/ratp.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/lib/ratp.c b/lib/ratp.c
index c946bea1a..846f8130c 100644
--- a/lib/ratp.c
+++ b/lib/ratp.c
@@ -384,6 +384,7 @@ static int ratp_send_next_data(struct ratp_internal *ri)
 	uint16_t crc;
 	uint8_t control;
 	struct ratp_header *hdr;
+	uint8_t *data;
 	int pktlen;
 	struct ratp_message *msg;
 	int len;
@@ -409,19 +410,19 @@ static int ratp_send_next_data(struct ratp_internal *ri)
 		RATP_CONTROL_ACK;
 
 	hdr = msg->buf;
+	data = (uint8_t *)(hdr + 1);
 
 	if (msg->eor)
 		control |= RATP_CONTROL_EOR;
 
+	pktlen = sizeof(struct ratp_header);
 	if (len > 1) {
-		void *data = hdr + 1;
-		pktlen = sizeof(*hdr) + len + 2;
+		pktlen += len + 2;
 		crc = cyg_crc16(data, len);
 		put_unaligned_be16(crc, data + len);
-	} else {
-		pktlen = sizeof(struct ratp_header);
+	} else if (len == 1) {
 		control |= RATP_CONTROL_SO;
-		len = 0;
+		len = *data;
 	}
 
 	ratp_create_packet(ri, hdr, control, len);
-- 
2.13.1


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  parent reply	other threads:[~2017-06-15 11:15 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-15 11:14 [PATCH 00/16] RATP logic fixes and improvements Aleksander Morgado
2017-06-15 11:14 ` [PATCH 01/16] ratp: add missing transition to SYN-RECEIVED in behavior B Aleksander Morgado
2017-06-15 11:14 ` [PATCH 02/16] ratp: avoid unnecessary variable initializations Aleksander Morgado
2017-06-15 11:14 ` [PATCH 03/16] ratp: send missing RST in behavior C2 Aleksander Morgado
2017-06-15 11:14 ` [PATCH 04/16] ratp: add missing RST flag in behavior G Aleksander Morgado
2017-06-15 11:14 ` [PATCH 05/16] ratp: completely ignore RST flagged packets " Aleksander Morgado
2017-06-15 11:14 ` [PATCH 06/16] ratp: fix data presence check Aleksander Morgado
2017-06-15 11:14 ` Aleksander Morgado [this message]
2017-06-15 11:14 ` [PATCH 08/16] ratp: remove bogus data checks in behavior C2 Aleksander Morgado
2017-06-15 11:14 ` [PATCH 09/16] ratp: remove FIXME comment: FIN always requires ACK Aleksander Morgado
2017-06-15 11:14 ` [PATCH 10/16] ratp: fix sending ACKs without data Aleksander Morgado
2017-06-15 11:14 ` [PATCH 11/16] ratp: consolidate ratp_sn_expected() and ratp_an_expected() Aleksander Morgado
2017-06-15 11:14 ` [PATCH 12/16] ratp: prefer using ratp_send_ack() in behaviour I1 Aleksander Morgado
2017-06-15 11:14 ` [PATCH 13/16] ratp: send initial data in behaviour B if any pending Aleksander Morgado
2017-06-15 11:14 ` [PATCH 14/16] ratp: don't ignore data that may arrive in behaviour H1 Aleksander Morgado
2017-06-15 11:14 ` [PATCH 15/16] ratp: consolidate setting the next AN or SN flags Aleksander Morgado
2017-06-15 11:14 ` [PATCH 16/16] ratp: user close may happen in SYN-RECEIVED state Aleksander Morgado
2017-06-19  6:46 ` [PATCH 00/16] RATP logic fixes and improvements Sascha Hauer
2017-06-19  9:07   ` Aleksander Morgado
2017-06-19  9:37     ` Sascha Hauer

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