diff options
| author | Antoine Tenart <antoine.tenart@bootlin.com> | 2018-10-11 09:12:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-11 10:00:27 -0700 |
| commit | 60f8e67d980a5c4d3520378141f4d422f5f7231b (patch) | |
| tree | bba73848cdd1ee9a6fafaff7986dc561959f5f77 /drivers | |
| parent | b7ec45a868af36d0aaffbfed9de4ce53b5eecb22 (diff) | |
| download | linux-60f8e67d980a5c4d3520378141f4d422f5f7231b.tar.bz2 | |
net: mscc: allow extracting the FCS into the skb
This patch adds support for the NETIF_F_RXFCS feature in the Mscc
Ethernet driver. This feature is disabled by default and allow a user
to request the driver not to drop the FCS and to extract it into the skb
for debugging purposes.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot_board.c | 7 |
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 8f11fdba8d0e..9b8a17ee3cb3 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1620,7 +1620,7 @@ int ocelot_probe_port(struct ocelot *ocelot, u8 port, dev->ethtool_ops = &ocelot_ethtool_ops; dev->switchdev_ops = &ocelot_port_switchdev_ops; - dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; + dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS; dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN); diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c index 0cf0b0935b3b..4c23d18bbf44 100644 --- a/drivers/net/ethernet/mscc/ocelot_board.c +++ b/drivers/net/ethernet/mscc/ocelot_board.c @@ -128,11 +128,16 @@ static irqreturn_t ocelot_xtr_irq_handler(int irq, void *arg) len += sz; } while (len < buf_len); - /* Read the FCS and discard it */ + /* Read the FCS */ sz = ocelot_rx_frame_word(ocelot, grp, false, &val); /* Update the statistics if part of the FCS was read before */ len -= ETH_FCS_LEN - sz; + if (unlikely(dev->features & NETIF_F_RXFCS)) { + buf = (u32 *)skb_put(skb, ETH_FCS_LEN); + *buf = val; + } + if (sz < 0) { err = sz; break; |