[RFC][PATCH 10/45] msix: Factor out msix_message_from_vector

[Jan Kiszka <jan.kiszka@xxxxxxxxxxx>]

This helper will also be used by the upcoming config notifier.

Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
 hw/msix.c |   19 +++++++++++++------
 1 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/hw/msix.c b/hw/msix.c
index 04e08e5..50fa504 100644
--- a/hw/msix.c
+++ b/hw/msix.c
@@ -33,6 +33,15 @@
 #define MSIX_PAGE_PENDING (MSIX_PAGE_SIZE / 2)
 #define MSIX_MAX_ENTRIES 32
 
+static void msix_message_from_vector(PCIDevice *dev, unsigned vector,
+                                     MSIMessage *msg)
+{
+    uint8_t *table_entry = dev->msix_table_page + vector * PCI_MSIX_ENTRY_SIZE;
+
+    msg->address = pci_get_quad(table_entry + PCI_MSIX_ENTRY_LOWER_ADDR);
+    msg->data = pci_get_long(table_entry + PCI_MSIX_ENTRY_DATA);
+}
+
 /* KVM specific MSIX helpers */
 static void kvm_msix_free(PCIDevice *dev)
 {
@@ -453,9 +462,7 @@ uint32_t msix_bar_size(PCIDevice *dev)
 /* Send an MSI-X message */
 void msix_notify(PCIDevice *dev, unsigned vector)
 {
-    uint8_t *table_entry = dev->msix_table_page + vector * PCI_MSIX_ENTRY_SIZE;
-    uint64_t address;
-    uint32_t data;
+    MSIMessage msg;
 
     if (vector >= dev->msix_entries_nr || !dev->msix_entry_used[vector])
         return;
@@ -469,9 +476,9 @@ void msix_notify(PCIDevice *dev, unsigned vector)
         return;
     }
 
-    address = pci_get_quad(table_entry + PCI_MSIX_ENTRY_LOWER_ADDR);
-    data = pci_get_long(table_entry + PCI_MSIX_ENTRY_DATA);
-    stl_le_phys(address, data);
+    msix_message_from_vector(dev, vector, &msg);
+
+    stl_le_phys(msg.address, msg.data);
 }
 
 void msix_reset(PCIDevice *dev)
-- 
1.7.3.4

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