network: Introduce SR-IOV

SR-IOV provides the ability to partition a single physical PCI
resource into virtual PCI functions which can then be injected in
to a VM. In the case of network VFs, SR-IOV improves north-south n
etwork performance (that is, traffic with endpoints outside the
host machine) by allowing traffic to bypass the host machine’s network stack.

1 files changed, 42 insertions, 0 deletions

diff --git a/src/network/networkd-sriov.h b/src/network/networkd-sriov.h
new file mode 100644
index 0000000000..d9668d7b65
--- /dev/null
+++ b/src/network/networkd-sriov.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: LGPL-2.1+
+ * Copyright © 2020 VMware, Inc. */
+#pragma once
+
+#include <linux/if_link.h>
+
+#include "conf-parser.h"
+#include "networkd-link.h"
+#include "networkd-network.h"
+#include "networkd-util.h"
+
+typedef enum SRIOVLinkState {
+        SR_IOV_LINK_STATE_AUTO = IFLA_VF_LINK_STATE_AUTO,
+        SR_IOV_LINK_STATE_ENABLE = IFLA_VF_LINK_STATE_ENABLE,
+        SR_IOV_LINK_STATE_DISABLE = IFLA_VF_LINK_STATE_DISABLE,
+        _SR_IOV_LINK_STATE_MAX,
+        _SR_IOV_LINK_STATE_INVALID = -1,
+} SRIOVLinkState;
+
+typedef struct SRIOV {
+        NetworkConfigSection *section;
+        Network *network;
+
+        uint32_t vf;   /* 0 - 2147483646 */
+        uint32_t vlan; /* 0 - 4095, 0 disables VLAN filter */
+        uint32_t qos;
+        int vf_spoof_check_setting;
+        int query_rss;
+        int trust;
+        SRIOVLinkState link_state;
+} SRIOV;
+
+SRIOV *sr_iov_free(SRIOV *sr_iov);
+
+int sr_iov_configure(Link *link, SRIOV *sr_iov);
+int sr_iov_section_verify(SRIOV *sr_iov);
+
+DEFINE_NETWORK_SECTION_FUNCTIONS(SRIOV, sr_iov_free);
+
+CONFIG_PARSER_PROTOTYPE(config_parse_sr_iov_uint32);
+CONFIG_PARSER_PROTOTYPE(config_parse_sr_iov_boolean);
+CONFIG_PARSER_PROTOTYPE(config_parse_sr_iov_link_state);