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[lwip-devel] [bug #50694] TX exist more pbufs after enable LWIP_NETIF_TX

From: Robin
Subject: [lwip-devel] [bug #50694] TX exist more pbufs after enable LWIP_NETIF_TX_SINGLE_PBUF
Date: Thu, 6 Apr 2017 21:03:54 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

Follow-up Comment #2, bug #50694 (project lwip):

yes, i set TCP_OVERSIZE to TCP_MSS. if you set it as 0, it will check fail
when lwip init. 
Under this case, When last unsent have some space, and re-transmission it. the
unsent_oversize will reset as 0. After that, The App send data again will
enter concat_p allocate buffer. Then, it can't ensure TX single pbuf.


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