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net: ravb: Simplify UDP TX checksum offload

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The GbEth IP will pass through a zero UDP checksum without asserting any
error flags so we do not need to resort to software checksum calculation
in this case.

Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
This commit is contained in:
Paul Barker 2024-10-15 14:36:31 +01:00 committed by Andrew Lunn
parent 4574ba5b71
commit e63b5fd02a
1 changed files with 1 additions and 10 deletions
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11
drivers/net/ethernet/renesas/ravb_main.c
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@ -2075,20 +2075,11 @@ static bool ravb_can_tx_csum_gbeth(struct sk_buff *skb)
switch (ip->protocol) { switch (ip->protocol) {
case IPPROTO_TCP: case IPPROTO_TCP:
break;
case IPPROTO_UDP: case IPPROTO_UDP:
/* If the checksum value in the UDP header field is 0, TOE does return true;
* not calculate checksum for UDP part of this frame as it is
* optional function as per standards.
*/
if (udp_hdr(skb)->check == 0)
return false;
break;
default: default:
return false; return false;
} }
return true;
} }
/* Packet transmit function for Ethernet AVB */ /* Packet transmit function for Ethernet AVB */