Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *	Bridge per vlan tunnel port dst_metadata netlink control interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *	Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *	Roopa Prabhu		<roopa@cumulusnetworks.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <net/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <net/net_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <uapi/linux/if_bridge.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <net/dst_metadata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "br_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include "br_private_tunnel.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) static size_t __get_vlan_tinfo_size(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	return nla_total_size(0) + /* nest IFLA_BRIDGE_VLAN_TUNNEL_INFO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 		  nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_VLAN_TUNNEL_ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 		  nla_total_size(sizeof(u16)) + /* IFLA_BRIDGE_VLAN_TUNNEL_VID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 		  nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_VLAN_TUNNEL_FLAGS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) bool vlan_tunid_inrange(const struct net_bridge_vlan *v_curr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 			const struct net_bridge_vlan *v_last)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	__be32 tunid_curr = tunnel_id_to_key32(v_curr->tinfo.tunnel_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	__be32 tunid_last = tunnel_id_to_key32(v_last->tinfo.tunnel_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	return (be32_to_cpu(tunid_curr) - be32_to_cpu(tunid_last)) == 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static int __get_num_vlan_tunnel_infos(struct net_bridge_vlan_group *vg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct net_bridge_vlan *v, *vtbegin = NULL, *vtend = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	int num_tinfos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	/* Count number of vlan infos */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		/* only a context, bridge vlan not activated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		if (!br_vlan_should_use(v) || !v->tinfo.tunnel_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		if (!vtbegin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 			goto initvars;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		} else if ((v->vid - vtend->vid) == 1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 			   vlan_tunid_inrange(v, vtend)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 			vtend = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 			if ((vtend->vid - vtbegin->vid) > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 				num_tinfos += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 			else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 				num_tinfos += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) initvars:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		vtbegin = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		vtend = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	if (vtbegin && vtend) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		if ((vtend->vid - vtbegin->vid) > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			num_tinfos += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			num_tinfos += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	return num_tinfos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) int br_get_vlan_tunnel_info_size(struct net_bridge_vlan_group *vg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	int num_tinfos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (!vg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	num_tinfos = __get_num_vlan_tunnel_infos(vg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	return num_tinfos * __get_vlan_tinfo_size();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static int br_fill_vlan_tinfo(struct sk_buff *skb, u16 vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			      __be64 tunnel_id, u16 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	__be32 tid = tunnel_id_to_key32(tunnel_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	struct nlattr *tmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	tmap = nla_nest_start_noflag(skb, IFLA_BRIDGE_VLAN_TUNNEL_INFO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	if (!tmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (nla_put_u32(skb, IFLA_BRIDGE_VLAN_TUNNEL_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			be32_to_cpu(tid)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (nla_put_u16(skb, IFLA_BRIDGE_VLAN_TUNNEL_VID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			vid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	if (nla_put_u16(skb, IFLA_BRIDGE_VLAN_TUNNEL_FLAGS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 			flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	nla_nest_end(skb, tmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	nla_nest_cancel(skb, tmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static int br_fill_vlan_tinfo_range(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 				    struct net_bridge_vlan *vtbegin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 				    struct net_bridge_vlan *vtend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (vtend && (vtend->vid - vtbegin->vid) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		/* add range to skb */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		err = br_fill_vlan_tinfo(skb, vtbegin->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 					 vtbegin->tinfo.tunnel_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 					 BRIDGE_VLAN_INFO_RANGE_BEGIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		err = br_fill_vlan_tinfo(skb, vtend->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 					 vtend->tinfo.tunnel_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 					 BRIDGE_VLAN_INFO_RANGE_END);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		err = br_fill_vlan_tinfo(skb, vtbegin->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 					 vtbegin->tinfo.tunnel_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 					 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 			return err;
^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) 	return 0;
^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) int br_fill_vlan_tunnel_info(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			     struct net_bridge_vlan_group *vg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	struct net_bridge_vlan *vtbegin = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct net_bridge_vlan *vtend = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	struct net_bridge_vlan *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	/* Count number of vlan infos */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		/* only a context, bridge vlan not activated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		if (!br_vlan_should_use(v))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		if (!v->tinfo.tunnel_dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		if (!vtbegin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			goto initvars;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		} else if ((v->vid - vtend->vid) == 1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 			    vlan_tunid_inrange(v, vtend)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 			vtend = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 			err = br_fill_vlan_tinfo_range(skb, vtbegin, vtend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 			