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net: add return value to packet receive handler

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This allows us to handle queue full conditions rather than dropping
the packet on the floor.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
This commit is contained in:
Mark McLoughlin 2009-05-18 13:40:55 +01:00
parent e3f5ec2b5e
commit 4f1c942b7f
18 changed files with 126 additions and 95 deletions
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7
hw/pcnet.c
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@ -1076,16 +1076,17 @@ static int pcnet_can_receive(VLANClientState *vc)
#define MIN_BUF_SIZE 60
static void pcnet_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
static ssize_t pcnet_receive(VLANClientState *vc, const uint8_t *buf, size_t size_)
{
PCNetState *s = vc->opaque;
int is_padr = 0, is_bcast = 0, is_ladr = 0;
uint8_t buf1[60];
int remaining;
int crc_err = 0;
int size = size_;
if (CSR_DRX(s) || CSR_STOP(s) || CSR_SPND(s) || !size)
return;
return -1;
#ifdef PCNET_DEBUG
printf("pcnet_receive size=%d\n", size);
@ -1252,6 +1253,8 @@ static void pcnet_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
pcnet_poll(s);
pcnet_update_irq(s);
return size_;
}
static void pcnet_transmit(PCNetState *s)