security/selinux/ibpkey.c

47  * sel_ib_pkey_hashfn - Hashing function for the pkey table
48  * @pkey: pkey number
51  * This is the hashing function for the pkey table, it returns the bucket
52  * number for the given pkey.
55 static unsigned int sel_ib_pkey_hashfn(u16 pkey)
57 	return (pkey & (SEL_PKEY_HASH_SIZE - 1));
61  * sel_ib_pkey_find - Search for a pkey record
66  * Search the pkey table and return the matching record.  If an entry
73 	struct sel_ib_pkey *pkey;
76 	list_for_each_entry_rcu(pkey, &sel_ib_pkey_hash[idx].list, list) {
77 		if (pkey->psec.pkey == pkey_num &&
78 		    pkey->psec.subnet_prefix == subnet_prefix)
79 			return pkey;
86  * sel_ib_pkey_insert - Insert a new pkey into the table
87  * @pkey: the new pkey record
90  * Add a new pkey record to the hash table.
93 static void sel_ib_pkey_insert(struct sel_ib_pkey *pkey)
100 	idx = sel_ib_pkey_hashfn(pkey->psec.pkey);
101 	list_add_rcu(&pkey->list, &sel_ib_pkey_hash[idx].list);
118  * sel_ib_pkey_sid_slow - Lookup the SID of a pkey using the policy
120  * @pkey_num: pkey number
121  * @sid: pkey SID
124  * This function determines the SID of a pkey by querying the security
125  * policy.  The result is added to the pkey table to speedup future
132 	struct sel_ib_pkey *pkey;
137 	pkey = sel_ib_pkey_find(subnet_prefix, pkey_num);
138 	if (pkey) {
139 		*sid = pkey->psec.sid;
159 	new->psec.pkey = pkey_num;
171  * @pkey_num: pkey number
172  * @sid: pkey SID
176  * possible.  First the pkey table is queried, but if an entry can't be found
183 	struct sel_ib_pkey *pkey;
186 	pkey = sel_ib_pkey_find(subnet_prefix, pkey_num);
187 	if (pkey) {
188 		*sid = pkey->psec.sid;
198  * sel_ib_pkey_flush - Flush the entire pkey table
201  * Remove all entries from the pkey table
207 	struct sel_ib_pkey *pkey, *pkey_tmp;
212 		list_for_each_entry_safe(pkey, pkey_tmp,
214 			list_del_rcu(&pkey->list);
215 			kfree_rcu(pkey, rcu);