if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 				return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) initvars:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		vtbegin = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		vtend = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	if (vtbegin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		err = br_fill_vlan_tinfo_range(skb, vtbegin, vtend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static const struct nla_policy vlan_tunnel_policy[IFLA_BRIDGE_VLAN_TUNNEL_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	[IFLA_BRIDGE_VLAN_TUNNEL_ID] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	[IFLA_BRIDGE_VLAN_TUNNEL_VID] = { .type = NLA_U16 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	[IFLA_BRIDGE_VLAN_TUNNEL_FLAGS] = { .type = NLA_U16 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int br_vlan_tunnel_info(const struct net_bridge_port *p, int cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			u16 vid, u32 tun_id, bool *changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	case RTM_SETLINK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		err = nbp_vlan_tunnel_info_add(p, vid, tun_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 			*changed = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	case RTM_DELLINK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		if (!nbp_vlan_tunnel_info_delete(p, vid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 			*changed = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) int br_parse_vlan_tunnel_info(struct nlattr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			      struct vtunnel_info *tinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	struct nlattr *tb[IFLA_BRIDGE_VLAN_TUNNEL_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	u32 tun_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	u16 vid, flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	memset(tinfo, 0, sizeof(*tinfo));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	err = nla_parse_nested_deprecated(tb, IFLA_BRIDGE_VLAN_TUNNEL_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 					  attr, vlan_tunnel_policy, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	if (!tb[IFLA_BRIDGE_VLAN_TUNNEL_ID] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	    !tb[IFLA_BRIDGE_VLAN_TUNNEL_VID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	tun_id = nla_get_u32(tb[IFLA_BRIDGE_VLAN_TUNNEL_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	vid = nla_get_u16(tb[IFLA_BRIDGE_VLAN_TUNNEL_VID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	if (vid >= VLAN_VID_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	if (tb[IFLA_BRIDGE_VLAN_TUNNEL_FLAGS])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		flags = nla_get_u16(tb[IFLA_BRIDGE_VLAN_TUNNEL_FLAGS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	tinfo->tunid = tun_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	tinfo->vid = vid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	tinfo->flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) /* send a notification if v_curr can't enter the range and start a new one */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static void __vlan_tunnel_handle_range(const struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 				       struct net_bridge_vlan **v_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 				       struct net_bridge_vlan **v_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 				       int v_curr, bool curr_change)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	struct net_bridge_vlan_group *vg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	struct net_bridge_vlan *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	vg = nbp_vlan_group(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	if (!vg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	v = br_vlan_find(vg, v_curr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if (!*v_start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		goto out_init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	if (v && curr_change && br_vlan_can_enter_range(v, *v_end)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		*v_end = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	br_vlan_notify(p->br, p, (*v_start)->vid, (*v_end)->vid, RTM_NEWVLAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) out_init:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	/* we start a range only if there are any changes to notify about */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	*v_start = curr_change ? v : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	*v_end = *v_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) int br_process_vlan_tunnel_info(const struct net_bridge *br,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 				const struct net_bridge_port *p, int cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 				struct vtunnel_info *tinfo_curr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 				struct vtunnel_info *tinfo_last,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 				bool *changed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	if (tinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 		if (tinfo_last->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		memcpy(tinfo_last, tinfo_curr, sizeof(struct vtunnel_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	} else if (tinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 		struct net_bridge_vlan *v_start = NULL, *v_end = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		int t, v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		if (!(tinfo_last->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		if ((tinfo_curr->vid - tinfo_last->vid) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		    (tinfo_curr->tunid - tinfo_last->tunid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		t = tinfo_last->tunid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		for (v = tinfo_last->vid; v <= tinfo_curr->vid; v++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 			bool curr_change = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 			err = br_vlan_tunnel_info(p, cmd, v, t, &curr_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 			if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 			t++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 			if (curr_change)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 				*changed = curr_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 			 __vlan_tunnel_handle_range(p, &v_start, &v_end, v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 						    curr_change);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		if (v_start && v_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 			br_vlan_notify(br, p, v_start->vid, v_end->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 				       RTM_NEWVLAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 		memset(tinfo_last, 0, sizeof(struct vtunnel_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		memset(tinfo_curr, 0, sizeof(struct vtunnel_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		if (tinfo_last->flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		err = br_vlan_tunnel_info(p, cmd, tinfo_curr->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 					  tinfo_curr->tunid, changed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		br_vlan_notify(br, p, tinfo_curr->vid, 0, RTM_NEWVLAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		memset(tinfo_last, 0, sizeof(struct vtunnel_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		memset(tinfo_curr, 0, sizeof(struct vtunnel_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }