queue-4.14/qed-fix-iwarp-syn-packet-mac-address-validation.patch

   1 From 82ccecbbb3c37571b1e4f0a222879c3ad31fded8 Mon Sep 17 00:00:00 2001
   2 From: Michal Kalderon <michal.kalderon@marvell.com>
   3 Date: Mon, 18 Feb 2019 15:24:03 +0200
   4 Subject: qed: Fix iWARP syn packet mac address validation.
   5
   6 [ Upstream commit 8be3dadf04050c2907760ec1955ca1c8fbc25585 ]
   7
   8 The ll2 forwards all syn packets to the driver without validating the mac
   9 address. Add validation check in the driver's iWARP listener flow and drop
  10 the packet if it isn't intended for the device.
  11
  12 Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
  13 Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
  14 Signed-off-by: David S. Miller <davem@davemloft.net>
  15 Signed-off-by: Sasha Levin <sashal@kernel.org>
  16 ---
  17  drivers/net/ethernet/qlogic/qed/qed_iwarp.c | 9 +++++++++
  18  1 file changed, 9 insertions(+)
  19
  20 diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
  21 index eb666877d1aa..bb09f5a9846f 100644
  22 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
  23 +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
  24 @@ -1651,6 +1651,15 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
  25
  26         eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
  27
  28 +       if (!ether_addr_equal(ethh->h_dest,
  29 +                             p_hwfn->p_rdma_info->iwarp.mac_addr)) {
  30 +               DP_VERBOSE(p_hwfn,
  31 +                          QED_MSG_RDMA,
  32 +                          "Got unexpected mac %pM instead of %pM\n",
  33 +                          ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
  34 +               return -EINVAL;
  35 +       }
  36 +
  37         ether_addr_copy(remote_mac_addr, ethh->h_source);
  38         ether_addr_copy(local_mac_addr, ethh->h_dest);
  39
  40 --
  41 2.19.1
  42