JFIF$        dd7 

Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/rdma/rdma_netlink.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _RDMA_NETLINK_H
#define _RDMA_NETLINK_H

#include <linux/netlink.h>
#include <uapi/rdma/rdma_netlink.h>

struct ib_device;

enum {
	RDMA_NLDEV_ATTR_EMPTY_STRING = 1,
	RDMA_NLDEV_ATTR_ENTRY_STRLEN = 16,
	RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE = 32,
};

struct rdma_nl_cbs {
	int (*doit)(struct sk_buff *skb, struct nlmsghdr *nlh,
		    struct netlink_ext_ack *extack);
	int (*dump)(struct sk_buff *skb, struct netlink_callback *nlcb);
	u8 flags;
};

enum rdma_nl_flags {
	/* Require CAP_NET_ADMIN */
	RDMA_NL_ADMIN_PERM	= 1 << 0,
};

/* Define this module as providing netlink services for NETLINK_RDMA, with
 * index _index.  Since the client indexes were setup in a uapi header as an
 * enum and we do no want to change that, the user must supply the expanded
 * constant as well and the compiler checks they are the same.
 */
#define MODULE_ALIAS_RDMA_NETLINK(_index, _val)                                \
	static inline void __maybe_unused __chk_##_index(void)                 \
	{                                                                      \
		BUILD_BUG_ON(_index != _val);                                  \
	}                                                                      \
	MODULE_ALIAS("rdma-netlink-subsys-" __stringify(_val))

/**
 * Register client in RDMA netlink.
 * @index: Index of the added client
 * @cb_table: A table for op->callback
 */
void rdma_nl_register(unsigned int index,
		      const struct rdma_nl_cbs cb_table[]);

/**
 * Remove a client from IB netlink.
 * @index: Index of the removed IB client.
 */
void rdma_nl_unregister(unsigned int index);

/**
 * Put a new message in a supplied skb.
 * @skb: The netlink skb.
 * @nlh: Pointer to put the header of the new netlink message.
 * @seq: The message sequence number.
 * @len: The requested message length to allocate.
 * @client: Calling IB netlink client.
 * @op: message content op.
 * Returns the allocated buffer on success and NULL on failure.
 */
void *ibnl_put_msg(struct sk_buff *skb, struct nlmsghdr **nlh, int seq,
		   int len, int client, int op, int flags);
/**
 * Put a new attribute in a supplied skb.
 * @skb: The netlink skb.
 * @nlh: Header of the netlink message to append the attribute to.
 * @len: The length of the attribute data.
 * @data: The attribute data to put.
 * @type: The attribute type.
 * Returns the 0 and a negative error code on failure.
 */
int ibnl_put_attr(struct sk_buff *skb, struct nlmsghdr *nlh,
		  int len, void *data, int type);

/**
 * Send the supplied skb to a specific userspace PID.
 * @net: Net namespace in which to send the skb
 * @skb: The netlink skb
 * @pid: Userspace netlink process ID
 * Returns 0 on success or a negative error code.
 */
int rdma_nl_unicast(struct net *net, struct sk_buff *skb, u32 pid);

/**
 * Send, with wait/1 retry, the supplied skb to a specific userspace PID.
 * @net: Net namespace in which to send the skb
 * @skb: The netlink skb
 * @pid: Userspace netlink process ID
 * Returns 0 on success or a negative error code.
 */
int rdma_nl_unicast_wait(struct net *net, struct sk_buff *skb, __u32 pid);

/**
 * Send the supplied skb to a netlink group.
 * @net: Net namespace in which to send the skb
 * @skb: The netlink skb
 * @group: Netlink group ID
 * @flags: allocation flags
 * Returns 0 on success or a negative error code.
 */
int rdma_nl_multicast(struct net *net, struct sk_buff *skb,
		      unsigned int group, gfp_t flags);

/**
 * Check if there are any listeners to the netlink group
 * @group: the netlink group ID
 * Returns true on success or false if no listeners.
 */
bool rdma_nl_chk_listeners(unsigned int group);

/**
 * Prepare and send an event message
 * @ib: the IB device which triggered the event
 * @port_num: the port number which triggered the event - 0 if unused
 * @type: the event type
 * Returns 0 on success or a negative error code
 */
int rdma_nl_notify_event(struct ib_device *ib, u32 port_num,
			 enum rdma_nl_notify_event_type type);

struct rdma_link_ops {
	struct list_head list;
	const char *type;
	int (*newlink)(const char *ibdev_name, struct net_device *ndev);
};

void rdma_link_register(struct rdma_link_ops *ops);
void rdma_link_unregister(struct rdma_link_ops *ops);

#define MODULE_ALIAS_RDMA_LINK(type) MODULE_ALIAS("rdma-link-" type)
#define MODULE_ALIAS_RDMA_CLIENT(type) MODULE_ALIAS("rdma-client-" type)

#endif /* _RDMA_NETLINK_H */
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg