mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 08:44:14 +08:00
68e331c785
This patch adds support to set/del bridge port attributes in hardware from the bridge driver. With this, when the user sends a bridge setlink message with no flags or master flags set, - the bridge driver ndo_bridge_setlink handler sets settings in the kernel - calls the swicthdev api to propagate the attrs to the switchdev hardware You can still use the self flag to go to the switch hw or switch port driver directly. With this, it also makes sure a notification goes out only after the attributes are set both in the kernel and hw. The patch calls switchdev api only if BRIDGE_FLAGS_SELF is not set. This is because the offload cases with BRIDGE_FLAGS_SELF are handled in the caller (in rtnetlink.c). Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
774 lines
19 KiB
C
774 lines
19 KiB
C
/*
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* Bridge netlink control interface
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*
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* Authors:
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* Stephen Hemminger <shemminger@osdl.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/etherdevice.h>
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#include <net/rtnetlink.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <net/switchdev.h>
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#include <uapi/linux/if_bridge.h>
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#include "br_private.h"
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#include "br_private_stp.h"
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static inline size_t br_port_info_size(void)
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{
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return nla_total_size(1) /* IFLA_BRPORT_STATE */
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+ nla_total_size(2) /* IFLA_BRPORT_PRIORITY */
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+ nla_total_size(4) /* IFLA_BRPORT_COST */
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+ nla_total_size(1) /* IFLA_BRPORT_MODE */
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+ nla_total_size(1) /* IFLA_BRPORT_GUARD */
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+ nla_total_size(1) /* IFLA_BRPORT_PROTECT */
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+ nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */
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+ nla_total_size(1) /* IFLA_BRPORT_LEARNING */
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+ nla_total_size(1) /* IFLA_BRPORT_UNICAST_FLOOD */
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+ 0;
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}
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static inline size_t br_nlmsg_size(void)
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{
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return NLMSG_ALIGN(sizeof(struct ifinfomsg))
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+ nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
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+ nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
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+ nla_total_size(4) /* IFLA_MASTER */
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+ nla_total_size(4) /* IFLA_MTU */
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+ nla_total_size(4) /* IFLA_LINK */
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+ nla_total_size(1) /* IFLA_OPERSTATE */
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+ nla_total_size(br_port_info_size()); /* IFLA_PROTINFO */
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}
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static int br_port_fill_attrs(struct sk_buff *skb,
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const struct net_bridge_port *p)
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{
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u8 mode = !!(p->flags & BR_HAIRPIN_MODE);
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if (nla_put_u8(skb, IFLA_BRPORT_STATE, p->state) ||
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nla_put_u16(skb, IFLA_BRPORT_PRIORITY, p->priority) ||
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nla_put_u32(skb, IFLA_BRPORT_COST, p->path_cost) ||
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nla_put_u8(skb, IFLA_BRPORT_MODE, mode) ||
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nla_put_u8(skb, IFLA_BRPORT_GUARD, !!(p->flags & BR_BPDU_GUARD)) ||
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nla_put_u8(skb, IFLA_BRPORT_PROTECT, !!(p->flags & BR_ROOT_BLOCK)) ||
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nla_put_u8(skb, IFLA_BRPORT_FAST_LEAVE, !!(p->flags & BR_MULTICAST_FAST_LEAVE)) ||
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nla_put_u8(skb, IFLA_BRPORT_LEARNING, !!(p->flags & BR_LEARNING)) ||
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nla_put_u8(skb, IFLA_BRPORT_UNICAST_FLOOD, !!(p->flags & BR_FLOOD)) ||
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nla_put_u8(skb, IFLA_BRPORT_PROXYARP, !!(p->flags & BR_PROXYARP)))
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return -EMSGSIZE;
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return 0;
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}
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static int br_fill_ifvlaninfo_range(struct sk_buff *skb, u16 vid_start,
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u16 vid_end, u16 flags)
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{
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struct bridge_vlan_info vinfo;
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if ((vid_end - vid_start) > 0) {
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/* add range to skb */
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vinfo.vid = vid_start;
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vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_BEGIN;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;
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vinfo.vid = vid_end;
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vinfo.flags = flags | BRIDGE_VLAN_INFO_RANGE_END;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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} else {
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vinfo.vid = vid_start;
