udev/net: allow to set number of SR-IOV virtual functions

This adds SR-IOVVirtualFunctions= setting in [Link] section.

3 files changed, 9 insertions, 1 deletions

diff --git a/src/udev/net/link-config-gperf.gperf b/src/udev/net/link-config-gperf.gperf
index 3732fd53ef..7dde4ed59f 100644
--- a/src/udev/net/link-config-gperf.gperf
+++ b/src/udev/net/link-config-gperf.gperf
@@ -102,6 +102,7 @@ Link.RxMaxCoalescedHighFrames,             config_parse_coalesce_u32,
 Link.TxCoalesceHighSec,                    config_parse_coalesce_sec,             0,                             offsetof(LinkConfig, coalesce.tx_coalesce_usecs_high)
 Link.TxMaxCoalescedHighFrames,             config_parse_coalesce_u32,             0,                             offsetof(LinkConfig, coalesce.tx_max_coalesced_frames_high)
 Link.CoalescePacketRateSampleIntervalSec,  config_parse_coalesce_sec,             0,                             offsetof(LinkConfig, coalesce.rate_sample_interval)
+Link.SR-IOVVirtualFunctions,               config_parse_sr_iov_num_vfs,           0,                             offsetof(LinkConfig, sr_iov_num_vfs)
 SR-IOV.VirtualFunction,                    config_parse_sr_iov_uint32,            0,                             offsetof(LinkConfig, sr_iov_by_section)
 SR-IOV.VLANId,                             config_parse_sr_iov_uint32,            0,                             offsetof(LinkConfig, sr_iov_by_section)
 SR-IOV.QualityOfService,                   config_parse_sr_iov_uint32,            0,                             offsetof(LinkConfig, sr_iov_by_section)
diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index 3e8b6aaaf2..5bd029ecc5 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -250,6 +250,7 @@ int link_load_one(LinkConfigContext *ctx, const char *filename) {
                 .txqueuelen = UINT32_MAX,
                 .coalesce.use_adaptive_rx_coalesce = -1,
                 .coalesce.use_adaptive_tx_coalesce = -1,
+                .sr_iov_num_vfs = UINT32_MAX,
         };
 
         for (i = 0; i < ELEMENTSOF(config->features); i++)
@@ -290,7 +291,7 @@ int link_load_one(LinkConfigContext *ctx, const char *filename) {
         if (r < 0)
                 return r;
 
-        r = sr_iov_drop_invalid_sections(config->sr_iov_by_section);
+        r = sr_iov_drop_invalid_sections(config->sr_iov_num_vfs, config->sr_iov_by_section);
         if (r < 0)
                 return r;
 
@@ -874,6 +875,11 @@ static int link_apply_sr_iov_config(Link *link, sd_netlink **rtnl) {
 
         assert(link);
         assert(link->config);
+        assert(link->device);
+
+        r = sr_iov_set_num_vfs(link->device, link->config->sr_iov_num_vfs, link->config->sr_iov_by_section);
+        if (r < 0)
+                log_link_warning_errno(link, r, "Failed to set the number of SR-IOV virtual functions, ignoring: %m");
 
         ORDERED_HASHMAP_FOREACH(sr_iov, link->config->sr_iov_by_section) {
                 r = sr_iov_configure(link, rtnl, sr_iov);
diff --git a/src/udev/net/link-config.h b/src/udev/net/link-config.h
index e71738cfbf..0d1d117f2e 100644
--- a/src/udev/net/link-config.h
+++ b/src/udev/net/link-config.h
@@ -77,6 +77,7 @@ struct LinkConfig {
         int autoneg_flow_control;
         netdev_coalesce_param coalesce;
 
+        uint32_t sr_iov_num_vfs;
         OrderedHashmap *sr_iov_by_section;
 
         LIST_FIELDS(LinkConfig, configs);