</variablelist>
</refsect1>
+ <refsect1>
+ <title>[SR-IOV] Section Options</title>
+ <para>The <literal>[SR-IOV]</literal> section accepts the
+ following keys. Specify several <literal>[SR-IOV]</literal>
+ sections to configure several SR-IOVs. SR-IOV provides the ability to partition a single physical PCI resource
+ into virtual PCI functions which can then be injected into a VM. In the case of network VFs, SR-IOV improves
+ north-south network performance (that is, traffic with endpoints outside the host machine) by allowing traffic to
+ bypass the host machine’s network stack.</para>
+
+ <variablelist class='network-directives'>
+ <varlistentry>
+ <term><varname>VirtualFunction=</varname></term>
+ <listitem>
+ <para>Specifies a Virtual Function (VF), lightweight PCIe function designed solely to move data
+ in and out. Takes an unsigned integer in the range 0..2147483646. This option is compulsory.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>VLANId=</varname></term>
+ <listitem>
+ <para>Specifies VLAN ID of the virtual function. Takes an unsigned integer in the range 1..4095.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>QualityOfService=</varname></term>
+ <listitem>
+ <para>Specifies quality of service of the virtual function. Takes an unsigned integer in the range 1..4294967294.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>MACSpoofCheck=</varname></term>
+ <listitem>
+ <para>Takes a boolean. Controls the MAC spoof checking. When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>QueryReceiveSideScaling=</varname></term>
+ <listitem>
+ <para>Takes a boolean. Toggle the ability of querying the receive side scaling (RSS)
+ configuration of the virtual function (VF). The VF RSS information like RSS hash key may be
+ considered sensitive on some devices where this information is shared between VF and the
+ physical function (PF). When unset, the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>Trust=</varname></term>
+ <listitem>
+ <para>Takes a boolean. Allows to set trust mode of the virtual function (VF). When set, VF
+ users can set a specific feature which may impact security and/or performance. When unset,
+ the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>LinkState=</varname></term>
+ <listitem>
+ <para>Allows to set the link state of the virtual function (VF). Takes a boolean or a
+ special value <literal>auto</literal>. Setting to <literal>auto</literal> means a
+ reflection of the physical function (PF) link state, <literal>yes</literal> lets the VF to
+ communicate with other VFs on this host even if the PF link state is down,
+ <literal>no</literal> causes the hardware to drop any packets sent by the VF. When unset,
+ the kernel's default will be used.</para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>[Network] Section Options</title>
--- /dev/null
+/* SPDX-License-Identifier: LGPL-2.1+
+ * Copyright © 2020 VMware, Inc. */
+
+#include "alloc-util.h"
+#include "netlink-util.h"
+#include "networkd-manager.h"
+#include "networkd-sriov.h"
+#include "parse-util.h"
+#include "set.h"
+#include "string-util.h"
+
+static int sr_iov_new(SRIOV **ret) {
+ SRIOV *sr_iov;
+
+ sr_iov = new(SRIOV, 1);
+ if (!sr_iov)
+ return -ENOMEM;
+
+ *sr_iov = (SRIOV) {
+ .vf = (uint32_t) -1,
+ .vf_spoof_check_setting = -1,
+ .trust = -1,
+ .query_rss = -1,
+ .link_state = _SR_IOV_LINK_STATE_INVALID,
+ };
+
+ *ret = TAKE_PTR(sr_iov);
+
+ return 0;
+}
+
+static int sr_iov_new_static(Network *network, const char *filename, unsigned section_line, SRIOV **ret) {
+ _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
+ _cleanup_(sr_iov_freep) SRIOV *sr_iov = NULL;
+ SRIOV *existing = NULL;
+ int r;
+
+ assert(network);
+ assert(ret);
+ assert(filename);
+ assert(section_line > 0);
+
+ r = network_config_section_new(filename, section_line, &n);
+ if (r < 0)
+ return r;
+
+ existing = ordered_hashmap_get(network->sr_iov_by_section, n);
+ if (existing) {
+ *ret = existing;
+ return 0;
+ }
+
+ r = sr_iov_new(&sr_iov);
+ if (r < 0)
