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| author |   Jakub Kicinski <kuba@kernel.org> | 2024-01-02 16:00:08 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-01-02 16:00:08 -0800 |
| commit | 88b8fd9770896231791ad0026d8dddde537d3c82 (patch) | |
| tree | 072e3a8ebcc9d8297531f4b75d509a8d6323926c | |
| parent | xsk: make struct xsk_cb_desc available outside CONFIG_XDP_SOCKETS (diff) | |
| parent | net: ethtool: add a NO_CHANGE uAPI for new RXFH's input_xfrm (diff) | |
| download | wireguard-linux-88b8fd9770896231791ad0026d8dddde537d3c82.tar.xz wireguard-linux-88b8fd9770896231791ad0026d8dddde537d3c82.zip | |
Merge branch 'bug-fixes-for-rss-symmetric-xor'
Ahmed Zaki says:
====================
Bug fixes for RSS symmetric-xor
A couple of fixes for the symmetric-xor recently merged in net-next [1].
The first patch copies the xfrm value back to user-space when ethtool is
built with --disable-netlink. The second allows ethtool to change other
RSS attributes while not changing the xfrm values.
Link: https://lore.kernel.org/netdev/20231213003321.605376-1-ahmed.zaki@intel.com/ [1]
====================
Link: https://lore.kernel.org/r/20231221184235.9192-1-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/uapi/linux/ethtool.h | 1 | ||||
| -rw-r--r-- | net/ethtool/ioctl.c | 11 |
2 files changed, 10 insertions, 2 deletions
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h index 60801df9d8c0..01ba529dbb6d 100644 --- a/include/uapi/linux/ethtool.h +++ b/include/uapi/linux/ethtool.h @@ -2002,6 +2002,7 @@ static inline int ethtool_validate_duplex(__u8 duplex) * be exploited to reduce the RSS queue spread. */ #define RXH_XFRM_SYM_XOR (1 << 0) +#define RXH_XFRM_NO_CHANGE 0xff /* L2-L4 network traffic flow types */ #define TCP_V4_FLOW 0x01 /* hash or spec (tcp_ip4_spec) */ diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c index 86d47425038b..4c4f46dfc251 100644 --- a/net/ethtool/ioctl.c +++ b/net/ethtool/ioctl.c @@ -1252,6 +1252,11 @@ static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { ret = -EFAULT; } else if (copy_to_user(useraddr + + offsetof(struct ethtool_rxfh, input_xfrm), + &rxfh_dev.input_xfrm, + sizeof(rxfh.input_xfrm))) { + ret = -EFAULT; + } else if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_config[0]), rss_config, total_size)) { ret = -EFAULT; @@ -1299,14 +1304,16 @@ static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, return -EOPNOTSUPP; /* If either indir, hash key or function is valid, proceed further. - * Must request at least one change: indir size, hash key or function. + * Must request at least one change: indir size, hash key, function + * or input transformation. */ if ((rxfh.indir_size && rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && rxfh.indir_size != dev_indir_size) || (rxfh.key_size && (rxfh.key_size != dev_key_size)) || (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && - rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) + rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && + rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) return -EINVAL; if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |