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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5e53e689b7
The pmcraid driver is abusing the genetlink API and is using its family ID as the multicast group ID, which is invalid and may belong to somebody else (and likely will.) Make it use the correct API, but since this may already be used as-is by userspace, reserve a family ID for this code and also reserve that group ID to not break userspace assumptions. My previous patch broke event delivery in the driver as I missed that it wasn't using the right API and forgot to update it later in my series. While changing this, I noticed that the genetlink code could use the static group ID instead of a strcmp(), so also do that for the VFS_DQUOT family. Cc: Anil Ravindranath <anil_ravindranath@pmc-sierra.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
#ifndef _UAPI__LINUX_GENERIC_NETLINK_H
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#define _UAPI__LINUX_GENERIC_NETLINK_H
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#include <linux/types.h>
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#include <linux/netlink.h>
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#define GENL_NAMSIZ 16 /* length of family name */
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#define GENL_MIN_ID NLMSG_MIN_TYPE
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#define GENL_MAX_ID 1023
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struct genlmsghdr {
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__u8 cmd;
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__u8 version;
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__u16 reserved;
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};
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#define GENL_HDRLEN NLMSG_ALIGN(sizeof(struct genlmsghdr))
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#define GENL_ADMIN_PERM 0x01
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#define GENL_CMD_CAP_DO 0x02
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#define GENL_CMD_CAP_DUMP 0x04
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#define GENL_CMD_CAP_HASPOL 0x08
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/*
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* List of reserved static generic netlink identifiers:
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*/
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#define GENL_ID_GENERATE 0
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#define GENL_ID_CTRL NLMSG_MIN_TYPE
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#define GENL_ID_VFS_DQUOT (NLMSG_MIN_TYPE + 1)
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#define GENL_ID_PMCRAID (NLMSG_MIN_TYPE + 2)
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/**************************************************************************
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* Controller
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**************************************************************************/
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enum {
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CTRL_CMD_UNSPEC,
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CTRL_CMD_NEWFAMILY,
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CTRL_CMD_DELFAMILY,
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CTRL_CMD_GETFAMILY,
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CTRL_CMD_NEWOPS,
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CTRL_CMD_DELOPS,
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CTRL_CMD_GETOPS,
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CTRL_CMD_NEWMCAST_GRP,
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CTRL_CMD_DELMCAST_GRP,
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CTRL_CMD_GETMCAST_GRP, /* unused */
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__CTRL_CMD_MAX,
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};
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#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
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enum {
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CTRL_ATTR_UNSPEC,
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CTRL_ATTR_FAMILY_ID,
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CTRL_ATTR_FAMILY_NAME,
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CTRL_ATTR_VERSION,
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CTRL_ATTR_HDRSIZE,
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CTRL_ATTR_MAXATTR,
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CTRL_ATTR_OPS,
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CTRL_ATTR_MCAST_GROUPS,
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__CTRL_ATTR_MAX,
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};
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#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
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enum {
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CTRL_ATTR_OP_UNSPEC,
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CTRL_ATTR_OP_ID,
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CTRL_ATTR_OP_FLAGS,
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__CTRL_ATTR_OP_MAX,
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};
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#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
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enum {
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CTRL_ATTR_MCAST_GRP_UNSPEC,
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CTRL_ATTR_MCAST_GRP_NAME,
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CTRL_ATTR_MCAST_GRP_ID,
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__CTRL_ATTR_MCAST_GRP_MAX,
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};
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#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
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#endif /* _UAPI__LINUX_GENERIC_NETLINK_H */
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