Commit 4d8b9319 authored by Matt Johnston's avatar Matt Johnston Committed by David S. Miller
Browse files

mctp: Add neighbour implementation 



Add an initial neighbour table implementation, to be used in the route
output path.

Signed-off-by: default avatarMatt Johnston <matt@codeconstruct.com.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 06d2f4c5

include/net/mctp.h

+25 −0
Original line number Diff line number Diff line
@@ -117,6 +117,31 @@ int mctp_route_add_local(struct mctp_dev *mdev, mctp_eid_t addr); 
int mctp_route_remove_local(struct mctp_dev *mdev, mctp_eid_t addr);

void mctp_route_remove_dev(struct mctp_dev *mdev);



/* neighbour definitions */

enum mctp_neigh_source {

	MCTP_NEIGH_STATIC,

	MCTP_NEIGH_DISCOVER,

};



struct mctp_neigh {

	struct mctp_dev		*dev;

	mctp_eid_t		eid;

	enum mctp_neigh_source	source;



	unsigned char		ha[MAX_ADDR_LEN];



	struct list_head	list;

	struct rcu_head		rcu;

};



int mctp_neigh_init(void);

void mctp_neigh_exit(void);



// ret_hwaddr may be NULL, otherwise must have space for MAX_ADDR_LEN

int mctp_neigh_lookup(struct mctp_dev *dev, mctp_eid_t eid,

		      void *ret_hwaddr);

void mctp_neigh_remove_dev(struct mctp_dev *mdev);



int mctp_routes_init(void);

void mctp_routes_exit(void);

include/net/mctpdevice.h

+1 −0
Original line number Diff line number Diff line
@@ -31,5 +31,6 @@ struct mctp_dev { 


struct mctp_dev *mctp_dev_get_rtnl(const struct net_device *dev);

struct mctp_dev *__mctp_dev_get(const struct net_device *dev);

struct mctp_dev *mctp_dev_get_rtnl(const struct net_device *dev);



#endif /* __NET_MCTPDEVICE_H */

include/net/netns/mctp.h

+4 −0
Original line number Diff line number Diff line
@@ -11,6 +11,10 @@ 
struct netns_mctp {

	/* Only updated under RTNL, entries freed via RCU */

	struct list_head routes;



	/* neighbour table */

	struct mutex neigh_lock;

	struct list_head neighbours;

};



#endif /* __NETNS_MCTP_H__ */

net/mctp/Makefile

+1 −1
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0

obj-$(CONFIG_MCTP) += mctp.o

mctp-objs := af_mctp.o device.o route.o
 
mctp-objs := af_mctp.o device.o route.o neigh.o

net/mctp/af_mctp.c

+5 −0
Original line number Diff line number Diff line
@@ -161,6 +161,10 @@ static __init int mctp_init(void) 
	if (rc)

		goto err_unreg_proto;



	rc = mctp_neigh_init();

	if (rc)

		goto err_unreg_proto;



	mctp_device_init();



	return 0;
@@ -176,6 +180,7 @@ static __init int mctp_init(void) 
static __exit void mctp_exit(void)

{

	mctp_device_exit();

	mctp_neigh_exit();

	mctp_routes_exit();

	proto_unregister(&mctp_proto);

	sock_unregister(PF_MCTP);