Network Packet Buffers: raspberrypi: variable uchar *net_rx_packets[PKTBUFSRX] in net/net.c
Simon
Is it possible to modify the network driver for the raspberry pi to use the buffer pool defined in net.c?
It appears to have a single buffer, defined in the driver.
In addition the buffer pool should be defined in memory outside the u-boot image. With the current definition is the buffer pool a part of the u-boot image?
Thanks
Duncan Hare
Hi Duncan,
Quoted 10 lines · Duncan Hare
Simon
Is it possible to modify the network driver for the raspberry pi to use the buffer pool defined in
net.c?It appears to have a single buffer, defined in the driver.
In addition the buffer pool should be defined in memory outside the u-boot image. With the current definition is the buffer pool a part of the u-boot image?
Are you referring to the USB driver? If so, which one? Normally the buffers are in BSS if they are not allocated with malloc(). So the buffers are not in the U-Boot image in flash, but do take up space in RAM at run-time after relocation.
Regards,
Simon
From: Simon Glass <[email protected]>
To: Duncan Hare <[email protected]>
Cc: Joe Hershberger <[email protected]>; U-Boot Mailing List <[email protected]>
Sent: Sunday, April 22, 2018 1:15 PM
Subject: Re: Network Packet Buffers: raspberrypi: variable uchar *net_rx_packets[PKTBUFSRX] in net/net.c
Hi Duncan,
Quoted 6 lines · Duncan Hare
Quoted 5 lines
Simon
Is it possible to modify the network driver for the raspberry pi to use the buffer pool defined in
net.c?
Quoted 7 lines
Quoted 5 lines
It appears to have a single buffer, defined in the driver.
In addition the buffer pool should be defined in memory outside the u-boot image. With the current definition is the buffer pool a part of the u-boot image?
Are you referring to the USB driver? If so, which one? Normally the buffers are in BSS if they are not allocated with
malloc(). So the buffers are not in the U-Boot image in flash, >but do take up space in RAM at run-time after relocation.
Do not recall the filename of the driver.
Quoted 2 lines
Regards,
Simon
Hi Simon
Ethernet driver. But it might also be the usb driver . I don't know the detail at that level of the raspberry soc. Â Duncan Hare
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