+ return r;
+
+ sr_iov->network = network;
+ sr_iov->section = TAKE_PTR(n);
+
+ r = ordered_hashmap_ensure_allocated(&network->sr_iov_by_section, &network_config_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = ordered_hashmap_put(network->sr_iov_by_section, sr_iov->section, sr_iov);
+ if (r < 0)
+ return r;
+
+ *ret = TAKE_PTR(sr_iov);
+ return 0;
+}
+
+SRIOV *sr_iov_free(SRIOV *sr_iov) {
+ if (!sr_iov)
+ return NULL;
+
+ if (sr_iov->network && sr_iov->section)
+ ordered_hashmap_remove(sr_iov->network->sr_iov_by_section, sr_iov->section);
+
+ network_config_section_free(sr_iov->section);
+
+ return mfree(sr_iov);
+}
+
+static int sr_iov_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ assert(link);
+ assert(link->sr_iov_messages > 0);
+ link->sr_iov_messages--;
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ r = sd_netlink_message_get_errno(m);
+ if (r < 0 && r != -EEXIST) {
+ log_link_message_error_errno(link, m, r, "Could not set up SR-IOV");
+ link_enter_failed(link);
+ return 1;
+ }
+
+ if (link->sr_iov_messages == 0) {
+ log_link_debug(link, "SR-IOV configured");
+ link->sr_iov_configured = true;
+ link_check_ready(link);
+ }
+
+ return 1;
+}
+
+int sr_iov_configure(Link *link, SRIOV *sr_iov) {
+ _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+ int r;
+
+ assert(link);
+ assert(link->manager);
+ assert(link->manager->rtnl);
+ assert(link->ifindex > 0);
+
+ log_link_debug(link, "Setting SR-IOV virtual function %"PRIu32, sr_iov->vf);
+
+ r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
+
+ r = sd_netlink_message_open_container(req, IFLA_VFINFO_LIST);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open IFLA_VFINFO_LIST container: %m");
+
+ r = sd_netlink_message_open_container(req, IFLA_VF_INFO);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open IFLA_VF_INFO container: %m");
+
+ if (sr_iov->vf_spoof_check_setting >= 0) {
+ struct ifla_vf_spoofchk ivs = {
+ .vf = sr_iov->vf,
+ .setting = sr_iov->vf_spoof_check_setting,
+ };
+
+ r = sd_netlink_message_append_data(req, IFLA_VF_SPOOFCHK, &ivs, sizeof(struct ifla_vf_spoofchk));
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_VF_SPOOFCHK: %m");
+ }
+
+ if (sr_iov->query_rss >= 0) {
+ struct ifla_vf_rss_query_en ivs = {
+ .vf = sr_iov->vf,
+ .setting = sr_iov->query_rss,
+ };
+
+ r = sd_netlink_message_append_data(req, IFLA_VF_RSS_QUERY_EN, &ivs, sizeof(struct ifla_vf_rss_query_en));
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_VF_RSS_QUERY_EN: %m");
+ }
+
+ if (sr_iov->trust >= 0) {
+ struct ifla_vf_trust ivt = {
+ .vf = sr_iov->vf,
+ .setting = sr_iov->trust,
+ };
+
+ r = sd_netlink_message_append_data(req, IFLA_VF_TRUST, &ivt, sizeof(struct ifla_vf_trust));
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_VF_TRUST: %m");
+ }
+
+ if (sr_iov->link_state >= 0) {
+ struct ifla_vf_link_state ivl = {
+ .vf = sr_iov->vf,
+ .link_state = sr_iov->link_state,
+ };
+
+ r = sd_netlink_message_append_data(req, IFLA_VF_LINK_STATE, &ivl, sizeof(struct ifla_vf_link_state));
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_VF_LINK_STATE: %m");
+ }
+
+ if (sr_iov->vlan > 0) {
+ /* Because of padding, first the buffer must be initialized with 0. */
+ struct ifla_vf_vlan_info ivvi = {};
+ ivvi.vf = sr_iov->vf;
+ ivvi.vlan = sr_iov->vlan;
+ ivvi.qos = sr_iov->qos;
+ ivvi.vlan_proto = htobe16(ETH_P_8021Q);
+
+ r = sd_netlink_message_open_container(req, IFLA_VF_VLAN_LIST);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not open IFLA_VF_VLAN_LIST container: %m");
+
+ r = sd_netlink_message_append_data(req, IFLA_VF_VLAN_INFO, &ivvi, sizeof(struct ifla_vf_vlan_info));
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not append IFLA_VF_VLAN_INFO: %m");
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close IFLA_VF_VLAN_LIST container: %m");
+ }
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close IFLA_VF_INFO container: %m");
+
+ r = sd_netlink_message_close_container(req);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not close IFLA_VFINFO_LIST container: %m");
