From: Akihiko Odaki <akihiko.odaki@daynix.com>
Date: Tue, 23 May 2023 02:43:25 +0000 (+0900)
Subject: igb: Implement MSI-X single vector mode
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=191e8bde88a47303eed697a1fb56d19eb0a2a759;p=qemu.git

igb: Implement MSI-X single vector mode

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Sriram Yagnaraman <sriram.yagnaraman@est.tech>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---

diff --git a/hw/net/igb_core.c b/hw/net/igb_core.c
index c954369964..6d55b43fb4 100644
--- a/hw/net/igb_core.c
+++ b/hw/net/igb_core.c
@@ -1873,7 +1873,7 @@ igb_update_interrupt_state(IGBCore *core)
 
     icr = core->mac[ICR] & core->mac[IMS];
 
-    if (msix_enabled(core->owner)) {
+    if (core->mac[GPIE] & E1000_GPIE_MSIX_MODE) {
         if (icr) {
             causes = 0;
             if (icr & E1000_ICR_DRSTA) {
@@ -1908,7 +1908,12 @@ igb_update_interrupt_state(IGBCore *core)
         trace_e1000e_irq_pending_interrupts(core->mac[ICR] & core->mac[IMS],
                                             core->mac[ICR], core->mac[IMS]);
 
-        if (msi_enabled(core->owner)) {
+        if (msix_enabled(core->owner)) {
+            if (icr) {
+                trace_e1000e_irq_msix_notify_vec(0);
+                msix_notify(core->owner, 0);
+            }
+        } else if (msi_enabled(core->owner)) {
             if (icr) {
                 msi_notify(core->owner, 0);
             }