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vinfo.flags = flags;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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}
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return 0;
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nla_put_failure:
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return -EMSGSIZE;
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}
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static int br_fill_ifvlaninfo_compressed(struct sk_buff *skb,
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const struct net_port_vlans *pv)
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{
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u16 vid_range_start = 0, vid_range_end = 0;
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u16 vid_range_flags = 0;
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u16 pvid, vid, flags;
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int err = 0;
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/* Pack IFLA_BRIDGE_VLAN_INFO's for every vlan
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* and mark vlan info with begin and end flags
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* if vlaninfo represents a range
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*/
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pvid = br_get_pvid(pv);
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for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
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flags = 0;
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if (vid == pvid)
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flags |= BRIDGE_VLAN_INFO_PVID;
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if (test_bit(vid, pv->untagged_bitmap))
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flags |= BRIDGE_VLAN_INFO_UNTAGGED;
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if (vid_range_start == 0) {
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goto initvars;
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} else if ((vid - vid_range_end) == 1 &&
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flags == vid_range_flags) {
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vid_range_end = vid;
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continue;
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} else {
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err = br_fill_ifvlaninfo_range(skb, vid_range_start,
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vid_range_end,
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vid_range_flags);
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if (err)
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return err;
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}
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initvars:
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vid_range_start = vid;
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vid_range_end = vid;
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vid_range_flags = flags;
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}
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if (vid_range_start != 0) {
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/* Call it once more to send any left over vlans */
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err = br_fill_ifvlaninfo_range(skb, vid_range_start,
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vid_range_end,
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vid_range_flags);
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if (err)
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return err;
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}
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return 0;
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}
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static int br_fill_ifvlaninfo(struct sk_buff *skb,
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const struct net_port_vlans *pv)
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{
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struct bridge_vlan_info vinfo;
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u16 pvid, vid;
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pvid = br_get_pvid(pv);
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for_each_set_bit(vid, pv->vlan_bitmap, VLAN_N_VID) {
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vinfo.vid = vid;
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vinfo.flags = 0;
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if (vid == pvid)
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vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
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if (test_bit(vid, pv->untagged_bitmap))
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vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
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if (nla_put(skb, IFLA_BRIDGE_VLAN_INFO,
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sizeof(vinfo), &vinfo))
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goto nla_put_failure;
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}
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return 0;
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nla_put_failure:
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return -EMSGSIZE;
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}
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/*
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* Create one netlink message for one interface
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* Contains port and master info as well as carrier and bridge state.
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*/
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static int br_fill_ifinfo(struct sk_buff *skb,
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const struct net_bridge_port *port,
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u32 pid, u32 seq, int event, unsigned int flags,
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u32 filter_mask, const struct net_device *dev)
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{
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const struct net_bridge *br;
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struct ifinfomsg *hdr;
