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| author | George McCollister <george.mccollister@gmail.com> | 2021-03-05 23:24:45 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-05 23:42:55 +0100 |
| commit | 3e21a10fdea3c2e4e4d1b72cb9d720256461af40 (patch) | |
| tree | 65e34ca8a970957fe1883989547614b6b22bece9 /drivers | |
| parent | gianfar: fix jumbo packets+napi+rx overrun crash (diff) | |
| download | linux-3e21a10fdea3c2e4e4d1b72cb9d720256461af40.tar.xz linux-3e21a10fdea3c2e4e4d1b72cb9d720256461af40.zip | |
lan743x: trim all 4 bytes of the FCS; not just 2
Trim all 4 bytes of the received FCS; not just 2 of them. Leaving 2
bytes of the FCS on the frame breaks DSA tailing tag drivers.
Fixes: a8db76d40e4d ("lan743x: boost performance on cpu archs w/o dma cache snooping")
Signed-off-by: George McCollister <george.mccollister@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index dbdfabff3b00..1c3e204d727c 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -2040,7 +2040,7 @@ lan743x_rx_trim_skb(struct sk_buff *skb, int frame_length) dev_kfree_skb_irq(skb); return NULL; } - frame_length = max_t(int, 0, frame_length - RX_HEAD_PADDING - 2); + frame_length = max_t(int, 0, frame_length - RX_HEAD_PADDING - 4); if (skb->len > frame_length) { skb->tail -= skb->len - frame_length; skb->len = frame_length; |