diff options
author | Vishal Kulkarni <vishal@chelsio.com> | 2020-06-19 17:21:37 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2020-06-19 23:17:31 +0300 |
commit | db43b30cd89c2549216b9e4ef27c5d2f9dcb964d (patch) | |
tree | d14441bfd97ff0c1f9049dd0a7fe524524e9347f /drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | |
parent | c8729cac2a11e4bc170f5d0041d5561bb7fe82a0 (diff) | |
download | linux-db43b30cd89c2549216b9e4ef27c5d2f9dcb964d.tar.xz |
cxgb4: add ethtool n-tuple filter deletion
Add support to delete ethtool n-tuple filter. Fetch the appropriate
filter region (HPFILTER, HASH, NORMAL) in which the filter exists,
and delete it from the respective region, accordingly.
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c index 82fc09b6dc8e..5c588677877d 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c @@ -1573,6 +1573,22 @@ static int set_rss_table(struct net_device *dev, const u32 *p, const u8 *key, return -EPERM; } +static struct filter_entry *cxgb4_get_filter_entry(struct adapter *adap, + u32 ftid) +{ + struct tid_info *t = &adap->tids; + struct filter_entry *f; + + if (ftid < t->nhpftids) + f = &adap->tids.hpftid_tab[ftid]; + else if (ftid < t->nftids) + f = &adap->tids.ftid_tab[ftid - t->nhpftids]; + else + f = lookup_tid(&adap->tids, ftid); + + return f; +} + static int get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info, u32 *rules) { @@ -1636,6 +1652,48 @@ static int get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info, return -EOPNOTSUPP; } +static int cxgb4_ntuple_del_filter(struct net_device *dev, + struct ethtool_rxnfc *cmd) +{ + struct cxgb4_ethtool_filter_info *filter_info; + struct adapter *adapter = netdev2adap(dev); + struct port_info *pi = netdev_priv(dev); + struct filter_entry *f; + u32 filter_id; + int ret; + + if (!(adapter->flags & CXGB4_FULL_INIT_DONE)) + return -EAGAIN; /* can still change nfilters */ + + if (!adapter->ethtool_filters) + return -EOPNOTSUPP; + + if (cmd->fs.location >= adapter->ethtool_filters->nentries) { + dev_err(adapter->pdev_dev, + "Location must be < %u", + adapter->ethtool_filters->nentries); + return -ERANGE; + } + + filter_info = &adapter->ethtool_filters->port[pi->port_id]; + + if (!test_bit(cmd->fs.location, filter_info->bmap)) + return -ENOENT; + + filter_id = filter_info->loc_array[cmd->fs.location]; + f = cxgb4_get_filter_entry(adapter, filter_id); + + ret = cxgb4_flow_rule_destroy(dev, f->fs.tc_prio, &f->fs, filter_id); + if (ret) + goto err; + + clear_bit(cmd->fs.location, filter_info->bmap); + filter_info->in_use--; + +err: + return ret; +} + /* Add Ethtool n-tuple filters. */ static int cxgb4_ntuple_set_filter(struct net_device *netdev, struct ethtool_rxnfc *cmd) @@ -1702,6 +1760,9 @@ static int set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) case ETHTOOL_SRXCLSRLINS: ret = cxgb4_ntuple_set_filter(dev, cmd); break; + case ETHTOOL_SRXCLSRLDEL: + ret = cxgb4_ntuple_del_filter(dev, cmd); + break; default: break; } |