netdev - [RFC PATCH net-next 0/4] DSA tagger helpers

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Date:   Mon,  9 Aug 2021 14:57:18 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        DENG Qingfang <dqfext@...il.com>,
        John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>
Subject: [RFC PATCH net-next 0/4] DSA tagger helpers

The goal of this series is to minimize the use of memmove and skb->data
in the DSA tagging protocol drivers. Unfiltered access to this level of
information is not very friendly to drive-by contributors, and sometimes
is also not the easiest to review.

For starters, I have converted the most common form of DSA tagging
protocols: the DSA headers which are placed where the EtherType is.

The helper functions introduced by this series are:
- dsa_alloc_etype_header
- dsa_strip_etype_header
- dsa_etype_header_pos_rx
- dsa_etype_header_pos_tx

Vladimir Oltean (4):
  net: dsa: create a helper that strips EtherType DSA headers on RX
  net: dsa: create a helper which allocates space for EtherType DSA
    headers
  net: dsa: create a helper for locating EtherType DSA headers on RX
  net: dsa: create a helper for locating EtherType DSA headers on TX

 net/dsa/dsa_priv.h    | 78 +++++++++++++++++++++++++++++++++++++++++++
 net/dsa/tag_brcm.c    | 16 +++------
 net/dsa/tag_dsa.c     | 20 +++++------
 net/dsa/tag_lan9303.c | 18 ++++------
 net/dsa/tag_mtk.c     | 14 +++-----
 net/dsa/tag_qca.c     | 13 +++-----
 net/dsa/tag_rtl4_a.c  | 16 +++------
 net/dsa/tag_sja1105.c | 25 +++++---------
 8 files changed, 119 insertions(+), 81 deletions(-)

-- 
2.25.1