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path: root/net/ethtool/rings.c
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2020-10-06ethtool: link up ethnl_header_policy as a nested policyJakub Kicinski1-2/+4
To get the most out of parsing by the core, and to allow dumping full policies we need to specify which policy applies to nested attrs. For headers it's ethnl_header_policy. $ sed -i 's@\(ETHTOOL_A_.*HEADER\].*=\) { .type = NLA_NESTED },@\1\n\t\tNLA_POLICY_NESTED(ethnl_header_policy),@' net/ethtool/* Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-10-06ethtool: trim policy tablesJakub Kicinski1-16/+2
Since ethtool uses strict attribute validation there's no need to initialize all attributes in policy tables. 0 is NLA_UNSPEC which is going to be rejected. Remove the NLA_REJECTs. Similarly attributes above maxattrs are rejected, so there's no need to always size the policy tables to ETHTOOL_A_..._MAX. v2: - new patch Suggested-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-10-06ethtool: wire up set policies to opsJakub Kicinski1-8/+2
Similarly to get commands wire up the policies of set commands to get parsing by the core and policy dumps. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-10-06ethtool: wire up get policies to opsJakub Kicinski1-4/+1
Wire up policies for get commands in struct nla_policy of the ethtool family. Make use of genetlink code attr validation and parsing, as well as allow dumping policies to user space. For every ETHTOOL_MSG_*_GET: - add 'ethnl_' prefix to policy name - add extern declaration in net/ethtool/netlink.h - wire up the policy & attr in ethtool_genl_ops[]. - remove .request_policy and .max_attr from ethnl_request_ops. Obviously core only records the first "layer" of parsed attrs so we still need to parse the sub-attrs of the nested header attribute. v2: - merge of patches 1 and 2 from v1 - remove stray empty lines in ops - also remove .max_attr Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-13ethtool: fix spelling mistake "exceeeds" -> "exceeds"Colin Ian King1-1/+1
There are a couple of spelling mistakes in NL_SET_ERR_MSG_ATTR messages. Fix these. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12ethtool: add RINGS_NTF notificationMichal Kubecek1-0/+3
Send ETHTOOL_MSG_RINGS_NTF notification whenever ring sizes of a network device are modified using ETHTOOL_MSG_RINGS_SET netlink message or ETHTOOL_SRINGPARAM ioctl request. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12ethtool: set device ring sizes with RINGS_SET requestMichal Kubecek1-0/+89
Implement RINGS_SET netlink request to set ring sizes of a network device. These are traditionally set with ETHTOOL_SRINGPARAM ioctl request. Like the ioctl implementation, the generic ethtool code checks if supplied values do not exceed driver defined limits; if they do, first offending attribute is reported using extack. v2: - fix netdev reference leak in error path (found by Jakub Kicinsky) Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12ethtool: provide ring sizes with RINGS_GET requestMichal Kubecek1-0/+108
Implement RINGS_GET request to get ring sizes of a network device. These are traditionally available via ETHTOOL_GRINGPARAM ioctl request. Omit attributes for ring types which are not supported by driver or device (zero reported for maximum). v2: (all suggested by Jakub Kicinski) - minor cleanup in rings_prepare_data() - more descriptive rings_reply_size() - omit attributes with zero max size Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>