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driver: ethernet to allow jumbo frames 9000 on rpi 4B #5419

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driver: ethernet to allow jumbo frames 9000 on rpi 4B #5419

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3d83198
Patched broadcom ethernet driver and kernel headers to allow jumbo fr…
delgh1 Apr 1, 2023
b6fd3b2
fixed a comment
delgh1 Apr 2, 2023
7013c2c
Merge pull request #3 from raspberrypi/rpi-6.1.y
delgh1 Apr 4, 2023
55931d0
Merge branch 'raspberrypi:rpi-6.1.y' into dev-rpi-6.1
delgh1 Apr 26, 2023
9c0989b
Merge branch 'raspberrypi:rpi-6.1.y' into dev-rpi-6.1
delgh1 May 5, 2023
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4 changes: 2 additions & 2 deletions drivers/net/ethernet/broadcom/genet/bcmgenet.c
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Original file line number Diff line number Diff line change
Expand Up @@ -52,7 +52,7 @@
#define GENET_Q16_TX_BD_CNT \
(TOTAL_DESC - priv->hw_params->tx_queues * priv->hw_params->tx_bds_per_q)

#define RX_BUF_LENGTH 2048
#define RX_BUF_LENGTH 10240
#define SKB_ALIGNMENT 32

/* Tx/Rx DMA register offset, skip 256 descriptors */
Expand Down Expand Up @@ -4117,7 +4117,7 @@ static int bcmgenet_probe(struct platform_device *pdev)

/* Mii wait queue */
init_waitqueue_head(&priv->wq);
/* Always use RX_BUF_LENGTH (2KB) buffer for all chips */
/* Always use RX_BUF_LENGTH buffer for all chips */
priv->rx_buf_len = RX_BUF_LENGTH;
INIT_WORK(&priv->bcmgenet_irq_work, bcmgenet_irq_task);

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4 changes: 2 additions & 2 deletions include/linux/if_vlan.h
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Expand Up @@ -22,8 +22,8 @@
/*
* According to 802.3ac, the packet can be 4 bytes longer. --Klika Jan
*/
#define VLAN_ETH_DATA_LEN 1500 /* Max. octets in payload */
#define VLAN_ETH_FRAME_LEN 1518 /* Max. octets in frame sans FCS */
#define VLAN_ETH_DATA_LEN 9000 /* Max. octets in payload */
#define VLAN_ETH_FRAME_LEN 9018 /* Max. octets in frame sans FCS */

#define VLAN_MAX_DEPTH 8 /* Max. number of nested VLAN tags parsed */

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4 changes: 2 additions & 2 deletions include/uapi/linux/if_ether.h
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Expand Up @@ -33,8 +33,8 @@
#define ETH_TLEN 2 /* Octets in ethernet type field */
#define ETH_HLEN 14 /* Total octets in header. */
#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
#define ETH_DATA_LEN 1500 /* Max. octets in payload */
#define ETH_FRAME_LEN 1514 /* Max. octets in frame sans FCS */
#define ETH_DATA_LEN 9000 /* Max. octets in payload */
#define ETH_FRAME_LEN 9014 /* Max. octets in frame sans FCS */
#define ETH_FCS_LEN 4 /* Octets in the FCS */

#define ETH_MIN_MTU 68 /* Min IPv4 MTU per RFC791 */
Expand Down