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struct nlmsghdr *nlh;
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u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
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if (port)
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br = port->br;
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else
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br = netdev_priv(dev);
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br_debug(br, "br_fill_info event %d port %s master %s\n",
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event, dev->name, br->dev->name);
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nlh = nlmsg_put(skb, pid, seq, event, sizeof(*hdr), flags);
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if (nlh == NULL)
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return -EMSGSIZE;
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hdr = nlmsg_data(nlh);
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hdr->ifi_family = AF_BRIDGE;
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hdr->__ifi_pad = 0;
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hdr->ifi_type = dev->type;
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hdr->ifi_index = dev->ifindex;
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hdr->ifi_flags = dev_get_flags(dev);
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hdr->ifi_change = 0;
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if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
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nla_put_u32(skb, IFLA_MASTER, br->dev->ifindex) ||
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nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
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nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
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(dev->addr_len &&
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nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
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(dev->ifindex != dev->iflink &&
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nla_put_u32(skb, IFLA_LINK, dev->iflink)))
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goto nla_put_failure;
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if (event == RTM_NEWLINK && port) {
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struct nlattr *nest
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= nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
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if (nest == NULL || br_port_fill_attrs(skb, port) < 0)
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goto nla_put_failure;
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nla_nest_end(skb, nest);
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}
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/* Check if the VID information is requested */
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if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
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(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
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const struct net_port_vlans *pv;
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struct nlattr *af;
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int err;
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if (port)
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pv = nbp_get_vlan_info(port);
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else
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pv = br_get_vlan_info(br);
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if (!pv || bitmap_empty(pv->vlan_bitmap, VLAN_N_VID))
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goto done;
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af = nla_nest_start(skb, IFLA_AF_SPEC);
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if (!af)
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goto nla_put_failure;
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if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
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err = br_fill_ifvlaninfo_compressed(skb, pv);
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else
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err = br_fill_ifvlaninfo(skb, pv);
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if (err)
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goto nla_put_failure;
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nla_nest_end(skb, af);
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}
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done:
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nlmsg_end(skb, nlh);
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return 0;
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nla_put_failure:
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nlmsg_cancel(skb, nlh);
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return -EMSGSIZE;
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}
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/*
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* Notify listeners of a change in port information
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*/
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void br_ifinfo_notify(int event, struct net_bridge_port *port)
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{
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struct net *net;
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struct sk_buff *skb;
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int err = -ENOBUFS;
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if (!port)
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return;
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net = dev_net(port->dev);
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br_debug(port->br, "port %u(%s) event %d\n",
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(unsigned int)port->port_no, port->dev->name, event);
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skb = nlmsg_new(br_nlmsg_size(), GFP_ATOMIC);
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if (skb == NULL)
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goto errout;
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err = br_fill_ifinfo(skb, port, 0, 0, event, 0, 0, port->dev);
