Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * DECnet       An implementation of the DECnet protocol suite for the LINUX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *              operating system.  DECnet is implemented using the  BSD Socket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *              interface as the means of communication with the user level.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *              DECnet Routing Forwarding Information Base (Rules)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * Author:      Steve Whitehouse <SteveW@ACM.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *              Mostly copied from Alexey Kuznetsov's ipv4/fib_rules.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Changes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  *              Steve Whitehouse <steve@chygwyn.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  *              Updated for Thomas Graf's generic rules
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/rcupdate.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <net/neighbour.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <net/dst.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <net/flow.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <net/fib_rules.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <net/dn.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <net/dn_fib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <net/dn_neigh.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include <net/dn_dev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #include <net/dn_route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static struct fib_rules_ops *dn_fib_rules_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) struct dn_fib_rule
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	struct fib_rule		common;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	unsigned char		dst_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	unsigned char		src_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	__le16			src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	__le16			srcmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	__le16			dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	__le16			dstmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	__le16			srcmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	u8			flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) int dn_fib_lookup(struct flowidn *flp, struct dn_fib_res *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct fib_lookup_arg arg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		.result = res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	err = fib_rules_lookup(dn_fib_rules_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 			       flowidn_to_flowi(flp), 0, &arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	res->r = arg.rule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) static int dn_fib_rule_action(struct fib_rule *rule, struct flowi *flp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 			      int flags, struct fib_lookup_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	struct flowidn *fld = &flp->u.dn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	int err = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct dn_fib_table *tbl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	switch(rule->action) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	case FR_ACT_TO_TBL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	case FR_ACT_UNREACHABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		err = -ENETUNREACH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	case FR_ACT_PROHIBIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		err = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	case FR_ACT_BLACKHOLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	tbl = dn_fib_get_table(rule->table, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	if (tbl == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	err = tbl->lookup(tbl, fld, (struct dn_fib_res *)arg->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	if (err > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		err = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static const struct nla_policy dn_fib_rule_policy[FRA_MAX+1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	FRA_GENERIC_POLICY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static int dn_fib_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	struct dn_fib_rule *r = (struct dn_fib_rule *)rule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	struct flowidn *fld = &fl->u.dn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	__le16 daddr = fld->daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	__le16 saddr = fld->saddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	if (((saddr ^ r->src) & r->srcmask) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	    ((daddr ^ r->dst) & r->dstmask))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int dn_fib_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 				 struct fib_rule_hdr *frh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 				 struct nlattr **tb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 				 struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	int err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	struct dn_fib_rule *r = (struct dn_fib_rule *)rule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	if (frh->tos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 		NL_SET_ERR_MSG(extack, "Invalid tos value");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		goto  errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (rule->table == RT_TABLE_UNSPEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		if (rule->action == FR_ACT_TO_TBL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 			struct dn_fib_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			table = dn_fib_empty_table();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			if (table == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 				err = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 				goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 			rule->table = table->n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	if (frh->src_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		r->src = nla_get_le16(tb[FRA_SRC]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	if (frh->dst_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		r->dst = nla_get_le16(tb[FRA_DST]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	r->src_len = frh->src_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	r->srcmask = dnet_make_mask(r->src_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	r->dst_len = frh->dst_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	r->dstmask = dnet_make_mask(r->dst_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int dn_fib_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			       struct nlattr **tb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	struct dn_fib_rule *r = (struct dn_fib_rule *)rule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	if (frh->src_len && (r->src_len != frh->src_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	if (frh->dst_len && (r->dst_len != frh->dst_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	if (frh->src_len && (r->src != nla_get_le16(tb[FRA_SRC])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (frh->dst_len && (r->dst != nla_get_le16(tb[FRA_DST])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) unsigned int dnet_addr_type(__le16 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	struct flowidn fld = { .daddr = addr };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct dn_fib_res res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	unsigned int ret = RTN_UNICAST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct dn_fib_table *tb = dn_fib_get_table(RT_TABLE_LOCAL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	res.r = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	if (tb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		if (!tb->lookup(tb, &fld, &res)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			ret = res.type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 			dn_fib_res_put(&res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static int dn_fib_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			    struct fib_rule_hdr *frh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	struct dn_fib_rule *r = (struct dn_fib_rule *)rule;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	frh->dst_len = r->dst_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	frh->src_len = r->src_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	frh->tos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	if ((r->dst_len &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	     nla_put_le16(skb, FRA_DST, r->dst)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	    (r->src_len &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	     nla_put_le16(skb, FRA_SRC, r->src)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	return -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static void dn_fib_rule_flush_cache(struct fib_rules_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	dn_rt_cache_flush(-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static const struct fib_rules_ops __net_initconst dn_fib_rules_ops_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	.family		= AF_DECnet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	.rule_size	= sizeof(struct dn_fib_rule),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	.addr_size	= sizeof(u16),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	.action		= dn_fib_rule_action,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	.match		= dn_fib_rule_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	.configure	= dn_fib_rule_configure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	.compare	= dn_fib_rule_compare,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	.fill		= dn_fib_rule_fill,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	.flush_cache	= dn_fib_rule_flush_cache,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	.nlgroup	= RTNLGRP_DECnet_RULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	.policy		= dn_fib_rule_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	.owner		= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	.fro_net	= &init_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) void __init dn_fib_rules_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	dn_fib_rules_ops =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		fib_rules_register(&dn_fib_rules_ops_template, &init_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	BUG_ON(IS_ERR(dn_fib_rules_ops));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	BUG_ON(fib_default_rule_add(dn_fib_rules_ops, 0x7fff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 			            RT_TABLE_MAIN, 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) void __exit dn_fib_rules_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	fib_rules_unregister(dn_fib_rules_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }