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realtek: eth: prepare napi receive for fragments

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Reorder the code around napi_gro_receive() so that it fits nicely
for the upcoming fragment handling. For this relocate the FCS
stripping and eth_type_trans() calls short before the handover
when the packet is fully built.

Link: https://github.com/openwrt/openwrt/pull/24245
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
This commit is contained in:
Markus Stockhausen
2026-07-21 09:30:09 +02:00
parent cba031de5d
commit 39d466aba3
1 changed files with 13 additions and 6 deletions
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target/linux/realtek/files-6.18/drivers/net/ethernet/rtl838x_eth.c
+13 -6
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@@ -1141,7 +1141,7 @@ static int rteth_hw_receive(struct net_device *dev, int ring, int budget)
break;
packet = &ctrl->rx_data[ring].packet[slot];
len = packet->len - ETH_FCS_LEN;
len = packet->len;
is_tail = !packet->more;
if (is_tail)
work_done++;
@@ -1192,7 +1192,6 @@ static int rteth_hw_receive(struct net_device *dev, int ring, int budget)
skb->offload_fwd_mark = 1;
}
skb->protocol = eth_type_trans(skb, dev);
if (dev->features & NETIF_F_RXCSUM) {
if (tag.crc_error)
skb_checksum_none_assert(skb);
@@ -1200,10 +1199,18 @@ static int rteth_hw_receive(struct net_device *dev, int ring, int budget)
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
rx_packets++;
rx_bytes += len;
napi_gro_receive(&ctrl->rx_qs[ring].napi, skb);
if (is_tail && skb) {
if (unlikely(skb->len < ETH_HLEN + ETH_FCS_LEN)) {
dev->stats.rx_errors += rteth_free_skb(&skb);
} else {
pskb_trim(skb, skb->len - ETH_FCS_LEN);
rx_bytes += skb->len;
rx_packets++;
skb->protocol = eth_type_trans(skb, dev);
napi_gro_receive(&ctrl->rx_qs[ring].napi, skb);
skb = NULL;
}
}
recycle:
dma_wmb();
ctrl->rx_data[ring].ring[slot] = packet_dma | RING_OWN_HW;