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if (err < 0) {
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/* -EMSGSIZE implies BUG in br_nlmsg_size() */
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WARN_ON(err == -EMSGSIZE);
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kfree_skb(skb);
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goto errout;
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}
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rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
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return;
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errout:
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rtnl_set_sk_err(net, RTNLGRP_LINK, err);
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}
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/*
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* Dump information about all ports, in response to GETLINK
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*/
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int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
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struct net_device *dev, u32 filter_mask)
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{
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struct net_bridge_port *port = br_port_get_rtnl(dev);
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if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
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!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED))
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return 0;
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return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, NLM_F_MULTI,
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filter_mask, dev);
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}
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static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
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int cmd, struct bridge_vlan_info *vinfo)
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{
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int err = 0;
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switch (cmd) {
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case RTM_SETLINK:
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if (p) {
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err = nbp_vlan_add(p, vinfo->vid, vinfo->flags);
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if (err)
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break;
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if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
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err = br_vlan_add(p->br, vinfo->vid,
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vinfo->flags);
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} else {
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err = br_vlan_add(br, vinfo->vid, vinfo->flags);
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}
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break;
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case RTM_DELLINK:
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if (p) {
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nbp_vlan_delete(p, vinfo->vid);
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if (vinfo->flags & BRIDGE_VLAN_INFO_MASTER)
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br_vlan_delete(p->br, vinfo->vid);
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} else {
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br_vlan_delete(br, vinfo->vid);
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}
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break;
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}
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return err;
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}
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static int br_afspec(struct net_bridge *br,
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struct net_bridge_port *p,
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struct nlattr *af_spec,
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int cmd)
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{
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struct bridge_vlan_info *vinfo_start = NULL;
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struct bridge_vlan_info *vinfo = NULL;
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struct nlattr *attr;
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int err = 0;
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int rem;
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nla_for_each_nested(attr, af_spec, rem) {
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if (nla_type(attr) != IFLA_BRIDGE_VLAN_INFO)
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continue;
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if (nla_len(attr) != sizeof(struct bridge_vlan_info))
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return -EINVAL;
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vinfo = nla_data(attr);
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if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
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if (vinfo_start)
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return -EINVAL;
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vinfo_start = vinfo;
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continue;
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}
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if (vinfo_start) {
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struct bridge_vlan_info tmp_vinfo;
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int v;
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if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
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return -EINVAL;
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if (vinfo->vid <= vinfo_start->vid)
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return -EINVAL;
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memcpy(&tmp_vinfo, vinfo_start,
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sizeof(struct bridge_vlan_info));
