iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: dsa: create a helper for locating EtherType DSA headers on TX

Browse Source 
Create a similar helper for locating the offset to the DSA header
relative to skb->data, and make the existing EtherType header taggers to
use it.

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>
This commit is contained in:
Vladimir Oltean
2021-08-10 16:13:56 +03:00
committed by David S. Miller
parent 5d928ff486
commit a72808b658
7 changed files with 23 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
net/dsa/dsa_priv.h
View File

@ -521,6 +521,15 @@ static inline void *dsa_etype_header_pos_rx(struct sk_buff *skb)
return skb->data - 2;
}
/* On TX, skb->data points to skb_mac_header(skb), which means that EtherType
* header taggers start exactly where the EtherType is (the EtherType is
* treated as part of the DSA header).
*/
static inline void *dsa_etype_header_pos_tx(struct sk_buff *skb)
{
return skb->data + 2 * ETH_ALEN;
}
/* switch.c */
int dsa_switch_register_notifier(struct dsa_switch *ds);
void dsa_switch_unregister_notifier(struct dsa_switch *ds);