Commit 504b273b authored Apr 14, 2017 by june li Committed by Jukka Rissanen Apr 21, 2017

net: tcp: Do buf ref when resending a segment



We need to check whether buf_sent was true when resending the TCP
segment, and do a buf ref if needed. If this is not done, the buf
will be unref after send, which will cause unpredictable results.

Change-Id: Ibd4490305de88ac6ffd04ec42bba196e57da5c10
Signed-off-by: june li <junelizh@foxmail.com>

parent 7ce82fea

subsys/net/ip/tcp.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -831,8 +831,11 @@ void net_tcp_ack_received(struct net_context *ctx, uint32_t ack)

		SYS_SLIST_FOR_EACH_CONTAINER(&ctx->tcp->sent_list, buf,
		sent_list) {
		if (net_nbuf_buf_sent(buf)) {
		do_ref_if_needed(buf);
		net_nbuf_set_buf_sent(buf, false);
		}
		}

		net_tcp_send_data(ctx);
		}

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