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authorAaro Koskinen <aaro.koskinen@nokia.com>2019-03-27 22:35:38 +0200
committerDavid S. Miller <davem@davemloft.net>2019-03-31 14:00:59 -0700
commit1b746ce8b397e58f9e40ce5c63b7198de6930482 (patch)
tree01263c6fda926c4b0c17406f496d2a115c907757 /drivers/net/ethernet/stmicro/stmmac/enh_desc.c
parent07b3975352374c3f5ebb4a42ef0b253fe370542d (diff)
net: stmmac: don't overwrite discard_frame status
If we have error bits set, the discard_frame status will get overwritten by checksum bit checks, which might set the status back to good one. Fix by checking the COE status only if the frame is good. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/enh_desc.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/enh_desc.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
index e8855e6adb48..c42ef6c729c0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
@@ -231,9 +231,10 @@ static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
* It doesn't match with the information reported into the databook.
* At any rate, we need to understand if the CSUM hw computation is ok
* and report this info to the upper layers. */
- ret = enh_desc_coe_rdes0(!!(rdes0 & RDES0_IPC_CSUM_ERROR),
- !!(rdes0 & RDES0_FRAME_TYPE),
- !!(rdes0 & ERDES0_RX_MAC_ADDR));
+ if (likely(ret == good_frame))
+ ret = enh_desc_coe_rdes0(!!(rdes0 & RDES0_IPC_CSUM_ERROR),
+ !!(rdes0 & RDES0_FRAME_TYPE),
+ !!(rdes0 & ERDES0_RX_MAC_ADDR));
if (unlikely(rdes0 & RDES0_DRIBBLING))
x->dribbling_bit++;