target/linux/brcm2708/patches-4.19/950-0151-brcmfmac-Disable-ARP-offloading-when-promiscuous.patch

   1 From 80cebfc3a14a2645e99baa0a72587e25961e178f Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Thu, 24 Aug 2017 16:16:16 +0100
   4 Subject: [PATCH 151/703] brcmfmac: Disable ARP offloading when promiscuous
   5
   6 This is a test patch for brcmfmac from Franky Lin at Broadcom to disable
   7 ARP offloading when in promiscuous mode, re-enabling the ability to
   8 sniff ARP packets over WiFi.
   9
  10 See: https://github.com/raspberrypi/linux/issues/2171
  11
  12 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  13 ---
  14  .../net/wireless/broadcom/brcm80211/brcmfmac/core.c   | 11 ++++++-----
  15  .../net/wireless/broadcom/brcm80211/brcmfmac/core.h   |  1 +
  16  2 files changed, 7 insertions(+), 5 deletions(-)
  17
  18 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  19 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
  20 @@ -88,25 +88,25 @@ void brcmf_configure_arp_nd_offload(stru
  21         if (err) {
  22                 brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
  23                           mode, err);
  24 +               err = 0;
  25         } else {
  26                 err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
  27                 if (err) {
  28                         brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
  29                                   enable, err);
  30 -               } else {
  31 +                       err = 0;
  32 +               } else
  33                         brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
  34                                   enable, mode);
  35 -               }
  36         }
  37
  38         err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);
  39 -       if (err) {
  40 +       if (err)
  41                 brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",
  42                           enable, err);
  43 -       } else {
  44 +       else
  45                 brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",
  46                           enable, mode);
  47 -       }
  48  }
  49
  50  static void _brcmf_set_multicast_list(struct work_struct *work)
  51 @@ -172,6 +172,7 @@ static void _brcmf_set_multicast_list(st
  52         if (err < 0)
  53                 brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n",
  54                           err);
  55 +
  56         brcmf_configure_arp_nd_offload(ifp, !cmd_value);
  57  }
  58
  59 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
  60 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
  61 @@ -210,6 +210,7 @@ char *brcmf_ifname(struct brcmf_if *ifp)
  62  struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx);
  63  void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable);
  64  int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked);
  65 +void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable);
  66  struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
  67                               bool is_p2pdev, const char *name, u8 *mac_addr);
  68  void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked);