| Message ID | 20230418111459.811553-6-vladimir.oltean@nxp.com |
|---|---|
| State | Accepted |
| Commit | 35b288d6e3d467f6f7bf466fee6184b275999f14 |
| Headers | show |
| Series | ethtool mm API consolidation | expand |
On Tue, Apr 18, 2023 at 02:14:55PM +0300, Vladimir Oltean wrote: > The verify-enabled boolean (ETHTOOL_A_MM_VERIFY_ENABLED) was intended to > be a sub-setting of tx-enabled (ETHTOOL_A_MM_TX_ENABLED). IOW, MAC Merge > TX can be enabled with or without verification, but verification with TX > disabled makes no sense. > > The pmac-enabled boolean (ETHTOOL_A_MM_PMAC_ENABLED) was intended to be > a global toggle from an API perspective, whereas tx-enabled just handles > the TX direction. IOW, the pMAC can be enabled with or without TX, but > it doesn't make sense to enable TX if the pMAC is not enabled. > > Add two checks which sanitize and reject these invalid cases. > > Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <simon.horman@corigine.com>
diff --git a/net/ethtool/mm.c b/net/ethtool/mm.c index e00d7d5cea7e..4058a557b5a4 100644 --- a/net/ethtool/mm.c +++ b/net/ethtool/mm.c @@ -214,6 +214,16 @@ static int ethnl_set_mm(struct ethnl_req_info *req_info, struct genl_info *info) return -ERANGE; } + if (cfg.verify_enabled && !cfg.tx_enabled) { + NL_SET_ERR_MSG(extack, "Verification requires TX enabled"); + return -EINVAL; + } + + if (cfg.tx_enabled && !cfg.pmac_enabled) { + NL_SET_ERR_MSG(extack, "TX enabled requires pMAC enabled"); + return -EINVAL; + } + ret = dev->ethtool_ops->set_mm(dev, &cfg, extack); return ret < 0 ? ret : 1; }
The verify-enabled boolean (ETHTOOL_A_MM_VERIFY_ENABLED) was intended to be a sub-setting of tx-enabled (ETHTOOL_A_MM_TX_ENABLED). IOW, MAC Merge TX can be enabled with or without verification, but verification with TX disabled makes no sense. The pmac-enabled boolean (ETHTOOL_A_MM_PMAC_ENABLED) was intended to be a global toggle from an API perspective, whereas tx-enabled just handles the TX direction. IOW, the pMAC can be enabled with or without TX, but it doesn't make sense to enable TX if the pMAC is not enabled. Add two checks which sanitize and reject these invalid cases. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- v1->v2: add missing "Verification requires TX enabled" check which was only mentioned in the commit message net/ethtool/mm.c | 10 ++++++++++ 1 file changed, 10 insertions(+)