git.ipfire.org Git - thirdparty/kernel/stable-queue.git/blob

   1 From 475747a19316b08e856c666a20503e73d7ed67ed Mon Sep 17 00:00:00 2001
   2 From: Rahul Rameshbabu <rrameshbabu@nvidia.com>
   3 Date: Tue, 23 Apr 2024 11:13:02 -0700
   4 Subject: macsec: Enable devices to advertise whether they update sk_buff md_dst during offloads
   5
   6 From: Rahul Rameshbabu <rrameshbabu@nvidia.com>
   7
   8 commit 475747a19316b08e856c666a20503e73d7ed67ed upstream.
   9
  10 Cannot know whether a Rx skb missing md_dst is intended for MACsec or not
  11 without knowing whether the device is able to update this field during an
  12 offload. Assume that an offload to a MACsec device cannot support updating
  13 md_dst by default. Capable devices can advertise that they do indicate that
  14 an skb is related to a MACsec offloaded packet using the md_dst.
  15
  16 Cc: Sabrina Dubroca <sd@queasysnail.net>
  17 Cc: stable@vger.kernel.org
  18 Fixes: 860ead89b851 ("net/macsec: Add MACsec skb_metadata_dst Rx Data path support")
  19 Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
  20 Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
  21 Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
  22 Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
  23 Link: https://lore.kernel.org/r/20240423181319.115860-2-rrameshbabu@nvidia.com
  24 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  25 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  26 ---
  27  include/net/macsec.h |    2 ++
  28  1 file changed, 2 insertions(+)
  29
  30 --- a/include/net/macsec.h
  31 +++ b/include/net/macsec.h
  32 @@ -321,6 +321,7 @@ struct macsec_context {
  33   *     for the TX tag
  34   * @needed_tailroom: number of bytes reserved at the end of the sk_buff for the
  35   *     TX tag
  36 + * @rx_uses_md_dst: whether MACsec device offload supports sk_buff md_dst
  37   */
  38  struct macsec_ops {
  39         /* Device wide */
  40 @@ -352,6 +353,7 @@ struct macsec_ops {
  41                                  struct sk_buff *skb);
  42         unsigned int needed_headroom;
  43         unsigned int needed_tailroom;
  44 +       bool rx_uses_md_dst;
  45  };
  46
  47  void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa);