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authorMichal Kubecek <mkubecek@suse.cz>2020-03-12 23:08:43 +0300
committerDavid S. Miller <davem@davemloft.net>2020-03-13 01:32:33 +0300
commite19c591eafad4d723a2eed385e253eca0506cc25 (patch)
tree1450733e460f65eb9eb6a0b88a1dd96bc061fcc2 /net/ethtool/common.h
parent0c84979c951a85fcb5c77ac2480fd476e283a07c (diff)
downloadlinux-e19c591eafad4d723a2eed385e253eca0506cc25.tar.xz
ethtool: set device channel counts with CHANNELS_SET request
Implement CHANNELS_SET netlink request to set channel counts of a network device. These are traditionally set with ETHTOOL_SCHANNELS ioctl request. Like the ioctl implementation, the generic ethtool code checks if supplied values do not exceed driver defined limits; if they do, first offending attribute is reported using extack. Checks preventing removing channels used for RX indirection table or zerocopy AF_XDP socket are also implemented. Move ethtool_get_max_rxfh_channel() helper into common.c so that it can be used by both ioctl and netlink code. v2: - fix netdev reference leak in error path (found by Jakub Kicinsky) Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool/common.h')
-rw-r--r--net/ethtool/common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ethtool/common.h b/net/ethtool/common.h
index 7dc1163800a7..03946e16e623 100644
--- a/net/ethtool/common.h
+++ b/net/ethtool/common.h
@@ -29,5 +29,6 @@ int __ethtool_get_link(struct net_device *dev);
bool convert_legacy_settings_to_link_ksettings(
struct ethtool_link_ksettings *link_ksettings,
const struct ethtool_cmd *legacy_settings);
+int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max);
#endif /* _ETHTOOL_COMMON_H */