system-linux: add support for configurable GRO option

[project/netifd.git] / system-linux.c

diff --git a/system-linux.c b/system-linux.c
index 9097f6a56a1f2cb233de1ab74950d1653db01a0b..94f262c1ea91069593954a9de4dced88e16a2fcd 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -1736,6 +1736,40 @@ static bool ethtool_link_mode_test_bit(__s8 nwords, int nr, const __u32 *mask)
        return !!(mask[nr / 32] & (1U << (nr % 32)));
 }
 
+static int
+system_get_ethtool_gro(struct device *dev)
+{
+       struct ethtool_value ecmd;
+       struct ifreq ifr = {
+               .ifr_data = (caddr_t)&ecmd,
+       };
+
+       memset(&ecmd, 0, sizeof(ecmd));
+       ecmd.cmd = ETHTOOL_GGRO;
+       strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
+
+       if (ioctl(sock_ioctl, SIOCETHTOOL, &ifr))
+               return -1;
+
+       return ecmd.data;
+}
+
+static void
+system_set_ethtool_gro(struct device *dev, struct device_settings *s)
+{
+       struct ethtool_value ecmd;
+       struct ifreq ifr = {
+               .ifr_data = (caddr_t)&ecmd,
+       };
+
+       memset(&ecmd, 0, sizeof(ecmd));
+       ecmd.cmd = ETHTOOL_SGRO;
+       ecmd.data = s->gro;
+       strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
+
+       ioctl(sock_ioctl, SIOCETHTOOL, &ifr);
+}
+
 static void
 system_set_ethtool_pause(struct device *dev, struct device_settings *s)
 {
@@ -1860,11 +1894,19 @@ system_set_ethtool_settings(struct device *dev, struct device_settings *s)
        ioctl(sock_ioctl, SIOCETHTOOL, &ifr);
 }
 
+static void
+system_set_ethtool_settings_after_up(struct device *dev, struct device_settings *s)
+{
+       if (s->flags & DEV_OPT_GRO)
+               system_set_ethtool_gro(dev, s);
+}
+
 void
 system_if_get_settings(struct device *dev, struct device_settings *s)
 {
        struct ifreq ifr;
        char buf[10];
+       int ret;
 
        memset(&ifr, 0, sizeof(ifr));
        strncpy(ifr.ifr_name, dev->ifname, sizeof(ifr.ifr_name) - 1);
@@ -1985,6 +2027,12 @@ system_if_get_settings(struct device *dev, struct device_settings *s)
                s->arp_accept = strtoul(buf, NULL, 0);
                s->flags |= DEV_OPT_ARP_ACCEPT;
        }
+
+       ret = system_get_ethtool_gro(dev);
+       if (ret >= 0) {
+               s->gro = ret;
+               s->flags |= DEV_OPT_GRO;
+       }
 }
 
 void
@@ -2086,6 +2134,11 @@ system_if_apply_settings(struct device *dev, struct device_settings *s, uint64_t
        system_set_ethtool_settings(dev, s);
 }
 
+void system_if_apply_settings_after_up(struct device *dev, struct device_settings *s)
+{
+       system_set_ethtool_settings_after_up(dev, s);
+}
+
 int system_if_up(struct device *dev)
 {
        return system_if_flags(dev->ifname, IFF_UP, 0);