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for (v = vinfo_start->vid; v <= vinfo->vid; v++) {
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tmp_vinfo.vid = v;
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err = br_vlan_info(br, p, cmd, &tmp_vinfo);
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if (err)
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break;
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}
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vinfo_start = NULL;
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} else {
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err = br_vlan_info(br, p, cmd, vinfo);
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}
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if (err)
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break;
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}
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return err;
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}
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static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
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[IFLA_BRPORT_STATE] = { .type = NLA_U8 },
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[IFLA_BRPORT_COST] = { .type = NLA_U32 },
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[IFLA_BRPORT_PRIORITY] = { .type = NLA_U16 },
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[IFLA_BRPORT_MODE] = { .type = NLA_U8 },
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[IFLA_BRPORT_GUARD] = { .type = NLA_U8 },
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[IFLA_BRPORT_PROTECT] = { .type = NLA_U8 },
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[IFLA_BRPORT_FAST_LEAVE]= { .type = NLA_U8 },
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[IFLA_BRPORT_LEARNING] = { .type = NLA_U8 },
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[IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
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};
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/* Change the state of the port and notify spanning tree */
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static int br_set_port_state(struct net_bridge_port *p, u8 state)
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{
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if (state > BR_STATE_BLOCKING)
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return -EINVAL;
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/* if kernel STP is running, don't allow changes */
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if (p->br->stp_enabled == BR_KERNEL_STP)
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return -EBUSY;
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/* if device is not up, change is not allowed
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* if link is not present, only allowable state is disabled
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*/
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if (!netif_running(p->dev) ||
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(!netif_oper_up(p->dev) && state != BR_STATE_DISABLED))
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return -ENETDOWN;
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br_set_state(p, state);
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br_log_state(p);
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br_port_state_selection(p->br);
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return 0;
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}
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/* Set/clear or port flags based on attribute */
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static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[],
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int attrtype, unsigned long mask)
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{
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if (tb[attrtype]) {
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u8 flag = nla_get_u8(tb[attrtype]);
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if (flag)
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p->flags |= mask;
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else
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p->flags &= ~mask;
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}
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}
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/* Process bridge protocol info on port */
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static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
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{
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int err;
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unsigned long old_flags = p->flags;
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br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD);
|
|
br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP);
|
|
|
|
if (tb[IFLA_BRPORT_COST]) {
|
|
err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (tb[IFLA_BRPORT_PRIORITY]) {
|
|
err = br_stp_set_port_priority(p, nla_get_u16(tb[IFLA_BRPORT_PRIORITY]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (tb[IFLA_BRPORT_STATE]) {
|
|
err = br_set_port_state(p, nla_get_u8(tb[IFLA_BRPORT_STATE]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
br_port_flags_change(p, old_flags ^ p->flags);
|
|
return 0;
|
|
}
|
|
|
|
/* Change state and parameters on port. */
|
|
int br_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct nlattr *protinfo;
|
|
struct nlattr *afspec;
|
|
struct net_bridge_port *p;
|
|
struct nlattr *tb[IFLA_BRPORT_MAX + 1];
|
|
int err = 0, ret_offload = 0;
|
|
|
|
protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_PROTINFO);
|
|
afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
|
|
if (!protinfo && !afspec)
|
|
return 0;
|
|
|
|
p = br_port_get_rtnl(dev);
|
|
/* We want to accept dev as bridge itself if the AF_SPEC
|
|
* is set to see if someone is setting vlan info on the bridge
|
|
*/
|
|
if (!p && !afspec)
|
|
return -EINVAL;
|
|
|
|
if (p && protinfo) {
|
|
if (protinfo->nla_type & NLA_F_NESTED) {
|
|
err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
|
|
protinfo, br_port_policy);
|
|
if (err)
|
|
return err;
|
|
|
|
spin_lock_bh(&p->br->lock);
|
|
err = br_setport(p, tb);
|
|
spin_unlock_bh(&p->br->lock);
|
|
} else {
|
|
/* Binary compatibility with old RSTP */
