diff options
| author | Edward Cree <ecree.xilinx@gmail.com> | 2024-06-27 16:33:47 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-06-28 18:53:21 -0700 |
| commit | 6ad2962f8adfd53fca52dce7f830783e95d99ce7 (patch) | |
| tree | 06fe12e7dbe2012d63e10666c9abd3445fb4f8de /net/core | |
| parent | 3ebbd9f6de7ec6d538639ebb657246f629ace81e (diff) | |
net: ethtool: attach an XArray of custom RSS contexts to a netdevice
Each context stores the RXFH settings (indir, key, and hfunc) as well
as optionally some driver private data.
Delete any still-existing contexts at netdev unregister time.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/cbd1c402cec38f2e03124f2ab65b4ae4e08bd90d.1719502240.git.ecree.xilinx@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/dev.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index c0c6e200e17f..bce810f8ae53 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -10336,6 +10336,9 @@ int register_netdevice(struct net_device *dev) if (ret) return ret; + /* rss ctx ID 0 is reserved for the default context, start from 1 */ + xa_init_flags(&dev->ethtool->rss_ctx, XA_FLAGS_ALLOC1); + spin_lock_init(&dev->addr_list_lock); netdev_set_addr_lockdep_class(dev); @@ -11235,6 +11238,28 @@ void synchronize_net(void) } EXPORT_SYMBOL(synchronize_net); +static void netdev_rss_contexts_free(struct net_device *dev) +{ + struct ethtool_rxfh_context *ctx; + unsigned long context; + + xa_for_each(&dev->ethtool->rss_ctx, context, ctx) { + struct ethtool_rxfh_param rxfh; + + rxfh.indir = ethtool_rxfh_context_indir(ctx); + rxfh.key = ethtool_rxfh_context_key(ctx); + rxfh.hfunc = ctx->hfunc; + rxfh.input_xfrm = ctx->input_xfrm; + rxfh.rss_context = context; + rxfh.rss_delete = true; + + xa_erase(&dev->ethtool->rss_ctx, context); + dev->ethtool_ops->set_rxfh(dev, &rxfh, NULL); + kfree(ctx); + } + xa_destroy(&dev->ethtool->rss_ctx); +} + /** * unregister_netdevice_queue - remove device from the kernel * @dev: device @@ -11338,6 +11363,8 @@ void unregister_netdevice_many_notify(struct list_head *head, netdev_name_node_alt_flush(dev); netdev_name_node_free(dev->name_node); + netdev_rss_contexts_free(dev); + call_netdevice_notifiers(NETDEV_PRE_UNINIT, dev); if (dev->netdev_ops->ndo_uninit) |