diff options
| author |   Vladimir Oltean <vladimir.oltean@nxp.com> | 2021-08-10 16:13:55 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-08-11 14:44:58 +0100 |
| commit | 5d928ff4865641309e39e9ec8eec1022f8a0c0ac (patch) | |
| tree | 7d0e8c2a82f105cfb32f73f0167456abfe1ec443 /net/dsa/tag_sja1105.c | |
| parent | net: dsa: create a helper which allocates space for EtherType DSA headers (diff) | |
| download | linux-dev-5d928ff4865641309e39e9ec8eec1022f8a0c0ac.tar.xz linux-dev-5d928ff4865641309e39e9ec8eec1022f8a0c0ac.zip | |
net: dsa: create a helper for locating EtherType DSA headers on RX
It seems that protocol tagging driver writers are always surprised about
the formula they use to reach their EtherType header on RX, which
becomes apparent from the fact that there are comments in multiple
drivers that mention the same information.
Create a helper that returns a void pointer to skb->data - 2, as well as
centralize the explanation why that is the case.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/tag_sja1105.c')
| -rw-r--r-- | net/dsa/tag_sja1105.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c index 03d500236e0e..4f90e2756124 100644 --- a/net/dsa/tag_sja1105.c +++ b/net/dsa/tag_sja1105.c @@ -442,11 +442,11 @@ static struct sk_buff *sja1105_rcv(struct sk_buff *skb, static struct sk_buff *sja1110_rcv_meta(struct sk_buff *skb, u16 rx_header) { + u8 *buf = dsa_etype_header_pos_rx(skb) + SJA1110_HEADER_LEN; int switch_id = SJA1110_RX_HEADER_SWITCH_ID(rx_header); int n_ts = SJA1110_RX_HEADER_N_TS(rx_header); struct net_device *master = skb->dev; struct dsa_port *cpu_dp; - u8 *buf = skb->data + 2; struct dsa_switch *ds; int i; |