[lwip-commits] [SCM] lwIP - A Lightweight TCPIP stack branch, master, updated. master_at_STABLE-2_0_0-393-g2980f7c

[Joel Cunningham]

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- Log -----------------------------------------------------------------
commit 2980f7cc58ec4c6f1a16eb74802b213a063b08f3
Author: Joel Cunningham <address@hidden>
Date:   Mon Feb 27 11:09:33 2017 -0600

    Vectorize netconn_write for TCP
    
    This commit adds support to the netconn write APIs to take an input of
    vectors instead of a single data pointer
    
    This allows vectors sent on a TCP connection via sendmsg to be treated
    atomically.  The set of vectors is segmented into as much data as can
    fit into the send buffer and then the TCP output function is called
    
    Previously, each vector was passed to netconn_write_partly and tcp_write
    segmented it into its own packet, which was then it was sent via
    tcp_output (if not Nagleing)
    
    This commit adds vector support to lwip_netconn_do_writemore() which
    is the meat of the TCP write functionality from netconn/sockets layer.
    A new netconn API netconn_write_vectors_partly() takes a set of vectors
    as input and hooks up to do_writemore()
    
    This commit also defines IOV_MAX because we are limited to only
    supporting 65535 vectors due to choice of u16_t for the vector count

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

Summary of changes:
 src/api/api_lib.c               | 33 +++++++++++++++-
 src/api/api_msg.c               | 86 ++++++++++++++++++++++++++++-------------
 src/api/sockets.c               | 29 +++-----------
 src/include/lwip/api.h          |  7 ++++
 src/include/lwip/priv/api_msg.h | 11 ++++--
 src/include/lwip/sockets.h      |  6 +++
 6 files changed, 117 insertions(+), 55 deletions(-)


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