[lwip-commits] [SCM] lwIP - A Lightweight TCPIP stack branch, master, updated. master_at_STABLE-2_0_0-1414-gffaee59

[Joel Cunningham]

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- Log -----------------------------------------------------------------
commit ffaee59f3e42b402eacfc623b81a48f6b631412c
Author: Joel Cunningham <address@hidden>
Date:   Fri Apr 27 17:42:30 2018 -0500

    loopif: only schedule poll when first packet is enqueued
    
    This optimizes the netif_loop_output to only schedule a call to poll when
    the first packet is enqueued. This ensures netif_poll is ran once per
    burst of packets that are sent (which is typical in a TCP transfer)
    
    The old behavior scheduled a call to poll for every packet that was
    enqueued and this lead to exhaustion of the MEMP_TCPIP_MSG_API memory pool
    and tcpip_mbox (if port is using static mbox size). The extra callbacks are
    wasted work because netif_poll drains the entire queue when ran
    
    This issue presented itself when large TCP transfer go across the loopback
    netif

commit 070e449690b5a13991c3cd1ac250e893a0186430
Author: Joel Cunningham <address@hidden>
Date:   Fri Apr 27 16:54:01 2018 -0500

    loopif: disable checksums
    
    This disable checksum generation and checking for the loopback netif
    when LWIP_CHECKSUM_CTRL_PER_NETIF is enabled
    
    Checksums are not needed for the loopback adapter and this will increase
    performance for loopback communication

-----------------------------------------------------------------------

Summary of changes:
 src/core/netif.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)


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