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qemu-patch-raspberry4
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dp8393x: Always update RRA pointers and sequence numbers 

These operations need to take place regardless of whether or not
rx descriptors have been used up (that is, EOL flag was observed).

The algorithm is now the same for a packet that was withheld as for
a packet that was not.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Jason Wang <jasowang@redhat.com>
stable-5.0
Finn Thain 2020-01-29 20:27:49 +11:00 committed by Jason Wang
parent d9fae13196
commit 80b60673ea
1 changed files with 7 additions and 5 deletions
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12
hw/net/dp8393x.c
View File

@ -901,12 +901,14 @@ static ssize_t dp8393x_receive(NetClientState *nc, const uint8_t * buf,
/* Move to next descriptor */
s->regs[SONIC_CRDA] = s->regs[SONIC_LLFA];
s->regs[SONIC_ISR] |= SONIC_ISR_PKTRX;
s->regs[SONIC_RSC] = (s->regs[SONIC_RSC] & 0xff00) | (((s->regs[SONIC_RSC] & 0x00ff) + 1) & 0x00ff);
}
if (s->regs[SONIC_RCR] & SONIC_RCR_LPKT) {
/* Read next RRA */
dp8393x_do_read_rra(s);
}
s->regs[SONIC_RSC] = (s->regs[SONIC_RSC] & 0xff00) |
((s->regs[SONIC_RSC] + 1) & 0x00ff);
if (s->regs[SONIC_RCR] & SONIC_RCR_LPKT) {
/* Read next RRA */
dp8393x_do_read_rra(s);
}
/* Done */