diff options
| author | CoprDistGit <infra@openeuler.org> | 2023-10-30 11:56:48 +0000 |
|---|---|---|
| committer | CoprDistGit <infra@openeuler.org> | 2023-10-30 11:56:48 +0000 |
| commit | 1dae37b163e1e08e719ac06fa86b3414b4ddfb2b (patch) | |
| tree | d6c29b92e733448b00701f46c85d08ecc4a5fbbb /0020-OvmfPkg-VirtioNetDxe-Extend-the-RxBufferSize-to-avoi.patch | |
| parent | 8a55803b9ffda4b5bd4f5bbb9767a617620266ae (diff) | |
automatic import of edk2openeuler22.03_LTS
Diffstat (limited to '0020-OvmfPkg-VirtioNetDxe-Extend-the-RxBufferSize-to-avoi.patch')
| -rw-r--r-- | 0020-OvmfPkg-VirtioNetDxe-Extend-the-RxBufferSize-to-avoi.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/0020-OvmfPkg-VirtioNetDxe-Extend-the-RxBufferSize-to-avoi.patch b/0020-OvmfPkg-VirtioNetDxe-Extend-the-RxBufferSize-to-avoi.patch new file mode 100644 index 0000000..a4db4de --- /dev/null +++ b/0020-OvmfPkg-VirtioNetDxe-Extend-the-RxBufferSize-to-avoi.patch @@ -0,0 +1,50 @@ +From 85a19a714c4b4702edc59db0a3419f48fffe2b0a Mon Sep 17 00:00:00 2001 +From: Jinhua Cao <caojinhua1@huawei.com> +Date: Thu, 17 Feb 2022 17:38:41 +0800 +Subject: [PATCH] OvmfPkg: VirtioNetDxe: Extend the RxBufferSize to avoid data + truncation + +1822 net card needs at least 1536 bytes for DMA, even we never negotiate +VIRTIO_NET_F_MRG_RXBUF. The original max size of packet is 15144 which would +cause data trucation. Now we extend the RxBufSize to 9014(Jumbo Frame type) +so that we can avoid it. + +Signed-off-by: Jinhua Cao <caojinhua1@huawei.com> +--- + OvmfPkg/Include/IndustryStandard/Virtio095Net.h | 7 +++++++ + OvmfPkg/VirtioNetDxe/SnpInitialize.c | 3 ++- + 2 files changed, 9 insertions(+), 1 deletion(-) + +diff --git a/OvmfPkg/Include/IndustryStandard/Virtio095Net.h b/OvmfPkg/Include/IndustryStandard/Virtio095Net.h +index 9c0ed5ed24..28f5cc0899 100644 +--- a/OvmfPkg/Include/IndustryStandard/Virtio095Net.h ++++ b/OvmfPkg/Include/IndustryStandard/Virtio095Net.h +@@ -88,4 +88,11 @@ typedef struct { + #define VIRTIO_NET_S_LINK_UP BIT0
+ #define VIRTIO_NET_S_ANNOUNCE BIT1
+
++//
++// 1822 net card needs at least 1536 bytes for DMA, even we never negotiate
++// VIRTIO_NET_F_MRG_RXBUF. The original max size of packet is 15144 which would
++// cause data trucation. Now we extend the RxBufSize to 9014(Jumbo Frame type)
++// so that we can avoid it.
++#define VIRTIO_RXBUF_JUMBO_PADDING 7500
++
+ #endif // _VIRTIO_0_9_5_NET_H_
+diff --git a/OvmfPkg/VirtioNetDxe/SnpInitialize.c b/OvmfPkg/VirtioNetDxe/SnpInitialize.c +index bb3b552d68..6febfea3bb 100644 +--- a/OvmfPkg/VirtioNetDxe/SnpInitialize.c ++++ b/OvmfPkg/VirtioNetDxe/SnpInitialize.c +@@ -337,7 +337,8 @@ VirtioNetInitRx ( + // and Ethernet payload).
+ //
+ RxBufSize = VirtioNetReqSize +
+- (Dev->Snm.MediaHeaderSize + Dev->Snm.MaxPacketSize);
++ (Dev->Snm.MediaHeaderSize + Dev->Snm.MaxPacketSize) +
++ VIRTIO_RXBUF_JUMBO_PADDING;
+
+ //
+ // Limit the number of pending RX packets if the queue is big. The division
+-- +2.27.0 + |