[lwip-commits] [SCM] lwIP - A Lightweight TCPIP stack branch, master, updated. master_at_STABLE-2_0_0-360-gd3fc398

[Simon Goldschmidt]

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- Log -----------------------------------------------------------------
commit d3fc3985806a97b15e363276c33c19bc50a10f24
Author: David van Moolenbroek <address@hidden>
Date:   Mon Feb 27 14:43:58 2017 +0000

    arp/ndp: allow overriding the decision to copy pbufs
    
    lwIP aims to support zero-copy TX, and thus, must internally handle
    all cases that pbufs are referenced rather than copied upon low-level
    output.  However, in the current situation, the arp/ndp packet queuing
    routines conservatively copy entire packets, even when unnecessary in
    cases where lwIP is used in a zero-copy compliant manner.  This patch
    moves the decision whether to copy into a centralized macro, allowing
    zero-copy compliant applications to override the macro to avoid the
    unnecessary copies.  The macro defaults to the safe behavior, though.

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

Summary of changes:
 src/core/ipv4/etharp.c  |  7 +++----
 src/core/ipv6/nd6.c     |  7 +++----
 src/include/lwip/pbuf.h | 16 ++++++++++++++++
 3 files changed, 22 insertions(+), 8 deletions(-)


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