diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/ethtool.c | 11 | ||||
| -rw-r--r-- | net/xdp/xdp_umem.c | 4 |
2 files changed, 13 insertions, 2 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 9a648fb09594..5a788adeba0b 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -27,6 +27,7 @@ #include <linux/rtnetlink.h> #include <linux/sched/signal.h> #include <linux/net.h> +#include <net/xdp_sock.h> /* * Some useful ethtool_ops methods that're device independent. @@ -1656,7 +1657,9 @@ static noinline_for_stack int ethtool_set_channels(struct net_device *dev, void __user *useraddr) { struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; + u16 from_channel, to_channel; u32 max_rx_in_use = 0; + unsigned int i; if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) return -EOPNOTSUPP; @@ -1680,6 +1683,14 @@ static noinline_for_stack int ethtool_set_channels(struct net_device *dev, (channels.combined_count + channels.rx_count) <= max_rx_in_use) return -EINVAL; + /* Disabling channels, query zero-copy AF_XDP sockets */ + from_channel = channels.combined_count + + min(channels.rx_count, channels.tx_count); + to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); + for (i = from_channel; i < to_channel; i++) + if (xdp_get_umem_from_qid(dev, i)) + return -EINVAL; + return dev->ethtool_ops->set_channels(dev, &channels); } diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 4d6c6652f5d1..773326f682b1 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -55,8 +55,8 @@ static void xdp_reg_umem_at_qid(struct net_device *dev, struct xdp_umem *umem, dev->_tx[queue_id].umem = umem; } -static struct xdp_umem *xdp_get_umem_from_qid(struct net_device *dev, - u16 queue_id) +struct xdp_umem *xdp_get_umem_from_qid(struct net_device *dev, + u16 queue_id) { if (queue_id < dev->real_num_rx_queues) return dev->_rx[queue_id].umem; |