|
|
if (nla_len(protinfo) < sizeof(u8))
|
|
return -EINVAL;
|
|
|
|
spin_lock_bh(&p->br->lock);
|
|
err = br_set_port_state(p, nla_get_u8(protinfo));
|
|
spin_unlock_bh(&p->br->lock);
|
|
}
|
|
if (err)
|
|
goto out;
|
|
}
|
|
|
|
if (afspec) {
|
|
err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
|
|
afspec, RTM_SETLINK);
|
|
}
|
|
|
|
if (!(flags & BRIDGE_FLAGS_SELF)) {
|
|
/* set bridge attributes in hardware if supported
|
|
*/
|
|
ret_offload = netdev_switch_port_bridge_setlink(dev, nlh,
|
|
flags);
|
|
if (ret_offload && ret_offload != -EOPNOTSUPP)
|
|
br_warn(p->br, "error setting attrs on port %u(%s)\n",
|
|
(unsigned int)p->port_no, p->dev->name);
|
|
}
|
|
|
|
if (err == 0)
|
|
br_ifinfo_notify(RTM_NEWLINK, p);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
/* Delete port information */
|
|
int br_dellink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags)
|
|
{
|
|
struct nlattr *afspec;
|
|
struct net_bridge_port *p;
|
|
int err = 0, ret_offload = 0;
|
|
|
|
afspec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
|
|
if (!afspec)
|
|
return 0;
|
|
|
|
p = br_port_get_rtnl(dev);
|
|
/* We want to accept dev as bridge itself as well */
|
|
if (!p && !(dev->priv_flags & IFF_EBRIDGE))
|
|
return -EINVAL;
|
|
|
|
err = br_afspec((struct net_bridge *)netdev_priv(dev), p,
|
|
afspec, RTM_DELLINK);
|
|
if (err == 0)
|
|
/* Send RTM_NEWLINK because userspace
|
|
* expects RTM_NEWLINK for vlan dels
|
|
*/
|
|
br_ifinfo_notify(RTM_NEWLINK, p);
|
|
|
|
if (!(flags & BRIDGE_FLAGS_SELF)) {
|
|
/* del bridge attributes in hardware
|
|
*/
|
|
ret_offload = netdev_switch_port_bridge_dellink(dev, nlh,
|
|
flags);
|
|
if (ret_offload && ret_offload != -EOPNOTSUPP)
|
|
br_warn(p->br, "error deleting attrs on port %u (%s)\n",
|
|
(unsigned int)p->port_no, p->dev->name);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
static int br_validate(struct nlattr *tb[], struct nlattr *data[])
|
|
{
|
|
if (tb[IFLA_ADDRESS]) {
|
|
if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
|
|
return -EINVAL;
|
|
if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
|
|
return -EADDRNOTAVAIL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int br_dev_newlink(struct net *src_net, struct net_device *dev,
|
|
struct nlattr *tb[], struct nlattr *data[])
|
|
{
|
|
struct net_bridge *br = netdev_priv(dev);
|
|
|
|
if (tb[IFLA_ADDRESS]) {
|
|
spin_lock_bh(&br->lock);
|
|
br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS]));
|
|
spin_unlock_bh(&br->lock);
|
|
}
|
|
|
|
return register_netdevice(dev);
|
|
}
|
|
|
|
static int br_port_slave_changelink(struct net_device *brdev,
|
|
struct net_device *dev,
|
|
struct nlattr *tb[],
|
|
struct nlattr *data[])
|
|
{
|
|
if (!data)
|
|
return 0;
|
|
return br_setport(br_port_get_rtnl(dev), data);
|
|
}
|
|
|
|
static int br_port_fill_slave_info(struct sk_buff *skb,
|
|
const struct net_device *brdev,
|
|
const struct net_device *dev)
|
|
{
|
|
return br_port_fill_attrs(skb, br_port_get_rtnl(dev));
|
|
}
|
|
|
|
static size_t br_port_get_slave_size(const struct net_device *brdev,
|
|
const struct net_device *dev)
|
|
{
|
|
return br_port_info_size();
|
|
}
|
|
|
|
static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
|
|
[IFLA_BR_FORWARD_DELAY] = { .type = NLA_U32 },
|
|
[IFLA_BR_HELLO_TIME] = { .type = NLA_U32 },
|
|
[IFLA_BR_MAX_AGE] = { .type = NLA_U32 },
|
|
};
|
|
|
|
static int br_changelink(struct net_device *brdev, struct nlattr *tb[],
|
|
struct nlattr *data[])
|
|
{
|
|
struct net_bridge *br = netdev_priv(brdev);
|
|
int err;
|
|
|
|
if (!data)
|
|
return 0;
|
|
|
|
if (data[IFLA_BR_FORWARD_DELAY]) {
|
|
err = br_set_forward_delay(br, nla_get_u32(data[IFLA_BR_FORWARD_DELAY]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_HELLO_TIME]) {
|
|
err = br_set_hello_time(br, nla_get_u32(data[IFLA_BR_HELLO_TIME]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (data[IFLA_BR_MAX_AGE]) {
|
|
err = br_set_max_age(br, nla_get_u32(data[IFLA_BR_MAX_AGE]));
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static size_t br_get_size(const struct net_device *brdev)
|
|
{
|
|
return nla_total_size(sizeof(u32)) + /* IFLA_BR_FORWARD_DELAY */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_HELLO_TIME */
|
|
nla_total_size(sizeof(u32)) + /* IFLA_BR_MAX_AGE */
|
|
0;
|
|
}
|
|
|
|
static int br_fill_info(struct sk_buff *skb, const struct net_device *brdev)
|
|
{
|
|
struct net_bridge *br = netdev_priv(brdev);
|
|
u32 forward_delay = jiffies_to_clock_t(br->forward_delay);
|
|
u32 hello_time = jiffies_to_clock_t(br->hello_time);
|
|
u32 age_time = jiffies_to_clock_t(br->max_age);
|
|
|
|
if (nla_put_u32(skb, IFLA_BR_FORWARD_DELAY, forward_delay) ||
|
|
nla_put_u32(skb, IFLA_BR_HELLO_TIME, hello_time) ||
|
|
nla_put_u32(skb, IFLA_BR_MAX_AGE, age_time))
|
|
return -EMSGSIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static size_t br_get_link_af_size(const struct net_device *dev)
|
|
{
|
|
struct net_port_vlans *pv;
|
|
|
|
if (br_port_exists(dev))
|
|
pv = nbp_get_vlan_info(br_port_get_rtnl(dev));
|
|
else if (dev->priv_flags & IFF_EBRIDGE)
|
|
pv = br_get_vlan_info((struct net_bridge *)netdev_priv(dev));
|
|
else
|
|
return 0;
|
|
|
|
if (!pv)
|
|
return 0;
|
|
|
|
/* Each VLAN is returned in bridge_vlan_info along with flags */
|
|
return pv->num_vlans * nla_total_size(sizeof(struct bridge_vlan_info));
|
|
}
|
|
|
|
static struct rtnl_af_ops br_af_ops __read_mostly = {
|
|
.family = AF_BRIDGE,
|
|
.get_link_af_size = br_get_link_af_size,
|
|
};
|
|
|
|
struct rtnl_link_ops br_link_ops __read_mostly = {
|
|
.kind = "bridge",
|
|
.priv_size = sizeof(struct net_bridge),
|
|
.setup = br_dev_setup,
|
|
.maxtype = IFLA_BRPORT_MAX,
|
|
.policy = br_policy,
|
|
.validate = br_validate,
|
|
.newlink = br_dev_newlink,
|
|
.changelink = br_changelink,
|
|
.dellink = br_dev_delete,
|
|
.get_size = br_get_size,
|
|
.fill_info = br_fill_info,
|
|
|
|
.slave_maxtype = IFLA_BRPORT_MAX,
|
|
.slave_policy = br_port_policy,
|
|
.slave_changelink = br_port_slave_changelink,
|
|
.get_slave_size = br_port_get_slave_size,
|
|
.fill_slave_info = br_port_fill_slave_info,
|
|
};
|
|
|
|
int __init br_netlink_init(void)
|
|
{
|
|
int err;
|
|
|
|
br_mdb_init();
|
|
rtnl_af_register(&br_af_ops);
|
|
|
|
err = rtnl_link_register(&br_link_ops);
|
|
if (err)
|
|
goto out_af;
|
|
|
|
return 0;
|
|
|
|
out_af:
|
|
rtnl_af_unregister(&br_af_ops);
|
|
br_mdb_uninit();
|
|
return err;
|
|
}
|
|
|
|
void br_netlink_fini(void)
|
|
{
|
|
br_mdb_uninit();
|
|
rtnl_af_unregister(&br_af_ops);
|
|
rtnl_link_unregister(&br_link_ops);
|
|
}
|