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From: Nicolai Buchwitz <nb@tipi-net.de>
To: Mohsin Bashir <mohsin.bashr@gmail.com>
Cc: netdev@vger.kernel.org, Andrew Lunn <andrew+netdev@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Doug Berger <opendmb@gmail.com>,
	Florian Fainelli <florian.fainelli@broadcom.com>,
	Broadcom internal kernel review list
	<bcm-kernel-feedback-list@broadcom.com>,
	Vikas Gupta <vikas.gupta@broadcom.com>,
	Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>,
	Bhargava Marreddy <bhargava.marreddy@broadcom.com>,
	Eric Biggers <ebiggers@google.com>, Arnd Bergmann <arnd@arndb.de>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v3 1/6] net: bcmgenet: convert RX path to page_pool
Date: Mon, 30 Mar 2026 23:03:11 +0200	[thread overview]
Message-ID: <b2278e983ce5e3bbaf90a50722233960@tipi-net.de> (raw)
In-Reply-To: <aeaa44fc-d7e2-425e-a7f5-703bc8539f82@gmail.com>

On 30.3.2026 20:15, Mohsin Bashir wrote:
>>   		if (priv->crc_fwd_en) {
>> -			skb_trim(skb, len - ETH_FCS_LEN);
>> +			skb_trim(skb, skb->len - ETH_FCS_LEN);
>>   			len -= ETH_FCS_LEN;
> 
> Looks like 'len' update here is unnecessary since we are overwriting it 
> later anyway?

Good catch, the len = skb->len assignment added in this patch makes len 
-= ETH_FCS_LEN dead code since skb_trim already removed the FCS. Will 
fix in v6.

Thanks
Nicolai

> 
>>   		}
>>   +		/* Set up checksum offload */
>> +		if (dev->features & NETIF_F_RXCSUM) {
>> +			rx_csum = (__force __be16)(status->rx_csum & 0xffff);
>> +			if (rx_csum) {
>> +				skb->csum = (__force __wsum)ntohs(rx_csum);
>> +				skb->ip_summed = CHECKSUM_COMPLETE;
>> +			}
>> +		}
>> +
>> +		len = skb->len;

  reply	other threads:[~2026-03-30 21:03 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-19 11:53 [PATCH net-next v3 0/6] net: bcmgenet: add XDP support Nicolai Buchwitz
2026-03-19 11:53 ` [PATCH net-next v3 1/6] net: bcmgenet: convert RX path to page_pool Nicolai Buchwitz
2026-03-20 17:02   ` Simon Horman
2026-03-30 18:15   ` Mohsin Bashir
2026-03-30 21:03     ` Nicolai Buchwitz [this message]
2026-03-19 11:53 ` [PATCH net-next v3 2/6] net: bcmgenet: register xdp_rxq_info for each RX ring Nicolai Buchwitz
2026-03-19 21:18   ` Justin Chen
2026-03-19 11:53 ` [PATCH net-next v3 3/6] net: bcmgenet: add basic XDP support (PASS/DROP) Nicolai Buchwitz
2026-03-19 21:23   ` Justin Chen
2026-03-30 18:15   ` Mohsin Bashir
2026-03-30 22:01     ` Nicolai Buchwitz
2026-03-30 22:06       ` Florian Fainelli
2026-03-19 11:53 ` [PATCH net-next v3 4/6] net: bcmgenet: add XDP_TX support Nicolai Buchwitz
2026-03-19 21:31   ` Justin Chen
2026-03-20 17:02   ` Simon Horman
2026-03-30 18:15   ` Mohsin Bashir
2026-03-30 21:28     ` Nicolai Buchwitz
2026-03-19 11:53 ` [PATCH net-next v3 5/6] net: bcmgenet: add XDP_REDIRECT and ndo_xdp_xmit support Nicolai Buchwitz
2026-03-19 21:34   ` Justin Chen
2026-03-19 11:53 ` [PATCH net-next v3 6/6] net: bcmgenet: add XDP statistics counters Nicolai Buchwitz

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