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| author | Ahmed Zaki <ahmed.zaki@intel.com> | 2023-12-12 17:33:14 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-12-13 22:07:16 -0800 |
| commit | fb6e30a72539ce28c1323aef4190d35aac106f6f (patch) | |
| tree | 5fe3886113c8ddb0b4db61c4bb274234058e02c9 /drivers/net/ethernet/intel/igb/igb_ethtool.c | |
| parent | c3f687d8dfeb33cffbb8f47c30002babfc4895d2 (diff) | |
| download | lwn-fb6e30a72539ce28c1323aef4190d35aac106f6f.tar.gz lwn-fb6e30a72539ce28c1323aef4190d35aac106f6f.zip | |
net: ethtool: pass a pointer to parameters to get/set_rxfh ethtool ops
The get/set_rxfh ethtool ops currently takes the rxfh (RSS) parameters
as direct function arguments. This will force us to change the API (and
all drivers' functions) every time some new parameters are added.
This is part 1/2 of the fix, as suggested in [1]:
- First simplify the code by always providing a pointer to all params
(indir, key and func); the fact that some of them may be NULL seems
like a weird historic thing or a premature optimization.
It will simplify the drivers if all pointers are always present.
- Then make the functions take a dev pointer, and a pointer to a
single struct wrapping all arguments. The set_* should also take
an extack.
Link: https://lore.kernel.org/netdev/20231121152906.2dd5f487@kernel.org/ [1]
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Suggested-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Link: https://lore.kernel.org/r/20231213003321.605376-2-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_ethtool.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c index 89dac7b215e5..d868a70732f4 100644 --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c @@ -3280,18 +3280,17 @@ static u32 igb_get_rxfh_indir_size(struct net_device *netdev) return IGB_RETA_SIZE; } -static int igb_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, - u8 *hfunc) +static int igb_get_rxfh(struct net_device *netdev, + struct ethtool_rxfh_param *rxfh) { struct igb_adapter *adapter = netdev_priv(netdev); int i; - if (hfunc) - *hfunc = ETH_RSS_HASH_TOP; - if (!indir) + rxfh->hfunc = ETH_RSS_HASH_TOP; + if (!rxfh->indir) return 0; for (i = 0; i < IGB_RETA_SIZE; i++) - indir[i] = adapter->rss_indir_tbl[i]; + rxfh->indir[i] = adapter->rss_indir_tbl[i]; return 0; } @@ -3331,8 +3330,9 @@ void igb_write_rss_indir_tbl(struct igb_adapter *adapter) } } -static int igb_set_rxfh(struct net_device *netdev, const u32 *indir, - const u8 *key, const u8 hfunc) +static int igb_set_rxfh(struct net_device *netdev, + struct ethtool_rxfh_param *rxfh, + struct netlink_ext_ack *extack) { struct igb_adapter *adapter = netdev_priv(netdev); struct e1000_hw *hw = &adapter->hw; @@ -3340,10 +3340,11 @@ static int igb_set_rxfh(struct net_device *netdev, const u32 *indir, u32 num_queues; /* We do not allow change in unsupported parameters */ - if (key || - (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)) + if (rxfh->key || + (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE && + rxfh->hfunc != ETH_RSS_HASH_TOP)) return -EOPNOTSUPP; - if (!indir) + if (!rxfh->indir) return 0; num_queues = adapter->rss_queues; @@ -3360,12 +3361,12 @@ static int igb_set_rxfh(struct net_device *netdev, const u32 *indir, /* Verify user input. */ for (i = 0; i < IGB_RETA_SIZE; i++) - if (indir[i] >= num_queues) + if (rxfh->indir[i] >= num_queues) return -EINVAL; for (i = 0; i < IGB_RETA_SIZE; i++) - adapter->rss_indir_tbl[i] = indir[i]; + adapter->rss_indir_tbl[i] = rxfh->indir[i]; igb_write_rss_indir_tbl(adapter); |