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qemu/net: flag to control the number of vectors a nic has

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Add an option to specify the number of MSI-X vectors for PCI NIC cards. This
can also be used to disable MSI-X, for compatibility with old qemu. This
option currently only affects virtio cards.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2009-06-21 19:51:18 +03:00 • committed by Anthony Liguori
parent 566e2d3e88
commit ffe6370c9f
4 changed files with 33 additions and 8 deletions
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4
net.h
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@ -84,6 +84,9 @@ int do_set_link(Monitor *mon, const char *name, const char *up_or_down);
/* NIC info */
#define MAX_NICS 8
enum {
NIC_NVECTORS_UNSPECIFIED = -1
};
struct NICInfo {
uint8_t macaddr[6];
@ -94,6 +97,7 @@ struct NICInfo {
void *private;
int used;
int bootable;
int nvectors;
};
extern int nb_nics;