From f0d58c4b501dd993f6e4cbbd5e77ae0b0aed071f Mon Sep 17 00:00:00 2001 From: Ivan Malov Date: Mon, 28 Dec 2020 06:00:23 +0300 Subject: [PATCH] common/sfc_efx/base: fix MPORT related byte order handling MPORT values derived by helper functions are little-endian. At the same time, MCDIs which consume these values perform one more host-order to little-endian conversion internally. Fix the helper functions to return host-order MPORT values. Fixes: 370ed675a952 ("common/sfc_efx/base: support setting PPORT in match spec") Fixes: bb024542fffd ("common/sfc_efx/base: add API for adding action drop") Fixes: 097058033f03 ("common/sfc_efx/base: add API to get mport of PF/VF") Cc: stable@dpdk.org Reported-by: Andy Moreton Reviewed-by: Andy Moreton Reviewed-by: Andrew Rybchenko Signed-off-by: Ivan Malov --- drivers/common/sfc_efx/base/efx_mae.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/common/sfc_efx/base/efx_mae.c b/drivers/common/sfc_efx/base/efx_mae.c index a54d5f6e6c..22f29d454c 100644 --- a/drivers/common/sfc_efx/base/efx_mae.c +++ b/drivers/common/sfc_efx/base/efx_mae.c @@ -593,7 +593,13 @@ efx_mae_mport_by_phy_port( MAE_MPORT_SELECTOR_PPORT_ID, phy_port); memset(mportp, 0, sizeof (*mportp)); - mportp->sel = dword.ed_u32[0]; + /* + * The constructed DWORD is little-endian, + * but the resulting value is meant to be + * passed to MCDIs, where it will undergo + * host-order to little endian conversion. + */ + mportp->sel = EFX_DWORD_FIELD(dword, EFX_DWORD_0); return (0); @@ -630,7 +636,13 @@ efx_mae_mport_by_pcie_function( MAE_MPORT_SELECTOR_FUNC_VF_ID, vf); memset(mportp, 0, sizeof (*mportp)); - mportp->sel = dword.ed_u32[0]; + /* + * The constructed DWORD is little-endian, + * but the resulting value is meant to be + * passed to MCDIs, where it will undergo + * host-order to little endian conversion. + */ + mportp->sel = EFX_DWORD_FIELD(dword, EFX_DWORD_0); return (0); @@ -1319,7 +1331,13 @@ efx_mae_action_set_populate_drop( EFX_POPULATE_DWORD_1(dword, MAE_MPORT_SELECTOR_FLAT, MAE_MPORT_SELECTOR_NULL); - mport.sel = dword.ed_u32[0]; + /* + * The constructed DWORD is little-endian, + * but the resulting value is meant to be + * passed to MCDIs, where it will undergo + * host-order to little endian conversion. + */ + mport.sel = EFX_DWORD_FIELD(dword, EFX_DWORD_0); arg = (const uint8_t *)&mport.sel; -- 2.20.1