Link: port to new ethtool ETHTOOL_xLINKSETTINGS

Link: port to new ethtool ETHTOOL_xLINKSETTINGS
This patch defines a new ETHTOOL_GLINKSETTINGS/SLINKSETTINGS API,
handled by the new get_link_ksettings/set_link_ksettings .

This is a WIP version based on this [kernel
patch](https://patchwork.kernel.org/patch/8411401/).

commit 0527f1c

http://github.com/torvalds/linux/commit/3f1ac7a700d039c61d8d8b99f28d605d489a60cfommit
35afb33

1 files changed, 19 insertions, 9 deletions

diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index ece9248c2a..4578d0d9b2 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -167,6 +167,7 @@ static int load_link(link_config_ctx *ctx, const char *filename) {
         link->mac_policy = _MACPOLICY_INVALID;
         link->wol = _WOL_INVALID;
         link->duplex = _DUP_INVALID;
+        link->autonegotiation = -1;
 
         memset(&link->features, -1, _NET_DEV_FEAT_MAX);
 
@@ -202,9 +203,9 @@ static bool enable_name_policy(void) {
 }
 
 int link_config_load(link_config_ctx *ctx) {
-        int r;
         _cleanup_strv_free_ char **files;
         char **f;
+        int r;
 
         link_configs_free(ctx);
 
@@ -364,11 +365,12 @@ static int get_mac(struct udev_device *device, bool want_random,
 
 int link_config_apply(link_config_ctx *ctx, link_config *config,
                       struct udev_device *device, const char **name) {
-        const char *old_name;
-        const char *new_name = NULL;
+        bool respect_predictable = false;
         struct ether_addr generated_mac;
         struct ether_addr *mac = NULL;
-        bool respect_predictable = false;
+        const char *new_name = NULL;
+        const char *old_name;
+        unsigned speed;
         int r, ifindex;
 
         assert(ctx);
@@ -380,11 +382,19 @@ int link_config_apply(link_config_ctx *ctx, link_config *config,
         if (!old_name)
                 return -EINVAL;
 
-        r = ethtool_set_speed(&ctx->ethtool_fd, old_name, config->speed / 1024, config->duplex);
-        if (r < 0)
-                log_warning_errno(r, "Could not set speed or duplex of %s to %zu Mbps (%s): %m",
-                                  old_name, config->speed / 1024,
-                                  duplex_to_string(config->duplex));
+
+        speed = DIV_ROUND_UP(config->speed, 1000000);
+
+        r = ethtool_set_glinksettings(&ctx->ethtool_fd, old_name, speed, config->duplex, config->autonegotiation);
+        if (r < 0) {
+
+                if (r == -EOPNOTSUPP)
+                        r = ethtool_set_speed(&ctx->ethtool_fd, old_name, speed, config->duplex);
+
+                if (r < 0)
+                        log_warning_errno(r, "Could not set speed or duplex of %s to %u Mbps (%s): %m",
+                                          old_name, speed, duplex_to_string(config->duplex));
+        }
 
         r = ethtool_set_wol(&ctx->ethtool_fd, old_name, config->wol);
         if (r < 0)