net: ethtool: get rid of get/set_rxfh_context functions
Add the RSS context parameters to struct ethtool_rxfh_param and use the
get/set_rxfh to handle the RSS contexts as well.
This is part 2/2 of the fix suggested in [1]:
- Add a rss_context member to the argument struct and a capability
like cap_link_lanes_supported to indicate whether driver supports
rss contexts, then you can remove *et_rxfh_context functions,
and instead call *et_rxfh() with a non-zero rss_context.
Link: https://lore.kernel.org/netdev/20231121152906.2dd5f487@kernel.org/ [1]
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: Tony Nguyen <anthony.l.nguyen@intel.com>
CC: Marcin Wojtas <mw@semihalf.com>
CC: Russell King <linux@armlinux.org.uk>
CC: Sunil Goutham <sgoutham@marvell.com>
CC: Geetha sowjanya <gakula@marvell.com>
CC: Subbaraya Sundeep <sbhatta@marvell.com>
CC: hariprasad <hkelam@marvell.com>
CC: Saeed Mahameed <saeedm@nvidia.com>
CC: Leon Romanovsky <leon@kernel.org>
CC: Edward Cree <ecree.xilinx@gmail.com>
CC: Martin Habets <habetsm.xilinx@gmail.com>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Link: https://lore.kernel.org/r/20231213003321.605376-3-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 5f49a10..86e5fc6 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -1201,7 +1201,7 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
return -EINVAL;
/* Most drivers don't handle rss_context, check it's 0 as well */
- if (rxfh.rss_context && !ops->get_rxfh_context)
+ if (rxfh.rss_context && !ops->cap_rss_ctx_supported)
return -EOPNOTSUPP;
rxfh.indir_size = rxfh_dev.indir_size;
@@ -1225,11 +1225,9 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
if (user_key_size)
rxfh_dev.key = rss_config + indir_bytes;
- if (rxfh.rss_context)
- ret = dev->ethtool_ops->get_rxfh_context(dev, &rxfh_dev,
- rxfh.rss_context);
- else
- ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev);
+ rxfh_dev.rss_context = rxfh.rss_context;
+
+ ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev);
if (ret)
goto out;
@@ -1257,7 +1255,6 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
struct netlink_ext_ack *extack = NULL;
struct ethtool_rxnfc rx_rings;
struct ethtool_rxfh rxfh;
- bool delete = false;
u32 indir_bytes = 0;
u8 *rss_config;
int ret;
@@ -1277,7 +1274,7 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
return -EINVAL;
/* Most drivers don't handle rss_context, check it's 0 as well */
- if (rxfh.rss_context && !ops->set_rxfh_context)
+ if (rxfh.rss_context && !ops->cap_rss_ctx_supported)
return -EOPNOTSUPP;
/* If either indir, hash key or function is valid, proceed further.
@@ -1327,7 +1324,7 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
for (i = 0; i < dev_indir_size; i++)
indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
} else {
- delete = true;
+ rxfh_dev.rss_delete = true;
}
}
@@ -1343,21 +1340,17 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
}
rxfh_dev.hfunc = rxfh.hfunc;
+ rxfh_dev.rss_context = rxfh.rss_context;
- if (rxfh.rss_context)
- ret = ops->set_rxfh_context(dev, &rxfh_dev,
- &rxfh.rss_context, delete);
- else
- ret = ops->set_rxfh(dev, &rxfh_dev, extack);
-
+ ret = ops->set_rxfh(dev, &rxfh_dev, extack);
if (ret)
goto out;
if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
- &rxfh.rss_context, sizeof(rxfh.rss_context)))
+ &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context)))
ret = -EFAULT;
- if (!rxfh.rss_context) {
+ if (!rxfh_dev.rss_context) {
/* indicate whether rxfh was set to default */
if (rxfh.indir_size == 0)
dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
