Commit 9c11b6b1 authored by Raju Rangoju's avatar Raju Rangoju Committed by Paolo Abeni
Browse files

amd-xgbe: add ethtool jumbo frame selftest 



Adds support for jumbo frame selftest. Works only for
mtu size greater than 1500.

Signed-off-by: default avatarRaju Rangoju <Raju.Rangoju@amd.com>
Link: https://patch.msgid.link/20251031111555.774425-5-Raju.Rangoju@amd.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent d7735c6b

drivers/net/ethernet/amd/xgbe/xgbe-selftest.c

+23 −0
Original line number Diff line number Diff line
@@ -42,11 +42,19 @@ static int xgbe_test_loopback_validate(struct sk_buff *skb, 
	struct tcphdr *th;

	struct udphdr *uh;

	struct iphdr *ih;

	int eat;



	skb = skb_unshare(skb, GFP_ATOMIC);

	if (!skb)

		goto out;



	eat = (skb->tail + skb->data_len) - skb->end;

	if (eat > 0 && skb_shared(skb)) {

		skb = skb_share_check(skb, GFP_ATOMIC);

		if (!skb)

			goto out;

	}



	if (skb_linearize(skb))

		goto out;
@@ -215,6 +223,17 @@ static int xgbe_test_sph(struct xgbe_prv_data *pdata) 
	return 0;

}



static int xgbe_test_jumbo(struct xgbe_prv_data *pdata)

{

	struct net_packet_attrs attr = {};

	int size = pdata->rx_buf_size;



	attr.dst = pdata->netdev->dev_addr;

	attr.max_size = size - ETH_FCS_LEN;



	return __xgbe_test_loopback(pdata, &attr);

}



static const struct xgbe_test xgbe_selftests[] = {

	{

		.name = "MAC Loopback   ",
@@ -228,6 +247,10 @@ static const struct xgbe_test xgbe_selftests[] = { 
		.name = "Split Header   ",

		.lb = XGBE_LOOPBACK_PHY,

		.fn = xgbe_test_sph,

	}, {

		.name = "Jumbo Frame    ",

		.lb = XGBE_LOOPBACK_PHY,

		.fn = xgbe_test_jumbo,

	},

};