+
+ r = netlink_call_async(link->manager->rtnl, NULL, req, sr_iov_handler,
+ link_netlink_destroy_callback, link);
+ if (r < 0)
+ return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
+
+ link_ref(link);
+ link->sr_iov_messages++;
+
+ return 0;
+}
+
+int sr_iov_section_verify(SRIOV *sr_iov) {
+ assert(sr_iov);
+
+ if (section_is_invalid(sr_iov->section))
+ return -EINVAL;
+
+ if (sr_iov->vf == (uint32_t) -1)
+ return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
+ "%s: [SRIOV] section without VirtualFunction= field configured. "
+ "Ignoring [SRIOV] section from line %u.",
+ sr_iov->section->filename, sr_iov->section->line);
+
+ return 0;
+}
+
+int config_parse_sr_iov_uint32(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(sr_iov_free_or_set_invalidp) SRIOV *sr_iov = NULL;
+ Network *network = data;
+ uint32_t k;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = sr_iov_new_static(network, filename, section_line, &sr_iov);
+ if (r < 0)
+ return r;
+
+ if (isempty(rvalue)) {
+ if (streq(lvalue, "VirtualFunction"))
+ sr_iov->vf = (uint32_t) -1;
+ else if (streq(lvalue, "VLANId"))
+ sr_iov->vlan = 0;
+ else if (streq(lvalue, "QualityOfService"))
+ sr_iov->qos = 0;
+ else
+ assert_not_reached("Invalid lvalue");
+
+ TAKE_PTR(sr_iov);
+ return 0;
+ }
+
+ r = safe_atou32(rvalue, &k);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse SR-IOV '%s=', ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ if (streq(lvalue, "VLANId")) {
+ if (k == 0 || k > 4095) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid SR-IOV VLANId: %d", k);
+ return 0;
+ }
+ sr_iov->vlan = k;
+ } else if (streq(lvalue, "VirtualFunction")) {
+ if (k >= INT_MAX) {
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid SR-IOV virtual function: %d", k);
+ return 0;
+ }
+ sr_iov->vf = k;
+ } else if (streq(lvalue, "QualityOfService"))
+ sr_iov->qos = k;
+ else
+ assert_not_reached("Invalid lvalue");
+
+ TAKE_PTR(sr_iov);
+ return 0;
+}
+
+int config_parse_sr_iov_link_state(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(sr_iov_free_or_set_invalidp) SRIOV *sr_iov = NULL;
+ Network *network = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = sr_iov_new_static(network, filename, section_line, &sr_iov);
+ if (r < 0)
+ return r;
+
+ /* Unfortunately, SR_IOV_LINK_STATE_DISABLE is 2, not 0. So, we cannot use
+ * DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN() macro. */
+
+ if (isempty(rvalue)) {
+ sr_iov->link_state = _SR_IOV_LINK_STATE_INVALID;
+ TAKE_PTR(sr_iov);
+ return 0;
+ }
+
+ if (streq(rvalue, "auto")) {
+ sr_iov->link_state = SR_IOV_LINK_STATE_AUTO;
+ TAKE_PTR(sr_iov);
+ return 0;
+ }
+
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r,
+ "Failed to parse SR-IOV '%s=', ignoring assignment: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ sr_iov->link_state = r ? SR_IOV_LINK_STATE_ENABLE : SR_IOV_LINK_STATE_DISABLE;
+ TAKE_PTR(sr_iov);
+ return 0;
+}
+
+int config_parse_sr_iov_boolean(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(sr_iov_free_or_set_invalidp) SRIOV *sr_iov = NULL;
+ Network *network = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = sr_iov_new_static(network, filename, section_line, &sr_iov);
+ if (r < 0)
+ return r;
+
+ if (isempty(rvalue)) {
+ if (streq(lvalue, "MACSpoofCheck"))
+ sr_iov->vf_spoof_check_setting = -1;
+ else if (streq(lvalue, "QueryReceiveSideScaling"))
+ sr_iov->query_rss = -1;
+ else if (streq(lvalue, "Trust"))
+ sr_iov->trust = -1;
+ else
+ assert_not_reached("Invalid lvalue");
+
+ TAKE_PTR(sr_iov);
+ return 0;
+ }
+
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse '%s=', ignoring: %s", lvalue, rvalue);
+ return 0;
+ }
+
+ if (streq(lvalue, "MACSpoofCheck"))
+ sr_iov->vf_spoof_check_setting = r;
+ else if (streq(lvalue, "QueryReceiveSideScaling"))
+ sr_iov->query_rss = r;
+ else if (streq(lvalue, "Trust"))
+ sr_iov->trust = r;
+ else
+ assert_not_reached("Invalid lvalue");
+
+ TAKE_PTR(sr_iov);
+ return 0;
+}
projects / thirdparty / systemd.git / commitdiff
