add wifi6 8852be driver

hc

2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da

 kernel/drivers/net/ethernet/cadence/macb_main.c
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@@ -884,6 +884,10 @@
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 	}
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 #endif
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 	addr |= MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, desc->addr));
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+#ifdef CONFIG_MACB_USE_HWSTAMP
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+	if (bp->hw_dma_cap & HW_DMA_CAP_PTP)
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+		addr &= ~GEM_BIT(DMA_RXVALID);
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+#endif
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 	return addr;
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 }
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@@ -1963,7 +1967,6 @@
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 	bool cloned = skb_cloned(*skb) || skb_header_cloned(*skb) ||
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 		      skb_is_nonlinear(*skb);
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 	int padlen = ETH_ZLEN - (*skb)->len;
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-	int headroom = skb_headroom(*skb);
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 	int tailroom = skb_tailroom(*skb);
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 	struct sk_buff *nskb;
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 	u32 fcs;
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@@ -1977,9 +1980,6 @@
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 		/* FCS could be appeded to tailroom. */
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 		if (tailroom >= ETH_FCS_LEN)
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 			goto add_fcs;
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-		/* FCS could be appeded by moving data to headroom. */
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-		else if (!cloned && headroom + tailroom >= ETH_FCS_LEN)
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-			padlen = 0;
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 		/* No room for FCS, need to reallocate skb. */
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 		else
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 			padlen = ETH_FCS_LEN;
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@@ -1988,10 +1988,7 @@
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 		padlen += ETH_FCS_LEN;
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 	}
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-	if (!cloned && headroom + tailroom >= padlen) {
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-		(*skb)->data = memmove((*skb)->head, (*skb)->data, (*skb)->len);
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-		skb_set_tail_pointer(*skb, (*skb)->len);
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-	} else {
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+	if (cloned || tailroom < padlen) {
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 		nskb = skb_copy_expand(*skb, 0, padlen, GFP_ATOMIC);
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 		if (!nskb)
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 			return -ENOMEM;