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net: stmmac: add stmmac_tso_header_size()

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We will need to compute the size of the protocol headers in two places,
so move this into a separate function.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1w7ptJ-0000000Eat5-2ZlA@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2026-04-01 08:21:29 +01:00 committed by Jakub Kicinski
parent e32820264c
commit f799b5dab9
1 changed files with 15 additions and 5 deletions
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20
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@ -4373,6 +4373,18 @@ static void stmmac_flush_tx_descriptors(struct stmmac_priv *priv, int queue)
stmmac_set_queue_tx_tail_ptr(priv, tx_q, queue, tx_q->cur_tx);
}
static size_t stmmac_tso_header_size(struct sk_buff *skb)
{
size_t size;
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
size = skb_transport_offset(skb) + sizeof(struct udphdr);
else
size = skb_tcp_all_headers(skb);
return size;
}
/**
* stmmac_tso_xmit - Tx entry point of the driver for oversized frames (TSO)
* @skb : the socket buffer
@ -4444,13 +4456,11 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
first_tx = tx_q->cur_tx;
/* Compute header lengths */
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
proto_hdr_len = skb_transport_offset(skb) + sizeof(struct udphdr);
proto_hdr_len = stmmac_tso_header_size(skb);
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4)
hdr = sizeof(struct udphdr);
} else {
proto_hdr_len = skb_tcp_all_headers(skb);
else
hdr = tcp_hdrlen(skb);
}
/* Desc availability based on threshold should be enough safe */
if (unlikely(stmmac_tx_avail(priv, queue) <